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_crtc.h"
19 #include "exynos_drm_drv.h"
20 #include "exynos_drm_encoder.h"
21 #include "exynos_drm_plane.h"
23 #define to_exynos_crtc(x) container_of(x, struct exynos_drm_crtc,\
26 enum exynos_crtc_mode {
27 CRTC_MODE_NORMAL, /* normal mode */
28 CRTC_MODE_BLANK, /* The private plane of crtc is blank */
32 * Exynos specific crtc structure.
34 * @drm_crtc: crtc object.
35 * @manager: the manager associated with this crtc
36 * @pipe: a crtc index created at load() with a new crtc object creation
37 * and the crtc object would be set to private->crtc array
38 * to get a crtc object corresponding to this pipe from private->crtc
39 * array when irq interrupt occurred. the reason of using this pipe is that
40 * drm framework doesn't support multiple irq yet.
41 * we can refer to the crtc to current hardware interrupt occurred through
43 * @dpms: store the crtc dpms value
44 * @mode: store the crtc mode value
46 struct exynos_drm_crtc {
47 struct drm_crtc drm_crtc;
48 struct exynos_drm_manager *manager;
51 enum exynos_crtc_mode mode;
52 wait_queue_head_t pending_flip_queue;
53 atomic_t pending_flip;
56 static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
58 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
59 struct exynos_drm_manager *manager = exynos_crtc->manager;
61 DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
63 if (exynos_crtc->dpms == mode) {
64 DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
68 if (mode > DRM_MODE_DPMS_ON) {
69 /* wait for the completion of page flip. */
70 if (!wait_event_timeout(exynos_crtc->pending_flip_queue,
71 !atomic_read(&exynos_crtc->pending_flip),
73 atomic_set(&exynos_crtc->pending_flip, 0);
74 drm_crtc_vblank_off(crtc);
77 if (manager->ops->dpms)
78 manager->ops->dpms(manager, mode);
80 exynos_crtc->dpms = mode;
82 if (mode == DRM_MODE_DPMS_ON)
83 drm_crtc_vblank_on(crtc);
86 static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)
88 /* drm framework doesn't check NULL. */
91 static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
93 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
94 struct exynos_drm_manager *manager = exynos_crtc->manager;
96 exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
98 exynos_plane_commit(crtc->primary);
100 if (manager->ops->commit)
101 manager->ops->commit(manager);
103 exynos_plane_dpms(crtc->primary, DRM_MODE_DPMS_ON);
107 exynos_drm_crtc_mode_fixup(struct drm_crtc *crtc,
108 const struct drm_display_mode *mode,
109 struct drm_display_mode *adjusted_mode)
111 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
112 struct exynos_drm_manager *manager = exynos_crtc->manager;
114 if (manager->ops->mode_fixup)
115 return manager->ops->mode_fixup(manager, mode, adjusted_mode);
121 exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
122 struct drm_display_mode *adjusted_mode, int x, int y,
123 struct drm_framebuffer *old_fb)
125 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
126 struct exynos_drm_manager *manager = exynos_crtc->manager;
127 struct drm_framebuffer *fb = crtc->primary->fb;
132 * copy the mode data adjusted by mode_fixup() into crtc->mode
133 * so that hardware can be seet to proper mode.
135 memcpy(&crtc->mode, adjusted_mode, sizeof(*adjusted_mode));
137 crtc_w = fb->width - x;
138 crtc_h = fb->height - y;
140 if (manager->ops->mode_set)
141 manager->ops->mode_set(manager, &crtc->mode);
143 return exynos_plane_mode_set(crtc->primary, crtc, fb, 0, 0,
144 crtc_w, crtc_h, x, y, crtc_w, crtc_h);
147 static int exynos_drm_crtc_mode_set_commit(struct drm_crtc *crtc, int x, int y,
148 struct drm_framebuffer *old_fb)
150 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
151 struct drm_framebuffer *fb = crtc->primary->fb;
156 /* when framebuffer changing is requested, crtc's dpms should be on */
157 if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
158 DRM_ERROR("failed framebuffer changing request.\n");
162 crtc_w = fb->width - x;
163 crtc_h = fb->height - y;
165 ret = exynos_plane_mode_set(crtc->primary, crtc, fb, 0, 0,
166 crtc_w, crtc_h, x, y, crtc_w, crtc_h);
170 exynos_drm_crtc_commit(crtc);
175 static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
176 struct drm_framebuffer *old_fb)
178 return exynos_drm_crtc_mode_set_commit(crtc, x, y, old_fb);
181 static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
183 struct drm_plane *plane;
186 exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
188 drm_for_each_legacy_plane(plane, &crtc->dev->mode_config.plane_list) {
189 if (plane->crtc != crtc)
192 ret = plane->funcs->disable_plane(plane);
194 DRM_ERROR("Failed to disable plane %d\n", ret);
198 static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
199 .dpms = exynos_drm_crtc_dpms,
200 .prepare = exynos_drm_crtc_prepare,
201 .commit = exynos_drm_crtc_commit,
202 .mode_fixup = exynos_drm_crtc_mode_fixup,
203 .mode_set = exynos_drm_crtc_mode_set,
204 .mode_set_base = exynos_drm_crtc_mode_set_base,
205 .disable = exynos_drm_crtc_disable,
208 static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
209 struct drm_framebuffer *fb,
210 struct drm_pending_vblank_event *event,
211 uint32_t page_flip_flags)
213 struct drm_device *dev = crtc->dev;
214 struct exynos_drm_private *dev_priv = dev->dev_private;
215 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
216 struct drm_framebuffer *old_fb = crtc->primary->fb;
219 /* when the page flip is requested, crtc's dpms should be on */
220 if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
221 DRM_ERROR("failed page flip request.\n");
225 mutex_lock(&dev->struct_mutex);
229 * the pipe from user always is 0 so we can set pipe number
230 * of current owner to event.
