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Commit bba65c13 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
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[media] v4l2-ioctl.h: document the remaining functions 

There are several undocumented functions here; document them.

While here, make checkpatch.pl happy.
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
parent 94d71e58
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Showing with 305 additions and 206 deletions
Documentation/media/conf_nitpick.py
View file @ bba65c13
......@@ -96,5 +96,6 @@ nitpick_ignore = [
("c:type", "__user"),
("c:type", "usb_device"),
("c:type", "usb_interface"),
("c:type", "v4l2_std_id"),
("c:type", "video_system_t"),
]
include/media/v4l2-ioctl.h
View file @ bba65c13
......@@ -287,273 +287,286 @@ struct v4l2_ioctl_ops {
/* ioctl callbacks */
/* VIDIOC_QUERYCAP handler */
int (*vidioc_querycap)(struct file *file, void *fh, struct v4l2_capability *cap);
int (*vidioc_querycap)(struct file *file, void *fh,
struct v4l2_capability *cap);
/* VIDIOC_ENUM_FMT handlers */
int (*vidioc_enum_fmt_vid_cap) (struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_vid_overlay) (struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_vid_out) (struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_vid_cap)(struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_vid_overlay)(struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_vid_out)(struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_vid_cap_mplane)(struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_vid_out_mplane)(struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_sdr_cap) (struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_sdr_out) (struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_sdr_cap)(struct file *file, void *fh,
struct v4l2_fmtdesc *f);
int (*vidioc_enum_fmt_sdr_out)(struct file *file, void *fh,
struct v4l2_fmtdesc *f);
/* VIDIOC_G_FMT handlers */
int (*vidioc_g_fmt_vid_cap) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_vid_cap)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_vid_overlay)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_vid_out) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_vid_out)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_vid_out_overlay)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_vbi_cap) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_vbi_out) (struct file *file, void *fh,
struct v4l2_format *f);
struct v4l2_format *f);
int (*vidioc_g_fmt_vbi_cap)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_vbi_out)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_sliced_vbi_cap)(struct file *file, void *fh,
struct v4l2_format *f);
struct v4l2_format *f);
int (*vidioc_g_fmt_sliced_vbi_out)(struct file *file, void *fh,
struct v4l2_format *f);
struct v4l2_format *f);
int (*vidioc_g_fmt_vid_cap_mplane)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_vid_out_mplane)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_sdr_cap) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_sdr_out) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_sdr_cap)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_g_fmt_sdr_out)(struct file *file, void *fh,
struct v4l2_format *f);
/* VIDIOC_S_FMT handlers */
int (*vidioc_s_fmt_vid_cap) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_vid_cap)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_vid_overlay)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_vid_out) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_vid_out)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_vid_out_overlay)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_vbi_cap) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_vbi_out) (struct file *file, void *fh,
