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/of_device.h>
35 #include <linux/component.h>
37 #include <drm/exynos_drm.h>
39 #include "exynos_drm_drv.h"
40 #include "exynos_drm_crtc.h"
41 #include "exynos_drm_fb.h"
42 #include "exynos_drm_plane.h"
43 #include "exynos_drm_iommu.h"
45 #define MIXER_WIN_NR 3
46 #define VP_DEFAULT_WIN 2
49 * Mixer color space conversion coefficient triplet.
50 * Used for CSC from RGB to YCbCr.
51 * Each coefficient is a 10-bit fixed point number with
52 * sign and no integer part, i.e.
53 * [0:8] = fractional part (representing a value y = x / 2^9)
55 * Negative values are encoded with two's complement.
57 #define MXR_CSC_C(x) ((int)((x) * 512.0) & 0x3ff)
58 #define MXR_CSC_CT(a0, a1, a2) \
59 ((MXR_CSC_C(a0) << 20) | (MXR_CSC_C(a1) << 10) | (MXR_CSC_C(a2) << 0))
61 /* YCbCr value, used for mixer background color configuration. */
62 #define MXR_YCBCR_VAL(y, cb, cr) (((y) << 16) | ((cb) << 8) | ((cr) << 0))
64 /* The pixelformats that are natively supported by the mixer. */
65 #define MXR_FORMAT_RGB565 4
66 #define MXR_FORMAT_ARGB1555 5
67 #define MXR_FORMAT_ARGB4444 6
68 #define MXR_FORMAT_ARGB8888 7
70 enum mixer_version_id {
76 enum mixer_flag_bits {
84 static const uint32_t mixer_formats[] = {
94 static const uint32_t vp_formats[] = {
99 struct mixer_context {
100 struct platform_device *pdev;
102 struct drm_device *drm_dev;
103 struct exynos_drm_crtc *crtc;
104 struct exynos_drm_plane planes[MIXER_WIN_NR];
108 void __iomem *mixer_regs;
109 void __iomem *vp_regs;
110 spinlock_t reg_slock;
114 struct clk *sclk_mixer;
115 struct clk *sclk_hdmi;
116 struct clk *mout_mixer;
117 enum mixer_version_id mxr_ver;
121 struct mixer_drv_data {
122 enum mixer_version_id version;
127 static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
130 .type = DRM_PLANE_TYPE_PRIMARY,
131 .pixel_formats = mixer_formats,
132 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
133 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
134 EXYNOS_DRM_PLANE_CAP_ZPOS,
137 .type = DRM_PLANE_TYPE_CURSOR,
138 .pixel_formats = mixer_formats,
139 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
140 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
141 EXYNOS_DRM_PLANE_CAP_ZPOS,
144 .type = DRM_PLANE_TYPE_OVERLAY,
145 .pixel_formats = vp_formats,
146 .num_pixel_formats = ARRAY_SIZE(vp_formats),
147 .capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
148 EXYNOS_DRM_PLANE_CAP_ZPOS |
149 EXYNOS_DRM_PLANE_CAP_TILE,
153 static const u8 filter_y_horiz_tap8[] = {
154 0, -1, -1, -1, -1, -1, -1, -1,
155 -1, -1, -1, -1, -1, 0, 0, 0,
156 0, 2, 4, 5, 6, 6, 6, 6,
157 6, 5, 5, 4, 3, 2, 1, 1,
158 0, -6, -12, -16, -18, -20, -21, -20,
159 -20, -18, -16, -13, -10, -8, -5, -2,
160 127, 126, 125, 121, 114, 107, 99, 89,
161 79, 68, 57, 46, 35, 25, 16, 8,
164 static const u8 filter_y_vert_tap4[] = {
165 0, -3, -6, -8, -8, -8, -8, -7,
166 -6, -5, -4, -3, -2, -1, -1, 0,
167 127, 126, 124, 118, 111, 102, 92, 81,
168 70, 59, 48, 37, 27, 19, 11, 5,
169 0, 5, 11, 19, 27, 37, 48, 59,
170 70, 81, 92, 102, 111, 118, 124, 126,
171 0, 0, -1, -1, -2, -3, -4, -5,
172 -6, -7, -8, -8, -8, -8, -6, -3,
175 static const u8 filter_cr_horiz_tap4[] = {
176 0, -3, -6, -8, -8, -8, -8, -7,
177 -6, -5, -4, -3, -2, -1, -1, 0,
178 127, 126, 124, 118, 111, 102, 92, 81,
179 70, 59, 48, 37, 27, 19, 11, 5,
182 static inline u32 vp_reg_read(struct mixer_context *ctx, u32 reg_id)
184 return readl(ctx->vp_regs + reg_id);
