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10#include <linux/clk.h>
11#include <linux/component.h>
12#include <linux/kernel.h>
13#include <linux/mfd/syscon.h>
14#include <linux/of.h>
15#include <linux/of_device.h>
16#include <linux/platform_device.h>
17#include <linux/pm_runtime.h>
18#include <linux/regmap.h>
19
20#include <video/of_display_timing.h>
21#include <video/of_videomode.h>
22#include <video/samsung_fimd.h>
23
24#include <drm/drm_fourcc.h>
25#include <drm/drm_vblank.h>
26#include <drm/exynos_drm.h>
27
28#include "exynos_drm_crtc.h"
29#include "exynos_drm_drv.h"
30#include "exynos_drm_fb.h"
31#include "exynos_drm_plane.h"
32
33
34
35
36
37
38
39
40#define MIN_FB_WIDTH_FOR_16WORD_BURST 128
41
42
43#define VIDOSD_A(win) (VIDOSD_BASE + 0x00 + (win) * 16)
44#define VIDOSD_B(win) (VIDOSD_BASE + 0x04 + (win) * 16)
45
46
47
48
49#define VIDOSD_C(win) (VIDOSD_BASE + 0x08 + (win) * 16)
50
51#define VIDOSD_D(win) (VIDOSD_BASE + 0x0C + (win) * 16)
52
53#define VIDWnALPHA0(win) (VIDW_ALPHA + 0x00 + (win) * 8)
54#define VIDWnALPHA1(win) (VIDW_ALPHA + 0x04 + (win) * 8)
55
56#define VIDWx_BUF_START(win, buf) (VIDW_BUF_START(buf) + (win) * 8)
57#define VIDWx_BUF_START_S(win, buf) (VIDW_BUF_START_S(buf) + (win) * 8)
58#define VIDWx_BUF_END(win, buf) (VIDW_BUF_END(buf) + (win) * 8)
59#define VIDWx_BUF_SIZE(win, buf) (VIDW_BUF_SIZE(buf) + (win) * 4)
60
61
62#define WKEYCON0_BASE(x) ((WKEYCON0 + 0x140) + ((x - 1) * 8))
63
64#define WKEYCON1_BASE(x) ((WKEYCON1 + 0x140) + ((x - 1) * 8))
65
66
67#define TRIGCON 0x1A4
68#define TRGMODE_ENABLE (1 << 0)
69#define SWTRGCMD_ENABLE (1 << 1)
70
71#define HWTRGEN_ENABLE (1 << 3)
72#define HWTRGMASK_ENABLE (1 << 4)
73
74#define HWTRIGEN_PER_ENABLE (1 << 31)
75
76
77#define VIDOUT_CON 0x000
78#define VIDOUT_CON_F_I80_LDI0 (0x2 << 8)
79
80
81#define I80IFCONFAx(x) (0x1B0 + (x) * 4)
82#define I80IFCONFBx(x) (0x1B8 + (x) * 4)
83#define LCD_CS_SETUP(x) ((x) << 16)
84#define LCD_WR_SETUP(x) ((x) << 12)
85#define LCD_WR_ACTIVE(x) ((x) << 8)
86#define LCD_WR_HOLD(x) ((x) << 4)
87#define I80IFEN_ENABLE (1 << 0)
88
89
90#define WINDOWS_NR 5
91
92
93#define I80_HW_TRG (1 << 1)
94
95struct fimd_driver_data {
96 unsigned int timing_base;
97 unsigned int lcdblk_offset;
98 unsigned int lcdblk_vt_shift;
99 unsigned int lcdblk_bypass_shift;
100 unsigned int lcdblk_mic_bypass_shift;
101 unsigned int trg_type;
102
103 unsigned int has_shadowcon:1;
104 unsigned int has_clksel:1;
105 unsigned int has_limited_fmt:1;
106 unsigned int has_vidoutcon:1;
107 unsigned int has_vtsel:1;
108 unsigned int has_mic_bypass:1;
109 unsigned int has_dp_clk:1;
110 unsigned int has_hw_trigger:1;
111 unsigned int has_trigger_per_te:1;
112};
113
114static struct fimd_driver_data s3c64xx_fimd_driver_data = {
115 .timing_base = 0x0,
116 .has_clksel = 1,
117 .has_limited_fmt = 1,
118};
119
120static struct fimd_driver_data s5pv210_fimd_driver_data = {
121 .timing_base = 0x0,
122 .has_shadowcon = 1,
123 .has_clksel = 1,
124};
125
126static struct fimd_driver_data exynos3_fimd_driver_data = {
127 .timing_base = 0x20000,
128 .lcdblk_offset = 0x210,
129 .lcdblk_bypass_shift = 1,
130 .has_shadowcon = 1,
131 .has_vidoutcon = 1,
132};
133
134static struct fimd_driver_data exynos4_fimd_driver_data = {
135 .timing_base = 0x0,
136 .lcdblk_offset = 0x210,
137 .lcdblk_vt_shift = 10,
138 .lcdblk_bypass_shift = 1,
139 .has_shadowcon = 1,
140 .has_vtsel = 1,
141};
142
143static struct fimd_driver_data exynos5_fimd_driver_data = {
144 .timing_base = 0x20000,
145 .lcdblk_offset = 0x214,
146 .lcdblk_vt_shift = 24,
147 .lcdblk_bypass_shift = 15,
148 .has_shadowcon = 1,
149 .has_vidoutcon = 1,
150 .has_vtsel = 1,
151 .has_dp_clk = 1,
152};
153
154static struct fimd_driver_data exynos5420_fimd_driver_data = {
155 .timing_base = 0x20000,
156 .lcdblk_offset = 0x214,
157 .lcdblk_vt_shift = 24,
158 .lcdblk_bypass_shift = 15,
159 .lcdblk_mic_bypass_shift = 11,
160 .has_shadowcon = 1,
161 .has_vidoutcon = 1,
162 .has_vtsel = 1,
163 .has_mic_bypass = 1,
164 .has_dp_clk = 1,
165};
166
167struct fimd_context {
168 struct device *dev;
169 struct drm_device *drm_dev;
170 void *dma_priv;
