Line data Source code
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 : */
41 0 : uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
42 : {
43 0 : uint32_t fmt = DRM_FORMAT_INVALID;
44 :
45 0 : switch (bpp) {
46 : case 8:
47 0 : if (depth == 8)
48 0 : fmt = DRM_FORMAT_C8;
49 : break;
50 :
51 : case 16:
52 0 : switch (depth) {
53 : case 15:
54 0 : fmt = DRM_FORMAT_XRGB1555;
55 0 : break;
56 : case 16:
57 0 : fmt = DRM_FORMAT_RGB565;
58 0 : break;
59 : default:
60 : break;
61 : }
62 : break;
63 :
64 : case 24:
65 0 : if (depth == 24)
66 0 : fmt = DRM_FORMAT_RGB888;
67 : break;
68 :
69 : case 32:
70 : switch (depth) {
71 : case 24:
72 : fmt = DRM_FORMAT_XRGB8888;
73 : break;
74 : case 30:
75 : fmt = DRM_FORMAT_XRGB2101010;
76 : break;
77 : case 32:
78 : fmt = DRM_FORMAT_ARGB8888;
79 : break;
80 : default:
81 : break;
82 : }
83 : break;
84 :
85 : default:
86 : break;
87 : }
88 :
89 0 : return fmt;
90 : }
91 : EXPORT_SYMBOL(drm_mode_legacy_fb_format);
92 :
93 : /**
94 : * drm_driver_legacy_fb_format - compute drm fourcc code from legacy description
95 : * @dev: DRM device
96 : * @bpp: bits per pixels
97 : * @depth: bit depth per pixel
98 : *
99 : * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
100 : * Unlike drm_mode_legacy_fb_format() this looks at the drivers mode_config,
101 : * and depending on the &drm_mode_config.quirk_addfb_prefer_host_byte_order flag
102 : * it returns little endian byte order or host byte order framebuffer formats.
103 : */
104 0 : uint32_t drm_driver_legacy_fb_format(struct drm_device *dev,
105 : uint32_t bpp, uint32_t depth)
106 : {
107 0 : uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth);
108 :
109 0 : if (dev->mode_config.quirk_addfb_prefer_host_byte_order) {
110 0 : if (fmt == DRM_FORMAT_XRGB8888)
111 0 : fmt = DRM_FORMAT_HOST_XRGB8888;
112 0 : if (fmt == DRM_FORMAT_ARGB8888)
113 0 : fmt = DRM_FORMAT_HOST_ARGB8888;
114 0 : if (fmt == DRM_FORMAT_RGB565)
115 0 : fmt = DRM_FORMAT_HOST_RGB565;
116 0 : if (fmt == DRM_FORMAT_XRGB1555)
117 0 : fmt = DRM_FORMAT_HOST_XRGB1555;
118 : }
119 :
120 0 : if (dev->mode_config.quirk_addfb_prefer_xbgr_30bpp &&
121 : fmt == DRM_FORMAT_XRGB2101010)
122 0 : fmt = DRM_FORMAT_XBGR2101010;
123 :
124 0 : return fmt;
125 : }
126 : EXPORT_SYMBOL(drm_driver_legacy_fb_format);
127 :
128 : /*
129 : * Internal function to query information for a given format. See
130 : * drm_format_info() for the public API.
