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 */
103 bool extra_info_dirty;
104 bool shadow_extra_info_dirty;
106 struct omap_video_timings timings;
107 struct dss_lcd_mgr_config lcd_config;
111 struct ovl_priv_data ovl_priv_data_array[MAX_DSS_OVERLAYS];
112 struct mgr_priv_data mgr_priv_data_array[MAX_DSS_MANAGERS];
117 /* protects dss_data */
118 static spinlock_t data_lock;
119 /* lock for blocking functions */
120 static DEFINE_MUTEX(apply_lock);
121 static DECLARE_COMPLETION(extra_updated_completion);
123 static void dss_register_vsync_isr(void);
125 static struct ovl_priv_data *get_ovl_priv(struct omap_overlay *ovl)
127 return &dss_data.ovl_priv_data_array[ovl->id];
130 static struct mgr_priv_data *get_mgr_priv(struct omap_overlay_manager *mgr)
132 return &dss_data.mgr_priv_data_array[mgr->id];
135 void dss_apply_init(void)
137 const int num_ovls = dss_feat_get_num_ovls();
138 struct mgr_priv_data *mp;
141 spin_lock_init(&data_lock);
143 for (i = 0; i < num_ovls; ++i) {
144 struct ovl_priv_data *op;
146 op = &dss_data.ovl_priv_data_array[i];
148 op->info.global_alpha = 255;
156 dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 3 : 0;
160 dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 2 : 0;
164 dss_has_feature(FEAT_ALPHA_FREE_ZORDER) ? 1 : 0;
168 op->user_info = op->info;
172 * Initialize some of the lcd_config fields for TV manager, this lets
173 * us prevent checking if the manager is LCD or TV at some places
175 mp = &dss_data.mgr_priv_data_array[OMAP_DSS_CHANNEL_DIGIT];
177 mp->lcd_config.video_port_width = 24;
178 mp->lcd_config.clock_info.lck_div = 1;
179 mp->lcd_config.clock_info.pck_div = 1;
183 * A LCD manager's stallmode decides whether it is in manual or auto update. TV
184 * manager is always auto update, stallmode field for TV manager is false by
187 static bool ovl_manual_update(struct omap_overlay *ovl)
189 struct mgr_priv_data *mp = get_mgr_priv(ovl->manager);
191 return mp->lcd_config.stallmode;
194 static bool mgr_manual_update(struct omap_overlay_manager *mgr)
196 struct mgr_priv_data *mp = get_mgr_priv(mgr);
198 return mp->lcd_config.stallmode;
201 static int dss_check_settings_low(struct omap_overlay_manager *mgr,
204 struct omap_overlay_info *oi;
205 struct omap_overlay_manager_info *mi;
206 struct omap_overlay *ovl;
207 struct omap_overlay_info *ois[MAX_DSS_OVERLAYS];
208 struct ovl_priv_data *op;
209 struct mgr_priv_data *mp;
211 mp = get_mgr_priv(mgr);
216 if (applying && mp->user_info_dirty)
221 /* collect the infos to be tested into the array */
222 list_for_each_entry(ovl, &mgr->overlays, list) {
223 op = get_ovl_priv(ovl);
225 if (!op->enabled && !op->enabling)
227 else if (applying && op->user_info_dirty)
235 return dss_mgr_check(mgr, mi, &mp->timings, &mp->lcd_config, ois);
239 * check manager and overlay settings using overlay_info from data->info
241 static int dss_check_settings(struct omap_overlay_manager *mgr)
243 return dss_check_settings_low(mgr, false);
247 * check manager and overlay settings using overlay_info from ovl->info if
248 * dirty and from data->info otherwise
250 static int dss_check_settings_apply(struct omap_overlay_manager *mgr)
252 return dss_check_settings_low(mgr, true);
255 static bool need_isr(void)
257 const int num_mgrs = dss_feat_get_num_mgrs();
260 for (i = 0; i < num_mgrs; ++i) {
261 struct omap_overlay_manager *mgr;
262 struct mgr_priv_data *mp;
263 struct omap_overlay *ovl;
265 mgr = omap_dss_get_overlay_manager(i);
266 mp = get_mgr_priv(mgr);
271 if (mgr_manual_update(mgr)) {
272 /* to catch FRAMEDONE */
276 /* to catch GO bit going down */
280 /* to write new values to registers */
285 if (mp->shadow_info_dirty)
289 * NOTE: we don't check extra_info flags for disabled
290 * managers, once the manager is enabled, the extra_info
291 * related manager changes will be taken in by HW.
