2 * Copyright (C) 2011 Samsung Electronics Co.Ltd
4 * Seung-Woo Kim <sw0312.kim@samsung.com>
5 * Inki Dae <inki.dae@samsung.com>
6 * Joonyoung Shim <jy0922.shim@samsung.com>
8 * Based on drivers/media/video/s5p-tv/mixer_reg.c
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
19 #include "regs-mixer.h"
22 #include <linux/kernel.h>
23 #include <linux/spinlock.h>
24 #include <linux/wait.h>
25 #include <linux/i2c.h>
26 #include <linux/module.h>
27 #include <linux/platform_device.h>
28 #include <linux/interrupt.h>
29 #include <linux/irq.h>
30 #include <linux/delay.h>
31 #include <linux/pm_runtime.h>
32 #include <linux/clk.h>
33 #include <linux/regulator/consumer.h>
35 #include <drm/exynos_drm.h>
37 #include "exynos_drm_drv.h"
38 #include "exynos_drm_crtc.h"
39 #include "exynos_drm_hdmi.h"
40 #include "exynos_drm_iommu.h"
42 #define get_mixer_context(dev) platform_get_drvdata(to_platform_device(dev))
44 struct hdmi_win_data {
46 dma_addr_t chroma_dma_addr;
47 uint32_t pixel_format;
51 unsigned int crtc_width;
52 unsigned int crtc_height;
55 unsigned int fb_width;
56 unsigned int fb_height;
57 unsigned int src_width;
58 unsigned int src_height;
59 unsigned int mode_width;
60 unsigned int mode_height;
61 unsigned int scan_flags;
66 struct mixer_resources {
68 void __iomem *mixer_regs;
69 void __iomem *vp_regs;
73 struct clk *sclk_mixer;
74 struct clk *sclk_hdmi;
78 enum mixer_version_id {
83 struct mixer_context {
85 struct drm_device *drm_dev;
92 struct mutex mixer_mutex;
93 struct mixer_resources mixer_res;
94 struct hdmi_win_data win_data[MIXER_WIN_NR];
95 enum mixer_version_id mxr_ver;
97 wait_queue_head_t wait_vsync_queue;
98 atomic_t wait_vsync_event;
101 struct mixer_drv_data {
102 enum mixer_version_id version;
106 static const u8 filter_y_horiz_tap8[] = {
107 0, -1, -1, -1, -1, -1, -1, -1,
108 -1, -1, -1, -1, -1, 0, 0, 0,
109 0, 2, 4, 5, 6, 6, 6, 6,
110 6, 5, 5, 4, 3, 2, 1, 1,
111 0, -6, -12, -16, -18, -20, -21, -20,
112 -20, -18, -16, -13, -10, -8, -5, -2,
113 127, 126, 125, 121, 114, 107, 99, 89,
114 79, 68, 57, 46, 35, 25, 16, 8,
117 static const u8 filter_y_vert_tap4[] = {
118 0, -3, -6, -8, -8, -8, -8, -7,
119 -6, -5, -4, -3, -2, -1, -1, 0,
120 127, 126, 124, 118, 111, 102, 92, 81,
121 70, 59, 48, 37, 27, 19, 11, 5,
122 0, 5, 11, 19, 27, 37, 48, 59,
123 70, 81, 92, 102, 111, 118, 124, 126,
124 0, 0, -1, -1, -2, -3, -4, -5,
125 -6, -7, -8, -8, -8, -8, -6, -3,
128 static const u8 filter_cr_horiz_tap4[] = {
129 0, -3, -6, -8, -8, -8, -8, -7,
130 -6, -5, -4, -3, -2, -1, -1, 0,
131 127, 126, 124, 118, 111, 102, 92, 81,
132 70, 59, 48, 37, 27, 19, 11, 5,
135 static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
137 return readl(res->vp_regs + reg_id);
140 static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id,
143 writel(val, res->vp_regs + reg_id);
146 static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id,
149 u32 old = vp_reg_read(res, reg_id);
151 val = (val & mask) | (old & ~mask);
152 writel(val, res->vp_regs + reg_id);
155 static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id)
157 return readl(res->mixer_regs + reg_id);
160 static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id,
163 writel(val, res->mixer_regs + reg_id);
166 static inline void mixer_reg_writemask(struct mixer_resources *res,
167 u32 reg_id, u32 val, u32 mask)
169 u32 old = mixer_reg_read(res, reg_id);
171 val = (val & mask) | (old & ~mask);
172 writel(val, res->mixer_regs + reg_id);
175 static void mixer_regs_dump(struct mixer_context *ctx)
177 #define DUMPREG(reg_id) \
179 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
180 (u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \
186 DUMPREG(MXR_INT_STATUS);
188 DUMPREG(MXR_LAYER_CFG);
189 DUMPREG(MXR_VIDEO_CFG);
191 DUMPREG(MXR_GRAPHIC0_CFG);
192 DUMPREG(MXR_GRAPHIC0_BASE);
193 DUMPREG(MXR_GRAPHIC0_SPAN);
194 DUMPREG(MXR_GRAPHIC0_WH);
195 DUMPREG(MXR_GRAPHIC0_SXY);
196 DUMPREG(MXR_GRAPHIC0_DXY);
198 DUMPREG(MXR_GRAPHIC1_CFG);
199 DUMPREG(MXR_GRAPHIC1_BASE);
200 DUMPREG(MXR_GRAPHIC1_SPAN);
201 DUMPREG(MXR_GRAPHIC1_WH);
202 DUMPREG(MXR_GRAPHIC1_SXY);
203 DUMPREG(MXR_GRAPHIC1_DXY);
