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_hdmi.h"
40 #define MIXER_WIN_NR 3
41 #define MIXER_DEFAULT_WIN 0
43 #define get_mixer_context(dev) platform_get_drvdata(to_platform_device(dev))
45 struct hdmi_win_data {
48 dma_addr_t chroma_dma_addr;
49 void __iomem *chroma_vaddr;
50 uint32_t pixel_format;
54 unsigned int crtc_width;
55 unsigned int crtc_height;
58 unsigned int fb_width;
59 unsigned int fb_height;
60 unsigned int mode_width;
61 unsigned int mode_height;
62 unsigned int scan_flags;
65 struct mixer_resources {
68 void __iomem *mixer_regs;
69 void __iomem *vp_regs;
73 struct clk *sclk_mixer;
74 struct clk *sclk_hdmi;
78 struct mixer_context {
83 struct mixer_resources mixer_res;
84 struct hdmi_win_data win_data[MIXER_WIN_NR];
87 static const u8 filter_y_horiz_tap8[] = {
88 0, -1, -1, -1, -1, -1, -1, -1,
89 -1, -1, -1, -1, -1, 0, 0, 0,
90 0, 2, 4, 5, 6, 6, 6, 6,
91 6, 5, 5, 4, 3, 2, 1, 1,
92 0, -6, -12, -16, -18, -20, -21, -20,
93 -20, -18, -16, -13, -10, -8, -5, -2,
94 127, 126, 125, 121, 114, 107, 99, 89,
95 79, 68, 57, 46, 35, 25, 16, 8,
98 static const u8 filter_y_vert_tap4[] = {
99 0, -3, -6, -8, -8, -8, -8, -7,
100 -6, -5, -4, -3, -2, -1, -1, 0,
101 127, 126, 124, 118, 111, 102, 92, 81,
102 70, 59, 48, 37, 27, 19, 11, 5,
103 0, 5, 11, 19, 27, 37, 48, 59,
104 70, 81, 92, 102, 111, 118, 124, 126,
105 0, 0, -1, -1, -2, -3, -4, -5,
106 -6, -7, -8, -8, -8, -8, -6, -3,
109 static const u8 filter_cr_horiz_tap4[] = {
110 0, -3, -6, -8, -8, -8, -8, -7,
111 -6, -5, -4, -3, -2, -1, -1, 0,
112 127, 126, 124, 118, 111, 102, 92, 81,
113 70, 59, 48, 37, 27, 19, 11, 5,
116 static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
118 return readl(res->vp_regs + reg_id);
121 static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id,
124 writel(val, res->vp_regs + reg_id);
127 static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id,
130 u32 old = vp_reg_read(res, reg_id);
132 val = (val & mask) | (old & ~mask);
133 writel(val, res->vp_regs + reg_id);
136 static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id)
138 return readl(res->mixer_regs + reg_id);
141 static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id,
144 writel(val, res->mixer_regs + reg_id);
147 static inline void mixer_reg_writemask(struct mixer_resources *res,
148 u32 reg_id, u32 val, u32 mask)
150 u32 old = mixer_reg_read(res, reg_id);
152 val = (val & mask) | (old & ~mask);
