OMAPDSS: DISPC: skip scaling calculations when not scaling
[pandora-kernel.git] / drivers / video / omap2 / dss / dispc.c
1 /*
2  * linux/drivers/video/omap2/dss/dispc.c
3  *
4  * Copyright (C) 2009 Nokia Corporation
5  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6  *
7  * Some code and ideas taken from drivers/video/omap/ driver
8  * by Imre Deak.
9  *
10  * This program is free software; you can redistribute it and/or modify it
11  * under the terms of the GNU General Public License version 2 as published by
12  * the Free Software Foundation.
13  *
14  * This program is distributed in the hope that it will be useful, but WITHOUT
15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
17  * more details.
18  *
19  * You should have received a copy of the GNU General Public License along with
20  * this program.  If not, see <http://www.gnu.org/licenses/>.
21  */
22
23 #define DSS_SUBSYS_NAME "DISPC"
24
25 #include <linux/kernel.h>
26 #include <linux/dma-mapping.h>
27 #include <linux/vmalloc.h>
28 #include <linux/export.h>
29 #include <linux/clk.h>
30 #include <linux/io.h>
31 #include <linux/jiffies.h>
32 #include <linux/seq_file.h>
33 #include <linux/delay.h>
34 #include <linux/workqueue.h>
35 #include <linux/hardirq.h>
36 #include <linux/interrupt.h>
37 #include <linux/platform_device.h>
38 #include <linux/pm_runtime.h>
39
40 #include <plat/sram.h>
41 #include <plat/clock.h>
42
43 #include <video/omapdss.h>
44
45 #include "dss.h"
46 #include "dss_features.h"
47 #include "dispc.h"
48
49 /* DISPC */
50 #define DISPC_SZ_REGS                   SZ_4K
51
52 #define DISPC_IRQ_MASK_ERROR            (DISPC_IRQ_GFX_FIFO_UNDERFLOW | \
53                                          DISPC_IRQ_OCP_ERR | \
54                                          DISPC_IRQ_VID1_FIFO_UNDERFLOW | \
55                                          DISPC_IRQ_VID2_FIFO_UNDERFLOW | \
56                                          DISPC_IRQ_SYNC_LOST | \
57                                          DISPC_IRQ_SYNC_LOST_DIGIT)
58
59 #define DISPC_MAX_NR_ISRS               8
60
61 struct omap_dispc_isr_data {
62         omap_dispc_isr_t        isr;
63         void                    *arg;
64         u32                     mask;
65 };
66
67 struct dispc_h_coef {
68         s8 hc4;
69         s8 hc3;
70         u8 hc2;
71         s8 hc1;
72         s8 hc0;
73 };
74
75 struct dispc_v_coef {
76         s8 vc22;
77         s8 vc2;
78         u8 vc1;
79         s8 vc0;
80         s8 vc00;
81 };
82
83 enum omap_burst_size {
84         BURST_SIZE_X2 = 0,
85         BURST_SIZE_X4 = 1,
86         BURST_SIZE_X8 = 2,
87 };
88
89 #define REG_GET(idx, start, end) \
90         FLD_GET(dispc_read_reg(idx), start, end)
91
92 #define REG_FLD_MOD(idx, val, start, end)                               \
93         dispc_write_reg(idx, FLD_MOD(dispc_read_reg(idx), val, start, end))
94
95 struct dispc_irq_stats {
96         unsigned long last_reset;
97         unsigned irq_count;
98         unsigned irqs[32];
99 };
100
101 static struct {
102         struct platform_device *pdev;
103         void __iomem    *base;
104
105         int             ctx_loss_cnt;
106
107         int irq;
108         struct clk *dss_clk;
109
110         u32     fifo_size[MAX_DSS_OVERLAYS];
111
112         spinlock_t irq_lock;
113         u32 irq_error_mask;
114         struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS];
115         u32 error_irqs;
116         struct work_struct error_work;
117
118         bool            ctx_valid;
119         u32             ctx[DISPC_SZ_REGS / sizeof(u32)];
120
121 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
122         spinlock_t irq_stats_lock;
123         struct dispc_irq_stats irq_stats;
124 #endif
125 } dispc;
126
127 enum omap_color_component {
128         /* used for all color formats for OMAP3 and earlier
129          * and for RGB and Y color component on OMAP4
130          */
131         DISPC_COLOR_COMPONENT_RGB_Y             = 1 << 0,
132         /* used for UV component for
133          * OMAP_DSS_COLOR_YUV2, OMAP_DSS_COLOR_UYVY, OMAP_DSS_COLOR_NV12
134          * color formats on OMAP4
135          */
136         DISPC_COLOR_COMPONENT_UV                = 1 << 1,
137 };
138
139 static void _omap_dispc_set_irqs(void);
140
141 static inline void dispc_write_reg(const u16 idx, u32 val)
142 {
143         __raw_writel(val, dispc.base + idx);
144 }
145
146 static inline u32 dispc_read_reg(const u16 idx)
147 {
148         return __raw_readl(dispc.base + idx);
149 }
150
151 static int dispc_get_ctx_loss_count(void)
152 {
153         struct device *dev = &dispc.pdev->dev;
154         struct omap_display_platform_data *pdata = dev->platform_data;
155         struct omap_dss_board_info *board_data = pdata->board_data;
156         int cnt;
157
158         if (!board_data->get_context_loss_count)
159                 return -ENOENT;
160
161         cnt = board_data->get_context_loss_count(dev);
162
163         WARN_ONCE(cnt < 0, "get_context_loss_count failed: %d\n", cnt);
164
165         return cnt;
166 }
167
168 #define SR(reg) \
169         dispc.ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(DISPC_##reg)
170 #define RR(reg) \
171         dispc_write_reg(DISPC_##reg, dispc.ctx[DISPC_##reg / sizeof(u32)])
172
173 static void dispc_save_context(void)
174 {
175         int i, j;
176
177         DSSDBG("dispc_save_context\n");
178
179         SR(IRQENABLE);
180         SR(CONTROL);
181         SR(CONFIG);
182         SR(LINE_NUMBER);
183         if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
184                         dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
185                 SR(GLOBAL_ALPHA);
186         if (dss_has_feature(FEAT_MGR_LCD2)) {
187                 SR(CONTROL2);
188                 SR(CONFIG2);
189         }
190
191         for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
192                 SR(DEFAULT_COLOR(i));
193                 SR(TRANS_COLOR(i));
194                 SR(SIZE_MGR(i));
195                 if (i == OMAP_DSS_CHANNEL_DIGIT)
196                         continue;
197                 SR(TIMING_H(i));
198                 SR(TIMING_V(i));
199                 SR(POL_FREQ(i));
200                 SR(DIVISORo(i));
201
202                 SR(DATA_CYCLE1(i));
203                 SR(DATA_CYCLE2(i));
204                 SR(DATA_CYCLE3(i));
205
206                 if (dss_has_feature(FEAT_CPR)) {
207                         SR(CPR_COEF_R(i));
208                         SR(CPR_COEF_G(i));
209                         SR(CPR_COEF_B(i));
210                 }
211         }
212
213         for (i = 0; i < dss_feat_get_num_ovls(); i++) {
214                 SR(OVL_BA0(i));
215                 SR(OVL_BA1(i));
216                 SR(OVL_POSITION(i));
217                 SR(OVL_SIZE(i));
218                 SR(OVL_ATTRIBUTES(i));
219                 SR(OVL_FIFO_THRESHOLD(i));
220                 SR(OVL_ROW_INC(i));
221                 SR(OVL_PIXEL_INC(i));
222                 if (dss_has_feature(FEAT_PRELOAD))
223                         SR(OVL_PRELOAD(i));
224                 if (i == OMAP_DSS_GFX) {
225                         SR(OVL_WINDOW_SKIP(i));
226                         SR(OVL_TABLE_BA(i));
227                         continue;
228                 }
229                 SR(OVL_FIR(i));
230                 SR(OVL_PICTURE_SIZE(i));
231                 SR(OVL_ACCU0(i));
232                 SR(OVL_ACCU1(i));
233
234                 for (j = 0; j < 8; j++)
235                         SR(OVL_FIR_COEF_H(i, j));
236
237                 for (j = 0; j < 8; j++)
238                         SR(OVL_FIR_COEF_HV(i, j));
239
240                 for (j = 0; j < 5; j++)
241                         SR(OVL_CONV_COEF(i, j));
242
243                 if (dss_has_feature(FEAT_FIR_COEF_V)) {
244                         for (j = 0; j < 8; j++)
245                                 SR(OVL_FIR_COEF_V(i, j));
246                 }
247
248                 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
249                         SR(OVL_BA0_UV(i));
250                         SR(OVL_BA1_UV(i));
251                         SR(OVL_FIR2(i));
252                         SR(OVL_ACCU2_0(i));
253                         SR(OVL_ACCU2_1(i));
254
255                         for (j = 0; j < 8; j++)
256                                 SR(OVL_FIR_COEF_H2(i, j));
257
258                         for (j = 0; j < 8; j++)
259                                 SR(OVL_FIR_COEF_HV2(i, j));
260
261                         for (j = 0; j < 8; j++)
262                                 SR(OVL_FIR_COEF_V2(i, j));
263                 }
264                 if (dss_has_feature(FEAT_ATTR2))
265                         SR(OVL_ATTRIBUTES2(i));
266         }
267
268         if (dss_has_feature(FEAT_CORE_CLK_DIV))
269                 SR(DIVISOR);
270
271         dispc.ctx_loss_cnt = dispc_get_ctx_loss_count();
272         dispc.ctx_valid = true;
273
274         DSSDBG("context saved, ctx_loss_count %d\n", dispc.ctx_loss_cnt);
275 }
276
277 static void dispc_restore_context(void)
278 {
279         int i, j, ctx;
280
281         DSSDBG("dispc_restore_context\n");
282
283         if (!dispc.ctx_valid)
284                 return;
285
286         ctx = dispc_get_ctx_loss_count();
287
288         if (ctx >= 0 && ctx == dispc.ctx_loss_cnt)
289                 return;
290
291         DSSDBG("ctx_loss_count: saved %d, current %d\n",
292                         dispc.ctx_loss_cnt, ctx);
293
294         /*RR(IRQENABLE);*/
295         /*RR(CONTROL);*/
296         RR(CONFIG);
297         RR(LINE_NUMBER);
298         if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
299                         dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
300                 RR(GLOBAL_ALPHA);
301         if (dss_has_feature(FEAT_MGR_LCD2))
302                 RR(CONFIG2);
303
304         for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
305                 RR(DEFAULT_COLOR(i));
306                 RR(TRANS_COLOR(i));
307                 RR(SIZE_MGR(i));
308                 if (i == OMAP_DSS_CHANNEL_DIGIT)
309                         continue;
310                 RR(TIMING_H(i));
311                 RR(TIMING_V(i));
312                 RR(POL_FREQ(i));
313                 RR(DIVISORo(i));
314
315                 RR(DATA_CYCLE1(i));
316                 RR(DATA_CYCLE2(i));
317                 RR(DATA_CYCLE3(i));
318
319                 if (dss_has_feature(FEAT_CPR)) {
320                         RR(CPR_COEF_R(i));
321                         RR(CPR_COEF_G(i));
322                         RR(CPR_COEF_B(i));
323                 }
324         }
325
326         for (i = 0; i < dss_feat_get_num_ovls(); i++) {
327                 RR(OVL_BA0(i));
328                 RR(OVL_BA1(i));
329                 RR(OVL_POSITION(i));
330                 RR(OVL_SIZE(i));
331                 RR(OVL_ATTRIBUTES(i));
332                 RR(OVL_FIFO_THRESHOLD(i));
333                 RR(OVL_ROW_INC(i));
334                 RR(OVL_PIXEL_INC(i));
335                 if (dss_has_feature(FEAT_PRELOAD))
336                         RR(OVL_PRELOAD(i));
337                 if (i == OMAP_DSS_GFX) {
338                         RR(OVL_WINDOW_SKIP(i));
339                         RR(OVL_TABLE_BA(i));
340                         continue;
341                 }
342                 RR(OVL_FIR(i));
343                 RR(OVL_PICTURE_SIZE(i));
344                 RR(OVL_ACCU0(i));
345                 RR(OVL_ACCU1(i));
346
347                 for (j = 0; j < 8; j++)
348                         RR(OVL_FIR_COEF_H(i, j));
349
350                 for (j = 0; j < 8; j++)
351                         RR(OVL_FIR_COEF_HV(i, j));
352
353                 for (j = 0; j < 5; j++)
354                         RR(OVL_CONV_COEF(i, j));
355
356                 if (dss_has_feature(FEAT_FIR_COEF_V)) {
357                         for (j = 0; j < 8; j++)
358                                 RR(OVL_FIR_COEF_V(i, j));
359                 }
360
361                 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
362                         RR(OVL_BA0_UV(i));
363                         RR(OVL_BA1_UV(i));
364                         RR(OVL_FIR2(i));
365                         RR(OVL_ACCU2_0(i));
366                         RR(OVL_ACCU2_1(i));
367
368                         for (j = 0; j < 8; j++)
369                                 RR(OVL_FIR_COEF_H2(i, j));
370
371                         for (j = 0; j < 8; j++)
372                                 RR(OVL_FIR_COEF_HV2(i, j));
373
374                         for (j = 0; j < 8; j++)
375                                 RR(OVL_FIR_COEF_V2(i, j));
376                 }
377                 if (dss_has_feature(FEAT_ATTR2))
378                         RR(OVL_ATTRIBUTES2(i));
379         }
380
381         if (dss_has_feature(FEAT_CORE_CLK_DIV))
382                 RR(DIVISOR);
383
384         /* enable last, because LCD & DIGIT enable are here */
385         RR(CONTROL);
386         if (dss_has_feature(FEAT_MGR_LCD2))
387                 RR(CONTROL2);
388         /* clear spurious SYNC_LOST_DIGIT interrupts */
389         dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
390
391         /*
392          * enable last so IRQs won't trigger before
393          * the context is fully restored
394          */
395         RR(IRQENABLE);
396
397         DSSDBG("context restored\n");
398 }
399
400 #undef SR
401 #undef RR
402
403 int dispc_runtime_get(void)
404 {
405         int r;
406
407         DSSDBG("dispc_runtime_get\n");
408
409         r = pm_runtime_get_sync(&dispc.pdev->dev);
410         WARN_ON(r < 0);
411         return r < 0 ? r : 0;
412 }
413
414 void dispc_runtime_put(void)
415 {
416         int r;
417
418         DSSDBG("dispc_runtime_put\n");
419
420         r = pm_runtime_put(&dispc.pdev->dev);
421         WARN_ON(r < 0);
422 }
423
424 static inline bool dispc_mgr_is_lcd(enum omap_channel channel)
425 {
426         if (channel == OMAP_DSS_CHANNEL_LCD ||
427                         channel == OMAP_DSS_CHANNEL_LCD2)
428                 return true;
429         else
430                 return false;
431 }
432
433 static struct omap_dss_device *dispc_mgr_get_device(enum omap_channel channel)
434 {
435         struct omap_overlay_manager *mgr =
436                 omap_dss_get_overlay_manager(channel);
437
438         return mgr ? mgr->device : NULL;
439 }
440
441 bool dispc_mgr_go_busy(enum omap_channel channel)
442 {
443         int bit;
444
445         if (dispc_mgr_is_lcd(channel))
446                 bit = 5; /* GOLCD */
447         else
448                 bit = 6; /* GODIGIT */
449
450         if (channel == OMAP_DSS_CHANNEL_LCD2)
451                 return REG_GET(DISPC_CONTROL2, bit, bit) == 1;
452         else
453                 return REG_GET(DISPC_CONTROL, bit, bit) == 1;
454 }
455
456 void dispc_mgr_go(enum omap_channel channel)
457 {
458         int bit;
459         bool enable_bit, go_bit;
460
461         if (dispc_mgr_is_lcd(channel))
462                 bit = 0; /* LCDENABLE */
463         else
464                 bit = 1; /* DIGITALENABLE */
465
466         /* if the channel is not enabled, we don't need GO */
467         if (channel == OMAP_DSS_CHANNEL_LCD2)
468                 enable_bit = REG_GET(DISPC_CONTROL2, bit, bit) == 1;
469         else
470                 enable_bit = REG_GET(DISPC_CONTROL, bit, bit) == 1;
471
472         if (!enable_bit)
473                 return;
474