207 static void vp_regs_dump(struct mixer_context *ctx)
209 #define DUMPREG(reg_id) \
211 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
212 (u32) readl(ctx->mixer_res.vp_regs + reg_id)); \
217 DUMPREG(VP_SHADOW_UPDATE);
218 DUMPREG(VP_FIELD_ID);
220 DUMPREG(VP_IMG_SIZE_Y);
221 DUMPREG(VP_IMG_SIZE_C);
222 DUMPREG(VP_PER_RATE_CTRL);
223 DUMPREG(VP_TOP_Y_PTR);
224 DUMPREG(VP_BOT_Y_PTR);
225 DUMPREG(VP_TOP_C_PTR);
226 DUMPREG(VP_BOT_C_PTR);
227 DUMPREG(VP_ENDIAN_MODE);
228 DUMPREG(VP_SRC_H_POSITION);
229 DUMPREG(VP_SRC_V_POSITION);
230 DUMPREG(VP_SRC_WIDTH);
231 DUMPREG(VP_SRC_HEIGHT);
232 DUMPREG(VP_DST_H_POSITION);
233 DUMPREG(VP_DST_V_POSITION);
234 DUMPREG(VP_DST_WIDTH);
235 DUMPREG(VP_DST_HEIGHT);
242 static inline void vp_filter_set(struct mixer_resources *res,
243 int reg_id, const u8 *data, unsigned int size)
245 /* assure 4-byte align */
247 for (; size; size -= 4, reg_id += 4, data += 4) {
248 u32 val = (data[0] << 24) | (data[1] << 16) |
249 (data[2] << 8) | data[3];
250 vp_reg_write(res, reg_id, val);
254 static void vp_default_filter(struct mixer_resources *res)
256 vp_filter_set(res, VP_POLY8_Y0_LL,
257 filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
258 vp_filter_set(res, VP_POLY4_Y0_LL,
259 filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
260 vp_filter_set(res, VP_POLY4_C0_LL,
261 filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
264 static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
266 struct mixer_resources *res = &ctx->mixer_res;
268 /* block update on vsync */
269 mixer_reg_writemask(res, MXR_STATUS, enable ?
270 MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
273 vp_reg_write(res, VP_SHADOW_UPDATE, enable ?
274 VP_SHADOW_UPDATE_ENABLE : 0);
277 static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height)
279 struct mixer_resources *res = &ctx->mixer_res;
282 /* choosing between interlace and progressive mode */
283 val = (ctx->interlace ? MXR_CFG_SCAN_INTERLACE :
284 MXR_CFG_SCAN_PROGRASSIVE);
286 /* choosing between porper HD and SD mode */
288 val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
289 else if (height == 576)
290 val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
291 else if (height == 720)
292 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
293 else if (height == 1080)
294 val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
296 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
298 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK);
301 static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
303 struct mixer_resources *res = &ctx->mixer_res;
307 val = MXR_CFG_RGB601_0_255;
308 } else if (height == 576) {
309 val = MXR_CFG_RGB601_0_255;
310 } else if (height == 720) {
311 val = MXR_CFG_RGB709_16_235;
312 mixer_reg_write(res, MXR_CM_COEFF_Y,
313 (1 << 30) | (94 << 20) | (314 << 10) |
315 mixer_reg_write(res, MXR_CM_COEFF_CB,
316 (972 << 20) | (851 << 10) | (225 << 0));
317 mixer_reg_write(res, MXR_CM_COEFF_CR,
318 (225 << 20) | (820 << 10) | (1004 << 0));
319 } else if (height == 1080) {
320 val = MXR_CFG_RGB709_16_235;
321 mixer_reg_write(res, MXR_CM_COEFF_Y,
322 (1 << 30) | (94 << 20) | (314 << 10) |
324 mixer_reg_write(res, MXR_CM_COEFF_CB,
325 (972 << 20) | (851 << 10) | (225 << 0));
326 mixer_reg_write(res, MXR_CM_COEFF_CR,
327 (225 << 20) | (820 << 10) | (1004 << 0));
329 val = MXR_CFG_RGB709_16_235;
330 mixer_reg_write(res, MXR_CM_COEFF_Y,
331 (1 << 30) | (94 << 20) | (314 << 10) |
333 mixer_reg_write(res, MXR_CM_COEFF_CB,
334 (972 << 20) | (851 << 10) | (225 << 0));
335 mixer_reg_write(res, MXR_CM_COEFF_CR,
336 (225 << 20) | (820 << 10) | (1004 << 0));
339 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
342 static void mixer_cfg_layer(struct mixer_context *ctx, int win, bool enable)
344 struct mixer_resources *res = &ctx->mixer_res;
345 u32 val = enable ? ~0 : 0;
349 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
352 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
355 if (ctx->vp_enabled) {
356 vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
357 mixer_reg_writemask(res, MXR_CFG, val,
