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[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / exynos / exynos_mixer.c
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_iommu.h"
41 #include "exynos_mixer.h"
42
43 #define get_mixer_manager(dev) platform_get_drvdata(to_platform_device(dev))
44
45 #define MIXER_WIN_NR 3
46 #define MIXER_DEFAULT_WIN 0
47
48 struct hdmi_win_data {
49 dma_addr_t dma_addr;
50 dma_addr_t chroma_dma_addr;
51 uint32_t pixel_format;
52 unsigned int bpp;
53 unsigned int crtc_x;
54 unsigned int crtc_y;
55 unsigned int crtc_width;
56 unsigned int crtc_height;
57 unsigned int fb_x;
58 unsigned int fb_y;
59 unsigned int fb_width;
60 unsigned int fb_height;
61 unsigned int src_width;
62 unsigned int src_height;
63 unsigned int mode_width;
64 unsigned int mode_height;
65 unsigned int scan_flags;
66 bool enabled;
67 bool resume;
68 };
69
70 struct mixer_resources {
71 int irq;
72 void __iomem *mixer_regs;
73 void __iomem *vp_regs;
74 spinlock_t reg_slock;
75 struct clk *mixer;
76 struct clk *vp;
77 struct clk *sclk_mixer;
78 struct clk *sclk_hdmi;
79 struct clk *sclk_dac;
80 };
81
82 enum mixer_version_id {
83 MXR_VER_0_0_0_16,
84 MXR_VER_16_0_33_0,
85 MXR_VER_128_0_0_184,
86 };
87
88 struct mixer_context {
89 struct platform_device *pdev;
90 struct device *dev;
91 struct drm_device *drm_dev;
92 int pipe;
93 bool interlace;
94 bool powered;
95 bool vp_enabled;
96 u32 int_en;
97
98 struct mutex mixer_mutex;
99 struct mixer_resources mixer_res;
100 struct hdmi_win_data win_data[MIXER_WIN_NR];
101 enum mixer_version_id mxr_ver;
102 wait_queue_head_t wait_vsync_queue;
103 atomic_t wait_vsync_event;
104 };
105
106 struct mixer_drv_data {
107 enum mixer_version_id version;
108 bool is_vp_enabled;
109 };
110
111 static const u8 filter_y_horiz_tap8[] = {
112 0, -1, -1, -1, -1, -1, -1, -1,
113 -1, -1, -1, -1, -1, 0, 0, 0,
114 0, 2, 4, 5, 6, 6, 6, 6,
115 6, 5, 5, 4, 3, 2, 1, 1,
116 0, -6, -12, -16, -18, -20, -21, -20,
117 -20, -18, -16, -13, -10, -8, -5, -2,
118 127, 126, 125, 121, 114, 107, 99, 89,
119 79, 68, 57, 46, 35, 25, 16, 8,
120 };
121
122 static const u8 filter_y_vert_tap4[] = {
123 0, -3, -6, -8, -8, -8, -8, -7,
124 -6, -5, -4, -3, -2, -1, -1, 0,
125 127, 126, 124, 118, 111, 102, 92, 81,
126 70, 59, 48, 37, 27, 19, 11, 5,
127 0, 5, 11, 19, 27, 37, 48, 59,
128 70, 81, 92, 102, 111, 118, 124, 126,
129 0, 0, -1, -1, -2, -3, -4, -5,
130 -6, -7, -8, -8, -8, -8, -6, -3,
131 };
132
133 static const u8 filter_cr_horiz_tap4[] = {
134 0, -3, -6, -8, -8, -8, -8, -7,
135 -6, -5, -4, -3, -2, -1, -1, 0,
136 127, 126, 124, 118, 111, 102, 92, 81,
137 70, 59, 48, 37, 27, 19, 11, 5,
138 };
139
140 static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
141 {
142 return readl(res->vp_regs + reg_id);
143 }
144
145 static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id,
146 u32 val)
147 {
148 writel(val, res->vp_regs + reg_id);
149 }
150
151 static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id,
152 u32 val, u32 mask)
153 {
154 u32 old = vp_reg_read(res, reg_id);
155
156 val = (val & mask) | (old & ~mask);
157 writel(val, res->vp_regs + reg_id);
158 }
159
160 static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id)
161 {
162 return readl(res->mixer_regs + reg_id);
163 }
164
165 static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id,
166 u32 val)
167 {
168 writel(val, res->mixer_regs + reg_id);
169 }
170
171 static inline void mixer_reg_writemask(struct mixer_resources *res,
172 u32 reg_id, u32 val, u32 mask)
173 {
174 u32 old = mixer_reg_read(res, reg_id);
175
176 val = (val & mask) | (old & ~mask);
177 writel(val, res->mixer_regs + reg_id);
178 }
179
180 static void mixer_regs_dump(struct mixer_context *ctx)
181 {
182 #define DUMPREG(reg_id) \
183 do { \
184 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
185 (u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \
186 } while (0)
187
188 DUMPREG(MXR_STATUS);
189 DUMPREG(MXR_CFG);
190 DUMPREG(MXR_INT_EN);
191 DUMPREG(MXR_INT_STATUS);
192
193 DUMPREG(MXR_LAYER_CFG);
194 DUMPREG(MXR_VIDEO_CFG);
195
196 DUMPREG(MXR_GRAPHIC0_CFG);
197 DUMPREG(MXR_GRAPHIC0_BASE);
198 DUMPREG(MXR_GRAPHIC0_SPAN);
199 DUMPREG(MXR_GRAPHIC0_WH);
200 DUMPREG(MXR_GRAPHIC0_SXY);
201 DUMPREG(MXR_GRAPHIC0_DXY);
202
203 DUMPREG(MXR_GRAPHIC1_CFG);
204 DUMPREG(MXR_GRAPHIC1_BASE);
205 DUMPREG(MXR_GRAPHIC1_SPAN);
206 DUMPREG(MXR_GRAPHIC1_WH);
207 DUMPREG(MXR_GRAPHIC1_SXY);
208 DUMPREG(MXR_GRAPHIC1_DXY);
209 #undef DUMPREG
210 }
211
212 static void vp_regs_dump(struct mixer_context *ctx)
213 {
214 #define DUMPREG(reg_id) \
215 do { \
216 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
217 (u32) readl(ctx->mixer_res.vp_regs + reg_id)); \
218 } while (0)
219
220 DUMPREG(VP_ENABLE);
221 DUMPREG(VP_SRESET);
222 DUMPREG(VP_SHADOW_UPDATE);
223 DUMPREG(VP_FIELD_ID);
224 DUMPREG(VP_MODE);
225 DUMPREG(VP_IMG_SIZE_Y);