187 static inline void vp_reg_write(struct mixer_context *ctx, u32 reg_id,
190 writel(val, ctx->vp_regs + reg_id);
193 static inline void vp_reg_writemask(struct mixer_context *ctx, u32 reg_id,
196 u32 old = vp_reg_read(ctx, reg_id);
198 val = (val & mask) | (old & ~mask);
199 writel(val, ctx->vp_regs + reg_id);
202 static inline u32 mixer_reg_read(struct mixer_context *ctx, u32 reg_id)
204 return readl(ctx->mixer_regs + reg_id);
207 static inline void mixer_reg_write(struct mixer_context *ctx, u32 reg_id,
210 writel(val, ctx->mixer_regs + reg_id);
213 static inline void mixer_reg_writemask(struct mixer_context *ctx,
214 u32 reg_id, u32 val, u32 mask)
216 u32 old = mixer_reg_read(ctx, reg_id);
218 val = (val & mask) | (old & ~mask);
219 writel(val, ctx->mixer_regs + reg_id);
222 static void mixer_regs_dump(struct mixer_context *ctx)
224 #define DUMPREG(reg_id) \
226 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
227 (u32)readl(ctx->mixer_regs + reg_id)); \
233 DUMPREG(MXR_INT_STATUS);
235 DUMPREG(MXR_LAYER_CFG);
236 DUMPREG(MXR_VIDEO_CFG);
238 DUMPREG(MXR_GRAPHIC0_CFG);
239 DUMPREG(MXR_GRAPHIC0_BASE);
240 DUMPREG(MXR_GRAPHIC0_SPAN);
241 DUMPREG(MXR_GRAPHIC0_WH);
242 DUMPREG(MXR_GRAPHIC0_SXY);
243 DUMPREG(MXR_GRAPHIC0_DXY);
245 DUMPREG(MXR_GRAPHIC1_CFG);
246 DUMPREG(MXR_GRAPHIC1_BASE);
247 DUMPREG(MXR_GRAPHIC1_SPAN);
248 DUMPREG(MXR_GRAPHIC1_WH);
249 DUMPREG(MXR_GRAPHIC1_SXY);
250 DUMPREG(MXR_GRAPHIC1_DXY);
254 static void vp_regs_dump(struct mixer_context *ctx)
256 #define DUMPREG(reg_id) \
258 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
259 (u32) readl(ctx->vp_regs + reg_id)); \
264 DUMPREG(VP_SHADOW_UPDATE);
265 DUMPREG(VP_FIELD_ID);
267 DUMPREG(VP_IMG_SIZE_Y);
268 DUMPREG(VP_IMG_SIZE_C);
269 DUMPREG(VP_PER_RATE_CTRL);
270 DUMPREG(VP_TOP_Y_PTR);
271 DUMPREG(VP_BOT_Y_PTR);
272 DUMPREG(VP_TOP_C_PTR);
273 DUMPREG(VP_BOT_C_PTR);
274 DUMPREG(VP_ENDIAN_MODE);
275 DUMPREG(VP_SRC_H_POSITION);
276 DUMPREG(VP_SRC_V_POSITION);
277 DUMPREG(VP_SRC_WIDTH);
278 DUMPREG(VP_SRC_HEIGHT);
279 DUMPREG(VP_DST_H_POSITION);
280 DUMPREG(VP_DST_V_POSITION);
281 DUMPREG(VP_DST_WIDTH);
282 DUMPREG(VP_DST_HEIGHT);
289 static inline void vp_filter_set(struct mixer_context *ctx,
290 int reg_id, const u8 *data, unsigned int size)
292 /* assure 4-byte align */
294 for (; size; size -= 4, reg_id += 4, data += 4) {
295 u32 val = (data[0] << 24) | (data[1] << 16) |
296 (data[2] << 8) | data[3];
297 vp_reg_write(ctx, reg_id, val);
301 static void vp_default_filter(struct mixer_context *ctx)
303 vp_filter_set(ctx, VP_POLY8_Y0_LL,
304 filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
305 vp_filter_set(ctx, VP_POLY4_Y0_LL,
306 filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
307 vp_filter_set(ctx, VP_POLY4_C0_LL,
308 filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
311 static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
316 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
318 /* blending based on pixel alpha */
319 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
320 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
322 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
323 val, MXR_GRP_CFG_MISC_MASK);
326 static void mixer_cfg_vp_blend(struct mixer_context *ctx)
331 * No blending at the moment since the NV12/NV21 pixelformats don't
332 * have an alpha channel. However the mixer supports a global alpha
333 * value for a layer. Once this functionality is exposed, we can
334 * support blending of the video layer through this.
