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 = get_mgr_priv(mgr);
430 spin_lock_irqsave(&data_lock, flags);
432 if (mgr_manual_update(mgr)) {
433 spin_unlock_irqrestore(&data_lock, flags);
438 spin_unlock_irqrestore(&data_lock, flags);
442 spin_unlock_irqrestore(&data_lock, flags);
444 r = dispc_runtime_get();
448 irq = dispc_mgr_get_vsync_irq(mgr->id);
452 bool shadow_dirty, dirty;
454 spin_lock_irqsave(&data_lock, flags);
455 dirty = mp->info_dirty;
456 shadow_dirty = mp->shadow_info_dirty;
457 spin_unlock_irqrestore(&data_lock, flags);
459 if (!dirty && !shadow_dirty) {
464 /* 4 iterations is the worst case:
465 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
466 * 2 - first VSYNC, dirty = true
467 * 3 - dirty = false, shadow_dirty = true
468 * 4 - shadow_dirty = false */
470 DSSERR("mgr(%d)->wait_for_go() not finishing\n",
476 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
477 if (r == -ERESTARTSYS)
481 DSSERR("mgr(%d)->wait_for_go() timeout\n", mgr->id);
491 int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
493 unsigned long timeout = msecs_to_jiffies(500);
494 struct ovl_priv_data *op;
495 struct mgr_priv_data *mp;
504 mp = get_mgr_priv(ovl->manager);
506 spin_lock_irqsave(&data_lock, flags);
508 if (ovl_manual_update(ovl)) {
509 spin_unlock_irqrestore(&data_lock, flags);
514 spin_unlock_irqrestore(&data_lock, flags);
518 spin_unlock_irqrestore(&data_lock, flags);
520 r = dispc_runtime_get();
524 irq = dispc_mgr_get_vsync_irq(ovl->manager->id);
526 op = get_ovl_priv(ovl);
529 bool shadow_dirty, dirty;
531 spin_lock_irqsave(&data_lock, flags);
532 dirty = op->info_dirty;
533 shadow_dirty = op->shadow_info_dirty;
534 spin_unlock_irqrestore(&data_lock, flags);
536 if (!dirty && !shadow_dirty) {
541 /* 4 iterations is the worst case:
542 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
543 * 2 - first VSYNC, dirty = true
544 * 3 - dirty = false, shadow_dirty = true
545 * 4 - shadow_dirty = false */
547 DSSERR("ovl(%d)->wait_for_go() not finishing\n",
553 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
554 if (r == -ERESTARTSYS)
558 DSSERR("ovl(%d)->wait_for_go() timeout\n", ovl->id);
568 static void dss_ovl_write_regs(struct omap_overlay *ovl)
570 struct ovl_priv_data *op = get_ovl_priv(ovl);
571 struct omap_overlay_info *oi;
573 struct mgr_priv_data *mp;
576 DSSDBGF("%d", ovl->id);
578 if (!op->enabled || !op->info_dirty)
583 mp = get_mgr_priv(ovl->manager);
585 replication = dss_ovl_use_replication(mp->lcd_config, oi->color_mode);
587 r = dispc_ovl_setup(ovl->id, oi, replication, &mp->timings);
590 * We can't do much here, as this function can be called from
593 DSSERR("dispc_ovl_setup failed for ovl %d\n", ovl->id);
595 /* This will leave fifo configurations in a nonoptimal state */
597 dispc_ovl_enable(ovl->id, false);
601 op->info_dirty = false;
603 op->shadow_info_dirty = true;
606 static void dss_ovl_write_regs_extra(struct omap_overlay *ovl)
608 struct ovl_priv_data *op = get_ovl_priv(ovl);
609 struct mgr_priv_data *mp;
611 DSSDBGF("%d", ovl->id);
613 if (!op->extra_info_dirty)
616 /* note: write also when op->enabled == false, so that the ovl gets
619 dispc_ovl_enable(ovl->id, op->enabled);
620 dispc_ovl_set_channel_out(ovl->id, op->channel);
621 dispc_ovl_set_fifo_threshold(ovl->id, op->fifo_low, op->fifo_high);
623 mp = get_mgr_priv(ovl->manager);
625 op->extra_info_dirty = false;
627 op->shadow_extra_info_dirty = true;
