1 /* drivers/gpu/drm/exynos/exynos7_drm_decon.c
3 * Copyright (C) 2014 Samsung Electronics Co.Ltd
5 * Akshu Agarwal <akshua@gmail.com>
6 * Ajay Kumar <ajaykumar.rs@samsung.com>
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
15 #include <drm/exynos_drm.h>
17 #include <linux/clk.h>
18 #include <linux/component.h>
19 #include <linux/kernel.h>
21 #include <linux/of_address.h>
22 #include <linux/of_device.h>
23 #include <linux/platform_device.h>
24 #include <linux/pm_runtime.h>
26 #include <video/of_display_timing.h>
27 #include <video/of_videomode.h>
28 #include <video/exynos7_decon.h>
30 #include "exynos_drm_crtc.h"
31 #include "exynos_drm_plane.h"
32 #include "exynos_drm_drv.h"
33 #include "exynos_drm_fb.h"
34 #include "exynos_drm_iommu.h"
37 * DECON stands for Display and Enhancement controller.
40 #define MIN_FB_WIDTH_FOR_16WORD_BURST 128
44 struct decon_context
{
46 struct drm_device
*drm_dev
;
47 struct exynos_drm_crtc
*crtc
;
48 struct exynos_drm_plane planes
[WINDOWS_NR
];
49 struct exynos_drm_plane_config configs
[WINDOWS_NR
];
55 unsigned long irq_flags
;
59 wait_queue_head_t wait_vsync_queue
;
60 atomic_t wait_vsync_event
;
62 struct drm_encoder
*encoder
;
65 static const struct of_device_id decon_driver_dt_match
[] = {
66 {.compatible
= "samsung,exynos7-decon"},
69 MODULE_DEVICE_TABLE(of
, decon_driver_dt_match
);
71 static const uint32_t decon_formats
[] = {
83 static const enum drm_plane_type decon_win_types
[WINDOWS_NR
] = {
84 DRM_PLANE_TYPE_PRIMARY
,
85 DRM_PLANE_TYPE_CURSOR
,
88 static void decon_wait_for_vblank(struct exynos_drm_crtc
*crtc
)
90 struct decon_context
*ctx
= crtc
->ctx
;
95 atomic_set(&ctx
->wait_vsync_event
, 1);
98 * wait for DECON to signal VSYNC interrupt or return after
99 * timeout which is set to 50ms (refresh rate of 20).
101 if (!wait_event_timeout(ctx
->wait_vsync_queue
,
102 !atomic_read(&ctx
->wait_vsync_event
),
104 DRM_DEBUG_KMS("vblank wait timed out.\n");
107 static void decon_clear_channels(struct exynos_drm_crtc
*crtc
)
109 struct decon_context
*ctx
= crtc
->ctx
;
110 unsigned int win
, ch_enabled
= 0;
112 DRM_DEBUG_KMS("%s\n", __FILE__
);
114 /* Check if any channel is enabled. */
115 for (win
= 0; win
< WINDOWS_NR
; win
++) {
116 u32 val
= readl(ctx
->regs
+ WINCON(win
));
118 if (val
& WINCONx_ENWIN
) {
119 val
&= ~WINCONx_ENWIN
;
120 writel(val
, ctx
->regs
+ WINCON(win
));
125 /* Wait for vsync, as disable channel takes effect at next vsync */
127 decon_wait_for_vblank(ctx
->crtc
);
130 static int decon_ctx_initialize(struct decon_context
*ctx
,
131 struct drm_device
*drm_dev
)
133 struct exynos_drm_private
*priv
