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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2011 Samsung Electronics Co.Ltd
4 * Authors:
5 * Seung-Woo Kim <sw0312.kim@samsung.com>
6 * Inki Dae <inki.dae@samsung.com>
7 * Joonyoung Shim <jy0922.shim@samsung.com>
8 *
9 * Based on drivers/media/video/s5p-tv/mixer_reg.c
10 */
11
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>
20#include <linux/of.h>
21#include <linux/platform_device.h>
22#include <linux/pm_runtime.h>
23#include <linux/regulator/consumer.h>
24#include <linux/spinlock.h>
25#include <linux/wait.h>
26
27#include <drm/drm_blend.h>
28#include <drm/drm_edid.h>
29#include <drm/drm_fourcc.h>
30#include <drm/drm_framebuffer.h>
31#include <drm/drm_vblank.h>
32#include <drm/exynos_drm.h>
33
34#include "exynos_drm_crtc.h"
35#include "exynos_drm_drv.h"
36#include "exynos_drm_fb.h"
37#include "exynos_drm_plane.h"
38#include "regs-mixer.h"
39#include "regs-vp.h"
40
41#define MIXER_WIN_NR 3
42#define VP_DEFAULT_WIN 2
43
44/*
45 * Mixer color space conversion coefficient triplet.
46 * Used for CSC from RGB to YCbCr.
47 * Each coefficient is a 10-bit fixed point number with
48 * sign and no integer part, i.e.
49 * [0:8] = fractional part (representing a value y = x / 2^9)
50 * [9] = sign
51 * Negative values are encoded with two's complement.
52 */
53#define MXR_CSC_C(x) ((int)((x) * 512.0) & 0x3ff)
54#define MXR_CSC_CT(a0, a1, a2) \
55 ((MXR_CSC_C(a0) << 20) | (MXR_CSC_C(a1) << 10) | (MXR_CSC_C(a2) << 0))
56
57/* YCbCr value, used for mixer background color configuration. */
58#define MXR_YCBCR_VAL(y, cb, cr) (((y) << 16) | ((cb) << 8) | ((cr) << 0))
59
60/* The pixelformats that are natively supported by the mixer. */
61#define MXR_FORMAT_RGB565 4
62#define MXR_FORMAT_ARGB1555 5
63#define MXR_FORMAT_ARGB4444 6
64#define MXR_FORMAT_ARGB8888 7
65
66enum mixer_version_id {
67 MXR_VER_0_0_0_16,
68 MXR_VER_16_0_33_0,
69 MXR_VER_128_0_0_184,
70};
71
72enum mixer_flag_bits {
73 MXR_BIT_POWERED,
74 MXR_BIT_VSYNC,
75 MXR_BIT_INTERLACE,
76 MXR_BIT_VP_ENABLED,
77 MXR_BIT_HAS_SCLK,
78};
79
80static const uint32_t mixer_formats[] = {
81 DRM_FORMAT_XRGB4444,
82 DRM_FORMAT_ARGB4444,
83 DRM_FORMAT_XRGB1555,
84 DRM_FORMAT_ARGB1555,
85 DRM_FORMAT_RGB565,
86 DRM_FORMAT_XRGB8888,
87 DRM_FORMAT_ARGB8888,
88};
89
90static const uint32_t vp_formats[] = {
91 DRM_FORMAT_NV12,
92 DRM_FORMAT_NV21,
93};
94
95struct mixer_context {
96 struct platform_device *pdev;
97 struct device *dev;
98 struct drm_device *drm_dev;
99 void *dma_priv;
100 struct exynos_drm_crtc *crtc;
101 struct exynos_drm_plane planes[MIXER_WIN_NR];
102 unsigned long flags;
103
104 int irq;
105 void __iomem *mixer_regs;
106 void __iomem *vp_regs;
107 spinlock_t reg_slock;
108 struct clk *mixer;
109 struct clk *vp;
110 struct clk *hdmi;
111 struct clk *sclk_mixer;
112 struct clk *sclk_hdmi;
113 struct clk *mout_mixer;
114 enum mixer_version_id mxr_ver;
115 int scan_value;
116};
117
118struct mixer_drv_data {
119 enum mixer_version_id version;
120 bool is_vp_enabled;
121 bool has_sclk;
122};
123
124static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
125 {
126 .zpos = 0,
127 .type = DRM_PLANE_TYPE_PRIMARY,
128 .pixel_formats = mixer_formats,
129 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
130 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
131 EXYNOS_DRM_PLANE_CAP_ZPOS |
132 EXYNOS_DRM_PLANE_CAP_PIX_BLEND |
133 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
134 }, {
135 .zpos = 1,
136 .type = DRM_PLANE_TYPE_CURSOR,
137 .pixel_formats = mixer_formats,
138 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
139 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
140 EXYNOS_DRM_PLANE_CAP_ZPOS |
141 EXYNOS_DRM_PLANE_CAP_PIX_BLEND |
142 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
143 }, {
144 .zpos = 2,
145 .type = DRM_PLANE_TYPE_OVERLAY,
146 .pixel_formats = vp_formats,
147 .num_pixel_formats = ARRAY_SIZE(vp_formats),
148 .capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
149 EXYNOS_DRM_PLANE_CAP_ZPOS |
150 EXYNOS_DRM_PLANE_CAP_TILE |
151 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
152 },
153};
154
155static const u8 filter_y_horiz_tap8[] = {
156 0, -1, -1, -1, -1, -1, -1, -1,
157 -1, -1, -1, -1, -1, 0, 0, 0,
158 0, 2, 4, 5, 6, 6, 6, 6,
159 6, 5, 5, 4, 3, 2, 1, 1,
160 0, -6, -12, -16, -18, -20, -21, -20,
161 -20, -18, -16, -13, -10, -8, -5, -2,
162 127, 126, 125, 121, 114, 107, 99, 89,
163 79, 68, 57, 46, 35, 25, 16, 8,
164};
165
166static const u8 filter_y_vert_tap4[] = {
167 0, -3, -6, -8, -8, -8, -8, -7,
168 -6, -5, -4, -3, -2, -1, -1, 0,
169 127, 126, 124, 118, 111, 102, 92, 81,
170 70, 59, 48, 37, 27, 19, 11, 5,
171 0, 5, 11, 19, 27, 37, 48, 59,
172 70, 81, 92, 102, 111, 118, 124, 126,
173 0, 0, -1, -1, -2, -3, -4, -5,
174 -6, -7, -8, -8, -8, -8, -6, -3,
175};
176
177static const u8 filter_cr_horiz_tap4[] = {
178 0, -3, -6, -8, -8, -8, -8, -7,
179 -6, -5, -4, -3, -2, -1, -1, 0,
180 127, 126, 124, 118, 111, 102, 92, 81,
181 70, 59, 48, 37, 27, 19, 11, 5,
182};
183
184static inline u32 vp_reg_read(struct mixer_context *ctx, u32 reg_id)
185{
186 return readl(ctx->vp_regs + reg_id);
187}
188
189static inline void vp_reg_write(struct mixer_context *ctx, u32 reg_id,
190 u32 val)
191{
192 writel(val, ctx->vp_regs + reg_id);
193}
194
195static inline void vp_reg_writemask(struct mixer_context *ctx, u32 reg_id,
196 u32 val, u32 mask)
197{
198 u32 old = vp_reg_read(ctx, reg_id);
199
200 val = (val & mask) | (old & ~mask);
201 writel(val, ctx->vp_regs + reg_id);
202}
203
204static inline u32 mixer_reg_read(struct mixer_context *ctx, u32 reg_id)
205{
206 return readl(ctx->mixer_regs + reg_id);
207}
208
209static inline void mixer_reg_write(struct mixer_context *ctx, u32 reg_id,
210 u32 val)
211{
212 writel(val, ctx->mixer_regs + reg_id);
213}
214
215static inline void mixer_reg_writemask(struct mixer_context *ctx,
216 u32 reg_id, u32 val, u32 mask)
217{
218 u32 old = mixer_reg_read(ctx, reg_id);
219
220 val = (val & mask) | (old & ~mask);
221 writel(val, ctx->mixer_regs + reg_id);
222}
223
224static void mixer_regs_dump(struct mixer_context *ctx)
225{
226#define DUMPREG(reg_id) \
227do { \
228 DRM_DEV_DEBUG_KMS(ctx->dev, #reg_id " = %08x\n", \
229 (u32)readl(ctx->mixer_regs + reg_id)); \
230} while (0)
231
232 DUMPREG(MXR_STATUS);
233 DUMPREG(MXR_CFG);
234 DUMPREG(MXR_INT_EN);
235 DUMPREG(MXR_INT_STATUS);
236
237 DUMPREG(MXR_LAYER_CFG);
238 DUMPREG(MXR_VIDEO_CFG);
239
240 DUMPREG(MXR_GRAPHIC0_CFG);
241 DUMPREG(MXR_GRAPHIC0_BASE);
242 DUMPREG(MXR_GRAPHIC0_SPAN);
243 DUMPREG(MXR_GRAPHIC0_WH);
244 DUMPREG(MXR_GRAPHIC0_SXY);
245 DUMPREG(MXR_GRAPHIC0_DXY);
246
247 DUMPREG(MXR_GRAPHIC1_CFG);
248 DUMPREG(MXR_GRAPHIC1_BASE);
249 DUMPREG(MXR_GRAPHIC1_SPAN);
250 DUMPREG(MXR_GRAPHIC1_WH);
251 DUMPREG(MXR_GRAPHIC1_SXY);
252 DUMPREG(MXR_GRAPHIC1_DXY);
253#undef DUMPREG
254}
255
256static void vp_regs_dump(struct mixer_context *ctx)
257{
258#define DUMPREG(reg_id) \
259do { \
260 DRM_DEV_DEBUG_KMS(ctx->dev, #reg_id " = %08x\n", \
261 (u32) readl(ctx->vp_regs + reg_id)); \
262} while (0)
263
264 DUMPREG(VP_ENABLE);
265 DUMPREG(VP_SRESET);
266 DUMPREG(VP_SHADOW_UPDATE);
267 DUMPREG(VP_FIELD_ID);
268 DUMPREG(VP_MODE);
269 DUMPREG(VP_IMG_SIZE_Y);
270 DUMPREG(VP_IMG_SIZE_C);
271 DUMPREG(VP_PER_RATE_CTRL);
272 DUMPREG(VP_TOP_Y_PTR);
273 DUMPREG(VP_BOT_Y_PTR);
274 DUMPREG(VP_TOP_C_PTR);
275 DUMPREG(VP_BOT_C_PTR);
276 DUMPREG(VP_ENDIAN_MODE);
277 DUMPREG(VP_SRC_H_POSITION);
278 DUMPREG(VP_SRC_V_POSITION);
279 DUMPREG(VP_SRC_WIDTH);
280 DUMPREG(VP_SRC_HEIGHT);
281 DUMPREG(VP_DST_H_POSITION);
282 DUMPREG(VP_DST_V_POSITION);
283 DUMPREG(VP_DST_WIDTH);
284 DUMPREG(VP_DST_HEIGHT);
285 DUMPREG(VP_H_RATIO);
286 DUMPREG(VP_V_RATIO);
287
288#undef DUMPREG
289}
290
291static inline void vp_filter_set(struct mixer_context *ctx,
292 int reg_id, const u8 *data, unsigned int size)
293{
294 /* assure 4-byte align */
295 BUG_ON(size & 3);
296 for (; size; size -= 4, reg_id += 4, data += 4) {
297 u32 val = (data[0] << 24) | (data[1] << 16) |
298 (data[2] << 8) | data[3];
299 vp_reg_write(ctx, reg_id, val);
300 }
301}
302
303static void vp_default_filter(struct mixer_context *ctx)
304{
305 vp_filter_set(ctx, VP_POLY8_Y0_LL,
306 filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
307 vp_filter_set(ctx, VP_POLY4_Y0_LL,
308 filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
309 vp_filter_set(ctx, VP_POLY4_C0_LL,
310 filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
311}
312
313static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
314 unsigned int pixel_alpha, unsigned int alpha)
315{
316 u32 win_alpha = alpha >> 8;
317 u32 val;
318
319 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
320 switch (pixel_alpha) {
321 case DRM_MODE_BLEND_PIXEL_NONE:
322 break;
323 case DRM_MODE_BLEND_COVERAGE:
324 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
325 break;
326 case DRM_MODE_BLEND_PREMULTI:
327 default:
328 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
329 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
330 break;
331 }
332
333 if (alpha != DRM_BLEND_ALPHA_OPAQUE) {
334 val |= MXR_GRP_CFG_WIN_BLEND_EN;
335 val |= win_alpha;
336 }
337 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
338 val, MXR_GRP_CFG_MISC_MASK);
339}
340
341static void mixer_cfg_vp_blend(struct mixer_context *ctx, unsigned int alpha)
342{
343 u32 win_alpha = alpha >> 8;
344 u32 val = 0;
345
346 if (alpha != DRM_BLEND_ALPHA_OPAQUE) {
347 val |= MXR_VID_CFG_BLEND_EN;
348 val |= win_alpha;
349 }
350 mixer_reg_write(ctx, MXR_VIDEO_CFG, val);
351}
352
353static bool mixer_is_synced(struct mixer_context *ctx)
354{
355 u32 base, shadow;
356
357 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
358 ctx->mxr_ver == MXR_VER_128_0_0_184)
359 return !(mixer_reg_read(ctx, MXR_CFG) &
360 MXR_CFG_LAYER_UPDATE_COUNT_MASK);
361