struct v4l2_format *f);
struct v4l2_format *f);
int (*vidioc_s_fmt_vbi_cap)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_vbi_out)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_sliced_vbi_cap)(struct file *file, void *fh,
struct v4l2_format *f);
struct v4l2_format *f);
int (*vidioc_s_fmt_sliced_vbi_out)(struct file *file, void *fh,
struct v4l2_format *f);
struct v4l2_format *f);
int (*vidioc_s_fmt_vid_cap_mplane)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_vid_out_mplane)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_sdr_cap) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_sdr_out) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_sdr_cap)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_s_fmt_sdr_out)(struct file *file, void *fh,
struct v4l2_format *f);
/* VIDIOC_TRY_FMT handlers */
int (*vidioc_try_fmt_vid_cap) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_vid_cap)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_vid_overlay)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_vid_out) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_vid_out)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_vid_out_overlay)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_vbi_cap) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_vbi_out) (struct file *file, void *fh,
struct v4l2_format *f);
struct v4l2_format *f);
int (*vidioc_try_fmt_vbi_cap)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_vbi_out)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_sliced_vbi_cap)(struct file *file, void *fh,
struct v4l2_format *f);
struct v4l2_format *f);
int (*vidioc_try_fmt_sliced_vbi_out)(struct file *file, void *fh,
struct v4l2_format *f);
struct v4l2_format *f);
int (*vidioc_try_fmt_vid_cap_mplane)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_vid_out_mplane)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_sdr_cap) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_sdr_out) (struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_sdr_cap)(struct file *file, void *fh,
struct v4l2_format *f);
int (*vidioc_try_fmt_sdr_out)(struct file *file, void *fh,
struct v4l2_format *f);
/* Buffer handlers */
int (*vidioc_reqbufs) (struct file *file, void *fh, struct v4l2_requestbuffers *b);
int (*vidioc_querybuf)(struct file *file, void *fh, struct v4l2_buffer *b);
int (*vidioc_qbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
int (*vidioc_expbuf) (struct file *file, void *fh,
struct v4l2_exportbuffer *e);
int (*vidioc_dqbuf) (struct file *file, void *fh, struct v4l2_buffer *b);
int (*vidioc_create_bufs)(struct file *file, void *fh, struct v4l2_create_buffers *b);
int (*vidioc_prepare_buf)(struct file *file, void *fh, struct v4l2_buffer *b);
int (*vidioc_overlay) (struct file *file, void *fh, unsigned int i);
int (*vidioc_g_fbuf) (struct file *file, void *fh,
struct v4l2_framebuffer *a);
int (*vidioc_s_fbuf) (struct file *file, void *fh,
const struct v4l2_framebuffer *a);
int (*vidioc_reqbufs)(struct file *file, void *fh,
struct v4l2_requestbuffers *b);
int (*vidioc_querybuf)(struct file *file, void *fh,
struct v4l2_buffer *b);
int (*vidioc_qbuf)(struct file *file, void *fh,
struct v4l2_buffer *b);
int (*vidioc_expbuf)(struct file *file, void *fh,
struct v4l2_exportbuffer *e);
int (*vidioc_dqbuf)(struct file *file, void *fh,
struct v4l2_buffer *b);
int (*vidioc_create_bufs)(struct file *file, void *fh,
struct v4l2_create_buffers *b);
int (*vidioc_prepare_buf)(struct file *file, void *fh,
struct v4l2_buffer *b);
int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
int (*vidioc_g_fbuf)(struct file *file, void *fh,
struct v4l2_framebuffer *a);
int (*vidioc_s_fbuf)(struct file *file, void *fh,
const struct v4l2_framebuffer *a);
/* Stream on/off */