226 DUMPREG(VP_IMG_SIZE_C);
227 DUMPREG(VP_PER_RATE_CTRL);
228 DUMPREG(VP_TOP_Y_PTR);
229 DUMPREG(VP_BOT_Y_PTR);
230 DUMPREG(VP_TOP_C_PTR);
231 DUMPREG(VP_BOT_C_PTR);
232 DUMPREG(VP_ENDIAN_MODE);
233 DUMPREG(VP_SRC_H_POSITION);
234 DUMPREG(VP_SRC_V_POSITION);
235 DUMPREG(VP_SRC_WIDTH);
236 DUMPREG(VP_SRC_HEIGHT);
237 DUMPREG(VP_DST_H_POSITION);
238 DUMPREG(VP_DST_V_POSITION);
239 DUMPREG(VP_DST_WIDTH);
240 DUMPREG(VP_DST_HEIGHT);
241 DUMPREG(VP_H_RATIO);
242 DUMPREG(VP_V_RATIO);
243
244 #undef DUMPREG
245 }
246
247 static inline void vp_filter_set(struct mixer_resources *res,
248 int reg_id, const u8 *data, unsigned int size)
249 {
250 /* assure 4-byte align */
251 BUG_ON(size & 3);
252 for (; size; size -= 4, reg_id += 4, data += 4) {
253 u32 val = (data[0] << 24) | (data[1] << 16) |
254 (data[2] << 8) | data[3];
255 vp_reg_write(res, reg_id, val);
256 }
257 }
258
259 static void vp_default_filter(struct mixer_resources *res)
260 {
261 vp_filter_set(res, VP_POLY8_Y0_LL,
262 filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
263 vp_filter_set(res, VP_POLY4_Y0_LL,
264 filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
265 vp_filter_set(res, VP_POLY4_C0_LL,
266 filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
267 }
268
269 static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
270 {
271 struct mixer_resources *res = &ctx->mixer_res;
272
273 /* block update on vsync */
274 mixer_reg_writemask(res, MXR_STATUS, enable ?
275 MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
276
277 if (ctx->vp_enabled)
278 vp_reg_write(res, VP_SHADOW_UPDATE, enable ?
279 VP_SHADOW_UPDATE_ENABLE : 0);
280 }
281
282 static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height)
283 {
284 struct mixer_resources *res = &ctx->mixer_res;
285 u32 val;
286
287 /* choosing between interlace and progressive mode */
288 val = (ctx->interlace ? MXR_CFG_SCAN_INTERLACE :
289 MXR_CFG_SCAN_PROGRASSIVE);
290
291 if (ctx->mxr_ver != MXR_VER_128_0_0_184) {
292 /* choosing between proper HD and SD mode */
293 if (height <= 480)
294 val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
295 else if (height <= 576)
296 val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
297 else if (height <= 720)
298 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
299 else if (height <= 1080)
300 val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
301 else
302 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
303 }
304
305 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK);
306 }
307
308 static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
309 {
310 struct mixer_resources *res = &ctx->mixer_res;
311 u32 val;
312
313 if (height == 480) {
314 val = MXR_CFG_RGB601_0_255;
315 } else if (height == 576) {
316 val = MXR_CFG_RGB601_0_255;
317 } else if (height == 720) {
318 val = MXR_CFG_RGB709_16_235;
319 mixer_reg_write(res, MXR_CM_COEFF_Y,
320 (1 << 30) | (94 << 20) | (314 << 10) |
321 (32 << 0));
322 mixer_reg_write(res, MXR_CM_COEFF_CB,
323 (972 << 20) | (851 << 10) | (225 << 0));
324 mixer_reg_write(res, MXR_CM_COEFF_CR,
325 (225 << 20) | (820 << 10) | (1004 << 0));
326 } else if (height == 1080) {
327 val = MXR_CFG_RGB709_16_235;
328 mixer_reg_write(res, MXR_CM_COEFF_Y,
329 (1 << 30) | (94 << 20) | (314 << 10) |
330 (32 << 0));
331 mixer_reg_write(res, MXR_CM_COEFF_CB,
332 (972 << 20) | (851 << 10) | (225 << 0));
333 mixer_reg_write(res, MXR_CM_COEFF_CR,
334 (225 << 20) | (820 << 10) | (1004 << 0));
335 } else {
336 val = MXR_CFG_RGB709_16_235;
337 mixer_reg_write(res, MXR_CM_COEFF_Y,
338 (1 << 30) | (94 << 20) | (314 << 10) |
339 (32 << 0));
340 mixer_reg_write(res, MXR_CM_COEFF_CB,
341 (972 << 20) | (851 << 10) | (225 << 0));
342 mixer_reg_write(res, MXR_CM_COEFF_CR,
343 (225 << 20) | (820 << 10) | (1004 << 0));
344 }
345
346 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
347 }
348
349 static void mixer_cfg_layer(struct mixer_context *ctx, int win, bool enable)
350 {
351 struct mixer_resources *res = &ctx->mixer_res;
352 u32 val = enable ? ~0 : 0;
353
354 switch (win) {
355 case 0:
356 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
357 break;
358 case 1:
359 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
360 break;
361 case 2:
362 if (ctx->vp_enabled) {
363 vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
364 mixer_reg_writemask(res, MXR_CFG, val,
365 MXR_CFG_VP_ENABLE);
366 }
367 break;
368 }
369 }
370
371 static void mixer_run(struct mixer_context *ctx)
372 {
373 struct mixer_resources *res = &ctx->mixer_res;
374
375 mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
376
377 mixer_regs_dump(ctx);
378 }
379
380 static void mixer_stop(struct mixer_context *ctx)
381 {
382 struct mixer_resources *res = &ctx->mixer_res;
383 int timeout = 20;
384
385 mixer_reg_writemask(res, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
386