362 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags) &&
363 vp_reg_read(ctx, VP_SHADOW_UPDATE))
364 return false;
365
366 base = mixer_reg_read(ctx, MXR_CFG);
367 shadow = mixer_reg_read(ctx, MXR_CFG_S);
368 if (base != shadow)
369 return false;
370
371 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(0));
372 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(0));
373 if (base != shadow)
374 return false;
375
376 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(1));
377 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(1));
378 if (base != shadow)
379 return false;
380
381 return true;
382}
383
384static int mixer_wait_for_sync(struct mixer_context *ctx)
385{
386 ktime_t timeout = ktime_add_us(ktime_get(), 100000);
387
388 while (!mixer_is_synced(ctx)) {
389 usleep_range(1000, 2000);
390 if (ktime_compare(ktime_get(), timeout) > 0)
391 return -ETIMEDOUT;
392 }
393 return 0;
394}
395
396static void mixer_disable_sync(struct mixer_context *ctx)
397{
398 mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_SYNC_ENABLE);
399}
400
401static void mixer_enable_sync(struct mixer_context *ctx)
402{
403 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
404 ctx->mxr_ver == MXR_VER_128_0_0_184)
405 mixer_reg_writemask(ctx, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
406 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SYNC_ENABLE);
407 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
408 vp_reg_write(ctx, VP_SHADOW_UPDATE, VP_SHADOW_UPDATE_ENABLE);
409}
410
411static void mixer_cfg_scan(struct mixer_context *ctx, int width, int height)
412{
413 u32 val;
414
415 /* choosing between interlace and progressive mode */
416 val = test_bit(MXR_BIT_INTERLACE, &ctx->flags) ?
417 MXR_CFG_SCAN_INTERLACE : MXR_CFG_SCAN_PROGRESSIVE;
418
419 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
420 mixer_reg_write(ctx, MXR_RESOLUTION,
421 MXR_MXR_RES_HEIGHT(height) | MXR_MXR_RES_WIDTH(width));
422 else
423 val |= ctx->scan_value;
424
425 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_SCAN_MASK);
426}
427
428static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, struct drm_display_mode *mode)
429{
430 enum hdmi_quantization_range range = drm_default_rgb_quant_range(mode);
431 u32 val;
432
433 if (mode->vdisplay < 720) {
434 val = MXR_CFG_RGB601;
435 } else {
436 val = MXR_CFG_RGB709;
437
438 /* Configure the BT.709 CSC matrix for full range RGB. */
439 mixer_reg_write(ctx, MXR_CM_COEFF_Y,
440 MXR_CSC_CT( 0.184, 0.614, 0.063) |
441 MXR_CM_COEFF_RGB_FULL);
442 mixer_reg_write(ctx, MXR_CM_COEFF_CB,
443 MXR_CSC_CT(-0.102, -0.338, 0.440));
444 mixer_reg_write(ctx, MXR_CM_COEFF_CR,
445 MXR_CSC_CT( 0.440, -0.399, -0.040));
446 }
447
448 if (range == HDMI_QUANTIZATION_RANGE_FULL)
449 val |= MXR_CFG_QUANT_RANGE_FULL;
450 else
451 val |= MXR_CFG_QUANT_RANGE_LIMITED;
452
453 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
454}
455
456static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
457 unsigned int priority, bool enable)
458{
459 u32 val = enable ? ~0 : 0;
460
461 switch (win) {
462 case 0:
463 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
464 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
465 MXR_LAYER_CFG_GRP0_VAL(priority),
466 MXR_LAYER_CFG_GRP0_MASK);
467 break;
468 case 1:
469 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
470 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
471 MXR_LAYER_CFG_GRP1_VAL(priority),
472 MXR_LAYER_CFG_GRP1_MASK);
473
474 break;
475 case VP_DEFAULT_WIN:
476 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
477 vp_reg_writemask(ctx, VP_ENABLE, val, VP_ENABLE_ON);
478 mixer_reg_writemask(ctx, MXR_CFG, val,
479 MXR_CFG_VP_ENABLE);
480 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
481 MXR_LAYER_CFG_VP_VAL(priority),
482 MXR_LAYER_CFG_VP_MASK);
483 }
484 break;
485 }
486}
487
488static void mixer_run(struct mixer_context *ctx)
489{
490 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
491}
492
493static void mixer_stop(struct mixer_context *ctx)
494{
495 int timeout = 20;
496
497 mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
498
499 while (!(mixer_reg_read(ctx, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
500 --timeout)
501 usleep_range(10000, 12000);
502}
503
504static void mixer_commit(struct mixer_context *ctx)
505{
506 struct drm_display_mode *mode = &ctx->crtc->base.state->adjusted_mode;
507
508 mixer_cfg_scan(ctx, mode->hdisplay, mode->vdisplay);
509 mixer_cfg_rgb_fmt(ctx, mode);
510 mixer_run(ctx);
511}
512
513static void vp_video_buffer(struct mixer_context *ctx,
514 struct exynos_drm_plane *plane)
515{
516 struct exynos_drm_plane_state *state =
517 to_exynos_plane_state(plane->base.state);
518 struct drm_framebuffer *fb = state->base.fb;
519 unsigned int priority = state->base.normalized_zpos + 1;
520 unsigned long flags;
521 dma_addr_t luma_addr[2], chroma_addr[2];
522 bool is_tiled, is_nv21;
523 u32 val;
524
525 is_nv21 = (fb->format->format == DRM_FORMAT_NV21);
526 is_tiled = (fb->modifier == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE);
527
528 luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0);
529 chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1);
530
531 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
532 if (is_tiled) {
533 luma_addr[1] = luma_addr[0] + 0x40;
534 chroma_addr[1] = chroma_addr[0] + 0x40;
535 } else {
536 luma_addr[1] = luma_addr[0] + fb->pitches[0];
537 chroma_addr[1] = chroma_addr[0] + fb->pitches[1];
538 }
539 } else {
540 luma_addr[1] = 0;
541 chroma_addr[1] = 0;
542 }
543
544 spin_lock_irqsave(&ctx->reg_slock, flags);
545
546 /* interlace or progressive scan mode */
547 val = (test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? ~0 : 0);
548 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_LINE_SKIP);
549
550 /* setup format */
551 val = (is_nv21 ? VP_MODE_NV21 : VP_MODE_NV12);
552 val |= (is_tiled ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
553 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_FMT_MASK);
554
555 /* setting size of input image */
556 vp_reg_write(ctx, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
557 VP_IMG_VSIZE(fb->height));
558 /* chroma plane for NV12/NV21 is half the height of the luma plane */
559 vp_reg_write(ctx, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[1]) |
560 VP_IMG_VSIZE(fb->height / 2));
561
562 vp_reg_write(ctx, VP_SRC_WIDTH, state->src.w);
563 vp_reg_write(ctx, VP_SRC_H_POSITION,
564 VP_SRC_H_POSITION_VAL(state->src.x));
565 vp_reg_write(ctx, VP_DST_WIDTH, state->crtc.w);
566 vp_reg_write(ctx, VP_DST_H_POSITION, state->crtc.x);
567
568 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
569 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h / 2);
570 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y / 2);
571 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h / 2);
572 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y / 2);
573 } else {
574 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h);
575 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y);
576 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h);
577 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y);
578 }
579
580 vp_reg_write(ctx, VP_H_RATIO, state->h_ratio);
581 vp_reg_write(ctx, VP_V_RATIO, state->v_ratio);
582
583 vp_reg_write(ctx, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
584
585 /* set buffer address to vp */
586 vp_reg_write(ctx, VP_TOP_Y_PTR, luma_addr[0]);
587 vp_reg_write(ctx, VP_BOT_Y_PTR, luma_addr[1]);
588 vp_reg_write(ctx, VP_TOP_C_PTR, chroma_addr[0]);
589 vp_reg_write(ctx, VP_BOT_C_PTR, chroma_addr[1]);
590
591 mixer_cfg_layer(ctx, plane->index, priority, true);
592 mixer_cfg_vp_blend(ctx, state->base.alpha);
593
594 spin_unlock_irqrestore(&ctx->reg_slock, flags);
595
596 mixer_regs_dump(ctx);
597 vp_regs_dump(ctx);
598}
599
600static void mixer_graph_buffer(struct mixer_context *ctx,
601 struct exynos_drm_plane *plane)
602{
603 struct exynos_drm_plane_state *state =
604 to_exynos_plane_state(plane->base.state);
605 struct drm_framebuffer *fb = state->base.fb;
606 unsigned int priority = state->base.normalized_zpos + 1;
607 unsigned long flags;
608 unsigned int win = plane->index;
609 unsigned int x_ratio = 0, y_ratio = 0;
610 unsigned int dst_x_offset, dst_y_offset;
611 unsigned int pixel_alpha;
612 dma_addr_t dma_addr;
613 unsigned int fmt;
614 u32 val;
615
616 if (fb->format->has_alpha)
617 pixel_alpha = state->base.pixel_blend_mode;
618 else
619 pixel_alpha = DRM_MODE_BLEND_PIXEL_NONE;
620
621 switch (fb->format->format) {
622 case DRM_FORMAT_XRGB4444:
623 case DRM_FORMAT_ARGB4444:
624 fmt = MXR_FORMAT_ARGB4444;
625 break;
626
627 case DRM_FORMAT_XRGB1555:
628 case DRM_FORMAT_ARGB1555:
629 fmt = MXR_FORMAT_ARGB1555;
630 break;
631
632 case DRM_FORMAT_RGB565:
633 fmt = MXR_FORMAT_RGB565;
634 break;
635
636 case DRM_FORMAT_XRGB8888:
637 case DRM_FORMAT_ARGB8888:
638 default:
639 fmt = MXR_FORMAT_ARGB8888;
640 break;
641 }
642
643 /* ratio is already checked by common plane code */
644 x_ratio = state->h_ratio == (1 << 15);
645 y_ratio = state->v_ratio == (1 << 15);
646
647 dst_x_offset = state->crtc.x;
648 dst_y_offset = state->crtc.y;
649
650 /* translate dma address base s.t. the source image offset is zero */
651 dma_addr = exynos_drm_fb_dma_addr(fb, 0)
652 + (state->src.x * fb->format->cpp[0])
653 + (state->src.y * fb->pitches[0]);
654
655 spin_lock_irqsave(&ctx->reg_slock, flags);
656
657 /* setup format */
658 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
659 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
660
661 /* setup geometry */
662 mixer_reg_write(ctx, MXR_GRAPHIC_SPAN(win),
663 fb->pitches[0] / fb->format->cpp[0]);
664
665 val = MXR_GRP_WH_WIDTH(state->src.w);
666 val |= MXR_GRP_WH_HEIGHT(state->src.h);
667 val |= MXR_GRP_WH_H_SCALE(x_ratio);