364 static void mixer_run(struct mixer_context *ctx)
366 struct mixer_resources *res = &ctx->mixer_res;
368 mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
370 mixer_regs_dump(ctx);
373 static void vp_video_buffer(struct mixer_context *ctx, int win)
375 struct mixer_resources *res = &ctx->mixer_res;
377 struct hdmi_win_data *win_data;
378 unsigned int x_ratio, y_ratio;
379 unsigned int buf_num;
380 dma_addr_t luma_addr[2], chroma_addr[2];
381 bool tiled_mode = false;
382 bool crcb_mode = false;
385 win_data = &ctx->win_data[win];
387 switch (win_data->pixel_format) {
388 case DRM_FORMAT_NV12MT:
390 case DRM_FORMAT_NV12:
394 /* TODO: single buffer format NV12, NV21 */
396 /* ignore pixel format at disable time */
397 if (!win_data->dma_addr)
400 DRM_ERROR("pixel format for vp is wrong [%d].\n",
401 win_data->pixel_format);
405 /* scaling feature: (src << 16) / dst */
406 x_ratio = (win_data->src_width << 16) / win_data->crtc_width;
407 y_ratio = (win_data->src_height << 16) / win_data->crtc_height;
410 luma_addr[0] = win_data->dma_addr;
411 chroma_addr[0] = win_data->chroma_dma_addr;
413 luma_addr[0] = win_data->dma_addr;
414 chroma_addr[0] = win_data->dma_addr
415 + (win_data->fb_width * win_data->fb_height);
418 if (win_data->scan_flags & DRM_MODE_FLAG_INTERLACE) {
419 ctx->interlace = true;
421 luma_addr[1] = luma_addr[0] + 0x40;
422 chroma_addr[1] = chroma_addr[0] + 0x40;
424 luma_addr[1] = luma_addr[0] + win_data->fb_width;
425 chroma_addr[1] = chroma_addr[0] + win_data->fb_width;
428 ctx->interlace = false;
433 spin_lock_irqsave(&res->reg_slock, flags);
434 mixer_vsync_set_update(ctx, false);
436 /* interlace or progressive scan mode */
437 val = (ctx->interlace ? ~0 : 0);
438 vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP);
441 val = (crcb_mode ? VP_MODE_NV21 : VP_MODE_NV12);
442 val |= (tiled_mode ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
443 vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK);
445 /* setting size of input image */
446 vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(win_data->fb_width) |
447 VP_IMG_VSIZE(win_data->fb_height));
448 /* chroma height has to reduced by 2 to avoid chroma distorions */
449 vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(win_data->fb_width) |
450 VP_IMG_VSIZE(win_data->fb_height / 2));
452 vp_reg_write(res, VP_SRC_WIDTH, win_data->src_width);
453 vp_reg_write(res, VP_SRC_HEIGHT, win_data->src_height);
454 vp_reg_write(res, VP_SRC_H_POSITION,
455 VP_SRC_H_POSITION_VAL(win_data->fb_x));
456 vp_reg_write(res, VP_SRC_V_POSITION, win_data->fb_y);
458 vp_reg_write(res, VP_DST_WIDTH, win_data->crtc_width);
459 vp_reg_write(res, VP_DST_H_POSITION, win_data->crtc_x);
460 if (ctx->interlace) {
461 vp_reg_write(res, VP_DST_HEIGHT, win_data->crtc_height / 2);
462 vp_reg_write(res, VP_DST_V_POSITION, win_data->crtc_y / 2);
464 vp_reg_write(res, VP_DST_HEIGHT, win_data->crtc_height);
465 vp_reg_write(res, VP_DST_V_POSITION, win_data->crtc_y);
468 vp_reg_write(res, VP_H_RATIO, x_ratio);
469 vp_reg_write(res, VP_V_RATIO, y_ratio);
471 vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
473 /* set buffer address to vp */
474 vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]);
475 vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]);
476 vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]);
477 vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]);
479 mixer_cfg_scan(ctx, win_data->mode_height);
480 mixer_cfg_rgb_fmt(ctx, win_data->mode_height);
481 mixer_cfg_layer(ctx, win, true);
484 mixer_vsync_set_update(ctx, true);
485 spin_unlock_irqrestore(&res->reg_slock, flags);
490 static void mixer_layer_update(struct mixer_context *ctx)
492 struct mixer_resources *res = &ctx->mixer_res;
495 val = mixer_reg_read(res, MXR_CFG);
497 /* allow one update per vsync only */
498 if (!(val & MXR_CFG_LAYER_UPDATE_COUNT_MASK))
499 mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
502 static void mixer_graph_buffer(struct mixer_context *ctx, int win)
504 struct mixer_resources *res = &ctx->mixer_res;
506 struct hdmi_win_data *win_data;