171 struct exynos_drm_crtc *crtc;
172 struct exynos_drm_plane planes[WINDOWS_NR];
173 struct exynos_drm_plane_config configs[WINDOWS_NR];
174 struct clk *bus_clk;
175 struct clk *lcd_clk;
176 void __iomem *regs;
177 struct regmap *sysreg;
178 unsigned long irq_flags;
179 u32 vidcon0;
180 u32 vidcon1;
181 u32 vidout_con;
182 u32 i80ifcon;
183 bool i80_if;
184 bool suspended;
185 wait_queue_head_t wait_vsync_queue;
186 atomic_t wait_vsync_event;
187 atomic_t win_updated;
188 atomic_t triggering;
189 u32 clkdiv;
190
191 const struct fimd_driver_data *driver_data;
192 struct drm_encoder *encoder;
193 struct exynos_drm_clk dp_clk;
194};
195
196static const struct of_device_id fimd_driver_dt_match[] = {
197 { .compatible = "samsung,s3c6400-fimd",
198 .data = &s3c64xx_fimd_driver_data },
199 { .compatible = "samsung,s5pv210-fimd",
200 .data = &s5pv210_fimd_driver_data },
201 { .compatible = "samsung,exynos3250-fimd",
202 .data = &exynos3_fimd_driver_data },
203 { .compatible = "samsung,exynos4210-fimd",
204 .data = &exynos4_fimd_driver_data },
205 { .compatible = "samsung,exynos5250-fimd",
206 .data = &exynos5_fimd_driver_data },
207 { .compatible = "samsung,exynos5420-fimd",
208 .data = &exynos5420_fimd_driver_data },
209 {},
210};
211MODULE_DEVICE_TABLE(of, fimd_driver_dt_match);
212
213static const enum drm_plane_type fimd_win_types[WINDOWS_NR] = {
214 DRM_PLANE_TYPE_PRIMARY,
215 DRM_PLANE_TYPE_OVERLAY,
216 DRM_PLANE_TYPE_OVERLAY,
217 DRM_PLANE_TYPE_OVERLAY,
218 DRM_PLANE_TYPE_CURSOR,
219};
220
221static const uint32_t fimd_formats[] = {
222 DRM_FORMAT_C8,
223 DRM_FORMAT_XRGB1555,
224 DRM_FORMAT_RGB565,
225 DRM_FORMAT_XRGB8888,
226 DRM_FORMAT_ARGB8888,
227};
228
229static const unsigned int capabilities[WINDOWS_NR] = {
230 0,
231 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
232 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
233 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
234 EXYNOS_DRM_PLANE_CAP_WIN_BLEND | EXYNOS_DRM_PLANE_CAP_PIX_BLEND,
235};
236
237static inline void fimd_set_bits(struct fimd_context *ctx, u32 reg, u32 mask,
238 u32 val)
239{
240 val = (val & mask) | (readl(ctx->regs + reg) & ~mask);
241 writel(val, ctx->regs + reg);
242}
243
244static int fimd_enable_vblank(struct exynos_drm_crtc *crtc)
245{
246 struct fimd_context *ctx = crtc->ctx;
247 u32 val;
248
249 if (ctx->suspended)
250 return -EPERM;
251
252 if (!test_and_set_bit(0, &ctx->irq_flags)) {
253 val = readl(ctx->regs + VIDINTCON0);
254
255 val |= VIDINTCON0_INT_ENABLE;
256
257 if (ctx->i80_if) {
258 val |= VIDINTCON0_INT_I80IFDONE;
259 val |= VIDINTCON0_INT_SYSMAINCON;
260 val &= ~VIDINTCON0_INT_SYSSUBCON;
261 } else {
262 val |= VIDINTCON0_INT_FRAME;
263
264 val &= ~VIDINTCON0_FRAMESEL0_MASK;
265 val |= VIDINTCON0_FRAMESEL0_FRONTPORCH;
266 val &= ~VIDINTCON0_FRAMESEL1_MASK;
267 val |= VIDINTCON0_FRAMESEL1_NONE;
268 }
269
270 writel(val, ctx->regs + VIDINTCON0);
271 }
272
273 return 0;
274}
275
276static void fimd_disable_vblank(struct exynos_drm_crtc *crtc)
277{
278 struct fimd_context *ctx = crtc->ctx;
279 u32 val;
280
281 if (ctx->suspended)
282 return;
283
284 if (test_and_clear_bit(0, &ctx->irq_flags)) {
285 val = readl(ctx->regs + VIDINTCON0);
286
287 val &= ~VIDINTCON0_INT_ENABLE;
288
289 if (ctx->i80_if) {
290 val &= ~VIDINTCON0_INT_I80IFDONE;
291 val &= ~VIDINTCON0_INT_SYSMAINCON;
292 val &= ~VIDINTCON0_INT_SYSSUBCON;
293 } else
294 val &= ~VIDINTCON0_INT_FRAME;
295
296 writel(val, ctx->regs + VIDINTCON0);
297 }
298}
299
300static void fimd_wait_for_vblank(struct exynos_drm_crtc *crtc)
301{
302 struct fimd_context *ctx = crtc->ctx;
303
304 if (ctx->suspended)
305 return;
306
307 atomic_set(&ctx->wait_vsync_event, 1);
308
309
310
311
312
313 if (!wait_event_timeout(ctx->wait_vsync_queue,
314 !atomic_read(&ctx->wait_vsync_event),
315 HZ/20))
316 DRM_DEV_DEBUG_KMS(ctx->dev, "vblank wait timed out.\n");
317}
318
319static void fimd_enable_video_output(struct fimd_context *ctx, unsigned int win,
320 bool enable)
321{
322 u32 val = readl(ctx->regs + WINCON(win));
323
324 if (enable)
325 val |= WINCONx_ENWIN;
326 else
327 val &= ~WINCONx_ENWIN;
328
329 writel(val, ctx->regs + WINCON(win));
