2 * Copyright (C) STMicroelectronics SA 2014
3 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
4 * Fabien Dessenne <fabien.dessenne@st.com>
5 * for STMicroelectronics.
6 * License terms: GNU General Public License (GPL), version 2
12 #include <drm/drm_atomic.h>
13 #include <drm/drm_atomic_helper.h>
14 #include <drm/drm_crtc_helper.h>
15 #include <drm/drm_plane_helper.h>
17 #include "sti_compositor.h"
23 static void sti_crtc_enable(struct drm_crtc *crtc)
25 struct sti_mixer *mixer = to_sti_mixer(crtc);
26 struct device *dev = mixer->dev;
27 struct sti_compositor *compo = dev_get_drvdata(dev);
29 DRM_DEBUG_DRIVER("\n");
31 mixer->status = STI_MIXER_READY;
33 /* Prepare and enable the compo IP clock */
34 if (mixer->id == STI_MIXER_MAIN) {
35 if (clk_prepare_enable(compo->clk_compo_main))
36 DRM_INFO("Failed to prepare/enable compo_main clk\n");
38 if (clk_prepare_enable(compo->clk_compo_aux))
39 DRM_INFO("Failed to prepare/enable compo_aux clk\n");
42 drm_crtc_vblank_on(crtc);
45 static void sti_crtc_disabling(struct drm_crtc *crtc)
47 struct sti_mixer *mixer = to_sti_mixer(crtc);
49 DRM_DEBUG_DRIVER("\n");
51 mixer->status = STI_MIXER_DISABLING;
55 sti_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode)
57 struct sti_mixer *mixer = to_sti_mixer(crtc);
58 struct device *dev = mixer->dev;
59 struct sti_compositor *compo = dev_get_drvdata(dev);
61 int rate = mode->clock * 1000;
64 DRM_DEBUG_KMS("CRTC:%d (%s) mode:%d (%s)\n",
65 crtc->base.id, sti_mixer_to_str(mixer),
66 mode->base.id, mode->name);
68 DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
69 mode->vrefresh, mode->clock,
71 mode->hsync_start, mode->hsync_end,
74 mode->vsync_start, mode->vsync_end,
75 mode->vtotal, mode->type, mode->flags);
77 /* Set rate and prepare/enable pixel clock */
78 if (mixer->id == STI_MIXER_MAIN)
79 clk = compo->clk_pix_main;
81 clk = compo->clk_pix_aux;
83 res = clk_set_rate(clk, rate);
85 DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate);
88 if (clk_prepare_enable(clk)) {
89 DRM_ERROR("Failed to prepare/enable pix clk\n");
93 sti_vtg_set_config(mixer->id == STI_MIXER_MAIN ?
94 compo->vtg_main : compo->vtg_aux, &crtc->mode);
96 res = sti_mixer_active_video_area(mixer, &crtc->mode);
98 DRM_ERROR("Can't set active video area\n");
105 static void sti_crtc_disable(struct drm_crtc *crtc)
107 struct sti_mixer *mixer = to_sti_mixer(crtc);
108 struct device *dev = mixer->dev;
109 struct sti_compositor *compo = dev_get_drvdata(dev);
111 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));
113 /* Disable Background */
114 sti_mixer_set_background_status(mixer, false);
116 drm_crtc_vblank_off(crtc);
118 /* Disable pixel clock and compo IP clocks */
119 if (mixer->id == STI_MIXER_MAIN) {
120 clk_disable_unprepare(compo->clk_pix_main);
121 clk_disable_unprepare(compo->clk_compo_main);
123 clk_disable_unprepare(compo->clk_pix_aux);
124 clk_disable_unprepare(compo->clk_compo_aux);
127 mixer->status = STI_MIXER_DISABLED;
131 sti_crtc_mode_set_nofb(struct drm_crtc *crtc)
133 sti_crtc_enable(crtc);
134 sti_crtc_mode_set(crtc, &crtc->state->adjusted_mode);
137 static void sti_crtc_atomic_begin(struct drm_crtc *crtc,
138 struct drm_crtc_state *old_crtc_state)
140 struct sti_mixer *mixer = to_sti_mixer(crtc);
142 if (crtc->state->event) {
143 crtc->state->event->pipe = drm_crtc_index(crtc);
145 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
147 mixer->pending_event = crtc->state->event;
148 crtc->state->event = NULL;
152 static void sti_crtc_atomic_flush(struct drm_crtc *crtc,
153 struct drm_crtc_state *old_crtc_state)
155 struct drm_device *drm_dev = crtc->dev;
156 struct sti_mixer *mixer = to_sti_mixer(crtc);
157 struct sti_compositor *compo = dev_get_drvdata(mixer->dev);
160 DRM_DEBUG_DRIVER("\n");
162 /* perform plane actions */
163 list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
164 struct sti_plane *plane = to_sti_plane(p);
166 switch (plane->status) {
167 case STI_PLANE_UPDATED:
168 /* update planes tag as updated */
169 DRM_DEBUG_DRIVER("update plane %s\n",
170 sti_plane_to_str(plane));
172 if (sti_mixer_set_plane_depth(mixer, plane)) {
173 DRM_ERROR("Cannot set plane %s depth\n",
174 sti_plane_to_str(plane));
178 if (sti_mixer_set_plane_status(mixer, plane, true)) {
179 DRM_ERROR("Cannot enable plane %s at mixer\n",
180 sti_plane_to_str(plane));
184 /* if plane is HQVDP_0 then commit the vid[0] */
185 if (plane->desc == STI_HQVDP_0)
186 sti_vid_commit(compo->vid[0], p->state);
188 plane->status = STI_PLANE_READY;
