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path: root/drivers/video/omap2/dss/manager.c
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Diffstat (limited to 'drivers/video/omap2/dss/manager.c')
-rw-r--r--drivers/video/omap2/dss/manager.c1520
1 files changed, 1520 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
new file mode 100644
index 000000000000..0820986d4a68
--- /dev/null
+++ b/drivers/video/omap2/dss/manager.c
@@ -0,0 +1,1520 @@
1/*
2 * linux/drivers/video/omap2/dss/manager.c
3 *
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6 *
7 * Some code and ideas taken from drivers/video/omap/ driver
8 * by Imre Deak.
9 *
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.
13 *
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
17 * more details.
18 *
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/>.
21 */
22
23#define DSS_SUBSYS_NAME "MANAGER"
24
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>
31
32#include <plat/display.h>
33#include <plat/cpu.h>
34
35#include "dss.h"
36
37static int num_managers;
38static struct list_head manager_list;
39
40static ssize_t manager_name_show(struct omap_overlay_manager *mgr, char *buf)
41{
42 return snprintf(buf, PAGE_SIZE, "%s\n", mgr->name);
43}
44
45static ssize_t manager_display_show(struct omap_overlay_manager *mgr, char *buf)
46{
47 return snprintf(buf, PAGE_SIZE, "%s\n",
48 mgr->device ? mgr->device->name : "<none>");
49}
50
51static ssize_t manager_display_store(struct omap_overlay_manager *mgr,
52 const char *buf, size_t size)
53{
54 int r = 0;
55 size_t len = size;
56 struct omap_dss_device *dssdev = NULL;
57
58 int match(struct omap_dss_device *dssdev, void *data)
59 {
60 const char *str = data;
61 return sysfs_streq(dssdev->name, str);
62 }
63
64 if (buf[size-1] == '\n')
65 --len;
66
67 if (len > 0)
68 dssdev = omap_dss_find_device((void *)buf, match);
69
70 if (len > 0 && dssdev == NULL)
71 return -EINVAL;
72
73 if (dssdev)
74 DSSDBG("display %s found\n", dssdev->name);
75
76 if (mgr->device) {
77 r = mgr->unset_device(mgr);
78 if (r) {
79 DSSERR("failed to unset display\n");
80 goto put_device;
81 }
82 }
83
84 if (dssdev) {
85 r = mgr->set_device(mgr, dssdev);
86 if (r) {
87 DSSERR("failed to set manager\n");
88 goto put_device;
89 }
90
91 r = mgr->apply(mgr);
92 if (r) {
93 DSSERR("failed to apply dispc config\n");
94 goto put_device;
95 }
96 }
97
98put_device:
99 if (dssdev)
100 omap_dss_put_device(dssdev);
101
102 return r ? r : size;
103}
104
105static ssize_t manager_default_color_show(struct omap_overlay_manager *mgr,
106 char *buf)
107{
108 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.default_color);
109}
110
111static ssize_t manager_default_color_store(struct omap_overlay_manager *mgr,
112 const char *buf, size_t size)
113{
114 struct omap_overlay_manager_info info;
115 u32 color;
116 int r;
117
118 if (sscanf(buf, "%d", &color) != 1)
119 return -EINVAL;
120
121 mgr->get_manager_info(mgr, &info);
122
123 info.default_color = color;
124
125 r = mgr->set_manager_info(mgr, &info);
126 if (r)
127 return r;
128
129 r = mgr->apply(mgr);
130 if (r)
131 return r;
132
133 return size;
134}
135
136static const char *trans_key_type_str[] = {
137 "gfx-destination",
138 "video-source",
139};
140
141static ssize_t manager_trans_key_type_show(struct omap_overlay_manager *mgr,
142 char *buf)
143{
144 enum omap_dss_trans_key_type key_type;
145
146 key_type = mgr->info.trans_key_type;
147 BUG_ON(key_type >= ARRAY_SIZE(trans_key_type_str));
148
149 return snprintf(buf, PAGE_SIZE, "%s\n", trans_key_type_str[key_type]);
150}
151
152static ssize_t manager_trans_key_type_store(struct omap_overlay_manager *mgr,
153 const char *buf, size_t size)
154{
155 enum omap_dss_trans_key_type key_type;
156 struct omap_overlay_manager_info info;
157 int r;
158
159 for (key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
160 key_type < ARRAY_SIZE(trans_key_type_str); key_type++) {
161 if (sysfs_streq(buf, trans_key_type_str[key_type]))
162 break;
163 }
164
165 if (key_type == ARRAY_SIZE(trans_key_type_str))
166 return -EINVAL;
167
168 mgr->get_manager_info(mgr, &info);
169
170 info.trans_key_type = key_type;
171
172 r = mgr->set_manager_info(mgr, &info);
173 if (r)
174 return r;
175
176 r = mgr->apply(mgr);
177 if (r)
178 return r;
179
180 return size;
181}
182
183static ssize_t manager_trans_key_value_show(struct omap_overlay_manager *mgr,
184 char *buf)
185{
186 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.trans_key);
187}
188
189static ssize_t manager_trans_key_value_store(struct omap_overlay_manager *mgr,
190 const char *buf, size_t size)
