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[mirror_ubuntu-artful-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/of_device.h>
35 #include <linux/component.h>
36
37 #include <drm/exynos_drm.h>
38
39 #include "exynos_drm_drv.h"
40 #include "exynos_drm_crtc.h"
41 #include "exynos_drm_fb.h"
42 #include "exynos_drm_plane.h"
43 #include "exynos_drm_iommu.h"
44
45 #define MIXER_WIN_NR 3
46 #define VP_DEFAULT_WIN 2
47
48 /* The pixelformats that are natively supported by the mixer. */
49 #define MXR_FORMAT_RGB565 4
50 #define MXR_FORMAT_ARGB1555 5
51 #define MXR_FORMAT_ARGB4444 6
52 #define MXR_FORMAT_ARGB8888 7
53
54 struct mixer_resources {
55 int irq;
56 void __iomem *mixer_regs;
57 void __iomem *vp_regs;
58 spinlock_t reg_slock;
59 struct clk *mixer;
60 struct clk *vp;
61 struct clk *hdmi;
62 struct clk *sclk_mixer;
63 struct clk *sclk_hdmi;
64 struct clk *mout_mixer;
65 };
66
67 enum mixer_version_id {
68 MXR_VER_0_0_0_16,
69 MXR_VER_16_0_33_0,
70 MXR_VER_128_0_0_184,
71 };
72
73 enum mixer_flag_bits {
74 MXR_BIT_POWERED,
75 MXR_BIT_VSYNC,
76 MXR_BIT_INTERLACE,
77 MXR_BIT_VP_ENABLED,
78 MXR_BIT_HAS_SCLK,
79 };
80
81 static const uint32_t mixer_formats[] = {
82 DRM_FORMAT_XRGB4444,
83 DRM_FORMAT_ARGB4444,
84 DRM_FORMAT_XRGB1555,
85 DRM_FORMAT_ARGB1555,
86 DRM_FORMAT_RGB565,
87 DRM_FORMAT_XRGB8888,
88 DRM_FORMAT_ARGB8888,
89 };
90
91 static const uint32_t vp_formats[] = {
92 DRM_FORMAT_NV12,
93 DRM_FORMAT_NV21,
94 };
95
96 struct mixer_context {
97 struct platform_device *pdev;
98 struct device *dev;
99 struct drm_device *drm_dev;
100 struct exynos_drm_crtc *crtc;
101 struct exynos_drm_plane planes[MIXER_WIN_NR];
102 int pipe;
103 unsigned long flags;
104
105 struct mixer_resources mixer_res;
106 enum mixer_version_id mxr_ver;
107 };
108
109 struct mixer_drv_data {
110 enum mixer_version_id version;
111 bool is_vp_enabled;
112 bool has_sclk;
113 };
114
115 static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
116 {
117 .zpos = 0,
118 .type = DRM_PLANE_TYPE_PRIMARY,
119 .pixel_formats = mixer_formats,
120 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
121 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
122 EXYNOS_DRM_PLANE_CAP_ZPOS,
123 }, {
124 .zpos = 1,
125 .type = DRM_PLANE_TYPE_CURSOR,
126 .pixel_formats = mixer_formats,
127 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
128 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
129 EXYNOS_DRM_PLANE_CAP_ZPOS,
130 }, {
131 .zpos = 2,
132 .type = DRM_PLANE_TYPE_OVERLAY,
133 .pixel_formats = vp_formats,
134 .num_pixel_formats = ARRAY_SIZE(vp_formats),
135 .capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
136 EXYNOS_DRM_PLANE_CAP_ZPOS,
137 },
138 };
139
140 static const u8 filter_y_horiz_tap8[] = {
141 0, -1, -1, -1, -1, -1, -1, -1,
142 -1, -1, -1, -1, -1, 0, 0, 0,
143 0, 2, 4, 5, 6, 6, 6, 6,
144 6, 5, 5, 4, 3, 2, 1, 1,
145 0, -6, -12, -16, -18, -20, -21, -20,
146 -20, -18, -16, -13, -10, -8, -5, -2,
147 127, 126, 125, 121, 114, 107, 99, 89,
148 79, 68, 57, 46, 35, 25, 16, 8,
149 };
150
151 static const u8 filter_y_vert_tap4[] = {
152 0, -3, -6, -8, -8, -8, -8, -7,
153 -6, -5, -4, -3, -2, -1, -1, 0,
154 127, 126, 124, 118, 111, 102, 92, 81,
155 70, 59, 48, 37, 27, 19, 11, 5,
156 0, 5, 11, 19, 27, 37, 48, 59,
157 70, 81, 92, 102, 111, 118, 124, 126,
158 0, 0, -1, -1, -2, -3, -4, -5,
159 -6, -7, -8, -8, -8, -8, -6, -3,
160 };
161
162 static const u8 filter_cr_horiz_tap4[] = {
163 0, -3, -6, -8, -8, -8, -8, -7,
164 -6, -5, -4, -3, -2, -1, -1, 0,
165 127, 126, 124, 118, 111, 102, 92, 81,
166 70, 59, 48, 37, 27, 19, 11, 5,
167 };
168
169 static inline bool is_alpha_format(unsigned int pixel_format)
170 {
171 switch (pixel_format) {
172 case DRM_FORMAT_ARGB8888:
173 case DRM_FORMAT_ARGB1555:
174 case DRM_FORMAT_ARGB4444:
175 return true;
176 default:
177 return false;
178 }
179 }
180
181 static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
182 {
183 return readl(res->vp_regs + reg_id);
184 }
185
186 static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id,
187 u32 val)
188 {
189 writel(val, res->vp_regs + reg_id);
190 }
191