387 while (!(mixer_reg_read(res, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
388 --timeout)
389 usleep_range(10000, 12000);
390
391 mixer_regs_dump(ctx);
392 }
393
394 static void vp_video_buffer(struct mixer_context *ctx, int win)
395 {
396 struct mixer_resources *res = &ctx->mixer_res;
397 unsigned long flags;
398 struct hdmi_win_data *win_data;
399 unsigned int x_ratio, y_ratio;
400 unsigned int buf_num = 1;
401 dma_addr_t luma_addr[2], chroma_addr[2];
402 bool tiled_mode = false;
403 bool crcb_mode = false;
404 u32 val;
405
406 win_data = &ctx->win_data[win];
407
408 switch (win_data->pixel_format) {
409 case DRM_FORMAT_NV12MT:
410 tiled_mode = true;
411 case DRM_FORMAT_NV12:
412 crcb_mode = false;
413 buf_num = 2;
414 break;
415 /* TODO: single buffer format NV12, NV21 */
416 default:
417 /* ignore pixel format at disable time */
418 if (!win_data->dma_addr)
419 break;
420
421 DRM_ERROR("pixel format for vp is wrong [%d].\n",
422 win_data->pixel_format);
423 return;
424 }
425
426 /* scaling feature: (src << 16) / dst */
427 x_ratio = (win_data->src_width << 16) / win_data->crtc_width;
428 y_ratio = (win_data->src_height << 16) / win_data->crtc_height;
429
430 if (buf_num == 2) {
431 luma_addr[0] = win_data->dma_addr;
432 chroma_addr[0] = win_data->chroma_dma_addr;
433 } else {
434 luma_addr[0] = win_data->dma_addr;
435 chroma_addr[0] = win_data->dma_addr
436 + (win_data->fb_width * win_data->fb_height);
437 }
438
439 if (win_data->scan_flags & DRM_MODE_FLAG_INTERLACE) {
440 ctx->interlace = true;
441 if (tiled_mode) {
442 luma_addr[1] = luma_addr[0] + 0x40;
443 chroma_addr[1] = chroma_addr[0] + 0x40;
444 } else {
445 luma_addr[1] = luma_addr[0] + win_data->fb_width;
446 chroma_addr[1] = chroma_addr[0] + win_data->fb_width;
447 }
448 } else {
449 ctx->interlace = false;
450 luma_addr[1] = 0;
451 chroma_addr[1] = 0;
452 }
453
454 spin_lock_irqsave(&res->reg_slock, flags);
455 mixer_vsync_set_update(ctx, false);
456
457 /* interlace or progressive scan mode */
458 val = (ctx->interlace ? ~0 : 0);
459 vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP);
460
461 /* setup format */
462 val = (crcb_mode ? VP_MODE_NV21 : VP_MODE_NV12);
463 val |= (tiled_mode ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
464 vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK);
465
466 /* setting size of input image */
467 vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(win_data->fb_width) |
468 VP_IMG_VSIZE(win_data->fb_height));
469 /* chroma height has to reduced by 2 to avoid chroma distorions */
470 vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(win_data->fb_width) |
471 VP_IMG_VSIZE(win_data->fb_height / 2));
472
473 vp_reg_write(res, VP_SRC_WIDTH, win_data->src_width);
474 vp_reg_write(res, VP_SRC_HEIGHT, win_data->src_height);
475 vp_reg_write(res, VP_SRC_H_POSITION,
476 VP_SRC_H_POSITION_VAL(win_data->fb_x));
477 vp_reg_write(res, VP_SRC_V_POSITION, win_data->fb_y);
478
479 vp_reg_write(res, VP_DST_WIDTH, win_data->crtc_width);
480 vp_reg_write(res, VP_DST_H_POSITION, win_data->crtc_x);
481 if (ctx->interlace) {
482 vp_reg_write(res, VP_DST_HEIGHT, win_data->crtc_height / 2);
483 vp_reg_write(res, VP_DST_V_POSITION, win_data->crtc_y / 2);
484 } else {
485 vp_reg_write(res, VP_DST_HEIGHT, win_data->crtc_height);
486 vp_reg_write(res, VP_DST_V_POSITION, win_data->crtc_y);
487 }
488
489 vp_reg_write(res, VP_H_RATIO, x_ratio);
490 vp_reg_write(res, VP_V_RATIO, y_ratio);
491
492 vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
493
494 /* set buffer address to vp */
495 vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]);
496 vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]);
497 vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]);
498 vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]);
499
500 mixer_cfg_scan(ctx, win_data->mode_height);
501 mixer_cfg_rgb_fmt(ctx, win_data->mode_height);
502 mixer_cfg_layer(ctx, win, true);
503 mixer_run(ctx);
504
505 mixer_vsync_set_update(ctx, true);
506 spin_unlock_irqrestore(&res->reg_slock, flags);
507
508 vp_regs_dump(ctx);
509 }
510
511 static void mixer_layer_update(struct mixer_context *ctx)
512 {
513 struct mixer_resources *res = &ctx->mixer_res;
514
515 mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
516 }
517
518 static void mixer_graph_buffer(struct mixer_context *ctx, int win)
519 {
520 struct mixer_resources *res = &ctx->mixer_res;
521 unsigned long flags;
522 struct hdmi_win_data *win_data;
523 unsigned int x_ratio, y_ratio;
524 unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
525 dma_addr_t dma_addr;
526 unsigned int fmt;
527 u32 val;
528
529 win_data = &ctx->win_data[win];
530
531 #define RGB565 4
532 #define ARGB1555 5
533 #define ARGB4444 6
534 #define ARGB8888 7
535
536 switch (win_data->bpp) {
537 case 16:
538 fmt = ARGB4444;
539 break;
540 case 32:
541 fmt = ARGB8888;