191{
192 struct omap_overlay_manager_info info;
193 u32 key_value;
194 int r;
195
196 if (sscanf(buf, "%d", &key_value) != 1)
197 return -EINVAL;
198
199 mgr->get_manager_info(mgr, &info);
200
201 info.trans_key = key_value;
202
203 r = mgr->set_manager_info(mgr, &info);
204 if (r)
205 return r;
206
207 r = mgr->apply(mgr);
208 if (r)
209 return r;
210
211 return size;
212}
213
214static ssize_t manager_trans_key_enabled_show(struct omap_overlay_manager *mgr,
215 char *buf)
216{
217 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.trans_enabled);
218}
219
220static ssize_t manager_trans_key_enabled_store(struct omap_overlay_manager *mgr,
221 const char *buf, size_t size)
222{
223 struct omap_overlay_manager_info info;
224 int enable;
225 int r;
226
227 if (sscanf(buf, "%d", &enable) != 1)
228 return -EINVAL;
229
230 mgr->get_manager_info(mgr, &info);
231
232 info.trans_enabled = enable ? true : false;
233
234 r = mgr->set_manager_info(mgr, &info);
235 if (r)
236 return r;
237
238 r = mgr->apply(mgr);
239 if (r)
240 return r;
241
242 return size;
243}
244
245static ssize_t manager_alpha_blending_enabled_show(
246 struct omap_overlay_manager *mgr, char *buf)
247{
248 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.alpha_enabled);
249}
250
251static ssize_t manager_alpha_blending_enabled_store(
252 struct omap_overlay_manager *mgr,
253 const char *buf, size_t size)
254{
255 struct omap_overlay_manager_info info;
256 int enable;
257 int r;
258
259 if (sscanf(buf, "%d", &enable) != 1)
260 return -EINVAL;
261
262 mgr->get_manager_info(mgr, &info);
263
264 info.alpha_enabled = enable ? true : false;
265
266 r = mgr->set_manager_info(mgr, &info);
267 if (r)
268 return r;
269
270 r = mgr->apply(mgr);
271 if (r)
272 return r;
273
274 return size;
275}
276
277struct manager_attribute {
278 struct attribute attr;
279 ssize_t (*show)(struct omap_overlay_manager *, char *);
280 ssize_t (*store)(struct omap_overlay_manager *, const char *, size_t);
281};
282
283#define MANAGER_ATTR(_name, _mode, _show, _store) \
284 struct manager_attribute manager_attr_##_name = \
285 __ATTR(_name, _mode, _show, _store)
286
287static MANAGER_ATTR(name, S_IRUGO, manager_name_show, NULL);
288static MANAGER_ATTR(display, S_IRUGO|S_IWUSR,
289 manager_display_show, manager_display_store);
290static MANAGER_ATTR(default_color, S_IRUGO|S_IWUSR,
291 manager_default_color_show, manager_default_color_store);
292static MANAGER_ATTR(trans_key_type, S_IRUGO|S_IWUSR,
293 manager_trans_key_type_show, manager_trans_key_type_store);
294static MANAGER_ATTR(trans_key_value, S_IRUGO|S_IWUSR,
295 manager_trans_key_value_show, manager_trans_key_value_store);
296static MANAGER_ATTR(trans_key_enabled, S_IRUGO|S_IWUSR,
297 manager_trans_key_enabled_show,
298 manager_trans_key_enabled_store);
299static MANAGER_ATTR(alpha_blending_enabled, S_IRUGO|S_IWUSR,
300 manager_alpha_blending_enabled_show,
301 manager_alpha_blending_enabled_store);
302
303
304static struct attribute *manager_sysfs_attrs[] = {
305 &manager_attr_name.attr,
306 &manager_attr_display.attr,
307 &manager_attr_default_color.attr,
308 &manager_attr_trans_key_type.attr,
309 &manager_attr_trans_key_value.attr,
310 &manager_attr_trans_key_enabled.attr,
311 &manager_attr_alpha_blending_enabled.attr,
312 NULL
313};
314
315static ssize_t manager_attr_show(struct kobject *kobj, struct attribute *attr,
316 char *buf)
317{
318 struct omap_overlay_manager *manager;
319 struct manager_attribute *manager_attr;
320
321 manager = container_of(kobj, struct omap_overlay_manager, kobj);
322 manager_attr = container_of(attr, struct manager_attribute, attr);
323
324 if (!manager_attr->show)
325 return -ENOENT;
326
327 return manager_attr->show(manager, buf);
328}
329
330static ssize_t manager_attr_store(struct kobject *kobj, struct attribute *attr,
331 const char *buf, size_t size)
332{
333 struct omap_overlay_manager *manager;
334 struct manager_attribute *manager_attr;
335
336 manager = container_of(kobj, struct omap_overlay_manager, kobj);
337 manager_attr = container_of(attr, struct manager_attribute, attr);
338
339 if (!manager_attr->store)
340 return -ENOENT;
341
342 return manager_attr->store(manager, buf, size);
343}
344
345static const struct sysfs_ops manager_sysfs_ops = {
346 .show = manager_attr_show,
347 .store = manager_attr_store,
348};
349
350static struct kobj_type manager_ktype = {
351 .sysfs_ops = &manager_sysfs_ops,
352 .default_attrs = manager_sysfs_attrs,
353};
354
355/*
356 * We have 4 levels of cache for the dispc settings. First two are in SW and
357 * the latter two in HW.