192 static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id,
193 u32 val, u32 mask)
194 {
195 u32 old = vp_reg_read(res, reg_id);
196
197 val = (val & mask) | (old & ~mask);
198 writel(val, res->vp_regs + reg_id);
199 }
200
201 static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id)
202 {
203 return readl(res->mixer_regs + reg_id);
204 }
205
206 static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id,
207 u32 val)
208 {
209 writel(val, res->mixer_regs + reg_id);
210 }
211
212 static inline void mixer_reg_writemask(struct mixer_resources *res,
213 u32 reg_id, u32 val, u32 mask)
214 {
215 u32 old = mixer_reg_read(res, reg_id);
216
217 val = (val & mask) | (old & ~mask);
218 writel(val, res->mixer_regs + reg_id);
219 }
220
221 static void mixer_regs_dump(struct mixer_context *ctx)
222 {
223 #define DUMPREG(reg_id) \
224 do { \
225 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
226 (u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \
227 } while (0)
228
229 DUMPREG(MXR_STATUS);
230 DUMPREG(MXR_CFG);
231 DUMPREG(MXR_INT_EN);
232 DUMPREG(MXR_INT_STATUS);
233
234 DUMPREG(MXR_LAYER_CFG);
235 DUMPREG(MXR_VIDEO_CFG);
236
237 DUMPREG(MXR_GRAPHIC0_CFG);
238 DUMPREG(MXR_GRAPHIC0_BASE);
239 DUMPREG(MXR_GRAPHIC0_SPAN);
240 DUMPREG(MXR_GRAPHIC0_WH);
241 DUMPREG(MXR_GRAPHIC0_SXY);
242 DUMPREG(MXR_GRAPHIC0_DXY);
243
244 DUMPREG(MXR_GRAPHIC1_CFG);
245 DUMPREG(MXR_GRAPHIC1_BASE);
246 DUMPREG(MXR_GRAPHIC1_SPAN);
247 DUMPREG(MXR_GRAPHIC1_WH);
248 DUMPREG(MXR_GRAPHIC1_SXY);
249 DUMPREG(MXR_GRAPHIC1_DXY);
250 #undef DUMPREG
251 }
252
253 static void vp_regs_dump(struct mixer_context *ctx)
254 {
255 #define DUMPREG(reg_id) \
256 do { \
257 DRM_DEBUG_KMS(#reg_id " = %08x\n", \
258 (u32) readl(ctx->mixer_res.vp_regs + reg_id)); \
259 } while (0)
260
261 DUMPREG(VP_ENABLE);
262 DUMPREG(VP_SRESET);
263 DUMPREG(VP_SHADOW_UPDATE);
264 DUMPREG(VP_FIELD_ID);
265 DUMPREG(VP_MODE);
266 DUMPREG(VP_IMG_SIZE_Y);
267 DUMPREG(VP_IMG_SIZE_C);
268 DUMPREG(VP_PER_RATE_CTRL);
269 DUMPREG(VP_TOP_Y_PTR);
270 DUMPREG(VP_BOT_Y_PTR);
271 DUMPREG(VP_TOP_C_PTR);
272 DUMPREG(VP_BOT_C_PTR);
273 DUMPREG(VP_ENDIAN_MODE);
274 DUMPREG(VP_SRC_H_POSITION);
275 DUMPREG(VP_SRC_V_POSITION);
276 DUMPREG(VP_SRC_WIDTH);
277 DUMPREG(VP_SRC_HEIGHT);
278 DUMPREG(VP_DST_H_POSITION);
279 DUMPREG(VP_DST_V_POSITION);
280 DUMPREG(VP_DST_WIDTH);
281 DUMPREG(VP_DST_HEIGHT);
282 DUMPREG(VP_H_RATIO);
283 DUMPREG(VP_V_RATIO);
284
285 #undef DUMPREG
286 }
287
288 static inline void vp_filter_set(struct mixer_resources *res,
289 int reg_id, const u8 *data, unsigned int size)
290 {
291 /* assure 4-byte align */
292 BUG_ON(size & 3);
293 for (; size; size -= 4, reg_id += 4, data += 4) {
294 u32 val = (data[0] << 24) | (data[1] << 16) |
295 (data[2] << 8) | data[3];
296 vp_reg_write(res, reg_id, val);
297 }
298 }
299
300 static void vp_default_filter(struct mixer_resources *res)
301 {
302 vp_filter_set(res, VP_POLY8_Y0_LL,
303 filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
304 vp_filter_set(res, VP_POLY4_Y0_LL,
305 filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
306 vp_filter_set(res, VP_POLY4_C0_LL,
307 filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
308 }
309
310 static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
311 bool alpha)
312 {
313 struct mixer_resources *res = &ctx->mixer_res;
314 u32 val;
315
316 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
317 if (alpha) {
318 /* blending based on pixel alpha */
319 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
320 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
321 }
322 mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
323 val, MXR_GRP_CFG_MISC_MASK);
324 }
325
326 static void mixer_cfg_vp_blend(struct mixer_context *ctx)
327 {
328 struct mixer_resources *res = &ctx->mixer_res;
329 u32 val;
330
331 /*
332 * No blending at the moment since the NV12/NV21 pixelformats don't
333 * have an alpha channel. However the mixer supports a global alpha
334 * value for a layer. Once this functionality is exposed, we can
335 * support blending of the video layer through this.
