1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2011 Samsung Electronics Co.Ltd
4 * Authors:
5 * Seung-Woo Kim <sw0312.kim@samsung.com>
6 * Inki Dae <inki.dae@samsung.com>
7 * Joonyoung Shim <jy0922.shim@samsung.com>
8 *
9 * Based on drivers/media/video/s5p-tv/mixer_reg.c
10 */
11
12 #include <linux/clk.h>
13 #include <linux/component.h>
14 #include <linux/delay.h>
15 #include <linux/i2c.h>
16 #include <linux/interrupt.h>
17 #include <linux/irq.h>
18 #include <linux/kernel.h>
19 #include <linux/ktime.h>
20 #include <linux/of.h>
21 #include <linux/of_device.h>
22 #include <linux/platform_device.h>
23 #include <linux/pm_runtime.h>
24 #include <linux/regulator/consumer.h>
25 #include <linux/spinlock.h>
26 #include <linux/wait.h>
27
28 #include <drm/drm_fourcc.h>
29 #include <drm/drm_vblank.h>
30 #include <drm/exynos_drm.h>
31
32 #include "exynos_drm_crtc.h"
33 #include "exynos_drm_drv.h"
34 #include "exynos_drm_fb.h"
35 #include "exynos_drm_plane.h"
36 #include "regs-mixer.h"
37 #include "regs-vp.h"
38
39 #define MIXER_WIN_NR 3
40 #define VP_DEFAULT_WIN 2
41
42 /*
43 * Mixer color space conversion coefficient triplet.
44 * Used for CSC from RGB to YCbCr.
45 * Each coefficient is a 10-bit fixed point number with
46 * sign and no integer part, i.e.
47 * [0:8] = fractional part (representing a value y = x / 2^9)
48 * [9] = sign
49 * Negative values are encoded with two's complement.
50 */
51 #define MXR_CSC_C(x) ((int)((x) * 512.0) & 0x3ff)
52 #define MXR_CSC_CT(a0, a1, a2) \
53 ((MXR_CSC_C(a0) << 20) | (MXR_CSC_C(a1) << 10) | (MXR_CSC_C(a2) << 0))
54
55 /* YCbCr value, used for mixer background color configuration. */
56 #define MXR_YCBCR_VAL(y, cb, cr) (((y) << 16) | ((cb) << 8) | ((cr) << 0))
57
58 /* The pixelformats that are natively supported by the mixer. */
59 #define MXR_FORMAT_RGB565 4
60 #define MXR_FORMAT_ARGB1555 5
61 #define MXR_FORMAT_ARGB4444 6
62 #define MXR_FORMAT_ARGB8888 7
63
64 enum mixer_version_id {
65 MXR_VER_0_0_0_16,
66 MXR_VER_16_0_33_0,
67 MXR_VER_128_0_0_184,
68 };
69
70 enum mixer_flag_bits {
71 MXR_BIT_POWERED,
72 MXR_BIT_VSYNC,
73 MXR_BIT_INTERLACE,
74 MXR_BIT_VP_ENABLED,
75 MXR_BIT_HAS_SCLK,
76 };
77
78 static const uint32_t mixer_formats[] = {
79 DRM_FORMAT_XRGB4444,
80 DRM_FORMAT_ARGB4444,
81 DRM_FORMAT_XRGB1555,
82 DRM_FORMAT_ARGB1555,
83 DRM_FORMAT_RGB565,
84 DRM_FORMAT_XRGB8888,
85 DRM_FORMAT_ARGB8888,
86 };
87
88 static const uint32_t vp_formats[] = {
89 DRM_FORMAT_NV12,
90 DRM_FORMAT_NV21,
91 };
92
93 struct mixer_context {
94 struct platform_device *pdev;
95 struct device *dev;
96 struct drm_device *drm_dev;
97 struct exynos_drm_crtc *crtc;
98 struct exynos_drm_plane planes[MIXER_WIN_NR];
99 unsigned long flags;
100
101 int irq;
102 void __iomem *mixer_regs;
103 void __iomem *vp_regs;
104 spinlock_t reg_slock;
105 struct clk *mixer;
106 struct clk *vp;
107 struct clk *hdmi;
108 struct clk *sclk_mixer;
109 struct clk *sclk_hdmi;
110 struct clk *mout_mixer;
111 enum mixer_version_id mxr_ver;
112 int scan_value;
113 };
114
115 struct mixer_drv_data {
116 enum mixer_version_id version;
117 bool is_vp_enabled;
118 bool has_sclk;
119 };
120
121 static const struct exynos_drm_plane_config plane_configs[MIXER_WIN_NR] = {
122 {
123 .zpos = 0,
124 .type = DRM_PLANE_TYPE_PRIMARY,
125 .pixel_formats = mixer_formats,
126 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
127 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
128 EXYNOS_DRM_PLANE_CAP_ZPOS |
129 EXYNOS_DRM_PLANE_CAP_PIX_BLEND |
130 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
131 }, {
132 .zpos = 1,
133 .type = DRM_PLANE_TYPE_CURSOR,
134 .pixel_formats = mixer_formats,
135 .num_pixel_formats = ARRAY_SIZE(mixer_formats),
136 .capabilities = EXYNOS_DRM_PLANE_CAP_DOUBLE |
137 EXYNOS_DRM_PLANE_CAP_ZPOS |
138 EXYNOS_DRM_PLANE_CAP_PIX_BLEND |
139 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
140 }, {
141 .zpos = 2,
142 .type = DRM_PLANE_TYPE_OVERLAY,
143 .pixel_formats = vp_formats,
144 .num_pixel_formats = ARRAY_SIZE(vp_formats),
145 .capabilities = EXYNOS_DRM_PLANE_CAP_SCALE |
146 EXYNOS_DRM_PLANE_CAP_ZPOS |
147 EXYNOS_DRM_PLANE_CAP_TILE |
148 EXYNOS_DRM_PLANE_CAP_WIN_BLEND,
149 },
150 };
151
152 static const u8 filter_y_horiz_tap8[] = {
153 0, -1, -1, -1, -1, -1, -1, -1,
154 -1, -1, -1, -1, -1, 0, 0, 0,
155 0, 2, 4, 5, 6, 6, 6, 6,
156 6, 5, 5, 4, 3, 2, 1, 1,
157 0, -6, -12, -16, -18, -20, -21, -20,
158 -20, -18, -16, -13, -10, -8, -5, -2,
159 127, 126, 125, 121, 114, 107, 99, 89,
160 79, 68, 57, 46, 35, 25, 16, 8,
161 };
162
163 static const u8 filter_y_vert_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 0, 5, 11, 19, 27, 37, 48, 59,
169 70, 81, 92, 102, 111, 118, 124, 126,
170 0, 0, -1, -1, -2, -3, -4, -5,
171 -6, -7, -8, -8, -8, -8, -6, -3,
172 };
173
174 static const u8 filter_cr_horiz_tap4[] = {
175 0, -3, -6, -8, -8, -8, -8, -7,
176 -6, -5, -4, -3, -2, -1, -1, 0,
177 127, 126, 124, 118, 111, 102, 92, 81,
178 70, 59, 48, 37, 27, 19, 11, 5,
179 };
180
