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/*
* Copyright (C) 2009 Nokia Corporation
* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
*
* VENC panel driver
*
* 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/err.h>
#include <linux/io.h>
#include <linux/mutex.h>
#include <linux/module.h>
#include <video/omapdss.h>
#include "dss.h"
static struct {
struct mutex lock;
} venc_panel;
static ssize_t display_output_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct omap_dss_device *dssdev = to_dss_device(dev);
const char *ret;
switch (dssdev->phy.venc.type) {
case OMAP_DSS_VENC_TYPE_COMPOSITE:
ret = "composite";
break;
case OMAP_DSS_VENC_TYPE_SVIDEO:
ret = "svideo";
break;
default:
return -EINVAL;
}
return snprintf(buf, PAGE_SIZE, "%s\n", ret);
}
static ssize_t display_output_type_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t size)
{
struct omap_dss_device *dssdev = to_dss_device(dev);
enum omap_dss_venc_type new_type;
if (sysfs_streq("composite", buf))
new_type = OMAP_DSS_VENC_TYPE_COMPOSITE;
else if (sysfs_streq("svideo", buf))
new_type = OMAP_DSS_VENC_TYPE_SVIDEO;
else
return -EINVAL;
mutex_lock(&venc_panel.lock);
if (dssdev->phy.venc.type != new_type) {
dssdev->phy.venc.type = new_type;
omapdss_venc_set_type(dssdev, new_type);
if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) {
omapdss_venc_display_disable(dssdev);
omapdss_venc_display_enable(dssdev);
}
}
mutex_unlock(&venc_panel.lock);
return size;
}
static DEVICE_ATTR(output_type, S_IRUGO | S_IWUSR,
display_output_type_show, display_output_type_store);
static int venc_panel_probe(struct omap_dss_device *dssdev)
{
/* set default timings to PAL */
const struct omap_video_timings default_timings = {
.x_res = 720,
.y_res = 574,
.pixel_clock = 13500,
.hsw = 64,
.hfp = 12,
.hbp = 68,
.vsw = 5,
.vfp = 5,
.vbp = 41,
.vsync_level = OMAPDSS_SIG_ACTIVE_HIGH,
.hsync_level = OMAPDSS_SIG_ACTIVE_HIGH,
.interlace = true,
};
mutex_init(&venc_panel.lock);
dssdev->panel.timings = default_timings;
return device_create_file(dssdev->dev, &dev_attr_output_type);
}
static void venc_panel_remove(struct omap_dss_device *dssdev)
{
device_remove_file(dssdev->dev, &dev_attr_output_type);
}
static int venc_panel_enable(struct omap_dss_device *dssdev)
{
int r;
dev_dbg(dssdev->dev, "venc_panel_enable\n");
mutex_lock(&venc_panel.lock);
if (dssdev->state != OMAP_DSS_DISPLAY_DISABLED) {
r = -EINVAL;
goto err;
}
omapdss_venc_set_timings(dssdev, &dssdev->panel.timings);
omapdss_venc_set_type(dssdev, dssdev->phy.venc.type);
omapdss_venc_invert_vid_out_polarity(dssdev,
dssdev->phy.venc.invert_polarity);
r = omapdss_venc_display_enable(dssdev);
if (r)
goto err;
dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;
mutex_unlock(&venc_panel.lock);
return 0;
err:
mutex_unlock(&venc_panel.lock);
return r;
}
static void venc_panel_disable(struct omap_dss_device *dssdev)
{
dev_dbg(dssdev->dev, "venc_panel_disable\n");
mutex_lock(&venc_panel.lock);
if (dssdev->state == OMAP_DSS_DISPLAY_DISABLED)
goto end;
omapdss_venc_display_disable(dssdev);
dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
end:
mutex_unlock(&venc_panel.lock);
}
static void venc_panel_set_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings)
{
dev_dbg(dssdev->dev, "venc_panel_set_timings\n");
mutex_lock(&venc_panel.lock);
omapdss_venc_set_timings(dssdev, timings);
dssdev->panel.timings = *timings;
mutex_unlock(&venc_panel.lock);
}
static int venc_panel_check_timings(struct omap_dss_device *dssdev,
struct omap_video_timings *timings)
{
dev_dbg(dssdev->dev, "venc_panel_check_timings\n");
return omapdss_venc_check_timings(dssdev, timings);
}
static u32 venc_panel_get_wss(struct omap_dss_device *dssdev)
{
dev_dbg(dssdev->dev, "venc_panel_get_wss\n");
return omapdss_venc_get_wss(dssdev);
}
static int venc_panel_set_wss(struct omap_dss_device *dssdev, u32 wss)
{
dev_dbg(dssdev->dev, "venc_panel_set_wss\n");
return omapdss_venc_set_wss(dssdev, wss);
}
static struct omap_dss_driver venc_driver = {
.probe = venc_panel_probe,
.remove = venc_panel_remove,
.enable = venc_panel_enable,
.disable = venc_panel_disable,
.get_resolution = omapdss_default_get_resolution,
.get_recommended_bpp = omapdss_default_get_recommended_bpp,
.set_timings = venc_panel_set_timings,
.check_timings = venc_panel_check_timings,
.get_wss = venc_panel_get_wss,
.set_wss = venc_panel_set_wss,
.driver = {
.name = "venc",
.owner = THIS_MODULE,
},
};
int venc_panel_init(void)
{
return omap_dss_register_driver(&venc_driver);
}
void venc_panel_exit(void)
{
omap_dss_unregister_driver(&venc_driver);
}
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