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/platform_device.h>
27 #include <linux/interrupt.h>
28 #include <linux/irq.h>
29 #include <linux/delay.h>
30 #include <linux/pm_runtime.h>
31 #include <linux/clk.h>
32 #include <linux/regulator/consumer.h>
34 #include <linux/component.h>
36 #include <drm/exynos_drm.h>
38 #include "exynos_drm_drv.h"
39 #include "exynos_drm_crtc.h"
40 #include "exynos_drm_plane.h"
41 #include "exynos_drm_iommu.h"
42 #include "exynos_mixer.h"
44 #define MIXER_WIN_NR 3
45 #define MIXER_DEFAULT_WIN 0
47 /* The pixelformats that are natively supported by the mixer. */
48 #define MXR_FORMAT_RGB565 4
49 #define MXR_FORMAT_ARGB1555 5
50 #define MXR_FORMAT_ARGB4444 6
51 #define MXR_FORMAT_ARGB8888 7
53 struct mixer_resources {
55 void __iomem *mixer_regs;
56 void __iomem *vp_regs;
61 struct clk *sclk_mixer;
62 struct clk *sclk_hdmi;
63 struct clk *mout_mixer;
66 enum mixer_version_id {
72 struct mixer_context {
73 struct platform_device *pdev;
75 struct drm_device *drm_dev;
76 struct exynos_drm_crtc *crtc;
77 struct exynos_drm_plane planes[MIXER_WIN_NR];
85 struct mutex mixer_mutex;
86 struct mixer_resources mixer_res;
87 enum mixer_version_id mxr_ver;
88 wait_queue_head_t wait_vsync_queue;
89 atomic_t wait_vsync_event;
92 struct mixer_drv_data {
93 enum mixer_version_id version;
98 static const u8 filter_y_horiz_tap8[] = {
99 0, -1, -1, -1, -1, -1, -1, -1,
100 -1, -1, -1, -1, -1, 0, 0, 0,
101 0, 2, 4, 5, 6, 6, 6, 6,
102 6, 5, 5, 4, 3, 2, 1, 1,
103 0, -6, -12, -16, -18, -20, -21, -20,
104 -20, -18, -16, -13, -10, -8, -5, -2,
105 127, 126, 125, 121, 114, 107, 99, 89,
106 79, 68, 57, 46, 35, 25, 16, 8,
109 static const u8 filter_y_vert_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,
114 0, 5, 11, 19, 27, 37, 48, 59,
115 70, 81, 92, 102, 111, 118, 124, 126,
116 0, 0, -1, -1, -2, -3, -4, -5,
117 -6, -7, -8, -8, -8, -8, -6, -3,
120 static const u8 filter_cr_horiz_tap4[] = {
121 0, -3, -6, -8, -8, -8, -8, -7,
122 -6, -5, -4, -3, -2, -1, -1, 0,
123 127, 126, 124, 118, 111, 102, 92, 81,
124 70, 59, 48, 37, 27, 19, 11, 5,
127 static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
129 return readl(res->vp_regs + reg_id);
132 static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id,
135 writel(val, res->vp_regs + reg_id);
138 static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id,
141 u32 old = vp_reg_read(res, reg_id);
143 val = (val & mask) | (old & ~mask);
144 writel(val, res->vp_regs + reg_id);
147 static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id)
149 return readl(res->mixer_regs + reg_id);
152 static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id,
155 writel(val, res->mixer_regs + reg_id);
158 static inline void mixer_reg_writemask(struct mixer_resources *res,
159 u32 reg_id, u32 val, u32 mask)
161 u32 old = mixer_reg_read(res, reg_id);
163 val = (val & mask) | (old & ~mask);
164 writel(val, res->mixer_regs + reg_id);
167 static void mixer_regs_dump(struct mixer_context *ctx)
169 #define DUMPREG(reg_id) \
171 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
172 (u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \
178 DUMPREG(MXR_INT_STATUS);
180 DUMPREG(MXR_LAYER_CFG);
181 DUMPREG(MXR_VIDEO_CFG);
183 DUMPREG(MXR_GRAPHIC0_CFG);
184 DUMPREG(MXR_GRAPHIC0_BASE);
185 DUMPREG(MXR_GRAPHIC0_SPAN);
186 DUMPREG(MXR_GRAPHIC0_WH);
187 DUMPREG(MXR_GRAPHIC0_SXY);
188 DUMPREG(MXR_GRAPHIC0_DXY);
190 DUMPREG(MXR_GRAPHIC1_CFG);
191 DUMPREG(MXR_GRAPHIC1_BASE);
192 DUMPREG(MXR_GRAPHIC1_SPAN);
193 DUMPREG(MXR_GRAPHIC1_WH);
194 DUMPREG(MXR_GRAPHIC1_SXY);
195 DUMPREG(MXR_GRAPHIC1_DXY);
199 static void vp_regs_dump(struct mixer_context *ctx)
201 #define DUMPREG(reg_id) \
203 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
204 (u32) readl(ctx->mixer_res.vp_regs + reg_id)); \
209 DUMPREG(VP_SHADOW_UPDATE);
210 DUMPREG(VP_FIELD_ID);
212 DUMPREG(VP_IMG_SIZE_Y);
213 DUMPREG(VP_IMG_SIZE_C);
214 DUMPREG(VP_PER_RATE_CTRL);
