2 * Copyright (C) 2011 Texas Instruments
3 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
18 #define DSS_SUBSYS_NAME "APPLY"
20 #include <linux/kernel.h>
21 #include <linux/slab.h>
22 #include <linux/spinlock.h>
23 #include <linux/jiffies.h>
25 #include <video/omapdss.h>
28 #include "dss_features.h"
31 * We have 4 levels of cache for the dispc settings. First two are in SW and
32 * the latter two in HW.
36 * +--------------------+
38 * +--------------------+
42 * +--------------------+
44 * +--------------------+
48 * +--------------------+
49 * | shadow registers |
50 * +--------------------+
52 * VFP or lcd/digit_enable
54 * +--------------------+
56 * +--------------------+
59 struct ovl_priv_data {
62 struct omap_overlay_info user_info;
65 struct omap_overlay_info info;
67 bool shadow_info_dirty;
69 bool extra_info_dirty;
70 bool shadow_extra_info_dirty;
73 enum omap_channel channel;
74 u32 fifo_low, fifo_high;
77 * True if overlay is to be enabled. Used to check and calculate configs
78 * for the overlay before it is enabled in the HW.
83 struct mgr_priv_data {
86 struct omap_overlay_manager_info user_info;
89 struct omap_overlay_manager_info info;
91 bool shadow_info_dirty;
93 /* If true, GO bit is up and shadow registers cannot be written.
94 * Never true for manual update displays */
97 /* If true, dispc output is enabled */
100 /* If true, a display is enabled using this manager */
105 struct ovl_priv_data ovl_priv_data_array[MAX_DSS_OVERLAYS];
106 struct mgr_priv_data mgr_priv_data_array[MAX_DSS_MANAGERS];
108 bool fifo_merge_dirty;
114 /* protects dss_data */
115 static spinlock_t data_lock;
116 /* lock for blocking functions */
117 static DEFINE_MUTEX(apply_lock);
118 static DECLARE_COMPLETION(extra_updated_completion);
120 static void dss_register_vsync_isr(void);
122 static struct ovl_priv_data *get_ovl_priv(struct omap_overlay *ovl)
124 return &dss_data.ovl_priv_data_array[ovl->id];
127 static struct mgr_priv_data *get_mgr_priv(struct omap_overlay_manager *mgr)
129 return &dss_data.mgr_priv_data_array[mgr->id];
132 void dss_apply_init(void)
134 const int num_ovls = dss_feat_get_num_ovls();
137 spin_lock_init(&data_lock);
139 for (i = 0; i < num_ovls; ++i) {
140 struct ovl_priv_data *op;
142 op = &dss_data.ovl_priv_data_array[i];
144 op->info.global_alpha = 255;
152 dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 3 : 0;
156 dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 2 : 0;
160 dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 1 : 0;
164 op->user_info = op->info;
168 static bool ovl_manual_update(struct omap_overlay *ovl)
170 return ovl->manager->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
173 static bool mgr_manual_update(struct omap_overlay_manager *mgr)
175 return mgr->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
178 static int dss_check_settings_low(struct omap_overlay_manager *mgr,
179 struct omap_dss_device *dssdev, bool applying)
181 struct omap_overlay_info *oi;
182 struct omap_overlay_manager_info *mi;
183 struct omap_overlay *ovl;
184 struct omap_overlay_info *ois[MAX_DSS_OVERLAYS];
185 struct ovl_priv_data *op;
186 struct mgr_priv_data *mp;
188 mp = get_mgr_priv(mgr);
190 if (applying && mp->user_info_dirty)
195 /* collect the infos to be tested into the array */