336 */
337 val = 0;
338 mixer_reg_write(res, MXR_VIDEO_CFG, val);
339 }
340
341 static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
342 {
343 struct mixer_resources *res = &ctx->mixer_res;
344
345 /* block update on vsync */
346 mixer_reg_writemask(res, MXR_STATUS, enable ?
347 MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
348
349 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
350 vp_reg_write(res, VP_SHADOW_UPDATE, enable ?
351 VP_SHADOW_UPDATE_ENABLE : 0);
352 }
353
354 static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height)
355 {
356 struct mixer_resources *res = &ctx->mixer_res;
357 u32 val;
358
359 /* choosing between interlace and progressive mode */
360 val = test_bit(MXR_BIT_INTERLACE, &ctx->flags) ?
361 MXR_CFG_SCAN_INTERLACE : MXR_CFG_SCAN_PROGRESSIVE;
362
363 if (ctx->mxr_ver != MXR_VER_128_0_0_184) {
364 /* choosing between proper HD and SD mode */
365 if (height <= 480)
366 val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
367 else if (height <= 576)
368 val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
369 else if (height <= 720)
370 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
371 else if (height <= 1080)
372 val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
373 else
374 val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
375 }
376
377 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK);
378 }
379
380 static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
381 {
382 struct mixer_resources *res = &ctx->mixer_res;
383 u32 val;
384
385 if (height == 480) {
386 val = MXR_CFG_RGB601_0_255;
387 } else if (height == 576) {
388 val = MXR_CFG_RGB601_0_255;
389 } else if (height == 720) {
390 val = MXR_CFG_RGB709_16_235;
391 mixer_reg_write(res, MXR_CM_COEFF_Y,
392 (1 << 30) | (94 << 20) | (314 << 10) |
393 (32 << 0));
394 mixer_reg_write(res, MXR_CM_COEFF_CB,
395 (972 << 20) | (851 << 10) | (225 << 0));
396 mixer_reg_write(res, MXR_CM_COEFF_CR,
397 (225 << 20) | (820 << 10) | (1004 << 0));
398 } else if (height == 1080) {
399 val = MXR_CFG_RGB709_16_235;
400 mixer_reg_write(res, MXR_CM_COEFF_Y,
401 (1 << 30) | (94 << 20) | (314 << 10) |
402 (32 << 0));
403 mixer_reg_write(res, MXR_CM_COEFF_CB,
404 (972 << 20) | (851 << 10) | (225 << 0));
405 mixer_reg_write(res, MXR_CM_COEFF_CR,
406 (225 << 20) | (820 << 10) | (1004 << 0));
407 } else {
408 val = MXR_CFG_RGB709_16_235;
409 mixer_reg_write(res, MXR_CM_COEFF_Y,
410 (1 << 30) | (94 << 20) | (314 << 10) |
411 (32 << 0));
412 mixer_reg_write(res, MXR_CM_COEFF_CB,
413 (972 << 20) | (851 << 10) | (225 << 0));
414 mixer_reg_write(res, MXR_CM_COEFF_CR,
415 (225 << 20) | (820 << 10) | (1004 << 0));
416 }
417
418 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
419 }
420
421 static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
422 unsigned int priority, bool enable)
423 {
424 struct mixer_resources *res = &ctx->mixer_res;
425 u32 val = enable ? ~0 : 0;
426
427 switch (win) {
428 case 0:
429 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
430 mixer_reg_writemask(res, MXR_LAYER_CFG,
431 MXR_LAYER_CFG_GRP0_VAL(priority),
432 MXR_LAYER_CFG_GRP0_MASK);
433 break;
434 case 1:
435 mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
436 mixer_reg_writemask(res, MXR_LAYER_CFG,
437 MXR_LAYER_CFG_GRP1_VAL(priority),
438 MXR_LAYER_CFG_GRP1_MASK);
439
440 break;
441 case VP_DEFAULT_WIN:
442 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
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
454 static 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
461 static 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
473 static 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 int priority = state->base.normalized_zpos + 1;
482 unsigned long flags;
483 dma_addr_t luma_addr[2], chroma_addr[2];
484 bool tiled_mode = false;
485 bool crcb_mode = false;
486 u32 val;
487
488 switch (fb->format->format) {
489 case DRM_FORMAT_NV12:
490 crcb_mode = false;
491 break;
492 case DRM_FORMAT_NV21:
493 crcb_mode = true;
494 break;
495 default:
496 DRM_ERROR("pixel format for vp is wrong [%d].\n",
497 fb->format->format);
498 return;
499 }
500
501 luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0);
502 chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1);
503
504 if (mode->flags & DRM_MODE_FLAG_INTERLACE) {
505 __set_bit(MXR_BIT_INTERLACE, &ctx->flags);
506 if (tiled_mode) {
507 luma_addr[1] = luma_addr[0] + 0x40;
508 chroma_addr[1] = chroma_addr[0] + 0x40;
509 } else {
510 luma_addr[1] = luma_addr[0] + fb->pitches[0];
511 chroma_addr[1] = chroma_addr[0] + fb->pitches[0];
512 }
513 } else {
514 __clear_bit(MXR_BIT_INTERLACE, &ctx->flags);
