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-rw-r--r--drivers/video/omap2/dss/display.c671
-rw-r--r--drivers/video/omap2/dss/manager.c1487
-rw-r--r--drivers/video/omap2/dss/overlay.c680
3 files changed, 2838 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/display.c b/drivers/video/omap2/dss/display.c
new file mode 100644
index 000000000000..3b92b84b9560
--- /dev/null
+++ b/drivers/video/omap2/dss/display.c
@@ -0,0 +1,671 @@
1/*
2 * linux/drivers/video/omap2/dss/display.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 "DISPLAY"
24
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/jiffies.h>
28#include <linux/list.h>
29#include <linux/platform_device.h>
30
31#include <plat/display.h>
32#include "dss.h"
33
34static LIST_HEAD(display_list);
35
36static ssize_t display_enabled_show(struct device *dev,
37 struct device_attribute *attr, char *buf)
38{
39 struct omap_dss_device *dssdev = to_dss_device(dev);
40 bool enabled = dssdev->state != OMAP_DSS_DISPLAY_DISABLED;
41
42 return snprintf(buf, PAGE_SIZE, "%d\n", enabled);
43}
44
45static ssize_t display_enabled_store(struct device *dev,
46 struct device_attribute *attr,
47 const char *buf, size_t size)
48{
49 struct omap_dss_device *dssdev = to_dss_device(dev);
50 bool enabled, r;
51
52 enabled = simple_strtoul(buf, NULL, 10);
53
54 if (enabled != (dssdev->state != OMAP_DSS_DISPLAY_DISABLED)) {
55 if (enabled) {
56 r = dssdev->enable(dssdev);
57 if (r)
58 return r;
59 } else {
60 dssdev->disable(dssdev);
61 }
62 }
63
64 return size;
65}
66
67static ssize_t display_upd_mode_show(struct device *dev,
68 struct device_attribute *attr, char *buf)
69{
70 struct omap_dss_device *dssdev = to_dss_device(dev);
71 enum omap_dss_update_mode mode = OMAP_DSS_UPDATE_AUTO;
72 if (dssdev->get_update_mode)
73 mode = dssdev->get_update_mode(dssdev);
74 return snprintf(buf, PAGE_SIZE, "%d\n", mode);
75}
76
77static ssize_t display_upd_mode_store(struct device *dev,
78 struct device_attribute *attr,
79 const char *buf, size_t size)
80{
81 struct omap_dss_device *dssdev = to_dss_device(dev);
82 int val, r;
83 enum omap_dss_update_mode mode;
84
85 val = simple_strtoul(buf, NULL, 10);
86
87 switch (val) {
88 case OMAP_DSS_UPDATE_DISABLED:
89 case OMAP_DSS_UPDATE_AUTO:
90 case OMAP_DSS_UPDATE_MANUAL:
91 mode = (enum omap_dss_update_mode)val;
92 break;
93 default:
94 return -EINVAL;
95 }
96
97 r = dssdev->set_update_mode(dssdev, mode);
98 if (r)
99 return r;
100
101 return size;
102}
103
104static ssize_t display_tear_show(struct device *dev,
105 struct device_attribute *attr, char *buf)
106{
107 struct omap_dss_device *dssdev = to_dss_device(dev);
108 return snprintf(buf, PAGE_SIZE, "%d\n",
109 dssdev->get_te ? dssdev->get_te(dssdev) : 0);
110}
111
112static ssize_t display_tear_store(struct device *dev,
113 struct device_attribute *attr, const char *buf, size_t size)
114{
115 struct omap_dss_device *dssdev = to_dss_device(dev);
116 unsigned long te;
117 int r;
118
119 if (!dssdev->enable_te || !dssdev->get_te)
120 return -ENOENT;
121
122 te = simple_strtoul(buf, NULL, 0);
123
124 r = dssdev->enable_te(dssdev, te);
125 if (r)
126 return r;
127
128 return size;
129}
130
131static ssize_t display_timings_show(struct device *dev,
132 struct device_attribute *attr, char *buf)
133{
134 struct omap_dss_device *dssdev = to_dss_device(dev);
135 struct omap_video_timings t;
136
137 if (!dssdev->get_timings)
138 return -ENOENT;
139
140 dssdev->get_timings(dssdev, &t);
141
142 return snprintf(buf, PAGE_SIZE, "%u,%u/%u/%u/%u,%u/%u/%u/%u\n",
143 t.pixel_clock,
144 t.x_res, t.hfp, t.hbp, t.hsw,
145 t.y_res, t.vfp, t.vbp, t.vsw);
146}
147
148static ssize_t display_timings_store(struct device *dev,
149 struct device_attribute *attr, const char *buf, size_t size)
150{
151 struct omap_dss_device *dssdev = to_dss_device(dev);
152 struct omap_video_timings t;
153 int r, found;
154
155 if (!dssdev->set_timings || !dssdev->check_timings)
156 return -ENOENT;
157
158 found = 0;
159#ifdef CONFIG_OMAP2_DSS_VENC
160 if (strncmp("pal", buf, 3) == 0) {
161 t = omap_dss_pal_timings;
162 found = 1;
163 } else if (strncmp("ntsc", buf, 4) == 0) {
164 t = omap_dss_ntsc_timings;
165 found = 1;
166 }
167#endif
168 if (!found && sscanf(buf, "%u,%hu/%hu/%hu/%hu,%hu/%hu/%hu/%hu",
169 &t.pixel_clock,
170 &t.x_res, &t.hfp, &t.hbp, &t.hsw,
171 &t.y_res, &t.vfp, &t.vbp, &t.vsw) != 9)
172 return -EINVAL;
173
174 r = dssdev->check_timings(dssdev, &t);
175 if (r)
176 return r;
177
178 dssdev->set_timings(dssdev, &t);
179
180 return size;
181}
182
183static ssize_t display_rotate_show(struct device *dev,
184 struct device_attribute *attr, char *buf)
185{
186 struct omap_dss_device *dssdev = to_dss_device(dev);
187 int rotate;
188 if (!dssdev->get_rotate)
189 return -ENOENT;
190 rotate = dssdev->get_rotate(dssdev);
191 return snprintf(buf, PAGE_SIZE, "%u\n", rotate);
192}
193
194static ssize_t display_rotate_store(struct device *dev,
195 struct device_attribute *attr, const char *buf, size_t size)
196{
197 struct omap_dss_device *dssdev = to_dss_device(dev);
198 unsigned long rot;
199 int r;
200
201 if (!dssdev->set_rotate || !dssdev->get_rotate)
202 return -ENOENT;
203
204 rot = simple_strtoul(buf, NULL, 0);
205
206 r = dssdev->set_rotate(dssdev, rot);
207 if (r)
208 return r;
209
210 return size;
211}
212
213static ssize_t display_mirror_show(struct device *dev,
214 struct device_attribute *attr, char *buf)
215{
216 struct omap_dss_device *dssdev = to_dss_device(dev);
217 int mirror;
218 if (!dssdev->get_mirror)
219 return -ENOENT;
220 mirror = dssdev->get_mirror(dssdev);
221 return snprintf(buf, PAGE_SIZE, "%u\n", mirror);
222}
223
224static ssize_t display_mirror_store(struct device *dev,
225 struct device_attribute *attr, const char *buf, size_t size)
226{
227 struct omap_dss_device *dssdev = to_dss_device(dev);
228 unsigned long mirror;
229 int r;
230
231 if (!dssdev->set_mirror || !dssdev->get_mirror)
232 return -ENOENT;
233
234 mirror = simple_strtoul(buf, NULL, 0);
235
236 r = dssdev->set_mirror(dssdev, mirror);
237 if (r)
238 return r;
239
240 return size;
241}
242
243static ssize_t display_wss_show(struct device *dev,
244 struct device_attribute *attr, char *buf)
245{
246 struct omap_dss_device *dssdev = to_dss_device(dev);
247 unsigned int wss;
248
249 if (!dssdev->get_wss)
250 return -ENOENT;
251
252 wss = dssdev->get_wss(dssdev);
253
254 return snprintf(buf, PAGE_SIZE, "0x%05x\n", wss);
255}
256
257static ssize_t display_wss_store(struct device *dev,
258 struct device_attribute *attr, const char *buf, size_t size)
259{
260 struct omap_dss_device *dssdev = to_dss_device(dev);
261 unsigned long wss;
262 int r;
263
264 if (!dssdev->get_wss || !dssdev->set_wss)
265 return -ENOENT;
266
267 if (strict_strtoul(buf, 0, &wss))
268 return -EINVAL;
269
270 if (wss > 0xfffff)
271 return -EINVAL;
272
273 r = dssdev->set_wss(dssdev, wss);
274 if (r)
275 return r;
276
277 return size;
278}
279
280static DEVICE_ATTR(enabled, S_IRUGO|S_IWUSR,
281 display_enabled_show, display_enabled_store);
282static DEVICE_ATTR(update_mode, S_IRUGO|S_IWUSR,
283 display_upd_mode_show, display_upd_mode_store);
284static DEVICE_ATTR(tear_elim, S_IRUGO|S_IWUSR,
285 display_tear_show, display_tear_store);
286static DEVICE_ATTR(timings, S_IRUGO|S_IWUSR,
287 display_timings_show, display_timings_store);
288static DEVICE_ATTR(rotate, S_IRUGO|S_IWUSR,
289 display_rotate_show, display_rotate_store);
290static DEVICE_ATTR(mirror, S_IRUGO|S_IWUSR,
291 display_mirror_show, display_mirror_store);
292static DEVICE_ATTR(wss, S_IRUGO|S_IWUSR,
293 display_wss_show, display_wss_store);
294
295static struct device_attribute *display_sysfs_attrs[] = {
296 &dev_attr_enabled,
297 &dev_attr_update_mode,
298 &dev_attr_tear_elim,
299 &dev_attr_timings,
300 &dev_attr_rotate,
301 &dev_attr_mirror,
302 &dev_attr_wss,
303 NULL
304};
305
306static void default_get_resolution(struct omap_dss_device *dssdev,
307 u16 *xres, u16 *yres)
308{
309 *xres = dssdev->panel.timings.x_res;
310 *yres = dssdev->panel.timings.y_res;
311}
312
313void default_get_overlay_fifo_thresholds(enum omap_plane plane,
314 u32 fifo_size, enum omap_burst_size *burst_size,
315 u32 *fifo_low, u32 *fifo_high)
316{
317 unsigned burst_size_bytes;
318
319 *burst_size = OMAP_DSS_BURST_16x32;
320 burst_size_bytes = 16 * 32 / 8;
321
322 *fifo_high = fifo_size - 1;
323 *fifo_low = fifo_size - burst_size_bytes;
