680 lines
15 KiB
C
680 lines
15 KiB
C
/*
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* linux/drivers/video/omap2/dss/overlay.c
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*
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* Copyright (C) 2009 Nokia Corporation
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* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
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*
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* Some code and ideas taken from drivers/video/omap/ driver
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* by Imre Deak.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published by
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* the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#define DSS_SUBSYS_NAME "OVERLAY"
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/sysfs.h>
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#include <linux/kobject.h>
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#include <linux/platform_device.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <video/omapdss.h>
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#include <plat/cpu.h>
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#include "dss.h"
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#include "dss_features.h"
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static int num_overlays;
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static struct omap_overlay *overlays;
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static ssize_t overlay_name_show(struct omap_overlay *ovl, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%s\n", ovl->name);
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}
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static ssize_t overlay_manager_show(struct omap_overlay *ovl, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%s\n",
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ovl->manager ? ovl->manager->name : "<none>");
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}
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static ssize_t overlay_manager_store(struct omap_overlay *ovl, const char *buf,
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size_t size)
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{
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int i, r;
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struct omap_overlay_manager *mgr = NULL;
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struct omap_overlay_manager *old_mgr;
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int len = size;
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if (buf[size-1] == '\n')
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--len;
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if (len > 0) {
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for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
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mgr = omap_dss_get_overlay_manager(i);
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if (sysfs_streq(buf, mgr->name))
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break;
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mgr = NULL;
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}
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}
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if (len > 0 && mgr == NULL)
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return -EINVAL;
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if (mgr)
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DSSDBG("manager %s found\n", mgr->name);
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if (mgr == ovl->manager)
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return size;
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old_mgr = ovl->manager;
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r = dispc_runtime_get();
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if (r)
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return r;
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/* detach old manager */
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if (old_mgr) {
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r = ovl->unset_manager(ovl);
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if (r) {
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DSSERR("detach failed\n");
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goto err;
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}
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r = old_mgr->apply(old_mgr);
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if (r)
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goto err;
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}
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if (mgr) {
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r = ovl->set_manager(ovl, mgr);
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if (r) {
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DSSERR("Failed to attach overlay\n");
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goto err;
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}
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r = mgr->apply(mgr);
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if (r)
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goto err;
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}
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dispc_runtime_put();
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return size;
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err:
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dispc_runtime_put();
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return r;
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}
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static ssize_t overlay_input_size_show(struct omap_overlay *ovl, char *buf)
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{
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struct omap_overlay_info info;
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ovl->get_overlay_info(ovl, &info);
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return snprintf(buf, PAGE_SIZE, "%d,%d\n",
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info.width, info.height);
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}
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static ssize_t overlay_screen_width_show(struct omap_overlay *ovl, char *buf)
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{
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struct omap_overlay_info info;
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ovl->get_overlay_info(ovl, &info);
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return snprintf(buf, PAGE_SIZE, "%d\n", info.screen_width);
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}
