提交 506bb54b 编写于 作者: M Mauro Carvalho Chehab

[media] v4l-dv-timings.h: Add to device-drivers DocBook

There are already markups for documentation at v4l-dv-timings.h,
however, they're not properly formatted.

Convert them to the right format and add this file to
the device-drivers DocBook.
Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: NJonathan Corbet <corbet@lwn.net>
上级 b6fce850
...@@ -233,8 +233,8 @@ X!Isound/sound_firmware.c ...@@ -233,8 +233,8 @@ X!Isound/sound_firmware.c
!Idrivers/media/dvb-core/dvb_ringbuffer.h !Idrivers/media/dvb-core/dvb_ringbuffer.h
!Iinclude/media/v4l2-ctrls.h !Iinclude/media/v4l2-ctrls.h
!Iinclude/media/v4l2-event.h !Iinclude/media/v4l2-event.h
!Iinclude/media/v4l2-dv-timings.h
<!-- FIXME: Removed for now due to document generation inconsistency <!-- FIXME: Removed for now due to document generation inconsistency
X!Iinclude/media/v4l2-dv-timings.h
X!Iinclude/media/v4l2-mediabus.h X!Iinclude/media/v4l2-mediabus.h
X!Iinclude/media/videobuf2-memops.h X!Iinclude/media/videobuf2-memops.h
X!Iinclude/media/videobuf2-core.h X!Iinclude/media/videobuf2-core.h
......
...@@ -23,11 +23,14 @@ ...@@ -23,11 +23,14 @@
#include <linux/videodev2.h> #include <linux/videodev2.h>
/** v4l2_dv_timings_presets: list of all dv_timings presets. /**
* v4l2_dv_timings_presets: list of all dv_timings presets.
*/ */
extern const struct v4l2_dv_timings v4l2_dv_timings_presets[]; extern const struct v4l2_dv_timings v4l2_dv_timings_presets[];
/** v4l2_check_dv_timings_fnc - timings check callback /**
* v4l2_check_dv_timings_fnc - timings check callback
*
* @t: the v4l2_dv_timings struct. * @t: the v4l2_dv_timings struct.
* @handle: a handle from the driver. * @handle: a handle from the driver.
* *
...@@ -35,83 +38,95 @@ extern const struct v4l2_dv_timings v4l2_dv_timings_presets[]; ...@@ -35,83 +38,95 @@ extern const struct v4l2_dv_timings v4l2_dv_timings_presets[];
*/ */
typedef bool v4l2_check_dv_timings_fnc(const struct v4l2_dv_timings *t, void *handle); typedef bool v4l2_check_dv_timings_fnc(const struct v4l2_dv_timings *t, void *handle);
/** v4l2_valid_dv_timings() - are these timings valid? /**
* @t: the v4l2_dv_timings struct. * v4l2_valid_dv_timings() - are these timings valid?
* @cap: the v4l2_dv_timings_cap capabilities. *
* @fnc: callback to check if this timing is OK. May be NULL. * @t: the v4l2_dv_timings struct.
* @fnc_handle: a handle that is passed on to @fnc. * @cap: the v4l2_dv_timings_cap capabilities.
* * @fnc: callback to check if this timing is OK. May be NULL.
* Returns true if the given dv_timings struct is supported by the * @fnc_handle: a handle that is passed on to @fnc.
* hardware capabilities and the callback function (if non-NULL), returns *
* false otherwise. * Returns true if the given dv_timings struct is supported by the
*/ * hardware capabilities and the callback function (if non-NULL), returns
* false otherwise.
*/
bool v4l2_valid_dv_timings(const struct v4l2_dv_timings *t, bool v4l2_valid_dv_timings(const struct v4l2_dv_timings *t,
const struct v4l2_dv_timings_cap *cap, const struct v4l2_dv_timings_cap *cap,
v4l2_check_dv_timings_fnc fnc, v4l2_check_dv_timings_fnc fnc,
void *fnc_handle); void *fnc_handle);
/** v4l2_enum_dv_timings_cap() - Helper function to enumerate possible DV timings based on capabilities /**
* @t: the v4l2_enum_dv_timings struct. * v4l2_enum_dv_timings_cap() - Helper function to enumerate possible DV
* @cap: the v4l2_dv_timings_cap capabilities. * timings based on capabilities
* @fnc: callback to check if this timing is OK. May be NULL. *
* @fnc_handle: a handle that is passed on to @fnc. * @t: the v4l2_enum_dv_timings struct.
* * @cap: the v4l2_dv_timings_cap capabilities.
* This enumerates dv_timings using the full list of possible CEA-861 and DMT * @fnc: callback to check if this timing is OK. May be NULL.
* timings, filtering out any timings that are not supported based on the * @fnc_handle: a handle that is passed on to @fnc.
* hardware capabilities and the callback function (if non-NULL). *
* * This enumerates dv_timings using the full list of possible CEA-861 and DMT
* If a valid timing for the given index is found, it will fill in @t and * timings, filtering out any timings that are not supported based on the
* return 0, otherwise it returns -EINVAL. * hardware capabilities and the callback function (if non-NULL).
*/ *
* If a valid timing for the given index is found, it will fill in @t and
* return 0, otherwise it returns -EINVAL.
*/
int v4l2_enum_dv_timings_cap(struct v4l2_enum_dv_timings *t, int v4l2_enum_dv_timings_cap(struct v4l2_enum_dv_timings *t,
const struct v4l2_dv_timings_cap *cap, const struct v4l2_dv_timings_cap *cap,
v4l2_check_dv_timings_fnc fnc, v4l2_check_dv_timings_fnc fnc,
void *fnc_handle); void *fnc_handle);
/** v4l2_find_dv_timings_cap() - Find the closest timings struct /**
* @t: the v4l2_enum_dv_timings struct. * v4l2_find_dv_timings_cap() - Find the closest timings struct
* @cap: the v4l2_dv_timings_cap capabilities. *
* @pclock_delta: maximum delta between t->pixelclock and the timing struct * @t: the v4l2_enum_dv_timings struct.
* under consideration. * @cap: the v4l2_dv_timings_cap capabilities.
