2 * Copyright © 2006-2007 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Eric Anholt <eric@anholt.net>
27 #include <linux/cpufreq.h>
28 #include <linux/dmi.h>
29 #include <linux/module.h>
30 #include <linux/input.h>
31 #include <linux/i2c.h>
32 #include <linux/kernel.h>
33 #include <linux/slab.h>
34 #include <linux/vgaarb.h>
35 #include <drm/drm_edid.h>
37 #include "intel_drv.h"
40 #include "i915_trace.h"
41 #include "drm_dp_helper.h"
42 #include "drm_crtc_helper.h"
43 #include <linux/dma_remapping.h>
45 #define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
47 bool intel_pipe_has_type(struct drm_crtc *crtc, int type);
48 static void intel_update_watermarks(struct drm_device *dev);
49 static void intel_increase_pllclock(struct drm_crtc *crtc);
50 static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
73 #define INTEL_P2_NUM 2
74 typedef struct intel_limit intel_limit_t;
76 intel_range_t dot, vco, n, m, m1, m2, p, p1;
78 bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
79 int, int, intel_clock_t *);
83 #define IRONLAKE_FDI_FREQ 2700000 /* in kHz for mode->clock */
86 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
87 int target, int refclk, intel_clock_t *best_clock);
89 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
90 int target, int refclk, intel_clock_t *best_clock);
93 intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc,
94 int target, int refclk, intel_clock_t *best_clock);
96 intel_find_pll_ironlake_dp(const intel_limit_t *, struct drm_crtc *crtc,
97 int target, int refclk, intel_clock_t *best_clock);
99 static inline u32 /* units of 100MHz */
100 intel_fdi_link_freq(struct drm_device *dev)
103 struct drm_i915_private *dev_priv = dev->dev_private;
104 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
109 static const intel_limit_t intel_limits_i8xx_dvo = {
110 .dot = { .min = 25000, .max = 350000 },
111 .vco = { .min = 930000, .max = 1400000 },
112 .n = { .min = 3, .max = 16 },
113 .m = { .min = 96, .max = 140 },
114 .m1 = { .min = 18, .max = 26 },
115 .m2 = { .min = 6, .max = 16 },
116 .p = { .min = 4, .max = 128 },
117 .p1 = { .min = 2, .max = 33 },
118 .p2 = { .dot_limit = 165000,
119 .p2_slow = 4, .p2_fast = 2 },
120 .find_pll = intel_find_best_PLL,
123 static const intel_limit_t intel_limits_i8xx_lvds = {
124 .dot = { .min = 25000, .max = 350000 },
125 .vco = { .min = 930000, .max = 1400000 },
126 .n = { .min = 3, .max = 16 },
127 .m = { .min = 96, .max = 140 },
128 .m1 = { .min = 18, .max = 26 },
129 .m2 = { .min = 6, .max = 16 },
130 .p = { .min = 4, .max = 128 },
131 .p1 = { .min = 1, .max = 6 },
132 .p2 = { .dot_limit = 165000,
133 .p2_slow = 14, .p2_fast = 7 },
134 .find_pll = intel_find_best_PLL,
137 static const intel_limit_t intel_limits_i9xx_sdvo = {
138 .dot = { .min = 20000, .max = 400000 },
139 .vco = { .min = 1400000, .max = 2800000 },
140 .n = { .min = 1, .max = 6 },
141 .m = { .min = 70, .max = 120 },
142 .m1 = { .min = 8, .max = 18 },
143 .m2 = { .min = 3, .max = 7 },
144 .p = { .min = 5, .max = 80 },
145 .p1 = { .min = 1, .max = 8 },
146 .p2 = { .dot_limit = 200000,
147 .p2_slow = 10, .p2_fast = 5 },
148 .find_pll = intel_find_best_PLL,
151 static const intel_limit_t intel_limits_i9xx_lvds = {
152 .dot = { .min = 20000, .max = 400000 },
153 .vco = { .min = 1400000, .max = 2800000 },
154 .n = { .min = 1, .max = 6 },
155 .m = { .min = 70, .max = 120 },
156 .m1 = { .min = 10, .max = 22 },
157 .m2 = { .min = 5, .max = 9 },
158 .p = { .min = 7, .max = 98 },
159 .p1 = { .min = 1, .max = 8 },
160 .p2 = { .dot_limit = 112000,
161 .p2_slow = 14, .p2_fast = 7 },
162 .find_pll = intel_find_best_PLL,
166 static const intel_limit_t intel_limits_g4x_sdvo = {
167 .dot = { .min = 25000, .max = 270000 },
168 .vco = { .min = 1750000, .max = 3500000},
169 .n = { .min = 1, .max = 4 },
170 .m = { .min = 104, .max = 138 },
171 .m1 = { .min = 17, .max = 23 },
172 .m2 = { .min = 5, .max = 11 },
173 .p = { .min = 10, .max = 30 },
174 .p1 = { .min = 1, .max = 3},
175 .p2 = { .dot_limit = 270000,
179 .find_pll = intel_g4x_find_best_PLL,
182 static const intel_limit_t intel_limits_g4x_hdmi = {
183 .dot = { .min = 22000, .max = 400000 },
184 .vco = { .min = 1750000, .max = 3500000},
185 .n = { .min = 1, .max = 4 },
186 .m = { .min = 104, .max = 138 },
187 .m1 = { .min = 16, .max = 23 },
188 .m2 = { .min = 5, .max = 11 },
189 .p = { .min = 5, .max = 80 },
190 .p1 = { .min = 1, .max = 8},
191 .p2 = { .dot_limit = 165000,
192 .p2_slow = 10, .p2_fast = 5 },
193 .find_pll = intel_g4x_find_best_PLL,
196 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
197 .dot = { .min = 20000, .max = 115000 },
198 .vco = { .min = 1750000, .max = 3500000 },
199 .n = { .min = 1, .max = 3 },
200 .m = { .min = 104, .max = 138 },
201 .m1 = { .min = 17, .max = 23 },
202 .m2 = { .min = 5, .max = 11 },
203 .p = { .min = 28, .max = 112 },
204 .p1 = { .min = 2, .max = 8 },
205 .p2 = { .dot_limit = 0,
206 .p2_slow = 14, .p2_fast = 14
208 .find_pll = intel_g4x_find_best_PLL,
211 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
212 .dot = { .min = 80000, .max = 224000 },
213 .vco = { .min = 1750000, .max = 3500000 },
214 .n = { .min = 1, .max = 3 },
215 .m = { .min = 104, .max = 138 },
216 .m1 = { .min = 17, .max = 23 },
217 .m2 = { .min = 5, .max = 11 },
218 .p = { .min = 14, .max = 42 },
219 .p1 = { .min = 2, .max = 6 },
220 .p2 = { .dot_limit = 0,
221 .p2_slow = 7, .p2_fast = 7
223 .find_pll = intel_g4x_find_best_PLL,
226 static const intel_limit_t intel_limits_g4x_display_port = {
227 .dot = { .min = 161670, .max = 227000 },
228 .vco = { .min = 1750000, .max = 3500000},
229 .n = { .min = 1, .max = 2 },
230 .m = { .min = 97, .max = 108 },
231 .m1 = { .min = 0x10, .max = 0x12 },
232 .m2 = { .min = 0x05, .max = 0x06 },
233 .p = { .min = 10, .max = 20 },
234 .p1 = { .min = 1, .max = 2},
235 .p2 = { .dot_limit = 0,
236 .p2_slow = 10, .p2_fast = 10 },
237 .find_pll = intel_find_pll_g4x_dp,
240 static const intel_limit_t intel_limits_pineview_sdvo = {
241 .dot = { .min = 20000, .max = 400000},
242 .vco = { .min = 1700000, .max = 3500000 },
243 /* Pineview's Ncounter is a ring counter */
244 .n = { .min = 3, .max = 6 },
245 .m = { .min = 2, .max = 256 },
246 /* Pineview only has one combined m divider, which we treat as m2. */
247 .m1 = { .min = 0, .max = 0 },
248 .m2 = { .min = 0, .max = 254 },
249 .p = { .min = 5, .max = 80 },
250 .p1 = { .min = 1, .max = 8 },
251 .p2 = { .dot_limit = 200000,
252 .p2_slow = 10, .p2_fast = 5 },
253 .find_pll = intel_find_best_PLL,
256 static const intel_limit_t intel_limits_pineview_lvds = {
257 .dot = { .min = 20000, .max = 400000 },
258 .vco = { .min = 1700000, .max = 3500000 },
259 .n = { .min = 3, .max = 6 },
260 .m = { .min = 2, .max = 256 },
261 .m1 = { .min = 0, .max = 0 },
262 .m2 = { .min = 0, .max = 254 },
263 .p = { .min = 7, .max = 112 },
264 .p1 = { .min = 1, .max = 8 },
265 .p2 = { .dot_limit = 112000,
266 .p2_slow = 14, .p2_fast = 14 },
267 .find_pll = intel_find_best_PLL,
270 /* Ironlake / Sandybridge
272 * We calculate clock using (register_value + 2) for N/M1/M2, so here
273 * the range value for them is (actual_value - 2).
275 static const intel_limit_t intel_limits_ironlake_dac = {
276 .dot = { .min = 25000, .max = 350000 },
277 .vco = { .min = 1760000, .max = 3510000 },
278 .n = { .min = 1, .max = 5 },
279 .m = { .min = 79, .max = 127 },
280 .m1 = { .min = 12, .max = 22 },
281 .m2 = { .min = 5, .max = 9 },
282 .p = { .min = 5, .max = 80 },
283 .p1 = { .min = 1, .max = 8 },
284 .p2 = { .dot_limit = 225000,
285 .p2_slow = 10, .p2_fast = 5 },
286 .find_pll = intel_g4x_find_best_PLL,
289 static const intel_limit_t intel_limits_ironlake_single_lvds = {
290 .dot = { .min = 25000, .max = 350000 },
291 .vco = { .min = 1760000, .max = 3510000 },
292 .n = { .min = 1, .max = 3 },
293 .m = { .min = 79, .max = 118 },
294 .m1 = { .min = 12, .max = 22 },
295 .m2 = { .min = 5, .max = 9 },
296 .p = { .min = 28, .max = 112 },
297 .p1 = { .min = 2, .max = 8 },
298 .p2 = { .dot_limit = 225000,
299 .p2_slow = 14, .p2_fast = 14 },
300 .find_pll = intel_g4x_find_best_PLL,
303 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
304 .dot = { .min = 25000, .max = 350000 },
305 .vco = { .min = 1760000, .max = 3510000 },
306 .n = { .min = 1, .max = 3 },
307 .m = { .min = 79, .max = 127 },
308 .m1 = { .min = 12, .max = 22 },
309 .m2 = { .min = 5, .max = 9 },
310 .p = { .min = 14, .max = 56 },
311 .p1 = { .min = 2, .max = 8 },
312 .p2 = { .dot_limit = 225000,
313 .p2_slow = 7, .p2_fast = 7 },
314 .find_pll = intel_g4x_find_best_PLL,
317 /* LVDS 100mhz refclk limits. */
318 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
319 .dot = { .min = 25000, .max = 350000 },
320 .vco = { .min = 1760000, .max = 3510000 },
321 .n = { .min = 1, .max = 2 },
322 .m = { .min = 79, .max = 126 },
323 .m1 = { .min = 12, .max = 22 },
324 .m2 = { .min = 5, .max = 9 },
325 .p = { .min = 28, .max = 112 },
326 .p1 = { .min = 2, .max = 8 },
327 .p2 = { .dot_limit = 225000,
328 .p2_slow = 14, .p2_fast = 14 },
329 .find_pll = intel_g4x_find_best_PLL,
332 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
333 .dot = { .min = 25000, .max = 350000 },
334 .vco = { .min = 1760000, .max = 3510000 },
335 .n = { .min = 1, .max = 3 },
336 .m = { .min = 79, .max = 126 },
337 .m1 = { .min = 12, .max = 22 },
338 .m2 = { .min = 5, .max = 9 },
339 .p = { .min = 14, .max = 42 },
340 .p1 = { .min = 2, .max = 6 },
341 .p2 = { .dot_limit = 225000,
342 .p2_slow = 7, .p2_fast = 7 },
343 .find_pll = intel_g4x_find_best_PLL,
346 static const intel_limit_t intel_limits_ironlake_display_port = {
347 .dot = { .min = 25000, .max = 350000 },
348 .vco = { .min = 1760000, .max = 3510000},
349 .n = { .min = 1, .max = 2 },
350 .m = { .min = 81, .max = 90 },
351 .m1 = { .min = 12, .max = 22 },
352 .m2 = { .min = 5, .max = 9 },
353 .p = { .min = 10, .max = 20 },
354 .p1 = { .min = 1, .max = 2},
355 .p2 = { .dot_limit = 0,
356 .p2_slow = 10, .p2_fast = 10 },
357 .find_pll = intel_find_pll_ironlake_dp,
360 static bool is_dual_link_lvds(struct drm_i915_private *dev_priv,
365 if (dev_priv->lvds_val)
366 val = dev_priv->lvds_val;
368 /* BIOS should set the proper LVDS register value at boot, but
369 * in reality, it doesn't set the value when the lid is closed;
370 * we need to check "the value to be set" in VBT when LVDS
371 * register is uninitialized.
373 val = I915_READ(reg);
374 if (!(val & ~LVDS_DETECTED))
375 val = dev_priv->bios_lvds_val;
376 dev_priv->lvds_val = val;
378 return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP;
381 static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc,
384 struct drm_device *dev = crtc->dev;
385 struct drm_i915_private *dev_priv = dev->dev_private;
386 const intel_limit_t *limit;
388 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
389 if (is_dual_link_lvds(dev_priv, PCH_LVDS)) {
390 /* LVDS dual channel */
391 if (refclk == 100000)
392 limit = &intel_limits_ironlake_dual_lvds_100m;
394 limit = &intel_limits_ironlake_dual_lvds;
396 if (refclk == 100000)
397 limit = &intel_limits_ironlake_single_lvds_100m;
399 limit = &intel_limits_ironlake_single_lvds;
401 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
403 limit = &intel_limits_ironlake_display_port;
405 limit = &intel_limits_ironlake_dac;
410 static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
412 struct drm_device *dev = crtc->dev;
413 struct drm_i915_private *dev_priv = dev->dev_private;
414 const intel_limit_t *limit;
416 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
417 if (is_dual_link_lvds(dev_priv, LVDS))
418 /* LVDS with dual channel */
419 limit = &intel_limits_g4x_dual_channel_lvds;
421 /* LVDS with dual channel */
422 limit = &intel_limits_g4x_single_channel_lvds;
423 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
424 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
425 limit = &intel_limits_g4x_hdmi;
426 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
427 limit = &intel_limits_g4x_sdvo;
428 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
429 limit = &intel_limits_g4x_display_port;
430 } else /* The option is for other outputs */
431 limit = &intel_limits_i9xx_sdvo;
436 static const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk)
438 struct drm_device *dev = crtc->dev;
439 const intel_limit_t *limit;
441 if (HAS_PCH_SPLIT(dev))
442 limit = intel_ironlake_limit(crtc, refclk);
443 else if (IS_G4X(dev)) {
444 limit = intel_g4x_limit(crtc);
445 } else if (IS_PINEVIEW(dev)) {
446 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
447 limit = &intel_limits_pineview_lvds;
449 limit = &intel_limits_pineview_sdvo;
450 } else if (!IS_GEN2(dev)) {
451 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
452 limit = &intel_limits_i9xx_lvds;
454 limit = &intel_limits_i9xx_sdvo;
456 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
457 limit = &intel_limits_i8xx_lvds;
459 limit = &intel_limits_i8xx_dvo;
464 /* m1 is reserved as 0 in Pineview, n is a ring counter */
465 static void pineview_clock(int refclk, intel_clock_t *clock)
467 clock->m = clock->m2 + 2;
468 clock->p = clock->p1 * clock->p2;
469 clock->vco = refclk * clock->m / clock->n;
470 clock->dot = clock->vco / clock->p;
473 static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
475 if (IS_PINEVIEW(dev)) {
476 pineview_clock(refclk, clock);
479 clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
480 clock->p = clock->p1 * clock->p2;
481 clock->vco = refclk * clock->m / (clock->n + 2);
482 clock->dot = clock->vco / clock->p;
486 * Returns whether any output on the specified pipe is of the specified type
488 bool intel_pipe_has_type(struct drm_crtc *crtc, int type)
490 struct drm_device *dev = crtc->dev;
491 struct drm_mode_config *mode_config = &dev->mode_config;
492 struct intel_encoder *encoder;
494 list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
495 if (encoder->base.crtc == crtc && encoder->type == type)
501 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
503 * Returns whether the given set of divisors are valid for a given refclk with
504 * the given connectors.
507 static bool intel_PLL_is_valid(struct drm_device *dev,
508 const intel_limit_t *limit,
509 const intel_clock_t *clock)
511 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
512 INTELPllInvalid("p1 out of range\n");
513 if (clock->p < limit->p.min || limit->p.max < clock->p)
514 INTELPllInvalid("p out of range\n");
515 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
516 INTELPllInvalid("m2 out of range\n");
517 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
518 INTELPllInvalid("m1 out of range\n");
519 if (clock->m1 <= clock->m2 && !IS_PINEVIEW(dev))
520 INTELPllInvalid("m1 <= m2\n");
521 if (clock->m < limit->m.min || limit->m.max < clock->m)
522 INTELPllInvalid("m out of range\n");
523 if (clock->n < limit->n.min || limit->n.max < clock->n)
524 INTELPllInvalid("n out of range\n");
525 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
526 INTELPllInvalid("vco out of range\n");
527 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
528 * connector, etc., rather than just a single range.
530 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
531 INTELPllInvalid("dot out of range\n");
537 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
538 int target, int refclk, intel_clock_t *best_clock)
541 struct drm_device *dev = crtc->dev;
542 struct drm_i915_private *dev_priv = dev->dev_private;
546 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
547 (I915_READ(LVDS)) != 0) {
549 * For LVDS, if the panel is on, just rely on its current
550 * settings for dual-channel. We haven't figured out how to
551 * reliably set up different single/dual channel state, if we
554 if (is_dual_link_lvds(dev_priv, LVDS))
555 clock.p2 = limit->p2.p2_fast;
557 clock.p2 = limit->p2.p2_slow;
559 if (target < limit->p2.dot_limit)
560 clock.p2 = limit->p2.p2_slow;
562 clock.p2 = limit->p2.p2_fast;
565 memset(best_clock, 0, sizeof(*best_clock));
567 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
569 for (clock.m2 = limit->m2.min;
570 clock.m2 <= limit->m2.max; clock.m2++) {
571 /* m1 is always 0 in Pineview */
572 if (clock.m2 >= clock.m1 && !IS_PINEVIEW(dev))
574 for (clock.n = limit->n.min;
575 clock.n <= limit->n.max; clock.n++) {
576 for (clock.p1 = limit->p1.min;
577 clock.p1 <= limit->p1.max; clock.p1++) {
580 intel_clock(dev, refclk, &clock);
581 if (!intel_PLL_is_valid(dev, limit,
585 this_err = abs(clock.dot - target);
586 if (this_err < err) {
595 return (err != target);
599 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
600 int target, int refclk, intel_clock_t *best_clock)
602 struct drm_device *dev = crtc->dev;
603 struct drm_i915_private *dev_priv = dev->dev_private;
607 /* approximately equals target * 0.00585 */
608 int err_most = (target >> 8) + (target >> 9);
611 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
614 if (HAS_PCH_SPLIT(dev))
618 if ((I915_READ(lvds_reg) & LVDS_CLKB_POWER_MASK) ==
620 clock.p2 = limit->p2.p2_fast;
622 clock.p2 = limit->p2.p2_slow;
624 if (target < limit->p2.dot_limit)
625 clock.p2 = limit->p2.p2_slow;
627 clock.p2 = limit->p2.p2_fast;
630 memset(best_clock, 0, sizeof(*best_clock));
631 max_n = limit->n.max;
632 /* based on hardware requirement, prefer smaller n to precision */
633 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
634 /* based on hardware requirement, prefere larger m1,m2 */
635 for (clock.m1 = limit->m1.max;
636 clock.m1 >= limit->m1.min; clock.m1--) {
637 for (clock.m2 = limit->m2.max;
638 clock.m2 >= limit->m2.min; clock.m2--) {
639 for (clock.p1 = limit->p1.max;
640 clock.p1 >= limit->p1.min; clock.p1--) {
643 intel_clock(dev, refclk, &clock);
644 if (!intel_PLL_is_valid(dev, limit,
648 this_err = abs(clock.dot - target);
649 if (this_err < err_most) {
663 intel_find_pll_ironlake_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
664 int target, int refclk, intel_clock_t *best_clock)
666 struct drm_device *dev = crtc->dev;
669 if (target < 200000) {
682 intel_clock(dev, refclk, &clock);
683 memcpy(best_clock, &clock, sizeof(intel_clock_t));
687 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
689 intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
690 int target, int refclk, intel_clock_t *best_clock)
693 if (target < 200000) {
706 clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
707 clock.p = (clock.p1 * clock.p2);
708 clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
710 memcpy(best_clock, &clock, sizeof(intel_clock_t));
715 * intel_wait_for_vblank - wait for vblank on a given pipe
717 * @pipe: pipe to wait for
719 * Wait for vblank to occur on a given pipe. Needed for various bits of
722 void intel_wait_for_vblank(struct drm_device *dev, int pipe)
724 struct drm_i915_private *dev_priv = dev->dev_private;
725 int pipestat_reg = PIPESTAT(pipe);
727 /* Clear existing vblank status. Note this will clear any other
728 * sticky status fields as well.
730 * This races with i915_driver_irq_handler() with the result
731 * that either function could miss a vblank event. Here it is not
732 * fatal, as we will either wait upon the next vblank interrupt or
733 * timeout. Generally speaking intel_wait_for_vblank() is only
734 * called during modeset at which time the GPU should be idle and
735 * should *not* be performing page flips and thus not waiting on
737 * Currently, the result of us stealing a vblank from the irq
738 * handler is that a single frame will be skipped during swapbuffers.
740 I915_WRITE(pipestat_reg,
741 I915_READ(pipestat_reg) | PIPE_VBLANK_INTERRUPT_STATUS);
743 /* Wait for vblank interrupt bit to set */
744 if (wait_for(I915_READ(pipestat_reg) &
745 PIPE_VBLANK_INTERRUPT_STATUS,
747 DRM_DEBUG_KMS("vblank wait timed out\n");
751 * intel_wait_for_pipe_off - wait for pipe to turn off
753 * @pipe: pipe to wait for
755 * After disabling a pipe, we can't wait for vblank in the usual way,
756 * spinning on the vblank interrupt status bit, since we won't actually
757 * see an interrupt when the pipe is disabled.
760 * wait for the pipe register state bit to turn off
763 * wait for the display line value to settle (it usually
764 * ends up stopping at the start of the next frame).
767 void intel_wait_for_pipe_off(struct drm_device *dev, int pipe)
769 struct drm_i915_private *dev_priv = dev->dev_private;
771 if (INTEL_INFO(dev)->gen >= 4) {
772 int reg = PIPECONF(pipe);
774 /* Wait for the Pipe State to go off */
775 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
777 DRM_DEBUG_KMS("pipe_off wait timed out\n");
780 int reg = PIPEDSL(pipe);
781 unsigned long timeout = jiffies + msecs_to_jiffies(100);
783 /* Wait for the display line to settle */
785 last_line = I915_READ(reg) & DSL_LINEMASK;
787 } while (((I915_READ(reg) & DSL_LINEMASK) != last_line) &&
788 time_after(timeout, jiffies));
789 if (time_after(jiffies, timeout))
790 DRM_DEBUG_KMS("pipe_off wait timed out\n");
794 static const char *state_string(bool enabled)
796 return enabled ? "on" : "off";
799 /* Only for pre-ILK configs */
800 static void assert_pll(struct drm_i915_private *dev_priv,
801 enum pipe pipe, bool state)
808 val = I915_READ(reg);
809 cur_state = !!(val & DPLL_VCO_ENABLE);
810 WARN(cur_state != state,
811 "PLL state assertion failure (expected %s, current %s)\n",
812 state_string(state), state_string(cur_state));
814 #define assert_pll_enabled(d, p) assert_pll(d, p, true)
815 #define assert_pll_disabled(d, p) assert_pll(d, p, false)
818 static void assert_pch_pll(struct drm_i915_private *dev_priv,
819 enum pipe pipe, bool state)
825 if (HAS_PCH_CPT(dev_priv->dev)) {
828 pch_dpll = I915_READ(PCH_DPLL_SEL);
830 /* Make sure the selected PLL is enabled to the transcoder */
831 WARN(!((pch_dpll >> (4 * pipe)) & 8),
832 "transcoder %d PLL not enabled\n", pipe);
834 /* Convert the transcoder pipe number to a pll pipe number */
835 pipe = (pch_dpll >> (4 * pipe)) & 1;
838 reg = PCH_DPLL(pipe);
839 val = I915_READ(reg);
840 cur_state = !!(val & DPLL_VCO_ENABLE);
841 WARN(cur_state != state,
842 "PCH PLL state assertion failure (expected %s, current %s)\n",
843 state_string(state), state_string(cur_state));
845 #define assert_pch_pll_enabled(d, p) assert_pch_pll(d, p, true)
846 #define assert_pch_pll_disabled(d, p) assert_pch_pll(d, p, false)
848 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
849 enum pipe pipe, bool state)
855 reg = FDI_TX_CTL(pipe);
856 val = I915_READ(reg);
857 cur_state = !!(val & FDI_TX_ENABLE);
858 WARN(cur_state != state,
859 "FDI TX state assertion failure (expected %s, current %s)\n",
860 state_string(state), state_string(cur_state));
862 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
863 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
865 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
866 enum pipe pipe, bool state)
872 reg = FDI_RX_CTL(pipe);
873 val = I915_READ(reg);
874 cur_state = !!(val & FDI_RX_ENABLE);
875 WARN(cur_state != state,
876 "FDI RX state assertion failure (expected %s, current %s)\n",
877 state_string(state), state_string(cur_state));
879 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
880 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
882 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
888 /* ILK FDI PLL is always enabled */
889 if (dev_priv->info->gen == 5)
892 reg = FDI_TX_CTL(pipe);
893 val = I915_READ(reg);
894 WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
897 static void assert_fdi_rx_pll_enabled(struct drm_i915_private *dev_priv,
903 reg = FDI_RX_CTL(pipe);
904 val = I915_READ(reg);
905 WARN(!(val & FDI_RX_PLL_ENABLE), "FDI RX PLL assertion failure, should be active but is disabled\n");
908 static void assert_panel_unlocked(struct drm_i915_private *dev_priv,
911 int pp_reg, lvds_reg;
913 enum pipe panel_pipe = PIPE_A;
916 if (HAS_PCH_SPLIT(dev_priv->dev)) {
917 pp_reg = PCH_PP_CONTROL;
924 val = I915_READ(pp_reg);
925 if (!(val & PANEL_POWER_ON) ||
926 ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS))
929 if (I915_READ(lvds_reg) & LVDS_PIPEB_SELECT)
932 WARN(panel_pipe == pipe && locked,
933 "panel assertion failure, pipe %c regs locked\n",
937 static void assert_pipe(struct drm_i915_private *dev_priv,
938 enum pipe pipe, bool state)
944 reg = PIPECONF(pipe);
945 val = I915_READ(reg);
946 cur_state = !!(val & PIPECONF_ENABLE);
947 WARN(cur_state != state,
948 "pipe %c assertion failure (expected %s, current %s)\n",
949 pipe_name(pipe), state_string(state), state_string(cur_state));
951 #define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
952 #define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
954 static void assert_plane_enabled(struct drm_i915_private *dev_priv,
960 reg = DSPCNTR(plane);
961 val = I915_READ(reg);
962 WARN(!(val & DISPLAY_PLANE_ENABLE),
963 "plane %c assertion failure, should be active but is disabled\n",
967 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
974 /* Planes are fixed to pipes on ILK+ */
975 if (HAS_PCH_SPLIT(dev_priv->dev))
978 /* Need to check both planes against the pipe */
979 for (i = 0; i < 2; i++) {
981 val = I915_READ(reg);
982 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
983 DISPPLANE_SEL_PIPE_SHIFT;
984 WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
985 "plane %c assertion failure, should be off on pipe %c but is still active\n",
986 plane_name(i), pipe_name(pipe));
990 static void assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
995 val = I915_READ(PCH_DREF_CONTROL);
996 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
997 DREF_SUPERSPREAD_SOURCE_MASK));
998 WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
1001 static void assert_transcoder_disabled(struct drm_i915_private *dev_priv,
1008 reg = TRANSCONF(pipe);
1009 val = I915_READ(reg);
1010 enabled = !!(val & TRANS_ENABLE);
1012 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1016 static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1017 enum pipe pipe, u32 port_sel, u32 val)
1019 if ((val & DP_PORT_EN) == 0)
1022 if (HAS_PCH_CPT(dev_priv->dev)) {
1023 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1024 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1025 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1028 if ((val & DP_PIPE_MASK) != (pipe << 30))
1034 static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1035 enum pipe pipe, u32 val)
1037 if ((val & PORT_ENABLE) == 0)
1040 if (HAS_PCH_CPT(dev_priv->dev)) {
1041 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1044 if ((val & TRANSCODER_MASK) != TRANSCODER(pipe))
1050 static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1051 enum pipe pipe, u32 val)
1053 if ((val & LVDS_PORT_EN) == 0)
1056 if (HAS_PCH_CPT(dev_priv->dev)) {
1057 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1060 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1066 static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1067 enum pipe pipe, u32 val)
1069 if ((val & ADPA_DAC_ENABLE) == 0)
1071 if (HAS_PCH_CPT(dev_priv->dev)) {
1072 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1075 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1081 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1082 enum pipe pipe, int reg, u32 port_sel)
1084 u32 val = I915_READ(reg);
1085 WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
1086 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
1087 reg, pipe_name(pipe));
1090 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1091 enum pipe pipe, int reg)
1093 u32 val = I915_READ(reg);
1094 WARN(hdmi_pipe_enabled(dev_priv, pipe, val),
1095 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
1096 reg, pipe_name(pipe));
1099 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1105 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1106 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1107 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1110 val = I915_READ(reg);
1111 WARN(adpa_pipe_enabled(dev_priv, pipe, val),
1112 "PCH VGA enabled on transcoder %c, should be disabled\n",
1116 val = I915_READ(reg);
1117 WARN(lvds_pipe_enabled(dev_priv, pipe, val),
1118 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1121 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIB);
1122 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIC);
1123 assert_pch_hdmi_disabled(dev_priv, pipe, HDMID);
1127 * intel_enable_pll - enable a PLL
1128 * @dev_priv: i915 private structure
1129 * @pipe: pipe PLL to enable
1131 * Enable @pipe's PLL so we can start pumping pixels from a plane. Check to
1132 * make sure the PLL reg is writable first though, since the panel write
1133 * protect mechanism may be enabled.
1135 * Note! This is for pre-ILK only.
1137 static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1142 /* No really, not for ILK+ */
1143 BUG_ON(dev_priv->info->gen >= 5);
1145 /* PLL is protected by panel, make sure we can write it */
1146 if (IS_MOBILE(dev_priv->dev) && !IS_I830(dev_priv->dev))
1147 assert_panel_unlocked(dev_priv, pipe);
1150 val = I915_READ(reg);
1151 val |= DPLL_VCO_ENABLE;
1153 /* We do this three times for luck */
1154 I915_WRITE(reg, val);
1156 udelay(150); /* wait for warmup */
1157 I915_WRITE(reg, val);
1159 udelay(150); /* wait for warmup */
1160 I915_WRITE(reg, val);
1162 udelay(150); /* wait for warmup */
1166 * intel_disable_pll - disable a PLL
1167 * @dev_priv: i915 private structure
1168 * @pipe: pipe PLL to disable
1170 * Disable the PLL for @pipe, making sure the pipe is off first.
1172 * Note! This is for pre-ILK only.
1174 static void intel_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1179 /* Don't disable pipe A or pipe A PLLs if needed */
1180 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1183 /* Make sure the pipe isn't still relying on us */
1184 assert_pipe_disabled(dev_priv, pipe);
1187 val = I915_READ(reg);
1188 val &= ~DPLL_VCO_ENABLE;
1189 I915_WRITE(reg, val);
1194 * intel_enable_pch_pll - enable PCH PLL
1195 * @dev_priv: i915 private structure
1196 * @pipe: pipe PLL to enable
1198 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1199 * drives the transcoder clock.
1201 static void intel_enable_pch_pll(struct drm_i915_private *dev_priv,
1210 /* PCH only available on ILK+ */
1211 BUG_ON(dev_priv->info->gen < 5);
1213 /* PCH refclock must be enabled first */
1214 assert_pch_refclk_enabled(dev_priv);
1216 reg = PCH_DPLL(pipe);
1217 val = I915_READ(reg);
1218 val |= DPLL_VCO_ENABLE;
1219 I915_WRITE(reg, val);
1224 static void intel_disable_pch_pll(struct drm_i915_private *dev_priv,
1233 /* PCH only available on ILK+ */
1234 BUG_ON(dev_priv->info->gen < 5);
1236 /* Make sure transcoder isn't still depending on us */
1237 assert_transcoder_disabled(dev_priv, pipe);
1239 reg = PCH_DPLL(pipe);
1240 val = I915_READ(reg);
1241 val &= ~DPLL_VCO_ENABLE;
1242 I915_WRITE(reg, val);
1247 static void intel_enable_transcoder(struct drm_i915_private *dev_priv,
1253 /* PCH only available on ILK+ */
1254 BUG_ON(dev_priv->info->gen < 5);
1256 /* Make sure PCH DPLL is enabled */
1257 assert_pch_pll_enabled(dev_priv, pipe);
1259 /* FDI must be feeding us bits for PCH ports */
1260 assert_fdi_tx_enabled(dev_priv, pipe);
1261 assert_fdi_rx_enabled(dev_priv, pipe);
1263 reg = TRANSCONF(pipe);
1264 val = I915_READ(reg);
1266 if (HAS_PCH_IBX(dev_priv->dev)) {
1268 * make the BPC in transcoder be consistent with
1269 * that in pipeconf reg.