294 /* to write new values to registers */
295 if (mp->extra_info_dirty)
299 if (mp->shadow_extra_info_dirty)
302 list_for_each_entry(ovl, &mgr->overlays, list) {
303 struct ovl_priv_data *op;
305 op = get_ovl_priv(ovl);
308 * NOTE: we check extra_info flags even for
309 * disabled overlays, as extra_infos need to be
313 /* to write new values to registers */
314 if (op->extra_info_dirty)
318 if (op->shadow_extra_info_dirty)
324 /* to write new values to registers */
329 if (op->shadow_info_dirty)
338 static bool need_go(struct omap_overlay_manager *mgr)
340 struct omap_overlay *ovl;
341 struct mgr_priv_data *mp;
342 struct ovl_priv_data *op;
344 mp = get_mgr_priv(mgr);
346 if (mp->shadow_info_dirty || mp->shadow_extra_info_dirty)
349 list_for_each_entry(ovl, &mgr->overlays, list) {
350 op = get_ovl_priv(ovl);
351 if (op->shadow_info_dirty || op->shadow_extra_info_dirty)
358 /* returns true if an extra_info field is currently being updated */
359 static bool extra_info_update_ongoing(void)
361 const int num_mgrs = dss_feat_get_num_mgrs();
364 for (i = 0; i < num_mgrs; ++i) {
365 struct omap_overlay_manager *mgr;
366 struct omap_overlay *ovl;
367 struct mgr_priv_data *mp;
369 mgr = omap_dss_get_overlay_manager(i);
370 mp = get_mgr_priv(mgr);
378 if (mp->extra_info_dirty || mp->shadow_extra_info_dirty)
381 list_for_each_entry(ovl, &mgr->overlays, list) {
382 struct ovl_priv_data *op = get_ovl_priv(ovl);
384 if (op->extra_info_dirty || op->shadow_extra_info_dirty)
392 /* wait until no extra_info updates are pending */
393 static void wait_pending_extra_info_updates(void)
400 spin_lock_irqsave(&data_lock, flags);
402 updating = extra_info_update_ongoing();
405 spin_unlock_irqrestore(&data_lock, flags);
409 init_completion(&extra_updated_completion);
411 spin_unlock_irqrestore(&data_lock, flags);
413 t = msecs_to_jiffies(500);
414 r = wait_for_completion_timeout(&extra_updated_completion, t);
416 DSSWARN("timeout in wait_pending_extra_info_updates\n");
418 DSSERR("wait_pending_extra_info_updates failed: %d\n", r);
421 int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
423 unsigned long timeout = msecs_to_jiffies(500);
424 struct mgr_priv_data *mp;
428 struct omap_dss_device *dssdev = mgr->device;
430 if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
433 if (mgr_manual_update(mgr))
436 r = dispc_runtime_get();
440 irq = dispc_mgr_get_vsync_irq(mgr->id);
442 mp = get_mgr_priv(mgr);
446 bool shadow_dirty, dirty;
448 spin_lock_irqsave(&data_lock, flags);
449 dirty = mp->info_dirty;
450 shadow_dirty = mp->shadow_info_dirty;
451 spin_unlock_irqrestore(&data_lock, flags);
453 if (!dirty && !shadow_dirty) {
458 /* 4 iterations is the worst case:
459 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
460 * 2 - first VSYNC, dirty = true
461 * 3 - dirty = false, shadow_dirty = true
462 * 4 - shadow_dirty = false */
464 DSSERR("mgr(%d)->wait_for_go() not finishing\n",
470 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
471 if (r == -ERESTARTSYS)
475 DSSERR("mgr(%d)->wait_for_go() timeout\n", mgr->id);
485 int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
487 unsigned long timeout = msecs_to_jiffies(500);
488 struct ovl_priv_data *op;
489 struct omap_dss_device *dssdev;
497 dssdev = ovl->manager->device;
499 if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
502 if (ovl_manual_update(ovl))
505 r = dispc_runtime_get();
509 irq = dispc_mgr_get_vsync_irq(ovl->manager->id);
511 op = get_ovl_priv(ovl);
515 bool shadow_dirty, dirty;
517 spin_lock_irqsave(&data_lock, flags);
518 dirty = op->info_dirty;
519 shadow_dirty = op->shadow_info_dirty;
