1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2011 Samsung Electronics Co.Ltd
5 * Seung-Woo Kim <sw0312.kim@samsung.com>
6 * Inki Dae <inki.dae@samsung.com>
7 * Joonyoung Shim <jy0922.shim@samsung.com>
9 * Based on drivers/media/video/s5p-tv/mixer_reg.c
12 #include <linux/clk.h>
13 #include <linux/component.h>
14 #include <linux/delay.h>
15 #include <linux/i2c.h>
16 #include <linux/interrupt.h>
17 #include <linux/irq.h>
18 #include <linux/kernel.h>
19 #include <linux/ktime.h>
21 #include <linux/of_device.h>
22 #include <linux/platform_device.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/regulator/consumer.h>
25 #include <linux/spinlock.h>
26 #include <linux/wait.h>
28 #include <drm/drm_fourcc.h>
29 #include <drm/drm_vblank.h>
30 #include <drm/exynos_drm.h>
32 #include "exynos_drm_crtc.h"
33 #include "exynos_drm_drv.h"
34 #include "exynos_drm_fb.h"
35 #include "exynos_drm_plane.h"
36 #include "regs-mixer.h"
39 #define MIXER_WIN_NR 3
40 #define VP_DEFAULT_WIN 2
43 * Mixer color space conversion coefficient triplet.
44 * Used for CSC from RGB to YCbCr.
45 * Each coefficient is a 10-bit fixed point number with
46 * sign and no integer part, i.e.
47 * [0:8] = fractional part (representing a value y = x / 2^9)
49 * Negative values are encoded with two's complement.
51 #define MXR_CSC_C(x) ((int)((x) * 512.0) & 0x3ff)
52 #define MXR_CSC_CT(a0, a1, a2) \
53 ((MXR_CSC_C(a0) << 20) | (MXR_CSC_C(a1) << 10) | (MXR_CSC_C(a2) << 0))
55 /* YCbCr value, used for mixer background color configuration. */
56 #define MXR_YCBCR_VAL(y, cb, cr) (((y) << 16) | ((cb) << 8) | ((cr) << 0))
58 /* The pixelformats that are natively supported by the mixer. */
59 #define MXR_FORMAT_RGB565 4
60 #define MXR_FORMAT_ARGB1555 5
61 #define MXR_FORMAT_ARGB4444 6
62 #define MXR_FORMAT_ARGB8888 7
64 enum mixer_version_id {
70 enum mixer_flag_bits {
78 static const uint32_t mixer_formats[] = {
88 static const uint32_t vp_formats[] = {
93 struct mixer_context {
94 struct platform_device *pdev;
96 struct drm_device *drm_dev;
98 struct exynos_drm_crtc *crtc;
99 struct exynos_drm_plane planes[MIXER_WIN_NR];
103 void __iomem *mixer_regs;
104 void __iomem *vp_regs;
105 spinlock_t reg_slock;
109 struct clk *sclk_mixer;
110 struct clk *sclk_hdmi;
111 struct clk *mout_mixer;
112 enum mixer_version_id mxr_ver;
116 struct mixer_drv_data {
117 enum mixer_version_id version;
122 static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
125 .type = DRM_PLANE_TYPE_PRIMARY,
126 .pixel_formats = mixer_formats,
127 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
128 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
129 EXYNOS_DRM_PLANE_CAP_ZPOS |
130 EXYNOS_DRM_PLANE_CAP_PIX_BLEND |
131 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
134 .type = DRM_PLANE_TYPE_CURSOR,
135 .pixel_formats = mixer_formats,
136 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
137 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
138 EXYNOS_DRM_PLANE_CAP_ZPOS |
139 EXYNOS_DRM_PLANE_CAP_PIX_BLEND |
140 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
143 .type = DRM_PLANE_TYPE_OVERLAY,
144 .pixel_formats = vp_formats,
145 .num_pixel_formats = ARRAY_SIZE(vp_formats),
146 .capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
147 EXYNOS_DRM_PLANE_CAP_ZPOS |
148 EXYNOS_DRM_PLANE_CAP_TILE |
149 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
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_DEV_DEBUG_KMS(ctx->dev, #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_DEV_DEBUG_KMS(ctx->dev, #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,
312 unsigned int pixel_alpha, unsigned int alpha)
314 u32 win_alpha = alpha >> 8;
