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_crtc_helper.h>
13 #include <drm/drm_plane_helper.h>
15 #include "sti_compositor.h"
16 #include "sti_drm_drv.h"
17 #include "sti_drm_crtc.h"
20 static void sti_drm_crtc_dpms(struct drm_crtc *crtc, int mode)
25 static void sti_drm_crtc_prepare(struct drm_crtc *crtc)
27 struct sti_mixer *mixer = to_sti_mixer(crtc);
28 struct device *dev = mixer->dev;
29 struct sti_compositor *compo = dev_get_drvdata(dev);
31 mixer->enabled = true;
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 sti_mixer_clear_all_layers(mixer);
45 static void sti_drm_crtc_commit(struct drm_crtc *crtc)
47 struct sti_mixer *mixer = to_sti_mixer(crtc);
48 struct device *dev = mixer->dev;
49 struct sti_compositor *compo = dev_get_drvdata(dev);
50 struct sti_layer *layer;
52 if ((!mixer || !compo)) {
53 DRM_ERROR("Can not find mixer or compositor)\n");
57 /* get GDP which is reserved to the CRTC FB */
58 layer = to_sti_layer(crtc->primary);
60 sti_layer_commit(layer);
62 DRM_ERROR("Can not find CRTC dedicated plane (GDP0)\n");
64 /* Enable layer on mixer */
65 if (sti_mixer_set_layer_status(mixer, layer, true))
66 DRM_ERROR("Can not enable layer at mixer\n");
68 drm_crtc_vblank_on(crtc);
71 static bool sti_drm_crtc_mode_fixup(struct drm_crtc *crtc,
72 const struct drm_display_mode *mode,
73 struct drm_display_mode *adjusted_mode)
75 /* accept the provided drm_display_mode, do not fix it up */
80 sti_drm_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode,
81 struct drm_display_mode *adjusted_mode, int x, int y,
82 struct drm_framebuffer *old_fb)
84 struct sti_mixer *mixer = to_sti_mixer(crtc);
85 struct device *dev = mixer->dev;
86 struct sti_compositor *compo = dev_get_drvdata(dev);
87 struct sti_layer *layer;
89 int rate = mode->clock * 1000;
93 DRM_DEBUG_KMS("CRTC:%d (%s) fb:%d mode:%d (%s)\n",
94 crtc->base.id, sti_mixer_to_str(mixer),
95 crtc->primary->fb->base.id, mode->base.id, mode->name);
97 DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
98 mode->vrefresh, mode->clock,
100 mode->hsync_start, mode->hsync_end,
103 mode->vsync_start, mode->vsync_end,
104 mode->vtotal, mode->type, mode->flags);
106 /* Set rate and prepare/enable pixel clock */
107 if (mixer->id == STI_MIXER_MAIN)
108 clk = compo->clk_pix_main;
110 clk = compo->clk_pix_aux;
112 res = clk_set_rate(clk, rate);
114 DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate);
117 if (clk_prepare_enable(clk)) {
118 DRM_ERROR("Failed to prepare/enable pix clk\n");
122 sti_vtg_set_config(mixer->id == STI_MIXER_MAIN ?
