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_atomic.h>
13 #include <drm/drm_atomic_helper.h>
14 #include <drm/drm_crtc_helper.h>
15 #include <drm/drm_plane_helper.h>
17 #include "sti_compositor.h"
23 static void sti_crtc_enable(struct drm_crtc
*crtc
)
25 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
27 DRM_DEBUG_DRIVER("\n");
29 mixer
->status
= STI_MIXER_READY
;
31 drm_crtc_vblank_on(crtc
);
34 static void sti_crtc_disabling(struct drm_crtc
*crtc
)
36 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
38 DRM_DEBUG_DRIVER("\n");
40 mixer
->status
= STI_MIXER_DISABLING
;
44 sti_crtc_mode_set(struct drm_crtc
*crtc
, struct drm_display_mode
*mode
)
46 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
47 struct device
*dev
= mixer
->dev
;
48 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
49 struct clk
*compo_clk
, *pix_clk
;
50 int rate
= mode
->clock
* 1000;
52 DRM_DEBUG_KMS("CRTC:%d (%s) mode:%d (%s)\n",
53 crtc
->base
.id
, sti_mixer_to_str(mixer
),
54 mode
->base
.id
, mode
->name
);
56 DRM_DEBUG_KMS("%d %d %d %d %d %d %d %d %d %d 0x%x 0x%x\n",
57 mode
->vrefresh
, mode
->clock
,
59 mode
->hsync_start
, mode
->hsync_end
,
62 mode
->vsync_start
, mode
->vsync_end
,
63 mode
->vtotal
, mode
->type
, mode
->flags
);
65 if (mixer
->id
== STI_MIXER_MAIN
) {
66 compo_clk
= compo
->clk_compo_main
;
67 pix_clk
= compo
->clk_pix_main
;
69 compo_clk
= compo
->clk_compo_aux
;
70 pix_clk
= compo
->clk_pix_aux
;
73 /* Prepare and enable the compo IP clock */
74 if (clk_prepare_enable(compo_clk
)) {
75 DRM_INFO("Failed to prepare/enable compositor clk\n");
79 /* Set rate and prepare/enable pixel clock */
80 if (clk_set_rate(pix_clk
, rate
) < 0) {
81 DRM_ERROR("Cannot set rate (%dHz) for pix clk\n", rate
);
84 if (clk_prepare_enable(pix_clk
)) {
85 DRM_ERROR("Failed to prepare/enable pix clk\n");
89 sti_vtg_set_config(mixer
->id
== STI_MIXER_MAIN
?
90 compo
->vtg_main
: compo
->vtg_aux
, &crtc
->mode
);
92 if (sti_mixer_active_video_area(mixer
, &crtc
->mode
)) {
93 DRM_ERROR("Can't set active video area\n");
100 clk_disable_unprepare(pix_clk
);
102 clk_disable_unprepare(compo_clk
);
107 static void sti_crtc_disable(struct drm_crtc
*crtc
)
109 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
110 struct device
*dev
= mixer
->dev
;
111 struct sti_compositor
*compo
= dev_get_drvdata(dev
);
113 DRM_DEBUG_KMS("CRTC:%d (%s)\n", crtc
->base
.id
, sti_mixer_to_str(mixer
));
115 /* Disable Background */
116 sti_mixer_set_background_status(mixer
, false);
118 drm_crtc_vblank_off(crtc
);
120 /* Disable pixel clock and compo IP clocks */
121 if (mixer
->id
== STI_MIXER_MAIN
) {
122 clk_disable_unprepare(compo
->clk_pix_main
);
123 clk_disable_unprepare(compo
->clk_compo_main
);
125 clk_disable_unprepare(compo
->clk_pix_aux
);
126 clk_disable_unprepare(compo
->clk_compo_aux
);
129 mixer
->status
= STI_MIXER_DISABLED
;
133 sti_crtc_mode_set_nofb(struct drm_crtc
*crtc
)
135 sti_crtc_mode_set(crtc
, &crtc
->state
->adjusted_mode
);
138 static void sti_crtc_atomic_begin(struct drm_crtc
*crtc
,
139 struct drm_crtc_state
*old_crtc_state
)
141 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
143 if (crtc
->state
->event
) {
144 crtc
->state
->event
->pipe
= drm_crtc_index(crtc
);
146 WARN_ON(drm_crtc_vblank_get(crtc
) != 0);
148 mixer
->pending_event
= crtc
->state
->event
;
149 crtc
->state
->event
= NULL
;
153 static void sti_crtc_atomic_flush(struct drm_crtc
*crtc
,
154 struct drm_crtc_state
*old_crtc_state
)
156 struct drm_device
*drm_dev
= crtc
->dev
;
157 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
158 struct sti_compositor