215 DUMPREG(VP_TOP_Y_PTR);
216 DUMPREG(VP_BOT_Y_PTR);
217 DUMPREG(VP_TOP_C_PTR);
218 DUMPREG(VP_BOT_C_PTR);
219 DUMPREG(VP_ENDIAN_MODE);
220 DUMPREG(VP_SRC_H_POSITION);
221 DUMPREG(VP_SRC_V_POSITION);
222 DUMPREG(VP_SRC_WIDTH);
223 DUMPREG(VP_SRC_HEIGHT);
224 DUMPREG(VP_DST_H_POSITION);
225 DUMPREG(VP_DST_V_POSITION);
226 DUMPREG(VP_DST_WIDTH);
227 DUMPREG(VP_DST_HEIGHT);
234 static inline void vp_filter_set(struct mixer_resources *res,
235 int reg_id, const u8 *data, unsigned int size)
237 /* assure 4-byte align */
239 for (; size; size -= 4, reg_id += 4, data += 4) {
240 u32 val = (data[0] << 24) | (data[1] << 16) |
241 (data[2] << 8) | data[3];
242 vp_reg_write(res, reg_id, val);
246 static void vp_default_filter(struct mixer_resources *res)
248 vp_filter_set(res, VP_POLY8_Y0_LL,
249 filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
250 vp_filter_set(res, VP_POLY4_Y0_LL,
251 filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
252 vp_filter_set(res, VP_POLY4_C0_LL,
253 filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
256 static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
258 struct mixer_resources *res = &ctx->mixer_res;
260 /* block update on vsync */
261 mixer_reg_writemask(res, MXR_STATUS, enable ?
262 MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
265 vp_reg_write(res, VP_SHADOW_UPDATE, enable ?
266 VP_SHADOW_UPDATE_ENABLE : 0);
269 static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height)
271 struct mixer_resources *res = &ctx->mixer_res;
274 /* choosing between interlace and progressive mode */
275 val = (ctx->interlace ? MXR_CFG_SCAN_INTERLACE :
276 MXR_CFG_SCAN_PROGRESSIVE);
278 if (ctx->mxr_ver != MXR_VER_128_0_0_184) {
279 /* choosing between proper HD and SD mode */
281 val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
282 else if (height <= 576)
283 val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
284 else if (height <= 720)
285 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
286 else if (height <= 1080)
287 val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
289 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
292 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK);
295 static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
297 struct mixer_resources *res = &ctx->mixer_res;
301 val = MXR_CFG_RGB601_0_255;
302 } else if (height == 576) {
303 val = MXR_CFG_RGB601_0_255;
304 } else if (height == 720) {
305 val = MXR_CFG_RGB709_16_235;
306 mixer_reg_write(res, MXR_CM_COEFF_Y,
307 (1 << 30) | (94 << 20) | (314 << 10) |
309 mixer_reg_write(res, MXR_CM_COEFF_CB,
310 (972 << 20) | (851 << 10) | (225 << 0));
311 mixer_reg_write(res, MXR_CM_COEFF_CR,
312 (225 << 20) | (820 << 10) | (1004 << 0));
313 } else if (height == 1080) {
314 val = MXR_CFG_RGB709_16_235;
315 mixer_reg_write(res, MXR_CM_COEFF_Y,
316 (1 << 30) | (94 << 20) | (314 << 10) |
318 mixer_reg_write(res, MXR_CM_COEFF_CB,
319 (972 << 20) | (851 << 10) | (225 << 0));
320 mixer_reg_write(res, MXR_CM_COEFF_CR,
321 (225 << 20) | (820 << 10) | (1004 << 0));
323 val = MXR_CFG_RGB709_16_235;
324 mixer_reg_write(res, MXR_CM_COEFF_Y,
325 (1 << 30) | (94 << 20) | (314 << 10) |
327 mixer_reg_write(res, MXR_CM_COEFF_CB,
328 (972 << 20) | (851 << 10) | (225 << 0));
329 mixer_reg_write(res, MXR_CM_COEFF_CR,
330 (225 << 20) | (820 << 10) | (1004 << 0));
333 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
336 static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
339 struct mixer_resources *res = &ctx->mixer_res;
340 u32 val = enable ? ~0 : 0;
344 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
347 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
350 if (ctx->vp_enabled) {
351 vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
352 mixer_reg_writemask(res, MXR_CFG, val,
355 /* control blending of graphic layer 0 */
356 mixer_reg_writemask(res, MXR_GRAPHIC_CFG(0), val,
357 MXR_GRP_CFG_BLEND_PRE_MUL |
