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1/* drivers/gpu/drm/exynos5433_drm_decon.c
2 *
3 * Copyright (C) 2015 Samsung Electronics Co.Ltd
4 * Authors:
5 * Joonyoung Shim <jy0922.shim@samsung.com>
6 * Hyungwon Hwang <human.hwang@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundationr
11 */
12
13#include <linux/platform_device.h>
14#include <linux/clk.h>
15#include <linux/component.h>
16#include <linux/of_device.h>
17#include <linux/of_gpio.h>
18#include <linux/pm_runtime.h>
19
20#include <video/exynos5433_decon.h>
21
22#include "exynos_drm_drv.h"
23#include "exynos_drm_crtc.h"
24#include "exynos_drm_fb.h"
25#include "exynos_drm_plane.h"
26#include "exynos_drm_iommu.h"
27
28#define WINDOWS_NR 3
29#define MIN_FB_WIDTH_FOR_16WORD_BURST 128
30
31static const char * const decon_clks_name[] = {
32 "pclk",
33 "aclk_decon",
34 "aclk_smmu_decon0x",
35 "aclk_xiu_decon0x",
36 "pclk_smmu_decon0x",
37 "sclk_decon_vclk",
38 "sclk_decon_eclk",
39};
40
41enum decon_iftype {
42 IFTYPE_RGB,
43 IFTYPE_I80,
44 IFTYPE_HDMI
45};
46
47enum decon_flag_bits {
48 BIT_CLKS_ENABLED,
49 BIT_IRQS_ENABLED,
50 BIT_WIN_UPDATED,
51 BIT_SUSPENDED
52};
53
54struct decon_context {
55 struct device *dev;
56 struct drm_device *drm_dev;
57 struct exynos_drm_crtc *crtc;
58 struct exynos_drm_plane planes[WINDOWS_NR];
59 struct exynos_drm_plane_config configs[WINDOWS_NR];
60 void __iomem *addr;
61 struct clk *clks[ARRAY_SIZE(decon_clks_name)];
62 int pipe;
63 unsigned long flags;
64 enum decon_iftype out_type;
65 int first_win;
66};
67
68static const uint32_t decon_formats[] = {
69 DRM_FORMAT_XRGB1555,
70 DRM_FORMAT_RGB565,
71 DRM_FORMAT_XRGB8888,
72 DRM_FORMAT_ARGB8888,
73};
74
75static const enum drm_plane_type decon_win_types[WINDOWS_NR] = {
76 DRM_PLANE_TYPE_PRIMARY,
77 DRM_PLANE_TYPE_OVERLAY,
78 DRM_PLANE_TYPE_CURSOR,
79};
80
81static inline void decon_set_bits(struct decon_context *ctx, u32 reg, u32 mask,
82 u32 val)
83{
84 val = (val & mask) | (readl(ctx->addr + reg) & ~mask);
85 writel(val, ctx->addr + reg);
86}
87
88static int decon_enable_vblank(struct exynos_drm_crtc *crtc)
89{
90 struct decon_context *ctx = crtc->ctx;
91 u32 val;
92
93 if (test_bit(BIT_SUSPENDED, &ctx->flags))
94 return -EPERM;
95
96 if (!test_and_set_bit(BIT_IRQS_ENABLED, &ctx->flags)) {
97 val = VIDINTCON0_INTEN;
98 if (ctx->out_type == IFTYPE_I80)
99 val |= VIDINTCON0_FRAMEDONE;
100 else
101 val |= VIDINTCON0_INTFRMEN;
102
103 writel(val, ctx->addr + DECON_VIDINTCON0);
104 }
105
106 return 0;
107}
108
109static void decon_disable_vblank(struct exynos_drm_crtc *crtc)
110{
111 struct decon_context *ctx = crtc->ctx;
112
113 if (test_bit(BIT_SUSPENDED, &ctx->flags))
114 return;
115
116 if (test_and_clear_bit(BIT_IRQS_ENABLED, &ctx->flags))
117 writel(0, ctx->addr + DECON_VIDINTCON0);
118}
119
120static void decon_setup_trigger(struct decon_context *ctx)
121{
122 u32 val = (ctx->out_type != IFTYPE_HDMI)
123 ? TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
124 TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN
125 : TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
126 TRIGCON_HWTRIGMASK_I80_RGB | TRIGCON_HWTRIGEN_I80_RGB;
127 writel(val, ctx->addr + DECON_TRIGCON);
128}
129
130static void decon_commit(struct exynos_drm_crtc *crtc)
131{
132 struct decon_context *ctx = crtc->ctx;
133 struct drm_display_mode *m = &crtc->base.mode;
134 u32 val;
135
136 if (test_bit(BIT_SUSPENDED, &ctx->flags))
137 return;
138
139 if (ctx->out_type == IFTYPE_HDMI) {
140 m->crtc_hsync_start = m->crtc_hdisplay + 10;
141 m->crtc_hsync_end = m->crtc_htotal - 92;
142 m->crtc_vsync_start = m->crtc_vdisplay + 1;
143 m->crtc_vsync_end = m->crtc_vsync_start + 1;
144 }
145
146 decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID, 0);
147
148 /* enable clock gate */
149 val = CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F;
150 writel(val, ctx->addr + DECON_CMU);
151
152 /* lcd on and use command if */
153 val = VIDOUT_LCD_ON;
154 if (ctx->out_type == IFTYPE_I80)
155 val |= VIDOUT_COMMAND_IF;
156 else
157 val |= VIDOUT_RGB_IF;
158 writel(val, ctx->addr + DECON_VIDOUTCON0);
159
160 val = VIDTCON2_LINEVAL(m->vdisplay - 1) |
161 VIDTCON2_HOZVAL(m->hdisplay - 1);
162 writel(val, ctx->addr + DECON_VIDTCON2);
163
164 if (ctx->out_type != IFTYPE_I80) {
165 val = VIDTCON00_VBPD_F(
166 m->crtc_vtotal - m->crtc_vsync_end - 1) |
167 VIDTCON00_VFPD_F(
168 m->crtc_vsync_start - m->crtc_vdisplay - 1);
169 writel(val, ctx->addr + DECON_VIDTCON00);
170
171 val = VIDTCON01_VSPW_F(
172 m->crtc_vsync_end - m->crtc_vsync_start - 1);
173 writel(val, ctx->addr + DECON_VIDTCON01);
174
175 val = VIDTCON10_HBPD_F(
176 m->crtc_htotal - m->crtc_hsync_end - 1) |
177 VIDTCON10_HFPD_F(
178 m->crtc_hsync_start - m->crtc_hdisplay - 1);
179 writel(val, ctx->addr + DECON_VIDTCON10);
180
181 val = VIDTCON11_HSPW_F(
182 m->crtc_hsync_end - m->crtc_hsync_start - 1);
183 writel(val, ctx->addr + DECON_VIDTCON11);