630 static void dss_mgr_write_regs(struct omap_overlay_manager *mgr)
632 struct mgr_priv_data *mp = get_mgr_priv(mgr);
633 struct omap_overlay *ovl;
635 DSSDBGF("%d", mgr->id);
642 /* Commit overlay settings */
643 list_for_each_entry(ovl, &mgr->overlays, list) {
644 dss_ovl_write_regs(ovl);
645 dss_ovl_write_regs_extra(ovl);
648 if (mp->info_dirty) {
649 dispc_mgr_setup(mgr->id, &mp->info);
651 mp->info_dirty = false;
653 mp->shadow_info_dirty = true;
657 static void dss_mgr_write_regs_extra(struct omap_overlay_manager *mgr)
659 struct mgr_priv_data *mp = get_mgr_priv(mgr);
661 DSSDBGF("%d", mgr->id);
663 if (!mp->extra_info_dirty)
666 dispc_mgr_set_timings(mgr->id, &mp->timings);
668 /* lcd_config parameters */
669 if (dss_mgr_is_lcd(mgr->id)) {
670 dispc_mgr_set_io_pad_mode(mp->lcd_config.io_pad_mode);
672 dispc_mgr_enable_stallmode(mgr->id, mp->lcd_config.stallmode);
673 dispc_mgr_enable_fifohandcheck(mgr->id,
674 mp->lcd_config.fifohandcheck);
676 dispc_mgr_set_clock_div(mgr->id, &mp->lcd_config.clock_info);
678 dispc_mgr_set_tft_data_lines(mgr->id,
679 mp->lcd_config.video_port_width);
681 dispc_lcd_enable_signal_polarity(mp->lcd_config.lcden_sig_polarity);
683 dispc_mgr_set_lcd_type_tft(mgr->id);
686 mp->extra_info_dirty = false;
688 mp->shadow_extra_info_dirty = true;
691 static void dss_write_regs(void)
693 const int num_mgrs = omap_dss_get_num_overlay_managers();
696 for (i = 0; i < num_mgrs; ++i) {
697 struct omap_overlay_manager *mgr;
698 struct mgr_priv_data *mp;
701 mgr = omap_dss_get_overlay_manager(i);
702 mp = get_mgr_priv(mgr);
704 if (!mp->enabled || mgr_manual_update(mgr) || mp->busy)
707 r = dss_check_settings(mgr);
709 DSSERR("cannot write registers for manager %s: "
710 "illegal configuration\n", mgr->name);
714 dss_mgr_write_regs(mgr);
715 dss_mgr_write_regs_extra(mgr);
719 static void dss_set_go_bits(void)
721 const int num_mgrs = omap_dss_get_num_overlay_managers();
724 for (i = 0; i < num_mgrs; ++i) {
725 struct omap_overlay_manager *mgr;
726 struct mgr_priv_data *mp;
728 mgr = omap_dss_get_overlay_manager(i);
729 mp = get_mgr_priv(mgr);
731 if (!mp->enabled || mgr_manual_update(mgr) || mp->busy)
739 if (!dss_data.irq_enabled && need_isr())
740 dss_register_vsync_isr();
742 dispc_mgr_go(mgr->id);
747 static void mgr_clear_shadow_dirty(struct omap_overlay_manager *mgr)
749 struct omap_overlay *ovl;
750 struct mgr_priv_data *mp;
751 struct ovl_priv_data *op;
753 mp = get_mgr_priv(mgr);
754 mp->shadow_info_dirty = false;
755 mp->shadow_extra_info_dirty = false;
757 list_for_each_entry(ovl, &mgr->overlays, list) {
758 op = get_ovl_priv(ovl);
759 op->shadow_info_dirty = false;
760 op->shadow_extra_info_dirty = false;
764 void dss_mgr_start_update(struct omap_overlay_manager *mgr)
766 struct mgr_priv_data *mp = get_mgr_priv(mgr);
770 spin_lock_irqsave(&data_lock, flags);
772 WARN_ON(mp->updating);
774 r = dss_check_settings(mgr);
776 DSSERR("cannot start manual update: illegal configuration\n");
777 spin_unlock_irqrestore(&data_lock, flags);
781 dss_mgr_write_regs(mgr);
782 dss_mgr_write_regs_extra(mgr);
786 if (!dss_data.irq_enabled && need_isr())
787 dss_register_vsync_isr();
789 dispc_mgr_enable(mgr->id, true);
791 mgr_clear_shadow_dirty(mgr);
793 spin_unlock_irqrestore(&data_lock, flags);
796 static void dss_apply_irq_handler(void *data, u32 mask);
798 static void dss_register_vsync_isr(void)