191 case STI_PLANE_DISABLING:
192 /* disabling sequence for planes tag as disabling */
193 DRM_DEBUG_DRIVER("disable plane %s from mixer\n",
194 sti_plane_to_str(plane));
196 if (sti_mixer_set_plane_status(mixer, plane, false)) {
197 DRM_ERROR("Cannot disable plane %s at mixer\n",
198 sti_plane_to_str(plane));
202 if (plane->desc == STI_CURSOR)
203 /* tag plane status for disabled */
204 plane->status = STI_PLANE_DISABLED;
206 /* tag plane status for flushing */
207 plane->status = STI_PLANE_FLUSHING;
209 /* if plane is HQVDP_0 then disable the vid[0] */
210 if (plane->desc == STI_HQVDP_0)
211 sti_vid_disable(compo->vid[0]);
215 /* Other status case are not handled */
221 static const struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
222 .enable = sti_crtc_enable,
223 .disable = sti_crtc_disabling,
224 .mode_set = drm_helper_crtc_mode_set,
225 .mode_set_nofb = sti_crtc_mode_set_nofb,
226 .mode_set_base = drm_helper_crtc_mode_set_base,
227 .atomic_begin = sti_crtc_atomic_begin,
228 .atomic_flush = sti_crtc_atomic_flush,
231 static void sti_crtc_destroy(struct drm_crtc *crtc)
234 drm_crtc_cleanup(crtc);
237 static int sti_crtc_set_property(struct drm_crtc *crtc,
238 struct drm_property *property,
245 int sti_crtc_vblank_cb(struct notifier_block *nb,
246 unsigned long event, void *data)
248 struct sti_compositor *compo =
249 container_of(nb, struct sti_compositor, vtg_vblank_nb);
250 struct drm_crtc *crtc = data;
251 struct sti_mixer *mixer;
253 struct sti_private *priv;
256 priv = crtc->dev->dev_private;
257 pipe = drm_crtc_index(crtc);
258 mixer = compo->mixer[pipe];
260 if ((event != VTG_TOP_FIELD_EVENT) &&
261 (event != VTG_BOTTOM_FIELD_EVENT)) {
262 DRM_ERROR("unknown event: %lu\n", event);
266 drm_crtc_handle_vblank(crtc);
268 spin_lock_irqsave(&crtc->dev->event_lock, flags);
269 if (mixer->pending_event) {
270 drm_crtc_send_vblank_event(crtc, mixer->pending_event);
271 drm_crtc_vblank_put(crtc);
272 mixer->pending_event = NULL;
274 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
276 if (mixer->status == STI_MIXER_DISABLING) {
279 /* Disable mixer only if all overlay planes (GDP and VDP)
281 list_for_each_entry(p, &crtc->dev->mode_config.plane_list,
283 struct sti_plane *plane = to_sti_plane(p);
285 if ((plane->desc & STI_PLANE_TYPE_MASK) <= STI_VDP)
286 if (plane->status != STI_PLANE_DISABLED)
289 sti_crtc_disable(crtc);
295 int sti_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe)
297 struct sti_private *dev_priv = dev->dev_private;
298 struct sti_compositor *compo = dev_priv->compo;
299 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
300 struct drm_crtc *crtc = &compo->mixer[pipe]->drm_crtc;
302 DRM_DEBUG_DRIVER("\n");
304 if (sti_vtg_register_client(pipe == STI_MIXER_MAIN ?
305 compo->vtg_main : compo->vtg_aux,
306 vtg_vblank_nb, crtc)) {
307 DRM_ERROR("Cannot register VTG notifier\n");
314 void sti_crtc_disable_vblank(struct drm_device *drm_dev, unsigned int pipe)
316 struct sti_private *priv = drm_dev->dev_private;
317 struct sti_compositor *compo = priv->compo;
318 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
319 struct drm_crtc *crtc = &compo->mixer[pipe]->drm_crtc;
321 DRM_DEBUG_DRIVER("\n");
323 if (sti_vtg_unregister_client(pipe == STI_MIXER_MAIN ?
324 compo->vtg_main : compo->vtg_aux, vtg_vblank_nb))
325 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
327 /* free the resources of the pending requests */
328 if (compo->mixer[pipe]->pending_event) {
329 drm_crtc_vblank_put(crtc);
330 compo->mixer[pipe]->pending_event = NULL;
334 static const struct drm_crtc_funcs sti_crtc_funcs = {
335 .set_config = drm_atomic_helper_set_config,
336 .page_flip = drm_atomic_helper_page_flip,
337 .destroy = sti_crtc_destroy,
338 .set_property = sti_crtc_set_property,
339 .reset = drm_atomic_helper_crtc_reset,
340 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
341 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
344 bool sti_crtc_is_main(struct drm_crtc *crtc)
346 struct sti_mixer *mixer = to_sti_mixer(crtc);
348 if (mixer->id == STI_MIXER_MAIN)
354 int sti_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,
355 struct drm_plane *primary, struct drm_plane *cursor)
357 struct drm_crtc *crtc = &mixer->drm_crtc;
360 res = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
361 &sti_crtc_funcs, NULL);
363 DRM_ERROR("Can't initialze CRTC\n");
367 drm_crtc_helper_add(crtc, &sti_crtc_helper_funcs);
369 DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
370 crtc->base.id, sti_mixer_to_str(mixer));