542 break;
543 default:
544 fmt = ARGB8888;
545 }
546
547 /* 2x scaling feature */
548 x_ratio = 0;
549 y_ratio = 0;
550
551 dst_x_offset = win_data->crtc_x;
552 dst_y_offset = win_data->crtc_y;
553
554 /* converting dma address base and source offset */
555 dma_addr = win_data->dma_addr
556 + (win_data->fb_x * win_data->bpp >> 3)
557 + (win_data->fb_y * win_data->fb_width * win_data->bpp >> 3);
558 src_x_offset = 0;
559 src_y_offset = 0;
560
561 if (win_data->scan_flags & DRM_MODE_FLAG_INTERLACE)
562 ctx->interlace = true;
563 else
564 ctx->interlace = false;
565
566 spin_lock_irqsave(&res->reg_slock, flags);
567 mixer_vsync_set_update(ctx, false);
568
569 /* setup format */
570 mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
571 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
572
573 /* setup geometry */
574 mixer_reg_write(res, MXR_GRAPHIC_SPAN(win), win_data->fb_width);
575
576 /* setup display size */
577 if (ctx->mxr_ver == MXR_VER_128_0_0_184 &&
578 win == MIXER_DEFAULT_WIN) {
579 val = MXR_MXR_RES_HEIGHT(win_data->fb_height);
580 val |= MXR_MXR_RES_WIDTH(win_data->fb_width);
581 mixer_reg_write(res, MXR_RESOLUTION, val);
582 }
583
584 val = MXR_GRP_WH_WIDTH(win_data->crtc_width);
585 val |= MXR_GRP_WH_HEIGHT(win_data->crtc_height);
586 val |= MXR_GRP_WH_H_SCALE(x_ratio);
587 val |= MXR_GRP_WH_V_SCALE(y_ratio);
588 mixer_reg_write(res, MXR_GRAPHIC_WH(win), val);
589
590 /* setup offsets in source image */
591 val = MXR_GRP_SXY_SX(src_x_offset);
592 val |= MXR_GRP_SXY_SY(src_y_offset);
593 mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val);
594
595 /* setup offsets in display image */
596 val = MXR_GRP_DXY_DX(dst_x_offset);
597 val |= MXR_GRP_DXY_DY(dst_y_offset);
598 mixer_reg_write(res, MXR_GRAPHIC_DXY(win), val);
599
600 /* set buffer address to mixer */
601 mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr);
602
603 mixer_cfg_scan(ctx, win_data->mode_height);
604 mixer_cfg_rgb_fmt(ctx, win_data->mode_height);
605 mixer_cfg_layer(ctx, win, true);
606
607 /* layer update mandatory for mixer 16.0.33.0 */
608 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
609 ctx->mxr_ver == MXR_VER_128_0_0_184)
610 mixer_layer_update(ctx);
611
612 mixer_run(ctx);
613
614 mixer_vsync_set_update(ctx, true);
615 spin_unlock_irqrestore(&res->reg_slock, flags);
616 }
617
618 static void vp_win_reset(struct mixer_context *ctx)
619 {
620 struct mixer_resources *res = &ctx->mixer_res;
621 int tries = 100;
622
623 vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING);
624 for (tries = 100; tries; --tries) {
625 /* waiting until VP_SRESET_PROCESSING is 0 */
626 if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING)
627 break;
628 usleep_range(10000, 12000);
629 }
630 WARN(tries == 0, "failed to reset Video Processor\n");
631 }
632
633 static void mixer_win_reset(struct mixer_context *ctx)
634 {
635 struct mixer_resources *res = &ctx->mixer_res;
636 unsigned long flags;
637 u32 val; /* value stored to register */
638
639 spin_lock_irqsave(&res->reg_slock, flags);
640 mixer_vsync_set_update(ctx, false);
641
642 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
643
644 /* set output in RGB888 mode */
645 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
646
647 /* 16 beat burst in DMA */
648 mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
649 MXR_STATUS_BURST_MASK);
650
651 /* setting default layer priority: layer1 > layer0 > video
652 * because typical usage scenario would be
653 * layer1 - OSD
654 * layer0 - framebuffer
655 * video - video overlay
656 */
657 val = MXR_LAYER_CFG_GRP1_VAL(3);
658 val |= MXR_LAYER_CFG_GRP0_VAL(2);
659 if (ctx->vp_enabled)
660 val |= MXR_LAYER_CFG_VP_VAL(1);
661 mixer_reg_write(res, MXR_LAYER_CFG, val);
662
663 /* setting background color */
664 mixer_reg_write(res, MXR_BG_COLOR0, 0x008080);
665 mixer_reg_write(res, MXR_BG_COLOR1, 0x008080);
666 mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
667
668 /* setting graphical layers */
669 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
670 val |= MXR_GRP_CFG_WIN_BLEND_EN;
671 val |= MXR_GRP_CFG_ALPHA_VAL(0xff); /* non-transparent alpha */
672
673 /* Don't blend layer 0 onto the mixer background */
674 mixer_reg_write(res, MXR_GRAPHIC_CFG(0), val);
675
676 /* Blend layer 1 into layer 0 */
677 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
678 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
679 mixer_reg_write(res, MXR_GRAPHIC_CFG(1), val);
680
681 /* setting video layers */
682 val = MXR_GRP_CFG_ALPHA_VAL(0);
683 mixer_reg_write(res, MXR_VIDEO_CFG, val);
684
685 if (ctx->vp_enabled) {
686 /* configuration of Video Processor Registers */
687 vp_win_reset(ctx);
688 vp_default_filter(res);
689 }
690
691 /* disable all layers */
692 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
693 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
