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1/*
2 * Copyright (C) 2011 Samsung Electronics Co.Ltd
3 * Authors:
4 * Seung-Woo Kim <sw0312.kim@samsung.com>
5 * Inki Dae <inki.dae@samsung.com>
6 * Joonyoung Shim <jy0922.shim@samsung.com>
7 *
8 * Based on drivers/media/video/s5p-tv/mixer_reg.c
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 */
16
17#include <drm/drmP.h>
18
19#include "regs-mixer.h"
20#include "regs-vp.h"
21
22#include <linux/kernel.h>
23#include <linux/spinlock.h>
24#include <linux/wait.h>
25#include <linux/i2c.h>
26#include <linux/platform_device.h>
27#include <linux/interrupt.h>
28#include <linux/irq.h>
29#include <linux/delay.h>
30#include <linux/pm_runtime.h>
31#include <linux/clk.h>
32#include <linux/regulator/consumer.h>
33#include <linux/of.h>
34#include <linux/component.h>
35
36#include <drm/exynos_drm.h>
37
38#include "exynos_drm_drv.h"
39#include "exynos_drm_crtc.h"
40#include "exynos_drm_fb.h"
41#include "exynos_drm_plane.h"
42#include "exynos_drm_iommu.h"
43
44#define MIXER_WIN_NR 3
45#define VP_DEFAULT_WIN 2
46
47/* The pixelformats that are natively supported by the mixer. */
48#define MXR_FORMAT_RGB565 4
49#define MXR_FORMAT_ARGB1555 5
50#define MXR_FORMAT_ARGB4444 6
51#define MXR_FORMAT_ARGB8888 7
52
53struct mixer_resources {
54 int irq;
55 void __iomem *mixer_regs;
56 void __iomem *vp_regs;
57 spinlock_t reg_slock;
58 struct clk *mixer;
59 struct clk *vp;
60 struct clk *hdmi;
61 struct clk *sclk_mixer;
62 struct clk *sclk_hdmi;
63 struct clk *mout_mixer;
64};
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};
76
77static const uint32_t mixer_formats[] = {
78 DRM_FORMAT_XRGB4444,
79 DRM_FORMAT_ARGB4444,
80 DRM_FORMAT_XRGB1555,
81 DRM_FORMAT_ARGB1555,
82 DRM_FORMAT_RGB565,
83 DRM_FORMAT_XRGB8888,
84 DRM_FORMAT_ARGB8888,
85};
86
87static const uint32_t vp_formats[] = {
88 DRM_FORMAT_NV12,
89 DRM_FORMAT_NV21,
90};
91
92struct mixer_context {
93 struct platform_device *pdev;
94 struct device *dev;
95 struct drm_device *drm_dev;
96 struct exynos_drm_crtc *crtc;
97 struct exynos_drm_plane planes[MIXER_WIN_NR];
98 int pipe;
99 unsigned long flags;
100 bool interlace;
101 bool vp_enabled;
102 bool has_sclk;
103
104 struct mixer_resources mixer_res;
105 enum mixer_version_id mxr_ver;
106 wait_queue_head_t wait_vsync_queue;
107 atomic_t wait_vsync_event;
108};
109
110struct mixer_drv_data {
111 enum mixer_version_id version;
112 bool is_vp_enabled;
113 bool has_sclk;
114};
115
116static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
117 {
118 .zpos = 0,
119 .type = DRM_PLANE_TYPE_PRIMARY,
120 .pixel_formats = mixer_formats,
121 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
122 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
123 EXYNOS_DRM_PLANE_CAP_ZPOS,
124 }, {
125 .zpos = 1,
126 .type = DRM_PLANE_TYPE_CURSOR,
127 .pixel_formats = mixer_formats,
128 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
129 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
130 EXYNOS_DRM_PLANE_CAP_ZPOS,
131 }, {
132 .zpos = 2,
133 .type = DRM_PLANE_TYPE_OVERLAY,
134 .pixel_formats = vp_formats,
135 .num_pixel_formats = ARRAY_SIZE(vp_formats),
136 .capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
137 EXYNOS_DRM_PLANE_CAP_ZPOS,
138 },
139};
140
141static const u8 filter_y_horiz_tap8[] = {
142 0, -1, -1, -1, -1, -1, -1, -1,
143 -1, -1, -1, -1, -1, 0, 0, 0,
144 0, 2, 4, 5, 6, 6, 6, 6,
145 6, 5, 5, 4, 3, 2, 1, 1,
146 0, -6, -12, -16, -18, -20, -21, -20,
147 -20, -18, -16, -13, -10, -8, -5, -2,
148 127, 126, 125, 121, 114, 107, 99, 89,
149 79, 68, 57, 46, 35, 25, 16, 8,
150};
151
152static const u8 filter_y_vert_tap4[] = {
153 0, -3, -6, -8, -8, -8, -8, -7,
154 -6, -5, -4, -3, -2, -1, -1, 0,
155 127, 126, 124, 118, 111, 102, 92, 81,
156 70, 59, 48, 37, 27, 19, 11, 5,
157 0, 5, 11, 19, 27, 37, 48, 59,
158 70, 81, 92, 102, 111, 118, 124, 126,
159 0, 0, -1, -1, -2, -3, -4, -5,
160 -6, -7, -8, -8, -8, -8, -6, -3,
161};
162
163static const u8 filter_cr_horiz_tap4[] = {
164 0, -3, -6, -8, -8, -8, -8, -7,
165 -6, -5, -4, -3, -2, -1, -1, 0,
166 127, 126, 124, 118, 111, 102, 92, 81,
167 70, 59, 48, 37, 27, 19, 11, 5,
168};
169
170static inline bool is_alpha_format(unsigned int pixel_format)