196 list_for_each_entry(ovl, &mgr->overlays, list) {
197 op = get_ovl_priv(ovl);
199 if (!op->enabled && !op->enabling)
201 else if (applying && op->user_info_dirty)
209 return dss_mgr_check(mgr, dssdev, mi, ois);
213 * check manager and overlay settings using overlay_info from data->info
215 static int dss_check_settings(struct omap_overlay_manager *mgr,
216 struct omap_dss_device *dssdev)
218 return dss_check_settings_low(mgr, dssdev, false);
222 * check manager and overlay settings using overlay_info from ovl->info if
223 * dirty and from data->info otherwise
225 static int dss_check_settings_apply(struct omap_overlay_manager *mgr,
226 struct omap_dss_device *dssdev)
228 return dss_check_settings_low(mgr, dssdev, true);
231 static bool need_isr(void)
233 const int num_mgrs = dss_feat_get_num_mgrs();
236 for (i = 0; i < num_mgrs; ++i) {
237 struct omap_overlay_manager *mgr;
238 struct mgr_priv_data *mp;
239 struct omap_overlay *ovl;
241 mgr = omap_dss_get_overlay_manager(i);
242 mp = get_mgr_priv(mgr);
247 if (mgr_manual_update(mgr)) {
248 /* to catch FRAMEDONE */
252 /* to catch GO bit going down */
256 /* to write new values to registers */
261 if (mp->shadow_info_dirty)
264 list_for_each_entry(ovl, &mgr->overlays, list) {
265 struct ovl_priv_data *op;
267 op = get_ovl_priv(ovl);
270 * NOTE: we check extra_info flags even for
271 * disabled overlays, as extra_infos need to be
275 /* to write new values to registers */
276 if (op->extra_info_dirty)
280 if (op->shadow_extra_info_dirty)
286 /* to write new values to registers */
291 if (op->shadow_info_dirty)
300 static bool need_go(struct omap_overlay_manager *mgr)
302 struct omap_overlay *ovl;
303 struct mgr_priv_data *mp;
304 struct ovl_priv_data *op;
306 mp = get_mgr_priv(mgr);
308 if (mp->shadow_info_dirty)
311 list_for_each_entry(ovl, &mgr->overlays, list) {
312 op = get_ovl_priv(ovl);
313 if (op->shadow_info_dirty || op->shadow_extra_info_dirty)
320 /* returns true if an extra_info field is currently being updated */
321 static bool extra_info_update_ongoing(void)
323 const int num_ovls = omap_dss_get_num_overlays();
324 struct ovl_priv_data *op;
325 struct omap_overlay *ovl;
326 struct mgr_priv_data *mp;
329 for (i = 0; i < num_ovls; ++i) {
330 ovl = omap_dss_get_overlay(i);
331 op = get_ovl_priv(ovl);
336 mp = get_mgr_priv(ovl->manager);
344 if (op->extra_info_dirty || op->shadow_extra_info_dirty)
351 /* wait until no extra_info updates are pending */
352 static void wait_pending_extra_info_updates(void)
359 spin_lock_irqsave(&data_lock, flags);
361 updating = extra_info_update_ongoing();
364 spin_unlock_irqrestore(&data_lock, flags);
368 init_completion(&extra_updated_completion);
370 spin_unlock_irqrestore(&data_lock, flags);
372 t = msecs_to_jiffies(500);
373 r = wait_for_completion_timeout(&extra_updated_completion, t);
375 DSSWARN("timeout in wait_pending_extra_info_updates\n");
377 DSSERR("wait_pending_extra_info_updates failed: %d\n", r);
380 int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
382 unsigned long timeout = msecs_to_jiffies(500);
383 struct mgr_priv_data *mp;
387 struct omap_dss_device *dssdev = mgr->device;
389 if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
392 if (mgr_manual_update(mgr))
395 r = dispc_runtime_get();
