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");
43 static void sti_drm_crtc_commit(struct drm_crtc
*crtc
)
45 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
46 struct device
*dev
= mixer
->dev
;
47 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
48 struct sti_layer
*layer
;
50 if ((!mixer
|| !compo
)) {
51 DRM_ERROR("Can not find mixer or compositor)\n");
55 /* get GDP which is reserved to the CRTC FB */
56 layer
= to_sti_layer(crtc
->primary
);
58 sti_layer_commit(layer
);
60 DRM_ERROR("Can not find CRTC dedicated plane (GDP0)\n");
62 /* Enable layer on mixer */
63 if (sti_mixer_set_layer_status(mixer
, layer
, true))
64 DRM_ERROR("Can not enable layer at mixer\n");
67 static bool sti_drm_crtc_mode_fixup(struct drm_crtc
*crtc
,
68 const struct drm_display_mode
*mode
,
69 struct drm_display_mode
*adjusted_mode
)
71 /* accept the provided drm_display_mode, do not fix it up */
76 sti_drm_crtc_mode_set(struct drm_crtc
*crtc
, struct drm_display_mode
*mode
,
77 struct drm_display_mode
*adjusted_mode
, int x
, int y
,
78 struct drm_framebuffer
*old_fb
)
80 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
81 struct device
*dev
= mixer
->dev
;
82 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
83 struct sti_layer
*layer
;
85 int rate
= mode
->clock
* 1000;
89 DRM_DEBUG_KMS("CRTC:%d (%s) fb:%d mode:%d (%s)\n",
90 crtc
->base
.id
, sti_mixer_to_str(mixer
),
91 crtc
->primary
->fb
->base
.id
, mode
->base
.id
, mode
->name
);
93 DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
94 mode
->vrefresh
, mode
->clock
,
96 mode
->hsync_start
, mode
->hsync_end
,
99 mode
->vsync_start
, mode
->vsync_end
,
100 mode
->vtotal
, mode
->type
, mode
->flags
);
102 /* Set rate and prepare/enable pixel clock */
103 if (mixer
->id
== STI_MIXER_MAIN
)
104 clk
= compo
->clk_pix_main
;
106 clk
= compo
->clk_pix_aux
;
108 res
= clk_set_rate(clk
, rate
);
110 DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate
);
113 if (clk_prepare_enable(clk
)) {
114 DRM_ERROR("Failed to prepare/enable pix clk\n");
118 sti_vtg_set_config(mixer
->id
== STI_MIXER_MAIN
?
119 compo
->vtg_main
: compo
->vtg_aux
, &crtc
->mode
);
121 /* a GDP is reserved to the CRTC FB */
122 layer
= to_sti_layer(crtc
->primary
);
124 DRM_ERROR("Can not find GDP0)\n");
128 /* copy the mode data adjusted by mode_fixup() into crtc->mode
129 * so that hardware can be set to proper mode
131 memcpy(&crtc
->mode
, adjusted_mode
, sizeof(*adjusted_mode
));
133 res
= sti_mixer_set_layer_depth(mixer
, layer
);
135 DRM_ERROR("Can not set layer depth\n");
138 res
= sti_mixer_active_video_area(mixer
, &crtc
->mode
);
140 DRM_ERROR("Can not set active video area\n");
144 w
= crtc
->primary
->fb
->width
- x
;
145 h
= crtc
->primary
->fb
->height
- y
;
147 return sti_layer_prepare(layer
, crtc
->primary
->fb
, &crtc
->mode
,
148 mixer
->id
, 0, 0, w
, h
, x
, y
, w
, h
);
151 static int sti_drm_crtc_mode_set_base(struct drm_crtc
*crtc
, int x
, int y
,
152 struct drm_framebuffer
*old_fb
)
154 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
155 struct sti_layer
*layer
;
159 DRM_DEBUG_KMS("CRTC:%d (%s) fb:%d (%d,%d)\n",
160 crtc
->base
.id
, sti_mixer_to_str(mixer
),
161 crtc
->primary
->fb
->base
.id
, x
, y
);
163 /* GDP is reserved to the CRTC FB */
164 layer
= to_sti_layer(crtc
->primary
);
166 DRM_ERROR("Can not find GDP0)\n");
171 w
= crtc
->primary
->fb
->width
- crtc
->x
;
172 h
= crtc
->primary
->fb
->height
- crtc
->y
;
174 ret
= sti_layer_prepare(layer
, crtc
->primary
->fb
, &crtc
->mode
,
175 mixer
->id
, 0, 0, w
, h
,
176 crtc
->x
, crtc
->y
, w
, h
);
178 DRM_ERROR("Can not prepare layer\n");
182 sti_drm_crtc_commit(crtc
);
187 static void sti_drm_crtc_load_lut(struct drm_crtc
*crtc
)
192 static void sti_drm_crtc_disable(struct drm_crtc
*crtc
)
194 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
195 struct device
*dev
= mixer
->dev
;
196 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
197 struct sti_layer
*layer
;
202 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc
->base
.id
, sti_mixer_to_str(mixer
));
204 /* Disable Background */
205 sti_mixer_set_background_status(mixer
, false);
208 layer
= to_sti_layer(crtc
->primary
);
210 DRM_ERROR("Cannot find GDP0\n");
214 /* Disable layer at mixer level */
215 if (sti_mixer_set_layer_status(mixer
, layer
, false))
216 DRM_ERROR("Can not disable %s layer at mixer\n",
217 sti_layer_to_str(layer
));
219 /* Wait a while to be sure that a Vsync event is received */
220 msleep(WAIT_NEXT_VSYNC_MS
);
222 /* Then disable layer itself */
223 sti_layer_disable(layer
);
225 drm_vblank_off(crtc
->dev
, mixer
->id
);
227 /* Disable pixel clock and compo IP clocks */
228 if (mixer
->id
== STI_MIXER_MAIN
) {
229 clk_disable_unprepare(compo
->clk_pix_main
);
230 clk_disable_unprepare(compo
->clk_compo_main
);
232 clk_disable_unprepare(compo
->clk_pix_aux
);
233 clk_disable_unprepare(compo
->clk_compo_aux
);
236 compo
->enable
= false;
239 static struct drm_crtc_helper_funcs sti_crtc_helper_funcs
= {
240 .dpms
= sti_drm_crtc_dpms
,
241 .prepare
= sti_drm_crtc_prepare
,
242 .commit
= sti_drm_crtc_commit
,
243 .mode_fixup
= sti_drm_crtc_mode_fixup
,
244 .mode_set
= sti_drm_crtc_mode_set
,
245 .mode_set_base
= sti_drm_crtc_mode_set_base
,
246 .load_lut
= sti_drm_crtc_load_lut
,
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
;
369 DRM_DEBUG_DRIVER("\n");
371 if (sti_vtg_unregister_client(crtc
== STI_MIXER_MAIN
?
372 compo
->vtg_main
: compo
->vtg_aux
, vtg_vblank_nb
))
373 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
375 /* free the resources of the pending requests */
376 spin_lock_irqsave(&dev
->event_lock
, flags
);
377 if (compo
->mixer
[crtc
]->pending_event
) {
378 drm_vblank_put(dev
, crtc
);
379 compo
->mixer
[crtc
]->pending_event
= NULL
;
381 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
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
));