123 compo->vtg_main : compo->vtg_aux, &crtc->mode);
125 /* a GDP is reserved to the CRTC FB */
126 layer = to_sti_layer(crtc->primary);
128 DRM_ERROR("Can not find GDP0)\n");
132 /* copy the mode data adjusted by mode_fixup() into crtc->mode
133 * so that hardware can be set to proper mode
135 memcpy(&crtc->mode, adjusted_mode, sizeof(*adjusted_mode));
137 res = sti_mixer_set_layer_depth(mixer, layer);
139 DRM_ERROR("Can not set layer depth\n");
142 res = sti_mixer_active_video_area(mixer, &crtc->mode);
144 DRM_ERROR("Can not set active video area\n");
148 w = crtc->primary->fb->width - x;
149 h = crtc->primary->fb->height - y;
151 return sti_layer_prepare(layer, crtc,
152 crtc->primary->fb, &crtc->mode,
153 mixer->id, 0, 0, w, h, x, y, w, h);
156 static int sti_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
157 struct drm_framebuffer *old_fb)
159 struct sti_mixer *mixer = to_sti_mixer(crtc);
160 struct sti_layer *layer;
164 DRM_DEBUG_KMS("CRTC:%d (%s) fb:%d (%d,%d)\n",
165 crtc->base.id, sti_mixer_to_str(mixer),
166 crtc->primary->fb->base.id, x, y);
168 /* GDP is reserved to the CRTC FB */
169 layer = to_sti_layer(crtc->primary);
171 DRM_ERROR("Can not find GDP0)\n");
176 w = crtc->primary->fb->width - crtc->x;
177 h = crtc->primary->fb->height - crtc->y;
179 ret = sti_layer_prepare(layer, crtc,
180 crtc->primary->fb, &crtc->mode,
181 mixer->id, 0, 0, w, h,
182 crtc->x, crtc->y, w, h);
184 DRM_ERROR("Can not prepare layer\n");
188 sti_drm_crtc_commit(crtc);
193 static void sti_drm_crtc_disable(struct drm_crtc *crtc)
195 struct sti_mixer *mixer = to_sti_mixer(crtc);
196 struct device *dev = mixer->dev;
197 struct sti_compositor *compo = dev_get_drvdata(dev);
198 struct sti_layer *layer;
203 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));
205 /* Disable Background */
206 sti_mixer_set_background_status(mixer, false);
209 layer = to_sti_layer(crtc->primary);
211 DRM_ERROR("Cannot find GDP0\n");
215 /* Disable layer at mixer level */
216 if (sti_mixer_set_layer_status(mixer, layer, false))
217 DRM_ERROR("Can not disable %s layer at mixer\n",
218 sti_layer_to_str(layer));
220 /* Wait a while to be sure that a Vsync event is received */
221 msleep(WAIT_NEXT_VSYNC_MS);
223 /* Then disable layer itself */
224 sti_layer_disable(layer);
226 drm_crtc_vblank_off(crtc);
228 /* Disable pixel clock and compo IP clocks */
229 if (mixer->id == STI_MIXER_MAIN) {
230 clk_disable_unprepare(compo->clk_pix_main);
231 clk_disable_unprepare(compo->clk_compo_main);
233 clk_disable_unprepare(compo->clk_pix_aux);
234 clk_disable_unprepare(compo->clk_compo_aux);
237 mixer->enabled = false;
240 static struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
241 .dpms = sti_drm_crtc_dpms,
242 .prepare = sti_drm_crtc_prepare,
243 .commit = sti_drm_crtc_commit,
244 .mode_fixup = sti_drm_crtc_mode_fixup,
245 .mode_set = sti_drm_crtc_mode_set,
246 .mode_set_base = sti_drm_crtc_mode_set_base,
247 .disable = sti_drm_crtc_disable,
250 static int sti_drm_crtc_page_flip(struct drm_crtc *crtc,
251 struct drm_framebuffer *fb,
252 struct drm_pending_vblank_event *event,
253 uint32_t page_flip_flags)
255 struct drm_device *drm_dev = crtc->dev;
256 struct drm_framebuffer *old_fb;
257 struct sti_mixer *mixer = to_sti_mixer(crtc);
261 DRM_DEBUG_KMS("fb %d --> fb %d\n",
262 crtc->primary->fb->base.id, fb->base.id);
264 mutex_lock(&drm_dev->struct_mutex);
266 old_fb = crtc->primary->fb;
267 crtc->primary->fb = fb;