153 writel(val, res->mixer_regs + reg_id);
156 static void mixer_regs_dump(struct mixer_context *ctx)
158 #define DUMPREG(reg_id) \
160 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
161 (u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \
167 DUMPREG(MXR_INT_STATUS);
169 DUMPREG(MXR_LAYER_CFG);
170 DUMPREG(MXR_VIDEO_CFG);
172 DUMPREG(MXR_GRAPHIC0_CFG);
173 DUMPREG(MXR_GRAPHIC0_BASE);
174 DUMPREG(MXR_GRAPHIC0_SPAN);
175 DUMPREG(MXR_GRAPHIC0_WH);
176 DUMPREG(MXR_GRAPHIC0_SXY);
177 DUMPREG(MXR_GRAPHIC0_DXY);
179 DUMPREG(MXR_GRAPHIC1_CFG);
180 DUMPREG(MXR_GRAPHIC1_BASE);
181 DUMPREG(MXR_GRAPHIC1_SPAN);
182 DUMPREG(MXR_GRAPHIC1_WH);
183 DUMPREG(MXR_GRAPHIC1_SXY);
184 DUMPREG(MXR_GRAPHIC1_DXY);
188 static void vp_regs_dump(struct mixer_context *ctx)
190 #define DUMPREG(reg_id) \
192 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
193 (u32) readl(ctx->mixer_res.vp_regs + reg_id)); \
198 DUMPREG(VP_SHADOW_UPDATE);
199 DUMPREG(VP_FIELD_ID);
201 DUMPREG(VP_IMG_SIZE_Y);
202 DUMPREG(VP_IMG_SIZE_C);
203 DUMPREG(VP_PER_RATE_CTRL);
204 DUMPREG(VP_TOP_Y_PTR);
205 DUMPREG(VP_BOT_Y_PTR);
206 DUMPREG(VP_TOP_C_PTR);
207 DUMPREG(VP_BOT_C_PTR);
208 DUMPREG(VP_ENDIAN_MODE);
209 DUMPREG(VP_SRC_H_POSITION);
210 DUMPREG(VP_SRC_V_POSITION);
211 DUMPREG(VP_SRC_WIDTH);
212 DUMPREG(VP_SRC_HEIGHT);
213 DUMPREG(VP_DST_H_POSITION);
214 DUMPREG(VP_DST_V_POSITION);
215 DUMPREG(VP_DST_WIDTH);
216 DUMPREG(VP_DST_HEIGHT);
223 static inline void vp_filter_set(struct mixer_resources *res,
224 int reg_id, const u8 *data, unsigned int size)
226 /* assure 4-byte align */
228 for (; size; size -= 4, reg_id += 4, data += 4) {
229 u32 val = (data[0] << 24) | (data[1] << 16) |
230 (data[2] << 8) | data[3];
231 vp_reg_write(res, reg_id, val);
235 static void vp_default_filter(struct mixer_resources *res)
237 vp_filter_set(res, VP_POLY8_Y0_LL,
238 filter_y_horiz_tap8, sizeof filter_y_horiz_tap8);
239 vp_filter_set(res, VP_POLY4_Y0_LL,
240 filter_y_vert_tap4, sizeof filter_y_vert_tap4);
241 vp_filter_set(res, VP_POLY4_C0_LL,
242 filter_cr_horiz_tap4, sizeof filter_cr_horiz_tap4);
245 static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
247 struct mixer_resources *res = &ctx->mixer_res;
249 /* block update on vsync */
250 mixer_reg_writemask(res, MXR_STATUS, enable ?
251 MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
253 vp_reg_write(res, VP_SHADOW_UPDATE, enable ?
