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https://github.com/edk2-porting/linux-next.git
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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
/*
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* Generic Platform Camera Driver Header
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*
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* Copyright (C) 2008 Magnus Damm
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __SOC_CAMERA_H__
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#define __SOC_CAMERA_H__
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#include <linux/videodev2.h>
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#include <media/soc_camera.h>
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struct device;
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struct soc_camera_platform_info {
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const char *format_name;
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unsigned long format_depth;
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struct v4l2_mbus_framefmt format;
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unsigned long bus_param;
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struct device *dev;
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int (*set_capture)(struct soc_camera_platform_info *info, int enable);
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};
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static inline void soc_camera_platform_release(struct platform_device **pdev)
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{
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*pdev = NULL;
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}
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static inline int soc_camera_platform_add(const struct soc_camera_link *icl,
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struct device *dev,
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struct platform_device **pdev,
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struct soc_camera_link *plink,
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void (*release)(struct device *dev),
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int id)
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{
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struct soc_camera_platform_info *info = plink->priv;
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int ret;
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if (icl != plink)
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return -ENODEV;
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if (*pdev)
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return -EBUSY;
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*pdev = platform_device_alloc("soc_camera_platform", id);
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if (!*pdev)
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return -ENOMEM;
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info->dev = dev;
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(*pdev)->dev.platform_data = info;
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(*pdev)->dev.release = release;
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ret = platform_device_add(*pdev);
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if (ret < 0) {
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platform_device_put(*pdev);
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*pdev = NULL;
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info->dev = NULL;
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}
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return ret;
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}
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static inline void soc_camera_platform_del(const struct soc_camera_link *icl,
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struct platform_device *pdev,
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const struct soc_camera_link *plink)
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{
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if (icl != plink || !pdev)
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return;
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platform_device_unregister(pdev);
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}
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#endif /* __SOC_CAMERA_H__ */
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