= drm_dev
->dev_private
;
136 ctx
->drm_dev
= drm_dev
;
137 ctx
->pipe
= priv
->pipe
++;
139 decon_clear_channels(ctx
->crtc
);
141 ret
= drm_iommu_attach_device(drm_dev
, ctx
->dev
);
148 static void decon_ctx_remove(struct decon_context
*ctx
)
150 /* detach this sub driver from iommu mapping if supported. */
151 drm_iommu_detach_device(ctx
->drm_dev
, ctx
->dev
);
154 static u32
decon_calc_clkdiv(struct decon_context
*ctx
,
155 const struct drm_display_mode
*mode
)
157 unsigned long ideal_clk
= mode
->htotal
* mode
->vtotal
* mode
->vrefresh
;
160 /* Find the clock divider value that gets us closest to ideal_clk */
161 clkdiv
= DIV_ROUND_UP(clk_get_rate(ctx
->vclk
), ideal_clk
);
163 return (clkdiv
< 0x100) ? clkdiv
: 0xff;
166 static void decon_commit(struct exynos_drm_crtc
*crtc
)
168 struct decon_context
*ctx
= crtc
->ctx
;
169 struct drm_display_mode
*mode
= &crtc
->base
.state
->adjusted_mode
;
175 /* nothing to do if we haven't set the mode yet */
176 if (mode
->htotal
== 0 || mode
->vtotal
== 0)
180 int vsync_len
, vbpd
, vfpd
, hsync_len
, hbpd
, hfpd
;
181 /* setup vertical timing values. */
182 vsync_len
= mode
->crtc_vsync_end
- mode
->crtc_vsync_start
;
183 vbpd
= mode
->crtc_vtotal
- mode
->crtc_vsync_end
;
184 vfpd
= mode
->crtc_vsync_start
- mode
->crtc_vdisplay
;
186 val
= VIDTCON0_VBPD(vbpd
- 1) | VIDTCON0_VFPD(vfpd
- 1);
187 writel(val
, ctx
->regs
+ VIDTCON0
);
189 val
= VIDTCON1_VSPW(vsync_len
- 1);
190 writel(val
, ctx
->regs
+ VIDTCON1
);
192 /* setup horizontal timing values. */
193 hsync_len
= mode
->crtc_hsync_end
- mode
->crtc_hsync_start
;
194 hbpd
= mode
->crtc_htotal
- mode
->crtc_hsync_end
;
195 hfpd
= mode
->crtc_hsync_start
- mode
->crtc_hdisplay
;
197 /* setup horizontal timing values. */
198 val
= VIDTCON2_HBPD(hbpd
- 1) | VIDTCON2_HFPD(hfpd
- 1);
199 writel(val
, ctx
->regs
+ VIDTCON2
);
201 val
= VIDTCON3_HSPW(hsync_len
- 1);
202 writel(val
, ctx
->regs
+ VIDTCON3
);
205 /* setup horizontal and vertical display size. */
206 val
= VIDTCON4_LINEVAL(mode
->vdisplay
- 1) |
207 VIDTCON4_HOZVAL(mode
->hdisplay
- 1);
208 writel(val
, ctx
->regs
+ VIDTCON4
);
210 writel(mode
->vdisplay
- 1, ctx
->regs
+ LINECNT_OP_THRESHOLD
);
213 * fields of register with prefix '_F' would be updated
214 * at vsync(same as dma start)
216 val
= VIDCON0_ENVID
| VIDCON0_ENVID_F
;
217 writel(val
, ctx
->regs
+ VIDCON0
);
219 clkdiv
= decon_calc_clkdiv(ctx
, mode
);
221 val
= VCLKCON1_CLKVAL_NUM_VCLK(clkdiv
- 1);
222 writel(val
, ctx
->regs
+ VCLKCON1
);
223 writel(val
, ctx
->regs
+ VCLKCON2
);
226 val
= readl(ctx
->regs
+ DECON_UPDATE
);
227 val