184 }
185
186 decon_setup_trigger(ctx);
187
188 /* enable output and display signal */
189 decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID | VIDCON0_ENVID_F, ~0);
190}
191
192static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win,
193 struct drm_framebuffer *fb)
194{
195 unsigned long val;
196
197 val = readl(ctx->addr + DECON_WINCONx(win));
198 val &= ~WINCONx_BPPMODE_MASK;
199
200 switch (fb->pixel_format) {
201 case DRM_FORMAT_XRGB1555:
202 val |= WINCONx_BPPMODE_16BPP_I1555;
203 val |= WINCONx_HAWSWP_F;
204 val |= WINCONx_BURSTLEN_16WORD;
205 break;
206 case DRM_FORMAT_RGB565:
207 val |= WINCONx_BPPMODE_16BPP_565;
208 val |= WINCONx_HAWSWP_F;
209 val |= WINCONx_BURSTLEN_16WORD;
210 break;
211 case DRM_FORMAT_XRGB8888:
212 val |= WINCONx_BPPMODE_24BPP_888;
213 val |= WINCONx_WSWP_F;
214 val |= WINCONx_BURSTLEN_16WORD;
215 break;
216 case DRM_FORMAT_ARGB8888:
217 val |= WINCONx_BPPMODE_32BPP_A8888;
218 val |= WINCONx_WSWP_F | WINCONx_BLD_PIX_F | WINCONx_ALPHA_SEL_F;
219 val |= WINCONx_BURSTLEN_16WORD;
220 break;
221 default:
222 DRM_ERROR("Proper pixel format is not set\n");
223 return;
224 }
225
226 DRM_DEBUG_KMS("bpp = %u\n", fb->bits_per_pixel);
227
228 /*
229 * In case of exynos, setting dma-burst to 16Word causes permanent
230 * tearing for very small buffers, e.g. cursor buffer. Burst Mode
231 * switching which is based on plane size is not recommended as
232 * plane size varies a lot towards the end of the screen and rapid
233 * movement causes unstable DMA which results into iommu crash/tear.
234 */
235
236 if (fb->width < MIN_FB_WIDTH_FOR_16WORD_BURST) {
237 val &= ~WINCONx_BURSTLEN_MASK;
238 val |= WINCONx_BURSTLEN_8WORD;
239 }
240
241 writel(val, ctx->addr + DECON_WINCONx(win));
242}
243
244static void decon_shadow_protect_win(struct decon_context *ctx, int win,
245 bool protect)
246{
247 decon_set_bits(ctx, DECON_SHADOWCON, SHADOWCON_Wx_PROTECT(win),
248 protect ? ~0 : 0);
249}
250
251static void decon_atomic_begin(struct exynos_drm_crtc *crtc)
252{
253 struct decon_context *ctx = crtc->ctx;
254 int i;
255
256 if (test_bit(BIT_SUSPENDED, &ctx->flags))
257 return;
258
259 for (i = ctx->first_win; i < WINDOWS_NR; i++)
260 decon_shadow_protect_win(ctx, i, true);
261}
262
263#define BIT_VAL(x, e, s) (((x) & ((1 << ((e) - (s) + 1)) - 1)) << (s))
264#define COORDINATE_X(x) BIT_VAL((x), 23, 12)
265#define COORDINATE_Y(x) BIT_VAL((x), 11, 0)
266
267static void decon_update_plane(struct exynos_drm_crtc *crtc,
268 struct exynos_drm_plane *plane)
269{
270 struct exynos_drm_plane_state *state =
271 to_exynos_plane_state(plane->base.state);
272 struct decon_context *ctx = crtc->ctx;
273 struct drm_framebuffer *fb = state->base.fb;
274 unsigned int win = plane->index;
275 unsigned int bpp = fb->bits_per_pixel >> 3;
276 unsigned int pitch = fb->pitches[0];
277 dma_addr_t dma_addr = exynos_drm_fb_dma_addr(fb, 0);
278 u32 val;
279
280 if (test_bit(BIT_SUSPENDED, &ctx->flags))
281 return;
282
283 val = COORDINATE_X(state->crtc.x) | COORDINATE_Y(state->crtc.y);
284 writel(val, ctx->addr + DECON_VIDOSDxA(win));
285
286 val = COORDINATE_X(state->crtc.x + state->crtc.w - 1) |
287 COORDINATE_Y(state->crtc.y + state->crtc.h - 1);
288 writel(val, ctx->addr + DECON_VIDOSDxB(win));
289
290 val = VIDOSD_Wx_ALPHA_R_F(0x0) | VIDOSD_Wx_ALPHA_G_F(0x0) |
291 VIDOSD_Wx_ALPHA_B_F(0x0);
292 writel(val, ctx->addr + DECON_VIDOSDxC(win));
293
294 val = VIDOSD_Wx_ALPHA_R_F(0x0) | VIDOSD_Wx_ALPHA_G_F(0x0) |
295 VIDOSD_Wx_ALPHA_B_F(0x0);
296 writel(val, ctx->addr + DECON_VIDOSDxD(win));
297
298 writel(dma_addr, ctx->addr + DECON_VIDW0xADD0B0(win));
299
300 val = dma_addr + pitch * state->src.h;
301 writel(val, ctx->addr + DECON_VIDW0xADD1B0(win));
302
303 if (ctx->out_type != IFTYPE_HDMI)
304 val = BIT_VAL(pitch - state->crtc.w * bpp, 27, 14)
305 | BIT_VAL(state->crtc.w * bpp, 13, 0);
306 else
307 val = BIT_VAL(pitch - state->crtc.w * bpp, 29, 15)
308 | BIT_VAL(state->crtc.w * bpp, 14, 0);
309 writel(val, ctx->addr + DECON_VIDW0xADD2(win));
310
311 decon_win_set_pixfmt(ctx, win, fb);
312
313 /* window enable */
314 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, ~0);
315
316 /* standalone update */
317 decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
318}
319
320static void decon_disable_plane(struct exynos_drm_crtc *crtc,
321 struct exynos_drm_plane *plane)
322{
323 struct decon_context *ctx = crtc->ctx;
324 unsigned int win = plane->index;
325
326 if (test_bit(BIT_SUSPENDED, &ctx->flags))
327 return;
328
329 decon_shadow_protect_win(ctx, win, true);
330
331 /* window disable */
332 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
333
334 decon_shadow_protect_win(ctx, win, false);
335
336 /* standalone update */
337 decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
338}
339
340static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
341{
342 struct decon_context *ctx = crtc->ctx;