254 VP_SHADOW_UPDATE_ENABLE : 0);
257 static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height)
259 struct mixer_resources *res = &ctx->mixer_res;
262 /* choosing between interlace and progressive mode */
263 val = (ctx->interlace ? MXR_CFG_SCAN_INTERLACE :
264 MXR_CFG_SCAN_PROGRASSIVE);
266 /* choosing between porper HD and SD mode */
268 val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
269 else if (height == 576)
270 val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
271 else if (height == 720)
272 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
273 else if (height == 1080)
274 val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
276 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
278 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK);
281 static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
283 struct mixer_resources *res = &ctx->mixer_res;
287 val = MXR_CFG_RGB601_0_255;
288 } else if (height == 576) {
289 val = MXR_CFG_RGB601_0_255;
290 } else if (height == 720) {
291 val = MXR_CFG_RGB709_16_235;
292 mixer_reg_write(res, MXR_CM_COEFF_Y,
293 (1 << 30) | (94 << 20) | (314 << 10) |
295 mixer_reg_write(res, MXR_CM_COEFF_CB,
296 (972 << 20) | (851 << 10) | (225 << 0));
297 mixer_reg_write(res, MXR_CM_COEFF_CR,
298 (225 << 20) | (820 << 10) | (1004 << 0));
299 } else if (height == 1080) {
300 val = MXR_CFG_RGB709_16_235;
301 mixer_reg_write(res, MXR_CM_COEFF_Y,
302 (1 << 30) | (94 << 20) | (314 << 10) |
304 mixer_reg_write(res, MXR_CM_COEFF_CB,
305 (972 << 20) | (851 << 10) | (225 << 0));
306 mixer_reg_write(res, MXR_CM_COEFF_CR,
307 (225 << 20) | (820 << 10) | (1004 << 0));
309 val = MXR_CFG_RGB709_16_235;
310 mixer_reg_write(res, MXR_CM_COEFF_Y,
311 (1 << 30) | (94 << 20) | (314 << 10) |
313 mixer_reg_write(res, MXR_CM_COEFF_CB,
314 (972 << 20) | (851 << 10) | (225 << 0));
315 mixer_reg_write(res, MXR_CM_COEFF_CR,
316 (225 << 20) | (820 << 10) | (1004 << 0));
319 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
322 static void mixer_cfg_layer(struct mixer_context *ctx, int win, bool enable)
324 struct mixer_resources *res = &ctx->mixer_res;
325 u32 val = enable ? ~0 : 0;
329 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
332 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
335 vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
336 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_VP_ENABLE);
341 static void mixer_run(struct mixer_context *ctx)
343 struct mixer_resources *res = &ctx->mixer_res;
345 mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
347 mixer_regs_dump(ctx);
350 static void vp_video_buffer(struct mixer_context *ctx, int win)
352 struct mixer_resources *res = &ctx->mixer_res;
354 struct hdmi_win_data *win_data;
355 unsigned int full_width, full_height, width, height;
356 unsigned int x_ratio, y_ratio;
357 unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
358 unsigned int mode_width, mode_height;
359 unsigned int buf_num;
360 dma_addr_t luma_addr[2], chroma_addr[2];
361 bool tiled_mode = false;
362 bool crcb_mode = false;
365 win_data = &ctx->win_data[win];
367 switch (win_data->pixel_format) {
368 case DRM_FORMAT_NV12MT:
370 case DRM_FORMAT_NV12M:
374 /* TODO: single buffer format NV12, NV21 */
376 /* ignore pixel format at disable time */
377 if (!win_data->dma_addr)
380 DRM_ERROR("pixel format for vp is wrong [%d].\n",
381 win_data->pixel_format);
385 full_width = win_data->fb_width;
386 full_height = win_data->fb_height;
387 width = win_data->crtc_width;
388 height = win_data->crtc_height;