507 unsigned int x_ratio, y_ratio;
508 unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
513 win_data = &ctx->win_data[win];
520 switch (win_data->bpp) {
531 /* 2x scaling feature */
535 dst_x_offset = win_data->crtc_x;
536 dst_y_offset = win_data->crtc_y;
538 /* converting dma address base and source offset */
539 dma_addr = win_data->dma_addr
540 + (win_data->fb_x * win_data->bpp >> 3)
541 + (win_data->fb_y * win_data->fb_width * win_data->bpp >> 3);
545 if (win_data->scan_flags & DRM_MODE_FLAG_INTERLACE)
546 ctx->interlace = true;
548 ctx->interlace = false;
550 spin_lock_irqsave(&res->reg_slock, flags);
551 mixer_vsync_set_update(ctx, false);
554 mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
555 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
558 mixer_reg_write(res, MXR_GRAPHIC_SPAN(win), win_data->fb_width);
560 val = MXR_GRP_WH_WIDTH(win_data->crtc_width);
561 val |= MXR_GRP_WH_HEIGHT(win_data->crtc_height);
562 val |= MXR_GRP_WH_H_SCALE(x_ratio);
563 val |= MXR_GRP_WH_V_SCALE(y_ratio);
564 mixer_reg_write(res, MXR_GRAPHIC_WH(win), val);
566 /* setup offsets in source image */
567 val = MXR_GRP_SXY_SX(src_x_offset);
568 val |= MXR_GRP_SXY_SY(src_y_offset);
569 mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val);
571 /* setup offsets in display image */
572 val = MXR_GRP_DXY_DX(dst_x_offset);
573 val |= MXR_GRP_DXY_DY(dst_y_offset);
574 mixer_reg_write(res, MXR_GRAPHIC_DXY(win), val);
576 /* set buffer address to mixer */
577 mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr);
579 mixer_cfg_scan(ctx, win_data->mode_height);
580 mixer_cfg_rgb_fmt(ctx, win_data->mode_height);
581 mixer_cfg_layer(ctx, win, true);
583 /* layer update mandatory for mixer 16.0.33.0 */
584 if (ctx->mxr_ver == MXR_VER_16_0_33_0)
585 mixer_layer_update(ctx);
589 mixer_vsync_set_update(ctx, true);
590 spin_unlock_irqrestore(&res->reg_slock, flags);
593 static void vp_win_reset(struct mixer_context *ctx)
595 struct mixer_resources *res = &ctx->mixer_res;
598 vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING);
599 for (tries = 100; tries; --tries) {
600 /* waiting until VP_SRESET_PROCESSING is 0 */
601 if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING)
605 WARN(tries == 0, "failed to reset Video Processor\n");
608 static void mixer_win_reset(struct mixer_context *ctx)
610 struct mixer_resources *res = &ctx->mixer_res;
612 u32 val; /* value stored to register */
614 spin_lock_irqsave(&res->reg_slock, flags);
615 mixer_vsync_set_update(ctx, false);
617 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
619 /* set output in RGB888 mode */
620 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
622 /* 16 beat burst in DMA */
623 mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
624 MXR_STATUS_BURST_MASK);
626 /* setting default layer priority: layer1 > layer0 > video
627 * because typical usage scenario would be
629 * layer0 - framebuffer
630 * video - video overlay
632 val = MXR_LAYER_CFG_GRP1_VAL(3);
633 val |= MXR_LAYER_CFG_GRP0_VAL(2);
635 val |= MXR_LAYER_CFG_VP_VAL(1);
636 mixer_reg_write(res, MXR_LAYER_CFG, val);
638 /* setting background color */
639 mixer_reg_write(res, MXR_BG_COLOR0, 0x008080);
640 mixer_reg_write(res, MXR_BG_COLOR1, 0x008080);
641 mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
643 /* setting graphical layers */
644 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
645 val |= MXR_GRP_CFG_WIN_BLEND_EN;
646 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
647 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
648 val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */
650 /* the same configuration for both layers */
651 mixer_reg_write(res, MXR_GRAPHIC_CFG(0), val);
652 mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val);
654 /* setting video layers */
655 val = MXR_GRP_CFG_ALPHA_VAL(0);
656 mixer_reg_write(res, MXR_VIDEO_CFG, val);
658 if (ctx->vp_enabled) {
659 /* configuration of Video Processor Registers */
661 vp_default_filter(res);
664 /* disable all layers */
665 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
