446 lines
9.1 KiB
C
446 lines
9.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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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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#define DSS_SUBSYS_NAME "OVERLAY"
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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 <video/omapfb_dss.h>
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#include "dss.h"
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#include "dss_features.h"
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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 dss_overlay_kobj_init(struct omap_overlay *ovl,
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struct platform_device *pdev)
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{
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return kobject_init_and_add(&ovl->kobj, &overlay_ktype,
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&pdev->dev.kobj, "overlay%d", ovl->id);
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}
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void dss_overlay_kobj_uninit(struct omap_overlay *ovl)
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{
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kobject_del(&ovl->kobj);
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kobject_put(&ovl->kobj);
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}
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