389 mode_width = win_data->mode_width;
390 mode_height = win_data->mode_height;
392 /* scaling feature: (src << 16) / dst */
393 x_ratio = (width << 16) / width;
394 y_ratio = (height << 16) / height;
396 src_x_offset = win_data->fb_x;
397 src_y_offset = win_data->fb_y;
398 dst_x_offset = win_data->crtc_x;
399 dst_y_offset = win_data->crtc_y;
402 luma_addr[0] = win_data->dma_addr;
403 chroma_addr[0] = win_data->chroma_dma_addr;
405 luma_addr[0] = win_data->dma_addr;
406 chroma_addr[0] = win_data->dma_addr
407 + (full_width * full_height);
410 if (win_data->scan_flags & DRM_MODE_FLAG_INTERLACE) {
411 ctx->interlace = true;
413 luma_addr[1] = luma_addr[0] + 0x40;
414 chroma_addr[1] = chroma_addr[0] + 0x40;
416 luma_addr[1] = luma_addr[0] + full_width;
417 chroma_addr[1] = chroma_addr[0] + full_width;
420 ctx->interlace = false;
425 spin_lock_irqsave(&res->reg_slock, flags);
426 mixer_vsync_set_update(ctx, false);
428 /* interlace or progressive scan mode */
429 val = (ctx->interlace ? ~0 : 0);
430 vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP);
433 val = (crcb_mode ? VP_MODE_NV21 : VP_MODE_NV12);
434 val |= (tiled_mode ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
435 vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK);
437 /* setting size of input image */
438 vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(full_width) |
439 VP_IMG_VSIZE(full_height));
440 /* chroma height has to reduced by 2 to avoid chroma distorions */
441 vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(full_width) |
442 VP_IMG_VSIZE(full_height / 2));
444 vp_reg_write(res, VP_SRC_WIDTH, width);
445 vp_reg_write(res, VP_SRC_HEIGHT, height);
446 vp_reg_write(res, VP_SRC_H_POSITION,
447 VP_SRC_H_POSITION_VAL(src_x_offset));
448 vp_reg_write(res, VP_SRC_V_POSITION, src_y_offset);
450 vp_reg_write(res, VP_DST_WIDTH, width);
451 vp_reg_write(res, VP_DST_H_POSITION, dst_x_offset);
452 if (ctx->interlace) {
453 vp_reg_write(res, VP_DST_HEIGHT, height / 2);
454 vp_reg_write(res, VP_DST_V_POSITION, dst_y_offset / 2);
456 vp_reg_write(res, VP_DST_HEIGHT, height);
457 vp_reg_write(res, VP_DST_V_POSITION, dst_y_offset);
460 vp_reg_write(res, VP_H_RATIO, x_ratio);
461 vp_reg_write(res, VP_V_RATIO, y_ratio);
463 vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
465 /* set buffer address to vp */
466 vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]);
467 vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]);
468 vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]);
469 vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]);
471 mixer_cfg_scan(ctx, mode_height);
472 mixer_cfg_rgb_fmt(ctx, mode_height);
473 mixer_cfg_layer(ctx, win, true);
476 mixer_vsync_set_update(ctx, true);
477 spin_unlock_irqrestore(&res->reg_slock, flags);
482 static void mixer_graph_buffer(struct mixer_context *ctx, int win)
484 struct mixer_resources *res = &ctx->mixer_res;
486 struct hdmi_win_data *win_data;
487 unsigned int full_width, width, height;
488 unsigned int x_ratio, y_ratio;
489 unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
490 unsigned int mode_width, mode_height;
495 win_data = &ctx->win_data[win];
502 switch (win_data->bpp) {
513 dma_addr = win_data->dma_addr;
514 full_width = win_data->fb_width;
515 width = win_data->crtc_width;
516 height = win_data->crtc_height;
517 mode_width = win_data->mode_width;
518 mode_height = win_data->mode_height;
520 /* 2x scaling feature */
524 src_x_offset = win_data->fb_x;
525 src_y_offset = win_data->fb_y;
526 dst_x_offset = win_data->crtc_x;
527 dst_y_offset = win_data->crtc_y;