330}
331
332static void fimd_enable_shadow_channel_path(struct fimd_context *ctx,
333 unsigned int win,
334 bool enable)
335{
336 u32 val = readl(ctx->regs + SHADOWCON);
337
338 if (enable)
339 val |= SHADOWCON_CHx_ENABLE(win);
340 else
341 val &= ~SHADOWCON_CHx_ENABLE(win);
342
343 writel(val, ctx->regs + SHADOWCON);
344}
345
346static int fimd_clear_channels(struct exynos_drm_crtc *crtc)
347{
348 struct fimd_context *ctx = crtc->ctx;
349 unsigned int win, ch_enabled = 0;
350 int ret;
351
352
353 ret = pm_runtime_resume_and_get(ctx->dev);
354 if (ret < 0) {
355 dev_err(ctx->dev, "failed to enable FIMD device.\n");
356 return ret;
357 }
358
359 clk_prepare_enable(ctx->bus_clk);
360 clk_prepare_enable(ctx->lcd_clk);
361
362
363 for (win = 0; win < WINDOWS_NR; win++) {
364 u32 val = readl(ctx->regs + WINCON(win));
365
366 if (val & WINCONx_ENWIN) {
367 fimd_enable_video_output(ctx, win, false);
368
369 if (ctx->driver_data->has_shadowcon)
370 fimd_enable_shadow_channel_path(ctx, win,
371 false);
372
373 ch_enabled = 1;
374 }
375 }
376
377
378 if (ch_enabled) {
379 ctx->suspended = false;
380
381 fimd_enable_vblank(ctx->crtc);
382 fimd_wait_for_vblank(ctx->crtc);
383 fimd_disable_vblank(ctx->crtc);
384
385 ctx->suspended = true;
386 }
387
388 clk_disable_unprepare(ctx->lcd_clk);
389 clk_disable_unprepare(ctx->bus_clk);
390
391 pm_runtime_put(ctx->dev);
392
393 return 0;
394}
395
396
397static int fimd_atomic_check(struct exynos_drm_crtc *crtc,
398 struct drm_crtc_state *state)
399{
400 struct drm_display_mode *mode = &state->adjusted_mode;
401 struct fimd_context *ctx = crtc->ctx;
402 unsigned long ideal_clk, lcd_rate;
403 u32 clkdiv;
404
405 if (mode->clock == 0) {
406 DRM_DEV_ERROR(ctx->dev, "Mode has zero clock value.\n");
407 return -EINVAL;
408 }
409
410 ideal_clk = mode->clock * 1000;
411
412 if (ctx->i80_if) {
413
414
415
416
417 ideal_clk *= 2;
418 }
419
420 lcd_rate = clk_get_rate(ctx->lcd_clk);
421 if (2 * lcd_rate < ideal_clk) {
422 DRM_DEV_ERROR(ctx->dev,
423 "sclk_fimd clock too low(%lu) for requested pixel clock(%lu)\n",
424 lcd_rate, ideal_clk);
425 return -EINVAL;
426 }
427
428
429 clkdiv = DIV_ROUND_CLOSEST(lcd_rate, ideal_clk);
430 if (clkdiv >= 0x200) {
431 DRM_DEV_ERROR(ctx->dev, "requested pixel clock(%lu) too low\n",
432 ideal_clk);
433 return -EINVAL;
434 }
435
436 ctx->clkdiv = (clkdiv < 0x100) ? clkdiv : 0xff;
437
438 return 0;
439}
440
441static void fimd_setup_trigger(struct fimd_context *ctx)
442{
443 void __iomem *timing_base = ctx->regs + ctx->driver_data->timing_base;
444 u32 trg_type = ctx->driver_data->trg_type;
445 u32 val = readl(timing_base + TRIGCON);
446
447 val &= ~(TRGMODE_ENABLE);
448
449 if (trg_type == I80_HW_TRG) {
450 if (ctx->driver_data->has_hw_trigger)
451 val |= HWTRGEN_ENABLE | HWTRGMASK_ENABLE;
452 if (ctx->driver_data->has_trigger_per_te)
453 val |= HWTRIGEN_PER_ENABLE;
454 } else {
455 val |= TRGMODE_ENABLE;
456 }
457
458 writel(val, timing_base + TRIGCON);
459}
460
461static void fimd_commit(struct exynos_drm_crtc *crtc)
462{
463 struct fimd_context *ctx = crtc->ctx;
464 struct drm_display_mode *mode = &crtc->base.state->adjusted_mode;
465 const struct fimd_driver_data *driver_data = ctx->driver_data;
466 void *timing_base = ctx->regs + driver_data->timing_base;
467 u32 val;
468
469 if (ctx->suspended)
470 return;
471
472
473 if (mode->htotal == 0 || mode->vtotal == 0)
474 return;
475
476 if (ctx->i80_if) {
477 val = ctx->i80ifcon | I80IFEN_ENABLE;
478 writel(val, timing_base + I80IFCONFAx(0));
479
480
481 writel(0, timing_base + I80IFCONFBx(0));
482
483
484 if (driver_data->has_vtsel && ctx->sysreg &&
485 regmap_update_bits(ctx->sysreg,
486 driver_data->lcdblk_offset,
487 0x3 << driver_data->lcdblk_vt_shift,
488 0x1 << driver_data->lcdblk_vt_shift)) {
489 DRM_DEV_ERROR(ctx->dev,
490 "Failed to update sysreg for I80 i/f.\n");
491 return;
492 }
493 } else {
494 int vsync_len, vbpd, vfpd, hsync_len, hbpd, hfpd;
495 u32 vidcon1;
496
497
498 vidcon1 = ctx->vidcon1;
499 if (mode->flags & DRM_MODE_FLAG_NVSYNC)
500 vidcon1 |= VIDCON1_INV_VSYNC;
501 if (mode->flags & DRM_MODE_FLAG_NHSYNC)
