2 * linux/drivers/video/omap2/dss/manager.c
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
7 * Some code and ideas taken from drivers/video/omap/ driver
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
23 #define DSS_SUBSYS_NAME "MANAGER"
25 #include <linux/kernel.h>
26 #include <linux/slab.h>
27 #include <linux/module.h>
28 #include <linux/platform_device.h>
29 #include <linux/spinlock.h>
30 #include <linux/jiffies.h>
32 #include <video/omapdss.h>
36 #include "dss_features.h"
38 static int num_managers;
39 static struct list_head manager_list;
41 static ssize_t manager_name_show(struct omap_overlay_manager *mgr, char *buf)
43 return snprintf(buf, PAGE_SIZE, "%s\n", mgr->name);
46 static ssize_t manager_display_show(struct omap_overlay_manager *mgr, char *buf)
48 return snprintf(buf, PAGE_SIZE, "%s\n",
49 mgr->device ? mgr->device->name : "<none>");
52 static ssize_t manager_display_store(struct omap_overlay_manager *mgr,
53 const char *buf, size_t size)
57 struct omap_dss_device *dssdev = NULL;
59 int match(struct omap_dss_device *dssdev, void *data)
61 const char *str = data;
62 return sysfs_streq(dssdev->name, str);
65 if (buf[size-1] == '\n')
69 dssdev = omap_dss_find_device((void *)buf, match);
71 if (len > 0 && dssdev == NULL)
75 DSSDBG("display %s found\n", dssdev->name);
78 r = mgr->unset_device(mgr);
80 DSSERR("failed to unset display\n");
86 r = mgr->set_device(mgr, dssdev);
88 DSSERR("failed to set manager\n");
94 DSSERR("failed to apply dispc config\n");
101 omap_dss_put_device(dssdev);
106 static ssize_t manager_default_color_show(struct omap_overlay_manager *mgr,
109 return snprintf(buf, PAGE_SIZE, "%#x\n", mgr->info.default_color);
112 static ssize_t manager_default_color_store(struct omap_overlay_manager *mgr,
113 const char *buf, size_t size)
115 struct omap_overlay_manager_info info;
119 r = kstrtouint(buf, 0, &color);
123 mgr->get_manager_info(mgr, &info);
125 info.default_color = color;
127 r = mgr->set_manager_info(mgr, &info);
138 static const char *trans_key_type_str[] = {
143 static ssize_t manager_trans_key_type_show(struct omap_overlay_manager *mgr,
146 enum omap_dss_trans_key_type key_type;
148 key_type = mgr->info.trans_key_type;
149 BUG_ON(key_type >= ARRAY_SIZE(trans_key_type_str));
151 return snprintf(buf, PAGE_SIZE, "%s\n", trans_key_type_str[key_type]);
154 static ssize_t manager_trans_key_type_store(struct omap_overlay_manager *mgr,
155 const char *buf, size_t size)
157 enum omap_dss_trans_key_type key_type;
158 struct omap_overlay_manager_info info;
161 for (key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
162 key_type < ARRAY_SIZE(trans_key_type_str); key_type++) {
163 if (sysfs_streq(buf, trans_key_type_str[key_type]))
167 if (key_type == ARRAY_SIZE(trans_key_type_str))
170 mgr->get_manager_info(mgr, &info);
172 info.trans_key_type = key_type;
174 r = mgr->set_manager_info(mgr, &info);
185 static ssize_t manager_trans_key_value_show(struct omap_overlay_manager *mgr,
188 return snprintf(buf, PAGE_SIZE, "%#x\n", mgr->info.trans_key);
191 static ssize_t manager_trans_key_value_store(struct omap_overlay_manager *mgr,
192 const char *buf, size_t size)
194 struct omap_overlay_manager_info info;
198 r = kstrtouint(buf, 0, &key_value);
202 mgr->get_manager_info(mgr, &info);
204 info.trans_key = key_value;
206 r = mgr->set_manager_info(mgr, &info);
217 static ssize_t manager_trans_key_enabled_show(struct omap_overlay_manager *mgr,
220 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.trans_enabled);
223 static ssize_t manager_trans_key_enabled_store(struct omap_overlay_manager *mgr,
224 const char *buf, size_t size)
226 struct omap_overlay_manager_info info;
230 r = strtobool(buf, &enable);
234 mgr->get_manager_info(mgr, &info);
236 info.trans_enabled = enable;
238 r = mgr->set_manager_info(mgr, &info);
249 static ssize_t manager_alpha_blending_enabled_show(
250 struct omap_overlay_manager *mgr, char *buf)
252 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.alpha_enabled);
255 static ssize_t manager_alpha_blending_enabled_store(
256 struct omap_overlay_manager *mgr,
257 const char *buf, size_t size)
259 struct omap_overlay_manager_info info;
263 r = strtobool(buf, &enable);
267 mgr->get_manager_info(mgr, &info);
269 info.alpha_enabled = enable;
271 r = mgr->set_manager_info(mgr, &info);