131 : */
132 0 : const struct drm_format_info *__drm_format_info(u32 format)
133 : {
134 : static const struct drm_format_info formats[] = {
135 : { .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
136 : { .format = DRM_FORMAT_R8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
137 : { .format = DRM_FORMAT_R10, .depth = 10, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
138 : { .format = DRM_FORMAT_R12, .depth = 12, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
139 : { .format = DRM_FORMAT_RGB332, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
140 : { .format = DRM_FORMAT_BGR233, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
141 : { .format = DRM_FORMAT_XRGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
142 : { .format = DRM_FORMAT_XBGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
143 : { .format = DRM_FORMAT_RGBX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
144 : { .format = DRM_FORMAT_BGRX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
145 : { .format = DRM_FORMAT_ARGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
146 : { .format = DRM_FORMAT_ABGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
147 : { .format = DRM_FORMAT_RGBA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
148 : { .format = DRM_FORMAT_BGRA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
149 : { .format = DRM_FORMAT_XRGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
150 : { .format = DRM_FORMAT_XBGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
151 : { .format = DRM_FORMAT_RGBX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
152 : { .format = DRM_FORMAT_BGRX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
153 : { .format = DRM_FORMAT_ARGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
154 : { .format = DRM_FORMAT_ABGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
155 : { .format = DRM_FORMAT_RGBA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
156 : { .format = DRM_FORMAT_BGRA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
157 : { .format = DRM_FORMAT_RGB565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
158 : { .format = DRM_FORMAT_BGR565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
159 : { .format = DRM_FORMAT_RGB888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
160 : { .format = DRM_FORMAT_BGR888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
161 : { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
162 : { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
163 : { .format = DRM_FORMAT_RGBX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
164 : { .format = DRM_FORMAT_BGRX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
165 : { .format = DRM_FORMAT_RGB565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
166 : { .format = DRM_FORMAT_BGR565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
167 : { .format = DRM_FORMAT_XRGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
168 : { .format = DRM_FORMAT_XBGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
169 : { .format = DRM_FORMAT_RGBX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
170 : { .format = DRM_FORMAT_BGRX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
171 : { .format = DRM_FORMAT_ARGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
172 : { .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
173 : { .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
174 : { .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
175 : { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
176 : { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
177 : { .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
178 : { .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
179 : { .format = DRM_FORMAT_XRGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
180 : { .format = DRM_FORMAT_XBGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
181 : { .format = DRM_FORMAT_ARGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
182 : { .format = DRM_FORMAT_ABGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
183 : { .format = DRM_FORMAT_AXBXGXRX106106106106, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
184 : { .format = DRM_FORMAT_XRGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
185 : { .format = DRM_FORMAT_XBGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
186 : { .format = DRM_FORMAT_ARGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
187 : { .format = DRM_FORMAT_ABGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
188 : { .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
189 : { .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
190 : { .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
191 : { .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
192 : { .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
193 : { .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
194 : { .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
195 : { .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
196 : { .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
197 : { .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
198 : { .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
199 : { .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
200 : { .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
201 : { .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
202 : { .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
203 : { .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
204 : { .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
205 : { .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
206 : { .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
207 : { .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
208 : { .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
209 : { .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
210 : { .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
211 : { .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
212 : { .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
213 : { .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
214 : { .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
215 : { .format = DRM_FORMAT_VUY888, .depth = 0, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
216 : { .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
217 : { .format = DRM_FORMAT_Y210, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
218 : { .format = DRM_FORMAT_Y212, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
219 : { .format = DRM_FORMAT_Y216, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
220 : { .format = DRM_FORMAT_Y410, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
221 : { .format = DRM_FORMAT_Y412, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
222 : { .format = DRM_FORMAT_Y416, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
223 : { .format = DRM_FORMAT_XVYU2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
224 : { .format = DRM_FORMAT_XVYU12_16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
225 : { .format = DRM_FORMAT_XVYU16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
226 : { .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes = 1,
227 : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
228 : .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
229 : { .format = DRM_FORMAT_X0L0, .depth = 0, .num_planes = 1,
230 : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
231 : .hsub = 2, .vsub = 2, .is_yuv = true },
232 : { .format = DRM_FORMAT_Y0L2, .depth = 0, .num_planes = 1,
233 : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
234 : .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
235 : { .format = DRM_FORMAT_X0L2, .depth = 0, .num_planes = 1,
236 : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
237 : .hsub = 2, .vsub = 2, .is_yuv = true },
238 : { .format = DRM_FORMAT_P010, .depth = 0, .num_planes = 2,
239 : .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
240 : .hsub = 2, .vsub = 2, .is_yuv = true},
241 : { .format = DRM_FORMAT_P012, .depth = 0, .num_planes = 2,
242 : .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
243 : .hsub = 2, .vsub = 2, .is_yuv = true},
244 : { .format = DRM_FORMAT_P016, .depth = 0, .num_planes = 2,
245 : .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
246 : .hsub = 2, .vsub = 2, .is_yuv = true},
247 : { .format = DRM_FORMAT_P210, .depth = 0,
248 : .num_planes = 2, .char_per_block = { 2, 4, 0 },
249 : .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
250 : .vsub = 1, .is_yuv = true },
251 : { .format = DRM_FORMAT_VUY101010, .depth = 0,
252 : .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1,
253 : .is_yuv = true },
254 : { .format = DRM_FORMAT_YUV420_8BIT, .depth = 0,
255 : .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
256 : .is_yuv = true },
257 : { .format = DRM_FORMAT_YUV420_10BIT, .depth = 0,
258 : .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
259 : .is_yuv = true },
260 : { .format = DRM_FORMAT_NV15, .depth = 0,
261 : .num_planes = 2, .char_per_block = { 5, 5, 0 },
262 : .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
263 : .vsub = 2, .is_yuv = true },
264 : { .format = DRM_FORMAT_Q410, .depth = 0,
265 : .num_planes = 3, .char_per_block = { 2, 2, 2 },
266 : .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0,
267 : .vsub = 0, .is_yuv = true },
268 : { .format = DRM_FORMAT_Q401, .depth = 0,
269 : .num_planes = 3, .char_per_block = { 2, 2, 2 },
270 : .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 0,
271 : .vsub = 0, .is_yuv = true },
272 : { .format = DRM_FORMAT_P030, .depth = 0, .num_planes = 2,
273 : .char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 },
274 : .hsub = 2, .vsub = 2, .is_yuv = true},
275 : };
276 :
277 : unsigned int i;
278 :
279 0 : for (i = 0; i < ARRAY_SIZE(formats); ++i) {
280 0 : if (formats[i].format == format)
281 0 : return &formats[i];
282 : }
283 :
284 : return NULL;
285 : }
286 :
287 : /**
288 : * drm_format_info - query information for a given format
289 : * @format: pixel format (DRM_FORMAT_*)
290 : *
291 : * The caller should only pass a supported pixel format to this function.
