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17028cdb74
The old debug field is renamed to dev_debug to ensure that existing drivers (including out-of-tree drivers) that try to use the old name will no longer compile. A comment has also been added that makes it explicit that drivers shouldn't use this field. Additional bits have been added to the debug flag to be more fine-grained when debugging, especially when dealing with streaming ioctls and read, write and poll. You want to enable those explicitly to prevent flooding the log when streaming unless you actually want to do that. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
342 lines
13 KiB
C
342 lines
13 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/mutex.h>
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#include <linux/compiler.h> /* need __user */
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#include <linux/videodev2.h>
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struct v4l2_fh;
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struct v4l2_ioctl_ops {
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/* ioctl callbacks */
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/* VIDIOC_QUERYCAP handler */
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int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap);
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/* Priority handling */
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int (*vidioc_g_priority) (struct file *file, void *fh,
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enum v4l2_priority *p);
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int (*vidioc_s_priority) (struct file *file, void *fh,
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enum v4l2_priority p);
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/* VIDIOC_ENUM_FMT handlers */
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int (*vidioc_enum_fmt_vid_cap) (struct file *file, void *fh,
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struct v4l2_fmtdesc *f);
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int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh,
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struct v4l2_fmtdesc *f);
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int (*vidioc_enum_fmt_vid_out) (struct file *file, void *fh,
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struct v4l2_fmtdesc *f);
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int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
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struct v4l2_fmtdesc *f);
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int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh,
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struct v4l2_fmtdesc *f);
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int (*vidioc_enum_fmt_sdr_cap) (struct file *file, void *fh,
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struct v4l2_fmtdesc *f);
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/* VIDIOC_G_FMT handlers */
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int (*vidioc_g_fmt_vid_cap) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_vid_out) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_vbi_cap) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_vbi_out) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_g_fmt_sdr_cap) (struct file *file, void *fh,
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struct v4l2_format *f);
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/* VIDIOC_S_FMT handlers */
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int (*vidioc_s_fmt_vid_cap) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_vid_out) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_vbi_cap) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_vbi_out) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_s_fmt_sdr_cap) (struct file *file, void *fh,
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struct v4l2_format *f);
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/* VIDIOC_TRY_FMT handlers */
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int (*vidioc_try_fmt_vid_cap) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_vid_out) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_vbi_cap) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_vbi_out) (struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
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struct v4l2_format *f);
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int (*vidioc_try_fmt_sdr_cap) (struct file *file, void *fh,
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struct v4l2_format *f);
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/* Buffer handlers */
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int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);
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int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);
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int (*vidioc_qbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
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int (*vidioc_expbuf) (struct file *file, void *fh,
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struct v4l2_exportbuffer *e);
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int (*vidioc_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
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int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b);
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int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b);
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int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
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int (*vidioc_g_fbuf) (struct file *file, void *fh,
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struct v4l2_framebuffer *a);
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int (*vidioc_s_fbuf) (struct file *file, void *fh,
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const struct v4l2_framebuffer *a);
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/* Stream on/off */
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int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);
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int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i);
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/* Standard handling
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ENUMSTD is handled by videodev.c
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*/
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int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm);
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int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id norm);
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int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
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/* Input handling */
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int (*vidioc_enum_input)(struct file *file, void *fh,
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struct v4l2_input *inp);
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int (*vidioc_g_input) (struct file *file, void *fh, unsigned int *i);
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int (*vidioc_s_input) (struct file *file, void *fh, unsigned int i);