343 int i;
344
345 if (test_bit(BIT_SUSPENDED, &ctx->flags))
346 return;
347
348 for (i = ctx->first_win; i < WINDOWS_NR; i++)
349 decon_shadow_protect_win(ctx, i, false);
350
351 if (ctx->out_type == IFTYPE_I80)
352 set_bit(BIT_WIN_UPDATED, &ctx->flags);
353}
354
355static void decon_swreset(struct decon_context *ctx)
356{
357 unsigned int tries;
358
359 writel(0, ctx->addr + DECON_VIDCON0);
360 for (tries = 2000; tries; --tries) {
361 if (~readl(ctx->addr + DECON_VIDCON0) & VIDCON0_STOP_STATUS)
362 break;
363 udelay(10);
364 }
365
366 WARN(tries == 0, "failed to disable DECON\n");
367
368 writel(VIDCON0_SWRESET, ctx->addr + DECON_VIDCON0);
369 for (tries = 2000; tries; --tries) {
370 if (~readl(ctx->addr + DECON_VIDCON0) & VIDCON0_SWRESET)
371 break;
372 udelay(10);
373 }
374
375 WARN(tries == 0, "failed to software reset DECON\n");
376
377 if (ctx->out_type != IFTYPE_HDMI)
378 return;
379
380 writel(VIDCON0_CLKVALUP | VIDCON0_VLCKFREE, ctx->addr + DECON_VIDCON0);
381 decon_set_bits(ctx, DECON_CMU,
382 CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F, ~0);
383 writel(VIDCON1_VCLK_RUN_VDEN_DISABLE, ctx->addr + DECON_VIDCON1);
384 writel(CRCCTRL_CRCEN | CRCCTRL_CRCSTART_F | CRCCTRL_CRCCLKEN,
385 ctx->addr + DECON_CRCCTRL);
386 decon_setup_trigger(ctx);
387}
388
389static void decon_enable(struct exynos_drm_crtc *crtc)
390{
391 struct decon_context *ctx = crtc->ctx;
392
393 if (!test_and_clear_bit(BIT_SUSPENDED, &ctx->flags))
394 return;
395
396 pm_runtime_get_sync(ctx->dev);
397
398 set_bit(BIT_CLKS_ENABLED, &ctx->flags);
399
400 /* if vblank was enabled status, enable it again. */
401 if (test_and_clear_bit(BIT_IRQS_ENABLED, &ctx->flags))
402 decon_enable_vblank(ctx->crtc);
403
404 decon_commit(ctx->crtc);
405}
406
407static void decon_disable(struct exynos_drm_crtc *crtc)
408{
409 struct decon_context *ctx = crtc->ctx;
410 int i;
411
412 if (test_bit(BIT_SUSPENDED, &ctx->flags))
413 return;
414
415 /*
416 * We need to make sure that all windows are disabled before we
417 * suspend that connector. Otherwise we might try to scan from
418 * a destroyed buffer later.
419 */
420 for (i = ctx->first_win; i < WINDOWS_NR; i++)
421 decon_disable_plane(crtc, &ctx->planes[i]);
422
423 decon_swreset(ctx);
424
425 clear_bit(BIT_CLKS_ENABLED, &ctx->flags);
426
427 pm_runtime_put_sync(ctx->dev);
428
429 set_bit(BIT_SUSPENDED, &ctx->flags);
430}
431
432static void decon_te_irq_handler(struct exynos_drm_crtc *crtc)
433{
434 struct decon_context *ctx = crtc->ctx;
435
436 if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags))
437 return;
438
439 if (test_and_clear_bit(BIT_WIN_UPDATED, &ctx->flags))
440 decon_set_bits(ctx, DECON_TRIGCON, TRIGCON_SWTRIGCMD, ~0);
441
442 drm_crtc_handle_vblank(&ctx->crtc->base);
443}
444
445static void decon_clear_channels(struct exynos_drm_crtc *crtc)
446{
447 struct decon_context *ctx = crtc->ctx;
448 int win, i, ret;
449
450 DRM_DEBUG_KMS("%s\n", __FILE__);
451
452 for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
453 ret = clk_prepare_enable(ctx->clks[i]);
454 if (ret < 0)
455 goto err;
456 }
457
458 for (win = 0; win < WINDOWS_NR; win++) {
459 decon_shadow_protect_win(ctx, win, true);
460 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
461 decon_shadow_protect_win(ctx, win, false);
462 decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
463 }
464 /* TODO: wait for possible vsync */
465 msleep(50);
466
467err:
468 while (--i >= 0)
469 clk_disable_unprepare(ctx->clks[i]);
470}
471
472static struct exynos_drm_crtc_ops decon_crtc_ops = {
473 .enable = decon_enable,
474 .disable = decon_disable,
475 .enable_vblank = decon_enable_vblank,
476 .disable_vblank = decon_disable_vblank,
477 .atomic_begin = decon_atomic_begin,
478 .update_plane = decon_update_plane,
479 .disable_plane = decon_disable_plane,
480 .atomic_flush = decon_atomic_flush,
481 .te_handler = decon_te_irq_handler,
482};
483
484static int decon_bind(struct device *dev, struct device *master, void *data)
485{
486 struct decon_context *ctx = dev_get_drvdata(dev);
487 struct drm_device *drm_dev = data;
488 struct exynos_drm_private *priv = drm_dev->dev_private;
489 struct exynos_drm_plane *exynos_plane;
490 enum exynos_drm_output_type out_type;
491 unsigned int win;
492 int ret;
493
494 ctx->drm_dev = drm_dev;
495 ctx->pipe = priv->pipe++;
496
497 for (win = ctx->first_win; win < WINDOWS_NR; win++) {
498 int tmp = (win == ctx->first_win) ? 0 : win;
499
500 ctx->configs[win].pixel_formats = decon_formats;
501 ctx->configs[win].num_pixel_formats = ARRAY_SIZE(decon_formats);
502 ctx->configs[win].zpos = win;
503 ctx->configs[win].type = decon_win_types[tmp];
504
505 ret = exynos_plane_init(drm_dev, &ctx->planes[win], win,
506 1 << ctx->pipe, &ctx->configs[win]);
507 if (ret)
508 return ret;
509 }
510
511 exynos_plane = &ctx->planes[ctx->first_win];
512 out_type = (ctx->out_type == IFTYPE_HDMI) ? EXYNOS_DISPLAY_TYPE_HDMI
