2 * linux/drivers/video/omap2/dss/overlay.c
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
7 * Some code and ideas taken from drivers/video/omap/ driver
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
23 #define DSS_SUBSYS_NAME "OVERLAY"
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 #include <linux/slab.h>
34 #include <video/omapdss.h>
38 #include "dss_features.h"
40 static int num_overlays;
41 static struct omap_overlay *overlays;
43 static ssize_t overlay_name_show(struct omap_overlay *ovl, char *buf)
45 return snprintf(buf, PAGE_SIZE, "%s\n", ovl->name);
48 static ssize_t overlay_manager_show(struct omap_overlay *ovl, char *buf)
50 return snprintf(buf, PAGE_SIZE, "%s\n",
51 ovl->manager ? ovl->manager->name : "<none>");
54 static ssize_t overlay_manager_store(struct omap_overlay *ovl, const char *buf,
58 struct omap_overlay_manager *mgr = NULL;
59 struct omap_overlay_manager *old_mgr;
62 if (buf[size-1] == '\n')
66 for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
67 mgr = omap_dss_get_overlay_manager(i);
69 if (sysfs_streq(buf, mgr->name))
76 if (len > 0 && mgr == NULL)
80 DSSDBG("manager %s found\n", mgr->name);
82 if (mgr == ovl->manager)
85 old_mgr = ovl->manager;
87 r = dispc_runtime_get();
91 /* detach old manager */
93 r = ovl->unset_manager(ovl);
95 DSSERR("detach failed\n");
99 r = old_mgr->apply(old_mgr);
105 r = ovl->set_manager(ovl, mgr);
107 DSSERR("Failed to attach overlay\n");
125 static ssize_t overlay_input_size_show(struct omap_overlay *ovl, char *buf)
127 struct omap_overlay_info info;
129 ovl->get_overlay_info(ovl, &info);
131 return snprintf(buf, PAGE_SIZE, "%d,%d\n",
132 info.width, info.height);
135 static ssize_t overlay_screen_width_show(struct omap_overlay *ovl, char *buf)
137 struct omap_overlay_info info;
139 ovl->get_overlay_info(ovl, &info);
141 return snprintf(buf, PAGE_SIZE, "%d\n", info.screen_width);
144 static ssize_t overlay_position_show(struct omap_overlay *ovl, char *buf)
146 struct omap_overlay_info info;
148 ovl->get_overlay_info(ovl, &info);
150 return snprintf(buf, PAGE_SIZE, "%d,%d\n",
151 info.pos_x, info.pos_y);
154 static ssize_t overlay_position_store(struct omap_overlay *ovl,
155 const char *buf, size_t size)
159 struct omap_overlay_info info;
161 ovl->get_overlay_info(ovl, &info);
163 info.pos_x = simple_strtoul(buf, &last, 10);
165 if (last - buf >= size)
168 info.pos_y = simple_strtoul(last, &last, 10);
170 r = ovl->set_overlay_info(ovl, &info);
175 r = ovl->manager->apply(ovl->manager);
183 static ssize_t overlay_output_size_show(struct omap_overlay *ovl, char *buf)
185 struct omap_overlay_info info;
187 ovl->get_overlay_info(ovl, &info);
189 return snprintf(buf, PAGE_SIZE, "%d,%d\n",
190 info.out_width, info.out_height);
193 static ssize_t overlay_output_size_store(struct omap_overlay *ovl,
194 const char *buf, size_t size)
198 struct omap_overlay_info info;
200 ovl->get_overlay_info(ovl, &info);
202 info.out_width = simple_strtoul(buf, &last, 10);
204 if (last - buf >= size)
207 info.out_height = simple_strtoul(last, &last, 10);