*compo
= dev_get_drvdata(mixer
->dev
);
161 DRM_DEBUG_DRIVER("\n");
163 /* perform plane actions */
164 list_for_each_entry(p
, &drm_dev
->mode_config
.plane_list
, head
) {
165 struct sti_plane
*plane
= to_sti_plane(p
);
167 switch (plane
->status
) {
168 case STI_PLANE_UPDATED
:
169 /* update planes tag as updated */
170 DRM_DEBUG_DRIVER("update plane %s\n",
171 sti_plane_to_str(plane
));
173 if (sti_mixer_set_plane_depth(mixer
, plane
)) {
174 DRM_ERROR("Cannot set plane %s depth\n",
175 sti_plane_to_str(plane
));
179 if (sti_mixer_set_plane_status(mixer
, plane
, true)) {
180 DRM_ERROR("Cannot enable plane %s at mixer\n",
181 sti_plane_to_str(plane
));
185 /* if plane is HQVDP_0 then commit the vid[0] */
186 if (plane
->desc
== STI_HQVDP_0
)
187 sti_vid_commit(compo
->vid
[0], p
->state
);
189 plane
->status
= STI_PLANE_READY
;
192 case STI_PLANE_DISABLING
:
193 /* disabling sequence for planes tag as disabling */
194 DRM_DEBUG_DRIVER("disable plane %s from mixer\n",
195 sti_plane_to_str(plane
));
197 if (sti_mixer_set_plane_status(mixer
, plane
, false)) {
198 DRM_ERROR("Cannot disable plane %s at mixer\n",
199 sti_plane_to_str(plane
));
203 if (plane
->desc
== STI_CURSOR
)
204 /* tag plane status for disabled */
205 plane
->status
= STI_PLANE_DISABLED
;
207 /* tag plane status for flushing */
208 plane
->status
= STI_PLANE_FLUSHING
;
210 /* if plane is HQVDP_0 then disable the vid[0] */
211 if (plane
->desc
== STI_HQVDP_0
)
212 sti_vid_disable(compo
->vid
[0]);
216 /* Other status case are not handled */
222 static const struct drm_crtc_helper_funcs sti_crtc_helper_funcs
= {
223 .enable
= sti_crtc_enable
,
224 .disable
= sti_crtc_disabling
,
225 .mode_set_nofb
= sti_crtc_mode_set_nofb
,
226 .atomic_begin
= sti_crtc_atomic_begin
,
227 .atomic_flush
= sti_crtc_atomic_flush
,
230 static void sti_crtc_destroy(struct drm_crtc
*crtc
)
233 drm_crtc_cleanup(crtc
);
236 static int sti_crtc_set_property(struct drm_crtc
*crtc
,
237 struct drm_property
*property
,
244 int sti_crtc_vblank_cb(struct notifier_block
*nb
,
245 unsigned long event
, void *data
)
247 struct sti_compositor
*compo
=
248 container_of(nb
, struct sti_compositor
, vtg_vblank_nb
);
249 struct drm_crtc
*crtc
= data
;
250 struct sti_mixer
*mixer
;
252 struct sti_private
*priv
;
255 priv
= crtc
->dev
->dev_private
;
256 pipe
= drm_crtc_index(crtc
);
257 mixer
= compo
->mixer
[pipe
];
259 if ((event
!= VTG_TOP_FIELD_EVENT
) &&
260 (event
!= VTG_BOTTOM_FIELD_EVENT
)) {
261 DRM_ERROR("unknown event: %lu\n", event
);
265 drm_crtc_handle_vblank(crtc
);
267 spin_lock_irqsave(&crtc
->dev
->event_lock
, flags
);
268 if (mixer
->pending_event
) {
269 drm_crtc_send_vblank_event(crtc
, mixer
->pending_event
);
270 drm_crtc_vblank_put(crtc
);
271 mixer
->pending_event
= NULL
;
273 spin_unlock_irqrestore(&crtc
->dev
->event_lock
, flags
);
275 if (mixer
->status
== STI_MIXER_DISABLING
) {
278 /* Disable mixer only if all overlay planes (GDP and VDP)
280 list_for_each_entry(p
, &crtc
->dev
->mode_config
.plane_list
,
282 struct sti_plane
*plane
= to_sti_plane(p
);
284 if ((plane
->desc
& STI_PLANE_TYPE_MASK
) <= STI_VDP
)
285 if (plane
->status
!= STI_PLANE_DISABLED
)
288 sti_crtc_disable(crtc
);
294 int sti_crtc_enable_vblank(struct drm_device
*dev
, unsigned int pipe
)
296 struct sti_private
*dev_priv
= dev
->dev_private
;
297 struct sti_compositor
*compo
= dev_priv
->compo
;
298 struct notifier_block
*vtg_vblank_nb
= &compo
->vtg_vblank_nb
;
299 struct drm_crtc
*crtc
= &compo
->mixer
[pipe
]->drm_crtc
;
301 DRM_DEBUG_DRIVER("\n");
303 if (sti_vtg_register_client(pipe
== STI_MIXER_MAIN
?