vp_reg_read(struct mixer_context * ctx,u32 reg_id)181 static inline u32 vp_reg_read(struct mixer_context *ctx, u32 reg_id)
182 {
183 return readl(ctx->vp_regs + reg_id);
184 }
185
vp_reg_write(struct mixer_context * ctx,u32 reg_id,u32 val)186 static inline void vp_reg_write(struct mixer_context *ctx, u32 reg_id,
187 u32 val)
188 {
189 writel(val, ctx->vp_regs + reg_id);
190 }
191
vp_reg_writemask(struct mixer_context * ctx,u32 reg_id,u32 val,u32 mask)192 static inline void vp_reg_writemask(struct mixer_context *ctx, u32 reg_id,
193 u32 val, u32 mask)
194 {
195 u32 old = vp_reg_read(ctx, reg_id);
196
197 val = (val & mask) | (old & ~mask);
198 writel(val, ctx->vp_regs + reg_id);
199 }
200
mixer_reg_read(struct mixer_context * ctx,u32 reg_id)201 static inline u32 mixer_reg_read(struct mixer_context *ctx, u32 reg_id)
202 {
203 return readl(ctx->mixer_regs + reg_id);
204 }
205
mixer_reg_write(struct mixer_context * ctx,u32 reg_id,u32 val)206 static inline void mixer_reg_write(struct mixer_context *ctx, u32 reg_id,
207 u32 val)
208 {
209 writel(val, ctx->mixer_regs + reg_id);
210 }
211
mixer_reg_writemask(struct mixer_context * ctx,u32 reg_id,u32 val,u32 mask)212 static inline void mixer_reg_writemask(struct mixer_context *ctx,
213 u32 reg_id, u32 val, u32 mask)
214 {
215 u32 old = mixer_reg_read(ctx, reg_id);
216
217 val = (val & mask) | (old & ~mask);
218 writel(val, ctx->mixer_regs + reg_id);
219 }
220
mixer_regs_dump(struct mixer_context * ctx)221 static void mixer_regs_dump(struct mixer_context *ctx)
222 {
223 #define DUMPREG(reg_id) \
224 do { \
225 DRM_DEV_DEBUG_KMS(ctx->dev, #reg_id " = %08x\n", \
226 (u32)readl(ctx->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
vp_regs_dump(struct mixer_context * ctx)253 static void vp_regs_dump(struct mixer_context *ctx)
254 {
255 #define DUMPREG(reg_id) \
256 do { \
257 DRM_DEV_DEBUG_KMS(ctx->dev, #reg_id " = %08x\n", \
258 (u32) readl(ctx->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
vp_filter_set(struct mixer_context * ctx,int reg_id,const u8 * data,unsigned int size)288 static inline void vp_filter_set(struct mixer_context *ctx,
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(ctx, reg_id, val);
297 }
298 }
299
vp_default_filter(struct mixer_context * ctx)300 static void vp_default_filter(struct mixer_context *ctx)
301 {
302 vp_filter_set(ctx, VP_POLY8_Y0_LL,
303 filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
304 vp_filter_set(ctx, VP_POLY4_Y0_LL,
305 filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
306 vp_filter_set(ctx, VP_POLY4_C0_LL,
307 filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
308 }
309
mixer_cfg_gfx_blend(struct mixer_context * ctx,unsigned int win,unsigned int pixel_alpha,unsigned int alpha)310 static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
311 unsigned int pixel_alpha, unsigned int alpha)
312 {
313 u32 win_alpha = alpha >> 8;
314 u32 val;
315
316 val = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
317 switch (pixel_alpha) {
318 case DRM_MODE_BLEND_PIXEL_NONE:
319 break;
320 case DRM_MODE_BLEND_COVERAGE:
321 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
322 break;
323 case DRM_MODE_BLEND_PREMULTI:
324 default:
325 val |= MXR_GRP_CFG_BLEND_PRE_MUL;
326 val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
327 break;
328 }
329
330 if (alpha != DRM_BLEND_ALPHA_OPAQUE) {
331 val |= MXR_GRP_CFG_WIN_BLEND_EN;
332 val |= win_alpha;
333 }
334 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
335 val, MXR_GRP_CFG_MISC_MASK);
336 }
337
mixer_cfg_vp_blend(struct mixer_context * ctx,unsigned int alpha)338 static void mixer_cfg_vp_blend(struct mixer_context *ctx, unsigned int alpha)
339 {
340 u32 win_alpha = alpha >> 8;
341 u32 val = 0;
342
343 if (alpha != DRM_BLEND_ALPHA_OPAQUE) {
344 val |= MXR_VID_CFG_BLEND_EN;
345 val |= win_alpha;
346 }
347 mixer_reg_write(ctx, MXR_VIDEO_CFG, val);
348 }
349
mixer_is_synced(struct mixer_context * ctx)350 static bool mixer_is_synced(struct mixer_context *ctx)
351 {
352 u32 base, shadow;
353
354 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
355 ctx->mxr_ver == MXR_VER_128_0_0_184)
356 return !(mixer_reg_read(ctx, MXR_CFG) &
357 MXR_CFG_LAYER_UPDATE_COUNT_MASK);
358
359 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags) &&
360 vp_reg_read(ctx, VP_SHADOW_UPDATE))
361 return false;
362
363 base = mixer_reg_read(ctx, MXR_CFG);
364 shadow = mixer_reg_read(ctx, MXR_CFG_S);
365 if (base != shadow)
366 return false;
367
368 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(0));
369 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(0));
370 if (base != shadow)
371 return false;
372
373 base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(1));
374 shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(1));
375 if (base != shadow)
376 return false;
377
378 return true;
379 }
380
mixer_wait_for_sync(struct mixer_context * ctx)381 static int mixer_wait_for_sync(struct mixer_context *ctx)
382 {
383 ktime_t timeout = ktime_add_us(ktime_get(), 100000);