1271 val &= ~PIPE_BPC_MASK;
1272 val |= I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK;
1274 I915_WRITE(reg, val | TRANS_ENABLE);
1275 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
1276 DRM_ERROR("failed to enable transcoder %d\n", pipe);
1279 static void intel_disable_transcoder(struct drm_i915_private *dev_priv,
1285 /* FDI relies on the transcoder */
1286 assert_fdi_tx_disabled(dev_priv, pipe);
1287 assert_fdi_rx_disabled(dev_priv, pipe);
1289 /* Ports must be off as well */
1290 assert_pch_ports_disabled(dev_priv, pipe);
1292 reg = TRANSCONF(pipe);
1293 val = I915_READ(reg);
1294 val &= ~TRANS_ENABLE;
1295 I915_WRITE(reg, val);
1296 /* wait for PCH transcoder off, transcoder state */
1297 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
1298 DRM_ERROR("failed to disable transcoder %d\n", pipe);
1302 * intel_enable_pipe - enable a pipe, asserting requirements
1303 * @dev_priv: i915 private structure
1304 * @pipe: pipe to enable
1305 * @pch_port: on ILK+, is this pipe driving a PCH port or not
1307 * Enable @pipe, making sure that various hardware specific requirements
1308 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
1310 * @pipe should be %PIPE_A or %PIPE_B.
1312 * Will wait until the pipe is actually running (i.e. first vblank) before
1315 static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
1322 * A pipe without a PLL won't actually be able to drive bits from
1323 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
1326 if (!HAS_PCH_SPLIT(dev_priv->dev))
1327 assert_pll_enabled(dev_priv, pipe);
1330 /* if driving the PCH, we need FDI enabled */
1331 assert_fdi_rx_pll_enabled(dev_priv, pipe);
1332 assert_fdi_tx_pll_enabled(dev_priv, pipe);
1334 /* FIXME: assert CPU port conditions for SNB+ */
1337 reg = PIPECONF(pipe);
1338 val = I915_READ(reg);
1339 if (val & PIPECONF_ENABLE)
1342 I915_WRITE(reg, val | PIPECONF_ENABLE);
1343 intel_wait_for_vblank(dev_priv->dev, pipe);
1347 * intel_disable_pipe - disable a pipe, asserting requirements
1348 * @dev_priv: i915 private structure
1349 * @pipe: pipe to disable
1351 * Disable @pipe, making sure that various hardware specific requirements
1352 * are met, if applicable, e.g. plane disabled, panel fitter off, etc.
1354 * @pipe should be %PIPE_A or %PIPE_B.
1356 * Will wait until the pipe has shut down before returning.
1358 static void intel_disable_pipe(struct drm_i915_private *dev_priv,
1365 * Make sure planes won't keep trying to pump pixels to us,
1366 * or we might hang the display.
1368 assert_planes_disabled(dev_priv, pipe);
1370 /* Don't disable pipe A or pipe A PLLs if needed */
1371 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1374 reg = PIPECONF(pipe);
1375 val = I915_READ(reg);
1376 if ((val & PIPECONF_ENABLE) == 0)
1379 I915_WRITE(reg, val & ~PIPECONF_ENABLE);
1380 intel_wait_for_pipe_off(dev_priv->dev, pipe);
1384 * Plane regs are double buffered, going from enabled->disabled needs a
1385 * trigger in order to latch. The display address reg provides this.
1387 static void intel_flush_display_plane(struct drm_i915_private *dev_priv,
1390 I915_WRITE(DSPADDR(plane), I915_READ(DSPADDR(plane)));
1391 I915_WRITE(DSPSURF(plane), I915_READ(DSPSURF(plane)));
1395 * intel_enable_plane - enable a display plane on a given pipe
1396 * @dev_priv: i915 private structure
1397 * @plane: plane to enable
1398 * @pipe: pipe being fed
1400 * Enable @plane on @pipe, making sure that @pipe is running first.
1402 static void intel_enable_plane(struct drm_i915_private *dev_priv,
1403 enum plane plane, enum pipe pipe)
1408 /* If the pipe isn't enabled, we can't pump pixels and may hang */
1409 assert_pipe_enabled(dev_priv, pipe);
1411 reg = DSPCNTR(plane);
1412 val = I915_READ(reg);
1413 if (val & DISPLAY_PLANE_ENABLE)
1416 I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
1417 intel_flush_display_plane(dev_priv, plane);
1418 intel_wait_for_vblank(dev_priv->dev, pipe);
1422 * intel_disable_plane - disable a display plane
1423 * @dev_priv: i915 private structure
1424 * @plane: plane to disable
1425 * @pipe: pipe consuming the data
1427 * Disable @plane; should be an independent operation.
1429 static void intel_disable_plane(struct drm_i915_private *dev_priv,
1430 enum plane plane, enum pipe pipe)
1435 reg = DSPCNTR(plane);
1436 val = I915_READ(reg);
1437 if ((val & DISPLAY_PLANE_ENABLE) == 0)
1440 I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
1441 intel_flush_display_plane(dev_priv, plane);
1442 intel_wait_for_vblank(dev_priv->dev, pipe);
1445 static void disable_pch_dp(struct drm_i915_private *dev_priv,
1446 enum pipe pipe, int reg, u32 port_sel)
1448 u32 val = I915_READ(reg);
1449 if (dp_pipe_enabled(dev_priv, pipe, port_sel, val)) {
1450 DRM_DEBUG_KMS("Disabling pch dp %x on pipe %d\n", reg, pipe);
1451 I915_WRITE(reg, val & ~DP_PORT_EN);
1455 static void disable_pch_hdmi(struct drm_i915_private *dev_priv,
1456 enum pipe pipe, int reg)
1458 u32 val = I915_READ(reg);
1459 if (hdmi_pipe_enabled(dev_priv, pipe, val)) {
1460 DRM_DEBUG_KMS("Disabling pch HDMI %x on pipe %d\n",
1462 I915_WRITE(reg, val & ~PORT_ENABLE);
1466 /* Disable any ports connected to this transcoder */
1467 static void intel_disable_pch_ports(struct drm_i915_private *dev_priv,
1472 val = I915_READ(PCH_PP_CONTROL);
1473 I915_WRITE(PCH_PP_CONTROL, val | PANEL_UNLOCK_REGS);
1475 disable_pch_dp(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1476 disable_pch_dp(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1477 disable_pch_dp(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1480 val = I915_READ(reg);
1481 if (adpa_pipe_enabled(dev_priv, pipe, val))
1482 I915_WRITE(reg, val & ~ADPA_DAC_ENABLE);
1485 val = I915_READ(reg);
1486 if (lvds_pipe_enabled(dev_priv, pipe, val)) {
1487 DRM_DEBUG_KMS("disable lvds on pipe %d val 0x%08x\n", pipe, val);
1488 I915_WRITE(reg, val & ~LVDS_PORT_EN);
1493 disable_pch_hdmi(dev_priv, pipe, HDMIB);
1494 disable_pch_hdmi(dev_priv, pipe, HDMIC);
1495 disable_pch_hdmi(dev_priv, pipe, HDMID);
1498 static void i8xx_disable_fbc(struct drm_device *dev)
1500 struct drm_i915_private *dev_priv = dev->dev_private;
1503 /* Disable compression */
1504 fbc_ctl = I915_READ(FBC_CONTROL);
1505 if ((fbc_ctl & FBC_CTL_EN) == 0)
1508 fbc_ctl &= ~FBC_CTL_EN;
1509 I915_WRITE(FBC_CONTROL, fbc_ctl);
1511 /* Wait for compressing bit to clear */
1512 if (wait_for((I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) == 0, 10)) {
1513 DRM_DEBUG_KMS("FBC idle timed out\n");
1517 DRM_DEBUG_KMS("disabled FBC\n");
1520 static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1522 struct drm_device *dev = crtc->dev;
1523 struct drm_i915_private *dev_priv = dev->dev_private;
1524 struct drm_framebuffer *fb = crtc->fb;
1525 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1526 struct drm_i915_gem_object *obj = intel_fb->obj;
1527 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1530 u32 fbc_ctl, fbc_ctl2;
1532 cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
1533 if (fb->pitch < cfb_pitch)
1534 cfb_pitch = fb->pitch;
1536 /* FBC_CTL wants 64B units */
1537 cfb_pitch = (cfb_pitch / 64) - 1;
1538 plane = intel_crtc->plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
1540 /* Clear old tags */
1541 for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
1542 I915_WRITE(FBC_TAG + (i * 4), 0);
1545 fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | FBC_CTL_CPU_FENCE;
1547 I915_WRITE(FBC_CONTROL2, fbc_ctl2);
1548 I915_WRITE(FBC_FENCE_OFF, crtc->y);
1551 fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
1553 fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
1554 fbc_ctl |= (cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
1555 fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
1556 fbc_ctl |= obj->fence_reg;
1557 I915_WRITE(FBC_CONTROL, fbc_ctl);
1559 DRM_DEBUG_KMS("enabled FBC, pitch %d, yoff %d, plane %d, ",
1560 cfb_pitch, crtc->y, intel_crtc->plane);
1563 static bool i8xx_fbc_enabled(struct drm_device *dev)
1565 struct drm_i915_private *dev_priv = dev->dev_private;
1567 return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
1570 static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1572 struct drm_device *dev = crtc->dev;
1573 struct drm_i915_private *dev_priv = dev->dev_private;
1574 struct drm_framebuffer *fb = crtc->fb;
1575 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1576 struct drm_i915_gem_object *obj = intel_fb->obj;
1577 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1578 int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
1579 unsigned long stall_watermark = 200;
1582 dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
1583 dpfc_ctl |= DPFC_CTL_FENCE_EN | obj->fence_reg;
1584 I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
1586 I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
1587 (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
1588 (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
1589 I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
1592 I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
1594 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
1597 static void g4x_disable_fbc(struct drm_device *dev)
1599 struct drm_i915_private *dev_priv = dev->dev_private;
1602 /* Disable compression */
1603 dpfc_ctl = I915_READ(DPFC_CONTROL);
1604 if (dpfc_ctl & DPFC_CTL_EN) {
1605 dpfc_ctl &= ~DPFC_CTL_EN;
1606 I915_WRITE(DPFC_CONTROL, dpfc_ctl);
1608 DRM_DEBUG_KMS("disabled FBC\n");
1612 static bool g4x_fbc_enabled(struct drm_device *dev)
1614 struct drm_i915_private *dev_priv = dev->dev_private;
1616 return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
1619 static void sandybridge_blit_fbc_update(struct drm_device *dev)
1621 struct drm_i915_private *dev_priv = dev->dev_private;
1624 /* Make sure blitter notifies FBC of writes */
1625 gen6_gt_force_wake_get(dev_priv);
1626 blt_ecoskpd = I915_READ(GEN6_BLITTER_ECOSKPD);
1627 blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY <<
1628 GEN6_BLITTER_LOCK_SHIFT;
1629 I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
1630 blt_ecoskpd |= GEN6_BLITTER_FBC_NOTIFY;
1631 I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
1632 blt_ecoskpd &= ~(GEN6_BLITTER_FBC_NOTIFY <<
1633 GEN6_BLITTER_LOCK_SHIFT);
1634 I915_WRITE(GEN6_BLITTER_ECOSKPD, blt_ecoskpd);
1635 POSTING_READ(GEN6_BLITTER_ECOSKPD);
1636 gen6_gt_force_wake_put(dev_priv);
1639 static void ironlake_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1641 struct drm_device *dev = crtc->dev;
1642 struct drm_i915_private *dev_priv = dev->dev_private;
1643 struct drm_framebuffer *fb = crtc->fb;
1644 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1645 struct drm_i915_gem_object *obj = intel_fb->obj;
1646 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1647 int plane = intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : DPFC_CTL_PLANEB;
1648 unsigned long stall_watermark = 200;
1651 dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
1652 dpfc_ctl &= DPFC_RESERVED;
1653 dpfc_ctl |= (plane | DPFC_CTL_LIMIT_1X);
1654 /* Set persistent mode for front-buffer rendering, ala X. */
1655 dpfc_ctl |= DPFC_CTL_PERSISTENT_MODE;
1656 dpfc_ctl |= (DPFC_CTL_FENCE_EN | obj->fence_reg);
1657 I915_WRITE(ILK_DPFC_CHICKEN, DPFC_HT_MODIFY);
1659 I915_WRITE(ILK_DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
1660 (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
1661 (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
1662 I915_WRITE(ILK_DPFC_FENCE_YOFF, crtc->y);
1663 I915_WRITE(ILK_FBC_RT_BASE, obj->gtt_offset | ILK_FBC_RT_VALID);
1665 I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl | DPFC_CTL_EN);
1668 I915_WRITE(SNB_DPFC_CTL_SA,
1669 SNB_CPU_FENCE_ENABLE | obj->fence_reg);
1670 I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y);
1671 sandybridge_blit_fbc_update(dev);
1674 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
1677 static void ironlake_disable_fbc(struct drm_device *dev)
1679 struct drm_i915_private *dev_priv = dev->dev_private;
1682 /* Disable compression */
1683 dpfc_ctl = I915_READ(ILK_DPFC_CONTROL);
1684 if (dpfc_ctl & DPFC_CTL_EN) {
1685 dpfc_ctl &= ~DPFC_CTL_EN;
1686 I915_WRITE(ILK_DPFC_CONTROL, dpfc_ctl);
1688 DRM_DEBUG_KMS("disabled FBC\n");
1692 static bool ironlake_fbc_enabled(struct drm_device *dev)
1694 struct drm_i915_private *dev_priv = dev->dev_private;
1696 return I915_READ(ILK_DPFC_CONTROL) & DPFC_CTL_EN;
1699 bool intel_fbc_enabled(struct drm_device *dev)
1701 struct drm_i915_private *dev_priv = dev->dev_private;
1703 if (!dev_priv->display.fbc_enabled)
1706 return dev_priv->display.fbc_enabled(dev);
1709 static void intel_fbc_work_fn(struct work_struct *__work)
1711 struct intel_fbc_work *work =
1712 container_of(to_delayed_work(__work),
1713 struct intel_fbc_work, work);
1714 struct drm_device *dev = work->crtc->dev;
1715 struct drm_i915_private *dev_priv = dev->dev_private;
1717 mutex_lock(&dev->struct_mutex);
1718 if (work == dev_priv->fbc_work) {
1719 /* Double check that we haven't switched fb without cancelling
1722 if (work->crtc->fb == work->fb) {
1723 dev_priv->display.enable_fbc(work->crtc,
1726 dev_priv->cfb_plane = to_intel_crtc(work->crtc)->plane;
1727 dev_priv->cfb_fb = work->crtc->fb->base.id;
1728 dev_priv->cfb_y = work->crtc->y;
1731 dev_priv->fbc_work = NULL;
1733 mutex_unlock(&dev->struct_mutex);
1738 static void intel_cancel_fbc_work(struct drm_i915_private *dev_priv)
1740 if (dev_priv->fbc_work == NULL)
1743 DRM_DEBUG_KMS("cancelling pending FBC enable\n");
1745 /* Synchronisation is provided by struct_mutex and checking of
1746 * dev_priv->fbc_work, so we can perform the cancellation
1747 * entirely asynchronously.
1749 if (cancel_delayed_work(&dev_priv->fbc_work->work))
1750 /* tasklet was killed before being run, clean up */
1751 kfree(dev_priv->fbc_work);
1753 /* Mark the work as no longer wanted so that if it does
1754 * wake-up (because the work was already running and waiting
1755 * for our mutex), it will discover that is no longer
1758 dev_priv->fbc_work = NULL;
1761 static void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1763 struct intel_fbc_work *work;
1764 struct drm_device *dev = crtc->dev;
1765 struct drm_i915_private *dev_priv = dev->dev_private;
1767 if (!dev_priv->display.enable_fbc)
1770 intel_cancel_fbc_work(dev_priv);
1772 work = kzalloc(sizeof *work, GFP_KERNEL);
1774 dev_priv->display.enable_fbc(crtc, interval);
1779 work->fb = crtc->fb;
1780 work->interval = interval;
1781 INIT_DELAYED_WORK(&work->work, intel_fbc_work_fn);
1783 dev_priv->fbc_work = work;
1785 DRM_DEBUG_KMS("scheduling delayed FBC enable\n");
1787 /* Delay the actual enabling to let pageflipping cease and the
1788 * display to settle before starting the compression. Note that
1789 * this delay also serves a second purpose: it allows for a
1790 * vblank to pass after disabling the FBC before we attempt
1791 * to modify the control registers.
1793 * A more complicated solution would involve tracking vblanks
1794 * following the termination of the page-flipping sequence
1795 * and indeed performing the enable as a co-routine and not
1796 * waiting synchronously upon the vblank.
1798 schedule_delayed_work(&work->work, msecs_to_jiffies(50));
1801 void intel_disable_fbc(struct drm_device *dev)
1803 struct drm_i915_private *dev_priv = dev->dev_private;
1805 intel_cancel_fbc_work(dev_priv);
1807 if (!dev_priv->display.disable_fbc)
1810 dev_priv->display.disable_fbc(dev);
1811 dev_priv->cfb_plane = -1;
1815 * intel_update_fbc - enable/disable FBC as needed
1816 * @dev: the drm_device
1818 * Set up the framebuffer compression hardware at mode set time. We
1819 * enable it if possible:
1820 * - plane A only (on pre-965)
1821 * - no pixel mulitply/line duplication
1822 * - no alpha buffer discard
1824 * - framebuffer <= 2048 in width, 1536 in height
1826 * We can't assume that any compression will take place (worst case),
1827 * so the compressed buffer has to be the same size as the uncompressed
1828 * one. It also must reside (along with the line length buffer) in
1831 * We need to enable/disable FBC on a global basis.
1833 static void intel_update_fbc(struct drm_device *dev)
1835 struct drm_i915_private *dev_priv = dev->dev_private;
1836 struct drm_crtc *crtc = NULL, *tmp_crtc;
1837 struct intel_crtc *intel_crtc;
1838 struct drm_framebuffer *fb;
1839 struct intel_framebuffer *intel_fb;
1840 struct drm_i915_gem_object *obj;
1843 DRM_DEBUG_KMS("\n");
1845 if (!i915_powersave)
1848 if (!I915_HAS_FBC(dev))
1852 * If FBC is already on, we just have to verify that we can
1853 * keep it that way...
1854 * Need to disable if:
1855 * - more than one pipe is active
1856 * - changing FBC params (stride, fence, mode)
1857 * - new fb is too large to fit in compressed buffer
1858 * - going to an unsupported config (interlace, pixel multiply, etc.)
1860 list_for_each_entry(tmp_crtc, &dev->mode_config.crtc_list, head) {
1861 if (tmp_crtc->enabled && tmp_crtc->fb) {
1863 DRM_DEBUG_KMS("more than one pipe active, disabling compression\n");
1864 dev_priv->no_fbc_reason = FBC_MULTIPLE_PIPES;
1871 if (!crtc || crtc->fb == NULL) {
1872 DRM_DEBUG_KMS("no output, disabling\n");
1873 dev_priv->no_fbc_reason = FBC_NO_OUTPUT;
1877 intel_crtc = to_intel_crtc(crtc);
1879 intel_fb = to_intel_framebuffer(fb);
1880 obj = intel_fb->obj;
1882 enable_fbc = i915_enable_fbc;
1883 if (enable_fbc < 0) {
1884 DRM_DEBUG_KMS("fbc set to per-chip default\n");
1886 if (INTEL_INFO(dev)->gen <= 6)
1890 DRM_DEBUG_KMS("fbc disabled per module param\n");
1891 dev_priv->no_fbc_reason = FBC_MODULE_PARAM;
1894 if (intel_fb->obj->base.size > dev_priv->cfb_size) {
1895 DRM_DEBUG_KMS("framebuffer too large, disabling "
1897 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1900 if ((crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) ||
1901 (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)) {
1902 DRM_DEBUG_KMS("mode incompatible with compression, "
1904 dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE;
1907 if ((crtc->mode.hdisplay > 2048) ||
1908 (crtc->mode.vdisplay > 1536)) {
1909 DRM_DEBUG_KMS("mode too large for compression, disabling\n");
1910 dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
1913 if ((IS_I915GM(dev) || IS_I945GM(dev)) && intel_crtc->plane != 0) {
1914 DRM_DEBUG_KMS("plane not 0, disabling compression\n");
1915 dev_priv->no_fbc_reason = FBC_BAD_PLANE;
1919 /* The use of a CPU fence is mandatory in order to detect writes
1920 * by the CPU to the scanout and trigger updates to the FBC.
1922 if (obj->tiling_mode != I915_TILING_X ||
1923 obj->fence_reg == I915_FENCE_REG_NONE) {
1924 DRM_DEBUG_KMS("framebuffer not tiled or fenced, disabling compression\n");
1925 dev_priv->no_fbc_reason = FBC_NOT_TILED;
1929 /* If the kernel debugger is active, always disable compression */
1930 if (in_dbg_master())
1933 /* If the scanout has not changed, don't modify the FBC settings.
1934 * Note that we make the fundamental assumption that the fb->obj
1935 * cannot be unpinned (and have its GTT offset and fence revoked)
1936 * without first being decoupled from the scanout and FBC disabled.
1938 if (dev_priv->cfb_plane == intel_crtc->plane &&
1939 dev_priv->cfb_fb == fb->base.id &&
1940 dev_priv->cfb_y == crtc->y)
1943 if (intel_fbc_enabled(dev)) {
1944 /* We update FBC along two paths, after changing fb/crtc
1945 * configuration (modeswitching) and after page-flipping
1946 * finishes. For the latter, we know that not only did
1947 * we disable the FBC at the start of the page-flip
1948 * sequence, but also more than one vblank has passed.
1950 * For the former case of modeswitching, it is possible
1951 * to switch between two FBC valid configurations
1952 * instantaneously so we do need to disable the FBC
1953 * before we can modify its control registers. We also
1954 * have to wait for the next vblank for that to take
1955 * effect. However, since we delay enabling FBC we can
1956 * assume that a vblank has passed since disabling and
1957 * that we can safely alter the registers in the deferred
1960 * In the scenario that we go from a valid to invalid
1961 * and then back to valid FBC configuration we have
1962 * no strict enforcement that a vblank occurred since
1963 * disabling the FBC. However, along all current pipe
1964 * disabling paths we do need to wait for a vblank at
1965 * some point. And we wait before enabling FBC anyway.
1967 DRM_DEBUG_KMS("disabling active FBC for update\n");
1968 intel_disable_fbc(dev);
1971 intel_enable_fbc(crtc, 500);
1975 /* Multiple disables should be harmless */
1976 if (intel_fbc_enabled(dev)) {
1977 DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
1978 intel_disable_fbc(dev);
1983 intel_pin_and_fence_fb_obj(struct drm_device *dev,
1984 struct drm_i915_gem_object *obj,
1985 struct intel_ring_buffer *pipelined)
1987 struct drm_i915_private *dev_priv = dev->dev_private;
1991 switch (obj->tiling_mode) {
1992 case I915_TILING_NONE:
1993 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
1994 alignment = 128 * 1024;
1995 else if (INTEL_INFO(dev)->gen >= 4)
1996 alignment = 4 * 1024;
1998 alignment = 64 * 1024;
2001 /* pin() will align the object as required by fence */
2005 /* FIXME: Is this true? */
2006 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
2012 dev_priv->mm.interruptible = false;
2013 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
2015 goto err_interruptible;
2017 /* Install a fence for tiled scan-out. Pre-i965 always needs a
2018 * fence, whereas 965+ only requires a fence if using
2019 * framebuffer compression. For simplicity, we always install
2020 * a fence as the cost is not that onerous.
2022 if (obj->tiling_mode != I915_TILING_NONE) {
2023 ret = i915_gem_object_get_fence(obj, pipelined);
2028 dev_priv->mm.interruptible = true;
2032 i915_gem_object_unpin(obj);
2034 dev_priv->mm.interruptible = true;
2038 static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb,
2041 struct drm_device *dev = crtc->dev;
2042 struct drm_i915_private *dev_priv = dev->dev_private;
2043 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2044 struct intel_framebuffer *intel_fb;
2045 struct drm_i915_gem_object *obj;
2046 int plane = intel_crtc->plane;
2047 unsigned long Start, Offset;
2056 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
2060 intel_fb = to_intel_framebuffer(fb);
2061 obj = intel_fb->obj;
2063 reg = DSPCNTR(plane);
2064 dspcntr = I915_READ(reg);
2065 /* Mask out pixel format bits in case we change it */
2066 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
2067 switch (fb->bits_per_pixel) {
2069 dspcntr |= DISPPLANE_8BPP;
2072 if (fb->depth == 15)
2073 dspcntr |= DISPPLANE_15_16BPP;
2075 dspcntr |= DISPPLANE_16BPP;
2079 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
2082 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
2085 if (INTEL_INFO(dev)->gen >= 4) {
2086 if (obj->tiling_mode != I915_TILING_NONE)
2087 dspcntr |= DISPPLANE_TILED;
2089 dspcntr &= ~DISPPLANE_TILED;
2092 I915_WRITE(reg, dspcntr);
2094 Start = obj->gtt_offset;
2095 Offset = y * fb->pitch + x * (fb->bits_per_pixel / 8);
2097 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
2098 Start, Offset, x, y, fb->pitch);
2099 I915_WRITE(DSPSTRIDE(plane), fb->pitch);
2100 if (INTEL_INFO(dev)->gen >= 4) {
2101 I915_WRITE(DSPSURF(plane), Start);
2102 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2103 I915_WRITE(DSPADDR(plane), Offset);
2105 I915_WRITE(DSPADDR(plane), Start + Offset);
2111 static int ironlake_update_plane(struct drm_crtc *crtc,
2112 struct drm_framebuffer *fb, int x, int y)
2114 struct drm_device *dev = crtc->dev;
2115 struct drm_i915_private *dev_priv = dev->dev_private;
2116 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2117 struct intel_framebuffer *intel_fb;
2118 struct drm_i915_gem_object *obj;
2119 int plane = intel_crtc->plane;
2120 unsigned long Start, Offset;
2130 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
2134 intel_fb = to_intel_framebuffer(fb);
2135 obj = intel_fb->obj;
2137 reg = DSPCNTR(plane);
2138 dspcntr = I915_READ(reg);
2139 /* Mask out pixel format bits in case we change it */
2140 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
2141 switch (fb->bits_per_pixel) {
2143 dspcntr |= DISPPLANE_8BPP;
2146 if (fb->depth != 16)
2149 dspcntr |= DISPPLANE_16BPP;
2153 if (fb->depth == 24)
2154 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
2155 else if (fb->depth == 30)
2156 dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
2161 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
2165 if (obj->tiling_mode != I915_TILING_NONE)
2166 dspcntr |= DISPPLANE_TILED;
2168 dspcntr &= ~DISPPLANE_TILED;
2171 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
2173 I915_WRITE(reg, dspcntr);
2175 Start = obj->gtt_offset;
2176 Offset = y * fb->pitch + x * (fb->bits_per_pixel / 8);
2178 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
2179 Start, Offset, x, y, fb->pitch);
2180 I915_WRITE(DSPSTRIDE(plane), fb->pitch);
2181 I915_WRITE(DSPSURF(plane), Start);
2182 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
2183 I915_WRITE(DSPADDR(plane), Offset);
2189 /* Assume fb object is pinned & idle & fenced and just update base pointers */
2191 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
2192 int x, int y, enum mode_set_atomic state)
2194 struct drm_device *dev = crtc->dev;
2195 struct drm_i915_private *dev_priv = dev->dev_private;
2198 ret = dev_priv->display.update_plane(crtc, fb, x, y);
2202 intel_update_fbc(dev);
2203 intel_increase_pllclock(crtc);
2209 intel_finish_fb(struct drm_framebuffer *old_fb)
2211 struct drm_i915_gem_object *obj = to_intel_framebuffer(old_fb)->obj;
2212 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
2213 bool was_interruptible = dev_priv->mm.interruptible;
2216 wait_event(dev_priv->pending_flip_queue,
2217 atomic_read(&dev_priv->mm.wedged) ||
2218 atomic_read(&obj->pending_flip) == 0);
2220 /* Big Hammer, we also need to ensure that any pending
2221 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
2222 * current scanout is retired before unpinning the old
2225 * This should only fail upon a hung GPU, in which case we
2226 * can safely continue.
