diff options
Diffstat (limited to 'include/media')
| -rw-r--r-- | include/media/v4l2-dv-timings.h | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/include/media/v4l2-dv-timings.h b/include/media/v4l2-dv-timings.h index bd59df8125c6..4becc6716393 100644 --- a/include/media/v4l2-dv-timings.h +++ b/include/media/v4l2-dv-timings.h @@ -27,46 +27,68 @@ */ extern const struct v4l2_dv_timings v4l2_dv_timings_presets[]; +/** v4l2_check_dv_timings_fnc - timings check callback + * @t: the v4l2_dv_timings struct. + * @handle: a handle from the driver. + * + * Returns true if the given timings are valid. + */ +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. * @cap: the v4l2_dv_timings_cap capabilities. + * @fnc: callback to check if this timing is OK. May be NULL. + * @fnc_handle: a handle that is passed on to @fnc. * * Returns true if the given dv_timings struct is supported by the - * hardware capabilities, returns false otherwise. + * hardware capabilities and the callback function (if non-NULL), returns + * false otherwise. */ 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, + 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. * @cap: the v4l2_dv_timings_cap capabilities. + * @fnc: callback to check if this timing is OK. May be NULL. + * @fnc_handle: a handle that is passed on to @fnc. * * This enumerates dv_timings using the full list of possible CEA-861 and DMT * timings, filtering out any timings that are not supported based on the - * hardware capabilities. + * 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, - const struct v4l2_dv_timings_cap *cap); + const struct v4l2_dv_timings_cap *cap, + v4l2_check_dv_timings_fnc fnc, + void *fnc_handle); /** v4l2_find_dv_timings_cap() - Find the closest timings struct * @t: the v4l2_enum_dv_timings struct. * @cap: the v4l2_dv_timings_cap capabilities. * @pclock_delta: maximum delta between t->pixelclock and the timing struct * under consideration. + * @fnc: callback to check if a given timings struct is OK. May be NULL. + * @fnc_handle: a handle that is passed on to @fnc. * * This function tries to map the given timings to an entry in the * full list of possible CEA-861 and DMT timings, filtering out any timings - * that are not supported based on the hardware capabilities. + * that are not supported based on the hardware capabilities and the callback + * function (if non-NULL). * * 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, const struct v4l2_dv_timings_cap *cap, - unsigned pclock_delta); + unsigned pclock_delta, + v4l2_check_dv_timings_fnc fnc, + void *fnc_handle); /** v4l2_match_dv_timings() - do two timings match? * @measured: the measured timings data. |