502 vidcon1 |= VIDCON1_INV_HSYNC;
503 writel(vidcon1, ctx->regs + driver_data->timing_base + VIDCON1);
504
505
506 vsync_len = mode->crtc_vsync_end - mode->crtc_vsync_start;
507 vbpd = mode->crtc_vtotal - mode->crtc_vsync_end;
508 vfpd = mode->crtc_vsync_start - mode->crtc_vdisplay;
509
510 val = VIDTCON0_VBPD(vbpd - 1) |
511 VIDTCON0_VFPD(vfpd - 1) |
512 VIDTCON0_VSPW(vsync_len - 1);
513 writel(val, ctx->regs + driver_data->timing_base + VIDTCON0);
514
515
516 hsync_len = mode->crtc_hsync_end - mode->crtc_hsync_start;
517 hbpd = mode->crtc_htotal - mode->crtc_hsync_end;
518 hfpd = mode->crtc_hsync_start - mode->crtc_hdisplay;
519
520 val = VIDTCON1_HBPD(hbpd - 1) |
521 VIDTCON1_HFPD(hfpd - 1) |
522 VIDTCON1_HSPW(hsync_len - 1);
523 writel(val, ctx->regs + driver_data->timing_base + VIDTCON1);
524 }
525
526 if (driver_data->has_vidoutcon)
527 writel(ctx->vidout_con, timing_base + VIDOUT_CON);
528
529
530 if (ctx->sysreg && regmap_update_bits(ctx->sysreg,
531 driver_data->lcdblk_offset,
532 0x1 << driver_data->lcdblk_bypass_shift,
533 0x1 << driver_data->lcdblk_bypass_shift)) {
534 DRM_DEV_ERROR(ctx->dev,
535 "Failed to update sysreg for bypass setting.\n");
536 return;
537 }
538
539
540
541
542 if (driver_data->has_mic_bypass && ctx->sysreg &&
543 regmap_update_bits(ctx->sysreg,
544 driver_data->lcdblk_offset,
545 0x1 << driver_data->lcdblk_mic_bypass_shift,
546 0x1 << driver_data->lcdblk_mic_bypass_shift)) {
547 DRM_DEV_ERROR(ctx->dev,
548 "Failed to update sysreg for bypass mic.\n");
549 return;
550 }
551
552
553 val = VIDTCON2_LINEVAL(mode->vdisplay - 1) |
554 VIDTCON2_HOZVAL(mode->hdisplay - 1) |
555 VIDTCON2_LINEVAL_E(mode->vdisplay - 1) |
556 VIDTCON2_HOZVAL_E(mode->hdisplay - 1);
557 writel(val, ctx->regs + driver_data->timing_base + VIDTCON2);
558
559 fimd_setup_trigger(ctx);
560
561
562
563
564
565 val = ctx->vidcon0;
566 val |= VIDCON0_ENVID | VIDCON0_ENVID_F;
567
568 if (ctx->driver_data->has_clksel)
569 val |= VIDCON0_CLKSEL_LCD;
570
571 if (ctx->clkdiv > 1)
572 val |= VIDCON0_CLKVAL_F(ctx->clkdiv - 1) | VIDCON0_CLKDIR;
573
574 writel(val, ctx->regs + VIDCON0);
575}
576
577static void fimd_win_set_bldeq(struct fimd_context *ctx, unsigned int win,
578 unsigned int alpha, unsigned int pixel_alpha)
579{
580 u32 mask = BLENDEQ_A_FUNC_F(0xf) | BLENDEQ_B_FUNC_F(0xf);
581 u32 val = 0;
582
583 switch (pixel_alpha) {
584 case DRM_MODE_BLEND_PIXEL_NONE:
585 case DRM_MODE_BLEND_COVERAGE:
586 val |= BLENDEQ_A_FUNC_F(BLENDEQ_ALPHA_A);
587 val |= BLENDEQ_B_FUNC_F(BLENDEQ_ONE_MINUS_ALPHA_A);
588 break;
589 case DRM_MODE_BLEND_PREMULTI:
590 default:
591 if (alpha != DRM_BLEND_ALPHA_OPAQUE) {
592 val |= BLENDEQ_A_FUNC_F(BLENDEQ_ALPHA0);
593 val |= BLENDEQ_B_FUNC_F(BLENDEQ_ONE_MINUS_ALPHA_A);
594 } else {
595 val |= BLENDEQ_A_FUNC_F(BLENDEQ_ONE);
596 val |= BLENDEQ_B_FUNC_F(BLENDEQ_ONE_MINUS_ALPHA_A);
597 }
598 break;
599 }
600 fimd_set_bits(ctx, BLENDEQx(win), mask, val);
601}
602
603static void fimd_win_set_bldmod(struct fimd_context *ctx, unsigned int win,
604 unsigned int alpha, unsigned int pixel_alpha)
605{
606 u32 win_alpha_l = (alpha >> 8) & 0xf;
607 u32 win_alpha_h = alpha >> 12;
608 u32 val = 0;
609
610 switch (pixel_alpha) {
611 case DRM_MODE_BLEND_PIXEL_NONE:
612 break;
613 case DRM_MODE_BLEND_COVERAGE:
614 case DRM_MODE_BLEND_PREMULTI:
615 default:
616 val |= WINCON1_ALPHA_SEL;
617 val |= WINCON1_BLD_PIX;
618 val |= WINCON1_ALPHA_MUL;
619 break;
620 }
621 fimd_set_bits(ctx, WINCON(win), WINCONx_BLEND_MODE_MASK, val);
622
623
624 val = VIDISD14C_ALPHA0_R(win_alpha_h) |
625 VIDISD14C_ALPHA0_G(win_alpha_h) |
626 VIDISD14C_ALPHA0_B(win_alpha_h) |
627 VIDISD14C_ALPHA1_R(0x0) |
628 VIDISD14C_ALPHA1_G(0x0) |
629 VIDISD14C_ALPHA1_B(0x0);
630 writel(val, ctx->regs + VIDOSD_C(win));
631
632 val = VIDW_ALPHA_R(win_alpha_l) | VIDW_ALPHA_G(win_alpha_l) |
633 VIDW_ALPHA_B(win_alpha_l);
634 writel(val, ctx->regs + VIDWnALPHA0(win));
635
636 val = VIDW_ALPHA_R(0x0) | VIDW_ALPHA_G(0x0) |
637 VIDW_ALPHA_B(0x0);
638 writel(val, ctx->regs + VIDWnALPHA1(win));
639
640 fimd_set_bits(ctx, BLENDCON, BLENDCON_NEW_MASK,
641 BLENDCON_NEW_8BIT_ALPHA_VALUE);
642}
643