268 ret = sti_drm_crtc_mode_set_base(crtc, crtc->x, crtc->y, old_fb);
270 DRM_ERROR("failed\n");
271 crtc->primary->fb = old_fb;
276 event->pipe = mixer->id;
278 ret = drm_vblank_get(drm_dev, event->pipe);
280 DRM_ERROR("Cannot get vblank\n");
284 spin_lock_irqsave(&drm_dev->event_lock, flags);
285 if (mixer->pending_event) {
286 drm_vblank_put(drm_dev, event->pipe);
289 mixer->pending_event = event;
291 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
294 mutex_unlock(&drm_dev->struct_mutex);
298 static void sti_drm_crtc_destroy(struct drm_crtc *crtc)
301 drm_crtc_cleanup(crtc);
304 static int sti_drm_crtc_set_property(struct drm_crtc *crtc,
305 struct drm_property *property,
312 int sti_drm_crtc_vblank_cb(struct notifier_block *nb,
313 unsigned long event, void *data)
315 struct drm_device *drm_dev;
316 struct sti_compositor *compo =
317 container_of(nb, struct sti_compositor, vtg_vblank_nb);
320 struct sti_drm_private *priv;
322 drm_dev = compo->mixer[*crtc]->drm_crtc.dev;
323 priv = drm_dev->dev_private;
325 if ((event != VTG_TOP_FIELD_EVENT) &&
326 (event != VTG_BOTTOM_FIELD_EVENT)) {
327 DRM_ERROR("unknown event: %lu\n", event);
331 drm_handle_vblank(drm_dev, *crtc);
333 spin_lock_irqsave(&drm_dev->event_lock, flags);
334 if (compo->mixer[*crtc]->pending_event) {
335 drm_send_vblank_event(drm_dev, -1,
336 compo->mixer[*crtc]->pending_event);
337 drm_vblank_put(drm_dev, *crtc);
338 compo->mixer[*crtc]->pending_event = NULL;
340 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
345 int sti_drm_crtc_enable_vblank(struct drm_device *dev, int crtc)
347 struct sti_drm_private *dev_priv = dev->dev_private;
348 struct sti_compositor *compo = dev_priv->compo;
349 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
351 if (sti_vtg_register_client(crtc == STI_MIXER_MAIN ?
352 compo->vtg_main : compo->vtg_aux,
353 vtg_vblank_nb, crtc)) {
354 DRM_ERROR("Cannot register VTG notifier\n");
360 EXPORT_SYMBOL(sti_drm_crtc_enable_vblank);
362 void sti_drm_crtc_disable_vblank(struct drm_device *dev, int crtc)
364 struct sti_drm_private *priv = dev->dev_private;
365 struct sti_compositor *compo = priv->compo;
366 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
368 DRM_DEBUG_DRIVER("\n");
370 if (sti_vtg_unregister_client(crtc == STI_MIXER_MAIN ?
371 compo->vtg_main : compo->vtg_aux, vtg_vblank_nb))
372 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
374 /* free the resources of the pending requests */
375 if (compo->mixer[crtc]->pending_event) {
376 drm_vblank_put(dev, crtc);
377 compo->mixer[crtc]->pending_event = NULL;
380 EXPORT_SYMBOL(sti_drm_crtc_disable_vblank);
382 static struct drm_crtc_funcs sti_crtc_funcs = {
383 .set_config = drm_crtc_helper_set_config,
384 .page_flip = sti_drm_crtc_page_flip,
385 .destroy = sti_drm_crtc_destroy,
386 .set_property = sti_drm_crtc_set_property,
389 bool sti_drm_crtc_is_main(struct drm_crtc *crtc)
391 struct sti_mixer *mixer = to_sti_mixer(crtc);
393 if (mixer->id == STI_MIXER_MAIN)
398 EXPORT_SYMBOL(sti_drm_crtc_is_main);
400 int sti_drm_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,
401 struct drm_plane *primary, struct drm_plane *cursor)
403 struct drm_crtc *crtc = &mixer->drm_crtc;
406 res = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
409 DRM_ERROR("Can not initialze CRTC\n");
413 drm_crtc_helper_add(crtc, &sti_crtc_helper_funcs);
415 DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
416 crtc->base.id, sti_mixer_to_str(mixer));