317 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
318 switch (pixel_alpha) {
319 case DRM_MODE_BLEND_PIXEL_NONE:
321 case DRM_MODE_BLEND_COVERAGE:
322 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
324 case DRM_MODE_BLEND_PREMULTI:
326 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
327 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
331 if (alpha != DRM_BLEND_ALPHA_OPAQUE) {
332 val |= MXR_GRP_CFG_WIN_BLEND_EN;
335 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
336 val, MXR_GRP_CFG_MISC_MASK);
339 static void mixer_cfg_vp_blend(struct mixer_context *ctx, unsigned int alpha)
341 u32 win_alpha = alpha >> 8;
344 if (alpha != DRM_BLEND_ALPHA_OPAQUE) {
345 val |= MXR_VID_CFG_BLEND_EN;
348 mixer_reg_write(ctx, MXR_VIDEO_CFG, val);
351 static bool mixer_is_synced(struct mixer_context *ctx)
355 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
356 ctx->mxr_ver == MXR_VER_128_0_0_184)
357 return !(mixer_reg_read(ctx, MXR_CFG) &
358 MXR_CFG_LAYER_UPDATE_COUNT_MASK);
360 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags) &&
361 vp_reg_read(ctx, VP_SHADOW_UPDATE))
364 base = mixer_reg_read(ctx, MXR_CFG);
365 shadow = mixer_reg_read(ctx, MXR_CFG_S);
369 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(0));
370 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(0));
374 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(1));
375 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(1));
382 static int mixer_wait_for_sync(struct mixer_context *ctx)
384 ktime_t timeout = ktime_add_us(ktime_get(), 100000);
386 while (!mixer_is_synced(ctx)) {
387 usleep_range(1000, 2000);
388 if (ktime_compare(ktime_get(), timeout) > 0)
394 static void mixer_disable_sync(struct mixer_context *ctx)
396 mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_SYNC_ENABLE);
399 static void mixer_enable_sync(struct mixer_context *ctx)
401 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
402 ctx->mxr_ver == MXR_VER_128_0_0_184)
403 mixer_reg_writemask(ctx, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
404 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SYNC_ENABLE);
405 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
406 vp_reg_write(ctx, VP_SHADOW_UPDATE, VP_SHADOW_UPDATE_ENABLE);
409 static void mixer_cfg_scan(struct mixer_context *ctx, int width, int height)
413 /* choosing between interlace and progressive mode */
414 val = test_bit(MXR_BIT_INTERLACE, &ctx->flags) ?
415 MXR_CFG_SCAN_INTERLACE : MXR_CFG_SCAN_PROGRESSIVE;
417 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
418 mixer_reg_write(ctx, MXR_RESOLUTION,
419 MXR_MXR_RES_HEIGHT(height) | MXR_MXR_RES_WIDTH(width));
421 val |= ctx->scan_value;
423 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_SCAN_MASK);
426 static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, struct drm_display_mode *mode)
428 enum hdmi_quantization_range range = drm_default_rgb_quant_range(mode);
431 if (mode->vdisplay < 720) {
432 val = MXR_CFG_RGB601;
434 val = MXR_CFG_RGB709;
436 /* Configure the BT.709 CSC matrix for full range RGB. */
437 mixer_reg_write(ctx, MXR_CM_COEFF_Y,
438 MXR_CSC_CT( 0.184, 0.614, 0.063) |
439 MXR_CM_COEFF_RGB_FULL);
440 mixer_reg_write(ctx, MXR_CM_COEFF_CB,
441 MXR_CSC_CT(-0.102, -0.338, 0.440));
442 mixer_reg_write(ctx, MXR_CM_COEFF_CR,
443 MXR_CSC_CT( 0.440, -0.399, -0.040));
446 if (range == HDMI_QUANTIZATION_RANGE_FULL)
447 val |= MXR_CFG_QUANT_RANGE_FULL;
449 val |= MXR_CFG_QUANT_RANGE_LIMITED;
451 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
454 static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
455 unsigned int priority, bool enable)
457 u32 val = enable ? ~0 : 0;
