Branch data 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 : 0 : static char printable_char(int c)
34 : : {
35 [ # # # # : 0 : return isascii(c) && isprint(c) ? c : '?';
# # ]
36 : : }
37 : :
38 : : /**
39 : : * drm_mode_legacy_fb_format - compute drm fourcc code from legacy description
40 : : * @bpp: bits per pixels
41 : : * @depth: bit depth per pixel
42 : : *
43 : : * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
44 : : * Useful in fbdev emulation code, since that deals in those values.
45 : : */
46 : 0 : uint32_t drm_mode_legacy_fb_format(uint32_t bpp, uint32_t depth)
47 : : {
48 : 0 : uint32_t fmt = DRM_FORMAT_INVALID;
49 : :
50 [ # # # # : 0 : switch (bpp) {
# ]
51 : 0 : case 8:
52 [ # # ]: 0 : if (depth == 8)
53 : 0 : fmt = DRM_FORMAT_C8;
54 : : break;
55 : :
56 : 0 : case 16:
57 [ # # # ]: 0 : switch (depth) {
58 : 0 : case 15:
59 : 0 : fmt = DRM_FORMAT_XRGB1555;
60 : 0 : break;
61 : 0 : case 16:
62 : 0 : fmt = DRM_FORMAT_RGB565;
63 : 0 : break;
64 : : default:
65 : : break;
66 : : }
67 : : break;
68 : :
69 : 0 : case 24:
70 [ # # ]: 0 : if (depth == 24)
71 : 0 : fmt = DRM_FORMAT_RGB888;
72 : : break;
73 : :
74 : 0 : case 32:
75 [ # # ]: 0 : switch (depth) {
76 : : case 24:
77 : : fmt = DRM_FORMAT_XRGB8888;
78 : : break;
79 : : case 30:
80 : : fmt = DRM_FORMAT_XRGB2101010;
81 : : break;
82 : : case 32:
83 : : fmt = DRM_FORMAT_ARGB8888;
84 : : break;
85 : : default:
86 : : break;
87 : : }
88 : : break;
89 : :
90 : : default:
91 : : break;
92 : : }
93 : :
94 : 0 : return fmt;
95 : : }
96 : : EXPORT_SYMBOL(drm_mode_legacy_fb_format);
97 : :
98 : : /**
99 : : * drm_driver_legacy_fb_format - compute drm fourcc code from legacy description
100 : : * @dev: DRM device
101 : : * @bpp: bits per pixels
102 : : * @depth: bit depth per pixel
103 : : *
104 : : * Computes a drm fourcc pixel format code for the given @bpp/@depth values.
105 : : * Unlike drm_mode_legacy_fb_format() this looks at the drivers mode_config,
106 : : * and depending on the &drm_mode_config.quirk_addfb_prefer_host_byte_order flag
107 : : * it returns little endian byte order or host byte order framebuffer formats.
108 : : */
109 : 0 : uint32_t drm_driver_legacy_fb_format(struct drm_device *dev,
110 : : uint32_t bpp, uint32_t depth)
111 : : {
112 : 0 : uint32_t fmt = drm_mode_legacy_fb_format(bpp, depth);
113 : :
114 [ # # ]: 0 : if (dev->mode_config.quirk_addfb_prefer_host_byte_order) {
115 [ # # ]: 0 : if (fmt == DRM_FORMAT_XRGB8888)
116 : : fmt = DRM_FORMAT_HOST_XRGB8888;
117 [ # # ]: 0 : if (fmt == DRM_FORMAT_ARGB8888)
118 : : fmt = DRM_FORMAT_HOST_ARGB8888;
119 [ # # ]: 0 : if (fmt == DRM_FORMAT_RGB565)
120 : : fmt = DRM_FORMAT_HOST_RGB565;
121 [ # # ]: 0 : if (fmt == DRM_FORMAT_XRGB1555)
122 : 0 : fmt = DRM_FORMAT_HOST_XRGB1555;
123 : : }
124 : :
125 [ # # # # ]: 0 : if (dev->mode_config.quirk_addfb_prefer_xbgr_30bpp &&
126 : : fmt == DRM_FORMAT_XRGB2101010)
127 : 0 : fmt = DRM_FORMAT_XBGR2101010;
128 : :
129 : 0 : return fmt;
130 : : }
131 : : EXPORT_SYMBOL(drm_driver_legacy_fb_format);
132 : :
133 : : /**
134 : : * drm_get_format_name - fill a string with a drm fourcc format's name
135 : : * @format: format to compute name of
136 : : * @buf: caller-supplied buffer
137 : : */
138 : 0 : const char *drm_get_format_name(uint32_t format, struct drm_format_name_buf *buf)
139 : : {
140 : 0 : snprintf(buf->str, sizeof(buf->str),
141 : : "%c%c%c%c %s-endian (0x%08x)",
142 [ # # ]: 0 : printable_char(format & 0xff),
143 [ # # ]: 0 : printable_char((format >> 8) & 0xff),
144 [ # # ]: 0 : printable_char((format >> 16) & 0xff),
145 [ # # ]: 0 : printable_char((format >> 24) & 0x7f),
146 [ # # ]: 0 : format & DRM_FORMAT_BIG_ENDIAN ? "big" : "little",
147 : : format);
148 : :
149 : 0 : return buf->str;
150 : : }
151 : : EXPORT_SYMBOL(drm_get_format_name);
152 : :
153 : : /*
154 : : * Internal function to query information for a given format. See
155 : : * drm_format_info() for the public API.