358 MXR_GRP_CFG_PIXEL_BLEND_EN);
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);
371 static void mixer_stop(struct mixer_context *ctx)
373 struct mixer_resources *res = &ctx->mixer_res;
376 mixer_reg_writemask(res, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
378 while (!(mixer_reg_read(res, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
380 usleep_range(10000, 12000);
383 static void vp_video_buffer(struct mixer_context *ctx, unsigned int win)
385 struct mixer_resources *res = &ctx->mixer_res;
387 struct exynos_drm_plane *plane;
388 dma_addr_t luma_addr[2], chroma_addr[2];
389 bool tiled_mode = false;
390 bool crcb_mode = false;
393 plane = &ctx->planes[win];
395 switch (plane->pixel_format) {
396 case DRM_FORMAT_NV12:
399 case DRM_FORMAT_NV21:
403 DRM_ERROR("pixel format for vp is wrong [%d].\n",
404 plane->pixel_format);
408 luma_addr[0] = plane->dma_addr[0];
409 chroma_addr[0] = plane->dma_addr[1];
411 if (plane->scan_flag & DRM_MODE_FLAG_INTERLACE) {
412 ctx->interlace = true;
414 luma_addr[1] = luma_addr[0] + 0x40;
415 chroma_addr[1] = chroma_addr[0] + 0x40;
417 luma_addr[1] = luma_addr[0] + plane->pitch;
418 chroma_addr[1] = chroma_addr[0] + plane->pitch;
421 ctx->interlace = false;
426 spin_lock_irqsave(&res->reg_slock, flags);
427 mixer_vsync_set_update(ctx, false);
429 /* interlace or progressive scan mode */
430 val = (ctx->interlace ? ~0 : 0);
431 vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP);
434 val = (crcb_mode ? VP_MODE_NV21 : VP_MODE_NV12);
435 val |= (tiled_mode ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
436 vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK);
438 /* setting size of input image */
439 vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(plane->pitch) |
440 VP_IMG_VSIZE(plane->fb_height));
441 /* chroma height has to reduced by 2 to avoid chroma distorions */
442 vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(plane->pitch) |
443 VP_IMG_VSIZE(plane->fb_height / 2));
445 vp_reg_write(res, VP_SRC_WIDTH, plane->src_width);
446 vp_reg_write(res, VP_SRC_HEIGHT, plane->src_height);
447 vp_reg_write(res, VP_SRC_H_POSITION,
448 VP_SRC_H_POSITION_VAL(plane->src_x));
449 vp_reg_write(res, VP_SRC_V_POSITION, plane->src_y);
451 vp_reg_write(res, VP_DST_WIDTH, plane->crtc_width);
452 vp_reg_write(res, VP_DST_H_POSITION, plane->crtc_x);
453 if (ctx->interlace) {
454 vp_reg_write(res, VP_DST_HEIGHT, plane->crtc_height / 2);
455 vp_reg_write(res, VP_DST_V_POSITION, plane->crtc_y / 2);
457 vp_reg_write(res, VP_DST_HEIGHT, plane->crtc_height);
458 vp_reg_write(res, VP_DST_V_POSITION, plane->crtc_y);
461 vp_reg_write(res, VP_H_RATIO, plane->h_ratio);
462 vp_reg_write(res, VP_V_RATIO, plane->v_ratio);
464 vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
466 /* set buffer address to vp */
467 vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]);
468 vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]);
469 vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]);
470 vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]);
472 mixer_cfg_scan(ctx, plane->mode_height);
473 mixer_cfg_rgb_fmt(ctx, plane->mode_height);
474 mixer_cfg_layer(ctx, win, true);
477 mixer_vsync_set_update(ctx, true);
478 spin_unlock_irqrestore(&res->reg_slock, flags);
480 mixer_regs_dump(ctx);
484 static void mixer_layer_update(struct mixer_context *ctx)
486 struct mixer_resources *res = &ctx->mixer_res;
488 mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
491 static int mixer_setup_scale(const struct exynos_drm_plane *plane,
492 unsigned int *x_ratio, unsigned int *y_ratio)
494 if (plane->crtc_width != plane->src_width) {
495 if (plane->crtc_width == 2 * plane->src_width)
501 if (plane->crtc_height != plane->src_height) {
502 if (plane->crtc_height == 2 * plane->src_height)
511 DRM_DEBUG_KMS("only 2x width/height scaling of plane supported\n");
515 static void mixer_graph_buffer(struct mixer_context *ctx, unsigned int win)