461 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
462 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
463 MXR_LAYER_CFG_GRP0_VAL(priority),
464 MXR_LAYER_CFG_GRP0_MASK);
467 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
468 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
469 MXR_LAYER_CFG_GRP1_VAL(priority),
470 MXR_LAYER_CFG_GRP1_MASK);
474 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
475 vp_reg_writemask(ctx, VP_ENABLE, val, VP_ENABLE_ON);
476 mixer_reg_writemask(ctx, MXR_CFG, val,
478 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
479 MXR_LAYER_CFG_VP_VAL(priority),
480 MXR_LAYER_CFG_VP_MASK);
486 static void mixer_run(struct mixer_context *ctx)
488 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
491 static void mixer_stop(struct mixer_context *ctx)
495 mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
497 while (!(mixer_reg_read(ctx, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
499 usleep_range(10000, 12000);
502 static void mixer_commit(struct mixer_context *ctx)
504 struct drm_display_mode *mode = &ctx->crtc->base.state->adjusted_mode;
506 mixer_cfg_scan(ctx, mode->hdisplay, mode->vdisplay);
507 mixer_cfg_rgb_fmt(ctx, mode);
511 static void vp_video_buffer(struct mixer_context *ctx,
512 struct exynos_drm_plane *plane)
514 struct exynos_drm_plane_state *state =
515 to_exynos_plane_state(plane->base.state);
516 struct drm_framebuffer *fb = state->base.fb;
517 unsigned int priority = state->base.normalized_zpos + 1;
519 dma_addr_t luma_addr[2], chroma_addr[2];
520 bool is_tiled, is_nv21;
523 is_nv21 = (fb->format->format == DRM_FORMAT_NV21);
524 is_tiled = (fb->modifier == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE);
526 luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0);
527 chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1);
529 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
531 luma_addr[1] = luma_addr[0] + 0x40;
532 chroma_addr[1] = chroma_addr[0] + 0x40;
534 luma_addr[1] = luma_addr[0] + fb->pitches[0];
535 chroma_addr[1] = chroma_addr[0] + fb->pitches[1];
542 spin_lock_irqsave(&ctx->reg_slock, flags);
544 /* interlace or progressive scan mode */
545 val = (test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? ~0 : 0);
546 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_LINE_SKIP);
549 val = (is_nv21 ? VP_MODE_NV21 : VP_MODE_NV12);
550 val |= (is_tiled ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
551 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_FMT_MASK);
553 /* setting size of input image */
554 vp_reg_write(ctx, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
555 VP_IMG_VSIZE(fb->height));
556 /* chroma plane for NV12/NV21 is half the height of the luma plane */
557 vp_reg_write(ctx, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[1]) |
558 VP_IMG_VSIZE(fb->height / 2));
560 vp_reg_write(ctx, VP_SRC_WIDTH, state->src.w);
561 vp_reg_write(ctx, VP_SRC_H_POSITION,
562 VP_SRC_H_POSITION_VAL(state->src.x));
563 vp_reg_write(ctx, VP_DST_WIDTH, state->crtc.w);
564 vp_reg_write(ctx, VP_DST_H_POSITION, state->crtc.x);
566 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
567 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h / 2);
568 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y / 2);
569 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h / 2);
570 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y / 2);
572 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h);
573 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y);
574 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h);
575 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y);
