^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * v4l2-dv-timings - Internal header with dv-timings helper functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2013 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #ifndef __V4L2_DV_TIMINGS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #define __V4L2_DV_TIMINGS_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/videodev2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * v4l2_calc_timeperframe - helper function to calculate timeperframe based
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * v4l2_dv_timings fields.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * @t: Timings for the video mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Calculates the expected timeperframe using the pixel clock value and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * horizontal/vertical measures. This means that v4l2_dv_timings structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * must be correctly and fully filled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct v4l2_fract v4l2_calc_timeperframe(const struct v4l2_dv_timings *t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * v4l2_dv_timings_presets: list of all dv_timings presets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) extern const struct v4l2_dv_timings v4l2_dv_timings_presets[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * typedef v4l2_check_dv_timings_fnc - timings check callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * @t: the v4l2_dv_timings struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * @handle: a handle from the driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * Returns true if the given timings are valid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) typedef bool v4l2_check_dv_timings_fnc(const struct v4l2_dv_timings *t, void *handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * v4l2_valid_dv_timings() - are these timings valid?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * @t: the v4l2_dv_timings struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) * @cap: the v4l2_dv_timings_cap capabilities.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) * @fnc: callback to check if this timing is OK. May be NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) * @fnc_handle: a handle that is passed on to @fnc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) * Returns true if the given dv_timings struct is supported by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) * hardware capabilities and the callback function (if non-NULL), returns
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) * false otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) bool v4l2_valid_dv_timings(const struct v4l2_dv_timings *t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) const struct v4l2_dv_timings_cap *cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) v4l2_check_dv_timings_fnc fnc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) void *fnc_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) * v4l2_enum_dv_timings_cap() - Helper function to enumerate possible DV
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) * timings based on capabilities
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * @t: the v4l2_enum_dv_timings struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) * @cap: the v4l2_dv_timings_cap capabilities.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) * @fnc: callback to check if this timing is OK. May be NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) * @fnc_handle: a handle that is passed on to @fnc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) * This enumerates dv_timings using the full list of possible CEA-861 and DMT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) * timings, filtering out any timings that are not supported based on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) * hardware capabilities and the callback function (if non-NULL).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * If a valid timing for the given index is found, it will fill in @t and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * return 0, otherwise it returns -EINVAL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int v4l2_enum_dv_timings_cap(struct v4l2_enum_dv_timings *t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) const struct v4l2_dv_timings_cap *cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) v4l2_check_dv_timings_fnc fnc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) void *fnc_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) * v4l2_find_dv_timings_cap() - Find the closest timings struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) * @t: the v4l2_enum_dv_timings struct.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) * @cap: the v4l2_dv_timings_cap capabilities.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * @pclock_delta: maximum delta between t->pixelclock and the timing struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * under consideration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * @fnc: callback to check if a given timings struct is OK. May be NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * @fnc_handle: a handle that is passed on to @fnc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) * This function tries to map the given timings to an entry in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * full list of possible CEA-861 and DMT timings, filtering out any timings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * that are not supported based on the hardware capabilities and the callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * function (if non-NULL).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * On success it will fill in @t with the found timings and it returns true.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * On failure it will return false.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) bool v4l2_find_dv_timings_cap(struct v4l2_dv_timings *t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) const struct v4l2_dv_timings_cap *cap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) unsigned pclock_delta,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) v4l2_check_dv_timings_fnc fnc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) void *fnc_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * v4l2_find_dv_timings_cea861_vic() - find timings based on CEA-861 VIC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * @t: the timings data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) * @vic: CEA-861 VIC code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) * On success it will fill in @t with the found timings and it returns true.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) * On failure it will return false.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) bool v4l2_find_dv_timings_cea861_vic(struct v4l2_dv_timings *t, u8 vic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) * v4l2_match_dv_timings() - do two timings match?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * @measured: the measured timings data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * @standard: the timings according to the standard.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * @pclock_delta: maximum delta in Hz between standard->pixelclock and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * the measured timings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * @match_reduced_fps: if true, then fail if V4L2_DV_FL_REDUCED_FPS does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) * match.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * Returns true if the two timings match, returns false otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) bool v4l2_match_dv_timings(const struct v4l2_dv_timings *measured,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) const struct v4l2_dv_timings *standard,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) unsigned pclock_delta, bool match_reduced_fps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) * v4l2_print_dv_timings() - log the contents of a dv_timings struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) * @dev_prefix:device prefix for each log line.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) * @prefix: additional prefix for each log line, may be NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) * @t: the timings data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * @detailed: if true, give a detailed log.