668 val |= MXR_GRP_WH_V_SCALE(y_ratio);
669 mixer_reg_write(ctx, MXR_GRAPHIC_WH(win), val);
670
671 /* setup offsets in display image */
672 val = MXR_GRP_DXY_DX(dst_x_offset);
673 val |= MXR_GRP_DXY_DY(dst_y_offset);
674 mixer_reg_write(ctx, MXR_GRAPHIC_DXY(win), val);
675
676 /* set buffer address to mixer */
677 mixer_reg_write(ctx, MXR_GRAPHIC_BASE(win), dma_addr);
678
679 mixer_cfg_layer(ctx, win, priority, true);
680 mixer_cfg_gfx_blend(ctx, win, pixel_alpha, state->base.alpha);
681
682 spin_unlock_irqrestore(&ctx->reg_slock, flags);
683
684 mixer_regs_dump(ctx);
685}
686
687static void vp_win_reset(struct mixer_context *ctx)
688{
689 unsigned int tries = 100;
690
691 vp_reg_write(ctx, VP_SRESET, VP_SRESET_PROCESSING);
692 while (--tries) {
693 /* waiting until VP_SRESET_PROCESSING is 0 */
694 if (~vp_reg_read(ctx, VP_SRESET) & VP_SRESET_PROCESSING)
695 break;
696 mdelay(10);
697 }
698 WARN(tries == 0, "failed to reset Video Processor\n");
699}
700
701static void mixer_win_reset(struct mixer_context *ctx)
702{
703 unsigned long flags;
704
705 spin_lock_irqsave(&ctx->reg_slock, flags);
706
707 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
708
709 /* set output in RGB888 mode */
710 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
711
712 /* 16 beat burst in DMA */
713 mixer_reg_writemask(ctx, MXR_STATUS, MXR_STATUS_16_BURST,
714 MXR_STATUS_BURST_MASK);
715
716 /* reset default layer priority */
717 mixer_reg_write(ctx, MXR_LAYER_CFG, 0);
718
719 /* set all background colors to RGB (0,0,0) */
720 mixer_reg_write(ctx, MXR_BG_COLOR0, MXR_YCBCR_VAL(0, 128, 128));
721 mixer_reg_write(ctx, MXR_BG_COLOR1, MXR_YCBCR_VAL(0, 128, 128));
722 mixer_reg_write(ctx, MXR_BG_COLOR2, MXR_YCBCR_VAL(0, 128, 128));
723
724 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
725 /* configuration of Video Processor Registers */
726 vp_win_reset(ctx);
727 vp_default_filter(ctx);
728 }
729
730 /* disable all layers */
731 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
732 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
733 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
734 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
735
736 /* set all source image offsets to zero */
737 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(0), 0);
738 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(1), 0);
739
740 spin_unlock_irqrestore(&ctx->reg_slock, flags);
741}
742
743static irqreturn_t mixer_irq_handler(int irq, void *arg)
744{
745 struct mixer_context *ctx = arg;
746 u32 val;
747
748 spin_lock(&ctx->reg_slock);
749
750 /* read interrupt status for handling and clearing flags for VSYNC */
751 val = mixer_reg_read(ctx, MXR_INT_STATUS);
752
753 /* handling VSYNC */
754 if (val & MXR_INT_STATUS_VSYNC) {
755 /* vsync interrupt use different bit for read and clear */
756 val |= MXR_INT_CLEAR_VSYNC;
757 val &= ~MXR_INT_STATUS_VSYNC;
758
759 /* interlace scan need to check shadow register */
760 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)
761 && !mixer_is_synced(ctx))
762 goto out;
763
764 drm_crtc_handle_vblank(&ctx->crtc->base);
765 }
766
767out:
768 /* clear interrupts */
769 mixer_reg_write(ctx, MXR_INT_STATUS, val);
770
771 spin_unlock(&ctx->reg_slock);
772
773 return IRQ_HANDLED;
774}
775
776static int mixer_resources_init(struct mixer_context *mixer_ctx)
777{
778 struct device *dev = &mixer_ctx->pdev->dev;
779 struct resource *res;
780 int ret;
781
782 spin_lock_init(&mixer_ctx->reg_slock);
783
784 mixer_ctx->mixer = devm_clk_get(dev, "mixer");
785 if (IS_ERR(mixer_ctx->mixer)) {
786 dev_err(dev, "failed to get clock 'mixer'\n");
787 return -ENODEV;
788 }
789
790 mixer_ctx->hdmi = devm_clk_get(dev, "hdmi");
791 if (IS_ERR(mixer_ctx->hdmi)) {
792 dev_err(dev, "failed to get clock 'hdmi'\n");
793 return PTR_ERR(mixer_ctx->hdmi);
794 }
795
796 mixer_ctx->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
797 if (IS_ERR(mixer_ctx->sclk_hdmi)) {
798 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
799 return -ENODEV;
800 }
801 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
802 if (res == NULL) {
803 dev_err(dev, "get memory resource failed.\n");
804 return -ENXIO;
805 }
806
807 mixer_ctx->mixer_regs = devm_ioremap(dev, res->start,
808 resource_size(res));
809 if (mixer_ctx->mixer_regs == NULL) {
810 dev_err(dev, "register mapping failed.\n");
811 return -ENXIO;
812 }
813
814 ret = platform_get_irq(mixer_ctx->pdev, 0);
815 if (ret < 0)
816 return ret;
817 mixer_ctx->irq = ret;
818
819 ret = devm_request_irq(dev, mixer_ctx->irq, mixer_irq_handler,
820 0, "drm_mixer", mixer_ctx);
821 if (ret) {
822 dev_err(dev, "request interrupt failed.\n");
823 return ret;
824 }
825
826 return 0;
827}
828
829static int vp_resources_init(struct mixer_context *mixer_ctx)
830{
831 struct device *dev = &mixer_ctx->pdev->dev;
832 struct resource *res;
833
834 mixer_ctx->vp = devm_clk_get(dev, "vp");
835 if (IS_ERR(mixer_ctx->vp)) {
836 dev_err(dev, "failed to get clock 'vp'\n");
837 return -ENODEV;
838 }
839
840 if (test_bit(MXR_BIT_HAS_SCLK, &mixer_ctx->flags)) {
841 mixer_ctx->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
842 if (IS_ERR(mixer_ctx->sclk_mixer)) {
843 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
844 return -ENODEV;
845 }
846 mixer_ctx->mout_mixer = devm_clk_get(dev, "mout_mixer");
847 if (IS_ERR(mixer_ctx->mout_mixer)) {
848 dev_err(dev, "failed to get clock 'mout_mixer'\n");
849 return -ENODEV;
850 }
851
852 if (mixer_ctx->sclk_hdmi && mixer_ctx->mout_mixer)
853 clk_set_parent(mixer_ctx->mout_mixer,
854 mixer_ctx->sclk_hdmi);
855 }
856
857 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
858 if (res == NULL) {
859 dev_err(dev, "get memory resource failed.\n");
860 return -ENXIO;
861 }
862
863 mixer_ctx->vp_regs = devm_ioremap(dev, res->start,
864 resource_size(res));
865 if (mixer_ctx->vp_regs == NULL) {
866 dev_err(dev, "register mapping failed.\n");
867 return -ENXIO;
868 }
869
870 return 0;
871}
872
873static int mixer_initialize(struct mixer_context *mixer_ctx,
874 struct drm_device *drm_dev)
875{
876 int ret;
877
878 mixer_ctx->drm_dev = drm_dev;
879
880 /* acquire resources: regs, irqs, clocks */
881 ret = mixer_resources_init(mixer_ctx);
882 if (ret) {
883 DRM_DEV_ERROR(mixer_ctx->dev,
884 "mixer_resources_init failed ret=%d\n", ret);
885 return ret;
886 }
887
888 if (test_bit(MXR_BIT_VP_ENABLED, &mixer_ctx->flags)) {
889 /* acquire vp resources: regs, irqs, clocks */
890 ret = vp_resources_init(mixer_ctx);
891 if (ret) {
892 DRM_DEV_ERROR(mixer_ctx->dev,
893 "vp_resources_init failed ret=%d\n", ret);
894 return ret;
895 }
896 }
897
898 return exynos_drm_register_dma(drm_dev, mixer_ctx->dev,
899 &mixer_ctx->dma_priv);
900}
901
902static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
903{
904 exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev,
905 &mixer_ctx->dma_priv);
906}
907
908static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
909{
910 struct mixer_context *mixer_ctx = crtc->ctx;
911
912 __set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
913 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
914 return 0;
915
916 /* enable vsync interrupt */
917 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
918 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
919
920 return 0;
921}
922
923static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
924{
925 struct mixer_context *mixer_ctx = crtc->ctx;
926
927 __clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
928
929 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
930 return;
931
932 /* disable vsync interrupt */
933 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
934 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
935}
936
937static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
938{
939 struct mixer_context *ctx = crtc->ctx;
940
941 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
942 return;
943
944 if (mixer_wait_for_sync(ctx))
945 dev_err(ctx->dev, "timeout waiting for VSYNC\n");
946 mixer_disable_sync(ctx);
947}
948
949static void mixer_update_plane(struct exynos_drm_crtc *crtc,
950 struct exynos_drm_plane *plane)
951{
952 struct mixer_context *mixer_ctx = crtc->ctx;
953
954 DRM_DEV_DEBUG_KMS(mixer_ctx->dev, "win: %d\n", plane->index);
955
956 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
957 return;
958
959 if (plane->index == VP_DEFAULT_WIN)
960 vp_video_buffer(mixer_ctx, plane);
961 else
962 mixer_graph_buffer(mixer_ctx, plane);
963}
964
965static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
966 struct exynos_drm_plane *plane)
967{
968 struct mixer_context *mixer_ctx = crtc->ctx;
969 unsigned long flags;
970
971 DRM_DEV_DEBUG_KMS(mixer_ctx->dev, "win: %d\n", plane->index);
972
973 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
974 return;
975
976 spin_lock_irqsave(&mixer_ctx->reg_slock, flags);
977 mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
978 spin_unlock_irqrestore(&mixer_ctx->reg_slock, flags);
979}
980
981static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
982{
983 struct mixer_context *mixer_ctx = crtc->ctx;
984
985 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
986 return;
987
988 mixer_enable_sync(mixer_ctx);
989 exynos_crtc_handle_event(crtc);
990}
991
992static void mixer_atomic_enable(struct exynos_drm_crtc *crtc)
993{
994 struct mixer_context *ctx = crtc->ctx;
995 int ret;
996
997 if (test_bit(MXR_BIT_POWERED, &ctx->flags))
998 return;
999
1000 ret = pm_runtime_resume_and_get(ctx->dev);
1001 if (ret < 0) {
1002 dev_err(ctx->dev, "failed to enable MIXER device.\n");
1003 return;
1004 }
1005
1006 exynos_drm_pipe_clk_enable(crtc, true);
1007
1008 mixer_disable_sync(ctx);
1009
1010 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
1011
1012 if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