644static void fimd_win_set_pixfmt(struct fimd_context *ctx, unsigned int win,
645 struct drm_framebuffer *fb, int width)
646{
647 struct exynos_drm_plane plane = ctx->planes[win];
648 struct exynos_drm_plane_state *state =
649 to_exynos_plane_state(plane.base.state);
650 uint32_t pixel_format = fb->format->format;
651 unsigned int alpha = state->base.alpha;
652 u32 val = WINCONx_ENWIN;
653 unsigned int pixel_alpha;
654
655 if (fb->format->has_alpha)
656 pixel_alpha = state->base.pixel_blend_mode;
657 else
658 pixel_alpha = DRM_MODE_BLEND_PIXEL_NONE;
659
660
661
662
663
664 if (ctx->driver_data->has_limited_fmt && !win) {
665 if (pixel_format == DRM_FORMAT_ARGB8888)
666 pixel_format = DRM_FORMAT_XRGB8888;
667 }
668
669 switch (pixel_format) {
670 case DRM_FORMAT_C8:
671 val |= WINCON0_BPPMODE_8BPP_PALETTE;
672 val |= WINCONx_BURSTLEN_8WORD;
673 val |= WINCONx_BYTSWP;
674 break;
675 case DRM_FORMAT_XRGB1555:
676 val |= WINCON0_BPPMODE_16BPP_1555;
677 val |= WINCONx_HAWSWP;
678 val |= WINCONx_BURSTLEN_16WORD;
679 break;
680 case DRM_FORMAT_RGB565:
681 val |= WINCON0_BPPMODE_16BPP_565;
682 val |= WINCONx_HAWSWP;
683 val |= WINCONx_BURSTLEN_16WORD;
684 break;
685 case DRM_FORMAT_XRGB8888:
686 val |= WINCON0_BPPMODE_24BPP_888;
687 val |= WINCONx_WSWP;
688 val |= WINCONx_BURSTLEN_16WORD;
689 break;
690 case DRM_FORMAT_ARGB8888:
691 default:
692 val |= WINCON1_BPPMODE_25BPP_A1888;
693 val |= WINCONx_WSWP;
694 val |= WINCONx_BURSTLEN_16WORD;
695 break;
696 }
697
698
699
700
701
702
703
704
705
706 if (width < MIN_FB_WIDTH_FOR_16WORD_BURST) {
707 val &= ~WINCONx_BURSTLEN_MASK;
708 val |= WINCONx_BURSTLEN_4WORD;
709 }
710 fimd_set_bits(ctx, WINCON(win), ~WINCONx_BLEND_MODE_MASK, val);
711
712
713 if (win != 0) {
714 fimd_win_set_bldmod(ctx, win, alpha, pixel_alpha);
715 fimd_win_set_bldeq(ctx, win, alpha, pixel_alpha);
716 }
717}
718
719static void fimd_win_set_colkey(struct fimd_context *ctx, unsigned int win)
720{
721 unsigned int keycon0 = 0, keycon1 = 0;
722
723 keycon0 = ~(WxKEYCON0_KEYBL_EN | WxKEYCON0_KEYEN_F |
724 WxKEYCON0_DIRCON) | WxKEYCON0_COMPKEY(0);
725
726 keycon1 = WxKEYCON1_COLVAL(0xffffffff);
727
728 writel(keycon0, ctx->regs + WKEYCON0_BASE(win));
729 writel(keycon1, ctx->regs + WKEYCON1_BASE(win));
730}
731
732
733
734
735
736
737
738
739static void fimd_shadow_protect_win(struct fimd_context *ctx,
740 unsigned int win, bool protect)
741{
742 u32 reg, bits, val;
743
744
745
746
747
748
749
750
751
752
753
754 if (ctx->driver_data->has_shadowcon) {
755 reg = SHADOWCON;
756 bits = SHADOWCON_WINx_PROTECT(win);
757 } else {
758 reg = PRTCON;
759 bits = PRTCON_PROTECT;
760 }
761
762 val = readl(ctx->regs + reg);
763 if (protect)
764 val |= bits;
765 else
766 val &= ~bits;
767 writel(val, ctx->regs + reg);
768}
769
770static void fimd_atomic_begin(struct exynos_drm_crtc *crtc)
771{
772 struct fimd_context *ctx = crtc->ctx;
773 int i;
774
775 if (ctx->suspended)
776 return;
777
778 for (i = 0; i < WINDOWS_NR; i++)
779 fimd_shadow_protect_win(ctx, i, true);
780}
781
782static void fimd_atomic_flush(struct exynos_drm_crtc *crtc)
783{
784 struct fimd_context *ctx = crtc->ctx;
785 int i;
786
787 if (ctx->suspended)
788 return;
789
790 for (i = 0; i < WINDOWS_NR; i++)
791 fimd_shadow_protect_win(ctx, i, false);
792
793 exynos_crtc_handle_event(crtc);
794}
795
796static void fimd_update_plane(struct exynos_drm_crtc *crtc,
797 struct exynos_drm_plane *plane)
798{
799 struct exynos_drm_plane_state *state =
800 to_exynos_plane_state(plane->base.state);
801 struct fimd_context *ctx = crtc->ctx;
802 struct drm_framebuffer *fb = state->base.fb;
803 dma_addr_t dma_addr;
804 unsigned long val, size, offset;
805 unsigned int last_x, last_y, buf_offsize, line_size;
806 unsigned int win = plane->index;
807 unsigned int cpp = fb->format->cpp[0];
808 unsigned int pitch = fb->pitches[0];
809
810 if (ctx->suspended)
811 return;
812
813 offset = state->src.x * cpp;
814 offset += state->src.y * pitch;
815
816
817 dma_addr = exynos_drm_fb_dma_addr(fb, 0) + offset;
818 val = (unsigned long)dma_addr;
819 writel(val, ctx->regs + VIDWx_BUF_START(win, 0));
820
821
822 size = pitch * state->crtc.h;