515 luma_addr[1] = 0;
516 chroma_addr[1] = 0;
517 }
518
519 spin_lock_irqsave(&res->reg_slock, flags);
520
521 /* interlace or progressive scan mode */
522 val = (test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? ~0 : 0);
523 vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP);
524
525 /* setup format */
526 val = (crcb_mode ? VP_MODE_NV21 : VP_MODE_NV12);
527 val |= (tiled_mode ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
528 vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK);
529
530 /* setting size of input image */
531 vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
532 VP_IMG_VSIZE(fb->height));
533 /* chroma height has to reduced by 2 to avoid chroma distorions */
534 vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[0]) |
535 VP_IMG_VSIZE(fb->height / 2));
536
537 vp_reg_write(res, VP_SRC_WIDTH, state->src.w);
538 vp_reg_write(res, VP_SRC_HEIGHT, state->src.h);
539 vp_reg_write(res, VP_SRC_H_POSITION,
540 VP_SRC_H_POSITION_VAL(state->src.x));
541 vp_reg_write(res, VP_SRC_V_POSITION, state->src.y);
542
543 vp_reg_write(res, VP_DST_WIDTH, state->crtc.w);
544 vp_reg_write(res, VP_DST_H_POSITION, state->crtc.x);
545 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
546 vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h / 2);
547 vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y / 2);
548 } else {
549 vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h);
550 vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y);
551 }
552
553 vp_reg_write(res, VP_H_RATIO, state->h_ratio);
554 vp_reg_write(res, VP_V_RATIO, state->v_ratio);
555
556 vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
557
558 /* set buffer address to vp */
559 vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]);
560 vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]);
561 vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]);
562 vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]);
563
564 mixer_cfg_scan(ctx, mode->vdisplay);
565 mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
566 mixer_cfg_layer(ctx, plane->index, priority, true);
567 mixer_cfg_vp_blend(ctx);
568 mixer_run(ctx);
569
570 spin_unlock_irqrestore(&res->reg_slock, flags);
571
572 mixer_regs_dump(ctx);
573 vp_regs_dump(ctx);
574 }
575
576 static void mixer_layer_update(struct mixer_context *ctx)
577 {
578 struct mixer_resources *res = &ctx->mixer_res;
579
580 mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
581 }
582
583 static void mixer_graph_buffer(struct mixer_context *ctx,
584 struct exynos_drm_plane *plane)
585 {
586 struct exynos_drm_plane_state *state =
587 to_exynos_plane_state(plane->base.state);
588 struct drm_display_mode *mode = &state->base.crtc->state->adjusted_mode;
589 struct mixer_resources *res = &ctx->mixer_res;
590 struct drm_framebuffer *fb = state->base.fb;
591 unsigned int priority = state->base.normalized_zpos + 1;
592 unsigned long flags;
593 unsigned int win = plane->index;
594 unsigned int x_ratio = 0, y_ratio = 0;
595 unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
596 dma_addr_t dma_addr;
597 unsigned int fmt;
598 u32 val;
599
600 switch (fb->format->format) {
601 case DRM_FORMAT_XRGB4444:
602 case DRM_FORMAT_ARGB4444:
603 fmt = MXR_FORMAT_ARGB4444;
604 break;
605
606 case DRM_FORMAT_XRGB1555:
607 case DRM_FORMAT_ARGB1555:
608 fmt = MXR_FORMAT_ARGB1555;
609 break;
610
611 case DRM_FORMAT_RGB565:
612 fmt = MXR_FORMAT_RGB565;
613 break;
614
615 case DRM_FORMAT_XRGB8888:
616 case DRM_FORMAT_ARGB8888:
617 fmt = MXR_FORMAT_ARGB8888;
618 break;
619
620 default:
621 DRM_DEBUG_KMS("pixelformat unsupported by mixer\n");
622 return;
623 }
624
625 /* ratio is already checked by common plane code */
626 x_ratio = state->h_ratio == (1 << 15);
627 y_ratio = state->v_ratio == (1 << 15);
628
629 dst_x_offset = state->crtc.x;
630 dst_y_offset = state->crtc.y;
631
632 /* converting dma address base and source offset */
633 dma_addr = exynos_drm_fb_dma_addr(fb, 0)
634 + (state->src.x * fb->format->cpp[0])
635 + (state->src.y * fb->pitches[0]);
636 src_x_offset = 0;
637 src_y_offset = 0;
638
639 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
640 __set_bit(MXR_BIT_INTERLACE, &ctx->flags);
641 else
642 __clear_bit(MXR_BIT_INTERLACE, &ctx->flags);
643
644 spin_lock_irqsave(&res->reg_slock, flags);
645
646 /* setup format */
647 mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
648 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
649
650 /* setup geometry */
651 mixer_reg_write(res, MXR_GRAPHIC_SPAN(win),
652 fb->pitches[0] / fb->format->cpp[0]);
653
654 /* setup display size */