800 const int num_mgrs = dss_feat_get_num_mgrs();
805 for (i = 0; i < num_mgrs; ++i)
806 mask |= dispc_mgr_get_vsync_irq(i);
808 for (i = 0; i < num_mgrs; ++i)
809 mask |= dispc_mgr_get_framedone_irq(i);
811 r = omap_dispc_register_isr(dss_apply_irq_handler, NULL, mask);
814 dss_data.irq_enabled = true;
817 static void dss_unregister_vsync_isr(void)
819 const int num_mgrs = dss_feat_get_num_mgrs();
824 for (i = 0; i < num_mgrs; ++i)
825 mask |= dispc_mgr_get_vsync_irq(i);
827 for (i = 0; i < num_mgrs; ++i)
828 mask |= dispc_mgr_get_framedone_irq(i);
830 r = omap_dispc_unregister_isr(dss_apply_irq_handler, NULL, mask);
833 dss_data.irq_enabled = false;
836 static void dss_apply_irq_handler(void *data, u32 mask)
838 const int num_mgrs = dss_feat_get_num_mgrs();
842 spin_lock(&data_lock);
844 /* clear busy, updating flags, shadow_dirty flags */
845 for (i = 0; i < num_mgrs; i++) {
846 struct omap_overlay_manager *mgr;
847 struct mgr_priv_data *mp;
850 mgr = omap_dss_get_overlay_manager(i);
851 mp = get_mgr_priv(mgr);
856 was_updating = mp->updating;
857 mp->updating = dispc_mgr_is_enabled(i);
859 if (!mgr_manual_update(mgr)) {
860 bool was_busy = mp->busy;
861 mp->busy = dispc_mgr_go_busy(i);
863 if (was_busy && !mp->busy)
864 mgr_clear_shadow_dirty(mgr);
871 extra_updating = extra_info_update_ongoing();
873 complete_all(&extra_updated_completion);
876 dss_unregister_vsync_isr();
878 spin_unlock(&data_lock);
881 static void omap_dss_mgr_apply_ovl(struct omap_overlay *ovl)
883 struct ovl_priv_data *op;
885 op = get_ovl_priv(ovl);
887 if (!op->user_info_dirty)
890 op->user_info_dirty = false;
891 op->info_dirty = true;
892 op->info = op->user_info;
895 static void omap_dss_mgr_apply_mgr(struct omap_overlay_manager *mgr)
897 struct mgr_priv_data *mp;
899 mp = get_mgr_priv(mgr);
901 if (!mp->user_info_dirty)
904 mp->user_info_dirty = false;
905 mp->info_dirty = true;
906 mp->info = mp->user_info;
909 int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
912 struct omap_overlay *ovl;
915 DSSDBG("omap_dss_mgr_apply(%s)\n", mgr->name);
917 spin_lock_irqsave(&data_lock, flags);
919 r = dss_check_settings_apply(mgr);
921 spin_unlock_irqrestore(&data_lock, flags);
922 DSSERR("failed to apply settings: illegal configuration.\n");
926 /* Configure overlays */
927 list_for_each_entry(ovl, &mgr->overlays, list)
928 omap_dss_mgr_apply_ovl(ovl);
930 /* Configure manager */
931 omap_dss_mgr_apply_mgr(mgr);
936 spin_unlock_irqrestore(&data_lock, flags);
941 static void dss_apply_ovl_enable(struct omap_overlay *ovl, bool enable)
943 struct ovl_priv_data *op;
945 op = get_ovl_priv(ovl);
947 if (op->enabled == enable)
950 op->enabled = enable;
951 op->extra_info_dirty = true;
954 static void dss_apply_ovl_fifo_thresholds(struct omap_overlay *ovl,
955 u32 fifo_low, u32 fifo_high)
957 struct ovl_priv_data *op = get_ovl_priv(ovl);
959 if (op->fifo_low == fifo_low && op->fifo_high == fifo_high)
962 op->fifo_low = fifo_low;
963 op->fifo_high = fifo_high;
964 op->extra_info_dirty = true;
967 static void dss_ovl_setup_fifo(struct omap_overlay *ovl)
969 struct ovl_priv_data *op = get_ovl_priv(ovl);
970 u32 fifo_low, fifo_high;
971 bool use_fifo_merge = false;
973 if (!op->enabled && !op->enabling)
976 dispc_ovl_compute_fifo_thresholds(ovl->id, &fifo_low, &fifo_high,
977 use_fifo_merge, ovl_manual_update(ovl));
979 dss_apply_ovl_fifo_thresholds(ovl, fifo_low, fifo_high);
982 static void dss_mgr_setup_fifos(struct omap_overlay_manager *mgr)