324}
325
326static int default_wait_vsync(struct omap_dss_device *dssdev)
327{
328 unsigned long timeout = msecs_to_jiffies(500);
329 u32 irq;
330
331 if (dssdev->type == OMAP_DISPLAY_TYPE_VENC)
332 irq = DISPC_IRQ_EVSYNC_ODD;
333 else
334 irq = DISPC_IRQ_VSYNC;
335
336 return omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
337}
338
339static int default_get_recommended_bpp(struct omap_dss_device *dssdev)
340{
341 if (dssdev->panel.recommended_bpp)
342 return dssdev->panel.recommended_bpp;
343
344 switch (dssdev->type) {
345 case OMAP_DISPLAY_TYPE_DPI:
346 if (dssdev->phy.dpi.data_lines == 24)
347 return 24;
348 else
349 return 16;
350
351 case OMAP_DISPLAY_TYPE_DBI:
352 case OMAP_DISPLAY_TYPE_DSI:
353 if (dssdev->ctrl.pixel_size == 24)
354 return 24;
355 else
356 return 16;
357 case OMAP_DISPLAY_TYPE_VENC:
358 case OMAP_DISPLAY_TYPE_SDI:
359 return 24;
360 return 24;
361 default:
362 BUG();
363 }
364}
365
366/* Checks if replication logic should be used. Only use for active matrix,
367 * when overlay is in RGB12U or RGB16 mode, and LCD interface is
368 * 18bpp or 24bpp */
369bool dss_use_replication(struct omap_dss_device *dssdev,
370 enum omap_color_mode mode)
371{
372 int bpp;
373
374 if (mode != OMAP_DSS_COLOR_RGB12U && mode != OMAP_DSS_COLOR_RGB16)
375 return false;
376
377 if (dssdev->type == OMAP_DISPLAY_TYPE_DPI &&
378 (dssdev->panel.config & OMAP_DSS_LCD_TFT) == 0)
379 return false;
380
381 switch (dssdev->type) {
382 case OMAP_DISPLAY_TYPE_DPI:
383 bpp = dssdev->phy.dpi.data_lines;
384 break;
385 case OMAP_DISPLAY_TYPE_VENC:
386 case OMAP_DISPLAY_TYPE_SDI:
387 bpp = 24;
388 break;
389 case OMAP_DISPLAY_TYPE_DBI:
390 case OMAP_DISPLAY_TYPE_DSI:
391 bpp = dssdev->ctrl.pixel_size;
392 break;
393 default:
394 BUG();
395 }
396
397 return bpp > 16;
398}
399
400void dss_init_device(struct platform_device *pdev,
401 struct omap_dss_device *dssdev)
402{
403 struct device_attribute *attr;
404 int i;
405 int r;
406
407 switch (dssdev->type) {
408 case OMAP_DISPLAY_TYPE_DPI:
409#ifdef CONFIG_OMAP2_DSS_RFBI
410 case OMAP_DISPLAY_TYPE_DBI:
411#endif
412#ifdef CONFIG_OMAP2_DSS_SDI
413 case OMAP_DISPLAY_TYPE_SDI:
414#endif
415#ifdef CONFIG_OMAP2_DSS_DSI
416 case OMAP_DISPLAY_TYPE_DSI:
417#endif
418#ifdef CONFIG_OMAP2_DSS_VENC
419 case OMAP_DISPLAY_TYPE_VENC:
420#endif
421 break;
422 default:
423 DSSERR("Support for display '%s' not compiled in.\n",
424 dssdev->name);
425 return;
426 }
427
428 dssdev->get_resolution = default_get_resolution;
429 dssdev->get_recommended_bpp = default_get_recommended_bpp;
430 dssdev->wait_vsync = default_wait_vsync;
431
432 switch (dssdev->type) {
433 case OMAP_DISPLAY_TYPE_DPI:
434 r = dpi_init_display(dssdev);
435 break;
436#ifdef CONFIG_OMAP2_DSS_RFBI
437 case OMAP_DISPLAY_TYPE_DBI:
438 r = rfbi_init_display(dssdev);
439 break;
440#endif
441#ifdef CONFIG_OMAP2_DSS_VENC
442 case OMAP_DISPLAY_TYPE_VENC:
443 r = venc_init_display(dssdev);
444 break;
445#endif
446#ifdef CONFIG_OMAP2_DSS_SDI
447 case OMAP_DISPLAY_TYPE_SDI:
448 r = sdi_init_display(dssdev);
449 break;
450#endif
451#ifdef CONFIG_OMAP2_DSS_DSI
452 case OMAP_DISPLAY_TYPE_DSI:
453 r = dsi_init_display(dssdev);
454 break;
455#endif
456 default:
457 BUG();
458 }
459
460 if (r) {
461 DSSERR("failed to init display %s\n", dssdev->name);
462 return;
463 }
464
465 /* create device sysfs files */
466 i = 0;
467 while ((attr = display_sysfs_attrs[i++]) != NULL) {
468 r = device_create_file(&dssdev->dev, attr);
469 if (r)
470 DSSERR("failed to create sysfs file\n");
471 }
472
473 /* create display? sysfs links */
474 r = sysfs_create_link(&pdev->dev.kobj, &dssdev->dev.kobj,
475 dev_name(&dssdev->dev));
476 if (r)
477 DSSERR("failed to create sysfs display link\n");
478}
479
480void dss_uninit_device(struct platform_device *pdev,
481 struct omap_dss_device *dssdev)
482{
483 struct device_attribute *attr;
484 int i = 0;
485
486 sysfs_remove_link(&pdev->dev.kobj, dev_name(&dssdev->dev));
487
488 while ((attr = display_sysfs_attrs[i++]) != NULL)
489 device_remove_file(&dssdev->dev, attr);
490
491 if (dssdev->manager)
492 dssdev->manager->unset_device(dssdev->manager);
493}
494
495static int dss_suspend_device(struct device *dev, void *data)
496{
497 int r;
498 struct omap_dss_device *dssdev = to_dss_device(dev);
499
500 if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) {
501 dssdev->activate_after_resume = false;
502 return 0;
503 }
504
505 if (!dssdev->suspend) {
506 DSSERR("display '%s' doesn't implement suspend\n",
507 dssdev->name);
508 return -ENOSYS;
509 }
510
511 r = dssdev->suspend(dssdev);
512 if (r)
513 return r;
514
515 dssdev->activate_after_resume = true;
516
517 return 0;
518}
519
520int dss_suspend_all_devices(void)
521{
522 int r;
523 struct bus_type *bus = dss_get_bus();
524
525 r = bus_for_each_dev(bus, NULL, NULL, dss_suspend_device);
526 if (r) {
527 /* resume all displays that were suspended */
528 dss_resume_all_devices();
529 return r;
530 }
531
532 return 0;
533}
534
535static int dss_resume_device(struct device *dev, void *data)
536{
537 int r;
538 struct omap_dss_device *dssdev = to_dss_device(dev);
539
540 if (dssdev->activate_after_resume && dssdev->resume) {
541 r = dssdev->resume(dssdev);
542 if (r)
543 return r;
544 }
545
546 dssdev->activate_after_resume = false;
547
548 return 0;
549}
550
551int dss_resume_all_devices(void)
552{
553 struct bus_type *bus = dss_get_bus();
554
555 return bus_for_each_dev(bus, NULL, NULL, dss_resume_device);
556}
557
558static int dss_disable_device(struct device *dev, void *data)
559{
560 struct omap_dss_device *dssdev = to_dss_device(dev);
561 dssdev->disable(dssdev);
562 return 0;
563}
564
565void dss_disable_all_devices(void)
566{
567 struct bus_type *bus = dss_get_bus();
568 bus_for_each_dev(bus, NULL, NULL, dss_disable_device);
569}
570
571
572void omap_dss_get_device(struct omap_dss_device *dssdev)
573{
574 get_device(&dssdev->dev);
575}
576EXPORT_SYMBOL(omap_dss_get_device);
577
578void omap_dss_put_device(struct omap_dss_device *dssdev)
579{
580 put_device(&dssdev->dev);
581}
582EXPORT_SYMBOL(omap_dss_put_device);
583
584/* ref count of the found device is incremented. ref count
585 * of from-device is decremented. */
586struct omap_dss_device *omap_dss_get_next_device(struct omap_dss_device *from)
587{
588 struct device *dev;
589 struct device *dev_start = NULL;
590 struct omap_dss_device *dssdev = NULL;
591
592 int match(struct device *dev, void *data)
593 {
594 /* skip panels connected to controllers */
595 if (to_dss_device(dev)->panel.ctrl)
596 return 0;
597
598 return 1;
599 }
600
601 if (from)
602 dev_start = &from->dev;
603 dev = bus_find_device(dss_get_bus(), dev_start, NULL, match);
604 if (dev)
605 dssdev = to_dss_device(dev);
606 if (from)
607 put_device(&from->dev);
608
609 return dssdev;
610}
611EXPORT_SYMBOL(omap_dss_get_next_device);
612
613struct omap_dss_device *omap_dss_find_device(void *data,
614 int (*match)(struct omap_dss_device *dssdev, void *data))
615{
616 struct omap_dss_device *dssdev = NULL;
617
618 while ((dssdev = omap_dss_get_next_device(dssdev)) != NULL) {
619 if (match(dssdev, data))
620 return dssdev;
621 }
622
623 return NULL;
624}
625EXPORT_SYMBOL(omap_dss_find_device);
626
627int omap_dss_start_device(struct omap_dss_device *dssdev)
628{
629 int r;
630
631 if (!dssdev->driver) {
632 DSSDBG("no driver\n");
633 r = -ENODEV;
634 goto err0;
635 }
636
637 if (dssdev->ctrl.panel && !dssdev->ctrl.panel->driver) {
638 DSSDBG("no panel driver\n");
639 r = -ENODEV;
640 goto err0;
641 }
642
643 if (!try_module_get(dssdev->dev.driver->owner)) {
644 r = -ENODEV;
645 goto err0;
646 }
647
648 if (dssdev->ctrl.panel) {
649 if (!try_module_get(dssdev->ctrl.panel->dev.driver->owner)) {
650 r = -ENODEV;
651 goto err1;
652 }
653 }
654
655 return 0;
656err1:
657 module_put(dssdev->dev.driver->owner);
658err0:
659 return r;
660}
661EXPORT_SYMBOL(omap_dss_start_device);
662
663void omap_dss_stop_device(struct omap_dss_device *dssdev)
664{
665 if (dssdev->ctrl.panel)
666 module_put(dssdev->ctrl.panel->dev.driver->owner);
667
668 module_put(dssdev->dev.driver->owner);
669}
670EXPORT_SYMBOL(omap_dss_stop_device);
671
diff --git a/drivers/video/omap2/dss/manager.c b/drivers/video/omap2/dss/manager.c
new file mode 100644
index 000000000000..27d9c465c851
--- /dev/null
+++ b/drivers/video/omap2/dss/manager.c
@@ -0,0 +1,1487 @@