209 r = ovl->set_overlay_info(ovl, &info);
214 r = ovl->manager->apply(ovl->manager);
222 static ssize_t overlay_enabled_show(struct omap_overlay *ovl, char *buf)
224 return snprintf(buf, PAGE_SIZE, "%d\n", ovl->is_enabled(ovl));
227 static ssize_t overlay_enabled_store(struct omap_overlay *ovl, const char *buf,
233 r = strtobool(buf, &enable);
238 r = ovl->enable(ovl);
240 r = ovl->disable(ovl);
248 static ssize_t overlay_global_alpha_show(struct omap_overlay *ovl, char *buf)
250 struct omap_overlay_info info;
252 ovl->get_overlay_info(ovl, &info);
254 return snprintf(buf, PAGE_SIZE, "%d\n",
258 static ssize_t overlay_global_alpha_store(struct omap_overlay *ovl,
259 const char *buf, size_t size)
263 struct omap_overlay_info info;
265 if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
268 r = kstrtou8(buf, 0, &alpha);
272 ovl->get_overlay_info(ovl, &info);
274 info.global_alpha = alpha;
276 r = ovl->set_overlay_info(ovl, &info);
281 r = ovl->manager->apply(ovl->manager);
289 static ssize_t overlay_pre_mult_alpha_show(struct omap_overlay *ovl,
292 struct omap_overlay_info info;
294 ovl->get_overlay_info(ovl, &info);
296 return snprintf(buf, PAGE_SIZE, "%d\n",
297 info.pre_mult_alpha);
300 static ssize_t overlay_pre_mult_alpha_store(struct omap_overlay *ovl,
301 const char *buf, size_t size)
305 struct omap_overlay_info info;
307 if ((ovl->caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
310 r = kstrtou8(buf, 0, &alpha);
314 ovl->get_overlay_info(ovl, &info);
316 info.pre_mult_alpha = alpha;
318 r = ovl->set_overlay_info(ovl, &info);
323 r = ovl->manager->apply(ovl->manager);
331 static ssize_t overlay_zorder_show(struct omap_overlay *ovl, char *buf)
333 struct omap_overlay_info info;
335 ovl->get_overlay_info(ovl, &info);
337 return snprintf(buf, PAGE_SIZE, "%d\n", info.zorder);
340 static ssize_t overlay_zorder_store(struct omap_overlay *ovl,
341 const char *buf, size_t size)
345 struct omap_overlay_info info;
347 if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
350 r = kstrtou8(buf, 0, &zorder);
354 ovl->get_overlay_info(ovl, &info);
356 info.zorder = zorder;
358 r = ovl->set_overlay_info(ovl, &info);
363 r = ovl->manager->apply(ovl->manager);
371 struct overlay_attribute {
372 struct attribute attr;
373 ssize_t (*show)(struct omap_overlay *, char *);
374 ssize_t (*store)(struct omap_overlay *, const char *, size_t);
377 #define OVERLAY_ATTR(_name, _mode, _show, _store) \
378 struct overlay_attribute overlay_attr_##_name = \
379 __ATTR(_name, _mode, _show, _store)
381 static OVERLAY_ATTR(name, S_IRUGO, overlay_name_show, NULL);
382 static OVERLAY_ATTR(manager, S_IRUGO|S_IWUSR,
383 overlay_manager_show, overlay_manager_store);
384 static OVERLAY_ATTR(input_size, S_IRUGO, overlay_input_size_show, NULL);
385 static OVERLAY_ATTR(screen_width, S_IRUGO, overlay_screen_width_show, NULL);
386 static OVERLAY_ATTR(position, S_IRUGO|S_IWUSR,
387 overlay_position_show, overlay_position_store);
388 static OVERLAY_ATTR(output_size, S_IRUGO|S_IWUSR,
389 overlay_output_size_show, overlay_output_size_store);
390 static OVERLAY_ATTR(enabled, S_IRUGO|S_IWUSR,
