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Commit be678ad8 authored by Daniel Scally's avatar Daniel Scally Committed by Greg Kroah-Hartman
Browse files

usb: uvc: Enumerate valid values for color matching 



[ 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: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarDaniel Scally <dan.scally@ideasonboard.com>
Link: https://lore.kernel.org/r/20230202114142.300858-2-dan.scally@ideasonboard.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent cef5e33d

include/uapi/linux/usb/video.h

+30 −0
Original line number Diff line number Diff line
@@ -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

 */