666 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
668 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
670 mixer_vsync_set_update(ctx, true);
671 spin_unlock_irqrestore(&res->reg_slock, flags);
674 static int mixer_iommu_on(void *ctx, bool enable)
676 struct exynos_drm_hdmi_context *drm_hdmi_ctx;
677 struct mixer_context *mdata = ctx;
678 struct drm_device *drm_dev;
680 drm_hdmi_ctx = mdata->parent_ctx;
681 drm_dev = drm_hdmi_ctx->drm_dev;
683 if (is_drm_iommu_supported(drm_dev)) {
685 return drm_iommu_attach_device(drm_dev, mdata->dev);
687 drm_iommu_detach_device(drm_dev, mdata->dev);
692 static int mixer_enable_vblank(void *ctx, int pipe)
694 struct mixer_context *mixer_ctx = ctx;
695 struct mixer_resources *res = &mixer_ctx->mixer_res;
697 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
699 mixer_ctx->pipe = pipe;
701 /* enable vsync interrupt */
702 mixer_reg_writemask(res, MXR_INT_EN, MXR_INT_EN_VSYNC,
708 static void mixer_disable_vblank(void *ctx)
710 struct mixer_context *mixer_ctx = ctx;
711 struct mixer_resources *res = &mixer_ctx->mixer_res;
713 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
715 /* disable vsync interrupt */
716 mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
719 static void mixer_win_mode_set(void *ctx,
720 struct exynos_drm_overlay *overlay)
722 struct mixer_context *mixer_ctx = ctx;
723 struct hdmi_win_data *win_data;
726 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
729 DRM_ERROR("overlay is NULL\n");
733 DRM_DEBUG_KMS("set [%d]x[%d] at (%d,%d) to [%d]x[%d] at (%d,%d)\n",
734 overlay->fb_width, overlay->fb_height,
735 overlay->fb_x, overlay->fb_y,
736 overlay->crtc_width, overlay->crtc_height,
737 overlay->crtc_x, overlay->crtc_y);
740 if (win == DEFAULT_ZPOS)
741 win = MIXER_DEFAULT_WIN;
743 if (win < 0 || win > MIXER_WIN_NR) {
744 DRM_ERROR("mixer window[%d] is wrong\n", win);
748 win_data = &mixer_ctx->win_data[win];
750 win_data->dma_addr = overlay->dma_addr[0];
751 win_data->chroma_dma_addr = overlay->dma_addr[1];
752 win_data->pixel_format = overlay->pixel_format;
753 win_data->bpp = overlay->bpp;
755 win_data->crtc_x = overlay->crtc_x;
756 win_data->crtc_y = overlay->crtc_y;
757 win_data->crtc_width = overlay->crtc_width;
758 win_data->crtc_height = overlay->crtc_height;
760 win_data->fb_x = overlay->fb_x;
761 win_data->fb_y = overlay->fb_y;
762 win_data->fb_width = overlay->fb_width;
763 win_data->fb_height = overlay->fb_height;
764 win_data->src_width = overlay->src_width;
765 win_data->src_height = overlay->src_height;
767 win_data->mode_width = overlay->mode_width;
768 win_data->mode_height = overlay->mode_height;
770 win_data->scan_flags = overlay->scan_flag;
773 static void mixer_win_commit(void *ctx, int win)
775 struct mixer_context *mixer_ctx = ctx;
777 DRM_DEBUG_KMS("[%d] %s, win: %d\n", __LINE__, __func__, win);
779 if (win > 1 && mixer_ctx->vp_enabled)
780 vp_video_buffer(mixer_ctx, win);
782 mixer_graph_buffer(mixer_ctx, win);
784 mixer_ctx->win_data[win].enabled = true;
787 static void mixer_win_disable(void *ctx, int win)
789 struct mixer_context *mixer_ctx = ctx;
790 struct mixer_resources *res = &mixer_ctx->mixer_res;
793 DRM_DEBUG_KMS("[%d] %s, win: %d\n", __LINE__, __func__, win);
795 mutex_lock(&mixer_ctx->mixer_mutex);
796 if (!mixer_ctx->powered) {
797 mutex_unlock(&mixer_ctx->mixer_mutex);
798 mixer_ctx->win_data[win].resume = false;
801 mutex_unlock(&mixer_ctx->mixer_mutex);
803 spin_lock_irqsave(&res->reg_slock, flags);
804 mixer_vsync_set_update(mixer_ctx, false);
806 mixer_cfg_layer(mixer_ctx, win, false);
808 mixer_vsync_set_update(mixer_ctx, true);
809 spin_unlock_irqrestore(&res->reg_slock, flags);
811 mixer_ctx->win_data[win].enabled = false;
814 static void mixer_wait_for_vblank(void *ctx)
816 struct mixer_context *mixer_ctx = ctx;
818 mutex_lock(&mixer_ctx->mixer_mutex);
819 if (!mixer_ctx->powered) {
820 mutex_unlock(&mixer_ctx->mixer_mutex);
823 mutex_unlock(&mixer_ctx->mixer_mutex);
825 atomic_set(&mixer_ctx->wait_vsync_event, 1);
828 * wait for MIXER to signal VSYNC interrupt or return after
829 * timeout which is set to 50ms (refresh rate of 20).