517 struct mixer_resources *res = &ctx->mixer_res;
519 struct exynos_drm_plane *plane;
520 unsigned int x_ratio = 0, y_ratio = 0;
521 unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
526 plane = &ctx->planes[win];
528 switch (plane->pixel_format) {
529 case DRM_FORMAT_XRGB4444:
530 fmt = MXR_FORMAT_ARGB4444;
533 case DRM_FORMAT_XRGB1555:
534 fmt = MXR_FORMAT_ARGB1555;
537 case DRM_FORMAT_RGB565:
538 fmt = MXR_FORMAT_RGB565;
541 case DRM_FORMAT_XRGB8888:
542 case DRM_FORMAT_ARGB8888:
543 fmt = MXR_FORMAT_ARGB8888;
547 DRM_DEBUG_KMS("pixelformat unsupported by mixer\n");
551 /* check if mixer supports requested scaling setup */
552 if (mixer_setup_scale(plane, &x_ratio, &y_ratio))
555 dst_x_offset = plane->crtc_x;
556 dst_y_offset = plane->crtc_y;
558 /* converting dma address base and source offset */
559 dma_addr = plane->dma_addr[0]
560 + (plane->src_x * plane->bpp >> 3)
561 + (plane->src_y * plane->pitch);
565 if (plane->scan_flag & DRM_MODE_FLAG_INTERLACE)
566 ctx->interlace = true;
568 ctx->interlace = false;
570 spin_lock_irqsave(&res->reg_slock, flags);
571 mixer_vsync_set_update(ctx, false);
574 mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
575 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
578 mixer_reg_write(res, MXR_GRAPHIC_SPAN(win),
579 plane->pitch / (plane->bpp >> 3));
581 /* setup display size */
582 if (ctx->mxr_ver == MXR_VER_128_0_0_184 &&
583 win == MIXER_DEFAULT_WIN) {
584 val = MXR_MXR_RES_HEIGHT(plane->mode_height);
585 val |= MXR_MXR_RES_WIDTH(plane->mode_width);
586 mixer_reg_write(res, MXR_RESOLUTION, val);
589 val = MXR_GRP_WH_WIDTH(plane->src_width);
590 val |= MXR_GRP_WH_HEIGHT(plane->src_height);
591 val |= MXR_GRP_WH_H_SCALE(x_ratio);
592 val |= MXR_GRP_WH_V_SCALE(y_ratio);
593 mixer_reg_write(res, MXR_GRAPHIC_WH(win), val);
595 /* setup offsets in source image */
596 val = MXR_GRP_SXY_SX(src_x_offset);
597 val |= MXR_GRP_SXY_SY(src_y_offset);
598 mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val);
600 /* setup offsets in display image */
601 val = MXR_GRP_DXY_DX(dst_x_offset);
602 val |= MXR_GRP_DXY_DY(dst_y_offset);
603 mixer_reg_write(res, MXR_GRAPHIC_DXY(win), val);
605 /* set buffer address to mixer */
606 mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr);
608 mixer_cfg_scan(ctx, plane->mode_height);
609 mixer_cfg_rgb_fmt(ctx, plane->mode_height);
610 mixer_cfg_layer(ctx, win, true);
612 /* layer update mandatory for mixer 16.0.33.0 */
613 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
614 ctx->mxr_ver == MXR_VER_128_0_0_184)
615 mixer_layer_update(ctx);
619 mixer_vsync_set_update(ctx, true);
620 spin_unlock_irqrestore(&res->reg_slock, flags);
622 mixer_regs_dump(ctx);
625 static void vp_win_reset(struct mixer_context *ctx)
627 struct mixer_resources *res = &ctx->mixer_res;
630 vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING);
631 for (tries = 100; tries; --tries) {
632 /* waiting until VP_SRESET_PROCESSING is 0 */
633 if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING)
635 usleep_range(10000, 12000);
637 WARN(tries == 0, "failed to reset Video Processor\n");
640 static void mixer_win_reset(struct mixer_context *ctx)
642 struct mixer_resources *res = &ctx->mixer_res;
644 u32 val; /* value stored to register */
646 spin_lock_irqsave(&res->reg_slock, flags);
647 mixer_vsync_set_update(ctx, false);
649 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
651 /* set output in RGB888 mode */
652 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
654 /* 16 beat burst in DMA */
655 mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
656 MXR_STATUS_BURST_MASK);
658 /* setting default layer priority: layer1 > layer0 > video
659 * because typical usage scenario would be
661 * layer0 - framebuffer
662 * video - video overlay
664 val = MXR_LAYER_CFG_GRP1_VAL(3);
665 val |= MXR_LAYER_CFG_GRP0_VAL(2);
667 val |= MXR_LAYER_CFG_VP_VAL(1);
