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/ctype.h>
27
28 struct drm_crtc;
29 struct drm_plane;
30
31 uint32_t drm_color_lut_extract(uint32_t user_input, uint32_t bit_precision);
32
33 void drm_crtc_enable_color_mgmt(struct drm_crtc *crtc,
34 uint degamma_lut_size,
35 bool has_ctm,
36 uint gamma_lut_size);
37
38 int drm_mode_crtc_set_gamma_size(struct drm_crtc *crtc,
39 int gamma_size);
40
41 /**
42 * drm_color_lut_size - calculate the number of entries in the LUT
43 * @blob: blob containing the LUT
44 *
45 * Returns:
46 * The number of entries in the color LUT stored in @blob.
47 */
drm_color_lut_size(const struct drm_property_blob * blob)48 static inline int drm_color_lut_size(const struct drm_property_blob *blob)
49 {
50 return blob->length / sizeof(struct drm_color_lut);
51 }
52
53 enum drm_color_encoding {
54 DRM_COLOR_YCBCR_BT601,
55 DRM_COLOR_YCBCR_BT709,
56 DRM_COLOR_YCBCR_BT2020,
57 DRM_COLOR_ENCODING_MAX,
58 };
59
60 enum drm_color_range {
61 DRM_COLOR_YCBCR_LIMITED_RANGE,
62 DRM_COLOR_YCBCR_FULL_RANGE,
63 DRM_COLOR_RANGE_MAX,
64 };
65
66 int drm_plane_create_color_properties(struct drm_plane *plane,
67 u32 supported_encodings,
68 u32 supported_ranges,
69 enum drm_color_encoding default_encoding,
70 enum drm_color_range default_range);
71 #endif
72