358 *
359 * +--------------------+
360 * |overlay/manager_info|
361 * +--------------------+
362 * v
363 * apply()
364 * v
365 * +--------------------+
366 * | dss_cache |
367 * +--------------------+
368 * v
369 * configure()
370 * v
371 * +--------------------+
372 * | shadow registers |
373 * +--------------------+
374 * v
375 * VFP or lcd/digit_enable
376 * v
377 * +--------------------+
378 * | registers |
379 * +--------------------+
380 */
381
382struct overlay_cache_data {
383 /* If true, cache changed, but not written to shadow registers. Set
384 * in apply(), cleared when registers written. */
385 bool dirty;
386 /* If true, shadow registers contain changed values not yet in real
387 * registers. Set when writing to shadow registers, cleared at
388 * VSYNC/EVSYNC */
389 bool shadow_dirty;
390
391 bool enabled;
392
393 u32 paddr;
394 void __iomem *vaddr;
395 u16 screen_width;
396 u16 width;
397 u16 height;
398 enum omap_color_mode color_mode;
399 u8 rotation;
400 enum omap_dss_rotation_type rotation_type;
401 bool mirror;
402
403 u16 pos_x;
404 u16 pos_y;
405 u16 out_width; /* if 0, out_width == width */
406 u16 out_height; /* if 0, out_height == height */
407 u8 global_alpha;
408
409 enum omap_channel channel;
410 bool replication;
411 bool ilace;
412
413 enum omap_burst_size burst_size;
414 u32 fifo_low;
415 u32 fifo_high;
416
417 bool manual_update;
418};
419
420struct manager_cache_data {
421 /* If true, cache changed, but not written to shadow registers. Set
422 * in apply(), cleared when registers written. */
423 bool dirty;
424 /* If true, shadow registers contain changed values not yet in real
425 * registers. Set when writing to shadow registers, cleared at
426 * VSYNC/EVSYNC */
427 bool shadow_dirty;
428
429 u32 default_color;
430
431 enum omap_dss_trans_key_type trans_key_type;
432 u32 trans_key;
433 bool trans_enabled;
434
435 bool alpha_enabled;
436
437 bool manual_upd_display;
438 bool manual_update;
439 bool do_manual_update;
440
441 /* manual update region */
442 u16 x, y, w, h;
443};
444
445static struct {
446 spinlock_t lock;
447 struct overlay_cache_data overlay_cache[3];
448 struct manager_cache_data manager_cache[2];
449
450 bool irq_enabled;
451} dss_cache;
452
453
454
455static int omap_dss_set_device(struct omap_overlay_manager *mgr,
456 struct omap_dss_device *dssdev)
457{
458 int i;
459 int r;
460
461 if (dssdev->manager) {
462 DSSERR("display '%s' already has a manager '%s'\n",
463 dssdev->name, dssdev->manager->name);
464 return -EINVAL;
465 }
466
467 if ((mgr->supported_displays & dssdev->type) == 0) {
468 DSSERR("display '%s' does not support manager '%s'\n",
469 dssdev->name, mgr->name);
470 return -EINVAL;
471 }
472
473 for (i = 0; i < mgr->num_overlays; i++) {
474 struct omap_overlay *ovl = mgr->overlays[i];
475
476 if (ovl->manager != mgr || !ovl->info.enabled)
477 continue;
478
479 r = dss_check_overlay(ovl, dssdev);
480 if (r)
481 return r;
482 }
483
484 dssdev->manager = mgr;
485 mgr->device = dssdev;
486 mgr->device_changed = true;
487
488 return 0;
489}
490
491static int omap_dss_unset_device(struct omap_overlay_manager *mgr)
492{
493 if (!mgr->device) {
494 DSSERR("failed to unset display, display not set.\n");
495 return -EINVAL;
496 }
497
498 mgr->device->manager = NULL;
499 mgr->device = NULL;
500 mgr->device_changed = true;
501
502 return 0;
503}
504
505static int dss_mgr_wait_for_vsync(struct omap_overlay_manager *mgr)
506{
507 unsigned long timeout = msecs_to_jiffies(500);
508 u32 irq;
509
510 if (mgr->device->type == OMAP_DISPLAY_TYPE_VENC)
511 irq = DISPC_IRQ_EVSYNC_ODD;
512 else
513 irq = DISPC_IRQ_VSYNC;
514
515 return omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
516}
517
518static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
519{
520 unsigned long timeout = msecs_to_jiffies(500);
521 struct manager_cache_data *mc;
522 enum omap_channel channel;
523 u32 irq;
524 int r;
525 int i;
526 struct omap_dss_device *dssdev = mgr->device;
527
528 if (!dssdev)
529 return 0;
530
531 if (dssdev->type == OMAP_DISPLAY_TYPE_VENC) {
532 irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
533 channel = OMAP_DSS_CHANNEL_DIGIT;
534 } else {
535 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
536 enum omap_dss_update_mode mode;
537 mode = dssdev->driver->get_update_mode(dssdev);
538 if (mode != OMAP_DSS_UPDATE_AUTO)
539 return 0;
540
541 irq = DISPC_IRQ_FRAMEDONE;
542 } else {
543 irq = DISPC_IRQ_VSYNC;
544 }
545 channel = OMAP_DSS_CHANNEL_LCD;
546 }
547
548 mc = &dss_cache.manager_cache[mgr->id];
549 i = 0;
550 while (1) {
551 unsigned long flags;
552 bool shadow_dirty, dirty;
553
554 spin_lock_irqsave(&dss_cache.lock, flags);
555 dirty = mc->dirty;
556 shadow_dirty = mc->shadow_dirty;
557 spin_unlock_irqrestore(&dss_cache.lock, flags);
558
559 if (!dirty && !shadow_dirty) {
560 r = 0;
561 break;
562 }
563
564 /* 4 iterations is the worst case:
565 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
566 * 2 - first VSYNC, dirty = true
567 * 3 - dirty = false, shadow_dirty = true
568 * 4 - shadow_dirty = false */
569 if (i++ == 3) {
570 DSSERR("mgr(%d)->wait_for_go() not finishing\n",
571 mgr->id);
572 r = 0;
573 break;
574 }
575
576 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
577 if (r == -ERESTARTSYS)
578 break;
579
580 if (r) {
581 DSSERR("mgr(%d)->wait_for_go() timeout\n", mgr->id);
582 break;
583 }
584 }
585
586 return r;
587}
588
589int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
590{
591 unsigned long timeout = msecs_to_jiffies(500);
592 enum omap_channel channel;
593 struct overlay_cache_data *oc;
594 struct omap_dss_device *dssdev;
595 u32 irq;
596 int r;
597 int i;
598
