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>
14 #include "sti_compositor.h"
15 #include "sti_drm_drv.h"
16 #include "sti_drm_crtc.h"
19 static void sti_drm_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
24 static void sti_drm_crtc_prepare(struct drm_crtc
*crtc
)
26 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
27 struct device
*dev
= mixer
->dev
;
28 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
32 /* Prepare and enable the compo IP clock */
33 if (mixer
->id
== STI_MIXER_MAIN
) {
34 if (clk_prepare_enable(compo
->clk_compo_main
))
35 DRM_INFO("Failed to prepare/enable compo_main clk\n");
37 if (clk_prepare_enable(compo
->clk_compo_aux
))
38 DRM_INFO("Failed to prepare/enable compo_aux clk\n");
42 static void sti_drm_crtc_commit(struct drm_crtc
*crtc
)
44 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
45 struct device
*dev
= mixer
->dev
;
46 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
47 struct sti_layer
*layer
;
49 if ((!mixer
|| !compo
)) {
50 DRM_ERROR("Can not find mixer or compositor)\n");
54 /* get GDP which is reserved to the CRTC FB */
55 layer
= to_sti_layer(crtc
->primary
);
57 sti_layer_commit(layer
);
59 DRM_ERROR("Can not find CRTC dedicated plane (GDP0)\n");
61 /* Enable layer on mixer */
62 if (sti_mixer_set_layer_status(mixer
, layer
, true))
63 DRM_ERROR("Can not enable layer at mixer\n");
66 static bool sti_drm_crtc_mode_fixup(struct drm_crtc
*crtc
,
67 const struct drm_display_mode
*mode
,
68 struct drm_display_mode
*adjusted_mode
)
70 /* accept the provided drm_display_mode, do not fix it up */
75 sti_drm_crtc_mode_set(struct drm_crtc
*crtc
, struct drm_display_mode
*mode
,
76 struct drm_display_mode
*adjusted_mode
, int x
, int y
,
77 struct drm_framebuffer
*old_fb
)
79 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
80 struct device
*dev
= mixer
->dev
;
81 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
82 struct sti_layer
*layer
;
84 int rate
= mode
->clock
* 1000;
88 DRM_DEBUG_KMS("CRTC:%d (%s) fb:%d mode:%d (%s)\n",
89 crtc
->base
.id
, sti_mixer_to_str(mixer
),
90 crtc
->primary
->fb
->base
.id
, mode
->base
.id
, mode
->name
);
92 DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
93 mode
->vrefresh
, mode
->clock
,
95 mode
->hsync_start
, mode
->hsync_end
,
98 mode
->vsync_start
, mode
->vsync_end
,
99 mode
->vtotal
, mode
->type
, mode
->flags
);
101 /* Set rate and prepare/enable pixel clock */
102 if (mixer
->id
== STI_MIXER_MAIN
)
103 clk
= compo
->clk_pix_main
;
105 clk
= compo
->clk_pix_aux
;
107 res
= clk_set_rate(clk
, rate
);
109 DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate
);
112 if (clk_prepare_enable(clk
)) {
113 DRM_ERROR("Failed to prepare/enable pix clk\n");
117 sti_vtg_set_config(mixer
->id
== STI_MIXER_MAIN
?
