Loading...
Note: File does not exist in v3.1.
1/*
2 * Copyright (c) 2016 Laurent Pinchart <laurent.pinchart@ideasonboard.com>
3 *
4 * DRM core format related functions
5 *
6 * Permission to use, copy, modify, distribute, and sell this software and its
7 * documentation for any purpose is hereby granted without fee, provided that
8 * the above copyright notice appear in all copies and that both that copyright
9 * notice and this permission notice appear in supporting documentation, and
10 * that the name of the copyright holders not be used in advertising or
11 * publicity pertaining to distribution of the software without specific,
12 * written prior permission. The copyright holders make no representations
13 * about the suitability of this software for any purpose. It is provided "as
14 * is" without express or implied warranty.
15 *
16 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
17 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
18 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
19 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
20 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
21 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
22 * OF THIS SOFTWARE.
23 */
24
25#include <linux/bug.h>
26#include <linux/ctype.h>
27#include <linux/export.h>
28#include <linux/kernel.h>
29
30#include <drm/drm_device.h>
31#include <drm/drm_fourcc.h>
32
33/**
34 * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
35 * @bpp: bits per pixels
36 * @depth: bit depth per pixel
37 *
38 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
39 * Useful in fbdev emulation code, since that deals in those values.
40 */
41uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
42{
43 uint32_t fmt = DRM_FORMAT_INVALID;
44
45 switch (bpp) {
46 case 1:
47 if (depth == 1)
48 fmt = DRM_FORMAT_C1;
49 break;
50
51 case 2:
52 if (depth == 2)
53 fmt = DRM_FORMAT_C2;
54 break;
55
56 case 4:
57 if (depth == 4)
58 fmt = DRM_FORMAT_C4;
59 break;
60
61 case 8:
62 if (depth == 8)
63 fmt = DRM_FORMAT_C8;
64 break;
65
66 case 16:
67 switch (depth) {
68 case 15:
69 fmt = DRM_FORMAT_XRGB1555;
70 break;
71 case 16:
72 fmt = DRM_FORMAT_RGB565;
73 break;
74 default:
75 break;
76 }
77 break;
78
79 case 24:
80 if (depth == 24)
81 fmt = DRM_FORMAT_RGB888;
82 break;
83
84 case 32:
85 switch (depth) {
86 case 24:
87 fmt = DRM_FORMAT_XRGB8888;
88 break;
89 case 30:
90 fmt = DRM_FORMAT_XRGB2101010;
91 break;
92 case 32:
93 fmt = DRM_FORMAT_ARGB8888;
94 break;
95 default:
96 break;
97 }
98 break;
99
100 default:
101 break;
102 }
103
104 return fmt;
105}
106EXPORT_SYMBOL(drm_mode_legacy_fb_format);
107
108/**
109 * drm_driver_legacy_fb_format - compute drm fourcc code from legacy description
110 * @dev: DRM device
111 * @bpp: bits per pixels
112 * @depth: bit depth per pixel
113 *
114 * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
115 * Unlike drm_mode_legacy_fb_format() this looks at the drivers mode_config,
116 * and depending on the &drm_mode_config.quirk_addfb_prefer_host_byte_order flag
117 * it returns little endian byte order or host byte order framebuffer formats.
118 */
119uint32_t drm_driver_legacy_fb_format(struct drm_device *dev,
120 uint32_t bpp, uint32_t depth)
121{
122 uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth);
123
124 if (dev->mode_config.quirk_addfb_prefer_host_byte_order) {
125 if (fmt == DRM_FORMAT_XRGB8888)
126 fmt = DRM_FORMAT_HOST_XRGB8888;
127 if (fmt == DRM_FORMAT_ARGB8888)
128 fmt = DRM_FORMAT_HOST_ARGB8888;
129 if (fmt == DRM_FORMAT_RGB565)
130 fmt = DRM_FORMAT_HOST_RGB565;
131 if (fmt == DRM_FORMAT_XRGB1555)
132 fmt = DRM_FORMAT_HOST_XRGB1555;
133 }
134
135 if (dev->mode_config.quirk_addfb_prefer_xbgr_30bpp &&
136 fmt == DRM_FORMAT_XRGB2101010)
137 fmt = DRM_FORMAT_XBGR2101010;
138
139 return fmt;
140}
141EXPORT_SYMBOL(drm_driver_legacy_fb_format);
142
143/*
144 * Internal function to query information for a given format. See
145 * drm_format_info() for the public API.