337 mixer_reg_write(ctx, MXR_VIDEO_CFG, val);
340 static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
342 /* block update on vsync */
343 mixer_reg_writemask(ctx, MXR_STATUS, enable ?
344 MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
346 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
347 vp_reg_write(ctx, VP_SHADOW_UPDATE, enable ?
348 VP_SHADOW_UPDATE_ENABLE : 0);
351 static void mixer_cfg_scan(struct mixer_context *ctx, int width, int height)
355 /* choosing between interlace and progressive mode */
356 val = test_bit(MXR_BIT_INTERLACE, &ctx->flags) ?
357 MXR_CFG_SCAN_INTERLACE : MXR_CFG_SCAN_PROGRESSIVE;
359 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
360 mixer_reg_write(ctx, MXR_RESOLUTION,
361 MXR_MXR_RES_HEIGHT(height) | MXR_MXR_RES_WIDTH(width));
363 val |= ctx->scan_value;
365 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_SCAN_MASK);
368 static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
375 val = MXR_CFG_RGB601_0_255;
380 val = MXR_CFG_RGB709_16_235;
381 /* Configure the BT.709 CSC matrix for full range RGB. */
382 mixer_reg_write(ctx, MXR_CM_COEFF_Y,
383 MXR_CSC_CT( 0.184, 0.614, 0.063) |
384 MXR_CM_COEFF_RGB_FULL);
385 mixer_reg_write(ctx, MXR_CM_COEFF_CB,
386 MXR_CSC_CT(-0.102, -0.338, 0.440));
387 mixer_reg_write(ctx, MXR_CM_COEFF_CR,
388 MXR_CSC_CT( 0.440, -0.399, -0.040));
392 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
395 static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
396 unsigned int priority, bool enable)
398 u32 val = enable ? ~0 : 0;
402 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
403 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
404 MXR_LAYER_CFG_GRP0_VAL(priority),
405 MXR_LAYER_CFG_GRP0_MASK);
408 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
409 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
410 MXR_LAYER_CFG_GRP1_VAL(priority),
411 MXR_LAYER_CFG_GRP1_MASK);
415 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
416 vp_reg_writemask(ctx, VP_ENABLE, val, VP_ENABLE_ON);
417 mixer_reg_writemask(ctx, MXR_CFG, val,
419 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
420 MXR_LAYER_CFG_VP_VAL(priority),
421 MXR_LAYER_CFG_VP_MASK);
427 static void mixer_run(struct mixer_context *ctx)
429 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
432 static void mixer_stop(struct mixer_context *ctx)
436 mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
438 while (!(mixer_reg_read(ctx, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
440 usleep_range(10000, 12000);
443 static void mixer_commit(struct mixer_context *ctx)
445 struct drm_display_mode *mode = &ctx->crtc->base.state->adjusted_mode;
447 mixer_cfg_scan(ctx, mode->hdisplay, mode->vdisplay);
448 mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
452 static void vp_video_buffer(struct mixer_context *ctx,
453 struct exynos_drm_plane *plane)
455 struct exynos_drm_plane_state *state =
456 to_exynos_plane_state(plane->base.state);
457 struct drm_framebuffer *fb = state->base.fb;
458 unsigned int priority = state->base.normalized_zpos + 1;
460 dma_addr_t luma_addr[2], chroma_addr[2];
461 bool is_tiled, is_nv21;
464 is_nv21 = (fb->format->format == DRM_FORMAT_NV21);
465 is_tiled = (fb->modifier == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE);
467 luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0);
468 chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1);
470 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
472 luma_addr[1] = luma_addr[0] + 0x40;
473 chroma_addr[1] = chroma_addr[0] + 0x40;
475 luma_addr[1] = luma_addr[0] + fb->pitches[0];
476 chroma_addr[1] = chroma_addr[0] + fb->pitches[1];
483 spin_lock_irqsave(&ctx->reg_slock, flags);
485 vp_reg_write(ctx, VP_SHADOW_UPDATE, 1);
486 /* interlace or progressive scan mode */
487 val = (test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? ~0 : 0);
488 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_LINE_SKIP);
491 val = (is_nv21 ? VP_MODE_NV21 : VP_MODE_NV12);