282 static ssize_t manager_cpr_enable_show(struct omap_overlay_manager *mgr,
285 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.cpr_enable);
288 static ssize_t manager_cpr_enable_store(struct omap_overlay_manager *mgr,
289 const char *buf, size_t size)
291 struct omap_overlay_manager_info info;
295 if (!dss_has_feature(FEAT_CPR))
298 r = strtobool(buf, &enable);
302 mgr->get_manager_info(mgr, &info);
304 if (info.cpr_enable == enable)
307 info.cpr_enable = enable;
309 r = mgr->set_manager_info(mgr, &info);
320 static ssize_t manager_cpr_coef_show(struct omap_overlay_manager *mgr,
323 struct omap_overlay_manager_info info;
325 mgr->get_manager_info(mgr, &info);
327 return snprintf(buf, PAGE_SIZE,
328 "%d %d %d %d %d %d %d %d %d\n",
340 static ssize_t manager_cpr_coef_store(struct omap_overlay_manager *mgr,
341 const char *buf, size_t size)
343 struct omap_overlay_manager_info info;
344 struct omap_dss_cpr_coefs coefs;
348 if (!dss_has_feature(FEAT_CPR))
351 if (sscanf(buf, "%hd %hd %hd %hd %hd %hd %hd %hd %hd",
352 &coefs.rr, &coefs.rg, &coefs.rb,
353 &coefs.gr, &coefs.gg, &coefs.gb,
354 &coefs.br, &coefs.bg, &coefs.bb) != 9)
357 arr = (s16[]){ coefs.rr, coefs.rg, coefs.rb,
358 coefs.gr, coefs.gg, coefs.gb,
359 coefs.br, coefs.bg, coefs.bb };
361 for (i = 0; i < 9; ++i) {
362 if (arr[i] < -512 || arr[i] > 511)
366 mgr->get_manager_info(mgr, &info);
368 info.cpr_coefs = coefs;
370 r = mgr->set_manager_info(mgr, &info);
381 struct manager_attribute {
382 struct attribute attr;
383 ssize_t (*show)(struct omap_overlay_manager *, char *);
384 ssize_t (*store)(struct omap_overlay_manager *, const char *, size_t);
387 #define MANAGER_ATTR(_name, _mode, _show, _store) \
388 struct manager_attribute manager_attr_##_name = \
389 __ATTR(_name, _mode, _show, _store)
391 static MANAGER_ATTR(name, S_IRUGO, manager_name_show, NULL);
392 static MANAGER_ATTR(display, S_IRUGO|S_IWUSR,
393 manager_display_show, manager_display_store);
394 static MANAGER_ATTR(default_color, S_IRUGO|S_IWUSR,
395 manager_default_color_show, manager_default_color_store);
396 static MANAGER_ATTR(trans_key_type, S_IRUGO|S_IWUSR,
397 manager_trans_key_type_show, manager_trans_key_type_store);
398 static MANAGER_ATTR(trans_key_value, S_IRUGO|S_IWUSR,
399 manager_trans_key_value_show, manager_trans_key_value_store);
400 static MANAGER_ATTR(trans_key_enabled, S_IRUGO|S_IWUSR,
401 manager_trans_key_enabled_show,
402 manager_trans_key_enabled_store);
403 static MANAGER_ATTR(alpha_blending_enabled, S_IRUGO|S_IWUSR,
404 manager_alpha_blending_enabled_show,
405 manager_alpha_blending_enabled_store);
406 static MANAGER_ATTR(cpr_enable, S_IRUGO|S_IWUSR,
407 manager_cpr_enable_show,
408 manager_cpr_enable_store);
409 static MANAGER_ATTR(cpr_coef, S_IRUGO|S_IWUSR,
410 manager_cpr_coef_show,
411 manager_cpr_coef_store);
414 static struct attribute *manager_sysfs_attrs[] = {
415 &manager_attr_name.attr,
416 &manager_attr_display.attr,
417 &manager_attr_default_color.attr,
418 &manager_attr_trans_key_type.attr,
419 &manager_attr_trans_key_value.attr,
420 &manager_attr_trans_key_enabled.attr,
421 &manager_attr_alpha_blending_enabled.attr,
422 &manager_attr_cpr_enable.attr,
423 &manager_attr_cpr_coef.attr,
427 static ssize_t manager_attr_show(struct kobject *kobj, struct attribute *attr,
430 struct omap_overlay_manager *manager;
431 struct manager_attribute *manager_attr;
433 manager = container_of(kobj, struct omap_overlay_manager, kobj);
434 manager_attr = container_of(attr, struct manager_attribute, attr);
436 if (!manager_attr->show)
439 return manager_attr->show(manager, buf);
442 static ssize_t manager_attr_store(struct kobject *kobj, struct attribute *attr,
443 const char *buf, size_t size)
445 struct omap_overlay_manager *manager;
446 struct manager_attribute *manager_attr;
448 manager = container_of(kobj, struct omap_overlay_manager, kobj);
449 manager_attr = container_of(attr, struct manager_attribute, attr);
451 if (!manager_attr->store)
454 return manager_attr->store(manager, buf, size);
457 static const struct sysfs_ops manager_sysfs_ops = {
458 .show = manager_attr_show,
459 .store = manager_attr_store,
462 static struct kobj_type manager_ktype = {
463 .sysfs_ops = &manager_sysfs_ops,
464 .default_attrs = manager_sysfs_attrs,
468 * We have 4 levels of cache for the dispc settings. First two are in SW and
469 * the latter two in HW.
