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);
27 DRM_DEBUG_DRIVER("\n");
29 mixer->status = STI_MIXER_READY;
31 drm_crtc_vblank_on(crtc);
34 static void sti_crtc_disabling(struct drm_crtc *crtc)
36 struct sti_mixer *mixer = to_sti_mixer(crtc);
38 DRM_DEBUG_DRIVER("\n");
40 mixer->status = STI_MIXER_DISABLING;
44 sti_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode)
46 struct sti_mixer *mixer = to_sti_mixer(crtc);
47 struct device *dev = mixer->dev;
48 struct sti_compositor *compo = dev_get_drvdata(dev);
49 struct clk *compo_clk, *pix_clk;
50 int rate = mode->clock * 1000;
52 DRM_DEBUG_KMS("CRTC:%d (%s) mode:%d (%s)\n",
53 crtc->base.id, sti_mixer_to_str(mixer),
54 mode->base.id, mode->name);
56 DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
57 mode->vrefresh, mode->clock,
59 mode->hsync_start, mode->hsync_end,
62 mode->vsync_start, mode->vsync_end,
63 mode->vtotal, mode->type, mode->flags);
65 if (mixer->id == STI_MIXER_MAIN) {
66 compo_clk = compo->clk_compo_main;
67 pix_clk = compo->clk_pix_main;
69 compo_clk = compo->clk_compo_aux;
70 pix_clk = compo->clk_pix_aux;
73 /* Prepare and enable the compo IP clock */
74 if (clk_prepare_enable(compo_clk)) {
75 DRM_INFO("Failed to prepare/enable compositor clk\n");
79 /* Set rate and prepare/enable pixel clock */
80 if (clk_set_rate(pix_clk, rate) < 0) {
81 DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate);
84 if (clk_prepare_enable(pix_clk)) {
85 DRM_ERROR("Failed to prepare/enable pix clk\n");
89 sti_vtg_set_config(mixer->id == STI_MIXER_MAIN ?
90 compo->vtg_main : compo->vtg_aux, &crtc->mode);
92 if (sti_mixer_active_video_area(mixer, &crtc->mode)) {
93 DRM_ERROR("Can't set active video area\n");
100 clk_disable_unprepare(pix_clk);
102 clk_disable_unprepare(compo_clk);
107 static void sti_crtc_disable(struct drm_crtc *crtc)
109 struct sti_mixer *mixer = to_sti_mixer(crtc);
110 struct device *dev = mixer->dev;
111 struct sti_compositor *compo = dev_get_drvdata(dev);
113 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));
115 /* Disable Background */
116 sti_mixer_set_background_status(mixer, false);
118 drm_crtc_vblank_off(crtc);
120 /* Disable pixel clock and compo IP clocks */
121 if (mixer->id == STI_MIXER_MAIN) {
122 clk_disable_unprepare(compo->clk_pix_main);
123 clk_disable_unprepare(compo->clk_compo_main);
125 clk_disable_unprepare(compo->clk_pix_aux);
126 clk_disable_unprepare(compo->clk_compo_aux);
129 mixer->status = STI_MIXER_DISABLED;
133 sti_crtc_mode_set_nofb(struct drm_crtc *crtc)
135 sti_crtc_mode_set(crtc, &crtc->state->adjusted_mode);
138 static void sti_crtc_atomic_begin(struct drm_crtc *crtc,
139 struct drm_crtc_state *old_crtc_state)
141 struct sti_mixer *mixer = to_sti_mixer(crtc);
143 if (crtc->state->event) {
144 crtc->state->event->pipe = drm_crtc_index(crtc);
146 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
148 mixer->pending_event = crtc->state->event;
149 crtc->state->event = NULL;
153 static void sti_crtc_atomic_flush(struct drm_crtc *crtc,
154 struct drm_crtc_state *old_crtc_state)
156 struct drm_device *drm_dev = crtc->dev;
157 struct sti_mixer *mixer = to_sti_mixer(crtc);
158 struct sti_compositor *compo = dev_get_drvdata(mixer->dev);
161 DRM_DEBUG_DRIVER("\n");
163 /* perform plane actions */
164 list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
165 struct sti_plane *plane = to_sti_plane(p);
167 switch (plane->status) {
168 case STI_PLANE_UPDATED:
169 /* update planes tag as updated */
170 DRM_DEBUG_DRIVER("update plane %s\n",
171 sti_plane_to_str(plane));
173 if (sti_mixer_set_plane_depth(mixer, plane)) {
174 DRM_ERROR("Cannot set plane %s depth\n",
175 sti_plane_to_str(plane));
179 if (sti_mixer_set_plane_status(mixer, plane, true)) {
180 DRM_ERROR("Cannot enable plane %s at mixer\n",
181 sti_plane_to_str(plane));
185 /* if plane is HQVDP_0 then commit the vid[0] */
186 if (plane->desc == STI_HQVDP_0)
187 sti_vid_commit(compo->vid[0], p->state);
189 plane->status = STI_PLANE_READY;
192 case STI_PLANE_DISABLING:
193 /* disabling sequence for planes tag as disabling */
194 DRM_DEBUG_DRIVER("disable plane %s from mixer\n",
195 sti_plane_to_str(plane));
197 if (sti_mixer_set_plane_status(mixer, plane, false)) {
198 DRM_ERROR("Cannot disable plane %s at mixer\n",
199 sti_plane_to_str(plane));
203 if (plane->desc == STI_CURSOR)
204 /* tag plane status for disabled */