* @fnc: callback to check if a given timings struct is OK. May be NULL. * @pclock_delta: maximum delta between t->pixelclock and the timing struct
* @fnc_handle: a handle that is passed on to @fnc. * under consideration.
* * @fnc: callback to check if a given timings struct is OK. May be NULL.
* This function tries to map the given timings to an entry in the * @fnc_handle: a handle that is passed on to @fnc.
* full list of possible CEA-861 and DMT timings, filtering out any timings *
* that are not supported based on the hardware capabilities and the callback * This function tries to map the given timings to an entry in the
* function (if non-NULL). * full list of possible CEA-861 and DMT timings, filtering out any timings
* * that are not supported based on the hardware capabilities and the callback
* On success it will fill in @t with the found timings and it returns true. * function (if non-NULL).
* On failure it will return false. *
*/ * On success it will fill in @t with the found timings and it returns true.
* On failure it will return false.
*/
bool v4l2_find_dv_timings_cap(struct v4l2_dv_timings *t, bool v4l2_find_dv_timings_cap(struct v4l2_dv_timings *t,
const struct v4l2_dv_timings_cap *cap, const struct v4l2_dv_timings_cap *cap,
unsigned pclock_delta, unsigned pclock_delta,
v4l2_check_dv_timings_fnc fnc, v4l2_check_dv_timings_fnc fnc,
void *fnc_handle); void *fnc_handle);
/** v4l2_match_dv_timings() - do two timings match? /**
* @measured: the measured timings data. * v4l2_match_dv_timings() - do two timings match?
* @standard: the timings according to the standard. *
* @pclock_delta: maximum delta in Hz between standard->pixelclock and * @measured: the measured timings data.
* the measured timings. * @standard: the timings according to the standard.
* * @pclock_delta: maximum delta in Hz between standard->pixelclock and
* Returns true if the two timings match, returns false otherwise. * the measured timings.
*/ *
* Returns true if the two timings match, returns false otherwise.
*/
bool v4l2_match_dv_timings(const struct v4l2_dv_timings *measured, bool v4l2_match_dv_timings(const struct v4l2_dv_timings *measured,
const struct v4l2_dv_timings *standard, const struct v4l2_dv_timings *standard,
unsigned pclock_delta); unsigned pclock_delta);
/** v4l2_print_dv_timings() - log the contents of a dv_timings struct /**
* @dev_prefix:device prefix for each log line. * v4l2_print_dv_timings() - log the contents of a dv_timings struct
* @prefix: additional prefix for each log line, may be NULL. * @dev_prefix:device prefix for each log line.
* @t: the timings data. * @prefix: additional prefix for each log line, may be NULL.
* @detailed: if true, give a detailed log. * @t: the timings data.
*/ * @detailed: if true, give a detailed log.
*/
void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix, void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix,
const struct v4l2_dv_timings *t, bool detailed); const struct v4l2_dv_timings *t, bool detailed);
/** v4l2_detect_cvt - detect if the given timings follow the CVT standard /**
* v4l2_detect_cvt - detect if the given timings follow the CVT standard
*
* @frame_height - the total height of the frame (including blanking) in lines. * @frame_height - the total height of the frame (including blanking) in lines.
* @hfreq - the horizontal frequency in Hz. * @hfreq - the horizontal frequency in Hz.
* @vsync - the height of the vertical sync in lines. * @vsync - the height of the vertical sync in lines.
...@@ -131,7 +146,9 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync, ...@@ -131,7 +146,9 @@ bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync,
unsigned active_width, u32 polarities, bool interlaced, unsigned active_width, u32 polarities, bool interlaced,
struct v4l2_dv_timings *fmt); struct v4l2_dv_timings *fmt);
/** v4l2_detect_gtf - detect if the given timings follow the GTF standard /**
* v4l2_detect_gtf - detect if the given timings follow the GTF standard
*
* @frame_height - the total height of the frame (including blanking) in lines. * @frame_height - the total height of the frame (including blanking) in lines.
* @hfreq - the horizontal frequency in Hz. * @hfreq - the horizontal frequency in Hz.
* @vsync - the height of the vertical sync in lines. * @vsync - the height of the vertical sync in lines.
...@@ -153,8 +170,10 @@ bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync, ...@@ -153,8 +170,10 @@ bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync,
u32 polarities, bool interlaced, struct v4l2_fract aspect, u32 polarities, bool interlaced, struct v4l2_fract aspect,
struct v4l2_dv_timings *fmt); struct v4l2_dv_timings *fmt);
/** v4l2_calc_aspect_ratio - calculate the aspect ratio based on bytes /**
* v4l2_calc_aspect_ratio - calculate the aspect ratio based on bytes
* 0x15 and 0x16 from the EDID. * 0x15 and 0x16 from the EDID.
*
* @hor_landscape - byte 0x15 from the EDID. * @hor_landscape - byte 0x15 from the EDID.
* @vert_portrait - byte 0x16 from the EDID. * @vert_portrait - byte 0x16 from the EDID.
* *
......
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