520 spin_unlock_irqrestore(&data_lock, flags);
522 if (!dirty && !shadow_dirty) {
527 /* 4 iterations is the worst case:
528 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
529 * 2 - first VSYNC, dirty = true
530 * 3 - dirty = false, shadow_dirty = true
531 * 4 - shadow_dirty = false */
533 DSSERR("ovl(%d)->wait_for_go() not finishing\n",
539 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
540 if (r == -ERESTARTSYS)
544 DSSERR("ovl(%d)->wait_for_go() timeout\n", ovl->id);
554 static void dss_ovl_write_regs(struct omap_overlay *ovl)
556 struct ovl_priv_data *op = get_ovl_priv(ovl);
557 struct omap_overlay_info *oi;
559 struct mgr_priv_data *mp;
562 DSSDBGF("%d", ovl->id);
564 if (!op->enabled || !op->info_dirty)
569 mp = get_mgr_priv(ovl->manager);
571 replication = dss_ovl_use_replication(mp->lcd_config, oi->color_mode);
573 r = dispc_ovl_setup(ovl->id, oi, replication, &mp->timings);
576 * We can't do much here, as this function can be called from
579 DSSERR("dispc_ovl_setup failed for ovl %d\n", ovl->id);
581 /* This will leave fifo configurations in a nonoptimal state */
583 dispc_ovl_enable(ovl->id, false);
587 op->info_dirty = false;
589 op->shadow_info_dirty = true;
592 static void dss_ovl_write_regs_extra(struct omap_overlay *ovl)
594 struct ovl_priv_data *op = get_ovl_priv(ovl);
595 struct mgr_priv_data *mp;
597 DSSDBGF("%d", ovl->id);
599 if (!op->extra_info_dirty)
602 /* note: write also when op->enabled == false, so that the ovl gets
605 dispc_ovl_enable(ovl->id, op->enabled);
606 dispc_ovl_set_channel_out(ovl->id, op->channel);
607 dispc_ovl_set_fifo_threshold(ovl->id, op->fifo_low, op->fifo_high);
609 mp = get_mgr_priv(ovl->manager);
611 op->extra_info_dirty = false;
613 op->shadow_extra_info_dirty = true;
616 static void dss_mgr_write_regs(struct omap_overlay_manager *mgr)
618 struct mgr_priv_data *mp = get_mgr_priv(mgr);
619 struct omap_overlay *ovl;
621 DSSDBGF("%d", mgr->id);
628 /* Commit overlay settings */
629 list_for_each_entry(ovl, &mgr->overlays, list) {
630 dss_ovl_write_regs(ovl);
631 dss_ovl_write_regs_extra(ovl);
634 if (mp->info_dirty) {
635 dispc_mgr_setup(mgr->id, &mp->info);
637 mp->info_dirty = false;
639 mp->shadow_info_dirty = true;
643 static void dss_mgr_write_regs_extra(struct omap_overlay_manager *mgr)
645 struct mgr_priv_data *mp = get_mgr_priv(mgr);
647 DSSDBGF("%d", mgr->id);
649 if (!mp->extra_info_dirty)
652 dispc_mgr_set_timings(mgr->id, &mp->timings);
654 /* lcd_config parameters */
655 if (dss_mgr_is_lcd(mgr->id)) {
656 dispc_mgr_set_io_pad_mode(mp->lcd_config.io_pad_mode);
658 dispc_mgr_enable_stallmode(mgr->id, mp->lcd_config.stallmode);
659 dispc_mgr_enable_fifohandcheck(mgr->id,
660 mp->lcd_config.fifohandcheck);
662 dispc_mgr_set_clock_div(mgr->id, &mp->lcd_config.clock_info);
664 dispc_mgr_set_tft_data_lines(mgr->id,
665 mp->lcd_config.video_port_width);
667 dispc_lcd_enable_signal_polarity(mp->lcd_config.lcden_sig_polarity);
669 dispc_mgr_set_lcd_type_tft(mgr->id);
672 mp->extra_info_dirty = false;
674 mp->shadow_extra_info_dirty = true;
677 static void dss_write_regs(void)
679 const int num_mgrs = omap_dss_get_num_overlay_managers();
682 for (i = 0; i < num_mgrs; ++i) {
683 struct omap_overlay_manager *mgr;
684 struct mgr_priv_data *mp;
687 mgr = omap_dss_get_overlay_manager(i);
688 mp = get_mgr_priv(mgr);
690 if (!mp->enabled || mgr_manual_update(mgr) || mp->busy)
693 r = dss_check_settings(mgr);
695 DSSERR("cannot write registers for manager %s: "
696 "illegal configuration\n", mgr->name);
700 dss_mgr_write_regs(mgr);
701 dss_mgr_write_regs_extra(mgr);
705 static void dss_set_go_bits(void)