599 if (!ovl->manager || !ovl->manager->device)
600 return 0;
601
602 dssdev = ovl->manager->device;
603
604 if (dssdev->type == OMAP_DISPLAY_TYPE_VENC) {
605 irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
606 channel = OMAP_DSS_CHANNEL_DIGIT;
607 } else {
608 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
609 enum omap_dss_update_mode mode;
610 mode = dssdev->driver->get_update_mode(dssdev);
611 if (mode != OMAP_DSS_UPDATE_AUTO)
612 return 0;
613
614 irq = DISPC_IRQ_FRAMEDONE;
615 } else {
616 irq = DISPC_IRQ_VSYNC;
617 }
618 channel = OMAP_DSS_CHANNEL_LCD;
619 }
620
621 oc = &dss_cache.overlay_cache[ovl->id];
622 i = 0;
623 while (1) {
624 unsigned long flags;
625 bool shadow_dirty, dirty;
626
627 spin_lock_irqsave(&dss_cache.lock, flags);
628 dirty = oc->dirty;
629 shadow_dirty = oc->shadow_dirty;
630 spin_unlock_irqrestore(&dss_cache.lock, flags);
631
632 if (!dirty && !shadow_dirty) {
633 r = 0;
634 break;
635 }
636
637 /* 4 iterations is the worst case:
638 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
639 * 2 - first VSYNC, dirty = true
640 * 3 - dirty = false, shadow_dirty = true
641 * 4 - shadow_dirty = false */
642 if (i++ == 3) {
643 DSSERR("ovl(%d)->wait_for_go() not finishing\n",
644 ovl->id);
645 r = 0;
646 break;
647 }
648
649 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
650 if (r == -ERESTARTSYS)
651 break;
652
653 if (r) {
654 DSSERR("ovl(%d)->wait_for_go() timeout\n", ovl->id);
655 break;
656 }
657 }
658
659 return r;
660}
661
662static int overlay_enabled(struct omap_overlay *ovl)
663{
664 return ovl->info.enabled && ovl->manager && ovl->manager->device;
665}
666
667/* Is rect1 a subset of rect2? */
668static bool rectangle_subset(int x1, int y1, int w1, int h1,
669 int x2, int y2, int w2, int h2)
670{
671 if (x1 < x2 || y1 < y2)
672 return false;
673
674 if (x1 + w1 > x2 + w2)
675 return false;
676
677 if (y1 + h1 > y2 + h2)
678 return false;
679
680 return true;
681}
682
683/* Do rect1 and rect2 overlap? */
684static bool rectangle_intersects(int x1, int y1, int w1, int h1,
685 int x2, int y2, int w2, int h2)
686{
687 if (x1 >= x2 + w2)
688 return false;
689
690 if (x2 >= x1 + w1)
691 return false;
692
693 if (y1 >= y2 + h2)
694 return false;
695
696 if (y2 >= y1 + h1)
697 return false;
698
699 return true;
700}
701
702static bool dispc_is_overlay_scaled(struct overlay_cache_data *oc)
703{
704 if (oc->out_width != 0 && oc->width != oc->out_width)
705 return true;
706
707 if (oc->out_height != 0 && oc->height != oc->out_height)
708 return true;
709
710 return false;
711}
712
713static int configure_overlay(enum omap_plane plane)
714{
715 struct overlay_cache_data *c;
716 struct manager_cache_data *mc;
717 u16 outw, outh;
718 u16 x, y, w, h;
719 u32 paddr;
720 int r;
721
722 DSSDBGF("%d", plane);
723
724 c = &dss_cache.overlay_cache[plane];
725
726 if (!c->enabled) {
727 dispc_enable_plane(plane, 0);
728 return 0;
729 }
730
731 mc = &dss_cache.manager_cache[c->channel];
732
733 x = c->pos_x;
734 y = c->pos_y;
735 w = c->width;
736 h = c->height;
737 outw = c->out_width == 0 ? c->width : c->out_width;
738 outh = c->out_height == 0 ? c->height : c->out_height;
739 paddr = c->paddr;
740
741 if (c->manual_update && mc->do_manual_update) {
742 unsigned bpp;
743 /* If the overlay is outside the update region, disable it */
744 if (!rectangle_intersects(mc->x, mc->y, mc->w, mc->h,
745 x, y, outw, outh)) {
746 dispc_enable_plane(plane, 0);
747 return 0;
748 }
749
750 switch (c->color_mode) {
751 case OMAP_DSS_COLOR_RGB16:
752 case OMAP_DSS_COLOR_ARGB16:
753 case OMAP_DSS_COLOR_YUV2:
754 case OMAP_DSS_COLOR_UYVY:
755 bpp = 16;
756 break;
757
758 case OMAP_DSS_COLOR_RGB24P:
759 bpp = 24;
760 break;
761
762 case OMAP_DSS_COLOR_RGB24U:
763 case OMAP_DSS_COLOR_ARGB32:
764 case OMAP_DSS_COLOR_RGBA32:
765 case OMAP_DSS_COLOR_RGBX32:
766 bpp = 32;
767 break;
768
769 default:
770 BUG();
771 }
772
773 if (dispc_is_overlay_scaled(c)) {
774 /* If the overlay is scaled, the update area has
775 * already been enlarged to cover the whole overlay. We
776 * only need to adjust x/y here */
777 x = c->pos_x - mc->x;
778 y = c->pos_y - mc->y;
779 } else {
780 if (mc->x > c->pos_x) {
781 x = 0;
782 w -= (mc->x - c->pos_x);
783 paddr += (mc->x - c->pos_x) * bpp / 8;
784 } else {
785 x = c->pos_x - mc->x;
786 }
787
788 if (mc->y > c->pos_y) {
789 y = 0;
790 h -= (mc->y - c->pos_y);
791 paddr += (mc->y - c->pos_y) * c->screen_width *
792 bpp / 8;
793 } else {
794 y = c->pos_y - mc->y;
795 }
796
797 if (mc->w < (x+w))
798 w -= (x+w) - (mc->w);
799
800 if (mc->h < (y+h))
801 h -= (y+h) - (mc->h);
802
803 outw = w;
804 outh = h;
805 }
806 }
807
808 r = dispc_setup_plane(plane,
809 paddr,
810 c->screen_width,
811 x, y,
812 w, h,
813 outw, outh,
814 c->color_mode,
815 c->ilace,
816 c->rotation_type,
817 c->rotation,
818 c->mirror,
819 c->global_alpha);
820
821 if (r) {
822 /* this shouldn't happen */
823 DSSERR("dispc_setup_plane failed for ovl %d\n", plane);
824 dispc_enable_plane(plane, 0);
825 return r;
826 }
827
828 dispc_enable_replication(plane, c->replication);
829
830 dispc_set_burst_size(plane, c->burst_size);
831 dispc_setup_plane_fifo(plane, c->fifo_low, c->fifo_high);
832
833 dispc_enable_plane(plane, 1);
834
835 return 0;
836}
837
838static void configure_manager(enum omap_channel channel)
839{
840 struct manager_cache_data *c;
841
842 DSSDBGF("%d", channel);
843
844 c = &dss_cache.manager_cache[channel];
845
846 dispc_set_trans_key(channel, c->trans_key_type, c->trans_key);
847 dispc_enable_trans_key(channel, c->trans_enabled);
848 dispc_enable_alpha_blending(channel, c->alpha_enabled);
849}
850
851/* configure_dispc() tries to write values from cache to shadow registers.