655 if (ctx->mxr_ver == MXR_VER_128_0_0_184 &&
656 win == DEFAULT_WIN) {
657 val = MXR_MXR_RES_HEIGHT(mode->vdisplay);
658 val |= MXR_MXR_RES_WIDTH(mode->hdisplay);
659 mixer_reg_write(res, MXR_RESOLUTION, val);
660 }
661
662 val = MXR_GRP_WH_WIDTH(state->src.w);
663 val |= MXR_GRP_WH_HEIGHT(state->src.h);
664 val |= MXR_GRP_WH_H_SCALE(x_ratio);
665 val |= MXR_GRP_WH_V_SCALE(y_ratio);
666 mixer_reg_write(res, MXR_GRAPHIC_WH(win), val);
667
668 /* setup offsets in source image */
669 val = MXR_GRP_SXY_SX(src_x_offset);
670 val |= MXR_GRP_SXY_SY(src_y_offset);
671 mixer_reg_write(res, MXR_GRAPHIC_SXY(win), val);
672
673 /* setup offsets in display image */
674 val = MXR_GRP_DXY_DX(dst_x_offset);
675 val |= MXR_GRP_DXY_DY(dst_y_offset);
676 mixer_reg_write(res, MXR_GRAPHIC_DXY(win), val);
677
678 /* set buffer address to mixer */
679 mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr);
680
681 mixer_cfg_scan(ctx, mode->vdisplay);
682 mixer_cfg_rgb_fmt(ctx, mode->vdisplay);
683 mixer_cfg_layer(ctx, win, priority, true);
684 mixer_cfg_gfx_blend(ctx, win, is_alpha_format(fb->format->format));
685
686 /* layer update mandatory for mixer 16.0.33.0 */
687 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
688 ctx->mxr_ver == MXR_VER_128_0_0_184)
689 mixer_layer_update(ctx);
690
691 mixer_run(ctx);
692
693 spin_unlock_irqrestore(&res->reg_slock, flags);
694
695 mixer_regs_dump(ctx);
696 }
697
698 static void vp_win_reset(struct mixer_context *ctx)
699 {
700 struct mixer_resources *res = &ctx->mixer_res;
701 unsigned int tries = 100;
702
703 vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING);
704 while (--tries) {
705 /* waiting until VP_SRESET_PROCESSING is 0 */
706 if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING)
707 break;
708 mdelay(10);
709 }
710 WARN(tries == 0, "failed to reset Video Processor\n");
711 }
712
713 static void mixer_win_reset(struct mixer_context *ctx)
714 {
715 struct mixer_resources *res = &ctx->mixer_res;
716 unsigned long flags;
717
718 spin_lock_irqsave(&res->reg_slock, flags);
719
720 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
721
722 /* set output in RGB888 mode */
723 mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
724
725 /* 16 beat burst in DMA */
726 mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
727 MXR_STATUS_BURST_MASK);
728
729 /* reset default layer priority */
730 mixer_reg_write(res, MXR_LAYER_CFG, 0);
731
732 /* setting background color */
733 mixer_reg_write(res, MXR_BG_COLOR0, 0x008080);
734 mixer_reg_write(res, MXR_BG_COLOR1, 0x008080);
735 mixer_reg_write(res, MXR_BG_COLOR2, 0x008080);
736
737 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
738 /* configuration of Video Processor Registers */
739 vp_win_reset(ctx);
740 vp_default_filter(res);
741 }
742
743 /* disable all layers */
744 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
745 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
746 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
747 mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
748
749 spin_unlock_irqrestore(&res->reg_slock, flags);
750 }
751
752 static irqreturn_t mixer_irq_handler(int irq, void *arg)
753 {
754 struct mixer_context *ctx = arg;
755 struct mixer_resources *res = &ctx->mixer_res;
756 u32 val, base, shadow;
757
758 spin_lock(&res->reg_slock);
759
760 /* read interrupt status for handling and clearing flags for VSYNC */
761 val = mixer_reg_read(res, MXR_INT_STATUS);
762
763 /* handling VSYNC */
764 if (val & MXR_INT_STATUS_VSYNC) {
765 /* vsync interrupt use different bit for read and clear */
766 val |= MXR_INT_CLEAR_VSYNC;
767 val &= ~MXR_INT_STATUS_VSYNC;
768
769 /* interlace scan need to check shadow register */
770 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
771 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0));
772 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0));
773 if (base != shadow)
774 goto out;
775
776 base = mixer_reg_read(res, MXR_GRAPHIC_BASE(1));
777 shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1));
778 if (base != shadow)
779 goto out;
780 }
781
782 drm_crtc_handle_vblank(&ctx->crtc->base);
783 }
784
785 out:
786 /* clear interrupts */
787 mixer_reg_write(res, MXR_INT_STATUS, val);
788
789 spin_unlock(&res->reg_slock);
790
791 return IRQ_HANDLED;
792 }
793
794 static int mixer_resources_init(struct mixer_context *mixer_ctx)
795 {
796 struct device *dev = &mixer_ctx->pdev->dev;
797 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
798 struct resource *res;
799 int ret;
800
801 spin_lock_init(&mixer_res->reg_slock);
802
803 mixer_res->mixer = devm_clk_get(dev, "mixer");