|= DECON_UPDATE_STANDALONE_F
;
228 writel(val
, ctx
->regs
+ DECON_UPDATE
);
231 static int decon_enable_vblank(struct exynos_drm_crtc
*crtc
)
233 struct decon_context
*ctx
= crtc
->ctx
;
239 if (!test_and_set_bit(0, &ctx
->irq_flags
)) {
240 val
= readl(ctx
->regs
+ VIDINTCON0
);
242 val
|= VIDINTCON0_INT_ENABLE
;
245 val
|= VIDINTCON0_INT_FRAME
;
246 val
&= ~VIDINTCON0_FRAMESEL0_MASK
;
247 val
|= VIDINTCON0_FRAMESEL0_VSYNC
;
250 writel(val
, ctx
->regs
+ VIDINTCON0
);
256 static void decon_disable_vblank(struct exynos_drm_crtc
*crtc
)
258 struct decon_context
*ctx
= crtc
->ctx
;
264 if (test_and_clear_bit(0, &ctx
->irq_flags
)) {
265 val
= readl(ctx
->regs
+ VIDINTCON0
);
267 val
&= ~VIDINTCON0_INT_ENABLE
;
269 val
&= ~VIDINTCON0_INT_FRAME
;
271 writel(val
, ctx
->regs
+ VIDINTCON0
);
275 static void decon_win_set_pixfmt(struct decon_context
*ctx
, unsigned int win
,
276 struct drm_framebuffer
*fb
)
281 val
= readl(ctx
->regs
+ WINCON(win
));
282 val
&= ~WINCONx_BPPMODE_MASK
;
284 switch (fb
->format
->format
) {
285 case DRM_FORMAT_RGB565
:
286 val
|= WINCONx_BPPMODE_16BPP_565
;
287 val
|= WINCONx_BURSTLEN_16WORD
;
289 case DRM_FORMAT_XRGB8888
:
290 val
|= WINCONx_BPPMODE_24BPP_xRGB
;
291 val
|= WINCONx_BURSTLEN_16WORD
;
293 case DRM_FORMAT_XBGR8888
:
294 val
|= WINCONx_BPPMODE_24BPP_xBGR
;
295 val
|= WINCONx_BURSTLEN_16WORD
;
297 case DRM_FORMAT_RGBX8888
:
298 val
|= WINCONx_BPPMODE_24BPP_RGBx
;
299 val
|= WINCONx_BURSTLEN_16WORD
;
301 case DRM_FORMAT_BGRX8888
:
302 val
|= WINCONx_BPPMODE_24BPP_BGRx
;
303 val
|= WINCONx_BURSTLEN_16WORD
;
305 case DRM_FORMAT_ARGB8888
:
306 val
|= WINCONx_BPPMODE_32BPP_ARGB
| WINCONx_BLD_PIX
|
308 val
|= WINCONx_BURSTLEN_16WORD
;
310 case DRM_FORMAT_ABGR8888
:
311 val
|= WINCONx_BPPMODE_32BPP_ABGR
| WINCONx_BLD_PIX
|
313 val
|= WINCONx_BURSTLEN_16WORD
;
315 case DRM_FORMAT_RGBA8888
:
316 val
|= WINCONx_BPPMODE_32BPP_RGBA
| WINCONx_BLD_PIX
|
318 val
|= WINCONx_BURSTLEN_16WORD
;
320 case DRM_FORMAT_BGRA8888
:
321 val
|= WINCONx_BPPMODE_32BPP_BGRA
| WINCONx_BLD_PIX
|
323 val
|= WINCONx_BURSTLEN_16WORD
;
326 DRM_DEBUG_KMS("invalid pixel size so using unpacked 24bpp.\n");
328 val
|= WINCONx_BPPMODE_24BPP_xRGB
;
329 val
|= WINCONx_BURSTLEN_16WORD
;
333 DRM_DEBUG_KMS("bpp = %d\n", fb
->format
->cpp
[0] * 8);
336 * In case of exynos, setting dma-burst to 16Word causes permanent
337 * tearing for very small buffers, e.g. cursor buffer. Burst Mode
338 * switching which is based on plane size is not recommended as
339 * plane size varies a lot towards the end of the screen and rapid
340 * movement causes unstable DMA which results into iommu crash/tear.