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static ssize_t overlay_position_show(struct omap_overlay *ovl, char *buf)
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{
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struct omap_overlay_info info;
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ovl->get_overlay_info(ovl, &info);
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return snprintf(buf, PAGE_SIZE, "%d,%d\n",
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info.pos_x, info.pos_y);
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}
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static ssize_t overlay_position_store(struct omap_overlay *ovl,
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const char *buf, size_t size)
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{
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int r;
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char *last;
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struct omap_overlay_info info;
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ovl->get_overlay_info(ovl, &info);
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info.pos_x = simple_strtoul(buf, &last, 10);
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++last;
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if (last - buf >= size)
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return -EINVAL;
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info.pos_y = simple_strtoul(last, &last, 10);
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r = ovl->set_overlay_info(ovl, &info);
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if (r)
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return r;
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if (ovl->manager) {
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r = ovl->manager->apply(ovl->manager);
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if (r)
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return r;
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}
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return size;
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}
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static ssize_t overlay_output_size_show(struct omap_overlay *ovl, char *buf)
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{
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struct omap_overlay_info info;
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ovl->get_overlay_info(ovl, &info);
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return snprintf(buf, PAGE_SIZE, "%d,%d\n",
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info.out_width, info.out_height);
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}
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static ssize_t overlay_output_size_store(struct omap_overlay *ovl,
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const char *buf, size_t size)
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{
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int r;
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char *last;
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struct omap_overlay_info info;
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ovl->get_overlay_info(ovl, &info);
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info.out_width = simple_strtoul(buf, &last, 10);
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++last;
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if (last - buf >= size)
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return -EINVAL;
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info.out_height = simple_strtoul(last, &last, 10);
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r = ovl->set_overlay_info(ovl, &info);
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if (r)
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return r;
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if (ovl->manager) {
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r = ovl->manager->apply(ovl->manager);
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if (r)
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return r;
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}
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return size;
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}
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static ssize_t overlay_enabled_show(struct omap_overlay *ovl, char *buf)
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{
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return snprintf(buf, PAGE_SIZE, "%d\n", ovl->is_enabled(ovl));
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}
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static ssize_t overlay_enabled_store(struct omap_overlay *ovl, const char *buf,
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size_t size)
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{
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int r;
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bool enable;
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r = strtobool(buf, &enable);
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if (r)
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return r;
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if (enable)
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r = ovl->enable(ovl);
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else
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r = ovl->disable(ovl);
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if (r)
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return r;
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return size;
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}
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static ssize_t overlay_global_alpha_show(struct omap_overlay *ovl, char *buf)
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{
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struct omap_overlay_info info;
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ovl->get_overlay_info(ovl, &info);
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return snprintf(buf, PAGE_SIZE, "%d\n",
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info.global_alpha);
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}
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static ssize_t overlay_global_alpha_store(struct omap_overlay *ovl,
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const char *buf, size_t size)
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{
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int r;
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u8 alpha;
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struct omap_overlay_info info;
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if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
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return -ENODEV;