804 if (IS_ERR(mixer_res->mixer)) {
805 dev_err(dev, "failed to get clock 'mixer'\n");
806 return -ENODEV;
807 }
808
809 mixer_res->hdmi = devm_clk_get(dev, "hdmi");
810 if (IS_ERR(mixer_res->hdmi)) {
811 dev_err(dev, "failed to get clock 'hdmi'\n");
812 return PTR_ERR(mixer_res->hdmi);
813 }
814
815 mixer_res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
816 if (IS_ERR(mixer_res->sclk_hdmi)) {
817 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
818 return -ENODEV;
819 }
820 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
821 if (res == NULL) {
822 dev_err(dev, "get memory resource failed.\n");
823 return -ENXIO;
824 }
825
826 mixer_res->mixer_regs = devm_ioremap(dev, res->start,
827 resource_size(res));
828 if (mixer_res->mixer_regs == NULL) {
829 dev_err(dev, "register mapping failed.\n");
830 return -ENXIO;
831 }
832
833 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0);
834 if (res == NULL) {
835 dev_err(dev, "get interrupt resource failed.\n");
836 return -ENXIO;
837 }
838
839 ret = devm_request_irq(dev, res->start, mixer_irq_handler,
840 0, "drm_mixer", mixer_ctx);
841 if (ret) {
842 dev_err(dev, "request interrupt failed.\n");
843 return ret;
844 }
845 mixer_res->irq = res->start;
846
847 return 0;
848 }
849
850 static int vp_resources_init(struct mixer_context *mixer_ctx)
851 {
852 struct device *dev = &mixer_ctx->pdev->dev;
853 struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
854 struct resource *res;
855
856 mixer_res->vp = devm_clk_get(dev, "vp");
857 if (IS_ERR(mixer_res->vp)) {
858 dev_err(dev, "failed to get clock 'vp'\n");
859 return -ENODEV;
860 }
861
862 if (test_bit(MXR_BIT_HAS_SCLK, &mixer_ctx->flags)) {
863 mixer_res->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
864 if (IS_ERR(mixer_res->sclk_mixer)) {
865 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
866 return -ENODEV;
867 }
868 mixer_res->mout_mixer = devm_clk_get(dev, "mout_mixer");
869 if (IS_ERR(mixer_res->mout_mixer)) {
870 dev_err(dev, "failed to get clock 'mout_mixer'\n");
871 return -ENODEV;
872 }
873
874 if (mixer_res->sclk_hdmi && mixer_res->mout_mixer)
875 clk_set_parent(mixer_res->mout_mixer,
876 mixer_res->sclk_hdmi);
877 }
878
879 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
880 if (res == NULL) {
881 dev_err(dev, "get memory resource failed.\n");
882 return -ENXIO;
883 }
884
885 mixer_res->vp_regs = devm_ioremap(dev, res->start,
886 resource_size(res));
887 if (mixer_res->vp_regs == NULL) {
888 dev_err(dev, "register mapping failed.\n");
889 return -ENXIO;
890 }
891
892 return 0;
893 }
894
895 static int mixer_initialize(struct mixer_context *mixer_ctx,
896 struct drm_device *drm_dev)
897 {
898 int ret;
899 struct exynos_drm_private *priv;
900 priv = drm_dev->dev_private;
901
902 mixer_ctx->drm_dev = drm_dev;
903 mixer_ctx->pipe = priv->pipe++;
904
905 /* acquire resources: regs, irqs, clocks */
906 ret = mixer_resources_init(mixer_ctx);
907 if (ret) {
908 DRM_ERROR("mixer_resources_init failed ret=%d\n", ret);
909 return ret;
910 }
911
912 if (test_bit(MXR_BIT_VP_ENABLED, &mixer_ctx->flags)) {
913 /* acquire vp resources: regs, irqs, clocks */
914 ret = vp_resources_init(mixer_ctx);
915 if (ret) {
916 DRM_ERROR("vp_resources_init failed ret=%d\n", ret);
917 return ret;
918 }
919 }
920
921 ret = drm_iommu_attach_device(drm_dev, mixer_ctx->dev);
922 if (ret)
923 priv->pipe--;
924
925 return ret;
926 }
927
928 static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
929 {
930 drm_iommu_detach_device(mixer_ctx->drm_dev, mixer_ctx->dev);
931 }
932
933 static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
934 {
935 struct mixer_context *mixer_ctx = crtc->ctx;
936 struct mixer_resources *res = &mixer_ctx->mixer_res;
937
938 __set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
939 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
940 return 0;
941
942 /* enable vsync interrupt */
943 mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
944 mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
945
946 return 0;
947 }
948
949 static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
950 {
951 struct mixer_context *mixer_ctx = crtc->ctx;
952 struct mixer_resources *res = &mixer_ctx->mixer_res;
953
954 __clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
955
956 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
957 return;
958
959 /* disable vsync interrupt */
960 mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
961 mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
962 }
963
964 static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
965 {
966 struct mixer_context *mixer_ctx = crtc->ctx;