492 val |= (is_tiled ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
493 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_FMT_MASK);
495 /* setting size of input image */
496 vp_reg_write(ctx, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
497 VP_IMG_VSIZE(fb->height));
498 /* chroma plane for NV12/NV21 is half the height of the luma plane */
499 vp_reg_write(ctx, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[1]) |
500 VP_IMG_VSIZE(fb->height / 2));
502 vp_reg_write(ctx, VP_SRC_WIDTH, state->src.w);
503 vp_reg_write(ctx, VP_SRC_H_POSITION,
504 VP_SRC_H_POSITION_VAL(state->src.x));
505 vp_reg_write(ctx, VP_DST_WIDTH, state->crtc.w);
506 vp_reg_write(ctx, VP_DST_H_POSITION, state->crtc.x);
508 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
509 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h / 2);
510 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y / 2);
511 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h / 2);
512 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y / 2);
514 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h);
515 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y);
516 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h);
517 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y);
520 vp_reg_write(ctx, VP_H_RATIO, state->h_ratio);
521 vp_reg_write(ctx, VP_V_RATIO, state->v_ratio);
523 vp_reg_write(ctx, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
525 /* set buffer address to vp */
526 vp_reg_write(ctx, VP_TOP_Y_PTR, luma_addr[0]);
527 vp_reg_write(ctx, VP_BOT_Y_PTR, luma_addr[1]);
528 vp_reg_write(ctx, VP_TOP_C_PTR, chroma_addr[0]);
529 vp_reg_write(ctx, VP_BOT_C_PTR, chroma_addr[1]);
531 mixer_cfg_layer(ctx, plane->index, priority, true);
532 mixer_cfg_vp_blend(ctx);
534 spin_unlock_irqrestore(&ctx->reg_slock, flags);
536 mixer_regs_dump(ctx);
540 static void mixer_layer_update(struct mixer_context *ctx)
542 mixer_reg_writemask(ctx, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
545 static void mixer_graph_buffer(struct mixer_context *ctx,
546 struct exynos_drm_plane *plane)
548 struct exynos_drm_plane_state *state =
549 to_exynos_plane_state(plane->base.state);
550 struct drm_framebuffer *fb = state->base.fb;
551 unsigned int priority = state->base.normalized_zpos + 1;
553 unsigned int win = plane->index;
554 unsigned int x_ratio = 0, y_ratio = 0;
555 unsigned int dst_x_offset, dst_y_offset;
560 switch (fb->format->format) {
561 case DRM_FORMAT_XRGB4444:
562 case DRM_FORMAT_ARGB4444:
563 fmt = MXR_FORMAT_ARGB4444;
566 case DRM_FORMAT_XRGB1555:
567 case DRM_FORMAT_ARGB1555:
568 fmt = MXR_FORMAT_ARGB1555;
571 case DRM_FORMAT_RGB565:
572 fmt = MXR_FORMAT_RGB565;
575 case DRM_FORMAT_XRGB8888:
576 case DRM_FORMAT_ARGB8888:
578 fmt = MXR_FORMAT_ARGB8888;
582 /* ratio is already checked by common plane code */
583 x_ratio = state->h_ratio == (1 << 15);
584 y_ratio = state->v_ratio == (1 << 15);
586 dst_x_offset = state->crtc.x;
587 dst_y_offset = state->crtc.y;
589 /* translate dma address base s.t. the source image offset is zero */
590 dma_addr = exynos_drm_fb_dma_addr(fb, 0)
591 + (state->src.x * fb->format->cpp[0])
592 + (state->src.y * fb->pitches[0]);
594 spin_lock_irqsave(&ctx->reg_slock, flags);
597 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
598 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
601 mixer_reg_write(ctx, MXR_GRAPHIC_SPAN(win),
602 fb->pitches[0] / fb->format->cpp[0]);
604 val = MXR_GRP_WH_WIDTH(state->src.w);
605 val |= MXR_GRP_WH_HEIGHT(state->src.h);
606 val |= MXR_GRP_WH_H_SCALE(x_ratio);
607 val |= MXR_GRP_WH_V_SCALE(y_ratio);
608 mixer_reg_write(ctx, MXR_GRAPHIC_WH(win), val);
610 /* setup offsets in display image */
611 val = MXR_GRP_DXY_DX(dst_x_offset);
612 val |= MXR_GRP_DXY_DY(dst_y_offset);
613 mixer_reg_write(ctx, MXR_GRAPHIC_DXY(win), val);
615 /* set buffer address to mixer */
616 mixer_reg_write(ctx, MXR_GRAPHIC_BASE(win), dma_addr);