399 irq = dispc_mgr_get_vsync_irq(mgr->id);
401 mp = get_mgr_priv(mgr);
405 bool shadow_dirty, dirty;
407 spin_lock_irqsave(&data_lock, flags);
408 dirty = mp->info_dirty;
409 shadow_dirty = mp->shadow_info_dirty;
410 spin_unlock_irqrestore(&data_lock, flags);
412 if (!dirty && !shadow_dirty) {
417 /* 4 iterations is the worst case:
418 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
419 * 2 - first VSYNC, dirty = true
420 * 3 - dirty = false, shadow_dirty = true
421 * 4 - shadow_dirty = false */
423 DSSERR("mgr(%d)->wait_for_go() not finishing\n",
429 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
430 if (r == -ERESTARTSYS)
434 DSSERR("mgr(%d)->wait_for_go() timeout\n", mgr->id);
444 int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
446 unsigned long timeout = msecs_to_jiffies(500);
447 struct ovl_priv_data *op;
448 struct omap_dss_device *dssdev;
456 dssdev = ovl->manager->device;
458 if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
461 if (ovl_manual_update(ovl))
464 r = dispc_runtime_get();
468 irq = dispc_mgr_get_vsync_irq(ovl->manager->id);
470 op = get_ovl_priv(ovl);
474 bool shadow_dirty, dirty;
476 spin_lock_irqsave(&data_lock, flags);
477 dirty = op->info_dirty;
478 shadow_dirty = op->shadow_info_dirty;
479 spin_unlock_irqrestore(&data_lock, flags);
481 if (!dirty && !shadow_dirty) {
486 /* 4 iterations is the worst case:
487 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
488 * 2 - first VSYNC, dirty = true
489 * 3 - dirty = false, shadow_dirty = true
490 * 4 - shadow_dirty = false */
492 DSSERR("ovl(%d)->wait_for_go() not finishing\n",
498 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
499 if (r == -ERESTARTSYS)
503 DSSERR("ovl(%d)->wait_for_go() timeout\n", ovl->id);
513 static void dss_ovl_write_regs(struct omap_overlay *ovl)
515 struct ovl_priv_data *op = get_ovl_priv(ovl);
516 struct omap_overlay_info *oi;
517 bool ilace, replication;
518 struct mgr_priv_data *mp;
521 DSSDBGF("%d", ovl->id);
523 if (!op->enabled || !op->info_dirty)
528 replication = dss_use_replication(ovl->manager->device, oi->color_mode);
530 ilace = ovl->manager->device->type == OMAP_DISPLAY_TYPE_VENC;
532 r = dispc_ovl_setup(ovl->id, oi, ilace, replication);
535 * We can't do much here, as this function can be called from
538 DSSERR("dispc_ovl_setup failed for ovl %d\n", ovl->id);
540 /* This will leave fifo configurations in a nonoptimal state */
542 dispc_ovl_enable(ovl->id, false);
546 mp = get_mgr_priv(ovl->manager);
548 op->info_dirty = false;
550 op->shadow_info_dirty = true;
553 static void dss_ovl_write_regs_extra(struct omap_overlay *ovl)
555 struct ovl_priv_data *op = get_ovl_priv(ovl);
556 struct mgr_priv_data *mp;
558 DSSDBGF("%d", ovl->id);
560 if (!op->extra_info_dirty)
563 /* note: write also when op->enabled == false, so that the ovl gets
566 dispc_ovl_enable(ovl->id, op->enabled);
567 dispc_ovl_set_channel_out(ovl->id, op->channel);
568 dispc_ovl_set_fifo_threshold(ovl->id, op->fifo_low, op->fifo_high);
570 mp = get_mgr_priv(ovl->manager);
572 op->extra_info_dirty = false;
574 op->shadow_extra_info_dirty = true;
577 static void dss_mgr_write_regs(struct omap_overlay_manager *mgr)
579 struct mgr_priv_data *mp = get_mgr_priv(mgr);
580 struct omap_overlay *ovl;