384
385 while (!mixer_is_synced(ctx)) {
386 usleep_range(1000, 2000);
387 if (ktime_compare(ktime_get(), timeout) > 0)
388 return -ETIMEDOUT;
389 }
390 return 0;
391 }
392
mixer_disable_sync(struct mixer_context * ctx)393 static void mixer_disable_sync(struct mixer_context *ctx)
394 {
395 mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_SYNC_ENABLE);
396 }
397
mixer_enable_sync(struct mixer_context * ctx)398 static void mixer_enable_sync(struct mixer_context *ctx)
399 {
400 if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
401 ctx->mxr_ver == MXR_VER_128_0_0_184)
402 mixer_reg_writemask(ctx, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
403 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SYNC_ENABLE);
404 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
405 vp_reg_write(ctx, VP_SHADOW_UPDATE, VP_SHADOW_UPDATE_ENABLE);
406 }
407
mixer_cfg_scan(struct mixer_context * ctx,int width,int height)408 static void mixer_cfg_scan(struct mixer_context *ctx, int width, int height)
409 {
410 u32 val;
411
412 /* choosing between interlace and progressive mode */
413 val = test_bit(MXR_BIT_INTERLACE, &ctx->flags) ?
414 MXR_CFG_SCAN_INTERLACE : MXR_CFG_SCAN_PROGRESSIVE;
415
416 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
417 mixer_reg_write(ctx, MXR_RESOLUTION,
418 MXR_MXR_RES_HEIGHT(height) | MXR_MXR_RES_WIDTH(width));
419 else
420 val |= ctx->scan_value;
421
422 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_SCAN_MASK);
423 }
424
mixer_cfg_rgb_fmt(struct mixer_context * ctx,struct drm_display_mode * mode)425 static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, struct drm_display_mode *mode)
426 {
427 enum hdmi_quantization_range range = drm_default_rgb_quant_range(mode);
428 u32 val;
429
430 if (mode->vdisplay < 720) {
431 val = MXR_CFG_RGB601;
432 } else {
433 val = MXR_CFG_RGB709;
434
435 /* Configure the BT.709 CSC matrix for full range RGB. */
436 mixer_reg_write(ctx, MXR_CM_COEFF_Y,
437 MXR_CSC_CT( 0.184, 0.614, 0.063) |
438 MXR_CM_COEFF_RGB_FULL);
439 mixer_reg_write(ctx, MXR_CM_COEFF_CB,
440 MXR_CSC_CT(-0.102, -0.338, 0.440));
441 mixer_reg_write(ctx, MXR_CM_COEFF_CR,
442 MXR_CSC_CT( 0.440, -0.399, -0.040));
443 }
444
445 if (range == HDMI_QUANTIZATION_RANGE_FULL)
446 val |= MXR_CFG_QUANT_RANGE_FULL;
447 else
448 val |= MXR_CFG_QUANT_RANGE_LIMITED;
449
450 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
451 }
452
mixer_cfg_layer(struct mixer_context * ctx,unsigned int win,unsigned int priority,bool enable)453 static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
454 unsigned int priority, bool enable)
455 {
456 u32 val = enable ? ~0 : 0;
457
458 switch (win) {
459 case 0:
460 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
461 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
462 MXR_LAYER_CFG_GRP0_VAL(priority),
463 MXR_LAYER_CFG_GRP0_MASK);
464 break;
465 case 1:
466 mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
467 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
468 MXR_LAYER_CFG_GRP1_VAL(priority),
469 MXR_LAYER_CFG_GRP1_MASK);
470
471 break;
472 case VP_DEFAULT_WIN:
473 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
474 vp_reg_writemask(ctx, VP_ENABLE, val, VP_ENABLE_ON);
475 mixer_reg_writemask(ctx, MXR_CFG, val,
476 MXR_CFG_VP_ENABLE);
477 mixer_reg_writemask(ctx, MXR_LAYER_CFG,
478 MXR_LAYER_CFG_VP_VAL(priority),
479 MXR_LAYER_CFG_VP_MASK);
480 }
481 break;
482 }
483 }
484
mixer_run(struct mixer_context * ctx)485 static void mixer_run(struct mixer_context *ctx)
486 {
487 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
488 }
489
mixer_stop(struct mixer_context * ctx)490 static void mixer_stop(struct mixer_context *ctx)
491 {
492 int timeout = 20;
493
494 mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
495
496 while (!(mixer_reg_read(ctx, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
497 --timeout)
498 usleep_range(10000, 12000);
499 }
500
mixer_commit(struct mixer_context * ctx)501 static void mixer_commit(struct mixer_context *ctx)
502 {
503 struct drm_display_mode *mode = &ctx->crtc->base.state->adjusted_mode;
504
505 mixer_cfg_scan(ctx, mode->hdisplay, mode->vdisplay);
506 mixer_cfg_rgb_fmt(ctx, mode);
507 mixer_run(ctx);
508 }
509
vp_video_buffer(struct mixer_context * ctx,struct exynos_drm_plane * plane)510 static void vp_video_buffer(struct mixer_context *ctx,
511 struct exynos_drm_plane *plane)
512 {
513 struct exynos_drm_plane_state *state =
514 to_exynos_plane_state(plane->base.state);
515 struct drm_framebuffer *fb = state->base.fb;
516 unsigned int priority = state->base.normalized_zpos + 1;
517 unsigned long flags;
518 dma_addr_t luma_addr[2], chroma_addr[2];
519 bool is_tiled, is_nv21;
520 u32 val;
521
522 is_nv21 = (fb->format->format == DRM_FORMAT_NV21);
523 is_tiled = (fb->modifier == DRM_FORMAT_MOD_SAMSUNG_64_32_TILE);
524
525 luma_addr[0] = exynos_drm_fb_dma_addr(fb, 0);
526 chroma_addr[0] = exynos_drm_fb_dma_addr(fb, 1);
527
528 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
