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);
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->primary->fb, &crtc->mode,
152 mixer->id, 0, 0, w, h, x, y, w, h);
155 static int sti_drm_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y,
156 struct drm_framebuffer *old_fb)
158 struct sti_mixer *mixer = to_sti_mixer(crtc);
159 struct sti_layer *layer;
163 DRM_DEBUG_KMS("CRTC:%d (%s) fb:%d (%d,%d)\n",
164 crtc->base.id, sti_mixer_to_str(mixer),
165 crtc->primary->fb->base.id, x, y);
167 /* GDP is reserved to the CRTC FB */
168 layer = to_sti_layer(crtc->primary);
170 DRM_ERROR("Can not find GDP0)\n");
175 w = crtc->primary->fb->width - crtc->x;
176 h = crtc->primary->fb->height - crtc->y;
178 ret = sti_layer_prepare(layer, crtc->primary->fb, &crtc->mode,
179 mixer->id, 0, 0, w, h,
180 crtc->x, crtc->y, w, h);
182 DRM_ERROR("Can not prepare layer\n");
186 sti_drm_crtc_commit(crtc);
191 static void sti_drm_crtc_load_lut(struct drm_crtc *crtc)
196 static void sti_drm_crtc_disable(struct drm_crtc *crtc)
198 struct sti_mixer *mixer = to_sti_mixer(crtc);
199 struct device *dev = mixer->dev;
200 struct sti_compositor *compo = dev_get_drvdata(dev);
201 struct sti_layer *layer;
206 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc->base.id, sti_mixer_to_str(mixer));
208 /* Disable Background */
209 sti_mixer_set_background_status(mixer, false);
212 layer = to_sti_layer(crtc->primary);
214 DRM_ERROR("Cannot find GDP0\n");
218 /* Disable layer at mixer level */
219 if (sti_mixer_set_layer_status(mixer, layer, false))
220 DRM_ERROR("Can not disable %s layer at mixer\n",
221 sti_layer_to_str(layer));
223 /* Wait a while to be sure that a Vsync event is received */
224 msleep(WAIT_NEXT_VSYNC_MS);
226 /* Then disable layer itself */
227 sti_layer_disable(layer);
229 drm_crtc_vblank_off(crtc);
231 /* Disable pixel clock and compo IP clocks */
232 if (mixer->id == STI_MIXER_MAIN) {
233 clk_disable_unprepare(compo->clk_pix_main);
234 clk_disable_unprepare(compo->clk_compo_main);
236 clk_disable_unprepare(compo->clk_pix_aux);
237 clk_disable_unprepare(compo->clk_compo_aux);
240 compo->enable = false;
243 static struct drm_crtc_helper_funcs sti_crtc_helper_funcs = {
244 .dpms = sti_drm_crtc_dpms,
245 .prepare = sti_drm_crtc_prepare,
246 .commit = sti_drm_crtc_commit,
247 .mode_fixup = sti_drm_crtc_mode_fixup,
248 .mode_set = sti_drm_crtc_mode_set,
249 .mode_set_base = sti_drm_crtc_mode_set_base,
250 .load_lut = sti_drm_crtc_load_lut,
251 .disable = sti_drm_crtc_disable,
254 static int sti_drm_crtc_page_flip(struct drm_crtc *crtc,
255 struct drm_framebuffer *fb,
256 struct drm_pending_vblank_event *event,
257 uint32_t page_flip_flags)
259 struct drm_device *drm_dev = crtc->dev;
260 struct drm_framebuffer *old_fb;
261 struct sti_mixer *mixer = to_sti_mixer(crtc);
265 DRM_DEBUG_KMS("fb %d --> fb %d\n",
266 crtc->primary->fb->base.id, fb->base.id);
268 mutex_lock(&drm_dev->struct_mutex);
270 old_fb = crtc->primary->fb;
271 crtc->primary->fb = fb;
272 ret = sti_drm_crtc_mode_set_base(crtc, crtc->x, crtc->y, old_fb);
274 DRM_ERROR("failed\n");
275 crtc->primary->fb = old_fb;
280 event->pipe = mixer->id;
282 ret = drm_vblank_get(drm_dev, event->pipe);
