![Axel Lin](/assets/img/avatar_default.png)
This patch converts the drivers in drivers/media/* to use the module_platform_driver() macro which makes the code smaller and a bit simpler. Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Hans Verkuil <hans.verkuil@cisco.com> Cc: "Richard Röjfors" <richard.rojfors@pelagicore.com> Cc: "Matti J. Aaltonen" <matti.j.aaltonen@nokia.com> Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi> Cc: Manjunath Hadli <manjunath.hadli@ti.com> Cc: Muralidharan Karicheri <m-karicheri2@ti.com> Cc: Anatolij Gustschin <agust@denx.de> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Cc: Robert Jarzmik <robert.jarzmik@free.fr> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Daniel Drake <dsd@laptop.org> Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
198 lines
5 KiB
C
198 lines
5 KiB
C
/*
|
|
* 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-subdev.h>
|
|
#include <media/soc_camera.h>
|
|
#include <media/soc_camera_platform.h>
|
|
|
|
struct soc_camera_platform_priv {
|
|
struct v4l2_subdev subdev;
|
|
};
|
|
|
|
static struct soc_camera_platform_priv *get_priv(struct platform_device *pdev)
|
|
{
|
|
struct v4l2_subdev *subdev = platform_get_drvdata(pdev);
|
|
return container_of(subdev, struct soc_camera_platform_priv, subdev);
|
|
}
|
|
|
|
static int soc_camera_platform_s_stream(struct v4l2_subdev *sd, int enable)
|
|
{
|
|
struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
|
|
return p->set_capture(p, enable);
|
|
}
|
|
|
|
static int soc_camera_platform_fill_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_mbus_framefmt *mf)
|
|
{
|
|
struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
|
|
|
|
mf->width = p->format.width;
|
|
mf->height = p->format.height;
|
|
mf->code = p->format.code;
|
|
mf->colorspace = p->format.colorspace;
|
|
mf->field = p->format.field;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct v4l2_subdev_core_ops platform_subdev_core_ops;
|
|
|
|
static int soc_camera_platform_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
|
|
enum v4l2_mbus_pixelcode *code)
|
|
{
|
|
struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
|
|
|
|
if (index)
|
|
return -EINVAL;
|
|
|
|
*code = p->format.code;
|
|
return 0;
|
|
}
|
|
|
|
static int soc_camera_platform_g_crop(struct v4l2_subdev *sd,
|
|
struct v4l2_crop *a)
|
|
{
|
|
struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
|
|
|
|
a->c.left = 0;
|
|
a->c.top = 0;
|
|
a->c.width = p->format.width;
|
|
a->c.height = p->format.height;
|
|
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int soc_camera_platform_cropcap(struct v4l2_subdev *sd,
|
|
struct v4l2_cropcap *a)
|
|
{
|
|
struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
|
|
|
|
a->bounds.left = 0;
|
|
a->bounds.top = 0;
|
|
a->bounds.width = p->format.width;
|
|
a->bounds.height = p->format.height;
|
|
a->defrect = a->bounds;
|
|
a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
a->pixelaspect.numerator = 1;
|
|
a->pixelaspect.denominator = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int soc_camera_platform_g_mbus_config(struct v4l2_subdev *sd,
|
|
struct v4l2_mbus_config *cfg)
|
|
{
|
|
struct soc_camera_platform_info *p = v4l2_get_subdevdata(sd);
|
|
|
|
cfg->flags = p->mbus_param;
|
|
cfg->type = p->mbus_type;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct v4l2_subdev_video_ops platform_subdev_video_ops = {
|
|
.s_stream = soc_camera_platform_s_stream,
|
|
.enum_mbus_fmt = soc_camera_platform_enum_fmt,
|
|
.cropcap = soc_camera_platform_cropcap,
|
|
.g_crop = soc_camera_platform_g_crop,
|
|
.try_mbus_fmt = soc_camera_platform_fill_fmt,
|
|
.g_mbus_fmt = soc_camera_platform_fill_fmt,
|
|
.s_mbus_fmt = soc_camera_platform_fill_fmt,
|
|
.g_mbus_config = soc_camera_platform_g_mbus_config,
|
|
};
|
|
|
|
static struct v4l2_subdev_ops platform_subdev_ops = {
|
|
.core = &platform_subdev_core_ops,
|
|
.video = &platform_subdev_video_ops,
|
|
};
|
|
|
|
static int soc_camera_platform_probe(struct platform_device *pdev)
|
|
{
|
|
struct soc_camera_host *ici;
|
|
struct soc_camera_platform_priv *priv;
|
|
struct soc_camera_platform_info *p = pdev->dev.platform_data;
|
|
struct soc_camera_device *icd;
|
|
int ret;
|
|
|
|
if (!p)
|
|
return -EINVAL;
|
|
|
|
if (!p->icd) {
|
|
dev_err(&pdev->dev,
|
|
"Platform has not set soc_camera_device pointer!\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
priv = kzalloc(sizeof(*priv), GFP_KERNEL);
|
|
if (!priv)
|
|
return -ENOMEM;
|
|
|
|
icd = p->icd;
|
|
|
|
/* soc-camera convention: control's drvdata points to the subdev */
|
|
platform_set_drvdata(pdev, &priv->subdev);
|
|
/* Set the control device reference */
|
|
icd->control = &pdev->dev;
|
|
|
|
ici = to_soc_camera_host(icd->parent);
|
|
|
|
v4l2_subdev_init(&priv->subdev, &platform_subdev_ops);
|
|
v4l2_set_subdevdata(&priv->subdev, p);
|
|
strncpy(priv->subdev.name, dev_name(&pdev->dev), V4L2_SUBDEV_NAME_SIZE);
|
|
|
|
ret = v4l2_device_register_subdev(&ici->v4l2_dev, &priv->subdev);
|
|
if (ret)
|
|
goto evdrs;
|
|
|
|
return ret;
|
|
|
|
evdrs:
|
|
platform_set_drvdata(pdev, NULL);
|
|
kfree(priv);
|
|
return ret;
|
|
}
|
|
|
|
static int soc_camera_platform_remove(struct platform_device *pdev)
|
|
{
|
|
struct soc_camera_platform_priv *priv = get_priv(pdev);
|
|
struct soc_camera_platform_info *p = v4l2_get_subdevdata(&priv->subdev);
|
|
|
|
p->icd->control = NULL;
|
|
v4l2_device_unregister_subdev(&priv->subdev);
|
|
platform_set_drvdata(pdev, NULL);
|
|
kfree(priv);
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver soc_camera_platform_driver = {
|
|
.driver = {
|
|
.name = "soc_camera_platform",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = soc_camera_platform_probe,
|
|
.remove = soc_camera_platform_remove,
|
|
};
|
|
|
|
module_platform_driver(soc_camera_platform_driver);
|
|
|
|
MODULE_DESCRIPTION("SoC Camera Platform driver");
|
|
MODULE_AUTHOR("Magnus Damm");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_ALIAS("platform:soc_camera_platform");
|