475         if (dispc_mgr_is_lcd(channel))
476                 bit = 5; /* GOLCD */
477         else
478                 bit = 6; /* GODIGIT */
479
480         if (channel == OMAP_DSS_CHANNEL_LCD2)
481                 go_bit = REG_GET(DISPC_CONTROL2, bit, bit) == 1;
482         else
483                 go_bit = REG_GET(DISPC_CONTROL, bit, bit) == 1;
484
485         if (go_bit) {
486                 DSSERR("GO bit not down for channel %d\n", channel);
487                 return;
488         }
489
490         DSSDBG("GO %s\n", channel == OMAP_DSS_CHANNEL_LCD ? "LCD" :
491                 (channel == OMAP_DSS_CHANNEL_LCD2 ? "LCD2" : "DIGIT"));
492
493         if (channel == OMAP_DSS_CHANNEL_LCD2)
494                 REG_FLD_MOD(DISPC_CONTROL2, 1, bit, bit);
495         else
496                 REG_FLD_MOD(DISPC_CONTROL, 1, bit, bit);
497 }
498
499 static void dispc_ovl_write_firh_reg(enum omap_plane plane, int reg, u32 value)
500 {
501         dispc_write_reg(DISPC_OVL_FIR_COEF_H(plane, reg), value);
502 }
503
504 static void dispc_ovl_write_firhv_reg(enum omap_plane plane, int reg, u32 value)
505 {
506         dispc_write_reg(DISPC_OVL_FIR_COEF_HV(plane, reg), value);
507 }
508
509 static void dispc_ovl_write_firv_reg(enum omap_plane plane, int reg, u32 value)
510 {
511         dispc_write_reg(DISPC_OVL_FIR_COEF_V(plane, reg), value);
512 }
513
514 static void dispc_ovl_write_firh2_reg(enum omap_plane plane, int reg, u32 value)
515 {
516         BUG_ON(plane == OMAP_DSS_GFX);
517
518         dispc_write_reg(DISPC_OVL_FIR_COEF_H2(plane, reg), value);
519 }
520
521 static void dispc_ovl_write_firhv2_reg(enum omap_plane plane, int reg,
522                 u32 value)
523 {
524         BUG_ON(plane == OMAP_DSS_GFX);
525
526         dispc_write_reg(DISPC_OVL_FIR_COEF_HV2(plane, reg), value);
527 }
528
529 static void dispc_ovl_write_firv2_reg(enum omap_plane plane, int reg, u32 value)
530 {
531         BUG_ON(plane == OMAP_DSS_GFX);
532
533         dispc_write_reg(DISPC_OVL_FIR_COEF_V2(plane, reg), value);
534 }
535
536 static void dispc_ovl_set_scale_coef(enum omap_plane plane, int hscaleup,
537                                   int vscaleup, int five_taps,
538                                   enum omap_color_component color_comp)
539 {
540         /* Coefficients for horizontal up-sampling */
541         static const struct dispc_h_coef coef_hup[8] = {
542                 {  0,   0, 128,   0,  0 },
543                 { -1,  13, 124,  -8,  0 },
544                 { -2,  30, 112, -11, -1 },
545                 { -5,  51,  95, -11, -2 },
546                 {  0,  -9,  73,  73, -9 },
547                 { -2, -11,  95,  51, -5 },
548                 { -1, -11, 112,  30, -2 },
549                 {  0,  -8, 124,  13, -1 },
550         };
551
552         /* Coefficients for vertical up-sampling */
553         static const struct dispc_v_coef coef_vup_3tap[8] = {
554                 { 0,  0, 128,  0, 0 },
555                 { 0,  3, 123,  2, 0 },
556                 { 0, 12, 111,  5, 0 },
557                 { 0, 32,  89,  7, 0 },
558                 { 0,  0,  64, 64, 0 },
559                 { 0,  7,  89, 32, 0 },
560                 { 0,  5, 111, 12, 0 },
561                 { 0,  2, 123,  3, 0 },
562         };
563
564         static const struct dispc_v_coef coef_vup_5tap[8] = {
565                 {  0,   0, 128,   0,  0 },
566                 { -1,  13, 124,  -8,  0 },
567                 { -2,  30, 112, -11, -1 },
568                 { -5,  51,  95, -11, -2 },
569                 {  0,  -9,  73,  73, -9 },
570                 { -2, -11,  95,  51, -5 },
571                 { -1, -11, 112,  30, -2 },
572                 {  0,  -8, 124,  13, -1 },
573         };
574
575         /* Coefficients for horizontal down-sampling */
576         static const struct dispc_h_coef coef_hdown[8] = {
577                 {   0, 36, 56, 36,  0 },
578                 {   4, 40, 55, 31, -2 },
579                 {   8, 44, 54, 27, -5 },
580                 {  12, 48, 53, 22, -7 },
581                 {  -9, 17, 52, 51, 17 },
582                 {  -7, 22, 53, 48, 12 },
583                 {  -5, 27, 54, 44,  8 },
584                 {  -2, 31, 55, 40,  4 },
585         };
586
587         /* Coefficients for vertical down-sampling */
588         static const struct dispc_v_coef coef_vdown_3tap[8] = {
589                 { 0, 36, 56, 36, 0 },
590                 { 0, 40, 57, 31, 0 },
591                 { 0, 45, 56, 27, 0 },
592                 { 0, 50, 55, 23, 0 },
593                 { 0, 18, 55, 55, 0 },
594                 { 0, 23, 55, 50, 0 },
595                 { 0, 27, 56, 45, 0 },
596                 { 0, 31, 57, 40, 0 },
597         };
598
599         static const struct dispc_v_coef coef_vdown_5tap[8] = {
600                 {   0, 36, 56, 36,  0 },
601                 {   4, 40, 55, 31, -2 },
602                 {   8, 44, 54, 27, -5 },
603                 {  12, 48, 53, 22, -7 },
604                 {  -9, 17, 52, 51, 17 },
605                 {  -7, 22, 53, 48, 12 },
606                 {  -5, 27, 54, 44,  8 },
607                 {  -2, 31, 55, 40,  4 },
608         };
609
610         const struct dispc_h_coef *h_coef;
611         const struct dispc_v_coef *v_coef;
612         int i;
613
614         if (hscaleup)
615                 h_coef = coef_hup;
616         else
617                 h_coef = coef_hdown;
618
619         if (vscaleup)
620                 v_coef = five_taps ? coef_vup_5tap : coef_vup_3tap;
621         else
622                 v_coef = five_taps ? coef_vdown_5tap : coef_vdown_3tap;
623
624         for (i = 0; i < 8; i++) {
625                 u32 h, hv;
626
627                 h = FLD_VAL(h_coef[i].hc0, 7, 0)
628                         | FLD_VAL(h_coef[i].hc1, 15, 8)
629                         | FLD_VAL(h_coef[i].hc2, 23, 16)
630                         | FLD_VAL(h_coef[i].hc3, 31, 24);
631                 hv = FLD_VAL(h_coef[i].hc4, 7, 0)
632                         | FLD_VAL(v_coef[i].vc0, 15, 8)
633                         | FLD_VAL(v_coef[i].vc1, 23, 16)
634                         | FLD_VAL(v_coef[i].vc2, 31, 24);
635
636                 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
637                         dispc_ovl_write_firh_reg(plane, i, h);
638                         dispc_ovl_write_firhv_reg(plane, i, hv);
639                 } else {
640                         dispc_ovl_write_firh2_reg(plane, i, h);
641                         dispc_ovl_write_firhv2_reg(plane, i, hv);
642                 }
643
644         }
645
646         if (five_taps) {
647                 for (i = 0; i < 8; i++) {
648                         u32 v;
649                         v = FLD_VAL(v_coef[i].vc00, 7, 0)
650                                 | FLD_VAL(v_coef[i].vc22, 15, 8);
651                         if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y)
652                                 dispc_ovl_write_firv_reg(plane, i, v);
653                         else
654                                 dispc_ovl_write_firv2_reg(plane, i, v);
655                 }
656         }
657 }
658
659 static void _dispc_setup_color_conv_coef(void)
660 {
661         int i;
662         const struct color_conv_coef {
663                 int  ry,  rcr,  rcb,   gy,  gcr,  gcb,   by,  bcr,  bcb;
664                 int  full_range;
665         }  ctbl_bt601_5 = {
666                 298,  409,    0,  298, -208, -100,  298,    0,  517, 0,
667         };
668
669         const struct color_conv_coef *ct;
670
671 #define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0))
672
673         ct = &ctbl_bt601_5;
674
675         for (i = 1; i < dss_feat_get_num_ovls(); i++) {
676                 dispc_write_reg(DISPC_OVL_CONV_COEF(i, 0),
677                         CVAL(ct->rcr, ct->ry));
678                 dispc_write_reg(DISPC_OVL_CONV_COEF(i, 1),
679                         CVAL(ct->gy,  ct->rcb));
680                 dispc_write_reg(DISPC_OVL_CONV_COEF(i, 2),
681                         CVAL(ct->gcb, ct->gcr));
682                 dispc_write_reg(DISPC_OVL_CONV_COEF(i, 3),
683                         CVAL(ct->bcr, ct->by));
684                 dispc_write_reg(DISPC_OVL_CONV_COEF(i, 4),
685                         CVAL(0, ct->bcb));
686
687                 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(i), ct->full_range,
688                         11, 11);
689         }
690
691 #undef CVAL
692 }
693
694
695 static void dispc_ovl_set_ba0(enum omap_plane plane, u32 paddr)
696 {
697         dispc_write_reg(DISPC_OVL_BA0(plane), paddr);
698 }
699
700 static void dispc_ovl_set_ba1(enum omap_plane plane, u32 paddr)
701 {
702         dispc_write_reg(DISPC_OVL_BA1(plane), paddr);
703 }
704
705 static void dispc_ovl_set_ba0_uv(enum omap_plane plane, u32 paddr)
706 {
707         dispc_write_reg(DISPC_OVL_BA0_UV(plane), paddr);
708 }
709
710 static void dispc_ovl_set_ba1_uv(enum omap_plane plane, u32 paddr)
711 {
712         dispc_write_reg(DISPC_OVL_BA1_UV(plane), paddr);
713 }
714
715 static void dispc_ovl_set_pos(enum omap_plane plane, int x, int y)
716 {
717         u32 val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0);
718
719         dispc_write_reg(DISPC_OVL_POSITION(plane), val);
720 }
721
722 static void dispc_ovl_set_pic_size(enum omap_plane plane, int width, int height)
723 {
724         u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
725
726         if (plane == OMAP_DSS_GFX)
727                 dispc_write_reg(DISPC_OVL_SIZE(plane), val);
728         else
729                 dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val);
730 }
731
732 static void dispc_ovl_set_vid_size(enum omap_plane plane, int width, int height)
733 {
734         u32 val;
735
736         BUG_ON(plane == OMAP_DSS_GFX);
737
738         val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
739
740         dispc_write_reg(DISPC_OVL_SIZE(plane), val);
741 }
742
743 static void dispc_ovl_set_zorder(enum omap_plane plane, u8 zorder)
744 {
745         struct omap_overlay *ovl = omap_dss_get_overlay(plane);
746
747         if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
748                 return;
749
750         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), zorder, 27, 26);
751 }
752
753 static void dispc_ovl_enable_zorder_planes(void)
754 {
755         int i;
756
757         if (!dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
758                 return;
759
760         for (i = 0; i < dss_feat_get_num_ovls(); i++)
761                 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(i), 1, 25, 25);
762 }
763
764 static void dispc_ovl_set_pre_mult_alpha(enum omap_plane plane, bool enable)
765 {
766         struct omap_overlay *ovl = omap_dss_get_overlay(plane);
767
768         if ((ovl->caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
769                 return;
770
771         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28);
772 }
773
774 static void dispc_ovl_setup_global_alpha(enum omap_plane plane, u8 global_alpha)
775 {
776         static const unsigned shifts[] = { 0, 8, 16, 24, };
777         int shift;
778         struct omap_overlay *ovl = omap_dss_get_overlay(plane);
779
780         if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
781                 return;
782
783         shift = shifts[plane];
784         REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, shift + 7, shift);
785 }
786
787 static void dispc_ovl_set_pix_inc(enum omap_plane plane, s32 inc)
788 {
789         dispc_write_reg(DISPC_OVL_PIXEL_INC(plane), inc);
790 }
791
792 static void dispc_ovl_set_row_inc(enum omap_plane plane, s32 inc)
793 {
794         dispc_write_reg(DISPC_OVL_ROW_INC(plane), inc);
795 }
796
797 static void dispc_ovl_set_color_mode(enum omap_plane plane,
798                 enum omap_color_mode color_mode)
799 {
800         u32 m = 0;
801         if (plane != OMAP_DSS_GFX) {
802                 switch (color_mode) {
803                 case OMAP_DSS_COLOR_NV12:
804                         m = 0x0; break;
805                 case OMAP_DSS_COLOR_RGB12U:
806                         m = 0x1; break;
807                 case OMAP_DSS_COLOR_RGBA16:
808                         m = 0x2; break;
809                 case OMAP_DSS_COLOR_RGBX16:
810                         m = 0x4; break;
811                 case OMAP_DSS_COLOR_ARGB16:
812                         m = 0x5; break;
813                 case OMAP_DSS_COLOR_RGB16:
814                         m = 0x6; break;
815                 case OMAP_DSS_COLOR_ARGB16_1555:
816                         m = 0x7; break;
817                 case OMAP_DSS_COLOR_RGB24U:
818                         m = 0x8; break;
819                 case OMAP_DSS_COLOR_RGB24P:
820                         m = 0x9; break;
821                 case OMAP_DSS_COLOR_YUV2:
822                         m = 0xa; break;
823                 case OMAP_DSS_COLOR_UYVY:
824                         m = 0xb; break;
825                 case OMAP_DSS_COLOR_ARGB32:
826                         m = 0xc; break;
827                 case OMAP_DSS_COLOR_RGBA32:
828                         m = 0xd; break;
829                 case OMAP_DSS_COLOR_RGBX32:
830                         m = 0xe; break;
831                 case OMAP_DSS_COLOR_XRGB16_1555:
832                         m = 0xf; break;
833                 default:
834                         BUG(); break;
835                 }
836         } else {
837                 switch (color_mode) {
838                 case OMAP_DSS_COLOR_CLUT1:
839                         m = 0x0; break;
840                 case OMAP_DSS_COLOR_CLUT2:
841                         m = 0x1; break;
842                 case OMAP_DSS_COLOR_CLUT4:
843                         m = 0x2; break;
844                 case OMAP_DSS_COLOR_CLUT8:
845                         m = 0x3; break;
846                 case OMAP_DSS_COLOR_RGB12U:
847                         m = 0x4; break;
848                 case OMAP_DSS_COLOR_ARGB16:
849                         m = 0x5; break;
850                 case OMAP_DSS_COLOR_RGB16:
851                         m = 0x6; break;
852                 case OMAP_DSS_COLOR_ARGB16_1555:
853                         m = 0x7; break;
854                 case OMAP_DSS_COLOR_RGB24U:
855                         m = 0x8; break;
856                 case OMAP_DSS_COLOR_RGB24P:
857                         m = 0x9; break;
858                 case OMAP_DSS_COLOR_YUV2:
859                         m = 0xa; break;
860                 case OMAP_DSS_COLOR_UYVY:
861                         m = 0xb; break;
862                 case OMAP_DSS_COLOR_ARGB32:
863                         m = 0xc; break;
864                 case OMAP_DSS_COLOR_RGBA32:
865                         m = 0xd; break;
866                 case OMAP_DSS_COLOR_RGBX32:
867                         m = 0xe; break;
868                 case OMAP_DSS_COLOR_XRGB16_1555:
869                         m = 0xf; break;
870                 default:
871                         BUG(); break;
872                 }
873         }
874
875         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), m, 4, 1);
876 }
877
878 static void dispc_ovl_set_channel_out(enum omap_plane plane,
879                 enum omap_channel channel)
880 {
881         int shift;
882         u32 val;
883         int chan = 0, chan2 = 0;
884
885         switch (plane) {
886         case OMAP_DSS_GFX:
887                 shift = 8;
888                 break;
889         case OMAP_DSS_VIDEO1:
890         case OMAP_DSS_VIDEO2:
891         case OMAP_DSS_VIDEO3:
892                 shift = 16;
893                 break;
894         default:
895                 BUG();
896                 return;
897         }
898
899         val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
900         if (dss_has_feature(FEAT_MGR_LCD2)) {
901                 switch (channel) {
902                 case OMAP_DSS_CHANNEL_LCD:
903                         chan = 0;
904                         chan2 = 0;
905                         break;
906                 case OMAP_DSS_CHANNEL_DIGIT:
907                         chan = 1;
908                         chan2 = 0;
909                         break;
910                 case OMAP_DSS_CHANNEL_LCD2:
911                         chan = 0;
912                         chan2 = 1;
913                         break;
914                 default:
915                         BUG();
916                 }
917
918                 val = FLD_MOD(val, chan, shift, shift);
919                 val = FLD_MOD(val, chan2, 31, 30);
920         } else {
921                 val = FLD_MOD(val, channel, shift, shift);
922         }
923         dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
924 }
925
926 static void dispc_ovl_set_burst_size(enum omap_plane plane,
927                 enum omap_burst_size burst_size)
928 {
929         static const unsigned shifts[] = { 6, 14, 14, 14, };
930         int shift;
931
932         shift = shifts[plane];
933         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), burst_size, shift + 1, shift);
934 }
935
936 static void dispc_configure_burst_sizes(void)
937 {
938         int i;
939         const int burst_size = BURST_SIZE_X8;
940
941         /* Configure burst size always to maximum size */
942         for (i = 0; i < omap_dss_get_num_overlays(); ++i)
943                 dispc_ovl_set_burst_size(i, burst_size);
944 }
945
946 u32 dispc_ovl_get_burst_size(enum omap_plane plane)
947 {
948         unsigned unit = dss_feat_get_burst_size_unit();
949         /* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */
950         return unit * 8;
951 }
952
953 void dispc_enable_gamma_table(bool enable)
954 {
955         /*
956          * This is partially implemented to support only disabling of
957          * the gamma table.
958          */
959         if (enable) {
960                 DSSWARN("Gamma table enabling for TV not yet supported");
961                 return;
962         }
963
964         REG_FLD_MOD(DISPC_CONFIG, enable, 9, 9);
965 }
966
967 void dispc_mgr_enable_cpr(enum omap_channel channel, bool enable)
968 {
969         u16 reg;
970
971         if (channel == OMAP_DSS_CHANNEL_LCD)
972                 reg = DISPC_CONFIG;
973         else if (channel == OMAP_DSS_CHANNEL_LCD2)
974                 reg = DISPC_CONFIG2;
975         else
976                 return;
977
978         REG_FLD_MOD(reg, enable, 15, 15);
979 }
980
981 void dispc_mgr_set_cpr_coef(enum omap_channel channel,
982                 struct omap_dss_cpr_coefs *coefs)
983 {
984         u32 coef_r, coef_g, coef_b;
985
986         if (!dispc_mgr_is_lcd(channel))
987                 return;
988
989         coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) |
990                 FLD_VAL(coefs->rb, 9, 0);
991         coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) |
992                 FLD_VAL(coefs->gb, 9, 0);
993         coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) |
994                 FLD_VAL(coefs->bb, 9, 0);
995
996         dispc_write_reg(DISPC_CPR_COEF_R(channel), coef_r);
997         dispc_write_reg(DISPC_CPR_COEF_G(channel), coef_g);
998         dispc_write_reg(DISPC_CPR_COEF_B(channel), coef_b);
999 }
1000
1001 static void dispc_ovl_set_vid_color_conv(enum omap_plane plane, bool enable)
1002 {
1003         u32 val;
1004
1005         BUG_ON(plane == OMAP_DSS_GFX);
1006
1007         val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1008         val = FLD_MOD(val, enable, 9, 9);
1009         dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
1010 }
1011
1012 static void dispc_ovl_enable_replication(enum omap_plane plane, bool enable)
1013 {
1014         static const unsigned shifts[] = { 5, 10, 10, 10 };
1015         int shift;
1016
1017         shift = shifts[plane];
1018         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, shift, shift);
1019 }
1020
1021 void dispc_mgr_set_lcd_size(enum omap_channel channel, u16 width, u16 height)
1022 {
1023         u32 val;
1024         BUG_ON((width > (1 << 11)) || (height > (1 << 11)));
1025         val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
1026         dispc_write_reg(DISPC_SIZE_MGR(channel), val);
1027 }
1028
1029 void dispc_set_digit_size(u16 width, u16 height)
1030 {
1031         u32 val;
1032         BUG_ON((width > (1 << 11)) || (height > (1 << 11)));
1033         val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
1034         dispc_write_reg(DISPC_SIZE_MGR(OMAP_DSS_CHANNEL_DIGIT), val);
1035 }
1036
1037 static void dispc_read_plane_fifo_sizes(void)
1038 {
1039         u32 size;
1040         int plane;
1041         u8 start, end;
1042         u32 unit;
1043
1044         unit = dss_feat_get_buffer_size_unit();
1045
1046         dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end);
1047
1048         for (plane = 0; plane < dss_feat_get_num_ovls(); ++plane) {
1049                 size = REG_GET(DISPC_OVL_FIFO_SIZE_STATUS(plane), start, end);
1050                 size *= unit;
1051                 dispc.fifo_size[plane] = size;
1052         }
1053 }
1054
1055 u32 dispc_ovl_get_fifo_size(enum omap_plane plane)
1056 {
1057         return dispc.fifo_size[plane];
1058 }
1059
1060 static void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low,
1061                 u32 high)
1062 {
1063         u8 hi_start, hi_end, lo_start, lo_end;
1064         u32 unit;
1065
1066         unit = dss_feat_get_buffer_size_unit();
1067
1068         WARN_ON(low % unit != 0);
1069         WARN_ON(high % unit != 0);
1070
1071         low /= unit;
1072         high /= unit;
1073
1074         dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end);
1075         dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end);
1076
1077         DSSDBG("fifo(%d) low/high old %u/%u, new %u/%u\n",
1078                         plane,
1079                         REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
1080                                 lo_start, lo_end),
1081                         REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
1082                                 hi_start, hi_end),
1083                         low, high);
1084
1085         dispc_write_reg(DISPC_OVL_FIFO_THRESHOLD(plane),
1086                         FLD_VAL(high, hi_start, hi_end) |
1087                         FLD_VAL(low, lo_start, lo_end));
1088 }
1089
1090 void dispc_enable_fifomerge(bool enable)
1091 {
1092         DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled");
1093         REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14);
1094 }
1095
1096 static void dispc_ovl_set_fir(enum omap_plane plane,
1097                                 int hinc, int vinc,
1098                                 enum omap_color_component color_comp)
1099 {
1100         u32 val;
1101
1102         if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
1103                 u8 hinc_start, hinc_end, vinc_start, vinc_end;
1104
1105                 dss_feat_get_reg_field(FEAT_REG_FIRHINC,
1106                                         &hinc_start, &hinc_end);
1107                 dss_feat_get_reg_field(FEAT_REG_FIRVINC,
1108                                         &vinc_start, &vinc_end);
1109                 val = FLD_VAL(vinc, vinc_start, vinc_end) |
1110                                 FLD_VAL(hinc, hinc_start, hinc_end);
1111
1112                 dispc_write_reg(DISPC_OVL_FIR(plane), val);
1113         } else {
1114                 val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0);
1115                 dispc_write_reg(DISPC_OVL_FIR2(plane), val);
1116         }
1117 }
1118
1119 static void dispc_ovl_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu)
1120 {
1121         u32 val;
1122         u8 hor_start, hor_end, vert_start, vert_end;
1123
1124         dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
1125         dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
1126
1127         val = FLD_VAL(vaccu, vert_start, vert_end) |
1128                         FLD_VAL(haccu, hor_start, hor_end);
1129
1130         dispc_write_reg(DISPC_OVL_ACCU0(plane), val);
1131 }
1132
1133 static void dispc_ovl_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu)
1134 {
1135         u32 val;
1136         u8 hor_start, hor_end, vert_start, vert_end;
1137
1138         dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
1139         dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
1140
1141         val = FLD_VAL(vaccu, vert_start, vert_end) |
1142                         FLD_VAL(haccu, hor_start, hor_end);
1143
1144         dispc_write_reg(DISPC_OVL_ACCU1(plane), val);
1145 }
1146
1147 static void dispc_ovl_set_vid_accu2_0(enum omap_plane plane, int haccu,
1148                 int vaccu)
1149 {
1150         u32 val;
1151
1152         val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1153         dispc_write_reg(DISPC_OVL_ACCU2_0(plane), val);
1154 }
1155
1156 static void dispc_ovl_set_vid_accu2_1(enum omap_plane plane, int haccu,
1157                 int vaccu)
1158 {
1159         u32 val;
1160
1161         val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1162         dispc_write_reg(DISPC_OVL_ACCU2_1(plane), val);
1163 }
1164
1165 static void dispc_ovl_set_scale_param(enum omap_plane plane,
1166                 u16 orig_width, u16 orig_height,
1167                 u16 out_width, u16 out_height,
1168                 bool five_taps, u8 rotation,
1169                 enum omap_color_component color_comp)
1170 {
1171         int fir_hinc, fir_vinc;
1172         int hscaleup, vscaleup;
1173
1174         hscaleup = orig_width <= out_width;
1175         vscaleup = orig_height <= out_height;
1176
1177         dispc_ovl_set_scale_coef(plane, hscaleup, vscaleup, five_taps,
1178                         color_comp);
1179
1180         fir_hinc = 1024 * orig_width / out_width;
1181         fir_vinc = 1024 * orig_height / out_height;
1182
1183         dispc_ovl_set_fir(plane, fir_hinc, fir_vinc, color_comp);
1184 }
1185
1186 static void dispc_ovl_set_scaling_common(enum omap_plane plane,
1187                 u16 orig_width, u16 orig_height,
1188                 u16 out_width, u16 out_height,
1189                 bool ilace, bool five_taps,
1190                 bool fieldmode, enum omap_color_mode color_mode,
1191                 u8 rotation)
1192 {
1193         int accu0 = 0;
1194         int accu1 = 0;
1195         u32 l;
1196
1197         dispc_ovl_set_scale_param(plane, orig_width, orig_height,
1198                                 out_width, out_height, five_taps,
1199                                 rotation, DISPC_COLOR_COMPONENT_RGB_Y);
1200         l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1201
1202         /* RESIZEENABLE and VERTICALTAPS */
1203         l &= ~((0x3 << 5) | (0x1 << 21));
1204         l |= (orig_width != out_width) ? (1 << 5) : 0;
1205         l |= (orig_height != out_height) ? (1 << 6) : 0;
1206         l |= five_taps ? (1 << 21) : 0;
1207
1208         /* VRESIZECONF and HRESIZECONF */
1209         if (dss_has_feature(FEAT_RESIZECONF)) {
1210                 l &= ~(0x3 << 7);
1211                 l |= (orig_width <= out_width) ? 0 : (1 << 7);
1212                 l |= (orig_height <= out_height) ? 0 : (1 << 8);
1213         }
1214
1215         /* LINEBUFFERSPLIT */
1216         if (dss_has_feature(FEAT_LINEBUFFERSPLIT)) {
1217                 l &= ~(0x1 << 22);
1218                 l |= five_taps ? (1 << 22) : 0;
1219         }
1220
1221         dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
1222
1223         /*
1224          * field 0 = even field = bottom field
1225          * field 1 = odd field = top field
1226          */
1227         if (ilace && !fieldmode) {
1228                 accu1 = 0;
1229                 accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff;
1230                 if (accu0 >= 1024/2) {
1231                         accu1 = 1024/2;
1232                         accu0 -= accu1;
1233                 }
1234         }
1235
1236         dispc_ovl_set_vid_accu0(plane, 0, accu0);
1237         dispc_ovl_set_vid_accu1(plane, 0, accu1);
1238 }
1239
1240 static void dispc_ovl_set_scaling_uv(enum omap_plane plane,
1241                 u16 orig_width, u16 orig_height,
1242                 u16 out_width, u16 out_height,
1243                 bool ilace, bool five_taps,
1244                 bool fieldmode, enum omap_color_mode color_mode,
1245                 u8 rotation)
1246 {
1247         int scale_x = out_width != orig_width;
1248         int scale_y = out_height != orig_height;
1249
1250         if (!dss_has_feature(FEAT_HANDLE_UV_SEPARATE))
1251                 return;
1252         if ((color_mode != OMAP_DSS_COLOR_YUV2 &&
1253                         color_mode != OMAP_DSS_COLOR_UYVY &&
1254                         color_mode != OMAP_DSS_COLOR_NV12)) {
1255                 /* reset chroma resampling for RGB formats  */
1256                 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 8, 8);
1257                 return;
1258         }
1259         switch (color_mode) {
1260         case OMAP_DSS_COLOR_NV12:
1261                 /* UV is subsampled by 2 vertically*/
1262                 orig_height >>= 1;
1263                 /* UV is subsampled by 2 horz.*/
1264                 orig_width >>= 1;
1265                 break;
1266         case OMAP_DSS_COLOR_YUV2:
1267         case OMAP_DSS_COLOR_UYVY:
1268                 /*For YUV422 with 90/270 rotation,
1269                  *we don't upsample chroma
1270                  */
1271                 if (rotation == OMAP_DSS_ROT_0 ||
1272                         rotation == OMAP_DSS_ROT_180)
1273                         /* UV is subsampled by 2 hrz*/
1274                         orig_width >>= 1;
1275                 /* must use FIR for YUV422 if rotated */
1276                 if (rotation != OMAP_DSS_ROT_0)
1277                         scale_x = scale_y = true;
1278                 break;
1279         default:
1280                 BUG();
1281         }
1282
1283         if (out_width != orig_width)
1284                 scale_x = true;
1285         if (out_height != orig_height)
1286                 scale_y = true;
1287
1288         dispc_ovl_set_scale_param(plane, orig_width, orig_height,
1289                         out_width, out_height, five_taps,
1290                                 rotation, DISPC_COLOR_COMPONENT_UV);
1291
1292         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane),
1293                 (scale_x || scale_y) ? 1 : 0, 8, 8);
1294         /* set H scaling */
1295         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5);
1296         /* set V scaling */
1297         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6);
1298
1299         dispc_ovl_set_vid_accu2_0(plane, 0x80, 0);
1300         dispc_ovl_set_vid_accu2_1(plane, 0x80, 0);
1301 }
1302
1303 static void dispc_ovl_set_scaling(enum omap_plane plane,
1304                 u16 orig_width, u16 orig_height,