int (*vidioc_streamon) (struct file *file, void *fh, enum v4l2_buf_type i);
int (*vidioc_streamoff)(struct file *file, void *fh, enum v4l2_buf_type i);
/* Standard handling
ENUMSTD is handled by videodev.c
int (*vidioc_streamon)(struct file *file, void *fh,
enum v4l2_buf_type i);
int (*vidioc_streamoff)(struct file *file, void *fh,
enum v4l2_buf_type i);
/*
* Standard handling
*
* Note: ENUMSTD is handled by videodev.c
*/
int (*vidioc_g_std) (struct file *file, void *fh, v4l2_std_id *norm);
int (*vidioc_s_std) (struct file *file, void *fh, v4l2_std_id norm);
int (*vidioc_querystd) (struct file *file, void *fh, v4l2_std_id *a);
int (*vidioc_g_std)(struct file *file, void *fh, v4l2_std_id *norm);
int (*vidioc_s_std)(struct file *file, void *fh, v4l2_std_id norm);
int (*vidioc_querystd)(struct file *file, void *fh, v4l2_std_id *a);
/* Input handling */
int (*vidioc_enum_input)(struct file *file, void *fh,
struct v4l2_input *inp);
int (*vidioc_g_input) (struct file *file, void *fh, unsigned int *i);
int (*vidioc_s_input) (struct file *file, void *fh, unsigned int i);
int (*vidioc_g_input)(struct file *file, void *fh, unsigned int *i);
int (*vidioc_s_input)(struct file *file, void *fh, unsigned int i);
/* Output handling */
int (*vidioc_enum_output) (struct file *file, void *fh,
int (*vidioc_enum_output)(struct file *file, void *fh,
struct v4l2_output *a);
int (*vidioc_g_output) (struct file *file, void *fh, unsigned int *i);
int (*vidioc_s_output) (struct file *file, void *fh, unsigned int i);
int (*vidioc_g_output)(struct file *file, void *fh, unsigned int *i);
int (*vidioc_s_output)(struct file *file, void *fh, unsigned int i);
/* Control handling */
int (*vidioc_queryctrl) (struct file *file, void *fh,
struct v4l2_queryctrl *a);
int (*vidioc_query_ext_ctrl) (struct file *file, void *fh,
struct v4l2_query_ext_ctrl *a);
int (*vidioc_g_ctrl) (struct file *file, void *fh,
struct v4l2_control *a);
int (*vidioc_s_ctrl) (struct file *file, void *fh,
struct v4l2_control *a);
int (*vidioc_g_ext_ctrls) (struct file *file, void *fh,
struct v4l2_ext_controls *a);
int (*vidioc_s_ext_ctrls) (struct file *file, void *fh,
struct v4l2_ext_controls *a);
int (*vidioc_try_ext_ctrls) (struct file *file, void *fh,
struct v4l2_ext_controls *a);
int (*vidioc_querymenu) (struct file *file, void *fh,
struct v4l2_querymenu *a);
int (*vidioc_queryctrl)(struct file *file, void *fh,
struct v4l2_queryctrl *a);
int (*vidioc_query_ext_ctrl)(struct file *file, void *fh,
struct v4l2_query_ext_ctrl *a);
int (*vidioc_g_ctrl)(struct file *file, void *fh,
struct v4l2_control *a);
int (*vidioc_s_ctrl)(struct file *file, void *fh,
struct v4l2_control *a);
int (*vidioc_g_ext_ctrls)(struct file *file, void *fh,
struct v4l2_ext_controls *a);
int (*vidioc_s_ext_ctrls)(struct file *file, void *fh,
struct v4l2_ext_controls *a);
int (*vidioc_try_ext_ctrls)(struct file *file, void *fh,
struct v4l2_ext_controls *a);
int (*vidioc_querymenu)(struct file *file, void *fh,
struct v4l2_querymenu *a);
/* Audio ioctls */
int (*vidioc_enumaudio) (struct file *file, void *fh,
struct v4l2_audio *a);
int (*vidioc_g_audio) (struct file *file, void *fh,
struct v4l2_audio *a);
int (*vidioc_s_audio) (struct file *file, void *fh,
const struct v4l2_audio *a);
int (*vidioc_enumaudio)(struct file *file, void *fh,
struct v4l2_audio *a);
int (*vidioc_g_audio)(struct file *file, void *fh,
struct v4l2_audio *a);
int (*vidioc_s_audio)(struct file *file, void *fh,
const struct v4l2_audio *a);
/* Audio out ioctls */
int (*vidioc_enumaudout) (struct file *file, void *fh,
struct v4l2_audioout *a);
int (*vidioc_g_audout) (struct file *file, void *fh,
struct v4l2_audioout *a);
int (*vidioc_s_audout) (struct file *file, void *fh,
const struct v4l2_audioout *a);
int (*vidioc_g_modulator) (struct file *file, void *fh,
struct v4l2_modulator *a);