707 const int num_mgrs = omap_dss_get_num_overlay_managers();
710 for (i = 0; i < num_mgrs; ++i) {
711 struct omap_overlay_manager *mgr;
712 struct mgr_priv_data *mp;
714 mgr = omap_dss_get_overlay_manager(i);
715 mp = get_mgr_priv(mgr);
717 if (!mp->enabled || mgr_manual_update(mgr) || mp->busy)
725 if (!dss_data.irq_enabled && need_isr())
726 dss_register_vsync_isr();
728 dispc_mgr_go(mgr->id);
733 static void mgr_clear_shadow_dirty(struct omap_overlay_manager *mgr)
735 struct omap_overlay *ovl;
736 struct mgr_priv_data *mp;
737 struct ovl_priv_data *op;
739 mp = get_mgr_priv(mgr);
740 mp->shadow_info_dirty = false;
741 mp->shadow_extra_info_dirty = false;
743 list_for_each_entry(ovl, &mgr->overlays, list) {
744 op = get_ovl_priv(ovl);
745 op->shadow_info_dirty = false;
746 op->shadow_extra_info_dirty = false;
750 void dss_mgr_start_update(struct omap_overlay_manager *mgr)
752 struct mgr_priv_data *mp = get_mgr_priv(mgr);
756 spin_lock_irqsave(&data_lock, flags);
758 WARN_ON(mp->updating);
760 r = dss_check_settings(mgr);
762 DSSERR("cannot start manual update: illegal configuration\n");
763 spin_unlock_irqrestore(&data_lock, flags);
767 dss_mgr_write_regs(mgr);
768 dss_mgr_write_regs_extra(mgr);
772 if (!dss_data.irq_enabled && need_isr())
773 dss_register_vsync_isr();
775 dispc_mgr_enable(mgr->id, true);
777 mgr_clear_shadow_dirty(mgr);
779 spin_unlock_irqrestore(&data_lock, flags);
782 static void dss_apply_irq_handler(void *data, u32 mask);
784 static void dss_register_vsync_isr(void)
786 const int num_mgrs = dss_feat_get_num_mgrs();
791 for (i = 0; i < num_mgrs; ++i)
792 mask |= dispc_mgr_get_vsync_irq(i);
794 for (i = 0; i < num_mgrs; ++i)
795 mask |= dispc_mgr_get_framedone_irq(i);
797 r = omap_dispc_register_isr(dss_apply_irq_handler, NULL, mask);
800 dss_data.irq_enabled = true;
803 static void dss_unregister_vsync_isr(void)
805 const int num_mgrs = dss_feat_get_num_mgrs();
810 for (i = 0; i < num_mgrs; ++i)
811 mask |= dispc_mgr_get_vsync_irq(i);
813 for (i = 0; i < num_mgrs; ++i)
814 mask |= dispc_mgr_get_framedone_irq(i);
816 r = omap_dispc_unregister_isr(dss_apply_irq_handler, NULL, mask);
819 dss_data.irq_enabled = false;
822 static void dss_apply_irq_handler(void *data, u32 mask)
824 const int num_mgrs = dss_feat_get_num_mgrs();
828 spin_lock(&data_lock);
830 /* clear busy, updating flags, shadow_dirty flags */
831 for (i = 0; i < num_mgrs; i++) {
832 struct omap_overlay_manager *mgr;
833 struct mgr_priv_data *mp;
836 mgr = omap_dss_get_overlay_manager(i);
837 mp = get_mgr_priv(mgr);
842 was_updating = mp->updating;
843 mp->updating = dispc_mgr_is_enabled(i);
845 if (!mgr_manual_update(mgr)) {
846 bool was_busy = mp->busy;
847 mp->busy = dispc_mgr_go_busy(i);
849 if (was_busy && !mp->busy)
850 mgr_clear_shadow_dirty(mgr);
857 extra_updating = extra_info_update_ongoing();
859 complete_all(&extra_updated_completion);
862 dss_unregister_vsync_isr();
864 spin_unlock(&data_lock);
867 static void omap_dss_mgr_apply_ovl(struct omap_overlay *ovl)
869 struct ovl_priv_data *op;
871 op = get_ovl_priv(ovl);
873 if (!op->user_info_dirty)
876 op->user_info_dirty = false;
877 op->info_dirty = true;
878 op->info = op->user_info;
881 static void omap_dss_mgr_apply_mgr(struct omap_overlay_manager *mgr)
883 struct mgr_priv_data *mp;
885 mp = get_mgr_priv(mgr);
887 if (!mp->user_info_dirty)
890 mp->user_info_dirty = false;
891 mp->info_dirty = true;
892 mp->info = mp->user_info;
895 int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
898 struct omap_overlay *ovl;
901 DSSDBG("omap_dss_mgr_apply(%s)\n", mgr->name);