852 * It writes only to those managers/overlays that are not busy.
853 * returns 0 if everything could be written to shadow registers.
854 * returns 1 if not everything could be written to shadow registers. */
855static int configure_dispc(void)
856{
857 struct overlay_cache_data *oc;
858 struct manager_cache_data *mc;
859 const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
860 const int num_mgrs = ARRAY_SIZE(dss_cache.manager_cache);
861 int i;
862 int r;
863 bool mgr_busy[2];
864 bool mgr_go[2];
865 bool busy;
866
867 r = 0;
868 busy = false;
869
870 mgr_busy[0] = dispc_go_busy(0);
871 mgr_busy[1] = dispc_go_busy(1);
872 mgr_go[0] = false;
873 mgr_go[1] = false;
874
875 /* Commit overlay settings */
876 for (i = 0; i < num_ovls; ++i) {
877 oc = &dss_cache.overlay_cache[i];
878 mc = &dss_cache.manager_cache[oc->channel];
879
880 if (!oc->dirty)
881 continue;
882
883 if (oc->manual_update && !mc->do_manual_update)
884 continue;
885
886 if (mgr_busy[oc->channel]) {
887 busy = true;
888 continue;
889 }
890
891 r = configure_overlay(i);
892 if (r)
893 DSSERR("configure_overlay %d failed\n", i);
894
895 oc->dirty = false;
896 oc->shadow_dirty = true;
897 mgr_go[oc->channel] = true;
898 }
899
900 /* Commit manager settings */
901 for (i = 0; i < num_mgrs; ++i) {
902 mc = &dss_cache.manager_cache[i];
903
904 if (!mc->dirty)
905 continue;
906
907 if (mc->manual_update && !mc->do_manual_update)
908 continue;
909
910 if (mgr_busy[i]) {
911 busy = true;
912 continue;
913 }
914
915 configure_manager(i);
916 mc->dirty = false;
917 mc->shadow_dirty = true;
918 mgr_go[i] = true;
919 }
920
921 /* set GO */
922 for (i = 0; i < num_mgrs; ++i) {
923 mc = &dss_cache.manager_cache[i];
924
925 if (!mgr_go[i])
926 continue;
927
928 /* We don't need GO with manual update display. LCD iface will
929 * always be turned off after frame, and new settings will be
930 * taken in to use at next update */
931 if (!mc->manual_upd_display)
932 dispc_go(i);
933 }
934
935 if (busy)
936 r = 1;
937 else
938 r = 0;
939
940 return r;
941}
942
943/* Configure dispc for partial update. Return possibly modified update
944 * area */
945void dss_setup_partial_planes(struct omap_dss_device *dssdev,
946 u16 *xi, u16 *yi, u16 *wi, u16 *hi)
947{
948 struct overlay_cache_data *oc;
949 struct manager_cache_data *mc;
950 const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
951 struct omap_overlay_manager *mgr;
952 int i;
953 u16 x, y, w, h;
954 unsigned long flags;
955
956 x = *xi;
957 y = *yi;
958 w = *wi;
959 h = *hi;
960
961 DSSDBG("dispc_setup_partial_planes %d,%d %dx%d\n",
962 *xi, *yi, *wi, *hi);
963
964 mgr = dssdev->manager;
965
966 if (!mgr) {
967 DSSDBG("no manager\n");
968 return;
969 }
970
971 spin_lock_irqsave(&dss_cache.lock, flags);
972
973 /* We need to show the whole overlay if it is scaled. So look for
974 * those, and make the update area larger if found.