232 event->pipe = exynos_crtc->pipe;
234 ret = drm_vblank_get(dev, exynos_crtc->pipe);
236 DRM_DEBUG("failed to acquire vblank counter\n");
241 spin_lock_irq(&dev->event_lock);
242 list_add_tail(&event->base.link,
243 &dev_priv->pageflip_event_list);
244 atomic_set(&exynos_crtc->pending_flip, 1);
245 spin_unlock_irq(&dev->event_lock);
247 crtc->primary->fb = fb;
248 ret = exynos_drm_crtc_mode_set_commit(crtc, crtc->x, crtc->y,
251 crtc->primary->fb = old_fb;
253 spin_lock_irq(&dev->event_lock);
254 drm_vblank_put(dev, exynos_crtc->pipe);
255 list_del(&event->base.link);
256 atomic_set(&exynos_crtc->pending_flip, 0);
257 spin_unlock_irq(&dev->event_lock);
263 mutex_unlock(&dev->struct_mutex);
267 static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
269 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
270 struct exynos_drm_private *private = crtc->dev->dev_private;
272 private->crtc[exynos_crtc->pipe] = NULL;
274 drm_crtc_cleanup(crtc);
278 static int exynos_drm_crtc_set_property(struct drm_crtc *crtc,
279 struct drm_property *property,
282 struct drm_device *dev = crtc->dev;
283 struct exynos_drm_private *dev_priv = dev->dev_private;
284 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
286 if (property == dev_priv->crtc_mode_property) {
287 enum exynos_crtc_mode mode = val;
289 if (mode == exynos_crtc->mode)
292 exynos_crtc->mode = mode;
295 case CRTC_MODE_NORMAL:
296 exynos_drm_crtc_commit(crtc);
298 case CRTC_MODE_BLANK:
299 exynos_plane_dpms(crtc->primary, DRM_MODE_DPMS_OFF);
311 static struct drm_crtc_funcs exynos_crtc_funcs = {
312 .set_config = drm_crtc_helper_set_config,
313 .page_flip = exynos_drm_crtc_page_flip,
314 .destroy = exynos_drm_crtc_destroy,
315 .set_property = exynos_drm_crtc_set_property,
318 static const struct drm_prop_enum_list mode_names[] = {
319 { CRTC_MODE_NORMAL, "normal" },
320 { CRTC_MODE_BLANK, "blank" },
323 static void exynos_drm_crtc_attach_mode_property(struct drm_crtc *crtc)
325 struct drm_device *dev = crtc->dev;
326 struct exynos_drm_private *dev_priv = dev->dev_private;
327 struct drm_property *prop;
329 prop = dev_priv->crtc_mode_property;
331 prop = drm_property_create_enum(dev, 0, "mode", mode_names,
332 ARRAY_SIZE(mode_names));
336 dev_priv->crtc_mode_property = prop;
339 drm_object_attach_property(&crtc->base, prop, 0);
342 int exynos_drm_crtc_create(struct exynos_drm_manager *manager)
344 struct exynos_drm_crtc *exynos_crtc;
345 struct drm_plane *plane;
346 struct exynos_drm_private *private = manager->drm_dev->dev_private;
347 struct drm_crtc *crtc;
350 exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
354 init_waitqueue_head(&exynos_crtc->pending_flip_queue);
355 atomic_set(&exynos_crtc->pending_flip, 0);
357 exynos_crtc->dpms = DRM_MODE_DPMS_OFF;
358 exynos_crtc->manager = manager;
359 exynos_crtc->pipe = manager->pipe;
360 plane = exynos_plane_init(manager->drm_dev, 1 << manager->pipe,
361 DRM_PLANE_TYPE_PRIMARY);
363 ret = PTR_ERR(plane);
367 manager->crtc = &exynos_crtc->drm_crtc;
368 crtc = &exynos_crtc->drm_crtc;
370 private->crtc[manager->pipe] = crtc;
372 ret = drm_crtc_init_with_planes(manager->drm_dev, crtc, plane, NULL,
377 drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs);
379 exynos_drm_crtc_attach_mode_property(crtc);
384 plane->funcs->destroy(plane);
390 int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
392 struct exynos_drm_private *private = dev->dev_private;