513 : EXYNOS_DISPLAY_TYPE_LCD;
514 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
515 ctx->pipe, out_type,
516 &decon_crtc_ops, ctx);
517 if (IS_ERR(ctx->crtc)) {
518 ret = PTR_ERR(ctx->crtc);
519 goto err;
520 }
521
522 decon_clear_channels(ctx->crtc);
523
524 ret = drm_iommu_attach_device(drm_dev, dev);
525 if (ret)
526 goto err;
527
528 return ret;
529err:
530 priv->pipe--;
531 return ret;
532}
533
534static void decon_unbind(struct device *dev, struct device *master, void *data)
535{
536 struct decon_context *ctx = dev_get_drvdata(dev);
537
538 decon_disable(ctx->crtc);
539
540 /* detach this sub driver from iommu mapping if supported. */
541 drm_iommu_detach_device(ctx->drm_dev, ctx->dev);
542}
543
544static const struct component_ops decon_component_ops = {
545 .bind = decon_bind,
546 .unbind = decon_unbind,
547};
548
549static irqreturn_t decon_irq_handler(int irq, void *dev_id)
550{
551 struct decon_context *ctx = dev_id;
552 u32 val;
553 int win;
554
555 if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags))
556 goto out;
557
558 val = readl(ctx->addr + DECON_VIDINTCON1);
559 val &= VIDINTCON1_INTFRMDONEPEND | VIDINTCON1_INTFRMPEND;
560
561 if (val) {
562 for (win = ctx->first_win; win < WINDOWS_NR ; win++) {
563 struct exynos_drm_plane *plane = &ctx->planes[win];
564
565 if (!plane->pending_fb)
566 continue;
567
568 exynos_drm_crtc_finish_update(ctx->crtc, plane);
569 }
570
571 /* clear */
572 writel(val, ctx->addr + DECON_VIDINTCON1);
573 }
574
575out:
576 return IRQ_HANDLED;
577}
578
579#ifdef CONFIG_PM
580static int exynos5433_decon_suspend(struct device *dev)
581{
582 struct decon_context *ctx = dev_get_drvdata(dev);
583 int i = ARRAY_SIZE(decon_clks_name);
584
585 while (--i >= 0)
586 clk_disable_unprepare(ctx->clks[i]);
587
588 return 0;
589}
590
591static int exynos5433_decon_resume(struct device *dev)
592{
593 struct decon_context *ctx = dev_get_drvdata(dev);
594 int i, ret;
595
596 for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
597 ret = clk_prepare_enable(ctx->clks[i]);
598 if (ret < 0)
599 goto err;
600 }
601
602 return 0;
603
604err:
605 while (--i >= 0)
606 clk_disable_unprepare(ctx->clks[i]);
607
608 return ret;
609}
610#endif
611
612static const struct dev_pm_ops exynos5433_decon_pm_ops = {
613 SET_RUNTIME_PM_OPS(exynos5433_decon_suspend, exynos5433_decon_resume,
614 NULL)
615};
616
617static const struct of_device_id exynos5433_decon_driver_dt_match[] = {
618 {
619 .compatible = "samsung,exynos5433-decon",
620 .data = (void *)IFTYPE_RGB
621 },
622 {
623 .compatible = "samsung,exynos5433-decon-tv",
624 .data = (void *)IFTYPE_HDMI
625 },
626 {},
627};
628MODULE_DEVICE_TABLE(of, exynos5433_decon_driver_dt_match);
629
630static int exynos5433_decon_probe(struct platform_device *pdev)
631{
632 const struct of_device_id *of_id;
633 struct device *dev = &pdev->dev;
634 struct decon_context *ctx;
635 struct resource *res;
636 int ret;
637 int i;
638
639 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
640 if (!ctx)
641 return -ENOMEM;
642
643 __set_bit(BIT_SUSPENDED, &ctx->flags);
644 ctx->dev = dev;
645
646 of_id = of_match_device(exynos5433_decon_driver_dt_match, &pdev->dev);
647 ctx->out_type = (enum decon_iftype)of_id->data;
648
649 if (ctx->out_type == IFTYPE_HDMI)
650 ctx->first_win = 1;
651 else if (of_get_child_by_name(dev->of_node, "i80-if-timings"))
652 ctx->out_type = IFTYPE_I80;
653
654 for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
655 struct clk *clk;
656
657 clk = devm_clk_get(ctx->dev, decon_clks_name[i]);
658 if (IS_ERR(clk))
659 return PTR_ERR(clk);
660
661 ctx->clks[i] = clk;
662 }
663
664 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
665 if (!res) {
666 dev_err(dev, "cannot find IO resource\n");
667 return -ENXIO;
668 }
669
670 ctx->addr = devm_ioremap_resource(dev, res);
671 if (IS_ERR(ctx->addr)) {
672 dev_err(dev, "ioremap failed\n");
673 return PTR_ERR(ctx->addr);
674 }
675
676 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
677 (ctx->out_type == IFTYPE_I80) ? "lcd_sys" : "vsync");
678 if (!res) {
679 dev_err(dev, "cannot find IRQ resource\n");
680 return -ENXIO;
681 }
682
683 ret = devm_request_irq(dev, res->start, decon_irq_handler, 0,
684 "drm_decon", ctx);
685 if (ret < 0) {
686 dev_err(dev, "lcd_sys irq request failed\n");
687 return ret;
688 }
689
690 platform_set_drvdata(pdev, ctx);
691
692 pm_runtime_enable(dev);
693
694 ret = component_add(dev, &decon_component_ops);
695 if (ret)
696 goto err_disable_pm_runtime;
697
698 return 0;
699
700err_disable_pm_runtime:
701 pm_runtime_disable(dev);
702
703 return ret;
704}
705
706static int exynos5433_decon_remove(struct platform_device *pdev)
707{
708 pm_runtime_disable(&pdev->dev);
709
710 component_del(&pdev->dev, &decon_component_ops);
711
712 return 0;
713}
714
715struct platform_driver exynos5433_decon_driver = {