831 if (!wait_event_timeout(mixer_ctx->wait_vsync_queue,
832 !atomic_read(&mixer_ctx->wait_vsync_event),
834 DRM_DEBUG_KMS("vblank wait timed out.\n");
837 static void mixer_window_suspend(struct mixer_context *ctx)
839 struct hdmi_win_data *win_data;
842 for (i = 0; i < MIXER_WIN_NR; i++) {
843 win_data = &ctx->win_data[i];
844 win_data->resume = win_data->enabled;
845 mixer_win_disable(ctx, i);
847 mixer_wait_for_vblank(ctx);
850 static void mixer_window_resume(struct mixer_context *ctx)
852 struct hdmi_win_data *win_data;
855 for (i = 0; i < MIXER_WIN_NR; i++) {
856 win_data = &ctx->win_data[i];
857 win_data->enabled = win_data->resume;
858 win_data->resume = false;
862 static void mixer_poweron(struct mixer_context *ctx)
864 struct mixer_resources *res = &ctx->mixer_res;
866 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
868 mutex_lock(&ctx->mixer_mutex);
870 mutex_unlock(&ctx->mixer_mutex);
874 mutex_unlock(&ctx->mixer_mutex);
876 clk_enable(res->mixer);
877 if (ctx->vp_enabled) {
879 clk_enable(res->sclk_mixer);
882 mixer_reg_write(res, MXR_INT_EN, ctx->int_en);
883 mixer_win_reset(ctx);
885 mixer_window_resume(ctx);
888 static void mixer_poweroff(struct mixer_context *ctx)
890 struct mixer_resources *res = &ctx->mixer_res;
892 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
894 mutex_lock(&ctx->mixer_mutex);
897 mutex_unlock(&ctx->mixer_mutex);
899 mixer_window_suspend(ctx);
901 ctx->int_en = mixer_reg_read(res, MXR_INT_EN);
903 clk_disable(res->mixer);
904 if (ctx->vp_enabled) {
905 clk_disable(res->vp);
906 clk_disable(res->sclk_mixer);
909 mutex_lock(&ctx->mixer_mutex);
910 ctx->powered = false;
913 mutex_unlock(&ctx->mixer_mutex);
916 static void mixer_dpms(void *ctx, int mode)
918 struct mixer_context *mixer_ctx = ctx;
920 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
923 case DRM_MODE_DPMS_ON:
924 if (pm_runtime_suspended(mixer_ctx->dev))
925 pm_runtime_get_sync(mixer_ctx->dev);
927 case DRM_MODE_DPMS_STANDBY:
928 case DRM_MODE_DPMS_SUSPEND:
929 case DRM_MODE_DPMS_OFF:
930 if (!pm_runtime_suspended(mixer_ctx->dev))
931 pm_runtime_put_sync(mixer_ctx->dev);
934 DRM_DEBUG_KMS("unknown dpms mode: %d\n", mode);
939 static struct exynos_mixer_ops mixer_ops = {
941 .iommu_on = mixer_iommu_on,
942 .enable_vblank = mixer_enable_vblank,
943 .disable_vblank = mixer_disable_vblank,
944 .wait_for_vblank = mixer_wait_for_vblank,
948 .win_mode_set = mixer_win_mode_set,
949 .win_commit = mixer_win_commit,
950 .win_disable = mixer_win_disable,
953 static irqreturn_t mixer_irq_handler(int irq, void *arg)
955 struct exynos_drm_hdmi_context *drm_hdmi_ctx = arg;
956 struct mixer_context *ctx = drm_hdmi_ctx->ctx;
957 struct mixer_resources *res = &ctx->mixer_res;
958 u32 val, base, shadow;
960 spin_lock(&res->reg_slock);
962 /* read interrupt status for handling and clearing flags for VSYNC */
963 val = mixer_reg_read(res, MXR_INT_STATUS);
966 if (val & MXR_INT_STATUS_VSYNC) {
967 /* interlace scan need to check shadow register */
968 if (ctx->interlace) {
969 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0));
970 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0));
974 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(1));
975 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1));
980 drm_handle_vblank(drm_hdmi_ctx->drm_dev, ctx->pipe);
981 exynos_drm_crtc_finish_pageflip(drm_hdmi_ctx->drm_dev,
984 /* set wait vsync event to zero and wake up queue. */