529 if (is_tiled) {
530 luma_addr[1] = luma_addr[0] + 0x40;
531 chroma_addr[1] = chroma_addr[0] + 0x40;
532 } else {
533 luma_addr[1] = luma_addr[0] + fb->pitches[0];
534 chroma_addr[1] = chroma_addr[0] + fb->pitches[1];
535 }
536 } else {
537 luma_addr[1] = 0;
538 chroma_addr[1] = 0;
539 }
540
541 spin_lock_irqsave(&ctx->reg_slock, flags);
542
543 /* interlace or progressive scan mode */
544 val = (test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? ~0 : 0);
545 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_LINE_SKIP);
546
547 /* setup format */
548 val = (is_nv21 ? VP_MODE_NV21 : VP_MODE_NV12);
549 val |= (is_tiled ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
550 vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_FMT_MASK);
551
552 /* setting size of input image */
553 vp_reg_write(ctx, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
554 VP_IMG_VSIZE(fb->height));
555 /* chroma plane for NV12/NV21 is half the height of the luma plane */
556 vp_reg_write(ctx, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[1]) |
557 VP_IMG_VSIZE(fb->height / 2));
558
559 vp_reg_write(ctx, VP_SRC_WIDTH, state->src.w);
560 vp_reg_write(ctx, VP_SRC_H_POSITION,
561 VP_SRC_H_POSITION_VAL(state->src.x));
562 vp_reg_write(ctx, VP_DST_WIDTH, state->crtc.w);
563 vp_reg_write(ctx, VP_DST_H_POSITION, state->crtc.x);
564
565 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
566 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h / 2);
567 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y / 2);
568 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h / 2);
569 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y / 2);
570 } else {
571 vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h);
572 vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y);
573 vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h);
574 vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y);
575 }
576
577 vp_reg_write(ctx, VP_H_RATIO, state->h_ratio);
578 vp_reg_write(ctx, VP_V_RATIO, state->v_ratio);
579
580 vp_reg_write(ctx, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
581
582 /* set buffer address to vp */
583 vp_reg_write(ctx, VP_TOP_Y_PTR, luma_addr[0]);
584 vp_reg_write(ctx, VP_BOT_Y_PTR, luma_addr[1]);
585 vp_reg_write(ctx, VP_TOP_C_PTR, chroma_addr[0]);
586 vp_reg_write(ctx, VP_BOT_C_PTR, chroma_addr[1]);
587
588 mixer_cfg_layer(ctx, plane->index, priority, true);
589 mixer_cfg_vp_blend(ctx, state->base.alpha);
590
591 spin_unlock_irqrestore(&ctx->reg_slock, flags);
592
593 mixer_regs_dump(ctx);
594 vp_regs_dump(ctx);
595 }
596
mixer_graph_buffer(struct mixer_context * ctx,struct exynos_drm_plane * plane)597 static void mixer_graph_buffer(struct mixer_context *ctx,
598 struct exynos_drm_plane *plane)
599 {
600 struct exynos_drm_plane_state *state =
601 to_exynos_plane_state(plane->base.state);
602 struct drm_framebuffer *fb = state->base.fb;
603 unsigned int priority = state->base.normalized_zpos + 1;
604 unsigned long flags;
605 unsigned int win = plane->index;
606 unsigned int x_ratio = 0, y_ratio = 0;
607 unsigned int dst_x_offset, dst_y_offset;
608 unsigned int pixel_alpha;
609 dma_addr_t dma_addr;
610 unsigned int fmt;
611 u32 val;
612
613 if (fb->format->has_alpha)
614 pixel_alpha = state->base.pixel_blend_mode;
615 else
616 pixel_alpha = DRM_MODE_BLEND_PIXEL_NONE;
617
618 switch (fb->format->format) {
619 case DRM_FORMAT_XRGB4444:
620 case DRM_FORMAT_ARGB4444:
621 fmt = MXR_FORMAT_ARGB4444;
622 break;
623
624 case DRM_FORMAT_XRGB1555:
625 case DRM_FORMAT_ARGB1555:
626 fmt = MXR_FORMAT_ARGB1555;
627 break;
628
629 case DRM_FORMAT_RGB565:
630 fmt = MXR_FORMAT_RGB565;
631 break;
632
633 case DRM_FORMAT_XRGB8888:
634 case DRM_FORMAT_ARGB8888:
635 default:
636 fmt = MXR_FORMAT_ARGB8888;
637 break;
638 }
639
640 /* ratio is already checked by common plane code */
641 x_ratio = state->h_ratio == (1 << 15);
642 y_ratio = state->v_ratio == (1 << 15);
643
644 dst_x_offset = state->crtc.x;
645 dst_y_offset = state->crtc.y;
646
647 /* translate dma address base s.t. the source image offset is zero */
648 dma_addr = exynos_drm_fb_dma_addr(fb, 0)
649 + (state->src.x * fb->format->cpp[0])
650 + (state->src.y * fb->pitches[0]);
651
652 spin_lock_irqsave(&ctx->reg_slock, flags);
653
654 /* setup format */
655 mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
656 MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
657
658 /* setup geometry */
659 mixer_reg_write(ctx, MXR_GRAPHIC_SPAN(win),
660 fb->pitches[0] / fb->format->cpp[0]);
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(ctx, MXR_GRAPHIC_WH(win), val);
667
668 /* setup offsets in display image */
669 val = MXR_GRP_DXY_DX(dst_x_offset);
670 val |= MXR_GRP_DXY_DY(dst_y_offset);
671 mixer_reg_write(ctx, MXR_GRAPHIC_DXY(win), val);
672
673 /* set buffer address to mixer */
674 mixer_reg_write(ctx, MXR_GRAPHIC_BASE(win), dma_addr);
675
676 mixer_cfg_layer(ctx, win, priority, true);