529 /* converting dma address base and source offset */
531 + (src_x_offset * win_data->bpp >> 3)
532 + (src_y_offset * full_width * win_data->bpp >> 3);
536 if (win_data->scan_flags & DRM_MODE_FLAG_INTERLACE)
537 ctx->interlace = true;
539 ctx->interlace = false;
541 spin_lock_irqsave(&res->reg_slock, flags);
542 mixer_vsync_set_update(ctx, false);
545 mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
546 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
549 mixer_reg_write(res, MXR_GRAPHIC_SPAN(win), full_width);
551 val = MXR_GRP_WH_WIDTH(width);
552 val |= MXR_GRP_WH_HEIGHT(height);
553 val |= MXR_GRP_WH_H_SCALE(x_ratio);
554 val |= MXR_GRP_WH_V_SCALE(y_ratio);
555 mixer_reg_write(res, MXR_GRAPHIC_WH(win), val);
557 /* setup offsets in source image */
558 val = MXR_GRP_SXY_SX(src_x_offset);
559 val |= MXR_GRP_SXY_SY(src_y_offset);
560 mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val);
562 /* setup offsets in display image */
563 val = MXR_GRP_DXY_DX(dst_x_offset);
564 val |= MXR_GRP_DXY_DY(dst_y_offset);
565 mixer_reg_write(res, MXR_GRAPHIC_DXY(win), val);
567 /* set buffer address to mixer */
568 mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr);
570 mixer_cfg_scan(ctx, mode_height);
571 mixer_cfg_rgb_fmt(ctx, mode_height);
572 mixer_cfg_layer(ctx, win, true);
575 mixer_vsync_set_update(ctx, true);
576 spin_unlock_irqrestore(&res->reg_slock, flags);
579 static void vp_win_reset(struct mixer_context *ctx)
581 struct mixer_resources *res = &ctx->mixer_res;
584 vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING);
585 for (tries = 100; tries; --tries) {
586 /* waiting until VP_SRESET_PROCESSING is 0 */
587 if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING)
591 WARN(tries == 0, "failed to reset Video Processor\n");
594 static int mixer_enable_vblank(void *ctx, int pipe)
596 struct mixer_context *mixer_ctx = ctx;
597 struct mixer_resources *res = &mixer_ctx->mixer_res;
599 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
601 mixer_ctx->pipe = pipe;
603 /* enable vsync interrupt */
604 mixer_reg_writemask(res, MXR_INT_EN, MXR_INT_EN_VSYNC,
610 static void mixer_disable_vblank(void *ctx)
612 struct mixer_context *mixer_ctx = ctx;
613 struct mixer_resources *res = &mixer_ctx->mixer_res;
615 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
617 /* disable vsync interrupt */
618 mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
621 static void mixer_win_mode_set(void *ctx,
622 struct exynos_drm_overlay *overlay)
624 struct mixer_context *mixer_ctx = ctx;
625 struct hdmi_win_data *win_data;
628 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
631 DRM_ERROR("overlay is NULL\n");
635 DRM_DEBUG_KMS("set [%d]x[%d] at (%d,%d) to [%d]x[%d] at (%d,%d)\n",
636 overlay->fb_width, overlay->fb_height,
637 overlay->fb_x, overlay->fb_y,
638 overlay->crtc_width, overlay->crtc_height,
639 overlay->crtc_x, overlay->crtc_y);
642 if (win == DEFAULT_ZPOS)
643 win = MIXER_DEFAULT_WIN;
645 if (win < 0 || win > MIXER_WIN_NR) {
646 DRM_ERROR("overlay plane[%d] is wrong\n", win);
650 win_data = &mixer_ctx->win_data[win];
652 win_data->dma_addr = overlay->dma_addr[0];
653 win_data->vaddr = overlay->vaddr[0];
654 win_data->chroma_dma_addr = overlay->dma_addr[1];
655 win_data->chroma_vaddr = overlay->vaddr[1];
656 win_data->pixel_format = overlay->pixel_format;
657 win_data->bpp = overlay->bpp;
659 win_data->crtc_x = overlay->crtc_x;
660 win_data->crtc_y = overlay->crtc_y;
661 win_data->crtc_width = overlay->crtc_width;
662 win_data->crtc_height = overlay->crtc_height;