668 mixer_reg_write(res, MXR_LAYER_CFG, val);
670 /* setting background color */
671 mixer_reg_write(res, MXR_BG_COLOR0, 0x008080);
672 mixer_reg_write(res, MXR_BG_COLOR1, 0x008080);
673 mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
675 /* setting graphical layers */
676 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
677 val |= MXR_GRP_CFG_WIN_BLEND_EN;
678 val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */
680 /* Don't blend layer 0 onto the mixer background */
681 mixer_reg_write(res, MXR_GRAPHIC_CFG(0), val);
683 /* Blend layer 1 into layer 0 */
684 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
685 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
686 mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val);
688 /* setting video layers */
689 val = MXR_GRP_CFG_ALPHA_VAL(0);
690 mixer_reg_write(res, MXR_VIDEO_CFG, val);
692 if (ctx->vp_enabled) {
693 /* configuration of Video Processor Registers */
695 vp_default_filter(res);
698 /* disable all layers */
699 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
700 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
702 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
704 mixer_vsync_set_update(ctx, true);
705 spin_unlock_irqrestore(&res->reg_slock, flags);
708 static irqreturn_t mixer_irq_handler(int irq, void *arg)
710 struct mixer_context *ctx = arg;
711 struct mixer_resources *res = &ctx->mixer_res;
712 u32 val, base, shadow;
714 spin_lock(&res->reg_slock);
716 /* read interrupt status for handling and clearing flags for VSYNC */
717 val = mixer_reg_read(res, MXR_INT_STATUS);
720 if (val & MXR_INT_STATUS_VSYNC) {
721 /* interlace scan need to check shadow register */
722 if (ctx->interlace) {
723 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0));
724 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0));
728 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(1));
729 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1));
734 drm_handle_vblank(ctx->drm_dev, ctx->pipe);
735 exynos_drm_crtc_finish_pageflip(ctx->drm_dev, ctx->pipe);
737 /* set wait vsync event to zero and wake up queue. */
738 if (atomic_read(&ctx->wait_vsync_event)) {
739 atomic_set(&ctx->wait_vsync_event, 0);
740 wake_up(&ctx->wait_vsync_queue);
745 /* clear interrupts */
746 if (~val & MXR_INT_EN_VSYNC) {
747 /* vsync interrupt use different bit for read and clear */
748 val &= ~MXR_INT_EN_VSYNC;
749 val |= MXR_INT_CLEAR_VSYNC;
751 mixer_reg_write(res, MXR_INT_STATUS, val);
753 spin_unlock(&res->reg_slock);
758 static int mixer_resources_init(struct mixer_context *mixer_ctx)
760 struct device *dev = &mixer_ctx->pdev->dev;
761 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
762 struct resource *res;
765 spin_lock_init(&mixer_res->reg_slock);
767 mixer_res->mixer = devm_clk_get(dev, "mixer");
768 if (IS_ERR(mixer_res->mixer)) {
769 dev_err(dev, "failed to get clock 'mixer'\n");
773 mixer_res->hdmi = devm_clk_get(dev, "hdmi");
774 if (IS_ERR(mixer_res->hdmi)) {
775 dev_err(dev, "failed to get clock 'hdmi'\n");
776 return PTR_ERR(mixer_res->hdmi);
779 mixer_res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
780 if (IS_ERR(mixer_res->sclk_hdmi)) {
781 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
784 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
786 dev_err(dev, "get memory resource failed.\n");
790 mixer_res->mixer_regs = devm_ioremap(dev, res->start,
792 if (mixer_res->mixer_regs == NULL) {
793 dev_err(dev, "register mapping failed.\n");
797 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0);
799 dev_err(dev, "get interrupt resource failed.\n");
803 ret = devm_request_irq(dev, res->start, mixer_irq_handler,
804 0, "drm_mixer", mixer_ctx);
806 dev_err(dev, "request interrupt failed.\n");
809 mixer_res->irq = res->start;
814 static int vp_resources_init(struct mixer_context *mixer_ctx)
816 struct device *dev = &mixer_ctx->pdev->dev;
817 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