343 padding
= (fb
->pitches
[0] / fb
->format
->cpp
[0]) - fb
->width
;
344 if (fb
->width
+ padding
< MIN_FB_WIDTH_FOR_16WORD_BURST
) {
345 val
&= ~WINCONx_BURSTLEN_MASK
;
346 val
|= WINCONx_BURSTLEN_8WORD
;
349 writel(val
, ctx
->regs
+ WINCON(win
));
352 static void decon_win_set_colkey(struct decon_context
*ctx
, unsigned int win
)
354 unsigned int keycon0
= 0, keycon1
= 0;
356 keycon0
= ~(WxKEYCON0_KEYBL_EN
| WxKEYCON0_KEYEN_F
|
357 WxKEYCON0_DIRCON
) | WxKEYCON0_COMPKEY(0);
359 keycon1
= WxKEYCON1_COLVAL(0xffffffff);
361 writel(keycon0
, ctx
->regs
+ WKEYCON0_BASE(win
));
362 writel(keycon1
, ctx
->regs
+ WKEYCON1_BASE(win
));
366 * shadow_protect_win() - disable updating values from shadow registers at vsync
368 * @win: window to protect registers for
369 * @protect: 1 to protect (disable updates)
371 static void decon_shadow_protect_win(struct decon_context
*ctx
,
372 unsigned int win
, bool protect
)
376 bits
= SHADOWCON_WINx_PROTECT(win
);
378 val
= readl(ctx
->regs
+ SHADOWCON
);
383 writel(val
, ctx
->regs
+ SHADOWCON
);
386 static void decon_atomic_begin(struct exynos_drm_crtc
*crtc
)
388 struct decon_context
*ctx
= crtc
->ctx
;
394 for (i
= 0; i
< WINDOWS_NR
; i
++)
395 decon_shadow_protect_win(ctx
, i
, true);
398 static void decon_update_plane(struct exynos_drm_crtc
*crtc
,
399 struct exynos_drm_plane
*plane
)
401 struct exynos_drm_plane_state
*state
=
402 to_exynos_plane_state(plane
->base
.state
);
403 struct decon_context
*ctx
= crtc
->ctx
;
404 struct drm_framebuffer
*fb
= state
->base
.fb
;
406 unsigned long val
, alpha
;
409 unsigned int win
= plane
->index
;
410 unsigned int bpp
= fb
->format
->cpp
[0];
411 unsigned int pitch
= fb
->pitches
[0];
417 * SHADOWCON/PRTCON register is used for enabling timing.
419 * for example, once only width value of a register is set,
420 * if the dma is started then decon hardware could malfunction so
421 * with protect window setting, the register fields with prefix '_F'
422 * wouldn't be updated at vsync also but updated once unprotect window
426 /* buffer start address */
427 val
= (unsigned long)exynos_drm_fb_dma_addr(fb
, 0);
428 writel(val
, ctx
->regs
+ VIDW_BUF_START(win
));
430 padding
= (pitch
/ bpp
) - fb
->width
;
433 writel(fb
->width
+ padding
, ctx
->regs
+ VIDW_WHOLE_X(win
));
434 writel(fb
->height
, ctx
->regs
+ VIDW_WHOLE_Y(win
));
436 /* offset from the start of the buffer to read */
437 writel(state
->src
.x
, ctx
->regs
+ VIDW_OFFSET_X(win
));
438 writel(state
->src
.y
, ctx
->regs
+ VIDW_OFFSET_Y(win
));
440 DRM_DEBUG_KMS("start addr = 0x%lx\n",
442 DRM_DEBUG_KMS("ovl_width = %d, ovl_height = %d\n",
443 state
->crtc
.w
, state
->crtc
.h
);
445 val
= VIDOSDxA_TOPLEFT_X(state
->crtc
.x
) |
446 VIDOSDxA_TOPLEFT_Y(state
->crtc
.y
);
447 writel(val
, ctx
->regs
+ VIDOSD_A(win
));
449 last_x
= state