582 DSSDBGF("%d", mgr->id);
589 /* Commit overlay settings */
590 list_for_each_entry(ovl, &mgr->overlays, list) {
591 dss_ovl_write_regs(ovl);
592 dss_ovl_write_regs_extra(ovl);
595 if (mp->info_dirty) {
596 dispc_mgr_setup(mgr->id, &mp->info);
598 mp->info_dirty = false;
600 mp->shadow_info_dirty = true;
604 static void dss_write_regs_common(void)
606 const int num_mgrs = omap_dss_get_num_overlay_managers();
609 if (!dss_data.fifo_merge_dirty)
612 for (i = 0; i < num_mgrs; ++i) {
613 struct omap_overlay_manager *mgr;
614 struct mgr_priv_data *mp;
616 mgr = omap_dss_get_overlay_manager(i);
617 mp = get_mgr_priv(mgr);
620 if (dss_data.fifo_merge_dirty) {
621 dispc_enable_fifomerge(dss_data.fifo_merge);
622 dss_data.fifo_merge_dirty = false;
626 mp->shadow_info_dirty = true;
631 static void dss_write_regs(void)
633 const int num_mgrs = omap_dss_get_num_overlay_managers();
636 dss_write_regs_common();
638 for (i = 0; i < num_mgrs; ++i) {
639 struct omap_overlay_manager *mgr;
640 struct mgr_priv_data *mp;
643 mgr = omap_dss_get_overlay_manager(i);
644 mp = get_mgr_priv(mgr);
646 if (!mp->enabled || mgr_manual_update(mgr) || mp->busy)
649 r = dss_check_settings(mgr, mgr->device);
651 DSSERR("cannot write registers for manager %s: "
652 "illegal configuration\n", mgr->name);
656 dss_mgr_write_regs(mgr);
660 static void dss_set_go_bits(void)
662 const int num_mgrs = omap_dss_get_num_overlay_managers();
665 for (i = 0; i < num_mgrs; ++i) {
666 struct omap_overlay_manager *mgr;
667 struct mgr_priv_data *mp;
669 mgr = omap_dss_get_overlay_manager(i);
670 mp = get_mgr_priv(mgr);
672 if (!mp->enabled || mgr_manual_update(mgr) || mp->busy)
680 if (!dss_data.irq_enabled && need_isr())
681 dss_register_vsync_isr();
683 dispc_mgr_go(mgr->id);
688 static void mgr_clear_shadow_dirty(struct omap_overlay_manager *mgr)
690 struct omap_overlay *ovl;
691 struct mgr_priv_data *mp;
692 struct ovl_priv_data *op;
694 mp = get_mgr_priv(mgr);
695 mp->shadow_info_dirty = false;
697 list_for_each_entry(ovl, &mgr->overlays, list) {
698 op = get_ovl_priv(ovl);
699 op->shadow_info_dirty = false;
700 op->shadow_extra_info_dirty = false;
704 void dss_mgr_start_update(struct omap_overlay_manager *mgr)
706 struct mgr_priv_data *mp = get_mgr_priv(mgr);
710 spin_lock_irqsave(&data_lock, flags);
712 WARN_ON(mp->updating);
714 r = dss_check_settings(mgr, mgr->device);
716 DSSERR("cannot start manual update: illegal configuration\n");
717 spin_unlock_irqrestore(&data_lock, flags);
721 dss_mgr_write_regs(mgr);
723 dss_write_regs_common();
727 if (!dss_data.irq_enabled && need_isr())
728 dss_register_vsync_isr();
730 dispc_mgr_enable(mgr->id, true);
732 mgr_clear_shadow_dirty(mgr);
734 spin_unlock_irqrestore(&data_lock, flags);
737 static void dss_apply_irq_handler(void *data, u32 mask);
739 static void dss_register_vsync_isr(void)
741 const int num_mgrs = dss_feat_get_num_mgrs();
746 for (i = 0; i < num_mgrs; ++i)
747 mask |= dispc_mgr_get_vsync_irq(i);
749 for (i = 0; i < num_mgrs; ++i)
750 mask |= dispc_mgr_get_framedone_irq(i);
752 r = omap_dispc_register_isr(dss_apply_irq_handler, NULL, mask);
755 dss_data.irq_enabled = true;
758 static void dss_unregister_vsync_isr(void)
760 const int num_mgrs = dss_feat_get_num_mgrs();
765 for (i = 0; i < num_mgrs; ++i)
