forked from Minki/linux
2864462eaf
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
/*
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*
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* V 4 L 2 D R I V E R H E L P E R A P I
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*
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* Moved from videodev2.h
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*
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* Some commonly needed functions for drivers (v4l2-common.o module)
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*/
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#ifndef _V4L2_IOCTL_H
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#define _V4L2_IOCTL_H
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#include <linux/poll.h>
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#include <linux/fs.h>
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#include <linux/device.h>
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#include <linux/mutex.h>
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#include <linux/compiler.h> /* need __user */
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#ifdef CONFIG_VIDEO_V4L1_COMPAT
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#include <linux/videodev.h>
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#else
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#include <linux/videodev2.h>
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#endif
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/* v4l debugging and diagnostics */
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/* Debug bitmask flags to be used on V4L2 */
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#define V4L2_DEBUG_IOCTL 0x01
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#define V4L2_DEBUG_IOCTL_ARG 0x02
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/* Use this macro for non-I2C drivers. Pass the driver name as the first arg. */
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#define v4l_print_ioctl(name, cmd) \
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do { \
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printk(KERN_DEBUG "%s: ", name); \
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v4l_printk_ioctl(cmd); \
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} while (0)
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/* Use this macro in I2C drivers where 'client' is the struct i2c_client
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pointer */
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#define v4l_i2c_print_ioctl(client, cmd) \
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do { \
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v4l_client_printk(KERN_DEBUG, client, ""); \
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v4l_printk_ioctl(cmd); \
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} while (0)
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/* Video standard functions */
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extern const char *v4l2_norm_to_name(v4l2_std_id id);
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extern int v4l2_video_std_construct(struct v4l2_standard *vs,
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int id, const char *name);
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/* Prints the ioctl in a human-readable format */
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extern void v4l_printk_ioctl(unsigned int cmd);
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/* names for fancy debug output */
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extern const char *v4l2_field_names[];
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extern const char *v4l2_type_names[];
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/* Compatibility layer interface -- v4l1-compat module */
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typedef int (*v4l2_kioctl)(struct inode *inode, struct file *file,
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unsigned int cmd, void *arg);
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#ifdef CONFIG_VIDEO_V4L1_COMPAT
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int v4l_compat_translate_ioctl(struct inode *inode, struct file *file,
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int cmd, void *arg, v4l2_kioctl driver_ioctl);
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#else
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#define v4l_compat_translate_ioctl(inode, file, cmd, arg, ioctl) (-EINVAL)
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#endif
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/* 32 Bits compatibility layer for 64 bits processors */
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extern long v4l_compat_ioctl32(struct file *file, unsigned int cmd,
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unsigned long arg);
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extern int video_ioctl2(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg);
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/* Include support for obsoleted stuff */
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extern int video_usercopy(struct inode *inode, struct file *file,
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unsigned int cmd, unsigned long arg,
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int (*func)(struct inode *inode, struct file *file,
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unsigned int cmd, void *arg));
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#endif /* _V4L2_IOCTL_H */
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