694 if (ctx->vp_enabled)
695 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
696
697 mixer_vsync_set_update(ctx, true);
698 spin_unlock_irqrestore(&res->reg_slock, flags);
699 }
700
701 static irqreturn_t mixer_irq_handler(int irq, void *arg)
702 {
703 struct mixer_context *ctx = arg;
704 struct mixer_resources *res = &ctx->mixer_res;
705 u32 val, base, shadow;
706
707 spin_lock(&res->reg_slock);
708
709 /* read interrupt status for handling and clearing flags for VSYNC */
710 val = mixer_reg_read(res, MXR_INT_STATUS);
711
712 /* handling VSYNC */
713 if (val & MXR_INT_STATUS_VSYNC) {
714 /* interlace scan need to check shadow register */
715 if (ctx->interlace) {
716 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0));
717 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0));
718 if (base != shadow)
719 goto out;
720
721 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(1));
722 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1));
723 if (base != shadow)
724 goto out;
725 }
726
727 drm_handle_vblank(ctx->drm_dev, ctx->pipe);
728 exynos_drm_crtc_finish_pageflip(ctx->drm_dev, ctx->pipe);
729
730 /* set wait vsync event to zero and wake up queue. */
731 if (atomic_read(&ctx->wait_vsync_event)) {
732 atomic_set(&ctx->wait_vsync_event, 0);
733 wake_up(&ctx->wait_vsync_queue);
734 }
735 }
736
737 out:
738 /* clear interrupts */
739 if (~val & MXR_INT_EN_VSYNC) {
740 /* vsync interrupt use different bit for read and clear */
741 val &= ~MXR_INT_EN_VSYNC;
742 val |= MXR_INT_CLEAR_VSYNC;
743 }
744 mixer_reg_write(res, MXR_INT_STATUS, val);
745
746 spin_unlock(&res->reg_slock);
747
748 return IRQ_HANDLED;
749 }
750
751 static int mixer_resources_init(struct mixer_context *mixer_ctx)
752 {
753 struct device *dev = &mixer_ctx->pdev->dev;
754 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
755 struct resource *res;
756 int ret;
757
758 spin_lock_init(&mixer_res->reg_slock);
759
760 mixer_res->mixer = devm_clk_get(dev, "mixer");
761 if (IS_ERR(mixer_res->mixer)) {
762 dev_err(dev, "failed to get clock 'mixer'\n");
763 return -ENODEV;
764 }
765
766 mixer_res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
767 if (IS_ERR(mixer_res->sclk_hdmi)) {
768 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
769 return -ENODEV;
770 }
771 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
772 if (res == NULL) {
773 dev_err(dev, "get memory resource failed.\n");
774 return -ENXIO;
775 }
776
777 mixer_res->mixer_regs = devm_ioremap(dev, res->start,
778 resource_size(res));
779 if (mixer_res->mixer_regs == NULL) {
780 dev_err(dev, "register mapping failed.\n");
781 return -ENXIO;
782 }
783
784 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0);
785 if (res == NULL) {
786 dev_err(dev, "get interrupt resource failed.\n");
787 return -ENXIO;
788 }
789
790 ret = devm_request_irq(dev, res->start, mixer_irq_handler,
791 0, "drm_mixer", mixer_ctx);
792 if (ret) {
793 dev_err(dev, "request interrupt failed.\n");
794 return ret;
795 }
796 mixer_res->irq = res->start;
797
798 return 0;
799 }
800
801 static int vp_resources_init(struct mixer_context *mixer_ctx)
802 {
803 struct device *dev = &mixer_ctx->pdev->dev;
804 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
805 struct resource *res;
806
807 mixer_res->vp = devm_clk_get(dev, "vp");
808 if (IS_ERR(mixer_res->vp)) {
809 dev_err(dev, "failed to get clock 'vp'\n");
810 return -ENODEV;
811 }
812 mixer_res->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
813 if (IS_ERR(mixer_res->sclk_mixer)) {
814 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
815 return -ENODEV;
816 }
817 mixer_res->sclk_dac = devm_clk_get(dev, "sclk_dac");
818 if (IS_ERR(mixer_res->sclk_dac)) {
819 dev_err(dev, "failed to get clock 'sclk_dac'\n");
820 return -ENODEV;
821 }
822
823 if (mixer_res->sclk_hdmi)
824 clk_set_parent(mixer_res->sclk_mixer, mixer_res->sclk_hdmi);
825
826 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
827 if (res == NULL) {
828 dev_err(dev, "get memory resource failed.\n");
829 return -ENXIO;
830 }
831
832 mixer_res->vp_regs = devm_ioremap(dev, res->start,
833 resource_size(res));
834 if (mixer_res->vp_regs == NULL) {
835 dev_err(dev, "register mapping failed.\n");
836 return -ENXIO;
837 }
838
839 return 0;
840 }
841
842 static int mixer_initialize(struct exynos_drm_manager *mgr,
843 struct drm_device *drm_dev)
844 {
845 int ret;
846 struct mixer_context *mixer_ctx = mgr->ctx;
847 struct exynos_drm_private *priv;
848 priv = drm_dev->dev_private;
849
850 mgr->drm_dev = mixer_ctx->drm_dev = drm_dev;
851 mgr->pipe = mixer_ctx->pipe = priv->pipe++;
852
853 /* acquire resources: regs, irqs, clocks */
854 ret = mixer_resources_init(mixer_ctx);
855 if (ret) {
856 DRM_ERROR("mixer_resources_init failed ret=%d\n", ret);
857 return ret;
858 }
859
860 if (mixer_ctx->vp_enabled) {
861 /* acquire vp resources: regs, irqs, clocks */