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r = kstrtou8(buf, 0, &alpha);
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if (r)
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return r;
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ovl->get_overlay_info(ovl, &info);
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info.global_alpha = alpha;
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r = ovl->set_overlay_info(ovl, &info);
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if (r)
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return r;
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if (ovl->manager) {
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r = ovl->manager->apply(ovl->manager);
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if (r)
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return r;
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}
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return size;
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}
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static ssize_t overlay_pre_mult_alpha_show(struct omap_overlay *ovl,
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char *buf)
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{
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struct omap_overlay_info info;
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ovl->get_overlay_info(ovl, &info);
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return snprintf(buf, PAGE_SIZE, "%d\n",
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info.pre_mult_alpha);
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}
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static ssize_t overlay_pre_mult_alpha_store(struct omap_overlay *ovl,
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const char *buf, size_t size)
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{
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int r;
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u8 alpha;
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struct omap_overlay_info info;
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if ((ovl->caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
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return -ENODEV;
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r = kstrtou8(buf, 0, &alpha);
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if (r)
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return r;
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ovl->get_overlay_info(ovl, &info);
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info.pre_mult_alpha = alpha;
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r = ovl->set_overlay_info(ovl, &info);
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if (r)
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return r;
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if (ovl->manager) {
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r = ovl->manager->apply(ovl->manager);
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if (r)
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return r;
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}
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return size;
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}
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static ssize_t overlay_zorder_show(struct omap_overlay *ovl, char *buf)
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{
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struct omap_overlay_info info;
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ovl->get_overlay_info(ovl, &info);
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return snprintf(buf, PAGE_SIZE, "%d\n", info.zorder);
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}
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static ssize_t overlay_zorder_store(struct omap_overlay *ovl,
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const char *buf, size_t size)
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{
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int r;
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u8 zorder;
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struct omap_overlay_info info;
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if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
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return -ENODEV;
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r = kstrtou8(buf, 0, &zorder);
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if (r)
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return r;
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ovl->get_overlay_info(ovl, &info);
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info.zorder = zorder;
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r = ovl->set_overlay_info(ovl, &info);
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if (r)
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return r;
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if (ovl->manager) {
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r = ovl->manager->apply(ovl->manager);
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if (r)
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return r;
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}
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return size;
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}
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struct overlay_attribute {
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struct attribute attr;
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ssize_t (*show)(struct omap_overlay *, char *);
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ssize_t (*store)(struct omap_overlay *, const char *, size_t);
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};
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#define OVERLAY_ATTR(_name, _mode, _show, _store) \
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struct overlay_attribute overlay_attr_##_name = \
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__ATTR(_name, _mode, _show, _store)
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static OVERLAY_ATTR(name, S_IRUGO, overlay_name_show, NULL);
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static OVERLAY_ATTR(manager, S_IRUGO|S_IWUSR,
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overlay_manager_show, overlay_manager_store);
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static OVERLAY_ATTR(input_size, S_IRUGO, overlay_input_size_show, NULL);
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static OVERLAY_ATTR(screen_width, S_IRUGO, overlay_screen_width_show, NULL);
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static OVERLAY_ATTR(position, S_IRUGO|S_IWUSR,
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overlay_position_show, overlay_position_store);
