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 #include <media/v4l2-mediabus.h>
  17
  18 struct device;
  19
  20 struct soc_camera_platform_info {
  21         const char *format_name;
  22         unsigned long format_depth;
  23         struct v4l2_mbus_framefmt format;
  24         unsigned long mbus_param;
  25         enum v4l2_mbus_type mbus_type;
  26         struct soc_camera_device *icd;
  27         int (*set_capture)(struct soc_camera_platform_info *info, int enable);
  28 };
  29
  30 static inline void soc_camera_platform_release(struct platform_device **pdev)
  31 {
  32         *pdev = NULL;
  33 }
  34
  35 static inline int soc_camera_platform_add(struct soc_camera_device *icd,
  36                                           struct platform_device **pdev,
  37                                           struct soc_camera_link *plink,
  38                                           void (*release)(struct device *dev),
  39                                           int id)
  40 {
  41         struct soc_camera_subdev_desc *ssdd =
  42                 (struct soc_camera_subdev_desc *)plink;
  43         struct soc_camera_platform_info *info = ssdd->drv_priv;
  44         int ret;
  45
  46         if (&icd->sdesc->subdev_desc != ssdd)
  47                 return -ENODEV;
  48
  49         if (*pdev)
  50                 return -EBUSY;
  51
  52         *pdev = platform_device_alloc("soc_camera_platform", id);
  53         if (!*pdev)
  54                 return -ENOMEM;
  55
  56         info->icd = icd;
  57
  58         (*pdev)->dev.platform_data = info;
  59         (*pdev)->dev.release = release;
  60
  61         ret = platform_device_add(*pdev);
  62         if (ret < 0) {
  63                 platform_device_put(*pdev);
  64                 *pdev = NULL;
  65                 info->icd = NULL;
  66         }
  67
  68         return ret;
  69 }
  70
  71 static inline void soc_camera_platform_del(const struct soc_camera_device *icd,
  72                                            struct platform_device *pdev,
  73                                            const struct soc_camera_link *plink)
  74 {
  75         const struct soc_camera_subdev_desc *ssdd =
  76                 (const struct soc_camera_subdev_desc *)plink;
  77         if (&icd->sdesc->subdev_desc != ssdd || !pdev)
  78                 return;
  79
  80         platform_device_unregister(pdev);
  81 }
  82
  83 #endif /* __SOC_CAMERA_H__ */