1013 mixer_reg_writemask(ctx, MXR_INT_STATUS, ~0,
1014 MXR_INT_CLEAR_VSYNC);
1015 mixer_reg_writemask(ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
1016 }
1017 mixer_win_reset(ctx);
1018
1019 mixer_commit(ctx);
1020
1021 mixer_enable_sync(ctx);
1022
1023 set_bit(MXR_BIT_POWERED, &ctx->flags);
1024}
1025
1026static void mixer_atomic_disable(struct exynos_drm_crtc *crtc)
1027{
1028 struct mixer_context *ctx = crtc->ctx;
1029 int i;
1030
1031 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
1032 return;
1033
1034 mixer_stop(ctx);
1035 mixer_regs_dump(ctx);
1036
1037 for (i = 0; i < MIXER_WIN_NR; i++)
1038 mixer_disable_plane(crtc, &ctx->planes[i]);
1039
1040 exynos_drm_pipe_clk_enable(crtc, false);
1041
1042 pm_runtime_put(ctx->dev);
1043
1044 clear_bit(MXR_BIT_POWERED, &ctx->flags);
1045}
1046
1047static enum drm_mode_status mixer_mode_valid(struct exynos_drm_crtc *crtc,
1048 const struct drm_display_mode *mode)
1049{
1050 struct mixer_context *ctx = crtc->ctx;
1051 u32 w = mode->hdisplay, h = mode->vdisplay;
1052
1053 DRM_DEV_DEBUG_KMS(ctx->dev, "xres=%d, yres=%d, refresh=%d, intl=%d\n",
1054 w, h, drm_mode_vrefresh(mode),
1055 !!(mode->flags & DRM_MODE_FLAG_INTERLACE));
1056
1057 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1058 return MODE_OK;
1059
1060 if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1061 (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1062 (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1063 return MODE_OK;
1064
1065 if ((w == 1024 && h == 768) ||
1066 (w == 1366 && h == 768) ||
1067 (w == 1280 && h == 1024))
1068 return MODE_OK;
1069
1070 return MODE_BAD;
1071}
1072
1073static bool mixer_mode_fixup(struct exynos_drm_crtc *crtc,
1074 const struct drm_display_mode *mode,
1075 struct drm_display_mode *adjusted_mode)
1076{
1077 struct mixer_context *ctx = crtc->ctx;
1078 int width = mode->hdisplay, height = mode->vdisplay, i;
1079
1080 static const struct {
1081 int hdisplay, vdisplay, htotal, vtotal, scan_val;
1082 } modes[] = {
1083 { 720, 480, 858, 525, MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD },
1084 { 720, 576, 864, 625, MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD },
1085 { 1280, 720, 1650, 750, MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD },
1086 { 1920, 1080, 2200, 1125, MXR_CFG_SCAN_HD_1080 |
1087 MXR_CFG_SCAN_HD }
1088 };
1089
1090 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
1091 __set_bit(MXR_BIT_INTERLACE, &ctx->flags);
1092 else
1093 __clear_bit(MXR_BIT_INTERLACE, &ctx->flags);
1094
1095 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1096 return true;
1097
1098 for (i = 0; i < ARRAY_SIZE(modes); ++i)
1099 if (width <= modes[i].hdisplay && height <= modes[i].vdisplay) {
1100 ctx->scan_value = modes[i].scan_val;
1101 if (width < modes[i].hdisplay ||
1102 height < modes[i].vdisplay) {
1103 adjusted_mode->hdisplay = modes[i].hdisplay;
1104 adjusted_mode->hsync_start = modes[i].hdisplay;
1105 adjusted_mode->hsync_end = modes[i].htotal;
1106 adjusted_mode->htotal = modes[i].htotal;
1107 adjusted_mode->vdisplay = modes[i].vdisplay;
1108 adjusted_mode->vsync_start = modes[i].vdisplay;
1109 adjusted_mode->vsync_end = modes[i].vtotal;
1110 adjusted_mode->vtotal = modes[i].vtotal;
1111 }
1112
1113 return true;
1114 }
1115
1116 return false;
1117}
1118
1119static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1120 .atomic_enable = mixer_atomic_enable,
1121 .atomic_disable = mixer_atomic_disable,
1122 .enable_vblank = mixer_enable_vblank,
1123 .disable_vblank = mixer_disable_vblank,
1124 .atomic_begin = mixer_atomic_begin,
1125 .update_plane = mixer_update_plane,
1126 .disable_plane = mixer_disable_plane,
1127 .atomic_flush = mixer_atomic_flush,
1128 .mode_valid = mixer_mode_valid,
1129 .mode_fixup = mixer_mode_fixup,
1130};
1131
1132static const struct mixer_drv_data exynos5420_mxr_drv_data = {
1133 .version = MXR_VER_128_0_0_184,
1134 .is_vp_enabled = 0,
1135};
1136
1137static const struct mixer_drv_data exynos5250_mxr_drv_data = {
1138 .version = MXR_VER_16_0_33_0,
1139 .is_vp_enabled = 0,
1140};
1141
1142static const struct mixer_drv_data exynos4212_mxr_drv_data = {
1143 .version = MXR_VER_0_0_0_16,
1144 .is_vp_enabled = 1,
1145};
1146
1147static const struct mixer_drv_data exynos4210_mxr_drv_data = {
1148 .version = MXR_VER_0_0_0_16,
1149 .is_vp_enabled = 1,
1150 .has_sclk = 1,
1151};
1152
1153static const struct of_device_id mixer_match_types[] = {
1154 {
1155 .compatible = "samsung,exynos4210-mixer",
1156 .data = &exynos4210_mxr_drv_data,
1157 }, {
1158 .compatible = "samsung,exynos4212-mixer",
1159 .data = &exynos4212_mxr_drv_data,
1160 }, {
1161 .compatible = "samsung,exynos5-mixer",
1162 .data = &exynos5250_mxr_drv_data,
1163 }, {
1164 .compatible = "samsung,exynos5250-mixer",
1165 .data = &exynos5250_mxr_drv_data,
1166 }, {
1167 .compatible = "samsung,exynos5420-mixer",
1168 .data = &exynos5420_mxr_drv_data,
1169 }, {
1170 /* end node */
1171 }
1172};
1173MODULE_DEVICE_TABLE(of, mixer_match_types);
1174
1175static int mixer_bind(struct device *dev, struct device *manager, void *data)
1176{
1177 struct mixer_context *ctx = dev_get_drvdata(dev);
1178 struct drm_device *drm_dev = data;
1179 struct exynos_drm_plane *exynos_plane;
1180 unsigned int i;
1181 int ret;
1182
1183 ret = mixer_initialize(ctx, drm_dev);
1184 if (ret)
1185 return ret;
1186
1187 for (i = 0; i < MIXER_WIN_NR; i++) {
1188 if (i == VP_DEFAULT_WIN && !test_bit(MXR_BIT_VP_ENABLED,
1189 &ctx->flags))
1190 continue;
1191
1192 ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1193 &plane_configs[i]);
1194 if (ret)
1195 return ret;
1196 }
1197
1198 exynos_plane = &ctx->planes[DEFAULT_WIN];
1199 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1200 EXYNOS_DISPLAY_TYPE_HDMI, &mixer_crtc_ops, ctx);
1201 if (IS_ERR(ctx->crtc)) {
1202 mixer_ctx_remove(ctx);
1203 ret = PTR_ERR(ctx->crtc);
1204 goto free_ctx;
1205 }
1206
1207 return 0;
1208
1209free_ctx:
1210 devm_kfree(dev, ctx);
1211 return ret;
1212}
1213
1214static void mixer_unbind(struct device *dev, struct device *master, void *data)
1215{
1216 struct mixer_context *ctx = dev_get_drvdata(dev);
1217
1218 mixer_ctx_remove(ctx);
1219}
1220
1221static const struct component_ops mixer_component_ops = {
1222 .bind = mixer_bind,
1223 .unbind = mixer_unbind,
1224};
1225
1226static int mixer_probe(struct platform_device *pdev)
1227{
1228 struct device *dev = &pdev->dev;
1229 const struct mixer_drv_data *drv;
1230 struct mixer_context *ctx;
1231 int ret;
1232
1233 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1234 if (!ctx) {
1235 DRM_DEV_ERROR(dev, "failed to alloc mixer context.\n");
1236 return -ENOMEM;
1237 }
1238
1239 drv = of_device_get_match_data(dev);
1240
1241 ctx->pdev = pdev;
1242 ctx->dev = dev;
1243 ctx->mxr_ver = drv->version;
1244
1245 if (drv->is_vp_enabled)
1246 __set_bit(MXR_BIT_VP_ENABLED, &ctx->flags);
1247 if (drv->has_sclk)
1248 __set_bit(MXR_BIT_HAS_SCLK, &ctx->flags);
1249
1250 platform_set_drvdata(pdev, ctx);
1251
1252 pm_runtime_enable(dev);
1253
1254 ret = component_add(&pdev->dev, &mixer_component_ops);
1255 if (ret)
1256 pm_runtime_disable(dev);
1257
1258 return ret;
1259}
1260
1261static void mixer_remove(struct platform_device *pdev)
1262{
1263 pm_runtime_disable(&pdev->dev);
1264
1265 component_del(&pdev->dev, &mixer_component_ops);
1266}
1267
1268static int __maybe_unused exynos_mixer_suspend(struct device *dev)
1269{
1270 struct mixer_context *ctx = dev_get_drvdata(dev);
1271
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);
1278 }
1279
1280 return 0;
1281}
1282
1283static int __maybe_unused exynos_mixer_resume(struct device *dev)
1284{
1285 struct mixer_context *ctx = dev_get_drvdata(dev);
1286 int ret;
1287
1288 ret = clk_prepare_enable(ctx->mixer);
1289 if (ret < 0) {
1290 DRM_DEV_ERROR(ctx->dev,
1291 "Failed to prepare_enable the mixer clk [%d]\n",
1292 ret);
1293 return ret;
1294 }
1295 ret = clk_prepare_enable(ctx->hdmi);
1296 if (ret < 0) {
1297 DRM_DEV_ERROR(dev,
1298 "Failed to prepare_enable the hdmi clk [%d]\n",
1299 ret);
1300 return ret;
1301 }
1302 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1303 ret = clk_prepare_enable(ctx->vp);
1304 if (ret < 0) {
1305 DRM_DEV_ERROR(dev,
1306 "Failed to prepare_enable the vp clk [%d]\n",
1307 ret);
1308 return ret;
1309 }
1310 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags)) {
1311 ret = clk_prepare_enable(ctx->sclk_mixer);
1312 if (ret < 0) {
1313 DRM_DEV_ERROR(dev,
1314 "Failed to prepare_enable the " \
1315 "sclk_mixer clk [%d]\n",
1316 ret);
1317 return ret;
1318 }
1319 }
1320 }
1321
1322 return 0;
1323}
1324
1325static 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)
1329};
1330
1331struct platform_driver mixer_driver = {
1332 .driver = {
1333 .name = "exynos-mixer",
1334 .owner = THIS_MODULE,
1335 .pm = &exynos_mixer_pm_ops,
1336 .of_match_table = mixer_match_types,
1337 },
1338 .probe = mixer_probe,
1339 .remove_new = mixer_remove,
1340};
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (C) 2011 Samsung Electronics Co.Ltd
4 * Authors:
5 * Seung-Woo Kim <sw0312.kim@samsung.com>
6 * Inki Dae <inki.dae@samsung.com>
7 * Joonyoung Shim <jy0922.shim@samsung.com>
8 *
9 * Based on drivers/media/video/s5p-tv/mixer_reg.c
10 */
11
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>
20#include <linux/of.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>
27
28#include <drm/drm_blend.h>
29#include <drm/drm_edid.h>
30#include <drm/drm_fourcc.h>
31#include <drm/drm_framebuffer.h>
32#include <drm/drm_vblank.h>
33#include <drm/exynos_drm.h>
34
35#include "exynos_drm_crtc.h"
36#include "exynos_drm_drv.h"
37#include "exynos_drm_fb.h"
38#include "exynos_drm_plane.h"
39#include "regs-mixer.h"
40#include "regs-vp.h"
41
42#define MIXER_WIN_NR 3
43#define VP_DEFAULT_WIN 2
44
45/*
46 * Mixer color space conversion coefficient triplet.