292 : * Unsupported pixel formats will generate a warning in the kernel log.
293 : *
294 : * Returns:
295 : * The instance of struct drm_format_info that describes the pixel format, or
296 : * NULL if the format is unsupported.
297 : */
298 0 : const struct drm_format_info *drm_format_info(u32 format)
299 : {
300 : const struct drm_format_info *info;
301 :
302 0 : info = __drm_format_info(format);
303 0 : WARN_ON(!info);
304 0 : return info;
305 : }
306 : EXPORT_SYMBOL(drm_format_info);
307 :
308 : /**
309 : * drm_get_format_info - query information for a given framebuffer configuration
310 : * @dev: DRM device
311 : * @mode_cmd: metadata from the userspace fb creation request
312 : *
313 : * Returns:
314 : * The instance of struct drm_format_info that describes the pixel format, or
315 : * NULL if the format is unsupported.
316 : */
317 : const struct drm_format_info *
318 0 : drm_get_format_info(struct drm_device *dev,
319 : const struct drm_mode_fb_cmd2 *mode_cmd)
320 : {
321 0 : const struct drm_format_info *info = NULL;
322 :
323 0 : if (dev->mode_config.funcs->get_format_info)
324 0 : info = dev->mode_config.funcs->get_format_info(mode_cmd);
325 :
326 0 : if (!info)
327 0 : info = drm_format_info(mode_cmd->pixel_format);
328 :
329 0 : return info;
330 : }
331 : EXPORT_SYMBOL(drm_get_format_info);
332 :
333 : /**
334 : * drm_format_info_block_width - width in pixels of block.
335 : * @info: pixel format info
336 : * @plane: plane index
337 : *
338 : * Returns:
339 : * The width in pixels of a block, depending on the plane index.
340 : */
341 0 : unsigned int drm_format_info_block_width(const struct drm_format_info *info,
342 : int plane)
343 : {
344 0 : if (!info || plane < 0 || plane >= info->num_planes)
345 : return 0;
346 :
347 0 : if (!info->block_w[plane])
348 : return 1;
349 0 : return info->block_w[plane];
350 : }
351 : EXPORT_SYMBOL(drm_format_info_block_width);
352 :
353 : /**
354 : * drm_format_info_block_height - height in pixels of a block
355 : * @info: pixel format info
356 : * @plane: plane index
357 : *
358 : * Returns:
359 : * The height in pixels of a block, depending on the plane index.
360 : */
361 0 : unsigned int drm_format_info_block_height(const struct drm_format_info *info,
362 : int plane)
363 : {
364 0 : if (!info || plane < 0 || plane >= info->num_planes)
365 : return 0;
366 :
367 0 : if (!info->block_h[plane])
368 : return 1;
369 0 : return info->block_h[plane];
370 : }
371 : EXPORT_SYMBOL(drm_format_info_block_height);
372 :
373 : /**
374 : * drm_format_info_min_pitch - computes the minimum required pitch in bytes
375 : * @info: pixel format info
376 : * @plane: plane index
377 : * @buffer_width: buffer width in pixels
378 : *
379 : * Returns:
380 : * The minimum required pitch in bytes for a buffer by taking into consideration
381 : * the pixel format information and the buffer width.
382 : */
383 0 : uint64_t drm_format_info_min_pitch(const struct drm_format_info *info,
384 : int plane, unsigned int buffer_width)
385 : {
386 0 : if (!info || plane < 0 || plane >= info->num_planes)
387 : return 0;
388 :
389 0 : return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane],
390 : drm_format_info_block_width(info, plane) *
391 : drm_format_info_block_height(info, plane));
392 : }
393 : EXPORT_SYMBOL(drm_format_info_min_pitch);
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