823 val = (unsigned long)(dma_addr + size);
824 writel(val, ctx->regs + VIDWx_BUF_END(win, 0));
825
826 DRM_DEV_DEBUG_KMS(ctx->dev,
827 "start addr = 0x%lx, end addr = 0x%lx, size = 0x%lx\n",
828 (unsigned long)dma_addr, val, size);
829 DRM_DEV_DEBUG_KMS(ctx->dev, "ovl_width = %d, ovl_height = %d\n",
830 state->crtc.w, state->crtc.h);
831
832
833 buf_offsize = pitch - (state->crtc.w * cpp);
834 line_size = state->crtc.w * cpp;
835 val = VIDW_BUF_SIZE_OFFSET(buf_offsize) |
836 VIDW_BUF_SIZE_PAGEWIDTH(line_size) |
837 VIDW_BUF_SIZE_OFFSET_E(buf_offsize) |
838 VIDW_BUF_SIZE_PAGEWIDTH_E(line_size);
839 writel(val, ctx->regs + VIDWx_BUF_SIZE(win, 0));
840
841
842 val = VIDOSDxA_TOPLEFT_X(state->crtc.x) |
843 VIDOSDxA_TOPLEFT_Y(state->crtc.y) |
844 VIDOSDxA_TOPLEFT_X_E(state->crtc.x) |
845 VIDOSDxA_TOPLEFT_Y_E(state->crtc.y);
846 writel(val, ctx->regs + VIDOSD_A(win));
847
848 last_x = state->crtc.x + state->crtc.w;
849 if (last_x)
850 last_x--;
851 last_y = state->crtc.y + state->crtc.h;
852 if (last_y)
853 last_y--;
854
855 val = VIDOSDxB_BOTRIGHT_X(last_x) | VIDOSDxB_BOTRIGHT_Y(last_y) |
856 VIDOSDxB_BOTRIGHT_X_E(last_x) | VIDOSDxB_BOTRIGHT_Y_E(last_y);
857
858 writel(val, ctx->regs + VIDOSD_B(win));
859
860 DRM_DEV_DEBUG_KMS(ctx->dev,
861 "osd pos: tx = %d, ty = %d, bx = %d, by = %d\n",
862 state->crtc.x, state->crtc.y, last_x, last_y);
863
864
865 if (win != 3 && win != 4) {
866 u32 offset = VIDOSD_D(win);
867 if (win == 0)
868 offset = VIDOSD_C(win);
869 val = state->crtc.w * state->crtc.h;
870 writel(val, ctx->regs + offset);
871
872 DRM_DEV_DEBUG_KMS(ctx->dev, "osd size = 0x%x\n",
873 (unsigned int)val);
874 }
875
876 fimd_win_set_pixfmt(ctx, win, fb, state->src.w);
877
878
879 if (win != 0)
880 fimd_win_set_colkey(ctx, win);
881
882 fimd_enable_video_output(ctx, win, true);
883
884 if (ctx->driver_data->has_shadowcon)
885 fimd_enable_shadow_channel_path(ctx, win, true);
886
887 if (ctx->i80_if)
888 atomic_set(&ctx->win_updated, 1);
889}
890
891static void fimd_disable_plane(struct exynos_drm_crtc *crtc,
892 struct exynos_drm_plane *plane)
893{
894 struct fimd_context *ctx = crtc->ctx;
895 unsigned int win = plane->index;
896
897 if (ctx->suspended)
898 return;
899
900 fimd_enable_video_output(ctx, win, false);
901
902 if (ctx->driver_data->has_shadowcon)
903 fimd_enable_shadow_channel_path(ctx, win, false);
904}
905
906static void fimd_atomic_enable(struct exynos_drm_crtc *crtc)
907{
908 struct fimd_context *ctx = crtc->ctx;
909
910 if (!ctx->suspended)
911 return;
912
913 ctx->suspended = false;
914
915 if (pm_runtime_resume_and_get(ctx->dev) < 0) {
916 dev_warn(ctx->dev, "failed to enable FIMD device.\n");
917 return;
918 }
919
920
921 if (test_and_clear_bit(0, &ctx->irq_flags))
922 fimd_enable_vblank(ctx->crtc);
923
924 fimd_commit(ctx->crtc);
925}
926
927static void fimd_atomic_disable(struct exynos_drm_crtc *crtc)
928{
929 struct fimd_context *ctx = crtc->ctx;
930 int i;
931
932 if (ctx->suspended)
933 return;
934
935
936
937
938
939
940 for (i = 0; i < WINDOWS_NR; i++)
941 fimd_disable_plane(crtc, &ctx->planes[i]);
942
943 fimd_enable_vblank(crtc);
944 fimd_wait_for_vblank(crtc);
945 fimd_disable_vblank(crtc);
946
947 writel(0, ctx->regs + VIDCON0);
948
949 pm_runtime_put_sync(ctx->dev);
950 ctx->suspended = true;
951}
952
953static void fimd_trigger(struct device *dev)
954{
955 struct fimd_context *ctx = dev_get_drvdata(dev);
956 const struct fimd_driver_data *driver_data = ctx->driver_data;
957 void *timing_base = ctx->regs + driver_data->timing_base;
958 u32 reg;
959
960
961
962
963
964 if (atomic_read(&ctx->triggering))
965 return;
966
967
968 atomic_set(&ctx->triggering, 1);
969
970 reg = readl(timing_base + TRIGCON);
971 reg |= (TRGMODE_ENABLE | SWTRGCMD_ENABLE);
972 writel(reg, timing_base + TRIGCON);
973
974
975
976
977
978 if (!test_bit(0, &ctx->irq_flags))
979 atomic_set(&ctx->triggering, 0);
980}
981
982static void fimd_te_handler(struct exynos_drm_crtc *crtc)
983{
984 struct fimd_context *ctx = crtc->ctx;
985 u32 trg_type = ctx->driver_data->trg_type;
986
987
988 if (!ctx->drm_dev)
989 return;
990
991 if (trg_type == I80_HW_TRG)
992 goto out;
