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/*
* Copyright (C) 2012 Texas Instruments Ltd
* Author: Archit Taneja <archit@ti.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/of.h>
#include "omapdss.h"
static LIST_HEAD(output_list);
static DEFINE_MUTEX(output_lock);
int omapdss_output_set_device(struct omap_dss_device *out,
struct omap_dss_device *dssdev)
{
int r;
mutex_lock(&output_lock);
if (out->dst) {
dev_err(out->dev,
"output already has device %s connected to it\n",
out->dst->name);
r = -EINVAL;
goto err;
}
if (out->output_type != dssdev->type) {
dev_err(out->dev, "output type and display type don't match\n");
r = -EINVAL;
goto err;
}
out->dst = dssdev;
dssdev->src = out;
mutex_unlock(&output_lock);
return 0;
err:
mutex_unlock(&output_lock);
return r;
}
EXPORT_SYMBOL(omapdss_output_set_device);
int omapdss_output_unset_device(struct omap_dss_device *out)
{
int r;
mutex_lock(&output_lock);
if (!out->dst) {
dev_err(out->dev,
"output doesn't have a device connected to it\n");
r = -EINVAL;
goto err;
}
if (out->dst->state != OMAP_DSS_DISPLAY_DISABLED) {
dev_err(out->dev,
"device %s is not disabled, cannot unset device\n",
out->dst->name);
r = -EINVAL;
goto err;
}
out->dst->src = NULL;
out->dst = NULL;
mutex_unlock(&output_lock);
return 0;
err:
mutex_unlock(&output_lock);
return r;
}
EXPORT_SYMBOL(omapdss_output_unset_device);
int omapdss_register_output(struct omap_dss_device *out)
{
list_add_tail(&out->list, &output_list);
return 0;
}
EXPORT_SYMBOL(omapdss_register_output);
void omapdss_unregister_output(struct omap_dss_device *out)
{
list_del(&out->list);
}
EXPORT_SYMBOL(omapdss_unregister_output);
bool omapdss_component_is_output(struct device_node *node)
{
struct omap_dss_device *out;
list_for_each_entry(out, &output_list, list) {
if (out->dev->of_node == node)
return true;
}
return false;
}
EXPORT_SYMBOL(omapdss_component_is_output);
struct omap_dss_device *omap_dss_get_output(enum omap_dss_output_id id)
{
struct omap_dss_device *out;
list_for_each_entry(out, &output_list, list) {
if (out->id == id)
return out;
}
return NULL;
}
EXPORT_SYMBOL(omap_dss_get_output);
struct omap_dss_device *omap_dss_find_output_by_port_node(struct device_node *port)
{
struct device_node *src_node;
struct omap_dss_device *out;
u32 reg;
src_node = dss_of_port_get_parent_device(port);
if (!src_node)
return NULL;
reg = dss_of_port_get_port_number(port);
list_for_each_entry(out, &output_list, list) {
if (out->dev->of_node == src_node && out->port_num == reg) {
of_node_put(src_node);
return omap_dss_get_device(out);
}
}
of_node_put(src_node);
return NULL;
}
EXPORT_SYMBOL(omap_dss_find_output_by_port_node);
struct omap_dss_device *omapdss_find_output_from_display(struct omap_dss_device *dssdev)
{
while (dssdev->src)
dssdev = dssdev->src;
if (dssdev->id != 0)
return omap_dss_get_device(dssdev);
return NULL;
}
EXPORT_SYMBOL(omapdss_find_output_from_display);
static const struct dss_mgr_ops *dss_mgr_ops;
int dss_install_mgr_ops(const struct dss_mgr_ops *mgr_ops)
{
if (dss_mgr_ops)
return -EBUSY;
dss_mgr_ops = mgr_ops;
return 0;
}
EXPORT_SYMBOL(dss_install_mgr_ops);
void dss_uninstall_mgr_ops(void)
{
dss_mgr_ops = NULL;
}
EXPORT_SYMBOL(dss_uninstall_mgr_ops);
int dss_mgr_connect(enum omap_channel channel,
struct omap_dss_device *dst)
{
return dss_mgr_ops->connect(channel, dst);
}
EXPORT_SYMBOL(dss_mgr_connect);
void dss_mgr_disconnect(enum omap_channel channel,
struct omap_dss_device *dst)
{
dss_mgr_ops->disconnect(channel, dst);
}
EXPORT_SYMBOL(dss_mgr_disconnect);
void dss_mgr_set_timings(enum omap_channel channel, const struct videomode *vm)
{
dss_mgr_ops->set_timings(channel, vm);
}
EXPORT_SYMBOL(dss_mgr_set_timings);
void dss_mgr_set_lcd_config(enum omap_channel channel,
const struct dss_lcd_mgr_config *config)
{
dss_mgr_ops->set_lcd_config(channel, config);
}
EXPORT_SYMBOL(dss_mgr_set_lcd_config);
int dss_mgr_enable(enum omap_channel channel)
{
return dss_mgr_ops->enable(channel);
}
EXPORT_SYMBOL(dss_mgr_enable);
void dss_mgr_disable(enum omap_channel channel)
{
dss_mgr_ops->disable(channel);
}
EXPORT_SYMBOL(dss_mgr_disable);
void dss_mgr_start_update(enum omap_channel channel)
{
dss_mgr_ops->start_update(channel);
}
EXPORT_SYMBOL(dss_mgr_start_update);
int dss_mgr_register_framedone_handler(enum omap_channel channel,
void (*handler)(void *), void *data)
{
return dss_mgr_ops->register_framedone_handler(channel, handler, data);
}
EXPORT_SYMBOL(dss_mgr_register_framedone_handler);
void dss_mgr_unregister_framedone_handler(enum omap_channel channel,
void (*handler)(void *), void *data)
{
dss_mgr_ops->unregister_framedone_handler(channel, handler, data);
}
EXPORT_SYMBOL(dss_mgr_unregister_framedone_handler);
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