677 mixer_cfg_gfx_blend(ctx, win, pixel_alpha, state->base.alpha);
678
679 spin_unlock_irqrestore(&ctx->reg_slock, flags);
680
681 mixer_regs_dump(ctx);
682 }
683
vp_win_reset(struct mixer_context * ctx)684 static void vp_win_reset(struct mixer_context *ctx)
685 {
686 unsigned int tries = 100;
687
688 vp_reg_write(ctx, VP_SRESET, VP_SRESET_PROCESSING);
689 while (--tries) {
690 /* waiting until VP_SRESET_PROCESSING is 0 */
691 if (~vp_reg_read(ctx, VP_SRESET) & VP_SRESET_PROCESSING)
692 break;
693 mdelay(10);
694 }
695 WARN(tries == 0, "failed to reset Video Processor\n");
696 }
697
mixer_win_reset(struct mixer_context * ctx)698 static void mixer_win_reset(struct mixer_context *ctx)
699 {
700 unsigned long flags;
701
702 spin_lock_irqsave(&ctx->reg_slock, flags);
703
704 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
705
706 /* set output in RGB888 mode */
707 mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
708
709 /* 16 beat burst in DMA */
710 mixer_reg_writemask(ctx, MXR_STATUS, MXR_STATUS_16_BURST,
711 MXR_STATUS_BURST_MASK);
712
713 /* reset default layer priority */
714 mixer_reg_write(ctx, MXR_LAYER_CFG, 0);
715
716 /* set all background colors to RGB (0,0,0) */
717 mixer_reg_write(ctx, MXR_BG_COLOR0, MXR_YCBCR_VAL(0, 128, 128));
718 mixer_reg_write(ctx, MXR_BG_COLOR1, MXR_YCBCR_VAL(0, 128, 128));
719 mixer_reg_write(ctx, MXR_BG_COLOR2, MXR_YCBCR_VAL(0, 128, 128));
720
721 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
722 /* configuration of Video Processor Registers */
723 vp_win_reset(ctx);
724 vp_default_filter(ctx);
725 }
726
727 /* disable all layers */
728 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
729 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
730 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
731 mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
732
733 /* set all source image offsets to zero */
734 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(0), 0);
735 mixer_reg_write(ctx, MXR_GRAPHIC_SXY(1), 0);
736
737 spin_unlock_irqrestore(&ctx->reg_slock, flags);
738 }
739
mixer_irq_handler(int irq,void * arg)740 static irqreturn_t mixer_irq_handler(int irq, void *arg)
741 {
742 struct mixer_context *ctx = arg;
743 u32 val;
744
745 spin_lock(&ctx->reg_slock);
746
747 /* read interrupt status for handling and clearing flags for VSYNC */
748 val = mixer_reg_read(ctx, MXR_INT_STATUS);
749
750 /* handling VSYNC */
751 if (val & MXR_INT_STATUS_VSYNC) {
752 /* vsync interrupt use different bit for read and clear */
753 val |= MXR_INT_CLEAR_VSYNC;
754 val &= ~MXR_INT_STATUS_VSYNC;
755
756 /* interlace scan need to check shadow register */
757 if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)
758 && !mixer_is_synced(ctx))
759 goto out;
760
761 drm_crtc_handle_vblank(&ctx->crtc->base);
762 }
763
764 out:
765 /* clear interrupts */
766 mixer_reg_write(ctx, MXR_INT_STATUS, val);
767
768 spin_unlock(&ctx->reg_slock);
769
770 return IRQ_HANDLED;
771 }
772
mixer_resources_init(struct mixer_context * mixer_ctx)773 static int mixer_resources_init(struct mixer_context *mixer_ctx)
774 {
775 struct device *dev = &mixer_ctx->pdev->dev;
776 struct resource *res;
777 int ret;
778
779 spin_lock_init(&mixer_ctx->reg_slock);
780
781 mixer_ctx->mixer = devm_clk_get(dev, "mixer");
782 if (IS_ERR(mixer_ctx->mixer)) {
783 dev_err(dev, "failed to get clock 'mixer'\n");
784 return -ENODEV;
785 }
786
787 mixer_ctx->hdmi = devm_clk_get(dev, "hdmi");
788 if (IS_ERR(mixer_ctx->hdmi)) {
789 dev_err(dev, "failed to get clock 'hdmi'\n");
790 return PTR_ERR(mixer_ctx->hdmi);
791 }
792
793 mixer_ctx->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
794 if (IS_ERR(mixer_ctx->sclk_hdmi)) {
795 dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
796 return -ENODEV;
797 }
798 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 0);
799 if (res == NULL) {
800 dev_err(dev, "get memory resource failed.\n");
801 return -ENXIO;
802 }
803
804 mixer_ctx->mixer_regs = devm_ioremap(dev, res->start,
805 resource_size(res));
806 if (mixer_ctx->mixer_regs == NULL) {
807 dev_err(dev, "register mapping failed.\n");
808 return -ENXIO;
809 }
810
811 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0);
812 if (res == NULL) {
813 dev_err(dev, "get interrupt resource failed.\n");
814 return -ENXIO;
815 }
816
817 ret = devm_request_irq(dev, res->start, mixer_irq_handler,
818 0, "drm_mixer", mixer_ctx);
819 if (ret) {
820 dev_err(dev, "request interrupt failed.\n");
821 return ret;
822 }
823 mixer_ctx->irq = res->start;
824
825 return 0;
826 }
827
vp_resources_init(struct mixer_context * mixer_ctx)828 static int vp_resources_init(struct mixer_context *mixer_ctx)
829 {
830 struct device *dev = &mixer_ctx->pdev->dev;
831 struct resource *res;
832
833 mixer_ctx->vp = devm_clk_get(dev, "vp");
834 if (IS_ERR(mixer_ctx->vp)) {
835 dev_err(dev, "failed to get clock 'vp'\n");
836 return -ENODEV;
837 }
838
839 if (test_bit(MXR_BIT_HAS_SCLK, &mixer_ctx->flags)) {