47 * Used for CSC from RGB to YCbCr.
48 * Each coefficient is a 10-bit fixed point number with
49 * sign and no integer part, i.e.
50 * [0:8] = fractional part (representing a value y = x / 2^9)
51 * [9] = sign
52 * Negative values are encoded with two's complement.
53 */
54#define MXR_CSC_C(x) ((int)((x) * 512.0) & 0x3ff)
55#define MXR_CSC_CT(a0, a1, a2) \
56 ((MXR_CSC_C(a0) << 20) | (MXR_CSC_C(a1) << 10) | (MXR_CSC_C(a2) << 0))
57
58/* YCbCr value, used for mixer background color configuration. */
59#define MXR_YCBCR_VAL(y, cb, cr) (((y) << 16) | ((cb) << 8) | ((cr) << 0))
60
61/* The pixelformats that are natively supported by the mixer. */
62#define MXR_FORMAT_RGB565 4
63#define MXR_FORMAT_ARGB1555 5
64#define MXR_FORMAT_ARGB4444 6
65#define MXR_FORMAT_ARGB8888 7
66
67enum mixer_version_id {
68 MXR_VER_0_0_0_16,
69 MXR_VER_16_0_33_0,
70 MXR_VER_128_0_0_184,
71};
72
73enum mixer_flag_bits {
74 MXR_BIT_POWERED,
75 MXR_BIT_VSYNC,
76 MXR_BIT_INTERLACE,
77 MXR_BIT_VP_ENABLED,
78 MXR_BIT_HAS_SCLK,
79};
80
81static const uint32_t mixer_formats[] = {
82 DRM_FORMAT_XRGB4444,
83 DRM_FORMAT_ARGB4444,
84 DRM_FORMAT_XRGB1555,
85 DRM_FORMAT_ARGB1555,
86 DRM_FORMAT_RGB565,
87 DRM_FORMAT_XRGB8888,
88 DRM_FORMAT_ARGB8888,
89};
90
91static const uint32_t vp_formats[] = {
92 DRM_FORMAT_NV12,
93 DRM_FORMAT_NV21,
94};
95
96struct mixer_context {
97 struct platform_device *pdev;
98 struct device *dev;
99 struct drm_device *drm_dev;
100 void *dma_priv;
101 struct exynos_drm_crtc *crtc;
102 struct exynos_drm_plane planes[MIXER_WIN_NR];
103 unsigned long flags;
104
105 int irq;
106 void __iomem *mixer_regs;
107 void __iomem *vp_regs;
108 spinlock_t reg_slock;
109 struct clk *mixer;
110 struct clk *vp;
111 struct clk *hdmi;
112 struct clk *sclk_mixer;
113 struct clk *sclk_hdmi;
114 struct clk *mout_mixer;
115 enum mixer_version_id mxr_ver;
116 int scan_value;
117};
118
119struct mixer_drv_data {
120 enum mixer_version_id version;
121 bool is_vp_enabled;
122 bool has_sclk;
123};
124
125static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
126 {
127 .zpos = 0,
128 .type = DRM_PLANE_TYPE_PRIMARY,
129 .pixel_formats = mixer_formats,
130 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
131 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
132 EXYNOS_DRM_PLANE_CAP_ZPOS |
133 EXYNOS_DRM_PLANE_CAP_PIX_BLEND |
134 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
135 }, {
136 .zpos = 1,
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 |
142 EXYNOS_DRM_PLANE_CAP_PIX_BLEND |
143 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
144 }, {
145 .zpos = 2,
146 .type = DRM_PLANE_TYPE_OVERLAY,
147 .pixel_formats = vp_formats,
148 .num_pixel_formats = ARRAY_SIZE(vp_formats),
149 .capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
150 EXYNOS_DRM_PLANE_CAP_ZPOS |
151 EXYNOS_DRM_PLANE_CAP_TILE |
152 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
153 },
154};
155
156static const u8 filter_y_horiz_tap8[] = {
157 0, -1, -1, -1, -1, -1, -1, -1,
158 -1, -1, -1, -1, -1, 0, 0, 0,
159 0, 2, 4, 5, 6, 6, 6, 6,
160 6, 5, 5, 4, 3, 2, 1, 1,
161 0, -6, -12, -16, -18, -20, -21, -20,
162 -20, -18, -16, -13, -10, -8, -5, -2,
163 127, 126, 125, 121, 114, 107, 99, 89,
164 79, 68, 57, 46, 35, 25, 16, 8,
165};
166
167static const u8 filter_y_vert_tap4[] = {
168 0, -3, -6, -8, -8, -8, -8, -7,
169 -6, -5, -4, -3, -2, -1, -1, 0,
170 127, 126, 124, 118, 111, 102, 92, 81,
171 70, 59, 48, 37, 27, 19, 11, 5,
172 0, 5, 11, 19, 27, 37, 48, 59,
173 70, 81, 92, 102, 111, 118, 124, 126,
174 0, 0, -1, -1, -2, -3, -4, -5,
175 -6, -7, -8, -8, -8, -8, -6, -3,
176};
177
178static const u8 filter_cr_horiz_tap4[] = {
179 0, -3, -6, -8, -8, -8, -8, -7,
180 -6, -5, -4, -3, -2, -1, -1, 0,
181 127, 126, 124, 118, 111, 102, 92, 81,
182 70, 59, 48, 37, 27, 19, 11, 5,
183};
184
185static inline u32 vp_reg_read(struct mixer_context *ctx, u32 reg_id)
186{
187 return readl(ctx->vp_regs + reg_id);
188}
189
190static inline void vp_reg_write(struct mixer_context *ctx, u32 reg_id,
191 u32 val)
192{
193 writel(val, ctx->vp_regs + reg_id);
194}
195
196static inline void vp_reg_writemask(struct mixer_context *ctx, u32 reg_id,
197 u32 val, u32 mask)
198{
199 u32 old = vp_reg_read(ctx, reg_id);
200
201 val = (val & mask) | (old & ~mask);
202 writel(val, ctx->vp_regs + reg_id);
203}
204
205static inline u32 mixer_reg_read(struct mixer_context *ctx, u32 reg_id)
206{
207 return readl(ctx->mixer_regs + reg_id);
208}
209
210static inline void mixer_reg_write(struct mixer_context *ctx, u32 reg_id,
211 u32 val)
212{
213 writel(val, ctx->mixer_regs + reg_id);
214}
215
216static inline void mixer_reg_writemask(struct mixer_context *ctx,
217 u32 reg_id, u32 val, u32 mask)
218{
219 u32 old = mixer_reg_read(ctx, reg_id);
220
221 val = (val & mask) | (old & ~mask);
222 writel(val, ctx->mixer_regs + reg_id);
223}
224
225static void mixer_regs_dump(struct mixer_context *ctx)
226{
227#define DUMPREG(reg_id) \
228do { \
229 DRM_DEV_DEBUG_KMS(ctx->dev, #reg_id " = %08x\n", \
230 (u32)readl(ctx->mixer_regs + reg_id)); \
231} while (0)
232
233 DUMPREG(MXR_STATUS);
234 DUMPREG(MXR_CFG);
235 DUMPREG(MXR_INT_EN);
236 DUMPREG(MXR_INT_STATUS);
237
238 DUMPREG(MXR_LAYER_CFG);
239 DUMPREG(MXR_VIDEO_CFG);
240
241 DUMPREG(MXR_GRAPHIC0_CFG);
242 DUMPREG(MXR_GRAPHIC0_BASE);
243 DUMPREG(MXR_GRAPHIC0_SPAN);
244 DUMPREG(MXR_GRAPHIC0_WH);
245 DUMPREG(MXR_GRAPHIC0_SXY);
246 DUMPREG(MXR_GRAPHIC0_DXY);
247
248 DUMPREG(MXR_GRAPHIC1_CFG);
249 DUMPREG(MXR_GRAPHIC1_BASE);
250 DUMPREG(MXR_GRAPHIC1_SPAN);
251 DUMPREG(MXR_GRAPHIC1_WH);
252 DUMPREG(MXR_GRAPHIC1_SXY);
253 DUMPREG(MXR_GRAPHIC1_DXY);
254#undef DUMPREG
255}
256
257static void vp_regs_dump(struct mixer_context *ctx)
258{
259#define DUMPREG(reg_id) \
260do { \
261 DRM_DEV_DEBUG_KMS(ctx->dev, #reg_id " = %08x\n", \
262 (u32) readl(ctx->vp_regs + reg_id)); \
263} while (0)
264
265 DUMPREG(VP_ENABLE);
266 DUMPREG(VP_SRESET);
267 DUMPREG(VP_SHADOW_UPDATE);
268 DUMPREG(VP_FIELD_ID);
269 DUMPREG(VP_MODE);
270 DUMPREG(VP_IMG_SIZE_Y);
271 DUMPREG(VP_IMG_SIZE_C);
272 DUMPREG(VP_PER_RATE_CTRL);
273 DUMPREG(VP_TOP_Y_PTR);
274 DUMPREG(VP_BOT_Y_PTR);
275 DUMPREG(VP_TOP_C_PTR);
276 DUMPREG(VP_BOT_C_PTR);
277 DUMPREG(VP_ENDIAN_MODE);
278 DUMPREG(VP_SRC_H_POSITION);
279 DUMPREG(VP_SRC_V_POSITION);
280 DUMPREG(VP_SRC_WIDTH);
281 DUMPREG(VP_SRC_HEIGHT);
282 DUMPREG(VP_DST_H_POSITION);
283 DUMPREG(VP_DST_V_POSITION);
284 DUMPREG(VP_DST_WIDTH);
285 DUMPREG(VP_DST_HEIGHT);
286 DUMPREG(VP_H_RATIO);
287 DUMPREG(VP_V_RATIO);
288
289#undef DUMPREG
290}
291
292static inline void vp_filter_set(struct mixer_context *ctx,
293 int reg_id, const u8 *data, unsigned int size)
294{
295 /* assure 4-byte align */
296 BUG_ON(size & 3);
297 for (; size; size -= 4, reg_id += 4, data += 4) {
298 u32 val = (data[0] << 24) | (data[1] << 16) |
299 (data[2] << 8) | data[3];
300 vp_reg_write(ctx, reg_id, val);
301 }
302}
303
304static void vp_default_filter(struct mixer_context *ctx)
305{
306 vp_filter_set(ctx, VP_POLY8_Y0_LL,
307 filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
308 vp_filter_set(ctx, VP_POLY4_Y0_LL,
309 filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
310 vp_filter_set(ctx, VP_POLY4_C0_LL,
311 filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
312}
313
314static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
315 unsigned int pixel_alpha, unsigned int alpha)
316{
317 u32 win_alpha = alpha >> 8;
318 u32 val;
319
320 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
321 switch (pixel_alpha) {
322 case DRM_MODE_BLEND_PIXEL_NONE:
323 break;
324 case DRM_MODE_BLEND_COVERAGE:
325 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
326 break;
327 case DRM_MODE_BLEND_PREMULTI:
328 default:
329 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
330 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
331 break;
332 }
333
334 if (alpha != DRM_BLEND_ALPHA_OPAQUE) {
335 val |= MXR_GRP_CFG_WIN_BLEND_EN;
336 val |= win_alpha;
337 }
338 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
339 val, MXR_GRP_CFG_MISC_MASK);
340}
341
342static void mixer_cfg_vp_blend(struct mixer_context *ctx, unsigned int alpha)
343{
344 u32 win_alpha = alpha >> 8;
345 u32 val = 0;
346
347 if (alpha != DRM_BLEND_ALPHA_OPAQUE) {
348 val |= MXR_VID_CFG_BLEND_EN;
349 val |= win_alpha;
350 }
351 mixer_reg_write(ctx, MXR_VIDEO_CFG, val);
352}
353
354static bool mixer_is_synced(struct mixer_context *ctx)
355{
356 u32 base, shadow;
357
358 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
359 ctx->mxr_ver == MXR_VER_128_0_0_184)
360 return !(mixer_reg_read(ctx, MXR_CFG) &
361 MXR_CFG_LAYER_UPDATE_COUNT_MASK);
362
363 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags) &&
364 vp_reg_read(ctx, VP_SHADOW_UPDATE))
365 return false;
366
367 base = mixer_reg_read(ctx, MXR_CFG);
368 shadow = mixer_reg_read(ctx, MXR_CFG_S);
369 if (base != shadow)
370 return false;
371
372 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(0));
373 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(0));
374 if (base != shadow)
375 return false;
376
377 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(1));
378 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(1));
379 if (base != shadow)
380 return false;
381
382 return true;
383}
384
385static int mixer_wait_for_sync(struct mixer_context *ctx)
386{
387 ktime_t timeout = ktime_add_us(ktime_get(), 100000);
388
389 while (!mixer_is_synced(ctx)) {
390 usleep_range(1000, 2000);
391 if (ktime_compare(ktime_get(), timeout) > 0)
392 return -ETIMEDOUT;
393 }
394 return 0;
395}
396
397static void mixer_disable_sync(struct mixer_context *ctx)
398{
399 mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_SYNC_ENABLE);
400}
401
402static void mixer_enable_sync(struct mixer_context *ctx)
403{
404 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
405 ctx->mxr_ver == MXR_VER_128_0_0_184)
406 mixer_reg_writemask(ctx, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
407 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SYNC_ENABLE);
408 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
409 vp_reg_write(ctx, VP_SHADOW_UPDATE, VP_SHADOW_UPDATE_ENABLE);
410}
411
412static void mixer_cfg_scan(struct mixer_context *ctx, int width, int height)
413{
414 u32 val;
415
416 /* choosing between interlace and progressive mode */
417 val = test_bit(MXR_BIT_INTERLACE, &ctx->flags) ?
