diff options
author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
---|---|---|
committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/media/video/soc_mediabus.c | |
parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) |
Diffstat (limited to 'drivers/media/video/soc_mediabus.c')
-rw-r--r-- | drivers/media/video/soc_mediabus.c | 400 |
1 files changed, 400 insertions, 0 deletions
diff --git a/drivers/media/video/soc_mediabus.c b/drivers/media/video/soc_mediabus.c new file mode 100644 index 00000000000..bea7c9cf4f8 --- /dev/null +++ b/drivers/media/video/soc_mediabus.c | |||
@@ -0,0 +1,400 @@ | |||
1 | /* | ||
2 | * soc-camera media bus helper routines | ||
3 | * | ||
4 | * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de> | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | */ | ||
10 | |||
11 | #include <linux/kernel.h> | ||
12 | #include <linux/module.h> | ||
13 | |||
14 | #include <media/v4l2-device.h> | ||
15 | #include <media/v4l2-mediabus.h> | ||
16 | #include <media/soc_mediabus.h> | ||
17 | |||
18 | static const struct soc_mbus_lookup mbus_fmt[] = { | ||
19 | { | ||
20 | .code = V4L2_MBUS_FMT_YUYV8_2X8, | ||
21 | .fmt = { | ||
22 | .fourcc = V4L2_PIX_FMT_YUYV, | ||
23 | .name = "YUYV", | ||
24 | .bits_per_sample = 8, | ||
25 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
26 | .order = SOC_MBUS_ORDER_LE, | ||
27 | }, | ||
28 | }, { | ||
29 | .code = V4L2_MBUS_FMT_YVYU8_2X8, | ||
30 | .fmt = { | ||
31 | .fourcc = V4L2_PIX_FMT_YVYU, | ||
32 | .name = "YVYU", | ||
33 | .bits_per_sample = 8, | ||
34 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
35 | .order = SOC_MBUS_ORDER_LE, | ||
36 | }, | ||
37 | }, { | ||
38 | .code = V4L2_MBUS_FMT_UYVY8_2X8, | ||
39 | .fmt = { | ||
40 | .fourcc = V4L2_PIX_FMT_UYVY, | ||
41 | .name = "UYVY", | ||
42 | .bits_per_sample = 8, | ||
43 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
44 | .order = SOC_MBUS_ORDER_LE, | ||
45 | }, | ||
46 | }, { | ||
47 | .code = V4L2_MBUS_FMT_VYUY8_2X8, | ||
48 | .fmt = { | ||
49 | .fourcc = V4L2_PIX_FMT_VYUY, | ||
50 | .name = "VYUY", | ||
51 | .bits_per_sample = 8, | ||
52 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
53 | .order = SOC_MBUS_ORDER_LE, | ||
54 | }, | ||
55 | }, { | ||
56 | .code = V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, | ||
57 | .fmt = { | ||
58 | .fourcc = V4L2_PIX_FMT_RGB555, | ||
59 | .name = "RGB555", | ||
60 | .bits_per_sample = 8, | ||
61 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
62 | .order = SOC_MBUS_ORDER_LE, | ||
63 | }, | ||
64 | }, { | ||
65 | .code = V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, | ||
66 | .fmt = { | ||
67 | .fourcc = V4L2_PIX_FMT_RGB555X, | ||
68 | .name = "RGB555X", | ||
69 | .bits_per_sample = 8, | ||
70 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
71 | .order = SOC_MBUS_ORDER_LE, | ||
72 | }, | ||
73 | }, { | ||
74 | .code = V4L2_MBUS_FMT_RGB565_2X8_LE, | ||
75 | .fmt = { | ||
76 | .fourcc = V4L2_PIX_FMT_RGB565, | ||
77 | .name = "RGB565", | ||
78 | .bits_per_sample = 8, | ||
79 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
80 | .order = SOC_MBUS_ORDER_LE, | ||
81 | }, | ||
82 | }, { | ||
83 | .code = V4L2_MBUS_FMT_RGB565_2X8_BE, | ||
84 | .fmt = { | ||
85 | .fourcc = V4L2_PIX_FMT_RGB565X, | ||
86 | .name = "RGB565X", | ||
87 | .bits_per_sample = 8, | ||
88 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
89 | .order = SOC_MBUS_ORDER_LE, | ||