840 mixer_ctx->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
841 if (IS_ERR(mixer_ctx->sclk_mixer)) {
842 dev_err(dev, "failed to get clock 'sclk_mixer'\n");
843 return -ENODEV;
844 }
845 mixer_ctx->mout_mixer = devm_clk_get(dev, "mout_mixer");
846 if (IS_ERR(mixer_ctx->mout_mixer)) {
847 dev_err(dev, "failed to get clock 'mout_mixer'\n");
848 return -ENODEV;
849 }
850
851 if (mixer_ctx->sclk_hdmi && mixer_ctx->mout_mixer)
852 clk_set_parent(mixer_ctx->mout_mixer,
853 mixer_ctx->sclk_hdmi);
854 }
855
856 res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
857 if (res == NULL) {
858 dev_err(dev, "get memory resource failed.\n");
859 return -ENXIO;
860 }
861
862 mixer_ctx->vp_regs = devm_ioremap(dev, res->start,
863 resource_size(res));
864 if (mixer_ctx->vp_regs == NULL) {
865 dev_err(dev, "register mapping failed.\n");
866 return -ENXIO;
867 }
868
869 return 0;
870 }
871
mixer_initialize(struct mixer_context * mixer_ctx,struct drm_device * drm_dev)872 static int mixer_initialize(struct mixer_context *mixer_ctx,
873 struct drm_device *drm_dev)
874 {
875 int ret;
876
877 mixer_ctx->drm_dev = drm_dev;
878
879 /* acquire resources: regs, irqs, clocks */
880 ret = mixer_resources_init(mixer_ctx);
881 if (ret) {
882 DRM_DEV_ERROR(mixer_ctx->dev,
883 "mixer_resources_init failed ret=%d\n", ret);
884 return ret;
885 }
886
887 if (test_bit(MXR_BIT_VP_ENABLED, &mixer_ctx->flags)) {
888 /* acquire vp resources: regs, irqs, clocks */
889 ret = vp_resources_init(mixer_ctx);
890 if (ret) {
891 DRM_DEV_ERROR(mixer_ctx->dev,
892 "vp_resources_init failed ret=%d\n", ret);
893 return ret;
894 }
895 }
896
897 return exynos_drm_register_dma(drm_dev, mixer_ctx->dev);
898 }
899
mixer_ctx_remove(struct mixer_context * mixer_ctx)900 static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
901 {
902 exynos_drm_unregister_dma(mixer_ctx->drm_dev, mixer_ctx->dev);
903 }
904
mixer_enable_vblank(struct exynos_drm_crtc * crtc)905 static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
906 {
907 struct mixer_context *mixer_ctx = crtc->ctx;
908
909 __set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
910 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
911 return 0;
912
913 /* enable vsync interrupt */
914 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
915 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
916
917 return 0;
918 }
919
mixer_disable_vblank(struct exynos_drm_crtc * crtc)920 static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
921 {
922 struct mixer_context *mixer_ctx = crtc->ctx;
923
924 __clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
925
926 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
927 return;
928
929 /* disable vsync interrupt */
930 mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
931 mixer_reg_writemask(mixer_ctx, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
932 }
933
mixer_atomic_begin(struct exynos_drm_crtc * crtc)934 static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
935 {
936 struct mixer_context *ctx = crtc->ctx;
937
938 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
939 return;
940
941 if (mixer_wait_for_sync(ctx))
942 dev_err(ctx->dev, "timeout waiting for VSYNC\n");
943 mixer_disable_sync(ctx);
944 }
945
mixer_update_plane(struct exynos_drm_crtc * crtc,struct exynos_drm_plane * plane)946 static void mixer_update_plane(struct exynos_drm_crtc *crtc,
947 struct exynos_drm_plane *plane)
948 {
949 struct mixer_context *mixer_ctx = crtc->ctx;
950
951 DRM_DEV_DEBUG_KMS(mixer_ctx->dev, "win: %d\n", plane->index);
952
953 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
954 return;
955
956 if (plane->index == VP_DEFAULT_WIN)
957 vp_video_buffer(mixer_ctx, plane);
958 else
959 mixer_graph_buffer(mixer_ctx, plane);
960 }
961
mixer_disable_plane(struct exynos_drm_crtc * crtc,struct exynos_drm_plane * plane)962 static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
963 struct exynos_drm_plane *plane)
964 {
965 struct mixer_context *mixer_ctx = crtc->ctx;
966 unsigned long flags;
967
968 DRM_DEV_DEBUG_KMS(mixer_ctx->dev, "win: %d\n", plane->index);
969
970 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
971 return;
972
973 spin_lock_irqsave(&mixer_ctx->reg_slock, flags);
974 mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
975 spin_unlock_irqrestore(&mixer_ctx->reg_slock, flags);
976 }
977
mixer_atomic_flush(struct exynos_drm_crtc * crtc)978 static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
979 {
980 struct mixer_context *mixer_ctx = crtc->ctx;
981
982 if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
983 return;
984
985 mixer_enable_sync(mixer_ctx);
986 exynos_crtc_handle_event(crtc);
987 }
988
mixer_enable(struct exynos_drm_crtc * crtc)989 static void mixer_enable(struct exynos_drm_crtc *crtc)
990 {
991 struct mixer_context *ctx = crtc->ctx;
992
993 if (test_bit(MXR_BIT_POWERED, &ctx->flags))
994 return;
995
996 pm_runtime_get_sync(ctx->dev);
997
998 exynos_drm_pipe_clk_enable(crtc, true);
999
1000 mixer_disable_sync(ctx);