471 * +--------------------+
472 * |overlay/manager_info|
473 * +--------------------+
477 * +--------------------+
479 * +--------------------+
483 * +--------------------+
484 * | shadow registers |
485 * +--------------------+
487 * VFP or lcd/digit_enable
489 * +--------------------+
491 * +--------------------+
494 struct overlay_cache_data {
495 /* If true, cache changed, but not written to shadow registers. Set
496 * in apply(), cleared when registers written. */
498 /* If true, shadow registers contain changed values not yet in real
499 * registers. Set when writing to shadow registers, cleared at
505 struct omap_overlay_info info;
507 enum omap_channel channel;
515 struct manager_cache_data {
516 /* If true, cache changed, but not written to shadow registers. Set
517 * in apply(), cleared when registers written. */
519 /* If true, shadow registers contain changed values not yet in real
520 * registers. Set when writing to shadow registers, cleared at
524 struct omap_overlay_manager_info info;
527 bool do_manual_update;
529 /* manual update region */
532 /* enlarge the update area if the update area contains scaled
534 bool enlarge_update_area;
539 struct overlay_cache_data overlay_cache[MAX_DSS_OVERLAYS];
540 struct manager_cache_data manager_cache[MAX_DSS_MANAGERS];
547 static int omap_dss_set_device(struct omap_overlay_manager *mgr,
548 struct omap_dss_device *dssdev)
553 if (dssdev->manager) {
554 DSSERR("display '%s' already has a manager '%s'\n",
555 dssdev->name, dssdev->manager->name);
559 if ((mgr->supported_displays & dssdev->type) == 0) {
560 DSSERR("display '%s' does not support manager '%s'\n",
561 dssdev->name, mgr->name);
565 for (i = 0; i < mgr->num_overlays; i++) {
566 struct omap_overlay *ovl = mgr->overlays[i];
568 if (ovl->manager != mgr || !ovl->info.enabled)
571 r = dss_check_overlay(ovl, dssdev);
576 dssdev->manager = mgr;
577 mgr->device = dssdev;
578 mgr->device_changed = true;
583 static int omap_dss_unset_device(struct omap_overlay_manager *mgr)
586 DSSERR("failed to unset display, display not set.\n");
591 * Don't allow currently enabled displays to have the overlay manager
592 * pulled out from underneath them
594 if (mgr->device->state != OMAP_DSS_DISPLAY_DISABLED)
597 mgr->device->manager = NULL;
599 mgr->device_changed = true;
604 static int dss_mgr_wait_for_vsync(struct omap_overlay_manager *mgr)
606 unsigned long timeout = msecs_to_jiffies(500);
609 if (mgr->device->type == OMAP_DISPLAY_TYPE_VENC) {
610 irq = DISPC_IRQ_EVSYNC_ODD;
611 } else if (mgr->device->type == OMAP_DISPLAY_TYPE_HDMI) {
612 irq = DISPC_IRQ_EVSYNC_EVEN;
614 if (mgr->id == OMAP_DSS_CHANNEL_LCD)
615 irq = DISPC_IRQ_VSYNC;
617 irq = DISPC_IRQ_VSYNC2;
619 return omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
622 static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
624 unsigned long timeout = msecs_to_jiffies(500);
625 struct manager_cache_data *mc;
629 struct omap_dss_device *dssdev = mgr->device;
631 if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
634 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
637 if (dssdev->type == OMAP_DISPLAY_TYPE_VENC
638 || dssdev->type == OMAP_DISPLAY_TYPE_HDMI) {
639 irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
641 irq = (dssdev->manager->id == OMAP_DSS_CHANNEL_LCD) ?