->crtc
.x
+ state
->crtc
.w
;
452 last_y
= state
->crtc
.y
+ state
->crtc
.h
;
456 val
= VIDOSDxB_BOTRIGHT_X(last_x
) | VIDOSDxB_BOTRIGHT_Y(last_y
);
458 writel(val
, ctx
->regs
+ VIDOSD_B(win
));
460 DRM_DEBUG_KMS("osd pos: tx = %d, ty = %d, bx = %d, by = %d\n",
461 state
->crtc
.x
, state
->crtc
.y
, last_x
, last_y
);
464 alpha
= VIDOSDxC_ALPHA0_R_F(0x0) |
465 VIDOSDxC_ALPHA0_G_F(0x0) |
466 VIDOSDxC_ALPHA0_B_F(0x0);
468 writel(alpha
, ctx
->regs
+ VIDOSD_C(win
));
470 alpha
= VIDOSDxD_ALPHA1_R_F(0xff) |
471 VIDOSDxD_ALPHA1_G_F(0xff) |
472 VIDOSDxD_ALPHA1_B_F(0xff);
474 writel(alpha
, ctx
->regs
+ VIDOSD_D(win
));
476 decon_win_set_pixfmt(ctx
, win
, fb
);
478 /* hardware window 0 doesn't support color key. */
480 decon_win_set_colkey(ctx
, win
);
483 val
= readl(ctx
->regs
+ WINCON(win
));
484 val
|= WINCONx_TRIPLE_BUF_MODE
;
485 val
|= WINCONx_ENWIN
;
486 writel(val
, ctx
->regs
+ WINCON(win
));
488 /* Enable DMA channel and unprotect windows */
489 decon_shadow_protect_win(ctx
, win
, false);
491 val
= readl(ctx
->regs
+ DECON_UPDATE
);
492 val
|= DECON_UPDATE_STANDALONE_F
;
493 writel(val
, ctx
->regs
+ DECON_UPDATE
);
496 static void decon_disable_plane(struct exynos_drm_crtc
*crtc
,
497 struct exynos_drm_plane
*plane
)
499 struct decon_context
*ctx
= crtc
->ctx
;
500 unsigned int win
= plane
->index
;
506 /* protect windows */
507 decon_shadow_protect_win(ctx
, win
, true);
510 val
= readl(ctx
->regs
+ WINCON(win
));
511 val
&= ~WINCONx_ENWIN
;
512 writel(val
, ctx
->regs
+ WINCON(win
));
514 val
= readl(ctx
->regs
+ DECON_UPDATE
);
515 val
|= DECON_UPDATE_STANDALONE_F
;
516 writel(val
, ctx
->regs
+ DECON_UPDATE
);
519 static void decon_atomic_flush(struct exynos_drm_crtc
*crtc
)
521 struct decon_context
*ctx
= crtc
->ctx
;
527 for (i
= 0; i
< WINDOWS_NR
; i
++)
528 decon_shadow_protect_win(ctx
, i
, false);
531 static void decon_init(struct decon_context
*ctx
)
535 writel(VIDCON0_SWRESET
, ctx
->regs
+ VIDCON0
);
537 val
= VIDOUTCON0_DISP_IF_0_ON
;
539 val
|= VIDOUTCON0_RGBIF
;
540 writel(val
, ctx
->regs
+ VIDOUTCON0
);
542 writel(VCLKCON0_CLKVALUP
| VCLKCON0_VCLKFREE
, ctx
->regs
+ VCLKCON0
);
545 writel(VIDCON1_VCLK_HOLD
, ctx
->regs
+ VIDCON1(0));
548 static void decon_enable(struct exynos_drm_crtc
*crtc
)
550 struct decon_context
*ctx
= crtc
->ctx
;
555 pm_runtime_get_sync(ctx
->dev
);
559 /* if vblank was enabled status, enable it again. */
560 if (test_and_clear_bit(0, &ctx
->irq_flags
))
561 decon_enable_vblank(ctx
->crtc
);
563 decon_commit(ctx
->crtc
);
565 ctx
->suspended
= false;
568 static void decon_disable(struct exynos_drm_crtc
*crtc
)
570 struct decon_context
*ctx
= crtc
->ctx
;
577 * We need to make sure that all windows are disabled before we
578 * suspend that connector. Otherwise we might try to scan from
579 * a destroyed buffer later.