984 struct omap_overlay *ovl;
985 struct mgr_priv_data *mp;
987 mp = get_mgr_priv(mgr);
992 list_for_each_entry(ovl, &mgr->overlays, list)
993 dss_ovl_setup_fifo(ovl);
996 static void dss_setup_fifos(void)
998 const int num_mgrs = omap_dss_get_num_overlay_managers();
999 struct omap_overlay_manager *mgr;
1002 for (i = 0; i < num_mgrs; ++i) {
1003 mgr = omap_dss_get_overlay_manager(i);
1004 dss_mgr_setup_fifos(mgr);
1008 int dss_mgr_enable(struct omap_overlay_manager *mgr)
1010 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1011 unsigned long flags;
1014 mutex_lock(&apply_lock);
1019 spin_lock_irqsave(&data_lock, flags);
1023 r = dss_check_settings(mgr);
1025 DSSERR("failed to enable manager %d: check_settings failed\n",
1035 if (!mgr_manual_update(mgr))
1036 mp->updating = true;
1038 spin_unlock_irqrestore(&data_lock, flags);
1040 if (!mgr_manual_update(mgr))
1041 dispc_mgr_enable(mgr->id, true);
1044 mutex_unlock(&apply_lock);
1049 mp->enabled = false;
1050 spin_unlock_irqrestore(&data_lock, flags);
1051 mutex_unlock(&apply_lock);
1055 void dss_mgr_disable(struct omap_overlay_manager *mgr)
1057 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1058 unsigned long flags;
1060 mutex_lock(&apply_lock);
1065 if (!mgr_manual_update(mgr))
1066 dispc_mgr_enable(mgr->id, false);
1068 spin_lock_irqsave(&data_lock, flags);
1070 mp->updating = false;
1071 mp->enabled = false;
1073 spin_unlock_irqrestore(&data_lock, flags);
1076 mutex_unlock(&apply_lock);
1079 int dss_mgr_set_info(struct omap_overlay_manager *mgr,
1080 struct omap_overlay_manager_info *info)
1082 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1083 unsigned long flags;
1086 r = dss_mgr_simple_check(mgr, info);
1090 spin_lock_irqsave(&data_lock, flags);
1092 mp->user_info = *info;
1093 mp->user_info_dirty = true;
1095 spin_unlock_irqrestore(&data_lock, flags);
1100 void dss_mgr_get_info(struct omap_overlay_manager *mgr,
1101 struct omap_overlay_manager_info *info)
1103 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1104 unsigned long flags;
1106 spin_lock_irqsave(&data_lock, flags);
1108 *info = mp->user_info;
1110 spin_unlock_irqrestore(&data_lock, flags);
1113 int dss_mgr_set_device(struct omap_overlay_manager *mgr,
1114 struct omap_dss_device *dssdev)
1118 mutex_lock(&apply_lock);
1120 if (dssdev->manager) {
1121 DSSERR("display '%s' already has a manager '%s'\n",
1122 dssdev->name, dssdev->manager->name);
1127 if ((mgr->supported_displays & dssdev->type) == 0) {
1128 DSSERR("display '%s' does not support manager '%s'\n",
1129 dssdev->name, mgr->name);
1134 dssdev->manager = mgr;
1135 mgr->device = dssdev;
1137 mutex_unlock(&apply_lock);
1141 mutex_unlock(&apply_lock);
1145 int dss_mgr_unset_device(struct omap_overlay_manager *mgr)
1149 mutex_lock(&apply_lock);
1152 DSSERR("failed to unset display, display not set.\n");
1158 * Don't allow currently enabled displays to have the overlay manager
1159 * pulled out from underneath them
1161 if (mgr->device->state != OMAP_DSS_DISPLAY_DISABLED) {
1166 mgr->device->manager = NULL;
1169 mutex_unlock(&apply_lock);
1173 mutex_unlock(&apply_lock);
1177 int dss_mgr_set_output(struct omap_overlay_manager *mgr,
1178 struct omap_dss_output *output)
1182 mutex_lock(&apply_lock);
1185 DSSERR("manager %s is already connected to an output\n",
1191 if ((mgr->supported_outputs & output->id) == 0) {