1001
1002 mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
1003
1004 if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
1005 mixer_reg_writemask(ctx, MXR_INT_STATUS, ~0,
1006 MXR_INT_CLEAR_VSYNC);
1007 mixer_reg_writemask(ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
1008 }
1009 mixer_win_reset(ctx);
1010
1011 mixer_commit(ctx);
1012
1013 mixer_enable_sync(ctx);
1014
1015 set_bit(MXR_BIT_POWERED, &ctx->flags);
1016 }
1017
mixer_disable(struct exynos_drm_crtc * crtc)1018 static void mixer_disable(struct exynos_drm_crtc *crtc)
1019 {
1020 struct mixer_context *ctx = crtc->ctx;
1021 int i;
1022
1023 if (!test_bit(MXR_BIT_POWERED, &ctx->flags))
1024 return;
1025
1026 mixer_stop(ctx);
1027 mixer_regs_dump(ctx);
1028
1029 for (i = 0; i < MIXER_WIN_NR; i++)
1030 mixer_disable_plane(crtc, &ctx->planes[i]);
1031
1032 exynos_drm_pipe_clk_enable(crtc, false);
1033
1034 pm_runtime_put(ctx->dev);
1035
1036 clear_bit(MXR_BIT_POWERED, &ctx->flags);
1037 }
1038
mixer_mode_valid(struct exynos_drm_crtc * crtc,const struct drm_display_mode * mode)1039 static int mixer_mode_valid(struct exynos_drm_crtc *crtc,
1040 const struct drm_display_mode *mode)
1041 {
1042 struct mixer_context *ctx = crtc->ctx;
1043 u32 w = mode->hdisplay, h = mode->vdisplay;
1044
1045 DRM_DEV_DEBUG_KMS(ctx->dev, "xres=%d, yres=%d, refresh=%d, intl=%d\n",
1046 w, h, mode->vrefresh,
1047 !!(mode->flags & DRM_MODE_FLAG_INTERLACE));
1048
1049 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1050 return MODE_OK;
1051
1052 if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
1053 (w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
1054 (w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
1055 return MODE_OK;
1056
1057 if ((w == 1024 && h == 768) ||
1058 (w == 1366 && h == 768) ||
1059 (w == 1280 && h == 1024))
1060 return MODE_OK;
1061
1062 return MODE_BAD;
1063 }
1064
mixer_mode_fixup(struct exynos_drm_crtc * crtc,const struct drm_display_mode * mode,struct drm_display_mode * adjusted_mode)1065 static bool mixer_mode_fixup(struct exynos_drm_crtc *crtc,
1066 const struct drm_display_mode *mode,
1067 struct drm_display_mode *adjusted_mode)
1068 {
1069 struct mixer_context *ctx = crtc->ctx;
1070 int width = mode->hdisplay, height = mode->vdisplay, i;
1071
1072 struct {
1073 int hdisplay, vdisplay, htotal, vtotal, scan_val;
1074 } static const modes[] = {
1075 { 720, 480, 858, 525, MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD },
1076 { 720, 576, 864, 625, MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD },
1077 { 1280, 720, 1650, 750, MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD },
1078 { 1920, 1080, 2200, 1125, MXR_CFG_SCAN_HD_1080 |
1079 MXR_CFG_SCAN_HD }
1080 };
1081
1082 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
1083 __set_bit(MXR_BIT_INTERLACE, &ctx->flags);
1084 else
1085 __clear_bit(MXR_BIT_INTERLACE, &ctx->flags);
1086
1087 if (ctx->mxr_ver == MXR_VER_128_0_0_184)
1088 return true;
1089
1090 for (i = 0; i < ARRAY_SIZE(modes); ++i)
1091 if (width <= modes[i].hdisplay && height <= modes[i].vdisplay) {
1092 ctx->scan_value = modes[i].scan_val;
1093 if (width < modes[i].hdisplay ||
1094 height < modes[i].vdisplay) {
1095 adjusted_mode->hdisplay = modes[i].hdisplay;
1096 adjusted_mode->hsync_start = modes[i].hdisplay;
1097 adjusted_mode->hsync_end = modes[i].htotal;
1098 adjusted_mode->htotal = modes[i].htotal;
1099 adjusted_mode->vdisplay = modes[i].vdisplay;
1100 adjusted_mode->vsync_start = modes[i].vdisplay;
1101 adjusted_mode->vsync_end = modes[i].vtotal;
1102 adjusted_mode->vtotal = modes[i].vtotal;
1103 }
1104
1105 return true;
1106 }
1107
1108 return false;
1109 }
1110
1111 static const struct exynos_drm_crtc_ops mixer_crtc_ops = {
1112 .enable = mixer_enable,
1113 .disable = mixer_disable,
1114 .enable_vblank = mixer_enable_vblank,
1115 .disable_vblank = mixer_disable_vblank,
1116 .atomic_begin = mixer_atomic_begin,
1117 .update_plane = mixer_update_plane,
1118 .disable_plane = mixer_disable_plane,
1119 .atomic_flush = mixer_atomic_flush,
1120 .mode_valid = mixer_mode_valid,
1121 .mode_fixup = mixer_mode_fixup,
1122 };
1123
1124 static const struct mixer_drv_data exynos5420_mxr_drv_data = {
1125 .version = MXR_VER_128_0_0_184,
1126 .is_vp_enabled = 0,
1127 };
1128
1129 static const struct mixer_drv_data exynos5250_mxr_drv_data = {
1130 .version = MXR_VER_16_0_33_0,
1131 .is_vp_enabled = 0,
1132 };
1133
1134 static const struct mixer_drv_data exynos4212_mxr_drv_data = {
1135 .version = MXR_VER_0_0_0_16,
1136 .is_vp_enabled = 1,
1137 };
1138
1139 static const struct mixer_drv_data exynos4210_mxr_drv_data = {
1140 .version = MXR_VER_0_0_0_16,
1141 .is_vp_enabled = 1,
1142 .has_sclk = 1,
1143 };
1144
1145 static const struct of_device_id mixer_match_types[] = {
1146 {
1147 .compatible = "samsung,exynos4210-mixer",
1148 .data = &exynos4210_mxr_drv_data,
1149 }, {
1150 .compatible = "samsung,exynos4212-mixer",
1151 .data = &exynos4212_mxr_drv_data,
1152 }, {