618 mixer_cfg_layer(ctx, win, priority, true);
619 mixer_cfg_gfx_blend(ctx, win, fb->format->has_alpha);
621 /* layer update mandatory for mixer 16.0.33.0 */
622 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
623 ctx->mxr_ver == MXR_VER_128_0_0_184)
624 mixer_layer_update(ctx);
626 spin_unlock_irqrestore(&ctx->reg_slock, flags);
628 mixer_regs_dump(ctx);
631 static void vp_win_reset(struct mixer_context *ctx)
633 unsigned int tries = 100;
635 vp_reg_write(ctx, VP_SRESET, VP_SRESET_PROCESSING);
637 /* waiting until VP_SRESET_PROCESSING is 0 */
638 if (~vp_reg_read(ctx, VP_SRESET) & VP_SRESET_PROCESSING)
642 WARN(tries == 0, "failed to reset Video Processor\n");
645 static void mixer_win_reset(struct mixer_context *ctx)
649 spin_lock_irqsave(&ctx->reg_slock, flags);
651 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
653 /* set output in RGB888 mode */
654 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
656 /* 16 beat burst in DMA */
657 mixer_reg_writemask(ctx, MXR_STATUS, MXR_STATUS_16_BURST,
658 MXR_STATUS_BURST_MASK);
660 /* reset default layer priority */
661 mixer_reg_write(ctx, MXR_LAYER_CFG, 0);
663 /* set all background colors to RGB (0,0,0) */
664 mixer_reg_write(ctx, MXR_BG_COLOR0, MXR_YCBCR_VAL(0, 128, 128));
665 mixer_reg_write(ctx, MXR_BG_COLOR1, MXR_YCBCR_VAL(0, 128, 128));
666 mixer_reg_write(ctx, MXR_BG_COLOR2, MXR_YCBCR_VAL(0, 128, 128));
668 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
669 /* configuration of Video Processor Registers */
671 vp_default_filter(ctx);
674 /* disable all layers */
675 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
676 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
677 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
678 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
680 /* set all source image offsets to zero */
681 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(0), 0);
682 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(1), 0);
684 spin_unlock_irqrestore(&ctx->reg_slock, flags);
687 static irqreturn_t mixer_irq_handler(int irq, void *arg)
689 struct mixer_context *ctx = arg;
690 u32 val, base, shadow;
692 spin_lock(&ctx->reg_slock);
694 /* read interrupt status for handling and clearing flags for VSYNC */
695 val = mixer_reg_read(ctx, MXR_INT_STATUS);
698 if (val & MXR_INT_STATUS_VSYNC) {
699 /* vsync interrupt use different bit for read and clear */
700 val |= MXR_INT_CLEAR_VSYNC;
701 val &= ~MXR_INT_STATUS_VSYNC;
703 /* interlace scan need to check shadow register */
704 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
705 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags) &&
706 vp_reg_read(ctx, VP_SHADOW_UPDATE))
709 base = mixer_reg_read(ctx, MXR_CFG);
710 shadow = mixer_reg_read(ctx, MXR_CFG_S);
714 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(0));
715 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(0));
719 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(1));
720 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(1));
725 drm_crtc_handle_vblank(&ctx->crtc->base);
729 /* clear interrupts */
730 mixer_reg_write(ctx, MXR_INT_STATUS, val);
732 spin_unlock(&ctx->reg_slock);
737 static int mixer_resources_init(struct mixer_context *mixer_ctx)
739 struct device *dev = &mixer_ctx->pdev->dev;
740 struct resource *res;
743 spin_lock_init(&mixer_ctx->reg_slock);
745 mixer_ctx->mixer = devm_clk_get(dev, "mixer");
746 if (IS_ERR(mixer_ctx->mixer)) {
747 dev_err(dev, "failed to get clock 'mixer'\n");
751 mixer_ctx->hdmi = devm_clk_get(dev, "hdmi");
752 if (IS_ERR(mixer_ctx->hdmi)) {
753 dev_err(dev, "failed to get clock 'hdmi'\n");
754 return PTR_ERR(mixer_ctx->hdmi);
757 mixer_ctx->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
758 if (IS_ERR(mixer_ctx->sclk_hdmi)) {
759 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
762 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
764 dev_err(dev, "get memory resource failed.\n");
768 mixer_ctx->mixer_regs = devm_ioremap(dev, res->start,