118 compo
->vtg_main
: compo
->vtg_aux
, &crtc
->mode
);
120 /* a GDP is reserved to the CRTC FB */
121 layer
= to_sti_layer(crtc
->primary
);
123 DRM_ERROR("Can not find GDP0)\n");
127 /* copy the mode data adjusted by mode_fixup() into crtc->mode
128 * so that hardware can be set to proper mode
130 memcpy(&crtc
->mode
, adjusted_mode
, sizeof(*adjusted_mode
));
132 res
= sti_mixer_set_layer_depth(mixer
, layer
);
134 DRM_ERROR("Can not set layer depth\n");
137 res
= sti_mixer_active_video_area(mixer
, &crtc
->mode
);
139 DRM_ERROR("Can not set active video area\n");
143 w
= crtc
->primary
->fb
->width
- x
;
144 h
= crtc
->primary
->fb
->height
- y
;
146 return sti_layer_prepare(layer
, crtc
->primary
->fb
, &crtc
->mode
,
147 mixer
->id
, 0, 0, w
, h
, x
, y
, w
, h
);
150 static int sti_drm_crtc_mode_set_base(struct drm_crtc
*crtc
, int x
, int y
,
151 struct drm_framebuffer
*old_fb
)
153 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
154 struct sti_layer
*layer
;
158 DRM_DEBUG_KMS("CRTC:%d (%s) fb:%d (%d,%d)\n",
159 crtc
->base
.id
, sti_mixer_to_str(mixer
),
160 crtc
->primary
->fb
->base
.id
, x
, y
);
162 /* GDP is reserved to the CRTC FB */
163 layer
= to_sti_layer(crtc
->primary
);
165 DRM_ERROR("Can not find GDP0)\n");
170 w
= crtc
->primary
->fb
->width
- crtc
->x
;
171 h
= crtc
->primary
->fb
->height
- crtc
->y
;
173 ret
= sti_layer_prepare(layer
, crtc
->primary
->fb
, &crtc
->mode
,
174 mixer
->id
, 0, 0, w
, h
,
175 crtc
->x
, crtc
->y
, w
, h
);
177 DRM_ERROR("Can not prepare layer\n");
181 sti_drm_crtc_commit(crtc
);
186 static void sti_drm_crtc_load_lut(struct drm_crtc
*crtc
)
191 static void sti_drm_crtc_disable(struct drm_crtc
*crtc
)
193 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
194 struct device
*dev
= mixer
->dev
;
195 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
196 struct sti_layer
*layer
;
201 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc
->base
.id
, sti_mixer_to_str(mixer
));
203 /* Disable Background */
204 sti_mixer_set_background_status(mixer
, false);
207 layer
= to_sti_layer(crtc
->primary
);
209 DRM_ERROR("Cannot find GDP0\n");
213 /* Disable layer at mixer level */
214 if (sti_mixer_set_layer_status(mixer
, layer
, false))
215 DRM_ERROR("Can not disable %s layer at mixer\n",
216 sti_layer_to_str(layer
));
218 /* Wait a while to be sure that a Vsync event is received */
219 msleep(WAIT_NEXT_VSYNC_MS
);
221 /* Then disable layer itself */
222 sti_layer_disable(layer
);
224 drm_vblank_off(crtc
->dev
, mixer
->id
);
226 /* Disable pixel clock and compo IP clocks */
227 if (mixer
->id
== STI_MIXER_MAIN
) {
228 clk_disable_unprepare(compo
->clk_pix_main
);
229 clk_disable_unprepare(compo
->clk_compo_main
);
231 clk_disable_unprepare(compo
->clk_pix_aux
);
232 clk_disable_unprepare(compo
->clk_compo_aux
);
235 compo
->enable
= false;
238 static struct drm_crtc_helper_funcs sti_crtc_helper_funcs
= {
239 .dpms
= sti_drm_crtc_dpms
,
240 .prepare
= sti_drm_crtc_prepare
,
241 .commit
= sti_drm_crtc_commit
,
242 .mode_fixup
= sti_drm_crtc_mode_fixup
,
243 .mode_set
= sti_drm_crtc_mode_set
,
244 .mode_set_base
= sti_drm_crtc_mode_set_base
,
245 .load_lut
= sti_drm_crtc_load_lut
,
246 .disable
= sti_drm_crtc_disable
,
249 static int sti_drm_crtc_page_flip(struct drm_crtc
*crtc
,
250 struct drm_framebuffer
*fb
,
251 struct drm_pending_vblank_event
*event
,
252 uint32_t page_flip_flags
)
254 struct drm_device
*drm_dev
= crtc
->dev
;
255 struct drm_framebuffer
*old_fb
;
256 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
260 DRM_DEBUG_KMS("fb %d --> fb %d\n",
261 crtc
