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 soc_camera_device *icd;
  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(struct soc_camera_device *icd,
  34                                           struct platform_device **pdev,
  35                                           struct soc_camera_link *plink,
  36                                           void (*release)(struct device *dev),
  37                                           int id)
  38 {
  39         struct soc_camera_platform_info *info = plink->priv;
  40         int ret;
  41
  42         if (icd->link != plink)
  43                 return -ENODEV;
  44
  45         if (*pdev)
  46                 return -EBUSY;
  47
  48         *pdev = platform_device_alloc("soc_camera_platform", id);
  49         if (!*pdev)
  50                 return -ENOMEM;
  51
  52         info->icd = icd;
  53
  54         (*pdev)->dev.platform_data = info;
  55         (*pdev)->dev.release = release;
  56
  57         ret = platform_device_add(*pdev);
  58         if (ret < 0) {
  59                 platform_device_put(*pdev);
  60                 *pdev = NULL;
  61                 info->icd = NULL;
  62         }
  63
  64         return ret;
  65 }
  66
  67 static inline void soc_camera_platform_del(const struct soc_camera_device *icd,
  68                                            struct platform_device *pdev,
  69                                            const struct soc_camera_link *plink)
  70 {
  71         if (icd->link != plink || !pdev)
  72                 return;
  73
  74         platform_device_unregister(pdev);
  75 }
  76
  77 #endif /* __SOC_CAMERA_H__ */