770 if (mixer_ctx->mixer_regs == NULL) {
771 dev_err(dev, "register mapping failed.\n");
775 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0);
777 dev_err(dev, "get interrupt resource failed.\n");
781 ret = devm_request_irq(dev, res->start, mixer_irq_handler,
782 0, "drm_mixer", mixer_ctx);
784 dev_err(dev, "request interrupt failed.\n");
787 mixer_ctx->irq = res->start;
792 static int vp_resources_init(struct mixer_context *mixer_ctx)
794 struct device *dev = &mixer_ctx->pdev->dev;
795 struct resource *res;
797 mixer_ctx->vp = devm_clk_get(dev, "vp");
798 if (IS_ERR(mixer_ctx->vp)) {
799 dev_err(dev, "failed to get clock 'vp'\n");
803 if (test_bit(MXR_BIT_HAS_SCLK, &mixer_ctx->flags)) {
804 mixer_ctx->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
805 if (IS_ERR(mixer_ctx->sclk_mixer)) {
806 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
809 mixer_ctx->mout_mixer = devm_clk_get(dev, "mout_mixer");
810 if (IS_ERR(mixer_ctx->mout_mixer)) {
811 dev_err(dev, "failed to get clock 'mout_mixer'\n");
815 if (mixer_ctx->sclk_hdmi && mixer_ctx->mout_mixer)
816 clk_set_parent(mixer_ctx->mout_mixer,
817 mixer_ctx->sclk_hdmi);
820 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
822 dev_err(dev, "get memory resource failed.\n");
826 mixer_ctx->vp_regs = devm_ioremap(dev, res->start,
828 if (mixer_ctx->vp_regs == NULL) {
829 dev_err(dev, "register mapping failed.\n");
836 static int mixer_initialize(struct mixer_context *mixer_ctx,
837 struct drm_device *drm_dev)
840 struct exynos_drm_private *priv;
841 priv = drm_dev->dev_private;
843 mixer_ctx->drm_dev = drm_dev;
845 /* acquire resources: regs, irqs, clocks */
846 ret = mixer_resources_init(mixer_ctx);
848 DRM_ERROR("mixer_resources_init failed ret=%d\n", ret);
852 if (test_bit(MXR_BIT_VP_ENABLED, &mixer_ctx->flags)) {
853 /* acquire vp resources: regs, irqs, clocks */
854 ret = vp_resources_init(mixer_ctx);
856 DRM_ERROR("vp_resources_init failed ret=%d\n", ret);
861 return drm_iommu_attach_device(drm_dev, mixer_ctx->dev);
864 static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
866 drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev);
869 static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
871 struct mixer_context *mixer_ctx = crtc->ctx;
873 __set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
874 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
877 /* enable vsync interrupt */
878 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
879 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
884 static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
886 struct mixer_context *mixer_ctx = crtc->ctx;
888 __clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
890 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
893 /* disable vsync interrupt */
894 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
895 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
898 static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
900 struct mixer_context *mixer_ctx = crtc->ctx;
902 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
905 mixer_vsync_set_update(mixer_ctx, false);
908 static void mixer_update_plane(struct exynos_drm_crtc *crtc,
909 struct exynos_drm_plane *plane)
911 struct mixer_context *mixer_ctx = crtc->ctx;
913 DRM_DEBUG_KMS("win: %d\n", plane->index);
915 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
918 if (plane->index == VP_DEFAULT_WIN)
919 vp_video_buffer(mixer_ctx, plane);
921 mixer_graph_buffer(mixer_ctx, plane);
924 static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
925 struct exynos_drm_plane *plane)
927 struct mixer_context *mixer_ctx = crtc->ctx;
930 DRM_DEBUG_KMS("win: %d\n", plane->index);
932 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
935 spin_lock_irqsave(&mixer_ctx->reg_slock, flags);
936 mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
937 spin_unlock_irqrestore(&mixer_ctx->reg_slock, flags);
940 static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
