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>
17 #include <drm/drm_atomic.h>
18 #include <drm/drm_atomic_helper.h>
20 #include "exynos_drm_crtc.h"
21 #include "exynos_drm_drv.h"
22 #include "exynos_drm_plane.h"
24 static void exynos_drm_crtc_enable(struct drm_crtc *crtc)
26 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
28 if (exynos_crtc->ops->enable)
29 exynos_crtc->ops->enable(exynos_crtc);
31 drm_crtc_vblank_on(crtc);
34 static void exynos_drm_crtc_disable(struct drm_crtc *crtc)
36 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
38 drm_crtc_vblank_off(crtc);
40 if (exynos_crtc->ops->disable)
41 exynos_crtc->ops->disable(exynos_crtc);
45 exynos_drm_crtc_mode_set_nofb(struct drm_crtc *crtc)
47 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
49 if (exynos_crtc->ops->commit)
50 exynos_crtc->ops->commit(exynos_crtc);
53 static void exynos_crtc_atomic_begin(struct drm_crtc *crtc,
54 struct drm_crtc_state *old_crtc_state)
56 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
57 struct drm_plane *plane;
59 exynos_crtc->event = crtc->state->event;
61 drm_atomic_crtc_for_each_plane(plane, crtc) {
62 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
64 if (exynos_crtc->ops->atomic_begin)
65 exynos_crtc->ops->atomic_begin(exynos_crtc,
70 static void exynos_crtc_atomic_flush(struct drm_crtc *crtc,
71 struct drm_crtc_state *old_crtc_state)
73 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
74 struct drm_plane *plane;
76 drm_atomic_crtc_for_each_plane(plane, crtc) {
77 struct exynos_drm_plane *exynos_plane = to_exynos_plane(plane);
79 if (exynos_crtc->ops->atomic_flush)
80 exynos_crtc->ops->atomic_flush(exynos_crtc,
85 static struct drm_crtc_helper_funcs exynos_crtc_helper_funcs = {
86 .enable = exynos_drm_crtc_enable,
87 .disable = exynos_drm_crtc_disable,
88 .mode_set_nofb = exynos_drm_crtc_mode_set_nofb,
89 .atomic_begin = exynos_crtc_atomic_begin,
90 .atomic_flush = exynos_crtc_atomic_flush,
93 static void exynos_drm_crtc_destroy(struct drm_crtc *crtc)
95 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
96 struct exynos_drm_private *private = crtc->dev->dev_private;
98 private->crtc[exynos_crtc->pipe] = NULL;
100 drm_crtc_cleanup(crtc);
104 static struct drm_crtc_funcs exynos_crtc_funcs = {
105 .set_config = drm_atomic_helper_set_config,
106 .page_flip = drm_atomic_helper_page_flip,
107 .destroy = exynos_drm_crtc_destroy,
108 .reset = drm_atomic_helper_crtc_reset,
109 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
110 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
113 struct exynos_drm_crtc *exynos_drm_crtc_create(struct drm_device *drm_dev,
114 struct drm_plane *plane,
116 enum exynos_drm_output_type type,
117 const struct exynos_drm_crtc_ops *ops,
120 struct exynos_drm_crtc *exynos_crtc;
121 struct exynos_drm_private *private = drm_dev->dev_private;
122 struct drm_crtc *crtc;
125 exynos_crtc = kzalloc(sizeof(*exynos_crtc), GFP_KERNEL);
127 return ERR_PTR(-ENOMEM);
129 exynos_crtc->pipe = pipe;
130 exynos_crtc->type = type;
131 exynos_crtc->ops = ops;
132 exynos_crtc->ctx = ctx;
134 init_waitqueue_head(&exynos_crtc->wait_update);
136 crtc = &exynos_crtc->base;
138 private->crtc[pipe] = crtc;
140 ret = drm_crtc_init_with_planes(drm_dev, crtc, plane, NULL,
145 drm_crtc_helper_add(crtc, &exynos_crtc_helper_funcs);
150 plane->funcs->destroy(plane);
155 int exynos_drm_crtc_enable_vblank(struct drm_device *dev, int pipe)
157 struct exynos_drm_private *private = dev->dev_private;
158 struct exynos_drm_crtc *exynos_crtc =
159 to_exynos_crtc(private->crtc[pipe]);
161 if (exynos_crtc->ops->enable_vblank)
162 return exynos_crtc->ops->enable_vblank(exynos_crtc);
167 void exynos_drm_crtc_disable_vblank(struct drm_device *dev, int pipe)
169 struct exynos_drm_private *private = dev->dev_private;
170 struct exynos_drm_crtc *exynos_crtc =
171 to_exynos_crtc(private->crtc[pipe]);
173 if (exynos_crtc->ops->disable_vblank)
174 exynos_crtc->ops->disable_vblank(exynos_crtc);
177 void exynos_drm_crtc_wait_pending_update(struct exynos_drm_crtc *exynos_crtc)
179 wait_event_timeout(exynos_crtc->wait_update,
180 (atomic_read(&exynos_crtc->pending_update) == 0),
181 msecs_to_jiffies(50));
184 void exynos_drm_crtc_finish_update(struct exynos_drm_crtc *exynos_crtc,
185 struct exynos_drm_plane *exynos_plane)
187 struct drm_crtc *crtc = &exynos_crtc->base;
190 exynos_plane->pending_fb = NULL;
192 if (atomic_dec_and_test(&exynos_crtc->pending_update))
193 wake_up(&exynos_crtc->wait_update);
195 spin_lock_irqsave(&crtc->dev->event_lock, flags);
196 if (exynos_crtc->event)
197 drm_crtc_send_vblank_event(crtc, exynos_crtc->event);
199 exynos_crtc->event = NULL;
200 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
203 void exynos_drm_crtc_complete_scanout(struct drm_framebuffer *fb)
205 struct exynos_drm_crtc *exynos_crtc;
206 struct drm_device *dev = fb->dev;
207 struct drm_crtc *crtc;
210 * make sure that overlay data are updated to real hardware
213 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
214 exynos_crtc = to_exynos_crtc(crtc);
217 * wait for vblank interrupt
218 * - this makes sure that overlay data are updated to
221 if (exynos_crtc->ops->wait_for_vblank)
222 exynos_crtc->ops->wait_for_vblank(exynos_crtc);
226 int exynos_drm_crtc_get_pipe_from_type(struct drm_device *drm_dev,
227 enum exynos_drm_output_type out_type)
229 struct drm_crtc *crtc;
231 list_for_each_entry(crtc, &drm_dev->mode_config.crtc_list, head) {
232 struct exynos_drm_crtc *exynos_crtc;
234 exynos_crtc = to_exynos_crtc(crtc);
235 if (exynos_crtc->type == out_type)
236 return exynos_crtc->pipe;
242 void exynos_drm_crtc_te_handler(struct drm_crtc *crtc)
244 struct exynos_drm_crtc *exynos_crtc = to_exynos_crtc(crtc);
246 if (exynos_crtc->ops->te_handler)
247 exynos_crtc->ops->te_handler(exynos_crtc);