903 spin_lock_irqsave(&data_lock, flags);
905 r = dss_check_settings_apply(mgr);
907 spin_unlock_irqrestore(&data_lock, flags);
908 DSSERR("failed to apply settings: illegal configuration.\n");
912 /* Configure overlays */
913 list_for_each_entry(ovl, &mgr->overlays, list)
914 omap_dss_mgr_apply_ovl(ovl);
916 /* Configure manager */
917 omap_dss_mgr_apply_mgr(mgr);
922 spin_unlock_irqrestore(&data_lock, flags);
927 static void dss_apply_ovl_enable(struct omap_overlay *ovl, bool enable)
929 struct ovl_priv_data *op;
931 op = get_ovl_priv(ovl);
933 if (op->enabled == enable)
936 op->enabled = enable;
937 op->extra_info_dirty = true;
940 static void dss_apply_ovl_fifo_thresholds(struct omap_overlay *ovl,
941 u32 fifo_low, u32 fifo_high)
943 struct ovl_priv_data *op = get_ovl_priv(ovl);
945 if (op->fifo_low == fifo_low && op->fifo_high == fifo_high)
948 op->fifo_low = fifo_low;
949 op->fifo_high = fifo_high;
950 op->extra_info_dirty = true;
953 static void dss_ovl_setup_fifo(struct omap_overlay *ovl)
955 struct ovl_priv_data *op = get_ovl_priv(ovl);
956 u32 fifo_low, fifo_high;
957 bool use_fifo_merge = false;
959 if (!op->enabled && !op->enabling)
962 dispc_ovl_compute_fifo_thresholds(ovl->id, &fifo_low, &fifo_high,
963 use_fifo_merge, ovl_manual_update(ovl));
965 dss_apply_ovl_fifo_thresholds(ovl, fifo_low, fifo_high);
968 static void dss_mgr_setup_fifos(struct omap_overlay_manager *mgr)
970 struct omap_overlay *ovl;
971 struct mgr_priv_data *mp;
973 mp = get_mgr_priv(mgr);
978 list_for_each_entry(ovl, &mgr->overlays, list)
979 dss_ovl_setup_fifo(ovl);
982 static void dss_setup_fifos(void)
984 const int num_mgrs = omap_dss_get_num_overlay_managers();
985 struct omap_overlay_manager *mgr;
988 for (i = 0; i < num_mgrs; ++i) {
989 mgr = omap_dss_get_overlay_manager(i);
990 dss_mgr_setup_fifos(mgr);
994 int dss_mgr_enable(struct omap_overlay_manager *mgr)
996 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1000 mutex_lock(&apply_lock);
1005 spin_lock_irqsave(&data_lock, flags);
1009 r = dss_check_settings(mgr);
1011 DSSERR("failed to enable manager %d: check_settings failed\n",
1021 if (!mgr_manual_update(mgr))
1022 mp->updating = true;
1024 spin_unlock_irqrestore(&data_lock, flags);
1026 if (!mgr_manual_update(mgr))
1027 dispc_mgr_enable(mgr->id, true);
1030 mutex_unlock(&apply_lock);
1035 mp->enabled = false;
1036 spin_unlock_irqrestore(&data_lock, flags);
1037 mutex_unlock(&apply_lock);
1041 void dss_mgr_disable(struct omap_overlay_manager *mgr)
1043 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1044 unsigned long flags;
1046 mutex_lock(&apply_lock);
1051 if (!mgr_manual_update(mgr))
1052 dispc_mgr_enable(mgr->id, false);
1054 spin_lock_irqsave(&data_lock, flags);
1056 mp->updating = false;
1057 mp->enabled = false;
1059 spin_unlock_irqrestore(&data_lock, flags);
1062 mutex_unlock(&apply_lock);
1065 int dss_mgr_set_info(struct omap_overlay_manager *mgr,
1066 struct omap_overlay_manager_info *info)
1068 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1069 unsigned long flags;
1072 r = dss_mgr_simple_check(mgr, info);
1076 spin_lock_irqsave(&data_lock, flags);
1078 mp->user_info = *info;
1079 mp->user_info_dirty = true;
1081 spin_unlock_irqrestore(&data_lock, flags);
1086 void dss_mgr_get_info(struct omap_overlay_manager *mgr,
1087 struct omap_overlay_manager_info *info)
1089 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1090 unsigned long flags;
1092 spin_lock_irqsave(&data_lock, flags);
1094 *info = mp->user_info;
1096 spin_unlock_irqrestore(&data_lock, flags);
1099 int dss_mgr_set_device(struct omap_overlay_manager *mgr,
