1 /* 2 * Copyright (c) 2016 Intel Corporation 3 * 4 * Permission to use, copy, modify, distribute, and sell this software and its 5 * documentation for any purpose is hereby granted without fee, provided that 6 * the above copyright notice appear in all copies and that both that copyright 7 * notice and this permission notice appear in supporting documentation, and 8 * that the name of the copyright holders not be used in advertising or 9 * publicity pertaining to distribution of the software without specific, 10 * written prior permission. The copyright holders make no representations 11 * about the suitability of this software for any purpose. It is provided "as 12 * is" without express or implied warranty. 13 * 14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 15 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 16 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 17 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 18 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 19 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 20 * OF THIS SOFTWARE. 21 */ 22 23 #ifndef __DRM_COLOR_MGMT_H__ 24 #define __DRM_COLOR_MGMT_H__ 25 26 #include <linux/bitops.h> 27 28 enum drm_color_encoding { 29 DRM_COLOR_YCBCR_BT601, 30 DRM_COLOR_YCBCR_BT709, 31 DRM_COLOR_YCBCR_BT2020, 32 DRM_COLOR_ENCODING_MAX, 33 }; 34 35 enum drm_color_range { 36 DRM_COLOR_YCBCR_LIMITED_RANGE, 37 DRM_COLOR_YCBCR_FULL_RANGE, 38 DRM_COLOR_RANGE_MAX, 39 }; 40 41 /** 42 * enum drm_color_lut_tests - hw-specific LUT tests to perform 43 * 44 * The drm_color_lut_check() function takes a bitmask of the values here to 45 * determine which tests to apply to a userspace-provided LUT. 46 */ 47 enum drm_color_lut_tests { 48 /** 49 * @DRM_COLOR_LUT_EQUAL_CHANNELS: 50 * 51 * Checks whether the entries of a LUT all have equal values for the 52 * red, green, and blue channels. Intended for hardware that only 53 * accepts a single value per LUT entry and assumes that value applies 54 * to all three color components. 55 */ 56 DRM_COLOR_LUT_EQUAL_CHANNELS = BIT(0), 57 58 /** 59 * @DRM_COLOR_LUT_NON_DECREASING: 60 * 61 * Checks whether the entries of a LUT are always flat or increasing 62 * (never decreasing). 63 */ 64 DRM_COLOR_LUT_NON_DECREASING = BIT(1), 65 }; 66 67 #endif /* __DRM_COLOR_MGMT_H__ */ 68