->primary
->fb
->base
.id
, fb
->base
.id
);
263 mutex_lock(&drm_dev
->struct_mutex
);
265 old_fb
= crtc
->primary
->fb
;
266 crtc
->primary
->fb
= fb
;
267 ret
= sti_drm_crtc_mode_set_base(crtc
, crtc
->x
, crtc
->y
, old_fb
);
269 DRM_ERROR("failed\n");
270 crtc
->primary
->fb
= old_fb
;
275 event
->pipe
= mixer
->id
;
277 ret
= drm_vblank_get(drm_dev
, event
->pipe
);
279 DRM_ERROR("Cannot get vblank\n");
283 spin_lock_irqsave(&drm_dev
->event_lock
, flags
);
284 if (mixer
->pending_event
) {
285 drm_vblank_put(drm_dev
, event
->pipe
);
288 mixer
->pending_event
= event
;
290 spin_unlock_irqrestore(&drm_dev
->event_lock
, flags
);
293 mutex_unlock(&drm_dev
->struct_mutex
);
297 static void sti_drm_crtc_destroy(struct drm_crtc
*crtc
)
300 drm_crtc_cleanup(crtc
);
303 static int sti_drm_crtc_set_property(struct drm_crtc
*crtc
,
304 struct drm_property
*property
,
311 int sti_drm_crtc_vblank_cb(struct notifier_block
*nb
,
312 unsigned long event
, void *data
)
314 struct drm_device
*drm_dev
;
315 struct sti_compositor
*compo
=
316 container_of(nb
, struct sti_compositor
, vtg_vblank_nb
);
319 struct sti_drm_private
*priv
;
321 drm_dev
= compo
->mixer
[*crtc
]->drm_crtc
.dev
;
322 priv
= drm_dev
->dev_private
;
324 if ((event
!= VTG_TOP_FIELD_EVENT
) &&
325 (event
!= VTG_BOTTOM_FIELD_EVENT
)) {
326 DRM_ERROR("unknown event: %lu\n", event
);
330 drm_handle_vblank(drm_dev
, *crtc
);
332 spin_lock_irqsave(&drm_dev
->event_lock
, flags
);
333 if (compo
->mixer
[*crtc
]->pending_event
) {
334 drm_send_vblank_event(drm_dev
, -1,
335 compo
->mixer
[*crtc
]->pending_event
);
336 drm_vblank_put(drm_dev
, *crtc
);
337 compo
->mixer
[*crtc
]->pending_event
= NULL
;
339 spin_unlock_irqrestore(&drm_dev
->event_lock
, flags
);
344 int sti_drm_crtc_enable_vblank(struct drm_device
*dev
, int crtc
)
346 struct sti_drm_private
*dev_priv
= dev
->dev_private
;
347 struct sti_compositor
*compo
= dev_priv
->compo
;
348 struct notifier_block
*vtg_vblank_nb
= &compo
->vtg_vblank_nb
;
350 if (sti_vtg_register_client(crtc
== STI_MIXER_MAIN
?
351 compo
->vtg_main
: compo
->vtg_aux
,
352 vtg_vblank_nb
, crtc
)) {
353 DRM_ERROR("Cannot register VTG notifier\n");
359 EXPORT_SYMBOL(sti_drm_crtc_enable_vblank
);
361 void sti_drm_crtc_disable_vblank(struct drm_device
*dev
, int crtc
)
363 struct sti_drm_private
*priv
= dev
->dev_private
;
364 struct sti_compositor
*compo
= priv
->compo
;
365 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 spin_lock_irqsave(&dev
->event_lock
, flags
);
376 if (compo
->mixer
[crtc
]->pending_event
) {
377 drm_vblank_put(dev
, crtc
);
378 compo
->mixer
[crtc
]->pending_event
= NULL
;
380 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
383 EXPORT_SYMBOL(sti_drm_crtc_disable_vblank
);
385 static struct drm_crtc_funcs sti_crtc_funcs
= {
386 .set_config
= drm_crtc_helper_set_config
,
387 .page_flip
= sti_drm_crtc_page_flip
,
388 .destroy
= sti_drm_crtc_destroy
,
389 .set_property
= sti_drm_crtc_set_property
,
392 bool sti_drm_crtc_is_main(struct drm_crtc
*crtc
)
394 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
396 if (mixer
->id
== STI_MIXER_MAIN
)
402 int sti_drm_crtc_init(struct drm_device
*drm_dev
, struct sti_mixer
*mixer
,
403 struct drm_plane
*primary
, struct drm_plane
*cursor
)
405 struct drm_crtc
*crtc
= &mixer
->drm_crtc
;
408 res
= drm_crtc_init_with_planes(drm_dev
, crtc
, primary
, cursor
,
411 DRM_ERROR("Can not initialze CRTC\n");
415 drm_crtc_helper_add(crtc
, &sti_crtc_helper_funcs
);
417 DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
418 crtc
->base
.id
, sti_mixer_to_str(mixer
));