146 */
147const struct drm_format_info *__drm_format_info(u32 format)
148{
149 static const struct drm_format_info formats[] = {
150 { .format = DRM_FORMAT_C1, .depth = 1, .num_planes = 1,
151 .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
152 { .format = DRM_FORMAT_C2, .depth = 2, .num_planes = 1,
153 .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
154 { .format = DRM_FORMAT_C4, .depth = 4, .num_planes = 1,
155 .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
156 { .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1, .is_color_indexed = true },
157 { .format = DRM_FORMAT_D1, .depth = 1, .num_planes = 1,
158 .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
159 { .format = DRM_FORMAT_D2, .depth = 2, .num_planes = 1,
160 .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
161 { .format = DRM_FORMAT_D4, .depth = 4, .num_planes = 1,
162 .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
163 { .format = DRM_FORMAT_D8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
164 { .format = DRM_FORMAT_R1, .depth = 1, .num_planes = 1,
165 .char_per_block = { 1, }, .block_w = { 8, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
166 { .format = DRM_FORMAT_R2, .depth = 2, .num_planes = 1,
167 .char_per_block = { 1, }, .block_w = { 4, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
168 { .format = DRM_FORMAT_R4, .depth = 4, .num_planes = 1,
169 .char_per_block = { 1, }, .block_w = { 2, }, .block_h = { 1, }, .hsub = 1, .vsub = 1 },
170 { .format = DRM_FORMAT_R8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
171 { .format = DRM_FORMAT_R10, .depth = 10, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
172 { .format = DRM_FORMAT_R12, .depth = 12, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
173 { .format = DRM_FORMAT_RGB332, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
174 { .format = DRM_FORMAT_BGR233, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
175 { .format = DRM_FORMAT_XRGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
176 { .format = DRM_FORMAT_XBGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
177 { .format = DRM_FORMAT_RGBX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
178 { .format = DRM_FORMAT_BGRX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
179 { .format = DRM_FORMAT_ARGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
180 { .format = DRM_FORMAT_ABGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
181 { .format = DRM_FORMAT_RGBA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
182 { .format = DRM_FORMAT_BGRA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
183 { .format = DRM_FORMAT_XRGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
184 { .format = DRM_FORMAT_XBGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
185 { .format = DRM_FORMAT_RGBX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
186 { .format = DRM_FORMAT_BGRX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
187 { .format = DRM_FORMAT_ARGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
188 { .format = DRM_FORMAT_ABGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
189 { .format = DRM_FORMAT_RGBA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
190 { .format = DRM_FORMAT_BGRA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
191 { .format = DRM_FORMAT_RGB565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
192 { .format = DRM_FORMAT_BGR565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
193 { .format = DRM_FORMAT_RGB888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
194 { .format = DRM_FORMAT_BGR888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
195 { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
196 { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
197 { .format = DRM_FORMAT_RGBX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
198 { .format = DRM_FORMAT_BGRX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
199 { .format = DRM_FORMAT_RGB565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
200 { .format = DRM_FORMAT_BGR565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
201 { .format = DRM_FORMAT_XRGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
202 { .format = DRM_FORMAT_XBGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
203 { .format = DRM_FORMAT_RGBX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
204 { .format = DRM_FORMAT_BGRX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
205 { .format = DRM_FORMAT_ARGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
206 { .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
207 { .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
208 { .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
209 { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
210 { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
211 { .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
212 { .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
213 { .format = DRM_FORMAT_XRGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
214 { .format = DRM_FORMAT_XBGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
215 { .format = DRM_FORMAT_ARGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
216 { .format = DRM_FORMAT_ABGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
217 { .format = DRM_FORMAT_AXBXGXRX106106106106, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
218 { .format = DRM_FORMAT_XRGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
219 { .format = DRM_FORMAT_XBGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