716 .probe = exynos5433_decon_probe,
717 .remove = exynos5433_decon_remove,
718 .driver = {
719 .name = "exynos5433-decon",
720 .pm = &exynos5433_decon_pm_ops,
721 .of_match_table = exynos5433_decon_driver_dt_match,
722 },
723};
1/* drivers/gpu/drm/exynos5433_drm_decon.c
2 *
3 * Copyright (C) 2015 Samsung Electronics Co.Ltd
4 * Authors:
5 * Joonyoung Shim <jy0922.shim@samsung.com>
6 * Hyungwon Hwang <human.hwang@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundationr
11 */
12
13#include <linux/platform_device.h>
14#include <linux/clk.h>
15#include <linux/component.h>
16#include <linux/of_device.h>
17#include <linux/of_gpio.h>
18#include <linux/pm_runtime.h>
19
20#include <video/exynos5433_decon.h>
21
22#include "exynos_drm_drv.h"
23#include "exynos_drm_crtc.h"
24#include "exynos_drm_fb.h"
25#include "exynos_drm_plane.h"
26#include "exynos_drm_iommu.h"
27
28#define WINDOWS_NR 3
29#define MIN_FB_WIDTH_FOR_16WORD_BURST 128
30
31#define IFTYPE_I80 (1 << 0)
32#define I80_HW_TRG (1 << 1)
33#define IFTYPE_HDMI (1 << 2)
34
35static const char * const decon_clks_name[] = {
36 "pclk",
37 "aclk_decon",
38 "aclk_smmu_decon0x",
39 "aclk_xiu_decon0x",
40 "pclk_smmu_decon0x",
41 "sclk_decon_vclk",
42 "sclk_decon_eclk",
43};
44
45enum decon_flag_bits {
46 BIT_CLKS_ENABLED,
47 BIT_IRQS_ENABLED,
48 BIT_WIN_UPDATED,
49 BIT_SUSPENDED,
50 BIT_REQUEST_UPDATE
51};
52
53struct decon_context {
54 struct device *dev;
55 struct drm_device *drm_dev;
56 struct exynos_drm_crtc *crtc;
57 struct exynos_drm_plane planes[WINDOWS_NR];
58 struct exynos_drm_plane_config configs[WINDOWS_NR];
59 void __iomem *addr;
60 struct clk *clks[ARRAY_SIZE(decon_clks_name)];
61 int pipe;
62 unsigned long flags;
63 unsigned long out_type;
64 int first_win;
65};
66
67static const uint32_t decon_formats[] = {
68 DRM_FORMAT_XRGB1555,
69 DRM_FORMAT_RGB565,
70 DRM_FORMAT_XRGB8888,
71 DRM_FORMAT_ARGB8888,
72};
73
74static const enum drm_plane_type decon_win_types[WINDOWS_NR] = {
75 DRM_PLANE_TYPE_PRIMARY,
76 DRM_PLANE_TYPE_OVERLAY,
77 DRM_PLANE_TYPE_CURSOR,
78};
79
80static inline void decon_set_bits(struct decon_context *ctx, u32 reg, u32 mask,
81 u32 val)
82{
83 val = (val & mask) | (readl(ctx->addr + reg) & ~mask);
84 writel(val, ctx->addr + reg);
85}
86
87static int decon_enable_vblank(struct exynos_drm_crtc *crtc)
88{
89 struct decon_context *ctx = crtc->ctx;
90 u32 val;
91
92 if (test_bit(BIT_SUSPENDED, &ctx->flags))
93 return -EPERM;
94
95 if (!test_and_set_bit(BIT_IRQS_ENABLED, &ctx->flags)) {
96 val = VIDINTCON0_INTEN;
97 if (ctx->out_type & IFTYPE_I80)
98 val |= VIDINTCON0_FRAMEDONE;
99 else
100 val |= VIDINTCON0_INTFRMEN;
101
102 writel(val, ctx->addr + DECON_VIDINTCON0);
103 }
104
105 return 0;
106}
107
108static void decon_disable_vblank(struct exynos_drm_crtc *crtc)
109{
110 struct decon_context *ctx = crtc->ctx;
111
112 if (test_bit(BIT_SUSPENDED, &ctx->flags))
113 return;
114
115 if (test_and_clear_bit(BIT_IRQS_ENABLED, &ctx->flags))
116 writel(0, ctx->addr + DECON_VIDINTCON0);
117}
118
119static void decon_setup_trigger(struct decon_context *ctx)
120{
121 u32 val = !(ctx->out_type & I80_HW_TRG)
122 ? TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
123 TRIGCON_TE_AUTO_MASK | TRIGCON_SWTRIGEN
124 : TRIGCON_TRIGEN_PER_F | TRIGCON_TRIGEN_F |
125 TRIGCON_HWTRIGMASK | TRIGCON_HWTRIGEN;
126 writel(val, ctx->addr + DECON_TRIGCON);
127}
128
129static void decon_commit(struct exynos_drm_crtc *crtc)
130{
131 struct decon_context *ctx = crtc->ctx;
132 struct drm_display_mode *m = &crtc->base.mode;
133 u32 val;
134
135 if (test_bit(BIT_SUSPENDED, &ctx->flags))
136 return;
137
138 if (ctx->out_type & IFTYPE_HDMI) {
139 m->crtc_hsync_start = m->crtc_hdisplay + 10;
140 m->crtc_hsync_end = m->crtc_htotal - 92;
141 m->crtc_vsync_start = m->crtc_vdisplay + 1;
142 m->crtc_vsync_end = m->crtc_vsync_start + 1;
143 }
144
145 if (ctx->out_type & (IFTYPE_I80 | I80_HW_TRG))
146 decon_setup_trigger(ctx);
147
148 /* lcd on and use command if */
149 val = VIDOUT_LCD_ON;
150 if (ctx->out_type & IFTYPE_I80) {
151 val |= VIDOUT_COMMAND_IF;
152 } else {
153 val |= VIDOUT_RGB_IF;
154 }
155
156 writel(val, ctx->addr + DECON_VIDOUTCON0);
157
158 val = VIDTCON2_LINEVAL(m->vdisplay - 1) |
159 VIDTCON2_HOZVAL(m->hdisplay - 1);
160 writel(val, ctx->addr + DECON_VIDTCON2);
161
162 if (!(ctx->out_type & IFTYPE_I80)) {
163 val = VIDTCON00_VBPD_F(
164 m->crtc_vtotal - m->crtc_vsync_end - 1) |
165 VIDTCON00_VFPD_F(
166 m->crtc_vsync_start - m->crtc_vdisplay - 1);
167 writel(val, ctx->addr + DECON_VIDTCON00);
168
169 val = VIDTCON01_VSPW_F(
170 m->crtc_vsync_end - m->crtc_vsync_start - 1);
171 writel(val, ctx->addr + DECON_VIDTCON01);
172
173 val = VIDTCON10_HBPD_F(
174 m->crtc_htotal - m->crtc_hsync_end - 1) |
175 VIDTCON10_HFPD_F(
176 m->crtc_hsync_start - m->crtc_hdisplay - 1);
177 writel(val, ctx->addr + DECON_VIDTCON10);
178
179 val = VIDTCON11_HSPW_F(
180 m->crtc_hsync_end - m->crtc_hsync_start - 1);