642 DISPC_IRQ_VSYNC : DISPC_IRQ_VSYNC2;
645 mc = &dss_cache.manager_cache[mgr->id];
649 bool shadow_dirty, dirty;
651 spin_lock_irqsave(&dss_cache.lock, flags);
653 shadow_dirty = mc->shadow_dirty;
654 spin_unlock_irqrestore(&dss_cache.lock, flags);
656 if (!dirty && !shadow_dirty) {
661 /* 4 iterations is the worst case:
662 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
663 * 2 - first VSYNC, dirty = true
664 * 3 - dirty = false, shadow_dirty = true
665 * 4 - shadow_dirty = false */
667 DSSERR("mgr(%d)->wait_for_go() not finishing\n",
673 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
674 if (r == -ERESTARTSYS)
678 DSSERR("mgr(%d)->wait_for_go() timeout\n", mgr->id);
686 int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
688 unsigned long timeout = msecs_to_jiffies(500);
689 struct overlay_cache_data *oc;
690 struct omap_dss_device *dssdev;
698 dssdev = ovl->manager->device;
700 if (!dssdev || dssdev->state != OMAP_DSS_DISPLAY_ACTIVE)
703 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE)
706 if (dssdev->type == OMAP_DISPLAY_TYPE_VENC
707 || dssdev->type == OMAP_DISPLAY_TYPE_HDMI) {
708 irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
710 irq = (dssdev->manager->id == OMAP_DSS_CHANNEL_LCD) ?
711 DISPC_IRQ_VSYNC : DISPC_IRQ_VSYNC2;
714 oc = &dss_cache.overlay_cache[ovl->id];
718 bool shadow_dirty, dirty;
720 spin_lock_irqsave(&dss_cache.lock, flags);
722 shadow_dirty = oc->shadow_dirty;
723 spin_unlock_irqrestore(&dss_cache.lock, flags);
725 if (!dirty && !shadow_dirty) {
730 /* 4 iterations is the worst case:
731 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
732 * 2 - first VSYNC, dirty = true
733 * 3 - dirty = false, shadow_dirty = true
734 * 4 - shadow_dirty = false */
736 DSSERR("ovl(%d)->wait_for_go() not finishing\n",
742 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
743 if (r == -ERESTARTSYS)
747 DSSERR("ovl(%d)->wait_for_go() timeout\n", ovl->id);
755 static int overlay_enabled(struct omap_overlay *ovl)
757 return ovl->info.enabled && ovl->manager && ovl->manager->device;
760 /* Is rect1 a subset of rect2? */
761 static bool rectangle_subset(int x1, int y1, int w1, int h1,
762 int x2, int y2, int w2, int h2)
764 if (x1 < x2 || y1 < y2)
767 if (x1 + w1 > x2 + w2)
770 if (y1 + h1 > y2 + h2)
776 /* Do rect1 and rect2 overlap? */
777 static bool rectangle_intersects(int x1, int y1, int w1, int h1,
778 int x2, int y2, int w2, int h2)
795 static bool dispc_is_overlay_scaled(struct overlay_cache_data *oc)
797 struct omap_overlay_info *oi = &oc->info;
799 if (oi->out_width != 0 && oi->width != oi->out_width)
802 if (oi->out_height != 0 && oi->height != oi->out_height)
808 static int configure_overlay(enum omap_plane plane)
810 struct overlay_cache_data *c;
811 struct manager_cache_data *mc;
812 struct omap_overlay_info *oi, new_oi;
813 struct omap_overlay_manager_info *mi;
818 u16 orig_w, orig_h, orig_outw, orig_outh;
820 DSSDBGF("%d", plane);
822 c = &dss_cache.overlay_cache[plane];
826 dispc_ovl_enable(plane, 0);