2228 dev_priv->mm.interruptible = false;
2229 ret = i915_gem_object_finish_gpu(obj);
2230 dev_priv->mm.interruptible = was_interruptible;
2236 intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
2237 struct drm_framebuffer *old_fb)
2239 struct drm_device *dev = crtc->dev;
2240 struct drm_i915_master_private *master_priv;
2241 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2246 DRM_ERROR("No FB bound\n");
2250 switch (intel_crtc->plane) {
2255 if (IS_IVYBRIDGE(dev))
2257 /* fall through otherwise */
2259 DRM_ERROR("no plane for crtc\n");
2263 mutex_lock(&dev->struct_mutex);
2264 ret = intel_pin_and_fence_fb_obj(dev,
2265 to_intel_framebuffer(crtc->fb)->obj,
2268 mutex_unlock(&dev->struct_mutex);
2269 DRM_ERROR("pin & fence failed\n");
2274 intel_finish_fb(old_fb);
2276 ret = intel_pipe_set_base_atomic(crtc, crtc->fb, x, y,
2277 LEAVE_ATOMIC_MODE_SET);
2279 i915_gem_object_unpin(to_intel_framebuffer(crtc->fb)->obj);
2280 mutex_unlock(&dev->struct_mutex);
2281 DRM_ERROR("failed to update base address\n");
2286 intel_wait_for_vblank(dev, intel_crtc->pipe);
2287 i915_gem_object_unpin(to_intel_framebuffer(old_fb)->obj);
2290 mutex_unlock(&dev->struct_mutex);
2292 if (!dev->primary->master)
2295 master_priv = dev->primary->master->driver_priv;
2296 if (!master_priv->sarea_priv)
2299 if (intel_crtc->pipe) {
2300 master_priv->sarea_priv->pipeB_x = x;
2301 master_priv->sarea_priv->pipeB_y = y;
2303 master_priv->sarea_priv->pipeA_x = x;
2304 master_priv->sarea_priv->pipeA_y = y;
2310 static void ironlake_set_pll_edp(struct drm_crtc *crtc, int clock)
2312 struct drm_device *dev = crtc->dev;
2313 struct drm_i915_private *dev_priv = dev->dev_private;
2316 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
2317 dpa_ctl = I915_READ(DP_A);
2318 dpa_ctl &= ~DP_PLL_FREQ_MASK;
2320 if (clock < 200000) {
2322 dpa_ctl |= DP_PLL_FREQ_160MHZ;
2323 /* workaround for 160Mhz:
2324 1) program 0x4600c bits 15:0 = 0x8124
2325 2) program 0x46010 bit 0 = 1
2326 3) program 0x46034 bit 24 = 1
2327 4) program 0x64000 bit 14 = 1
2329 temp = I915_READ(0x4600c);
2331 I915_WRITE(0x4600c, temp | 0x8124);
2333 temp = I915_READ(0x46010);
2334 I915_WRITE(0x46010, temp | 1);
2336 temp = I915_READ(0x46034);
2337 I915_WRITE(0x46034, temp | (1 << 24));
2339 dpa_ctl |= DP_PLL_FREQ_270MHZ;
2341 I915_WRITE(DP_A, dpa_ctl);
2347 static void intel_fdi_normal_train(struct drm_crtc *crtc)
2349 struct drm_device *dev = crtc->dev;
2350 struct drm_i915_private *dev_priv = dev->dev_private;
2351 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2352 int pipe = intel_crtc->pipe;
2355 /* enable normal train */
2356 reg = FDI_TX_CTL(pipe);
2357 temp = I915_READ(reg);
2358 if (IS_IVYBRIDGE(dev)) {
2359 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2360 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
2362 temp &= ~FDI_LINK_TRAIN_NONE;
2363 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
2365 I915_WRITE(reg, temp);
2367 reg = FDI_RX_CTL(pipe);
2368 temp = I915_READ(reg);
2369 if (HAS_PCH_CPT(dev)) {
2370 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2371 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
2373 temp &= ~FDI_LINK_TRAIN_NONE;
2374 temp |= FDI_LINK_TRAIN_NONE;
2376 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
2378 /* wait one idle pattern time */
2382 /* IVB wants error correction enabled */
2383 if (IS_IVYBRIDGE(dev))
2384 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
2385 FDI_FE_ERRC_ENABLE);
2388 /* The FDI link training functions for ILK/Ibexpeak. */
2389 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
2391 struct drm_device *dev = crtc->dev;
2392 struct drm_i915_private *dev_priv = dev->dev_private;
2393 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2394 int pipe = intel_crtc->pipe;
2395 int plane = intel_crtc->plane;
2396 u32 reg, temp, tries;
2398 /* FDI needs bits from pipe & plane first */
2399 assert_pipe_enabled(dev_priv, pipe);
2400 assert_plane_enabled(dev_priv, plane);
2402 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2404 reg = FDI_RX_IMR(pipe);
2405 temp = I915_READ(reg);
2406 temp &= ~FDI_RX_SYMBOL_LOCK;
2407 temp &= ~FDI_RX_BIT_LOCK;
2408 I915_WRITE(reg, temp);
2412 /* enable CPU FDI TX and PCH FDI RX */
2413 reg = FDI_TX_CTL(pipe);
2414 temp = I915_READ(reg);
2416 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2417 temp &= ~FDI_LINK_TRAIN_NONE;
2418 temp |= FDI_LINK_TRAIN_PATTERN_1;
2419 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2421 reg = FDI_RX_CTL(pipe);
2422 temp = I915_READ(reg);
2423 temp &= ~FDI_LINK_TRAIN_NONE;
2424 temp |= FDI_LINK_TRAIN_PATTERN_1;
2425 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2430 /* Ironlake workaround, enable clock pointer after FDI enable*/
2431 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2432 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
2433 FDI_RX_PHASE_SYNC_POINTER_EN);
2435 reg = FDI_RX_IIR(pipe);
2436 for (tries = 0; tries < 5; tries++) {
2437 temp = I915_READ(reg);
2438 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2440 if ((temp & FDI_RX_BIT_LOCK)) {
2441 DRM_DEBUG_KMS("FDI train 1 done.\n");
2442 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2447 DRM_ERROR("FDI train 1 fail!\n");
2450 reg = FDI_TX_CTL(pipe);
2451 temp = I915_READ(reg);
2452 temp &= ~FDI_LINK_TRAIN_NONE;
2453 temp |= FDI_LINK_TRAIN_PATTERN_2;
2454 I915_WRITE(reg, temp);
2456 reg = FDI_RX_CTL(pipe);
2457 temp = I915_READ(reg);
2458 temp &= ~FDI_LINK_TRAIN_NONE;
2459 temp |= FDI_LINK_TRAIN_PATTERN_2;
2460 I915_WRITE(reg, temp);
2465 reg = FDI_RX_IIR(pipe);
2466 for (tries = 0; tries < 5; tries++) {
2467 temp = I915_READ(reg);
2468 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2470 if (temp & FDI_RX_SYMBOL_LOCK) {
2471 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2472 DRM_DEBUG_KMS("FDI train 2 done.\n");
2477 DRM_ERROR("FDI train 2 fail!\n");
2479 DRM_DEBUG_KMS("FDI train done\n");
2483 static const int snb_b_fdi_train_param[] = {
2484 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
2485 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
2486 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
2487 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
2490 /* The FDI link training functions for SNB/Cougarpoint. */
2491 static void gen6_fdi_link_train(struct drm_crtc *crtc)
2493 struct drm_device *dev = crtc->dev;
2494 struct drm_i915_private *dev_priv = dev->dev_private;
2495 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2496 int pipe = intel_crtc->pipe;
2499 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2501 reg = FDI_RX_IMR(pipe);
2502 temp = I915_READ(reg);
2503 temp &= ~FDI_RX_SYMBOL_LOCK;
2504 temp &= ~FDI_RX_BIT_LOCK;
2505 I915_WRITE(reg, temp);
2510 /* enable CPU FDI TX and PCH FDI RX */
2511 reg = FDI_TX_CTL(pipe);
2512 temp = I915_READ(reg);
2514 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2515 temp &= ~FDI_LINK_TRAIN_NONE;
2516 temp |= FDI_LINK_TRAIN_PATTERN_1;
2517 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2519 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2520 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2522 reg = FDI_RX_CTL(pipe);
2523 temp = I915_READ(reg);
2524 if (HAS_PCH_CPT(dev)) {
2525 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2526 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2528 temp &= ~FDI_LINK_TRAIN_NONE;
2529 temp |= FDI_LINK_TRAIN_PATTERN_1;
2531 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2536 for (i = 0; i < 4; i++) {
2537 reg = FDI_TX_CTL(pipe);
2538 temp = I915_READ(reg);
2539 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2540 temp |= snb_b_fdi_train_param[i];
2541 I915_WRITE(reg, temp);
2546 reg = FDI_RX_IIR(pipe);
2547 temp = I915_READ(reg);
2548 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2550 if (temp & FDI_RX_BIT_LOCK) {
2551 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2552 DRM_DEBUG_KMS("FDI train 1 done.\n");
2557 DRM_ERROR("FDI train 1 fail!\n");
2560 reg = FDI_TX_CTL(pipe);
2561 temp = I915_READ(reg);
2562 temp &= ~FDI_LINK_TRAIN_NONE;
2563 temp |= FDI_LINK_TRAIN_PATTERN_2;
2565 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2567 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2569 I915_WRITE(reg, temp);
2571 reg = FDI_RX_CTL(pipe);
2572 temp = I915_READ(reg);
2573 if (HAS_PCH_CPT(dev)) {
2574 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2575 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2577 temp &= ~FDI_LINK_TRAIN_NONE;
2578 temp |= FDI_LINK_TRAIN_PATTERN_2;
2580 I915_WRITE(reg, temp);
2585 for (i = 0; i < 4; i++) {
2586 reg = FDI_TX_CTL(pipe);
2587 temp = I915_READ(reg);
2588 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2589 temp |= snb_b_fdi_train_param[i];
2590 I915_WRITE(reg, temp);
2595 reg = FDI_RX_IIR(pipe);
2596 temp = I915_READ(reg);
2597 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2599 if (temp & FDI_RX_SYMBOL_LOCK) {
2600 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2601 DRM_DEBUG_KMS("FDI train 2 done.\n");
2606 DRM_ERROR("FDI train 2 fail!\n");
2608 DRM_DEBUG_KMS("FDI train done.\n");
2611 /* Manual link training for Ivy Bridge A0 parts */
2612 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
2614 struct drm_device *dev = crtc->dev;
2615 struct drm_i915_private *dev_priv = dev->dev_private;
2616 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2617 int pipe = intel_crtc->pipe;
2620 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2622 reg = FDI_RX_IMR(pipe);
2623 temp = I915_READ(reg);
2624 temp &= ~FDI_RX_SYMBOL_LOCK;
2625 temp &= ~FDI_RX_BIT_LOCK;
2626 I915_WRITE(reg, temp);
2631 /* enable CPU FDI TX and PCH FDI RX */
2632 reg = FDI_TX_CTL(pipe);
2633 temp = I915_READ(reg);
2635 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2636 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
2637 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
2638 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2639 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2640 temp |= FDI_COMPOSITE_SYNC;
2641 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2643 reg = FDI_RX_CTL(pipe);
2644 temp = I915_READ(reg);
2645 temp &= ~FDI_LINK_TRAIN_AUTO;
2646 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2647 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2648 temp |= FDI_COMPOSITE_SYNC;
2649 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2654 for (i = 0; i < 4; i++) {
2655 reg = FDI_TX_CTL(pipe);
2656 temp = I915_READ(reg);
2657 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2658 temp |= snb_b_fdi_train_param[i];
2659 I915_WRITE(reg, temp);
2664 reg = FDI_RX_IIR(pipe);
2665 temp = I915_READ(reg);
2666 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2668 if (temp & FDI_RX_BIT_LOCK ||
2669 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
2670 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2671 DRM_DEBUG_KMS("FDI train 1 done.\n");
2676 DRM_ERROR("FDI train 1 fail!\n");
2679 reg = FDI_TX_CTL(pipe);
2680 temp = I915_READ(reg);
2681 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2682 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
2683 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2684 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2685 I915_WRITE(reg, temp);
2687 reg = FDI_RX_CTL(pipe);
2688 temp = I915_READ(reg);
2689 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2690 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2691 I915_WRITE(reg, temp);
2696 for (i = 0; i < 4; i++) {
2697 reg = FDI_TX_CTL(pipe);
2698 temp = I915_READ(reg);
2699 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2700 temp |= snb_b_fdi_train_param[i];
2701 I915_WRITE(reg, temp);
2706 reg = FDI_RX_IIR(pipe);
2707 temp = I915_READ(reg);
2708 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2710 if (temp & FDI_RX_SYMBOL_LOCK) {
2711 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2712 DRM_DEBUG_KMS("FDI train 2 done.\n");
2717 DRM_ERROR("FDI train 2 fail!\n");
2719 DRM_DEBUG_KMS("FDI train done.\n");
2722 static void ironlake_fdi_pll_enable(struct drm_crtc *crtc)
2724 struct drm_device *dev = crtc->dev;
2725 struct drm_i915_private *dev_priv = dev->dev_private;
2726 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2727 int pipe = intel_crtc->pipe;
2730 /* Write the TU size bits so error detection works */
2731 I915_WRITE(FDI_RX_TUSIZE1(pipe),
2732 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
2734 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
2735 reg = FDI_RX_CTL(pipe);
2736 temp = I915_READ(reg);
2737 temp &= ~((0x7 << 19) | (0x7 << 16));
2738 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2739 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2740 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
2745 /* Switch from Rawclk to PCDclk */
2746 temp = I915_READ(reg);
2747 I915_WRITE(reg, temp | FDI_PCDCLK);
2752 /* Enable CPU FDI TX PLL, always on for Ironlake */
2753 reg = FDI_TX_CTL(pipe);
2754 temp = I915_READ(reg);
2755 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
2756 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
2763 static void ironlake_fdi_disable(struct drm_crtc *crtc)
2765 struct drm_device *dev = crtc->dev;
2766 struct drm_i915_private *dev_priv = dev->dev_private;
2767 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2768 int pipe = intel_crtc->pipe;
2771 /* disable CPU FDI tx and PCH FDI rx */
2772 reg = FDI_TX_CTL(pipe);
2773 temp = I915_READ(reg);
2774 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
2777 reg = FDI_RX_CTL(pipe);
2778 temp = I915_READ(reg);
2779 temp &= ~(0x7 << 16);
2780 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2781 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
2786 /* Ironlake workaround, disable clock pointer after downing FDI */
2787 if (HAS_PCH_IBX(dev)) {
2788 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2789 I915_WRITE(FDI_RX_CHICKEN(pipe),
2790 I915_READ(FDI_RX_CHICKEN(pipe) &
2791 ~FDI_RX_PHASE_SYNC_POINTER_EN));
2794 /* still set train pattern 1 */
2795 reg = FDI_TX_CTL(pipe);
2796 temp = I915_READ(reg);
2797 temp &= ~FDI_LINK_TRAIN_NONE;
2798 temp |= FDI_LINK_TRAIN_PATTERN_1;
2799 I915_WRITE(reg, temp);
2801 reg = FDI_RX_CTL(pipe);
2802 temp = I915_READ(reg);
2803 if (HAS_PCH_CPT(dev)) {
2804 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2805 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2807 temp &= ~FDI_LINK_TRAIN_NONE;
2808 temp |= FDI_LINK_TRAIN_PATTERN_1;
2810 /* BPC in FDI rx is consistent with that in PIPECONF */
2811 temp &= ~(0x07 << 16);
2812 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2813 I915_WRITE(reg, temp);
2820 * When we disable a pipe, we need to clear any pending scanline wait events
2821 * to avoid hanging the ring, which we assume we are waiting on.
2823 static void intel_clear_scanline_wait(struct drm_device *dev)
2825 struct drm_i915_private *dev_priv = dev->dev_private;
2826 struct intel_ring_buffer *ring;
2830 /* Can't break the hang on i8xx */
2833 ring = LP_RING(dev_priv);
2834 tmp = I915_READ_CTL(ring);
2835 if (tmp & RING_WAIT)
2836 I915_WRITE_CTL(ring, tmp);
2839 static bool intel_crtc_has_pending_flip(struct drm_crtc *crtc)
2841 struct drm_device *dev = crtc->dev;
2842 struct drm_i915_private *dev_priv = dev->dev_private;
2843 unsigned long flags;
2846 if (atomic_read(&dev_priv->mm.wedged))
2849 spin_lock_irqsave(&dev->event_lock, flags);
2850 pending = to_intel_crtc(crtc)->unpin_work != NULL;
2851 spin_unlock_irqrestore(&dev->event_lock, flags);
2856 static void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
2858 struct drm_device *dev = crtc->dev;
2859 struct drm_i915_private *dev_priv = dev->dev_private;
2861 if (crtc->fb == NULL)
2864 wait_event(dev_priv->pending_flip_queue,
2865 !intel_crtc_has_pending_flip(crtc));
2867 mutex_lock(&dev->struct_mutex);
2868 intel_finish_fb(crtc->fb);
2869 mutex_unlock(&dev->struct_mutex);
2872 static bool intel_crtc_driving_pch(struct drm_crtc *crtc)
2874 struct drm_device *dev = crtc->dev;
2875 struct drm_mode_config *mode_config = &dev->mode_config;
2876 struct intel_encoder *encoder;
2879 * If there's a non-PCH eDP on this crtc, it must be DP_A, and that
2880 * must be driven by its own crtc; no sharing is possible.
2882 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
2883 if (encoder->base.crtc != crtc)
2886 switch (encoder->type) {
2887 case INTEL_OUTPUT_EDP:
2888 if (!intel_encoder_is_pch_edp(&encoder->base))
2898 * Enable PCH resources required for PCH ports:
2900 * - FDI training & RX/TX
2901 * - update transcoder timings
2902 * - DP transcoding bits
2905 static void ironlake_pch_enable(struct drm_crtc *crtc)
2907 struct drm_device *dev = crtc->dev;
2908 struct drm_i915_private *dev_priv = dev->dev_private;
2909 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2910 int pipe = intel_crtc->pipe;
2911 u32 reg, temp, transc_sel;
2913 /* For PCH output, training FDI link */
2914 dev_priv->display.fdi_link_train(crtc);
2916 intel_enable_pch_pll(dev_priv, pipe);
2918 if (HAS_PCH_CPT(dev)) {
2919 transc_sel = intel_crtc->use_pll_a ? TRANSC_DPLLA_SEL :
2922 /* Be sure PCH DPLL SEL is set */
2923 temp = I915_READ(PCH_DPLL_SEL);
2925 temp &= ~(TRANSA_DPLLB_SEL);
2926 temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
2927 } else if (pipe == 1) {
2928 temp &= ~(TRANSB_DPLLB_SEL);
2929 temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
2930 } else if (pipe == 2) {
2931 temp &= ~(TRANSC_DPLLB_SEL);
2932 temp |= (TRANSC_DPLL_ENABLE | transc_sel);
2934 I915_WRITE(PCH_DPLL_SEL, temp);
2937 /* set transcoder timing, panel must allow it */
2938 assert_panel_unlocked(dev_priv, pipe);
2939 I915_WRITE(TRANS_HTOTAL(pipe), I915_READ(HTOTAL(pipe)));
2940 I915_WRITE(TRANS_HBLANK(pipe), I915_READ(HBLANK(pipe)));
2941 I915_WRITE(TRANS_HSYNC(pipe), I915_READ(HSYNC(pipe)));
2943 I915_WRITE(TRANS_VTOTAL(pipe), I915_READ(VTOTAL(pipe)));
2944 I915_WRITE(TRANS_VBLANK(pipe), I915_READ(VBLANK(pipe)));
2945 I915_WRITE(TRANS_VSYNC(pipe), I915_READ(VSYNC(pipe)));
2947 intel_fdi_normal_train(crtc);
2949 /* For PCH DP, enable TRANS_DP_CTL */
2950 if (HAS_PCH_CPT(dev) &&
2951 (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
2952 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
2953 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) >> 5;
2954 reg = TRANS_DP_CTL(pipe);
2955 temp = I915_READ(reg);
2956 temp &= ~(TRANS_DP_PORT_SEL_MASK |
2957 TRANS_DP_SYNC_MASK |
2959 temp |= (TRANS_DP_OUTPUT_ENABLE |
2960 TRANS_DP_ENH_FRAMING);
2961 temp |= bpc << 9; /* same format but at 11:9 */
2963 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
2964 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
2965 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
2966 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
2968 switch (intel_trans_dp_port_sel(crtc)) {
2970 temp |= TRANS_DP_PORT_SEL_B;
2973 temp |= TRANS_DP_PORT_SEL_C;
2976 temp |= TRANS_DP_PORT_SEL_D;
2979 DRM_DEBUG_KMS("Wrong PCH DP port return. Guess port B\n");
2980 temp |= TRANS_DP_PORT_SEL_B;
2984 I915_WRITE(reg, temp);
2987 intel_enable_transcoder(dev_priv, pipe);
2990 void intel_cpt_verify_modeset(struct drm_device *dev, int pipe)
2992 struct drm_i915_private *dev_priv = dev->dev_private;
2993 int dslreg = PIPEDSL(pipe), tc2reg = TRANS_CHICKEN2(pipe);
2996 temp = I915_READ(dslreg);
2998 if (wait_for(I915_READ(dslreg) != temp, 5)) {
2999 /* Without this, mode sets may fail silently on FDI */
3000 I915_WRITE(tc2reg, TRANS_AUTOTRAIN_GEN_STALL_DIS);
3002 I915_WRITE(tc2reg, 0);
3003 if (wait_for(I915_READ(dslreg) != temp, 5))
3004 DRM_ERROR("mode set failed: pipe %d stuck\n", pipe);
3008 static void ironlake_crtc_enable(struct drm_crtc *crtc)
3010 struct drm_device *dev = crtc->dev;
3011 struct drm_i915_private *dev_priv = dev->dev_private;
3012 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3013 int pipe = intel_crtc->pipe;
3014 int plane = intel_crtc->plane;
3018 if (intel_crtc->active)
3021 intel_crtc->active = true;
3022 intel_update_watermarks(dev);
3024 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
3025 temp = I915_READ(PCH_LVDS);
3026 if ((temp & LVDS_PORT_EN) == 0)
3027 I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
3030 is_pch_port = intel_crtc_driving_pch(crtc);
3033 ironlake_fdi_pll_enable(crtc);
3035 ironlake_fdi_disable(crtc);
3037 /* Enable panel fitting for LVDS */
3038 if (dev_priv->pch_pf_size &&
3039 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) || HAS_eDP)) {
3040 /* Force use of hard-coded filter coefficients
3041 * as some pre-programmed values are broken,
3044 if (IS_IVYBRIDGE(dev))
3045 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
3046 PF_PIPE_SEL_IVB(pipe));
3048 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
3049 I915_WRITE(PF_WIN_POS(pipe), dev_priv->pch_pf_pos);
3050 I915_WRITE(PF_WIN_SZ(pipe), dev_priv->pch_pf_size);
3054 * On ILK+ LUT must be loaded before the pipe is running but with
3057 intel_crtc_load_lut(crtc);
3059 intel_enable_pipe(dev_priv, pipe, is_pch_port);
3060 intel_enable_plane(dev_priv, plane, pipe);
3063 ironlake_pch_enable(crtc);
3065 mutex_lock(&dev->struct_mutex);
3066 intel_update_fbc(dev);
3067 mutex_unlock(&dev->struct_mutex);
3069 intel_crtc_update_cursor(crtc, true);
3072 static void ironlake_crtc_disable(struct drm_crtc *crtc)
3074 struct drm_device *dev = crtc->dev;
3075 struct drm_i915_private *dev_priv = dev->dev_private;
3076 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3077 int pipe = intel_crtc->pipe;
3078 int plane = intel_crtc->plane;
3081 if (!intel_crtc->active)
3084 intel_crtc_wait_for_pending_flips(crtc);
3085 drm_vblank_off(dev, pipe);
3086 intel_crtc_update_cursor(crtc, false);
3088 intel_disable_plane(dev_priv, plane, pipe);
3090 if (dev_priv->cfb_plane == plane)
3091 intel_disable_fbc(dev);
3093 intel_disable_pipe(dev_priv, pipe);
3096 I915_WRITE(PF_CTL(pipe), 0);
3097 I915_WRITE(PF_WIN_SZ(pipe), 0);
3099 ironlake_fdi_disable(crtc);
3101 /* This is a horrible layering violation; we should be doing this in
3102 * the connector/encoder ->prepare instead, but we don't always have
3103 * enough information there about the config to know whether it will
3104 * actually be necessary or just cause undesired flicker.
3106 intel_disable_pch_ports(dev_priv, pipe);
3108 intel_disable_transcoder(dev_priv, pipe);
3110 if (HAS_PCH_CPT(dev)) {
3111 /* disable TRANS_DP_CTL */
3112 reg = TRANS_DP_CTL(pipe);
3113 temp = I915_READ(reg);
3114 temp &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);
3115 temp |= TRANS_DP_PORT_SEL_NONE;
3116 I915_WRITE(reg, temp);
3118 /* disable DPLL_SEL */
3119 temp = I915_READ(PCH_DPLL_SEL);
3122 temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL);
3125 temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
3128 /* C shares PLL A or B */
3129 temp &= ~(TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL);
3134 I915_WRITE(PCH_DPLL_SEL, temp);
3137 /* disable PCH DPLL */
3138 if (!intel_crtc->no_pll)
3139 intel_disable_pch_pll(dev_priv, pipe);
3141 /* Switch from PCDclk to Rawclk */
3142 reg = FDI_RX_CTL(pipe);
3143 temp = I915_READ(reg);
3144 I915_WRITE(reg, temp & ~FDI_PCDCLK);
3146 /* Disable CPU FDI TX PLL */
3147 reg = FDI_TX_CTL(pipe);
3148 temp = I915_READ(reg);
3149 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
3154 reg = FDI_RX_CTL(pipe);
3155 temp = I915_READ(reg);
3156 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
3158 /* Wait for the clocks to turn off. */
3162 intel_crtc->active = false;
3163 intel_update_watermarks(dev);
3165 mutex_lock(&dev->struct_mutex);
3166 intel_update_fbc(dev);
3167 intel_clear_scanline_wait(dev);
3168 mutex_unlock(&dev->struct_mutex);
3171 static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
3173 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3174 int pipe = intel_crtc->pipe;
3175 int plane = intel_crtc->plane;
3177 /* XXX: When our outputs are all unaware of DPMS modes other than off
3178 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
3181 case DRM_MODE_DPMS_ON:
3182 case DRM_MODE_DPMS_STANDBY:
3183 case DRM_MODE_DPMS_SUSPEND:
3184 DRM_DEBUG_KMS("crtc %d/%d dpms on\n", pipe, plane);
3185 ironlake_crtc_enable(crtc);
3188 case DRM_MODE_DPMS_OFF:
3189 DRM_DEBUG_KMS("crtc %d/%d dpms off\n", pipe, plane);
3190 ironlake_crtc_disable(crtc);
3195 static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
3197 if (!enable && intel_crtc->overlay) {
3198 struct drm_device *dev = intel_crtc->base.dev;
3199 struct drm_i915_private *dev_priv = dev->dev_private;
3201 mutex_lock(&dev->struct_mutex);
3202 dev_priv->mm.interruptible = false;
3203 (void) intel_overlay_switch_off(intel_crtc->overlay);
3204 dev_priv->mm.interruptible = true;
3205 mutex_unlock(&dev->struct_mutex);
3208 /* Let userspace switch the overlay on again. In most cases userspace
3209 * has to recompute where to put it anyway.
3213 static void i9xx_crtc_enable(struct drm_crtc *crtc)
3215 struct drm_device *dev = crtc->dev;
3216 struct drm_i915_private *dev_priv = dev->dev_private;
3217 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3218 int pipe = intel_crtc->pipe;
3219 int plane = intel_crtc->plane;
3221 if (intel_crtc->active)
3224 intel_crtc->active = true;
3225 intel_update_watermarks(dev);
3227 intel_enable_pll(dev_priv, pipe);
3228 intel_enable_pipe(dev_priv, pipe, false);
3229 intel_enable_plane(dev_priv, plane, pipe);
3231 intel_crtc_load_lut(crtc);
3232 intel_update_fbc(dev);
3234 /* Give the overlay scaler a chance to enable if it's on this pipe */
3235 intel_crtc_dpms_overlay(intel_crtc, true);
3236 intel_crtc_update_cursor(crtc, true);
3239 static void i9xx_crtc_disable(struct drm_crtc *crtc)
3241 struct drm_device *dev = crtc->dev;
3242 struct drm_i915_private *dev_priv = dev->dev_private;
3243 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3244 int pipe = intel_crtc->pipe;
3245 int plane = intel_crtc->plane;
3248 if (!intel_crtc->active)
3251 /* Give the overlay scaler a chance to disable if it's on this pipe */
3252 intel_crtc_wait_for_pending_flips(crtc);
3253 drm_vblank_off(dev, pipe);
3254 intel_crtc_dpms_overlay(intel_crtc, false);
3255 intel_crtc_update_cursor(crtc, false);
3257 if (dev_priv->cfb_plane == plane)
3258 intel_disable_fbc(dev);
3260 intel_disable_plane(dev_priv, plane, pipe);
3261 intel_disable_pipe(dev_priv, pipe);
3263 /* Disable pannel fitter if it is on this pipe. */
3264 pctl = I915_READ(PFIT_CONTROL);
3265 if ((pctl & PFIT_ENABLE) &&
3266 ((pctl & PFIT_PIPE_MASK) >> PFIT_PIPE_SHIFT) == pipe)
3267 I915_WRITE(PFIT_CONTROL, 0);
3269 intel_disable_pll(dev_priv, pipe);
3271 intel_crtc->active = false;
3272 intel_update_fbc(dev);
3273 intel_update_watermarks(dev);
3274 intel_clear_scanline_wait(dev);
3277 static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
3279 /* XXX: When our outputs are all unaware of DPMS modes other than off
3280 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
3283 case DRM_MODE_DPMS_ON:
3284 case DRM_MODE_DPMS_STANDBY:
3285 case DRM_MODE_DPMS_SUSPEND:
3286 i9xx_crtc_enable(crtc);
3288 case DRM_MODE_DPMS_OFF:
3289 i9xx_crtc_disable(crtc);
3295 * Sets the power management mode of the pipe and plane.
3297 static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
3299 struct drm_device *dev = crtc->dev;
3300 struct drm_i915_private *dev_priv = dev->dev_private;
3301 struct drm_i915_master_private *master_priv;
3302 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3303 int pipe = intel_crtc->pipe;
3306 if (intel_crtc->dpms_mode == mode)
3309 intel_crtc->dpms_mode = mode;
3311 dev_priv->display.dpms(crtc, mode);
3313 if (!dev->primary->master)
3316 master_priv = dev->primary->master->driver_priv;
3317 if (!master_priv->sarea_priv)
3320 enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
3324 master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
3325 master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
3328 master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
3329 master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
3332 DRM_ERROR("Can't update pipe %c in SAREA\n", pipe_name(pipe));
3337 static void intel_crtc_disable(struct drm_crtc *crtc)
3339 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
3340 struct drm_device *dev = crtc->dev;
3342 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
3345 mutex_lock(&dev->struct_mutex);
3346 i915_gem_object_unpin(to_intel_framebuffer(crtc->fb)->obj);
3347 mutex_unlock(&dev->struct_mutex);
3351 /* Prepare for a mode set.
3353 * Note we could be a lot smarter here. We need to figure out which outputs
3354 * will be enabled, which disabled (in short, how the config will changes)
3355 * and perform the minimum necessary steps to accomplish that, e.g. updating
3356 * watermarks, FBC configuration, making sure PLLs are programmed correctly,
3357 * panel fitting is in the proper state, etc.
3359 static void i9xx_crtc_prepare(struct drm_crtc *crtc)
3361 i9xx_crtc_disable(crtc);
3364 static void i9xx_crtc_commit(struct drm_crtc *crtc)
3366 i9xx_crtc_enable(crtc);
3369 static void ironlake_crtc_prepare(struct drm_crtc *crtc)
3371 ironlake_crtc_disable(crtc);
3374 static void ironlake_crtc_commit(struct drm_crtc *crtc)
3376 ironlake_crtc_enable(crtc);
3379 void intel_encoder_prepare(struct drm_encoder *encoder)
3381 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3382 /* lvds has its own version of prepare see intel_lvds_prepare */
3383 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
3386 void intel_encoder_commit(struct drm_encoder *encoder)
3388 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3389 struct drm_device *dev = encoder->dev;
3390 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3391 struct intel_crtc *intel_crtc = to_intel_crtc(intel_encoder->base.crtc);
3393 /* lvds has its own version of commit see intel_lvds_commit */
3394 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
3396 if (HAS_PCH_CPT(dev))
3397 intel_cpt_verify_modeset(dev, intel_crtc->pipe);
3400 void intel_encoder_destroy(struct drm_encoder *encoder)
3402 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3404 drm_encoder_cleanup(encoder);
3405 kfree(intel_encoder);
3408 static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
3409 struct drm_display_mode *mode,
3410 struct drm_display_mode *adjusted_mode)
3412 struct drm_device *dev = crtc->dev;
3414 if (HAS_PCH_SPLIT(dev)) {
3415 /* FDI link clock is fixed at 2.7G */
3416 if (mode->clock * 3 > IRONLAKE_FDI_FREQ * 4)
3420 /* XXX some encoders set the crtcinfo, others don't.
3421 * Obviously we need some form of conflict resolution here...
3423 if (adjusted_mode->crtc_htotal == 0)
3424 drm_mode_set_crtcinfo(adjusted_mode, 0);
3429 static int i945_get_display_clock_speed(struct drm_device *dev)
3434 static int i915_get_display_clock_speed(struct drm_device *dev)
3439 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
3444 static int i915gm_get_display_clock_speed(struct drm_device *dev)
3448 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3450 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
3453 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
3454 case GC_DISPLAY_CLOCK_333_MHZ:
3457 case GC_DISPLAY_CLOCK_190_200_MHZ:
3463 static int i865_get_display_clock_speed(struct drm_device *dev)
3468 static int i855_get_display_clock_speed(struct drm_device *dev)
3471 /* Assume that the hardware is in the high speed state. This
3472 * should be the default.
3474 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
3475 case GC_CLOCK_133_200:
3476 case GC_CLOCK_100_200:
3478 case GC_CLOCK_166_250:
3480 case GC_CLOCK_100_133:
3484 /* Shouldn't happen */
3488 static int i830_get_display_clock_speed(struct drm_device *dev)
3502 fdi_reduce_ratio(u32 *num, u32 *den)
3504 while (*num > 0xffffff || *den > 0xffffff) {
3511 ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
3512 int link_clock, struct fdi_m_n *m_n)
3514 m_n->tu = 64; /* default size */
3516 /* BUG_ON(pixel_clock > INT_MAX / 36); */
3517 m_n->gmch_m = bits_per_pixel * pixel_clock;
3518 m_n->gmch_n = link_clock * nlanes * 8;
3519 fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
3521 m_n->link_m = pixel_clock;
3522 m_n->link_n = link_clock;
3523 fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
3527 struct intel_watermark_params {
3528 unsigned long fifo_size;
3529 unsigned long max_wm;
3530 unsigned long default_wm;
3531 unsigned long guard_size;
3532 unsigned long cacheline_size;
3535 /* Pineview has different values for various configs */
3536 static const struct intel_watermark_params pineview_display_wm = {
3537 PINEVIEW_DISPLAY_FIFO,
3541 PINEVIEW_FIFO_LINE_SIZE
3543 static const struct intel_watermark_params pineview_display_hplloff_wm = {
3544 PINEVIEW_DISPLAY_FIFO,
3546 PINEVIEW_DFT_HPLLOFF_WM,
3548 PINEVIEW_FIFO_LINE_SIZE
3550 static const struct intel_watermark_params pineview_cursor_wm = {
3551 PINEVIEW_CURSOR_FIFO,
3552 PINEVIEW_CURSOR_MAX_WM,
3553 PINEVIEW_CURSOR_DFT_WM,
3554 PINEVIEW_CURSOR_GUARD_WM,
3555 PINEVIEW_FIFO_LINE_SIZE,
3557 static const struct intel_watermark_params pineview_cursor_hplloff_wm = {
3558 PINEVIEW_CURSOR_FIFO,
3559 PINEVIEW_CURSOR_MAX_WM,
3560 PINEVIEW_CURSOR_DFT_WM,
3561 PINEVIEW_CURSOR_GUARD_WM,
3562 PINEVIEW_FIFO_LINE_SIZE
3564 static const struct intel_watermark_params g4x_wm_info = {
3571 static const struct intel_watermark_params g4x_cursor_wm_info = {
3578 static const struct intel_watermark_params i965_cursor_wm_info = {
3583 I915_FIFO_LINE_SIZE,
3585 static const struct intel_watermark_params i945_wm_info = {
3592 static const struct intel_watermark_params i915_wm_info = {
3599 static const struct intel_watermark_params i855_wm_info = {
3606 static const struct intel_watermark_params i830_wm_info = {
3614 static const struct intel_watermark_params ironlake_display_wm_info = {
3621 static const struct intel_watermark_params ironlake_cursor_wm_info = {
3628 static const struct intel_watermark_params ironlake_display_srwm_info = {
3629 ILK_DISPLAY_SR_FIFO,
3630 ILK_DISPLAY_MAX_SRWM,
3631 ILK_DISPLAY_DFT_SRWM,
3635 static const struct intel_watermark_params ironlake_cursor_srwm_info = {
3637 ILK_CURSOR_MAX_SRWM,
3638 ILK_CURSOR_DFT_SRWM,
3643 static const struct intel_watermark_params sandybridge_display_wm_info = {
3650 static const struct intel_watermark_params sandybridge_cursor_wm_info = {
3657 static const struct intel_watermark_params sandybridge_display_srwm_info = {
3658 SNB_DISPLAY_SR_FIFO,
3659 SNB_DISPLAY_MAX_SRWM,
3660 SNB_DISPLAY_DFT_SRWM,
3664 static const struct intel_watermark_params sandybridge_cursor_srwm_info = {
3666 SNB_CURSOR_MAX_SRWM,
3667 SNB_CURSOR_DFT_SRWM,
3674 * intel_calculate_wm - calculate watermark level
3675 * @clock_in_khz: pixel clock
3676 * @wm: chip FIFO params
3677 * @pixel_size: display pixel size
3678 * @latency_ns: memory latency for the platform
3680 * Calculate the watermark level (the level at which the display plane will
3681 * start fetching from memory again). Each chip has a different display
3682 * FIFO size and allocation, so the caller needs to figure that out and pass
3683 * in the correct intel_watermark_params structure.