171{
172 switch (pixel_format) {
173 case DRM_FORMAT_ARGB8888:
174 case DRM_FORMAT_ARGB1555:
175 case DRM_FORMAT_ARGB4444:
176 return true;
177 default:
178 return false;
179 }
180}
181
182static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
183{
184 return readl(res->vp_regs + reg_id);
185}
186
187static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id,
188 u32 val)
189{
190 writel(val, res->vp_regs + reg_id);
191}
192
193static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id,
194 u32 val, u32 mask)
195{
196 u32 old = vp_reg_read(res, reg_id);
197
198 val = (val & mask) | (old & ~mask);
199 writel(val, res->vp_regs + reg_id);
200}
201
202static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id)
203{
204 return readl(res->mixer_regs + reg_id);
205}
206
207static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id,
208 u32 val)
209{
210 writel(val, res->mixer_regs + reg_id);
211}
212
213static inline void mixer_reg_writemask(struct mixer_resources *res,
214 u32 reg_id, u32 val, u32 mask)
215{
216 u32 old = mixer_reg_read(res, reg_id);
217
218 val = (val & mask) | (old & ~mask);
219 writel(val, res->mixer_regs + reg_id);
220}
221
222static void mixer_regs_dump(struct mixer_context *ctx)
223{
224#define DUMPREG(reg_id) \
225do { \
226 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
227 (u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \
228} while (0)
229
230 DUMPREG(MXR_STATUS);
231 DUMPREG(MXR_CFG);
232 DUMPREG(MXR_INT_EN);
233 DUMPREG(MXR_INT_STATUS);
234
235 DUMPREG(MXR_LAYER_CFG);
236 DUMPREG(MXR_VIDEO_CFG);
237
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);
244
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);
251#undef DUMPREG
252}
253
254static void vp_regs_dump(struct mixer_context *ctx)
255{
256#define DUMPREG(reg_id) \
257do { \
258 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
259 (u32) readl(ctx->mixer_res.vp_regs + reg_id)); \
260} while (0)
261
262 DUMPREG(VP_ENABLE);
263 DUMPREG(VP_SRESET);
264 DUMPREG(VP_SHADOW_UPDATE);
265 DUMPREG(VP_FIELD_ID);
266 DUMPREG(VP_MODE);
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);
283 DUMPREG(VP_H_RATIO);
284 DUMPREG(VP_V_RATIO);
285
286#undef DUMPREG
287}
288
289static inline void vp_filter_set(struct mixer_resources *res,
290 int reg_id, const u8 *data, unsigned int size)
291{
292 /* assure 4-byte align */
293 BUG_ON(size & 3);
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(res, reg_id, val);
298 }
299}
300
301static void vp_default_filter(struct mixer_resources *res)
302{
303 vp_filter_set(res, VP_POLY8_Y0_LL,
304 filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
305 vp_filter_set(res, VP_POLY4_Y0_LL,
306 filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
307 vp_filter_set(res, VP_POLY4_C0_LL,
308 filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
309}
310
311static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
312 bool alpha)
313{
314 struct mixer_resources *res = &ctx->mixer_res;
315 u32 val;
316
317 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
318 if (alpha) {
319 /* blending based on pixel alpha */
320 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
321 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
322 }
323 mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
324 val, MXR_GRP_CFG_MISC_MASK);
325}
326
327static void mixer_cfg_vp_blend(struct mixer_context *ctx)
328{
329 struct mixer_resources *res = &ctx->mixer_res;
330 u32 val;
331
332 /*
333 * No blending at the moment since the NV12/NV21 pixelformats don't
334 * have an alpha channel. However the mixer supports a global alpha
335 * value for a layer. Once this functionality is exposed, we can
336 * support blending of the video layer through this.
337 */
338 val = 0;
339 mixer_reg_write(res, MXR_VIDEO_CFG, val);
340}
341
342static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
343{
344 struct mixer_resources *res = &ctx->mixer_res;
345
346 /* block update on vsync */
347 mixer_reg_writemask(res, MXR_STATUS, enable ?
348 MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
349
350 if (ctx->vp_enabled)
351 vp_reg_write(res, VP_SHADOW_UPDATE, enable ?