830 mc = &dss_cache.manager_cache[c->channel];
837 outw = oi->out_width == 0 ? oi->width : oi->out_width;
838 outh = oi->out_height == 0 ? oi->height : oi->out_height;
846 if (mc->manual_update && mc->do_manual_update) {
848 unsigned scale_x_m = w, scale_x_d = outw;
849 unsigned scale_y_m = h, scale_y_d = outh;
851 /* If the overlay is outside the update region, disable it */
852 if (!rectangle_intersects(mc->x, mc->y, mc->w, mc->h,
854 dispc_ovl_enable(plane, 0);
858 switch (oi->color_mode) {
859 case OMAP_DSS_COLOR_NV12:
862 case OMAP_DSS_COLOR_RGB16:
863 case OMAP_DSS_COLOR_ARGB16:
864 case OMAP_DSS_COLOR_YUV2:
865 case OMAP_DSS_COLOR_UYVY:
866 case OMAP_DSS_COLOR_RGBA16:
867 case OMAP_DSS_COLOR_RGBX16:
868 case OMAP_DSS_COLOR_ARGB16_1555:
869 case OMAP_DSS_COLOR_XRGB16_1555:
873 case OMAP_DSS_COLOR_RGB24P:
877 case OMAP_DSS_COLOR_RGB24U:
878 case OMAP_DSS_COLOR_ARGB32:
879 case OMAP_DSS_COLOR_RGBA32:
880 case OMAP_DSS_COLOR_RGBX32:
888 if (mc->x > oi->pos_x) {
890 outw -= (mc->x - oi->pos_x);
891 paddr += (mc->x - oi->pos_x) *
892 scale_x_m / scale_x_d * bpp / 8;
894 x = oi->pos_x - mc->x;
897 if (mc->y > oi->pos_y) {
899 outh -= (mc->y - oi->pos_y);
900 paddr += (mc->y - oi->pos_y) *
901 scale_y_m / scale_y_d *
902 oi->screen_width * bpp / 8;
904 y = oi->pos_y - mc->y;
907 if (mc->w < (x + outw))
908 outw -= (x + outw) - (mc->w);
910 if (mc->h < (y + outh))
911 outh -= (y + outh) - (mc->h);
913 w = w * outw / orig_outw;
914 h = h * outh / orig_outh;
916 /* YUV mode overlay's input width has to be even and the
917 * algorithm above may adjust the width to be odd.
919 * Here we adjust the width if needed, preferring to increase
920 * the width if the original width was bigger.
923 (oi->color_mode == OMAP_DSS_COLOR_YUV2 ||
924 oi->color_mode == OMAP_DSS_COLOR_UYVY)) {
934 /* update new_oi members which could have been possibly updated */
939 new_oi.out_width = outw;
940 new_oi.out_height = outh;
941 new_oi.paddr = paddr;
943 r = dispc_ovl_setup(plane, &new_oi, c->ilace, c->channel,
944 c->replication, c->fifo_low, c->fifo_high);
946 /* this shouldn't happen */
947 DSSERR("dispc_ovl_setup failed for ovl %d\n", plane);
948 dispc_ovl_enable(plane, 0);
952 dispc_ovl_enable(plane, 1);
957 static void configure_manager(enum omap_channel channel)
959 struct omap_overlay_manager_info *mi;
961 DSSDBGF("%d", channel);
963 /* picking info from the cache */
964 mi = &dss_cache.manager_cache[channel].info;
966 dispc_mgr_set_default_color(channel, mi->default_color);
967 dispc_mgr_set_trans_key(channel, mi->trans_key_type, mi->trans_key);
968 dispc_mgr_enable_trans_key(channel, mi->trans_enabled);
969 dispc_mgr_enable_alpha_blending(channel, mi->alpha_enabled);
970 if (dss_has_feature(FEAT_CPR)) {
971 dispc_mgr_enable_cpr(channel, mi->cpr_enable);
972 dispc_mgr_set_cpr_coef(channel, &mi->cpr_coefs);
976 /* configure_dispc() tries to write values from cache to shadow registers.
977 * It writes only to those managers/overlays that are not busy.
978 * returns 0 if everything could be written to shadow registers.