3685 * As the pixel clock runs, the FIFO will be drained at a rate that depends
3686 * on the pixel size. When it reaches the watermark level, it'll start
3687 * fetching FIFO line sized based chunks from memory until the FIFO fills
3688 * past the watermark point. If the FIFO drains completely, a FIFO underrun
3689 * will occur, and a display engine hang could result.
3691 static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
3692 const struct intel_watermark_params *wm,
3695 unsigned long latency_ns)
3697 long entries_required, wm_size;
3700 * Note: we need to make sure we don't overflow for various clock &
3702 * clocks go from a few thousand to several hundred thousand.
3703 * latency is usually a few thousand
3705 entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
3707 entries_required = DIV_ROUND_UP(entries_required, wm->cacheline_size);
3709 DRM_DEBUG_KMS("FIFO entries required for mode: %ld\n", entries_required);
3711 wm_size = fifo_size - (entries_required + wm->guard_size);
3713 DRM_DEBUG_KMS("FIFO watermark level: %ld\n", wm_size);
3715 /* Don't promote wm_size to unsigned... */
3716 if (wm_size > (long)wm->max_wm)
3717 wm_size = wm->max_wm;
3719 wm_size = wm->default_wm;
3723 struct cxsr_latency {
3726 unsigned long fsb_freq;
3727 unsigned long mem_freq;
3728 unsigned long display_sr;
3729 unsigned long display_hpll_disable;
3730 unsigned long cursor_sr;
3731 unsigned long cursor_hpll_disable;
3734 static const struct cxsr_latency cxsr_latency_table[] = {
3735 {1, 0, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
3736 {1, 0, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
3737 {1, 0, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
3738 {1, 1, 800, 667, 6420, 36420, 6873, 36873}, /* DDR3-667 SC */
3739 {1, 1, 800, 800, 5902, 35902, 6318, 36318}, /* DDR3-800 SC */
3741 {1, 0, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
3742 {1, 0, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
3743 {1, 0, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
3744 {1, 1, 667, 667, 6438, 36438, 6911, 36911}, /* DDR3-667 SC */
3745 {1, 1, 667, 800, 5941, 35941, 6377, 36377}, /* DDR3-800 SC */
3747 {1, 0, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
3748 {1, 0, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
3749 {1, 0, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
3750 {1, 1, 400, 667, 6509, 36509, 7062, 37062}, /* DDR3-667 SC */
3751 {1, 1, 400, 800, 5985, 35985, 6501, 36501}, /* DDR3-800 SC */
3753 {0, 0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
3754 {0, 0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
3755 {0, 0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
3756 {0, 1, 800, 667, 6476, 36476, 6955, 36955}, /* DDR3-667 SC */
3757 {0, 1, 800, 800, 5958, 35958, 6400, 36400}, /* DDR3-800 SC */
3759 {0, 0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
3760 {0, 0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
3761 {0, 0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
3762 {0, 1, 667, 667, 6494, 36494, 6993, 36993}, /* DDR3-667 SC */
3763 {0, 1, 667, 800, 5998, 35998, 6460, 36460}, /* DDR3-800 SC */
3765 {0, 0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
3766 {0, 0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
3767 {0, 0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
3768 {0, 1, 400, 667, 6566, 36566, 7145, 37145}, /* DDR3-667 SC */
3769 {0, 1, 400, 800, 6042, 36042, 6584, 36584}, /* DDR3-800 SC */
3772 static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop,
3777 const struct cxsr_latency *latency;
3780 if (fsb == 0 || mem == 0)
3783 for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
3784 latency = &cxsr_latency_table[i];
3785 if (is_desktop == latency->is_desktop &&
3786 is_ddr3 == latency->is_ddr3 &&
3787 fsb == latency->fsb_freq && mem == latency->mem_freq)
3791 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
3796 static void pineview_disable_cxsr(struct drm_device *dev)
3798 struct drm_i915_private *dev_priv = dev->dev_private;
3800 /* deactivate cxsr */
3801 I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN);
3805 * Latency for FIFO fetches is dependent on several factors:
3806 * - memory configuration (speed, channels)
3808 * - current MCH state
3809 * It can be fairly high in some situations, so here we assume a fairly
3810 * pessimal value. It's a tradeoff between extra memory fetches (if we
3811 * set this value too high, the FIFO will fetch frequently to stay full)
3812 * and power consumption (set it too low to save power and we might see
3813 * FIFO underruns and display "flicker").
3815 * A value of 5us seems to be a good balance; safe for very low end
3816 * platforms but not overly aggressive on lower latency configs.
3818 static const int latency_ns = 5000;
3820 static int i9xx_get_fifo_size(struct drm_device *dev, int plane)
3822 struct drm_i915_private *dev_priv = dev->dev_private;
3823 uint32_t dsparb = I915_READ(DSPARB);
3826 size = dsparb & 0x7f;
3828 size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - size;
3830 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3831 plane ? "B" : "A", size);
3836 static int i85x_get_fifo_size(struct drm_device *dev, int plane)
3838 struct drm_i915_private *dev_priv = dev->dev_private;
3839 uint32_t dsparb = I915_READ(DSPARB);
3842 size = dsparb & 0x1ff;
3844 size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - size;
3845 size >>= 1; /* Convert to cachelines */
3847 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3848 plane ? "B" : "A", size);
3853 static int i845_get_fifo_size(struct drm_device *dev, int plane)
3855 struct drm_i915_private *dev_priv = dev->dev_private;
3856 uint32_t dsparb = I915_READ(DSPARB);
3859 size = dsparb & 0x7f;
3860 size >>= 2; /* Convert to cachelines */
3862 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3869 static int i830_get_fifo_size(struct drm_device *dev, int plane)
3871 struct drm_i915_private *dev_priv = dev->dev_private;
3872 uint32_t dsparb = I915_READ(DSPARB);
3875 size = dsparb & 0x7f;
3876 size >>= 1; /* Convert to cachelines */
3878 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
3879 plane ? "B" : "A", size);
3884 static struct drm_crtc *single_enabled_crtc(struct drm_device *dev)
3886 struct drm_crtc *crtc, *enabled = NULL;
3888 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
3889 if (crtc->enabled && crtc->fb) {
3899 static void pineview_update_wm(struct drm_device *dev)
3901 struct drm_i915_private *dev_priv = dev->dev_private;
3902 struct drm_crtc *crtc;
3903 const struct cxsr_latency *latency;
3907 latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->is_ddr3,
3908 dev_priv->fsb_freq, dev_priv->mem_freq);
3910 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
3911 pineview_disable_cxsr(dev);
3915 crtc = single_enabled_crtc(dev);
3917 int clock = crtc->mode.clock;
3918 int pixel_size = crtc->fb->bits_per_pixel / 8;
3921 wm = intel_calculate_wm(clock, &pineview_display_wm,
3922 pineview_display_wm.fifo_size,
3923 pixel_size, latency->display_sr);
3924 reg = I915_READ(DSPFW1);
3925 reg &= ~DSPFW_SR_MASK;
3926 reg |= wm << DSPFW_SR_SHIFT;
3927 I915_WRITE(DSPFW1, reg);
3928 DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
3931 wm = intel_calculate_wm(clock, &pineview_cursor_wm,
3932 pineview_display_wm.fifo_size,
3933 pixel_size, latency->cursor_sr);
3934 reg = I915_READ(DSPFW3);
3935 reg &= ~DSPFW_CURSOR_SR_MASK;
3936 reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT;
3937 I915_WRITE(DSPFW3, reg);
3939 /* Display HPLL off SR */
3940 wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm,
3941 pineview_display_hplloff_wm.fifo_size,
3942 pixel_size, latency->display_hpll_disable);
3943 reg = I915_READ(DSPFW3);
3944 reg &= ~DSPFW_HPLL_SR_MASK;
3945 reg |= wm & DSPFW_HPLL_SR_MASK;
3946 I915_WRITE(DSPFW3, reg);
3948 /* cursor HPLL off SR */
3949 wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm,
3950 pineview_display_hplloff_wm.fifo_size,
3951 pixel_size, latency->cursor_hpll_disable);
3952 reg = I915_READ(DSPFW3);
3953 reg &= ~DSPFW_HPLL_CURSOR_MASK;
3954 reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT;
3955 I915_WRITE(DSPFW3, reg);
3956 DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
3960 I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN);
3961 DRM_DEBUG_KMS("Self-refresh is enabled\n");
3963 pineview_disable_cxsr(dev);
3964 DRM_DEBUG_KMS("Self-refresh is disabled\n");
3968 static bool g4x_compute_wm0(struct drm_device *dev,
3970 const struct intel_watermark_params *display,
3971 int display_latency_ns,
3972 const struct intel_watermark_params *cursor,
3973 int cursor_latency_ns,
3977 struct drm_crtc *crtc;
3978 int htotal, hdisplay, clock, pixel_size;
3979 int line_time_us, line_count;
3980 int entries, tlb_miss;
3982 crtc = intel_get_crtc_for_plane(dev, plane);
3983 if (crtc->fb == NULL || !crtc->enabled) {
3984 *cursor_wm = cursor->guard_size;
3985 *plane_wm = display->guard_size;
3989 htotal = crtc->mode.htotal;
3990 hdisplay = crtc->mode.hdisplay;
3991 clock = crtc->mode.clock;
3992 pixel_size = crtc->fb->bits_per_pixel / 8;
3994 /* Use the small buffer method to calculate plane watermark */
3995 entries = ((clock * pixel_size / 1000) * display_latency_ns) / 1000;
3996 tlb_miss = display->fifo_size*display->cacheline_size - hdisplay * 8;
3998 entries += tlb_miss;
3999 entries = DIV_ROUND_UP(entries, display->cacheline_size);
4000 *plane_wm = entries + display->guard_size;
4001 if (*plane_wm > (int)display->max_wm)
4002 *plane_wm = display->max_wm;
4004 /* Use the large buffer method to calculate cursor watermark */
4005 line_time_us = ((htotal * 1000) / clock);
4006 line_count = (cursor_latency_ns / line_time_us + 1000) / 1000;
4007 entries = line_count * 64 * pixel_size;
4008 tlb_miss = cursor->fifo_size*cursor->cacheline_size - hdisplay * 8;
4010 entries += tlb_miss;
4011 entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
4012 *cursor_wm = entries + cursor->guard_size;
4013 if (*cursor_wm > (int)cursor->max_wm)
4014 *cursor_wm = (int)cursor->max_wm;
4020 * Check the wm result.
4022 * If any calculated watermark values is larger than the maximum value that
4023 * can be programmed into the associated watermark register, that watermark
4026 static bool g4x_check_srwm(struct drm_device *dev,
4027 int display_wm, int cursor_wm,
4028 const struct intel_watermark_params *display,
4029 const struct intel_watermark_params *cursor)
4031 DRM_DEBUG_KMS("SR watermark: display plane %d, cursor %d\n",
4032 display_wm, cursor_wm);
4034 if (display_wm > display->max_wm) {
4035 DRM_DEBUG_KMS("display watermark is too large(%d/%ld), disabling\n",
4036 display_wm, display->max_wm);
4040 if (cursor_wm > cursor->max_wm) {
4041 DRM_DEBUG_KMS("cursor watermark is too large(%d/%ld), disabling\n",
4042 cursor_wm, cursor->max_wm);
4046 if (!(display_wm || cursor_wm)) {
4047 DRM_DEBUG_KMS("SR latency is 0, disabling\n");
4054 static bool g4x_compute_srwm(struct drm_device *dev,
4057 const struct intel_watermark_params *display,
4058 const struct intel_watermark_params *cursor,
4059 int *display_wm, int *cursor_wm)
4061 struct drm_crtc *crtc;
4062 int hdisplay, htotal, pixel_size, clock;
4063 unsigned long line_time_us;
4064 int line_count, line_size;
4069 *display_wm = *cursor_wm = 0;
4073 crtc = intel_get_crtc_for_plane(dev, plane);
4074 hdisplay = crtc->mode.hdisplay;
4075 htotal = crtc->mode.htotal;
4076 clock = crtc->mode.clock;
4077 pixel_size = crtc->fb->bits_per_pixel / 8;
4079 line_time_us = (htotal * 1000) / clock;
4080 line_count = (latency_ns / line_time_us + 1000) / 1000;
4081 line_size = hdisplay * pixel_size;
4083 /* Use the minimum of the small and large buffer method for primary */
4084 small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
4085 large = line_count * line_size;
4087 entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
4088 *display_wm = entries + display->guard_size;
4090 /* calculate the self-refresh watermark for display cursor */
4091 entries = line_count * pixel_size * 64;
4092 entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
4093 *cursor_wm = entries + cursor->guard_size;
4095 return g4x_check_srwm(dev,
4096 *display_wm, *cursor_wm,
4100 #define single_plane_enabled(mask) is_power_of_2(mask)
4102 static void g4x_update_wm(struct drm_device *dev)
4104 static const int sr_latency_ns = 12000;
4105 struct drm_i915_private *dev_priv = dev->dev_private;
4106 int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
4107 int plane_sr, cursor_sr;
4108 unsigned int enabled = 0;
4110 if (g4x_compute_wm0(dev, 0,
4111 &g4x_wm_info, latency_ns,
4112 &g4x_cursor_wm_info, latency_ns,
4113 &planea_wm, &cursora_wm))
4116 if (g4x_compute_wm0(dev, 1,
4117 &g4x_wm_info, latency_ns,
4118 &g4x_cursor_wm_info, latency_ns,
4119 &planeb_wm, &cursorb_wm))
4122 plane_sr = cursor_sr = 0;
4123 if (single_plane_enabled(enabled) &&
4124 g4x_compute_srwm(dev, ffs(enabled) - 1,
4127 &g4x_cursor_wm_info,
4128 &plane_sr, &cursor_sr))
4129 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
4131 I915_WRITE(FW_BLC_SELF,
4132 I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN);
4134 DRM_DEBUG_KMS("Setting FIFO watermarks - A: plane=%d, cursor=%d, B: plane=%d, cursor=%d, SR: plane=%d, cursor=%d\n",
4135 planea_wm, cursora_wm,
4136 planeb_wm, cursorb_wm,
4137 plane_sr, cursor_sr);
4140 (plane_sr << DSPFW_SR_SHIFT) |
4141 (cursorb_wm << DSPFW_CURSORB_SHIFT) |
4142 (planeb_wm << DSPFW_PLANEB_SHIFT) |
4145 (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
4146 (cursora_wm << DSPFW_CURSORA_SHIFT));
4147 /* HPLL off in SR has some issues on G4x... disable it */
4149 (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
4150 (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
4153 static void i965_update_wm(struct drm_device *dev)
4155 struct drm_i915_private *dev_priv = dev->dev_private;
4156 struct drm_crtc *crtc;
4160 /* Calc sr entries for one plane configs */
4161 crtc = single_enabled_crtc(dev);
4163 /* self-refresh has much higher latency */
4164 static const int sr_latency_ns = 12000;
4165 int clock = crtc->mode.clock;
4166 int htotal = crtc->mode.htotal;
4167 int hdisplay = crtc->mode.hdisplay;
4168 int pixel_size = crtc->fb->bits_per_pixel / 8;
4169 unsigned long line_time_us;
4172 line_time_us = ((htotal * 1000) / clock);
4174 /* Use ns/us then divide to preserve precision */
4175 entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
4176 pixel_size * hdisplay;
4177 entries = DIV_ROUND_UP(entries, I915_FIFO_LINE_SIZE);
4178 srwm = I965_FIFO_SIZE - entries;
4182 DRM_DEBUG_KMS("self-refresh entries: %d, wm: %d\n",
4185 entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
4187 entries = DIV_ROUND_UP(entries,
4188 i965_cursor_wm_info.cacheline_size);
4189 cursor_sr = i965_cursor_wm_info.fifo_size -
4190 (entries + i965_cursor_wm_info.guard_size);
4192 if (cursor_sr > i965_cursor_wm_info.max_wm)
4193 cursor_sr = i965_cursor_wm_info.max_wm;
4195 DRM_DEBUG_KMS("self-refresh watermark: display plane %d "
4196 "cursor %d\n", srwm, cursor_sr);
4198 if (IS_CRESTLINE(dev))
4199 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
4201 /* Turn off self refresh if both pipes are enabled */
4202 if (IS_CRESTLINE(dev))
4203 I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
4207 DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
4210 /* 965 has limitations... */
4211 I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) |
4212 (8 << 16) | (8 << 8) | (8 << 0));
4213 I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
4214 /* update cursor SR watermark */
4215 I915_WRITE(DSPFW3, (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
4218 static void i9xx_update_wm(struct drm_device *dev)
4220 struct drm_i915_private *dev_priv = dev->dev_private;
4221 const struct intel_watermark_params *wm_info;
4226 int planea_wm, planeb_wm;
4227 struct drm_crtc *crtc, *enabled = NULL;
4230 wm_info = &i945_wm_info;
4231 else if (!IS_GEN2(dev))
4232 wm_info = &i915_wm_info;
4234 wm_info = &i855_wm_info;
4236 fifo_size = dev_priv->display.get_fifo_size(dev, 0);
4237 crtc = intel_get_crtc_for_plane(dev, 0);
4238 if (crtc->enabled && crtc->fb) {
4239 planea_wm = intel_calculate_wm(crtc->mode.clock,
4241 crtc->fb->bits_per_pixel / 8,
4245 planea_wm = fifo_size - wm_info->guard_size;
4247 fifo_size = dev_priv->display.get_fifo_size(dev, 1);
4248 crtc = intel_get_crtc_for_plane(dev, 1);
4249 if (crtc->enabled && crtc->fb) {
4250 planeb_wm = intel_calculate_wm(crtc->mode.clock,
4252 crtc->fb->bits_per_pixel / 8,
4254 if (enabled == NULL)
4259 planeb_wm = fifo_size - wm_info->guard_size;
4261 DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
4264 * Overlay gets an aggressive default since video jitter is bad.
4268 /* Play safe and disable self-refresh before adjusting watermarks. */
4269 if (IS_I945G(dev) || IS_I945GM(dev))
4270 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0);
4271 else if (IS_I915GM(dev))
4272 I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN);
4274 /* Calc sr entries for one plane configs */
4275 if (HAS_FW_BLC(dev) && enabled) {
4276 /* self-refresh has much higher latency */
4277 static const int sr_latency_ns = 6000;
4278 int clock = enabled->mode.clock;
4279 int htotal = enabled->mode.htotal;
4280 int hdisplay = enabled->mode.hdisplay;
4281 int pixel_size = enabled->fb->bits_per_pixel / 8;
4282 unsigned long line_time_us;
4285 line_time_us = (htotal * 1000) / clock;
4287 /* Use ns/us then divide to preserve precision */
4288 entries = (((sr_latency_ns / line_time_us) + 1000) / 1000) *
4289 pixel_size * hdisplay;
4290 entries = DIV_ROUND_UP(entries, wm_info->cacheline_size);
4291 DRM_DEBUG_KMS("self-refresh entries: %d\n", entries);
4292 srwm = wm_info->fifo_size - entries;
4296 if (IS_I945G(dev) || IS_I945GM(dev))
4297 I915_WRITE(FW_BLC_SELF,
4298 FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
4299 else if (IS_I915GM(dev))
4300 I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
4303 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
4304 planea_wm, planeb_wm, cwm, srwm);
4306 fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
4307 fwater_hi = (cwm & 0x1f);
4309 /* Set request length to 8 cachelines per fetch */
4310 fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
4311 fwater_hi = fwater_hi | (1 << 8);
4313 I915_WRITE(FW_BLC, fwater_lo);
4314 I915_WRITE(FW_BLC2, fwater_hi);
4316 if (HAS_FW_BLC(dev)) {
4318 if (IS_I945G(dev) || IS_I945GM(dev))
4319 I915_WRITE(FW_BLC_SELF,
4320 FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
4321 else if (IS_I915GM(dev))
4322 I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN);
4323 DRM_DEBUG_KMS("memory self refresh enabled\n");
4325 DRM_DEBUG_KMS("memory self refresh disabled\n");
4329 static void i830_update_wm(struct drm_device *dev)
4331 struct drm_i915_private *dev_priv = dev->dev_private;
4332 struct drm_crtc *crtc;
4336 crtc = single_enabled_crtc(dev);
4340 planea_wm = intel_calculate_wm(crtc->mode.clock, &i830_wm_info,
4341 dev_priv->display.get_fifo_size(dev, 0),
4342 crtc->fb->bits_per_pixel / 8,
4344 fwater_lo = I915_READ(FW_BLC) & ~0xfff;
4345 fwater_lo |= (3<<8) | planea_wm;
4347 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
4349 I915_WRITE(FW_BLC, fwater_lo);
4352 #define ILK_LP0_PLANE_LATENCY 700
4353 #define ILK_LP0_CURSOR_LATENCY 1300
4356 * Check the wm result.
4358 * If any calculated watermark values is larger than the maximum value that
4359 * can be programmed into the associated watermark register, that watermark
4362 static bool ironlake_check_srwm(struct drm_device *dev, int level,
4363 int fbc_wm, int display_wm, int cursor_wm,
4364 const struct intel_watermark_params *display,
4365 const struct intel_watermark_params *cursor)
4367 struct drm_i915_private *dev_priv = dev->dev_private;
4369 DRM_DEBUG_KMS("watermark %d: display plane %d, fbc lines %d,"
4370 " cursor %d\n", level, display_wm, fbc_wm, cursor_wm);
4372 if (fbc_wm > SNB_FBC_MAX_SRWM) {
4373 DRM_DEBUG_KMS("fbc watermark(%d) is too large(%d), disabling wm%d+\n",
4374 fbc_wm, SNB_FBC_MAX_SRWM, level);
4376 /* fbc has it's own way to disable FBC WM */
4377 I915_WRITE(DISP_ARB_CTL,
4378 I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS);
4382 if (display_wm > display->max_wm) {
4383 DRM_DEBUG_KMS("display watermark(%d) is too large(%d), disabling wm%d+\n",
4384 display_wm, SNB_DISPLAY_MAX_SRWM, level);
4388 if (cursor_wm > cursor->max_wm) {
4389 DRM_DEBUG_KMS("cursor watermark(%d) is too large(%d), disabling wm%d+\n",
4390 cursor_wm, SNB_CURSOR_MAX_SRWM, level);
4394 if (!(fbc_wm || display_wm || cursor_wm)) {
4395 DRM_DEBUG_KMS("latency %d is 0, disabling wm%d+\n", level, level);
4403 * Compute watermark values of WM[1-3],
4405 static bool ironlake_compute_srwm(struct drm_device *dev, int level, int plane,
4407 const struct intel_watermark_params *display,
4408 const struct intel_watermark_params *cursor,
4409 int *fbc_wm, int *display_wm, int *cursor_wm)
4411 struct drm_crtc *crtc;
4412 unsigned long line_time_us;
4413 int hdisplay, htotal, pixel_size, clock;
4414 int line_count, line_size;
4419 *fbc_wm = *display_wm = *cursor_wm = 0;
4423 crtc = intel_get_crtc_for_plane(dev, plane);
4424 hdisplay = crtc->mode.hdisplay;
4425 htotal = crtc->mode.htotal;
4426 clock = crtc->mode.clock;
4427 pixel_size = crtc->fb->bits_per_pixel / 8;
4429 line_time_us = (htotal * 1000) / clock;
4430 line_count = (latency_ns / line_time_us + 1000) / 1000;
4431 line_size = hdisplay * pixel_size;
4433 /* Use the minimum of the small and large buffer method for primary */
4434 small = ((clock * pixel_size / 1000) * latency_ns) / 1000;
4435 large = line_count * line_size;
4437 entries = DIV_ROUND_UP(min(small, large), display->cacheline_size);
4438 *display_wm = entries + display->guard_size;
4442 * FBC WM = ((Final Primary WM * 64) / number of bytes per line) + 2
4444 *fbc_wm = DIV_ROUND_UP(*display_wm * 64, line_size) + 2;
4446 /* calculate the self-refresh watermark for display cursor */
4447 entries = line_count * pixel_size * 64;
4448 entries = DIV_ROUND_UP(entries, cursor->cacheline_size);
4449 *cursor_wm = entries + cursor->guard_size;
4451 return ironlake_check_srwm(dev, level,
4452 *fbc_wm, *display_wm, *cursor_wm,
4456 static void ironlake_update_wm(struct drm_device *dev)
4458 struct drm_i915_private *dev_priv = dev->dev_private;
4459 int fbc_wm, plane_wm, cursor_wm;
4460 unsigned int enabled;
4463 if (g4x_compute_wm0(dev, 0,
4464 &ironlake_display_wm_info,
4465 ILK_LP0_PLANE_LATENCY,
4466 &ironlake_cursor_wm_info,
4467 ILK_LP0_CURSOR_LATENCY,
4468 &plane_wm, &cursor_wm)) {
4469 I915_WRITE(WM0_PIPEA_ILK,
4470 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4471 DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
4472 " plane %d, " "cursor: %d\n",
4473 plane_wm, cursor_wm);
4477 if (g4x_compute_wm0(dev, 1,
4478 &ironlake_display_wm_info,
4479 ILK_LP0_PLANE_LATENCY,
4480 &ironlake_cursor_wm_info,
4481 ILK_LP0_CURSOR_LATENCY,
4482 &plane_wm, &cursor_wm)) {
4483 I915_WRITE(WM0_PIPEB_ILK,
4484 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4485 DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
4486 " plane %d, cursor: %d\n",
4487 plane_wm, cursor_wm);
4492 * Calculate and update the self-refresh watermark only when one
4493 * display plane is used.
4495 I915_WRITE(WM3_LP_ILK, 0);
4496 I915_WRITE(WM2_LP_ILK, 0);
4497 I915_WRITE(WM1_LP_ILK, 0);
4499 if (!single_plane_enabled(enabled))
4501 enabled = ffs(enabled) - 1;
4504 if (!ironlake_compute_srwm(dev, 1, enabled,
4505 ILK_READ_WM1_LATENCY() * 500,
4506 &ironlake_display_srwm_info,
4507 &ironlake_cursor_srwm_info,
4508 &fbc_wm, &plane_wm, &cursor_wm))
4511 I915_WRITE(WM1_LP_ILK,
4513 (ILK_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4514 (fbc_wm << WM1_LP_FBC_SHIFT) |
4515 (plane_wm << WM1_LP_SR_SHIFT) |
4519 if (!ironlake_compute_srwm(dev, 2, enabled,
4520 ILK_READ_WM2_LATENCY() * 500,
4521 &ironlake_display_srwm_info,
4522 &ironlake_cursor_srwm_info,
4523 &fbc_wm, &plane_wm, &cursor_wm))
4526 I915_WRITE(WM2_LP_ILK,
4528 (ILK_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4529 (fbc_wm << WM1_LP_FBC_SHIFT) |
4530 (plane_wm << WM1_LP_SR_SHIFT) |
4534 * WM3 is unsupported on ILK, probably because we don't have latency
4535 * data for that power state
4539 static void sandybridge_update_wm(struct drm_device *dev)
4541 struct drm_i915_private *dev_priv = dev->dev_private;
4542 int latency = SNB_READ_WM0_LATENCY() * 100; /* In unit 0.1us */
4543 int fbc_wm, plane_wm, cursor_wm;
4544 unsigned int enabled;
4547 if (g4x_compute_wm0(dev, 0,
4548 &sandybridge_display_wm_info, latency,
4549 &sandybridge_cursor_wm_info, latency,
4550 &plane_wm, &cursor_wm)) {
4551 I915_WRITE(WM0_PIPEA_ILK,
4552 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4553 DRM_DEBUG_KMS("FIFO watermarks For pipe A -"
4554 " plane %d, " "cursor: %d\n",
4555 plane_wm, cursor_wm);
4559 if (g4x_compute_wm0(dev, 1,
4560 &sandybridge_display_wm_info, latency,
4561 &sandybridge_cursor_wm_info, latency,
4562 &plane_wm, &cursor_wm)) {
4563 I915_WRITE(WM0_PIPEB_ILK,
4564 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4565 DRM_DEBUG_KMS("FIFO watermarks For pipe B -"
4566 " plane %d, cursor: %d\n",
4567 plane_wm, cursor_wm);
4571 /* IVB has 3 pipes */
4572 if (IS_IVYBRIDGE(dev) &&
4573 g4x_compute_wm0(dev, 2,
4574 &sandybridge_display_wm_info, latency,
4575 &sandybridge_cursor_wm_info, latency,
4576 &plane_wm, &cursor_wm)) {
4577 I915_WRITE(WM0_PIPEC_IVB,
4578 (plane_wm << WM0_PIPE_PLANE_SHIFT) | cursor_wm);
4579 DRM_DEBUG_KMS("FIFO watermarks For pipe C -"
4580 " plane %d, cursor: %d\n",
4581 plane_wm, cursor_wm);
4586 * Calculate and update the self-refresh watermark only when one
4587 * display plane is used.
4589 * SNB support 3 levels of watermark.
4591 * WM1/WM2/WM2 watermarks have to be enabled in the ascending order,
4592 * and disabled in the descending order
4595 I915_WRITE(WM3_LP_ILK, 0);
4596 I915_WRITE(WM2_LP_ILK, 0);
4597 I915_WRITE(WM1_LP_ILK, 0);
4599 if (!single_plane_enabled(enabled))
4601 enabled = ffs(enabled) - 1;
4604 if (!ironlake_compute_srwm(dev, 1, enabled,
4605 SNB_READ_WM1_LATENCY() * 500,
4606 &sandybridge_display_srwm_info,
4607 &sandybridge_cursor_srwm_info,
4608 &fbc_wm, &plane_wm, &cursor_wm))
4611 I915_WRITE(WM1_LP_ILK,
4613 (SNB_READ_WM1_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4614 (fbc_wm << WM1_LP_FBC_SHIFT) |
4615 (plane_wm << WM1_LP_SR_SHIFT) |
4619 if (!ironlake_compute_srwm(dev, 2, enabled,
4620 SNB_READ_WM2_LATENCY() * 500,
4621 &sandybridge_display_srwm_info,
4622 &sandybridge_cursor_srwm_info,
4623 &fbc_wm, &plane_wm, &cursor_wm))
4626 I915_WRITE(WM2_LP_ILK,
4628 (SNB_READ_WM2_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4629 (fbc_wm << WM1_LP_FBC_SHIFT) |
4630 (plane_wm << WM1_LP_SR_SHIFT) |
4634 if (!ironlake_compute_srwm(dev, 3, enabled,
4635 SNB_READ_WM3_LATENCY() * 500,
4636 &sandybridge_display_srwm_info,
4637 &sandybridge_cursor_srwm_info,
4638 &fbc_wm, &plane_wm, &cursor_wm))
4641 I915_WRITE(WM3_LP_ILK,
4643 (SNB_READ_WM3_LATENCY() << WM1_LP_LATENCY_SHIFT) |
4644 (fbc_wm << WM1_LP_FBC_SHIFT) |
4645 (plane_wm << WM1_LP_SR_SHIFT) |
4650 * intel_update_watermarks - update FIFO watermark values based on current modes
4652 * Calculate watermark values for the various WM regs based on current mode
4653 * and plane configuration.
4655 * There are several cases to deal with here:
4656 * - normal (i.e. non-self-refresh)
4657 * - self-refresh (SR) mode
4658 * - lines are large relative to FIFO size (buffer can hold up to 2)
4659 * - lines are small relative to FIFO size (buffer can hold more than 2
4660 * lines), so need to account for TLB latency
4662 * The normal calculation is:
4663 * watermark = dotclock * bytes per pixel * latency
4664 * where latency is platform & configuration dependent (we assume pessimal
4667 * The SR calculation is:
4668 * watermark = (trunc(latency/line time)+1) * surface width *
4671 * line time = htotal / dotclock
4672 * surface width = hdisplay for normal plane and 64 for cursor
4673 * and latency is assumed to be high, as above.
4675 * The final value programmed to the register should always be rounded up,
4676 * and include an extra 2 entries to account for clock crossings.
4678 * We don't use the sprite, so we can ignore that. And on Crestline we have
4679 * to set the non-SR watermarks to 8.
4681 static void intel_update_watermarks(struct drm_device *dev)
4683 struct drm_i915_private *dev_priv = dev->dev_private;
4685 if (dev_priv->display.update_wm)
4686 dev_priv->display.update_wm(dev);
4689 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
4691 if (i915_panel_use_ssc >= 0)
4692 return i915_panel_use_ssc != 0;
4693 return dev_priv->lvds_use_ssc
4694 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
4698 * intel_choose_pipe_bpp_dither - figure out what color depth the pipe should send
4699 * @crtc: CRTC structure
4700 * @mode: requested mode
4702 * A pipe may be connected to one or more outputs. Based on the depth of the
4703 * attached framebuffer, choose a good color depth to use on the pipe.
4705 * If possible, match the pipe depth to the fb depth. In some cases, this
4706 * isn't ideal, because the connected output supports a lesser or restricted
4707 * set of depths. Resolve that here:
4708 * LVDS typically supports only 6bpc, so clamp down in that case
4709 * HDMI supports only 8bpc or 12bpc, so clamp to 8bpc with dither for 10bpc
4710 * Displays may support a restricted set as well, check EDID and clamp as
4712 * DP may want to dither down to 6bpc to fit larger modes
4715 * Dithering requirement (i.e. false if display bpc and pipe bpc match,
4716 * true if they don't match).