352 VP_SHADOW_UPDATE_ENABLE : 0);
353}
354
355static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height)
356{
357 struct mixer_resources *res = &ctx->mixer_res;
358 u32 val;
359
360 /* choosing between interlace and progressive mode */
361 val = (ctx->interlace ? MXR_CFG_SCAN_INTERLACE :
362 MXR_CFG_SCAN_PROGRESSIVE);
363
364 if (ctx->mxr_ver != MXR_VER_128_0_0_184) {
365 /* choosing between proper HD and SD mode */
366 if (height <= 480)
367 val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
368 else if (height <= 576)
369 val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
370 else if (height <= 720)
371 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
372 else if (height <= 1080)
373 val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
374 else
375 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
376 }
377
378 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK);
379}
380
381static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
382{
383 struct mixer_resources *res = &ctx->mixer_res;
384 u32 val;
385
386 if (height == 480) {
387 val = MXR_CFG_RGB601_0_255;
388 } else if (height == 576) {
389 val = MXR_CFG_RGB601_0_255;
390 } else if (height == 720) {
391 val = MXR_CFG_RGB709_16_235;
392 mixer_reg_write(res, MXR_CM_COEFF_Y,
393 (1 << 30) | (94 << 20) | (314 << 10) |
394 (32 << 0));
395 mixer_reg_write(res, MXR_CM_COEFF_CB,
396 (972 << 20) | (851 << 10) | (225 << 0));
397 mixer_reg_write(res, MXR_CM_COEFF_CR,
398 (225 << 20) | (820 << 10) | (1004 << 0));
399 } else if (height == 1080) {
400 val = MXR_CFG_RGB709_16_235;
401 mixer_reg_write(res, MXR_CM_COEFF_Y,
402 (1 << 30) | (94 << 20) | (314 << 10) |
403 (32 << 0));
404 mixer_reg_write(res, MXR_CM_COEFF_CB,
405 (972 << 20) | (851 << 10) | (225 << 0));
406 mixer_reg_write(res, MXR_CM_COEFF_CR,
407 (225 << 20) | (820 << 10) | (1004 << 0));
408 } else {
409 val = MXR_CFG_RGB709_16_235;
410 mixer_reg_write(res, MXR_CM_COEFF_Y,
411 (1 << 30) | (94 << 20) | (314 << 10) |
412 (32 << 0));
413 mixer_reg_write(res, MXR_CM_COEFF_CB,
414 (972 << 20) | (851 << 10) | (225 << 0));
415 mixer_reg_write(res, MXR_CM_COEFF_CR,
416 (225 << 20) | (820 << 10) | (1004 << 0));
417 }
418
419 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
420}
421
422static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
423 unsigned int priority, bool enable)
424{
425 struct mixer_resources *res = &ctx->mixer_res;
426 u32 val = enable ? ~0 : 0;
427
428 switch (win) {
429 case 0:
430 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
431 mixer_reg_writemask(res, MXR_LAYER_CFG,
432 MXR_LAYER_CFG_GRP0_VAL(priority),
433 MXR_LAYER_CFG_GRP0_MASK);
434 break;
435 case 1:
436 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
437 mixer_reg_writemask(res, MXR_LAYER_CFG,
438 MXR_LAYER_CFG_GRP1_VAL(priority),
439 MXR_LAYER_CFG_GRP1_MASK);
440 break;
441 case VP_DEFAULT_WIN:
442 if (ctx->vp_enabled) {
443 vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
444 mixer_reg_writemask(res, MXR_CFG, val,
445 MXR_CFG_VP_ENABLE);
446 mixer_reg_writemask(res, MXR_LAYER_CFG,
447 MXR_LAYER_CFG_VP_VAL(priority),
448 MXR_LAYER_CFG_VP_MASK);
449 }
450 break;
451 }
452}
453
454static void mixer_run(struct mixer_context *ctx)
455{
456 struct mixer_resources *res = &ctx->mixer_res;
457
458 mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
459}
460
461static void mixer_stop(struct mixer_context *ctx)
462{
463 struct mixer_resources *res = &ctx->mixer_res;
464 int timeout = 20;
465
466 mixer_reg_writemask(res, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
467
468 while (!(mixer_reg_read(res, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
469 --timeout)
470 usleep_range(10000, 12000);
471}
472
473static void vp_video_buffer(struct mixer_context *ctx,
474 struct exynos_drm_plane *plane)
475{
476 struct exynos_drm_plane_state *state =
477 to_exynos_plane_state(plane->base.state);
478 struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode;
479 struct mixer_resources *res = &ctx->mixer_res;
480 struct drm_framebuffer *fb = state->base.fb;
481 unsigned long flags;
482 dma_addr_t luma_addr[2], chroma_addr[2];
483 bool tiled_mode = false;
484 bool crcb_mode = false;
485 u32 val;
486
487 switch (fb->pixel_format) {
488 case DRM_FORMAT_NV12:
489 crcb_mode = false;
490 break;
491 case DRM_FORMAT_NV21:
492 crcb_mode = true;
493 break;
494 default:
495 DRM_ERROR("pixel format for vp is wrong [%d].\n",
496 fb->pixel_format);
497 return;
498 }
499
500 luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0);
501 chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1);
502
503 if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
504 ctx->interlace = true;
505 if (tiled_mode) {
506 luma_addr[1] = luma_addr[0] + 0x40;
507 chroma_addr[1] = chroma_addr[0] + 0x40;
508 } else {
509 luma_addr[1] = luma_addr[0] + fb->pitches[0];
510 chroma_addr[1] = chroma_addr[0] + fb->pitches[0];
511 }
512 } else {
513 ctx->interlace = false;
514 luma_addr[1] = 0;
515 chroma_addr[1] = 0;
516 }
517
518 spin_lock_irqsave(&res->reg_slock, flags);
519
520 /* interlace or progressive scan mode */
521 val = (ctx->interlace ? ~0 : 0);
522 vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP);
