2 * drivers/gpu/drm/omapdrm/omap_crtc.c
4 * Copyright (C) 2011 Texas Instruments
5 * Author: Rob Clark <rob@ti.com>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published by
9 * the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program. If not, see <http://www.gnu.org/licenses/>.
22 #include <drm/drm_mode.h>
24 #include "drm_crtc_helper.h"
26 #define to_omap_crtc(x) container_of(x, struct omap_crtc, base)
30 struct drm_plane
*plane
;
34 enum omap_channel channel
;
35 struct omap_overlay_manager_info info
;
38 * Temporary: eventually this will go away, but it is needed
39 * for now to keep the output's happy. (They only need
40 * mgr->id.) Eventually this will be replaced w/ something
41 * more common-panel-framework-y
43 struct omap_overlay_manager
*mgr
;
45 struct omap_video_timings timings
;
49 struct omap_drm_apply apply
;
51 struct omap_drm_irq apply_irq
;
52 struct omap_drm_irq error_irq
;
54 /* list of in-progress apply's: */
55 struct list_head pending_applies
;
57 /* list of queued apply's: */
58 struct list_head queued_applies
;
60 /* for handling queued and in-progress applies: */
61 struct work_struct apply_work
;
63 /* if there is a pending flip, these will be non-null: */
64 struct drm_pending_vblank_event
*event
;
65 struct drm_framebuffer
*old_fb
;
67 /* for handling page flips without caring about what
68 * the callback is called from. Possibly we should just
69 * make omap_gem always call the cb from the worker so
70 * we don't have to care about this..
72 * XXX maybe fold into apply_work??
74 struct work_struct page_flip_work
;
77 uint32_t pipe2vbl(struct drm_crtc
*crtc
)
79 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
81 return dispc_mgr_get_vsync_irq(omap_crtc
->channel
);
85 * Manager-ops, callbacks from output when they need to configure
86 * the upstream part of the video pipe.
88 * Most of these we can ignore until we add support for command-mode
89 * panels.. for video-mode the crtc-helpers already do an adequate
90 * job of sequencing the setup of the video pipe in the proper order
93 /* ovl-mgr-id -> crtc */
94 static struct omap_crtc
*omap_crtcs
[8];
96 /* we can probably ignore these until we support command-mode panels: */
97 static int omap_crtc_connect(struct omap_overlay_manager
*mgr
,
98 struct omap_dss_device
*dst
)
103 if ((mgr
->supported_outputs
& dst
->id
) == 0)
112 static void omap_crtc_disconnect(struct omap_overlay_manager
*mgr
,
113 struct omap_dss_device
*dst
)
115 mgr
->output
->manager
= NULL
;
119 static void omap_crtc_start_update(struct omap_overlay_manager
*mgr
)
123 static int omap_crtc_enable(struct omap_overlay_manager
*mgr
)
128 static void omap_crtc_disable(struct omap_overlay_manager
*mgr
)
132 static void omap_crtc_set_timings(struct omap_overlay_manager
*mgr
,
133 const struct omap_video_timings
*timings
)
135 struct omap_crtc
*omap_crtc
= omap_crtcs
[mgr
->id
];
136 DBG("%s", omap_crtc
->name
);
137 omap_crtc
->timings
= *timings
;
138 omap_crtc
->full_update
= true;
141 static void omap_crtc_set_lcd_config(struct omap_overlay_manager