766 mask |= dispc_mgr_get_vsync_irq(i);
768 for (i = 0; i < num_mgrs; ++i)
769 mask |= dispc_mgr_get_framedone_irq(i);
771 r = omap_dispc_unregister_isr(dss_apply_irq_handler, NULL, mask);
774 dss_data.irq_enabled = false;
777 static void dss_apply_irq_handler(void *data, u32 mask)
779 const int num_mgrs = dss_feat_get_num_mgrs();
783 spin_lock(&data_lock);
785 /* clear busy, updating flags, shadow_dirty flags */
786 for (i = 0; i < num_mgrs; i++) {
787 struct omap_overlay_manager *mgr;
788 struct mgr_priv_data *mp;
791 mgr = omap_dss_get_overlay_manager(i);
792 mp = get_mgr_priv(mgr);
797 was_updating = mp->updating;
798 mp->updating = dispc_mgr_is_enabled(i);
800 if (!mgr_manual_update(mgr)) {
801 bool was_busy = mp->busy;
802 mp->busy = dispc_mgr_go_busy(i);
804 if (was_busy && !mp->busy)
805 mgr_clear_shadow_dirty(mgr);
812 extra_updating = extra_info_update_ongoing();
814 complete_all(&extra_updated_completion);
817 dss_unregister_vsync_isr();
819 spin_unlock(&data_lock);
822 static void omap_dss_mgr_apply_ovl(struct omap_overlay *ovl)
824 struct ovl_priv_data *op;
826 op = get_ovl_priv(ovl);
828 if (!op->user_info_dirty)
831 op->user_info_dirty = false;
832 op->info_dirty = true;
833 op->info = op->user_info;
836 static void omap_dss_mgr_apply_mgr(struct omap_overlay_manager *mgr)
838 struct mgr_priv_data *mp;
840 mp = get_mgr_priv(mgr);
842 if (!mp->user_info_dirty)
845 mp->user_info_dirty = false;
846 mp->info_dirty = true;
847 mp->info = mp->user_info;
850 int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
853 struct omap_overlay *ovl;
856 DSSDBG("omap_dss_mgr_apply(%s)\n", mgr->name);
858 spin_lock_irqsave(&data_lock, flags);
860 r = dss_check_settings_apply(mgr, mgr->device);
862 spin_unlock_irqrestore(&data_lock, flags);
863 DSSERR("failed to apply settings: illegal configuration.\n");
867 /* Configure overlays */
868 list_for_each_entry(ovl, &mgr->overlays, list)
869 omap_dss_mgr_apply_ovl(ovl);
871 /* Configure manager */
872 omap_dss_mgr_apply_mgr(mgr);
877 spin_unlock_irqrestore(&data_lock, flags);
882 static void dss_apply_ovl_enable(struct omap_overlay *ovl, bool enable)
884 struct ovl_priv_data *op;
886 op = get_ovl_priv(ovl);
888 if (op->enabled == enable)
891 op->enabled = enable;
892 op->extra_info_dirty = true;
895 static void dss_apply_ovl_fifo_thresholds(struct omap_overlay *ovl,
896 u32 fifo_low, u32 fifo_high)
898 struct ovl_priv_data *op = get_ovl_priv(ovl);
900 if (op->fifo_low == fifo_low && op->fifo_high == fifo_high)
903 op->fifo_low = fifo_low;
904 op->fifo_high = fifo_high;
905 op->extra_info_dirty = true;
908 static void dss_apply_fifo_merge(bool use_fifo_merge)
910 if (dss_data.fifo_merge == use_fifo_merge)
913 dss_data.fifo_merge = use_fifo_merge;
914 dss_data.fifo_merge_dirty = true;
917 static void dss_ovl_setup_fifo(struct omap_overlay *ovl,
920 struct ovl_priv_data *op = get_ovl_priv(ovl);
921 struct omap_dss_device *dssdev;
922 u32 fifo_low, fifo_high;
924 if (!op->enabled && !op->enabling)
927 dssdev = ovl->manager->device;
929 dispc_ovl_compute_fifo_thresholds(ovl->id, &fifo_low, &fifo_high,
932 dss_apply_ovl_fifo_thresholds(ovl, fifo_low, fifo_high);
935 static void dss_mgr_setup_fifos(struct omap_overlay_manager *mgr,
938 struct omap_overlay *ovl;
939 struct mgr_priv_data *mp;