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/module.h>
27#include <linux/platform_device.h>
28#include <linux/spinlock.h>
29#include <linux/jiffies.h>
30
31#include <plat/display.h>
32#include <plat/cpu.h>
33
34#include "dss.h"
35
36static int num_managers;
37static struct list_head manager_list;
38
39static ssize_t manager_name_show(struct omap_overlay_manager *mgr, char *buf)
40{
41 return snprintf(buf, PAGE_SIZE, "%s\n", mgr->name);
42}
43
44static ssize_t manager_display_show(struct omap_overlay_manager *mgr, char *buf)
45{
46 return snprintf(buf, PAGE_SIZE, "%s\n",
47 mgr->device ? mgr->device->name : "<none>");
48}
49
50static ssize_t manager_display_store(struct omap_overlay_manager *mgr,
51 const char *buf, size_t size)
52{
53 int r = 0;
54 size_t len = size;
55 struct omap_dss_device *dssdev = NULL;
56
57 int match(struct omap_dss_device *dssdev, void *data)
58 {
59 const char *str = data;
60 return sysfs_streq(dssdev->name, str);
61 }
62
63 if (buf[size-1] == '\n')
64 --len;
65
66 if (len > 0)
67 dssdev = omap_dss_find_device((void *)buf, match);
68
69 if (len > 0 && dssdev == NULL)
70 return -EINVAL;
71
72 if (dssdev)
73 DSSDBG("display %s found\n", dssdev->name);
74
75 if (mgr->device) {
76 r = mgr->unset_device(mgr);
77 if (r) {
78 DSSERR("failed to unset display\n");
79 goto put_device;
80 }
81 }
82
83 if (dssdev) {
84 r = mgr->set_device(mgr, dssdev);
85 if (r) {
86 DSSERR("failed to set manager\n");
87 goto put_device;
88 }
89
90 r = mgr->apply(mgr);
91 if (r) {
92 DSSERR("failed to apply dispc config\n");
93 goto put_device;
94 }
95 }
96
97put_device:
98 if (dssdev)
99 omap_dss_put_device(dssdev);
100
101 return r ? r : size;
102}
103
104static ssize_t manager_default_color_show(struct omap_overlay_manager *mgr,
105 char *buf)
106{
107 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.default_color);
108}
109
110static ssize_t manager_default_color_store(struct omap_overlay_manager *mgr,
111 const char *buf, size_t size)
112{
113 struct omap_overlay_manager_info info;
114 u32 color;
115 int r;
116
117 if (sscanf(buf, "%d", &color) != 1)
118 return -EINVAL;
119
120 mgr->get_manager_info(mgr, &info);
121
122 info.default_color = color;
123
124 r = mgr->set_manager_info(mgr, &info);
125 if (r)
126 return r;
127
128 r = mgr->apply(mgr);
129 if (r)
130 return r;
131
132 return size;
133}
134
135static const char *trans_key_type_str[] = {
136 "gfx-destination",
137 "video-source",
138};
139
140static ssize_t manager_trans_key_type_show(struct omap_overlay_manager *mgr,
141 char *buf)
142{
143 enum omap_dss_trans_key_type key_type;
144
145 key_type = mgr->info.trans_key_type;
146 BUG_ON(key_type >= ARRAY_SIZE(trans_key_type_str));
147
148 return snprintf(buf, PAGE_SIZE, "%s\n", trans_key_type_str[key_type]);
149}
150
151static ssize_t manager_trans_key_type_store(struct omap_overlay_manager *mgr,
152 const char *buf, size_t size)
153{
154 enum omap_dss_trans_key_type key_type;
155 struct omap_overlay_manager_info info;
156 int r;
157
158 for (key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
159 key_type < ARRAY_SIZE(trans_key_type_str); key_type++) {
160 if (sysfs_streq(buf, trans_key_type_str[key_type]))
161 break;
162 }
163
164 if (key_type == ARRAY_SIZE(trans_key_type_str))
165 return -EINVAL;
166
167 mgr->get_manager_info(mgr, &info);
168
169 info.trans_key_type = key_type;
170
171 r = mgr->set_manager_info(mgr, &info);
172 if (r)
173 return r;
174
175 r = mgr->apply(mgr);
176 if (r)
177 return r;
178
179 return size;
180}
181
182static ssize_t manager_trans_key_value_show(struct omap_overlay_manager *mgr,
183 char *buf)
184{
185 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.trans_key);
186}
187
188static ssize_t manager_trans_key_value_store(struct omap_overlay_manager *mgr,
189 const char *buf, size_t size)
190{
191 struct omap_overlay_manager_info info;
192 u32 key_value;
193 int r;
194
195 if (sscanf(buf, "%d", &key_value) != 1)
196 return -EINVAL;
197
198 mgr->get_manager_info(mgr, &info);
199
200 info.trans_key = key_value;
201
202 r = mgr->set_manager_info(mgr, &info);
203 if (r)
204 return r;
205
206 r = mgr->apply(mgr);
207 if (r)
208 return r;
209
210 return size;
211}
212
213static ssize_t manager_trans_key_enabled_show(struct omap_overlay_manager *mgr,
214 char *buf)
215{
216 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.trans_enabled);
217}
218
219static ssize_t manager_trans_key_enabled_store(struct omap_overlay_manager *mgr,
220 const char *buf, size_t size)
221{
222 struct omap_overlay_manager_info info;
223 int enable;
224 int r;
225
226 if (sscanf(buf, "%d", &enable) != 1)
227 return -EINVAL;
228
229 mgr->get_manager_info(mgr, &info);
230
231 info.trans_enabled = enable ? true : false;
232
233 r = mgr->set_manager_info(mgr, &info);
234 if (r)
235 return r;
236
237 r = mgr->apply(mgr);
238 if (r)
239 return r;
240
241 return size;
242}
243
244static ssize_t manager_alpha_blending_enabled_show(
245 struct omap_overlay_manager *mgr, char *buf)
246{
247 return snprintf(buf, PAGE_SIZE, "%d\n", mgr->info.alpha_enabled);
248}
249
250static ssize_t manager_alpha_blending_enabled_store(
251 struct omap_overlay_manager *mgr,
252 const char *buf, size_t size)
253{
254 struct omap_overlay_manager_info info;
255 int enable;
256 int r;
257
258 if (sscanf(buf, "%d", &enable) != 1)
259 return -EINVAL;
260
261 mgr->get_manager_info(mgr, &info);
262
263 info.alpha_enabled = enable ? true : false;
264
265 r = mgr->set_manager_info(mgr, &info);
266 if (r)
267 return r;
268
269 r = mgr->apply(mgr);
270 if (r)
271 return r;
272
273 return size;
274}
275
276struct manager_attribute {
277 struct attribute attr;
278 ssize_t (*show)(struct omap_overlay_manager *, char *);
279 ssize_t (*store)(struct omap_overlay_manager *, const char *, size_t);
280};
281
282#define MANAGER_ATTR(_name, _mode, _show, _store) \
283 struct manager_attribute manager_attr_##_name = \
284 __ATTR(_name, _mode, _show, _store)
285
286static MANAGER_ATTR(name, S_IRUGO, manager_name_show, NULL);
287static MANAGER_ATTR(display, S_IRUGO|S_IWUSR,
288 manager_display_show, manager_display_store);
289static MANAGER_ATTR(default_color, S_IRUGO|S_IWUSR,
290 manager_default_color_show, manager_default_color_store);
291static MANAGER_ATTR(trans_key_type, S_IRUGO|S_IWUSR,
292 manager_trans_key_type_show, manager_trans_key_type_store);
293static MANAGER_ATTR(trans_key_value, S_IRUGO|S_IWUSR,
294 manager_trans_key_value_show, manager_trans_key_value_store);
295static MANAGER_ATTR(trans_key_enabled, S_IRUGO|S_IWUSR,
296 manager_trans_key_enabled_show,
297 manager_trans_key_enabled_store);
298static MANAGER_ATTR(alpha_blending_enabled, S_IRUGO|S_IWUSR,
299 manager_alpha_blending_enabled_show,
300 manager_alpha_blending_enabled_store);
301
302
303static struct attribute *manager_sysfs_attrs[] = {
304 &manager_attr_name.attr,
305 &manager_attr_display.attr,
306 &manager_attr_default_color.attr,
307 &manager_attr_trans_key_type.attr,
308 &manager_attr_trans_key_value.attr,
309 &manager_attr_trans_key_enabled.attr,
310 &manager_attr_alpha_blending_enabled.attr,
311 NULL
312};
313
314static ssize_t manager_attr_show(struct kobject *kobj, struct attribute *attr,
315 char *buf)
316{
317 struct omap_overlay_manager *manager;
318 struct manager_attribute *manager_attr;
319
320 manager = container_of(kobj, struct omap_overlay_manager, kobj);
321 manager_attr = container_of(attr, struct manager_attribute, attr);
322
323 if (!manager_attr->show)
324 return -ENOENT;
325
326 return manager_attr->show(manager, buf);
327}
328
329static ssize_t manager_attr_store(struct kobject *kobj, struct attribute *attr,
330 const char *buf, size_t size)
331{
332 struct omap_overlay_manager *manager;
333 struct manager_attribute *manager_attr;
334
335 manager = container_of(kobj, struct omap_overlay_manager, kobj);
336 manager_attr = container_of(attr, struct manager_attribute, attr);
337
338 if (!manager_attr->store)
339 return -ENOENT;
340
341 return manager_attr->store(manager, buf, size);
342}
343
344static struct sysfs_ops manager_sysfs_ops = {
345 .show = manager_attr_show,
346 .store = manager_attr_store,
347};
348
349static struct kobj_type manager_ktype = {
350 .sysfs_ops = &manager_sysfs_ops,
351 .default_attrs = manager_sysfs_attrs,
352};
353
354/*
355 * We have 4 levels of cache for the dispc settings. First two are in SW and
356 * the latter two in HW.