284 DRM_ERROR("Cannot get vblank\n");
288 spin_lock_irqsave(&drm_dev->event_lock, flags);
289 if (mixer->pending_event) {
290 drm_vblank_put(drm_dev, event->pipe);
293 mixer->pending_event = event;
295 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
298 mutex_unlock(&drm_dev->struct_mutex);
302 static void sti_drm_crtc_destroy(struct drm_crtc *crtc)
305 drm_crtc_cleanup(crtc);
308 static int sti_drm_crtc_set_property(struct drm_crtc *crtc,
309 struct drm_property *property,
316 int sti_drm_crtc_vblank_cb(struct notifier_block *nb,
317 unsigned long event, void *data)
319 struct drm_device *drm_dev;
320 struct sti_compositor *compo =
321 container_of(nb, struct sti_compositor, vtg_vblank_nb);
324 struct sti_drm_private *priv;
326 drm_dev = compo->mixer[*crtc]->drm_crtc.dev;
327 priv = drm_dev->dev_private;
329 if ((event != VTG_TOP_FIELD_EVENT) &&
330 (event != VTG_BOTTOM_FIELD_EVENT)) {
331 DRM_ERROR("unknown event: %lu\n", event);
335 drm_handle_vblank(drm_dev, *crtc);
337 spin_lock_irqsave(&drm_dev->event_lock, flags);
338 if (compo->mixer[*crtc]->pending_event) {
339 drm_send_vblank_event(drm_dev, -1,
340 compo->mixer[*crtc]->pending_event);
341 drm_vblank_put(drm_dev, *crtc);
342 compo->mixer[*crtc]->pending_event = NULL;
344 spin_unlock_irqrestore(&drm_dev->event_lock, flags);
349 int sti_drm_crtc_enable_vblank(struct drm_device *dev, int crtc)
351 struct sti_drm_private *dev_priv = dev->dev_private;
352 struct sti_compositor *compo = dev_priv->compo;
353 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
355 if (sti_vtg_register_client(crtc == STI_MIXER_MAIN ?
356 compo->vtg_main : compo->vtg_aux,
357 vtg_vblank_nb, crtc)) {
358 DRM_ERROR("Cannot register VTG notifier\n");
364 EXPORT_SYMBOL(sti_drm_crtc_enable_vblank);
366 void sti_drm_crtc_disable_vblank(struct drm_device *dev, int crtc)
368 struct sti_drm_private *priv = dev->dev_private;
369 struct sti_compositor *compo = priv->compo;
370 struct notifier_block *vtg_vblank_nb = &compo->vtg_vblank_nb;
372 DRM_DEBUG_DRIVER("\n");
374 if (sti_vtg_unregister_client(crtc == STI_MIXER_MAIN ?
375 compo->vtg_main : compo->vtg_aux, vtg_vblank_nb))
376 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
378 /* free the resources of the pending requests */
379 if (compo->mixer[crtc]->pending_event) {
380 drm_vblank_put(dev, crtc);
381 compo->mixer[crtc]->pending_event = NULL;
384 EXPORT_SYMBOL(sti_drm_crtc_disable_vblank);
386 static struct drm_crtc_funcs sti_crtc_funcs = {
387 .set_config = drm_crtc_helper_set_config,
388 .page_flip = sti_drm_crtc_page_flip,
389 .destroy = sti_drm_crtc_destroy,
390 .set_property = sti_drm_crtc_set_property,
393 bool sti_drm_crtc_is_main(struct drm_crtc *crtc)
395 struct sti_mixer *mixer = to_sti_mixer(crtc);
397 if (mixer->id == STI_MIXER_MAIN)
403 int sti_drm_crtc_init(struct drm_device *drm_dev, struct sti_mixer *mixer,
404 struct drm_plane *primary, struct drm_plane *cursor)
406 struct drm_crtc *crtc = &mixer->drm_crtc;
409 res = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
412 DRM_ERROR("Can not initialze CRTC\n");
416 drm_crtc_helper_add(crtc, &sti_crtc_helper_funcs);
418 DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
419 crtc->base.id, sti_mixer_to_str(mixer));