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_load_lut(struct drm_crtc
*crtc
)
198 static void sti_drm_crtc_disable(struct drm_crtc
*crtc
)
200 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
201 struct device
*dev
= mixer
->dev
;
202 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
203 struct sti_layer
*layer
;
208 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc
->base
.id
, sti_mixer_to_str(mixer
));
210 /* Disable Background */
211 sti_mixer_set_background_status(mixer
, false);
214 layer
= to_sti_layer(crtc
->primary
);
216 DRM_ERROR("Cannot find GDP0\n");
220 /* Disable layer at mixer level */
221 if (sti_mixer_set_layer_status(mixer
, layer
, false))
222 DRM_ERROR("Can not disable %s layer at mixer\n",
223 sti_layer_to_str(layer
));
225 /* Wait a while to be sure that a Vsync event is received */
226 msleep(WAIT_NEXT_VSYNC_MS
);
228 /* Then disable layer itself */
229 sti_layer_disable(layer
);
231 drm_crtc_vblank_off(crtc
);
233 /* Disable pixel clock and compo IP clocks */
234 if (mixer
->id
== STI_MIXER_MAIN
) {
235 clk_disable_unprepare(compo
->clk_pix_main
);
236 clk_disable_unprepare(compo
->clk_compo_main
);
238 clk_disable_unprepare(compo
->clk_pix_aux
);
239 clk_disable_unprepare(compo
->clk_compo_aux
);
242 mixer
->enabled
= false;
245 static struct drm_crtc_helper_funcs sti_crtc_helper_funcs
= {
246 .dpms
= sti_drm_crtc_dpms
,
247 .prepare
= sti_drm_crtc_prepare
,
248 .commit
= sti_drm_crtc_commit
,
249 .mode_fixup
= sti_drm_crtc_mode_fixup
,
250 .mode_set
= sti_drm_crtc_mode_set
,
251 .mode_set_base
= sti_drm_crtc_mode_set_base
,
252 .load_lut
= sti_drm_crtc_load_lut
,
253 .disable
= sti_drm_crtc_disable
,
256 static int sti_drm_crtc_page_flip(struct drm_crtc
*crtc
,
257 struct drm_framebuffer
*fb
,
258 struct drm_pending_vblank_event
*event
,
259 uint32_t page_flip_flags
)
261 struct drm_device
*drm_dev
= crtc
->dev
;
262 struct drm_framebuffer
*old_fb
;
263 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
267 DRM_DEBUG_KMS("fb %d --> fb %d\n",
268 crtc
->primary
->fb
->base
.id
, fb
->base
.id
);
270 mutex_lock(&drm_dev
->struct_mutex
);
272 old_fb
= crtc
->primary
->fb
;
273 crtc
->primary
->fb
= fb
;
274 ret
= sti_drm_crtc_mode_set_base(crtc
, crtc
->x
, crtc
->y
, old_fb
);
276 DRM_ERROR("failed\n");
277 crtc
->primary
->fb
= old_fb
;
282 event
->pipe
= mixer
->id
;
284 ret
= drm_vblank_get(drm_dev
, event
->pipe
);
286 DRM_ERROR("Cannot get vblank\n");
290 spin_lock_irqsave(&drm_dev
->event_lock
, flags
);
291 if (mixer
->pending_event
) {
292 drm_vblank_put(drm_dev
, event
->pipe
);
295 mixer
->pending_event
= event
;
297 spin_unlock_irqrestore(&drm_dev
->event_lock
, flags
);
300 mutex_unlock(&drm_dev
->struct_mutex
);
304 static void sti_drm_crtc_destroy(struct drm_crtc
*crtc
)
307 drm_crtc_cleanup(crtc
);
310 static int sti_drm_crtc_set_property(struct drm_crtc
*crtc
,
311 struct drm_property
*property