90 | }, | ||
91 | }, { | ||
92 | .code = V4L2_MBUS_FMT_SBGGR8_1X8, | ||
93 | .fmt = { | ||
94 | .fourcc = V4L2_PIX_FMT_SBGGR8, | ||
95 | .name = "Bayer 8 BGGR", | ||
96 | .bits_per_sample = 8, | ||
97 | .packing = SOC_MBUS_PACKING_NONE, | ||
98 | .order = SOC_MBUS_ORDER_LE, | ||
99 | }, | ||
100 | }, { | ||
101 | .code = V4L2_MBUS_FMT_SBGGR10_1X10, | ||
102 | .fmt = { | ||
103 | .fourcc = V4L2_PIX_FMT_SBGGR10, | ||
104 | .name = "Bayer 10 BGGR", | ||
105 | .bits_per_sample = 10, | ||
106 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
107 | .order = SOC_MBUS_ORDER_LE, | ||
108 | }, | ||
109 | }, { | ||
110 | .code = V4L2_MBUS_FMT_Y8_1X8, | ||
111 | .fmt = { | ||
112 | .fourcc = V4L2_PIX_FMT_GREY, | ||
113 | .name = "Grey", | ||
114 | .bits_per_sample = 8, | ||
115 | .packing = SOC_MBUS_PACKING_NONE, | ||
116 | .order = SOC_MBUS_ORDER_LE, | ||
117 | }, | ||
118 | }, { | ||
119 | .code = V4L2_MBUS_FMT_Y10_1X10, | ||
120 | .fmt = { | ||
121 | .fourcc = V4L2_PIX_FMT_Y10, | ||
122 | .name = "Grey 10bit", | ||
123 | .bits_per_sample = 10, | ||
124 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
125 | .order = SOC_MBUS_ORDER_LE, | ||
126 | }, | ||
127 | }, { | ||
128 | .code = V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, | ||
129 | .fmt = { | ||
130 | .fourcc = V4L2_PIX_FMT_SBGGR10, | ||
131 | .name = "Bayer 10 BGGR", | ||
132 | .bits_per_sample = 8, | ||
133 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
134 | .order = SOC_MBUS_ORDER_LE, | ||
135 | }, | ||
136 | }, { | ||
137 | .code = V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE, | ||
138 | .fmt = { | ||
139 | .fourcc = V4L2_PIX_FMT_SBGGR10, | ||
140 | .name = "Bayer 10 BGGR", | ||
141 | .bits_per_sample = 8, | ||
142 | .packing = SOC_MBUS_PACKING_2X8_PADLO, | ||
143 | .order = SOC_MBUS_ORDER_LE, | ||
144 | }, | ||
145 | }, { | ||
146 | .code = V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE, | ||
147 | .fmt = { | ||
148 | .fourcc = V4L2_PIX_FMT_SBGGR10, | ||
149 | .name = "Bayer 10 BGGR", | ||
150 | .bits_per_sample = 8, | ||
151 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
152 | .order = SOC_MBUS_ORDER_BE, | ||
153 | }, | ||
154 | }, { | ||
155 | .code = V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE, | ||
156 | .fmt = { | ||
157 | .fourcc = V4L2_PIX_FMT_SBGGR10, | ||
158 | .name = "Bayer 10 BGGR", | ||
159 | .bits_per_sample = 8, | ||
160 | .packing = SOC_MBUS_PACKING_2X8_PADLO, | ||
161 | .order = SOC_MBUS_ORDER_BE, | ||
162 | }, | ||
163 | }, { | ||
164 | .code = V4L2_MBUS_FMT_JPEG_1X8, | ||
165 | .fmt = { | ||
166 | .fourcc = V4L2_PIX_FMT_JPEG, | ||
167 | .name = "JPEG", | ||
168 | .bits_per_sample = 8, | ||
169 | .packing = SOC_MBUS_PACKING_VARIABLE, | ||
170 | .order = SOC_MBUS_ORDER_LE, | ||
171 | }, | ||
172 | }, { | ||
173 | .code = V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE, | ||
174 | .fmt = { | ||
175 | .fourcc = V4L2_PIX_FMT_RGB444, | ||
176 | .name = "RGB444", | ||
177 | .bits_per_sample = 8, | ||
178 | .packing = SOC_MBUS_PACKING_2X8_PADHI, | ||
179 | .order = SOC_MBUS_ORDER_BE, | ||
180 | }, | ||
181 | }, { | ||
182 | .code = V4L2_MBUS_FMT_YUYV8_1_5X8, | ||
183 | .fmt = { | ||
184 | .fourcc = V4L2_PIX_FMT_YUV420, | ||
185 | .name = "YUYV 4:2:0", | ||
186 | .bits_per_sample = 8, | ||
187 | .packing = SOC_MBUS_PACKING_1_5X8, | ||
188 | .order = SOC_MBUS_ORDER_LE, | ||
189 | }, | ||
190 | }, { | ||
191 | .code = V4L2_MBUS_FMT_YVYU8_1_5X8, | ||