4718 static bool intel_choose_pipe_bpp_dither(struct drm_crtc *crtc,
4719 unsigned int *pipe_bpp,
4720 struct drm_display_mode *mode)
4722 struct drm_device *dev = crtc->dev;
4723 struct drm_i915_private *dev_priv = dev->dev_private;
4724 struct drm_encoder *encoder;
4725 struct drm_connector *connector;
4726 unsigned int display_bpc = UINT_MAX, bpc;
4728 /* Walk the encoders & connectors on this crtc, get min bpc */
4729 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
4730 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
4732 if (encoder->crtc != crtc)
4735 if (intel_encoder->type == INTEL_OUTPUT_LVDS) {
4736 unsigned int lvds_bpc;
4738 if ((I915_READ(PCH_LVDS) & LVDS_A3_POWER_MASK) ==
4744 if (lvds_bpc < display_bpc) {
4745 DRM_DEBUG_KMS("clamping display bpc (was %d) to LVDS (%d)\n", display_bpc, lvds_bpc);
4746 display_bpc = lvds_bpc;
4751 /* Not one of the known troublemakers, check the EDID */
4752 list_for_each_entry(connector, &dev->mode_config.connector_list,
4754 if (connector->encoder != encoder)
4757 /* Don't use an invalid EDID bpc value */
4758 if (connector->display_info.bpc &&
4759 connector->display_info.bpc < display_bpc) {
4760 DRM_DEBUG_KMS("clamping display bpc (was %d) to EDID reported max of %d\n", display_bpc, connector->display_info.bpc);
4761 display_bpc = connector->display_info.bpc;
4765 if (intel_encoder->type == INTEL_OUTPUT_EDP) {
4766 /* Use VBT settings if we have an eDP panel */
4767 unsigned int edp_bpc = dev_priv->edp.bpp / 3;
4769 if (edp_bpc && edp_bpc < display_bpc) {
4770 DRM_DEBUG_KMS("clamping display bpc (was %d) to eDP (%d)\n", display_bpc, edp_bpc);
4771 display_bpc = edp_bpc;
4777 * HDMI is either 12 or 8, so if the display lets 10bpc sneak
4778 * through, clamp it down. (Note: >12bpc will be caught below.)
4780 if (intel_encoder->type == INTEL_OUTPUT_HDMI) {
4781 if (display_bpc > 8 && display_bpc < 12) {
4782 DRM_DEBUG_KMS("forcing bpc to 12 for HDMI\n");
4785 DRM_DEBUG_KMS("forcing bpc to 8 for HDMI\n");
4791 if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
4792 DRM_DEBUG_KMS("Dithering DP to 6bpc\n");
4797 * We could just drive the pipe at the highest bpc all the time and
4798 * enable dithering as needed, but that costs bandwidth. So choose
4799 * the minimum value that expresses the full color range of the fb but
4800 * also stays within the max display bpc discovered above.
4803 switch (crtc->fb->depth) {
4805 bpc = 8; /* since we go through a colormap */
4809 bpc = 6; /* min is 18bpp */
4821 DRM_DEBUG("unsupported depth, assuming 24 bits\n");
4822 bpc = min((unsigned int)8, display_bpc);
4826 display_bpc = min(display_bpc, bpc);
4828 DRM_DEBUG_KMS("setting pipe bpc to %d (max display bpc %d)\n",
4831 *pipe_bpp = display_bpc * 3;
4833 return display_bpc != bpc;
4836 static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
4837 struct drm_display_mode *mode,
4838 struct drm_display_mode *adjusted_mode,
4840 struct drm_framebuffer *old_fb)
4842 struct drm_device *dev = crtc->dev;
4843 struct drm_i915_private *dev_priv = dev->dev_private;
4844 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4845 int pipe = intel_crtc->pipe;
4846 int plane = intel_crtc->plane;
4847 int refclk, num_connectors = 0;
4848 intel_clock_t clock, reduced_clock;
4849 u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
4850 bool ok, has_reduced_clock = false, is_sdvo = false, is_dvo = false;
4851 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
4852 struct drm_mode_config *mode_config = &dev->mode_config;
4853 struct intel_encoder *encoder;
4854 const intel_limit_t *limit;
4859 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
4860 if (encoder->base.crtc != crtc)
4863 switch (encoder->type) {
4864 case INTEL_OUTPUT_LVDS:
4867 case INTEL_OUTPUT_SDVO:
4868 case INTEL_OUTPUT_HDMI:
4870 if (encoder->needs_tv_clock)
4873 case INTEL_OUTPUT_DVO:
4876 case INTEL_OUTPUT_TVOUT:
4879 case INTEL_OUTPUT_ANALOG:
4882 case INTEL_OUTPUT_DISPLAYPORT:
4890 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
4891 refclk = dev_priv->lvds_ssc_freq * 1000;
4892 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
4894 } else if (!IS_GEN2(dev)) {
4901 * Returns a set of divisors for the desired target clock with the given
4902 * refclk, or FALSE. The returned values represent the clock equation:
4903 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
4905 limit = intel_limit(crtc, refclk);
4906 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
4908 DRM_ERROR("Couldn't find PLL settings for mode!\n");
4912 /* Ensure that the cursor is valid for the new mode before changing... */
4913 intel_crtc_update_cursor(crtc, true);
4915 if (is_lvds && dev_priv->lvds_downclock_avail) {
4916 has_reduced_clock = limit->find_pll(limit, crtc,
4917 dev_priv->lvds_downclock,
4920 if (has_reduced_clock && (clock.p != reduced_clock.p)) {
4922 * If the different P is found, it means that we can't
4923 * switch the display clock by using the FP0/FP1.
4924 * In such case we will disable the LVDS downclock
4927 DRM_DEBUG_KMS("Different P is found for "
4928 "LVDS clock/downclock\n");
4929 has_reduced_clock = 0;
4932 /* SDVO TV has fixed PLL values depend on its clock range,
4933 this mirrors vbios setting. */
4934 if (is_sdvo && is_tv) {
4935 if (adjusted_mode->clock >= 100000
4936 && adjusted_mode->clock < 140500) {
4942 } else if (adjusted_mode->clock >= 140500
4943 && adjusted_mode->clock <= 200000) {
4952 if (IS_PINEVIEW(dev)) {
4953 fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2;
4954 if (has_reduced_clock)
4955 fp2 = (1 << reduced_clock.n) << 16 |
4956 reduced_clock.m1 << 8 | reduced_clock.m2;
4958 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
4959 if (has_reduced_clock)
4960 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
4964 dpll = DPLL_VGA_MODE_DIS;
4966 if (!IS_GEN2(dev)) {
4968 dpll |= DPLLB_MODE_LVDS;
4970 dpll |= DPLLB_MODE_DAC_SERIAL;
4972 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
4973 if (pixel_multiplier > 1) {
4974 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
4975 dpll |= (pixel_multiplier - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
4977 dpll |= DPLL_DVO_HIGH_SPEED;
4980 dpll |= DPLL_DVO_HIGH_SPEED;
4982 /* compute bitmask from p1 value */
4983 if (IS_PINEVIEW(dev))
4984 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
4986 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4987 if (IS_G4X(dev) && has_reduced_clock)
4988 dpll |= (1 << (reduced_clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
4992 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
4995 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
4998 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
5001 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
5004 if (INTEL_INFO(dev)->gen >= 4)
5005 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
5008 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
5011 dpll |= PLL_P1_DIVIDE_BY_TWO;
5013 dpll |= (clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
5015 dpll |= PLL_P2_DIVIDE_BY_4;
5019 if (is_sdvo && is_tv)
5020 dpll |= PLL_REF_INPUT_TVCLKINBC;
5022 /* XXX: just matching BIOS for now */
5023 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
5025 else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
5026 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
5028 dpll |= PLL_REF_INPUT_DREFCLK;
5030 /* setup pipeconf */
5031 pipeconf = I915_READ(PIPECONF(pipe));
5033 /* Set up the display plane register */
5034 dspcntr = DISPPLANE_GAMMA_ENABLE;
5036 /* Ironlake's plane is forced to pipe, bit 24 is to
5037 enable color space conversion */
5039 dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
5041 dspcntr |= DISPPLANE_SEL_PIPE_B;
5043 if (pipe == 0 && INTEL_INFO(dev)->gen < 4) {
5044 /* Enable pixel doubling when the dot clock is > 90% of the (display)
5047 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
5051 dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
5052 pipeconf |= PIPECONF_DOUBLE_WIDE;
5054 pipeconf &= ~PIPECONF_DOUBLE_WIDE;
5057 /* default to 8bpc */
5058 pipeconf &= ~(PIPECONF_BPP_MASK | PIPECONF_DITHER_EN);
5060 if (adjusted_mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
5061 pipeconf |= PIPECONF_BPP_6 |
5062 PIPECONF_DITHER_EN |
5063 PIPECONF_DITHER_TYPE_SP;
5067 dpll |= DPLL_VCO_ENABLE;
5069 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
5070 drm_mode_debug_printmodeline(mode);
5072 I915_WRITE(FP0(pipe), fp);
5073 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
5075 POSTING_READ(DPLL(pipe));
5078 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
5079 * This is an exception to the general rule that mode_set doesn't turn
5083 temp = I915_READ(LVDS);
5084 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
5086 temp |= LVDS_PIPEB_SELECT;
5088 temp &= ~LVDS_PIPEB_SELECT;
5090 /* set the corresponsding LVDS_BORDER bit */
5091 temp |= dev_priv->lvds_border_bits;
5092 /* Set the B0-B3 data pairs corresponding to whether we're going to
5093 * set the DPLLs for dual-channel mode or not.
5096 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
5098 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
5100 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
5101 * appropriately here, but we need to look more thoroughly into how
5102 * panels behave in the two modes.
5104 /* set the dithering flag on LVDS as needed */
5105 if (INTEL_INFO(dev)->gen >= 4) {
5106 if (dev_priv->lvds_dither)
5107 temp |= LVDS_ENABLE_DITHER;
5109 temp &= ~LVDS_ENABLE_DITHER;
5111 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
5112 lvds_sync |= LVDS_HSYNC_POLARITY;
5113 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
5114 lvds_sync |= LVDS_VSYNC_POLARITY;
5115 if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
5117 char flags[2] = "-+";
5118 DRM_INFO("Changing LVDS panel from "
5119 "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
5120 flags[!(temp & LVDS_HSYNC_POLARITY)],
5121 flags[!(temp & LVDS_VSYNC_POLARITY)],
5122 flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
5123 flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
5124 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
5127 I915_WRITE(LVDS, temp);
5131 intel_dp_set_m_n(crtc, mode, adjusted_mode);
5134 I915_WRITE(DPLL(pipe), dpll);
5136 /* Wait for the clocks to stabilize. */
5137 POSTING_READ(DPLL(pipe));
5140 if (INTEL_INFO(dev)->gen >= 4) {
5143 temp = intel_mode_get_pixel_multiplier(adjusted_mode);
5145 temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
5149 I915_WRITE(DPLL_MD(pipe), temp);
5151 /* The pixel multiplier can only be updated once the
5152 * DPLL is enabled and the clocks are stable.
5154 * So write it again.
5156 I915_WRITE(DPLL(pipe), dpll);
5159 intel_crtc->lowfreq_avail = false;
5160 if (is_lvds && has_reduced_clock && i915_powersave) {
5161 I915_WRITE(FP1(pipe), fp2);
5162 intel_crtc->lowfreq_avail = true;
5163 if (HAS_PIPE_CXSR(dev)) {
5164 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
5165 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
5168 I915_WRITE(FP1(pipe), fp);
5169 if (HAS_PIPE_CXSR(dev)) {
5170 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
5171 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
5175 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
5176 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
5177 /* the chip adds 2 halflines automatically */
5178 adjusted_mode->crtc_vdisplay -= 1;
5179 adjusted_mode->crtc_vtotal -= 1;
5180 adjusted_mode->crtc_vblank_start -= 1;
5181 adjusted_mode->crtc_vblank_end -= 1;
5182 adjusted_mode->crtc_vsync_end -= 1;
5183 adjusted_mode->crtc_vsync_start -= 1;
5185 pipeconf &= ~PIPECONF_INTERLACE_W_FIELD_INDICATION; /* progressive */
5187 I915_WRITE(HTOTAL(pipe),
5188 (adjusted_mode->crtc_hdisplay - 1) |
5189 ((adjusted_mode->crtc_htotal - 1) << 16));
5190 I915_WRITE(HBLANK(pipe),
5191 (adjusted_mode->crtc_hblank_start - 1) |
5192 ((adjusted_mode->crtc_hblank_end - 1) << 16));
5193 I915_WRITE(HSYNC(pipe),
5194 (adjusted_mode->crtc_hsync_start - 1) |
5195 ((adjusted_mode->crtc_hsync_end - 1) << 16));
5197 I915_WRITE(VTOTAL(pipe),
5198 (adjusted_mode->crtc_vdisplay - 1) |
5199 ((adjusted_mode->crtc_vtotal - 1) << 16));
5200 I915_WRITE(VBLANK(pipe),
5201 (adjusted_mode->crtc_vblank_start - 1) |
5202 ((adjusted_mode->crtc_vblank_end - 1) << 16));
5203 I915_WRITE(VSYNC(pipe),
5204 (adjusted_mode->crtc_vsync_start - 1) |
5205 ((adjusted_mode->crtc_vsync_end - 1) << 16));
5207 /* pipesrc and dspsize control the size that is scaled from,
5208 * which should always be the user's requested size.
5210 I915_WRITE(DSPSIZE(plane),
5211 ((mode->vdisplay - 1) << 16) |
5212 (mode->hdisplay - 1));
5213 I915_WRITE(DSPPOS(plane), 0);
5214 I915_WRITE(PIPESRC(pipe),
5215 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
5217 I915_WRITE(PIPECONF(pipe), pipeconf);
5218 POSTING_READ(PIPECONF(pipe));
5219 intel_enable_pipe(dev_priv, pipe, false);
5221 intel_wait_for_vblank(dev, pipe);
5223 I915_WRITE(DSPCNTR(plane), dspcntr);
5224 POSTING_READ(DSPCNTR(plane));
5225 intel_enable_plane(dev_priv, plane, pipe);
5227 ret = intel_pipe_set_base(crtc, x, y, old_fb);
5229 intel_update_watermarks(dev);
5235 * Initialize reference clocks when the driver loads
5237 void ironlake_init_pch_refclk(struct drm_device *dev)
5239 struct drm_i915_private *dev_priv = dev->dev_private;
5240 struct drm_mode_config *mode_config = &dev->mode_config;
5241 struct intel_encoder *encoder;
5243 bool has_lvds = false;
5244 bool has_cpu_edp = false;
5245 bool has_pch_edp = false;
5246 bool has_panel = false;
5247 bool has_ck505 = false;
5248 bool can_ssc = false;
5250 /* We need to take the global config into account */
5251 list_for_each_entry(encoder, &mode_config->encoder_list,
5253 switch (encoder->type) {
5254 case INTEL_OUTPUT_LVDS:
5258 case INTEL_OUTPUT_EDP:
5260 if (intel_encoder_is_pch_edp(&encoder->base))
5268 if (HAS_PCH_IBX(dev)) {
5269 has_ck505 = dev_priv->display_clock_mode;
5270 can_ssc = has_ck505;
5276 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_pch_edp %d has_cpu_edp %d has_ck505 %d\n",
5277 has_panel, has_lvds, has_pch_edp, has_cpu_edp,
5280 /* Ironlake: try to setup display ref clock before DPLL
5281 * enabling. This is only under driver's control after
5282 * PCH B stepping, previous chipset stepping should be
5283 * ignoring this setting.
5285 temp = I915_READ(PCH_DREF_CONTROL);
5286 /* Always enable nonspread source */
5287 temp &= ~DREF_NONSPREAD_SOURCE_MASK;
5290 temp |= DREF_NONSPREAD_CK505_ENABLE;
5292 temp |= DREF_NONSPREAD_SOURCE_ENABLE;
5295 temp &= ~DREF_SSC_SOURCE_MASK;
5296 temp |= DREF_SSC_SOURCE_ENABLE;
5298 /* SSC must be turned on before enabling the CPU output */
5299 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
5300 DRM_DEBUG_KMS("Using SSC on panel\n");
5301 temp |= DREF_SSC1_ENABLE;
5304 /* Get SSC going before enabling the outputs */
5305 I915_WRITE(PCH_DREF_CONTROL, temp);
5306 POSTING_READ(PCH_DREF_CONTROL);
5309 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
5311 /* Enable CPU source on CPU attached eDP */
5313 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
5314 DRM_DEBUG_KMS("Using SSC on eDP\n");
5315 temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
5318 temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
5320 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
5322 I915_WRITE(PCH_DREF_CONTROL, temp);
5323 POSTING_READ(PCH_DREF_CONTROL);
5326 DRM_DEBUG_KMS("Disabling SSC entirely\n");
5328 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
5330 /* Turn off CPU output */
5331 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
5333 I915_WRITE(PCH_DREF_CONTROL, temp);
5334 POSTING_READ(PCH_DREF_CONTROL);
5337 /* Turn off the SSC source */
5338 temp &= ~DREF_SSC_SOURCE_MASK;
5339 temp |= DREF_SSC_SOURCE_DISABLE;
5342 temp &= ~ DREF_SSC1_ENABLE;
5344 I915_WRITE(PCH_DREF_CONTROL, temp);
5345 POSTING_READ(PCH_DREF_CONTROL);
5350 static int ironlake_get_refclk(struct drm_crtc *crtc)
5352 struct drm_device *dev = crtc->dev;
5353 struct drm_i915_private *dev_priv = dev->dev_private;
5354 struct intel_encoder *encoder;
5355 struct drm_mode_config *mode_config = &dev->mode_config;
5356 struct intel_encoder *edp_encoder = NULL;
5357 int num_connectors = 0;
5358 bool is_lvds = false;
5360 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
5361 if (encoder->base.crtc != crtc)
5364 switch (encoder->type) {
5365 case INTEL_OUTPUT_LVDS:
5368 case INTEL_OUTPUT_EDP:
5369 edp_encoder = encoder;
5375 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
5376 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
5377 dev_priv->lvds_ssc_freq);
5378 return dev_priv->lvds_ssc_freq * 1000;
5384 static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
5385 struct drm_display_mode *mode,
5386 struct drm_display_mode *adjusted_mode,
5388 struct drm_framebuffer *old_fb)
5390 struct drm_device *dev = crtc->dev;
5391 struct drm_i915_private *dev_priv = dev->dev_private;
5392 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5393 int pipe = intel_crtc->pipe;
5394 int plane = intel_crtc->plane;
5395 int refclk, num_connectors = 0;
5396 intel_clock_t clock, reduced_clock;
5397 u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
5398 bool ok, has_reduced_clock = false, is_sdvo = false;
5399 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
5400 struct intel_encoder *has_edp_encoder = NULL;
5401 struct drm_mode_config *mode_config = &dev->mode_config;
5402 struct intel_encoder *encoder;
5403 const intel_limit_t *limit;
5405 struct fdi_m_n m_n = {0};
5408 int target_clock, pixel_multiplier, lane, link_bw, factor;
5409 unsigned int pipe_bpp;
5412 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
5413 if (encoder->base.crtc != crtc)
5416 switch (encoder->type) {
5417 case INTEL_OUTPUT_LVDS:
5420 case INTEL_OUTPUT_SDVO:
5421 case INTEL_OUTPUT_HDMI:
5423 if (encoder->needs_tv_clock)
5426 case INTEL_OUTPUT_TVOUT:
5429 case INTEL_OUTPUT_ANALOG:
5432 case INTEL_OUTPUT_DISPLAYPORT:
5435 case INTEL_OUTPUT_EDP:
5436 has_edp_encoder = encoder;
5443 refclk = ironlake_get_refclk(crtc);
5446 * Returns a set of divisors for the desired target clock with the given
5447 * refclk, or FALSE. The returned values represent the clock equation:
5448 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
5450 limit = intel_limit(crtc, refclk);
5451 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
5453 DRM_ERROR("Couldn't find PLL settings for mode!\n");
5457 /* Ensure that the cursor is valid for the new mode before changing... */
5458 intel_crtc_update_cursor(crtc, true);
5460 if (is_lvds && dev_priv->lvds_downclock_avail) {
5461 has_reduced_clock = limit->find_pll(limit, crtc,
5462 dev_priv->lvds_downclock,
5465 if (has_reduced_clock && (clock.p != reduced_clock.p)) {
5467 * If the different P is found, it means that we can't
5468 * switch the display clock by using the FP0/FP1.
5469 * In such case we will disable the LVDS downclock
5472 DRM_DEBUG_KMS("Different P is found for "
5473 "LVDS clock/downclock\n");
5474 has_reduced_clock = 0;
5477 /* SDVO TV has fixed PLL values depend on its clock range,
5478 this mirrors vbios setting. */
5479 if (is_sdvo && is_tv) {
5480 if (adjusted_mode->clock >= 100000
5481 && adjusted_mode->clock < 140500) {
5487 } else if (adjusted_mode->clock >= 140500
5488 && adjusted_mode->clock <= 200000) {
5498 pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
5500 /* CPU eDP doesn't require FDI link, so just set DP M/N
5501 according to current link config */
5502 if (has_edp_encoder &&
5503 !intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
5504 target_clock = mode->clock;
5505 intel_edp_link_config(has_edp_encoder,
5508 /* [e]DP over FDI requires target mode clock
5509 instead of link clock */
5510 if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base))
5511 target_clock = mode->clock;
5513 target_clock = adjusted_mode->clock;
5515 /* FDI is a binary signal running at ~2.7GHz, encoding
5516 * each output octet as 10 bits. The actual frequency
5517 * is stored as a divider into a 100MHz clock, and the
5518 * mode pixel clock is stored in units of 1KHz.
5519 * Hence the bw of each lane in terms of the mode signal
5522 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
5525 /* determine panel color depth */
5526 temp = I915_READ(PIPECONF(pipe));
5527 temp &= ~PIPE_BPC_MASK;
5528 dither = intel_choose_pipe_bpp_dither(crtc, &pipe_bpp, adjusted_mode);
5543 WARN(1, "intel_choose_pipe_bpp returned invalid value %d\n",
5550 intel_crtc->bpp = pipe_bpp;
5551 I915_WRITE(PIPECONF(pipe), temp);
5555 * Account for spread spectrum to avoid
5556 * oversubscribing the link. Max center spread
5557 * is 2.5%; use 5% for safety's sake.
5559 u32 bps = target_clock * intel_crtc->bpp * 21 / 20;
5560 lane = bps / (link_bw * 8) + 1;
5563 intel_crtc->fdi_lanes = lane;
5565 if (pixel_multiplier > 1)
5566 link_bw *= pixel_multiplier;
5567 ironlake_compute_m_n(intel_crtc->bpp, lane, target_clock, link_bw,
5570 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
5571 if (has_reduced_clock)
5572 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
5575 /* Enable autotuning of the PLL clock (if permissible) */
5578 if ((intel_panel_use_ssc(dev_priv) &&
5579 dev_priv->lvds_ssc_freq == 100) ||
5580 (I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
5582 } else if (is_sdvo && is_tv)
5585 if (clock.m < factor * clock.n)
5591 dpll |= DPLLB_MODE_LVDS;
5593 dpll |= DPLLB_MODE_DAC_SERIAL;
5595 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
5596 if (pixel_multiplier > 1) {
5597 dpll |= (pixel_multiplier - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
5599 dpll |= DPLL_DVO_HIGH_SPEED;
5601 if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base))
5602 dpll |= DPLL_DVO_HIGH_SPEED;
5604 /* compute bitmask from p1 value */
5605 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
5607 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
5611 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
5614 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
5617 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
5620 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
5624 if (is_sdvo && is_tv)
5625 dpll |= PLL_REF_INPUT_TVCLKINBC;
5627 /* XXX: just matching BIOS for now */
5628 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
5630 else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
5631 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
5633 dpll |= PLL_REF_INPUT_DREFCLK;
5635 /* setup pipeconf */
5636 pipeconf = I915_READ(PIPECONF(pipe));
5638 /* Set up the display plane register */
5639 dspcntr = DISPPLANE_GAMMA_ENABLE;
5641 DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
5642 drm_mode_debug_printmodeline(mode);
5644 /* PCH eDP needs FDI, but CPU eDP does not */
5645 if (!intel_crtc->no_pll) {
5646 if (!has_edp_encoder ||
5647 intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
5648 I915_WRITE(PCH_FP0(pipe), fp);
5649 I915_WRITE(PCH_DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
5651 POSTING_READ(PCH_DPLL(pipe));
5655 if (dpll == (I915_READ(PCH_DPLL(0)) & 0x7fffffff) &&
5656 fp == I915_READ(PCH_FP0(0))) {
5657 intel_crtc->use_pll_a = true;
5658 DRM_DEBUG_KMS("using pipe a dpll\n");
5659 } else if (dpll == (I915_READ(PCH_DPLL(1)) & 0x7fffffff) &&
5660 fp == I915_READ(PCH_FP0(1))) {
5661 intel_crtc->use_pll_a = false;
5662 DRM_DEBUG_KMS("using pipe b dpll\n");
5664 DRM_DEBUG_KMS("no matching PLL configuration for pipe 2\n");
5669 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
5670 * This is an exception to the general rule that mode_set doesn't turn
5674 temp = I915_READ(PCH_LVDS);
5675 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
5676 if (HAS_PCH_CPT(dev)) {
5677 temp &= ~PORT_TRANS_SEL_MASK;
5678 temp |= PORT_TRANS_SEL_CPT(pipe);
5681 temp |= LVDS_PIPEB_SELECT;
5683 temp &= ~LVDS_PIPEB_SELECT;
5686 /* set the corresponsding LVDS_BORDER bit */
5687 temp |= dev_priv->lvds_border_bits;
5688 /* Set the B0-B3 data pairs corresponding to whether we're going to
5689 * set the DPLLs for dual-channel mode or not.
5692 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
5694 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
5696 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
5697 * appropriately here, but we need to look more thoroughly into how
5698 * panels behave in the two modes.
5700 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
5701 lvds_sync |= LVDS_HSYNC_POLARITY;
5702 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
5703 lvds_sync |= LVDS_VSYNC_POLARITY;
5704 if ((temp & (LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY))
5706 char flags[2] = "-+";
5707 DRM_INFO("Changing LVDS panel from "
5708 "(%chsync, %cvsync) to (%chsync, %cvsync)\n",
5709 flags[!(temp & LVDS_HSYNC_POLARITY)],
5710 flags[!(temp & LVDS_VSYNC_POLARITY)],
5711 flags[!(lvds_sync & LVDS_HSYNC_POLARITY)],
5712 flags[!(lvds_sync & LVDS_VSYNC_POLARITY)]);
5713 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
5716 I915_WRITE(PCH_LVDS, temp);
5719 pipeconf &= ~PIPECONF_DITHER_EN;
5720 pipeconf &= ~PIPECONF_DITHER_TYPE_MASK;
5721 if ((is_lvds && dev_priv->lvds_dither) || dither) {
5722 pipeconf |= PIPECONF_DITHER_EN;
5723 pipeconf |= PIPECONF_DITHER_TYPE_SP;
5725 if (is_dp || intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
5726 intel_dp_set_m_n(crtc, mode, adjusted_mode);
5728 /* For non-DP output, clear any trans DP clock recovery setting.*/
5729 I915_WRITE(TRANSDATA_M1(pipe), 0);
5730 I915_WRITE(TRANSDATA_N1(pipe), 0);
5731 I915_WRITE(TRANSDPLINK_M1(pipe), 0);
5732 I915_WRITE(TRANSDPLINK_N1(pipe), 0);
5735 if (!intel_crtc->no_pll &&
5736 (!has_edp_encoder ||
5737 intel_encoder_is_pch_edp(&has_edp_encoder->base))) {
5738 I915_WRITE(PCH_DPLL(pipe), dpll);
5740 /* Wait for the clocks to stabilize. */
5741 POSTING_READ(PCH_DPLL(pipe));
5744 /* The pixel multiplier can only be updated once the
5745 * DPLL is enabled and the clocks are stable.
5747 * So write it again.
5749 I915_WRITE(PCH_DPLL(pipe), dpll);
5752 intel_crtc->lowfreq_avail = false;
5753 if (!intel_crtc->no_pll) {
5754 if (is_lvds && has_reduced_clock && i915_powersave) {
5755 I915_WRITE(PCH_FP1(pipe), fp2);
5756 intel_crtc->lowfreq_avail = true;
5757 if (HAS_PIPE_CXSR(dev)) {
5758 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
5759 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
5762 I915_WRITE(PCH_FP1(pipe), fp);
5763 if (HAS_PIPE_CXSR(dev)) {
5764 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
5765 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
5770 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
5771 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
5772 /* the chip adds 2 halflines automatically */
5773 adjusted_mode->crtc_vdisplay -= 1;
5774 adjusted_mode->crtc_vtotal -= 1;
5775 adjusted_mode->crtc_vblank_start -= 1;
5776 adjusted_mode->crtc_vblank_end -= 1;
5777 adjusted_mode->crtc_vsync_end -= 1;
5778 adjusted_mode->crtc_vsync_start -= 1;
5780 pipeconf &= ~PIPECONF_INTERLACE_W_FIELD_INDICATION; /* progressive */
5782 I915_WRITE(HTOTAL(pipe),
5783 (adjusted_mode->crtc_hdisplay - 1) |
5784 ((adjusted_mode->crtc_htotal - 1) << 16));
5785 I915_WRITE(HBLANK(pipe),
5786 (adjusted_mode->crtc_hblank_start - 1) |
5787 ((adjusted_mode->crtc_hblank_end - 1) << 16));
5788 I915_WRITE(HSYNC(pipe),
5789 (adjusted_mode->crtc_hsync_start - 1) |
5790 ((adjusted_mode->crtc_hsync_end - 1) << 16));
5792 I915_WRITE(VTOTAL(pipe),
5793 (adjusted_mode->crtc_vdisplay - 1) |
5794 ((adjusted_mode->crtc_vtotal - 1) << 16));
5795 I915_WRITE(VBLANK(pipe),
5796 (adjusted_mode->crtc_vblank_start - 1) |
5797 ((adjusted_mode->crtc_vblank_end - 1) << 16));
5798 I915_WRITE(VSYNC(pipe),
5799 (adjusted_mode->crtc_vsync_start - 1) |
5800 ((adjusted_mode->crtc_vsync_end - 1) << 16));
5802 /* pipesrc controls the size that is scaled from, which should
5803 * always be the user's requested size.
