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 static void exynos_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
25 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
27 DRM_DEBUG_KMS("crtc[%d] mode[%d]\n", crtc->base.id, mode);
29 if (exynos_crtc->dpms == mode) {
30 DRM_DEBUG_KMS("desired dpms mode is same as previous one.\n");
34 if (mode > DRM_MODE_DPMS_ON) {
35 /* wait for the completion of page flip. */
36 if (!wait_event_timeout(exynos_crtc->pending_flip_queue,
37 !atomic_read(&exynos_crtc->pending_flip),
39 atomic_set(&exynos_crtc->pending_flip, 0);
40 drm_crtc_vblank_off(crtc);
43 if (exynos_crtc->ops->dpms)
44 exynos_crtc->ops->dpms(exynos_crtc, mode);
46 exynos_crtc->dpms = mode;
48 if (mode == DRM_MODE_DPMS_ON)
49 drm_crtc_vblank_on(crtc);
52 static void exynos_drm_crtc_prepare(struct drm_crtc *crtc)
54 /* drm framework doesn't check NULL. */
57 static void exynos_drm_crtc_commit(struct drm_crtc *crtc)
59 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
60 struct exynos_drm_plane *exynos_plane = to_exynos_plane(crtc->primary);
62 exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_ON);
64 if (exynos_crtc->ops->win_commit)
65 exynos_crtc->ops->win_commit(exynos_crtc, exynos_plane->zpos);
67 if (exynos_crtc->ops->commit)
68 exynos_crtc->ops->commit(exynos_crtc);
72 exynos_drm_crtc_mode_fixup(struct drm_crtc *crtc,
73 const struct drm_display_mode *mode,
74 struct drm_display_mode *adjusted_mode)
76 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
78 if (exynos_crtc->ops->mode_fixup)
79 return exynos_crtc->ops->mode_fixup(exynos_crtc, mode,
86 exynos_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
87 struct drm_display_mode *adjusted_mode, int x, int y,
88 struct drm_framebuffer *old_fb)
90 struct drm_framebuffer *fb = crtc->primary->fb;
96 * copy the mode data adjusted by mode_fixup() into crtc->mode
97 * so that hardware can be seet to proper mode.
99 memcpy(&crtc->mode, adjusted_mode, sizeof(*adjusted_mode));
101 ret = exynos_check_plane(crtc->primary, fb);
105 crtc_w = fb->width - x;
106 crtc_h = fb->height - y;
107 exynos_plane_mode_set(crtc->primary, crtc, fb, 0, 0,
108 crtc_w, crtc_h, x, y, crtc_w, crtc_h);
113 static int exynos_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
114 struct drm_framebuffer *old_fb)
116 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
117 struct drm_framebuffer *fb = crtc->primary->fb;
121 /* when framebuffer changing is requested, crtc's dpms should be on */
122 if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
123 DRM_ERROR("failed framebuffer changing request.\n");
127 crtc_w = fb->width - x;
128 crtc_h = fb->height - y;
130 return exynos_update_plane(crtc->primary, crtc, fb, 0, 0,
131 crtc_w, crtc_h, x, y, crtc_w, crtc_h);
134 static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
136 struct drm_plane *plane;
139 exynos_drm_crtc_dpms(crtc, DRM_MODE_DPMS_OFF);
141 drm_for_each_legacy_plane(plane, &crtc->dev->mode_config.plane_list) {
142 if (plane->crtc != crtc)
145 ret = plane->funcs->disable_plane(plane);
147 DRM_ERROR("Failed to disable plane %d\n", ret);
151 static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
152 .dpms = exynos_drm_crtc_dpms,
153 .prepare = exynos_drm_crtc_prepare,
154 .commit = exynos_drm_crtc_commit,
155 .mode_fixup = exynos_drm_crtc_mode_fixup,
156 .mode_set = exynos_drm_crtc_mode_set,
157 .mode_set_base = exynos_drm_crtc_mode_set_base,
158 .disable = exynos_drm_crtc_disable,
161 static int exynos_drm_crtc_page_flip(struct drm_crtc *crtc,
162 struct drm_framebuffer *fb,
163 struct drm_pending_vblank_event *event,
164 uint32_t page_flip_flags)
166 struct drm_device *dev = crtc->dev;
167 struct exynos_drm_private *dev_priv = dev->dev_private;
168 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
169 struct drm_framebuffer *old_fb = crtc->primary->fb;
170 unsigned int crtc_w, crtc_h;
173 /* when the page flip is requested, crtc's dpms should be on */
174 if (exynos_crtc->dpms > DRM_MODE_DPMS_ON) {
175 DRM_ERROR("failed page flip request.\n");
179 mutex_lock(&dev->struct_mutex);
183 * the pipe from user always is 0 so we can set pipe number
184 * of current owner to event.