205 plane->status = STI_PLANE_DISABLED;
207 /* tag plane status for flushing */
208 plane->status = STI_PLANE_FLUSHING;
210 /* if plane is HQVDP_0 then disable the vid[0] */
211 if (plane->desc == STI_HQVDP_0)
212 sti_vid_disable(compo->vid[0]);
216 /* Other status case are not handled */
222 static const struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
223 .enable = sti_crtc_enable,
224 .disable = sti_crtc_disabling,
225 .mode_set_nofb = sti_crtc_mode_set_nofb,
226 .atomic_begin = sti_crtc_atomic_begin,
227 .atomic_flush = sti_crtc_atomic_flush,
230 static void sti_crtc_destroy(struct drm_crtc *crtc)
233 drm_crtc_cleanup(crtc);
236 static int sti_crtc_set_property(struct drm_crtc *crtc,
237 struct drm_property *property,
244 int sti_crtc_vblank_cb(struct notifier_block *nb,
245 unsigned long event, void *data)
247 struct sti_compositor *compo =
248 container_of(nb, struct sti_compositor, vtg_vblank_nb);
249 struct drm_crtc *crtc = data;
250 struct sti_mixer *mixer;
252 struct sti_private *priv;
255 priv = crtc->dev->dev_private;
256 pipe = drm_crtc_index(crtc);
257 mixer = compo->mixer[pipe];
259 if ((event != VTG_TOP_FIELD_EVENT) &&
260 (event != VTG_BOTTOM_FIELD_EVENT)) {
261 DRM_ERROR("unknown event: %lu\n", event);
265 drm_crtc_handle_vblank(crtc);
267 spin_lock_irqsave(&crtc->dev->event_lock, flags);
268 if (mixer->pending_event) {
269 drm_crtc_send_vblank_event(crtc, mixer->pending_event);
270 drm_crtc_vblank_put(crtc);
271 mixer->pending_event = NULL;
273 spin_unlock_irqrestore(&crtc->dev->event_lock, flags);
275 if (mixer->status == STI_MIXER_DISABLING) {
278 /* Disable mixer only if all overlay planes (GDP and VDP)
280 list_for_each_entry(p, &crtc->dev->mode_config.plane_list,
282 struct sti_plane *plane = to_sti_plane(p);
284 if ((plane->desc & STI_PLANE_TYPE_MASK) <= STI_VDP)
285 if (plane->status != STI_PLANE_DISABLED)
288 sti_crtc_disable(crtc);
294 int sti_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe)
296 struct sti_private *dev_priv = dev->dev_private;
297 struct sti_compositor *compo = dev_priv->compo;
298 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
299 struct drm_crtc *crtc = &compo->mixer[pipe]->drm_crtc;
301 DRM_DEBUG_DRIVER("\n");
303 if (sti_vtg_register_client(pipe == STI_MIXER_MAIN ?
304 compo->vtg_main : compo->vtg_aux,
305 vtg_vblank_nb, crtc)) {
306 DRM_ERROR("Cannot register VTG notifier\n");
313 void sti_crtc_disable_vblank(struct drm_device *drm_dev, unsigned int pipe)
315 struct sti_private *priv = drm_dev->dev_private;
316 struct sti_compositor *compo = priv->compo;
317 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
318 struct drm_crtc *crtc = &compo->mixer[pipe]->drm_crtc;
320 DRM_DEBUG_DRIVER("\n");
322 if (sti_vtg_unregister_client(pipe == STI_MIXER_MAIN ?
323 compo->vtg_main : compo->vtg_aux, vtg_vblank_nb))
324 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
326 /* free the resources of the pending requests */
327 if (compo->mixer[pipe]->pending_event) {
328 drm_crtc_vblank_put(crtc);
329 compo->mixer[pipe]->pending_event = NULL;
333 static int sti_crtc_late_register(struct drm_crtc *crtc)
335 struct sti_mixer *mixer = to_sti_mixer(crtc);
336 struct sti_compositor *compo = dev_get_drvdata(mixer->dev);
338 if (drm_crtc_index(crtc) == 0)
339 return sti_compositor_debufs_init(compo, crtc->dev->primary);
344 static const struct drm_crtc_funcs sti_crtc_funcs = {
345 .set_config = drm_atomic_helper_set_config,
346 .page_flip = drm_atomic_helper_page_flip,
347 .destroy = sti_crtc_destroy,
348 .set_property = sti_crtc_set_property,
349 .reset = drm_atomic_helper_crtc_reset,
350 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
351 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
352 .late_register = sti_crtc_late_register,
355 bool sti_crtc_is_main(struct drm_crtc *crtc)
357 struct sti_mixer *mixer = to_sti_mixer(crtc);
359 if (mixer->id == STI_MIXER_MAIN)
365 int sti_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,
366 struct drm_plane *primary, struct drm_plane *cursor)
368 struct drm_crtc *crtc = &mixer->drm_crtc;
371 res = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
372 &sti_crtc_funcs, NULL);
374 DRM_ERROR("Can't initialze CRTC\n");
378 drm_crtc_helper_add(crtc, &sti_crtc_helper_funcs);
380 DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
381 crtc->base.id, sti_mixer_to_str(mixer));