int (*vidioc_s_modulator) (struct file *file, void *fh,
const struct v4l2_modulator *a);
int (*vidioc_enumaudout)(struct file *file, void *fh,
struct v4l2_audioout *a);
int (*vidioc_g_audout)(struct file *file, void *fh,
struct v4l2_audioout *a);
int (*vidioc_s_audout)(struct file *file, void *fh,
const struct v4l2_audioout *a);
int (*vidioc_g_modulator)(struct file *file, void *fh,
struct v4l2_modulator *a);
int (*vidioc_s_modulator)(struct file *file, void *fh,
const struct v4l2_modulator *a);
/* Crop ioctls */
int (*vidioc_cropcap) (struct file *file, void *fh,
struct v4l2_cropcap *a);
int (*vidioc_g_crop) (struct file *file, void *fh,
struct v4l2_crop *a);
int (*vidioc_s_crop) (struct file *file, void *fh,
const struct v4l2_crop *a);
int (*vidioc_g_selection) (struct file *file, void *fh,
struct v4l2_selection *s);
int (*vidioc_s_selection) (struct file *file, void *fh,
struct v4l2_selection *s);
int (*vidioc_cropcap)(struct file *file, void *fh,
struct v4l2_cropcap *a);
int (*vidioc_g_crop)(struct file *file, void *fh,
struct v4l2_crop *a);
int (*vidioc_s_crop)(struct file *file, void *fh,
const struct v4l2_crop *a);
int (*vidioc_g_selection)(struct file *file, void *fh,
struct v4l2_selection *s);
int (*vidioc_s_selection)(struct file *file, void *fh,
struct v4l2_selection *s);
/* Compression ioctls */
int (*vidioc_g_jpegcomp) (struct file *file, void *fh,
struct v4l2_jpegcompression *a);
int (*vidioc_s_jpegcomp) (struct file *file, void *fh,
const struct v4l2_jpegcompression *a);
int (*vidioc_g_enc_index) (struct file *file, void *fh,
struct v4l2_enc_idx *a);
int (*vidioc_encoder_cmd) (struct file *file, void *fh,
struct v4l2_encoder_cmd *a);
int (*vidioc_try_encoder_cmd) (struct file *file, void *fh,
struct v4l2_encoder_cmd *a);
int (*vidioc_decoder_cmd) (struct file *file, void *fh,
struct v4l2_decoder_cmd *a);
int (*vidioc_try_decoder_cmd) (struct file *file, void *fh,
struct v4l2_decoder_cmd *a);
int (*vidioc_g_jpegcomp)(struct file *file, void *fh,
struct v4l2_jpegcompression *a);
int (*vidioc_s_jpegcomp)(struct file *file, void *fh,
const struct v4l2_jpegcompression *a);
int (*vidioc_g_enc_index)(struct file *file, void *fh,
struct v4l2_enc_idx *a);
int (*vidioc_encoder_cmd)(struct file *file, void *fh,
struct v4l2_encoder_cmd *a);
int (*vidioc_try_encoder_cmd)(struct file *file, void *fh,
struct v4l2_encoder_cmd *a);
int (*vidioc_decoder_cmd)(struct file *file, void *fh,
struct v4l2_decoder_cmd *a);
int (*vidioc_try_decoder_cmd)(struct file *file, void *fh,
struct v4l2_decoder_cmd *a);
/* Stream type-dependent parameter ioctls */
int (*vidioc_g_parm) (struct file *file, void *fh,
struct v4l2_streamparm *a);
int (*vidioc_s_parm) (struct file *file, void *fh,
struct v4l2_streamparm *a);
int (*vidioc_g_parm)(struct file *file, void *fh,
struct v4l2_streamparm *a);
int (*vidioc_s_parm)(struct file *file, void *fh,
struct v4l2_streamparm *a);
/* Tuner ioctls */
int (*vidioc_g_tuner) (struct file *file, void *fh,
struct v4l2_tuner *a);
int (*vidioc_s_tuner) (struct file *file, void *fh,
const struct v4l2_tuner *a);
int (*vidioc_g_frequency) (struct file *file, void *fh,
struct v4l2_frequency *a);
int (*vidioc_s_frequency) (struct file *file, void *fh,
const struct v4l2_frequency *a);
int (*vidioc_enum_freq_bands) (struct file *file, void *fh,
struct v4l2_frequency_band *band);
int (*vidioc_g_tuner)(struct file *file, void *fh,
struct v4l2_tuner *a);
int (*vidioc_s_tuner)(struct file *file, void *fh,
const struct v4l2_tuner *a);
int (*vidioc_g_frequency)(struct file *file, void *fh,
struct v4l2_frequency *a);
int (*vidioc_s_frequency)(struct file *file, void *fh,
const struct v4l2_frequency *a);
int (*vidioc_enum_freq_bands)(struct file *file, void *fh,
struct v4l2_frequency_band *band);
/* Sliced VBI cap */