357 *
358 * +--------------------+
359 * |overlay/manager_info|
360 * +--------------------+
361 * v
362 * apply()
363 * v
364 * +--------------------+
365 * | dss_cache |
366 * +--------------------+
367 * v
368 * configure()
369 * v
370 * +--------------------+
371 * | shadow registers |
372 * +--------------------+
373 * v
374 * VFP or lcd/digit_enable
375 * v
376 * +--------------------+
377 * | registers |
378 * +--------------------+
379 */
380
381struct overlay_cache_data {
382 /* If true, cache changed, but not written to shadow registers. Set
383 * in apply(), cleared when registers written. */
384 bool dirty;
385 /* If true, shadow registers contain changed values not yet in real
386 * registers. Set when writing to shadow registers, cleared at
387 * VSYNC/EVSYNC */
388 bool shadow_dirty;
389
390 bool enabled;
391
392 u32 paddr;
393 void __iomem *vaddr;
394 u16 screen_width;
395 u16 width;
396 u16 height;
397 enum omap_color_mode color_mode;
398 u8 rotation;
399 enum omap_dss_rotation_type rotation_type;
400 bool mirror;
401
402 u16 pos_x;
403 u16 pos_y;
404 u16 out_width; /* if 0, out_width == width */
405 u16 out_height; /* if 0, out_height == height */
406 u8 global_alpha;
407
408 enum omap_channel channel;
409 bool replication;
410 bool ilace;
411
412 enum omap_burst_size burst_size;
413 u32 fifo_low;
414 u32 fifo_high;
415
416 bool manual_update;
417};
418
419struct manager_cache_data {
420 /* If true, cache changed, but not written to shadow registers. Set
421 * in apply(), cleared when registers written. */
422 bool dirty;
423 /* If true, shadow registers contain changed values not yet in real
424 * registers. Set when writing to shadow registers, cleared at
425 * VSYNC/EVSYNC */
426 bool shadow_dirty;
427
428 u32 default_color;
429
430 enum omap_dss_trans_key_type trans_key_type;
431 u32 trans_key;
432 bool trans_enabled;
433
434 bool alpha_enabled;
435
436 bool manual_upd_display;
437 bool manual_update;
438 bool do_manual_update;
439
440 /* manual update region */
441 u16 x, y, w, h;
442};
443
444static struct {
445 spinlock_t lock;
446 struct overlay_cache_data overlay_cache[3];
447 struct manager_cache_data manager_cache[2];
448
449 bool irq_enabled;
450} dss_cache;
451
452
453
454static int omap_dss_set_device(struct omap_overlay_manager *mgr,
455 struct omap_dss_device *dssdev)
456{
457 int i;
458 int r;
459
460 if (dssdev->manager) {
461 DSSERR("display '%s' already has a manager '%s'\n",
462 dssdev->name, dssdev->manager->name);
463 return -EINVAL;
464 }
465
466 if ((mgr->supported_displays & dssdev->type) == 0) {
467 DSSERR("display '%s' does not support manager '%s'\n",
468 dssdev->name, mgr->name);
469 return -EINVAL;
470 }
471
472 for (i = 0; i < mgr->num_overlays; i++) {
473 struct omap_overlay *ovl = mgr->overlays[i];
474
475 if (ovl->manager != mgr || !ovl->info.enabled)
476 continue;
477
478 r = dss_check_overlay(ovl, dssdev);
479 if (r)
480 return r;
481 }
482
483 dssdev->manager = mgr;
484 mgr->device = dssdev;
485 mgr->device_changed = true;
486
487 return 0;
488}
489
490static int omap_dss_unset_device(struct omap_overlay_manager *mgr)
491{
492 if (!mgr->device) {
493 DSSERR("failed to unset display, display not set.\n");
494 return -EINVAL;
495 }
496
497 mgr->device->manager = NULL;
498 mgr->device = NULL;
499 mgr->device_changed = true;
500
501 return 0;
502}
503
504static int dss_mgr_wait_for_go(struct omap_overlay_manager *mgr)
505{
506 unsigned long timeout = msecs_to_jiffies(500);
507 struct manager_cache_data *mc;
508 enum omap_channel channel;
509 u32 irq;
510 int r;
511 int i;
512
513 if (!mgr->device)
514 return 0;
515
516 if (mgr->device->type == OMAP_DISPLAY_TYPE_VENC) {
517 irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
518 channel = OMAP_DSS_CHANNEL_DIGIT;
519 } else {
520 if (mgr->device->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
521 enum omap_dss_update_mode mode;
522 mode = mgr->device->get_update_mode(mgr->device);
523 if (mode != OMAP_DSS_UPDATE_AUTO)
524 return 0;
525
526 irq = DISPC_IRQ_FRAMEDONE;
527 } else {
528 irq = DISPC_IRQ_VSYNC;
529 }
530 channel = OMAP_DSS_CHANNEL_LCD;
531 }
532
533 mc = &dss_cache.manager_cache[mgr->id];
534 i = 0;
535 while (1) {
536 unsigned long flags;
537 bool shadow_dirty, dirty;
538
539 spin_lock_irqsave(&dss_cache.lock, flags);
540 dirty = mc->dirty;
541 shadow_dirty = mc->shadow_dirty;
542 spin_unlock_irqrestore(&dss_cache.lock, flags);
543
544 if (!dirty && !shadow_dirty) {
545 r = 0;
546 break;
547 }
548
549 /* 4 iterations is the worst case:
550 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
551 * 2 - first VSYNC, dirty = true
552 * 3 - dirty = false, shadow_dirty = true
553 * 4 - shadow_dirty = false */
554 if (i++ == 3) {
555 DSSERR("mgr(%d)->wait_for_go() not finishing\n",
556 mgr->id);
557 r = 0;
558 break;
559 }
560
561 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
562 if (r == -ERESTARTSYS)
563 break;
564
565 if (r) {
566 DSSERR("mgr(%d)->wait_for_go() timeout\n", mgr->id);
567 break;
568 }
569 }
570
571 return r;
572}
573
574int dss_mgr_wait_for_go_ovl(struct omap_overlay *ovl)
575{
576 unsigned long timeout = msecs_to_jiffies(500);
577 enum omap_channel channel;
578 struct overlay_cache_data *oc;
579 struct omap_dss_device *dssdev;
580 u32 irq;
581 int r;
582 int i;
583
584 if (!ovl->manager || !ovl->manager->device)
585 return 0;
586
587 dssdev = ovl->manager->device;
588
589 if (dssdev->type == OMAP_DISPLAY_TYPE_VENC) {
590 irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN;
591 channel = OMAP_DSS_CHANNEL_DIGIT;
592 } else {
593 if (dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
594 enum omap_dss_update_mode mode;
595 mode = dssdev->get_update_mode(dssdev);
596 if (mode != OMAP_DSS_UPDATE_AUTO)
597 return 0;
598
599 irq = DISPC_IRQ_FRAMEDONE;
600 } else {
601 irq = DISPC_IRQ_VSYNC;
602 }
603 channel = OMAP_DSS_CHANNEL_LCD;
604 }
605
606 oc = &dss_cache.overlay_cache[ovl->id];
607 i = 0;
608 while (1) {
609 unsigned long flags;
610 bool shadow_dirty, dirty;
611
612 spin_lock_irqsave(&dss_cache.lock, flags);
613 dirty = oc->dirty;
614 shadow_dirty = oc->shadow_dirty;
615 spin_unlock_irqrestore(&dss_cache.lock, flags);
616
617 if (!dirty && !shadow_dirty) {
618 r = 0;
619 break;
620 }
621
622 /* 4 iterations is the worst case:
623 * 1 - initial iteration, dirty = true (between VFP and VSYNC)
624 * 2 - first VSYNC, dirty = true
625 * 3 - dirty = false, shadow_dirty = true
626 * 4 - shadow_dirty = false */
627 if (i++ == 3) {
628 DSSERR("ovl(%d)->wait_for_go() not finishing\n",
629 ovl->id);
630 r = 0;
631 break;
632 }
633
634 r = omap_dispc_wait_for_irq_interruptible_timeout(irq, timeout);
635 if (r == -ERESTARTSYS)
636 break;
637
638 if (r) {
639 DSSERR("ovl(%d)->wait_for_go() timeout\n", ovl->id);
640 break;
641 }
642 }
643
644 return r;
645}
646
647static int overlay_enabled(struct omap_overlay *ovl)
648{
649 return ovl->info.enabled && ovl->manager && ovl->manager->device;
650}
651
652/* Is rect1 a subset of rect2? */
653static bool rectangle_subset(int x1, int y1, int w1, int h1,
654 int x2, int y2, int w2, int h2)
655{
656 if (x1 < x2 || y1 < y2)
657 return false;
658
659 if (x1 + w1 > x2 + w2)
660 return false;
661
662 if (y1 + h1 > y2 + h2)
663 return false;
664
665 return true;
666}
667
668/* Do rect1 and rect2 overlap? */
669static bool rectangle_intersects(int x1, int y1, int w1, int h1,
670 int x2, int y2, int w2, int h2)
671{
672 if (x1 >= x2 + w2)
673 return false;
674
675 if (x2 >= x1 + w1)
676 return false;
677
678 if (y1 >= y2 + h2)
679 return false;
680
681 if (y2 >= y1 + h1)
682 return false;
683
684 return true;
685}
686
687static bool dispc_is_overlay_scaled(struct overlay_cache_data *oc)
688{
689 if (oc->out_width != 0 && oc->width != oc->out_width)
690 return true;
691
692 if (oc->out_height != 0 && oc->height != oc->out_height)
693 return true;
694
695 return false;
696}
697
698static int configure_overlay(enum omap_plane plane)
699{
700 struct overlay_cache_data *c;
701 struct manager_cache_data *mc;
702 u16 outw, outh;
703 u16 x, y, w, h;
704 u32 paddr;
705 int r;
706
707 DSSDBGF("%d", plane);
708
709 c = &dss_cache.overlay_cache[plane];
710
711 if (!c->enabled) {
712 dispc_enable_plane(plane, 0);
713 return 0;
714 }
715
716 mc = &dss_cache.manager_cache[c->channel];
717
718 x = c->pos_x;
719 y = c->pos_y;
720 w = c->width;
721 h = c->height;
722 outw = c->out_width == 0 ? c->width : c->out_width;
723 outh = c->out_height == 0 ? c->height : c->out_height;
724 paddr = c->paddr;
725
726 if (c->manual_update && mc->do_manual_update) {
727 unsigned bpp;
728 /* If the overlay is outside the update region, disable it */
729 if (!rectangle_intersects(mc->x, mc->y, mc->w, mc->h,
730 x, y, outw, outh)) {
731 dispc_enable_plane(plane, 0);
732 return 0;
733 }
734
735 switch (c->color_mode) {
736 case OMAP_DSS_COLOR_RGB16:
737 case OMAP_DSS_COLOR_ARGB16:
738 case OMAP_DSS_COLOR_YUV2:
739 case OMAP_DSS_COLOR_UYVY:
740 bpp = 16;
741 break;
742
743 case OMAP_DSS_COLOR_RGB24P:
744 bpp = 24;
745 break;
746
747 case OMAP_DSS_COLOR_RGB24U:
748 case OMAP_DSS_COLOR_ARGB32:
749 case OMAP_DSS_COLOR_RGBA32:
750 case OMAP_DSS_COLOR_RGBX32:
751 bpp = 32;
752 break;
753
754 default:
755 BUG();
756 }
757
758 if (dispc_is_overlay_scaled(c)) {
759 /* If the overlay is scaled, the update area has
760 * already been enlarged to cover the whole overlay. We
761 * only need to adjust x/y here */
762 x = c->pos_x - mc->x;
763 y = c->pos_y - mc->y;
764 } else {
765 if (mc->x > c->pos_x) {
766 x = 0;
767 w -= (mc->x - c->pos_x);
768 paddr += (mc->x - c->pos_x) * bpp / 8;
769 } else {
770 x = c->pos_x - mc->x;
771 }
772
773 if (mc->y > c->pos_y) {
774 y = 0;
775 h -= (mc->y - c->pos_y);
776 paddr += (mc->y - c->pos_y) * c->screen_width *
777 bpp / 8;
778 } else {
779 y = c->pos_y - mc->y;
780 }
781
782 if (mc->w < (x+w))
783 w -= (x+w) - (mc->w);
784
785 if (mc->h < (y+h))
786 h -= (y+h) - (mc->h);
787
788 outw = w;
789 outh = h;
790 }
791 }
792
793 r = dispc_setup_plane(plane,
794 paddr,
795 c->screen_width,
796 x, y,
797 w, h,
798 outw, outh,
799 c->color_mode,
800 c->ilace,
801 c->rotation_type,
802 c->rotation,
803 c->mirror,
804 c->global_alpha);
805
806 if (r) {
807 /* this shouldn't happen */
808 DSSERR("dispc_setup_plane failed for ovl %d\n", plane);
809 dispc_enable_plane(plane, 0);
810 return r;
811 }
812
813 dispc_enable_replication(plane, c->replication);
814
815 dispc_set_burst_size(plane, c->burst_size);
816 dispc_setup_plane_fifo(plane, c->fifo_low, c->fifo_high);
817
818 dispc_enable_plane(plane, 1);
819
820 return 0;
821}
822
823static void configure_manager(enum omap_channel channel)
824{
825 struct manager_cache_data *c;
826
827 DSSDBGF("%d", channel);
828
829 c = &dss_cache.manager_cache[channel];
830
831 dispc_set_trans_key(channel, c->trans_key_type, c->trans_key);
832 dispc_enable_trans_key(channel, c->trans_enabled);
833 dispc_enable_alpha_blending(channel, c->alpha_enabled);
834}
835
836/* configure_dispc() tries to write values from cache to shadow registers.