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) const struct v4l2_dv_timings *t, bool detailed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * v4l2_detect_cvt - detect if the given timings follow the CVT standard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * @frame_height: the total height of the frame (including blanking) in lines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * @hfreq: the horizontal frequency in Hz.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * @vsync: the height of the vertical sync in lines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) * @active_width: active width of image (does not include blanking). This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) * information is needed only in case of version 2 of reduced blanking.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) * In other cases, this parameter does not have any effect on timings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * @polarities: the horizontal and vertical polarities (same as struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) * v4l2_bt_timings polarities).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) * @interlaced: if this flag is true, it indicates interlaced format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) * @fmt: the resulting timings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) * This function will attempt to detect if the given values correspond to a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) * valid CVT format. If so, then it will return true, and fmt will be filled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) * in with the found CVT timings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) bool v4l2_detect_cvt(unsigned frame_height, unsigned hfreq, unsigned vsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) unsigned active_width, u32 polarities, bool interlaced,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) struct v4l2_dv_timings *fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) * v4l2_detect_gtf - detect if the given timings follow the GTF standard
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * @frame_height: the total height of the frame (including blanking) in lines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) * @hfreq: the horizontal frequency in Hz.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) * @vsync: the height of the vertical sync in lines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * @polarities: the horizontal and vertical polarities (same as struct
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * v4l2_bt_timings polarities).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) * @interlaced: if this flag is true, it indicates interlaced format
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * @aspect: preferred aspect ratio. GTF has no method of determining the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * aspect ratio in order to derive the image width from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * image height, so it has to be passed explicitly. Usually
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) * the native screen aspect ratio is used for this. If it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * is not filled in correctly, then 16:9 will be assumed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * @fmt: the resulting timings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) * This function will attempt to detect if the given values correspond to a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * valid GTF format. If so, then it will return true, and fmt will be filled
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * in with the found GTF timings.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) bool v4l2_detect_gtf(unsigned frame_height, unsigned hfreq, unsigned vsync,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) u32 polarities, bool interlaced, struct v4l2_fract aspect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) struct v4l2_dv_timings *fmt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) * v4l2_calc_aspect_ratio - calculate the aspect ratio based on bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * 0x15 and 0x16 from the EDID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * @hor_landscape: byte 0x15 from the EDID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * @vert_portrait: byte 0x16 from the EDID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * Determines the aspect ratio from the EDID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) * See VESA Enhanced EDID standard, release A, rev 2, section 3.6.2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) * "Horizontal and Vertical Screen Size or Aspect Ratio"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) * v4l2_dv_timings_aspect_ratio - calculate the aspect ratio based on the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) * v4l2_dv_timings information.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) * @t: the timings data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) struct v4l2_fract v4l2_dv_timings_aspect_ratio(const struct v4l2_dv_timings *t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * can_reduce_fps - check if conditions for reduced fps are true.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * @bt: v4l2 timing structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * For different timings reduced fps is allowed if the following conditions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * are met:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) * - For CVT timings: if reduced blanking v2 (vsync == 8) is true.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * - For CEA861 timings: if %V4L2_DV_FL_CAN_REDUCE_FPS flag is true.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static inline bool can_reduce_fps(struct v4l2_bt_timings *bt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) if ((bt->standards & V4L2_DV_BT_STD_CVT) && (bt->vsync == 8))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if ((bt->standards & V4L2_DV_BT_STD_CEA861) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) (bt->flags & V4L2_DV_FL_CAN_REDUCE_FPS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) * struct v4l2_hdmi_rx_colorimetry - describes the HDMI colorimetry information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) * @colorspace: enum v4l2_colorspace, the colorspace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * @ycbcr_enc: enum v4l2_ycbcr_encoding, Y'CbCr encoding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * @quantization: enum v4l2_quantization, colorspace quantization
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * @xfer_func: enum v4l2_xfer_func, colorspace transfer function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) struct v4l2_hdmi_colorimetry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) enum v4l2_colorspace colorspace;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) enum v4l2_ycbcr_encoding ycbcr_enc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) enum v4l2_quantization quantization;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) enum v4l2_xfer_func xfer_func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct hdmi_avi_infoframe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) struct hdmi_vendor_infoframe;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct v4l2_hdmi_colorimetry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) v4l2_hdmi_rx_colorimetry(const struct hdmi_avi_infoframe *avi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) const struct hdmi_vendor_infoframe *hdmi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) unsigned int height);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) u16 v4l2_get_edid_phys_addr(const u8 *edid, unsigned int size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) unsigned int *offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) void v4l2_set_edid_phys_addr(u8 *edid, unsigned int size, u16 phys_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) u16 v4l2_phys_addr_for_input(u16 phys_addr, u8 input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) int v4l2_phys_addr_validate(u16 phys_addr, u16 *parent, u16 *port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) #endif
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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