391 overlay_enabled_show, overlay_enabled_store);
392 static OVERLAY_ATTR(global_alpha, S_IRUGO|S_IWUSR,
393 overlay_global_alpha_show, overlay_global_alpha_store);
394 static OVERLAY_ATTR(pre_mult_alpha, S_IRUGO|S_IWUSR,
395 overlay_pre_mult_alpha_show,
396 overlay_pre_mult_alpha_store);
397 static OVERLAY_ATTR(zorder, S_IRUGO|S_IWUSR,
398 overlay_zorder_show, overlay_zorder_store);
400 static struct attribute *overlay_sysfs_attrs[] = {
401 &overlay_attr_name.attr,
402 &overlay_attr_manager.attr,
403 &overlay_attr_input_size.attr,
404 &overlay_attr_screen_width.attr,
405 &overlay_attr_position.attr,
406 &overlay_attr_output_size.attr,
407 &overlay_attr_enabled.attr,
408 &overlay_attr_global_alpha.attr,
409 &overlay_attr_pre_mult_alpha.attr,
410 &overlay_attr_zorder.attr,
414 static ssize_t overlay_attr_show(struct kobject *kobj, struct attribute *attr,
417 struct omap_overlay *overlay;
418 struct overlay_attribute *overlay_attr;
420 overlay = container_of(kobj, struct omap_overlay, kobj);
421 overlay_attr = container_of(attr, struct overlay_attribute, attr);
423 if (!overlay_attr->show)
426 return overlay_attr->show(overlay, buf);
429 static ssize_t overlay_attr_store(struct kobject *kobj, struct attribute *attr,
430 const char *buf, size_t size)
432 struct omap_overlay *overlay;
433 struct overlay_attribute *overlay_attr;
435 overlay = container_of(kobj, struct omap_overlay, kobj);
436 overlay_attr = container_of(attr, struct overlay_attribute, attr);
438 if (!overlay_attr->store)
441 return overlay_attr->store(overlay, buf, size);
444 static const struct sysfs_ops overlay_sysfs_ops = {
445 .show = overlay_attr_show,
446 .store = overlay_attr_store,
449 static struct kobj_type overlay_ktype = {
450 .sysfs_ops = &overlay_sysfs_ops,
451 .default_attrs = overlay_sysfs_attrs,
454 int omap_dss_get_num_overlays(void)
458 EXPORT_SYMBOL(omap_dss_get_num_overlays);
460 struct omap_overlay *omap_dss_get_overlay(int num)
462 if (num >= num_overlays)
465 return &overlays[num];
467 EXPORT_SYMBOL(omap_dss_get_overlay);
469 void dss_init_overlays(struct platform_device *pdev)
473 num_overlays = dss_feat_get_num_ovls();
475 overlays = kzalloc(sizeof(struct omap_overlay) * num_overlays,
478 BUG_ON(overlays == NULL);
480 for (i = 0; i < num_overlays; ++i) {
481 struct omap_overlay *ovl = &overlays[i];
486 ovl->id = OMAP_DSS_GFX;
490 ovl->id = OMAP_DSS_VIDEO1;
494 ovl->id = OMAP_DSS_VIDEO2;
498 ovl->id = OMAP_DSS_VIDEO3;
502 ovl->is_enabled = &dss_ovl_is_enabled;
503 ovl->enable = &dss_ovl_enable;
504 ovl->disable = &dss_ovl_disable;
505 ovl->set_manager = &dss_ovl_set_manager;
506 ovl->unset_manager = &dss_ovl_unset_manager;
507 ovl->set_overlay_info = &dss_ovl_set_info;
508 ovl->get_overlay_info = &dss_ovl_get_info;
509 ovl->wait_for_go = &dss_mgr_wait_for_go_ovl;
511 ovl->caps = dss_feat_get_overlay_caps(ovl->id);
512 ovl->supported_modes =
513 dss_feat_get_supported_color_modes(ovl->id);
515 r = kobject_init_and_add(&ovl->kobj, &overlay_ktype,
516 &pdev->dev.kobj, "overlay%d", i);
519 DSSERR("failed to create sysfs file\n");