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/* Output handling */
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int (*vidioc_enum_output) (struct file *file, void *fh,
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struct v4l2_output *a);
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int (*vidioc_g_output) (struct file *file, void *fh, unsigned int *i);
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int (*vidioc_s_output) (struct file *file, void *fh, unsigned int i);
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/* Control handling */
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int (*vidioc_queryctrl) (struct file *file, void *fh,
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struct v4l2_queryctrl *a);
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int (*vidioc_query_ext_ctrl) (struct file *file, void *fh,
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struct v4l2_query_ext_ctrl *a);
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int (*vidioc_g_ctrl) (struct file *file, void *fh,
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struct v4l2_control *a);
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int (*vidioc_s_ctrl) (struct file *file, void *fh,
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struct v4l2_control *a);
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int (*vidioc_g_ext_ctrls) (struct file *file, void *fh,
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struct v4l2_ext_controls *a);
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int (*vidioc_s_ext_ctrls) (struct file *file, void *fh,
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struct v4l2_ext_controls *a);
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int (*vidioc_try_ext_ctrls) (struct file *file, void *fh,
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struct v4l2_ext_controls *a);
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int (*vidioc_querymenu) (struct file *file, void *fh,
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struct v4l2_querymenu *a);
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/* Audio ioctls */
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int (*vidioc_enumaudio) (struct file *file, void *fh,
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struct v4l2_audio *a);
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int (*vidioc_g_audio) (struct file *file, void *fh,
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struct v4l2_audio *a);
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int (*vidioc_s_audio) (struct file *file, void *fh,
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const struct v4l2_audio *a);
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/* Audio out ioctls */
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int (*vidioc_enumaudout) (struct file *file, void *fh,
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struct v4l2_audioout *a);
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int (*vidioc_g_audout) (struct file *file, void *fh,
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struct v4l2_audioout *a);
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int (*vidioc_s_audout) (struct file *file, void *fh,
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const struct v4l2_audioout *a);
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int (*vidioc_g_modulator) (struct file *file, void *fh,
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struct v4l2_modulator *a);
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int (*vidioc_s_modulator) (struct file *file, void *fh,
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const struct v4l2_modulator *a);
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/* Crop ioctls */
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int (*vidioc_cropcap) (struct file *file, void *fh,
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struct v4l2_cropcap *a);
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int (*vidioc_g_crop) (struct file *file, void *fh,
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struct v4l2_crop *a);
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int (*vidioc_s_crop) (struct file *file, void *fh,
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const struct v4l2_crop *a);
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int (*vidioc_g_selection) (struct file *file, void *fh,
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struct v4l2_selection *s);
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int (*vidioc_s_selection) (struct file *file, void *fh,
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struct v4l2_selection *s);
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/* Compression ioctls */
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int (*vidioc_g_jpegcomp) (struct file *file, void *fh,
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struct v4l2_jpegcompression *a);
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int (*vidioc_s_jpegcomp) (struct file *file, void *fh,
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const struct v4l2_jpegcompression *a);
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int (*vidioc_g_enc_index) (struct file *file, void *fh,
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struct v4l2_enc_idx *a);
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int (*vidioc_encoder_cmd) (struct file *file, void *fh,
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struct v4l2_encoder_cmd *a);
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int (*vidioc_try_encoder_cmd) (struct file *file, void *fh,
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struct v4l2_encoder_cmd *a);
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int (*vidioc_decoder_cmd) (struct file *file, void *fh,
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struct v4l2_decoder_cmd *a);
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int (*vidioc_try_decoder_cmd) (struct file *file, void *fh,
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struct v4l2_decoder_cmd *a);
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/* Stream type-dependent parameter ioctls */
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int (*vidioc_g_parm) (struct file *file, void *fh,
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struct v4l2_streamparm *a);
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int (*vidioc_s_parm) (struct file *file, void *fh,
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struct v4l2_streamparm *a);
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/* Tuner ioctls */
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int (*vidioc_g_tuner) (struct file *file, void *fh,
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struct v4l2_tuner *a);
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int (*vidioc_s_tuner) (struct file *file, void *fh,
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const struct v4l2_tuner *a);
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int (*vidioc_g_frequency) (struct file *file, void *fh,
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struct v4l2_frequency *a);
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int (*vidioc_s_frequency) (struct file *file, void *fh,
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const struct v4l2_frequency *a);