979 * returns 1 if not everything could be written to shadow registers. */
980 static int configure_dispc(void)
982 struct overlay_cache_data *oc;
983 struct manager_cache_data *mc;
984 const int num_ovls = dss_feat_get_num_ovls();
985 const int num_mgrs = dss_feat_get_num_mgrs();
988 bool mgr_busy[MAX_DSS_MANAGERS];
989 bool mgr_go[MAX_DSS_MANAGERS];
995 for (i = 0; i < num_mgrs; i++) {
996 mgr_busy[i] = dispc_mgr_go_busy(i);
1000 /* Commit overlay settings */
1001 for (i = 0; i < num_ovls; ++i) {
1002 oc = &dss_cache.overlay_cache[i];
1003 mc = &dss_cache.manager_cache[oc->channel];
1008 if (mc->manual_update && !mc->do_manual_update)
1011 if (mgr_busy[oc->channel]) {
1016 r = configure_overlay(i);
1018 DSSERR("configure_overlay %d failed\n", i);
1021 oc->shadow_dirty = true;
1022 mgr_go[oc->channel] = true;
1025 /* Commit manager settings */
1026 for (i = 0; i < num_mgrs; ++i) {
1027 mc = &dss_cache.manager_cache[i];
1032 if (mc->manual_update && !mc->do_manual_update)
1040 configure_manager(i);
1042 mc->shadow_dirty = true;
1047 for (i = 0; i < num_mgrs; ++i) {
1048 mc = &dss_cache.manager_cache[i];
1053 /* We don't need GO with manual update display. LCD iface will
1054 * always be turned off after frame, and new settings will be
1055 * taken in to use at next update */
1056 if (!mc->manual_update)
1068 /* Make the coordinates even. There are some strange problems with OMAP and
1069 * partial DSI update when the update widths are odd. */
1070 static void make_even(u16 *x, u16 *w)
1084 /* Configure dispc for partial update. Return possibly modified update
1086 void dss_setup_partial_planes(struct omap_dss_device *dssdev,
1087 u16 *xi, u16 *yi, u16 *wi, u16 *hi, bool enlarge_update_area)
1089 struct overlay_cache_data *oc;
1090 struct manager_cache_data *mc;
1091 struct omap_overlay_info *oi;
1092 const int num_ovls = dss_feat_get_num_ovls();
1093 struct omap_overlay_manager *mgr;
1096 unsigned long flags;
1104 DSSDBG("dispc_setup_partial_planes %d,%d %dx%d\n",
1105 *xi, *yi, *wi, *hi);
1107 mgr = dssdev->manager;
1110 DSSDBG("no manager\n");
1116 spin_lock_irqsave(&dss_cache.lock, flags);
1119 * Execute the outer loop until the inner loop has completed
1120 * once without increasing the update area. This will ensure that
1121 * all scaled overlays end up completely within the update area.
1124 area_changed = false;
1126 /* We need to show the whole overlay if it is scaled. So look
1127 * for those, and make the update area larger if found.
1128 * Also mark the overlay cache dirty */
1129 for (i = 0; i < num_ovls; ++i) {
1130 unsigned x1, y1, x2, y2;
1131 unsigned outw, outh;
1133 oc = &dss_cache.overlay_cache[i];
1136 if (oc->channel != mgr->id)
1141 if (!enlarge_update_area)
1147 if (!dispc_is_overlay_scaled(oc))
1150 outw = oi->out_width == 0 ?
1151 oi->width : oi->out_width;
1152 outh = oi->out_height == 0 ?
1153 oi->height : oi->out_height;
1155 /* is the overlay outside the update region? */
1156 if (!rectangle_intersects(x, y, w, h,
1157 oi->pos_x, oi->pos_y,
1161 /* if the overlay totally inside the update region? */
1162 if (rectangle_subset(oi->pos_x, oi->pos_y, outw, outh,
1176 if ((x + w) < (oi->pos_x + outw))
1177 x2 = oi->pos_x + outw;
1181 if ((y + h) < (oi->pos_y + outh))
1182 y2 = oi->pos_y + outh;
1193 DSSDBG("changing upd area due to ovl(%d) "
1194 "scaling %d,%d %dx%d\n",
1197 area_changed = true;
1199 } while (area_changed);
1201 mc = &dss_cache.manager_cache[mgr->id];
1202 mc->do_manual_update = true;
1203 mc->enlarge_update_area = enlarge_update_area;
1211 mc->do_manual_update = false;
1213 spin_unlock_irqrestore(&dss_cache.lock, flags);
1221 void dss_start_update(struct omap_dss_device *dssdev)
1223 struct manager_cache_data *mc;
1224 struct overlay_cache_data *oc;
1225 const int num_ovls = dss_feat_get_num_ovls();
1226 const int num_mgrs = dss_feat_get_num_mgrs();
1227 struct omap_overlay_manager *mgr;