523
524 /* setup format */
525 val = (crcb_mode ? VP_MODE_NV21 : VP_MODE_NV12);
526 val |= (tiled_mode ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
527 vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK);
528
529 /* setting size of input image */
530 vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
531 VP_IMG_VSIZE(fb->height));
532 /* chroma height has to reduced by 2 to avoid chroma distorions */
533 vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[0]) |
534 VP_IMG_VSIZE(fb->height / 2));
535
536 vp_reg_write(res, VP_SRC_WIDTH, state->src.w);
537 vp_reg_write(res, VP_SRC_HEIGHT, state->src.h);
538 vp_reg_write(res, VP_SRC_H_POSITION,
539 VP_SRC_H_POSITION_VAL(state->src.x));
540 vp_reg_write(res, VP_SRC_V_POSITION, state->src.y);
541
542 vp_reg_write(res, VP_DST_WIDTH, state->crtc.w);
543 vp_reg_write(res, VP_DST_H_POSITION, state->crtc.x);
544 if (ctx->interlace) {
545 vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h / 2);
546 vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y / 2);
547 } else {
548 vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h);
549 vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y);
550 }
551
552 vp_reg_write(res, VP_H_RATIO, state->h_ratio);
553 vp_reg_write(res, VP_V_RATIO, state->v_ratio);
554
555 vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
556
557 /* set buffer address to vp */
558 vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]);
559 vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]);
560 vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]);
561 vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]);
562
563 mixer_cfg_scan(ctx, mode->vdisplay);
564 mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
565 mixer_cfg_layer(ctx, plane->index, state->zpos + 1, true);
566 mixer_cfg_vp_blend(ctx);
567 mixer_run(ctx);
568
569 spin_unlock_irqrestore(&res->reg_slock, flags);
570
571 mixer_regs_dump(ctx);
572 vp_regs_dump(ctx);
573}
574
575static void mixer_layer_update(struct mixer_context *ctx)
576{
577 struct mixer_resources *res = &ctx->mixer_res;
578
579 mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
580}
581
582static void mixer_graph_buffer(struct mixer_context *ctx,
583 struct exynos_drm_plane *plane)
584{
585 struct exynos_drm_plane_state *state =
586 to_exynos_plane_state(plane->base.state);
587 struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode;
588 struct mixer_resources *res = &ctx->mixer_res;
589 struct drm_framebuffer *fb = state->base.fb;
590 unsigned long flags;
591 unsigned int win = plane->index;
592 unsigned int x_ratio = 0, y_ratio = 0;
593 unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
594 dma_addr_t dma_addr;
595 unsigned int fmt;
596 u32 val;
597
598 switch (fb->pixel_format) {
599 case DRM_FORMAT_XRGB4444:
600 case DRM_FORMAT_ARGB4444:
601 fmt = MXR_FORMAT_ARGB4444;
602 break;
603
604 case DRM_FORMAT_XRGB1555:
605 case DRM_FORMAT_ARGB1555:
606 fmt = MXR_FORMAT_ARGB1555;
607 break;
608
609 case DRM_FORMAT_RGB565:
610 fmt = MXR_FORMAT_RGB565;
611 break;
612
613 case DRM_FORMAT_XRGB8888:
614 case DRM_FORMAT_ARGB8888:
615 fmt = MXR_FORMAT_ARGB8888;
616 break;
617
618 default:
619 DRM_DEBUG_KMS("pixelformat unsupported by mixer\n");
620 return;
621 }
622
623 /* ratio is already checked by common plane code */
624 x_ratio = state->h_ratio == (1 << 15);
625 y_ratio = state->v_ratio == (1 << 15);
626
627 dst_x_offset = state->crtc.x;
628 dst_y_offset = state->crtc.y;
629
630 /* converting dma address base and source offset */
631 dma_addr = exynos_drm_fb_dma_addr(fb, 0)
632 + (state->src.x * fb->bits_per_pixel >> 3)
633 + (state->src.y * fb->pitches[0]);
634 src_x_offset = 0;
635 src_y_offset = 0;
636
637 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
638 ctx->interlace = true;
639 else
640 ctx->interlace = false;
641
642 spin_lock_irqsave(&res->reg_slock, flags);
643
644 /* setup format */
645 mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
646 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
647
648 /* setup geometry */
649 mixer_reg_write(res, MXR_GRAPHIC_SPAN(win),
650 fb->pitches[0] / (fb->bits_per_pixel >> 3));
651
652 /* setup display size */
653 if (ctx->mxr_ver == MXR_VER_128_0_0_184 &&
654 win == DEFAULT_WIN) {
655 val = MXR_MXR_RES_HEIGHT(mode->vdisplay);
656 val |= MXR_MXR_RES_WIDTH(mode->hdisplay);
657 mixer_reg_write(res, MXR_RESOLUTION, val);
658 }
659
660 val = MXR_GRP_WH_WIDTH(state->src.w);
661 val |= MXR_GRP_WH_HEIGHT(state->src.h);
662 val |= MXR_GRP_WH_H_SCALE(x_ratio);
663 val |= MXR_GRP_WH_V_SCALE(y_ratio);
664 mixer_reg_write(res, MXR_GRAPHIC_WH(win), val);
665
666 /* setup offsets in source image */
667 val = MXR_GRP_SXY_SX(src_x_offset);
668 val |= MXR_GRP_SXY_SY(src_y_offset);
669 mixer_reg_write(res, MXR_GRAPHIC_SXY(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(res, MXR_GRAPHIC_DXY(win), val);
675
676 /* set buffer address to mixer */
677 mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr);
678
679 mixer_cfg_scan(ctx, mode->vdisplay);
680 mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
681 mixer_cfg_layer(ctx, win, state->zpos + 1, true);
682 mixer_cfg_gfx_blend(ctx, win, is_alpha_format(fb->pixel_format));