975 * Also mark the overlay cache dirty */
976 for (i = 0; i < num_ovls; ++i) {
977 unsigned x1, y1, x2, y2;
978 unsigned outw, outh;
979
980 oc = &dss_cache.overlay_cache[i];
981
982 if (oc->channel != mgr->id)
983 continue;
984
985 oc->dirty = true;
986
987 if (!oc->enabled)
988 continue;
989
990 if (!dispc_is_overlay_scaled(oc))
991 continue;
992
993 outw = oc->out_width == 0 ? oc->width : oc->out_width;
994 outh = oc->out_height == 0 ? oc->height : oc->out_height;
995
996 /* is the overlay outside the update region? */
997 if (!rectangle_intersects(x, y, w, h,
998 oc->pos_x, oc->pos_y,
999 outw, outh))
1000 continue;
1001
1002 /* if the overlay totally inside the update region? */
1003 if (rectangle_subset(oc->pos_x, oc->pos_y, outw, outh,
1004 x, y, w, h))
1005 continue;
1006
1007 if (x > oc->pos_x)
1008 x1 = oc->pos_x;
1009 else
1010 x1 = x;
1011
1012 if (y > oc->pos_y)
1013 y1 = oc->pos_y;
1014 else
1015 y1 = y;
1016
1017 if ((x + w) < (oc->pos_x + outw))
1018 x2 = oc->pos_x + outw;
1019 else
1020 x2 = x + w;
1021
1022 if ((y + h) < (oc->pos_y + outh))
1023 y2 = oc->pos_y + outh;
1024 else
1025 y2 = y + h;
1026
1027 x = x1;
1028 y = y1;
1029 w = x2 - x1;
1030 h = y2 - y1;
1031
1032 DSSDBG("changing upd area due to ovl(%d) scaling %d,%d %dx%d\n",
1033 i, x, y, w, h);
1034 }
1035
1036 mc = &dss_cache.manager_cache[mgr->id];
1037 mc->do_manual_update = true;
1038 mc->x = x;
1039 mc->y = y;
1040 mc->w = w;
1041 mc->h = h;
1042
1043 configure_dispc();
1044
1045 mc->do_manual_update = false;
1046
1047 spin_unlock_irqrestore(&dss_cache.lock, flags);
1048
1049 *xi = x;
1050 *yi = y;
1051 *wi = w;
1052 *hi = h;
1053}
1054
1055void dss_start_update(struct omap_dss_device *dssdev)
1056{
1057 struct manager_cache_data *mc;
1058 struct overlay_cache_data *oc;
1059 const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
1060 const int num_mgrs = ARRAY_SIZE(dss_cache.manager_cache);
1061 struct omap_overlay_manager *mgr;
1062 int i;
1063
1064 mgr = dssdev->manager;
1065
1066 for (i = 0; i < num_ovls; ++i) {
1067 oc = &dss_cache.overlay_cache[i];
1068 if (oc->channel != mgr->id)
1069 continue;
1070
1071 oc->shadow_dirty = false;
1072 }
1073
1074 for (i = 0; i < num_mgrs; ++i) {
1075 mc = &dss_cache.manager_cache[i];
1076 if (mgr->id != i)
1077 continue;
1078
1079 mc->shadow_dirty = false;
1080 }
1081
1082 dssdev->manager->enable(dssdev->manager);
1083}
1084
1085static void dss_apply_irq_handler(void *data, u32 mask)
1086{
1087 struct manager_cache_data *mc;
1088 struct overlay_cache_data *oc;
1089 const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
1090 const int num_mgrs = ARRAY_SIZE(dss_cache.manager_cache);
1091 int i, r;
1092 bool mgr_busy[2];
1093
1094 mgr_busy[0] = dispc_go_busy(0);
1095 mgr_busy[1] = dispc_go_busy(1);
1096
1097 spin_lock(&dss_cache.lock);
1098
1099 for (i = 0; i < num_ovls; ++i) {
1100 oc = &dss_cache.overlay_cache[i];
1101 if (!mgr_busy[oc->channel])
1102 oc->shadow_dirty = false;
1103 }
1104
1105 for (i = 0; i < num_mgrs; ++i) {
1106 mc = &dss_cache.manager_cache[i];
1107 if (!mgr_busy[i])
1108 mc->shadow_dirty = false;
1109 }
1110
1111 r = configure_dispc();
1112 if (r == 1)
1113 goto end;
1114
1115 /* re-read busy flags */
1116 mgr_busy[0] = dispc_go_busy(0);
1117 mgr_busy[1] = dispc_go_busy(1);
1118
1119 /* keep running as long as there are busy managers, so that
1120 * we can collect overlay-applied information */
1121 for (i = 0; i < num_mgrs; ++i) {
1122 if (mgr_busy[i])
1123 goto end;
1124 }
1125
1126 omap_dispc_unregister_isr(dss_apply_irq_handler, NULL,
1127 DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
1128 DISPC_IRQ_EVSYNC_EVEN);
1129 dss_cache.irq_enabled = false;
1130
1131end:
1132 spin_unlock(&dss_cache.lock);
1133}
1134
1135static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
1136{
1137 struct overlay_cache_data *oc;
1138 struct manager_cache_data *mc;
1139 int i;
1140 struct omap_overlay *ovl;
1141 int num_planes_enabled = 0;
1142 bool use_fifomerge;
1143 unsigned long flags;
1144 int r;
1145
1146 DSSDBG("omap_dss_mgr_apply(%s)\n", mgr->name);
1147
1148 spin_lock_irqsave(&dss_cache.lock, flags);
1149
1150 /* Configure overlays */
1151 for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
1152 struct omap_dss_device *dssdev;
1153
1154 ovl = omap_dss_get_overlay(i);
1155
1156 if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
1157 continue;
1158
1159 oc = &dss_cache.overlay_cache[ovl->id];
1160
1161 if (!overlay_enabled(ovl)) {
1162 if (oc->enabled) {
1163 oc->enabled = false;
1164 oc->dirty = true;
1165 }
1166 continue;
1167 }
1168
1169 if (!ovl->info_dirty) {
1170 if (oc->enabled)
1171 ++num_planes_enabled;