,
318 int sti_drm_crtc_vblank_cb(struct notifier_block
*nb
,
319 unsigned long event
, void *data
)
321 struct drm_device
*drm_dev
;
322 struct sti_compositor
*compo
=
323 container_of(nb
, struct sti_compositor
, vtg_vblank_nb
);
326 struct sti_drm_private
*priv
;
328 drm_dev
= compo
->mixer
[*crtc
]->drm_crtc
.dev
;
329 priv
= drm_dev
->dev_private
;
331 if ((event
!= VTG_TOP_FIELD_EVENT
) &&
332 (event
!= VTG_BOTTOM_FIELD_EVENT
)) {
333 DRM_ERROR("unknown event: %lu\n", event
);
337 drm_handle_vblank(drm_dev
, *crtc
);
339 spin_lock_irqsave(&drm_dev
->event_lock
, flags
);
340 if (compo
->mixer
[*crtc
]->pending_event
) {
341 drm_send_vblank_event(drm_dev
, -1,
342 compo
->mixer
[*crtc
]->pending_event
);
343 drm_vblank_put(drm_dev
, *crtc
);
344 compo
->mixer
[*crtc
]->pending_event
= NULL
;
346 spin_unlock_irqrestore(&drm_dev
->event_lock
, flags
);
351 int sti_drm_crtc_enable_vblank(struct drm_device
*dev
, int crtc
)
353 struct sti_drm_private
*dev_priv
= dev
->dev_private
;
354 struct sti_compositor
*compo
= dev_priv
->compo
;
355 struct notifier_block
*vtg_vblank_nb
= &compo
->vtg_vblank_nb
;
357 if (sti_vtg_register_client(crtc
== STI_MIXER_MAIN
?
358 compo
->vtg_main
: compo
->vtg_aux
,
359 vtg_vblank_nb
, crtc
)) {
360 DRM_ERROR("Cannot register VTG notifier\n");
366 EXPORT_SYMBOL(sti_drm_crtc_enable_vblank
);
368 void sti_drm_crtc_disable_vblank(struct drm_device
*dev
, int crtc
)
370 struct sti_drm_private
*priv
= dev
->dev_private
;
371 struct sti_compositor
*compo
= priv
->compo
;
372 struct notifier_block
*vtg_vblank_nb
= &compo
->vtg_vblank_nb
;
374 DRM_DEBUG_DRIVER("\n");
376 if (sti_vtg_unregister_client(crtc
== STI_MIXER_MAIN
?
377 compo
->vtg_main
: compo
->vtg_aux
, vtg_vblank_nb
))
378 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
380 /* free the resources of the pending requests */
381 if (compo
->mixer
[crtc
]->pending_event
) {
382 drm_vblank_put(dev
, crtc
);
383 compo
->mixer
[crtc
]->pending_event
= NULL
;
386 EXPORT_SYMBOL(sti_drm_crtc_disable_vblank
);
388 static struct drm_crtc_funcs sti_crtc_funcs
= {
389 .set_config
= drm_crtc_helper_set_config
,
390 .page_flip
= sti_drm_crtc_page_flip
,
391 .destroy
= sti_drm_crtc_destroy
,
392 .set_property
= sti_drm_crtc_set_property
,
395 bool sti_drm_crtc_is_main(struct drm_crtc
*crtc
)
397 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
399 if (mixer
->id
== STI_MIXER_MAIN
)
404 EXPORT_SYMBOL(sti_drm_crtc_is_main
);
406 int sti_drm_crtc_init(struct drm_device
*drm_dev
, struct sti_mixer
*mixer
,
407 struct drm_plane
*primary
, struct drm_plane
*cursor
)
409 struct drm_crtc
*crtc
= &mixer
->drm_crtc
;
412 res
= drm_crtc_init_with_planes(drm_dev
, crtc
, primary
, cursor
,
415 DRM_ERROR("Can not initialze CRTC\n");
419 drm_crtc_helper_add(crtc
, &sti_crtc_helper_funcs
);
421 DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
422 crtc
->base
.id
, sti_mixer_to_str(mixer
));