5805 I915_WRITE(PIPESRC(pipe),
5806 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
5808 I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
5809 I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
5810 I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
5811 I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
5813 if (has_edp_encoder &&
5814 !intel_encoder_is_pch_edp(&has_edp_encoder->base)) {
5815 ironlake_set_pll_edp(crtc, adjusted_mode->clock);
5818 I915_WRITE(PIPECONF(pipe), pipeconf);
5819 POSTING_READ(PIPECONF(pipe));
5821 intel_wait_for_vblank(dev, pipe);
5824 /* enable address swizzle for tiling buffer */
5825 temp = I915_READ(DISP_ARB_CTL);
5826 I915_WRITE(DISP_ARB_CTL, temp | DISP_TILE_SURFACE_SWIZZLING);
5829 I915_WRITE(DSPCNTR(plane), dspcntr);
5830 POSTING_READ(DSPCNTR(plane));
5832 ret = intel_pipe_set_base(crtc, x, y, old_fb);
5834 intel_update_watermarks(dev);
5839 static int intel_crtc_mode_set(struct drm_crtc *crtc,
5840 struct drm_display_mode *mode,
5841 struct drm_display_mode *adjusted_mode,
5843 struct drm_framebuffer *old_fb)
5845 struct drm_device *dev = crtc->dev;
5846 struct drm_i915_private *dev_priv = dev->dev_private;
5847 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5848 int pipe = intel_crtc->pipe;
5851 drm_vblank_pre_modeset(dev, pipe);
5853 ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
5856 drm_vblank_post_modeset(dev, pipe);
5858 intel_crtc->dpms_mode = DRM_MODE_DPMS_ON;
5863 static void g4x_write_eld(struct drm_connector *connector,
5864 struct drm_crtc *crtc)
5866 struct drm_i915_private *dev_priv = connector->dev->dev_private;
5867 uint8_t *eld = connector->eld;
5872 i = I915_READ(G4X_AUD_VID_DID);
5874 if (i == INTEL_AUDIO_DEVBLC || i == INTEL_AUDIO_DEVCL)
5875 eldv = G4X_ELDV_DEVCL_DEVBLC;
5877 eldv = G4X_ELDV_DEVCTG;
5879 i = I915_READ(G4X_AUD_CNTL_ST);
5880 i &= ~(eldv | G4X_ELD_ADDR);
5881 len = (i >> 9) & 0x1f; /* ELD buffer size */
5882 I915_WRITE(G4X_AUD_CNTL_ST, i);
5887 len = min_t(uint8_t, eld[2], len);
5888 DRM_DEBUG_DRIVER("ELD size %d\n", len);
5889 for (i = 0; i < len; i++)
5890 I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i));
5892 i = I915_READ(G4X_AUD_CNTL_ST);
5894 I915_WRITE(G4X_AUD_CNTL_ST, i);
5897 static void ironlake_write_eld(struct drm_connector *connector,
5898 struct drm_crtc *crtc)
5900 struct drm_i915_private *dev_priv = connector->dev->dev_private;
5901 uint8_t *eld = connector->eld;
5909 if (HAS_PCH_IBX(connector->dev)) {
5910 hdmiw_hdmiedid = GEN5_HDMIW_HDMIEDID_A;
5911 aud_cntl_st = GEN5_AUD_CNTL_ST_A;
5912 aud_cntrl_st2 = GEN5_AUD_CNTL_ST2;
5914 hdmiw_hdmiedid = GEN7_HDMIW_HDMIEDID_A;
5915 aud_cntl_st = GEN7_AUD_CNTRL_ST_A;
5916 aud_cntrl_st2 = GEN7_AUD_CNTRL_ST2;
5919 i = to_intel_crtc(crtc)->pipe;
5920 hdmiw_hdmiedid += i * 0x100;
5921 aud_cntl_st += i * 0x100;
5923 DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(i));
5925 i = I915_READ(aud_cntl_st);
5926 i = (i >> 29) & 0x3; /* DIP_Port_Select, 0x1 = PortB */
5928 DRM_DEBUG_DRIVER("Audio directed to unknown port\n");
5929 /* operate blindly on all ports */
5930 eldv = GEN5_ELD_VALIDB;
5931 eldv |= GEN5_ELD_VALIDB << 4;
5932 eldv |= GEN5_ELD_VALIDB << 8;
5934 DRM_DEBUG_DRIVER("ELD on port %c\n", 'A' + i);
5935 eldv = GEN5_ELD_VALIDB << ((i - 1) * 4);
5938 i = I915_READ(aud_cntrl_st2);
5940 I915_WRITE(aud_cntrl_st2, i);
5945 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
5946 DRM_DEBUG_DRIVER("ELD: DisplayPort detected\n");
5947 eld[5] |= (1 << 2); /* Conn_Type, 0x1 = DisplayPort */
5950 i = I915_READ(aud_cntl_st);
5951 i &= ~GEN5_ELD_ADDRESS;
5952 I915_WRITE(aud_cntl_st, i);
5954 len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */
5955 DRM_DEBUG_DRIVER("ELD size %d\n", len);
5956 for (i = 0; i < len; i++)
5957 I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i));
5959 i = I915_READ(aud_cntrl_st2);
5961 I915_WRITE(aud_cntrl_st2, i);
5964 void intel_write_eld(struct drm_encoder *encoder,
5965 struct drm_display_mode *mode)
5967 struct drm_crtc *crtc = encoder->crtc;
5968 struct drm_connector *connector;
5969 struct drm_device *dev = encoder->dev;
5970 struct drm_i915_private *dev_priv = dev->dev_private;
5972 connector = drm_select_eld(encoder, mode);
5976 DRM_DEBUG_DRIVER("ELD on [CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
5978 drm_get_connector_name(connector),
5979 connector->encoder->base.id,
5980 drm_get_encoder_name(connector->encoder));
5982 connector->eld[6] = drm_av_sync_delay(connector, mode) / 2;
5984 if (dev_priv->display.write_eld)
5985 dev_priv->display.write_eld(connector, crtc);
5988 /** Loads the palette/gamma unit for the CRTC with the prepared values */
5989 void intel_crtc_load_lut(struct drm_crtc *crtc)
5991 struct drm_device *dev = crtc->dev;
5992 struct drm_i915_private *dev_priv = dev->dev_private;
5993 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5994 int palreg = PALETTE(intel_crtc->pipe);
5997 /* The clocks have to be on to load the palette. */
5998 if (!crtc->enabled || !intel_crtc->active)
6001 /* use legacy palette for Ironlake */
6002 if (HAS_PCH_SPLIT(dev))
6003 palreg = LGC_PALETTE(intel_crtc->pipe);
6005 for (i = 0; i < 256; i++) {
6006 I915_WRITE(palreg + 4 * i,
6007 (intel_crtc->lut_r[i] << 16) |
6008 (intel_crtc->lut_g[i] << 8) |
6009 intel_crtc->lut_b[i]);
6013 static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
6015 struct drm_device *dev = crtc->dev;
6016 struct drm_i915_private *dev_priv = dev->dev_private;
6017 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6018 bool visible = base != 0;
6021 if (intel_crtc->cursor_visible == visible)
6024 cntl = I915_READ(_CURACNTR);
6026 /* On these chipsets we can only modify the base whilst
6027 * the cursor is disabled.
6029 I915_WRITE(_CURABASE, base);
6031 cntl &= ~(CURSOR_FORMAT_MASK);
6032 /* XXX width must be 64, stride 256 => 0x00 << 28 */
6033 cntl |= CURSOR_ENABLE |
6034 CURSOR_GAMMA_ENABLE |
6037 cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
6038 I915_WRITE(_CURACNTR, cntl);
6040 intel_crtc->cursor_visible = visible;
6043 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
6045 struct drm_device *dev = crtc->dev;
6046 struct drm_i915_private *dev_priv = dev->dev_private;
6047 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6048 int pipe = intel_crtc->pipe;
6049 bool visible = base != 0;
6051 if (intel_crtc->cursor_visible != visible) {
6052 uint32_t cntl = I915_READ(CURCNTR(pipe));
6054 cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
6055 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
6056 cntl |= pipe << 28; /* Connect to correct pipe */
6058 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
6059 cntl |= CURSOR_MODE_DISABLE;
6061 I915_WRITE(CURCNTR(pipe), cntl);
6063 intel_crtc->cursor_visible = visible;
6065 /* and commit changes on next vblank */
6066 I915_WRITE(CURBASE(pipe), base);
6069 static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
6071 struct drm_device *dev = crtc->dev;
6072 struct drm_i915_private *dev_priv = dev->dev_private;
6073 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6074 int pipe = intel_crtc->pipe;
6075 bool visible = base != 0;
6077 if (intel_crtc->cursor_visible != visible) {
6078 uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
6080 cntl &= ~CURSOR_MODE;
6081 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
6083 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
6084 cntl |= CURSOR_MODE_DISABLE;
6086 I915_WRITE(CURCNTR_IVB(pipe), cntl);
6088 intel_crtc->cursor_visible = visible;
6090 /* and commit changes on next vblank */
6091 I915_WRITE(CURBASE_IVB(pipe), base);
6094 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
6095 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
6098 struct drm_device *dev = crtc->dev;
6099 struct drm_i915_private *dev_priv = dev->dev_private;
6100 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6101 int pipe = intel_crtc->pipe;
6102 int x = intel_crtc->cursor_x;
6103 int y = intel_crtc->cursor_y;
6109 if (on && crtc->enabled && crtc->fb) {
6110 base = intel_crtc->cursor_addr;
6111 if (x > (int) crtc->fb->width)
6114 if (y > (int) crtc->fb->height)
6120 if (x + intel_crtc->cursor_width < 0)
6123 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
6126 pos |= x << CURSOR_X_SHIFT;
6129 if (y + intel_crtc->cursor_height < 0)
6132 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
6135 pos |= y << CURSOR_Y_SHIFT;
6137 visible = base != 0;
6138 if (!visible && !intel_crtc->cursor_visible)
6141 if (IS_IVYBRIDGE(dev)) {
6142 I915_WRITE(CURPOS_IVB(pipe), pos);
6143 ivb_update_cursor(crtc, base);
6145 I915_WRITE(CURPOS(pipe), pos);
6146 if (IS_845G(dev) || IS_I865G(dev))
6147 i845_update_cursor(crtc, base);
6149 i9xx_update_cursor(crtc, base);
6153 intel_mark_busy(dev, to_intel_framebuffer(crtc->fb)->obj);
6156 static int intel_crtc_cursor_set(struct drm_crtc *crtc,
6157 struct drm_file *file,
6159 uint32_t width, uint32_t height)
6161 struct drm_device *dev = crtc->dev;
6162 struct drm_i915_private *dev_priv = dev->dev_private;
6163 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6164 struct drm_i915_gem_object *obj;
6168 DRM_DEBUG_KMS("\n");
6170 /* if we want to turn off the cursor ignore width and height */
6172 DRM_DEBUG_KMS("cursor off\n");
6175 mutex_lock(&dev->struct_mutex);
6179 /* Currently we only support 64x64 cursors */
6180 if (width != 64 || height != 64) {
6181 DRM_ERROR("we currently only support 64x64 cursors\n");
6185 obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
6186 if (&obj->base == NULL)
6189 if (obj->base.size < width * height * 4) {
6190 DRM_ERROR("buffer is to small\n");
6195 /* we only need to pin inside GTT if cursor is non-phy */
6196 mutex_lock(&dev->struct_mutex);
6197 if (!dev_priv->info->cursor_needs_physical) {
6198 if (obj->tiling_mode) {
6199 DRM_ERROR("cursor cannot be tiled\n");
6204 ret = i915_gem_object_pin_to_display_plane(obj, 0, NULL);
6206 DRM_ERROR("failed to move cursor bo into the GTT\n");
6210 ret = i915_gem_object_put_fence(obj);
6212 DRM_ERROR("failed to release fence for cursor");
6216 addr = obj->gtt_offset;
6218 int align = IS_I830(dev) ? 16 * 1024 : 256;
6219 ret = i915_gem_attach_phys_object(dev, obj,
6220 (intel_crtc->pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1,
6223 DRM_ERROR("failed to attach phys object\n");
6226 addr = obj->phys_obj->handle->busaddr;
6230 I915_WRITE(CURSIZE, (height << 12) | width);
6233 if (intel_crtc->cursor_bo) {
6234 if (dev_priv->info->cursor_needs_physical) {
6235 if (intel_crtc->cursor_bo != obj)
6236 i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
6238 i915_gem_object_unpin(intel_crtc->cursor_bo);
6239 drm_gem_object_unreference(&intel_crtc->cursor_bo->base);
6242 mutex_unlock(&dev->struct_mutex);
6244 intel_crtc->cursor_addr = addr;
6245 intel_crtc->cursor_bo = obj;
6246 intel_crtc->cursor_width = width;
6247 intel_crtc->cursor_height = height;
6249 intel_crtc_update_cursor(crtc, true);
6253 i915_gem_object_unpin(obj);
6255 mutex_unlock(&dev->struct_mutex);
6257 drm_gem_object_unreference_unlocked(&obj->base);
6261 static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
6263 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6265 intel_crtc->cursor_x = x;
6266 intel_crtc->cursor_y = y;
6268 intel_crtc_update_cursor(crtc, true);
6273 /** Sets the color ramps on behalf of RandR */
6274 void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
6275 u16 blue, int regno)
6277 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6279 intel_crtc->lut_r[regno] = red >> 8;
6280 intel_crtc->lut_g[regno] = green >> 8;
6281 intel_crtc->lut_b[regno] = blue >> 8;
6284 void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
6285 u16 *blue, int regno)
6287 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6289 *red = intel_crtc->lut_r[regno] << 8;
6290 *green = intel_crtc->lut_g[regno] << 8;
6291 *blue = intel_crtc->lut_b[regno] << 8;
6294 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
6295 u16 *blue, uint32_t start, uint32_t size)
6297 int end = (start + size > 256) ? 256 : start + size, i;
6298 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6300 for (i = start; i < end; i++) {
6301 intel_crtc->lut_r[i] = red[i] >> 8;
6302 intel_crtc->lut_g[i] = green[i] >> 8;
6303 intel_crtc->lut_b[i] = blue[i] >> 8;
6306 intel_crtc_load_lut(crtc);
6310 * Get a pipe with a simple mode set on it for doing load-based monitor
6313 * It will be up to the load-detect code to adjust the pipe as appropriate for
6314 * its requirements. The pipe will be connected to no other encoders.
6316 * Currently this code will only succeed if there is a pipe with no encoders
6317 * configured for it. In the future, it could choose to temporarily disable
6318 * some outputs to free up a pipe for its use.
6320 * \return crtc, or NULL if no pipes are available.
6323 /* VESA 640x480x72Hz mode to set on the pipe */
6324 static struct drm_display_mode load_detect_mode = {
6325 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
6326 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
6329 static struct drm_framebuffer *
6330 intel_framebuffer_create(struct drm_device *dev,
6331 struct drm_mode_fb_cmd *mode_cmd,
6332 struct drm_i915_gem_object *obj)
6334 struct intel_framebuffer *intel_fb;
6337 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
6339 drm_gem_object_unreference_unlocked(&obj->base);
6340 return ERR_PTR(-ENOMEM);
6343 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
6345 drm_gem_object_unreference_unlocked(&obj->base);
6347 return ERR_PTR(ret);
6350 return &intel_fb->base;
6354 intel_framebuffer_pitch_for_width(int width, int bpp)
6356 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
6357 return ALIGN(pitch, 64);
6361 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
6363 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
6364 return ALIGN(pitch * mode->vdisplay, PAGE_SIZE);
6367 static struct drm_framebuffer *
6368 intel_framebuffer_create_for_mode(struct drm_device *dev,
6369 struct drm_display_mode *mode,
6372 struct drm_i915_gem_object *obj;
6373 struct drm_mode_fb_cmd mode_cmd;
6375 obj = i915_gem_alloc_object(dev,
6376 intel_framebuffer_size_for_mode(mode, bpp));
6378 return ERR_PTR(-ENOMEM);
6380 mode_cmd.width = mode->hdisplay;
6381 mode_cmd.height = mode->vdisplay;
6382 mode_cmd.depth = depth;
6384 mode_cmd.pitch = intel_framebuffer_pitch_for_width(mode_cmd.width, bpp);
6386 return intel_framebuffer_create(dev, &mode_cmd, obj);
6389 static struct drm_framebuffer *
6390 mode_fits_in_fbdev(struct drm_device *dev,
6391 struct drm_display_mode *mode)
6393 struct drm_i915_private *dev_priv = dev->dev_private;
6394 struct drm_i915_gem_object *obj;
6395 struct drm_framebuffer *fb;
6397 if (dev_priv->fbdev == NULL)
6400 obj = dev_priv->fbdev->ifb.obj;
6404 fb = &dev_priv->fbdev->ifb.base;
6405 if (fb->pitch < intel_framebuffer_pitch_for_width(mode->hdisplay,
6406 fb->bits_per_pixel))
6409 if (obj->base.size < mode->vdisplay * fb->pitch)
6415 bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
6416 struct drm_connector *connector,
6417 struct drm_display_mode *mode,
6418 struct intel_load_detect_pipe *old)
6420 struct intel_crtc *intel_crtc;
6421 struct drm_crtc *possible_crtc;
6422 struct drm_encoder *encoder = &intel_encoder->base;
6423 struct drm_crtc *crtc = NULL;
6424 struct drm_device *dev = encoder->dev;
6425 struct drm_framebuffer *old_fb;
6428 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
6429 connector->base.id, drm_get_connector_name(connector),
6430 encoder->base.id, drm_get_encoder_name(encoder));
6433 * Algorithm gets a little messy:
6435 * - if the connector already has an assigned crtc, use it (but make
6436 * sure it's on first)
6438 * - try to find the first unused crtc that can drive this connector,
6439 * and use that if we find one
6442 /* See if we already have a CRTC for this connector */
6443 if (encoder->crtc) {
6444 crtc = encoder->crtc;
6446 intel_crtc = to_intel_crtc(crtc);
6447 old->dpms_mode = intel_crtc->dpms_mode;
6448 old->load_detect_temp = false;
6450 /* Make sure the crtc and connector are running */
6451 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
6452 struct drm_encoder_helper_funcs *encoder_funcs;
6453 struct drm_crtc_helper_funcs *crtc_funcs;
6455 crtc_funcs = crtc->helper_private;
6456 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
6458 encoder_funcs = encoder->helper_private;
6459 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
6465 /* Find an unused one (if possible) */
6466 list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
6468 if (!(encoder->possible_crtcs & (1 << i)))
6470 if (!possible_crtc->enabled) {
6471 crtc = possible_crtc;
6477 * If we didn't find an unused CRTC, don't use any.
6480 DRM_DEBUG_KMS("no pipe available for load-detect\n");
6484 encoder->crtc = crtc;
6485 connector->encoder = encoder;
6487 intel_crtc = to_intel_crtc(crtc);
6488 old->dpms_mode = intel_crtc->dpms_mode;
6489 old->load_detect_temp = true;
6490 old->release_fb = NULL;
6493 mode = &load_detect_mode;
6497 /* We need a framebuffer large enough to accommodate all accesses
6498 * that the plane may generate whilst we perform load detection.
6499 * We can not rely on the fbcon either being present (we get called
6500 * during its initialisation to detect all boot displays, or it may
6501 * not even exist) or that it is large enough to satisfy the
6504 crtc->fb = mode_fits_in_fbdev(dev, mode);
6505 if (crtc->fb == NULL) {
6506 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
6507 crtc->fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
6508 old->release_fb = crtc->fb;
6510 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
6511 if (IS_ERR(crtc->fb)) {
6512 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
6517 if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) {
6518 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
6519 if (old->release_fb)
6520 old->release_fb->funcs->destroy(old->release_fb);
6525 /* let the connector get through one full cycle before testing */
6526 intel_wait_for_vblank(dev, intel_crtc->pipe);
6531 void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
6532 struct drm_connector *connector,
6533 struct intel_load_detect_pipe *old)
6535 struct drm_encoder *encoder = &intel_encoder->base;
6536 struct drm_device *dev = encoder->dev;
6537 struct drm_crtc *crtc = encoder->crtc;
6538 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
6539 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
6541 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
6542 connector->base.id, drm_get_connector_name(connector),
6543 encoder->base.id, drm_get_encoder_name(encoder));
6545 if (old->load_detect_temp) {
6546 connector->encoder = NULL;
6547 drm_helper_disable_unused_functions(dev);
6549 if (old->release_fb)
6550 old->release_fb->funcs->destroy(old->release_fb);
6555 /* Switch crtc and encoder back off if necessary */
6556 if (old->dpms_mode != DRM_MODE_DPMS_ON) {
6557 encoder_funcs->dpms(encoder, old->dpms_mode);
6558 crtc_funcs->dpms(crtc, old->dpms_mode);
6562 /* Returns the clock of the currently programmed mode of the given pipe. */
6563 static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
6565 struct drm_i915_private *dev_priv = dev->dev_private;
6566 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6567 int pipe = intel_crtc->pipe;
6568 u32 dpll = I915_READ(DPLL(pipe));
6570 intel_clock_t clock;
6572 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
6573 fp = I915_READ(FP0(pipe));
6575 fp = I915_READ(FP1(pipe));
6577 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
6578 if (IS_PINEVIEW(dev)) {
6579 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
6580 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
6582 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
6583 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
6586 if (!IS_GEN2(dev)) {
6587 if (IS_PINEVIEW(dev))
6588 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
6589 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
6591 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
6592 DPLL_FPA01_P1_POST_DIV_SHIFT);
6594 switch (dpll & DPLL_MODE_MASK) {
6595 case DPLLB_MODE_DAC_SERIAL:
6596 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
6599 case DPLLB_MODE_LVDS:
6600 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
6604 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
6605 "mode\n", (int)(dpll & DPLL_MODE_MASK));
6609 /* XXX: Handle the 100Mhz refclk */
6610 intel_clock(dev, 96000, &clock);
6612 bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
6615 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
6616 DPLL_FPA01_P1_POST_DIV_SHIFT);
6619 if ((dpll & PLL_REF_INPUT_MASK) ==
6620 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
6621 /* XXX: might not be 66MHz */
6622 intel_clock(dev, 66000, &clock);
6624 intel_clock(dev, 48000, &clock);
6626 if (dpll & PLL_P1_DIVIDE_BY_TWO)
6629 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
6630 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
6632 if (dpll & PLL_P2_DIVIDE_BY_4)
6637 intel_clock(dev, 48000, &clock);
6641 /* XXX: It would be nice to validate the clocks, but we can't reuse
6642 * i830PllIsValid() because it relies on the xf86_config connector
6643 * configuration being accurate, which it isn't necessarily.
6649 /** Returns the currently programmed mode of the given pipe. */
6650 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
6651 struct drm_crtc *crtc)
6653 struct drm_i915_private *dev_priv = dev->dev_private;
6654 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6655 int pipe = intel_crtc->pipe;
6656 struct drm_display_mode *mode;
6657 int htot = I915_READ(HTOTAL(pipe));
6658 int hsync = I915_READ(HSYNC(pipe));
6659 int vtot = I915_READ(VTOTAL(pipe));
6660 int vsync = I915_READ(VSYNC(pipe));
6662 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
6666 mode->clock = intel_crtc_clock_get(dev, crtc);
6667 mode->hdisplay = (htot & 0xffff) + 1;
6668 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
6669 mode->hsync_start = (hsync & 0xffff) + 1;
6670 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
6671 mode->vdisplay = (vtot & 0xffff) + 1;
6672 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
6673 mode->vsync_start = (vsync & 0xffff) + 1;
6674 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
6676 drm_mode_set_name(mode);
6677 drm_mode_set_crtcinfo(mode, 0);
6682 #define GPU_IDLE_TIMEOUT 500 /* ms */
6684 /* When this timer fires, we've been idle for awhile */
6685 static void intel_gpu_idle_timer(unsigned long arg)
6687 struct drm_device *dev = (struct drm_device *)arg;
6688 drm_i915_private_t *dev_priv = dev->dev_private;
6690 if (!list_empty(&dev_priv->mm.active_list)) {
6691 /* Still processing requests, so just re-arm the timer. */
6692 mod_timer(&dev_priv->idle_timer, jiffies +
6693 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
6697 dev_priv->busy = false;
6698 queue_work(dev_priv->wq, &dev_priv->idle_work);
6701 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
6703 static void intel_crtc_idle_timer(unsigned long arg)
6705 struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
6706 struct drm_crtc *crtc = &intel_crtc->base;
6707 drm_i915_private_t *dev_priv = crtc->dev->dev_private;
6708 struct intel_framebuffer *intel_fb;
6710 intel_fb = to_intel_framebuffer(crtc->fb);
6711 if (intel_fb && intel_fb->obj->active) {
6712 /* The framebuffer is still being accessed by the GPU. */
6713 mod_timer(&intel_crtc->idle_timer, jiffies +
6714 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
6718 intel_crtc->busy = false;
6719 queue_work(dev_priv->wq, &dev_priv->idle_work);
6722 static void intel_increase_pllclock(struct drm_crtc *crtc)
6724 struct drm_device *dev = crtc->dev;
6725 drm_i915_private_t *dev_priv = dev->dev_private;
6726 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6727 int pipe = intel_crtc->pipe;
6728 int dpll_reg = DPLL(pipe);
6731 if (HAS_PCH_SPLIT(dev))
6734 if (!dev_priv->lvds_downclock_avail)
6737 dpll = I915_READ(dpll_reg);
6738 if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
6739 DRM_DEBUG_DRIVER("upclocking LVDS\n");
6741 /* Unlock panel regs */
6742 I915_WRITE(PP_CONTROL,
6743 I915_READ(PP_CONTROL) | PANEL_UNLOCK_REGS);
6745 dpll &= ~DISPLAY_RATE_SELECT_FPA1;
6746 I915_WRITE(dpll_reg, dpll);
6747 intel_wait_for_vblank(dev, pipe);
6749 dpll = I915_READ(dpll_reg);
6750 if (dpll & DISPLAY_RATE_SELECT_FPA1)
6751 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
6753 /* ...and lock them again */
6754 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
6757 /* Schedule downclock */
6758 mod_timer(&intel_crtc->idle_timer, jiffies +
6759 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
6762 static void intel_decrease_pllclock(struct drm_crtc *crtc)
6764 struct drm_device *dev = crtc->dev;
6765 drm_i915_private_t *dev_priv = dev->dev_private;
6766 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6767 int pipe = intel_crtc->pipe;
6768 int dpll_reg = DPLL(pipe);
6769 int dpll = I915_READ(dpll_reg);
6771 if (HAS_PCH_SPLIT(dev))
6774 if (!dev_priv->lvds_downclock_avail)
6778 * Since this is called by a timer, we should never get here in
6781 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
6782 DRM_DEBUG_DRIVER("downclocking LVDS\n");
6784 /* Unlock panel regs */
6785 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) |
6788 dpll |= DISPLAY_RATE_SELECT_FPA1;
6789 I915_WRITE(dpll_reg, dpll);
6790 intel_wait_for_vblank(dev, pipe);
6791 dpll = I915_READ(dpll_reg);
6792 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
6793 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
6795 /* ...and lock them again */
6796 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
6802 * intel_idle_update - adjust clocks for idleness
6803 * @work: work struct
6805 * Either the GPU or display (or both) went idle. Check the busy status
6806 * here and adjust the CRTC and GPU clocks as necessary.
6808 static void intel_idle_update(struct work_struct *work)
6810 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
6812 struct drm_device *dev = dev_priv->dev;
6813 struct drm_crtc *crtc;
6814 struct intel_crtc *intel_crtc;
6816 if (!i915_powersave)
6819 mutex_lock(&dev->struct_mutex);
6821 i915_update_gfx_val(dev_priv);
6823 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
6824 /* Skip inactive CRTCs */
6828 intel_crtc = to_intel_crtc(crtc);
6829 if (!intel_crtc->busy)
6830 intel_decrease_pllclock(crtc);
6834 mutex_unlock(&dev->struct_mutex);
6838 * intel_mark_busy - mark the GPU and possibly the display busy
6840 * @obj: object we're operating on
6842 * Callers can use this function to indicate that the GPU is busy processing
6843 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
6844 * buffer), we'll also mark the display as busy, so we know to increase its
6847 void intel_mark_busy(struct drm_device *dev, struct drm_i915_gem_object *obj)
6849 drm_i915_private_t *dev_priv = dev->dev_private;
6850 struct drm_crtc *crtc = NULL;
6851 struct intel_framebuffer *intel_fb;
6852 struct intel_crtc *intel_crtc;
6854 if (!drm_core_check_feature(dev, DRIVER_MODESET))
6857 if (!dev_priv->busy)
6858 dev_priv->busy = true;
6860 mod_timer(&dev_priv->idle_timer, jiffies +
6861 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
6863 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
6867 intel_crtc = to_intel_crtc(crtc);
6868 intel_fb = to_intel_framebuffer(crtc->fb);
6869 if (intel_fb->obj == obj) {
6870 if (!intel_crtc->busy) {
6871 /* Non-busy -> busy, upclock */
6872 intel_increase_pllclock(crtc);
6873 intel_crtc->busy = true;
6875 /* Busy -> busy, put off timer */
6876 mod_timer(&intel_crtc->idle_timer, jiffies +
6877 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
6883 static void intel_crtc_destroy(struct drm_crtc *crtc)
6885 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6886 struct drm_device *dev = crtc->dev;
6887 struct intel_unpin_work *work;
6888 unsigned long flags;
6890 spin_lock_irqsave(&dev->event_lock, flags);
6891 work = intel_crtc->unpin_work;
6892 intel_crtc->unpin_work = NULL;
6893 spin_unlock_irqrestore(&dev->event_lock, flags);
6896 cancel_work_sync(&work->work);
6900 drm_crtc_cleanup(crtc);
6905 static void intel_unpin_work_fn(struct work_struct *__work)
6907 struct intel_unpin_work *work =
6908 container_of(__work, struct intel_unpin_work, work);
6910 mutex_lock(&work->dev->struct_mutex);
6911 i915_gem_object_unpin(work->old_fb_obj);
6912 drm_gem_object_unreference(&work->pending_flip_obj->base);
6913 drm_gem_object_unreference(&work->old_fb_obj->base);
6915 intel_update_fbc(work->dev);
6916 mutex_unlock(&work->dev->struct_mutex);
6920 static void do_intel_finish_page_flip(struct drm_device *dev,
6921 struct drm_crtc *crtc)
6923 drm_i915_private_t *dev_priv = dev->dev_private;
6924 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6925 struct intel_unpin_work *work;
6926 struct drm_i915_gem_object *obj;
6927 struct drm_pending_vblank_event *e;
6928 struct timeval tnow, tvbl;
6929 unsigned long flags;
6931 /* Ignore early vblank irqs */
6932 if (intel_crtc == NULL)
6935 do_gettimeofday(&tnow);
6937 spin_lock_irqsave(&dev->event_lock, flags);
6938 work = intel_crtc->unpin_work;
6940 /* Ensure we don't miss a work->pending update ... */
6943 if (work == NULL || atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
6944 spin_unlock_irqrestore(&dev->event_lock, flags);
6948 /* and that the unpin work is consistent wrt ->pending. */
6951 intel_crtc->unpin_work = NULL;
6955 e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl);
6957 /* Called before vblank count and timestamps have
6958 * been updated for the vblank interval of flip
6959 * completion? Need to increment vblank count and
6960 * add one videorefresh duration to returned timestamp
6961 * to account for this. We assume this happened if we
6962 * get called over 0.9 frame durations after the last
6963 * timestamped vblank.
6965 * This calculation can not be used with vrefresh rates
6966 * below 5Hz (10Hz to be on the safe side) without
6967 * promoting to 64 integers.
6969 if (10 * (timeval_to_ns(&tnow) - timeval_to_ns(&tvbl)) >
6970 9 * crtc->framedur_ns) {
6971 e->event.sequence++;
6972 tvbl = ns_to_timeval(timeval_to_ns(&tvbl) +
6976 e->event.tv_sec = tvbl.tv_sec;
6977 e->event.tv_usec = tvbl.tv_usec;
6979 list_add_tail(&e->base.link,
6980 &e->base.file_priv->event_list);
6981 wake_up_interruptible(&e->base.file_priv->event_wait);
6984 drm_vblank_put(dev, intel_crtc->pipe);
6986 spin_unlock_irqrestore(&dev->event_lock, flags);
6988 obj = work->old_fb_obj;
6990 atomic_clear_mask(1 << intel_crtc->plane,
6991 &obj->pending_flip.counter);
6993 wake_up(&dev_priv->pending_flip_queue);
6994 schedule_work(&work->work);
6996 trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
6999 void intel_finish_page_flip(struct drm_device *dev, int pipe)
7001 drm_i915_private_t *dev_priv = dev->dev_private;
7002 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
7004 do_intel_finish_page_flip(dev, crtc);
7007 void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
7009 drm_i915_private_t *dev_priv = dev->dev_private;
7010 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
7012 do_intel_finish_page_flip(dev, crtc);
7015 void intel_prepare_page_flip(struct drm_device *dev, int plane)
7017 drm_i915_private_t *dev_priv = dev->dev_private;
7018 struct intel_crtc *intel_crtc =
7019 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
7020 unsigned long flags;
7022 /* NB: An MMIO update of the plane base pointer will also
7023 * generate a page-flip completion irq, i.e. every modeset
7024 * is also accompanied by a spurious intel_prepare_page_flip().
7026 spin_lock_irqsave(&dev->event_lock, flags);
7027 if (intel_crtc->unpin_work)
7028 atomic_inc_not_zero(&intel_crtc->unpin_work->pending);
7029 spin_unlock_irqrestore(&dev->event_lock, flags);
7032 inline static void intel_mark_page_flip_active(struct intel_crtc *intel_crtc)
7034 /* Ensure that the work item is consistent when activating it ... */
7036 atomic_set(&intel_crtc->unpin_work->pending, INTEL_FLIP_PENDING);
7037 /* and that it is marked active as soon as the irq could fire. */
7041 static int intel_gen2_queue_flip(struct drm_device *dev,
7042 struct drm_crtc *crtc,
7043 struct drm_framebuffer *fb,
7044 struct drm_i915_gem_object *obj)
7046 struct drm_i915_private *dev_priv = dev->dev_private;
7047 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7048 unsigned long offset;
7052 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
7056 /* Offset into the new buffer for cases of shared fbs between CRTCs */
7057 offset = crtc->y * fb->pitch + crtc->x * fb->bits_per_pixel/8;
7059 ret = BEGIN_LP_RING(6);
7063 /* Can't queue multiple flips, so wait for the previous
7064 * one to finish before executing the next.
7066 if (intel_crtc->plane)
7067 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
7069 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
7070 OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
7072 OUT_RING(MI_DISPLAY_FLIP |
7073 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
7074 OUT_RING(fb->pitch);
7075 OUT_RING(obj->gtt_offset + offset);
7078 intel_mark_page_flip_active(intel_crtc);
7083 i915_gem_object_unpin(obj);
7088 static int intel_gen3_queue_flip(struct drm_device *dev,
7089 struct drm_crtc *crtc,
7090 struct drm_framebuffer *fb,
7091 struct drm_i915_gem_object *obj)
7093 struct drm_i915_private *dev_priv = dev->dev_private;
7094 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7095 unsigned long offset;
7099 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
7103 /* Offset into the new buffer for cases of shared fbs between CRTCs */
7104 offset = crtc->y * fb->pitch + crtc->x * fb->bits_per_pixel/8;
7106 ret = BEGIN_LP_RING(6);
7110 if (intel_crtc->plane)
7111 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
7113 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
7114 OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
7116 OUT_RING(MI_DISPLAY_FLIP_I915 |
7117 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
7118 OUT_RING(fb->pitch);
7119 OUT_RING(obj->gtt_offset + offset);
7122 intel_mark_page_flip_active(intel_crtc);
7127 i915_gem_object_unpin(obj);
7132 static int intel_gen4_queue_flip(struct drm_device *dev,
7133 struct drm_crtc *crtc,
7134 struct drm_framebuffer *fb,
7135 struct drm_i915_gem_object *obj)
7137 struct drm_i915_private *dev_priv = dev->dev_private;
7138 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7139 uint32_t pf, pipesrc;
7142 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
7146 ret = BEGIN_LP_RING(4);
7150 /* i965+ uses the linear or tiled offsets from the
7151 * Display Registers (which do not change across a page-flip)
7152 * so we need only reprogram the base address.
7154 OUT_RING(MI_DISPLAY_FLIP |
7155 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
7156 OUT_RING(fb->pitch);
7157 OUT_RING(obj->gtt_offset | obj->tiling_mode);
7159 /* XXX Enabling the panel-fitter across page-flip is so far
7160 * untested on non-native modes, so ignore it for now.