578 vp_reg_write(ctx, VP_H_RATIO, state->h_ratio);
579 vp_reg_write(ctx, VP_V_RATIO, state->v_ratio);
581 vp_reg_write(ctx, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
583 /* set buffer address to vp */
584 vp_reg_write(ctx, VP_TOP_Y_PTR, luma_addr[0]);
585 vp_reg_write(ctx, VP_BOT_Y_PTR, luma_addr[1]);
586 vp_reg_write(ctx, VP_TOP_C_PTR, chroma_addr[0]);
587 vp_reg_write(ctx, VP_BOT_C_PTR, chroma_addr[1]);
589 mixer_cfg_layer(ctx, plane->index, priority, true);
590 mixer_cfg_vp_blend(ctx, state->base.alpha);
592 spin_unlock_irqrestore(&ctx->reg_slock, flags);
594 mixer_regs_dump(ctx);
598 static void mixer_graph_buffer(struct mixer_context *ctx,
599 struct exynos_drm_plane *plane)
601 struct exynos_drm_plane_state *state =
602 to_exynos_plane_state(plane->base.state);
603 struct drm_framebuffer *fb = state->base.fb;
604 unsigned int priority = state->base.normalized_zpos + 1;
606 unsigned int win = plane->index;
607 unsigned int x_ratio = 0, y_ratio = 0;
608 unsigned int dst_x_offset, dst_y_offset;
609 unsigned int pixel_alpha;
614 if (fb->format->has_alpha)
615 pixel_alpha = state->base.pixel_blend_mode;
617 pixel_alpha = DRM_MODE_BLEND_PIXEL_NONE;
619 switch (fb->format->format) {
620 case DRM_FORMAT_XRGB4444:
621 case DRM_FORMAT_ARGB4444:
622 fmt = MXR_FORMAT_ARGB4444;
625 case DRM_FORMAT_XRGB1555:
626 case DRM_FORMAT_ARGB1555:
627 fmt = MXR_FORMAT_ARGB1555;
630 case DRM_FORMAT_RGB565:
631 fmt = MXR_FORMAT_RGB565;
634 case DRM_FORMAT_XRGB8888:
635 case DRM_FORMAT_ARGB8888:
637 fmt = MXR_FORMAT_ARGB8888;
641 /* ratio is already checked by common plane code */
642 x_ratio = state->h_ratio == (1 << 15);
643 y_ratio = state->v_ratio == (1 << 15);
645 dst_x_offset = state->crtc.x;
646 dst_y_offset = state->crtc.y;
648 /* translate dma address base s.t. the source image offset is zero */
649 dma_addr = exynos_drm_fb_dma_addr(fb, 0)
650 + (state->src.x * fb->format->cpp[0])
651 + (state->src.y * fb->pitches[0]);
653 spin_lock_irqsave(&ctx->reg_slock, flags);
656 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
657 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
660 mixer_reg_write(ctx, MXR_GRAPHIC_SPAN(win),
661 fb->pitches[0] / fb->format->cpp[0]);
663 val = MXR_GRP_WH_WIDTH(state->src.w);
664 val |= MXR_GRP_WH_HEIGHT(state->src.h);
665 val |= MXR_GRP_WH_H_SCALE(x_ratio);
666 val |= MXR_GRP_WH_V_SCALE(y_ratio);
667 mixer_reg_write(ctx, MXR_GRAPHIC_WH(win), val);
669 /* setup offsets in display image */
670 val = MXR_GRP_DXY_DX(dst_x_offset);
671 val |= MXR_GRP_DXY_DY(dst_y_offset);
672 mixer_reg_write(ctx, MXR_GRAPHIC_DXY(win), val);
674 /* set buffer address to mixer */
675 mixer_reg_write(ctx, MXR_GRAPHIC_BASE(win), dma_addr);
677 mixer_cfg_layer(ctx, win, priority, true);
678 mixer_cfg_gfx_blend(ctx, win, pixel_alpha, state->base.alpha);
680 spin_unlock_irqrestore(&ctx->reg_slock, flags);
682 mixer_regs_dump(ctx);
685 static void vp_win_reset(struct mixer_context *ctx)
687 unsigned int tries = 100;
689 vp_reg_write(ctx, VP_SRESET, VP_SRESET_PROCESSING);
691 /* waiting until VP_SRESET_PROCESSING is 0 */
692 if (~vp_reg_read(ctx, VP_SRESET) & VP_SRESET_PROCESSING)
696 WARN(tries == 0, "failed to reset Video Processor\n");
699 static void mixer_win_reset(struct mixer_context *ctx)
703 spin_lock_irqsave(&ctx->reg_slock, flags);
705 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
707 /* set output in RGB888 mode */
708 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
710 /* 16 beat burst in DMA */
711 mixer_reg_writemask(ctx, MXR_STATUS, MXR_STATUS_16_BURST,
712 MXR_STATUS_BURST_MASK);
714 /* reset default layer priority */
715 mixer_reg_write(ctx, MXR_LAYER_CFG, 0);