1153 .compatible = "samsung,exynos5-mixer",
1154 .data = &exynos5250_mxr_drv_data,
1155 }, {
1156 .compatible = "samsung,exynos5250-mixer",
1157 .data = &exynos5250_mxr_drv_data,
1158 }, {
1159 .compatible = "samsung,exynos5420-mixer",
1160 .data = &exynos5420_mxr_drv_data,
1161 }, {
1162 /* end node */
1163 }
1164 };
1165 MODULE_DEVICE_TABLE(of, mixer_match_types);
1166
mixer_bind(struct device * dev,struct device * manager,void * data)1167 static int mixer_bind(struct device *dev, struct device *manager, void *data)
1168 {
1169 struct mixer_context *ctx = dev_get_drvdata(dev);
1170 struct drm_device *drm_dev = data;
1171 struct exynos_drm_plane *exynos_plane;
1172 unsigned int i;
1173 int ret;
1174
1175 ret = mixer_initialize(ctx, drm_dev);
1176 if (ret)
1177 return ret;
1178
1179 for (i = 0; i < MIXER_WIN_NR; i++) {
1180 if (i == VP_DEFAULT_WIN && !test_bit(MXR_BIT_VP_ENABLED,
1181 &ctx->flags))
1182 continue;
1183
1184 ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1185 &plane_configs[i]);
1186 if (ret)
1187 return ret;
1188 }
1189
1190 exynos_plane = &ctx->planes[DEFAULT_WIN];
1191 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1192 EXYNOS_DISPLAY_TYPE_HDMI, &mixer_crtc_ops, ctx);
1193 if (IS_ERR(ctx->crtc)) {
1194 mixer_ctx_remove(ctx);
1195 ret = PTR_ERR(ctx->crtc);
1196 goto free_ctx;
1197 }
1198
1199 return 0;
1200
1201 free_ctx:
1202 devm_kfree(dev, ctx);
1203 return ret;
1204 }
1205
mixer_unbind(struct device * dev,struct device * master,void * data)1206 static void mixer_unbind(struct device *dev, struct device *master, void *data)
1207 {
1208 struct mixer_context *ctx = dev_get_drvdata(dev);
1209
1210 mixer_ctx_remove(ctx);
1211 }
1212
1213 static const struct component_ops mixer_component_ops = {
1214 .bind = mixer_bind,
1215 .unbind = mixer_unbind,
1216 };
1217
mixer_probe(struct platform_device * pdev)1218 static int mixer_probe(struct platform_device *pdev)
1219 {
1220 struct device *dev = &pdev->dev;
1221 const struct mixer_drv_data *drv;
1222 struct mixer_context *ctx;
1223 int ret;
1224
1225 ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
1226 if (!ctx) {
1227 DRM_DEV_ERROR(dev, "failed to alloc mixer context.\n");
1228 return -ENOMEM;
1229 }
1230
1231 drv = of_device_get_match_data(dev);
1232
1233 ctx->pdev = pdev;
1234 ctx->dev = dev;
1235 ctx->mxr_ver = drv->version;
1236
1237 if (drv->is_vp_enabled)
1238 __set_bit(MXR_BIT_VP_ENABLED, &ctx->flags);
1239 if (drv->has_sclk)
1240 __set_bit(MXR_BIT_HAS_SCLK, &ctx->flags);
1241
1242 platform_set_drvdata(pdev, ctx);
1243
1244 ret = component_add(&pdev->dev, &mixer_component_ops);
1245 if (!ret)
1246 pm_runtime_enable(dev);
1247
1248 return ret;
1249 }
1250
mixer_remove(struct platform_device * pdev)1251 static int mixer_remove(struct platform_device *pdev)
1252 {
1253 pm_runtime_disable(&pdev->dev);
1254
1255 component_del(&pdev->dev, &mixer_component_ops);
1256
1257 return 0;
1258 }
1259
exynos_mixer_suspend(struct device * dev)1260 static int __maybe_unused exynos_mixer_suspend(struct device *dev)
1261 {
1262 struct mixer_context *ctx = dev_get_drvdata(dev);
1263
1264 clk_disable_unprepare(ctx->hdmi);
1265 clk_disable_unprepare(ctx->mixer);
1266 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1267 clk_disable_unprepare(ctx->vp);
1268 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags))
1269 clk_disable_unprepare(ctx->sclk_mixer);
1270 }
1271
1272 return 0;
1273 }
1274
exynos_mixer_resume(struct device * dev)1275 static int __maybe_unused exynos_mixer_resume(struct device *dev)
1276 {
1277 struct mixer_context *ctx = dev_get_drvdata(dev);
1278 int ret;
1279
1280 ret = clk_prepare_enable(ctx->mixer);
1281 if (ret < 0) {
1282 DRM_DEV_ERROR(ctx->dev,
1283 "Failed to prepare_enable the mixer clk [%d]\n",
1284 ret);
1285 return ret;
1286 }
1287 ret = clk_prepare_enable(ctx->hdmi);
1288 if (ret < 0) {
1289 DRM_DEV_ERROR(dev,
1290 "Failed to prepare_enable the hdmi clk [%d]\n",
1291 ret);
1292 return ret;
1293 }
1294 if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
1295 ret = clk_prepare_enable(ctx->vp);
1296 if (ret < 0) {
1297 DRM_DEV_ERROR(dev,
1298 "Failed to prepare_enable the vp clk [%d]\n",
1299 ret);
1300 return ret;
1301 }
1302 if (test_bit(MXR_BIT_HAS_SCLK, &ctx->flags)) {
1303 ret = clk_prepare_enable(ctx->sclk_mixer);
1304 if (ret < 0) {
1305 DRM_DEV_ERROR(dev,
1306 "Failed to prepare_enable the " \
1307 "sclk_mixer clk [%d]\n",
1308 ret);
1309 return ret;
1310 }
1311 }
1312 }
1313
1314 return 0;
1315 }
1316
1317 static const struct dev_pm_ops exynos_mixer_pm_ops = {
1318 SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)
1319 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1320 pm_runtime_force_resume)
1321 };
1322
1323 struct platform_driver mixer_driver = {
1324 .driver = {
1325 .name = "exynos-mixer",
1326 .owner = THIS_MODULE,
1327 .pm = &exynos_mixer_pm_ops,
1328 .of_match_table = mixer_match_types,
1329 },
1330 .probe = mixer_probe,
1331 .remove = mixer_remove,
1332 };
1333