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int (*vidioc_enum_freq_bands) (struct file *file, void *fh,
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struct v4l2_frequency_band *band);
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/* Sliced VBI cap */
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int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,
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struct v4l2_sliced_vbi_cap *a);
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/* Log status ioctl */
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int (*vidioc_log_status) (struct file *file, void *fh);
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int (*vidioc_s_hw_freq_seek) (struct file *file, void *fh,
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const struct v4l2_hw_freq_seek *a);
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/* Debugging ioctls */
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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int (*vidioc_g_register) (struct file *file, void *fh,
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struct v4l2_dbg_register *reg);
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int (*vidioc_s_register) (struct file *file, void *fh,
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const struct v4l2_dbg_register *reg);
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int (*vidioc_g_chip_info) (struct file *file, void *fh,
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struct v4l2_dbg_chip_info *chip);
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#endif
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int (*vidioc_enum_framesizes) (struct file *file, void *fh,
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struct v4l2_frmsizeenum *fsize);
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int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
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struct v4l2_frmivalenum *fival);
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/* DV Timings IOCTLs */
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int (*vidioc_s_dv_timings) (struct file *file, void *fh,
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struct v4l2_dv_timings *timings);
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int (*vidioc_g_dv_timings) (struct file *file, void *fh,
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struct v4l2_dv_timings *timings);
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int (*vidioc_query_dv_timings) (struct file *file, void *fh,
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struct v4l2_dv_timings *timings);
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int (*vidioc_enum_dv_timings) (struct file *file, void *fh,
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struct v4l2_enum_dv_timings *timings);
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int (*vidioc_dv_timings_cap) (struct file *file, void *fh,
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struct v4l2_dv_timings_cap *cap);
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int (*vidioc_g_edid) (struct file *file, void *fh, struct v4l2_edid *edid);
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int (*vidioc_s_edid) (struct file *file, void *fh, struct v4l2_edid *edid);
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int (*vidioc_subscribe_event) (struct v4l2_fh *fh,
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const struct v4l2_event_subscription *sub);
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int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
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const struct v4l2_event_subscription *sub);
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/* For other private ioctls */
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long (*vidioc_default) (struct file *file, void *fh,
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bool valid_prio, unsigned int cmd, void *arg);
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};
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/* v4l debugging and diagnostics */
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/* Device debug flags to be used with the video device debug attribute */
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/* Just log the ioctl name + error code */
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#define V4L2_DEV_DEBUG_IOCTL 0x01
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/* Log the ioctl name arguments + error code */
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#define V4L2_DEV_DEBUG_IOCTL_ARG 0x02
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/* Log the file operations open, release, mmap and get_unmapped_area */
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#define V4L2_DEV_DEBUG_FOP 0x04
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/* Log the read and write file operations and the VIDIOC_(D)QBUF ioctls */
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#define V4L2_DEV_DEBUG_STREAMING 0x08
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/* Log poll() */
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#define V4L2_DEV_DEBUG_POLL 0x10
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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 void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
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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. If prefix != NULL,
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then do printk(KERN_DEBUG "%s: ", prefix) first. */
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extern void v4l_printk_ioctl(const char *prefix, unsigned int cmd);
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/* Internal use only: get the mutex (if any) that we need to lock for the
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given command. */
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struct video_device;
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extern struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned 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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#ifdef CONFIG_COMPAT
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/* 32 Bits compatibility layer for 64 bits processors */
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extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
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unsigned long arg);
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#endif
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typedef long (*v4l2_kioctl)(struct file *file,
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unsigned int cmd, void *arg);
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/* Include support for obsoleted stuff */
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extern long video_usercopy(struct file *file, unsigned int cmd,
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unsigned long arg, v4l2_kioctl func);
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/* Standard handlers for V4L ioctl's */
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extern long video_ioctl2(struct file *file,
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unsigned int cmd, unsigned long arg);
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#endif /* _V4L2_IOCTL_H */
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