837 * It writes only to those managers/overlays that are not busy.
838 * returns 0 if everything could be written to shadow registers.
839 * returns 1 if not everything could be written to shadow registers. */
840static int configure_dispc(void)
841{
842 struct overlay_cache_data *oc;
843 struct manager_cache_data *mc;
844 const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
845 const int num_mgrs = ARRAY_SIZE(dss_cache.manager_cache);
846 int i;
847 int r;
848 bool mgr_busy[2];
849 bool mgr_go[2];
850 bool busy;
851
852 r = 0;
853 busy = false;
854
855 mgr_busy[0] = dispc_go_busy(0);
856 mgr_busy[1] = dispc_go_busy(1);
857 mgr_go[0] = false;
858 mgr_go[1] = false;
859
860 /* Commit overlay settings */
861 for (i = 0; i < num_ovls; ++i) {
862 oc = &dss_cache.overlay_cache[i];
863 mc = &dss_cache.manager_cache[oc->channel];
864
865 if (!oc->dirty)
866 continue;
867
868 if (oc->manual_update && !mc->do_manual_update)
869 continue;
870
871 if (mgr_busy[oc->channel]) {
872 busy = true;
873 continue;
874 }
875
876 r = configure_overlay(i);
877 if (r)
878 DSSERR("configure_overlay %d failed\n", i);
879
880 oc->dirty = false;
881 oc->shadow_dirty = true;
882 mgr_go[oc->channel] = true;
883 }
884
885 /* Commit manager settings */
886 for (i = 0; i < num_mgrs; ++i) {
887 mc = &dss_cache.manager_cache[i];
888
889 if (!mc->dirty)
890 continue;
891
892 if (mc->manual_update && !mc->do_manual_update)
893 continue;
894
895 if (mgr_busy[i]) {
896 busy = true;
897 continue;
898 }
899
900 configure_manager(i);
901 mc->dirty = false;
902 mc->shadow_dirty = true;
903 mgr_go[i] = true;
904 }
905
906 /* set GO */
907 for (i = 0; i < num_mgrs; ++i) {
908 mc = &dss_cache.manager_cache[i];
909
910 if (!mgr_go[i])
911 continue;
912
913 /* We don't need GO with manual update display. LCD iface will
914 * always be turned off after frame, and new settings will be
915 * taken in to use at next update */
916 if (!mc->manual_upd_display)
917 dispc_go(i);
918 }
919
920 if (busy)
921 r = 1;
922 else
923 r = 0;
924
925 return r;
926}
927
928/* Configure dispc for partial update. Return possibly modified update
929 * area */
930void dss_setup_partial_planes(struct omap_dss_device *dssdev,
931 u16 *xi, u16 *yi, u16 *wi, u16 *hi)
932{
933 struct overlay_cache_data *oc;
934 struct manager_cache_data *mc;
935 const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
936 struct omap_overlay_manager *mgr;
937 int i;
938 u16 x, y, w, h;
939 unsigned long flags;
940
941 x = *xi;
942 y = *yi;
943 w = *wi;
944 h = *hi;
945
946 DSSDBG("dispc_setup_partial_planes %d,%d %dx%d\n",
947 *xi, *yi, *wi, *hi);
948
949 mgr = dssdev->manager;
950
951 if (!mgr) {
952 DSSDBG("no manager\n");
953 return;
954 }
955
956 spin_lock_irqsave(&dss_cache.lock, flags);
957
958 /* We need to show the whole overlay if it is scaled. So look for
959 * those, and make the update area larger if found.
960 * Also mark the overlay cache dirty */
961 for (i = 0; i < num_ovls; ++i) {
962 unsigned x1, y1, x2, y2;
963 unsigned outw, outh;
964
965 oc = &dss_cache.overlay_cache[i];
966
967 if (oc->channel != mgr->id)
968 continue;
969
970 oc->dirty = true;
971
972 if (!oc->enabled)
973 continue;
974
975 if (!dispc_is_overlay_scaled(oc))
976 continue;
977
978 outw = oc->out_width == 0 ? oc->width : oc->out_width;
979 outh = oc->out_height == 0 ? oc->height : oc->out_height;
980
981 /* is the overlay outside the update region? */
982 if (!rectangle_intersects(x, y, w, h,
983 oc->pos_x, oc->pos_y,
984 outw, outh))
985 continue;
986
987 /* if the overlay totally inside the update region? */
988 if (rectangle_subset(oc->pos_x, oc->pos_y, outw, outh,
989 x, y, w, h))
990 continue;
991
992 if (x > oc->pos_x)
993 x1 = oc->pos_x;
994 else
995 x1 = x;
996
997 if (y > oc->pos_y)
998 y1 = oc->pos_y;
999 else
1000 y1 = y;
1001
1002 if ((x + w) < (oc->pos_x + outw))
1003 x2 = oc->pos_x + outw;
1004 else
1005 x2 = x + w;
1006
1007 if ((y + h) < (oc->pos_y + outh))
1008 y2 = oc->pos_y + outh;
1009 else
1010 y2 = y + h;
1011
1012 x = x1;
1013 y = y1;
1014 w = x2 - x1;
1015 h = y2 - y1;
1016
1017 DSSDBG("changing upd area due to ovl(%d) scaling %d,%d %dx%d\n",
1018 i, x, y, w, h);
1019 }
1020
1021 mc = &dss_cache.manager_cache[mgr->id];
1022 mc->do_manual_update = true;
1023 mc->x = x;
1024 mc->y = y;
1025 mc->w = w;
1026 mc->h = h;
1027
1028 configure_dispc();
1029
1030 mc->do_manual_update = false;
1031
1032 spin_unlock_irqrestore(&dss_cache.lock, flags);
1033
1034 *xi = x;
1035 *yi = y;
1036 *wi = w;
1037 *hi = h;
1038}
1039
1040void dss_start_update(struct omap_dss_device *dssdev)
1041{
1042 struct manager_cache_data *mc;
1043 struct overlay_cache_data *oc;
1044 const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
1045 const int num_mgrs = ARRAY_SIZE(dss_cache.manager_cache);
1046 struct omap_overlay_manager *mgr;
1047 int i;
1048
1049 mgr = dssdev->manager;
1050
1051 for (i = 0; i < num_ovls; ++i) {
1052 oc = &dss_cache.overlay_cache[i];
1053 if (oc->channel != mgr->id)
1054 continue;
1055
1056 oc->shadow_dirty = false;
1057 }
1058
1059 for (i = 0; i < num_mgrs; ++i) {
1060 mc = &dss_cache.manager_cache[i];
1061 if (mgr->id != i)
1062 continue;
1063
1064 mc->shadow_dirty = false;
1065 }
1066
1067 dispc_enable_lcd_out(1);
1068}
1069
1070static void dss_apply_irq_handler(void *data, u32 mask)
1071{
1072 struct manager_cache_data *mc;
1073 struct overlay_cache_data *oc;
1074 const int num_ovls = ARRAY_SIZE(dss_cache.overlay_cache);
1075 const int num_mgrs = ARRAY_SIZE(dss_cache.manager_cache);
1076 int i, r;
1077 bool mgr_busy[2];
1078
1079 mgr_busy[0] = dispc_go_busy(0);
1080 mgr_busy[1] = dispc_go_busy(1);
1081
1082 spin_lock(&dss_cache.lock);
1083
1084 for (i = 0; i < num_ovls; ++i) {
1085 oc = &dss_cache.overlay_cache[i];
1086 if (!mgr_busy[oc->channel])
1087 oc->shadow_dirty = false;
1088 }
1089
1090 for (i = 0; i < num_mgrs; ++i) {
1091 mc = &dss_cache.manager_cache[i];
1092 if (!mgr_busy[i])
1093 mc->shadow_dirty = false;
1094 }
1095
1096 r = configure_dispc();
1097 if (r == 1)
1098 goto end;
1099
1100 /* re-read busy flags */
1101 mgr_busy[0] = dispc_go_busy(0);
1102 mgr_busy[1] = dispc_go_busy(1);
1103
1104 /* keep running as long as there are busy managers, so that
1105 * we can collect overlay-applied information */
1106 for (i = 0; i < num_mgrs; ++i) {
1107 if (mgr_busy[i])
1108 goto end;
1109 }
1110
1111 omap_dispc_unregister_isr(dss_apply_irq_handler, NULL,
1112 DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
1113 DISPC_IRQ_EVSYNC_EVEN);
1114 dss_cache.irq_enabled = false;
1115
1116end:
1117 spin_unlock(&dss_cache.lock);
1118}
1119
1120static int omap_dss_mgr_apply(struct omap_overlay_manager *mgr)
1121{
1122 struct overlay_cache_data *oc;
1123 struct manager_cache_data *mc;
1124 int i;
1125 struct omap_overlay *ovl;
1126 int num_planes_enabled = 0;
1127 bool use_fifomerge;
1128 unsigned long flags;
1129 int r;
1130
1131 DSSDBG("omap_dss_mgr_apply(%s)\n", mgr->name);
1132
1133 spin_lock_irqsave(&dss_cache.lock, flags);
1134
1135 /* Configure overlays */
1136 for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
1137 struct omap_dss_device *dssdev;
1138
1139 ovl = omap_dss_get_overlay(i);
1140
1141 if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
1142 continue;
1143
1144 oc = &dss_cache.overlay_cache[ovl->id];
1145
1146 if (!overlay_enabled(ovl)) {
1147 if (oc->enabled) {
1148 oc->enabled = false;
1149 oc->dirty = true;
1150 }
1151 continue;
1152 }
1153
1154 if (!ovl->info_dirty) {
1155 if (oc->enabled)
1156 ++num_planes_enabled;
1157 continue;
1158 }
1159
1160 dssdev = ovl->manager->device;
1161
1162 if (dss_check_overlay(ovl, dssdev)) {
1163 if (oc->enabled) {
1164 oc->enabled = false;
1165 oc->dirty = true;
1166 }
1167 continue;
1168 }
1169
1170 ovl->info_dirty = false;
1171 oc->dirty = true;
1172
1173 oc->paddr = ovl->info.paddr;
1174 oc->vaddr = ovl->info.vaddr;
1175 oc->screen_width = ovl->info.screen_width;
1176 oc->width = ovl->info.width;
1177 oc->height = ovl->info.height;
1178 oc->color_mode = ovl->info.color_mode;
1179 oc->rotation = ovl->info.rotation;
1180 oc->rotation_type = ovl->info.rotation_type;
1181 oc->mirror = ovl->info.mirror;
1182 oc->pos_x = ovl->info.pos_x;