967
968 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
969 return;
970
971 mixer_vsync_set_update(mixer_ctx, false);
972 }
973
974 static void mixer_update_plane(struct exynos_drm_crtc *crtc,
975 struct exynos_drm_plane *plane)
976 {
977 struct mixer_context *mixer_ctx = crtc->ctx;
978
979 DRM_DEBUG_KMS("win: %d\n", plane->index);
980
981 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
982 return;
983
984 if (plane->index == VP_DEFAULT_WIN)
985 vp_video_buffer(mixer_ctx, plane);
986 else
987 mixer_graph_buffer(mixer_ctx, plane);
988 }
989
990 static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
991 struct exynos_drm_plane *plane)
992 {
993 struct mixer_context *mixer_ctx = crtc->ctx;
994 struct mixer_resources *res = &mixer_ctx->mixer_res;
995 unsigned long flags;
996
997 DRM_DEBUG_KMS("win: %d\n", plane->index);
998
999 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
1000 return;
1001
1002 spin_lock_irqsave(&res->reg_slock, flags);
1003 mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
1004 spin_unlock_irqrestore(&res->reg_slock, flags);
1005 }
1006
1007 static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
1008 {
1009 struct mixer_context *mixer_ctx = crtc->ctx;
1010
1011 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
1012 return;
1013
1014 mixer_vsync_set_update(mixer_ctx, true);
1015 }
1016
1017 static void mixer_enable(struct exynos_drm_crtc *crtc)
1018 {
1019 struct mixer_context *ctx = crtc->ctx;
1020 struct mixer_resources *res = &ctx->mixer_res;
1021
1022 if (test_bit(MXR_BIT_POWERED, &ctx->flags))
1023 return;
1024
1025 pm_runtime_get_sync(ctx->dev);
1026
1027 exynos_drm_pipe_clk_enable(crtc, true);
1028
1029 mixer_vsync_set_update(ctx, false);
1030
1031 mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
1032
1033 if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
1034 mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
1035 mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
1036 }
1037 mixer_win_reset(ctx);
1038
1039 mixer_vsync_set_update(ctx, true);
1040
1041 set_bit(MXR_BIT_POWERED, &ctx->flags);
1042 }
1043
1044 static void mixer_disable(struct exynos_drm_crtc *crtc)
1045 {
1046 struct mixer_context *ctx = crtc->ctx;
1047 int i;
1048
1049 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
1050 return;
1051
1052 mixer_stop(ctx);
1053 mixer_regs_dump(ctx);
1054
1055 for (i = 0; i < MIXER_WIN_NR; i++)
1056 mixer_disable_plane(crtc, &ctx->planes[i]);
1057
1058 exynos_drm_pipe_clk_enable(crtc, false);
1059
1060 pm_runtime_put(ctx->dev);
1061
1062 clear_bit(MXR_BIT_POWERED, &ctx->flags);
1063 }
1064
1065 /* Only valid for Mixer version 16.0.33.0 */
1066 static int mixer_atomic_check(struct exynos_drm_crtc *crtc,
1067 struct drm_crtc_state *state)
1068 {
1069 struct drm_display_mode *mode = &state->adjusted_mode;
1070 u32 w, h;
1071
1072 w = mode->hdisplay;
1073 h = mode->vdisplay;
1074
1075 DRM_DEBUG_KMS("xres=%d, yres=%d, refresh=%d, intl=%d\n",
1076 mode->hdisplay, mode->vdisplay, mode->vrefresh,
1077 (mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0);
1078
1079 if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1080 (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1081 (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1082 return 0;
1083
1084 return -EINVAL;
1085 }
1086
1087 static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1088 .enable = mixer_enable,
1089 .disable = mixer_disable,
1090 .enable_vblank = mixer_enable_vblank,
1091 .disable_vblank = mixer_disable_vblank,
1092 .atomic_begin = mixer_atomic_begin,
1093 .update_plane = mixer_update_plane,
1094 .disable_plane = mixer_disable_plane,
1095 .atomic_flush = mixer_atomic_flush,
1096 .atomic_check = mixer_atomic_check,
1097 };
1098
1099 static struct mixer_drv_data exynos5420_mxr_drv_data = {
1100 .version = MXR_VER_128_0_0_184,
1101 .is_vp_enabled = 0,
1102 };
1103
1104 static struct mixer_drv_data exynos5250_mxr_drv_data = {
1105 .version = MXR_VER_16_0_33_0,
1106 .is_vp_enabled = 0,
1107 };
1108
1109 static struct mixer_drv_data exynos4212_mxr_drv_data = {
1110 .version = MXR_VER_0_0_0_16,
1111 .is_vp_enabled = 1,
1112 };
1113
1114 static struct mixer_drv_data exynos4210_mxr_drv_data = {
1115 .version = MXR_VER_0_0_0_16,
1116 .is_vp_enabled = 1,
1117 .has_sclk = 1,
1118 };
1119
1120 static struct of_device_id mixer_match_types[] = {
1121 {
1122 .compatible = "samsung,exynos4210-mixer",
1123 .data = &exynos4210_mxr_drv_data,
1124 }, {
1125 .compatible = "samsung,exynos4212-mixer",
1126 .data = &exynos4212_mxr_drv_data,
1127 }, {
1128 .compatible = "samsung,exynos5-mixer",
1129 .data = &exynos5250_mxr_drv_data,