1230 mgr = dssdev->manager;
1232 for (i = 0; i < num_ovls; ++i) {
1233 oc = &dss_cache.overlay_cache[i];
1234 if (oc->channel != mgr->id)
1237 oc->shadow_dirty = false;
1240 for (i = 0; i < num_mgrs; ++i) {
1241 mc = &dss_cache.manager_cache[i];
1245 mc->shadow_dirty = false;
1248 dssdev->manager->enable(dssdev->manager);
1251 static void dss_apply_irq_handler(void *data, u32 mask)
1253 struct manager_cache_data *mc;
1254 struct overlay_cache_data *oc;
1255 const int num_ovls = dss_feat_get_num_ovls();
1256 const int num_mgrs = dss_feat_get_num_mgrs();
1258 bool mgr_busy[MAX_DSS_MANAGERS];
1261 for (i = 0; i < num_mgrs; i++)
1262 mgr_busy[i] = dispc_mgr_go_busy(i);
1264 spin_lock(&dss_cache.lock);
1266 for (i = 0; i < num_ovls; ++i) {
1267 oc = &dss_cache.overlay_cache[i];
1268 if (!mgr_busy[oc->channel])
1269 oc->shadow_dirty = false;
1272 for (i = 0; i < num_mgrs; ++i) {
1273 mc = &dss_cache.manager_cache[i];
1275 mc->shadow_dirty = false;
1278 r = configure_dispc();
1282 /* re-read busy flags */
1283 for (i = 0; i < num_mgrs; i++)
1284 mgr_busy[i] = dispc_mgr_go_busy(i);
1286 /* keep running as long as there are busy managers, so that
1287 * we can collect overlay-applied information */
1288 for (i = 0; i < num_mgrs; ++i) {
1293 irq_mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
1294 DISPC_IRQ_EVSYNC_EVEN;
1295 if (dss_has_feature(FEAT_MGR_LCD2))
1296 irq_mask |= DISPC_IRQ_VSYNC2;
1298 omap_dispc_unregister_isr(dss_apply_irq_handler, NULL, irq_mask);
1299 dss_cache.irq_enabled = false;
1302 spin_unlock(&dss_cache.lock);
1305 static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
1307 struct overlay_cache_data *oc;
1308 struct manager_cache_data *mc;
1310 struct omap_overlay *ovl;
1311 int num_planes_enabled = 0;
1313 unsigned long flags;
1316 DSSDBG("omap_dss_mgr_apply(%s)\n", mgr->name);
1318 r = dispc_runtime_get();
1322 spin_lock_irqsave(&dss_cache.lock, flags);
1324 /* Configure overlays */
1325 for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
1326 struct omap_dss_device *dssdev;
1328 ovl = omap_dss_get_overlay(i);
1330 oc = &dss_cache.overlay_cache[ovl->id];
1332 if (ovl->manager_changed) {
1333 ovl->manager_changed = false;
1334 ovl->info_dirty = true;
1337 if (!overlay_enabled(ovl)) {
1339 oc->enabled = false;
1345 if (!ovl->info_dirty) {
1347 ++num_planes_enabled;
1351 dssdev = ovl->manager->device;
1353 if (dss_check_overlay(ovl, dssdev)) {
1355 oc->enabled = false;
1361 ovl->info_dirty = false;
1363 oc->info = ovl->info;
1366 dss_use_replication(dssdev, ovl->info.color_mode);
1368 oc->ilace = dssdev->type == OMAP_DISPLAY_TYPE_VENC;
1370 oc->channel = ovl->manager->id;
1374 ++num_planes_enabled;
1377 /* Configure managers */
1378 list_for_each_entry(mgr, &manager_list, list) {
1379 struct omap_dss_device *dssdev;
1381 mc = &dss_cache.manager_cache[mgr->id];
1383 if (mgr->device_changed) {
1384 mgr->device_changed = false;
1385 mgr->info_dirty = true;
1388 if (!mgr->info_dirty)
1394 dssdev = mgr->device;
1396 mgr->info_dirty = false;
1398 mc->info = mgr->info;
1401 dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
1404 /* XXX TODO: Try to get fifomerge working. The problem is that it
1405 * affects both managers, not individually but at the same time. This
1406 * means the change has to be well synchronized. I guess the proper way
1407 * is to have a two step process for fifo merge:
1409 * 1. disable other planes, leaving one plane enabled
1410 * 2. wait until the planes are disabled on HW
1411 * 3. config merged fifo thresholds, enable fifomerge
1412 * fifomerge disable:
1413 * 1. config unmerged fifo thresholds, disable fifomerge
1414 * 2. wait until fifo changes are in HW
1417 use_fifomerge = false;
1419 /* Configure overlay fifos */
1420 for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
1421 struct omap_dss_device *dssdev;
1422 u32 size, burst_size;