664 win_data->fb_x = overlay->fb_x;
665 win_data->fb_y = overlay->fb_y;
666 win_data->fb_width = overlay->fb_width;
667 win_data->fb_height = overlay->fb_height;
669 win_data->mode_width = overlay->mode_width;
670 win_data->mode_height = overlay->mode_height;
672 win_data->scan_flags = overlay->scan_flag;
675 static void mixer_win_commit(void *ctx, int zpos)
677 struct mixer_context *mixer_ctx = ctx;
680 DRM_DEBUG_KMS("[%d] %s, win: %d\n", __LINE__, __func__, win);
682 if (win == DEFAULT_ZPOS)
683 win = MIXER_DEFAULT_WIN;
685 if (win < 0 || win > MIXER_WIN_NR) {
686 DRM_ERROR("overlay plane[%d] is wrong\n", win);
691 vp_video_buffer(mixer_ctx, win);
693 mixer_graph_buffer(mixer_ctx, win);
696 static void mixer_win_disable(void *ctx, int zpos)
698 struct mixer_context *mixer_ctx = ctx;
699 struct mixer_resources *res = &mixer_ctx->mixer_res;
703 DRM_DEBUG_KMS("[%d] %s, win: %d\n", __LINE__, __func__, win);
705 if (win == DEFAULT_ZPOS)
706 win = MIXER_DEFAULT_WIN;
708 if (win < 0 || win > MIXER_WIN_NR) {
709 DRM_ERROR("overlay plane[%d] is wrong\n", win);
713 spin_lock_irqsave(&res->reg_slock, flags);
714 mixer_vsync_set_update(mixer_ctx, false);
716 mixer_cfg_layer(mixer_ctx, win, false);
718 mixer_vsync_set_update(mixer_ctx, true);
719 spin_unlock_irqrestore(&res->reg_slock, flags);
722 static struct exynos_mixer_ops mixer_ops = {
724 .enable_vblank = mixer_enable_vblank,
725 .disable_vblank = mixer_disable_vblank,
728 .win_mode_set = mixer_win_mode_set,
729 .win_commit = mixer_win_commit,
730 .win_disable = mixer_win_disable,
733 /* for pageflip event */
734 static void mixer_finish_pageflip(struct drm_device *drm_dev, int crtc)
736 struct exynos_drm_private *dev_priv = drm_dev->dev_private;
737 struct drm_pending_vblank_event *e, *t;
740 bool is_checked = false;
742 spin_lock_irqsave(&drm_dev->event_lock, flags);
744 list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list,
746 /* if event's pipe isn't same as crtc then ignore it. */
751 do_gettimeofday(&now);
752 e->event.sequence = 0;
753 e->event.tv_sec = now.tv_sec;
754 e->event.tv_usec = now.tv_usec;
756 list_move_tail(&e->base.link, &e->base.file_priv->event_list);
757 wake_up_interruptible(&e->base.file_priv->event_wait);
762 * call drm_vblank_put only in case that drm_vblank_get was
765 if (atomic_read(&drm_dev->vblank_refcount[crtc]) > 0)
766 drm_vblank_put(drm_dev, crtc);
768 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
771 static irqreturn_t mixer_irq_handler(int irq, void *arg)
773 struct exynos_drm_hdmi_context *drm_hdmi_ctx = arg;
774 struct mixer_context *ctx = drm_hdmi_ctx->ctx;
775 struct mixer_resources *res = &ctx->mixer_res;
778 spin_lock(&res->reg_slock);
780 /* read interrupt status for handling and clearing flags for VSYNC */
781 val = mixer_reg_read(res, MXR_INT_STATUS);
784 if (val & MXR_INT_STATUS_VSYNC) {
785 /* interlace scan need to check shadow register */
786 if (ctx->interlace) {
787 val_base = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0));
788 if (ctx->win_data[0].dma_addr != val_base)
791 val_base = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1));
792 if (ctx->win_data[1].dma_addr != val_base)
796 drm_handle_vblank(drm_hdmi_ctx->drm_dev, ctx->pipe);
797 mixer_finish_pageflip(drm_hdmi_ctx->drm_dev, ctx->pipe);
801 /* clear interrupts */
802 if (~val & MXR_INT_EN_VSYNC) {
803 /* vsync interrupt use different bit for read and clear */
804 val &= ~MXR_INT_EN_VSYNC;
805 val |= MXR_INT_CLEAR_VSYNC;
807 mixer_reg_write(res, MXR_INT_STATUS, val);
809 spin_unlock(&res->reg_slock);