1183 oc->pos_y = ovl->info.pos_y;
1184 oc->out_width = ovl->info.out_width;
1185 oc->out_height = ovl->info.out_height;
1186 oc->global_alpha = ovl->info.global_alpha;
1187
1188 oc->replication =
1189 dss_use_replication(dssdev, ovl->info.color_mode);
1190
1191 oc->ilace = dssdev->type == OMAP_DISPLAY_TYPE_VENC;
1192
1193 oc->channel = ovl->manager->id;
1194
1195 oc->enabled = true;
1196
1197 oc->manual_update =
1198 dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE &&
1199 dssdev->get_update_mode(dssdev) != OMAP_DSS_UPDATE_AUTO;
1200
1201 ++num_planes_enabled;
1202 }
1203
1204 /* Configure managers */
1205 list_for_each_entry(mgr, &manager_list, list) {
1206 struct omap_dss_device *dssdev;
1207
1208 if (!(mgr->caps & OMAP_DSS_OVL_MGR_CAP_DISPC))
1209 continue;
1210
1211 mc = &dss_cache.manager_cache[mgr->id];
1212
1213 if (mgr->device_changed) {
1214 mgr->device_changed = false;
1215 mgr->info_dirty = true;
1216 }
1217
1218 if (!mgr->info_dirty)
1219 continue;
1220
1221 if (!mgr->device)
1222 continue;
1223
1224 dssdev = mgr->device;
1225
1226 mgr->info_dirty = false;
1227 mc->dirty = true;
1228
1229 mc->default_color = mgr->info.default_color;
1230 mc->trans_key_type = mgr->info.trans_key_type;
1231 mc->trans_key = mgr->info.trans_key;
1232 mc->trans_enabled = mgr->info.trans_enabled;
1233 mc->alpha_enabled = mgr->info.alpha_enabled;
1234
1235 mc->manual_upd_display =
1236 dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE;
1237
1238 mc->manual_update =
1239 dssdev->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE &&
1240 dssdev->get_update_mode(dssdev) != OMAP_DSS_UPDATE_AUTO;
1241 }
1242
1243 /* XXX TODO: Try to get fifomerge working. The problem is that it
1244 * affects both managers, not individually but at the same time. This
1245 * means the change has to be well synchronized. I guess the proper way
1246 * is to have a two step process for fifo merge:
1247 * fifomerge enable:
1248 * 1. disable other planes, leaving one plane enabled
1249 * 2. wait until the planes are disabled on HW
1250 * 3. config merged fifo thresholds, enable fifomerge
1251 * fifomerge disable:
1252 * 1. config unmerged fifo thresholds, disable fifomerge
1253 * 2. wait until fifo changes are in HW
1254 * 3. enable planes
1255 */
1256 use_fifomerge = false;
1257
1258 /* Configure overlay fifos */
1259 for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
1260 struct omap_dss_device *dssdev;
1261 u32 size;
1262
1263 ovl = omap_dss_get_overlay(i);
1264
1265 if (!(ovl->caps & OMAP_DSS_OVL_CAP_DISPC))
1266 continue;
1267
1268 oc = &dss_cache.overlay_cache[ovl->id];
1269
1270 if (!oc->enabled)
1271 continue;
1272
1273 dssdev = ovl->manager->device;
1274
1275 size = dispc_get_plane_fifo_size(ovl->id);
1276 if (use_fifomerge)
1277 size *= 3;
1278
1279 switch (dssdev->type) {
1280 case OMAP_DISPLAY_TYPE_DPI:
1281 case OMAP_DISPLAY_TYPE_DBI:
1282 case OMAP_DISPLAY_TYPE_SDI:
1283 case OMAP_DISPLAY_TYPE_VENC:
1284 default_get_overlay_fifo_thresholds(ovl->id, size,
1285 &oc->burst_size, &oc->fifo_low,
1286 &oc->fifo_high);
1287 break;
1288#ifdef CONFIG_OMAP2_DSS_DSI
1289 case OMAP_DISPLAY_TYPE_DSI:
1290 dsi_get_overlay_fifo_thresholds(ovl->id, size,
1291 &oc->burst_size, &oc->fifo_low,
1292 &oc->fifo_high);
1293 break;
1294#endif
1295 default:
1296 BUG();
1297 }
1298 }
1299
1300 r = 0;
1301 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
1302 if (!dss_cache.irq_enabled) {
1303 r = omap_dispc_register_isr(dss_apply_irq_handler, NULL,
1304 DISPC_IRQ_VSYNC | DISPC_IRQ_EVSYNC_ODD |
1305 DISPC_IRQ_EVSYNC_EVEN);
1306 dss_cache.irq_enabled = true;
1307 }
1308 configure_dispc();
1309 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
1310
1311 spin_unlock_irqrestore(&dss_cache.lock, flags);
1312
1313 return r;
1314}
1315
1316static int dss_check_manager(struct omap_overlay_manager *mgr)
1317{
1318 /* OMAP supports only graphics source transparency color key and alpha
1319 * blending simultaneously. See TRM 15.4.2.4.2.2 Alpha Mode */
1320
1321 if (mgr->info.alpha_enabled && mgr->info.trans_enabled &&
1322 mgr->info.trans_key_type != OMAP_DSS_COLOR_KEY_GFX_DST)
1323 return -EINVAL;
1324
1325 return 0;
1326}
1327
1328static int omap_dss_mgr_set_info(struct omap_overlay_manager *mgr,
1329 struct omap_overlay_manager_info *info)
1330{
1331 int r;
1332 struct omap_overlay_manager_info old_info;
1333
1334 old_info = mgr->info;
1335 mgr->info = *info;
1336
1337 r = dss_check_manager(mgr);
1338 if (r) {
1339 mgr->info = old_info;
1340 return r;
1341 }
1342
1343 mgr->info_dirty = true;
1344
1345 return 0;
1346}
1347
1348static void omap_dss_mgr_get_info(struct omap_overlay_manager *mgr,
1349 struct omap_overlay_manager_info *info)
1350{
1351 *info = mgr->info;
1352}
1353
1354static void omap_dss_add_overlay_manager(struct omap_overlay_manager *manager)
1355{
1356 ++num_managers;
1357 list_add_tail(&manager->list, &manager_list);
1358}
1359
1360int dss_init_overlay_managers(struct platform_device *pdev)
1361{
1362 int i, r;
1363
1364 spin_lock_init(&dss_cache.lock);
1365
1366 INIT_LIST_HEAD(&manager_list);
1367
1368 num_managers = 0;
1369
1370 for (i = 0; i < 2; ++i) {
1371 struct omap_overlay_manager *mgr;
1372 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1373
1374 BUG_ON(mgr == NULL);
1375
1376 switch (i) {
1377 case 0:
1378 mgr->name = "lcd";
1379 mgr->id = OMAP_DSS_CHANNEL_LCD;
1380 mgr->supported_displays =
1381 OMAP_DISPLAY_TYPE_DPI | OMAP_DISPLAY_TYPE_DBI |
1382 OMAP_DISPLAY_TYPE_SDI | OMAP_DISPLAY_TYPE_DSI;
1383 break;
1384 case 1:
1385 mgr->name = "tv";
1386 mgr->id = OMAP_DSS_CHANNEL_DIGIT;
1387 mgr->supported_displays = OMAP_DISPLAY_TYPE_VENC;
1388 break;
1389 }
1390
1391 mgr->set_device = &omap_dss_set_device;
1392 mgr->unset_device = &omap_dss_unset_device;
1393 mgr->apply = &omap_dss_mgr_apply;
1394 mgr->set_manager_info = &omap_dss_mgr_set_info;
1395 mgr->get_manager_info = &omap_dss_mgr_get_info;
1396 mgr->wait_for_go = &dss_mgr_wait_for_go;
1397
1398 mgr->caps = OMAP_DSS_OVL_MGR_CAP_DISPC;
1399
1400 dss_overlay_setup_dispc_manager(mgr);
1401
1402 omap_dss_add_overlay_manager(mgr);
1403
1404 r = kobject_init_and_add(&mgr->kobj, &manager_ktype,
1405 &pdev->dev.kobj, "manager%d", i);
1406
1407 if (r) {
1408 DSSERR("failed to create sysfs file\n");
1409 continue;
1410 }
1411 }
1412
1413#ifdef L4_EXAMPLE
1414 {
1415 int omap_dss_mgr_apply_l4(struct omap_overlay_manager *mgr)
1416 {
1417 DSSDBG("omap_dss_mgr_apply_l4(%s)\n", mgr->name);
1418
1419 return 0;
1420 }
1421
1422 struct omap_overlay_manager *mgr;
1423 mgr = kzalloc(sizeof(*mgr), GFP_KERNEL);
1424
1425 BUG_ON(mgr == NULL);
1426
1427 mgr->name = "l4";
1428 mgr->supported_displays =
1429 OMAP_DISPLAY_TYPE_DBI | OMAP_DISPLAY_TYPE_DSI;
1430
1431 mgr->set_device = &omap_dss_set_device;
1432 mgr->unset_device = &omap_dss_unset_device;
1433 mgr->apply = &omap_dss_mgr_apply_l4;
1434 mgr->set_manager_info = &omap_dss_mgr_set_info;
1435 mgr->get_manager_info = &omap_dss_mgr_get_info;
1436
1437 dss_overlay_setup_l4_manager(mgr);
1438
1439 omap_dss_add_overlay_manager(mgr);
1440
1441 r = kobject_init_and_add(&mgr->kobj, &manager_ktype,
1442 &pdev->dev.kobj, "managerl4");
1443
1444 if (r)
1445 DSSERR("failed to create sysfs file\n");
1446 }
1447#endif
1448
1449 return 0;
1450}
1451
1452void dss_uninit_overlay_managers(struct platform_device *pdev)
1453{
1454 struct omap_overlay_manager *mgr;
1455
1456 while (!list_empty(&manager_list)) {
1457 mgr = list_first_entry(&manager_list,
1458 struct omap_overlay_manager, list);
1459 list_del(&mgr->list);
1460 kobject_del(&mgr->kobj);
1461 kobject_put(&mgr->kobj);
1462 kfree(mgr);
1463 }
1464
1465 num_managers = 0;
1466}
1467
1468int omap_dss_get_num_overlay_managers(void)
1469{
1470 return num_managers;
1471}
1472EXPORT_SYMBOL(omap_dss_get_num_overlay_managers);
1473
1474struct omap_overlay_manager *omap_dss_get_overlay_manager(int num)
1475{
1476 int i = 0;
1477 struct omap_overlay_manager *mgr;
1478
1479 list_for_each_entry(mgr, &manager_list, list) {
1480 if (i++ == num)
1481 return mgr;
1482 }
1483
1484 return NULL;
1485}
1486EXPORT_SYMBOL(omap_dss_get_overlay_manager);
1487
diff --git a/drivers/video/omap2/dss/overlay.c b/drivers/video/omap2/dss/overlay.c