818 struct resource *res;
820 mixer_res->vp = devm_clk_get(dev, "vp");
821 if (IS_ERR(mixer_res->vp)) {
822 dev_err(dev, "failed to get clock 'vp'\n");
826 if (mixer_ctx->has_sclk) {
827 mixer_res->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
828 if (IS_ERR(mixer_res->sclk_mixer)) {
829 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
832 mixer_res->mout_mixer = devm_clk_get(dev, "mout_mixer");
833 if (IS_ERR(mixer_res->mout_mixer)) {
834 dev_err(dev, "failed to get clock 'mout_mixer'\n");
838 if (mixer_res->sclk_hdmi && mixer_res->mout_mixer)
839 clk_set_parent(mixer_res->mout_mixer,
840 mixer_res->sclk_hdmi);
843 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
845 dev_err(dev, "get memory resource failed.\n");
849 mixer_res->vp_regs = devm_ioremap(dev, res->start,
851 if (mixer_res->vp_regs == NULL) {
852 dev_err(dev, "register mapping failed.\n");
859 static int mixer_initialize(struct mixer_context *mixer_ctx,
860 struct drm_device *drm_dev)
863 struct exynos_drm_private *priv;
864 priv = drm_dev->dev_private;
866 mixer_ctx->drm_dev = drm_dev;
867 mixer_ctx->pipe = priv->pipe++;
869 /* acquire resources: regs, irqs, clocks */
870 ret = mixer_resources_init(mixer_ctx);
872 DRM_ERROR("mixer_resources_init failed ret=%d\n", ret);
876 if (mixer_ctx->vp_enabled) {
877 /* acquire vp resources: regs, irqs, clocks */
878 ret = vp_resources_init(mixer_ctx);
880 DRM_ERROR("vp_resources_init failed ret=%d\n", ret);
885 ret = drm_iommu_attach_device_if_possible(mixer_ctx->crtc, drm_dev,
893 static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
895 if (is_drm_iommu_supported(mixer_ctx->drm_dev))
896 drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev);
899 static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
901 struct mixer_context *mixer_ctx = crtc->ctx;
902 struct mixer_resources *res = &mixer_ctx->mixer_res;
904 if (!mixer_ctx->powered) {
905 mixer_ctx->int_en |= MXR_INT_EN_VSYNC;
909 /* enable vsync interrupt */
910 mixer_reg_writemask(res, MXR_INT_EN, MXR_INT_EN_VSYNC,
916 static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
918 struct mixer_context *mixer_ctx = crtc->ctx;
919 struct mixer_resources *res = &mixer_ctx->mixer_res;
921 /* disable vsync interrupt */
922 mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
925 static void mixer_win_commit(struct exynos_drm_crtc *crtc, unsigned int win)
927 struct mixer_context *mixer_ctx = crtc->ctx;
929 DRM_DEBUG_KMS("win: %d\n", win);
931 mutex_lock(&mixer_ctx->mixer_mutex);
932 if (!mixer_ctx->powered) {
933 mutex_unlock(&mixer_ctx->mixer_mutex);
936 mutex_unlock(&mixer_ctx->mixer_mutex);
938 if (win > 1 && mixer_ctx->vp_enabled)
939 vp_video_buffer(mixer_ctx, win);
941 mixer_graph_buffer(mixer_ctx, win);
944 static void mixer_win_disable(struct exynos_drm_crtc *crtc, unsigned int win)
946 struct mixer_context *mixer_ctx = crtc->ctx;
947 struct mixer_resources *res = &mixer_ctx->mixer_res;
950 DRM_DEBUG_KMS("win: %d\n", win);
952 mutex_lock(&mixer_ctx->mixer_mutex);
953 if (!mixer_ctx->powered) {
954 mutex_unlock(&mixer_ctx->mixer_mutex);
957 mutex_unlock(&mixer_ctx->mixer_mutex);
959 spin_lock_irqsave(&res->reg_slock, flags);
960 mixer_vsync_set_update(mixer_ctx, false);
962 mixer_cfg_layer(mixer_ctx, win, false);
964 mixer_vsync_set_update(mixer_ctx, true);
965 spin_unlock_irqrestore(&res->reg_slock, flags);
968 static void mixer_wait_for_vblank(struct exynos_drm_crtc *crtc)
970 struct mixer_context *mixer_ctx = crtc->ctx;
973 mutex_lock(&mixer_ctx->mixer_mutex);
974 if (!mixer_ctx->powered) {
975 mutex_unlock(&mixer_ctx->mixer_mutex);
978 mutex_unlock(&mixer_ctx->mixer_mutex);
980 err = drm_vblank_get(mixer_ctx->drm_dev, mixer_ctx->pipe);
982 DRM_DEBUG_KMS("failed to acquire vblank counter\n");
986 atomic_set(&mixer_ctx->wait_vsync_event, 1);
989 * wait for MIXER to signal VSYNC interrupt or return after
990 * timeout which is set to 50ms (refresh rate of 20).
