include/media/soc_camera_platform.h

   1 /*
   2  * Generic Platform Camera Driver Header
   3  *
   4  * Copyright (C) 2008 Magnus Damm
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #ifndef __SOC_CAMERA_H__
  12 #define __SOC_CAMERA_H__
  13
  14 #include <linux/videodev2.h>
  15 #include <media/soc_camera.h>
  16
  17 struct device;
  18
  19 struct soc_camera_platform_info {
  20         const char *format_name;
  21         unsigned long format_depth;
  22         struct v4l2_mbus_framefmt format;
  23         unsigned long bus_param;
  24         struct device *dev;
  25         int (*set_capture)(struct soc_camera_platform_info *info, int enable);
  26 };
  27
  28 static inline void soc_camera_platform_release(struct platform_device **pdev)
  29 {
  30         *pdev = NULL;
  31 }
  32
  33 static inline int soc_camera_platform_add(const struct soc_camera_link *icl,
  34                                           struct device *dev,
  35                                           struct platform_device **pdev,
  36                                           struct soc_camera_link *plink,
  37                                           void (*release)(struct device *dev),
  38                                           int id)
  39 {
  40         struct soc_camera_platform_info *info = plink->priv;
  41         int ret;
  42
  43         if (icl != plink)
  44                 return -ENODEV;
  45
  46         if (*pdev)
  47                 return -EBUSY;
  48
  49         *pdev = platform_device_alloc("soc_camera_platform", id);
  50         if (!*pdev)
  51                 return -ENOMEM;
  52
  53         info->dev = dev;
  54
  55         (*pdev)->dev.platform_data = info;
  56         (*pdev)->dev.release = release;
  57
  58         ret = platform_device_add(*pdev);
  59         if (ret < 0) {
  60                 platform_device_put(*pdev);
  61                 *pdev = NULL;
  62                 info->dev = NULL;
  63         }
  64
  65         return ret;
  66 }
  67
  68 static inline void soc_camera_platform_del(const struct soc_camera_link *icl,
  69                                            struct platform_device *pdev,
  70                                            const struct soc_camera_link *plink)
  71 {
  72         if (icl != plink || !pdev)
  73                 return;
  74
  75         platform_device_unregister(pdev);
  76 }
  77
  78 #endif /* __SOC_CAMERA_H__ */