int (*vidioc_g_sliced_vbi_cap) (struct file *file, void *fh,
struct v4l2_sliced_vbi_cap *a);
int (*vidioc_g_sliced_vbi_cap)(struct file *file, void *fh,
struct v4l2_sliced_vbi_cap *a);
/* Log status ioctl */
int (*vidioc_log_status) (struct file *file, void *fh);
int (*vidioc_log_status)(struct file *file, void *fh);
int (*vidioc_s_hw_freq_seek) (struct file *file, void *fh,
const struct v4l2_hw_freq_seek *a);
int (*vidioc_s_hw_freq_seek)(struct file *file, void *fh,
const struct v4l2_hw_freq_seek *a);
/* Debugging ioctls */
#ifdef CONFIG_VIDEO_ADV_DEBUG
int (*vidioc_g_register) (struct file *file, void *fh,
struct v4l2_dbg_register *reg);
int (*vidioc_s_register) (struct file *file, void *fh,
const struct v4l2_dbg_register *reg);
int (*vidioc_g_register)(struct file *file, void *fh,
struct v4l2_dbg_register *reg);
int (*vidioc_s_register)(struct file *file, void *fh,
const struct v4l2_dbg_register *reg);
int (*vidioc_g_chip_info) (struct file *file, void *fh,
struct v4l2_dbg_chip_info *chip);
int (*vidioc_g_chip_info)(struct file *file, void *fh,
struct v4l2_dbg_chip_info *chip);
#endif
int (*vidioc_enum_framesizes) (struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize);
int (*vidioc_enum_framesizes)(struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize);
int (*vidioc_enum_frameintervals) (struct file *file, void *fh,
struct v4l2_frmivalenum *fival);
int (*vidioc_enum_frameintervals)(struct file *file, void *fh,
struct v4l2_frmivalenum *fival);
/* DV Timings IOCTLs */
int (*vidioc_s_dv_timings) (struct file *file, void *fh,
struct v4l2_dv_timings *timings);
int (*vidioc_g_dv_timings) (struct file *file, void *fh,
struct v4l2_dv_timings *timings);
int (*vidioc_query_dv_timings) (struct file *file, void *fh,
struct v4l2_dv_timings *timings);
int (*vidioc_enum_dv_timings) (struct file *file, void *fh,
struct v4l2_enum_dv_timings *timings);
int (*vidioc_dv_timings_cap) (struct file *file, void *fh,
struct v4l2_dv_timings_cap *cap);
int (*vidioc_g_edid) (struct file *file, void *fh, struct v4l2_edid *edid);
int (*vidioc_s_edid) (struct file *file, void *fh, struct v4l2_edid *edid);
int (*vidioc_subscribe_event) (struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub);
int (*vidioc_s_dv_timings)(struct file *file, void *fh,
struct v4l2_dv_timings *timings);
int (*vidioc_g_dv_timings)(struct file *file, void *fh,
struct v4l2_dv_timings *timings);
int (*vidioc_query_dv_timings)(struct file *file, void *fh,
struct v4l2_dv_timings *timings);
int (*vidioc_enum_dv_timings)(struct file *file, void *fh,
struct v4l2_enum_dv_timings *timings);
int (*vidioc_dv_timings_cap)(struct file *file, void *fh,
struct v4l2_dv_timings_cap *cap);
int (*vidioc_g_edid)(struct file *file, void *fh,
struct v4l2_edid *edid);
int (*vidioc_s_edid)(struct file *file, void *fh,
struct v4l2_edid *edid);
int (*vidioc_subscribe_event)(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub);
int (*vidioc_unsubscribe_event)(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub);
/* For other private ioctls */
long (*vidioc_default) (struct file *file, void *fh,
bool valid_prio, unsigned int cmd, void *arg);
long (*vidioc_default)(struct file *file, void *fh,
bool valid_prio, unsigned int cmd, void *arg);
};
......@@ -573,38 +586,123 @@ struct v4l2_ioctl_ops {
#define V4L2_DEV_DEBUG_POLL 0x10
/* Video standard functions */
extern const char *v4l2_norm_to_name(v4l2_std_id id);
extern void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
extern int v4l2_video_std_construct(struct v4l2_standard *vs,
/**
* v4l2_norm_to_name - Ancillary routine to analog TV standard name from its ID.
*
* @id: analog TV standard ID.
*
* Return: returns a string with the name of the analog TV standard.
* If the standard is not found or if @id points to multiple standard,
* it returns "Unknown".