1100 struct omap_dss_device *dssdev)
1104 mutex_lock(&apply_lock);
1106 if (dssdev->manager) {
1107 DSSERR("display '%s' already has a manager '%s'\n",
1108 dssdev->name, dssdev->manager->name);
1113 if ((mgr->supported_displays & dssdev->type) == 0) {
1114 DSSERR("display '%s' does not support manager '%s'\n",
1115 dssdev->name, mgr->name);
1120 dssdev->manager = mgr;
1121 mgr->device = dssdev;
1123 mutex_unlock(&apply_lock);
1127 mutex_unlock(&apply_lock);
1131 int dss_mgr_unset_device(struct omap_overlay_manager *mgr)
1135 mutex_lock(&apply_lock);
1138 DSSERR("failed to unset display, display not set.\n");
1144 * Don't allow currently enabled displays to have the overlay manager
1145 * pulled out from underneath them
1147 if (mgr->device->state != OMAP_DSS_DISPLAY_DISABLED) {
1152 mgr->device->manager = NULL;
1155 mutex_unlock(&apply_lock);
1159 mutex_unlock(&apply_lock);
1163 static void dss_apply_mgr_timings(struct omap_overlay_manager *mgr,
1164 const struct omap_video_timings *timings)
1166 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1168 mp->timings = *timings;
1169 mp->extra_info_dirty = true;
1172 void dss_mgr_set_timings(struct omap_overlay_manager *mgr,
1173 const struct omap_video_timings *timings)
1175 unsigned long flags;
1176 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1178 spin_lock_irqsave(&data_lock, flags);
1181 DSSERR("cannot set timings for %s: manager needs to be disabled\n",
1186 dss_apply_mgr_timings(mgr, timings);
1188 spin_unlock_irqrestore(&data_lock, flags);
1191 static void dss_apply_mgr_lcd_config(struct omap_overlay_manager *mgr,
1192 const struct dss_lcd_mgr_config *config)
1194 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1196 mp->lcd_config = *config;
1197 mp->extra_info_dirty = true;
1200 void dss_mgr_set_lcd_config(struct omap_overlay_manager *mgr,
1201 const struct dss_lcd_mgr_config *config)
1203 unsigned long flags;
1204 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1206 spin_lock_irqsave(&data_lock, flags);
1209 DSSERR("cannot apply lcd config for %s: manager needs to be disabled\n",
1214 dss_apply_mgr_lcd_config(mgr, config);
1216 spin_unlock_irqrestore(&data_lock, flags);
1219 int dss_ovl_set_info(struct omap_overlay *ovl,
1220 struct omap_overlay_info *info)
1222 struct ovl_priv_data *op = get_ovl_priv(ovl);
1223 unsigned long flags;
1226 r = dss_ovl_simple_check(ovl, info);
1230 spin_lock_irqsave(&data_lock, flags);
1232 op->user_info = *info;
1233 op->user_info_dirty = true;
1235 spin_unlock_irqrestore(&data_lock, flags);
1240 void dss_ovl_get_info(struct omap_overlay *ovl,
1241 struct omap_overlay_info *info)
1243 struct ovl_priv_data *op = get_ovl_priv(ovl);
1244 unsigned long flags;
1246 spin_lock_irqsave(&data_lock, flags);
1248 *info = op->user_info;
1250 spin_unlock_irqrestore(&data_lock, flags);
1253 int dss_ovl_set_manager(struct omap_overlay *ovl,
1254 struct omap_overlay_manager *mgr)
1256 struct ovl_priv_data *op = get_ovl_priv(ovl);
1257 unsigned long flags;
1263 mutex_lock(&apply_lock);
1266 DSSERR("overlay '%s' already has a manager '%s'\n",
1267 ovl->name, ovl->manager->name);
1272 spin_lock_irqsave(&data_lock, flags);
1275 spin_unlock_irqrestore(&data_lock, flags);
1276 DSSERR("overlay has to be disabled to change the manager\n");
1281 op->channel = mgr->id;
1282 op->extra_info_dirty = true;
1285 list_add_tail(&ovl->list, &mgr->overlays);
1287 spin_unlock_irqrestore(&data_lock, flags);
1289 /* XXX: When there is an overlay on a DSI manual update display, and
1290 * the overlay is first disabled, then moved to tv, and enabled, we
1291 * seem to get SYNC_LOST_DIGIT error.