192 | .fmt = { | ||
193 | .fourcc = V4L2_PIX_FMT_YVU420, | ||
194 | .name = "YVYU 4:2:0", | ||
195 | .bits_per_sample = 8, | ||
196 | .packing = SOC_MBUS_PACKING_1_5X8, | ||
197 | .order = SOC_MBUS_ORDER_LE, | ||
198 | }, | ||
199 | }, { | ||
200 | .code = V4L2_MBUS_FMT_UYVY8_1X16, | ||
201 | .fmt = { | ||
202 | .fourcc = V4L2_PIX_FMT_UYVY, | ||
203 | .name = "UYVY 16bit", | ||
204 | .bits_per_sample = 16, | ||
205 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
206 | .order = SOC_MBUS_ORDER_LE, | ||
207 | }, | ||
208 | }, { | ||
209 | .code = V4L2_MBUS_FMT_VYUY8_1X16, | ||
210 | .fmt = { | ||
211 | .fourcc = V4L2_PIX_FMT_VYUY, | ||
212 | .name = "VYUY 16bit", | ||
213 | .bits_per_sample = 16, | ||
214 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
215 | .order = SOC_MBUS_ORDER_LE, | ||
216 | }, | ||
217 | }, { | ||
218 | .code = V4L2_MBUS_FMT_YUYV8_1X16, | ||
219 | .fmt = { | ||
220 | .fourcc = V4L2_PIX_FMT_YUYV, | ||
221 | .name = "YUYV 16bit", | ||
222 | .bits_per_sample = 16, | ||
223 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
224 | .order = SOC_MBUS_ORDER_LE, | ||
225 | }, | ||
226 | }, { | ||
227 | .code = V4L2_MBUS_FMT_YVYU8_1X16, | ||
228 | .fmt = { | ||
229 | .fourcc = V4L2_PIX_FMT_YVYU, | ||
230 | .name = "YVYU 16bit", | ||
231 | .bits_per_sample = 16, | ||
232 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
233 | .order = SOC_MBUS_ORDER_LE, | ||
234 | }, | ||
235 | }, { | ||
236 | .code = V4L2_MBUS_FMT_SGRBG8_1X8, | ||
237 | .fmt = { | ||
238 | .fourcc = V4L2_PIX_FMT_SGRBG8, | ||
239 | .name = "Bayer 8 GRBG", | ||
240 | .bits_per_sample = 8, | ||
241 | .packing = SOC_MBUS_PACKING_NONE, | ||
242 | .order = SOC_MBUS_ORDER_LE, | ||
243 | }, | ||
244 | }, { | ||
245 | .code = V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8, | ||
246 | .fmt = { | ||
247 | .fourcc = V4L2_PIX_FMT_SGRBG10DPCM8, | ||
248 | .name = "Bayer 10 BGGR DPCM 8", | ||
249 | .bits_per_sample = 8, | ||
250 | .packing = SOC_MBUS_PACKING_NONE, | ||
251 | .order = SOC_MBUS_ORDER_LE, | ||
252 | }, | ||
253 | }, { | ||
254 | .code = V4L2_MBUS_FMT_SGBRG10_1X10, | ||
255 | .fmt = { | ||
256 | .fourcc = V4L2_PIX_FMT_SGBRG10, | ||
257 | .name = "Bayer 10 GBRG", | ||
258 | .bits_per_sample = 10, | ||
259 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
260 | .order = SOC_MBUS_ORDER_LE, | ||
261 | }, | ||
262 | }, { | ||
263 | .code = V4L2_MBUS_FMT_SGRBG10_1X10, | ||
264 | .fmt = { | ||
265 | .fourcc = V4L2_PIX_FMT_SGRBG10, | ||
266 | .name = "Bayer 10 GRBG", | ||
267 | .bits_per_sample = 10, | ||
268 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
269 | .order = SOC_MBUS_ORDER_LE, | ||
270 | }, | ||
271 | }, { | ||
272 | .code = V4L2_MBUS_FMT_SRGGB10_1X10, | ||
273 | .fmt = { | ||
274 | .fourcc = V4L2_PIX_FMT_SRGGB10, | ||
275 | .name = "Bayer 10 RGGB", | ||
276 | .bits_per_sample = 10, | ||
277 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
278 | .order = SOC_MBUS_ORDER_LE, | ||
279 | }, | ||
280 | }, { | ||
281 | .code = V4L2_MBUS_FMT_SBGGR12_1X12, | ||
282 | .fmt = { | ||
283 | .fourcc = V4L2_PIX_FMT_SBGGR12, | ||
284 | .name = "Bayer 12 BGGR", | ||
285 | .bits_per_sample = 12, | ||
286 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
287 | .order = SOC_MBUS_ORDER_LE, | ||
288 | }, | ||
289 | }, { | ||
290 | .code = V4L2_MBUS_FMT_SGBRG12_1X12, | ||
291 | .fmt = { | ||
292 | .fourcc = V4L2_PIX_FMT_SGBRG12, | ||
293 | .name = "Bayer 12 GBRG", | ||