418 MXR_CFG_SCAN_INTERLACE : MXR_CFG_SCAN_PROGRESSIVE;
419
420 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
421 mixer_reg_write(ctx, MXR_RESOLUTION,
422 MXR_MXR_RES_HEIGHT(height) | MXR_MXR_RES_WIDTH(width));
423 else
424 val |= ctx->scan_value;
425
426 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_SCAN_MASK);
427}
428
429static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, struct drm_display_mode *mode)
430{
431 enum hdmi_quantization_range range = drm_default_rgb_quant_range(mode);
432 u32 val;
433
434 if (mode->vdisplay < 720) {
435 val = MXR_CFG_RGB601;
436 } else {
437 val = MXR_CFG_RGB709;
438
439 /* Configure the BT.709 CSC matrix for full range RGB. */
440 mixer_reg_write(ctx, MXR_CM_COEFF_Y,
441 MXR_CSC_CT( 0.184, 0.614, 0.063) |
442 MXR_CM_COEFF_RGB_FULL);
443 mixer_reg_write(ctx, MXR_CM_COEFF_CB,
444 MXR_CSC_CT(-0.102, -0.338, 0.440));
445 mixer_reg_write(ctx, MXR_CM_COEFF_CR,
446 MXR_CSC_CT( 0.440, -0.399, -0.040));
447 }
448
449 if (range == HDMI_QUANTIZATION_RANGE_FULL)
450 val |= MXR_CFG_QUANT_RANGE_FULL;
451 else
452 val |= MXR_CFG_QUANT_RANGE_LIMITED;
453
454 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
455}
456
457static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
458 unsigned int priority, bool enable)
459{
460 u32 val = enable ? ~0 : 0;
461
462 switch (win) {
463 case 0:
464 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
465 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
466 MXR_LAYER_CFG_GRP0_VAL(priority),
467 MXR_LAYER_CFG_GRP0_MASK);
468 break;
469 case 1:
470 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
471 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
472 MXR_LAYER_CFG_GRP1_VAL(priority),
473 MXR_LAYER_CFG_GRP1_MASK);
474
475 break;
476 case VP_DEFAULT_WIN:
477 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
478 vp_reg_writemask(ctx, VP_ENABLE, val, VP_ENABLE_ON);
479 mixer_reg_writemask(ctx, MXR_CFG, val,
480 MXR_CFG_VP_ENABLE);
481 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
482 MXR_LAYER_CFG_VP_VAL(priority),
483 MXR_LAYER_CFG_VP_MASK);
484 }
485 break;
486 }
487}
488
489static void mixer_run(struct mixer_context *ctx)
490{
491 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
492}
493
494static void mixer_stop(struct mixer_context *ctx)
495{
496 int timeout = 20;
497
498 mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
499
500 while (!(mixer_reg_read(ctx, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
501 --timeout)
502 usleep_range(10000, 12000);
503}
504
505static void mixer_commit(struct mixer_context *ctx)
506{
507 struct drm_display_mode *mode = &ctx->crtc->base.state->adjusted_mode;
508
509 mixer_cfg_scan(ctx, mode->hdisplay, mode->vdisplay);
510 mixer_cfg_rgb_fmt(ctx, mode);
511 mixer_run(ctx);
512}
513
514static void vp_video_buffer(struct mixer_context *ctx,
515 struct exynos_drm_plane *plane)
516{
517 struct exynos_drm_plane_state *state =
518 to_exynos_plane_state(plane->base.state);
519 struct drm_framebuffer *fb = state->base.fb;
520 unsigned int priority = state->base.normalized_zpos + 1;
521 unsigned long flags;
522 dma_addr_t luma_addr[2], chroma_addr[2];
523 bool is_tiled, is_nv21;
524 u32 val;
525
526 is_nv21 = (fb->format->format == DRM_FORMAT_NV21);
527 is_tiled = (fb->modifier == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE);
528
529 luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0);
530 chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1);
531
532 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
533 if (is_tiled) {
534 luma_addr[1] = luma_addr[0] + 0x40;
535 chroma_addr[1] = chroma_addr[0] + 0x40;
536 } else {
537 luma_addr[1] = luma_addr[0] + fb->pitches[0];
538 chroma_addr[1] = chroma_addr[0] + fb->pitches[1];
539 }
540 } else {
541 luma_addr[1] = 0;
542 chroma_addr[1] = 0;
543 }
544
545 spin_lock_irqsave(&ctx->reg_slock, flags);
546
547 /* interlace or progressive scan mode */
548 val = (test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? ~0 : 0);
549 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_LINE_SKIP);
550
551 /* setup format */
552 val = (is_nv21 ? VP_MODE_NV21 : VP_MODE_NV12);
553 val |= (is_tiled ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
554 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_FMT_MASK);
555
556 /* setting size of input image */
557 vp_reg_write(ctx, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
558 VP_IMG_VSIZE(fb->height));
559 /* chroma plane for NV12/NV21 is half the height of the luma plane */
560 vp_reg_write(ctx, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[1]) |
561 VP_IMG_VSIZE(fb->height / 2));
562
563 vp_reg_write(ctx, VP_SRC_WIDTH, state->src.w);
564 vp_reg_write(ctx, VP_SRC_H_POSITION,
565 VP_SRC_H_POSITION_VAL(state->src.x));
566 vp_reg_write(ctx, VP_DST_WIDTH, state->crtc.w);
567 vp_reg_write(ctx, VP_DST_H_POSITION, state->crtc.x);
568
569 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
570 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h / 2);
571 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y / 2);
572 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h / 2);
573 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y / 2);
574 } else {
575 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h);
576 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y);
577 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h);
578 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y);
579 }
580
581 vp_reg_write(ctx, VP_H_RATIO, state->h_ratio);
582 vp_reg_write(ctx, VP_V_RATIO, state->v_ratio);
583
584 vp_reg_write(ctx, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
585
586 /* set buffer address to vp */
587 vp_reg_write(ctx, VP_TOP_Y_PTR, luma_addr[0]);
588 vp_reg_write(ctx, VP_BOT_Y_PTR, luma_addr[1]);
589 vp_reg_write(ctx, VP_TOP_C_PTR, chroma_addr[0]);
590 vp_reg_write(ctx, VP_BOT_C_PTR, chroma_addr[1]);
591
592 mixer_cfg_layer(ctx, plane->index, priority, true);
593 mixer_cfg_vp_blend(ctx, state->base.alpha);
594
595 spin_unlock_irqrestore(&ctx->reg_slock, flags);
596
597 mixer_regs_dump(ctx);
598 vp_regs_dump(ctx);
599}
600
601static void mixer_graph_buffer(struct mixer_context *ctx,
602 struct exynos_drm_plane *plane)
603{
604 struct exynos_drm_plane_state *state =
605 to_exynos_plane_state(plane->base.state);
606 struct drm_framebuffer *fb = state->base.fb;
607 unsigned int priority = state->base.normalized_zpos + 1;
608 unsigned long flags;
609 unsigned int win = plane->index;
610 unsigned int x_ratio = 0, y_ratio = 0;
611 unsigned int dst_x_offset, dst_y_offset;
612 unsigned int pixel_alpha;
613 dma_addr_t dma_addr;
614 unsigned int fmt;
615 u32 val;
616
617 if (fb->format->has_alpha)
618 pixel_alpha = state->base.pixel_blend_mode;
619 else
620 pixel_alpha = DRM_MODE_BLEND_PIXEL_NONE;
621
622 switch (fb->format->format) {
623 case DRM_FORMAT_XRGB4444:
624 case DRM_FORMAT_ARGB4444:
625 fmt = MXR_FORMAT_ARGB4444;
626 break;
627
628 case DRM_FORMAT_XRGB1555:
629 case DRM_FORMAT_ARGB1555:
630 fmt = MXR_FORMAT_ARGB1555;
631 break;
632
633 case DRM_FORMAT_RGB565:
634 fmt = MXR_FORMAT_RGB565;
635 break;
636
637 case DRM_FORMAT_XRGB8888:
638 case DRM_FORMAT_ARGB8888:
639 default:
640 fmt = MXR_FORMAT_ARGB8888;
641 break;
642 }
643
644 /* ratio is already checked by common plane code */
645 x_ratio = state->h_ratio == (1 << 15);
646 y_ratio = state->v_ratio == (1 << 15);
647
648 dst_x_offset = state->crtc.x;
649 dst_y_offset = state->crtc.y;
650
651 /* translate dma address base s.t. the source image offset is zero */
652 dma_addr = exynos_drm_fb_dma_addr(fb, 0)
653 + (state->src.x * fb->format->cpp[0])
654 + (state->src.y * fb->pitches[0]);
655
656 spin_lock_irqsave(&ctx->reg_slock, flags);
657
658 /* setup format */
659 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
660 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
661
662 /* setup geometry */
663 mixer_reg_write(ctx, MXR_GRAPHIC_SPAN(win),
664 fb->pitches[0] / fb->format->cpp[0]);
665
666 val = MXR_GRP_WH_WIDTH(state->src.w);
667 val |= MXR_GRP_WH_HEIGHT(state->src.h);
668 val |= MXR_GRP_WH_H_SCALE(x_ratio);
669 val |= MXR_GRP_WH_V_SCALE(y_ratio);
670 mixer_reg_write(ctx, MXR_GRAPHIC_WH(win), val);
671
672 /* setup offsets in display image */
673 val = MXR_GRP_DXY_DX(dst_x_offset);
674 val |= MXR_GRP_DXY_DY(dst_y_offset);
675 mixer_reg_write(ctx, MXR_GRAPHIC_DXY(win), val);
676
677 /* set buffer address to mixer */
678 mixer_reg_write(ctx, MXR_GRAPHIC_BASE(win), dma_addr);
679
680 mixer_cfg_layer(ctx, win, priority, true);
681 mixer_cfg_gfx_blend(ctx, win, pixel_alpha, state->base.alpha);
682
683 spin_unlock_irqrestore(&ctx->reg_slock, flags);
684
685 mixer_regs_dump(ctx);
686}
687
688static void vp_win_reset(struct mixer_context *ctx)
689{
690 unsigned int tries = 100;
691
692 vp_reg_write(ctx, VP_SRESET, VP_SRESET_PROCESSING);
693 while (--tries) {
694 /* waiting until VP_SRESET_PROCESSING is 0 */
695 if (~vp_reg_read(ctx, VP_SRESET) & VP_SRESET_PROCESSING)
696 break;
697 mdelay(10);
698 }
699 WARN(tries == 0, "failed to reset Video Processor\n");
700}
701