393 struct exynos_drm_crtc *exynos_crtc =
394 to_exynos_crtc(private->crtc[pipe]);
395 struct exynos_drm_manager *manager = exynos_crtc->manager;
397 if (exynos_crtc->dpms != DRM_MODE_DPMS_ON)
400 if (manager->ops->enable_vblank)
401 manager->ops->enable_vblank(manager);
406 void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int pipe)
408 struct exynos_drm_private *private = dev->dev_private;
409 struct exynos_drm_crtc *exynos_crtc =
410 to_exynos_crtc(private->crtc[pipe]);
411 struct exynos_drm_manager *manager = exynos_crtc->manager;
413 if (exynos_crtc->dpms != DRM_MODE_DPMS_ON)
416 if (manager->ops->disable_vblank)
417 manager->ops->disable_vblank(manager);
420 void exynos_drm_crtc_finish_pageflip(struct drm_device *dev, int pipe)
422 struct exynos_drm_private *dev_priv = dev->dev_private;
423 struct drm_pending_vblank_event *e, *t;
424 struct drm_crtc *drm_crtc = dev_priv->crtc[pipe];
425 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(drm_crtc);
428 spin_lock_irqsave(&dev->event_lock, flags);
430 list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list,
432 /* if event's pipe isn't same as crtc then ignore it. */
436 list_del(&e->base.link);
437 drm_send_vblank_event(dev, -1, e);
438 drm_vblank_put(dev, pipe);
439 atomic_set(&exynos_crtc->pending_flip, 0);
440 wake_up(&exynos_crtc->pending_flip_queue);
443 spin_unlock_irqrestore(&dev->event_lock, flags);
446 void exynos_drm_crtc_plane_mode_set(struct drm_crtc *crtc,
447 struct exynos_drm_overlay *overlay)
449 struct exynos_drm_manager *manager = to_exynos_crtc(crtc)->manager;
451 if (manager->ops->win_mode_set)
452 manager->ops->win_mode_set(manager, overlay);
455 void exynos_drm_crtc_plane_commit(struct drm_crtc *crtc, int zpos)
457 struct exynos_drm_manager *manager = to_exynos_crtc(crtc)->manager;
459 if (manager->ops->win_commit)
460 manager->ops->win_commit(manager, zpos);
463 void exynos_drm_crtc_plane_enable(struct drm_crtc *crtc, int zpos)
465 struct exynos_drm_manager *manager = to_exynos_crtc(crtc)->manager;
467 if (manager->ops->win_enable)
468 manager->ops->win_enable(manager, zpos);
471 void exynos_drm_crtc_plane_disable(struct drm_crtc *crtc, int zpos)
473 struct exynos_drm_manager *manager = to_exynos_crtc(crtc)->manager;
475 if (manager->ops->win_disable)
476 manager->ops->win_disable(manager, zpos);
479 void exynos_drm_crtc_complete_scanout(struct drm_framebuffer *fb)
481 struct exynos_drm_manager *manager;
482 struct drm_device *dev = fb->dev;
483 struct drm_crtc *crtc;
486 * make sure that overlay data are updated to real hardware
489 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
490 manager = to_exynos_crtc(crtc)->manager;
493 * wait for vblank interrupt
494 * - this makes sure that overlay data are updated to
497 if (manager->ops->wait_for_vblank)
498 manager->ops->wait_for_vblank(manager);
502 int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
503 unsigned int out_type)
505 struct drm_crtc *crtc;
507 list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) {
508 struct exynos_drm_crtc *exynos_crtc;
510 exynos_crtc = to_exynos_crtc(crtc);
511 if (exynos_crtc->manager->type == out_type)
512 return exynos_crtc->manager->pipe;
518 void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
520 struct exynos_drm_manager *manager = to_exynos_crtc(crtc)->manager;
522 if (manager->ops->te_handler)
523 manager->ops->te_handler(manager);