1305                 u16 out_width, u16 out_height,
1306                 bool ilace, bool five_taps,
1307                 bool fieldmode, enum omap_color_mode color_mode,
1308                 u8 rotation)
1309 {
1310         BUG_ON(plane == OMAP_DSS_GFX);
1311
1312         dispc_ovl_set_scaling_common(plane,
1313                         orig_width, orig_height,
1314                         out_width, out_height,
1315                         ilace, five_taps,
1316                         fieldmode, color_mode,
1317                         rotation);
1318
1319         dispc_ovl_set_scaling_uv(plane,
1320                 orig_width, orig_height,
1321                 out_width, out_height,
1322                 ilace, five_taps,
1323                 fieldmode, color_mode,
1324                 rotation);
1325 }
1326
1327 static void dispc_ovl_set_rotation_attrs(enum omap_plane plane, u8 rotation,
1328                 bool mirroring, enum omap_color_mode color_mode)
1329 {
1330         bool row_repeat = false;
1331         int vidrot = 0;
1332
1333         if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1334                         color_mode == OMAP_DSS_COLOR_UYVY) {
1335
1336                 if (mirroring) {
1337                         switch (rotation) {
1338                         case OMAP_DSS_ROT_0:
1339                                 vidrot = 2;
1340                                 break;
1341                         case OMAP_DSS_ROT_90:
1342                                 vidrot = 1;
1343                                 break;
1344                         case OMAP_DSS_ROT_180:
1345                                 vidrot = 0;
1346                                 break;
1347                         case OMAP_DSS_ROT_270:
1348                                 vidrot = 3;
1349                                 break;
1350                         }
1351                 } else {
1352                         switch (rotation) {
1353                         case OMAP_DSS_ROT_0:
1354                                 vidrot = 0;
1355                                 break;
1356                         case OMAP_DSS_ROT_90:
1357                                 vidrot = 1;
1358                                 break;
1359                         case OMAP_DSS_ROT_180:
1360                                 vidrot = 2;
1361                                 break;
1362                         case OMAP_DSS_ROT_270:
1363                                 vidrot = 3;
1364                                 break;
1365                         }
1366                 }
1367
1368                 if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270)
1369                         row_repeat = true;
1370                 else
1371                         row_repeat = false;
1372         }
1373
1374         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12);
1375         if (dss_has_feature(FEAT_ROWREPEATENABLE))
1376                 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane),
1377                         row_repeat ? 1 : 0, 18, 18);
1378 }
1379
1380 static int color_mode_to_bpp(enum omap_color_mode color_mode)
1381 {
1382         switch (color_mode) {
1383         case OMAP_DSS_COLOR_CLUT1:
1384                 return 1;
1385         case OMAP_DSS_COLOR_CLUT2:
1386                 return 2;
1387         case OMAP_DSS_COLOR_CLUT4:
1388                 return 4;
1389         case OMAP_DSS_COLOR_CLUT8:
1390         case OMAP_DSS_COLOR_NV12:
1391                 return 8;
1392         case OMAP_DSS_COLOR_RGB12U:
1393         case OMAP_DSS_COLOR_RGB16:
1394         case OMAP_DSS_COLOR_ARGB16:
1395         case OMAP_DSS_COLOR_YUV2:
1396         case OMAP_DSS_COLOR_UYVY:
1397         case OMAP_DSS_COLOR_RGBA16:
1398         case OMAP_DSS_COLOR_RGBX16:
1399         case OMAP_DSS_COLOR_ARGB16_1555:
1400         case OMAP_DSS_COLOR_XRGB16_1555:
1401                 return 16;
1402         case OMAP_DSS_COLOR_RGB24P:
1403                 return 24;
1404         case OMAP_DSS_COLOR_RGB24U:
1405         case OMAP_DSS_COLOR_ARGB32:
1406         case OMAP_DSS_COLOR_RGBA32:
1407         case OMAP_DSS_COLOR_RGBX32:
1408                 return 32;
1409         default:
1410                 BUG();
1411         }
1412 }
1413
1414 static s32 pixinc(int pixels, u8 ps)
1415 {
1416         if (pixels == 1)
1417                 return 1;
1418         else if (pixels > 1)
1419                 return 1 + (pixels - 1) * ps;
1420         else if (pixels < 0)
1421                 return 1 - (-pixels + 1) * ps;
1422         else
1423                 BUG();
1424 }
1425
1426 static void calc_vrfb_rotation_offset(u8 rotation, bool mirror,
1427                 u16 screen_width,
1428                 u16 width, u16 height,
1429                 enum omap_color_mode color_mode, bool fieldmode,
1430                 unsigned int field_offset,
1431                 unsigned *offset0, unsigned *offset1,
1432                 s32 *row_inc, s32 *pix_inc)
1433 {
1434         u8 ps;
1435
1436         /* FIXME CLUT formats */
1437         switch (color_mode) {
1438         case OMAP_DSS_COLOR_CLUT1:
1439         case OMAP_DSS_COLOR_CLUT2:
1440         case OMAP_DSS_COLOR_CLUT4:
1441         case OMAP_DSS_COLOR_CLUT8:
1442                 BUG();
1443                 return;
1444         case OMAP_DSS_COLOR_YUV2:
1445         case OMAP_DSS_COLOR_UYVY:
1446                 ps = 4;
1447                 break;
1448         default:
1449                 ps = color_mode_to_bpp(color_mode) / 8;
1450                 break;
1451         }
1452
1453         DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
1454                         width, height);
1455
1456         /*
1457          * field 0 = even field = bottom field
1458          * field 1 = odd field = top field
1459          */
1460         switch (rotation + mirror * 4) {
1461         case OMAP_DSS_ROT_0:
1462         case OMAP_DSS_ROT_180:
1463                 /*
1464                  * If the pixel format is YUV or UYVY divide the width
1465                  * of the image by 2 for 0 and 180 degree rotation.
1466                  */
1467                 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1468                         color_mode == OMAP_DSS_COLOR_UYVY)
1469                         width = width >> 1;
1470         case OMAP_DSS_ROT_90:
1471         case OMAP_DSS_ROT_270:
1472                 *offset1 = 0;
1473                 if (field_offset)
1474                         *offset0 = field_offset * screen_width * ps;
1475                 else
1476                         *offset0 = 0;
1477
1478                 *row_inc = pixinc(1 + (screen_width - width) +
1479                                 (fieldmode ? screen_width : 0),
1480                                 ps);
1481                 *pix_inc = pixinc(1, ps);
1482                 break;
1483
1484         case OMAP_DSS_ROT_0 + 4:
1485         case OMAP_DSS_ROT_180 + 4:
1486                 /* If the pixel format is YUV or UYVY divide the width
1487                  * of the image by 2  for 0 degree and 180 degree
1488                  */
1489                 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1490                         color_mode == OMAP_DSS_COLOR_UYVY)
1491                         width = width >> 1;
1492         case OMAP_DSS_ROT_90 + 4:
1493         case OMAP_DSS_ROT_270 + 4:
1494                 *offset1 = 0;
1495                 if (field_offset)
1496                         *offset0 = field_offset * screen_width * ps;
1497                 else
1498                         *offset0 = 0;
1499                 *row_inc = pixinc(1 - (screen_width + width) -
1500                                 (fieldmode ? screen_width : 0),
1501                                 ps);
1502                 *pix_inc = pixinc(1, ps);
1503                 break;
1504
1505         default:
1506                 BUG();
1507         }
1508 }
1509
1510 static void calc_dma_rotation_offset(u8 rotation, bool mirror,
1511                 u16 screen_width,
1512                 u16 width, u16 height,
1513                 enum omap_color_mode color_mode, bool fieldmode,
1514                 unsigned int field_offset,
1515                 unsigned *offset0, unsigned *offset1,
1516                 s32 *row_inc, s32 *pix_inc)
1517 {
1518         u8 ps;
1519         u16 fbw, fbh;
1520
1521         /* FIXME CLUT formats */
1522         switch (color_mode) {
1523         case OMAP_DSS_COLOR_CLUT1:
1524         case OMAP_DSS_COLOR_CLUT2:
1525         case OMAP_DSS_COLOR_CLUT4:
1526         case OMAP_DSS_COLOR_CLUT8:
1527                 BUG();
1528                 return;
1529         default:
1530                 ps = color_mode_to_bpp(color_mode) / 8;
1531                 break;
1532         }
1533
1534         DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
1535                         width, height);
1536
1537         /* width & height are overlay sizes, convert to fb sizes */
1538
1539         if (rotation == OMAP_DSS_ROT_0 || rotation == OMAP_DSS_ROT_180) {
1540                 fbw = width;
1541                 fbh = height;
1542         } else {
1543                 fbw = height;
1544                 fbh = width;
1545         }
1546
1547         /*
1548          * field 0 = even field = bottom field
1549          * field 1 = odd field = top field
1550          */
1551         switch (rotation + mirror * 4) {
1552         case OMAP_DSS_ROT_0:
1553                 *offset1 = 0;
1554                 if (field_offset)
1555                         *offset0 = *offset1 + field_offset * screen_width * ps;
1556                 else
1557                         *offset0 = *offset1;
1558                 *row_inc = pixinc(1 + (screen_width - fbw) +
1559                                 (fieldmode ? screen_width : 0),
1560                                 ps);
1561                 *pix_inc = pixinc(1, ps);
1562                 break;
1563         case OMAP_DSS_ROT_90:
1564                 *offset1 = screen_width * (fbh - 1) * ps;
1565                 if (field_offset)
1566                         *offset0 = *offset1 + field_offset * ps;
1567                 else
1568                         *offset0 = *offset1;
1569                 *row_inc = pixinc(screen_width * (fbh - 1) + 1 +
1570                                 (fieldmode ? 1 : 0), ps);
1571                 *pix_inc = pixinc(-screen_width, ps);
1572                 break;
1573         case OMAP_DSS_ROT_180:
1574                 *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
1575                 if (field_offset)
1576                         *offset0 = *offset1 - field_offset * screen_width * ps;
1577                 else
1578                         *offset0 = *offset1;
1579                 *row_inc = pixinc(-1 -
1580                                 (screen_width - fbw) -
1581                                 (fieldmode ? screen_width : 0),
1582                                 ps);
1583                 *pix_inc = pixinc(-1, ps);
1584                 break;
1585         case OMAP_DSS_ROT_270:
1586                 *offset1 = (fbw - 1) * ps;
1587                 if (field_offset)
1588                         *offset0 = *offset1 - field_offset * ps;
1589                 else
1590                         *offset0 = *offset1;
1591                 *row_inc = pixinc(-screen_width * (fbh - 1) - 1 -
1592                                 (fieldmode ? 1 : 0), ps);
1593                 *pix_inc = pixinc(screen_width, ps);
1594                 break;
1595
1596         /* mirroring */
1597         case OMAP_DSS_ROT_0 + 4:
1598                 *offset1 = (fbw - 1) * ps;
1599                 if (field_offset)
1600                         *offset0 = *offset1 + field_offset * screen_width * ps;
1601                 else
1602                         *offset0 = *offset1;
1603                 *row_inc = pixinc(screen_width * 2 - 1 +
1604                                 (fieldmode ? screen_width : 0),
1605                                 ps);
1606                 *pix_inc = pixinc(-1, ps);
1607                 break;
1608
1609         case OMAP_DSS_ROT_90 + 4:
1610                 *offset1 = 0;
1611                 if (field_offset)
1612                         *offset0 = *offset1 + field_offset * ps;
1613                 else
1614                         *offset0 = *offset1;
1615                 *row_inc = pixinc(-screen_width * (fbh - 1) + 1 +
1616                                 (fieldmode ? 1 : 0),
1617                                 ps);
1618                 *pix_inc = pixinc(screen_width, ps);
1619                 break;
1620
1621         case OMAP_DSS_ROT_180 + 4:
1622                 *offset1 = screen_width * (fbh - 1) * ps;
1623                 if (field_offset)
1624                         *offset0 = *offset1 - field_offset * screen_width * ps;
1625                 else
1626                         *offset0 = *offset1;
1627                 *row_inc = pixinc(1 - screen_width * 2 -
1628                                 (fieldmode ? screen_width : 0),
1629                                 ps);
1630                 *pix_inc = pixinc(1, ps);
1631                 break;
1632
1633         case OMAP_DSS_ROT_270 + 4:
1634                 *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
1635                 if (field_offset)
1636                         *offset0 = *offset1 - field_offset * ps;
1637                 else
1638                         *offset0 = *offset1;
1639                 *row_inc = pixinc(screen_width * (fbh - 1) - 1 -
1640                                 (fieldmode ? 1 : 0),
1641                                 ps);
1642                 *pix_inc = pixinc(-screen_width, ps);
1643                 break;
1644
1645         default:
1646                 BUG();
1647         }
1648 }
1649
1650 static unsigned long calc_fclk_five_taps(enum omap_channel channel, u16 width,
1651                 u16 height, u16 out_width, u16 out_height,
1652                 enum omap_color_mode color_mode)
1653 {
1654         u32 fclk = 0;
1655         u64 tmp, pclk = dispc_mgr_pclk_rate(channel);
1656
1657         if (height > out_height) {
1658                 struct omap_dss_device *dssdev = dispc_mgr_get_device(channel);
1659                 unsigned int ppl = dssdev->panel.timings.x_res;
1660
1661                 tmp = pclk * height * out_width;
1662                 do_div(tmp, 2 * out_height * ppl);
1663                 fclk = tmp;
1664
1665                 if (height > 2 * out_height) {
1666                         if (ppl == out_width)
1667                                 return 0;
1668
1669                         tmp = pclk * (height - 2 * out_height) * out_width;
1670                         do_div(tmp, 2 * out_height * (ppl - out_width));
1671                         fclk = max(fclk, (u32) tmp);
1672                 }
1673         }
1674
1675         if (width > out_width) {
1676                 tmp = pclk * width;
1677                 do_div(tmp, out_width);
1678                 fclk = max(fclk, (u32) tmp);
1679
1680                 if (color_mode == OMAP_DSS_COLOR_RGB24U)
1681                         fclk <<= 1;
1682         }
1683
1684         return fclk;
1685 }
1686
1687 static unsigned long calc_fclk(enum omap_channel channel, u16 width,
1688                 u16 height, u16 out_width, u16 out_height)
1689 {
1690         unsigned int hf, vf;
1691
1692         /*
1693          * FIXME how to determine the 'A' factor
1694          * for the no downscaling case ?