702static void mixer_win_reset(struct mixer_context *ctx)
703{
704 unsigned long flags;
705
706 spin_lock_irqsave(&ctx->reg_slock, flags);
707
708 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
709
710 /* set output in RGB888 mode */
711 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
712
713 /* 16 beat burst in DMA */
714 mixer_reg_writemask(ctx, MXR_STATUS, MXR_STATUS_16_BURST,
715 MXR_STATUS_BURST_MASK);
716
717 /* reset default layer priority */
718 mixer_reg_write(ctx, MXR_LAYER_CFG, 0);
719
720 /* set all background colors to RGB (0,0,0) */
721 mixer_reg_write(ctx, MXR_BG_COLOR0, MXR_YCBCR_VAL(0, 128, 128));
722 mixer_reg_write(ctx, MXR_BG_COLOR1, MXR_YCBCR_VAL(0, 128, 128));
723 mixer_reg_write(ctx, MXR_BG_COLOR2, MXR_YCBCR_VAL(0, 128, 128));
724
725 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
726 /* configuration of Video Processor Registers */
727 vp_win_reset(ctx);
728 vp_default_filter(ctx);
729 }
730
731 /* disable all layers */
732 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
733 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
734 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
735 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
736
737 /* set all source image offsets to zero */
738 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(0), 0);
739 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(1), 0);
740
741 spin_unlock_irqrestore(&ctx->reg_slock, flags);
742}
743
744static irqreturn_t mixer_irq_handler(int irq, void *arg)
745{
746 struct mixer_context *ctx = arg;
747 u32 val;
748
749 spin_lock(&ctx->reg_slock);
750
751 /* read interrupt status for handling and clearing flags for VSYNC */
752 val = mixer_reg_read(ctx, MXR_INT_STATUS);
753
754 /* handling VSYNC */
755 if (val & MXR_INT_STATUS_VSYNC) {
756 /* vsync interrupt use different bit for read and clear */
757 val |= MXR_INT_CLEAR_VSYNC;
758 val &= ~MXR_INT_STATUS_VSYNC;
759
760 /* interlace scan need to check shadow register */
761 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)
762 && !mixer_is_synced(ctx))
763 goto out;
764
765 drm_crtc_handle_vblank(&ctx->crtc->base);
766 }
767
768out:
769 /* clear interrupts */
770 mixer_reg_write(ctx, MXR_INT_STATUS, val);
771
772 spin_unlock(&ctx->reg_slock);
773
774 return IRQ_HANDLED;
775}
776
777static int mixer_resources_init(struct mixer_context *mixer_ctx)
778{
779 struct device *dev = &mixer_ctx->pdev->dev;
780 struct resource *res;
781 int ret;
782
783 spin_lock_init(&mixer_ctx->reg_slock);
784
785 mixer_ctx->mixer = devm_clk_get(dev, "mixer");
786 if (IS_ERR(mixer_ctx->mixer)) {
787 dev_err(dev, "failed to get clock 'mixer'\n");
788 return -ENODEV;
789 }
790
791 mixer_ctx->hdmi = devm_clk_get(dev, "hdmi");
792 if (IS_ERR(mixer_ctx->hdmi)) {
793 dev_err(dev, "failed to get clock 'hdmi'\n");
794 return PTR_ERR(mixer_ctx->hdmi);
795 }
796
797 mixer_ctx->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
798 if (IS_ERR(mixer_ctx->sclk_hdmi)) {
799 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
800 return -ENODEV;
801 }
802 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
803 if (res == NULL) {
804 dev_err(dev, "get memory resource failed.\n");
805 return -ENXIO;
806 }
807
808 mixer_ctx->mixer_regs = devm_ioremap(dev, res->start,
809 resource_size(res));
810 if (mixer_ctx->mixer_regs == NULL) {
811 dev_err(dev, "register mapping failed.\n");
812 return -ENXIO;
813 }
814
815 ret = platform_get_irq(mixer_ctx->pdev, 0);
816 if (ret < 0)
817 return ret;
818 mixer_ctx->irq = ret;
819
820 ret = devm_request_irq(dev, mixer_ctx->irq, mixer_irq_handler,
821 0, "drm_mixer", mixer_ctx);
822 if (ret) {
823 dev_err(dev, "request interrupt failed.\n");
824 return ret;
825 }
826
827 return 0;
828}
829
830static int vp_resources_init(struct mixer_context *mixer_ctx)
831{
832 struct device *dev = &mixer_ctx->pdev->dev;
833 struct resource *res;
834
835 mixer_ctx->vp = devm_clk_get(dev, "vp");
836 if (IS_ERR(mixer_ctx->vp)) {
837 dev_err(dev, "failed to get clock 'vp'\n");
838 return -ENODEV;
839 }
840
841 if (test_bit(MXR_BIT_HAS_SCLK, &mixer_ctx->flags)) {
842 mixer_ctx->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
843 if (IS_ERR(mixer_ctx->sclk_mixer)) {
844 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
845 return -ENODEV;
846 }
847 mixer_ctx->mout_mixer = devm_clk_get(dev, "mout_mixer");
848 if (IS_ERR(mixer_ctx->mout_mixer)) {
849 dev_err(dev, "failed to get clock 'mout_mixer'\n");
850 return -ENODEV;
851 }
852
853 if (mixer_ctx->sclk_hdmi && mixer_ctx->mout_mixer)
854 clk_set_parent(mixer_ctx->mout_mixer,
855 mixer_ctx->sclk_hdmi);
856 }
857
858 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
859 if (res == NULL) {
860 dev_err(dev, "get memory resource failed.\n");
861 return -ENXIO;
862 }
863
864 mixer_ctx->vp_regs = devm_ioremap(dev, res->start,
865 resource_size(res));
866 if (mixer_ctx->vp_regs == NULL) {
867 dev_err(dev, "register mapping failed.\n");
868 return -ENXIO;
869 }
870
871 return 0;
872}
873
874static int mixer_initialize(struct mixer_context *mixer_ctx,
875 struct drm_device *drm_dev)
876{
877 int ret;
878
879 mixer_ctx->drm_dev = drm_dev;
880
881 /* acquire resources: regs, irqs, clocks */
882 ret = mixer_resources_init(mixer_ctx);
883 if (ret) {
884 DRM_DEV_ERROR(mixer_ctx->dev,
885 "mixer_resources_init failed ret=%d\n", ret);
886 return ret;
887 }
888
889 if (test_bit(MXR_BIT_VP_ENABLED, &mixer_ctx->flags)) {
890 /* acquire vp resources: regs, irqs, clocks */
891 ret = vp_resources_init(mixer_ctx);
892 if (ret) {
893 DRM_DEV_ERROR(mixer_ctx->dev,
894 "vp_resources_init failed ret=%d\n", ret);
895 return ret;
896 }
897 }
898
899 return exynos_drm_register_dma(drm_dev, mixer_ctx->dev,
900 &mixer_ctx->dma_priv);
901}
902
903static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
904{
905 exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev,
906 &mixer_ctx->dma_priv);
907}
908
909static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
910{
911 struct mixer_context *mixer_ctx = crtc->ctx;
912
913 __set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
914 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
915 return 0;
916
917 /* enable vsync interrupt */
918 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
919 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
920
921 return 0;
922}
923
924static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
925{
926 struct mixer_context *mixer_ctx = crtc->ctx;
927
928 __clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
929
930 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
931 return;
932
933 /* disable vsync interrupt */
934 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
935 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
936}
937
938static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
939{
940 struct mixer_context *ctx = crtc->ctx;
941
942 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
943 return;
944
945 if (mixer_wait_for_sync(ctx))
946 dev_err(ctx->dev, "timeout waiting for VSYNC\n");
947 mixer_disable_sync(ctx);
948}
949
950static void mixer_update_plane(struct exynos_drm_crtc *crtc,
951 struct exynos_drm_plane *plane)
952{
953 struct mixer_context *mixer_ctx = crtc->ctx;
954
955 DRM_DEV_DEBUG_KMS(mixer_ctx->dev, "win: %d\n", plane->index);
956
957 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
958 return;
959
960 if (plane->index == VP_DEFAULT_WIN)
961 vp_video_buffer(mixer_ctx, plane);
962 else
963 mixer_graph_buffer(mixer_ctx, plane);
964}
965
966static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
967 struct exynos_drm_plane *plane)
968{
969 struct mixer_context *mixer_ctx = crtc->ctx;
970 unsigned long flags;
971
972 DRM_DEV_DEBUG_KMS(mixer_ctx->dev, "win: %d\n", plane->index);
973
974 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
975 return;
976
977 spin_lock_irqsave(&mixer_ctx->reg_slock, flags);
978 mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
979 spin_unlock_irqrestore(&mixer_ctx->reg_slock, flags);
980}
981
982static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
983{
984 struct mixer_context *mixer_ctx = crtc->ctx;
985
986 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
987 return;
988
989 mixer_enable_sync(mixer_ctx);
990 exynos_crtc_handle_event(crtc);
991}
992
993static void mixer_atomic_enable(struct exynos_drm_crtc *crtc)
994{
995 struct mixer_context *ctx = crtc->ctx;
996 int ret;
997
998 if (test_bit(MXR_BIT_POWERED, &ctx->flags))
999 return;
1000
1001 ret = pm_runtime_resume_and_get(ctx->dev);
1002 if (ret < 0) {
1003 dev_err(ctx->dev, "failed to enable MIXER device.\n");
1004 return;
1005 }
1006
1007 exynos_drm_pipe_clk_enable(crtc, true);
1008
1009 mixer_disable_sync(ctx);
1010
1011 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
1012
1013 if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
1014 mixer_reg_writemask(ctx, MXR_INT_STATUS, ~0,
1015 MXR_INT_CLEAR_VSYNC);
1016 mixer_reg_writemask(ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
1017 }
1018 mixer_win_reset(ctx);
1019
1020 mixer_commit(ctx);
1021
1022 mixer_enable_sync(ctx);
