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 1:
47 0 : if (depth == 1)
48 0 : fmt = DRM_FORMAT_C1;
49 : break;
50 :
51 : case 2:
52 0 : if (depth == 2)
53 0 : fmt = DRM_FORMAT_C2;
54 : break;
55 :
56 : case 4:
57 0 : if (depth == 4)
58 0 : fmt = DRM_FORMAT_C4;
59 : break;
60 :
61 : case 8:
62 0 : if (depth == 8)
63 0 : fmt = DRM_FORMAT_C8;
64 : break;
65 :
66 : case 16:
67 0 : switch (depth) {
68 : case 15:
69 0 : fmt = DRM_FORMAT_XRGB1555;
70 0 : break;
71 : case 16:
72 0 : fmt = DRM_FORMAT_RGB565;
73 0 : break;
74 : default:
75 : break;
76 : }
77 : break;
78 :
79 : case 24:
80 0 : if (depth == 24)
81 0 : 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 0 : return fmt;
105 : }
106 : EXPORT_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 : */
119 0 : uint32_t drm_driver_legacy_fb_format(struct drm_device *dev,
120 : uint32_t bpp, uint32_t depth)
121 : {
122 0 : uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth);
123 :
124 0 : if (dev->mode_config.quirk_addfb_prefer_host_byte_order) {
125 0 : if (fmt == DRM_FORMAT_XRGB8888)
126 0 : fmt = DRM_FORMAT_HOST_XRGB8888;
127 0 : if (fmt == DRM_FORMAT_ARGB8888)
128 0 : fmt = DRM_FORMAT_HOST_ARGB8888;
129 0 : if (fmt == DRM_FORMAT_RGB565)
130 0 : fmt = DRM_FORMAT_HOST_RGB565;
131 0 : if (fmt == DRM_FORMAT_XRGB1555)
132 0 : fmt = DRM_FORMAT_HOST_XRGB1555;
133 : }
134 :
135 0 : if (dev->mode_config.quirk_addfb_prefer_xbgr_30bpp &&
136 : fmt == DRM_FORMAT_XRGB2101010)
137 0 : fmt = DRM_FORMAT_XBGR2101010;
138 :
139 0 : return fmt;
140 : }
141 : EXPORT_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 : */
147 44 : const 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 : #ifdef __BIG_ENDIAN
194 : { .format = DRM_FORMAT_XRGB1555 | DRM_FORMAT_BIG_ENDIAN, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
195 : { .format = DRM_FORMAT_RGB565 | DRM_FORMAT_BIG_ENDIAN, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
196 : #endif
197 : { .format = DRM_FORMAT_RGB888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
198 : { .format = DRM_FORMAT_BGR888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
199 : { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
200 : { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
201 : { .format = DRM_FORMAT_RGBX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
202 : { .format = DRM_FORMAT_BGRX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
203 : { .format = DRM_FORMAT_RGB565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
204 : { .format = DRM_FORMAT_BGR565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
205 : { .format = DRM_FORMAT_XRGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
206 : { .format = DRM_FORMAT_XBGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
207 : { .format = DRM_FORMAT_RGBX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
208 : { .format = DRM_FORMAT_BGRX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
209 : { .format = DRM_FORMAT_ARGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
210 : { .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
211 : { .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
212 : { .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
213 : { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
214 : { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
215 : { .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
216 : { .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
217 : { .format = DRM_FORMAT_XRGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
218 : { .format = DRM_FORMAT_XBGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
219 : { .format = DRM_FORMAT_ARGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
220 : { .format = DRM_FORMAT_ABGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
221 : { .format = DRM_FORMAT_AXBXGXRX106106106106, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
222 : { .format = DRM_FORMAT_XRGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
223 : { .format = DRM_FORMAT_XBGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
224 : { .format = DRM_FORMAT_ARGB16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
225 : { .format = DRM_FORMAT_ABGR16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
226 : { .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
227 : { .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
228 : { .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
229 : { .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
230 : { .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
231 : { .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
232 : { .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
233 : { .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
234 : { .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
235 : { .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
236 : { .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
237 : { .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