*/
const char *v4l2_norm_to_name(v4l2_std_id id);
/**
* v4l2_video_std_frame_period - Ancillary routine that fills a
* struct &v4l2_fract pointer with the default framerate fraction.
*
* @id: analog TV sdandard ID.
* @frameperiod: struct &v4l2_fract pointer to be filled
*
*/
void v4l2_video_std_frame_period(int id, struct v4l2_fract *frameperiod);
/**
* v4l2_video_std_construct - Ancillary routine that fills in the fields of
* a &v4l2_standard structure according to the @id parameter.
*
* @vs: struct &v4l2_standard pointer to be filled
* @id: analog TV sdandard ID.
* @name: name of the standard to be used
*
* .. note::
*
* This ancillary routine is obsolete. Shouldn't be used on newer drivers.
*/
int v4l2_video_std_construct(struct v4l2_standard *vs,
int id, const char *name);
/* Prints the ioctl in a human-readable format. If prefix != NULL,
then do printk(KERN_DEBUG "%s: ", prefix) first. */
extern void v4l_printk_ioctl(const char *prefix, unsigned int cmd);
/* Internal use only: get the mutex (if any) that we need to lock for the
given command. */
/**
* v4l_printk_ioctl - Ancillary routine that prints the ioctl in a
* human-readable format.
*
* @prefix: prefix to be added at the ioctl prints.
* @cmd: ioctl name
*
* .. note::
*
* If prefix != %NULL, then it will issue a
* ``printk(KERN_DEBUG "%s: ", prefix)`` first.
*/
void v4l_printk_ioctl(const char *prefix, unsigned int cmd);
struct video_device;
extern struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned cmd);
/**
* v4l2_ioctl_get_lock - get the mutex (if any) that it is need to lock for
* a given command.
*
* @vdev: Pointer to struct &video_device.
* @cmd: Ioctl name.
*
* .. note:: Internal use only. Should not be used outside V4L2 core.
*/
struct mutex *v4l2_ioctl_get_lock(struct video_device *vdev, unsigned int cmd);
/* names for fancy debug output */
extern const char *v4l2_field_names[];
extern const char *v4l2_type_names[];
#ifdef CONFIG_COMPAT
/* 32 Bits compatibility layer for 64 bits processors */
extern long v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
unsigned long arg);
/**
* v4l2_compat_ioctl32 -32 Bits compatibility layer for 64 bits processors
*
* @file: Pointer to struct &file.
* @cmd: Ioctl name.
* @arg: Ioctl argument.
*/
long int v4l2_compat_ioctl32(struct file *file, unsigned int cmd,
unsigned long arg);
#endif
typedef long (*v4l2_kioctl)(struct file *file,
unsigned int cmd, void *arg);
/**
* typedef v4l2_kioctl - Typedef used to pass an ioctl handler.
*
* @file: Pointer to struct &file.
* @cmd: Ioctl name.
* @arg: Ioctl argument.
*/
typedef long (*v4l2_kioctl)(struct file *file, unsigned int cmd, void *arg);
/* Include support for obsoleted stuff */
extern long video_usercopy(struct file *file, unsigned int cmd,
unsigned long arg, v4l2_kioctl func);
/**
* video_usercopy - copies data from/to userspace memory when an ioctl is
* issued.
*
* @file: Pointer to struct &file.
* @cmd: Ioctl name.
* @arg: Ioctl argument.
* @func: function that will handle the ioctl
*
* .. note::
*
* This routine should be used only inside the V4L2 core.
*/
long int video_usercopy(struct file *file, unsigned int cmd,
unsigned long int arg, v4l2_kioctl func);
/* Standard handlers for V4L ioctl's */
extern long video_ioctl2(struct file *file,
unsigned int cmd, unsigned long arg);
/**
* video_ioctl2 - Handles a V4L2 ioctl.
*
* @file: Pointer to struct &file.
* @cmd: Ioctl name.
* @arg: Ioctl argument.
*
* Method used to hancle an ioctl. Should be used to fill the
* &v4l2_ioctl_ops.unlocked_ioctl on all V4L2 drivers.
*/
long int video_ioctl2(struct file *file,
unsigned int cmd, unsigned long int arg);
#endif /* _V4L2_IOCTL_H */
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