1695          */
1696
1697         if (width > 3 * out_width)
1698                 hf = 4;
1699         else if (width > 2 * out_width)
1700                 hf = 3;
1701         else if (width > out_width)
1702                 hf = 2;
1703         else
1704                 hf = 1;
1705
1706         if (height > out_height)
1707                 vf = 2;
1708         else
1709                 vf = 1;
1710
1711         return dispc_mgr_pclk_rate(channel) * vf * hf;
1712 }
1713
1714 static int dispc_ovl_calc_scaling(enum omap_plane plane,
1715                 enum omap_channel channel, u16 width, u16 height,
1716                 u16 out_width, u16 out_height,
1717                 enum omap_color_mode color_mode, bool *five_taps)
1718 {
1719         struct omap_overlay *ovl = omap_dss_get_overlay(plane);
1720         const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
1721         unsigned long fclk = 0;
1722
1723         if (width == out_width && height == out_height)
1724                 return 0;
1725
1726         if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0)
1727                 return -EINVAL;
1728
1729         if (out_width < width / maxdownscale ||
1730                         out_width > width * 8)
1731                 return -EINVAL;
1732
1733         if (out_height < height / maxdownscale ||
1734                         out_height > height * 8)
1735                 return -EINVAL;
1736
1737         /* Must use 5-tap filter? */
1738         *five_taps = height > out_height * 2;
1739
1740         if (!*five_taps) {
1741                 fclk = calc_fclk(channel, width, height, out_width,
1742                                 out_height);
1743
1744                 /* Try 5-tap filter if 3-tap fclk is too high */
1745                 if (cpu_is_omap34xx() && height > out_height &&
1746                                 fclk > dispc_fclk_rate())
1747                         *five_taps = true;
1748         }
1749
1750         if (width > (2048 >> *five_taps)) {
1751                 DSSERR("failed to set up scaling, fclk too low\n");
1752                 return -EINVAL;
1753         }
1754
1755         if (*five_taps)
1756                 fclk = calc_fclk_five_taps(channel, width, height,
1757                                 out_width, out_height, color_mode);
1758
1759         DSSDBG("required fclk rate = %lu Hz\n", fclk);
1760         DSSDBG("current fclk rate = %lu Hz\n", dispc_fclk_rate());
1761
1762         if (!fclk || fclk > dispc_fclk_rate()) {
1763                 DSSERR("failed to set up scaling, "
1764                         "required fclk rate = %lu Hz, "
1765                         "current fclk rate = %lu Hz\n",
1766                         fclk, dispc_fclk_rate());
1767                 return -EINVAL;
1768         }
1769
1770         return 0;
1771 }
1772
1773 int dispc_ovl_setup(enum omap_plane plane, struct omap_overlay_info *oi,
1774                 bool ilace, enum omap_channel channel, bool replication,
1775                 u32 fifo_low, u32 fifo_high)
1776 {
1777         struct omap_overlay *ovl = omap_dss_get_overlay(plane);
1778         bool five_taps = false;
1779         bool fieldmode = 0;
1780         int r, cconv = 0;
1781         unsigned offset0, offset1;
1782         s32 row_inc;
1783         s32 pix_inc;
1784         u16 frame_height = oi->height;
1785         unsigned int field_offset = 0;
1786
1787         DSSDBG("dispc_ovl_setup %d, pa %x, pa_uv %x, sw %d, %d,%d, %dx%d -> "
1788                 "%dx%d, cmode %x, rot %d, mir %d, ilace %d chan %d repl %d "
1789                 "fifo_low %d fifo high %d\n", plane, oi->paddr, oi->p_uv_addr,
1790                 oi->screen_width, oi->pos_x, oi->pos_y, oi->width, oi->height,
1791                 oi->out_width, oi->out_height, oi->color_mode, oi->rotation,
1792                 oi->mirror, ilace, channel, replication, fifo_low, fifo_high);
1793
1794         if (oi->paddr == 0)
1795                 return -EINVAL;
1796
1797         if (ilace && oi->height == oi->out_height)
1798                 fieldmode = 1;
1799
1800         if (ilace) {
1801                 if (fieldmode)
1802                         oi->height /= 2;
1803                 oi->pos_y /= 2;
1804                 oi->out_height /= 2;
1805
1806                 DSSDBG("adjusting for ilace: height %d, pos_y %d, "
1807                                 "out_height %d\n",
1808                                 oi->height, oi->pos_y, oi->out_height);
1809         }
1810
1811         if (!dss_feat_color_mode_supported(plane, oi->color_mode))
1812                 return -EINVAL;
1813
1814         r = dispc_ovl_calc_scaling(plane, channel, oi->width, oi->height,
1815                         oi->out_width, oi->out_height, oi->color_mode,
1816                         &five_taps);
1817         if (r)
1818                 return r;
1819
1820         if (oi->color_mode == OMAP_DSS_COLOR_YUV2 ||
1821                         oi->color_mode == OMAP_DSS_COLOR_UYVY ||
1822                         oi->color_mode == OMAP_DSS_COLOR_NV12)
1823                 cconv = 1;
1824
1825         if (ilace && !fieldmode) {
1826                 /*
1827                  * when downscaling the bottom field may have to start several
1828                  * source lines below the top field. Unfortunately ACCUI
1829                  * registers will only hold the fractional part of the offset
1830                  * so the integer part must be added to the base address of the
1831                  * bottom field.
1832                  */
1833                 if (!oi->height || oi->height == oi->out_height)
1834                         field_offset = 0;
1835                 else
1836                         field_offset = oi->height / oi->out_height / 2;
1837         }
1838
1839         /* Fields are independent but interleaved in memory. */
1840         if (fieldmode)
1841                 field_offset = 1;
1842
1843         if (oi->rotation_type == OMAP_DSS_ROT_DMA)
1844                 calc_dma_rotation_offset(oi->rotation, oi->mirror,
1845                                 oi->screen_width, oi->width, frame_height,
1846                                 oi->color_mode, fieldmode, field_offset,
1847                                 &offset0, &offset1, &row_inc, &pix_inc);
1848         else
1849                 calc_vrfb_rotation_offset(oi->rotation, oi->mirror,
1850                                 oi->screen_width, oi->width, frame_height,
1851                                 oi->color_mode, fieldmode, field_offset,
1852                                 &offset0, &offset1, &row_inc, &pix_inc);
1853
1854         DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n",
1855                         offset0, offset1, row_inc, pix_inc);
1856
1857         dispc_ovl_set_color_mode(plane, oi->color_mode);
1858
1859         dispc_ovl_set_ba0(plane, oi->paddr + offset0);
1860         dispc_ovl_set_ba1(plane, oi->paddr + offset1);
1861
1862         if (OMAP_DSS_COLOR_NV12 == oi->color_mode) {
1863                 dispc_ovl_set_ba0_uv(plane, oi->p_uv_addr + offset0);
1864                 dispc_ovl_set_ba1_uv(plane, oi->p_uv_addr + offset1);
1865         }
1866
1867
1868         dispc_ovl_set_row_inc(plane, row_inc);
1869         dispc_ovl_set_pix_inc(plane, pix_inc);
1870
1871         DSSDBG("%d,%d %dx%d -> %dx%d\n", oi->pos_x, oi->pos_y, oi->width,
1872                         oi->height, oi->out_width, oi->out_height);
1873
1874         dispc_ovl_set_pos(plane, oi->pos_x, oi->pos_y);
1875
1876         dispc_ovl_set_pic_size(plane, oi->width, oi->height);
1877
1878         if (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) {
1879                 dispc_ovl_set_scaling(plane, oi->width, oi->height,
1880                                    oi->out_width, oi->out_height,
1881                                    ilace, five_taps, fieldmode,
1882                                    oi->color_mode, oi->rotation);
1883                 dispc_ovl_set_vid_size(plane, oi->out_width, oi->out_height);
1884                 dispc_ovl_set_vid_color_conv(plane, cconv);
1885         }
1886
1887         dispc_ovl_set_rotation_attrs(plane, oi->rotation, oi->mirror,
1888                         oi->color_mode);
1889
1890         dispc_ovl_set_zorder(plane, oi->zorder);
1891         dispc_ovl_set_pre_mult_alpha(plane, oi->pre_mult_alpha);
1892         dispc_ovl_setup_global_alpha(plane, oi->global_alpha);
1893
1894         dispc_ovl_set_channel_out(plane, channel);
1895
1896         dispc_ovl_enable_replication(plane, replication);
1897         dispc_ovl_set_fifo_threshold(plane, fifo_low, fifo_high);
1898
1899         return 0;
1900 }
1901
1902 int dispc_ovl_enable(enum omap_plane plane, bool enable)
1903 {
1904         DSSDBG("dispc_enable_plane %d, %d\n", plane, enable);
1905
1906         REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0);
1907
1908         return 0;
1909 }
1910
1911 static void dispc_disable_isr(void *data, u32 mask)
1912 {
1913         struct completion *compl = data;
1914         complete(compl);
1915 }
1916
1917 static void _enable_lcd_out(enum omap_channel channel, bool enable)
1918 {
1919         if (channel == OMAP_DSS_CHANNEL_LCD2)
1920                 REG_FLD_MOD(DISPC_CONTROL2, enable ? 1 : 0, 0, 0);
1921         else
1922                 REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 0, 0);
1923 }
1924
1925 static void dispc_mgr_enable_lcd_out(enum omap_channel channel, bool enable)
1926 {
1927         struct completion frame_done_completion;
1928         bool is_on;
1929         int r;
1930         u32 irq;
1931
1932         /* When we disable LCD output, we need to wait until frame is done.
1933          * Otherwise the DSS is still working, and turning off the clocks
1934          * prevents DSS from going to OFF mode */
1935         is_on = channel == OMAP_DSS_CHANNEL_LCD2 ?
1936                         REG_GET(DISPC_CONTROL2, 0, 0) :
1937                         REG_GET(DISPC_CONTROL, 0, 0);
1938
1939         irq = channel == OMAP_DSS_CHANNEL_LCD2 ? DISPC_IRQ_FRAMEDONE2 :
1940                         DISPC_IRQ_FRAMEDONE;
1941
1942         if (!enable && is_on) {
1943                 init_completion(&frame_done_completion);
1944
1945                 r = omap_dispc_register_isr(dispc_disable_isr,
1946                                 &frame_done_completion, irq);
1947
1948                 if (r)
1949                         DSSERR("failed to register FRAMEDONE isr\n");
1950         }
1951
1952         _enable_lcd_out(channel, enable);
1953
1954         if (!enable && is_on) {
1955                 if (!wait_for_completion_timeout(&frame_done_completion,
1956                                         msecs_to_jiffies(100)))
1957                         DSSERR("timeout waiting for FRAME DONE\n");
1958
1959                 r = omap_dispc_unregister_isr(dispc_disable_isr,
1960                                 &frame_done_completion, irq);
1961
1962                 if (r)
1963                         DSSERR("failed to unregister FRAMEDONE isr\n");
1964         }
1965 }
1966
1967 static void _enable_digit_out(bool enable)
1968 {
1969         REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 1, 1);
1970 }
1971
1972 static void dispc_mgr_enable_digit_out(bool enable)
1973 {
1974         struct completion frame_done_completion;
1975         enum dss_hdmi_venc_clk_source_select src;
1976         int r, i;
1977         u32 irq_mask;
1978         int num_irqs;
1979
1980         if (REG_GET(DISPC_CONTROL, 1, 1) == enable)
1981                 return;
1982
1983         src = dss_get_hdmi_venc_clk_source();
1984
1985         if (enable) {
1986                 unsigned long flags;
1987                 /* When we enable digit output, we'll get an extra digit
1988                  * sync lost interrupt, that we need to ignore */
1989                 spin_lock_irqsave(&dispc.irq_lock, flags);
1990                 dispc.irq_error_mask &= ~DISPC_IRQ_SYNC_LOST_DIGIT;
1991                 _omap_dispc_set_irqs();
1992                 spin_unlock_irqrestore(&dispc.irq_lock, flags);
1993         }
1994
1995         /* When we disable digit output, we need to wait until fields are done.
