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;
54 static bool sti_crtc_mode_fixup(struct drm_crtc *crtc,
55 const struct drm_display_mode *mode,
56 struct drm_display_mode *adjusted_mode)
58 /* accept the provided drm_display_mode, do not fix it up */
63 sti_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode)
65 struct sti_mixer *mixer = to_sti_mixer(crtc);
66 struct device *dev = mixer->dev;
67 struct sti_compositor *compo = dev_get_drvdata(dev);
69 int rate = mode->clock * 1000;
72 DRM_DEBUG_KMS("CRTC:%d (%s) mode:%d (%s)\n",
73 crtc->base.id, sti_mixer_to_str(mixer),
74 mode->base.id, mode->name);
76 DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
77 mode->vrefresh, mode->clock,
79 mode->hsync_start, mode->hsync_end,
82 mode->vsync_start, mode->vsync_end,
83 mode->vtotal, mode->type, mode->flags);
85 /* Set rate and prepare/enable pixel clock */
86 if (mixer->id == STI_MIXER_MAIN)
87 clk = compo->clk_pix_main;
89 clk = compo->clk_pix_aux;
91 res = clk_set_rate(clk, rate);
93 DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate);
96 if (clk_prepare_enable(clk)) {
97 DRM_ERROR("Failed to prepare/enable pix clk\n");
101 sti_vtg_set_config(mixer->id == STI_MIXER_MAIN ?
102 compo->vtg_main : compo->vtg_aux, &crtc->mode);
104 res = sti_mixer_active_video_area(mixer, &crtc->mode);
106 DRM_ERROR("Can't set active video area\n");
113 static void sti_crtc_disable(struct drm_crtc *crtc)
115 struct sti_mixer *mixer = to_sti_mixer(crtc);
116 struct device *dev = mixer->dev;
117 struct sti_compositor *compo = dev_get_drvdata(dev);
119 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));
121 /* Disable Background */
122 sti_mixer_set_background_status(mixer, false);
124 drm_crtc_vblank_off(crtc);
126 /* Disable pixel clock and compo IP clocks */
127 if (mixer->id == STI_MIXER_MAIN) {
128 clk_disable_unprepare(compo->clk_pix_main);
129 clk_disable_unprepare(compo->clk_compo_main);
131 clk_disable_unprepare(compo->clk_pix_aux);
132 clk_disable_unprepare(compo->clk_compo_aux);
135 mixer->status = STI_MIXER_DISABLED;
139 sti_crtc_mode_set_nofb(struct drm_crtc *crtc)
141 sti_crtc_enable(crtc);
142 sti_crtc_mode_set(crtc, &crtc->state->adjusted_mode);
145 static void sti_crtc_atomic_begin(struct drm_crtc *crtc,
146 struct drm_crtc_state *old_crtc_state)
148 struct sti_mixer *mixer = to_sti_mixer(crtc);
150 if (crtc->state->event) {
151 crtc->state->event->pipe = drm_crtc_index(crtc);
153 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
155 mixer->pending_event = crtc->state->event;
156 crtc->state->event = NULL;
160 static void sti_crtc_atomic_flush(struct drm_crtc *crtc,
161 struct drm_crtc_state *old_crtc_state)
163 struct drm_device *drm_dev = crtc->dev;
164 struct sti_mixer *mixer = to_sti_mixer(crtc);
165 struct sti_compositor *compo = dev_get_drvdata(mixer->dev);
168 DRM_DEBUG_DRIVER("\n");
170 /* perform plane actions */
171 list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
172 struct sti_plane *plane = to_sti_plane(p);
174 switch (plane->status) {
175 case STI_PLANE_UPDATED:
176 /* update planes tag as updated */
177 DRM_DEBUG_DRIVER("update plane %s\n",
178 sti_plane_to_str(plane));
180 if (sti_mixer_set_plane_depth(mixer, plane)) {
181 DRM_ERROR("Cannot set plane %s depth\n",
182 sti_plane_to_str(plane));
186 if (sti_mixer_set_plane_status(mixer, plane, true)) {
187 DRM_ERROR("Cannot enable plane %s at mixer\n",
188 sti_plane_to_str(plane));
192 /* if plane is HQVDP_0 then commit the vid[0] */
193 if (plane->desc == STI_HQVDP_0)
194 sti_vid_commit(compo->vid[0], p->state);
196 plane->status = STI_PLANE_READY;
199 case STI_PLANE_DISABLING:
200 /* disabling sequence for planes tag as disabling */
201 DRM_DEBUG_DRIVER("disable plane %s from mixer\n",
202 sti_plane_to_str(plane));
204 if (sti_mixer_set_plane_status(mixer, plane, false)) {
205 DRM_ERROR("Cannot disable plane %s at mixer\n",
206 sti_plane_to_str(plane));
210 if (plane->desc == STI_CURSOR)
211 /* tag plane status for disabled */
212 plane->status = STI_PLANE_DISABLED;
214 /* tag plane status for flushing */
215 plane->status = STI_PLANE_FLUSHING;
