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    Subject[PATCH AUTOSEL 5.15 35/50] usb: uvc: Enumerate valid values for color matching
    Date
    From: Daniel Scally <dan.scally@ideasonboard.com>

    [ Upstream commit e16cab9c1596e251761d2bfb5e1467950d616963 ]

    The color matching descriptors defined in the UVC Specification
    contain 3 fields with discrete numeric values representing particular
    settings. Enumerate those values so that later code setting them can
    be more readable.

    Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
    Signed-off-by: Daniel Scally <dan.scally@ideasonboard.com>
    Link: https://lore.kernel.org/r/20230202114142.300858-2-dan.scally@ideasonboard.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    include/uapi/linux/usb/video.h | 30 ++++++++++++++++++++++++++++++
    1 file changed, 30 insertions(+)

    diff --git a/include/uapi/linux/usb/video.h b/include/uapi/linux/usb/video.h
    index bfdae12cdacf8..c58854fb7d94a 100644
    --- a/include/uapi/linux/usb/video.h
    +++ b/include/uapi/linux/usb/video.h
    @@ -179,6 +179,36 @@
    #define UVC_CONTROL_CAP_AUTOUPDATE (1 << 3)
    #define UVC_CONTROL_CAP_ASYNCHRONOUS (1 << 4)

    +/* 3.9.2.6 Color Matching Descriptor Values */
    +enum uvc_color_primaries_values {
    + UVC_COLOR_PRIMARIES_UNSPECIFIED,
    + UVC_COLOR_PRIMARIES_BT_709_SRGB,
    + UVC_COLOR_PRIMARIES_BT_470_2_M,
    + UVC_COLOR_PRIMARIES_BT_470_2_B_G,
    + UVC_COLOR_PRIMARIES_SMPTE_170M,
    + UVC_COLOR_PRIMARIES_SMPTE_240M,
    +};
    +
    +enum uvc_transfer_characteristics_values {
    + UVC_TRANSFER_CHARACTERISTICS_UNSPECIFIED,
    + UVC_TRANSFER_CHARACTERISTICS_BT_709,
    + UVC_TRANSFER_CHARACTERISTICS_BT_470_2_M,
    + UVC_TRANSFER_CHARACTERISTICS_BT_470_2_B_G,
    + UVC_TRANSFER_CHARACTERISTICS_SMPTE_170M,
    + UVC_TRANSFER_CHARACTERISTICS_SMPTE_240M,
    + UVC_TRANSFER_CHARACTERISTICS_LINEAR,
    + UVC_TRANSFER_CHARACTERISTICS_SRGB,
    +};
    +
    +enum uvc_matrix_coefficients {
    + UVC_MATRIX_COEFFICIENTS_UNSPECIFIED,
    + UVC_MATRIX_COEFFICIENTS_BT_709,
    + UVC_MATRIX_COEFFICIENTS_FCC,
    + UVC_MATRIX_COEFFICIENTS_BT_470_2_B_G,
    + UVC_MATRIX_COEFFICIENTS_SMPTE_170M,
    + UVC_MATRIX_COEFFICIENTS_SMPTE_240M,
    +};
    +
    /* ------------------------------------------------------------------------
    * UVC structures
    */
    --
    2.39.2
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