993
994
995
996
997
998 if (atomic_add_unless(&ctx->win_updated, -1, 0))
999 fimd_trigger(ctx->dev);
1000
1001out:
1002
1003 if (atomic_read(&ctx->wait_vsync_event)) {
1004 atomic_set(&ctx->wait_vsync_event, 0);
1005 wake_up(&ctx->wait_vsync_queue);
1006 }
1007
1008 if (test_bit(0, &ctx->irq_flags))
1009 drm_crtc_handle_vblank(&ctx->crtc->base);
1010}
1011
1012static void fimd_dp_clock_enable(struct exynos_drm_clk *clk, bool enable)
1013{
1014 struct fimd_context *ctx = container_of(clk, struct fimd_context,
1015 dp_clk);
1016 u32 val = enable ? DP_MIE_CLK_DP_ENABLE : DP_MIE_CLK_DISABLE;
1017 writel(val, ctx->regs + DP_MIE_CLKCON);
1018}
1019
1020static const struct exynos_drm_crtc_ops fimd_crtc_ops = {
1021 .atomic_enable = fimd_atomic_enable,
1022 .atomic_disable = fimd_atomic_disable,
1023 .enable_vblank = fimd_enable_vblank,
1024 .disable_vblank = fimd_disable_vblank,
1025 .atomic_begin = fimd_atomic_begin,
1026 .update_plane = fimd_update_plane,
1027 .disable_plane = fimd_disable_plane,
1028 .atomic_flush = fimd_atomic_flush,
1029 .atomic_check = fimd_atomic_check,
1030 .te_handler = fimd_te_handler,
1031};
1032
1033static irqreturn_t fimd_irq_handler(int irq, void *dev_id)
1034{
1035 struct fimd_context *ctx = (struct fimd_context *)dev_id;
1036 u32 val, clear_bit;
1037
1038 val = readl(ctx->regs + VIDINTCON1);
1039
1040 clear_bit = ctx->i80_if ? VIDINTCON1_INT_I80 : VIDINTCON1_INT_FRAME;
1041 if (val & clear_bit)
1042 writel(clear_bit, ctx->regs + VIDINTCON1);
1043
1044
1045 if (!ctx->drm_dev)
1046 goto out;
1047
1048 if (!ctx->i80_if)
1049 drm_crtc_handle_vblank(&ctx->crtc->base);
1050
1051 if (ctx->i80_if) {
1052
1053 atomic_set(&ctx->triggering, 0);
1054 } else {
1055
1056 if (atomic_read(&ctx->wait_vsync_event)) {
1057 atomic_set(&ctx->wait_vsync_event, 0);
1058 wake_up(&ctx->wait_vsync_queue);
1059 }
1060 }
1061
1062out:
1063 return IRQ_HANDLED;
1064}
1065
1066static int fimd_bind(struct device *dev, struct device *master, void *data)
1067{
1068 struct fimd_context *ctx = dev_get_drvdata(dev);
1069 struct drm_device *drm_dev = data;
1070 struct exynos_drm_plane *exynos_plane;
1071 unsigned int i;
1072 int ret;
1073
1074 ctx->drm_dev = drm_dev;
1075
1076 for (i = 0; i < WINDOWS_NR; i++) {
1077 ctx->configs[i].pixel_formats = fimd_formats;
1078 ctx->configs[i].num_pixel_formats = ARRAY_SIZE(fimd_formats);
1079 ctx->configs[i].zpos = i;
1080 ctx->configs[i].type = fimd_win_types[i];
1081 ctx->configs[i].capabilities = capabilities[i];
1082 ret = exynos_plane_init(drm_dev, &ctx->planes[i], i,
1083 &ctx->configs[i]);
1084 if (ret)
1085 return ret;
1086 }
1087
1088 exynos_plane = &ctx->planes[DEFAULT_WIN];
1089 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
1090 EXYNOS_DISPLAY_TYPE_LCD, &fimd_crtc_ops, ctx);
1091 if (IS_ERR(ctx->crtc))
1092 return PTR_ERR(ctx->crtc);
1093
1094 if (ctx->driver_data->has_dp_clk) {
1095 ctx->dp_clk.enable = fimd_dp_clock_enable;
1096 ctx->crtc->pipe_clk = &ctx->dp_clk;
1097 }
1098
1099 if (ctx->encoder)
1100 exynos_dpi_bind(drm_dev, ctx->encoder);
1101
1102 if (is_drm_iommu_supported(drm_dev)) {
1103 int ret;
1104
1105 ret = fimd_clear_channels(ctx->crtc);
1106 if (ret < 0)
1107 return ret;
1108 }
1109
1110 return exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv);
1111}
1112
1113static void fimd_unbind(struct device *dev, struct device *master,
1114 void *data)
1115{
1116 struct fimd_context *ctx = dev_get_drvdata(dev);
1117
1118 fimd_atomic_disable(ctx->crtc);
1119
1120 exynos_drm_unregister_dma(ctx->drm_dev, ctx->dev, &ctx->dma_priv);
1121
1122 if (ctx->encoder)
1123 exynos_dpi_remove(ctx->encoder);
1124}
1125
1126static const struct component_ops fimd_component_ops = {
1127 .bind = fimd_bind,
1128 .unbind = fimd_unbind,
1129};
1130
1131static int fimd_probe(struct platform_device *pdev)
1132{
1133 struct device *dev = &pdev->dev;
1134 struct fimd_context *ctx;
1135 struct device_node *i80_if_timings;
1136 int ret;
1137
1138 if (!dev->of_node)
1139 return -ENODEV;
1140
1141 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
1142 if (!ctx)
1143 return -ENOMEM;
1144
1145 ctx->dev = dev;
1146 ctx->suspended = true;
