3 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
5 * Inki Dae <inki.dae@samsung.com>
6 * Joonyoung Shim <jy0922.shim@samsung.com>
7 * Seung-Woo Kim <sw0312.kim@samsung.com>
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
16 #include <drm/drm_crtc_helper.h>
18 #include "exynos_drm_drv.h"
19 #include "exynos_drm_encoder.h"
20 #include "exynos_drm_plane.h"
22 #define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc,\
25 enum exynos_crtc_mode
{
26 CRTC_MODE_NORMAL
, /* normal mode */
27 CRTC_MODE_BLANK
, /* The private plane of crtc is blank */
31 * Exynos specific crtc structure.
33 * @drm_crtc: crtc object.
34 * @drm_plane: pointer of private plane object for this crtc
35 * @pipe: a crtc index created at load() with a new crtc object creation
36 * and the crtc object would be set to private->crtc array
37 * to get a crtc object corresponding to this pipe from private->crtc
38 * array when irq interrupt occured. the reason of using this pipe is that
39 * drm framework doesn't support multiple irq yet.
40 * we can refer to the crtc to current hardware interrupt occured through
42 * @dpms: store the crtc dpms value
43 * @mode: store the crtc mode value
45 struct exynos_drm_crtc
{
46 struct drm_crtc drm_crtc
;
47 struct drm_plane
*plane
;
50 enum exynos_crtc_mode mode
;
51 wait_queue_head_t pending_flip_queue
;
52 atomic_t pending_flip
;
55 static void exynos_drm_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
57 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
59 DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc
->base
.id
, mode
);
61 if (exynos_crtc
->dpms
== mode
) {
62 DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
66 if (mode
> DRM_MODE_DPMS_ON
) {
67 /* wait for the completion of page flip. */
68 wait_event(exynos_crtc
->pending_flip_queue
,
69 atomic_read(&exynos_crtc
->pending_flip
) == 0);
70 drm_vblank_off(crtc
->dev
, exynos_crtc
->pipe
);
73 exynos_drm_fn_encoder(crtc
, &mode
, exynos_drm_encoder_crtc_dpms
);
74 exynos_crtc
->dpms
= mode
;
77 static void exynos_drm_crtc_prepare(struct drm_crtc
*crtc
)
79 DRM_DEBUG_KMS("%s\n", __FILE__
);
81 /* drm framework doesn't check NULL. */
84 static void exynos_drm_crtc_commit(struct drm_crtc
*crtc
)
86 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
88 DRM_DEBUG_KMS("%s\n", __FILE__
);
90 exynos_drm_crtc_dpms(crtc
, DRM_MODE_DPMS_ON
);
91 exynos_plane_commit(exynos_crtc
->plane
);
92 exynos_plane_dpms(exynos_crtc
->plane
, DRM_MODE_DPMS_ON
);
96 exynos_drm_crtc_mode_fixup(struct drm_crtc
*crtc
,
97 const struct drm_display_mode
*mode
,
98 struct drm_display_mode
*adjusted_mode
)
100 DRM_DEBUG_KMS("%s\n", __FILE__
);
102 /* drm framework doesn't check NULL */
107 exynos_drm_crtc_mode_set(struct drm_crtc
*crtc
, struct drm_display_mode
*mode
,
108 struct drm_display_mode
*adjusted_mode
, int x
, int y
,
109 struct drm_framebuffer
*old_fb
)
111 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
112 struct drm_plane
*plane
= exynos_crtc
->plane
;
115 int pipe
= exynos_crtc
->pipe
;
118 DRM_DEBUG_KMS("%s\n", __FILE__
);
121 * copy the mode data adjusted by mode_fixup() into crtc->mode
122 * so that hardware can be seet to proper mode.