156 : : */
157 : 0 : const struct drm_format_info *__drm_format_info(u32 format)
158 : : {
159 : 0 : static const struct drm_format_info formats[] = {
160 : : { .format = DRM_FORMAT_C8, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
161 : : { .format = DRM_FORMAT_RGB332, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
162 : : { .format = DRM_FORMAT_BGR233, .depth = 8, .num_planes = 1, .cpp = { 1, 0, 0 }, .hsub = 1, .vsub = 1 },
163 : : { .format = DRM_FORMAT_XRGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
164 : : { .format = DRM_FORMAT_XBGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
165 : : { .format = DRM_FORMAT_RGBX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
166 : : { .format = DRM_FORMAT_BGRX4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
167 : : { .format = DRM_FORMAT_ARGB4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
168 : : { .format = DRM_FORMAT_ABGR4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
169 : : { .format = DRM_FORMAT_RGBA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
170 : : { .format = DRM_FORMAT_BGRA4444, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
171 : : { .format = DRM_FORMAT_XRGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
172 : : { .format = DRM_FORMAT_XBGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
173 : : { .format = DRM_FORMAT_RGBX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
174 : : { .format = DRM_FORMAT_BGRX5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
175 : : { .format = DRM_FORMAT_ARGB1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
176 : : { .format = DRM_FORMAT_ABGR1555, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
177 : : { .format = DRM_FORMAT_RGBA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
178 : : { .format = DRM_FORMAT_BGRA5551, .depth = 15, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
179 : : { .format = DRM_FORMAT_RGB565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
180 : : { .format = DRM_FORMAT_BGR565, .depth = 16, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 1, .vsub = 1 },
181 : : { .format = DRM_FORMAT_RGB888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
182 : : { .format = DRM_FORMAT_BGR888, .depth = 24, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1 },
183 : : { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
184 : : { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
185 : : { .format = DRM_FORMAT_RGBX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
186 : : { .format = DRM_FORMAT_BGRX8888, .depth = 24, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
187 : : { .format = DRM_FORMAT_RGB565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
188 : : { .format = DRM_FORMAT_BGR565_A8, .depth = 24, .num_planes = 2, .cpp = { 2, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
189 : : { .format = DRM_FORMAT_XRGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
190 : : { .format = DRM_FORMAT_XBGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
191 : : { .format = DRM_FORMAT_RGBX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
192 : : { .format = DRM_FORMAT_BGRX1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1 },
193 : : { .format = DRM_FORMAT_ARGB2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
194 : : { .format = DRM_FORMAT_ABGR2101010, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
195 : : { .format = DRM_FORMAT_RGBA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
196 : : { .format = DRM_FORMAT_BGRA1010102, .depth = 30, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
197 : : { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
198 : : { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
199 : : { .format = DRM_FORMAT_RGBA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
200 : : { .format = DRM_FORMAT_BGRA8888, .depth = 32, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
201 : : { .format = DRM_FORMAT_XRGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
202 : : { .format = DRM_FORMAT_XBGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1 },
203 : : { .format = DRM_FORMAT_ARGB16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
204 : : { .format = DRM_FORMAT_ABGR16161616F, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
205 : : { .format = DRM_FORMAT_RGB888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
206 : : { .format = DRM_FORMAT_BGR888_A8, .depth = 32, .num_planes = 2, .cpp = { 3, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
207 : : { .format = DRM_FORMAT_XRGB8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
208 : : { .format = DRM_FORMAT_XBGR8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
209 : : { .format = DRM_FORMAT_RGBX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
210 : : { .format = DRM_FORMAT_BGRX8888_A8, .depth = 32, .num_planes = 2, .cpp = { 4, 1, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true },
211 : : { .format = DRM_FORMAT_YUV410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
212 : : { .format = DRM_FORMAT_YVU410, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 4, .is_yuv = true },
213 : : { .format = DRM_FORMAT_YUV411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
214 : : { .format = DRM_FORMAT_YVU411, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 4, .vsub = 1, .is_yuv = true },