1192 DSSERR("output does not support manager %s\n",
1198 output->manager = mgr;
1199 mgr->output = output;
1201 mutex_unlock(&apply_lock);
1205 mutex_unlock(&apply_lock);
1209 int dss_mgr_unset_output(struct omap_overlay_manager *mgr)
1212 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1213 unsigned long flags;
1215 mutex_lock(&apply_lock);
1218 DSSERR("failed to unset output, output not set\n");
1223 spin_lock_irqsave(&data_lock, flags);
1226 DSSERR("output can't be unset when manager is enabled\n");
1231 spin_unlock_irqrestore(&data_lock, flags);
1233 mgr->output->manager = NULL;
1236 mutex_unlock(&apply_lock);
1240 spin_unlock_irqrestore(&data_lock, flags);
1242 mutex_unlock(&apply_lock);
1247 static void dss_apply_mgr_timings(struct omap_overlay_manager *mgr,
1248 const struct omap_video_timings *timings)
1250 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1252 mp->timings = *timings;
1253 mp->extra_info_dirty = true;
1256 void dss_mgr_set_timings(struct omap_overlay_manager *mgr,
1257 const struct omap_video_timings *timings)
1259 unsigned long flags;
1260 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1262 spin_lock_irqsave(&data_lock, flags);
1265 DSSERR("cannot set timings for %s: manager needs to be disabled\n",
1270 dss_apply_mgr_timings(mgr, timings);
1272 spin_unlock_irqrestore(&data_lock, flags);
1275 static void dss_apply_mgr_lcd_config(struct omap_overlay_manager *mgr,
1276 const struct dss_lcd_mgr_config *config)
1278 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1280 mp->lcd_config = *config;
1281 mp->extra_info_dirty = true;
1284 void dss_mgr_set_lcd_config(struct omap_overlay_manager *mgr,
1285 const struct dss_lcd_mgr_config *config)
1287 unsigned long flags;
1288 struct mgr_priv_data *mp = get_mgr_priv(mgr);
1290 spin_lock_irqsave(&data_lock, flags);
1293 DSSERR("cannot apply lcd config for %s: manager needs to be disabled\n",
1298 dss_apply_mgr_lcd_config(mgr, config);
1300 spin_unlock_irqrestore(&data_lock, flags);
1303 int dss_ovl_set_info(struct omap_overlay *ovl,
1304 struct omap_overlay_info *info)
1306 struct ovl_priv_data *op = get_ovl_priv(ovl);
1307 unsigned long flags;
1310 r = dss_ovl_simple_check(ovl, info);
1314 spin_lock_irqsave(&data_lock, flags);
1316 op->user_info = *info;
1317 op->user_info_dirty = true;
1319 spin_unlock_irqrestore(&data_lock, flags);
1324 void dss_ovl_get_info(struct omap_overlay *ovl,
1325 struct omap_overlay_info *info)
1327 struct ovl_priv_data *op = get_ovl_priv(ovl);
1328 unsigned long flags;
1330 spin_lock_irqsave(&data_lock, flags);
1332 *info = op->user_info;
1334 spin_unlock_irqrestore(&data_lock, flags);
1337 int dss_ovl_set_manager(struct omap_overlay *ovl,
1338 struct omap_overlay_manager *mgr)
1340 struct ovl_priv_data *op = get_ovl_priv(ovl);
1341 unsigned long flags;
1347 mutex_lock(&apply_lock);
1350 DSSERR("overlay '%s' already has a manager '%s'\n",
1351 ovl->name, ovl->manager->name);
1356 spin_lock_irqsave(&data_lock, flags);
1359 spin_unlock_irqrestore(&data_lock, flags);
1360 DSSERR("overlay has to be disabled to change the manager\n");
1365 op->channel = mgr->id;
1366 op->extra_info_dirty = true;
1369 list_add_tail(&ovl->list, &mgr->overlays);
1371 spin_unlock_irqrestore(&data_lock, flags);
1373 /* XXX: When there is an overlay on a DSI manual update display, and
1374 * the overlay is first disabled, then moved to tv, and enabled, we
1375 * seem to get SYNC_LOST_DIGIT error.