941 mp = get_mgr_priv(mgr);
946 list_for_each_entry(ovl, &mgr->overlays, list)
947 dss_ovl_setup_fifo(ovl, use_fifo_merge);
950 static void dss_setup_fifos(bool use_fifo_merge)
952 const int num_mgrs = omap_dss_get_num_overlay_managers();
953 struct omap_overlay_manager *mgr;
956 for (i = 0; i < num_mgrs; ++i) {
957 mgr = omap_dss_get_overlay_manager(i);
958 dss_mgr_setup_fifos(mgr, use_fifo_merge);
962 static int get_num_used_managers(void)
964 const int num_mgrs = omap_dss_get_num_overlay_managers();
965 struct omap_overlay_manager *mgr;
966 struct mgr_priv_data *mp;
972 for (i = 0; i < num_mgrs; ++i) {
973 mgr = omap_dss_get_overlay_manager(i);
974 mp = get_mgr_priv(mgr);
985 static int get_num_used_overlays(void)
987 const int num_ovls = omap_dss_get_num_overlays();
988 struct omap_overlay *ovl;
989 struct ovl_priv_data *op;
990 struct mgr_priv_data *mp;
996 for (i = 0; i < num_ovls; ++i) {
997 ovl = omap_dss_get_overlay(i);
998 op = get_ovl_priv(ovl);
1000 if (!op->enabled && !op->enabling)
1003 mp = get_mgr_priv(ovl->manager);
1011 return enabled_ovls;
1014 static bool get_use_fifo_merge(void)
1016 int enabled_mgrs = get_num_used_managers();
1017 int enabled_ovls = get_num_used_overlays();
1019 if (!dss_has_feature(FEAT_FIFO_MERGE))
1023 * In theory the only requirement for fifomerge is enabled_ovls <= 1.
1024 * However, if we have two managers enabled and set/unset the fifomerge,
1025 * we need to set the GO bits in particular sequence for the managers,
1026 * and wait in between.
1028 * This is rather difficult as new apply calls can happen at any time,
1029 * so we simplify the problem by requiring also that enabled_mgrs <= 1.
1030 * In practice this shouldn't matter, because when only one overlay is
1031 * enabled, most likely only one output is enabled.
1034 return enabled_mgrs <= 1 && enabled_ovls <= 1;
1037 int dss_mgr_enable(struct omap_overlay_manager *mgr)
1039 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1040 unsigned long flags;
1044 mutex_lock(&apply_lock);
1049 spin_lock_irqsave(&data_lock, flags);
1053 r = dss_check_settings(mgr, mgr->device);
1055 DSSERR("failed to enable manager %d: check_settings failed\n",
1060 /* step 1: setup fifos/fifomerge before enabling the manager */
1062 fifo_merge = get_use_fifo_merge();
1063 dss_setup_fifos(fifo_merge);
1064 dss_apply_fifo_merge(fifo_merge);
1069 spin_unlock_irqrestore(&data_lock, flags);
1071 /* wait until fifo config is in */
1072 wait_pending_extra_info_updates();
1074 /* step 2: enable the manager */
1075 spin_lock_irqsave(&data_lock, flags);
1077 if (!mgr_manual_update(mgr))
1078 mp->updating = true;
1080 spin_unlock_irqrestore(&data_lock, flags);
1082 if (!mgr_manual_update(mgr))
1083 dispc_mgr_enable(mgr->id, true);
1086 mutex_unlock(&apply_lock);
1091 mp->enabled = false;
1092 spin_unlock_irqrestore(&data_lock, flags);
1093 mutex_unlock(&apply_lock);
1097 void dss_mgr_disable(struct omap_overlay_manager *mgr)
1099 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1100 unsigned long flags;
1103 mutex_lock(&apply_lock);
1108 if (!mgr_manual_update(mgr))
1109 dispc_mgr_enable(mgr->id, false);
1111 spin_lock_irqsave(&data_lock, flags);
1113 mp->updating = false;
1114 mp->enabled = false;
1116 fifo_merge = get_use_fifo_merge();