181 writel(val, ctx->addr + DECON_VIDTCON11);
182 }
183
184 /* enable output and display signal */
185 decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID | VIDCON0_ENVID_F, ~0);
186
187 decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
188}
189
190static void decon_win_set_pixfmt(struct decon_context *ctx, unsigned int win,
191 struct drm_framebuffer *fb)
192{
193 unsigned long val;
194
195 val = readl(ctx->addr + DECON_WINCONx(win));
196 val &= ~WINCONx_BPPMODE_MASK;
197
198 switch (fb->pixel_format) {
199 case DRM_FORMAT_XRGB1555:
200 val |= WINCONx_BPPMODE_16BPP_I1555;
201 val |= WINCONx_HAWSWP_F;
202 val |= WINCONx_BURSTLEN_16WORD;
203 break;
204 case DRM_FORMAT_RGB565:
205 val |= WINCONx_BPPMODE_16BPP_565;
206 val |= WINCONx_HAWSWP_F;
207 val |= WINCONx_BURSTLEN_16WORD;
208 break;
209 case DRM_FORMAT_XRGB8888:
210 val |= WINCONx_BPPMODE_24BPP_888;
211 val |= WINCONx_WSWP_F;
212 val |= WINCONx_BURSTLEN_16WORD;
213 break;
214 case DRM_FORMAT_ARGB8888:
215 val |= WINCONx_BPPMODE_32BPP_A8888;
216 val |= WINCONx_WSWP_F | WINCONx_BLD_PIX_F | WINCONx_ALPHA_SEL_F;
217 val |= WINCONx_BURSTLEN_16WORD;
218 break;
219 default:
220 DRM_ERROR("Proper pixel format is not set\n");
221 return;
222 }
223
224 DRM_DEBUG_KMS("bpp = %u\n", fb->bits_per_pixel);
225
226 /*
227 * In case of exynos, setting dma-burst to 16Word causes permanent
228 * tearing for very small buffers, e.g. cursor buffer. Burst Mode
229 * switching which is based on plane size is not recommended as
230 * plane size varies a lot towards the end of the screen and rapid
231 * movement causes unstable DMA which results into iommu crash/tear.
232 */
233
234 if (fb->width < MIN_FB_WIDTH_FOR_16WORD_BURST) {
235 val &= ~WINCONx_BURSTLEN_MASK;
236 val |= WINCONx_BURSTLEN_8WORD;
237 }
238
239 writel(val, ctx->addr + DECON_WINCONx(win));
240}
241
242static void decon_shadow_protect_win(struct decon_context *ctx, int win,
243 bool protect)
244{
245 decon_set_bits(ctx, DECON_SHADOWCON, SHADOWCON_Wx_PROTECT(win),
246 protect ? ~0 : 0);
247}
248
249static void decon_atomic_begin(struct exynos_drm_crtc *crtc)
250{
251 struct decon_context *ctx = crtc->ctx;
252 int i;
253
254 if (test_bit(BIT_SUSPENDED, &ctx->flags))
255 return;
256
257 for (i = ctx->first_win; i < WINDOWS_NR; i++)
258 decon_shadow_protect_win(ctx, i, true);
259}
260
261#define BIT_VAL(x, e, s) (((x) & ((1 << ((e) - (s) + 1)) - 1)) << (s))
262#define COORDINATE_X(x) BIT_VAL((x), 23, 12)
263#define COORDINATE_Y(x) BIT_VAL((x), 11, 0)
264
265static void decon_update_plane(struct exynos_drm_crtc *crtc,
266 struct exynos_drm_plane *plane)
267{
268 struct exynos_drm_plane_state *state =
269 to_exynos_plane_state(plane->base.state);
270 struct decon_context *ctx = crtc->ctx;
271 struct drm_framebuffer *fb = state->base.fb;
272 unsigned int win = plane->index;
273 unsigned int bpp = fb->bits_per_pixel >> 3;
274 unsigned int pitch = fb->pitches[0];
275 dma_addr_t dma_addr = exynos_drm_fb_dma_addr(fb, 0);
276 u32 val;
277
278 if (test_bit(BIT_SUSPENDED, &ctx->flags))
279 return;
280
281 val = COORDINATE_X(state->crtc.x) | COORDINATE_Y(state->crtc.y);
282 writel(val, ctx->addr + DECON_VIDOSDxA(win));
283
284 val = COORDINATE_X(state->crtc.x + state->crtc.w - 1) |
285 COORDINATE_Y(state->crtc.y + state->crtc.h - 1);
286 writel(val, ctx->addr + DECON_VIDOSDxB(win));
287
288 val = VIDOSD_Wx_ALPHA_R_F(0x0) | VIDOSD_Wx_ALPHA_G_F(0x0) |
289 VIDOSD_Wx_ALPHA_B_F(0x0);
290 writel(val, ctx->addr + DECON_VIDOSDxC(win));
291
292 val = VIDOSD_Wx_ALPHA_R_F(0x0) | VIDOSD_Wx_ALPHA_G_F(0x0) |
293 VIDOSD_Wx_ALPHA_B_F(0x0);
294 writel(val, ctx->addr + DECON_VIDOSDxD(win));
295
296 writel(dma_addr, ctx->addr + DECON_VIDW0xADD0B0(win));
297
298 val = dma_addr + pitch * state->src.h;
299 writel(val, ctx->addr + DECON_VIDW0xADD1B0(win));
300
301 if (!(ctx->out_type & IFTYPE_HDMI))
302 val = BIT_VAL(pitch - state->crtc.w * bpp, 27, 14)
303 | BIT_VAL(state->crtc.w * bpp, 13, 0);
304 else
305 val = BIT_VAL(pitch - state->crtc.w * bpp, 29, 15)
306 | BIT_VAL(state->crtc.w * bpp, 14, 0);
307 writel(val, ctx->addr + DECON_VIDW0xADD2(win));
308
309 decon_win_set_pixfmt(ctx, win, fb);
310
311 /* window enable */
312 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, ~0);
313 set_bit(BIT_REQUEST_UPDATE, &ctx->flags);
314}
315
316static void decon_disable_plane(struct exynos_drm_crtc *crtc,
317 struct exynos_drm_plane *plane)
318{
319 struct decon_context *ctx = crtc->ctx;
320 unsigned int win = plane->index;
321
322 if (test_bit(BIT_SUSPENDED, &ctx->flags))
323 return;
324
325 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
326 set_bit(BIT_REQUEST_UPDATE, &ctx->flags);
327}
328
329static void decon_atomic_flush(struct exynos_drm_crtc *crtc)
330{
331 struct decon_context *ctx = crtc->ctx;
332 int i;
333
334 if (test_bit(BIT_SUSPENDED, &ctx->flags))
335 return;
336
337 for (i = ctx->first_win; i < WINDOWS_NR; i++)