7161 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
7164 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
7165 OUT_RING(pf | pipesrc);
7167 intel_mark_page_flip_active(intel_crtc);
7172 i915_gem_object_unpin(obj);
7177 static int intel_gen6_queue_flip(struct drm_device *dev,
7178 struct drm_crtc *crtc,
7179 struct drm_framebuffer *fb,
7180 struct drm_i915_gem_object *obj)
7182 struct drm_i915_private *dev_priv = dev->dev_private;
7183 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7184 uint32_t pf, pipesrc;
7187 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
7191 ret = BEGIN_LP_RING(4);
7195 OUT_RING(MI_DISPLAY_FLIP |
7196 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
7197 OUT_RING(fb->pitch | obj->tiling_mode);
7198 OUT_RING(obj->gtt_offset);
7200 pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
7201 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
7202 OUT_RING(pf | pipesrc);
7204 intel_mark_page_flip_active(intel_crtc);
7209 i915_gem_object_unpin(obj);
7215 * On gen7 we currently use the blit ring because (in early silicon at least)
7216 * the render ring doesn't give us interrpts for page flip completion, which
7217 * means clients will hang after the first flip is queued. Fortunately the
7218 * blit ring generates interrupts properly, so use it instead.
7220 static int intel_gen7_queue_flip(struct drm_device *dev,
7221 struct drm_crtc *crtc,
7222 struct drm_framebuffer *fb,
7223 struct drm_i915_gem_object *obj)
7225 struct drm_i915_private *dev_priv = dev->dev_private;
7226 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7227 struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
7228 uint32_t plane_bit = 0;
7231 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
7235 switch(intel_crtc->plane) {
7237 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_A;
7240 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_B;
7243 plane_bit = MI_DISPLAY_FLIP_IVB_PLANE_C;
7246 WARN_ONCE(1, "unknown plane in flip command\n");
7251 ret = intel_ring_begin(ring, 4);
7255 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | plane_bit);
7256 intel_ring_emit(ring, (fb->pitch | obj->tiling_mode));
7257 intel_ring_emit(ring, (obj->gtt_offset));
7258 intel_ring_emit(ring, (MI_NOOP));
7260 intel_mark_page_flip_active(intel_crtc);
7261 intel_ring_advance(ring);
7265 i915_gem_object_unpin(obj);
7270 static int intel_default_queue_flip(struct drm_device *dev,
7271 struct drm_crtc *crtc,
7272 struct drm_framebuffer *fb,
7273 struct drm_i915_gem_object *obj)
7278 static int intel_crtc_page_flip(struct drm_crtc *crtc,
7279 struct drm_framebuffer *fb,
7280 struct drm_pending_vblank_event *event)
7282 struct drm_device *dev = crtc->dev;
7283 struct drm_i915_private *dev_priv = dev->dev_private;
7284 struct drm_framebuffer *old_fb = crtc->fb;
7285 struct drm_i915_gem_object *obj = to_intel_framebuffer(fb)->obj;
7286 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7287 struct intel_unpin_work *work;
7288 unsigned long flags;
7291 work = kzalloc(sizeof *work, GFP_KERNEL);
7295 work->event = event;
7296 work->dev = crtc->dev;
7297 work->old_fb_obj = to_intel_framebuffer(old_fb)->obj;
7298 INIT_WORK(&work->work, intel_unpin_work_fn);
7300 ret = drm_vblank_get(dev, intel_crtc->pipe);
7304 /* We borrow the event spin lock for protecting unpin_work */
7305 spin_lock_irqsave(&dev->event_lock, flags);
7306 if (intel_crtc->unpin_work) {
7307 spin_unlock_irqrestore(&dev->event_lock, flags);
7309 drm_vblank_put(dev, intel_crtc->pipe);
7311 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
7314 intel_crtc->unpin_work = work;
7315 spin_unlock_irqrestore(&dev->event_lock, flags);
7317 mutex_lock(&dev->struct_mutex);
7319 /* Reference the objects for the scheduled work. */
7320 drm_gem_object_reference(&work->old_fb_obj->base);
7321 drm_gem_object_reference(&obj->base);
7325 work->pending_flip_obj = obj;
7327 work->enable_stall_check = true;
7329 /* Block clients from rendering to the new back buffer until
7330 * the flip occurs and the object is no longer visible.
7332 atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
7334 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
7336 goto cleanup_pending;
7338 intel_disable_fbc(dev);
7339 mutex_unlock(&dev->struct_mutex);
7341 trace_i915_flip_request(intel_crtc->plane, obj);
7346 atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
7348 drm_gem_object_unreference(&work->old_fb_obj->base);
7349 drm_gem_object_unreference(&obj->base);
7350 mutex_unlock(&dev->struct_mutex);
7352 spin_lock_irqsave(&dev->event_lock, flags);
7353 intel_crtc->unpin_work = NULL;
7354 spin_unlock_irqrestore(&dev->event_lock, flags);
7356 drm_vblank_put(dev, intel_crtc->pipe);
7363 static void intel_sanitize_modesetting(struct drm_device *dev,
7364 int pipe, int plane)
7366 struct drm_i915_private *dev_priv = dev->dev_private;
7370 /* Clear any frame start delays used for debugging left by the BIOS */
7373 I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
7376 if (HAS_PCH_SPLIT(dev))
7379 /* Who knows what state these registers were left in by the BIOS or
7382 * If we leave the registers in a conflicting state (e.g. with the
7383 * display plane reading from the other pipe than the one we intend
7384 * to use) then when we attempt to teardown the active mode, we will
7385 * not disable the pipes and planes in the correct order -- leaving
7386 * a plane reading from a disabled pipe and possibly leading to
7387 * undefined behaviour.
7390 reg = DSPCNTR(plane);
7391 val = I915_READ(reg);
7393 if ((val & DISPLAY_PLANE_ENABLE) == 0)
7395 if (!!(val & DISPPLANE_SEL_PIPE_MASK) == pipe)
7398 /* This display plane is active and attached to the other CPU pipe. */
7401 /* Disable the plane and wait for it to stop reading from the pipe. */
7402 intel_disable_plane(dev_priv, plane, pipe);
7403 intel_disable_pipe(dev_priv, pipe);
7406 static void intel_crtc_reset(struct drm_crtc *crtc)
7408 struct drm_device *dev = crtc->dev;
7409 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
7411 /* Reset flags back to the 'unknown' status so that they
7412 * will be correctly set on the initial modeset.
7414 intel_crtc->dpms_mode = -1;
7416 /* We need to fix up any BIOS configuration that conflicts with
7419 intel_sanitize_modesetting(dev, intel_crtc->pipe, intel_crtc->plane);
7422 static struct drm_crtc_helper_funcs intel_helper_funcs = {
7423 .dpms = intel_crtc_dpms,
7424 .mode_fixup = intel_crtc_mode_fixup,
7425 .mode_set = intel_crtc_mode_set,
7426 .mode_set_base = intel_pipe_set_base,
7427 .mode_set_base_atomic = intel_pipe_set_base_atomic,
7428 .load_lut = intel_crtc_load_lut,
7429 .disable = intel_crtc_disable,
7432 static const struct drm_crtc_funcs intel_crtc_funcs = {
7433 .reset = intel_crtc_reset,
7434 .cursor_set = intel_crtc_cursor_set,
7435 .cursor_move = intel_crtc_cursor_move,
7436 .gamma_set = intel_crtc_gamma_set,
7437 .set_config = drm_crtc_helper_set_config,
7438 .destroy = intel_crtc_destroy,
7439 .page_flip = intel_crtc_page_flip,
7442 static void intel_crtc_init(struct drm_device *dev, int pipe)
7444 drm_i915_private_t *dev_priv = dev->dev_private;
7445 struct intel_crtc *intel_crtc;
7448 intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
7449 if (intel_crtc == NULL)
7452 drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
7454 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
7455 for (i = 0; i < 256; i++) {
7456 intel_crtc->lut_r[i] = i;
7457 intel_crtc->lut_g[i] = i;
7458 intel_crtc->lut_b[i] = i;
7461 /* Swap pipes & planes for FBC on pre-965 */
7462 intel_crtc->pipe = pipe;
7463 intel_crtc->plane = pipe;
7464 if (IS_MOBILE(dev) && IS_GEN3(dev)) {
7465 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
7466 intel_crtc->plane = !pipe;
7469 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
7470 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
7471 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
7472 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
7474 intel_crtc_reset(&intel_crtc->base);
7475 intel_crtc->active = true; /* force the pipe off on setup_init_config */
7476 intel_crtc->bpp = 24; /* default for pre-Ironlake */
7478 if (HAS_PCH_SPLIT(dev)) {
7479 if (pipe == 2 && IS_IVYBRIDGE(dev))
7480 intel_crtc->no_pll = true;
7481 intel_helper_funcs.prepare = ironlake_crtc_prepare;
7482 intel_helper_funcs.commit = ironlake_crtc_commit;
7484 intel_helper_funcs.prepare = i9xx_crtc_prepare;
7485 intel_helper_funcs.commit = i9xx_crtc_commit;
7488 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
7490 intel_crtc->busy = false;
7492 setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
7493 (unsigned long)intel_crtc);
7496 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
7497 struct drm_file *file)
7499 drm_i915_private_t *dev_priv = dev->dev_private;
7500 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
7501 struct drm_mode_object *drmmode_obj;
7502 struct intel_crtc *crtc;
7505 DRM_ERROR("called with no initialization\n");
7509 drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
7510 DRM_MODE_OBJECT_CRTC);
7513 DRM_ERROR("no such CRTC id\n");
7517 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
7518 pipe_from_crtc_id->pipe = crtc->pipe;
7523 static int intel_encoder_clones(struct drm_device *dev, int type_mask)
7525 struct intel_encoder *encoder;
7529 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
7530 if (type_mask & encoder->clone_mask)
7531 index_mask |= (1 << entry);
7538 static bool has_edp_a(struct drm_device *dev)
7540 struct drm_i915_private *dev_priv = dev->dev_private;
7542 if (!IS_MOBILE(dev))
7545 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
7549 (I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE))
7555 static void intel_setup_outputs(struct drm_device *dev)
7557 struct drm_i915_private *dev_priv = dev->dev_private;
7558 struct intel_encoder *encoder;
7559 bool dpd_is_edp = false;
7560 bool has_lvds = false;
7562 if (IS_MOBILE(dev) && !IS_I830(dev))
7563 has_lvds = intel_lvds_init(dev);
7564 if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
7565 /* disable the panel fitter on everything but LVDS */
7566 I915_WRITE(PFIT_CONTROL, 0);
7569 if (HAS_PCH_SPLIT(dev)) {
7570 dpd_is_edp = intel_dpd_is_edp(dev);
7573 intel_dp_init(dev, DP_A);
7575 if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
7576 intel_dp_init(dev, PCH_DP_D);
7579 intel_crt_init(dev);
7581 if (HAS_PCH_SPLIT(dev)) {
7584 if (I915_READ(HDMIB) & PORT_DETECTED) {
7585 /* PCH SDVOB multiplex with HDMIB */
7586 found = intel_sdvo_init(dev, PCH_SDVOB);
7588 intel_hdmi_init(dev, HDMIB);
7589 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
7590 intel_dp_init(dev, PCH_DP_B);
7593 if (I915_READ(HDMIC) & PORT_DETECTED)
7594 intel_hdmi_init(dev, HDMIC);
7596 if (I915_READ(HDMID) & PORT_DETECTED)
7597 intel_hdmi_init(dev, HDMID);
7599 if (I915_READ(PCH_DP_C) & DP_DETECTED)
7600 intel_dp_init(dev, PCH_DP_C);
7602 if (!dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
7603 intel_dp_init(dev, PCH_DP_D);
7605 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
7608 if (I915_READ(SDVOB) & SDVO_DETECTED) {
7609 DRM_DEBUG_KMS("probing SDVOB\n");
7610 found = intel_sdvo_init(dev, SDVOB);
7611 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
7612 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
7613 intel_hdmi_init(dev, SDVOB);
7616 if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
7617 DRM_DEBUG_KMS("probing DP_B\n");
7618 intel_dp_init(dev, DP_B);
7622 /* Before G4X SDVOC doesn't have its own detect register */
7624 if (I915_READ(SDVOB) & SDVO_DETECTED) {
7625 DRM_DEBUG_KMS("probing SDVOC\n");
7626 found = intel_sdvo_init(dev, SDVOC);
7629 if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
7631 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
7632 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
7633 intel_hdmi_init(dev, SDVOC);
7635 if (SUPPORTS_INTEGRATED_DP(dev)) {
7636 DRM_DEBUG_KMS("probing DP_C\n");
7637 intel_dp_init(dev, DP_C);
7641 if (SUPPORTS_INTEGRATED_DP(dev) &&
7642 (I915_READ(DP_D) & DP_DETECTED)) {
7643 DRM_DEBUG_KMS("probing DP_D\n");
7644 intel_dp_init(dev, DP_D);
7646 } else if (IS_GEN2(dev))
7647 intel_dvo_init(dev);
7649 if (SUPPORTS_TV(dev))
7652 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
7653 encoder->base.possible_crtcs = encoder->crtc_mask;
7654 encoder->base.possible_clones =
7655 intel_encoder_clones(dev, encoder->clone_mask);
7658 /* disable all the possible outputs/crtcs before entering KMS mode */
7659 drm_helper_disable_unused_functions(dev);
7661 if (HAS_PCH_SPLIT(dev))
7662 ironlake_init_pch_refclk(dev);
7665 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
7667 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
7669 drm_framebuffer_cleanup(fb);
7670 drm_gem_object_unreference_unlocked(&intel_fb->obj->base);
7675 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
7676 struct drm_file *file,
7677 unsigned int *handle)
7679 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
7680 struct drm_i915_gem_object *obj = intel_fb->obj;
7682 return drm_gem_handle_create(file, &obj->base, handle);
7685 static const struct drm_framebuffer_funcs intel_fb_funcs = {
7686 .destroy = intel_user_framebuffer_destroy,
7687 .create_handle = intel_user_framebuffer_create_handle,
7690 int intel_framebuffer_init(struct drm_device *dev,
7691 struct intel_framebuffer *intel_fb,
7692 struct drm_mode_fb_cmd *mode_cmd,
7693 struct drm_i915_gem_object *obj)
7697 if (obj->tiling_mode == I915_TILING_Y)
7700 if (mode_cmd->pitch & 63)
7703 switch (mode_cmd->bpp) {
7706 /* Only pre-ILK can handle 5:5:5 */
7707 if (mode_cmd->depth == 15 && !HAS_PCH_SPLIT(dev))
7718 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
7720 DRM_ERROR("framebuffer init failed %d\n", ret);
7724 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
7725 intel_fb->obj = obj;
7729 static struct drm_framebuffer *
7730 intel_user_framebuffer_create(struct drm_device *dev,
7731 struct drm_file *filp,
7732 struct drm_mode_fb_cmd *mode_cmd)
7734 struct drm_i915_gem_object *obj;
7736 obj = to_intel_bo(drm_gem_object_lookup(dev, filp, mode_cmd->handle));
7737 if (&obj->base == NULL)
7738 return ERR_PTR(-ENOENT);
7740 return intel_framebuffer_create(dev, mode_cmd, obj);
7743 static const struct drm_mode_config_funcs intel_mode_funcs = {
7744 .fb_create = intel_user_framebuffer_create,
7745 .output_poll_changed = intel_fb_output_poll_changed,
7748 static struct drm_i915_gem_object *
7749 intel_alloc_context_page(struct drm_device *dev)
7751 struct drm_i915_gem_object *ctx;
7754 WARN_ON(!mutex_is_locked(&dev->struct_mutex));
7756 ctx = i915_gem_alloc_object(dev, 4096);
7758 DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
7762 ret = i915_gem_object_pin(ctx, 4096, true);
7764 DRM_ERROR("failed to pin power context: %d\n", ret);
7768 ret = i915_gem_object_set_to_gtt_domain(ctx, 1);
7770 DRM_ERROR("failed to set-domain on power context: %d\n", ret);
7777 i915_gem_object_unpin(ctx);
7779 drm_gem_object_unreference(&ctx->base);
7780 mutex_unlock(&dev->struct_mutex);
7784 bool ironlake_set_drps(struct drm_device *dev, u8 val)
7786 struct drm_i915_private *dev_priv = dev->dev_private;
7789 rgvswctl = I915_READ16(MEMSWCTL);
7790 if (rgvswctl & MEMCTL_CMD_STS) {
7791 DRM_DEBUG("gpu busy, RCS change rejected\n");
7792 return false; /* still busy with another command */
7795 rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
7796 (val << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
7797 I915_WRITE16(MEMSWCTL, rgvswctl);
7798 POSTING_READ16(MEMSWCTL);
7800 rgvswctl |= MEMCTL_CMD_STS;
7801 I915_WRITE16(MEMSWCTL, rgvswctl);
7806 void ironlake_enable_drps(struct drm_device *dev)
7808 struct drm_i915_private *dev_priv = dev->dev_private;
7809 u32 rgvmodectl = I915_READ(MEMMODECTL);
7810 u8 fmax, fmin, fstart, vstart;
7812 /* Enable temp reporting */
7813 I915_WRITE16(PMMISC, I915_READ(PMMISC) | MCPPCE_EN);
7814 I915_WRITE16(TSC1, I915_READ(TSC1) | TSE);
7816 /* 100ms RC evaluation intervals */
7817 I915_WRITE(RCUPEI, 100000);
7818 I915_WRITE(RCDNEI, 100000);
7820 /* Set max/min thresholds to 90ms and 80ms respectively */
7821 I915_WRITE(RCBMAXAVG, 90000);
7822 I915_WRITE(RCBMINAVG, 80000);
7824 I915_WRITE(MEMIHYST, 1);
7826 /* Set up min, max, and cur for interrupt handling */
7827 fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
7828 fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
7829 fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
7830 MEMMODE_FSTART_SHIFT;
7832 vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >>
7835 dev_priv->fmax = fmax; /* IPS callback will increase this */
7836 dev_priv->fstart = fstart;
7838 dev_priv->max_delay = fstart;
7839 dev_priv->min_delay = fmin;
7840 dev_priv->cur_delay = fstart;
7842 DRM_DEBUG_DRIVER("fmax: %d, fmin: %d, fstart: %d\n",
7843 fmax, fmin, fstart);
7845 I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
7848 * Interrupts will be enabled in ironlake_irq_postinstall
7851 I915_WRITE(VIDSTART, vstart);
7852 POSTING_READ(VIDSTART);
7854 rgvmodectl |= MEMMODE_SWMODE_EN;
7855 I915_WRITE(MEMMODECTL, rgvmodectl);
7857 if (wait_for((I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) == 0, 10))
7858 DRM_ERROR("stuck trying to change perf mode\n");
7861 ironlake_set_drps(dev, fstart);
7863 dev_priv->last_count1 = I915_READ(0x112e4) + I915_READ(0x112e8) +
7865 dev_priv->last_time1 = jiffies_to_msecs(jiffies);
7866 dev_priv->last_count2 = I915_READ(0x112f4);
7867 getrawmonotonic(&dev_priv->last_time2);
7870 void ironlake_disable_drps(struct drm_device *dev)
7872 struct drm_i915_private *dev_priv = dev->dev_private;
7873 u16 rgvswctl = I915_READ16(MEMSWCTL);
7875 /* Ack interrupts, disable EFC interrupt */
7876 I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN);
7877 I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG);
7878 I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT);
7879 I915_WRITE(DEIIR, DE_PCU_EVENT);
7880 I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT);
7882 /* Go back to the starting frequency */
7883 ironlake_set_drps(dev, dev_priv->fstart);
7885 rgvswctl |= MEMCTL_CMD_STS;
7886 I915_WRITE(MEMSWCTL, rgvswctl);
7891 void gen6_set_rps(struct drm_device *dev, u8 val)
7893 struct drm_i915_private *dev_priv = dev->dev_private;
7896 swreq = (val & 0x3ff) << 25;
7897 I915_WRITE(GEN6_RPNSWREQ, swreq);
7900 void gen6_disable_rps(struct drm_device *dev)
7902 struct drm_i915_private *dev_priv = dev->dev_private;
7904 I915_WRITE(GEN6_RPNSWREQ, 1 << 31);
7905 I915_WRITE(GEN6_PMINTRMSK, 0xffffffff);
7906 I915_WRITE(GEN6_PMIER, 0);
7907 /* Complete PM interrupt masking here doesn't race with the rps work
7908 * item again unmasking PM interrupts because that is using a different
7909 * register (PMIMR) to mask PM interrupts. The only risk is in leaving
7910 * stale bits in PMIIR and PMIMR which gen6_enable_rps will clean up. */
7912 spin_lock_irq(&dev_priv->rps_lock);
7913 dev_priv->pm_iir = 0;
7914 spin_unlock_irq(&dev_priv->rps_lock);
7916 I915_WRITE(GEN6_PMIIR, I915_READ(GEN6_PMIIR));
7919 static unsigned long intel_pxfreq(u32 vidfreq)
7922 int div = (vidfreq & 0x3f0000) >> 16;
7923 int post = (vidfreq & 0x3000) >> 12;
7924 int pre = (vidfreq & 0x7);
7929 freq = ((div * 133333) / ((1<<post) * pre));
7934 void intel_init_emon(struct drm_device *dev)
7936 struct drm_i915_private *dev_priv = dev->dev_private;
7941 /* Disable to program */
7945 /* Program energy weights for various events */
7946 I915_WRITE(SDEW, 0x15040d00);
7947 I915_WRITE(CSIEW0, 0x007f0000);
7948 I915_WRITE(CSIEW1, 0x1e220004);
7949 I915_WRITE(CSIEW2, 0x04000004);
7951 for (i = 0; i < 5; i++)
7952 I915_WRITE(PEW + (i * 4), 0);
7953 for (i = 0; i < 3; i++)
7954 I915_WRITE(DEW + (i * 4), 0);
7956 /* Program P-state weights to account for frequency power adjustment */
7957 for (i = 0; i < 16; i++) {
7958 u32 pxvidfreq = I915_READ(PXVFREQ_BASE + (i * 4));
7959 unsigned long freq = intel_pxfreq(pxvidfreq);
7960 unsigned long vid = (pxvidfreq & PXVFREQ_PX_MASK) >>
7965 val *= (freq / 1000);
7967 val /= (127*127*900);
7969 DRM_ERROR("bad pxval: %ld\n", val);
7972 /* Render standby states get 0 weight */
7976 for (i = 0; i < 4; i++) {
7977 u32 val = (pxw[i*4] << 24) | (pxw[(i*4)+1] << 16) |
7978 (pxw[(i*4)+2] << 8) | (pxw[(i*4)+3]);
7979 I915_WRITE(PXW + (i * 4), val);
7982 /* Adjust magic regs to magic values (more experimental results) */
7983 I915_WRITE(OGW0, 0);
7984 I915_WRITE(OGW1, 0);
7985 I915_WRITE(EG0, 0x00007f00);
7986 I915_WRITE(EG1, 0x0000000e);
7987 I915_WRITE(EG2, 0x000e0000);
7988 I915_WRITE(EG3, 0x68000300);
7989 I915_WRITE(EG4, 0x42000000);
7990 I915_WRITE(EG5, 0x00140031);
7994 for (i = 0; i < 8; i++)
7995 I915_WRITE(PXWL + (i * 4), 0);
7997 /* Enable PMON + select events */
7998 I915_WRITE(ECR, 0x80000019);
8000 lcfuse = I915_READ(LCFUSE02);
8002 dev_priv->corr = (lcfuse & LCFUSE_HIV_MASK);
8005 static bool intel_enable_rc6(struct drm_device *dev)
8008 * Respect the kernel parameter if it is set
8010 if (i915_enable_rc6 >= 0)
8011 return i915_enable_rc6;
8014 * Disable RC6 on Ironlake
8016 if (INTEL_INFO(dev)->gen == 5)
8020 * Disable rc6 on Sandybridge
8022 if (INTEL_INFO(dev)->gen == 6) {
8023 DRM_DEBUG_DRIVER("Sandybridge: RC6 disabled\n");
8026 DRM_DEBUG_DRIVER("RC6 enabled\n");
8030 void gen6_enable_rps(struct drm_i915_private *dev_priv)
8032 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
8033 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
8034 u32 pcu_mbox, rc6_mask = 0;
8035 int cur_freq, min_freq, max_freq;
8038 /* Here begins a magic sequence of register writes to enable
8039 * auto-downclocking.
8041 * Perhaps there might be some value in exposing these to
8044 I915_WRITE(GEN6_RC_STATE, 0);
8045 mutex_lock(&dev_priv->dev->struct_mutex);
8046 gen6_gt_force_wake_get(dev_priv);
8048 /* disable the counters and set deterministic thresholds */
8049 I915_WRITE(GEN6_RC_CONTROL, 0);
8051 I915_WRITE(GEN6_RC1_WAKE_RATE_LIMIT, 1000 << 16);
8052 I915_WRITE(GEN6_RC6_WAKE_RATE_LIMIT, 40 << 16 | 30);
8053 I915_WRITE(GEN6_RC6pp_WAKE_RATE_LIMIT, 30);
8054 I915_WRITE(GEN6_RC_EVALUATION_INTERVAL, 125000);
8055 I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25);
8057 for (i = 0; i < I915_NUM_RINGS; i++)
8058 I915_WRITE(RING_MAX_IDLE(dev_priv->ring[i].mmio_base), 10);
8060 I915_WRITE(GEN6_RC_SLEEP, 0);
8061 I915_WRITE(GEN6_RC1e_THRESHOLD, 1000);
8062 I915_WRITE(GEN6_RC6_THRESHOLD, 50000);
8063 I915_WRITE(GEN6_RC6p_THRESHOLD, 150000);
8064 I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
8066 if (intel_enable_rc6(dev_priv->dev))
8067 rc6_mask = GEN6_RC_CTL_RC6_ENABLE |
8068 ((IS_GEN7(dev_priv->dev)) ? GEN6_RC_CTL_RC6p_ENABLE : 0);
8070 I915_WRITE(GEN6_RC_CONTROL,
8072 GEN6_RC_CTL_EI_MODE(1) |
8073 GEN6_RC_CTL_HW_ENABLE);
8075 I915_WRITE(GEN6_RPNSWREQ,
8076 GEN6_FREQUENCY(10) |
8078 GEN6_AGGRESSIVE_TURBO);
8079 I915_WRITE(GEN6_RC_VIDEO_FREQ,
8080 GEN6_FREQUENCY(12));
8082 I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 1000000);
8083 I915_WRITE(GEN6_RP_INTERRUPT_LIMITS,
8086 I915_WRITE(GEN6_RP_UP_THRESHOLD, 10000);
8087 I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 1000000);
8088 I915_WRITE(GEN6_RP_UP_EI, 100000);
8089 I915_WRITE(GEN6_RP_DOWN_EI, 5000000);
8090 I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 10);
8091 I915_WRITE(GEN6_RP_CONTROL,
8092 GEN6_RP_MEDIA_TURBO |
8093 GEN6_RP_MEDIA_HW_NORMAL_MODE |
8094 GEN6_RP_MEDIA_IS_GFX |
8096 GEN6_RP_UP_BUSY_AVG |
8097 GEN6_RP_DOWN_IDLE_CONT);
8099 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
8101 DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
8103 I915_WRITE(GEN6_PCODE_DATA, 0);
8104 I915_WRITE(GEN6_PCODE_MAILBOX,
8106 GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
8107 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
8109 DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
8111 min_freq = (rp_state_cap & 0xff0000) >> 16;
8112 max_freq = rp_state_cap & 0xff;
8113 cur_freq = (gt_perf_status & 0xff00) >> 8;
8115 /* Check for overclock support */
8116 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
8118 DRM_ERROR("timeout waiting for pcode mailbox to become idle\n");
8119 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_READ_OC_PARAMS);
8120 pcu_mbox = I915_READ(GEN6_PCODE_DATA);
8121 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) & GEN6_PCODE_READY) == 0,
8123 DRM_ERROR("timeout waiting for pcode mailbox to finish\n");
8124 if (pcu_mbox & (1<<31)) { /* OC supported */
8125 max_freq = pcu_mbox & 0xff;
8126 DRM_DEBUG_DRIVER("overclocking supported, adjusting frequency max to %dMHz\n", pcu_mbox * 50);
8129 /* In units of 100MHz */
8130 dev_priv->max_delay = max_freq;
8131 dev_priv->min_delay = min_freq;
8132 dev_priv->cur_delay = cur_freq;
8134 /* requires MSI enabled */
8135 I915_WRITE(GEN6_PMIER,
8136 GEN6_PM_MBOX_EVENT |
8137 GEN6_PM_THERMAL_EVENT |
8138 GEN6_PM_RP_DOWN_TIMEOUT |
8139 GEN6_PM_RP_UP_THRESHOLD |
8140 GEN6_PM_RP_DOWN_THRESHOLD |
8141 GEN6_PM_RP_UP_EI_EXPIRED |
8142 GEN6_PM_RP_DOWN_EI_EXPIRED);
8143 spin_lock_irq(&dev_priv->rps_lock);
8144 WARN_ON(dev_priv->pm_iir != 0);
8145 I915_WRITE(GEN6_PMIMR, 0);
8146 spin_unlock_irq(&dev_priv->rps_lock);
8147 /* enable all PM interrupts */
8148 I915_WRITE(GEN6_PMINTRMSK, 0);
8150 gen6_gt_force_wake_put(dev_priv);
8151 mutex_unlock(&dev_priv->dev->struct_mutex);
8154 void gen6_update_ring_freq(struct drm_i915_private *dev_priv)
8157 int gpu_freq, ia_freq, max_ia_freq;
8158 int scaling_factor = 180;
8160 max_ia_freq = cpufreq_quick_get_max(0);
8162 * Default to measured freq if none found, PCU will ensure we don't go
8166 max_ia_freq = tsc_khz;
8168 /* Convert from kHz to MHz */
8169 max_ia_freq /= 1000;
8171 mutex_lock(&dev_priv->dev->struct_mutex);
8174 * For each potential GPU frequency, load a ring frequency we'd like
8175 * to use for memory access. We do this by specifying the IA frequency
8176 * the PCU should use as a reference to determine the ring frequency.
8178 for (gpu_freq = dev_priv->max_delay; gpu_freq >= dev_priv->min_delay;
8180 int diff = dev_priv->max_delay - gpu_freq;
8183 * For GPU frequencies less than 750MHz, just use the lowest
8186 if (gpu_freq < min_freq)
8189 ia_freq = max_ia_freq - ((diff * scaling_factor) / 2);
8190 ia_freq = DIV_ROUND_CLOSEST(ia_freq, 100);
8192 I915_WRITE(GEN6_PCODE_DATA,
8193 (ia_freq << GEN6_PCODE_FREQ_IA_RATIO_SHIFT) |
8195 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
8196 GEN6_PCODE_WRITE_MIN_FREQ_TABLE);
8197 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
8198 GEN6_PCODE_READY) == 0, 10)) {
8199 DRM_ERROR("pcode write of freq table timed out\n");
8204 mutex_unlock(&dev_priv->dev->struct_mutex);
8207 static void ironlake_init_clock_gating(struct drm_device *dev)
8209 struct drm_i915_private *dev_priv = dev->dev_private;
8210 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
8212 /* Required for FBC */
8213 dspclk_gate |= DPFCUNIT_CLOCK_GATE_DISABLE |
8214 DPFCRUNIT_CLOCK_GATE_DISABLE |
8215 DPFDUNIT_CLOCK_GATE_DISABLE;
8216 /* Required for CxSR */
8217 dspclk_gate |= DPARBUNIT_CLOCK_GATE_DISABLE;
8219 I915_WRITE(PCH_3DCGDIS0,
8220 MARIUNIT_CLOCK_GATE_DISABLE |
8221 SVSMUNIT_CLOCK_GATE_DISABLE);
8222 I915_WRITE(PCH_3DCGDIS1,
8223 VFMUNIT_CLOCK_GATE_DISABLE);
8225 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
8228 * According to the spec the following bits should be set in
8229 * order to enable memory self-refresh
8230 * The bit 22/21 of 0x42004
8231 * The bit 5 of 0x42020
8232 * The bit 15 of 0x45000
8234 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8235 (I915_READ(ILK_DISPLAY_CHICKEN2) |
8236 ILK_DPARB_GATE | ILK_VSDPFD_FULL));
8237 I915_WRITE(ILK_DSPCLK_GATE,
8238 (I915_READ(ILK_DSPCLK_GATE) |
8239 ILK_DPARB_CLK_GATE));
8240 I915_WRITE(DISP_ARB_CTL,
8241 (I915_READ(DISP_ARB_CTL) |
8243 I915_WRITE(WM3_LP_ILK, 0);
8244 I915_WRITE(WM2_LP_ILK, 0);
8245 I915_WRITE(WM1_LP_ILK, 0);
8248 * Based on the document from hardware guys the following bits
8249 * should be set unconditionally in order to enable FBC.
8250 * The bit 22 of 0x42000
8251 * The bit 22 of 0x42004
8252 * The bit 7,8,9 of 0x42020.
