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/*
* Generic Platform Camera Driver
*
* Copyright (C) 2008 Magnus Damm
* Based on mt9m001 driver,
* Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de>
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/soc_camera.h>
#include <media/soc_camera_platform.h>
struct soc_camera_platform_priv {
struct soc_camera_platform_info *info;
struct soc_camera_device icd;
struct soc_camera_data_format format;
};
static struct soc_camera_platform_info *
soc_camera_platform_get_info(struct soc_camera_device *icd)
{
struct soc_camera_platform_priv *priv;
priv = container_of(icd, struct soc_camera_platform_priv, icd);
return priv->info;
}
static int soc_camera_platform_init(struct soc_camera_device *icd)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
if (p->power)
p->power(1);
return 0;
}
static int soc_camera_platform_release(struct soc_camera_device *icd)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
if (p->power)
p->power(0);
return 0;
}
static int soc_camera_platform_start_capture(struct soc_camera_device *icd)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
return p->set_capture(p, 1);
}
static int soc_camera_platform_stop_capture(struct soc_camera_device *icd)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
return p->set_capture(p, 0);
}
static int soc_camera_platform_set_bus_param(struct soc_camera_device *icd,
unsigned long flags)
{
return 0;
}
static unsigned long
soc_camera_platform_query_bus_param(struct soc_camera_device *icd)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
return p->bus_param;
}
static int soc_camera_platform_set_fmt(struct soc_camera_device *icd,
__u32 pixfmt, struct v4l2_rect *rect)
{
return 0;
}
static int soc_camera_platform_try_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
{
struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
f->fmt.pix.width = p->format.width;
f->fmt.pix.height = p->format.height;
return 0;
}
static int soc_camera_platform_video_probe(struct soc_camera_device *icd)
{
struct soc_camera_platform_priv *priv;
priv = container_of(icd, struct soc_camera_platform_priv, icd);
priv->format.name = priv->info->format_name;
priv->format.depth = priv->info->format_depth;
priv->format.fourcc = priv->info->format.pixelformat;
priv->format.colorspace = priv->info->format.colorspace;
icd->formats = &priv->format;
icd->num_formats = 1;
return soc_camera_video_start(icd);
}
static void soc_camera_platform_video_remove(struct soc_camera_device *icd)
{
soc_camera_video_stop(icd);
}
static struct soc_camera_ops soc_camera_platform_ops = {
.owner = THIS_MODULE,
.probe = soc_camera_platform_video_probe,
.remove = soc_camera_platform_video_remove,
.init = soc_camera_platform_init,
.release = soc_camera_platform_release,
.start_capture = soc_camera_platform_start_capture,
.stop_capture = soc_camera_platform_stop_capture,
.set_fmt = soc_camera_platform_set_fmt,
.try_fmt = soc_camera_platform_try_fmt,
.set_bus_param = soc_camera_platform_set_bus_param,
.query_bus_param = soc_camera_platform_query_bus_param,
};
static int soc_camera_platform_probe(struct platform_device *pdev)
{
struct soc_camera_platform_priv *priv;
struct soc_camera_platform_info *p;
struct soc_camera_device *icd;
int ret;
p = pdev->dev.platform_data;
if (!p)
return -EINVAL;
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
priv->info = p;
platform_set_drvdata(pdev, priv);
icd = &priv->icd;
icd->ops = &soc_camera_platform_ops;
icd->control = &pdev->dev;
icd->width_min = 0;
icd->width_max = priv->info->format.width;
icd->height_min = 0;
icd->height_max = priv->info->format.height;
icd->y_skip_top = 0;
icd->iface = priv->info->iface;
ret = soc_camera_device_register(icd);
if (ret)
kfree(priv);
return ret;
}
static int soc_camera_platform_remove(struct platform_device *pdev)
{
struct soc_camera_platform_priv *priv = platform_get_drvdata(pdev);
soc_camera_device_unregister(&priv->icd);
kfree(priv);
return 0;
}
static struct platform_driver soc_camera_platform_driver = {
.driver = {
.name = "soc_camera_platform",
},
.probe = soc_camera_platform_probe,
.remove = soc_camera_platform_remove,
};
static int __init soc_camera_platform_module_init(void)
{
return platform_driver_register(&soc_camera_platform_driver);
}
static void __exit soc_camera_platform_module_exit(void)
{
platform_driver_unregister(&soc_camera_platform_driver);
}
module_init(soc_camera_platform_module_init);
module_exit(soc_camera_platform_module_exit);
MODULE_DESCRIPTION("SoC Camera Platform driver");
MODULE_AUTHOR("Magnus Damm");
MODULE_LICENSE("GPL v2");
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