220 { .format = DRM_FORMAT_ARGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
221 { .format = DRM_FORMAT_ABGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
222 { .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
223 { .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
224 { .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
225 { .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
226 { .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
227 { .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
228 { .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
229 { .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
230 { .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
231 { .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
232 { .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
233 { .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
234 { .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
235 { .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
236 { .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
237 { .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
238 { .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
239 { .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
240 { .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
241 { .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
242 { .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
243 { .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
244 { .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
245 { .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
246 { .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
247 { .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
248 { .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
249 { .format = DRM_FORMAT_VUY888, .depth = 0, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
250 { .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
251 { .format = DRM_FORMAT_Y210, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
252 { .format = DRM_FORMAT_Y212, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
253 { .format = DRM_FORMAT_Y216, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
254 { .format = DRM_FORMAT_Y410, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
255 { .format = DRM_FORMAT_Y412, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
256 { .format = DRM_FORMAT_Y416, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
257 { .format = DRM_FORMAT_XVYU2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
258 { .format = DRM_FORMAT_XVYU12_16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
259 { .format = DRM_FORMAT_XVYU16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
260 { .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes = 1,
261 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
262 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
263 { .format = DRM_FORMAT_X0L0, .depth = 0, .num_planes = 1,
264 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
265 .hsub = 2, .vsub = 2, .is_yuv = true },
266 { .format = DRM_FORMAT_Y0L2, .depth = 0, .num_planes = 1,
267 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
268 .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
269 { .format = DRM_FORMAT_X0L2, .depth = 0, .num_planes = 1,
270 .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
271 .hsub = 2, .vsub = 2, .is_yuv = true },
272 { .format = DRM_FORMAT_P010, .depth = 0, .num_planes = 2,
273 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
274 .hsub = 2, .vsub = 2, .is_yuv = true},
275 { .format = DRM_FORMAT_P012, .depth = 0, .num_planes = 2,
276 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
277 .hsub = 2, .vsub = 2, .is_yuv = true},
278 { .format = DRM_FORMAT_P016, .depth = 0, .num_planes = 2,
279 .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
280 .hsub = 2, .vsub = 2, .is_yuv = true},
281 { .format = DRM_FORMAT_P210, .depth = 0,
282 .num_planes = 2, .char_per_block = { 2, 4, 0 },
283 .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
284 .vsub = 1, .is_yuv = true },
285 { .format = DRM_FORMAT_VUY101010, .depth = 0,
286 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1,
287 .is_yuv = true },
288 { .format = DRM_FORMAT_YUV420_8BIT, .depth = 0,
289 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
290 .is_yuv = true },
291 { .format = DRM_FORMAT_YUV420_10BIT, .depth = 0,
292 .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
293 .is_yuv = true },
294 { .format = DRM_FORMAT_NV15, .depth = 0,
295 .num_planes = 2, .char_per_block = { 5, 5, 0 },
296 .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
297 .vsub = 2, .is_yuv = true },
298 { .format = DRM_FORMAT_Q410, .depth = 0,
299 .num_planes = 3, .char_per_block = { 2, 2, 2 },
300 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1,
301 .vsub = 1, .is_yuv = true },
302 { .format = DRM_FORMAT_Q401, .depth = 0,
303 .num_planes = 3, .char_per_block = { 2, 2, 2 },
304 .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1,
305 .vsub = 1, .is_yuv = true },
306 { .format = DRM_FORMAT_P030, .depth = 0, .num_planes = 2,
307 .char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 },
308 .hsub = 2, .vsub = 2, .is_yuv = true},
309 };
310
311 unsigned int i;
312
313 for (i = 0; i < ARRAY_SIZE(formats); ++i) {
314 if (formats[i].format == format)
315 return &formats[i];
316 }
317
318 return NULL;
319}
320
321/**
322 * drm_format_info - query information for a given format
323 * @format: pixel format (DRM_FORMAT_*)
324 *
325 * The caller should only pass a supported pixel format to this function.