294 | .bits_per_sample = 12, | ||
295 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
296 | .order = SOC_MBUS_ORDER_LE, | ||
297 | }, | ||
298 | }, { | ||
299 | .code = V4L2_MBUS_FMT_SGRBG12_1X12, | ||
300 | .fmt = { | ||
301 | .fourcc = V4L2_PIX_FMT_SGRBG12, | ||
302 | .name = "Bayer 12 GRBG", | ||
303 | .bits_per_sample = 12, | ||
304 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
305 | .order = SOC_MBUS_ORDER_LE, | ||
306 | }, | ||
307 | }, { | ||
308 | .code = V4L2_MBUS_FMT_SRGGB12_1X12, | ||
309 | .fmt = { | ||
310 | .fourcc = V4L2_PIX_FMT_SRGGB12, | ||
311 | .name = "Bayer 12 RGGB", | ||
312 | .bits_per_sample = 12, | ||
313 | .packing = SOC_MBUS_PACKING_EXTEND16, | ||
314 | .order = SOC_MBUS_ORDER_LE, | ||
315 | }, | ||
316 | }, | ||
317 | }; | ||
318 | |||
319 | int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf, | ||
320 | unsigned int *numerator, unsigned int *denominator) | ||
321 | { | ||
322 | switch (mf->packing) { | ||
323 | case SOC_MBUS_PACKING_NONE: | ||
324 | case SOC_MBUS_PACKING_EXTEND16: | ||
325 | *numerator = 1; | ||
326 | *denominator = 1; | ||
327 | return 0; | ||
328 | case SOC_MBUS_PACKING_2X8_PADHI: | ||
329 | case SOC_MBUS_PACKING_2X8_PADLO: | ||
330 | *numerator = 2; | ||
331 | *denominator = 1; | ||
332 | return 0; | ||
333 | case SOC_MBUS_PACKING_1_5X8: | ||
334 | *numerator = 3; | ||
335 | *denominator = 2; | ||
336 | return 0; | ||
337 | case SOC_MBUS_PACKING_VARIABLE: | ||
338 | *numerator = 0; | ||
339 | *denominator = 1; | ||
340 | return 0; | ||
341 | } | ||
342 | return -EINVAL; | ||
343 | } | ||
344 | EXPORT_SYMBOL(soc_mbus_samples_per_pixel); | ||
345 | |||
346 | s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf) | ||
347 | { | ||
348 | switch (mf->packing) { | ||
349 | case SOC_MBUS_PACKING_NONE: | ||
350 | return width * mf->bits_per_sample / 8; | ||
351 | case SOC_MBUS_PACKING_2X8_PADHI: | ||
352 | case SOC_MBUS_PACKING_2X8_PADLO: | ||
353 | case SOC_MBUS_PACKING_EXTEND16: | ||
354 | return width * 2; | ||
355 | case SOC_MBUS_PACKING_1_5X8: | ||
356 | return width * 3 / 2; | ||
357 | case SOC_MBUS_PACKING_VARIABLE: | ||
358 | return 0; | ||
359 | } | ||
360 | return -EINVAL; | ||
361 | } | ||
362 | EXPORT_SYMBOL(soc_mbus_bytes_per_line); | ||
363 | |||
364 | const struct soc_mbus_pixelfmt *soc_mbus_find_fmtdesc( | ||
365 | enum v4l2_mbus_pixelcode code, | ||
366 | const struct soc_mbus_lookup *lookup, | ||
367 | int n) | ||
368 | { | ||
369 | int i; | ||
370 | |||
371 | for (i = 0; i < n; i++) | ||
372 | if (lookup[i].code == code) | ||
373 | return &lookup[i].fmt; | ||
374 | |||
375 | return NULL; | ||
376 | } | ||
377 | EXPORT_SYMBOL(soc_mbus_find_fmtdesc); | ||
378 | |||
379 | const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc( | ||
380 | enum v4l2_mbus_pixelcode code) | ||
381 | { | ||
382 | return soc_mbus_find_fmtdesc(code, mbus_fmt, ARRAY_SIZE(mbus_fmt)); | ||
383 | } | ||
384 | EXPORT_SYMBOL(soc_mbus_get_fmtdesc); | ||
385 | |||
386 | static int __init soc_mbus_init(void) | ||
387 | { | ||
388 | return 0; | ||
389 | } | ||
390 | |||
391 | static void __exit soc_mbus_exit(void) | ||
392 | { | ||
393 | } | ||
394 | |||
395 | module_init(soc_mbus_init); | ||
396 | module_exit(soc_mbus_exit); | ||
397 | |||
398 | MODULE_DESCRIPTION("soc-camera media bus interface"); | ||
399 | MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); | ||
400 | MODULE_LICENSE("GPL v2"); | ||