717 /* set all background colors to RGB (0,0,0) */
718 mixer_reg_write(ctx, MXR_BG_COLOR0, MXR_YCBCR_VAL(0, 128, 128));
719 mixer_reg_write(ctx, MXR_BG_COLOR1, MXR_YCBCR_VAL(0, 128, 128));
720 mixer_reg_write(ctx, MXR_BG_COLOR2, MXR_YCBCR_VAL(0, 128, 128));
722 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
723 /* configuration of Video Processor Registers */
725 vp_default_filter(ctx);
728 /* disable all layers */
729 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
730 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
731 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
732 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
734 /* set all source image offsets to zero */
735 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(0), 0);
736 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(1), 0);
738 spin_unlock_irqrestore(&ctx->reg_slock, flags);
741 static irqreturn_t mixer_irq_handler(int irq, void *arg)
743 struct mixer_context *ctx = arg;
746 spin_lock(&ctx->reg_slock);
748 /* read interrupt status for handling and clearing flags for VSYNC */
749 val = mixer_reg_read(ctx, MXR_INT_STATUS);
752 if (val & MXR_INT_STATUS_VSYNC) {
753 /* vsync interrupt use different bit for read and clear */
754 val |= MXR_INT_CLEAR_VSYNC;
755 val &= ~MXR_INT_STATUS_VSYNC;
757 /* interlace scan need to check shadow register */
758 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)
759 && !mixer_is_synced(ctx))
762 drm_crtc_handle_vblank(&ctx->crtc->base);
766 /* clear interrupts */
767 mixer_reg_write(ctx, MXR_INT_STATUS, val);
769 spin_unlock(&ctx->reg_slock);
774 static int mixer_resources_init(struct mixer_context *mixer_ctx)
776 struct device *dev = &mixer_ctx->pdev->dev;
777 struct resource *res;
780 spin_lock_init(&mixer_ctx->reg_slock);
782 mixer_ctx->mixer = devm_clk_get(dev, "mixer");
783 if (IS_ERR(mixer_ctx->mixer)) {
784 dev_err(dev, "failed to get clock 'mixer'\n");
788 mixer_ctx->hdmi = devm_clk_get(dev, "hdmi");
789 if (IS_ERR(mixer_ctx->hdmi)) {
790 dev_err(dev, "failed to get clock 'hdmi'\n");
791 return PTR_ERR(mixer_ctx->hdmi);
794 mixer_ctx->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
795 if (IS_ERR(mixer_ctx->sclk_hdmi)) {
796 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
799 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
801 dev_err(dev, "get memory resource failed.\n");
805 mixer_ctx->mixer_regs = devm_ioremap(dev, res->start,
807 if (mixer_ctx->mixer_regs == NULL) {
808 dev_err(dev, "register mapping failed.\n");
812 ret = platform_get_irq(mixer_ctx->pdev, 0);
815 mixer_ctx->irq = ret;
817 ret = devm_request_irq(dev, mixer_ctx->irq, mixer_irq_handler,
818 0, "drm_mixer", mixer_ctx);
820 dev_err(dev, "request interrupt failed.\n");
827 static int vp_resources_init(struct mixer_context *mixer_ctx)
829 struct device *dev = &mixer_ctx->pdev->dev;
830 struct resource *res;
832 mixer_ctx->vp = devm_clk_get(dev, "vp");
833 if (IS_ERR(mixer_ctx->vp)) {
834 dev_err(dev, "failed to get clock 'vp'\n");
838 if (test_bit(MXR_BIT_HAS_SCLK, &mixer_ctx->flags)) {
839 mixer_ctx->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
840 if (IS_ERR(mixer_ctx->sclk_mixer)) {
841 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
844 mixer_ctx->mout_mixer = devm_clk_get(dev, "mout_mixer");
845 if (IS_ERR(mixer_ctx->mout_mixer)) {
846 dev_err(dev, "failed to get clock 'mout_mixer'\n");
850 if (mixer_ctx->sclk_hdmi && mixer_ctx->mout_mixer)
851 clk_set_parent(mixer_ctx->mout_mixer,
852 mixer_ctx->sclk_hdmi);
855 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
857 dev_err(dev, "get memory resource failed.\n");
861 mixer_ctx->vp_regs = devm_ioremap(dev, res->start,