326 * Unsupported pixel formats will generate a warning in the kernel log.
327 *
328 * Returns:
329 * The instance of struct drm_format_info that describes the pixel format, or
330 * NULL if the format is unsupported.
331 */
332const struct drm_format_info *drm_format_info(u32 format)
333{
334 const struct drm_format_info *info;
335
336 info = __drm_format_info(format);
337 WARN_ON(!info);
338 return info;
339}
340EXPORT_SYMBOL(drm_format_info);
341
342/**
343 * drm_get_format_info - query information for a given framebuffer configuration
344 * @dev: DRM device
345 * @mode_cmd: metadata from the userspace fb creation request
346 *
347 * Returns:
348 * The instance of struct drm_format_info that describes the pixel format, or
349 * NULL if the format is unsupported.
350 */
351const struct drm_format_info *
352drm_get_format_info(struct drm_device *dev,
353 const struct drm_mode_fb_cmd2 *mode_cmd)
354{
355 const struct drm_format_info *info = NULL;
356
357 if (dev->mode_config.funcs->get_format_info)
358 info = dev->mode_config.funcs->get_format_info(mode_cmd);
359
360 if (!info)
361 info = drm_format_info(mode_cmd->pixel_format);
362
363 return info;
364}
365EXPORT_SYMBOL(drm_get_format_info);
366
367/**
368 * drm_format_info_block_width - width in pixels of block.
369 * @info: pixel format info
370 * @plane: plane index
371 *
372 * Returns:
373 * The width in pixels of a block, depending on the plane index.
374 */
375unsigned int drm_format_info_block_width(const struct drm_format_info *info,
376 int plane)
377{
378 if (!info || plane < 0 || plane >= info->num_planes)
379 return 0;
380
381 if (!info->block_w[plane])
382 return 1;
383 return info->block_w[plane];
384}
385EXPORT_SYMBOL(drm_format_info_block_width);
386
387/**
388 * drm_format_info_block_height - height in pixels of a block
389 * @info: pixel format info
390 * @plane: plane index
391 *
392 * Returns:
393 * The height in pixels of a block, depending on the plane index.
394 */
395unsigned int drm_format_info_block_height(const struct drm_format_info *info,
396 int plane)
397{
398 if (!info || plane < 0 || plane >= info->num_planes)
399 return 0;
400
401 if (!info->block_h[plane])
402 return 1;
403 return info->block_h[plane];
404}
405EXPORT_SYMBOL(drm_format_info_block_height);
406
407/**
408 * drm_format_info_bpp - number of bits per pixel
409 * @info: pixel format info
410 * @plane: plane index
411 *
412 * Returns:
413 * The actual number of bits per pixel, depending on the plane index.
414 */
415unsigned int drm_format_info_bpp(const struct drm_format_info *info, int plane)
416{
417 if (!info || plane < 0 || plane >= info->num_planes)
418 return 0;
419
420 return info->char_per_block[plane] * 8 /
421 (drm_format_info_block_width(info, plane) *
422 drm_format_info_block_height(info, plane));
423}
424EXPORT_SYMBOL(drm_format_info_bpp);
425
426/**
427 * drm_format_info_min_pitch - computes the minimum required pitch in bytes
428 * @info: pixel format info
429 * @plane: plane index
430 * @buffer_width: buffer width in pixels
431 *
432 * Returns:
433 * The minimum required pitch in bytes for a buffer by taking into consideration
434 * the pixel format information and the buffer width.
435 */
436uint64_t drm_format_info_min_pitch(const struct drm_format_info *info,
437 int plane, unsigned int buffer_width)
438{
439 if (!info || plane < 0 || plane >= info->num_planes)
440 return 0;
441
442 return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane],
443 drm_format_info_block_width(info, plane) *
444 drm_format_info_block_height(info, plane));
445}
446EXPORT_SYMBOL(drm_format_info_min_pitch);