*mgr
,
142 const struct dss_lcd_mgr_config
*config
)
144 struct omap_crtc
*omap_crtc
= omap_crtcs
[mgr
->id
];
145 DBG("%s", omap_crtc
->name
);
146 dispc_mgr_set_lcd_config(omap_crtc
->channel
, config
);
149 static int omap_crtc_register_framedone_handler(
150 struct omap_overlay_manager
*mgr
,
151 void (*handler
)(void *), void *data
)
156 static void omap_crtc_unregister_framedone_handler(
157 struct omap_overlay_manager
*mgr
,
158 void (*handler
)(void *), void *data
)
162 static const struct dss_mgr_ops mgr_ops
= {
163 .connect
= omap_crtc_connect
,
164 .disconnect
= omap_crtc_disconnect
,
165 .start_update
= omap_crtc_start_update
,
166 .enable
= omap_crtc_enable
,
167 .disable
= omap_crtc_disable
,
168 .set_timings
= omap_crtc_set_timings
,
169 .set_lcd_config
= omap_crtc_set_lcd_config
,
170 .register_framedone_handler
= omap_crtc_register_framedone_handler
,
171 .unregister_framedone_handler
= omap_crtc_unregister_framedone_handler
,
178 static void omap_crtc_destroy(struct drm_crtc
*crtc
)
180 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
182 DBG("%s", omap_crtc
->name
);
184 WARN_ON(omap_crtc
->apply_irq
.registered
);
185 omap_irq_unregister(crtc
->dev
, &omap_crtc
->error_irq
);
187 omap_crtc
->plane
->funcs
->destroy(omap_crtc
->plane
);
188 drm_crtc_cleanup(crtc
);
193 static void omap_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
195 struct omap_drm_private
*priv
= crtc
->dev
->dev_private
;
196 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
197 bool enabled
= (mode
== DRM_MODE_DPMS_ON
);
200 DBG("%s: %d", omap_crtc
->name
, mode
);
202 if (enabled
!= omap_crtc
->enabled
) {
203 omap_crtc
->enabled
= enabled
;
204 omap_crtc
->full_update
= true;
205 omap_crtc_apply(crtc
, &omap_crtc
->apply
);
207 /* also enable our private plane: */
208 WARN_ON(omap_plane_dpms(omap_crtc
->plane
, mode
));
210 /* and any attached overlay planes: */
211 for (i
= 0; i
< priv
->num_planes
; i
++) {
212 struct drm_plane
*plane
= priv
->planes
[i
];
213 if (plane
->crtc
== crtc
)
214 WARN_ON(omap_plane_dpms(plane
, mode
));
219 static bool omap_crtc_mode_fixup(struct drm_crtc
*crtc
,
220 const struct drm_display_mode
*mode
,
221 struct drm_display_mode
*adjusted_mode
)
226 static int omap_crtc_mode_set(struct drm_crtc
*crtc
,
227 struct drm_display_mode
*mode
,
228 struct drm_display_mode
*adjusted_mode
,
230 struct drm_framebuffer
*old_fb
)
232 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
234 mode
= adjusted_mode
;
236 DBG("%s: set mode: %d:\"%s\" %d %d %d %d %d %d %d %d %d %d 0x%x 0x%x",
237 omap_crtc
->name
, mode
->base
.id
, mode
->name
,
238 mode
->vrefresh
, mode
->clock
,
239 mode
->hdisplay
, mode
->hsync_start
,
240 mode
->hsync_end
, mode
->htotal
,
241 mode
->vdisplay
, mode
->vsync_start
,
242 mode
->vsync_end
, mode
->vtotal
,
243 mode
->type
, mode
->flags
);
245 copy_timings_drm_to_omap(&omap_crtc
->timings
, mode
);
246 omap_crtc
->full_update
= true;
248 return omap_plane_mode_set(omap_crtc
->plane
, crtc
, crtc
->primary
->fb
,
249 0, 0, mode
->hdisplay