581 for (i
= 0; i
< WINDOWS_NR
; i
++)
582 decon_disable_plane(crtc
, &ctx
->planes
[i
]);
584 pm_runtime_put_sync(ctx
->dev
);
586 ctx
->suspended
= true;
589 static const struct exynos_drm_crtc_ops decon_crtc_ops
= {
590 .enable
= decon_enable
,
591 .disable
= decon_disable
,
592 .commit
= decon_commit
,
593 .enable_vblank
= decon_enable_vblank
,
594 .disable_vblank
= decon_disable_vblank
,
595 .atomic_begin
= decon_atomic_begin
,
596 .update_plane
= decon_update_plane
,
597 .disable_plane
= decon_disable_plane
,
598 .atomic_flush
= decon_atomic_flush
,
602 static irqreturn_t
decon_irq_handler(int irq
, void *dev_id
)
604 struct decon_context
*ctx
= (struct decon_context
*)dev_id
;
607 val
= readl(ctx
->regs
+ VIDINTCON1
);
609 clear_bit
= ctx
->i80_if
? VIDINTCON1_INT_I80
: VIDINTCON1_INT_FRAME
;
611 writel(clear_bit
, ctx
->regs
+ VIDINTCON1
);
613 /* check the crtc is detached already from encoder */
614 if (ctx
->pipe
< 0 || !ctx
->drm_dev
)
618 drm_crtc_handle_vblank(&ctx
->crtc
->base
);
620 /* set wait vsync event to zero and wake up queue. */
621 if (atomic_read(&ctx
->wait_vsync_event
)) {
622 atomic_set(&ctx
->wait_vsync_event
, 0);
623 wake_up(&ctx
->wait_vsync_queue
);
630 static int decon_bind(struct device
*dev
, struct device
*master
, void *data
)
632 struct decon_context
*ctx
= dev_get_drvdata(dev
);
633 struct drm_device
*drm_dev
= data
;
634 struct exynos_drm_plane
*exynos_plane
;
638 ret
= decon_ctx_initialize(ctx
, drm_dev
);
640 DRM_ERROR("decon_ctx_initialize failed.\n");
644 for (i
= 0; i
< WINDOWS_NR
; i
++) {
645 ctx
->configs
[i
].pixel_formats
= decon_formats
;
646 ctx
->configs
[i
].num_pixel_formats
= ARRAY_SIZE(decon_formats
);
647 ctx
->configs
[i
].zpos
= i
;
648 ctx
->configs
[i
].type
= decon_win_types
[i
];
650 ret
= exynos_plane_init(drm_dev
, &ctx
->planes
[i
], i
,
651 1 << ctx
->pipe
, &ctx
->configs
[i
]);
656 exynos_plane
= &ctx
->planes
[DEFAULT_WIN
];
657 ctx
->crtc
= exynos_drm_crtc_create(drm_dev
, &exynos_plane
->base
,
658 ctx
->pipe
, EXYNOS_DISPLAY_TYPE_LCD
,
659 &decon_crtc_ops
, ctx
);
660 if (IS_ERR(ctx
->crtc
)) {
661 decon_ctx_remove(ctx
);
662 return PTR_ERR(ctx
->crtc
);
666 exynos_dpi_bind(drm_dev
, ctx
->encoder
);
672 static void decon_unbind(struct device
*dev
, struct device
*master
,
675 struct decon_context
*ctx
= dev_get_drvdata(dev
);
677 decon_disable(ctx
->crtc
);
680 exynos_dpi_remove(ctx
->encoder
);
682 decon_ctx_remove(ctx
);
685 static const struct component_ops decon_component_ops
= {
687 .unbind
= decon_unbind
,
690 static int decon_probe(struct platform_device
*pdev
)
692 struct device
*dev
= &pdev
->dev
;
693 struct decon_context
*ctx
;
694 struct device_node
*i80_if_timings
;
695 struct resource
*res
;
701 ctx
= devm_kzalloc(dev
, sizeof(*ctx
), GFP_KERNEL
);
706 ctx
->suspended
= true;
708 i80_if_timings
= of_get_child_by_name(dev