863 if (mixer_ctx->vp_regs == NULL) {
864 dev_err(dev, "register mapping failed.\n");
871 static int mixer_initialize(struct mixer_context *mixer_ctx,
872 struct drm_device *drm_dev)
876 mixer_ctx->drm_dev = drm_dev;
878 /* acquire resources: regs, irqs, clocks */
879 ret = mixer_resources_init(mixer_ctx);
881 DRM_DEV_ERROR(mixer_ctx->dev,
882 "mixer_resources_init failed ret=%d\n", ret);
886 if (test_bit(MXR_BIT_VP_ENABLED, &mixer_ctx->flags)) {
887 /* acquire vp resources: regs, irqs, clocks */
888 ret = vp_resources_init(mixer_ctx);
890 DRM_DEV_ERROR(mixer_ctx->dev,
891 "vp_resources_init failed ret=%d\n", ret);
896 return exynos_drm_register_dma(drm_dev, mixer_ctx->dev,
897 &mixer_ctx->dma_priv);
900 static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
902 exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev,
903 &mixer_ctx->dma_priv);
906 static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
908 struct mixer_context *mixer_ctx = crtc->ctx;
910 __set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
911 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
914 /* enable vsync interrupt */
915 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
916 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
921 static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
923 struct mixer_context *mixer_ctx = crtc->ctx;
925 __clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
927 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
930 /* disable vsync interrupt */
931 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
932 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
935 static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
937 struct mixer_context *ctx = crtc->ctx;
939 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
942 if (mixer_wait_for_sync(ctx))
943 dev_err(ctx->dev, "timeout waiting for VSYNC\n");
944 mixer_disable_sync(ctx);
947 static void mixer_update_plane(struct exynos_drm_crtc *crtc,
948 struct exynos_drm_plane *plane)
950 struct mixer_context *mixer_ctx = crtc->ctx;
952 DRM_DEV_DEBUG_KMS(mixer_ctx->dev, "win: %d\n", plane->index);
954 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
957 if (plane->index == VP_DEFAULT_WIN)
958 vp_video_buffer(mixer_ctx, plane);
960 mixer_graph_buffer(mixer_ctx, plane);
963 static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
964 struct exynos_drm_plane *plane)
966 struct mixer_context *mixer_ctx = crtc->ctx;
969 DRM_DEV_DEBUG_KMS(mixer_ctx->dev, "win: %d\n", plane->index);
971 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
974 spin_lock_irqsave(&mixer_ctx->reg_slock, flags);
975 mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
976 spin_unlock_irqrestore(&mixer_ctx->reg_slock, flags);
979 static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
981 struct mixer_context *mixer_ctx = crtc->ctx;
983 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
986 mixer_enable_sync(mixer_ctx);
987 exynos_crtc_handle_event(crtc);
990 static void mixer_atomic_enable(struct exynos_drm_crtc *crtc)
992 struct mixer_context *ctx = crtc->ctx;
995 if (test_bit(MXR_BIT_POWERED, &ctx->flags))
998 ret = pm_runtime_resume_and_get(ctx->dev);
1000 dev_err(ctx->dev, "failed to enable MIXER device.\n");
1004 exynos_drm_pipe_clk_enable(crtc, true);
1006 mixer_disable_sync(ctx);
1008 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
1010 if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
1011 mixer_reg_writemask(ctx, MXR_INT_STATUS, ~0,
1012 MXR_INT_CLEAR_VSYNC);
1013 mixer_reg_writemask(ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
1015 mixer_win_reset(ctx);
1019 mixer_enable_sync(ctx);