1130 }, {
1131 .compatible = "samsung,exynos5250-mixer",
1132 .data = &exynos5250_mxr_drv_data,
1133 }, {
1134 .compatible = "samsung,exynos5420-mixer",
1135 .data = &exynos5420_mxr_drv_data,
1136 }, {
1137 /* end node */
1138 }
1139 };
1140 MODULE_DEVICE_TABLE(of, mixer_match_types);
1141
1142 static int mixer_bind(struct device *dev, struct device *manager, void *data)
1143 {
1144 struct mixer_context *ctx = dev_get_drvdata(dev);
1145 struct drm_device *drm_dev = data;
1146 struct exynos_drm_plane *exynos_plane;
1147 unsigned int i;
1148 int ret;
1149
1150 ret = mixer_initialize(ctx, drm_dev);
1151 if (ret)
1152 return ret;
1153
1154 for (i = 0; i < MIXER_WIN_NR; i++) {
1155 if (i == VP_DEFAULT_WIN && !test_bit(MXR_BIT_VP_ENABLED,
1156 &ctx->flags))
1157 continue;
1158
1159 ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1160 1 << ctx->pipe, &plane_configs[i]);
1161 if (ret)
1162 return ret;
1163 }
1164
1165 exynos_plane = &ctx->planes[DEFAULT_WIN];
1166 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1167 ctx->pipe, EXYNOS_DISPLAY_TYPE_HDMI,
1168 &mixer_crtc_ops, ctx);
1169 if (IS_ERR(ctx->crtc)) {
1170 mixer_ctx_remove(ctx);
1171 ret = PTR_ERR(ctx->crtc);
1172 goto free_ctx;
1173 }
1174
1175 return 0;
1176
1177 free_ctx:
1178 devm_kfree(dev, ctx);
1179 return ret;
1180 }
1181
1182 static void mixer_unbind(struct device *dev, struct device *master, void *data)
1183 {
1184 struct mixer_context *ctx = dev_get_drvdata(dev);
1185
1186 mixer_ctx_remove(ctx);
1187 }
1188
1189 static const struct component_ops mixer_component_ops = {
1190 .bind = mixer_bind,
1191 .unbind = mixer_unbind,
1192 };
1193
1194 static int mixer_probe(struct platform_device *pdev)
1195 {
1196 struct device *dev = &pdev->dev;
1197 const struct mixer_drv_data *drv;
1198 struct mixer_context *ctx;
1199 int ret;
1200
1201 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1202 if (!ctx) {
1203 DRM_ERROR("failed to alloc mixer context.\n");
1204 return -ENOMEM;
1205 }
1206
1207 drv = of_device_get_match_data(dev);
1208
1209 ctx->pdev = pdev;
1210 ctx->dev = dev;
1211 ctx->mxr_ver = drv->version;
1212
1213 if (drv->is_vp_enabled)
1214 __set_bit(MXR_BIT_VP_ENABLED, &ctx->flags);
1215 if (drv->has_sclk)
1216 __set_bit(MXR_BIT_HAS_SCLK, &ctx->flags);
1217
1218 platform_set_drvdata(pdev, ctx);
1219
1220 ret = component_add(&pdev->dev, &mixer_component_ops);
1221 if (!ret)
1222 pm_runtime_enable(dev);
1223
1224 return ret;
1225 }
1226
1227 static int mixer_remove(struct platform_device *pdev)
1228 {
1229 pm_runtime_disable(&pdev->dev);
1230
1231 component_del(&pdev->dev, &mixer_component_ops);
1232
1233 return 0;
1234 }
1235
1236 static int __maybe_unused exynos_mixer_suspend(struct device *dev)
1237 {
1238 struct mixer_context *ctx = dev_get_drvdata(dev);
1239 struct mixer_resources *res = &ctx->mixer_res;
1240
1241 clk_disable_unprepare(res->hdmi);
1242 clk_disable_unprepare(res->mixer);
1243 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1244 clk_disable_unprepare(res->vp);
1245 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags))
1246 clk_disable_unprepare(res->sclk_mixer);
1247 }
1248
1249 return 0;
1250 }
1251
1252 static int __maybe_unused exynos_mixer_resume(struct device *dev)
1253 {
1254 struct mixer_context *ctx = dev_get_drvdata(dev);
1255 struct mixer_resources *res = &ctx->mixer_res;
1256 int ret;
1257
1258 ret = clk_prepare_enable(res->mixer);
1259 if (ret < 0) {
1260 DRM_ERROR("Failed to prepare_enable the mixer clk [%d]\n", ret);
1261 return ret;
1262 }
1263 ret = clk_prepare_enable(res->hdmi);
1264 if (ret < 0) {
1265 DRM_ERROR("Failed to prepare_enable the hdmi clk [%d]\n", ret);
1266 return ret;
1267 }
1268 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1269 ret = clk_prepare_enable(res->vp);
1270 if (ret < 0) {
1271 DRM_ERROR("Failed to prepare_enable the vp clk [%d]\n",
1272 ret);
1273 return ret;
1274 }
1275 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags)) {
1276 ret = clk_prepare_enable(res->sclk_mixer);
1277 if (ret < 0) {
1278 DRM_ERROR("Failed to prepare_enable the " \
1279 "sclk_mixer clk [%d]\n",
1280 ret);
1281 return ret;
1282 }
1283 }
1284 }
1285
1286 return 0;
1287 }
1288
1289 static const struct dev_pm_ops exynos_mixer_pm_ops = {
1290 SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)
1291 };
1292
1293 struct platform_driver mixer_driver = {
1294 .driver = {
1295 .name = "exynos-mixer",
1296 .owner = THIS_MODULE,
1297 .pm = &exynos_mixer_pm_ops,
1298 .of_match_table = mixer_match_types,
1299 },
1300 .probe = mixer_probe,
1301 .remove = mixer_remove,
1302 };
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