985 if (atomic_read(&ctx->wait_vsync_event)) {
986 atomic_set(&ctx->wait_vsync_event, 0);
987 DRM_WAKEUP(&ctx->wait_vsync_queue);
992 /* clear interrupts */
993 if (~val & MXR_INT_EN_VSYNC) {
994 /* vsync interrupt use different bit for read and clear */
995 val &= ~MXR_INT_EN_VSYNC;
996 val |= MXR_INT_CLEAR_VSYNC;
998 mixer_reg_write(res, MXR_INT_STATUS, val);
1000 spin_unlock(&res->reg_slock);
1005 static int mixer_resources_init(struct exynos_drm_hdmi_context *ctx,
1006 struct platform_device *pdev)
1008 struct mixer_context *mixer_ctx = ctx->ctx;
1009 struct device *dev = &pdev->dev;
1010 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
1011 struct resource *res;
1014 spin_lock_init(&mixer_res->reg_slock);
1016 mixer_res->mixer = devm_clk_get(dev, "mixer");
1017 if (IS_ERR_OR_NULL(mixer_res->mixer)) {
1018 dev_err(dev, "failed to get clock 'mixer'\n");
1022 mixer_res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
1023 if (IS_ERR_OR_NULL(mixer_res->sclk_hdmi)) {
1024 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
1027 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1029 dev_err(dev, "get memory resource failed.\n");
1033 mixer_res->mixer_regs = devm_ioremap(&pdev->dev, res->start,
1034 resource_size(res));
1035 if (mixer_res->mixer_regs == NULL) {
1036 dev_err(dev, "register mapping failed.\n");
1040 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
1042 dev_err(dev, "get interrupt resource failed.\n");
1046 ret = devm_request_irq(&pdev->dev, res->start, mixer_irq_handler,
1047 0, "drm_mixer", ctx);
1049 dev_err(dev, "request interrupt failed.\n");
1052 mixer_res->irq = res->start;
1057 static int vp_resources_init(struct exynos_drm_hdmi_context *ctx,
1058 struct platform_device *pdev)
1060 struct mixer_context *mixer_ctx = ctx->ctx;
1061 struct device *dev = &pdev->dev;
1062 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
1063 struct resource *res;
1065 mixer_res->vp = devm_clk_get(dev, "vp");
1066 if (IS_ERR_OR_NULL(mixer_res->vp)) {
1067 dev_err(dev, "failed to get clock 'vp'\n");
1070 mixer_res->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
1071 if (IS_ERR_OR_NULL(mixer_res->sclk_mixer)) {
1072 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
1075 mixer_res->sclk_dac = devm_clk_get(dev, "sclk_dac");
1076 if (IS_ERR_OR_NULL(mixer_res->sclk_dac)) {
1077 dev_err(dev, "failed to get clock 'sclk_dac'\n");
1081 if (mixer_res->sclk_hdmi)
1082 clk_set_parent(mixer_res->sclk_mixer, mixer_res->sclk_hdmi);
1084 res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
1086 dev_err(dev, "get memory resource failed.\n");
1090 mixer_res->vp_regs = devm_ioremap(&pdev->dev, res->start,
1091 resource_size(res));
1092 if (mixer_res->vp_regs == NULL) {
1093 dev_err(dev, "register mapping failed.\n");
1100 static struct mixer_drv_data exynos5_mxr_drv_data = {
1101 .version = MXR_VER_16_0_33_0,
1105 static struct mixer_drv_data exynos4_mxr_drv_data = {
1106 .version = MXR_VER_0_0_0_16,
1110 static struct platform_device_id mixer_driver_types[] = {
1112 .name = "s5p-mixer",
1113 .driver_data = (unsigned long)&exynos4_mxr_drv_data,
1115 .name = "exynos5-mixer",
1116 .driver_data = (unsigned long)&exynos5_mxr_drv_data,
1122 static struct of_device_id mixer_match_types[] = {
1124 .compatible = "samsung,exynos5-mixer",
1125 .data = &exynos5_mxr_drv_data,
1131 static int mixer_probe(struct platform_device *pdev)
1133 struct device *dev = &pdev->dev;