862 ret = vp_resources_init(mixer_ctx);
863 if (ret) {
864 DRM_ERROR("vp_resources_init failed ret=%d\n", ret);
865 return ret;
866 }
867 }
868
869 if (!is_drm_iommu_supported(mixer_ctx->drm_dev))
870 return 0;
871
872 return drm_iommu_attach_device(mixer_ctx->drm_dev, mixer_ctx->dev);
873 }
874
875 static void mixer_mgr_remove(struct exynos_drm_manager *mgr)
876 {
877 struct mixer_context *mixer_ctx = mgr->ctx;
878
879 if (is_drm_iommu_supported(mixer_ctx->drm_dev))
880 drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev);
881 }
882
883 static int mixer_enable_vblank(struct exynos_drm_manager *mgr)
884 {
885 struct mixer_context *mixer_ctx = mgr->ctx;
886 struct mixer_resources *res = &mixer_ctx->mixer_res;
887
888 if (!mixer_ctx->powered) {
889 mixer_ctx->int_en |= MXR_INT_EN_VSYNC;
890 return 0;
891 }
892
893 /* enable vsync interrupt */
894 mixer_reg_writemask(res, MXR_INT_EN, MXR_INT_EN_VSYNC,
895 MXR_INT_EN_VSYNC);
896
897 return 0;
898 }
899
900 static void mixer_disable_vblank(struct exynos_drm_manager *mgr)
901 {
902 struct mixer_context *mixer_ctx = mgr->ctx;
903 struct mixer_resources *res = &mixer_ctx->mixer_res;
904
905 /* disable vsync interrupt */
906 mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
907 }
908
909 static void mixer_win_mode_set(struct exynos_drm_manager *mgr,
910 struct exynos_drm_overlay *overlay)
911 {
912 struct mixer_context *mixer_ctx = mgr->ctx;
913 struct hdmi_win_data *win_data;
914 int win;
915
916 if (!overlay) {
917 DRM_ERROR("overlay is NULL\n");
918 return;
919 }
920
921 DRM_DEBUG_KMS("set [%d]x[%d] at (%d,%d) to [%d]x[%d] at (%d,%d)\n",
922 overlay->fb_width, overlay->fb_height,
923 overlay->fb_x, overlay->fb_y,
924 overlay->crtc_width, overlay->crtc_height,
925 overlay->crtc_x, overlay->crtc_y);
926
927 win = overlay->zpos;
928 if (win == DEFAULT_ZPOS)
929 win = MIXER_DEFAULT_WIN;
930
931 if (win < 0 || win >= MIXER_WIN_NR) {
932 DRM_ERROR("mixer window[%d] is wrong\n", win);
933 return;
934 }
935
936 win_data = &mixer_ctx->win_data[win];
937
938 win_data->dma_addr = overlay->dma_addr[0];
939 win_data->chroma_dma_addr = overlay->dma_addr[1];
940 win_data->pixel_format = overlay->pixel_format;
941 win_data->bpp = overlay->bpp;
942
943 win_data->crtc_x = overlay->crtc_x;
944 win_data->crtc_y = overlay->crtc_y;
945 win_data->crtc_width = overlay->crtc_width;
946 win_data->crtc_height = overlay->crtc_height;
947
948 win_data->fb_x = overlay->fb_x;
949 win_data->fb_y = overlay->fb_y;
950 win_data->fb_width = overlay->fb_width;
951 win_data->fb_height = overlay->fb_height;
952 win_data->src_width = overlay->src_width;
953 win_data->src_height = overlay->src_height;
954
955 win_data->mode_width = overlay->mode_width;
956 win_data->mode_height = overlay->mode_height;
957
958 win_data->scan_flags = overlay->scan_flag;
959 }
960
961 static void mixer_win_commit(struct exynos_drm_manager *mgr, int zpos)
962 {
963 struct mixer_context *mixer_ctx = mgr->ctx;
964 int win = zpos == DEFAULT_ZPOS ? MIXER_DEFAULT_WIN : zpos;
965
966 DRM_DEBUG_KMS("win: %d\n", win);
967
968 mutex_lock(&mixer_ctx->mixer_mutex);
969 if (!mixer_ctx->powered) {
970 mutex_unlock(&mixer_ctx->mixer_mutex);
971 return;
972 }
973 mutex_unlock(&mixer_ctx->mixer_mutex);
974
975 if (win > 1 && mixer_ctx->vp_enabled)
976 vp_video_buffer(mixer_ctx, win);
977 else
978 mixer_graph_buffer(mixer_ctx, win);
979
980 mixer_ctx->win_data[win].enabled = true;
981 }
982
983 static void mixer_win_disable(struct exynos_drm_manager *mgr, int zpos)
984 {
985 struct mixer_context *mixer_ctx = mgr->ctx;
986 struct mixer_resources *res = &mixer_ctx->mixer_res;
987 int win = zpos == DEFAULT_ZPOS ? MIXER_DEFAULT_WIN : zpos;
988 unsigned long flags;
989
990 DRM_DEBUG_KMS("win: %d\n", win);
991
992 mutex_lock(&mixer_ctx->mixer_mutex);
993 if (!mixer_ctx->powered) {
994 mutex_unlock(&mixer_ctx->mixer_mutex);
995 mixer_ctx->win_data[win].resume = false;
996 return;
997 }
998 mutex_unlock(&mixer_ctx->mixer_mutex);
999
1000 spin_lock_irqsave(&res->reg_slock, flags);
1001 mixer_vsync_set_update(mixer_ctx, false);
1002
1003 mixer_cfg_layer(mixer_ctx, win, false);
1004
1005 mixer_vsync_set_update(mixer_ctx, true);
1006 spin_unlock_irqrestore(&res->reg_slock, flags);
1007
1008 mixer_ctx->win_data[win].enabled = false;
1009 }
1010
1011 static void mixer_wait_for_vblank(struct exynos_drm_manager *mgr)
1012 {
1013 struct mixer_context *mixer_ctx = mgr->ctx;
1014
1015 mutex_lock(&mixer_ctx->mixer_mutex);
1016 if (!mixer_ctx->powered) {
1017 mutex_unlock(&mixer_ctx->mixer_mutex);
1018 return;
1019 }
1020 mutex_unlock(&mixer_ctx->mixer_mutex);
1021
1022 drm_vblank_get(mgr->crtc->dev, mixer_ctx->pipe);
1023
1024 atomic_set(&mixer_ctx->wait_vsync_event, 1);
1025
1026 /*
1027 * wait for MIXER to signal VSYNC interrupt or return after
1028 * timeout which is set to 50ms (refresh rate of 20).