814 static void mixer_win_reset(struct mixer_context *ctx)
816 struct mixer_resources *res = &ctx->mixer_res;
818 u32 val; /* value stored to register */
820 spin_lock_irqsave(&res->reg_slock, flags);
821 mixer_vsync_set_update(ctx, false);
823 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
825 /* set output in RGB888 mode */
826 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
828 /* 16 beat burst in DMA */
829 mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
830 MXR_STATUS_BURST_MASK);
832 /* setting default layer priority: layer1 > layer0 > video
833 * because typical usage scenario would be
835 * layer0 - framebuffer
836 * video - video overlay
838 val = MXR_LAYER_CFG_GRP1_VAL(3);
839 val |= MXR_LAYER_CFG_GRP0_VAL(2);
840 val |= MXR_LAYER_CFG_VP_VAL(1);
841 mixer_reg_write(res, MXR_LAYER_CFG, val);
843 /* setting background color */
844 mixer_reg_write(res, MXR_BG_COLOR0, 0x008080);
845 mixer_reg_write(res, MXR_BG_COLOR1, 0x008080);
846 mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
848 /* setting graphical layers */
850 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
851 val |= MXR_GRP_CFG_WIN_BLEND_EN;
852 val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */
854 /* the same configuration for both layers */
855 mixer_reg_write(res, MXR_GRAPHIC_CFG(0), val);
857 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
858 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
859 mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val);
861 /* configuration of Video Processor Registers */
863 vp_default_filter(res);
865 /* disable all layers */
866 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
867 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
868 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
870 mixer_vsync_set_update(ctx, true);
871 spin_unlock_irqrestore(&res->reg_slock, flags);
874 static void mixer_resource_poweron(struct mixer_context *ctx)
876 struct mixer_resources *res = &ctx->mixer_res;
878 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
880 clk_enable(res->mixer);
882 clk_enable(res->sclk_mixer);
884 mixer_win_reset(ctx);
887 static void mixer_resource_poweroff(struct mixer_context *ctx)
889 struct mixer_resources *res = &ctx->mixer_res;
891 DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
893 clk_disable(res->mixer);
894 clk_disable(res->vp);
895 clk_disable(res->sclk_mixer);
898 static int mixer_runtime_resume(struct device *dev)
900 struct exynos_drm_hdmi_context *ctx = get_mixer_context(dev);
902 DRM_DEBUG_KMS("resume - start\n");
904 mixer_resource_poweron(ctx->ctx);
909 static int mixer_runtime_suspend(struct device *dev)
911 struct exynos_drm_hdmi_context *ctx = get_mixer_context(dev);
913 DRM_DEBUG_KMS("suspend - start\n");
915 mixer_resource_poweroff(ctx->ctx);
920 static const struct dev_pm_ops mixer_pm_ops = {
921 .runtime_suspend = mixer_runtime_suspend,
922 .runtime_resume = mixer_runtime_resume,
925 static int __devinit mixer_resources_init(struct exynos_drm_hdmi_context *ctx,
926 struct platform_device *pdev)
928 struct mixer_context *mixer_ctx = ctx->ctx;
929 struct device *dev = &pdev->dev;
930 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
931 struct resource *res;
934 mixer_res->dev = dev;
935 spin_lock_init(&mixer_res->reg_slock);
937 mixer_res->mixer = clk_get(dev, "mixer");
938 if (IS_ERR_OR_NULL(mixer_res->mixer)) {
939 dev_err(dev, "failed to get clock 'mixer'\n");
943 mixer_res->vp = clk_get(dev, "vp");
944 if (IS_ERR_OR_NULL(mixer_res->vp)) {
945 dev_err(dev, "failed to get clock 'vp'\n");