, mode
->vdisplay
,
251 mode
->hdisplay
<< 16, mode
->vdisplay
<< 16,
255 static void omap_crtc_prepare(struct drm_crtc
*crtc
)
257 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
258 DBG("%s", omap_crtc
->name
);
259 omap_crtc_dpms(crtc
, DRM_MODE_DPMS_OFF
);
262 static void omap_crtc_commit(struct drm_crtc
*crtc
)
264 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
265 DBG("%s", omap_crtc
->name
);
266 omap_crtc_dpms(crtc
, DRM_MODE_DPMS_ON
);
269 static int omap_crtc_mode_set_base(struct drm_crtc
*crtc
, int x
, int y
,
270 struct drm_framebuffer
*old_fb
)
272 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
273 struct drm_plane
*plane
= omap_crtc
->plane
;
274 struct drm_display_mode
*mode
= &crtc
->mode
;
276 return omap_plane_mode_set(plane
, crtc
, crtc
->primary
->fb
,
277 0, 0, mode
->hdisplay
, mode
->vdisplay
,
279 mode
->hdisplay
<< 16, mode
->vdisplay
<< 16,
283 static void vblank_cb(void *arg
)
285 struct drm_crtc
*crtc
= arg
;
286 struct drm_device
*dev
= crtc
->dev
;
287 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
290 spin_lock_irqsave(&dev
->event_lock
, flags
);
292 /* wakeup userspace */
293 if (omap_crtc
->event
)
294 drm_send_vblank_event(dev
, omap_crtc
->pipe
, omap_crtc
->event
);
296 omap_crtc
->event
= NULL
;
297 omap_crtc
->old_fb
= NULL
;
299 spin_unlock_irqrestore(&dev
->event_lock
, flags
);
302 static void page_flip_worker(struct work_struct
*work
)
304 struct omap_crtc
*omap_crtc
=
305 container_of(work
, struct omap_crtc
, page_flip_work
);
306 struct drm_crtc
*crtc
= &omap_crtc
->base
;
307 struct drm_display_mode
*mode
= &crtc
->mode
;
308 struct drm_gem_object
*bo
;
310 mutex_lock(&crtc
->mutex
);
311 omap_plane_mode_set(omap_crtc
->plane
, crtc
, crtc
->primary
->fb
,
312 0, 0, mode
->hdisplay
, mode
->vdisplay
,
313 crtc
->x
<< 16, crtc
->y
<< 16,
314 mode
->hdisplay
<< 16, mode
->vdisplay
<< 16,
316 mutex_unlock(&crtc
->mutex
);
318 bo
= omap_framebuffer_bo(crtc
->primary
->fb
, 0);
319 drm_gem_object_unreference_unlocked(bo
);
322 static void page_flip_cb(void *arg
)
324 struct drm_crtc
*crtc
= arg
;
325 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
326 struct omap_drm_private
*priv
= crtc
->dev
->dev_private
;
328 /* avoid assumptions about what ctxt we are called from: */
329 queue_work(priv
->wq
, &omap_crtc
->page_flip_work
);
332 static int omap_crtc_page_flip_locked(struct drm_crtc
*crtc
,
333 struct drm_framebuffer
*fb
,
334 struct drm_pending_vblank_event
*event
,
335 uint32_t page_flip_flags
)
337 struct drm_device
*dev
= crtc
->dev
;
338 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
339 struct drm_plane
*primary
= crtc
->primary
;
340 struct drm_gem_object
*bo
;
342 DBG("%d -> %d (event=%p)", primary
->fb
? primary
->fb
->base
.id
: -1,
345 if (omap_crtc
->old_fb
) {
346 dev_err(dev
->dev
, "already a pending flip\n");
350 omap_crtc
->event
= event
;
354 * Hold a reference temporarily until the crtc is updated
355 * and takes the reference to the bo. This avoids it
356 * getting freed from under us:
358 bo