1996          * Otherwise the DSS is still working, and turning off the clocks
1997          * prevents DSS from going to OFF mode. And when enabling, we need to
1998          * wait for the extra sync losts */
1999         init_completion(&frame_done_completion);
2000
2001         if (src == DSS_HDMI_M_PCLK && enable == false) {
2002                 irq_mask = DISPC_IRQ_FRAMEDONETV;
2003                 num_irqs = 1;
2004         } else {
2005                 irq_mask = DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD;
2006                 /* XXX I understand from TRM that we should only wait for the
2007                  * current field to complete. But it seems we have to wait for
2008                  * both fields */
2009                 num_irqs = 2;
2010         }
2011
2012         r = omap_dispc_register_isr(dispc_disable_isr, &frame_done_completion,
2013                         irq_mask);
2014         if (r)
2015                 DSSERR("failed to register %x isr\n", irq_mask);
2016
2017         _enable_digit_out(enable);
2018
2019         for (i = 0; i < num_irqs; ++i) {
2020                 if (!wait_for_completion_timeout(&frame_done_completion,
2021                                         msecs_to_jiffies(100)))
2022                         DSSERR("timeout waiting for digit out to %s\n",
2023                                         enable ? "start" : "stop");
2024         }
2025
2026         r = omap_dispc_unregister_isr(dispc_disable_isr, &frame_done_completion,
2027                         irq_mask);
2028         if (r)
2029                 DSSERR("failed to unregister %x isr\n", irq_mask);
2030
2031         if (enable) {
2032                 unsigned long flags;
2033                 spin_lock_irqsave(&dispc.irq_lock, flags);
2034                 dispc.irq_error_mask |= DISPC_IRQ_SYNC_LOST_DIGIT;
2035                 dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
2036                 _omap_dispc_set_irqs();
2037                 spin_unlock_irqrestore(&dispc.irq_lock, flags);
2038         }
2039 }
2040
2041 bool dispc_mgr_is_enabled(enum omap_channel channel)
2042 {
2043         if (channel == OMAP_DSS_CHANNEL_LCD)
2044                 return !!REG_GET(DISPC_CONTROL, 0, 0);
2045         else if (channel == OMAP_DSS_CHANNEL_DIGIT)
2046                 return !!REG_GET(DISPC_CONTROL, 1, 1);
2047         else if (channel == OMAP_DSS_CHANNEL_LCD2)
2048                 return !!REG_GET(DISPC_CONTROL2, 0, 0);
2049         else
2050                 BUG();
2051 }
2052
2053 void dispc_mgr_enable(enum omap_channel channel, bool enable)
2054 {
2055         if (dispc_mgr_is_lcd(channel))
2056                 dispc_mgr_enable_lcd_out(channel, enable);
2057         else if (channel == OMAP_DSS_CHANNEL_DIGIT)
2058                 dispc_mgr_enable_digit_out(enable);
2059         else
2060                 BUG();
2061 }
2062
2063 void dispc_lcd_enable_signal_polarity(bool act_high)
2064 {
2065         if (!dss_has_feature(FEAT_LCDENABLEPOL))
2066                 return;
2067
2068         REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
2069 }
2070
2071 void dispc_lcd_enable_signal(bool enable)
2072 {
2073         if (!dss_has_feature(FEAT_LCDENABLESIGNAL))
2074                 return;
2075
2076         REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28);
2077 }
2078
2079 void dispc_pck_free_enable(bool enable)
2080 {
2081         if (!dss_has_feature(FEAT_PCKFREEENABLE))
2082                 return;
2083
2084         REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27);
2085 }
2086
2087 void dispc_mgr_enable_fifohandcheck(enum omap_channel channel, bool enable)
2088 {
2089         if (channel == OMAP_DSS_CHANNEL_LCD2)
2090                 REG_FLD_MOD(DISPC_CONFIG2, enable ? 1 : 0, 16, 16);
2091         else
2092                 REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 16, 16);
2093 }
2094
2095
2096 void dispc_mgr_set_lcd_display_type(enum omap_channel channel,
2097                 enum omap_lcd_display_type type)
2098 {
2099         int mode;
2100
2101         switch (type) {
2102         case OMAP_DSS_LCD_DISPLAY_STN:
2103                 mode = 0;
2104                 break;
2105
2106         case OMAP_DSS_LCD_DISPLAY_TFT:
2107                 mode = 1;
2108                 break;
2109
2110         default:
2111                 BUG();
2112                 return;
2113         }
2114
2115         if (channel == OMAP_DSS_CHANNEL_LCD2)
2116                 REG_FLD_MOD(DISPC_CONTROL2, mode, 3, 3);
2117         else
2118                 REG_FLD_MOD(DISPC_CONTROL, mode, 3, 3);
2119 }
2120
2121 void dispc_set_loadmode(enum omap_dss_load_mode mode)
2122 {
2123         REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1);
2124 }
2125
2126
2127 void dispc_mgr_set_default_color(enum omap_channel channel, u32 color)
2128 {
2129         dispc_write_reg(DISPC_DEFAULT_COLOR(channel), color);
2130 }
2131
2132 u32 dispc_mgr_get_default_color(enum omap_channel channel)
2133 {
2134         u32 l;
2135
2136         BUG_ON(channel != OMAP_DSS_CHANNEL_DIGIT &&
2137                 channel != OMAP_DSS_CHANNEL_LCD &&
2138                 channel != OMAP_DSS_CHANNEL_LCD2);
2139
2140         l = dispc_read_reg(DISPC_DEFAULT_COLOR(channel));
2141
2142         return l;
2143 }
2144
2145 void dispc_mgr_set_trans_key(enum omap_channel ch,
2146                 enum omap_dss_trans_key_type type,
2147                 u32 trans_key)
2148 {
2149         if (ch == OMAP_DSS_CHANNEL_LCD)
2150                 REG_FLD_MOD(DISPC_CONFIG, type, 11, 11);
2151         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2152                 REG_FLD_MOD(DISPC_CONFIG, type, 13, 13);
2153         else /* OMAP_DSS_CHANNEL_LCD2 */
2154                 REG_FLD_MOD(DISPC_CONFIG2, type, 11, 11);
2155
2156         dispc_write_reg(DISPC_TRANS_COLOR(ch), trans_key);
2157 }
2158
2159 void dispc_mgr_get_trans_key(enum omap_channel ch,
2160                 enum omap_dss_trans_key_type *type,
2161                 u32 *trans_key)
2162 {
2163         if (type) {
2164                 if (ch == OMAP_DSS_CHANNEL_LCD)
2165                         *type = REG_GET(DISPC_CONFIG, 11, 11);
2166                 else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2167                         *type = REG_GET(DISPC_CONFIG, 13, 13);
2168                 else if (ch == OMAP_DSS_CHANNEL_LCD2)
2169                         *type = REG_GET(DISPC_CONFIG2, 11, 11);
2170                 else
2171                         BUG();
2172         }
2173
2174         if (trans_key)
2175                 *trans_key = dispc_read_reg(DISPC_TRANS_COLOR(ch));
2176 }
2177
2178 void dispc_mgr_enable_trans_key(enum omap_channel ch, bool enable)
2179 {
2180         if (ch == OMAP_DSS_CHANNEL_LCD)
2181                 REG_FLD_MOD(DISPC_CONFIG, enable, 10, 10);
2182         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2183                 REG_FLD_MOD(DISPC_CONFIG, enable, 12, 12);
2184         else /* OMAP_DSS_CHANNEL_LCD2 */
2185                 REG_FLD_MOD(DISPC_CONFIG2, enable, 10, 10);
2186 }
2187
2188 void dispc_mgr_enable_alpha_fixed_zorder(enum omap_channel ch, bool enable)
2189 {
2190         if (!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
2191                 return;
2192
2193         if (ch == OMAP_DSS_CHANNEL_LCD)
2194                 REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18);
2195         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2196                 REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19);
2197 }
2198
2199 bool dispc_mgr_alpha_fixed_zorder_enabled(enum omap_channel ch)
2200 {
2201         bool enabled;
2202
2203         if (!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
2204                 return false;
2205
2206         if (ch == OMAP_DSS_CHANNEL_LCD)
2207                 enabled = REG_GET(DISPC_CONFIG, 18, 18);
2208         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2209                 enabled = REG_GET(DISPC_CONFIG, 19, 19);
2210         else
2211                 BUG();
2212
2213         return enabled;
2214 }
2215
2216 bool dispc_mgr_trans_key_enabled(enum omap_channel ch)
2217 {
2218         bool enabled;
2219
2220         if (ch == OMAP_DSS_CHANNEL_LCD)
2221                 enabled = REG_GET(DISPC_CONFIG, 10, 10);
2222         else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2223                 enabled = REG_GET(DISPC_CONFIG, 12, 12);
2224         else if (ch == OMAP_DSS_CHANNEL_LCD2)
2225                 enabled = REG_GET(DISPC_CONFIG2, 10, 10);
2226         else
2227                 BUG();
2228
2229         return enabled;
2230 }
2231
2232
2233 void dispc_mgr_set_tft_data_lines(enum omap_channel channel, u8 data_lines)
2234 {
2235         int code;
2236
2237         switch (data_lines) {
2238         case 12:
2239                 code = 0;
2240                 break;
2241         case 16:
2242                 code = 1;
2243                 break;
2244         case 18:
2245                 code = 2;
2246                 break;
2247         case 24:
2248                 code = 3;
2249                 break;
2250         default:
2251                 BUG();
2252                 return;
2253         }
2254
2255         if (channel == OMAP_DSS_CHANNEL_LCD2)
2256                 REG_FLD_MOD(DISPC_CONTROL2, code, 9, 8);
2257         else
2258                 REG_FLD_MOD(DISPC_CONTROL, code, 9, 8);
2259 }
2260
2261 void dispc_mgr_set_io_pad_mode(enum dss_io_pad_mode mode)
2262 {
2263         u32 l;
2264         int gpout0, gpout1;
2265
2266         switch (mode) {
2267         case DSS_IO_PAD_MODE_RESET:
2268                 gpout0 = 0;
2269                 gpout1 = 0;
2270                 break;
2271         case DSS_IO_PAD_MODE_RFBI:
2272                 gpout0 = 1;
2273                 gpout1 = 0;
2274                 break;
2275         case DSS_IO_PAD_MODE_BYPASS:
2276                 gpout0 = 1;
2277                 gpout1 = 1;
2278                 break;
2279         default:
2280                 BUG();
2281                 return;
2282         }
2283
2284         l = dispc_read_reg(DISPC_CONTROL);
2285         l = FLD_MOD(l, gpout0, 15, 15);
2286         l = FLD_MOD(l, gpout1, 16, 16);
2287         dispc_write_reg(DISPC_CONTROL, l);
2288 }
2289
2290 void dispc_mgr_enable_stallmode(enum omap_channel channel, bool enable)
2291 {
2292         if (channel == OMAP_DSS_CHANNEL_LCD2)
2293                 REG_FLD_MOD(DISPC_CONTROL2, enable, 11, 11);
2294         else
2295                 REG_FLD_MOD(DISPC_CONTROL, enable, 11, 11);
2296 }
2297
2298 static bool _dispc_lcd_timings_ok(int hsw, int hfp, int hbp,
2299                 int vsw, int vfp, int vbp)
2300 {
2301         if (cpu_is_omap24xx() || omap_rev() < OMAP3430_REV_ES3_0) {
2302                 if (hsw < 1 || hsw > 64 ||
2303                                 hfp < 1 || hfp > 256 ||
2304                                 hbp < 1 || hbp > 256 ||
2305                                 vsw < 1 || vsw > 64 ||
2306                                 vfp < 0 || vfp > 255 ||
2307                                 vbp < 0 || vbp > 255)
2308                         return false;
2309         } else {
2310                 if (hsw < 1 || hsw > 256 ||
2311                                 hfp < 1 || hfp > 4096 ||
2312                                 hbp < 1 || hbp > 4096 ||
2313                                 vsw < 1 || vsw > 256 ||
2314                                 vfp < 0 || vfp > 4095 ||
2315                                 vbp < 0 || vbp > 4095)
2316                         return false;
2317         }
2318
2319         return true;
2320 }
2321
2322 bool dispc_lcd_timings_ok(struct omap_video_timings *timings)
2323 {
2324         return _dispc_lcd_timings_ok(timings->hsw, timings->hfp,
2325                         timings->hbp, timings->vsw,
2326                         timings->vfp, timings->vbp);
2327 }
2328
2329 static void _dispc_mgr_set_lcd_timings(enum omap_channel channel, int hsw,
2330                 int hfp, int hbp, int vsw, int vfp, int vbp)
2331 {
2332         u32 timing_h, timing_v;
2333
2334         if (cpu_is_omap24xx() || omap_rev() < OMAP3430_REV_ES3_0) {
2335                 timing_h = FLD_VAL(hsw-1, 5, 0) | FLD_VAL(hfp-1, 15, 8) |
2336                         FLD_VAL(hbp-1, 27, 20);
2337
2338                 timing_v = FLD_VAL(vsw-1, 5, 0) | FLD_VAL(vfp, 15, 8) |
2339                         FLD_VAL(vbp, 27, 20);
2340         } else {
2341                 timing_h = FLD_VAL(hsw-1, 7, 0) | FLD_VAL(hfp-1, 19, 8) |
2342                         FLD_VAL(hbp-1, 31, 20);
2343
2344                 timing_v = FLD_VAL(vsw-1, 7, 0) | FLD_VAL(vfp, 19, 8) |
2345                         FLD_VAL(vbp, 31, 20);
2346         }
2347
2348         dispc_write_reg(DISPC_TIMING_H(channel), timing_h);
2349         dispc_write_reg(DISPC_TIMING_V(channel), timing_v);
2350 }
2351
2352 /* change name to mode? */
2353 void dispc_mgr_set_lcd_timings(enum omap_channel channel,
2354                 struct omap_video_timings *timings)
2355 {
2356         unsigned xtot, ytot;
2357         unsigned long ht, vt;
2358
2359         if (!_dispc_lcd_timings_ok(timings->hsw, timings->hfp,
2360                                 timings->hbp, timings->vsw,
2361                                 timings->vfp, timings->vbp))
2362                 BUG();
2363
2364         _dispc_mgr_set_lcd_timings(channel, timings->hsw, timings->hfp,
2365                         timings->hbp, timings->vsw, timings->vfp,
2366                         timings->vbp);
2367
2368         dispc_mgr_set_lcd_size(channel, timings->x_res, timings->y_res);
2369
2370         xtot = timings->x_res + timings->hfp + timings->hsw + timings->hbp;