124 memcpy(&crtc
->mode
, adjusted_mode
, sizeof(*adjusted_mode
));
126 crtc_w
= crtc
->fb
->width
- x
;
127 crtc_h
= crtc
->fb
->height
- y
;
129 ret
= exynos_plane_mode_set(plane
, crtc
, crtc
->fb
, 0, 0, crtc_w
, crtc_h
,
130 x
, y
, crtc_w
, crtc_h
);
135 plane
->fb
= crtc
->fb
;
137 exynos_drm_fn_encoder(crtc
, &pipe
, exynos_drm_encoder_crtc_pipe
);
142 static int exynos_drm_crtc_mode_set_base(struct drm_crtc
*crtc
, int x
, int y
,
143 struct drm_framebuffer
*old_fb
)
145 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
146 struct drm_plane
*plane
= exynos_crtc
->plane
;
151 DRM_DEBUG_KMS("%s\n", __FILE__
);
153 /* when framebuffer changing is requested, crtc's dpms should be on */
154 if (exynos_crtc
->dpms
> DRM_MODE_DPMS_ON
) {
155 DRM_ERROR("failed framebuffer changing request.\n");
159 crtc_w
= crtc
->fb
->width
- x
;
160 crtc_h
= crtc
->fb
->height
- y
;
162 ret
= exynos_plane_mode_set(plane
, crtc
, crtc
->fb
, 0, 0, crtc_w
, crtc_h
,
163 x
, y
, crtc_w
, crtc_h
);
167 exynos_drm_crtc_commit(crtc
);
172 static void exynos_drm_crtc_load_lut(struct drm_crtc
*crtc
)
174 DRM_DEBUG_KMS("%s\n", __FILE__
);
175 /* drm framework doesn't check NULL */
178 static void exynos_drm_crtc_disable(struct drm_crtc
*crtc
)
180 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
182 DRM_DEBUG_KMS("%s\n", __FILE__
);
184 exynos_plane_dpms(exynos_crtc
->plane
, DRM_MODE_DPMS_OFF
);
185 exynos_drm_crtc_dpms(crtc
, DRM_MODE_DPMS_OFF
);
188 static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs
= {
189 .dpms
= exynos_drm_crtc_dpms
,
190 .prepare
= exynos_drm_crtc_prepare
,
191 .commit
= exynos_drm_crtc_commit
,
192 .mode_fixup
= exynos_drm_crtc_mode_fixup
,
193 .mode_set
= exynos_drm_crtc_mode_set
,
194 .mode_set_base
= exynos_drm_crtc_mode_set_base
,
195 .load_lut
= exynos_drm_crtc_load_lut
,
196 .disable
= exynos_drm_crtc_disable
,
199 static int exynos_drm_crtc_page_flip(struct drm_crtc
*crtc
,
200 struct drm_framebuffer
*fb
,
201 struct drm_pending_vblank_event
*event
)
203 struct drm_device
*dev
= crtc
->dev
;
204 struct exynos_drm_private
*dev_priv
= dev
->dev_private
;
205 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
206 struct drm_framebuffer
*old_fb
= crtc
->fb
;
209 DRM_DEBUG_KMS("%s\n", __FILE__
);
211 /* when the page flip is requested, crtc's dpms should be on */
212 if (exynos_crtc
->dpms
> DRM_MODE_DPMS_ON
) {
213 DRM_ERROR("failed page flip request.\n");
217 mutex_lock(&dev
->struct_mutex
);
221 * the pipe from user always is 0 so we can set pipe number
222 * of current owner to event.
224 event
->pipe
= exynos_crtc
->pipe
;
226 ret
= drm_vblank_get(dev
, exynos_crtc
->pipe
);
228 DRM_DEBUG("failed to acquire vblank counter\n");
233 spin_lock_irq(&dev
->event_lock
);
234 list_add_tail(&event
->base
.link
,
235 &dev_priv
->pageflip_event_list
);
236 atomic_set(&exynos_crtc
->pending_flip
, 1);
237 spin_unlock_irq(&dev
->event_lock
);
240 ret
= exynos_drm_crtc_mode_set_base(crtc
, crtc
->x
, crtc
->y
,
245 spin_lock_irq(&dev
->event_lock
);
246 drm_vblank_put(dev
, exynos_crtc
->pipe
);
247 list_del(&event
->base
.link
);
248 spin_unlock_irq(&dev
->event_lock
);
254 mutex_unlock(&dev
->struct_mutex
);
258 static void exynos_drm_crtc_destroy(struct drm_crtc
*crtc
)
260 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
261 struct exynos_drm_private
*private = crtc
->dev
->dev_private
;
263 DRM_DEBUG_KMS("%s\n", __FILE__
);
265 private->crtc
[exynos_crtc
->pipe
] = NULL
;
267 drm_crtc_cleanup(crtc
);
271 static int exynos_drm_crtc_set_property(struct drm_crtc
*crtc
,
272 struct drm_property
*property
,
275 struct drm_device
*dev
= crtc
->dev
;
276 struct exynos_drm_private
*dev_priv
= dev
->dev_private
;