8254 if (IS_IRONLAKE_M(dev)) {
8255 I915_WRITE(ILK_DISPLAY_CHICKEN1,
8256 I915_READ(ILK_DISPLAY_CHICKEN1) |
8258 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8259 I915_READ(ILK_DISPLAY_CHICKEN2) |
8261 I915_WRITE(ILK_DSPCLK_GATE,
8262 I915_READ(ILK_DSPCLK_GATE) |
8268 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8269 I915_READ(ILK_DISPLAY_CHICKEN2) |
8270 ILK_ELPIN_409_SELECT);
8271 I915_WRITE(_3D_CHICKEN2,
8272 _3D_CHICKEN2_WM_READ_PIPELINED << 16 |
8273 _3D_CHICKEN2_WM_READ_PIPELINED);
8276 static void gen6_init_clock_gating(struct drm_device *dev)
8278 struct drm_i915_private *dev_priv = dev->dev_private;
8280 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
8282 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
8284 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8285 I915_READ(ILK_DISPLAY_CHICKEN2) |
8286 ILK_ELPIN_409_SELECT);
8288 /* WaDisableHiZPlanesWhenMSAAEnabled */
8289 I915_WRITE(_3D_CHICKEN,
8290 _MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB));
8292 I915_WRITE(WM3_LP_ILK, 0);
8293 I915_WRITE(WM2_LP_ILK, 0);
8294 I915_WRITE(WM1_LP_ILK, 0);
8296 /* According to the BSpec vol1g, bit 12 (RCPBUNIT) clock
8297 * gating disable must be set. Failure to set it results in
8298 * flickering pixels due to Z write ordering failures after
8299 * some amount of runtime in the Mesa "fire" demo, and Unigine
8300 * Sanctuary and Tropics, and apparently anything else with
8301 * alpha test or pixel discard.
8303 * According to the spec, bit 11 (RCCUNIT) must also be set,
8304 * but we didn't debug actual testcases to find it out.
8306 I915_WRITE(GEN6_UCGCTL2,
8307 GEN6_RCPBUNIT_CLOCK_GATE_DISABLE |
8308 GEN6_RCCUNIT_CLOCK_GATE_DISABLE);
8311 * According to the spec the following bits should be
8312 * set in order to enable memory self-refresh and fbc:
8313 * The bit21 and bit22 of 0x42000
8314 * The bit21 and bit22 of 0x42004
8315 * The bit5 and bit7 of 0x42020
8316 * The bit14 of 0x70180
8317 * The bit14 of 0x71180
8319 I915_WRITE(ILK_DISPLAY_CHICKEN1,
8320 I915_READ(ILK_DISPLAY_CHICKEN1) |
8321 ILK_FBCQ_DIS | ILK_PABSTRETCH_DIS);
8322 I915_WRITE(ILK_DISPLAY_CHICKEN2,
8323 I915_READ(ILK_DISPLAY_CHICKEN2) |
8324 ILK_DPARB_GATE | ILK_VSDPFD_FULL);
8325 I915_WRITE(ILK_DSPCLK_GATE,
8326 I915_READ(ILK_DSPCLK_GATE) |
8327 ILK_DPARB_CLK_GATE |
8330 for_each_pipe(pipe) {
8331 I915_WRITE(DSPCNTR(pipe),
8332 I915_READ(DSPCNTR(pipe)) |
8333 DISPPLANE_TRICKLE_FEED_DISABLE);
8334 intel_flush_display_plane(dev_priv, pipe);
8337 /* The default value should be 0x200 according to docs, but the two
8338 * platforms I checked have a 0 for this. (Maybe BIOS overrides?) */
8339 I915_WRITE(GEN6_GT_MODE, 0xffff << 16);
8340 I915_WRITE(GEN6_GT_MODE, GEN6_GT_MODE_HI << 16 | GEN6_GT_MODE_HI);
8343 static void gen7_setup_fixed_func_scheduler(struct drm_i915_private *dev_priv)
8345 uint32_t reg = I915_READ(GEN7_FF_THREAD_MODE);
8347 reg &= ~GEN7_FF_SCHED_MASK;
8348 reg |= GEN7_FF_TS_SCHED_HW;
8349 reg |= GEN7_FF_VS_SCHED_HW;
8350 reg |= GEN7_FF_DS_SCHED_HW;
8352 I915_WRITE(GEN7_FF_THREAD_MODE, reg);
8355 static void ivybridge_init_clock_gating(struct drm_device *dev)
8357 struct drm_i915_private *dev_priv = dev->dev_private;
8359 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
8361 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
8363 I915_WRITE(WM3_LP_ILK, 0);
8364 I915_WRITE(WM2_LP_ILK, 0);
8365 I915_WRITE(WM1_LP_ILK, 0);
8367 /* According to the spec, bit 13 (RCZUNIT) must be set on IVB.
8368 * This implements the WaDisableRCZUnitClockGating workaround.
8370 I915_WRITE(GEN6_UCGCTL2, GEN6_RCZUNIT_CLOCK_GATE_DISABLE);
8372 I915_WRITE(ILK_DSPCLK_GATE, IVB_VRHUNIT_CLK_GATE);
8374 /* Apply the WaDisableRHWOOptimizationForRenderHang workaround. */
8375 I915_WRITE(GEN7_COMMON_SLICE_CHICKEN1,
8376 GEN7_CSC1_RHWO_OPT_DISABLE_IN_RCC);
8378 /* WaApplyL3ControlAndL3ChickenMode requires those two on Ivy Bridge */
8379 I915_WRITE(GEN7_L3CNTLREG1,
8380 GEN7_WA_FOR_GEN7_L3_CONTROL);
8381 I915_WRITE(GEN7_L3_CHICKEN_MODE_REGISTER,
8382 GEN7_WA_L3_CHICKEN_MODE);
8384 /* This is required by WaCatErrorRejectionIssue */
8385 I915_WRITE(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG,
8386 I915_READ(GEN7_SQ_CHICKEN_MBCUNIT_CONFIG) |
8387 GEN7_SQ_CHICKEN_MBCUNIT_SQINTMOB);
8389 for_each_pipe(pipe) {
8390 I915_WRITE(DSPCNTR(pipe),
8391 I915_READ(DSPCNTR(pipe)) |
8392 DISPPLANE_TRICKLE_FEED_DISABLE);
8393 intel_flush_display_plane(dev_priv, pipe);
8396 gen7_setup_fixed_func_scheduler(dev_priv);
8399 static void g4x_init_clock_gating(struct drm_device *dev)
8401 struct drm_i915_private *dev_priv = dev->dev_private;
8402 uint32_t dspclk_gate;
8404 I915_WRITE(RENCLK_GATE_D1, 0);
8405 I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
8406 GS_UNIT_CLOCK_GATE_DISABLE |
8407 CL_UNIT_CLOCK_GATE_DISABLE);
8408 I915_WRITE(RAMCLK_GATE_D, 0);
8409 dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
8410 OVRUNIT_CLOCK_GATE_DISABLE |
8411 OVCUNIT_CLOCK_GATE_DISABLE;
8413 dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
8414 I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
8417 static void crestline_init_clock_gating(struct drm_device *dev)
8419 struct drm_i915_private *dev_priv = dev->dev_private;
8421 I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
8422 I915_WRITE(RENCLK_GATE_D2, 0);
8423 I915_WRITE(DSPCLK_GATE_D, 0);
8424 I915_WRITE(RAMCLK_GATE_D, 0);
8425 I915_WRITE16(DEUC, 0);
8428 static void broadwater_init_clock_gating(struct drm_device *dev)
8430 struct drm_i915_private *dev_priv = dev->dev_private;
8432 I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
8433 I965_RCC_CLOCK_GATE_DISABLE |
8434 I965_RCPB_CLOCK_GATE_DISABLE |
8435 I965_ISC_CLOCK_GATE_DISABLE |
8436 I965_FBC_CLOCK_GATE_DISABLE);
8437 I915_WRITE(RENCLK_GATE_D2, 0);
8440 static void gen3_init_clock_gating(struct drm_device *dev)
8442 struct drm_i915_private *dev_priv = dev->dev_private;
8443 u32 dstate = I915_READ(D_STATE);
8445 dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
8446 DSTATE_DOT_CLOCK_GATING;
8447 I915_WRITE(D_STATE, dstate);
8450 static void i85x_init_clock_gating(struct drm_device *dev)
8452 struct drm_i915_private *dev_priv = dev->dev_private;
8454 I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
8457 static void i830_init_clock_gating(struct drm_device *dev)
8459 struct drm_i915_private *dev_priv = dev->dev_private;
8461 I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
8464 static void ibx_init_clock_gating(struct drm_device *dev)
8466 struct drm_i915_private *dev_priv = dev->dev_private;
8469 * On Ibex Peak and Cougar Point, we need to disable clock
8470 * gating for the panel power sequencer or it will fail to
8471 * start up when no ports are active.
8473 I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
8476 static void cpt_init_clock_gating(struct drm_device *dev)
8478 struct drm_i915_private *dev_priv = dev->dev_private;
8482 * On Ibex Peak and Cougar Point, we need to disable clock
8483 * gating for the panel power sequencer or it will fail to
8484 * start up when no ports are active.
8486 I915_WRITE(SOUTH_DSPCLK_GATE_D, PCH_DPLSUNIT_CLOCK_GATE_DISABLE);
8487 I915_WRITE(SOUTH_CHICKEN2, I915_READ(SOUTH_CHICKEN2) |
8488 DPLS_EDP_PPS_FIX_DIS);
8489 /* Without this, mode sets may fail silently on FDI */
8491 I915_WRITE(TRANS_CHICKEN2(pipe), TRANS_AUTOTRAIN_GEN_STALL_DIS);
8494 static void ironlake_teardown_rc6(struct drm_device *dev)
8496 struct drm_i915_private *dev_priv = dev->dev_private;
8498 if (dev_priv->renderctx) {
8499 i915_gem_object_unpin(dev_priv->renderctx);
8500 drm_gem_object_unreference(&dev_priv->renderctx->base);
8501 dev_priv->renderctx = NULL;
8504 if (dev_priv->pwrctx) {
8505 i915_gem_object_unpin(dev_priv->pwrctx);
8506 drm_gem_object_unreference(&dev_priv->pwrctx->base);
8507 dev_priv->pwrctx = NULL;
8511 static void ironlake_disable_rc6(struct drm_device *dev)
8513 struct drm_i915_private *dev_priv = dev->dev_private;
8515 if (I915_READ(PWRCTXA)) {
8516 /* Wake the GPU, prevent RC6, then restore RSTDBYCTL */
8517 I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) | RCX_SW_EXIT);
8518 wait_for(((I915_READ(RSTDBYCTL) & RSX_STATUS_MASK) == RSX_STATUS_ON),
8521 I915_WRITE(PWRCTXA, 0);
8522 POSTING_READ(PWRCTXA);
8524 I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
8525 POSTING_READ(RSTDBYCTL);
8528 ironlake_teardown_rc6(dev);
8531 static int ironlake_setup_rc6(struct drm_device *dev)
8533 struct drm_i915_private *dev_priv = dev->dev_private;
8535 if (dev_priv->renderctx == NULL)
8536 dev_priv->renderctx = intel_alloc_context_page(dev);
8537 if (!dev_priv->renderctx)
8540 if (dev_priv->pwrctx == NULL)
8541 dev_priv->pwrctx = intel_alloc_context_page(dev);
8542 if (!dev_priv->pwrctx) {
8543 ironlake_teardown_rc6(dev);
8550 void ironlake_enable_rc6(struct drm_device *dev)
8552 struct drm_i915_private *dev_priv = dev->dev_private;
8555 /* rc6 disabled by default due to repeated reports of hanging during
8558 if (!intel_enable_rc6(dev))
8561 mutex_lock(&dev->struct_mutex);
8562 ret = ironlake_setup_rc6(dev);
8564 mutex_unlock(&dev->struct_mutex);
8569 * GPU can automatically power down the render unit if given a page
8572 ret = BEGIN_LP_RING(6);
8574 ironlake_teardown_rc6(dev);
8575 mutex_unlock(&dev->struct_mutex);
8579 OUT_RING(MI_SUSPEND_FLUSH | MI_SUSPEND_FLUSH_EN);
8580 OUT_RING(MI_SET_CONTEXT);
8581 OUT_RING(dev_priv->renderctx->gtt_offset |
8583 MI_SAVE_EXT_STATE_EN |
8584 MI_RESTORE_EXT_STATE_EN |
8585 MI_RESTORE_INHIBIT);
8586 OUT_RING(MI_SUSPEND_FLUSH);
8592 * Wait for the command parser to advance past MI_SET_CONTEXT. The HW
8593 * does an implicit flush, combined with MI_FLUSH above, it should be
8594 * safe to assume that renderctx is valid
8596 ret = intel_wait_ring_idle(LP_RING(dev_priv));
8598 DRM_ERROR("failed to enable ironlake power power savings\n");
8599 ironlake_teardown_rc6(dev);
8600 mutex_unlock(&dev->struct_mutex);
8604 I915_WRITE(PWRCTXA, dev_priv->pwrctx->gtt_offset | PWRCTX_EN);
8605 I915_WRITE(RSTDBYCTL, I915_READ(RSTDBYCTL) & ~RCX_SW_EXIT);
8606 mutex_unlock(&dev->struct_mutex);
8609 void intel_init_clock_gating(struct drm_device *dev)
8611 struct drm_i915_private *dev_priv = dev->dev_private;
8613 dev_priv->display.init_clock_gating(dev);
8615 if (dev_priv->display.init_pch_clock_gating)
8616 dev_priv->display.init_pch_clock_gating(dev);
8619 /* Set up chip specific display functions */
8620 static void intel_init_display(struct drm_device *dev)
8622 struct drm_i915_private *dev_priv = dev->dev_private;
8624 /* We always want a DPMS function */
8625 if (HAS_PCH_SPLIT(dev)) {
8626 dev_priv->display.dpms = ironlake_crtc_dpms;
8627 dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
8628 dev_priv->display.update_plane = ironlake_update_plane;
8630 dev_priv->display.dpms = i9xx_crtc_dpms;
8631 dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
8632 dev_priv->display.update_plane = i9xx_update_plane;
8635 if (I915_HAS_FBC(dev)) {
8636 if (HAS_PCH_SPLIT(dev)) {
8637 dev_priv->display.fbc_enabled = ironlake_fbc_enabled;
8638 dev_priv->display.enable_fbc = ironlake_enable_fbc;
8639 dev_priv->display.disable_fbc = ironlake_disable_fbc;
8640 } else if (IS_GM45(dev)) {
8641 dev_priv->display.fbc_enabled = g4x_fbc_enabled;
8642 dev_priv->display.enable_fbc = g4x_enable_fbc;
8643 dev_priv->display.disable_fbc = g4x_disable_fbc;
8644 } else if (IS_CRESTLINE(dev)) {
8645 dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
8646 dev_priv->display.enable_fbc = i8xx_enable_fbc;
8647 dev_priv->display.disable_fbc = i8xx_disable_fbc;
8649 /* 855GM needs testing */
8652 /* Returns the core display clock speed */
8653 if (IS_I945G(dev) || (IS_G33(dev) && !IS_PINEVIEW_M(dev)))
8654 dev_priv->display.get_display_clock_speed =
8655 i945_get_display_clock_speed;
8656 else if (IS_I915G(dev))
8657 dev_priv->display.get_display_clock_speed =
8658 i915_get_display_clock_speed;
8659 else if (IS_I945GM(dev) || IS_845G(dev) || IS_PINEVIEW_M(dev))
8660 dev_priv->display.get_display_clock_speed =
8661 i9xx_misc_get_display_clock_speed;
8662 else if (IS_I915GM(dev))
8663 dev_priv->display.get_display_clock_speed =
8664 i915gm_get_display_clock_speed;
8665 else if (IS_I865G(dev))
8666 dev_priv->display.get_display_clock_speed =
8667 i865_get_display_clock_speed;
8668 else if (IS_I85X(dev))
8669 dev_priv->display.get_display_clock_speed =
8670 i855_get_display_clock_speed;
8672 dev_priv->display.get_display_clock_speed =
8673 i830_get_display_clock_speed;
8675 /* For FIFO watermark updates */
8676 if (HAS_PCH_SPLIT(dev)) {
8677 dev_priv->display.force_wake_get = __gen6_gt_force_wake_get;
8678 dev_priv->display.force_wake_put = __gen6_gt_force_wake_put;
8680 /* IVB configs may use multi-threaded forcewake */
8681 if (IS_IVYBRIDGE(dev)) {
8684 mutex_lock(&dev->struct_mutex);
8685 __gen6_gt_force_wake_mt_get(dev_priv);
8686 ecobus = I915_READ(ECOBUS);
8687 __gen6_gt_force_wake_mt_put(dev_priv);
8688 mutex_unlock(&dev->struct_mutex);
8690 if (ecobus & FORCEWAKE_MT_ENABLE) {
8691 DRM_DEBUG_KMS("Using MT version of forcewake\n");
8692 dev_priv->display.force_wake_get =
8693 __gen6_gt_force_wake_mt_get;
8694 dev_priv->display.force_wake_put =
8695 __gen6_gt_force_wake_mt_put;
8699 if (HAS_PCH_IBX(dev))
8700 dev_priv->display.init_pch_clock_gating = ibx_init_clock_gating;
8701 else if (HAS_PCH_CPT(dev))
8702 dev_priv->display.init_pch_clock_gating = cpt_init_clock_gating;
8705 if (I915_READ(MLTR_ILK) & ILK_SRLT_MASK)
8706 dev_priv->display.update_wm = ironlake_update_wm;
8708 DRM_DEBUG_KMS("Failed to get proper latency. "
8710 dev_priv->display.update_wm = NULL;
8712 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
8713 dev_priv->display.init_clock_gating = ironlake_init_clock_gating;
8714 dev_priv->display.write_eld = ironlake_write_eld;
8715 } else if (IS_GEN6(dev)) {
8716 if (SNB_READ_WM0_LATENCY()) {
8717 dev_priv->display.update_wm = sandybridge_update_wm;
8719 DRM_DEBUG_KMS("Failed to read display plane latency. "
8721 dev_priv->display.update_wm = NULL;
8723 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
8724 dev_priv->display.init_clock_gating = gen6_init_clock_gating;
8725 dev_priv->display.write_eld = ironlake_write_eld;
8726 } else if (IS_IVYBRIDGE(dev)) {
8727 /* FIXME: detect B0+ stepping and use auto training */
8728 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
8729 if (SNB_READ_WM0_LATENCY()) {
8730 dev_priv->display.update_wm = sandybridge_update_wm;
8732 DRM_DEBUG_KMS("Failed to read display plane latency. "
8734 dev_priv->display.update_wm = NULL;
8736 dev_priv->display.init_clock_gating = ivybridge_init_clock_gating;
8737 dev_priv->display.write_eld = ironlake_write_eld;
8739 dev_priv->display.update_wm = NULL;
8740 } else if (IS_PINEVIEW(dev)) {
8741 if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev),
8744 dev_priv->mem_freq)) {
8745 DRM_INFO("failed to find known CxSR latency "
8746 "(found ddr%s fsb freq %d, mem freq %d), "
8748 (dev_priv->is_ddr3 == 1) ? "3" : "2",
8749 dev_priv->fsb_freq, dev_priv->mem_freq);
8750 /* Disable CxSR and never update its watermark again */
8751 pineview_disable_cxsr(dev);
8752 dev_priv->display.update_wm = NULL;
8754 dev_priv->display.update_wm = pineview_update_wm;
8755 dev_priv->display.init_clock_gating = gen3_init_clock_gating;
8756 } else if (IS_G4X(dev)) {
8757 dev_priv->display.write_eld = g4x_write_eld;
8758 dev_priv->display.update_wm = g4x_update_wm;
8759 dev_priv->display.init_clock_gating = g4x_init_clock_gating;
8760 } else if (IS_GEN4(dev)) {
8761 dev_priv->display.update_wm = i965_update_wm;
8762 if (IS_CRESTLINE(dev))
8763 dev_priv->display.init_clock_gating = crestline_init_clock_gating;
8764 else if (IS_BROADWATER(dev))
8765 dev_priv->display.init_clock_gating = broadwater_init_clock_gating;
8766 } else if (IS_GEN3(dev)) {
8767 dev_priv->display.update_wm = i9xx_update_wm;
8768 dev_priv->display.get_fifo_size = i9xx_get_fifo_size;
8769 dev_priv->display.init_clock_gating = gen3_init_clock_gating;
8770 } else if (IS_I865G(dev)) {
8771 dev_priv->display.update_wm = i830_update_wm;
8772 dev_priv->display.init_clock_gating = i85x_init_clock_gating;
8773 dev_priv->display.get_fifo_size = i830_get_fifo_size;
8774 } else if (IS_I85X(dev)) {
8775 dev_priv->display.update_wm = i9xx_update_wm;
8776 dev_priv->display.get_fifo_size = i85x_get_fifo_size;
8777 dev_priv->display.init_clock_gating = i85x_init_clock_gating;
8779 dev_priv->display.update_wm = i830_update_wm;
8780 dev_priv->display.init_clock_gating = i830_init_clock_gating;
8782 dev_priv->display.get_fifo_size = i845_get_fifo_size;
8784 dev_priv->display.get_fifo_size = i830_get_fifo_size;
8787 /* Default just returns -ENODEV to indicate unsupported */
8788 dev_priv->display.queue_flip = intel_default_queue_flip;
8790 switch (INTEL_INFO(dev)->gen) {
8792 dev_priv->display.queue_flip = intel_gen2_queue_flip;
8796 dev_priv->display.queue_flip = intel_gen3_queue_flip;
8801 dev_priv->display.queue_flip = intel_gen4_queue_flip;
8805 dev_priv->display.queue_flip = intel_gen6_queue_flip;
8808 dev_priv->display.queue_flip = intel_gen7_queue_flip;
8814 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
8815 * resume, or other times. This quirk makes sure that's the case for
8818 static void quirk_pipea_force(struct drm_device *dev)
8820 struct drm_i915_private *dev_priv = dev->dev_private;
8822 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
8823 DRM_DEBUG_DRIVER("applying pipe a force quirk\n");
8827 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
8829 static void quirk_ssc_force_disable(struct drm_device *dev)
8831 struct drm_i915_private *dev_priv = dev->dev_private;
8832 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
8836 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
8839 static void quirk_invert_brightness(struct drm_device *dev)
8841 struct drm_i915_private *dev_priv = dev->dev_private;
8842 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
8845 struct intel_quirk {
8847 int subsystem_vendor;
8848 int subsystem_device;
8849 void (*hook)(struct drm_device *dev);
8852 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
8853 struct intel_dmi_quirk {
8854 void (*hook)(struct drm_device *dev);
8855 const struct dmi_system_id (*dmi_id_list)[];
8858 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
8860 DRM_INFO("Backlight polarity reversed on %s\n", id->ident);
8864 static const struct intel_dmi_quirk intel_dmi_quirks[] = {
8866 .dmi_id_list = &(const struct dmi_system_id[]) {
8868 .callback = intel_dmi_reverse_brightness,
8869 .ident = "NCR Corporation",
8870 .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
8871 DMI_MATCH(DMI_PRODUCT_NAME, ""),
8874 { } /* terminating entry */
8876 .hook = quirk_invert_brightness,
8880 struct intel_quirk intel_quirks[] = {
8881 /* HP Compaq 2730p needs pipe A force quirk (LP: #291555) */
8882 { 0x2a42, 0x103c, 0x30eb, quirk_pipea_force },
8883 /* HP Mini needs pipe A force quirk (LP: #322104) */
8884 { 0x27ae, 0x103c, 0x361a, quirk_pipea_force },
8886 /* Thinkpad R31 needs pipe A force quirk */
8887 { 0x3577, 0x1014, 0x0505, quirk_pipea_force },
8888 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
8889 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
8891 /* ThinkPad X30 needs pipe A force quirk (LP: #304614) */
8892 { 0x3577, 0x1014, 0x0513, quirk_pipea_force },
8893 /* ThinkPad X40 needs pipe A force quirk */
8895 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
8896 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
8898 /* 855 & before need to leave pipe A & dpll A up */
8899 { 0x3582, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
8900 { 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
8902 /* Lenovo U160 cannot use SSC on LVDS */
8903 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
8905 /* Sony Vaio Y cannot use SSC on LVDS */
8906 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
8908 /* Acer Aspire 5734Z must invert backlight brightness */
8909 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
8911 /* Acer/eMachines G725 */
8912 { 0x2a42, 0x1025, 0x0210, quirk_invert_brightness },
8914 /* Acer/eMachines e725 */
8915 { 0x2a42, 0x1025, 0x0212, quirk_invert_brightness },
8917 /* Acer/Packard Bell NCL20 */
8918 { 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
8921 static void intel_init_quirks(struct drm_device *dev)
8923 struct pci_dev *d = dev->pdev;
8926 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
8927 struct intel_quirk *q = &intel_quirks[i];
8929 if (d->device == q->device &&
8930 (d->subsystem_vendor == q->subsystem_vendor ||
8931 q->subsystem_vendor == PCI_ANY_ID) &&
8932 (d->subsystem_device == q->subsystem_device ||
8933 q->subsystem_device == PCI_ANY_ID))
8936 for (i = 0; i < ARRAY_SIZE(intel_dmi_quirks); i++) {
8937 if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0)
8938 intel_dmi_quirks[i].hook(dev);
8942 /* Disable the VGA plane that we never use */
8943 static void i915_disable_vga(struct drm_device *dev)
8945 struct drm_i915_private *dev_priv = dev->dev_private;
8949 if (HAS_PCH_SPLIT(dev))
8950 vga_reg = CPU_VGACNTRL;
8954 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
8955 outb(1, VGA_SR_INDEX);
8956 sr1 = inb(VGA_SR_DATA);
8957 outb(sr1 | 1<<5, VGA_SR_DATA);
8958 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
8961 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
8962 POSTING_READ(vga_reg);
8965 void i915_redisable_vga(struct drm_device *dev)
8967 struct drm_i915_private *dev_priv = dev->dev_private;
8970 if (HAS_PCH_SPLIT(dev))
8971 vga_reg = CPU_VGACNTRL;
8975 if (I915_READ(vga_reg) != VGA_DISP_DISABLE) {
8976 DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
8977 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
8978 POSTING_READ(vga_reg);
8982 void intel_modeset_init(struct drm_device *dev)
8984 struct drm_i915_private *dev_priv = dev->dev_private;
8987 drm_mode_config_init(dev);
8989 dev->mode_config.min_width = 0;
8990 dev->mode_config.min_height = 0;
8992 dev->mode_config.funcs = (void *)&intel_mode_funcs;
8994 intel_init_quirks(dev);
8996 intel_init_display(dev);
8999 dev->mode_config.max_width = 2048;
9000 dev->mode_config.max_height = 2048;
9001 } else if (IS_GEN3(dev)) {
9002 dev->mode_config.max_width = 4096;
9003 dev->mode_config.max_height = 4096;
9005 dev->mode_config.max_width = 8192;
9006 dev->mode_config.max_height = 8192;
9008 dev->mode_config.fb_base = dev->agp->base;
9010 DRM_DEBUG_KMS("%d display pipe%s available.\n",
9011 dev_priv->num_pipe, dev_priv->num_pipe > 1 ? "s" : "");
9013 for (i = 0; i < dev_priv->num_pipe; i++) {
9014 intel_crtc_init(dev, i);
9017 /* Just disable it once at startup */
9018 i915_disable_vga(dev);
9019 intel_setup_outputs(dev);
9021 intel_init_clock_gating(dev);
9023 if (IS_IRONLAKE_M(dev)) {
9024 ironlake_enable_drps(dev);
9025 intel_init_emon(dev);
9028 if (IS_GEN6(dev) || IS_GEN7(dev)) {
9029 gen6_enable_rps(dev_priv);
9030 gen6_update_ring_freq(dev_priv);
9033 INIT_WORK(&dev_priv->idle_work, intel_idle_update);
9034 setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
9035 (unsigned long)dev);
9038 void intel_modeset_gem_init(struct drm_device *dev)
9040 if (IS_IRONLAKE_M(dev))
9041 ironlake_enable_rc6(dev);
9043 intel_setup_overlay(dev);
9046 void intel_modeset_cleanup(struct drm_device *dev)
9048 struct drm_i915_private *dev_priv = dev->dev_private;
9049 struct drm_crtc *crtc;
9050 struct intel_crtc *intel_crtc;
9052 drm_kms_helper_poll_fini(dev);
9053 mutex_lock(&dev->struct_mutex);
9055 intel_unregister_dsm_handler();
9058 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
9059 /* Skip inactive CRTCs */
9063 intel_crtc = to_intel_crtc(crtc);
9064 intel_increase_pllclock(crtc);
9067 intel_disable_fbc(dev);
9069 if (IS_IRONLAKE_M(dev))
9070 ironlake_disable_drps(dev);
9071 if (IS_GEN6(dev) || IS_GEN7(dev))
9072 gen6_disable_rps(dev);
9074 if (IS_IRONLAKE_M(dev))
9075 ironlake_disable_rc6(dev);
9077 mutex_unlock(&dev->struct_mutex);
9079 /* Disable the irq before mode object teardown, for the irq might
9080 * enqueue unpin/hotplug work. */
9081 drm_irq_uninstall(dev);
9082 cancel_work_sync(&dev_priv->hotplug_work);
9083 cancel_work_sync(&dev_priv->rps_work);
9085 /* flush any delayed tasks or pending work */
9086 flush_scheduled_work();
9088 /* Shut off idle work before the crtcs get freed. */
9089 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
9090 intel_crtc = to_intel_crtc(crtc);
9091 del_timer_sync(&intel_crtc->idle_timer);
9093 del_timer_sync(&dev_priv->idle_timer);
9094 cancel_work_sync(&dev_priv->idle_work);
9096 /* destroy backlight, if any, before the connectors */
9097 intel_panel_destroy_backlight(dev);
9099 drm_mode_config_cleanup(dev);
9103 * Return which encoder is currently attached for connector.
9105 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
9107 return &intel_attached_encoder(connector)->base;
9110 void intel_connector_attach_encoder(struct intel_connector *connector,
9111 struct intel_encoder *encoder)
9113 connector->encoder = encoder;
9114 drm_mode_connector_attach_encoder(&connector->base,
9119 * set vga decode state - true == enable VGA decode
9121 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
9123 struct drm_i915_private *dev_priv = dev->dev_private;
9126 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
9128 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
9130 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
9131 pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
9135 #ifdef CONFIG_DEBUG_FS
9136 #include <linux/seq_file.h>
9138 struct intel_display_error_state {
9139 struct intel_cursor_error_state {
9146 struct intel_pipe_error_state {
9158 struct intel_plane_error_state {
9169 struct intel_display_error_state *
9170 intel_display_capture_error_state(struct drm_device *dev)
9172 drm_i915_private_t *dev_priv = dev->dev_private;
9173 struct intel_display_error_state *error;
9176 error = kmalloc(sizeof(*error), GFP_ATOMIC);
9180 for (i = 0; i < 2; i++) {
9181 error->cursor[i].control = I915_READ(CURCNTR(i));
9182 error->cursor[i].position = I915_READ(CURPOS(i));
9183 error->cursor[i].base = I915_READ(CURBASE(i));
9185 error->plane[i].control = I915_READ(DSPCNTR(i));
9186 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
9187 error->plane[i].size = I915_READ(DSPSIZE(i));
9188 error->plane[i].pos = I915_READ(DSPPOS(i));
9189 error->plane[i].addr = I915_READ(DSPADDR(i));
9190 if (INTEL_INFO(dev)->gen >= 4) {
9191 error->plane[i].surface = I915_READ(DSPSURF(i));
9192 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
9195 error->pipe[i].conf = I915_READ(PIPECONF(i));
9196 error->pipe[i].source = I915_READ(PIPESRC(i));
9197 error->pipe[i].htotal = I915_READ(HTOTAL(i));
9198 error->pipe[i].hblank = I915_READ(HBLANK(i));
9199 error->pipe[i].hsync = I915_READ(HSYNC(i));
9200 error->pipe[i].vtotal = I915_READ(VTOTAL(i));
9201 error->pipe[i].vblank = I915_READ(VBLANK(i));
9202 error->pipe[i].vsync = I915_READ(VSYNC(i));
9209 intel_display_print_error_state(struct seq_file *m,
9210 struct drm_device *dev,
9211 struct intel_display_error_state *error)
9215 for (i = 0; i < 2; i++) {
9216 seq_printf(m, "Pipe [%d]:\n", i);
9217 seq_printf(m, " CONF: %08x\n", error->pipe[i].conf);
9218 seq_printf(m, " SRC: %08x\n", error->pipe[i].source);
9219 seq_printf(m, " HTOTAL: %08x\n", error->pipe[i].htotal);
9220 seq_printf(m, " HBLANK: %08x\n", error->pipe[i].hblank);
9221 seq_printf(m, " HSYNC: %08x\n", error->pipe[i].hsync);
9222 seq_printf(m, " VTOTAL: %08x\n", error->pipe[i].vtotal);
9223 seq_printf(m, " VBLANK: %08x\n", error->pipe[i].vblank);
9224 seq_printf(m, " VSYNC: %08x\n", error->pipe[i].vsync);
9226 seq_printf(m, "Plane [%d]:\n", i);
9227 seq_printf(m, " CNTR: %08x\n", error->plane[i].control);
9228 seq_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
9229 seq_printf(m, " SIZE: %08x\n", error->plane[i].size);
9230 seq_printf(m, " POS: %08x\n", error->plane[i].pos);
9231 seq_printf(m, " ADDR: %08x\n", error->plane[i].addr);
9232 if (INTEL_INFO(dev)->gen >= 4) {
9233 seq_printf(m, " SURF: %08x\n", error->plane[i].surface);
9234 seq_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
9237 seq_printf(m, "Cursor [%d]:\n", i);
9238 seq_printf(m, " CNTR: %08x\n", error->cursor[i].control);
9239 seq_printf(m, " POS: %08x\n", error->cursor[i].position);
9240 seq_printf(m, " BASE: %08x\n", error->cursor[i].base);