1172 continue;
1173 }
1174
1175 dssdev = ovl->manager->device;
1176
1177 if (dss_check_overlay(ovl, dssdev)) {
1178 if (oc->enabled) {
1179 oc->enabled = false;
1180 oc->dirty = true;
1181 }
1182 continue;
1183 }
1184
1185 ovl->info_dirty = false;
1186 oc->dirty = true;
1187
1188 oc->paddr = ovl->info.paddr;
1189 oc->vaddr = ovl->info.vaddr;
1190 oc->screen_width = ovl->info.screen_width;
1191 oc->width = ovl->info.width;
1192 oc->height = ovl->info.height;
1193 oc->color_mode = ovl->info.color_mode;
1194 oc->rotation = ovl->info.rotation;
1195 oc->rotation_type = ovl->info.rotation_type;
1196 oc->mirror = ovl->info.mirror;
1197 oc->pos_x = ovl->info.pos_x;
1198 oc->pos_y = ovl->info.pos_y;
1199 oc->out_width = ovl->info.out_width;
1200 oc->out_height = ovl->info.out_height;
1201 oc->global_alpha = ovl->info.global_alpha;
1202
1203 oc->replication =
1204 dss_use_replication(dssdev, ovl->info.color_mode);
1205
1206 oc->ilace = dssdev->type == OMAP_DISPLAY_TYPE_VENC;
1207
1208 oc->channel = ovl->manager->id;
1209
1210 oc->enabled = true;
1211
1212 oc->manual_update =
1213 dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE &&
1214 dssdev->driver->get_update_mode(dssdev) !=
1215 OMAP_DSS_UPDATE_AUTO;
1216
1217 ++num_planes_enabled;
1218 }
1219
1220 /* Configure managers */
1221 list_for_each_entry(mgr, &manager_list, list) {
1222 struct omap_dss_device *dssdev;
1223
1224 if (!(mgr->caps & OMAP_DSS_OVL_MGR_CAP_DISPC))
1225 continue;
1226
1227 mc = &dss_cache.manager_cache[mgr->id];
1228
1229 if (mgr->device_changed) {
1230 mgr->device_changed = false;
1231 mgr->info_dirty = true;
1232 }
1233
1234 if (!mgr->info_dirty)
1235 continue;
1236
1237 if (!mgr->device)
1238 continue;
1239
1240 dssdev = mgr->device;
1241
1242 mgr->info_dirty = false;
1243 mc->dirty = true;
1244
1245 mc->default_color = mgr->info.default_color;
1246 mc->trans_key_type = mgr->info.trans_key_type;
1247 mc->trans_key = mgr->info.trans_key;
1248 mc->trans_enabled = mgr->info.trans_enabled;
1249 mc->alpha_enabled = mgr->info.alpha_enabled;
1250
1251 mc->manual_upd_display =
1252 dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
1253
1254 mc->manual_update =
1255 dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE &&
1256 dssdev->driver->get_update_mode(dssdev) !=
1257 OMAP_DSS_UPDATE_AUTO;
1258 }
1259
1260 /* XXX TODO: Try to get fifomerge working. The problem is that it
1261 * affects both managers, not individually but at the same time. This
1262 * means the change has to be well synchronized. I guess the proper way
1263 * is to have a two step process for fifo merge:
1264 * fifomerge enable:
1265 * 1. disable other planes, leaving one plane enabled
1266 * 2. wait until the planes are disabled on HW
1267 * 3. config merged fifo thresholds, enable fifomerge
1268 * fifomerge disable:
1269 * 1. config unmerged fifo thresholds, disable fifomerge
1270 * 2. wait until fifo changes are in HW
1271 * 3. enable planes
1272 */
1273 use_fifomerge = false;
1274
1275 /* Configure overlay fifos */
1276 for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
1277 struct omap_dss_device *dssdev;
1278 u32 size;
1279
1280 ovl = omap_dss_get_overlay(i);
1281
1282 if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
1283 continue;
1284
1285 oc = &dss_cache.overlay_cache[ovl->id];
1286
1287 if (!oc->enabled)
1288 continue;
1289
1290 dssdev = ovl->manager->device;
1291
1292 size = dispc_get_plane_fifo_size(ovl->id);
1293 if (use_fifomerge)
1294 size *= 3;
1295
1296 switch (dssdev->type) {
1297 case OMAP_DISPLAY_TYPE_DPI:
1298 case OMAP_DISPLAY_TYPE_DBI:
1299 case OMAP_DISPLAY_TYPE_SDI:
1300 case OMAP_DISPLAY_TYPE_VENC:
1301 default_get_overlay_fifo_thresholds(ovl->id, size,
1302 &oc->burst_size, &oc->fifo_low,
1303 &oc->fifo_high);
1304 break;
1305#ifdef CONFIG_OMAP2_DSS_DSI
1306 case OMAP_DISPLAY_TYPE_DSI:
1307 dsi_get_overlay_fifo_thresholds(ovl->id, size,
1308 &oc->burst_size, &oc->fifo_low,
1309 &oc->fifo_high);
1310 break;
1311#endif
1312 default:
1313 BUG();
1314 }
1315 }
1316
1317 r = 0;
1318 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
1319 if (!dss_cache.irq_enabled) {
1320 r = omap_dispc_register_isr(dss_apply_irq_handler, NULL,
1321 DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
1322 DISPC_IRQ_EVSYNC_EVEN);
1323 dss_cache.irq_enabled = true;
1324 }
1325 configure_dispc();
1326 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
1327
1328 spin_unlock_irqrestore(&dss_cache.lock, flags);
1329
1330 return r;
1331}
1332
1333static int dss_check_manager(struct omap_overlay_manager *mgr)
1334{
1335 /* OMAP supports only graphics source transparency color key and alpha