217 /* if plane is HQVDP_0 then disable the vid[0] */
218 if (plane->desc == STI_HQVDP_0)
219 sti_vid_disable(compo->vid[0]);
223 /* Other status case are not handled */
229 static struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
230 .enable = sti_crtc_enable,
231 .disable = sti_crtc_disabling,
232 .mode_fixup = sti_crtc_mode_fixup,
233 .mode_set = drm_helper_crtc_mode_set,
234 .mode_set_nofb = sti_crtc_mode_set_nofb,
235 .mode_set_base = drm_helper_crtc_mode_set_base,
236 .atomic_begin = sti_crtc_atomic_begin,
237 .atomic_flush = sti_crtc_atomic_flush,
240 static void sti_crtc_destroy(struct drm_crtc *crtc)
243 drm_crtc_cleanup(crtc);
246 static int sti_crtc_set_property(struct drm_crtc *crtc,
247 struct drm_property *property,
254 int sti_crtc_vblank_cb(struct notifier_block *nb,
255 unsigned long event, void *data)
257 struct drm_device *drm_dev;
258 struct sti_compositor *compo =
259 container_of(nb, struct sti_compositor, vtg_vblank_nb);
262 struct sti_private *priv;
264 drm_dev = compo->mixer[*crtc]->drm_crtc.dev;
265 priv = drm_dev->dev_private;
267 if ((event != VTG_TOP_FIELD_EVENT) &&
268 (event != VTG_BOTTOM_FIELD_EVENT)) {
269 DRM_ERROR("unknown event: %lu\n", event);
273 drm_handle_vblank(drm_dev, *crtc);
275 spin_lock_irqsave(&drm_dev->event_lock, flags);
276 if (compo->mixer[*crtc]->pending_event) {
277 drm_send_vblank_event(drm_dev, -1,
278 compo->mixer[*crtc]->pending_event);
279 drm_vblank_put(drm_dev, *crtc);
280 compo->mixer[*crtc]->pending_event = NULL;
282 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
284 if (compo->mixer[*crtc]->status == STI_MIXER_DISABLING) {
287 /* Disable mixer only if all overlay planes (GDP and VDP)
289 list_for_each_entry(p, &drm_dev->mode_config.plane_list, head) {
290 struct sti_plane *plane = to_sti_plane(p);
292 if ((plane->desc & STI_PLANE_TYPE_MASK) <= STI_VDP)
293 if (plane->status != STI_PLANE_DISABLED)
296 sti_crtc_disable(&compo->mixer[*crtc]->drm_crtc);
302 int sti_crtc_enable_vblank(struct drm_device *dev, unsigned int pipe)
304 struct sti_private *dev_priv = dev->dev_private;
305 struct sti_compositor *compo = dev_priv->compo;
306 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
308 DRM_DEBUG_DRIVER("\n");
310 if (sti_vtg_register_client(pipe == STI_MIXER_MAIN ?
311 compo->vtg_main : compo->vtg_aux,
312 vtg_vblank_nb, pipe)) {
313 DRM_ERROR("Cannot register VTG notifier\n");
319 EXPORT_SYMBOL(sti_crtc_enable_vblank);
321 void sti_crtc_disable_vblank(struct drm_device *drm_dev, unsigned int pipe)
323 struct sti_private *priv = drm_dev->dev_private;
324 struct sti_compositor *compo = priv->compo;
325 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
327 DRM_DEBUG_DRIVER("\n");
329 if (sti_vtg_unregister_client(pipe == STI_MIXER_MAIN ?
330 compo->vtg_main : compo->vtg_aux, vtg_vblank_nb))
331 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
333 /* free the resources of the pending requests */
334 if (compo->mixer[pipe]->pending_event) {
335 drm_vblank_put(drm_dev, pipe);
336 compo->mixer[pipe]->pending_event = NULL;
339 EXPORT_SYMBOL(sti_crtc_disable_vblank);
341 static struct drm_crtc_funcs sti_crtc_funcs = {
342 .set_config = drm_atomic_helper_set_config,
343 .page_flip = drm_atomic_helper_page_flip,
344 .destroy = sti_crtc_destroy,
345 .set_property = sti_crtc_set_property,
346 .reset = drm_atomic_helper_crtc_reset,
347 .atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
348 .atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
351 bool sti_crtc_is_main(struct drm_crtc *crtc)
353 struct sti_mixer *mixer = to_sti_mixer(crtc);
355 if (mixer->id == STI_MIXER_MAIN)
360 EXPORT_SYMBOL(sti_crtc_is_main);
362 int sti_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,
363 struct drm_plane *primary, struct drm_plane *cursor)
365 struct drm_crtc *crtc = &mixer->drm_crtc;
368 res = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
371 DRM_ERROR("Can't initialze CRTC\n");
375 drm_crtc_helper_add(crtc, &sti_crtc_helper_funcs);
377 DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
378 crtc->base.id, sti_mixer_to_str(mixer));