1147 ctx->driver_data = of_device_get_match_data(dev);
1148
1149 if (of_property_read_bool(dev->of_node, "samsung,invert-vden"))
1150 ctx->vidcon1 |= VIDCON1_INV_VDEN;
1151 if (of_property_read_bool(dev->of_node, "samsung,invert-vclk"))
1152 ctx->vidcon1 |= VIDCON1_INV_VCLK;
1153
1154 i80_if_timings = of_get_child_by_name(dev->of_node, "i80-if-timings");
1155 if (i80_if_timings) {
1156 u32 val;
1157
1158 ctx->i80_if = true;
1159
1160 if (ctx->driver_data->has_vidoutcon)
1161 ctx->vidout_con |= VIDOUT_CON_F_I80_LDI0;
1162 else
1163 ctx->vidcon0 |= VIDCON0_VIDOUT_I80_LDI0;
1164
1165
1166
1167
1168 ctx->vidcon0 |= VIDCON0_DSI_EN;
1169
1170 if (of_property_read_u32(i80_if_timings, "cs-setup", &val))
1171 val = 0;
1172 ctx->i80ifcon = LCD_CS_SETUP(val);
1173 if (of_property_read_u32(i80_if_timings, "wr-setup", &val))
1174 val = 0;
1175 ctx->i80ifcon |= LCD_WR_SETUP(val);
1176 if (of_property_read_u32(i80_if_timings, "wr-active", &val))
1177 val = 1;
1178 ctx->i80ifcon |= LCD_WR_ACTIVE(val);
1179 if (of_property_read_u32(i80_if_timings, "wr-hold", &val))
1180 val = 0;
1181 ctx->i80ifcon |= LCD_WR_HOLD(val);
1182 }
1183 of_node_put(i80_if_timings);
1184
1185 ctx->sysreg = syscon_regmap_lookup_by_phandle(dev->of_node,
1186 "samsung,sysreg");
1187 if (IS_ERR(ctx->sysreg)) {
1188 dev_warn(dev, "failed to get system register.\n");
1189 ctx->sysreg = NULL;
1190 }
1191
1192 ctx->bus_clk = devm_clk_get(dev, "fimd");
1193 if (IS_ERR(ctx->bus_clk)) {
1194 dev_err(dev, "failed to get bus clock\n");
1195 return PTR_ERR(ctx->bus_clk);
1196 }
1197
1198 ctx->lcd_clk = devm_clk_get(dev, "sclk_fimd");
1199 if (IS_ERR(ctx->lcd_clk)) {
1200 dev_err(dev, "failed to get lcd clock\n");
1201 return PTR_ERR(ctx->lcd_clk);
1202 }
1203
1204 ctx->regs = devm_platform_ioremap_resource(pdev, 0);
1205 if (IS_ERR(ctx->regs))
1206 return PTR_ERR(ctx->regs);
1207
1208 ret = platform_get_irq_byname(pdev, ctx->i80_if ? "lcd_sys" : "vsync");
1209 if (ret < 0)
1210 return ret;
1211
1212 ret = devm_request_irq(dev, ret, fimd_irq_handler, 0, "drm_fimd", ctx);
1213 if (ret) {
1214 dev_err(dev, "irq request failed.\n");
1215 return ret;
1216 }
1217
1218 init_waitqueue_head(&ctx->wait_vsync_queue);
1219 atomic_set(&ctx->wait_vsync_event, 0);
1220
1221 platform_set_drvdata(pdev, ctx);
1222
1223 ctx->encoder = exynos_dpi_probe(dev);
1224 if (IS_ERR(ctx->encoder))
1225 return PTR_ERR(ctx->encoder);
1226
1227 pm_runtime_enable(dev);
1228
1229 ret = component_add(dev, &fimd_component_ops);
1230 if (ret)
1231 goto err_disable_pm_runtime;
1232
1233 return ret;
1234
1235err_disable_pm_runtime:
1236 pm_runtime_disable(dev);
1237
1238 return ret;
1239}
1240
1241static int fimd_remove(struct platform_device *pdev)
1242{
1243 pm_runtime_disable(&pdev->dev);
1244
1245 component_del(&pdev->dev, &fimd_component_ops);
1246
1247 return 0;
1248}
1249
1250#ifdef CONFIG_PM
1251static int exynos_fimd_suspend(struct device *dev)
1252{
1253 struct fimd_context *ctx = dev_get_drvdata(dev);
1254
1255 clk_disable_unprepare(ctx->lcd_clk);
1256 clk_disable_unprepare(ctx->bus_clk);
1257
1258 return 0;
1259}
1260
1261static int exynos_fimd_resume(struct device *dev)
1262{
1263 struct fimd_context *ctx = dev_get_drvdata(dev);
1264 int ret;
1265
1266 ret = clk_prepare_enable(ctx->bus_clk);
1267 if (ret < 0) {
1268 DRM_DEV_ERROR(dev,
1269 "Failed to prepare_enable the bus clk [%d]\n",
1270 ret);
1271 return ret;
1272 }
1273
1274 ret = clk_prepare_enable(ctx->lcd_clk);
1275 if (ret < 0) {
1276 DRM_DEV_ERROR(dev,
1277 "Failed to prepare_enable the lcd clk [%d]\n",
1278 ret);
1279 return ret;
1280 }
1281
1282 return 0;
1283}
1284#endif
1285
1286static const struct dev_pm_ops exynos_fimd_pm_ops = {
1287 SET_RUNTIME_PM_OPS(exynos_fimd_suspend, exynos_fimd_resume, NULL)
1288 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
1289 pm_runtime_force_resume)
1290};
1291
1292struct platform_driver fimd_driver = {
1293 .probe = fimd_probe,
1294 .remove = fimd_remove,
1295 .driver = {
1296 .name = "exynos4-fb",
1297 .owner = THIS_MODULE,
1298 .pm = &exynos_fimd_pm_ops,
1299 .of_match_table = fimd_driver_dt_match,
1300 },
1301};
1302