1023
1024 set_bit(MXR_BIT_POWERED, &ctx->flags);
1025}
1026
1027static void mixer_atomic_disable(struct exynos_drm_crtc *crtc)
1028{
1029 struct mixer_context *ctx = crtc->ctx;
1030 int i;
1031
1032 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
1033 return;
1034
1035 mixer_stop(ctx);
1036 mixer_regs_dump(ctx);
1037
1038 for (i = 0; i < MIXER_WIN_NR; i++)
1039 mixer_disable_plane(crtc, &ctx->planes[i]);
1040
1041 exynos_drm_pipe_clk_enable(crtc, false);
1042
1043 pm_runtime_put(ctx->dev);
1044
1045 clear_bit(MXR_BIT_POWERED, &ctx->flags);
1046}
1047
1048static enum drm_mode_status mixer_mode_valid(struct exynos_drm_crtc *crtc,
1049 const struct drm_display_mode *mode)
1050{
1051 struct mixer_context *ctx = crtc->ctx;
1052 u32 w = mode->hdisplay, h = mode->vdisplay;
1053
1054 DRM_DEV_DEBUG_KMS(ctx->dev, "xres=%d, yres=%d, refresh=%d, intl=%d\n",
1055 w, h, drm_mode_vrefresh(mode),
1056 !!(mode->flags & DRM_MODE_FLAG_INTERLACE));
1057
1058 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1059 return MODE_OK;
1060
1061 if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1062 (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1063 (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1064 return MODE_OK;
1065
1066 if ((w == 1024 && h == 768) ||
1067 (w == 1366 && h == 768) ||
1068 (w == 1280 && h == 1024))
1069 return MODE_OK;
1070
1071 return MODE_BAD;
1072}
1073
1074static bool mixer_mode_fixup(struct exynos_drm_crtc *crtc,
1075 const struct drm_display_mode *mode,
1076 struct drm_display_mode *adjusted_mode)
1077{
1078 struct mixer_context *ctx = crtc->ctx;
1079 int width = mode->hdisplay, height = mode->vdisplay, i;
1080
1081 static const struct {
1082 int hdisplay, vdisplay, htotal, vtotal, scan_val;
1083 } modes[] = {
1084 { 720, 480, 858, 525, MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD },
1085 { 720, 576, 864, 625, MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD },
1086 { 1280, 720, 1650, 750, MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD },
1087 { 1920, 1080, 2200, 1125, MXR_CFG_SCAN_HD_1080 |
1088 MXR_CFG_SCAN_HD }
1089 };
1090
1091 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
1092 __set_bit(MXR_BIT_INTERLACE, &ctx->flags);
1093 else
1094 __clear_bit(MXR_BIT_INTERLACE, &ctx->flags);
1095
1096 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1097 return true;
1098
1099 for (i = 0; i < ARRAY_SIZE(modes); ++i)
1100 if (width <= modes[i].hdisplay && height <= modes[i].vdisplay) {
1101 ctx->scan_value = modes[i].scan_val;
1102 if (width < modes[i].hdisplay ||
1103 height < modes[i].vdisplay) {
1104 adjusted_mode->hdisplay = modes[i].hdisplay;
1105 adjusted_mode->hsync_start = modes[i].hdisplay;
1106 adjusted_mode->hsync_end = modes[i].htotal;
1107 adjusted_mode->htotal = modes[i].htotal;
1108 adjusted_mode->vdisplay = modes[i].vdisplay;
1109 adjusted_mode->vsync_start = modes[i].vdisplay;
1110 adjusted_mode->vsync_end = modes[i].vtotal;
1111 adjusted_mode->vtotal = modes[i].vtotal;
1112 }
1113
1114 return true;
1115 }
1116
1117 return false;
1118}
1119
1120static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1121 .atomic_enable = mixer_atomic_enable,
1122 .atomic_disable = mixer_atomic_disable,
1123 .enable_vblank = mixer_enable_vblank,
1124 .disable_vblank = mixer_disable_vblank,
1125 .atomic_begin = mixer_atomic_begin,
1126 .update_plane = mixer_update_plane,
1127 .disable_plane = mixer_disable_plane,
1128 .atomic_flush = mixer_atomic_flush,
1129 .mode_valid = mixer_mode_valid,
1130 .mode_fixup = mixer_mode_fixup,
1131};
1132
1133static const struct mixer_drv_data exynos5420_mxr_drv_data = {
1134 .version = MXR_VER_128_0_0_184,
1135 .is_vp_enabled = 0,
1136};
1137
1138static const struct mixer_drv_data exynos5250_mxr_drv_data = {
1139 .version = MXR_VER_16_0_33_0,
1140 .is_vp_enabled = 0,
1141};
1142
1143static const struct mixer_drv_data exynos4212_mxr_drv_data = {
1144 .version = MXR_VER_0_0_0_16,
1145 .is_vp_enabled = 1,
1146};
1147
1148static const struct mixer_drv_data exynos4210_mxr_drv_data = {
1149 .version = MXR_VER_0_0_0_16,
1150 .is_vp_enabled = 1,
1151 .has_sclk = 1,
1152};
1153
1154static const struct of_device_id mixer_match_types[] = {
1155 {
1156 .compatible = "samsung,exynos4210-mixer",
1157 .data = &exynos4210_mxr_drv_data,
1158 }, {
1159 .compatible = "samsung,exynos4212-mixer",
1160 .data = &exynos4212_mxr_drv_data,
1161 }, {
1162 .compatible = "samsung,exynos5-mixer",
1163 .data = &exynos5250_mxr_drv_data,
1164 }, {
1165 .compatible = "samsung,exynos5250-mixer",
1166 .data = &exynos5250_mxr_drv_data,
1167 }, {
1168 .compatible = "samsung,exynos5420-mixer",
1169 .data = &exynos5420_mxr_drv_data,
1170 }, {
1171 /* end node */
1172 }
1173};
1174MODULE_DEVICE_TABLE(of, mixer_match_types);
1175
1176static int mixer_bind(struct device *dev, struct device *manager, void *data)
1177{
1178 struct mixer_context *ctx = dev_get_drvdata(dev);
1179 struct drm_device *drm_dev = data;
1180 struct exynos_drm_plane *exynos_plane;
1181 unsigned int i;
1182 int ret;
1183
1184 ret = mixer_initialize(ctx, drm_dev);
1185 if (ret)
1186 return ret;
1187
1188 for (i = 0; i < MIXER_WIN_NR; i++) {
1189 if (i == VP_DEFAULT_WIN && !test_bit(MXR_BIT_VP_ENABLED,
1190 &ctx->flags))
1191 continue;
1192
1193 ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1194 &plane_configs[i]);
1195 if (ret)
1196 return ret;
1197 }
1198
1199 exynos_plane = &ctx->planes[DEFAULT_WIN];
1200 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1201 EXYNOS_DISPLAY_TYPE_HDMI, &mixer_crtc_ops, ctx);
1202 if (IS_ERR(ctx->crtc)) {
1203 mixer_ctx_remove(ctx);
1204 ret = PTR_ERR(ctx->crtc);
1205 goto free_ctx;
1206 }
1207
1208 return 0;
1209
1210free_ctx:
1211 devm_kfree(dev, ctx);
1212 return ret;
1213}
1214
1215static void mixer_unbind(struct device *dev, struct device *master, void *data)
1216{
1217 struct mixer_context *ctx = dev_get_drvdata(dev);
1218
1219 mixer_ctx_remove(ctx);
1220}
1221
1222static const struct component_ops mixer_component_ops = {
1223 .bind = mixer_bind,
1224 .unbind = mixer_unbind,
1225};
1226
1227static int mixer_probe(struct platform_device *pdev)
1228{
1229 struct device *dev = &pdev->dev;
1230 const struct mixer_drv_data *drv;
1231 struct mixer_context *ctx;
1232 int ret;
1233
1234 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1235 if (!ctx) {
1236 DRM_DEV_ERROR(dev, "failed to alloc mixer context.\n");
1237 return -ENOMEM;
1238 }
1239
1240 drv = of_device_get_match_data(dev);
1241
1242 ctx->pdev = pdev;
1243 ctx->dev = dev;
1244 ctx->mxr_ver = drv->version;
1245
1246 if (drv->is_vp_enabled)
1247 __set_bit(MXR_BIT_VP_ENABLED, &ctx->flags);
1248 if (drv->has_sclk)
1249 __set_bit(MXR_BIT_HAS_SCLK, &ctx->flags);
1250
1251 platform_set_drvdata(pdev, ctx);
1252
1253 pm_runtime_enable(dev);
1254
1255 ret = component_add(&pdev->dev, &mixer_component_ops);
1256 if (ret)
1257 pm_runtime_disable(dev);
1258
1259 return ret;
1260}
1261
1262static int mixer_remove(struct platform_device *pdev)
1263{
1264 pm_runtime_disable(&pdev->dev);
1265
1266 component_del(&pdev->dev, &mixer_component_ops);
1267
1268 return 0;
1269}
1270
1271static int __maybe_unused exynos_mixer_suspend(struct device *dev)
1272{
1273 struct mixer_context *ctx = dev_get_drvdata(dev);
1274
1275 clk_disable_unprepare(ctx->hdmi);
1276 clk_disable_unprepare(ctx->mixer);
1277 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1278 clk_disable_unprepare(ctx->vp);
1279 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags))
1280 clk_disable_unprepare(ctx->sclk_mixer);
1281 }
1282
1283 return 0;
1284}
1285
1286static int __maybe_unused exynos_mixer_resume(struct device *dev)
1287{
1288 struct mixer_context *ctx = dev_get_drvdata(dev);
1289 int ret;
1290
1291 ret = clk_prepare_enable(ctx->mixer);
1292 if (ret < 0) {
1293 DRM_DEV_ERROR(ctx->dev,
1294 "Failed to prepare_enable the mixer clk [%d]\n",
1295 ret);
1296 return ret;
1297 }
1298 ret = clk_prepare_enable(ctx->hdmi);
1299 if (ret < 0) {
1300 DRM_DEV_ERROR(dev,
1301 "Failed to prepare_enable the hdmi clk [%d]\n",
1302 ret);
1303 return ret;
1304 }
1305 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1306 ret = clk_prepare_enable(ctx->vp);
1307 if (ret < 0) {
1308 DRM_DEV_ERROR(dev,
1309 "Failed to prepare_enable the vp clk [%d]\n",
1310 ret);
1311 return ret;
1312 }
1313 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags)) {
1314 ret = clk_prepare_enable(ctx->sclk_mixer);
1315 if (ret < 0) {
1316 DRM_DEV_ERROR(dev,
1317 "Failed to prepare_enable the " \
1318 "sclk_mixer clk [%d]\n",
1319 ret);
1320 return ret;
1321 }
1322 }
1323 }
1324
1325 return 0;
1326}
1327
1328static const struct dev_pm_ops exynos_mixer_pm_ops = {
1329 SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)
1330 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1331 pm_runtime_force_resume)
1332};
1333
1334struct platform_driver mixer_driver = {
1335 .driver = {
1336 .name = "exynos-mixer",
1337 .owner = THIS_MODULE,
1338 .pm = &exynos_mixer_pm_ops,
1339 .of_match_table = mixer_match_types,
1340 },
1341 .probe = mixer_probe,
1342 .remove = mixer_remove,
1343};