683
684 /* layer update mandatory for mixer 16.0.33.0 */
685 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
686 ctx->mxr_ver == MXR_VER_128_0_0_184)
687 mixer_layer_update(ctx);
688
689 mixer_run(ctx);
690
691 spin_unlock_irqrestore(&res->reg_slock, flags);
692
693 mixer_regs_dump(ctx);
694}
695
696static void vp_win_reset(struct mixer_context *ctx)
697{
698 struct mixer_resources *res = &ctx->mixer_res;
699 int tries = 100;
700
701 vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING);
702 for (tries = 100; tries; --tries) {
703 /* waiting until VP_SRESET_PROCESSING is 0 */
704 if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING)
705 break;
706 mdelay(10);
707 }
708 WARN(tries == 0, "failed to reset Video Processor\n");
709}
710
711static void mixer_win_reset(struct mixer_context *ctx)
712{
713 struct mixer_resources *res = &ctx->mixer_res;
714 unsigned long flags;
715
716 spin_lock_irqsave(&res->reg_slock, flags);
717
718 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
719
720 /* set output in RGB888 mode */
721 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
722
723 /* 16 beat burst in DMA */
724 mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
725 MXR_STATUS_BURST_MASK);
726
727 /* reset default layer priority */
728 mixer_reg_write(res, MXR_LAYER_CFG, 0);
729
730 /* setting background color */
731 mixer_reg_write(res, MXR_BG_COLOR0, 0x008080);
732 mixer_reg_write(res, MXR_BG_COLOR1, 0x008080);
733 mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
734
735 if (ctx->vp_enabled) {
736 /* configuration of Video Processor Registers */
737 vp_win_reset(ctx);
738 vp_default_filter(res);
739 }
740
741 /* disable all layers */
742 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
743 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
744 if (ctx->vp_enabled)
745 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
746
747 spin_unlock_irqrestore(&res->reg_slock, flags);
748}
749
750static irqreturn_t mixer_irq_handler(int irq, void *arg)
751{
752 struct mixer_context *ctx = arg;
753 struct mixer_resources *res = &ctx->mixer_res;
754 u32 val, base, shadow;
755 int win;
756
757 spin_lock(&res->reg_slock);
758
759 /* read interrupt status for handling and clearing flags for VSYNC */
760 val = mixer_reg_read(res, MXR_INT_STATUS);
761
762 /* handling VSYNC */
763 if (val & MXR_INT_STATUS_VSYNC) {
764 /* vsync interrupt use different bit for read and clear */
765 val |= MXR_INT_CLEAR_VSYNC;
766 val &= ~MXR_INT_STATUS_VSYNC;
767
768 /* interlace scan need to check shadow register */
769 if (ctx->interlace) {
770 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0));
771 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0));
772 if (base != shadow)
773 goto out;
774
775 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(1));
776 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1));
777 if (base != shadow)
778 goto out;
779 }
780
781 drm_crtc_handle_vblank(&ctx->crtc->base);
782 for (win = 0 ; win < MIXER_WIN_NR ; win++) {
783 struct exynos_drm_plane *plane = &ctx->planes[win];
784
785 if (!plane->pending_fb)
786 continue;
787
788 exynos_drm_crtc_finish_update(ctx->crtc, plane);
789 }
790
791 /* set wait vsync event to zero and wake up queue. */
792 if (atomic_read(&ctx->wait_vsync_event)) {
793 atomic_set(&ctx->wait_vsync_event, 0);
794 wake_up(&ctx->wait_vsync_queue);
795 }
796 }
797
798out:
799 /* clear interrupts */
800 mixer_reg_write(res, MXR_INT_STATUS, val);
801
802 spin_unlock(&res->reg_slock);
803
804 return IRQ_HANDLED;
805}
806
807static int mixer_resources_init(struct mixer_context *mixer_ctx)
808{
809 struct device *dev = &mixer_ctx->pdev->dev;
810 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
811 struct resource *res;
812 int ret;
813
814 spin_lock_init(&mixer_res->reg_slock);
815
816 mixer_res->mixer = devm_clk_get(dev, "mixer");
817 if (IS_ERR(mixer_res->mixer)) {
818 dev_err(dev, "failed to get clock 'mixer'\n");
819 return -ENODEV;
820 }
821
822 mixer_res->hdmi = devm_clk_get(dev, "hdmi");
823 if (IS_ERR(mixer_res->hdmi)) {
824 dev_err(dev, "failed to get clock 'hdmi'\n");
825 return PTR_ERR(mixer_res->hdmi);
826 }
827
828 mixer_res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
829 if (IS_ERR(mixer_res->sclk_hdmi)) {
830 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
831 return -ENODEV;
832 }
833 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
834 if (res == NULL) {
835 dev_err(dev, "get memory resource failed.\n");
836 return -ENXIO;
837 }
838
839 mixer_res->mixer_regs = devm_ioremap(dev, res->start,
840 resource_size(res));
841 if (mixer_res->mixer_regs == NULL) {
842 dev_err(dev, "register mapping failed.\n");
843 return -ENXIO;
844 }
845
846 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0);
847 if (res == NULL) {
848 dev_err(dev, "get interrupt resource failed.\n");
849 return -ENXIO;
850 }
851
852 ret = devm_request_irq(dev, res->start, mixer_irq_handler,
853 0, "drm_mixer", mixer_ctx);
854 if (ret) {
855 dev_err(dev, "request interrupt failed.\n");
856 return ret;
857 }
858 mixer_res->irq = res->start;
859
860 return 0;
861}
862
863static int vp_resources_init(struct mixer_context *mixer_ctx)