942 struct mixer_context *mixer_ctx = crtc->ctx;
944 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
947 mixer_vsync_set_update(mixer_ctx, true);
948 exynos_crtc_handle_event(crtc);
951 static void mixer_enable(struct exynos_drm_crtc *crtc)
953 struct mixer_context *ctx = crtc->ctx;
955 if (test_bit(MXR_BIT_POWERED, &ctx->flags))
958 pm_runtime_get_sync(ctx->dev);
960 exynos_drm_pipe_clk_enable(crtc, true);
962 mixer_vsync_set_update(ctx, false);
964 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
966 if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
967 mixer_reg_writemask(ctx, MXR_INT_STATUS, ~0,
968 MXR_INT_CLEAR_VSYNC);
969 mixer_reg_writemask(ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
971 mixer_win_reset(ctx);
975 mixer_vsync_set_update(ctx, true);
977 set_bit(MXR_BIT_POWERED, &ctx->flags);
980 static void mixer_disable(struct exynos_drm_crtc *crtc)
982 struct mixer_context *ctx = crtc->ctx;
985 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
989 mixer_regs_dump(ctx);
991 for (i = 0; i < MIXER_WIN_NR; i++)
992 mixer_disable_plane(crtc, &ctx->planes[i]);
994 exynos_drm_pipe_clk_enable(crtc, false);
996 pm_runtime_put(ctx->dev);
998 clear_bit(MXR_BIT_POWERED, &ctx->flags);
1001 static int mixer_mode_valid(struct exynos_drm_crtc *crtc,
1002 const struct drm_display_mode *mode)
1004 struct mixer_context *ctx = crtc->ctx;
1005 u32 w = mode->hdisplay, h = mode->vdisplay;
1007 DRM_DEBUG_KMS("xres=%d, yres=%d, refresh=%d, intl=%d\n", w, h,
1008 mode->vrefresh, !!(mode->flags & DRM_MODE_FLAG_INTERLACE));
1010 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1013 if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1014 (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1015 (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1018 if ((w == 1024 && h == 768) ||
1019 (w == 1366 && h == 768) ||
1020 (w == 1280 && h == 1024))
1026 static bool mixer_mode_fixup(struct exynos_drm_crtc *crtc,
1027 const struct drm_display_mode *mode,
1028 struct drm_display_mode *adjusted_mode)
1030 struct mixer_context *ctx = crtc->ctx;
1031 int width = mode->hdisplay, height = mode->vdisplay, i;
1034 int hdisplay, vdisplay, htotal, vtotal, scan_val;
1035 } static const modes[] = {
1036 { 720, 480, 858, 525, MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD },
1037 { 720, 576, 864, 625, MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD },
1038 { 1280, 720, 1650, 750, MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD },
1039 { 1920, 1080, 2200, 1125, MXR_CFG_SCAN_HD_1080 |
1043 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
1044 __set_bit(MXR_BIT_INTERLACE, &ctx->flags);
1046 __clear_bit(MXR_BIT_INTERLACE, &ctx->flags);
1048 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1051 for (i = 0; i < ARRAY_SIZE(modes); ++i)
1052 if (width <= modes[i].hdisplay && height <= modes[i].vdisplay) {
1053 ctx->scan_value = modes[i].scan_val;
1054 if (width < modes[i].hdisplay ||
1055 height < modes[i].vdisplay) {
1056 adjusted_mode->hdisplay = modes[i].hdisplay;
1057 adjusted_mode->hsync_start = modes[i].hdisplay;
1058 adjusted_mode->hsync_end = modes[i].htotal;
1059 adjusted_mode->htotal = modes[i].htotal;
1060 adjusted_mode->vdisplay = modes[i].vdisplay;
1061 adjusted_mode->vsync_start = modes[i].vdisplay;
1062 adjusted_mode->vsync_end = modes[i].vtotal;
1063 adjusted_mode->vtotal = modes[i].vtotal;
1072 static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1073 .enable = mixer_enable,
1074 .disable = mixer_disable,
1075 .enable_vblank = mixer_enable_vblank,
1076 .disable_vblank = mixer_disable_vblank,
1077 .atomic_begin = mixer_atomic_begin,
1078 .update_plane = mixer_update_plane,
1079 .disable_plane = mixer_disable_plane,
1080 .atomic_flush = mixer_atomic_flush,
1081 .mode_valid = mixer_mode_valid,
1082 .mode_fixup = mixer_mode_fixup,
1085 static const struct mixer_drv_data exynos5420_mxr_drv_data = {
1086 .version = MXR_VER_128_0_0_184,