338 decon_shadow_protect_win(ctx, i, false);
339
340 if (test_and_clear_bit(BIT_REQUEST_UPDATE, &ctx->flags))
341 decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
342
343 if (ctx->out_type & IFTYPE_I80)
344 set_bit(BIT_WIN_UPDATED, &ctx->flags);
345}
346
347static void decon_swreset(struct decon_context *ctx)
348{
349 unsigned int tries;
350
351 writel(0, ctx->addr + DECON_VIDCON0);
352 for (tries = 2000; tries; --tries) {
353 if (~readl(ctx->addr + DECON_VIDCON0) & VIDCON0_STOP_STATUS)
354 break;
355 udelay(10);
356 }
357
358 WARN(tries == 0, "failed to disable DECON\n");
359
360 writel(VIDCON0_SWRESET, ctx->addr + DECON_VIDCON0);
361 for (tries = 2000; tries; --tries) {
362 if (~readl(ctx->addr + DECON_VIDCON0) & VIDCON0_SWRESET)
363 break;
364 udelay(10);
365 }
366
367 WARN(tries == 0, "failed to software reset DECON\n");
368
369 if (!(ctx->out_type & IFTYPE_HDMI))
370 return;
371
372 writel(VIDCON0_CLKVALUP | VIDCON0_VLCKFREE, ctx->addr + DECON_VIDCON0);
373 decon_set_bits(ctx, DECON_CMU,
374 CMU_CLKGAGE_MODE_SFR_F | CMU_CLKGAGE_MODE_MEM_F, ~0);
375 writel(VIDCON1_VCLK_RUN_VDEN_DISABLE, ctx->addr + DECON_VIDCON1);
376 writel(CRCCTRL_CRCEN | CRCCTRL_CRCSTART_F | CRCCTRL_CRCCLKEN,
377 ctx->addr + DECON_CRCCTRL);
378}
379
380static void decon_enable(struct exynos_drm_crtc *crtc)
381{
382 struct decon_context *ctx = crtc->ctx;
383
384 if (!test_and_clear_bit(BIT_SUSPENDED, &ctx->flags))
385 return;
386
387 pm_runtime_get_sync(ctx->dev);
388
389 exynos_drm_pipe_clk_enable(crtc, true);
390
391 set_bit(BIT_CLKS_ENABLED, &ctx->flags);
392
393 decon_swreset(ctx);
394
395 /* if vblank was enabled status, enable it again. */
396 if (test_and_clear_bit(BIT_IRQS_ENABLED, &ctx->flags))
397 decon_enable_vblank(ctx->crtc);
398
399 decon_commit(ctx->crtc);
400}
401
402static void decon_disable(struct exynos_drm_crtc *crtc)
403{
404 struct decon_context *ctx = crtc->ctx;
405 int i;
406
407 if (test_bit(BIT_SUSPENDED, &ctx->flags))
408 return;
409
410 /*
411 * We need to make sure that all windows are disabled before we
412 * suspend that connector. Otherwise we might try to scan from
413 * a destroyed buffer later.
414 */
415 for (i = ctx->first_win; i < WINDOWS_NR; i++)
416 decon_disable_plane(crtc, &ctx->planes[i]);
417
418 decon_swreset(ctx);
419
420 clear_bit(BIT_CLKS_ENABLED, &ctx->flags);
421
422 exynos_drm_pipe_clk_enable(crtc, false);
423
424 pm_runtime_put_sync(ctx->dev);
425
426 set_bit(BIT_SUSPENDED, &ctx->flags);
427}
428
429static void decon_te_irq_handler(struct exynos_drm_crtc *crtc)
430{
431 struct decon_context *ctx = crtc->ctx;
432
433 if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags) ||
434 (ctx->out_type & I80_HW_TRG))
435 return;
436
437 if (test_and_clear_bit(BIT_WIN_UPDATED, &ctx->flags))
438 decon_set_bits(ctx, DECON_TRIGCON, TRIGCON_SWTRIGCMD, ~0);
439}
440
441static void decon_clear_channels(struct exynos_drm_crtc *crtc)
442{
443 struct decon_context *ctx = crtc->ctx;
444 int win, i, ret;
445
446 DRM_DEBUG_KMS("%s\n", __FILE__);
447
448 for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
449 ret = clk_prepare_enable(ctx->clks[i]);
450 if (ret < 0)
451 goto err;
452 }
453
454 for (win = 0; win < WINDOWS_NR; win++) {
455 decon_shadow_protect_win(ctx, win, true);
456 decon_set_bits(ctx, DECON_WINCONx(win), WINCONx_ENWIN_F, 0);
457 decon_shadow_protect_win(ctx, win, false);
458 }
459
460 decon_set_bits(ctx, DECON_UPDATE, STANDALONE_UPDATE_F, ~0);
461
462 /* TODO: wait for possible vsync */
463 msleep(50);
464
465err:
466 while (--i >= 0)
467 clk_disable_unprepare(ctx->clks[i]);
468}
469
470static struct exynos_drm_crtc_ops decon_crtc_ops = {
471 .enable = decon_enable,
472 .disable = decon_disable,
473 .enable_vblank = decon_enable_vblank,
474 .disable_vblank = decon_disable_vblank,
475 .atomic_begin = decon_atomic_begin,
476 .update_plane = decon_update_plane,
477 .disable_plane = decon_disable_plane,
478 .atomic_flush = decon_atomic_flush,
479 .te_handler = decon_te_irq_handler,
480};
481
482static int decon_bind(struct device *dev, struct device *master, void *data)
483{
484 struct decon_context *ctx = dev_get_drvdata(dev);
485 struct drm_device *drm_dev = data;
486 struct exynos_drm_private *priv = drm_dev->dev_private;
487 struct exynos_drm_plane *exynos_plane;
488 enum exynos_drm_output_type out_type;
489 unsigned int win;
490 int ret;
491
492 ctx->drm_dev = drm_dev;
493 ctx->pipe = priv->pipe++;
494
495 for (win = ctx->first_win; win < WINDOWS_NR; win++) {
496 int tmp = (win == ctx->first_win) ? 0 : win;
497
498 ctx->configs[win].pixel_formats = decon_formats;
499 ctx->configs[win].num_pixel_formats = ARRAY_SIZE(decon_formats);
500 ctx->configs[win].zpos = win;
501 ctx->configs[win].type = decon_win_types[tmp];
502
503 ret = exynos_plane_init(drm_dev, &ctx->planes[win], win,
504 1 << ctx->pipe, &ctx->configs[win]);
505 if (ret)
506 return ret;
507 }
508