864{
865 struct device *dev = &mixer_ctx->pdev->dev;
866 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
867 struct resource *res;
868
869 mixer_res->vp = devm_clk_get(dev, "vp");
870 if (IS_ERR(mixer_res->vp)) {
871 dev_err(dev, "failed to get clock 'vp'\n");
872 return -ENODEV;
873 }
874
875 if (mixer_ctx->has_sclk) {
876 mixer_res->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
877 if (IS_ERR(mixer_res->sclk_mixer)) {
878 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
879 return -ENODEV;
880 }
881 mixer_res->mout_mixer = devm_clk_get(dev, "mout_mixer");
882 if (IS_ERR(mixer_res->mout_mixer)) {
883 dev_err(dev, "failed to get clock 'mout_mixer'\n");
884 return -ENODEV;
885 }
886
887 if (mixer_res->sclk_hdmi && mixer_res->mout_mixer)
888 clk_set_parent(mixer_res->mout_mixer,
889 mixer_res->sclk_hdmi);
890 }
891
892 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
893 if (res == NULL) {
894 dev_err(dev, "get memory resource failed.\n");
895 return -ENXIO;
896 }
897
898 mixer_res->vp_regs = devm_ioremap(dev, res->start,
899 resource_size(res));
900 if (mixer_res->vp_regs == NULL) {
901 dev_err(dev, "register mapping failed.\n");
902 return -ENXIO;
903 }
904
905 return 0;
906}
907
908static int mixer_initialize(struct mixer_context *mixer_ctx,
909 struct drm_device *drm_dev)
910{
911 int ret;
912 struct exynos_drm_private *priv;
913 priv = drm_dev->dev_private;
914
915 mixer_ctx->drm_dev = drm_dev;
916 mixer_ctx->pipe = priv->pipe++;
917
918 /* acquire resources: regs, irqs, clocks */
919 ret = mixer_resources_init(mixer_ctx);
920 if (ret) {
921 DRM_ERROR("mixer_resources_init failed ret=%d\n", ret);
922 return ret;
923 }
924
925 if (mixer_ctx->vp_enabled) {
926 /* acquire vp resources: regs, irqs, clocks */
927 ret = vp_resources_init(mixer_ctx);
928 if (ret) {
929 DRM_ERROR("vp_resources_init failed ret=%d\n", ret);
930 return ret;
931 }
932 }
933
934 ret = drm_iommu_attach_device(drm_dev, mixer_ctx->dev);
935 if (ret)
936 priv->pipe--;
937
938 return ret;
939}
940
941static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
942{
943 drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev);
944}
945
946static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
947{
948 struct mixer_context *mixer_ctx = crtc->ctx;
949 struct mixer_resources *res = &mixer_ctx->mixer_res;
950
951 __set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
952 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
953 return 0;
954
955 /* enable vsync interrupt */
956 mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
957 mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
958
959 return 0;
960}
961
962static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
963{
964 struct mixer_context *mixer_ctx = crtc->ctx;
965 struct mixer_resources *res = &mixer_ctx->mixer_res;
966
967 __clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
968
969 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
970 return;
971
972 /* disable vsync interrupt */
973 mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
974 mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
975}
976
977static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
978{
979 struct mixer_context *mixer_ctx = crtc->ctx;
980
981 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
982 return;
983
984 mixer_vsync_set_update(mixer_ctx, false);
985}
986
987static void mixer_update_plane(struct exynos_drm_crtc *crtc,
988 struct exynos_drm_plane *plane)
989{
990 struct mixer_context *mixer_ctx = crtc->ctx;
991
992 DRM_DEBUG_KMS("win: %d\n", plane->index);
993
994 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
995 return;
996
997 if (plane->index == VP_DEFAULT_WIN)
998 vp_video_buffer(mixer_ctx, plane);
999 else
1000 mixer_graph_buffer(mixer_ctx, plane);
1001}
1002
1003static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
1004 struct exynos_drm_plane *plane)
1005{
1006 struct mixer_context *mixer_ctx = crtc->ctx;
1007 struct mixer_resources *res = &mixer_ctx->mixer_res;
1008 unsigned long flags;
1009
1010 DRM_DEBUG_KMS("win: %d\n", plane->index);
1011
1012 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
1013 return;
1014
1015 spin_lock_irqsave(&res->reg_slock, flags);
1016 mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
1017 spin_unlock_irqrestore(&res->reg_slock, flags);
1018}
1019
1020static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
1021{
1022 struct mixer_context *mixer_ctx = crtc->ctx;
1023
1024 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
1025 return;
1026
1027 mixer_vsync_set_update(mixer_ctx, true);
1028}
1029
1030static void mixer_wait_for_vblank(struct exynos_drm_crtc *crtc)
1031{
1032 struct mixer_context *mixer_ctx = crtc->ctx;
1033 int err;
1034
1035 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
1036 return;
1037
1038 err = drm_vblank_get(mixer_ctx->drm_dev, mixer_ctx->pipe);
1039 if (err < 0) {
1040 DRM_DEBUG_KMS("failed to acquire vblank counter\n");
1041 return;
1042 }
1043
1044 atomic_set(&mixer_ctx->wait_vsync_event, 1);
1045
1046 /*
1047 * wait for MIXER to signal VSYNC interrupt or return after
1048 * timeout which is set to 50ms (refresh rate of 20).