1377 * Waiting doesn't seem to help, but updating the manual update display
1378 * after disabling the overlay seems to fix this. This hints that the
1379 * overlay is perhaps somehow tied to the LCD output until the output
1382 * Userspace workaround for this is to update the LCD after disabling
1383 * the overlay, but before moving the overlay to TV.
1386 mutex_unlock(&apply_lock);
1390 mutex_unlock(&apply_lock);
1394 int dss_ovl_unset_manager(struct omap_overlay *ovl)
1396 struct ovl_priv_data *op = get_ovl_priv(ovl);
1397 unsigned long flags;
1400 mutex_lock(&apply_lock);
1402 if (!ovl->manager) {
1403 DSSERR("failed to detach overlay: manager not set\n");
1408 spin_lock_irqsave(&data_lock, flags);
1411 spin_unlock_irqrestore(&data_lock, flags);
1412 DSSERR("overlay has to be disabled to unset the manager\n");
1417 spin_unlock_irqrestore(&data_lock, flags);
1419 /* wait for pending extra_info updates to ensure the ovl is disabled */
1420 wait_pending_extra_info_updates();
1422 spin_lock_irqsave(&data_lock, flags);
1426 ovl->manager = NULL;
1427 list_del(&ovl->list);
1429 spin_unlock_irqrestore(&data_lock, flags);
1431 mutex_unlock(&apply_lock);
1435 mutex_unlock(&apply_lock);
1439 bool dss_ovl_is_enabled(struct omap_overlay *ovl)
1441 struct ovl_priv_data *op = get_ovl_priv(ovl);
1442 unsigned long flags;
1445 spin_lock_irqsave(&data_lock, flags);
1449 spin_unlock_irqrestore(&data_lock, flags);
1454 int dss_ovl_enable(struct omap_overlay *ovl)
1456 struct ovl_priv_data *op = get_ovl_priv(ovl);
1457 unsigned long flags;
1460 mutex_lock(&apply_lock);
1467 if (ovl->manager == NULL || ovl->manager->output == NULL) {
1472 spin_lock_irqsave(&data_lock, flags);
1474 op->enabling = true;
1476 r = dss_check_settings(ovl->manager);
1478 DSSERR("failed to enable overlay %d: check_settings failed\n",
1485 op->enabling = false;
1486 dss_apply_ovl_enable(ovl, true);
1491 spin_unlock_irqrestore(&data_lock, flags);
1493 mutex_unlock(&apply_lock);
1497 op->enabling = false;
1498 spin_unlock_irqrestore(&data_lock, flags);
1500 mutex_unlock(&apply_lock);
1504 int dss_ovl_disable(struct omap_overlay *ovl)
1506 struct ovl_priv_data *op = get_ovl_priv(ovl);
1507 unsigned long flags;
1510 mutex_lock(&apply_lock);
1517 if (ovl->manager == NULL || ovl->manager->output == NULL) {
1522 spin_lock_irqsave(&data_lock, flags);
1524 dss_apply_ovl_enable(ovl, false);
1528 spin_unlock_irqrestore(&data_lock, flags);
1530 mutex_unlock(&apply_lock);
1535 mutex_unlock(&apply_lock);