1424 ovl = omap_dss_get_overlay(i);
1426 oc = &dss_cache.overlay_cache[ovl->id];
1431 dssdev = ovl->manager->device;
1433 size = dispc_ovl_get_fifo_size(ovl->id);
1437 burst_size = dispc_ovl_get_burst_size(ovl->id);
1439 switch (dssdev->type) {
1440 case OMAP_DISPLAY_TYPE_DPI:
1441 case OMAP_DISPLAY_TYPE_DBI:
1442 case OMAP_DISPLAY_TYPE_SDI:
1443 case OMAP_DISPLAY_TYPE_VENC:
1444 case OMAP_DISPLAY_TYPE_HDMI:
1445 default_get_overlay_fifo_thresholds(ovl->id, size,
1446 burst_size, &oc->fifo_low,
1449 #ifdef CONFIG_OMAP2_DSS_DSI
1450 case OMAP_DISPLAY_TYPE_DSI:
1451 dsi_get_overlay_fifo_thresholds(ovl->id, size,
1452 burst_size, &oc->fifo_low,
1462 if (!dss_cache.irq_enabled) {
1465 mask = DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
1466 DISPC_IRQ_EVSYNC_EVEN;
1467 if (dss_has_feature(FEAT_MGR_LCD2))
1468 mask |= DISPC_IRQ_VSYNC2;
1470 r = omap_dispc_register_isr(dss_apply_irq_handler, NULL, mask);
1471 dss_cache.irq_enabled = true;
1475 spin_unlock_irqrestore(&dss_cache.lock, flags);
1477 dispc_runtime_put();
1482 static int dss_check_manager(struct omap_overlay_manager *mgr)
1484 /* OMAP supports only graphics source transparency color key and alpha
1485 * blending simultaneously. See TRM 15.4.2.4.2.2 Alpha Mode */
1487 if (mgr->info.alpha_enabled && mgr->info.trans_enabled &&
1488 mgr->info.trans_key_type != OMAP_DSS_COLOR_KEY_GFX_DST)
1494 static int omap_dss_mgr_set_info(struct omap_overlay_manager *mgr,
1495 struct omap_overlay_manager_info *info)
1498 struct omap_overlay_manager_info old_info;
1500 old_info = mgr->info;
1503 r = dss_check_manager(mgr);
1505 mgr->info = old_info;
1509 mgr->info_dirty = true;
1514 static void omap_dss_mgr_get_info(struct omap_overlay_manager *mgr,
1515 struct omap_overlay_manager_info *info)
1520 static int dss_mgr_enable(struct omap_overlay_manager *mgr)
1522 dispc_mgr_enable(mgr->id, 1);
1526 static int dss_mgr_disable(struct omap_overlay_manager *mgr)
1528 dispc_mgr_enable(mgr->id, 0);
1532 static void omap_dss_add_overlay_manager(struct omap_overlay_manager *manager)
1535 list_add_tail(&manager->list, &manager_list);
1538 int dss_init_overlay_managers(struct platform_device *pdev)
1542 spin_lock_init(&dss_cache.lock);
1544 INIT_LIST_HEAD(&manager_list);
1548 for (i = 0; i < dss_feat_get_num_mgrs(); ++i) {
1549 struct omap_overlay_manager *mgr;
1550 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1552 BUG_ON(mgr == NULL);
1557 mgr->id = OMAP_DSS_CHANNEL_LCD;
1561 mgr->id = OMAP_DSS_CHANNEL_DIGIT;
1565 mgr->id = OMAP_DSS_CHANNEL_LCD2;
1569 mgr->set_device = &omap_dss_set_device;
1570 mgr->unset_device = &omap_dss_unset_device;
1571 mgr->apply = &omap_dss_mgr_apply;
1572 mgr->set_manager_info = &omap_dss_mgr_set_info;
1573 mgr->get_manager_info = &omap_dss_mgr_get_info;
1574 mgr->wait_for_go = &dss_mgr_wait_for_go;
1575 mgr->wait_for_vsync = &dss_mgr_wait_for_vsync;
1577 mgr->enable = &dss_mgr_enable;
1578 mgr->disable = &dss_mgr_disable;
1581 mgr->supported_displays =
1582 dss_feat_get_supported_displays(mgr->id);
1584 dss_overlay_setup_dispc_manager(mgr);
1586 omap_dss_add_overlay_manager(mgr);
1588 r = kobject_init_and_add(&mgr->kobj, &manager_ktype,
1589 &pdev->dev.kobj, "manager%d", i);
1592 DSSERR("failed to create sysfs file\n");
1600 void dss_uninit_overlay_managers(struct platform_device *pdev)
1602 struct omap_overlay_manager *mgr;
1604 while (!list_empty(&manager_list)) {
1605 mgr = list_first_entry(&manager_list,
1606 struct omap_overlay_manager, list);
1607 list_del(&mgr->list);
1608 kobject_del(&mgr->kobj);
1609 kobject_put(&mgr->kobj);
1616 int omap_dss_get_num_overlay_managers(void)
1618 return num_managers;
1620 EXPORT_SYMBOL(omap_dss_get_num_overlay_managers);
1622 struct omap_overlay_manager *omap_dss_get_overlay_manager(int num)
1625 struct omap_overlay_manager *mgr;
1627 list_for_each_entry(mgr, &manager_list, list) {
1634 EXPORT_SYMBOL(omap_dss_get_overlay_manager);