523 /* connect overlays to the new device, if not already connected. if force
524 * selected, connect always. */
525 void dss_recheck_connections(struct omap_dss_device *dssdev, bool force)
528 struct omap_overlay_manager *lcd_mgr;
529 struct omap_overlay_manager *tv_mgr;
530 struct omap_overlay_manager *lcd2_mgr = NULL;
531 struct omap_overlay_manager *mgr = NULL;
533 lcd_mgr = omap_dss_get_overlay_manager(OMAP_DSS_OVL_MGR_LCD);
534 tv_mgr = omap_dss_get_overlay_manager(OMAP_DSS_OVL_MGR_TV);
535 if (dss_has_feature(FEAT_MGR_LCD2))
536 lcd2_mgr = omap_dss_get_overlay_manager(OMAP_DSS_OVL_MGR_LCD2);
538 if (dssdev->channel == OMAP_DSS_CHANNEL_LCD2) {
539 if (!lcd2_mgr->device || force) {
540 if (lcd2_mgr->device)
541 lcd2_mgr->unset_device(lcd2_mgr);
542 lcd2_mgr->set_device(lcd2_mgr, dssdev);
545 } else if (dssdev->type != OMAP_DISPLAY_TYPE_VENC
546 && dssdev->type != OMAP_DISPLAY_TYPE_HDMI) {
547 if (!lcd_mgr->device || force) {
549 lcd_mgr->unset_device(lcd_mgr);
550 lcd_mgr->set_device(lcd_mgr, dssdev);
555 if (dssdev->type == OMAP_DISPLAY_TYPE_VENC
556 || dssdev->type == OMAP_DISPLAY_TYPE_HDMI) {
557 if (!tv_mgr->device || force) {
559 tv_mgr->unset_device(tv_mgr);
560 tv_mgr->set_device(tv_mgr, dssdev);
568 for (i = 0; i < dss_feat_get_num_ovls(); i++) {
569 struct omap_overlay *ovl;
570 ovl = omap_dss_get_overlay(i);
571 if (!ovl->manager || force) {
573 ovl->unset_manager(ovl);
574 ovl->set_manager(ovl, mgr);
582 void dss_uninit_overlays(struct platform_device *pdev)
586 for (i = 0; i < num_overlays; ++i) {
587 struct omap_overlay *ovl = &overlays[i];
589 kobject_del(&ovl->kobj);
590 kobject_put(&ovl->kobj);
598 int dss_ovl_simple_check(struct omap_overlay *ovl,
599 const struct omap_overlay_info *info)
601 if (info->paddr == 0) {
602 DSSERR("check_overlay: paddr cannot be 0\n");
606 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
607 if (info->out_width != 0 && info->width != info->out_width) {
608 DSSERR("check_overlay: overlay %d doesn't support "
609 "scaling\n", ovl->id);
613 if (info->out_height != 0 && info->height != info->out_height) {
614 DSSERR("check_overlay: overlay %d doesn't support "
615 "scaling\n", ovl->id);
620 if ((ovl->supported_modes & info->color_mode) == 0) {
621 DSSERR("check_overlay: overlay %d doesn't support mode %d\n",
622 ovl->id, info->color_mode);
626 if (info->zorder >= omap_dss_get_num_overlays()) {
627 DSSERR("check_overlay: zorder %d too high\n", info->zorder);
634 int dss_ovl_check(struct omap_overlay *ovl,
635 struct omap_overlay_info *info, struct omap_dss_device *dssdev)
643 dssdev->driver->get_resolution(dssdev, &dw, &dh);
645 if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
649 if (info->out_width == 0)
652 outw = info->out_width;
654 if (info->out_height == 0)
657 outh = info->out_height;
660 if (dw < info->pos_x + outw) {
661 DSSERR("overlay %d horizontally not inside the display area "
663 ovl->id, info->pos_x, outw, dw);
667 if (dh < info->pos_y + outh) {
668 DSSERR("overlay %d vertically not inside the display area "
670 ovl->id, info->pos_y, outh, dh);