215 : : { .format = DRM_FORMAT_YUV420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
216 : : { .format = DRM_FORMAT_YVU420, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 2, .is_yuv = true },
217 : : { .format = DRM_FORMAT_YUV422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
218 : : { .format = DRM_FORMAT_YVU422, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 2, .vsub = 1, .is_yuv = true },
219 : : { .format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
220 : : { .format = DRM_FORMAT_YVU444, .depth = 0, .num_planes = 3, .cpp = { 1, 1, 1 }, .hsub = 1, .vsub = 1, .is_yuv = true },
221 : : { .format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
222 : : { .format = DRM_FORMAT_NV21, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true },
223 : : { .format = DRM_FORMAT_NV16, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
224 : : { .format = DRM_FORMAT_NV61, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
225 : : { .format = DRM_FORMAT_NV24, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
226 : : { .format = DRM_FORMAT_NV42, .depth = 0, .num_planes = 2, .cpp = { 1, 2, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
227 : : { .format = DRM_FORMAT_YUYV, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
228 : : { .format = DRM_FORMAT_YVYU, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
229 : : { .format = DRM_FORMAT_UYVY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
230 : : { .format = DRM_FORMAT_VYUY, .depth = 0, .num_planes = 1, .cpp = { 2, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
231 : : { .format = DRM_FORMAT_XYUV8888, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
232 : : { .format = DRM_FORMAT_VUY888, .depth = 0, .num_planes = 1, .cpp = { 3, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
233 : : { .format = DRM_FORMAT_AYUV, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
234 : : { .format = DRM_FORMAT_Y210, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
235 : : { .format = DRM_FORMAT_Y212, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
236 : : { .format = DRM_FORMAT_Y216, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 2, .vsub = 1, .is_yuv = true },
237 : : { .format = DRM_FORMAT_Y410, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
238 : : { .format = DRM_FORMAT_Y412, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
239 : : { .format = DRM_FORMAT_Y416, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .has_alpha = true, .is_yuv = true },
240 : : { .format = DRM_FORMAT_XVYU2101010, .depth = 0, .num_planes = 1, .cpp = { 4, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
241 : : { .format = DRM_FORMAT_XVYU12_16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
242 : : { .format = DRM_FORMAT_XVYU16161616, .depth = 0, .num_planes = 1, .cpp = { 8, 0, 0 }, .hsub = 1, .vsub = 1, .is_yuv = true },
243 : : { .format = DRM_FORMAT_Y0L0, .depth = 0, .num_planes = 1,
244 : : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
245 : : .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
246 : : { .format = DRM_FORMAT_X0L0, .depth = 0, .num_planes = 1,
247 : : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
248 : : .hsub = 2, .vsub = 2, .is_yuv = true },
249 : : { .format = DRM_FORMAT_Y0L2, .depth = 0, .num_planes = 1,
250 : : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
251 : : .hsub = 2, .vsub = 2, .has_alpha = true, .is_yuv = true },
252 : : { .format = DRM_FORMAT_X0L2, .depth = 0, .num_planes = 1,
253 : : .char_per_block = { 8, 0, 0 }, .block_w = { 2, 0, 0 }, .block_h = { 2, 0, 0 },
254 : : .hsub = 2, .vsub = 2, .is_yuv = true },
255 : : { .format = DRM_FORMAT_P010, .depth = 0, .num_planes = 2,
256 : : .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
257 : : .hsub = 2, .vsub = 2, .is_yuv = true},
258 : : { .format = DRM_FORMAT_P012, .depth = 0, .num_planes = 2,
259 : : .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
260 : : .hsub = 2, .vsub = 2, .is_yuv = true},
261 : : { .format = DRM_FORMAT_P016, .depth = 0, .num_planes = 2,
262 : : .char_per_block = { 2, 4, 0 }, .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 },
263 : : .hsub = 2, .vsub = 2, .is_yuv = true},
264 : : { .format = DRM_FORMAT_P210, .depth = 0,
265 : : .num_planes = 2, .char_per_block = { 2, 4, 0 },
266 : : .block_w = { 1, 1, 0 }, .block_h = { 1, 1, 0 }, .hsub = 2,
267 : : .vsub = 1, .is_yuv = true },
268 : : { .format = DRM_FORMAT_VUY101010, .depth = 0,
269 : : .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 1, .vsub = 1,
270 : : .is_yuv = true },
271 : : { .format = DRM_FORMAT_YUV420_8BIT, .depth = 0,
272 : : .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
273 : : .is_yuv = true },
274 : : { .format = DRM_FORMAT_YUV420_10BIT, .depth = 0,
275 : : .num_planes = 1, .cpp = { 0, 0, 0 }, .hsub = 2, .vsub = 2,
276 : : .is_yuv = true },
277 : : };
278 : :
279 : 0 : unsigned int i;
280 : :
281 [ # # # # : 0 : for (i = 0; i < ARRAY_SIZE(formats); ++i) {
# # ]
282 [ # # # # : 0 : if (formats[i].format == format)
# # ]
283 : 0 : return &formats[i];
284 : : }
285 : :
286 : : return NULL;
287 : : }
288 : :
289 : : /**
290 : : * drm_format_info - query information for a given format
291 : : * @format: pixel format (DRM_FORMAT_*)
292 : : *
293 : : * The caller should only pass a supported pixel format to this function.