new file mode 100644
index 000000000000..b7f9a7339842
--- /dev/null
+++ b/drivers/video/omap2/dss/overlay.c
@@ -0,0 +1,680 @@
1/*
2 * linux/drivers/video/omap2/dss/overlay.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 "OVERLAY"
24
25#include <linux/kernel.h>
26#include <linux/module.h>
27#include <linux/err.h>
28#include <linux/sysfs.h>
29#include <linux/kobject.h>
30#include <linux/platform_device.h>
31#include <linux/delay.h>
32
33#include <plat/display.h>
34#include <plat/cpu.h>
35
36#include "dss.h"
37
38static int num_overlays;
39static struct list_head overlay_list;
40
41static ssize_t overlay_name_show(struct omap_overlay *ovl, char *buf)
42{
43 return snprintf(buf, PAGE_SIZE, "%s\n", ovl->name);
44}
45
46static ssize_t overlay_manager_show(struct omap_overlay *ovl, char *buf)
47{
48 return snprintf(buf, PAGE_SIZE, "%s\n",
49 ovl->manager ? ovl->manager->name : "<none>");
50}
51
52static ssize_t overlay_manager_store(struct omap_overlay *ovl, const char *buf,
53 size_t size)
54{
55 int i, r;
56 struct omap_overlay_manager *mgr = NULL;
57 struct omap_overlay_manager *old_mgr;
58 int len = size;
59
60 if (buf[size-1] == '\n')
61 --len;
62
63 if (len > 0) {
64 for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
65 mgr = omap_dss_get_overlay_manager(i);
66
67 if (strncmp(buf, mgr->name, len) == 0)
68 break;
69
70 mgr = NULL;
71 }
72 }
73
74 if (len > 0 && mgr == NULL)
75 return -EINVAL;
76
77 if (mgr)
78 DSSDBG("manager %s found\n", mgr->name);
79
80 if (mgr == ovl->manager)
81 return size;
82
83 old_mgr = ovl->manager;
84
85 /* detach old manager */
86 if (old_mgr) {
87 r = ovl->unset_manager(ovl);
88 if (r) {
89 DSSERR("detach failed\n");
90 return r;
91 }
92
93 r = old_mgr->apply(old_mgr);
94 if (r)
95 return r;
96 }
97
98 if (mgr) {
99 r = ovl->set_manager(ovl, mgr);
100 if (r) {
101 DSSERR("Failed to attach overlay\n");
102 return r;
103 }
104
105 r = mgr->apply(mgr);
106 if (r)
107 return r;
108 }
109
110 return size;
111}
112
113static ssize_t overlay_input_size_show(struct omap_overlay *ovl, char *buf)
114{
115 return snprintf(buf, PAGE_SIZE, "%d,%d\n",
116 ovl->info.width, ovl->info.height);
117}
118
119static ssize_t overlay_screen_width_show(struct omap_overlay *ovl, char *buf)
120{
121 return snprintf(buf, PAGE_SIZE, "%d\n", ovl->info.screen_width);
122}
123
124static ssize_t overlay_position_show(struct omap_overlay *ovl, char *buf)
125{
126 return snprintf(buf, PAGE_SIZE, "%d,%d\n",
127 ovl->info.pos_x, ovl->info.pos_y);
128}
129
130static ssize_t overlay_position_store(struct omap_overlay *ovl,
131 const char *buf, size_t size)
132{
133 int r;
134 char *last;
135 struct omap_overlay_info info;
136
137 ovl->get_overlay_info(ovl, &info);
138
139 info.pos_x = simple_strtoul(buf, &last, 10);
140 ++last;
141 if (last - buf >= size)
142 return -EINVAL;
143
144 info.pos_y = simple_strtoul(last, &last, 10);
145
146 r = ovl->set_overlay_info(ovl, &info);
147 if (r)
148 return r;
149
150 if (ovl->manager) {
151 r = ovl->manager->apply(ovl->manager);
152 if (r)
153 return r;
154 }
155
156 return size;
157}
158
159static ssize_t overlay_output_size_show(struct omap_overlay *ovl, char *buf)
160{
161 return snprintf(buf, PAGE_SIZE, "%d,%d\n",
162 ovl->info.out_width, ovl->info.out_height);
163}
164
165static ssize_t overlay_output_size_store(struct omap_overlay *ovl,
166 const char *buf, size_t size)
167{
168 int r;
169 char *last;
170 struct omap_overlay_info info;
171
172 ovl->get_overlay_info(ovl, &info);
173
174 info.out_width = simple_strtoul(buf, &last, 10);
175 ++last;
176 if (last - buf >= size)
177 return -EINVAL;
178
179 info.out_height = simple_strtoul(last, &last, 10);
180
181 r = ovl->set_overlay_info(ovl, &info);
182 if (r)
183 return r;
184
185 if (ovl->manager) {
186 r = ovl->manager->apply(ovl->manager);
187 if (r)
188 return r;
189 }
190
191 return size;
192}
193
194static ssize_t overlay_enabled_show(struct omap_overlay *ovl, char *buf)
195{
196 return snprintf(buf, PAGE_SIZE, "%d\n", ovl->info.enabled);
197}
198
199static ssize_t overlay_enabled_store(struct omap_overlay *ovl, const char *buf,
200 size_t size)
201{
202 int r;
203 struct omap_overlay_info info;
204
205 ovl->get_overlay_info(ovl, &info);
206
207 info.enabled = simple_strtoul(buf, NULL, 10);
208
209 r = ovl->set_overlay_info(ovl, &info);
210 if (r)
211 return r;
212
213 if (ovl->manager) {
214 r = ovl->manager->apply(ovl->manager);
215 if (r)
216 return r;
217 }
218
219 return size;
220}
221
222static ssize_t overlay_global_alpha_show(struct omap_overlay *ovl, char *buf)
223{
224 return snprintf(buf, PAGE_SIZE, "%d\n",
225 ovl->info.global_alpha);
226}
227
228static ssize_t overlay_global_alpha_store(struct omap_overlay *ovl,
229 const char *buf, size_t size)
230{
231 int r;
232 struct omap_overlay_info info;
233
234 ovl->get_overlay_info(ovl, &info);
235
236 /* Video1 plane does not support global alpha
237 * to always make it 255 completely opaque
238 */
239 if (ovl->id == OMAP_DSS_VIDEO1)
240 info.global_alpha = 255;
241 else
242 info.global_alpha = simple_strtoul(buf, NULL, 10);
243
244 r = ovl->set_overlay_info(ovl, &info);
245 if (r)
246 return r;
247
248 if (ovl->manager) {
249 r = ovl->manager->apply(ovl->manager);
250 if (r)
251 return r;
252 }
253
254 return size;
255}
256
257struct overlay_attribute {
258 struct attribute attr;
259 ssize_t (*show)(struct omap_overlay *, char *);
260 ssize_t (*store)(struct omap_overlay *, const char *, size_t);
261};
262
263#define OVERLAY_ATTR(_name, _mode, _show, _store) \
264 struct overlay_attribute overlay_attr_##_name = \
265 __ATTR(_name, _mode, _show, _store)
266
267static OVERLAY_ATTR(name, S_IRUGO, overlay_name_show, NULL);
268static OVERLAY_ATTR(manager, S_IRUGO|S_IWUSR,
269 overlay_manager_show, overlay_manager_store);
270static OVERLAY_ATTR(input_size, S_IRUGO, overlay_input_size_show, NULL);
271static OVERLAY_ATTR(screen_width, S_IRUGO, overlay_screen_width_show, NULL);
272static OVERLAY_ATTR(position, S_IRUGO|S_IWUSR,
273 overlay_position_show, overlay_position_store);
274static OVERLAY_ATTR(output_size, S_IRUGO|S_IWUSR,
275 overlay_output_size_show, overlay_output_size_store);
276static OVERLAY_ATTR(enabled, S_IRUGO|S_IWUSR,
277 overlay_enabled_show, overlay_enabled_store);
278static OVERLAY_ATTR(global_alpha, S_IRUGO|S_IWUSR,
279 overlay_global_alpha_show, overlay_global_alpha_store);
280
281static struct attribute *overlay_sysfs_attrs[] = {
282 &overlay_attr_name.attr,
283 &overlay_attr_manager.attr,
284 &overlay_attr_input_size.attr,
285 &overlay_attr_screen_width.attr,
286 &overlay_attr_position.attr,
287 &overlay_attr_output_size.attr,
288 &overlay_attr_enabled.attr,
289 &overlay_attr_global_alpha.attr,
290 NULL
291};
292
293static ssize_t overlay_attr_show(struct kobject *kobj, struct attribute *attr,
294 char *buf)
295{
296 struct omap_overlay *overlay;
297 struct overlay_attribute *overlay_attr;
298
299 overlay = container_of(kobj, struct omap_overlay, kobj);
300 overlay_attr = container_of(attr, struct overlay_attribute, attr);
301
302 if (!overlay_attr->show)
303 return -ENOENT;
304
305 return overlay_attr->show(overlay, buf);
306}
307
308static ssize_t overlay_attr_store(struct kobject *kobj, struct attribute *attr,
309 const char *buf, size_t size)
310{
311 struct omap_overlay *overlay;
312 struct overlay_attribute *overlay_attr;
313
314 overlay = container_of(kobj, struct omap_overlay, kobj);
315 overlay_attr = container_of(attr, struct overlay_attribute, attr);
316
317 if (!overlay_attr->store)
318 return -ENOENT;
319
320 return overlay_attr->store(overlay, buf, size);
321}
322
323static struct sysfs_ops overlay_sysfs_ops = {
324 .show = overlay_attr_show,
325 .store = overlay_attr_store,
326};
327
328static struct kobj_type overlay_ktype = {
329 .sysfs_ops = &overlay_sysfs_ops,
330 .default_attrs = overlay_sysfs_attrs,
331};
332
333/* Check if overlay parameters are compatible with display */
334int dss_check_overlay(struct omap_overlay *ovl, struct omap_dss_device *dssdev)
335{
336 struct omap_overlay_info *info;
337 u16 outw, outh;
338 u16 dw, dh;
339
340 if (!dssdev)
341 return 0;
342
343 if (!ovl->info.enabled)
344 return 0;
345
346 info = &ovl->info;
347