2371         ytot = timings->y_res + timings->vfp + timings->vsw + timings->vbp;
2372
2373         ht = (timings->pixel_clock * 1000) / xtot;
2374         vt = (timings->pixel_clock * 1000) / xtot / ytot;
2375
2376         DSSDBG("channel %d xres %u yres %u\n", channel, timings->x_res,
2377                         timings->y_res);
2378         DSSDBG("pck %u\n", timings->pixel_clock);
2379         DSSDBG("hsw %d hfp %d hbp %d vsw %d vfp %d vbp %d\n",
2380                         timings->hsw, timings->hfp, timings->hbp,
2381                         timings->vsw, timings->vfp, timings->vbp);
2382
2383         DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt);
2384 }
2385
2386 static void dispc_mgr_set_lcd_divisor(enum omap_channel channel, u16 lck_div,
2387                 u16 pck_div)
2388 {
2389         BUG_ON(lck_div < 1);
2390         BUG_ON(pck_div < 1);
2391
2392         dispc_write_reg(DISPC_DIVISORo(channel),
2393                         FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
2394 }
2395
2396 static void dispc_mgr_get_lcd_divisor(enum omap_channel channel, int *lck_div,
2397                 int *pck_div)
2398 {
2399         u32 l;
2400         l = dispc_read_reg(DISPC_DIVISORo(channel));
2401         *lck_div = FLD_GET(l, 23, 16);
2402         *pck_div = FLD_GET(l, 7, 0);
2403 }
2404
2405 unsigned long dispc_fclk_rate(void)
2406 {
2407         struct platform_device *dsidev;
2408         unsigned long r = 0;
2409
2410         switch (dss_get_dispc_clk_source()) {
2411         case OMAP_DSS_CLK_SRC_FCK:
2412                 r = clk_get_rate(dispc.dss_clk);
2413                 break;
2414         case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
2415                 dsidev = dsi_get_dsidev_from_id(0);
2416                 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
2417                 break;
2418         case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
2419                 dsidev = dsi_get_dsidev_from_id(1);
2420                 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
2421                 break;
2422         default:
2423                 BUG();
2424         }
2425
2426         return r;
2427 }
2428
2429 unsigned long dispc_mgr_lclk_rate(enum omap_channel channel)
2430 {
2431         struct platform_device *dsidev;
2432         int lcd;
2433         unsigned long r;
2434         u32 l;
2435
2436         l = dispc_read_reg(DISPC_DIVISORo(channel));
2437
2438         lcd = FLD_GET(l, 23, 16);
2439
2440         switch (dss_get_lcd_clk_source(channel)) {
2441         case OMAP_DSS_CLK_SRC_FCK:
2442                 r = clk_get_rate(dispc.dss_clk);
2443                 break;
2444         case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
2445                 dsidev = dsi_get_dsidev_from_id(0);
2446                 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
2447                 break;
2448         case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
2449                 dsidev = dsi_get_dsidev_from_id(1);
2450                 r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
2451                 break;
2452         default:
2453                 BUG();
2454         }
2455
2456         return r / lcd;
2457 }
2458
2459 unsigned long dispc_mgr_pclk_rate(enum omap_channel channel)
2460 {
2461         unsigned long r;
2462
2463         if (dispc_mgr_is_lcd(channel)) {
2464                 int pcd;
2465                 u32 l;
2466
2467                 l = dispc_read_reg(DISPC_DIVISORo(channel));
2468
2469                 pcd = FLD_GET(l, 7, 0);
2470
2471                 r = dispc_mgr_lclk_rate(channel);
2472
2473                 return r / pcd;
2474         } else {
2475                 struct omap_dss_device *dssdev =
2476                         dispc_mgr_get_device(channel);
2477
2478                 switch (dssdev->type) {
2479                 case OMAP_DISPLAY_TYPE_VENC:
2480                         return venc_get_pixel_clock();
2481                 case OMAP_DISPLAY_TYPE_HDMI:
2482                         return hdmi_get_pixel_clock();
2483                 default:
2484                         BUG();
2485                 }
2486         }
2487 }
2488
2489 void dispc_dump_clocks(struct seq_file *s)
2490 {
2491         int lcd, pcd;
2492         u32 l;
2493         enum omap_dss_clk_source dispc_clk_src = dss_get_dispc_clk_source();
2494         enum omap_dss_clk_source lcd_clk_src;
2495
2496         if (dispc_runtime_get())
2497                 return;
2498
2499         seq_printf(s, "- DISPC -\n");
2500
2501         seq_printf(s, "dispc fclk source = %s (%s)\n",
2502                         dss_get_generic_clk_source_name(dispc_clk_src),
2503                         dss_feat_get_clk_source_name(dispc_clk_src));
2504
2505         seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate());
2506
2507         if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
2508                 seq_printf(s, "- DISPC-CORE-CLK -\n");
2509                 l = dispc_read_reg(DISPC_DIVISOR);
2510                 lcd = FLD_GET(l, 23, 16);
2511
2512                 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
2513                                 (dispc_fclk_rate()/lcd), lcd);
2514         }
2515         seq_printf(s, "- LCD1 -\n");
2516
2517         lcd_clk_src = dss_get_lcd_clk_source(OMAP_DSS_CHANNEL_LCD);
2518
2519         seq_printf(s, "lcd1_clk source = %s (%s)\n",
2520                 dss_get_generic_clk_source_name(lcd_clk_src),
2521                 dss_feat_get_clk_source_name(lcd_clk_src));
2522
2523         dispc_mgr_get_lcd_divisor(OMAP_DSS_CHANNEL_LCD, &lcd, &pcd);
2524
2525         seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
2526                         dispc_mgr_lclk_rate(OMAP_DSS_CHANNEL_LCD), lcd);
2527         seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
2528                         dispc_mgr_pclk_rate(OMAP_DSS_CHANNEL_LCD), pcd);
2529         if (dss_has_feature(FEAT_MGR_LCD2)) {
2530                 seq_printf(s, "- LCD2 -\n");
2531
2532                 lcd_clk_src = dss_get_lcd_clk_source(OMAP_DSS_CHANNEL_LCD2);
2533
2534                 seq_printf(s, "lcd2_clk source = %s (%s)\n",
2535                         dss_get_generic_clk_source_name(lcd_clk_src),
2536                         dss_feat_get_clk_source_name(lcd_clk_src));
2537
2538                 dispc_mgr_get_lcd_divisor(OMAP_DSS_CHANNEL_LCD2, &lcd, &pcd);
2539
2540                 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
2541                                 dispc_mgr_lclk_rate(OMAP_DSS_CHANNEL_LCD2), lcd);
2542                 seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
2543                                 dispc_mgr_pclk_rate(OMAP_DSS_CHANNEL_LCD2), pcd);
2544         }
2545
2546         dispc_runtime_put();
2547 }
2548
2549 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
2550 void dispc_dump_irqs(struct seq_file *s)
2551 {
2552         unsigned long flags;
2553         struct dispc_irq_stats stats;
2554
2555         spin_lock_irqsave(&dispc.irq_stats_lock, flags);
2556
2557         stats = dispc.irq_stats;
2558         memset(&dispc.irq_stats, 0, sizeof(dispc.irq_stats));
2559         dispc.irq_stats.last_reset = jiffies;
2560
2561         spin_unlock_irqrestore(&dispc.irq_stats_lock, flags);
2562
2563         seq_printf(s, "period %u ms\n",
2564                         jiffies_to_msecs(jiffies - stats.last_reset));
2565
2566         seq_printf(s, "irqs %d\n", stats.irq_count);
2567 #define PIS(x) \
2568         seq_printf(s, "%-20s %10d\n", #x, stats.irqs[ffs(DISPC_IRQ_##x)-1]);
2569
2570         PIS(FRAMEDONE);
2571         PIS(VSYNC);
2572         PIS(EVSYNC_EVEN);
2573         PIS(EVSYNC_ODD);
2574         PIS(ACBIAS_COUNT_STAT);
2575         PIS(PROG_LINE_NUM);
2576         PIS(GFX_FIFO_UNDERFLOW);
2577         PIS(GFX_END_WIN);
2578         PIS(PAL_GAMMA_MASK);
2579         PIS(OCP_ERR);
2580         PIS(VID1_FIFO_UNDERFLOW);
2581         PIS(VID1_END_WIN);
2582         PIS(VID2_FIFO_UNDERFLOW);
2583         PIS(VID2_END_WIN);
2584         if (dss_feat_get_num_ovls() > 3) {
2585                 PIS(VID3_FIFO_UNDERFLOW);
2586                 PIS(VID3_END_WIN);
2587         }
2588         PIS(SYNC_LOST);
2589         PIS(SYNC_LOST_DIGIT);
2590         PIS(WAKEUP);
2591         if (dss_has_feature(FEAT_MGR_LCD2)) {
2592                 PIS(FRAMEDONE2);
2593                 PIS(VSYNC2);
2594                 PIS(ACBIAS_COUNT_STAT2);
2595                 PIS(SYNC_LOST2);
2596         }
2597 #undef PIS
2598 }
2599 #endif
2600
2601 void dispc_dump_regs(struct seq_file *s)
2602 {
2603         int i, j;
2604         const char *mgr_names[] = {
2605                 [OMAP_DSS_CHANNEL_LCD]          = "LCD",
2606                 [OMAP_DSS_CHANNEL_DIGIT]        = "TV",
2607                 [OMAP_DSS_CHANNEL_LCD2]         = "LCD2",
2608         };
2609         const char *ovl_names[] = {
2610                 [OMAP_DSS_GFX]          = "GFX",
2611                 [OMAP_DSS_VIDEO1]       = "VID1",
2612                 [OMAP_DSS_VIDEO2]       = "VID2",
2613                 [OMAP_DSS_VIDEO3]       = "VID3",
2614         };
2615         const char **p_names;
2616
2617 #define DUMPREG(r) seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(r))
2618
2619         if (dispc_runtime_get())
2620                 return;
2621
2622         /* DISPC common registers */
2623         DUMPREG(DISPC_REVISION);
2624         DUMPREG(DISPC_SYSCONFIG);
2625         DUMPREG(DISPC_SYSSTATUS);
2626         DUMPREG(DISPC_IRQSTATUS);
2627         DUMPREG(DISPC_IRQENABLE);
2628         DUMPREG(DISPC_CONTROL);
2629         DUMPREG(DISPC_CONFIG);
2630         DUMPREG(DISPC_CAPABLE);
2631         DUMPREG(DISPC_LINE_STATUS);
2632         DUMPREG(DISPC_LINE_NUMBER);
2633         if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
2634                         dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
2635                 DUMPREG(DISPC_GLOBAL_ALPHA);
2636         if (dss_has_feature(FEAT_MGR_LCD2)) {
2637                 DUMPREG(DISPC_CONTROL2);
2638                 DUMPREG(DISPC_CONFIG2);
2639         }
2640
2641 #undef DUMPREG
2642
2643 #define DISPC_REG(i, name) name(i)
2644 #define DUMPREG(i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, p_names[i], \
2645         48 - strlen(#r) - strlen(p_names[i]), " ", \
2646         dispc_read_reg(DISPC_REG(i, r)))
2647
2648         p_names = mgr_names;
2649
2650         /* DISPC channel specific registers */
2651         for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
2652                 DUMPREG(i, DISPC_DEFAULT_COLOR);
2653                 DUMPREG(i, DISPC_TRANS_COLOR);
2654                 DUMPREG(i, DISPC_SIZE_MGR);
2655
2656                 if (i == OMAP_DSS_CHANNEL_DIGIT)
2657                         continue;
2658
2659                 DUMPREG(i, DISPC_DEFAULT_COLOR);
2660                 DUMPREG(i, DISPC_TRANS_COLOR);
2661                 DUMPREG(i, DISPC_TIMING_H);
2662                 DUMPREG(i, DISPC_TIMING_V);
2663                 DUMPREG(i, DISPC_POL_FREQ);
2664                 DUMPREG(i, DISPC_DIVISORo);
2665                 DUMPREG(i, DISPC_SIZE_MGR);
2666
2667                 DUMPREG(i, DISPC_DATA_CYCLE1);
2668                 DUMPREG(i, DISPC_DATA_CYCLE2);
2669                 DUMPREG(i, DISPC_DATA_CYCLE3);
2670
2671                 if (dss_has_feature(FEAT_CPR)) {
2672                         DUMPREG(i, DISPC_CPR_COEF_R);
2673                         DUMPREG(i, DISPC_CPR_COEF_G);
2674                         DUMPREG(i, DISPC_CPR_COEF_B);
2675                 }
2676         }
2677
2678         p_names = ovl_names;
2679
2680         for (i = 0; i < dss_feat_get_num_ovls(); i++) {
2681                 DUMPREG(i, DISPC_OVL_BA0);
2682                 DUMPREG(i, DISPC_OVL_BA1);
2683                 DUMPREG(i, DISPC_OVL_POSITION);
2684                 DUMPREG(i, DISPC_OVL_SIZE);
2685                 DUMPREG(i, DISPC_OVL_ATTRIBUTES);
2686                 DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD);
2687                 DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS);
2688                 DUMPREG(i, DISPC_OVL_ROW_INC);
2689                 DUMPREG(i, DISPC_OVL_PIXEL_INC);
2690                 if (dss_has_feature(FEAT_PRELOAD))
2691                         DUMPREG(i, DISPC_OVL_PRELOAD);
2692
2693                 if (i == OMAP_DSS_GFX) {
2694                         DUMPREG(i, DISPC_OVL_WINDOW_SKIP);
2695                         DUMPREG(i, DISPC_OVL_TABLE_BA);
2696                         continue;
2697                 }
2698
2699                 DUMPREG(i, DISPC_OVL_FIR);
2700                 DUMPREG(i, DISPC_OVL_PICTURE_SIZE);
2701                 DUMPREG(i, DISPC_OVL_ACCU0);
2702                 DUMPREG(i, DISPC_OVL_ACCU1);
2703                 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
2704                         DUMPREG(i, DISPC_OVL_BA0_UV);
2705                         DUMPREG(i, DISPC_OVL_BA1_UV);
2706                         DUMPREG(i, DISPC_OVL_FIR2);
2707                         DUMPREG(i, DISPC_OVL_ACCU2_0);
2708                         DUMPREG(i, DISPC_OVL_ACCU2_1);
2709                 }
2710                 if (dss_has_feature(FEAT_ATTR2))
2711                         DUMPREG(i, DISPC_OVL_ATTRIBUTES2);
2712                 if (dss_has_feature(FEAT_PRELOAD))
2713                         DUMPREG(i, DISPC_OVL_PRELOAD);
2714         }
2715
2716 #undef DISPC_REG
2717 #undef DUMPREG
2718
2719 #define DISPC_REG(plane, name, i) name(plane, i)
2720 #define DUMPREG(plane, name, i) \
2721         seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, p_names[plane], \