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static OVERLAY_ATTR(output_size, S_IRUGO|S_IWUSR,
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overlay_output_size_show, overlay_output_size_store);
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static OVERLAY_ATTR(enabled, S_IRUGO|S_IWUSR,
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overlay_enabled_show, overlay_enabled_store);
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static OVERLAY_ATTR(global_alpha, S_IRUGO|S_IWUSR,
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overlay_global_alpha_show, overlay_global_alpha_store);
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static OVERLAY_ATTR(pre_mult_alpha, S_IRUGO|S_IWUSR,
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overlay_pre_mult_alpha_show,
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overlay_pre_mult_alpha_store);
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static OVERLAY_ATTR(zorder, S_IRUGO|S_IWUSR,
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overlay_zorder_show, overlay_zorder_store);
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static struct attribute *overlay_sysfs_attrs[] = {
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&overlay_attr_name.attr,
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&overlay_attr_manager.attr,
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&overlay_attr_input_size.attr,
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&overlay_attr_screen_width.attr,
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&overlay_attr_position.attr,
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&overlay_attr_output_size.attr,
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&overlay_attr_enabled.attr,
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&overlay_attr_global_alpha.attr,
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&overlay_attr_pre_mult_alpha.attr,
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&overlay_attr_zorder.attr,
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NULL
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};
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static ssize_t overlay_attr_show(struct kobject *kobj, struct attribute *attr,
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char *buf)
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{
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struct omap_overlay *overlay;
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struct overlay_attribute *overlay_attr;
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overlay = container_of(kobj, struct omap_overlay, kobj);
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overlay_attr = container_of(attr, struct overlay_attribute, attr);
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if (!overlay_attr->show)
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return -ENOENT;
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return overlay_attr->show(overlay, buf);
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}
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static ssize_t overlay_attr_store(struct kobject *kobj, struct attribute *attr,
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const char *buf, size_t size)
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{
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struct omap_overlay *overlay;
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struct overlay_attribute *overlay_attr;
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overlay = container_of(kobj, struct omap_overlay, kobj);
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overlay_attr = container_of(attr, struct overlay_attribute, attr);
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if (!overlay_attr->store)
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return -ENOENT;
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return overlay_attr->store(overlay, buf, size);
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}
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static const struct sysfs_ops overlay_sysfs_ops = {
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.show = overlay_attr_show,
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.store = overlay_attr_store,
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};
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static struct kobj_type overlay_ktype = {
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.sysfs_ops = &overlay_sysfs_ops,
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.default_attrs = overlay_sysfs_attrs,
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};
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int omap_dss_get_num_overlays(void)
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{
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return num_overlays;
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}
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EXPORT_SYMBOL(omap_dss_get_num_overlays);
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struct omap_overlay *omap_dss_get_overlay(int num)
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{
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if (num >= num_overlays)
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return NULL;
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return &overlays[num];
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}
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EXPORT_SYMBOL(omap_dss_get_overlay);
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void dss_init_overlays(struct platform_device *pdev)
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{
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int i, r;
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num_overlays = dss_feat_get_num_ovls();
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overlays = kzalloc(sizeof(struct omap_overlay) * num_overlays,
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GFP_KERNEL);
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BUG_ON(overlays == NULL);
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for (i = 0; i < num_overlays; ++i) {
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struct omap_overlay *ovl = &overlays[i];
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switch (i) {
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case 0:
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ovl->name = "gfx";
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ovl->id = OMAP_DSS_GFX;
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break;
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case 1:
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ovl->name = "vid1";
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ovl->id = OMAP_DSS_VIDEO1;
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break;
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case 2:
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ovl->name = "vid2";
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ovl->id = OMAP_DSS_VIDEO2;
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break;
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case 3:
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ovl->name = "vid3";
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ovl->id = OMAP_DSS_VIDEO3;
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break;
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}
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ovl->is_enabled = &dss_ovl_is_enabled;
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ovl->enable = &dss_ovl_enable;
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ovl->disable = &dss_ovl_disable;
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ovl->set_manager = &dss_ovl_set_manager;
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ovl->unset_manager = &dss_ovl_unset_manager;
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ovl->set_overlay_info = &dss_ovl_set_info;
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ovl->get_overlay_info = &dss_ovl_get_info;
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ovl->wait_for_go = &dss_mgr_wait_for_go_ovl;
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ovl->caps = dss_feat_get_overlay_caps(ovl->id);
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ovl->supported_modes =
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dss_feat_get_supported_color_modes(ovl->id);
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r = kobject_init_and_add(&ovl->kobj, &overlay_ktype,
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&pdev->dev.kobj, "overlay%d", i);
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if (r)
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DSSERR("failed to create sysfs file\n");
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}
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}
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/* connect overlays to the new device, if not already connected. if force
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* selected, connect always. */
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void dss_recheck_connections(struct omap_dss_device *dssdev, bool force)
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{
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int i;
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struct omap_overlay_manager *lcd_mgr;
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struct omap_overlay_manager *tv_mgr;
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struct omap_overlay_manager *lcd2_mgr = NULL;
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struct omap_overlay_manager *mgr = NULL;
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lcd_mgr = omap_dss_get_overlay_manager(OMAP_DSS_CHANNEL_LCD);
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tv_mgr = omap_dss_get_overlay_manager(OMAP_DSS_CHANNEL_DIGIT);
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if (dss_has_feature(FEAT_MGR_LCD2))
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lcd2_mgr = omap_dss_get_overlay_manager(OMAP_DSS_CHANNEL_LCD2);
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if (dssdev->channel == OMAP_DSS_CHANNEL_LCD2) {
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if (!lcd2_mgr->device || force) {
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if (lcd2_mgr->device)
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lcd2_mgr->unset_device(lcd2_mgr);
|
|
lcd2_mgr->set_device(lcd2_mgr, dssdev);
|
|
mgr = lcd2_mgr;
|
|
}
|
|
} else if (dssdev->type != OMAP_DISPLAY_TYPE_VENC
|
|
&& dssdev->type != OMAP_DISPLAY_TYPE_HDMI) {
|
|
if (!lcd_mgr->device || force) {
|
|
if (lcd_mgr->device)
|
|
lcd_mgr->unset_device(lcd_mgr);
|
|
lcd_mgr->set_device(lcd_mgr, dssdev);
|
|
mgr = lcd_mgr;
|
|
}
|
|
}
|
|
|
|
if (dssdev->type == OMAP_DISPLAY_TYPE_VENC
|
|
|| dssdev->type == OMAP_DISPLAY_TYPE_HDMI) {
|
|
if (!tv_mgr->device || force) {
|
|
if (tv_mgr->device)
|
|
tv_mgr->unset_device(tv_mgr);
|
|
tv_mgr->set_device(tv_mgr, dssdev);
|
|
mgr = tv_mgr;
|
|
}
|
|
}
|
|
|
|
if (mgr) {
|
|
dispc_runtime_get();
|
|
|
|
for (i = 0; i < dss_feat_get_num_ovls(); i++) {
|
|
struct omap_overlay *ovl;
|
|
ovl = omap_dss_get_overlay(i);
|
|
if (!ovl->manager || force) {
|
|
if (ovl->manager)
|
|
ovl->unset_manager(ovl);
|
|
ovl->set_manager(ovl, mgr);
|
|
}
|
|
}
|
|
|
|
dispc_runtime_put();
|
|
}
|
|
}
|
|
|
|
void dss_uninit_overlays(struct platform_device *pdev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < num_overlays; ++i) {
|
|
struct omap_overlay *ovl = &overlays[i];
|
|
|
|
kobject_del(&ovl->kobj);
|
|
kobject_put(&ovl->kobj);
|
|
}
|
|
|
|
kfree(overlays);
|
|
overlays = NULL;
|
|
num_overlays = 0;
|
|
}
|
|
|
|
int dss_ovl_simple_check(struct omap_overlay *ovl,
|
|
const struct omap_overlay_info *info)
|
|
{
|
|
if (info->paddr == 0) {
|
|
DSSERR("check_overlay: paddr cannot be 0\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
|
|
if (info->out_width != 0 && info->width != info->out_width) {
|
|
DSSERR("check_overlay: overlay %d doesn't support "
|
|
"scaling\n", ovl->id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (info->out_height != 0 && info->height != info->out_height) {
|
|
DSSERR("check_overlay: overlay %d doesn't support "
|
|
"scaling\n", ovl->id);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
if ((ovl->supported_modes & info->color_mode) == 0) {
|
|
DSSERR("check_overlay: overlay %d doesn't support mode %d\n",
|
|
ovl->id, info->color_mode);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (info->zorder >= omap_dss_get_num_overlays()) {
|
|
DSSERR("check_overlay: zorder %d too high\n", info->zorder);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (dss_feat_rotation_type_supported(info->rotation_type) == 0) {
|
|
DSSERR("check_overlay: rotation type %d not supported\n",
|
|
info->rotation_type);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int dss_ovl_check(struct omap_overlay *ovl, struct omap_overlay_info *info,
|
|
const struct omap_video_timings *mgr_timings)
|
|
{
|
|
u16 outw, outh;
|
|
u16 dw, dh;
|
|
|
|
dw = mgr_timings->x_res;
|
|
dh = mgr_timings->y_res;
|
|
|
|
if ((ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
|
|
outw = info->width;
|
|
outh = info->height;
|
|
} else {
|
|
if (info->out_width == 0)
|
|
outw = info->width;
|
|
else
|
|
outw = info->out_width;
|
|
|
|
if (info->out_height == 0)
|
|
outh = info->height;
|
|
else
|
|
outh = info->out_height;
|
|
}
|
|
|
|
if (dw < info->pos_x + outw) {
|
|
DSSERR("overlay %d horizontally not inside the display area "
|
|
"(%d + %d >= %d)\n",
|
|
ovl->id, info->pos_x, outw, dw);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (dh < info->pos_y + outh) {
|
|
DSSERR("overlay %d vertically not inside the display area "
|
|
"(%d + %d >= %d)\n",
|
|
ovl->id, info->pos_y, outh, dh);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|