238 : { .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
239 : { .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
240 : { .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
241 : { .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
242 : { .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
243 : { .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
244 : { .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
245 : { .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
246 : { .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
247 : { .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
248 : { .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
249 : { .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
250 : { .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
251 : { .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
252 : { .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
253 : { .format = DRM_FORMAT_VUY888, .depth = 0, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
254 : { .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
255 : { .format = DRM_FORMAT_Y210, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
256 : { .format = DRM_FORMAT_Y212, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
257 : { .format = DRM_FORMAT_Y216, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
258 : { .format = DRM_FORMAT_Y410, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
259 : { .format = DRM_FORMAT_Y412, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
260 : { .format = DRM_FORMAT_Y416, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
261 : { .format = DRM_FORMAT_XVYU2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
262 : { .format = DRM_FORMAT_XVYU12_16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
263 : { .format = DRM_FORMAT_XVYU16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
264 : { .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes = 1,
265 : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
266 : .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
267 : { .format = DRM_FORMAT_X0L0, .depth = 0, .num_planes = 1,
268 : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
269 : .hsub = 2, .vsub = 2, .is_yuv = true },
270 : { .format = DRM_FORMAT_Y0L2, .depth = 0, .num_planes = 1,
271 : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
272 : .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
273 : { .format = DRM_FORMAT_X0L2, .depth = 0, .num_planes = 1,
274 : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
275 : .hsub = 2, .vsub = 2, .is_yuv = true },
276 : { .format = DRM_FORMAT_P010, .depth = 0, .num_planes = 2,
277 : .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
278 : .hsub = 2, .vsub = 2, .is_yuv = true},
279 : { .format = DRM_FORMAT_P012, .depth = 0, .num_planes = 2,
280 : .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
281 : .hsub = 2, .vsub = 2, .is_yuv = true},
282 : { .format = DRM_FORMAT_P016, .depth = 0, .num_planes = 2,
283 : .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
284 : .hsub = 2, .vsub = 2, .is_yuv = true},
285 : { .format = DRM_FORMAT_P210, .depth = 0,
286 : .num_planes = 2, .char_per_block = { 2, 4, 0 },
287 : .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
288 : .vsub = 1, .is_yuv = true },
289 : { .format = DRM_FORMAT_VUY101010, .depth = 0,
290 : .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1,
291 : .is_yuv = true },
292 : { .format = DRM_FORMAT_YUV420_8BIT, .depth = 0,
293 : .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
294 : .is_yuv = true },
295 : { .format = DRM_FORMAT_YUV420_10BIT, .depth = 0,
296 : .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
297 : .is_yuv = true },
298 : { .format = DRM_FORMAT_NV15, .depth = 0,
299 : .num_planes = 2, .char_per_block = { 5, 5, 0 },
300 : .block_w = { 4, 2, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
301 : .vsub = 2, .is_yuv = true },
302 : { .format = DRM_FORMAT_Q410, .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_Q401, .depth = 0,
307 : .num_planes = 3, .char_per_block = { 2, 2, 2 },
308 : .block_w = { 1, 1, 1 }, .block_h = { 1, 1, 1 }, .hsub = 1,
309 : .vsub = 1, .is_yuv = true },
310 : { .format = DRM_FORMAT_P030, .depth = 0, .num_planes = 2,
311 : .char_per_block = { 4, 8, 0 }, .block_w = { 3, 3, 0 }, .block_h = { 1, 1, 0 },
312 : .hsub = 2, .vsub = 2, .is_yuv = true},
313 : };
314 :
315 : unsigned int i;
316 :
317 13400 : for (i = 0; i < ARRAY_SIZE(formats); ++i) {
318 13399 : if (formats[i].format == format)
319 240 : return &formats[i];
320 : }
321 :
322 : return NULL;
323 : }
324 :
325 : /**
326 : * drm_format_info - query information for a given format
327 : * @format: pixel format (DRM_FORMAT_*)
328 : *
329 : * The caller should only pass a supported pixel format to this function.
330 : * Unsupported pixel formats will generate a warning in the kernel log.
331 : *
332 : * Returns:
333 : * The instance of struct drm_format_info that describes the pixel format, or
334 : * NULL if the format is unsupported.
