mirror of
https://github.com/torvalds/linux.git
synced 2024-11-17 01:22:07 +00:00
ec0c8d555a
Add helper inline functions to correctly manage dynamic allocation and freeing of platform devices. This avoids the ugly code to nullify device objects. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Magnus Damm <damm@opensource.se> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
/*
|
|
* Generic Platform Camera Driver Header
|
|
*
|
|
* Copyright (C) 2008 Magnus Damm
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef __SOC_CAMERA_H__
|
|
#define __SOC_CAMERA_H__
|
|
|
|
#include <linux/videodev2.h>
|
|
#include <media/soc_camera.h>
|
|
|
|
struct device;
|
|
|
|
struct soc_camera_platform_info {
|
|
const char *format_name;
|
|
unsigned long format_depth;
|
|
struct v4l2_mbus_framefmt format;
|
|
unsigned long bus_param;
|
|
struct device *dev;
|
|
int (*set_capture)(struct soc_camera_platform_info *info, int enable);
|
|
};
|
|
|
|
static inline void soc_camera_platform_release(struct platform_device **pdev)
|
|
{
|
|
*pdev = NULL;
|
|
}
|
|
|
|
static inline int soc_camera_platform_add(const struct soc_camera_link *icl,
|
|
struct device *dev,
|
|
struct platform_device **pdev,
|
|
struct soc_camera_link *plink,
|
|
void (*release)(struct device *dev),
|
|
int id)
|
|
{
|
|
struct soc_camera_platform_info *info = plink->priv;
|
|
int ret;
|
|
|
|
if (icl != plink)
|
|
return -ENODEV;
|
|
|
|
if (*pdev)
|
|
return -EBUSY;
|
|
|
|
*pdev = platform_device_alloc("soc_camera_platform", id);
|
|
if (!*pdev)
|
|
return -ENOMEM;
|
|
|
|
info->dev = dev;
|
|
|
|
(*pdev)->dev.platform_data = info;
|
|
(*pdev)->dev.release = release;
|
|
|
|
ret = platform_device_add(*pdev);
|
|
if (ret < 0) {
|
|
platform_device_put(*pdev);
|
|
*pdev = NULL;
|
|
info->dev = NULL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static inline void soc_camera_platform_del(const struct soc_camera_link *icl,
|
|
struct platform_device *pdev,
|
|
const struct soc_camera_link *plink)
|
|
{
|
|
if (icl != plink || !pdev)
|
|
return;
|
|
|
|
platform_device_unregister(pdev);
|
|
}
|
|
|
|
#endif /* __SOC_CAMERA_H__ */
|