= omap_framebuffer_bo(fb
, 0);
359 drm_gem_object_reference(bo
);
361 omap_gem_op_async(bo
, OMAP_GEM_READ
, page_flip_cb
, crtc
);
366 static int omap_crtc_set_property(struct drm_crtc
*crtc
,
367 struct drm_property
*property
, uint64_t val
)
369 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
370 struct omap_drm_private
*priv
= crtc
->dev
->dev_private
;
372 if (property
== priv
->rotation_prop
) {
373 crtc
->invert_dimensions
=
374 !!(val
& ((1LL << DRM_ROTATE_90
) | (1LL << DRM_ROTATE_270
)));
377 return omap_plane_set_property(omap_crtc
->plane
, property
, val
);
380 static const struct drm_crtc_funcs omap_crtc_funcs
= {
381 .set_config
= drm_crtc_helper_set_config
,
382 .destroy
= omap_crtc_destroy
,
383 .page_flip
= omap_crtc_page_flip_locked
,
384 .set_property
= omap_crtc_set_property
,
387 static const struct drm_crtc_helper_funcs omap_crtc_helper_funcs
= {
388 .dpms
= omap_crtc_dpms
,
389 .mode_fixup
= omap_crtc_mode_fixup
,
390 .mode_set
= omap_crtc_mode_set
,
391 .prepare
= omap_crtc_prepare
,
392 .commit
= omap_crtc_commit
,
393 .mode_set_base
= omap_crtc_mode_set_base
,
396 const struct omap_video_timings
*omap_crtc_timings(struct drm_crtc
*crtc
)
398 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
399 return &omap_crtc
->timings
;
402 enum omap_channel
omap_crtc_channel(struct drm_crtc
*crtc
)
404 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
405 return omap_crtc
->channel
;
408 static void omap_crtc_error_irq(struct omap_drm_irq
*irq
, uint32_t irqstatus
)
410 struct omap_crtc
*omap_crtc
=
411 container_of(irq
, struct omap_crtc
, error_irq
);
412 struct drm_crtc
*crtc
= &omap_crtc
->base
;
413 DRM_ERROR("%s: errors: %08x\n", omap_crtc
->name
, irqstatus
);
414 /* avoid getting in a flood, unregister the irq until next vblank */
415 __omap_irq_unregister(crtc
->dev
, &omap_crtc
->error_irq
);
418 static void omap_crtc_apply_irq(struct omap_drm_irq
*irq
, uint32_t irqstatus
)
420 struct omap_crtc
*omap_crtc
=
421 container_of(irq
, struct omap_crtc
, apply_irq
);
422 struct drm_crtc
*crtc
= &omap_crtc
->base
;
424 if (!omap_crtc
->error_irq
.registered
)
425 __omap_irq_register(crtc
->dev
, &omap_crtc
->error_irq
);
427 if (!dispc_mgr_go_busy(omap_crtc
->channel
)) {
428 struct omap_drm_private
*priv
=
429 crtc
->dev
->dev_private
;
430 DBG("%s: apply done", omap_crtc
->name
);
431 __omap_irq_unregister(crtc
->dev
, &omap_crtc
->apply_irq
);
432 queue_work(priv
->wq
, &omap_crtc
->apply_work
);
436 static void apply_worker(struct work_struct
*work
)
438 struct omap_crtc
*omap_crtc
=
439 container_of(work
, struct omap_crtc
, apply_work
);
440 struct drm_crtc
*crtc
= &omap_crtc
->base
;
441 struct drm_device
*dev
= crtc
->dev
;
442 struct omap_drm_apply
*apply
, *n
;
446 * Synchronize everything on mode_config.mutex, to keep
447 * the callbacks and list modification all serialized
448 * with respect to modesetting ioctls from userspace.
450 mutex_lock(&crtc
->mutex
);
454 * If we are still pending a previous update, wait.. when the
455 * pending update completes, we get kicked again.