1021 set_bit(MXR_BIT_POWERED, &ctx->flags);
1024 static void mixer_atomic_disable(struct exynos_drm_crtc *crtc)
1026 struct mixer_context *ctx = crtc->ctx;
1029 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
1033 mixer_regs_dump(ctx);
1035 for (i = 0; i < MIXER_WIN_NR; i++)
1036 mixer_disable_plane(crtc, &ctx->planes[i]);
1038 exynos_drm_pipe_clk_enable(crtc, false);
1040 pm_runtime_put(ctx->dev);
1042 clear_bit(MXR_BIT_POWERED, &ctx->flags);
1045 static int mixer_mode_valid(struct exynos_drm_crtc *crtc,
1046 const struct drm_display_mode *mode)
1048 struct mixer_context *ctx = crtc->ctx;
1049 u32 w = mode->hdisplay, h = mode->vdisplay;
1051 DRM_DEV_DEBUG_KMS(ctx->dev, "xres=%d, yres=%d, refresh=%d, intl=%d\n",
1052 w, h, drm_mode_vrefresh(mode),
1053 !!(mode->flags & DRM_MODE_FLAG_INTERLACE));
1055 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1058 if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1059 (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1060 (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1063 if ((w == 1024 && h == 768) ||
1064 (w == 1366 && h == 768) ||
1065 (w == 1280 && h == 1024))
1071 static bool mixer_mode_fixup(struct exynos_drm_crtc *crtc,
1072 const struct drm_display_mode *mode,
1073 struct drm_display_mode *adjusted_mode)
1075 struct mixer_context *ctx = crtc->ctx;
1076 int width = mode->hdisplay, height = mode->vdisplay, i;
1078 static const struct {
1079 int hdisplay, vdisplay, htotal, vtotal, scan_val;
1081 { 720, 480, 858, 525, MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD },
1082 { 720, 576, 864, 625, MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD },
1083 { 1280, 720, 1650, 750, MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD },
1084 { 1920, 1080, 2200, 1125, MXR_CFG_SCAN_HD_1080 |
1088 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
1089 __set_bit(MXR_BIT_INTERLACE, &ctx->flags);
1091 __clear_bit(MXR_BIT_INTERLACE, &ctx->flags);
1093 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1096 for (i = 0; i < ARRAY_SIZE(modes); ++i)
1097 if (width <= modes[i].hdisplay && height <= modes[i].vdisplay) {
1098 ctx->scan_value = modes[i].scan_val;
1099 if (width < modes[i].hdisplay ||
1100 height < modes[i].vdisplay) {
1101 adjusted_mode->hdisplay = modes[i].hdisplay;
1102 adjusted_mode->hsync_start = modes[i].hdisplay;
1103 adjusted_mode->hsync_end = modes[i].htotal;
1104 adjusted_mode->htotal = modes[i].htotal;
1105 adjusted_mode->vdisplay = modes[i].vdisplay;
1106 adjusted_mode->vsync_start = modes[i].vdisplay;
1107 adjusted_mode->vsync_end = modes[i].vtotal;
1108 adjusted_mode->vtotal = modes[i].vtotal;
1117 static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1118 .atomic_enable = mixer_atomic_enable,
1119 .atomic_disable = mixer_atomic_disable,
1120 .enable_vblank = mixer_enable_vblank,
1121 .disable_vblank = mixer_disable_vblank,
1122 .atomic_begin = mixer_atomic_begin,
1123 .update_plane = mixer_update_plane,
1124 .disable_plane = mixer_disable_plane,
1125 .atomic_flush = mixer_atomic_flush,
1126 .mode_valid = mixer_mode_valid,
1127 .mode_fixup = mixer_mode_fixup,
1130 static const struct mixer_drv_data exynos5420_mxr_drv_data = {
1131 .version = MXR_VER_128_0_0_184,
1135 static const struct mixer_drv_data exynos5250_mxr_drv_data = {
1136 .version = MXR_VER_16_0_33_0,
1140 static const struct mixer_drv_data exynos4212_mxr_drv_data = {
1141 .version = MXR_VER_0_0_0_16,
1145 static const struct mixer_drv_data exynos4210_mxr_drv_data = {
1146 .version = MXR_VER_0_0_0_16,
1151 static const struct of_device_id mixer_match_types[] = {
1153 .compatible = "samsung,exynos4210-mixer",
1154 .data = &exynos4210_mxr_drv_data,