992 if (!wait_event_timeout(mixer_ctx->wait_vsync_queue,
993 !atomic_read(&mixer_ctx->wait_vsync_event),
995 DRM_DEBUG_KMS("vblank wait timed out.\n");
997 drm_vblank_put(mixer_ctx->drm_dev, mixer_ctx->pipe);
1000 static void mixer_enable(struct exynos_drm_crtc *crtc)
1002 struct mixer_context *ctx = crtc->ctx;
1003 struct mixer_resources *res = &ctx->mixer_res;
1006 mutex_lock(&ctx->mixer_mutex);
1008 mutex_unlock(&ctx->mixer_mutex);
1012 mutex_unlock(&ctx->mixer_mutex);
1014 pm_runtime_get_sync(ctx->dev);
1016 ret = clk_prepare_enable(res->mixer);
1018 DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret);
1021 ret = clk_prepare_enable(res->hdmi);
1023 DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret);
1026 if (ctx->vp_enabled) {
1027 ret = clk_prepare_enable(res->vp);
1029 DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n",
1033 if (ctx->has_sclk) {
1034 ret = clk_prepare_enable(res->sclk_mixer);
1036 DRM_ERROR("Failed to prepare_enable the " \
1037 "sclk_mixer clk [%d]\n",
1044 mutex_lock(&ctx->mixer_mutex);
1045 ctx->powered = true;
1046 mutex_unlock(&ctx->mixer_mutex);
1048 mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
1050 mixer_reg_write(res, MXR_INT_EN, ctx->int_en);
1051 mixer_win_reset(ctx);
1054 static void mixer_disable(struct exynos_drm_crtc *crtc)
1056 struct mixer_context *ctx = crtc->ctx;
1057 struct mixer_resources *res = &ctx->mixer_res;
1060 mutex_lock(&ctx->mixer_mutex);
1061 if (!ctx->powered) {
1062 mutex_unlock(&ctx->mixer_mutex);
1065 mutex_unlock(&ctx->mixer_mutex);
1068 mixer_regs_dump(ctx);
1070 for (i = 0; i < MIXER_WIN_NR; i++)
1071 mixer_win_disable(crtc, i);
1073 ctx->int_en = mixer_reg_read(res, MXR_INT_EN);
1075 mutex_lock(&ctx->mixer_mutex);
1076 ctx->powered = false;
1077 mutex_unlock(&ctx->mixer_mutex);
1079 clk_disable_unprepare(res->hdmi);
1080 clk_disable_unprepare(res->mixer);
1081 if (ctx->vp_enabled) {
1082 clk_disable_unprepare(res->vp);
1084 clk_disable_unprepare(res->sclk_mixer);
1087 pm_runtime_put_sync(ctx->dev);
1090 /* Only valid for Mixer version 16.0.33.0 */
1091 int mixer_check_mode(struct drm_display_mode *mode)
1098 DRM_DEBUG_KMS("xres=%d, yres=%d, refresh=%d, intl=%d\n",
1099 mode->hdisplay, mode->vdisplay, mode->vrefresh,
1100 (mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0);
1102 if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1103 (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1104 (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1110 static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1111 .enable = mixer_enable,
1112 .disable = mixer_disable,
1113 .enable_vblank = mixer_enable_vblank,
1114 .disable_vblank = mixer_disable_vblank,
1115 .wait_for_vblank = mixer_wait_for_vblank,
1116 .win_commit = mixer_win_commit,
1117 .win_disable = mixer_win_disable,
1120 static struct mixer_drv_data exynos5420_mxr_drv_data = {
1121 .version = MXR_VER_128_0_0_184,
1125 static struct mixer_drv_data exynos5250_mxr_drv_data = {
1126 .version = MXR_VER_16_0_33_0,
1130 static struct mixer_drv_data exynos4212_mxr_drv_data = {
1131 .version = MXR_VER_0_0_0_16,
1135 static struct mixer_drv_data exynos4210_mxr_drv_data = {