1134 struct exynos_drm_hdmi_context *drm_hdmi_ctx;
1135 struct mixer_context *ctx;
1136 struct mixer_drv_data *drv;
1139 dev_info(dev, "probe start\n");
1141 drm_hdmi_ctx = devm_kzalloc(&pdev->dev, sizeof(*drm_hdmi_ctx),
1143 if (!drm_hdmi_ctx) {
1144 DRM_ERROR("failed to allocate common hdmi context.\n");
1148 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1150 DRM_ERROR("failed to alloc mixer context.\n");
1154 mutex_init(&ctx->mixer_mutex);
1157 const struct of_device_id *match;
1158 match = of_match_node(of_match_ptr(mixer_match_types),
1160 drv = (struct mixer_drv_data *)match->data;
1162 drv = (struct mixer_drv_data *)
1163 platform_get_device_id(pdev)->driver_data;
1166 ctx->dev = &pdev->dev;
1167 ctx->parent_ctx = (void *)drm_hdmi_ctx;
1168 drm_hdmi_ctx->ctx = (void *)ctx;
1169 ctx->vp_enabled = drv->is_vp_enabled;
1170 ctx->mxr_ver = drv->version;
1171 DRM_INIT_WAITQUEUE(&ctx->wait_vsync_queue);
1172 atomic_set(&ctx->wait_vsync_event, 0);
1174 platform_set_drvdata(pdev, drm_hdmi_ctx);
1176 /* acquire resources: regs, irqs, clocks */
1177 ret = mixer_resources_init(drm_hdmi_ctx, pdev);
1179 DRM_ERROR("mixer_resources_init failed\n");
1183 if (ctx->vp_enabled) {
1184 /* acquire vp resources: regs, irqs, clocks */
1185 ret = vp_resources_init(drm_hdmi_ctx, pdev);
1187 DRM_ERROR("vp_resources_init failed\n");
1192 /* attach mixer driver to common hdmi. */
1193 exynos_mixer_drv_attach(drm_hdmi_ctx);
1195 /* register specific callback point to common hdmi. */
1196 exynos_mixer_ops_register(&mixer_ops);
1198 pm_runtime_enable(dev);
1204 dev_info(dev, "probe failed\n");
1208 static int mixer_remove(struct platform_device *pdev)
1210 dev_info(&pdev->dev, "remove successful\n");
1212 pm_runtime_disable(&pdev->dev);
1217 #ifdef CONFIG_PM_SLEEP
1218 static int mixer_suspend(struct device *dev)
1220 struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev);
1221 struct mixer_context *ctx = drm_hdmi_ctx->ctx;
1223 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
1225 if (pm_runtime_suspended(dev)) {
1226 DRM_DEBUG_KMS("%s : Already suspended\n", __func__);
1230 mixer_poweroff(ctx);
1235 static int mixer_resume(struct device *dev)
1237 struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev);
1238 struct mixer_context *ctx = drm_hdmi_ctx->ctx;
1240 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
1242 if (!pm_runtime_suspended(dev)) {
1243 DRM_DEBUG_KMS("%s : Already resumed\n", __func__);
1253 #ifdef CONFIG_PM_RUNTIME
1254 static int mixer_runtime_suspend(struct device *dev)
1256 struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev);
1257 struct mixer_context *ctx = drm_hdmi_ctx->ctx;
1259 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
1261 mixer_poweroff(ctx);
1266 static int mixer_runtime_resume(struct device *dev)
1268 struct exynos_drm_hdmi_context *drm_hdmi_ctx = get_mixer_context(dev);
1269 struct mixer_context *ctx = drm_hdmi_ctx->ctx;
1271 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
1279 static const struct dev_pm_ops mixer_pm_ops = {
1280 SET_SYSTEM_SLEEP_PM_OPS(mixer_suspend, mixer_resume)
1281 SET_RUNTIME_PM_OPS(mixer_runtime_suspend, mixer_runtime_resume, NULL)
1284 struct platform_driver mixer_driver = {
1286 .name = "exynos-mixer",
1287 .owner = THIS_MODULE,
1288 .pm = &mixer_pm_ops,
1289 .of_match_table = mixer_match_types,
1291 .probe = mixer_probe,
1292 .remove = mixer_remove,
1293 .id_table = mixer_driver_types,