277 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(crtc
);
279 DRM_DEBUG_KMS("%s\n", __func__
);
281 if (property
== dev_priv
->crtc_mode_property
) {
282 enum exynos_crtc_mode mode
= val
;
284 if (mode
== exynos_crtc
->mode
)
287 exynos_crtc
->mode
= mode
;
290 case CRTC_MODE_NORMAL
:
291 exynos_drm_crtc_commit(crtc
);
293 case CRTC_MODE_BLANK
:
294 exynos_plane_dpms(exynos_crtc
->plane
,
307 static struct drm_crtc_funcs exynos_crtc_funcs
= {
308 .set_config
= drm_crtc_helper_set_config
,
309 .page_flip
= exynos_drm_crtc_page_flip
,
310 .destroy
= exynos_drm_crtc_destroy
,
311 .set_property
= exynos_drm_crtc_set_property
,
314 static const struct drm_prop_enum_list mode_names
[] = {
315 { CRTC_MODE_NORMAL
, "normal" },
316 { CRTC_MODE_BLANK
, "blank" },
319 static void exynos_drm_crtc_attach_mode_property(struct drm_crtc
*crtc
)
321 struct drm_device
*dev
= crtc
->dev
;
322 struct exynos_drm_private
*dev_priv
= dev
->dev_private
;
323 struct drm_property
*prop
;
325 DRM_DEBUG_KMS("%s\n", __func__
);
327 prop
= dev_priv
->crtc_mode_property
;
329 prop
= drm_property_create_enum(dev
, 0, "mode", mode_names
,
330 ARRAY_SIZE(mode_names
));
334 dev_priv
->crtc_mode_property
= prop
;
337 drm_object_attach_property(&crtc
->base
, prop
, 0);
340 int exynos_drm_crtc_create(struct drm_device
*dev
, unsigned int nr
)
342 struct exynos_drm_crtc
*exynos_crtc
;
343 struct exynos_drm_private
*private = dev
->dev_private
;
344 struct drm_crtc
*crtc
;
346 DRM_DEBUG_KMS("%s\n", __FILE__
);
348 exynos_crtc
= kzalloc(sizeof(*exynos_crtc
), GFP_KERNEL
);
350 DRM_ERROR("failed to allocate exynos crtc\n");
354 exynos_crtc
->pipe
= nr
;
355 exynos_crtc
->dpms
= DRM_MODE_DPMS_OFF
;
356 init_waitqueue_head(&exynos_crtc
->pending_flip_queue
);
357 atomic_set(&exynos_crtc
->pending_flip
, 0);
358 exynos_crtc
->plane
= exynos_plane_init(dev
, 1 << nr
, true);
359 if (!exynos_crtc
->plane
) {
364 crtc
= &exynos_crtc
->drm_crtc
;
366 private->crtc
[nr
] = crtc
;
368 drm_crtc_init(dev
, crtc
, &exynos_crtc_funcs
);
369 drm_crtc_helper_add(crtc
, &exynos_crtc_helper_funcs
);
371 exynos_drm_crtc_attach_mode_property(crtc
);
376 int exynos_drm_crtc_enable_vblank(struct drm_device
*dev
, int crtc
)
378 struct exynos_drm_private
*private = dev
->dev_private
;
379 struct exynos_drm_crtc
*exynos_crtc
=
380 to_exynos_crtc(private->crtc
[crtc
]);
382 DRM_DEBUG_KMS("%s\n", __FILE__
);
384 if (exynos_crtc
->dpms
!= DRM_MODE_DPMS_ON
)
387 exynos_drm_fn_encoder(private->crtc
[crtc
], &crtc
,
388 exynos_drm_enable_vblank
);
393 void exynos_drm_crtc_disable_vblank(struct drm_device
*dev
, int crtc
)
395 struct exynos_drm_private
*private = dev
->dev_private
;
396 struct exynos_drm_crtc
*exynos_crtc
=
397 to_exynos_crtc(private->crtc
[crtc
]);
399 DRM_DEBUG_KMS("%s\n", __FILE__
);
401 if (exynos_crtc
->dpms
!= DRM_MODE_DPMS_ON
)
404 exynos_drm_fn_encoder(private->crtc
[crtc
], &crtc
,
405 exynos_drm_disable_vblank
);
408 void exynos_drm_crtc_finish_pageflip(struct drm_device
*dev
, int crtc
)
410 struct exynos_drm_private
*dev_priv
= dev
->dev_private
;
411 struct drm_pending_vblank_event
*e
, *t
;
412 struct drm_crtc
*drm_crtc
= dev_priv
->crtc
[crtc
];
413 struct exynos_drm_crtc
*exynos_crtc
= to_exynos_crtc(drm_crtc
);
416 DRM_DEBUG_KMS("%s\n", __FILE__
);
418 spin_lock_irqsave(&dev
->event_lock
, flags
);
420 list_for_each_entry_safe(e
, t
, &dev_priv
->pageflip_event_list
,
422 /* if event's pipe isn't same as crtc then ignore it. */
426 list_del(&e
->base
.link
);
427 drm_send_vblank_event(dev
, -1, e
);
428 drm_vblank_put(dev
, crtc
);
429 atomic_set(&exynos_crtc
->pending_flip
, 0);
430 wake_up(&exynos_crtc
->pending_flip_queue
);
433 spin_unlock_irqrestore(&dev
->event_lock
, flags
);