1117 dss_setup_fifos(fifo_merge);
1118 dss_apply_fifo_merge(fifo_merge);
1123 spin_unlock_irqrestore(&data_lock, flags);
1125 wait_pending_extra_info_updates();
1127 mutex_unlock(&apply_lock);
1130 int dss_mgr_set_info(struct omap_overlay_manager *mgr,
1131 struct omap_overlay_manager_info *info)
1133 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1134 unsigned long flags;
1137 r = dss_mgr_simple_check(mgr, info);
1141 spin_lock_irqsave(&data_lock, flags);
1143 mp->user_info = *info;
1144 mp->user_info_dirty = true;
1146 spin_unlock_irqrestore(&data_lock, flags);
1151 void dss_mgr_get_info(struct omap_overlay_manager *mgr,
1152 struct omap_overlay_manager_info *info)
1154 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1155 unsigned long flags;
1157 spin_lock_irqsave(&data_lock, flags);
1159 *info = mp->user_info;
1161 spin_unlock_irqrestore(&data_lock, flags);
1164 int dss_mgr_set_device(struct omap_overlay_manager *mgr,
1165 struct omap_dss_device *dssdev)
1169 mutex_lock(&apply_lock);
1171 if (dssdev->manager) {
1172 DSSERR("display '%s' already has a manager '%s'\n",
1173 dssdev->name, dssdev->manager->name);
1178 if ((mgr->supported_displays & dssdev->type) == 0) {
1179 DSSERR("display '%s' does not support manager '%s'\n",
1180 dssdev->name, mgr->name);
1185 dssdev->manager = mgr;
1186 mgr->device = dssdev;
1188 mutex_unlock(&apply_lock);
1192 mutex_unlock(&apply_lock);
1196 int dss_mgr_unset_device(struct omap_overlay_manager *mgr)
1200 mutex_lock(&apply_lock);
1203 DSSERR("failed to unset display, display not set.\n");
1209 * Don't allow currently enabled displays to have the overlay manager
1210 * pulled out from underneath them
1212 if (mgr->device->state != OMAP_DSS_DISPLAY_DISABLED) {
1217 mgr->device->manager = NULL;
1220 mutex_unlock(&apply_lock);
1224 mutex_unlock(&apply_lock);
1229 int dss_ovl_set_info(struct omap_overlay *ovl,
1230 struct omap_overlay_info *info)
1232 struct ovl_priv_data *op = get_ovl_priv(ovl);
1233 unsigned long flags;
1236 r = dss_ovl_simple_check(ovl, info);
1240 spin_lock_irqsave(&data_lock, flags);
1242 op->user_info = *info;
1243 op->user_info_dirty = true;
1245 spin_unlock_irqrestore(&data_lock, flags);
1250 void dss_ovl_get_info(struct omap_overlay *ovl,
1251 struct omap_overlay_info *info)
1253 struct ovl_priv_data *op = get_ovl_priv(ovl);
1254 unsigned long flags;
1256 spin_lock_irqsave(&data_lock, flags);
1258 *info = op->user_info;
1260 spin_unlock_irqrestore(&data_lock, flags);
1263 int dss_ovl_set_manager(struct omap_overlay *ovl,
1264 struct omap_overlay_manager *mgr)
1266 struct ovl_priv_data *op = get_ovl_priv(ovl);
1267 unsigned long flags;
1273 mutex_lock(&apply_lock);
1276 DSSERR("overlay '%s' already has a manager '%s'\n",
1277 ovl->name, ovl->manager->name);
1282 spin_lock_irqsave(&data_lock, flags);
1285 spin_unlock_irqrestore(&data_lock, flags);
1286 DSSERR("overlay has to be disabled to change the manager\n");
1291 op->channel = mgr->id;
1292 op->extra_info_dirty = true;
1295 list_add_tail(&ovl->list, &mgr->overlays);
1297 spin_unlock_irqrestore(&data_lock, flags);
1299 /* XXX: When there is an overlay on a DSI manual update display, and
1300 * the overlay is first disabled, then moved to tv, and enabled, we
1301 * seem to get SYNC_LOST_DIGIT error.