1029 */
1030 if (!wait_event_timeout(mixer_ctx->wait_vsync_queue,
1031 !atomic_read(&mixer_ctx->wait_vsync_event),
1032 HZ/20))
1033 DRM_DEBUG_KMS("vblank wait timed out.\n");
1034
1035 drm_vblank_put(mgr->crtc->dev, mixer_ctx->pipe);
1036 }
1037
1038 static void mixer_window_suspend(struct exynos_drm_manager *mgr)
1039 {
1040 struct mixer_context *ctx = mgr->ctx;
1041 struct hdmi_win_data *win_data;
1042 int i;
1043
1044 for (i = 0; i < MIXER_WIN_NR; i++) {
1045 win_data = &ctx->win_data[i];
1046 win_data->resume = win_data->enabled;
1047 mixer_win_disable(mgr, i);
1048 }
1049 mixer_wait_for_vblank(mgr);
1050 }
1051
1052 static void mixer_window_resume(struct exynos_drm_manager *mgr)
1053 {
1054 struct mixer_context *ctx = mgr->ctx;
1055 struct hdmi_win_data *win_data;
1056 int i;
1057
1058 for (i = 0; i < MIXER_WIN_NR; i++) {
1059 win_data = &ctx->win_data[i];
1060 win_data->enabled = win_data->resume;
1061 win_data->resume = false;
1062 if (win_data->enabled)
1063 mixer_win_commit(mgr, i);
1064 }
1065 }
1066
1067 static void mixer_poweron(struct exynos_drm_manager *mgr)
1068 {
1069 struct mixer_context *ctx = mgr->ctx;
1070 struct mixer_resources *res = &ctx->mixer_res;
1071
1072 mutex_lock(&ctx->mixer_mutex);
1073 if (ctx->powered) {
1074 mutex_unlock(&ctx->mixer_mutex);
1075 return;
1076 }
1077
1078 mutex_unlock(&ctx->mixer_mutex);
1079
1080 pm_runtime_get_sync(ctx->dev);
1081
1082 clk_prepare_enable(res->mixer);
1083 if (ctx->vp_enabled) {
1084 clk_prepare_enable(res->vp);
1085 clk_prepare_enable(res->sclk_mixer);
1086 }
1087
1088 mutex_lock(&ctx->mixer_mutex);
1089 ctx->powered = true;
1090 mutex_unlock(&ctx->mixer_mutex);
1091
1092 mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
1093
1094 mixer_reg_write(res, MXR_INT_EN, ctx->int_en);
1095 mixer_win_reset(ctx);
1096
1097 mixer_window_resume(mgr);
1098 }
1099
1100 static void mixer_poweroff(struct exynos_drm_manager *mgr)
1101 {
1102 struct mixer_context *ctx = mgr->ctx;
1103 struct mixer_resources *res = &ctx->mixer_res;
1104
1105 mutex_lock(&ctx->mixer_mutex);
1106 if (!ctx->powered) {
1107 mutex_unlock(&ctx->mixer_mutex);
1108 return;
1109 }
1110 mutex_unlock(&ctx->mixer_mutex);
1111
1112 mixer_stop(ctx);
1113 mixer_window_suspend(mgr);
1114
1115 ctx->int_en = mixer_reg_read(res, MXR_INT_EN);
1116
1117 mutex_lock(&ctx->mixer_mutex);
1118 ctx->powered = false;
1119 mutex_unlock(&ctx->mixer_mutex);
1120
1121 clk_disable_unprepare(res->mixer);
1122 if (ctx->vp_enabled) {
1123 clk_disable_unprepare(res->vp);
1124 clk_disable_unprepare(res->sclk_mixer);
1125 }
1126
1127 pm_runtime_put_sync(ctx->dev);
1128 }
1129
1130 static void mixer_dpms(struct exynos_drm_manager *mgr, int mode)
1131 {
1132 switch (mode) {
1133 case DRM_MODE_DPMS_ON:
1134 mixer_poweron(mgr);
1135 break;
1136 case DRM_MODE_DPMS_STANDBY:
1137 case DRM_MODE_DPMS_SUSPEND:
1138 case DRM_MODE_DPMS_OFF:
1139 mixer_poweroff(mgr);
1140 break;
1141 default:
1142 DRM_DEBUG_KMS("unknown dpms mode: %d\n", mode);
1143 break;
1144 }
1145 }
1146
1147 /* Only valid for Mixer version 16.0.33.0 */
1148 int mixer_check_mode(struct drm_display_mode *mode)
1149 {
1150 u32 w, h;
1151
1152 w = mode->hdisplay;
1153 h = mode->vdisplay;
1154
1155 DRM_DEBUG_KMS("xres=%d, yres=%d, refresh=%d, intl=%d\n",
1156 mode->hdisplay, mode->vdisplay, mode->vrefresh,
1157 (mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0);
1158
1159 if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1160 (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1161 (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1162 return 0;
1163
1164 return -EINVAL;
1165 }
1166
1167 static struct exynos_drm_manager_ops mixer_manager_ops = {
1168 .dpms = mixer_dpms,
1169 .enable_vblank = mixer_enable_vblank,
1170 .disable_vblank = mixer_disable_vblank,
1171 .wait_for_vblank = mixer_wait_for_vblank,
1172 .win_mode_set = mixer_win_mode_set,
1173 .win_commit = mixer_win_commit,
1174 .win_disable = mixer_win_disable,
1175 };
1176
1177 static struct exynos_drm_manager mixer_manager = {