1336 * blending simultaneously. See TRM 15.4.2.4.2.2 Alpha Mode */
1337
1338 if (mgr->info.alpha_enabled && mgr->info.trans_enabled &&
1339 mgr->info.trans_key_type != OMAP_DSS_COLOR_KEY_GFX_DST)
1340 return -EINVAL;
1341
1342 return 0;
1343}
1344
1345static int omap_dss_mgr_set_info(struct omap_overlay_manager *mgr,
1346 struct omap_overlay_manager_info *info)
1347{
1348 int r;
1349 struct omap_overlay_manager_info old_info;
1350
1351 old_info = mgr->info;
1352 mgr->info = *info;
1353
1354 r = dss_check_manager(mgr);
1355 if (r) {
1356 mgr->info = old_info;
1357 return r;
1358 }
1359
1360 mgr->info_dirty = true;
1361
1362 return 0;
1363}
1364
1365static void omap_dss_mgr_get_info(struct omap_overlay_manager *mgr,
1366 struct omap_overlay_manager_info *info)
1367{
1368 *info = mgr->info;
1369}
1370
1371static int dss_mgr_enable(struct omap_overlay_manager *mgr)
1372{
1373 dispc_enable_channel(mgr->id, 1);
1374 return 0;
1375}
1376
1377static int dss_mgr_disable(struct omap_overlay_manager *mgr)
1378{
1379 dispc_enable_channel(mgr->id, 0);
1380 return 0;
1381}
1382
1383static void omap_dss_add_overlay_manager(struct omap_overlay_manager *manager)
1384{
1385 ++num_managers;
1386 list_add_tail(&manager->list, &manager_list);
1387}
1388
1389int dss_init_overlay_managers(struct platform_device *pdev)
1390{
1391 int i, r;
1392
1393 spin_lock_init(&dss_cache.lock);
1394
1395 INIT_LIST_HEAD(&manager_list);
1396
1397 num_managers = 0;
1398
1399 for (i = 0; i < 2; ++i) {
1400 struct omap_overlay_manager *mgr;
1401 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1402
1403 BUG_ON(mgr == NULL);
1404
1405 switch (i) {
1406 case 0:
1407 mgr->name = "lcd";
1408 mgr->id = OMAP_DSS_CHANNEL_LCD;
1409 mgr->supported_displays =
1410 OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI |
1411 OMAP_DISPLAY_TYPE_SDI | OMAP_DISPLAY_TYPE_DSI;
1412 break;
1413 case 1:
1414 mgr->name = "tv";
1415 mgr->id = OMAP_DSS_CHANNEL_DIGIT;
1416 mgr->supported_displays = OMAP_DISPLAY_TYPE_VENC;
1417 break;
1418 }
1419
1420 mgr->set_device = &omap_dss_set_device;
1421 mgr->unset_device = &omap_dss_unset_device;
1422 mgr->apply = &omap_dss_mgr_apply;
1423 mgr->set_manager_info = &omap_dss_mgr_set_info;
1424 mgr->get_manager_info = &omap_dss_mgr_get_info;
1425 mgr->wait_for_go = &dss_mgr_wait_for_go;
1426 mgr->wait_for_vsync = &dss_mgr_wait_for_vsync;
1427
1428 mgr->enable = &dss_mgr_enable;
1429 mgr->disable = &dss_mgr_disable;
1430
1431 mgr->caps = OMAP_DSS_OVL_MGR_CAP_DISPC;
1432
1433 dss_overlay_setup_dispc_manager(mgr);
1434
1435 omap_dss_add_overlay_manager(mgr);
1436
1437 r = kobject_init_and_add(&mgr->kobj, &manager_ktype,
1438 &pdev->dev.kobj, "manager%d", i);
1439
1440 if (r) {
1441 DSSERR("failed to create sysfs file\n");
1442 continue;
1443 }
1444 }
1445
1446#ifdef L4_EXAMPLE
1447 {
1448 int omap_dss_mgr_apply_l4(struct omap_overlay_manager *mgr)
1449 {
1450 DSSDBG("omap_dss_mgr_apply_l4(%s)\n", mgr->name);
1451
1452 return 0;
1453 }
1454
1455 struct omap_overlay_manager *mgr;
1456 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1457
1458 BUG_ON(mgr == NULL);
1459
1460 mgr->name = "l4";
1461 mgr->supported_displays =
1462 OMAP_DISPLAY_TYPE_DBI | OMAP_DISPLAY_TYPE_DSI;
1463
1464 mgr->set_device = &omap_dss_set_device;
1465 mgr->unset_device = &omap_dss_unset_device;
1466 mgr->apply = &omap_dss_mgr_apply_l4;
1467 mgr->set_manager_info = &omap_dss_mgr_set_info;
1468 mgr->get_manager_info = &omap_dss_mgr_get_info;
1469
1470 dss_overlay_setup_l4_manager(mgr);
1471
1472 omap_dss_add_overlay_manager(mgr);
1473
1474 r = kobject_init_and_add(&mgr->kobj, &manager_ktype,
1475 &pdev->dev.kobj, "managerl4");
1476
1477 if (r)
1478 DSSERR("failed to create sysfs file\n");
1479 }
1480#endif
1481
1482 return 0;
1483}
1484
1485void dss_uninit_overlay_managers(struct platform_device *pdev)
1486{
1487 struct omap_overlay_manager *mgr;
1488
1489 while (!list_empty(&manager_list)) {
1490 mgr = list_first_entry(&manager_list,
1491 struct omap_overlay_manager, list);
1492 list_del(&mgr->list);
1493 kobject_del(&mgr->kobj);
1494 kobject_put(&mgr->kobj);
1495 kfree(mgr);
1496 }
1497
1498 num_managers = 0;
1499}
1500
1501int omap_dss_get_num_overlay_managers(void)
1502{
1503 return num_managers;
1504}
1505EXPORT_SYMBOL(omap_dss_get_num_overlay_managers);
1506
1507struct omap_overlay_manager *omap_dss_get_overlay_manager(int num)
1508{
1509 int i = 0;
1510 struct omap_overlay_manager *mgr;
1511
1512 list_for_each_entry(mgr, &manager_list, list) {
1513 if (i++ == num)
1514 return mgr;
1515 }
1516
1517 return NULL;
1518}
1519EXPORT_SYMBOL(omap_dss_get_overlay_manager);
1520
generated by cgit v1.2.2 (git 2.25.0) at 2025-07-20 21:50:14 -0400