->of_node
, "i80-if-timings");
711 of_node_put(i80_if_timings
);
713 ctx
->regs
= of_iomap(dev
->of_node
, 0);
717 ctx
->pclk
= devm_clk_get(dev
, "pclk_decon0");
718 if (IS_ERR(ctx
->pclk
)) {
719 dev_err(dev
, "failed to get bus clock pclk\n");
720 ret
= PTR_ERR(ctx
->pclk
);
724 ctx
->aclk
= devm_clk_get(dev
, "aclk_decon0");
725 if (IS_ERR(ctx
->aclk
)) {
726 dev_err(dev
, "failed to get bus clock aclk\n");
727 ret
= PTR_ERR(ctx
->aclk
);
731 ctx
->eclk
= devm_clk_get(dev
, "decon0_eclk");
732 if (IS_ERR(ctx
->eclk
)) {
733 dev_err(dev
, "failed to get eclock\n");
734 ret
= PTR_ERR(ctx
->eclk
);
738 ctx
->vclk
= devm_clk_get(dev
, "decon0_vclk");
739 if (IS_ERR(ctx
->vclk
)) {
740 dev_err(dev
, "failed to get vclock\n");
741 ret
= PTR_ERR(ctx
->vclk
);
745 res
= platform_get_resource_byname(pdev
, IORESOURCE_IRQ
,
746 ctx
->i80_if
? "lcd_sys" : "vsync");
748 dev_err(dev
, "irq request failed.\n");
753 ret
= devm_request_irq(dev
, res
->start
, decon_irq_handler
,
754 0, "drm_decon", ctx
);
756 dev_err(dev
, "irq request failed.\n");
760 init_waitqueue_head(&ctx
->wait_vsync_queue
);
761 atomic_set(&ctx
->wait_vsync_event
, 0);
763 platform_set_drvdata(pdev
, ctx
);
765 ctx
->encoder
= exynos_dpi_probe(dev
);
766 if (IS_ERR(ctx
->encoder
)) {
767 ret
= PTR_ERR(ctx
->encoder
);
771 pm_runtime_enable(dev
);
773 ret
= component_add(dev
, &decon_component_ops
);
775 goto err_disable_pm_runtime
;
779 err_disable_pm_runtime
:
780 pm_runtime_disable(dev
);
788 static int decon_remove(struct platform_device
*pdev
)
790 struct decon_context
*ctx
= dev_get_drvdata(&pdev
->dev
);
792 pm_runtime_disable(&pdev
->dev
);
796 component_del(&pdev
->dev
, &decon_component_ops
);
802 static int exynos7_decon_suspend(struct device
*dev
)
804 struct decon_context
*ctx
= dev_get_drvdata(dev
);
806 clk_disable_unprepare(ctx
->vclk
);
807 clk_disable_unprepare(ctx
->eclk
);
808 clk_disable_unprepare(ctx
->aclk
);
809 clk_disable_unprepare(ctx
->pclk
);
814 static int exynos7_decon_resume(struct device
*dev
)
816 struct decon_context
*ctx
= dev_get_drvdata(dev
);
819 ret
= clk_prepare_enable(ctx
->pclk
);
821 DRM_ERROR("Failed to prepare_enable the pclk [%d]\n", ret
);
825 ret
= clk_prepare_enable(ctx
->aclk
);
827 DRM_ERROR("Failed to prepare_enable the aclk [%d]\n", ret
);
831 ret
= clk_prepare_enable(ctx
->eclk
);
833 DRM_ERROR("Failed to prepare_enable the eclk [%d]\n", ret
);
837 ret
= clk_prepare_enable(ctx
->vclk
);
839 DRM_ERROR("Failed to prepare_enable the vclk [%d]\n", ret
);
847 static const struct dev_pm_ops exynos7_decon_pm_ops
= {
848 SET_RUNTIME_PM_OPS(exynos7_decon_suspend
, exynos7_decon_resume
,
852 struct platform_driver decon_driver
= {
853 .probe
= decon_probe
,
854 .remove
= decon_remove
,
856 .name
= "exynos-decon",
857 .pm
= &exynos7_decon_pm_ops
,
858 .of_match_table
= decon_driver_dt_match
,