1136 .version = MXR_VER_0_0_0_16,
1141 static const struct platform_device_id mixer_driver_types[] = {
1143 .name = "s5p-mixer",
1144 .driver_data = (unsigned long)&exynos4210_mxr_drv_data,
1146 .name = "exynos5-mixer",
1147 .driver_data = (unsigned long)&exynos5250_mxr_drv_data,
1153 static struct of_device_id mixer_match_types[] = {
1155 .compatible = "samsung,exynos4210-mixer",
1156 .data = &exynos4210_mxr_drv_data,
1158 .compatible = "samsung,exynos4212-mixer",
1159 .data = &exynos4212_mxr_drv_data,
1161 .compatible = "samsung,exynos5-mixer",
1162 .data = &exynos5250_mxr_drv_data,
1164 .compatible = "samsung,exynos5250-mixer",
1165 .data = &exynos5250_mxr_drv_data,
1167 .compatible = "samsung,exynos5420-mixer",
1168 .data = &exynos5420_mxr_drv_data,
1173 MODULE_DEVICE_TABLE(of, mixer_match_types);
1175 static int mixer_bind(struct device *dev, struct device *manager, void *data)
1177 struct mixer_context *ctx = dev_get_drvdata(dev);
1178 struct drm_device *drm_dev = data;
1179 struct exynos_drm_plane *exynos_plane;
1180 enum drm_plane_type type;
1184 ret = mixer_initialize(ctx, drm_dev);
1188 for (zpos = 0; zpos < MIXER_WIN_NR; zpos++) {
1189 type = (zpos == MIXER_DEFAULT_WIN) ? DRM_PLANE_TYPE_PRIMARY :
1190 DRM_PLANE_TYPE_OVERLAY;
1191 ret = exynos_plane_init(drm_dev, &ctx->planes[zpos],
1192 1 << ctx->pipe, type, zpos);
1197 exynos_plane = &ctx->planes[MIXER_DEFAULT_WIN];
1198 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1199 ctx->pipe, EXYNOS_DISPLAY_TYPE_HDMI,
1200 &mixer_crtc_ops, ctx);
1201 if (IS_ERR(ctx->crtc)) {
1202 mixer_ctx_remove(ctx);
1203 ret = PTR_ERR(ctx->crtc);
1210 devm_kfree(dev, ctx);
1214 static void mixer_unbind(struct device *dev, struct device *master, void *data)
1216 struct mixer_context *ctx = dev_get_drvdata(dev);
1218 mixer_ctx_remove(ctx);
1221 static const struct component_ops mixer_component_ops = {
1223 .unbind = mixer_unbind,
1226 static int mixer_probe(struct platform_device *pdev)
1228 struct device *dev = &pdev->dev;
1229 struct mixer_drv_data *drv;
1230 struct mixer_context *ctx;
1233 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1235 DRM_ERROR("failed to alloc mixer context.\n");
1239 mutex_init(&ctx->mixer_mutex);
1242 const struct of_device_id *match;
1244 match = of_match_node(mixer_match_types, dev->of_node);
1245 drv = (struct mixer_drv_data *)match->data;
1247 drv = (struct mixer_drv_data *)
1248 platform_get_device_id(pdev)->driver_data;
1253 ctx->vp_enabled = drv->is_vp_enabled;
1254 ctx->has_sclk = drv->has_sclk;
1255 ctx->mxr_ver = drv->version;
1256 init_waitqueue_head(&ctx->wait_vsync_queue);
1257 atomic_set(&ctx->wait_vsync_event, 0);
1259 platform_set_drvdata(pdev, ctx);
1261 ret = component_add(&pdev->dev, &mixer_component_ops);
1263 pm_runtime_enable(dev);
1268 static int mixer_remove(struct platform_device *pdev)
1270 pm_runtime_disable(&pdev->dev);
1272 component_del(&pdev->dev, &mixer_component_ops);
1277 struct platform_driver mixer_driver = {
1279 .name = "exynos-mixer",
1280 .owner = THIS_MODULE,
1281 .of_match_table = mixer_match_types,
1283 .probe = mixer_probe,
1284 .remove = mixer_remove,
1285 .id_table = mixer_driver_types,