1178 .type = EXYNOS_DISPLAY_TYPE_HDMI,
1179 .ops = &mixer_manager_ops,
1180 };
1181
1182 static struct mixer_drv_data exynos5420_mxr_drv_data = {
1183 .version = MXR_VER_128_0_0_184,
1184 .is_vp_enabled = 0,
1185 };
1186
1187 static struct mixer_drv_data exynos5250_mxr_drv_data = {
1188 .version = MXR_VER_16_0_33_0,
1189 .is_vp_enabled = 0,
1190 };
1191
1192 static struct mixer_drv_data exynos4210_mxr_drv_data = {
1193 .version = MXR_VER_0_0_0_16,
1194 .is_vp_enabled = 1,
1195 };
1196
1197 static struct platform_device_id mixer_driver_types[] = {
1198 {
1199 .name = "s5p-mixer",
1200 .driver_data = (unsigned long)&exynos4210_mxr_drv_data,
1201 }, {
1202 .name = "exynos5-mixer",
1203 .driver_data = (unsigned long)&exynos5250_mxr_drv_data,
1204 }, {
1205 /* end node */
1206 }
1207 };
1208
1209 static struct of_device_id mixer_match_types[] = {
1210 {
1211 .compatible = "samsung,exynos5-mixer",
1212 .data = &exynos5250_mxr_drv_data,
1213 }, {
1214 .compatible = "samsung,exynos5250-mixer",
1215 .data = &exynos5250_mxr_drv_data,
1216 }, {
1217 .compatible = "samsung,exynos5420-mixer",
1218 .data = &exynos5420_mxr_drv_data,
1219 }, {
1220 /* end node */
1221 }
1222 };
1223
1224 static int mixer_bind(struct device *dev, struct device *manager, void *data)
1225 {
1226 struct platform_device *pdev = to_platform_device(dev);
1227 struct drm_device *drm_dev = data;
1228 struct mixer_context *ctx;
1229 struct mixer_drv_data *drv;
1230 int ret;
1231
1232 dev_info(dev, "probe start\n");
1233
1234 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1235 if (!ctx) {
1236 DRM_ERROR("failed to alloc mixer context.\n");
1237 return -ENOMEM;
1238 }
1239
1240 mutex_init(&ctx->mixer_mutex);
1241
1242 if (dev->of_node) {
1243 const struct of_device_id *match;
1244 match = of_match_node(mixer_match_types, dev->of_node);
1245 drv = (struct mixer_drv_data *)match->data;
1246 } else {
1247 drv = (struct mixer_drv_data *)
1248 platform_get_device_id(pdev)->driver_data;
1249 }
1250
1251 ctx->pdev = pdev;
1252 ctx->dev = dev;
1253 ctx->vp_enabled = drv->is_vp_enabled;
1254 ctx->mxr_ver = drv->version;
1255 init_waitqueue_head(&ctx->wait_vsync_queue);
1256 atomic_set(&ctx->wait_vsync_event, 0);
1257
1258 mixer_manager.ctx = ctx;
1259 ret = mixer_initialize(&mixer_manager, drm_dev);
1260 if (ret)
1261 return ret;
1262
1263 platform_set_drvdata(pdev, &mixer_manager);
1264 ret = exynos_drm_crtc_create(&mixer_manager);
1265 if (ret) {
1266 mixer_mgr_remove(&mixer_manager);
1267 return ret;
1268 }
1269
1270 pm_runtime_enable(dev);
1271
1272 return 0;
1273 }
1274
1275 static void mixer_unbind(struct device *dev, struct device *master, void *data)
1276 {
1277 struct exynos_drm_manager *mgr = dev_get_drvdata(dev);
1278 struct drm_crtc *crtc = mgr->crtc;
1279
1280 dev_info(dev, "remove successful\n");
1281
1282 mixer_mgr_remove(mgr);
1283
1284 pm_runtime_disable(dev);
1285
1286 crtc->funcs->destroy(crtc);
1287 }
1288
1289 static const struct component_ops mixer_component_ops = {
1290 .bind = mixer_bind,
1291 .unbind = mixer_unbind,
1292 };
1293
1294 static int mixer_probe(struct platform_device *pdev)
1295 {
1296 int ret;
1297
1298 ret = exynos_drm_component_add(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC,
1299 mixer_manager.type);
1300 if (ret)
1301 return ret;
1302
1303 ret = component_add(&pdev->dev, &mixer_component_ops);
1304 if (ret)
1305 exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);
1306
1307 return ret;
1308 }
1309
1310 static int mixer_remove(struct platform_device *pdev)
1311 {
1312 component_del(&pdev->dev, &mixer_component_ops);
1313 exynos_drm_component_del(&pdev->dev, EXYNOS_DEVICE_TYPE_CRTC);
1314
1315 return 0;
1316 }
1317
1318 struct platform_driver mixer_driver = {
1319 .driver = {
1320 .name = "exynos-mixer",
1321 .owner = THIS_MODULE,
1322 .of_match_table = mixer_match_types,
1323 },
1324 .probe = mixer_probe,
1325 .remove = mixer_remove,
1326 .id_table = mixer_driver_types,
1327 };
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