186 event->pipe = exynos_crtc->pipe;
188 ret = drm_vblank_get(dev, exynos_crtc->pipe);
190 DRM_DEBUG("failed to acquire vblank counter\n");
195 spin_lock_irq(&dev->event_lock);
196 list_add_tail(&event->base.link,
197 &dev_priv->pageflip_event_list);
198 atomic_set(&exynos_crtc->pending_flip, 1);
199 spin_unlock_irq(&dev->event_lock);
201 crtc->primary->fb = fb;
202 crtc_w = fb->width - crtc->x;
203 crtc_h = fb->height - crtc->y;
204 ret = exynos_update_plane(crtc->primary, crtc, fb, 0, 0,
205 crtc_w, crtc_h, crtc->x, crtc->y,
208 crtc->primary->fb = old_fb;
210 spin_lock_irq(&dev->event_lock);
211 drm_vblank_put(dev, exynos_crtc->pipe);
212 list_del(&event->base.link);
213 atomic_set(&exynos_crtc->pending_flip, 0);
214 spin_unlock_irq(&dev->event_lock);
220 mutex_unlock(&dev->struct_mutex);
224 static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
226 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
227 struct exynos_drm_private *private = crtc->dev->dev_private;
229 private->crtc[exynos_crtc->pipe] = NULL;
231 drm_crtc_cleanup(crtc);
235 static struct drm_crtc_funcs exynos_crtc_funcs = {
236 .set_config = drm_crtc_helper_set_config,
237 .page_flip = exynos_drm_crtc_page_flip,
238 .destroy = exynos_drm_crtc_destroy,
241 struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
243 enum exynos_drm_output_type type,
244 struct exynos_drm_crtc_ops *ops,
247 struct exynos_drm_crtc *exynos_crtc;
248 struct drm_plane *plane;
249 struct exynos_drm_private *private = drm_dev->dev_private;
250 struct drm_crtc *crtc;
253 exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
255 return ERR_PTR(-ENOMEM);
257 init_waitqueue_head(&exynos_crtc->pending_flip_queue);
258 atomic_set(&exynos_crtc->pending_flip, 0);
260 exynos_crtc->dpms = DRM_MODE_DPMS_OFF;
261 exynos_crtc->pipe = pipe;
262 exynos_crtc->type = type;
263 exynos_crtc->ops = ops;
264 exynos_crtc->ctx = ctx;
265 plane = exynos_plane_init(drm_dev, 1 << pipe,
266 DRM_PLANE_TYPE_PRIMARY);
268 ret = PTR_ERR(plane);
272 crtc = &exynos_crtc->base;
274 private->crtc[pipe] = crtc;
276 ret = drm_crtc_init_with_planes(drm_dev, crtc, plane, NULL,
281 drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs);
286 plane->funcs->destroy(plane);
292 int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
294 struct exynos_drm_private *private = dev->dev_private;
295 struct exynos_drm_crtc *exynos_crtc =
296 to_exynos_crtc(private->crtc[pipe]);
298 if (exynos_crtc->dpms != DRM_MODE_DPMS_ON)
301 if (exynos_crtc->ops->enable_vblank)
302 exynos_crtc->ops->enable_vblank(exynos_crtc);
307 void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int pipe)
309 struct exynos_drm_private *private = dev->dev_private;
310 struct exynos_drm_crtc *exynos_crtc =
311 to_exynos_crtc(private->crtc[pipe]);
313 if (exynos_crtc->dpms != DRM_MODE_DPMS_ON)
316 if (exynos_crtc->ops->disable_vblank)
317 exynos_crtc->ops->disable_vblank(exynos_crtc);
320 void exynos_drm_crtc_finish_pageflip(struct drm_device *dev, int pipe)
322 struct exynos_drm_private *dev_priv = dev->dev_private;
323 struct drm_pending_vblank_event *e, *t;
324 struct drm_crtc *drm_crtc = dev_priv->crtc[pipe];
325 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(drm_crtc);
328 spin_lock_irqsave(&dev->event_lock, flags);
330 list_for_each_entry_safe(e, t, &dev_priv->pageflip_event_list,
332 /* if event's pipe isn't same as crtc then ignore it. */
336 list_del(&e->base.link);
337 drm_send_vblank_event(dev, -1, e);
338 drm_vblank_put(dev, pipe);
339 atomic_set(&exynos_crtc->pending_flip, 0);
340 wake_up(&exynos_crtc->pending_flip_queue);
343 spin_unlock_irqrestore(&dev->event_lock, flags);
346 void exynos_drm_crtc_complete_scanout(struct drm_framebuffer *fb)
348 struct exynos_drm_crtc *exynos_crtc;
349 struct drm_device *dev = fb->dev;
350 struct drm_crtc *crtc;
353 * make sure that overlay data are updated to real hardware
356 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
357 exynos_crtc = to_exynos_crtc(crtc);
360 * wait for vblank interrupt
361 * - this makes sure that overlay data are updated to
364 if (exynos_crtc->ops->wait_for_vblank)
365 exynos_crtc->ops->wait_for_vblank(exynos_crtc);
369 int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
370 unsigned int out_type)
372 struct drm_crtc *crtc;
374 list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) {
375 struct exynos_drm_crtc *exynos_crtc;
377 exynos_crtc = to_exynos_crtc(crtc);
378 if (exynos_crtc->type == out_type)
379 return exynos_crtc->pipe;
385 void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
387 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
389 if (exynos_crtc->ops->te_handler)
390 exynos_crtc->ops->te_handler(exynos_crtc);