1049 */
1050 if (!wait_event_timeout(mixer_ctx->wait_vsync_queue,
1051 !atomic_read(&mixer_ctx->wait_vsync_event),
1052 HZ/20))
1053 DRM_DEBUG_KMS("vblank wait timed out.\n");
1054
1055 drm_vblank_put(mixer_ctx->drm_dev, mixer_ctx->pipe);
1056}
1057
1058static void mixer_enable(struct exynos_drm_crtc *crtc)
1059{
1060 struct mixer_context *ctx = crtc->ctx;
1061 struct mixer_resources *res = &ctx->mixer_res;
1062
1063 if (test_bit(MXR_BIT_POWERED, &ctx->flags))
1064 return;
1065
1066 pm_runtime_get_sync(ctx->dev);
1067
1068 mixer_vsync_set_update(ctx, false);
1069
1070 mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
1071
1072 if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
1073 mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
1074 mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
1075 }
1076 mixer_win_reset(ctx);
1077
1078 mixer_vsync_set_update(ctx, true);
1079
1080 set_bit(MXR_BIT_POWERED, &ctx->flags);
1081}
1082
1083static void mixer_disable(struct exynos_drm_crtc *crtc)
1084{
1085 struct mixer_context *ctx = crtc->ctx;
1086 int i;
1087
1088 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
1089 return;
1090
1091 mixer_stop(ctx);
1092 mixer_regs_dump(ctx);
1093
1094 for (i = 0; i < MIXER_WIN_NR; i++)
1095 mixer_disable_plane(crtc, &ctx->planes[i]);
1096
1097 pm_runtime_put(ctx->dev);
1098
1099 clear_bit(MXR_BIT_POWERED, &ctx->flags);
1100}
1101
1102/* Only valid for Mixer version 16.0.33.0 */
1103static int mixer_atomic_check(struct exynos_drm_crtc *crtc,
1104 struct drm_crtc_state *state)
1105{
1106 struct drm_display_mode *mode = &state->adjusted_mode;
1107 u32 w, h;
1108
1109 w = mode->hdisplay;
1110 h = mode->vdisplay;
1111
1112 DRM_DEBUG_KMS("xres=%d, yres=%d, refresh=%d, intl=%d\n",
1113 mode->hdisplay, mode->vdisplay, mode->vrefresh,
1114 (mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0);
1115
1116 if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1117 (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1118 (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1119 return 0;
1120
1121 return -EINVAL;
1122}
1123
1124static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1125 .enable = mixer_enable,
1126 .disable = mixer_disable,
1127 .enable_vblank = mixer_enable_vblank,
1128 .disable_vblank = mixer_disable_vblank,
1129 .wait_for_vblank = mixer_wait_for_vblank,
1130 .atomic_begin = mixer_atomic_begin,
1131 .update_plane = mixer_update_plane,
1132 .disable_plane = mixer_disable_plane,
1133 .atomic_flush = mixer_atomic_flush,
1134 .atomic_check = mixer_atomic_check,
1135};
1136
1137static struct mixer_drv_data exynos5420_mxr_drv_data = {
1138 .version = MXR_VER_128_0_0_184,
1139 .is_vp_enabled = 0,
1140};
1141
1142static struct mixer_drv_data exynos5250_mxr_drv_data = {
1143 .version = MXR_VER_16_0_33_0,
1144 .is_vp_enabled = 0,
1145};
1146
1147static struct mixer_drv_data exynos4212_mxr_drv_data = {
1148 .version = MXR_VER_0_0_0_16,
1149 .is_vp_enabled = 1,
1150};
1151
1152static struct mixer_drv_data exynos4210_mxr_drv_data = {
1153 .version = MXR_VER_0_0_0_16,
1154 .is_vp_enabled = 1,
1155 .has_sclk = 1,
1156};
1157
1158static const struct platform_device_id mixer_driver_types[] = {
1159 {
1160 .name = "s5p-mixer",
1161 .driver_data = (unsigned long)&exynos4210_mxr_drv_data,
1162 }, {
1163 .name = "exynos5-mixer",
1164 .driver_data = (unsigned long)&exynos5250_mxr_drv_data,
1165 }, {
1166 /* end node */
1167 }
1168};
1169
1170static struct of_device_id mixer_match_types[] = {
1171 {
1172 .compatible = "samsung,exynos4210-mixer",
1173 .data = &exynos4210_mxr_drv_data,
1174 }, {
1175 .compatible = "samsung,exynos4212-mixer",
1176 .data = &exynos4212_mxr_drv_data,
1177 }, {
1178 .compatible = "samsung,exynos5-mixer",
1179 .data = &exynos5250_mxr_drv_data,
1180 }, {
1181 .compatible = "samsung,exynos5250-mixer",
1182 .data = &exynos5250_mxr_drv_data,
1183 }, {
1184 .compatible = "samsung,exynos5420-mixer",
1185 .data = &exynos5420_mxr_drv_data,
1186 }, {
1187 /* end node */
1188 }
1189};
1190MODULE_DEVICE_TABLE(of, mixer_match_types);
1191
1192static int mixer_bind(struct device *dev, struct device *manager, void *data)
1193{
1194 struct mixer_context *ctx = dev_get_drvdata(dev);
1195 struct drm_device *drm_dev = data;