1303 * Waiting doesn't seem to help, but updating the manual update display
1304 * after disabling the overlay seems to fix this. This hints that the
1305 * overlay is perhaps somehow tied to the LCD output until the output
1308 * Userspace workaround for this is to update the LCD after disabling
1309 * the overlay, but before moving the overlay to TV.
1312 mutex_unlock(&apply_lock);
1316 mutex_unlock(&apply_lock);
1320 int dss_ovl_unset_manager(struct omap_overlay *ovl)
1322 struct ovl_priv_data *op = get_ovl_priv(ovl);
1323 unsigned long flags;
1326 mutex_lock(&apply_lock);
1328 if (!ovl->manager) {
1329 DSSERR("failed to detach overlay: manager not set\n");
1334 spin_lock_irqsave(&data_lock, flags);
1337 spin_unlock_irqrestore(&data_lock, flags);
1338 DSSERR("overlay has to be disabled to unset the manager\n");
1345 ovl->manager = NULL;
1346 list_del(&ovl->list);
1348 spin_unlock_irqrestore(&data_lock, flags);
1350 mutex_unlock(&apply_lock);
1354 mutex_unlock(&apply_lock);
1358 bool dss_ovl_is_enabled(struct omap_overlay *ovl)
1360 struct ovl_priv_data *op = get_ovl_priv(ovl);
1361 unsigned long flags;
1364 spin_lock_irqsave(&data_lock, flags);
1368 spin_unlock_irqrestore(&data_lock, flags);
1373 int dss_ovl_enable(struct omap_overlay *ovl)
1375 struct ovl_priv_data *op = get_ovl_priv(ovl);
1376 unsigned long flags;
1380 mutex_lock(&apply_lock);
1387 if (ovl->manager == NULL || ovl->manager->device == NULL) {
1392 spin_lock_irqsave(&data_lock, flags);
1394 op->enabling = true;
1396 r = dss_check_settings(ovl->manager, ovl->manager->device);
1398 DSSERR("failed to enable overlay %d: check_settings failed\n",
1403 /* step 1: configure fifos/fifomerge for currently enabled ovls */
1405 fifo_merge = get_use_fifo_merge();
1406 dss_setup_fifos(fifo_merge);
1407 dss_apply_fifo_merge(fifo_merge);
1412 spin_unlock_irqrestore(&data_lock, flags);
1414 /* wait for fifo configs to go in */
1415 wait_pending_extra_info_updates();
1417 /* step 2: enable the overlay */
1418 spin_lock_irqsave(&data_lock, flags);
1420 op->enabling = false;
1421 dss_apply_ovl_enable(ovl, true);
1426 spin_unlock_irqrestore(&data_lock, flags);
1428 /* wait for overlay to be enabled */
1429 wait_pending_extra_info_updates();
1431 mutex_unlock(&apply_lock);
1435 op->enabling = false;
1436 spin_unlock_irqrestore(&data_lock, flags);
1438 mutex_unlock(&apply_lock);
1442 int dss_ovl_disable(struct omap_overlay *ovl)
1444 struct ovl_priv_data *op = get_ovl_priv(ovl);
1445 unsigned long flags;
1449 mutex_lock(&apply_lock);
1456 if (ovl->manager == NULL || ovl->manager->device == NULL) {
1461 /* step 1: disable the overlay */
1462 spin_lock_irqsave(&data_lock, flags);
1464 dss_apply_ovl_enable(ovl, false);
1469 spin_unlock_irqrestore(&data_lock, flags);
1471 /* wait for the overlay to be disabled */
1472 wait_pending_extra_info_updates();
1474 /* step 2: configure fifos/fifomerge */
1475 spin_lock_irqsave(&data_lock, flags);
1477 fifo_merge = get_use_fifo_merge();
1478 dss_setup_fifos(fifo_merge);
1479 dss_apply_fifo_merge(fifo_merge);
1484 spin_unlock_irqrestore(&data_lock, flags);
1486 /* wait for fifo config to go in */
1487 wait_pending_extra_info_updates();
1489 mutex_unlock(&apply_lock);
1494 mutex_unlock(&apply_lock);