949 mixer_res->sclk_mixer = clk_get(dev, "sclk_mixer");
950 if (IS_ERR_OR_NULL(mixer_res->sclk_mixer)) {
951 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
955 mixer_res->sclk_hdmi = clk_get(dev, "sclk_hdmi");
956 if (IS_ERR_OR_NULL(mixer_res->sclk_hdmi)) {
957 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
961 mixer_res->sclk_dac = clk_get(dev, "sclk_dac");
962 if (IS_ERR_OR_NULL(mixer_res->sclk_dac)) {
963 dev_err(dev, "failed to get clock 'sclk_dac'\n");
967 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "mxr");
969 dev_err(dev, "get memory resource failed.\n");
974 clk_set_parent(mixer_res->sclk_mixer, mixer_res->sclk_hdmi);
976 mixer_res->mixer_regs = ioremap(res->start, resource_size(res));
977 if (mixer_res->mixer_regs == NULL) {
978 dev_err(dev, "register mapping failed.\n");
983 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vp");
985 dev_err(dev, "get memory resource failed.\n");
987 goto fail_mixer_regs;
990 mixer_res->vp_regs = ioremap(res->start, resource_size(res));
991 if (mixer_res->vp_regs == NULL) {
992 dev_err(dev, "register mapping failed.\n");
994 goto fail_mixer_regs;
997 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "irq");
999 dev_err(dev, "get interrupt resource failed.\n");
1004 ret = request_irq(res->start, mixer_irq_handler, 0, "drm_mixer", ctx);
1006 dev_err(dev, "request interrupt failed.\n");
1009 mixer_res->irq = res->start;
1014 iounmap(mixer_res->vp_regs);
1017 iounmap(mixer_res->mixer_regs);
1020 if (!IS_ERR_OR_NULL(mixer_res->sclk_dac))
1021 clk_put(mixer_res->sclk_dac);
1022 if (!IS_ERR_OR_NULL(mixer_res->sclk_hdmi))
1023 clk_put(mixer_res->sclk_hdmi);
1024 if (!IS_ERR_OR_NULL(mixer_res->sclk_mixer))
1025 clk_put(mixer_res->sclk_mixer);
1026 if (!IS_ERR_OR_NULL(mixer_res->vp))
1027 clk_put(mixer_res->vp);
1028 if (!IS_ERR_OR_NULL(mixer_res->mixer))
1029 clk_put(mixer_res->mixer);
1030 mixer_res->dev = NULL;
1034 static void mixer_resources_cleanup(struct mixer_context *ctx)
1036 struct mixer_resources *res = &ctx->mixer_res;
1038 disable_irq(res->irq);
1039 free_irq(res->irq, ctx);
1041 iounmap(res->vp_regs);
1042 iounmap(res->mixer_regs);
1045 static int __devinit mixer_probe(struct platform_device *pdev)
1047 struct device *dev = &pdev->dev;
1048 struct exynos_drm_hdmi_context *drm_hdmi_ctx;
1049 struct mixer_context *ctx;
1052 dev_info(dev, "probe start\n");
1054 drm_hdmi_ctx = kzalloc(sizeof(*drm_hdmi_ctx), GFP_KERNEL);
1055 if (!drm_hdmi_ctx) {
1056 DRM_ERROR("failed to allocate common hdmi context.\n");
1060 ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1062 DRM_ERROR("failed to alloc mixer context.\n");
1063 kfree(drm_hdmi_ctx);
1067 drm_hdmi_ctx->ctx = (void *)ctx;
1069 platform_set_drvdata(pdev, drm_hdmi_ctx);
1071 /* acquire resources: regs, irqs, clocks */
1072 ret = mixer_resources_init(drm_hdmi_ctx, pdev);
1076 /* register specific callback point to common hdmi. */
1077 exynos_mixer_ops_register(&mixer_ops);
1079 mixer_resource_poweron(ctx);
1085 dev_info(dev, "probe failed\n");
1089 static int mixer_remove(struct platform_device *pdev)
1091 struct device *dev = &pdev->dev;
1092 struct exynos_drm_hdmi_context *drm_hdmi_ctx =
1093 platform_get_drvdata(pdev);
1094 struct mixer_context *ctx = drm_hdmi_ctx->ctx;
1096 dev_info(dev, "remove successful\n");
1098 mixer_resource_poweroff(ctx);
1099 mixer_resources_cleanup(ctx);
1104 struct platform_driver mixer_driver = {
1106 .name = "s5p-mixer",
1107 .owner = THIS_MODULE,
1108 .pm = &mixer_pm_ops,
1110 .probe = mixer_probe,
1111 .remove = __devexit_p(mixer_remove),