348 if (info->paddr == 0) {
349 DSSDBG("check_overlay failed: paddr 0\n");
350 return -EINVAL;
351 }
352
353 dssdev->get_resolution(dssdev, &dw, &dh);
354
355 DSSDBG("check_overlay %d: (%d,%d %dx%d -> %dx%d) disp (%dx%d)\n",
356 ovl->id,
357 info->pos_x, info->pos_y,
358 info->width, info->height,
359 info->out_width, info->out_height,
360 dw, dh);
361
362 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
363 outw = info->width;
364 outh = info->height;
365 } else {
366 if (info->out_width == 0)
367 outw = info->width;
368 else
369 outw = info->out_width;
370
371 if (info->out_height == 0)
372 outh = info->height;
373 else
374 outh = info->out_height;
375 }
376
377 if (dw < info->pos_x + outw) {
378 DSSDBG("check_overlay failed 1: %d < %d + %d\n",
379 dw, info->pos_x, outw);
380 return -EINVAL;
381 }
382
383 if (dh < info->pos_y + outh) {
384 DSSDBG("check_overlay failed 2: %d < %d + %d\n",
385 dh, info->pos_y, outh);
386 return -EINVAL;
387 }
388
389 if ((ovl->supported_modes & info->color_mode) == 0) {
390 DSSERR("overlay doesn't support mode %d\n", info->color_mode);
391 return -EINVAL;
392 }
393
394 return 0;
395}
396
397static int dss_ovl_set_overlay_info(struct omap_overlay *ovl,
398 struct omap_overlay_info *info)
399{
400 int r;
401 struct omap_overlay_info old_info;
402
403 old_info = ovl->info;
404 ovl->info = *info;
405
406 if (ovl->manager) {
407 r = dss_check_overlay(ovl, ovl->manager->device);
408 if (r) {
409 ovl->info = old_info;
410 return r;
411 }
412 }
413
414 ovl->info_dirty = true;
415
416 return 0;
417}
418
419static void dss_ovl_get_overlay_info(struct omap_overlay *ovl,
420 struct omap_overlay_info *info)
421{
422 *info = ovl->info;
423}
424
425static int dss_ovl_wait_for_go(struct omap_overlay *ovl)
426{
427 return dss_mgr_wait_for_go_ovl(ovl);
428}
429
430static int omap_dss_set_manager(struct omap_overlay *ovl,
431 struct omap_overlay_manager *mgr)
432{
433 if (!mgr)
434 return -EINVAL;
435
436 if (ovl->manager) {
437 DSSERR("overlay '%s' already has a manager '%s'\n",
438 ovl->name, ovl->manager->name);
439 return -EINVAL;
440 }
441
442 if (ovl->info.enabled) {
443 DSSERR("overlay has to be disabled to change the manager\n");
444 return -EINVAL;
445 }
446
447 ovl->manager = mgr;
448
449 dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1);
450 /* XXX: on manual update display, in auto update mode, a bug happens
451 * here. When an overlay is first enabled on LCD, then it's disabled,
452 * and the manager is changed to TV, we sometimes get SYNC_LOST_DIGIT
453 * errors. Waiting before changing the channel_out fixes it. I'm
454 * guessing that the overlay is still somehow being used for the LCD,
455 * but I don't understand how or why. */
456 msleep(40);
457 dispc_set_channel_out(ovl->id, mgr->id);
458 dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1);
459
460 return 0;
461}
462
463static int omap_dss_unset_manager(struct omap_overlay *ovl)
464{
465 int r;
466
467 if (!ovl->manager) {
468 DSSERR("failed to detach overlay: manager not set\n");
469 return -EINVAL;
470 }
471
472 if (ovl->info.enabled) {
473 DSSERR("overlay has to be disabled to unset the manager\n");
474 return -EINVAL;
475 }
476
477 r = ovl->wait_for_go(ovl);
478 if (r)
479 return r;
480
481 ovl->manager = NULL;
482
483 return 0;
484}
485
486int omap_dss_get_num_overlays(void)
487{
488 return num_overlays;
489}
490EXPORT_SYMBOL(omap_dss_get_num_overlays);
491
492struct omap_overlay *omap_dss_get_overlay(int num)
493{
494 int i = 0;
495 struct omap_overlay *ovl;
496
497 list_for_each_entry(ovl, &overlay_list, list) {
498 if (i++ == num)
499 return ovl;
500 }
501
502 return NULL;
503}
504EXPORT_SYMBOL(omap_dss_get_overlay);
505
506static void omap_dss_add_overlay(struct omap_overlay *overlay)
507{
508 ++num_overlays;
509 list_add_tail(&overlay->list, &overlay_list);
510}
511
512static struct omap_overlay *dispc_overlays[3];
513
514void dss_overlay_setup_dispc_manager(struct omap_overlay_manager *mgr)
515{
516 mgr->num_overlays = 3;
517 mgr->overlays = dispc_overlays;
518}
519
520#ifdef L4_EXAMPLE
521static struct omap_overlay *l4_overlays[1];
522void dss_overlay_setup_l4_manager(struct omap_overlay_manager *mgr)
523{
524 mgr->num_overlays = 1;
525 mgr->overlays = l4_overlays;
526}
527#endif
528
529void dss_init_overlays(struct platform_device *pdev)
530{
531 int i, r;
532
533 INIT_LIST_HEAD(&overlay_list);
534
535 num_overlays = 0;
536
537 for (i = 0; i < 3; ++i) {
538 struct omap_overlay *ovl;
539 ovl = kzalloc(sizeof(*ovl), GFP_KERNEL);
540
541 BUG_ON(ovl == NULL);
542
543 switch (i) {
544 case 0:
545 ovl->name = "gfx";
546 ovl->id = OMAP_DSS_GFX;
547 ovl->supported_modes = cpu_is_omap34xx() ?
548 OMAP_DSS_COLOR_GFX_OMAP3 :
549 OMAP_DSS_COLOR_GFX_OMAP2;
550 ovl->caps = OMAP_DSS_OVL_CAP_DISPC;
551 ovl->info.global_alpha = 255;
552 break;
553 case 1:
554 ovl->name = "vid1";
555 ovl->id = OMAP_DSS_VIDEO1;
556 ovl->supported_modes = cpu_is_omap34xx() ?
557 OMAP_DSS_COLOR_VID1_OMAP3 :
558 OMAP_DSS_COLOR_VID_OMAP2;
559 ovl->caps = OMAP_DSS_OVL_CAP_SCALE |
560 OMAP_DSS_OVL_CAP_DISPC;
561 ovl->info.global_alpha = 255;
562 break;
563 case 2:
564 ovl->name = "vid2";
565 ovl->id = OMAP_DSS_VIDEO2;
566 ovl->supported_modes = cpu_is_omap34xx() ?
567 OMAP_DSS_COLOR_VID2_OMAP3 :
568 OMAP_DSS_COLOR_VID_OMAP2;
569 ovl->caps = OMAP_DSS_OVL_CAP_SCALE |
570 OMAP_DSS_OVL_CAP_DISPC;
571 ovl->info.global_alpha = 255;
572 break;
573 }
574
575 ovl->set_manager = &omap_dss_set_manager;
576 ovl->unset_manager = &omap_dss_unset_manager;
577 ovl->set_overlay_info = &dss_ovl_set_overlay_info;
578 ovl->get_overlay_info = &dss_ovl_get_overlay_info;
579 ovl->wait_for_go = &dss_ovl_wait_for_go;
580
581 omap_dss_add_overlay(ovl);
582
583 r = kobject_init_and_add(&ovl->kobj, &overlay_ktype,
584 &pdev->dev.kobj, "overlay%d", i);
585
586 if (r) {
587 DSSERR("failed to create sysfs file\n");
588 continue;
589 }
590
591 dispc_overlays[i] = ovl;
592 }
593
594#ifdef L4_EXAMPLE
595 {
596 struct omap_overlay *ovl;
597 ovl = kzalloc(sizeof(*ovl), GFP_KERNEL);
598
599 BUG_ON(ovl == NULL);
600
601 ovl->name = "l4";
602 ovl->supported_modes = OMAP_DSS_COLOR_RGB24U;
603
604 ovl->set_manager = &omap_dss_set_manager;
605 ovl->unset_manager = &omap_dss_unset_manager;
606 ovl->set_overlay_info = &dss_ovl_set_overlay_info;
607 ovl->get_overlay_info = &dss_ovl_get_overlay_info;
608
609 omap_dss_add_overlay(ovl);
610
611 r = kobject_init_and_add(&ovl->kobj, &overlay_ktype,
612 &pdev->dev.kobj, "overlayl4");
613
614 if (r)
615 DSSERR("failed to create sysfs file\n");
616
617 l4_overlays[0] = ovl;
618 }
619#endif
620}
621
622/* connect overlays to the new device, if not already connected. if force
623 * selected, connect always. */
624void dss_recheck_connections(struct omap_dss_device *dssdev, bool force)
625{
626 int i;
627 struct omap_overlay_manager *lcd_mgr;
628 struct omap_overlay_manager *tv_mgr;
629 struct omap_overlay_manager *mgr = NULL;
630
631 lcd_mgr = omap_dss_get_overlay_manager(OMAP_DSS_OVL_MGR_LCD);
632 tv_mgr = omap_dss_get_overlay_manager(OMAP_DSS_OVL_MGR_TV);
633
634 if (dssdev->type != OMAP_DISPLAY_TYPE_VENC) {
635 if (!lcd_mgr->device || force) {
636 if (lcd_mgr->device)
637 lcd_mgr->unset_device(lcd_mgr);
638 lcd_mgr->set_device(lcd_mgr, dssdev);
639 mgr = lcd_mgr;
640 }
641 }
642
643 if (dssdev->type == OMAP_DISPLAY_TYPE_VENC) {
644 if (!tv_mgr->device || force) {
645 if (tv_mgr->device)
646 tv_mgr->unset_device(tv_mgr);
647 tv_mgr->set_device(tv_mgr, dssdev);
648 mgr = tv_mgr;
649 }
650 }
651
652 if (mgr) {
653 for (i = 0; i < 3; i++) {
654 struct omap_overlay *ovl;
655 ovl = omap_dss_get_overlay(i);
656 if (!ovl->manager || force) {
657 if (ovl->manager)
658 omap_dss_unset_manager(ovl);
659 omap_dss_set_manager(ovl, mgr);
660 }
661 }
662 }
663}
664
665void dss_uninit_overlays(struct platform_device *pdev)
666{
667 struct omap_overlay *ovl;
668
669 while (!list_empty(&overlay_list)) {
670 ovl = list_first_entry(&overlay_list,
671 struct omap_overlay, list);
672 list_del(&ovl->list);
673 kobject_del(&ovl->kobj);
674 kobject_put(&ovl->kobj);
675 kfree(ovl);
676 }
677
678 num_overlays = 0;
679}
680
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-29 14:20:55 -0500