1090 static const struct mixer_drv_data exynos5250_mxr_drv_data = {
1091 .version = MXR_VER_16_0_33_0,
1095 static const struct mixer_drv_data exynos4212_mxr_drv_data = {
1096 .version = MXR_VER_0_0_0_16,
1100 static const struct mixer_drv_data exynos4210_mxr_drv_data = {
1101 .version = MXR_VER_0_0_0_16,
1106 static const struct of_device_id mixer_match_types[] = {
1108 .compatible = "samsung,exynos4210-mixer",
1109 .data = &exynos4210_mxr_drv_data,
1111 .compatible = "samsung,exynos4212-mixer",
1112 .data = &exynos4212_mxr_drv_data,
1114 .compatible = "samsung,exynos5-mixer",
1115 .data = &exynos5250_mxr_drv_data,
1117 .compatible = "samsung,exynos5250-mixer",
1118 .data = &exynos5250_mxr_drv_data,
1120 .compatible = "samsung,exynos5420-mixer",
1121 .data = &exynos5420_mxr_drv_data,
1126 MODULE_DEVICE_TABLE(of, mixer_match_types);
1128 static int mixer_bind(struct device *dev, struct device *manager, void *data)
1130 struct mixer_context *ctx = dev_get_drvdata(dev);
1131 struct drm_device *drm_dev = data;
1132 struct exynos_drm_plane *exynos_plane;
1136 ret = mixer_initialize(ctx, drm_dev);
1140 for (i = 0; i < MIXER_WIN_NR; i++) {
1141 if (i == VP_DEFAULT_WIN && !test_bit(MXR_BIT_VP_ENABLED,
1145 ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1151 exynos_plane = &ctx->planes[DEFAULT_WIN];
1152 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1153 EXYNOS_DISPLAY_TYPE_HDMI, &mixer_crtc_ops, ctx);
1154 if (IS_ERR(ctx->crtc)) {
1155 mixer_ctx_remove(ctx);
1156 ret = PTR_ERR(ctx->crtc);
1163 devm_kfree(dev, ctx);
1167 static void mixer_unbind(struct device *dev, struct device *master, void *data)
1169 struct mixer_context *ctx = dev_get_drvdata(dev);
1171 mixer_ctx_remove(ctx);
1174 static const struct component_ops mixer_component_ops = {
1176 .unbind = mixer_unbind,
1179 static int mixer_probe(struct platform_device *pdev)
1181 struct device *dev = &pdev->dev;
1182 const struct mixer_drv_data *drv;
1183 struct mixer_context *ctx;
1186 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1188 DRM_ERROR("failed to alloc mixer context.\n");
1192 drv = of_device_get_match_data(dev);
1196 ctx->mxr_ver = drv->version;
1198 if (drv->is_vp_enabled)
1199 __set_bit(MXR_BIT_VP_ENABLED, &ctx->flags);
1201 __set_bit(MXR_BIT_HAS_SCLK, &ctx->flags);
1203 platform_set_drvdata(pdev, ctx);
1205 ret = component_add(&pdev->dev, &mixer_component_ops);
1207 pm_runtime_enable(dev);
1212 static int mixer_remove(struct platform_device *pdev)
1214 pm_runtime_disable(&pdev->dev);
1216 component_del(&pdev->dev, &mixer_component_ops);
1221 static int __maybe_unused exynos_mixer_suspend(struct device *dev)
1223 struct mixer_context *ctx = dev_get_drvdata(dev);
1225 clk_disable_unprepare(ctx->hdmi);
1226 clk_disable_unprepare(ctx->mixer);
1227 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1228 clk_disable_unprepare(ctx->vp);
1229 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags))
1230 clk_disable_unprepare(ctx->sclk_mixer);
1236 static int __maybe_unused exynos_mixer_resume(struct device *dev)
1238 struct mixer_context *ctx = dev_get_drvdata(dev);
1241 ret = clk_prepare_enable(ctx->mixer);
1243 DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret);
1246 ret = clk_prepare_enable(ctx->hdmi);
1248 DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret);
1251 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1252 ret = clk_prepare_enable(ctx->vp);
1254 DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n",
1258 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags)) {
1259 ret = clk_prepare_enable(ctx->sclk_mixer);
1261 DRM_ERROR("Failed to prepare_enable the " \
1262 "sclk_mixer clk [%d]\n",
1272 static const struct dev_pm_ops exynos_mixer_pm_ops = {
1273 SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)
1276 struct platform_driver mixer_driver = {
1278 .name = "exynos-mixer",
1279 .owner = THIS_MODULE,
1280 .pm = &exynos_mixer_pm_ops,
1281 .of_match_table = mixer_match_types,
1283 .probe = mixer_probe,
1284 .remove = mixer_remove,