294 : : * Unsupported pixel formats will generate a warning in the kernel log.
295 : : *
296 : : * Returns:
297 : : * The instance of struct drm_format_info that describes the pixel format, or
298 : : * NULL if the format is unsupported.
299 : : */
300 : 0 : const struct drm_format_info *drm_format_info(u32 format)
301 : : {
302 : 0 : const struct drm_format_info *info;
303 : :
304 : 0 : info = __drm_format_info(format);
305 [ # # # # ]: 0 : WARN_ON(!info);
306 : 0 : return info;
307 : : }
308 : : EXPORT_SYMBOL(drm_format_info);
309 : :
310 : : /**
311 : : * drm_get_format_info - query information for a given framebuffer configuration
312 : : * @dev: DRM device
313 : : * @mode_cmd: metadata from the userspace fb creation request
314 : : *
315 : : * Returns:
316 : : * The instance of struct drm_format_info that describes the pixel format, or
317 : : * NULL if the format is unsupported.
318 : : */
319 : : const struct drm_format_info *
320 : 0 : drm_get_format_info(struct drm_device *dev,
321 : : const struct drm_mode_fb_cmd2 *mode_cmd)
322 : : {
323 : 0 : const struct drm_format_info *info = NULL;
324 : :
325 [ # # ]: 0 : if (dev->mode_config.funcs->get_format_info)
326 : 0 : info = dev->mode_config.funcs->get_format_info(mode_cmd);
327 : :
328 [ # # ]: 0 : if (!info)
329 : 0 : info = drm_format_info(mode_cmd->pixel_format);
330 : :
331 : 0 : return info;
332 : : }
333 : : EXPORT_SYMBOL(drm_get_format_info);
334 : :
335 : : /**
336 : : * drm_format_info_block_width - width in pixels of block.
337 : : * @info: pixel format info
338 : : * @plane: plane index
339 : : *
340 : : * Returns:
341 : : * The width in pixels of a block, depending on the plane index.
342 : : */
343 : 0 : unsigned int drm_format_info_block_width(const struct drm_format_info *info,
344 : : int plane)
345 : : {
346 [ # # # # ]: 0 : if (!info || plane < 0 || plane >= info->num_planes)
347 : : return 0;
348 : :
349 [ # # ]: 0 : if (!info->block_w[plane])
350 : : return 1;
351 : 0 : return info->block_w[plane];
352 : : }
353 : : EXPORT_SYMBOL(drm_format_info_block_width);
354 : :
355 : : /**
356 : : * drm_format_info_block_height - height in pixels of a block
357 : : * @info: pixel format info
358 : : * @plane: plane index
359 : : *
360 : : * Returns:
361 : : * The height in pixels of a block, depending on the plane index.
362 : : */
363 : 0 : unsigned int drm_format_info_block_height(const struct drm_format_info *info,
364 : : int plane)
365 : : {
366 [ # # # # ]: 0 : if (!info || plane < 0 || plane >= info->num_planes)
367 : : return 0;
368 : :
369 [ # # ]: 0 : if (!info->block_h[plane])
370 : : return 1;
371 : 0 : return info->block_h[plane];
372 : : }
373 : : EXPORT_SYMBOL(drm_format_info_block_height);
374 : :
375 : : /**
376 : : * drm_format_info_min_pitch - computes the minimum required pitch in bytes
377 : : * @info: pixel format info
378 : : * @plane: plane index
379 : : * @buffer_width: buffer width in pixels
380 : : *
381 : : * Returns:
382 : : * The minimum required pitch in bytes for a buffer by taking into consideration
383 : : * the pixel format information and the buffer width.
384 : : */
385 : 0 : uint64_t drm_format_info_min_pitch(const struct drm_format_info *info,
386 : : int plane, unsigned int buffer_width)
387 : : {
388 [ # # # # ]: 0 : if (!info || plane < 0 || plane >= info->num_planes)
389 : : return 0;
390 : :
391 : 0 : return DIV_ROUND_UP_ULL((u64)buffer_width * info->char_per_block[plane],
392 : : drm_format_info_block_width(info, plane) *
393 : : drm_format_info_block_height(info, plane));
394 : : }
395 : : EXPORT_SYMBOL(drm_format_info_min_pitch);
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