509 exynos_plane = &ctx->planes[ctx->first_win];
510 out_type = (ctx->out_type & IFTYPE_HDMI) ? EXYNOS_DISPLAY_TYPE_HDMI
511 : EXYNOS_DISPLAY_TYPE_LCD;
512 ctx->crtc = exynos_drm_crtc_create(drm_dev, &exynos_plane->base,
513 ctx->pipe, out_type,
514 &decon_crtc_ops, ctx);
515 if (IS_ERR(ctx->crtc)) {
516 ret = PTR_ERR(ctx->crtc);
517 goto err;
518 }
519
520 decon_clear_channels(ctx->crtc);
521
522 ret = drm_iommu_attach_device(drm_dev, dev);
523 if (ret)
524 goto err;
525
526 return ret;
527err:
528 priv->pipe--;
529 return ret;
530}
531
532static void decon_unbind(struct device *dev, struct device *master, void *data)
533{
534 struct decon_context *ctx = dev_get_drvdata(dev);
535
536 decon_disable(ctx->crtc);
537
538 /* detach this sub driver from iommu mapping if supported. */
539 drm_iommu_detach_device(ctx->drm_dev, ctx->dev);
540}
541
542static const struct component_ops decon_component_ops = {
543 .bind = decon_bind,
544 .unbind = decon_unbind,
545};
546
547static irqreturn_t decon_irq_handler(int irq, void *dev_id)
548{
549 struct decon_context *ctx = dev_id;
550 u32 val;
551
552 if (!test_bit(BIT_CLKS_ENABLED, &ctx->flags))
553 goto out;
554
555 val = readl(ctx->addr + DECON_VIDINTCON1);
556 val &= VIDINTCON1_INTFRMDONEPEND | VIDINTCON1_INTFRMPEND;
557
558 if (val) {
559 writel(val, ctx->addr + DECON_VIDINTCON1);
560 drm_crtc_handle_vblank(&ctx->crtc->base);
561 }
562
563out:
564 return IRQ_HANDLED;
565}
566
567#ifdef CONFIG_PM
568static int exynos5433_decon_suspend(struct device *dev)
569{
570 struct decon_context *ctx = dev_get_drvdata(dev);
571 int i = ARRAY_SIZE(decon_clks_name);
572
573 while (--i >= 0)
574 clk_disable_unprepare(ctx->clks[i]);
575
576 return 0;
577}
578
579static int exynos5433_decon_resume(struct device *dev)
580{
581 struct decon_context *ctx = dev_get_drvdata(dev);
582 int i, ret;
583
584 for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
585 ret = clk_prepare_enable(ctx->clks[i]);
586 if (ret < 0)
587 goto err;
588 }
589
590 return 0;
591
592err:
593 while (--i >= 0)
594 clk_disable_unprepare(ctx->clks[i]);
595
596 return ret;
597}
598#endif
599
600static const struct dev_pm_ops exynos5433_decon_pm_ops = {
601 SET_RUNTIME_PM_OPS(exynos5433_decon_suspend, exynos5433_decon_resume,
602 NULL)
603};
604
605static const struct of_device_id exynos5433_decon_driver_dt_match[] = {
606 {
607 .compatible = "samsung,exynos5433-decon",
608 .data = (void *)I80_HW_TRG
609 },
610 {
611 .compatible = "samsung,exynos5433-decon-tv",
612 .data = (void *)(I80_HW_TRG | IFTYPE_HDMI)
613 },
614 {},
615};
616MODULE_DEVICE_TABLE(of, exynos5433_decon_driver_dt_match);
617
618static int exynos5433_decon_probe(struct platform_device *pdev)
619{
620 struct device *dev = &pdev->dev;
621 struct decon_context *ctx;
622 struct resource *res;
623 int ret;
624 int i;
625
626 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
627 if (!ctx)
628 return -ENOMEM;
629
630 __set_bit(BIT_SUSPENDED, &ctx->flags);
631 ctx->dev = dev;
632 ctx->out_type = (unsigned long)of_device_get_match_data(dev);
633
634 if (ctx->out_type & IFTYPE_HDMI) {
635 ctx->first_win = 1;
636 } else if (of_get_child_by_name(dev->of_node, "i80-if-timings")) {
637 ctx->out_type |= IFTYPE_I80;
638 }
639
640 for (i = 0; i < ARRAY_SIZE(decon_clks_name); i++) {
641 struct clk *clk;
642
643 clk = devm_clk_get(ctx->dev, decon_clks_name[i]);
644 if (IS_ERR(clk))
645 return PTR_ERR(clk);
646
647 ctx->clks[i] = clk;
648 }
649
650 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
651 if (!res) {
652 dev_err(dev, "cannot find IO resource\n");
653 return -ENXIO;
654 }
655
656 ctx->addr = devm_ioremap_resource(dev, res);
657 if (IS_ERR(ctx->addr)) {
658 dev_err(dev, "ioremap failed\n");
659 return PTR_ERR(ctx->addr);
660 }
661
662 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ,
663 (ctx->out_type & IFTYPE_I80) ? "lcd_sys" : "vsync");
664 if (!res) {
665 dev_err(dev, "cannot find IRQ resource\n");
666 return -ENXIO;
667 }
668
669 ret = devm_request_irq(dev, res->start, decon_irq_handler, 0,
670 "drm_decon", ctx);
671 if (ret < 0) {
672 dev_err(dev, "lcd_sys irq request failed\n");
673 return ret;
674 }
675
676 platform_set_drvdata(pdev, ctx);
677
678 pm_runtime_enable(dev);
679
680 ret = component_add(dev, &decon_component_ops);
681 if (ret)
682 goto err_disable_pm_runtime;
683
684 return 0;
685
686err_disable_pm_runtime:
687 pm_runtime_disable(dev);
688
689 return ret;
690}
691
692static int exynos5433_decon_remove(struct platform_device *pdev)
693{
694 pm_runtime_disable(&pdev->dev);
695
696 component_del(&pdev->dev, &decon_component_ops);
697
698 return 0;
699}
700
701struct platform_driver exynos5433_decon_driver = {
702 .probe = exynos5433_decon_probe,
703 .remove = exynos5433_decon_remove,
704 .driver = {
705 .name = "exynos5433-decon",
706 .pm = &exynos5433_decon_pm_ops,
707 .of_match_table = exynos5433_decon_driver_dt_match,
708 },
709};