2722         46 - strlen(#name) - strlen(p_names[plane]), " ", \
2723         dispc_read_reg(DISPC_REG(plane, name, i)))
2724
2725         /* Video pipeline coefficient registers */
2726
2727         /* start from OMAP_DSS_VIDEO1 */
2728         for (i = 1; i < dss_feat_get_num_ovls(); i++) {
2729                 for (j = 0; j < 8; j++)
2730                         DUMPREG(i, DISPC_OVL_FIR_COEF_H, j);
2731
2732                 for (j = 0; j < 8; j++)
2733                         DUMPREG(i, DISPC_OVL_FIR_COEF_HV, j);
2734
2735                 for (j = 0; j < 5; j++)
2736                         DUMPREG(i, DISPC_OVL_CONV_COEF, j);
2737
2738                 if (dss_has_feature(FEAT_FIR_COEF_V)) {
2739                         for (j = 0; j < 8; j++)
2740                                 DUMPREG(i, DISPC_OVL_FIR_COEF_V, j);
2741                 }
2742
2743                 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
2744                         for (j = 0; j < 8; j++)
2745                                 DUMPREG(i, DISPC_OVL_FIR_COEF_H2, j);
2746
2747                         for (j = 0; j < 8; j++)
2748                                 DUMPREG(i, DISPC_OVL_FIR_COEF_HV2, j);
2749
2750                         for (j = 0; j < 8; j++)
2751                                 DUMPREG(i, DISPC_OVL_FIR_COEF_V2, j);
2752                 }
2753         }
2754
2755         dispc_runtime_put();
2756
2757 #undef DISPC_REG
2758 #undef DUMPREG
2759 }
2760
2761 static void _dispc_mgr_set_pol_freq(enum omap_channel channel, bool onoff,
2762                 bool rf, bool ieo, bool ipc, bool ihs, bool ivs, u8 acbi,
2763                 u8 acb)
2764 {
2765         u32 l = 0;
2766
2767         DSSDBG("onoff %d rf %d ieo %d ipc %d ihs %d ivs %d acbi %d acb %d\n",
2768                         onoff, rf, ieo, ipc, ihs, ivs, acbi, acb);
2769
2770         l |= FLD_VAL(onoff, 17, 17);
2771         l |= FLD_VAL(rf, 16, 16);
2772         l |= FLD_VAL(ieo, 15, 15);
2773         l |= FLD_VAL(ipc, 14, 14);
2774         l |= FLD_VAL(ihs, 13, 13);
2775         l |= FLD_VAL(ivs, 12, 12);
2776         l |= FLD_VAL(acbi, 11, 8);
2777         l |= FLD_VAL(acb, 7, 0);
2778
2779         dispc_write_reg(DISPC_POL_FREQ(channel), l);
2780 }
2781
2782 void dispc_mgr_set_pol_freq(enum omap_channel channel,
2783                 enum omap_panel_config config, u8 acbi, u8 acb)
2784 {
2785         _dispc_mgr_set_pol_freq(channel, (config & OMAP_DSS_LCD_ONOFF) != 0,
2786                         (config & OMAP_DSS_LCD_RF) != 0,
2787                         (config & OMAP_DSS_LCD_IEO) != 0,
2788                         (config & OMAP_DSS_LCD_IPC) != 0,
2789                         (config & OMAP_DSS_LCD_IHS) != 0,
2790                         (config & OMAP_DSS_LCD_IVS) != 0,
2791                         acbi, acb);
2792 }
2793
2794 /* with fck as input clock rate, find dispc dividers that produce req_pck */
2795 void dispc_find_clk_divs(bool is_tft, unsigned long req_pck, unsigned long fck,
2796                 struct dispc_clock_info *cinfo)
2797 {
2798         u16 pcd_min, pcd_max;
2799         unsigned long best_pck;
2800         u16 best_ld, cur_ld;
2801         u16 best_pd, cur_pd;
2802
2803         pcd_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD);
2804         pcd_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD);
2805
2806         if (!is_tft)
2807                 pcd_min = 3;
2808
2809         best_pck = 0;
2810         best_ld = 0;
2811         best_pd = 0;
2812
2813         for (cur_ld = 1; cur_ld <= 255; ++cur_ld) {
2814                 unsigned long lck = fck / cur_ld;
2815
2816                 for (cur_pd = pcd_min; cur_pd <= pcd_max; ++cur_pd) {
2817                         unsigned long pck = lck / cur_pd;
2818                         long old_delta = abs(best_pck - req_pck);
2819                         long new_delta = abs(pck - req_pck);
2820
2821                         if (best_pck == 0 || new_delta < old_delta) {
2822                                 best_pck = pck;
2823                                 best_ld = cur_ld;
2824                                 best_pd = cur_pd;
2825
2826                                 if (pck == req_pck)
2827                                         goto found;
2828                         }
2829
2830                         if (pck < req_pck)
2831                                 break;
2832                 }
2833
2834                 if (lck / pcd_min < req_pck)
2835                         break;
2836         }
2837
2838 found:
2839         cinfo->lck_div = best_ld;
2840         cinfo->pck_div = best_pd;
2841         cinfo->lck = fck / cinfo->lck_div;
2842         cinfo->pck = cinfo->lck / cinfo->pck_div;
2843 }
2844
2845 /* calculate clock rates using dividers in cinfo */
2846 int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
2847                 struct dispc_clock_info *cinfo)
2848 {
2849         if (cinfo->lck_div > 255 || cinfo->lck_div == 0)
2850                 return -EINVAL;
2851         if (cinfo->pck_div < 1 || cinfo->pck_div > 255)
2852                 return -EINVAL;
2853
2854         cinfo->lck = dispc_fclk_rate / cinfo->lck_div;
2855         cinfo->pck = cinfo->lck / cinfo->pck_div;
2856
2857         return 0;
2858 }
2859
2860 int dispc_mgr_set_clock_div(enum omap_channel channel,
2861                 struct dispc_clock_info *cinfo)
2862 {
2863         DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div);
2864         DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div);
2865
2866         dispc_mgr_set_lcd_divisor(channel, cinfo->lck_div, cinfo->pck_div);
2867
2868         return 0;
2869 }
2870
2871 int dispc_mgr_get_clock_div(enum omap_channel channel,
2872                 struct dispc_clock_info *cinfo)
2873 {
2874         unsigned long fck;
2875
2876         fck = dispc_fclk_rate();
2877
2878         cinfo->lck_div = REG_GET(DISPC_DIVISORo(channel), 23, 16);
2879         cinfo->pck_div = REG_GET(DISPC_DIVISORo(channel), 7, 0);
2880
2881         cinfo->lck = fck / cinfo->lck_div;
2882         cinfo->pck = cinfo->lck / cinfo->pck_div;
2883
2884         return 0;
2885 }
2886
2887 /* dispc.irq_lock has to be locked by the caller */
2888 static void _omap_dispc_set_irqs(void)
2889 {
2890         u32 mask;
2891         u32 old_mask;
2892         int i;
2893         struct omap_dispc_isr_data *isr_data;
2894
2895         mask = dispc.irq_error_mask;
2896
2897         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
2898                 isr_data = &dispc.registered_isr[i];
2899
2900                 if (isr_data->isr == NULL)
2901                         continue;
2902
2903                 mask |= isr_data->mask;
2904         }
2905
2906         old_mask = dispc_read_reg(DISPC_IRQENABLE);
2907         /* clear the irqstatus for newly enabled irqs */
2908         dispc_write_reg(DISPC_IRQSTATUS, (mask ^ old_mask) & mask);
2909
2910         dispc_write_reg(DISPC_IRQENABLE, mask);
2911 }
2912
2913 int omap_dispc_register_isr(omap_dispc_isr_t isr, void *arg, u32 mask)
2914 {
2915         int i;
2916         int ret;
2917         unsigned long flags;
2918         struct omap_dispc_isr_data *isr_data;
2919
2920         if (isr == NULL)
2921                 return -EINVAL;
2922
2923         spin_lock_irqsave(&dispc.irq_lock, flags);
2924
2925         /* check for duplicate entry */
2926         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
2927                 isr_data = &dispc.registered_isr[i];
2928                 if (isr_data->isr == isr && isr_data->arg == arg &&
2929                                 isr_data->mask == mask) {
2930                         ret = -EINVAL;
2931                         goto err;
2932                 }
2933         }
2934
2935         isr_data = NULL;
2936         ret = -EBUSY;
2937
2938         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
2939                 isr_data = &dispc.registered_isr[i];
2940
2941                 if (isr_data->isr != NULL)
2942                         continue;
2943
2944                 isr_data->isr = isr;
2945                 isr_data->arg = arg;
2946                 isr_data->mask = mask;
2947                 ret = 0;
2948
2949                 break;
2950         }
2951
2952         if (ret)
2953                 goto err;
2954
2955         _omap_dispc_set_irqs();
2956
2957         spin_unlock_irqrestore(&dispc.irq_lock, flags);
2958
2959         return 0;
2960 err:
2961         spin_unlock_irqrestore(&dispc.irq_lock, flags);
2962
2963         return ret;
2964 }
2965 EXPORT_SYMBOL(omap_dispc_register_isr);
2966
2967 int omap_dispc_unregister_isr(omap_dispc_isr_t isr, void *arg, u32 mask)
2968 {
2969         int i;
2970         unsigned long flags;
2971         int ret = -EINVAL;
2972         struct omap_dispc_isr_data *isr_data;
2973
2974         spin_lock_irqsave(&dispc.irq_lock, flags);
2975
2976         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
2977                 isr_data = &dispc.registered_isr[i];
2978                 if (isr_data->isr != isr || isr_data->arg != arg ||
2979                                 isr_data->mask != mask)
2980                         continue;
2981
2982                 /* found the correct isr */
2983
2984                 isr_data->isr = NULL;
2985                 isr_data->arg = NULL;
2986                 isr_data->mask = 0;
2987
2988                 ret = 0;
2989                 break;
2990         }
2991
2992         if (ret == 0)
2993                 _omap_dispc_set_irqs();
2994
2995         spin_unlock_irqrestore(&dispc.irq_lock, flags);
2996
2997         return ret;
2998 }
2999 EXPORT_SYMBOL(omap_dispc_unregister_isr);
3000
3001 #ifdef DEBUG
3002 static void print_irq_status(u32 status)
3003 {
3004         if ((status & dispc.irq_error_mask) == 0)
3005                 return;
3006
3007         printk(KERN_DEBUG "DISPC IRQ: 0x%x: ", status);
3008
3009 #define PIS(x) \
3010         if (status & DISPC_IRQ_##x) \
3011                 printk(#x " ");
3012         PIS(GFX_FIFO_UNDERFLOW);
3013         PIS(OCP_ERR);
3014         PIS(VID1_FIFO_UNDERFLOW);
3015         PIS(VID2_FIFO_UNDERFLOW);
3016         if (dss_feat_get_num_ovls() > 3)
3017                 PIS(VID3_FIFO_UNDERFLOW);
3018         PIS(SYNC_LOST);
3019         PIS(SYNC_LOST_DIGIT);
3020         if (dss_has_feature(FEAT_MGR_LCD2))
3021                 PIS(SYNC_LOST2);
3022 #undef PIS
3023
3024         printk("\n");
3025 }
3026 #endif
3027
3028 /* Called from dss.c. Note that we don't touch clocks here,
3029  * but we presume they are on because we got an IRQ. However,
3030  * an irq handler may turn the clocks off, so we may not have
3031  * clock later in the function. */
3032 static irqreturn_t omap_dispc_irq_handler(int irq, void *arg)
3033 {
3034         int i;
3035         u32 irqstatus, irqenable;
3036         u32 handledirqs = 0;
3037         u32 unhandled_errors;
3038         struct omap_dispc_isr_data *isr_data;
3039         struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS];
3040
3041         spin_lock(&dispc.irq_lock);
3042
3043         irqstatus = dispc_read_reg(DISPC_IRQSTATUS);
3044         irqenable = dispc_read_reg(DISPC_IRQENABLE);
3045
3046         /* IRQ is not for us */
3047         if (!(irqstatus & irqenable)) {
3048                 spin_unlock(&dispc.irq_lock);
3049                 return IRQ_NONE;
3050         }
3051
3052 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
3053         spin_lock(&dispc.irq_stats_lock);
3054         dispc.irq_stats.irq_count++;
3055         dss_collect_irq_stats(irqstatus, dispc.irq_stats.irqs);
3056         spin_unlock(&dispc.irq_stats_lock);
3057 #endif
3058
3059 #ifdef DEBUG
3060         if (dss_debug)
3061                 print_irq_status(irqstatus);
3062 #endif
3063         /* Ack the interrupt. Do it here before clocks are possibly turned
3064          * off */
3065         dispc_write_reg(DISPC_IRQSTATUS, irqstatus);
3066         /* flush posted write */
3067         dispc_read_reg(DISPC_IRQSTATUS);
3068
3069         /* make a copy and unlock, so that isrs can unregister
3070          * themselves */
3071         memcpy(registered_isr, dispc.registered_isr,
3072                         sizeof(registered_isr));
3073
3074         spin_unlock(&dispc.irq_lock);
3075
3076         for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
3077                 isr_data = &registered_isr[i];
3078
3079                 if (!isr_data->isr)
3080                         continue;
3081
3082                 if (isr_data->mask & irqstatus) {
3083                         isr_data->isr(isr_data->arg, irqstatus);
3084                         handledirqs |= isr_data->mask;
3085                 }
3086         }
3087
3088         spin_lock(&dispc.irq_lock);
3089
3090         unhandled_errors = irqstatus & ~handledirqs & dispc.irq_error_mask;
3091
3092         if (unhandled_errors) {
3093                 dispc.error_irqs |= unhandled_errors;
3094
3095                 dispc.irq_error_mask &= ~unhandled_errors;
3096                 _omap_dispc_set_irqs();
3097
3098                 schedule_work(&dispc.error_work);
3099         }
3100
3101         spin_unlock(&dispc.irq_lock);
3102
3103         return IRQ_HANDLED;
3104 }
3105
3106 static void dispc_error_worker(struct work_struct *work)
3107 {
3108         int i;
3109         u32 errors;
3110         unsigned long flags;
3111         static const unsigned fifo_underflow_bits[] = {
3112                 DISPC_IRQ_GFX_FIFO_UNDERFLOW,
3113                 DISPC_IRQ_VID1_FIFO_UNDERFLOW,
3114                 DISPC_IRQ_VID2_FIFO_UNDERFLOW,
3115                 DISPC_IRQ_VID3_FIFO_UNDERFLOW,
3116         };
3117
3118         static const unsigned sync_lost_bits[] = {