1156 .compatible = "samsung,exynos4212-mixer",
1157 .data = &exynos4212_mxr_drv_data,
1159 .compatible = "samsung,exynos5-mixer",
1160 .data = &exynos5250_mxr_drv_data,
1162 .compatible = "samsung,exynos5250-mixer",
1163 .data = &exynos5250_mxr_drv_data,
1165 .compatible = "samsung,exynos5420-mixer",
1166 .data = &exynos5420_mxr_drv_data,
1171 MODULE_DEVICE_TABLE(of, mixer_match_types);
1173 static int mixer_bind(struct device *dev, struct device *manager, void *data)
1175 struct mixer_context *ctx = dev_get_drvdata(dev);
1176 struct drm_device *drm_dev = data;
1177 struct exynos_drm_plane *exynos_plane;
1181 ret = mixer_initialize(ctx, drm_dev);
1185 for (i = 0; i < MIXER_WIN_NR; i++) {
1186 if (i == VP_DEFAULT_WIN && !test_bit(MXR_BIT_VP_ENABLED,
1190 ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1196 exynos_plane = &ctx->planes[DEFAULT_WIN];
1197 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1198 EXYNOS_DISPLAY_TYPE_HDMI, &mixer_crtc_ops, ctx);
1199 if (IS_ERR(ctx->crtc)) {
1200 mixer_ctx_remove(ctx);
1201 ret = PTR_ERR(ctx->crtc);
1208 devm_kfree(dev, ctx);
1212 static void mixer_unbind(struct device *dev, struct device *master, void *data)
1214 struct mixer_context *ctx = dev_get_drvdata(dev);
1216 mixer_ctx_remove(ctx);
1219 static const struct component_ops mixer_component_ops = {
1221 .unbind = mixer_unbind,
1224 static int mixer_probe(struct platform_device *pdev)
1226 struct device *dev = &pdev->dev;
1227 const struct mixer_drv_data *drv;
1228 struct mixer_context *ctx;
1231 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1233 DRM_DEV_ERROR(dev, "failed to alloc mixer context.\n");
1237 drv = of_device_get_match_data(dev);
1241 ctx->mxr_ver = drv->version;
1243 if (drv->is_vp_enabled)
1244 __set_bit(MXR_BIT_VP_ENABLED, &ctx->flags);
1246 __set_bit(MXR_BIT_HAS_SCLK, &ctx->flags);
1248 platform_set_drvdata(pdev, ctx);
1250 pm_runtime_enable(dev);
1252 ret = component_add(&pdev->dev, &mixer_component_ops);
1254 pm_runtime_disable(dev);
1259 static int mixer_remove(struct platform_device *pdev)
1261 pm_runtime_disable(&pdev->dev);
1263 component_del(&pdev->dev, &mixer_component_ops);
1268 static int __maybe_unused exynos_mixer_suspend(struct device *dev)
1270 struct mixer_context *ctx = dev_get_drvdata(dev);
1272 clk_disable_unprepare(ctx->hdmi);
1273 clk_disable_unprepare(ctx->mixer);
1274 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1275 clk_disable_unprepare(ctx->vp);
1276 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags))
1277 clk_disable_unprepare(ctx->sclk_mixer);
1283 static int __maybe_unused exynos_mixer_resume(struct device *dev)
1285 struct mixer_context *ctx = dev_get_drvdata(dev);
1288 ret = clk_prepare_enable(ctx->mixer);
1290 DRM_DEV_ERROR(ctx->dev,
1291 "Failed to prepare_enable the mixer clk [%d]\n",
1295 ret = clk_prepare_enable(ctx->hdmi);
1298 "Failed to prepare_enable the hdmi clk [%d]\n",
1302 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1303 ret = clk_prepare_enable(ctx->vp);
1306 "Failed to prepare_enable the vp clk [%d]\n",
1310 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags)) {
1311 ret = clk_prepare_enable(ctx->sclk_mixer);
1314 "Failed to prepare_enable the " \
1315 "sclk_mixer clk [%d]\n",
1325 static const struct dev_pm_ops exynos_mixer_pm_ops = {
1326 SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)
1327 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1328 pm_runtime_force_resume)
1331 struct platform_driver mixer_driver = {
1333 .name = "exynos-mixer",
1334 .owner = THIS_MODULE,
1335 .pm = &exynos_mixer_pm_ops,
1336 .of_match_table = mixer_match_types,
1338 .probe = mixer_probe,
1339 .remove = mixer_remove,