335 : */
336 197 : const struct drm_format_info *drm_format_info(u32 format)
337 : {
338 : const struct drm_format_info *info;
339 :
340 197 : info = __drm_format_info(format);
341 197 : WARN_ON(!info);
342 197 : return info;
343 : }
344 : EXPORT_SYMBOL(drm_format_info);
345 :
346 : /**
347 : * drm_get_format_info - query information for a given framebuffer configuration
348 : * @dev: DRM device
349 : * @mode_cmd: metadata from the userspace fb creation request
350 : *
351 : * Returns:
352 : * The instance of struct drm_format_info that describes the pixel format, or
353 : * NULL if the format is unsupported.
354 : */
355 : const struct drm_format_info *
356 43 : drm_get_format_info(struct drm_device *dev,
357 : const struct drm_mode_fb_cmd2 *mode_cmd)
358 : {
359 43 : const struct drm_format_info *info = NULL;
360 :
361 43 : if (dev->mode_config.funcs->get_format_info)
362 0 : info = dev->mode_config.funcs->get_format_info(mode_cmd);
363 :
364 43 : if (!info)
365 43 : info = drm_format_info(mode_cmd->pixel_format);
366 :
367 43 : return info;
368 : }
369 : EXPORT_SYMBOL(drm_get_format_info);
370 :
371 : /**
372 : * drm_format_info_block_width - width in pixels of block.
373 : * @info: pixel format info
374 : * @plane: plane index
375 : *
376 : * Returns:
377 : * The width in pixels of a block, depending on the plane index.
378 : */
379 18 : unsigned int drm_format_info_block_width(const struct drm_format_info *info,
380 : int plane)
381 : {
382 18 : if (!info || plane < 0 || plane >= info->num_planes)
383 : return 0;
384 :
385 489 : if (!info->block_w[plane])
386 : return 1;
387 45 : return info->block_w[plane];
388 : }
389 : EXPORT_SYMBOL(drm_format_info_block_width);
390 :
391 : /**
392 : * drm_format_info_block_height - height in pixels of a block
393 : * @info: pixel format info
394 : * @plane: plane index
395 : *
396 : * Returns:
397 : * The height in pixels of a block, depending on the plane index.
398 : */
399 18 : unsigned int drm_format_info_block_height(const struct drm_format_info *info,
400 : int plane)
401 : {
402 18 : if (!info || plane < 0 || plane >= info->num_planes)
403 : return 0;
404 :
405 489 : if (!info->block_h[plane])
406 : return 1;
407 45 : return info->block_h[plane];
408 : }
409 : EXPORT_SYMBOL(drm_format_info_block_height);
410 :
411 : /**
412 : * drm_format_info_bpp - number of bits per pixel
413 : * @info: pixel format info
414 : * @plane: plane index
415 : *
416 : * Returns:
417 : * The actual number of bits per pixel, depending on the plane index.
418 : */
419 28 : unsigned int drm_format_info_bpp(const struct drm_format_info *info, int plane)
420 : {
421 28 : if (!info || plane < 0 || plane >= info->num_planes)
422 : return 0;
423 :
424 56 : return info->char_per_block[plane] * 8 /
425 56 : (drm_format_info_block_width(info, plane) *
426 28 : drm_format_info_block_height(info, plane));
427 : }
428 : EXPORT_SYMBOL(drm_format_info_bpp);
429 :
430 : /**
431 : * drm_format_info_min_pitch - computes the minimum required pitch in bytes
432 : * @info: pixel format info
433 : * @plane: plane index
434 : * @buffer_width: buffer width in pixels
435 : *
436 : * Returns:
437 : * The minimum required pitch in bytes for a buffer by taking into consideration
438 : * the pixel format information and the buffer width.
439 : */
440 244 : uint64_t drm_format_info_min_pitch(const struct drm_format_info *info,
441 : int plane, unsigned int buffer_width)
442 : {
443 244 : if (!info || plane < 0 || plane >= info->num_planes)
444 : return 0;
445 :
446 1135 : return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane],
447 : drm_format_info_block_width(info, plane) *
448 : drm_format_info_block_height(info, plane));
449 : }
450 : EXPORT_SYMBOL(drm_format_info_min_pitch);
|