304 compo
->vtg_main
: compo
->vtg_aux
,
305 vtg_vblank_nb
, crtc
)) {
306 DRM_ERROR("Cannot register VTG notifier\n");
313 void sti_crtc_disable_vblank(struct drm_device
*drm_dev
, unsigned int pipe
)
315 struct sti_private
*priv
= drm_dev
->dev_private
;
316 struct sti_compositor
*compo
= priv
->compo
;
317 struct notifier_block
*vtg_vblank_nb
= &compo
->vtg_vblank_nb
;
318 struct drm_crtc
*crtc
= &compo
->mixer
[pipe
]->drm_crtc
;
320 DRM_DEBUG_DRIVER("\n");
322 if (sti_vtg_unregister_client(pipe
== STI_MIXER_MAIN
?
323 compo
->vtg_main
: compo
->vtg_aux
, vtg_vblank_nb
))
324 DRM_DEBUG_DRIVER("Warning: cannot unregister VTG notifier\n");
326 /* free the resources of the pending requests */
327 if (compo
->mixer
[pipe
]->pending_event
) {
328 drm_crtc_vblank_put(crtc
);
329 compo
->mixer
[pipe
]->pending_event
= NULL
;
333 static int sti_crtc_late_register(struct drm_crtc
*crtc
)
335 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
336 struct sti_compositor
*compo
= dev_get_drvdata(mixer
->dev
);
338 if (drm_crtc_index(crtc
) == 0)
339 return sti_compositor_debufs_init(compo
, crtc
->dev
->primary
);
344 static const struct drm_crtc_funcs sti_crtc_funcs
= {
345 .set_config
= drm_atomic_helper_set_config
,
346 .page_flip
= drm_atomic_helper_page_flip
,
347 .destroy
= sti_crtc_destroy
,
348 .set_property
= sti_crtc_set_property
,
349 .reset
= drm_atomic_helper_crtc_reset
,
350 .atomic_duplicate_state
= drm_atomic_helper_crtc_duplicate_state
,
351 .atomic_destroy_state
= drm_atomic_helper_crtc_destroy_state
,
352 .late_register
= sti_crtc_late_register
,
355 bool sti_crtc_is_main(struct drm_crtc
*crtc
)
357 struct sti_mixer
*mixer
= to_sti_mixer(crtc
);
359 if (mixer
->id
== STI_MIXER_MAIN
)
365 int sti_crtc_init(struct drm_device
*drm_dev
, struct sti_mixer
*mixer
,
366 struct drm_plane
*primary
, struct drm_plane
*cursor
)
368 struct drm_crtc
*crtc
= &mixer
->drm_crtc
;
371 res
= drm_crtc_init_with_planes(drm_dev
, crtc
, primary
, cursor
,
372 &sti_crtc_funcs
, NULL
);
374 DRM_ERROR("Can't initialze CRTC\n");
378 drm_crtc_helper_add(crtc
, &sti_crtc_helper_funcs
);
380 DRM_DEBUG_DRIVER("drm CRTC:%d mapped to %s\n",
381 crtc
->base
.id
, sti_mixer_to_str(mixer
));