1293 * Waiting doesn't seem to help, but updating the manual update display
1294 * after disabling the overlay seems to fix this. This hints that the
1295 * overlay is perhaps somehow tied to the LCD output until the output
1298 * Userspace workaround for this is to update the LCD after disabling
1299 * the overlay, but before moving the overlay to TV.
1302 mutex_unlock(&apply_lock);
1306 mutex_unlock(&apply_lock);
1310 int dss_ovl_unset_manager(struct omap_overlay *ovl)
1312 struct ovl_priv_data *op = get_ovl_priv(ovl);
1313 unsigned long flags;
1316 mutex_lock(&apply_lock);
1318 if (!ovl->manager) {
1319 DSSERR("failed to detach overlay: manager not set\n");
1324 spin_lock_irqsave(&data_lock, flags);
1327 spin_unlock_irqrestore(&data_lock, flags);
1328 DSSERR("overlay has to be disabled to unset the manager\n");
1333 spin_unlock_irqrestore(&data_lock, flags);
1335 /* wait for pending extra_info updates to ensure the ovl is disabled */
1336 wait_pending_extra_info_updates();
1338 spin_lock_irqsave(&data_lock, flags);
1342 ovl->manager = NULL;
1343 list_del(&ovl->list);
1345 spin_unlock_irqrestore(&data_lock, flags);
1347 mutex_unlock(&apply_lock);
1351 mutex_unlock(&apply_lock);
1355 bool dss_ovl_is_enabled(struct omap_overlay *ovl)
1357 struct ovl_priv_data *op = get_ovl_priv(ovl);
1358 unsigned long flags;
1361 spin_lock_irqsave(&data_lock, flags);
1365 spin_unlock_irqrestore(&data_lock, flags);
1370 int dss_ovl_enable(struct omap_overlay *ovl)
1372 struct ovl_priv_data *op = get_ovl_priv(ovl);
1373 unsigned long flags;
1376 mutex_lock(&apply_lock);
1383 if (ovl->manager == NULL || ovl->manager->device == NULL) {
1388 spin_lock_irqsave(&data_lock, flags);
1390 op->enabling = true;
1392 r = dss_check_settings(ovl->manager);
1394 DSSERR("failed to enable overlay %d: check_settings failed\n",
1401 op->enabling = false;
1402 dss_apply_ovl_enable(ovl, true);
1407 spin_unlock_irqrestore(&data_lock, flags);
1409 mutex_unlock(&apply_lock);
1413 op->enabling = false;
1414 spin_unlock_irqrestore(&data_lock, flags);
1416 mutex_unlock(&apply_lock);
1420 int dss_ovl_disable(struct omap_overlay *ovl)
1422 struct ovl_priv_data *op = get_ovl_priv(ovl);
1423 unsigned long flags;
1426 mutex_lock(&apply_lock);
1433 if (ovl->manager == NULL || ovl->manager->device == NULL) {
1438 spin_lock_irqsave(&data_lock, flags);
1440 dss_apply_ovl_enable(ovl, false);
1444 spin_unlock_irqrestore(&data_lock, flags);
1446 mutex_unlock(&apply_lock);
1451 mutex_unlock(&apply_lock);