181 lines
3.9 KiB
C
181 lines
3.9 KiB
C
/*
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* Copyright (C) 2012 Texas Instruments Ltd
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* Author: Archit Taneja <archit@ti.com>
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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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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <video/omapdss.h>
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#include "dss.h"
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static LIST_HEAD(output_list);
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static DEFINE_MUTEX(output_lock);
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int omapdss_output_set_device(struct omap_dss_output *out,
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struct omap_dss_device *dssdev)
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{
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int r;
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mutex_lock(&output_lock);
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if (out->device) {
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DSSERR("output already has device %s connected to it\n",
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out->device->name);
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r = -EINVAL;
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goto err;
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}
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if (out->type != dssdev->type) {
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DSSERR("output type and display type don't match\n");
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r = -EINVAL;
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goto err;
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}
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out->device = dssdev;
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dssdev->output = out;
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mutex_unlock(&output_lock);
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return 0;
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err:
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mutex_unlock(&output_lock);
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return r;
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}
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EXPORT_SYMBOL(omapdss_output_set_device);
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int omapdss_output_unset_device(struct omap_dss_output *out)
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{
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int r;
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mutex_lock(&output_lock);
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if (!out->device) {
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DSSERR("output doesn't have a device connected to it\n");
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r = -EINVAL;
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goto err;
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}
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if (out->device->state != OMAP_DSS_DISPLAY_DISABLED) {
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DSSERR("device %s is not disabled, cannot unset device\n",
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out->device->name);
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r = -EINVAL;
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goto err;
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}
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out->device->output = NULL;
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out->device = NULL;
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mutex_unlock(&output_lock);
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return 0;
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err:
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mutex_unlock(&output_lock);
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return r;
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}
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EXPORT_SYMBOL(omapdss_output_unset_device);
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void dss_register_output(struct omap_dss_output *out)
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{
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list_add_tail(&out->list, &output_list);
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}
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void dss_unregister_output(struct omap_dss_output *out)
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{
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list_del(&out->list);
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}
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struct omap_dss_output *omap_dss_get_output(enum omap_dss_output_id id)
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{
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struct omap_dss_output *out;
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list_for_each_entry(out, &output_list, list) {
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if (out->id == id)
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return out;
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}
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return NULL;
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}
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static const struct dss_mgr_ops *dss_mgr_ops;
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int dss_install_mgr_ops(const struct dss_mgr_ops *mgr_ops)
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{
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if (dss_mgr_ops)
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return -EBUSY;
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dss_mgr_ops = mgr_ops;
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return 0;
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}
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EXPORT_SYMBOL(dss_install_mgr_ops);
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void dss_uninstall_mgr_ops(void)
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{
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dss_mgr_ops = NULL;
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}
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EXPORT_SYMBOL(dss_uninstall_mgr_ops);
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void dss_mgr_set_timings(struct omap_overlay_manager *mgr,
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const struct omap_video_timings *timings)
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{
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dss_mgr_ops->set_timings(mgr, timings);
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}
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EXPORT_SYMBOL(dss_mgr_set_timings);
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void dss_mgr_set_lcd_config(struct omap_overlay_manager *mgr,
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const struct dss_lcd_mgr_config *config)
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{
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dss_mgr_ops->set_lcd_config(mgr, config);
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}
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EXPORT_SYMBOL(dss_mgr_set_lcd_config);
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int dss_mgr_enable(struct omap_overlay_manager *mgr)
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{
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return dss_mgr_ops->enable(mgr);
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}
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EXPORT_SYMBOL(dss_mgr_enable);
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void dss_mgr_disable(struct omap_overlay_manager *mgr)
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{
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dss_mgr_ops->disable(mgr);
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}
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EXPORT_SYMBOL(dss_mgr_disable);
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void dss_mgr_start_update(struct omap_overlay_manager *mgr)
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{
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dss_mgr_ops->start_update(mgr);
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}
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EXPORT_SYMBOL(dss_mgr_start_update);
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int dss_mgr_register_framedone_handler(struct omap_overlay_manager *mgr,
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void (*handler)(void *), void *data)
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{
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return dss_mgr_ops->register_framedone_handler(mgr, handler, data);
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}
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EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
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void dss_mgr_unregister_framedone_handler(struct omap_overlay_manager *mgr,
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void (*handler)(void *), void *data)
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{
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dss_mgr_ops->unregister_framedone_handler(mgr, handler, data);
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}
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EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);
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