1196 struct exynos_drm_plane *exynos_plane;
1197 unsigned int i;
1198 int ret;
1199
1200 ret = mixer_initialize(ctx, drm_dev);
1201 if (ret)
1202 return ret;
1203
1204 for (i = 0; i < MIXER_WIN_NR; i++) {
1205 if (i == VP_DEFAULT_WIN && !ctx->vp_enabled)
1206 continue;
1207
1208 ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1209 1 << ctx->pipe, &plane_configs[i]);
1210 if (ret)
1211 return ret;
1212 }
1213
1214 exynos_plane = &ctx->planes[DEFAULT_WIN];
1215 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1216 ctx->pipe, EXYNOS_DISPLAY_TYPE_HDMI,
1217 &mixer_crtc_ops, ctx);
1218 if (IS_ERR(ctx->crtc)) {
1219 mixer_ctx_remove(ctx);
1220 ret = PTR_ERR(ctx->crtc);
1221 goto free_ctx;
1222 }
1223
1224 return 0;
1225
1226free_ctx:
1227 devm_kfree(dev, ctx);
1228 return ret;
1229}
1230
1231static void mixer_unbind(struct device *dev, struct device *master, void *data)
1232{
1233 struct mixer_context *ctx = dev_get_drvdata(dev);
1234
1235 mixer_ctx_remove(ctx);
1236}
1237
1238static const struct component_ops mixer_component_ops = {
1239 .bind = mixer_bind,
1240 .unbind = mixer_unbind,
1241};
1242
1243static int mixer_probe(struct platform_device *pdev)
1244{
1245 struct device *dev = &pdev->dev;
1246 struct mixer_drv_data *drv;
1247 struct mixer_context *ctx;
1248 int ret;
1249
1250 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1251 if (!ctx) {
1252 DRM_ERROR("failed to alloc mixer context.\n");
1253 return -ENOMEM;
1254 }
1255
1256 if (dev->of_node) {
1257 const struct of_device_id *match;
1258
1259 match = of_match_node(mixer_match_types, dev->of_node);
1260 drv = (struct mixer_drv_data *)match->data;
1261 } else {
1262 drv = (struct mixer_drv_data *)
1263 platform_get_device_id(pdev)->driver_data;
1264 }
1265
1266 ctx->pdev = pdev;
1267 ctx->dev = dev;
1268 ctx->vp_enabled = drv->is_vp_enabled;
1269 ctx->has_sclk = drv->has_sclk;
1270 ctx->mxr_ver = drv->version;
1271 init_waitqueue_head(&ctx->wait_vsync_queue);
1272 atomic_set(&ctx->wait_vsync_event, 0);
1273
1274 platform_set_drvdata(pdev, ctx);
1275
1276 ret = component_add(&pdev->dev, &mixer_component_ops);
1277 if (!ret)
1278 pm_runtime_enable(dev);
1279
1280 return ret;
1281}
1282
1283static int mixer_remove(struct platform_device *pdev)
1284{
1285 pm_runtime_disable(&pdev->dev);
1286
1287 component_del(&pdev->dev, &mixer_component_ops);
1288
1289 return 0;
1290}
1291
1292static int __maybe_unused exynos_mixer_suspend(struct device *dev)
1293{
1294 struct mixer_context *ctx = dev_get_drvdata(dev);
1295 struct mixer_resources *res = &ctx->mixer_res;
1296
1297 clk_disable_unprepare(res->hdmi);
1298 clk_disable_unprepare(res->mixer);
1299 if (ctx->vp_enabled) {
1300 clk_disable_unprepare(res->vp);
1301 if (ctx->has_sclk)
1302 clk_disable_unprepare(res->sclk_mixer);
1303 }
1304
1305 return 0;
1306}
1307
1308static int __maybe_unused exynos_mixer_resume(struct device *dev)
1309{
1310 struct mixer_context *ctx = dev_get_drvdata(dev);
1311 struct mixer_resources *res = &ctx->mixer_res;
1312 int ret;
1313
1314 ret = clk_prepare_enable(res->mixer);
1315 if (ret < 0) {
1316 DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret);
1317 return ret;
1318 }
1319 ret = clk_prepare_enable(res->hdmi);
1320 if (ret < 0) {
1321 DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret);
1322 return ret;
1323 }
1324 if (ctx->vp_enabled) {
1325 ret = clk_prepare_enable(res->vp);
1326 if (ret < 0) {
1327 DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n",
1328 ret);
1329 return ret;
1330 }
1331 if (ctx->has_sclk) {
1332 ret = clk_prepare_enable(res->sclk_mixer);
1333 if (ret < 0) {
1334 DRM_ERROR("Failed to prepare_enable the " \
1335 "sclk_mixer clk [%d]\n",
1336 ret);
1337 return ret;
1338 }
1339 }
1340 }
1341
1342 return 0;
1343}
1344
1345static const struct dev_pm_ops exynos_mixer_pm_ops = {
1346 SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)
1347};
1348
1349struct platform_driver mixer_driver = {
1350 .driver = {
1351 .name = "exynos-mixer",
1352 .owner = THIS_MODULE,
1353 .pm = &exynos_mixer_pm_ops,
1354 .of_match_table = mixer_match_types,
1355 },
1356 .probe = mixer_probe,
1357 .remove = mixer_remove,
1358 .id_table = mixer_driver_types,
1359};
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};