457 if (omap_crtc
->apply_irq
.registered
)
460 /* finish up previous apply's: */
461 list_for_each_entry_safe(apply
, n
,
462 &omap_crtc
->pending_applies
, pending_node
) {
463 apply
->post_apply(apply
);
464 list_del(&apply
->pending_node
);
467 need_apply
= !list_empty(&omap_crtc
->queued_applies
);
469 /* then handle the next round of of queued apply's: */
470 list_for_each_entry_safe(apply
, n
,
471 &omap_crtc
->queued_applies
, queued_node
) {
472 apply
->pre_apply(apply
);
473 list_del(&apply
->queued_node
);
474 apply
->queued
= false;
475 list_add_tail(&apply
->pending_node
,
476 &omap_crtc
->pending_applies
);
480 enum omap_channel channel
= omap_crtc
->channel
;
482 DBG("%s: GO", omap_crtc
->name
);
484 if (dispc_mgr_is_enabled(channel
)) {
485 omap_irq_register(dev
, &omap_crtc
->apply_irq
);
486 dispc_mgr_go(channel
);
488 struct omap_drm_private
*priv
= dev
->dev_private
;
489 queue_work(priv
->wq
, &omap_crtc
->apply_work
);
495 mutex_unlock(&crtc
->mutex
);
498 int omap_crtc_apply(struct drm_crtc
*crtc
,
499 struct omap_drm_apply
*apply
)
501 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
503 WARN_ON(!mutex_is_locked(&crtc
->mutex
));
505 /* no need to queue it again if it is already queued: */
509 apply
->queued
= true;
510 list_add_tail(&apply
->queued_node
, &omap_crtc
->queued_applies
);
513 * If there are no currently pending updates, then go ahead and
514 * kick the worker immediately, otherwise it will run again when
515 * the current update finishes.
517 if (list_empty(&omap_crtc
->pending_applies
)) {
518 struct omap_drm_private
*priv
= crtc
->dev
->dev_private
;
519 queue_work(priv
->wq
, &omap_crtc
->apply_work
);
525 /* called only from apply */
526 static void set_enabled(struct drm_crtc
*crtc
, bool enable
)
528 struct drm_device
*dev
= crtc
->dev
;
529 struct omap_crtc
*omap_crtc
= to_omap_crtc(crtc
);
530 enum omap_channel channel
= omap_crtc
->channel
;
531 struct omap_irq_wait
*wait
= NULL
;
533 if (dispc_mgr_is_enabled(channel
) == enable
)
536 /* ignore sync-lost irqs during enable/disable */
537 omap_irq_unregister(crtc
->dev
, &omap_crtc
->error_irq
);
539 if (dispc_mgr_get_framedone_irq(channel
)) {
541 wait
= omap_irq_wait_init(dev
,
542 dispc_mgr_get_framedone_irq(channel
), 1);
546 * When we disable digit output, we need to wait until fields
547 * are done. Otherwise the DSS is still working, and turning
548 * off the clocks prevents DSS from going to OFF mode. And when
549 * enabling, we need to wait for the extra sync losts
551 wait
= omap_irq_wait_init(dev
,
552 dispc_mgr_get_vsync_irq(channel
), 2);
555 dispc_mgr_enable(channel
, enable
);
558 int ret
= omap_irq_wait(dev
, wait
, msecs_to_jiffies(100));
560 dev_err(dev
->dev
, "%s: timeout waiting for %s\n",
561 omap_crtc
->name
, enable
? "enable" : "disable");
565 omap_irq_register(crtc
->dev
, &omap_crtc
->error_irq
);
568 static void omap_crtc_pre_apply(struct omap_drm_apply
*apply
)
570 struct omap_crtc
*omap_crtc
=
571 container_of(apply
, struct omap_crtc
, apply
);
572 struct drm_crtc
*crtc
= &omap_crtc
->base
;
573 struct drm_encoder
*encoder
= NULL
;
575 DBG("%s: enabled=%d, full=%d", omap_crtc
->name
,
576 omap_crtc
->enabled
, omap_crtc
->full_update
);
578 if (omap_crtc
->full_update
) {
579 struct omap_drm_private
*priv
= crtc
->dev
->dev_private
;
581 for (i
= 0; i
< priv
->num_encoders
; i
++) {
582 if (priv
->encoders
[i
]->crtc
== crtc
) {
583 encoder
= priv
->encoders
[i
];
589 if (!omap_crtc
->enabled
) {
590 set_enabled(&omap_crtc
->base
, false);
592 omap_encoder_set_enabled(encoder
, false);
595 omap_encoder_set_enabled(encoder
, false);
596 omap_encoder_update(encoder
, omap_crtc
->mgr
,
597 &omap_crtc
->timings
);
598 omap_encoder_set_enabled(encoder
, true);
599 omap_crtc
->full_update
= false;
602 dispc_mgr_setup(omap_crtc
->channel
, &omap_crtc
->info
);
603 dispc_mgr_set_timings(omap_crtc
->channel
,
604 &omap_crtc
->timings
);
605 set_enabled(&omap_crtc
->base
, true);
608 omap_crtc
->full_update
= false;
611 static void omap_crtc_post_apply(struct omap_drm_apply
*apply
)
613 /* nothing needed for post-apply */
616 static const char *channel_names
[] = {
617 [OMAP_DSS_CHANNEL_LCD
] = "lcd",
618 [OMAP_DSS_CHANNEL_DIGIT
] = "tv",
619 [OMAP_DSS_CHANNEL_LCD2
] = "lcd2",
622 void omap_crtc_pre_init(void)
624 dss_install_mgr_ops(&mgr_ops
);
627 void omap_crtc_pre_uninit(void)
629 dss_uninstall_mgr_ops();
632 /* initialize crtc */
633 struct drm_crtc
*omap_crtc_init(struct drm_device
*dev
,
634 struct drm_plane
*plane
, enum omap_channel channel
, int id
)
636 struct drm_crtc
*crtc
= NULL
;
637 struct omap_crtc
*omap_crtc
;
638 struct omap_overlay_manager_info
*info
;
640 DBG("%s", channel_names
[channel
]);
642 omap_crtc
= kzalloc(sizeof(*omap_crtc
), GFP_KERNEL
);
646 crtc
= &omap_crtc
->base
;
648 INIT_WORK(&omap_crtc
->page_flip_work
, page_flip_worker
);
649 INIT_WORK(&omap_crtc
->apply_work
, apply_worker
);
651 INIT_LIST_HEAD(&omap_crtc
->pending_applies
);
652 INIT_LIST_HEAD(&omap_crtc
->queued_applies
);
654 omap_crtc
->apply
.pre_apply
= omap_crtc_pre_apply
;
655 omap_crtc
->apply
.post_apply
= omap_crtc_post_apply
;
657 omap_crtc
->channel
= channel
;
658 omap_crtc
->plane
= plane
;
659 omap_crtc
->plane
->crtc
= crtc
;
660 omap_crtc
->name
= channel_names
[channel
];
661 omap_crtc
->pipe
= id
;
663 omap_crtc
->apply_irq
.irqmask
= pipe2vbl(crtc
);
664 omap_crtc
->apply_irq
.irq
= omap_crtc_apply_irq
;
666 omap_crtc
->error_irq
.irqmask
=
667 dispc_mgr_get_sync_lost_irq(channel
);
668 omap_crtc
->error_irq
.irq
= omap_crtc_error_irq
;
669 omap_irq_register(dev
, &omap_crtc
->error_irq
);
672 omap_crtc
->mgr
= omap_dss_get_overlay_manager(channel
);
674 /* TODO: fix hard-coded setup.. add properties! */
675 info
= &omap_crtc
->info
;
676 info
->default_color
= 0x00000000;
677 info
->trans_key
= 0x00000000;
678 info
->trans_key_type
= OMAP_DSS_COLOR_KEY_GFX_DST
;
679 info
->trans_enabled
= false;
681 drm_crtc_init(dev
, crtc
, &omap_crtc_funcs
);
682 drm_crtc_helper_add(crtc
, &omap_crtc_helper_funcs
);
684 omap_plane_install_properties(omap_crtc
->plane
, &crtc
->base
);
686 omap_crtcs
[channel
] = omap_crtc
;
692 omap_crtc_destroy(crtc
);