2 * soc-camera media bus helper routines
4 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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.
11 #include <linux/kernel.h>
12 #include <linux/module.h>
14 #include <media/v4l2-device.h>
15 #include <media/v4l2-mediabus.h>
16 #include <media/soc_mediabus.h>
18 static const struct soc_mbus_lookup mbus_fmt[] = {
20 .code = V4L2_MBUS_FMT_YUYV8_2X8,
22 .fourcc = V4L2_PIX_FMT_YUYV,
25 .packing = SOC_MBUS_PACKING_2X8_PADHI,
26 .order = SOC_MBUS_ORDER_LE,
29 .code = V4L2_MBUS_FMT_YVYU8_2X8,
31 .fourcc = V4L2_PIX_FMT_YVYU,
34 .packing = SOC_MBUS_PACKING_2X8_PADHI,
35 .order = SOC_MBUS_ORDER_LE,
38 .code = V4L2_MBUS_FMT_UYVY8_2X8,
40 .fourcc = V4L2_PIX_FMT_UYVY,
43 .packing = SOC_MBUS_PACKING_2X8_PADHI,
44 .order = SOC_MBUS_ORDER_LE,
47 .code = V4L2_MBUS_FMT_VYUY8_2X8,
49 .fourcc = V4L2_PIX_FMT_VYUY,
52 .packing = SOC_MBUS_PACKING_2X8_PADHI,
53 .order = SOC_MBUS_ORDER_LE,
56 .code = V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE,
58 .fourcc = V4L2_PIX_FMT_RGB555,
61 .packing = SOC_MBUS_PACKING_2X8_PADHI,
62 .order = SOC_MBUS_ORDER_LE,
65 .code = V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE,
67 .fourcc = V4L2_PIX_FMT_RGB555X,
70 .packing = SOC_MBUS_PACKING_2X8_PADHI,
71 .order = SOC_MBUS_ORDER_LE,
74 .code = V4L2_MBUS_FMT_RGB565_2X8_LE,
76 .fourcc = V4L2_PIX_FMT_RGB565,
79 .packing = SOC_MBUS_PACKING_2X8_PADHI,
80 .order = SOC_MBUS_ORDER_LE,
83 .code = V4L2_MBUS_FMT_RGB565_2X8_BE,
85 .fourcc = V4L2_PIX_FMT_RGB565X,
88 .packing = SOC_MBUS_PACKING_2X8_PADHI,
89 .order = SOC_MBUS_ORDER_LE,
92 .code = V4L2_MBUS_FMT_SBGGR8_1X8,
94 .fourcc = V4L2_PIX_FMT_SBGGR8,
95 .name = "Bayer 8 BGGR",
97 .packing = SOC_MBUS_PACKING_NONE,
98 .order = SOC_MBUS_ORDER_LE,
101 .code = V4L2_MBUS_FMT_SBGGR10_1X10,
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,
110 .code = V4L2_MBUS_FMT_Y8_1X8,
112 .fourcc = V4L2_PIX_FMT_GREY,
114 .bits_per_sample = 8,
115 .packing = SOC_MBUS_PACKING_NONE,
116 .order = SOC_MBUS_ORDER_LE,
119 .code = V4L2_MBUS_FMT_Y10_1X10,
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,
128 .code = V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE,
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,
137 .code = V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE,
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,
146 .code = V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE,
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,
155 .code = V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE,
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,
164 .code = V4L2_MBUS_FMT_JPEG_1X8,
166 .fourcc = V4L2_PIX_FMT_JPEG,
168 .bits_per_sample = 8,
169 .packing = SOC_MBUS_PACKING_VARIABLE,
170 .order = SOC_MBUS_ORDER_LE,
173 .code = V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE,
175 .fourcc = V4L2_PIX_FMT_RGB444,
177 .bits_per_sample = 8,
178 .packing = SOC_MBUS_PACKING_2X8_PADHI,
179 .order = SOC_MBUS_ORDER_BE,
182 .code = V4L2_MBUS_FMT_YUYV8_1_5X8,
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,
191 .code = V4L2_MBUS_FMT_YVYU8_1_5X8,
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,
200 .code = V4L2_MBUS_FMT_UYVY8_1X16,
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,
209 .code = V4L2_MBUS_FMT_VYUY8_1X16,
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,
218 .code = V4L2_MBUS_FMT_YUYV8_1X16,
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,
227 .code = V4L2_MBUS_FMT_YVYU8_1X16,
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,
236 .code = V4L2_MBUS_FMT_SGRBG8_1X8,
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,
245 .code = V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8,
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,
254 .code = V4L2_MBUS_FMT_SGBRG10_1X10,
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,
263 .code = V4L2_MBUS_FMT_SGRBG10_1X10,
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,
272 .code = V4L2_MBUS_FMT_SRGGB10_1X10,
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,
281 .code = V4L2_MBUS_FMT_SBGGR12_1X12,
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,
290 .code = V4L2_MBUS_FMT_SGBRG12_1X12,
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,
299 .code = V4L2_MBUS_FMT_SGRBG12_1X12,
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,
308 .code = V4L2_MBUS_FMT_SRGGB12_1X12,
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,
319 int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf,
320 unsigned int *numerator, unsigned int *denominator)
322 switch (mf->packing) {
323 case SOC_MBUS_PACKING_NONE:
324 case SOC_MBUS_PACKING_EXTEND16:
328 case SOC_MBUS_PACKING_2X8_PADHI:
329 case SOC_MBUS_PACKING_2X8_PADLO:
333 case SOC_MBUS_PACKING_1_5X8:
337 case SOC_MBUS_PACKING_VARIABLE:
344 EXPORT_SYMBOL(soc_mbus_samples_per_pixel);
346 s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf)
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:
355 case SOC_MBUS_PACKING_1_5X8:
356 return width * 3 / 2;
357 case SOC_MBUS_PACKING_VARIABLE:
362 EXPORT_SYMBOL(soc_mbus_bytes_per_line);
364 const struct soc_mbus_pixelfmt *soc_mbus_find_fmtdesc(
365 enum v4l2_mbus_pixelcode code,
366 const struct soc_mbus_lookup *lookup,
371 for (i = 0; i < n; i++)
372 if (lookup[i].code == code)
373 return &lookup[i].fmt;
377 EXPORT_SYMBOL(soc_mbus_find_fmtdesc);
379 const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
380 enum v4l2_mbus_pixelcode code)
382 return soc_mbus_find_fmtdesc(code, mbus_fmt, ARRAY_SIZE(mbus_fmt));
384 EXPORT_SYMBOL(soc_mbus_get_fmtdesc);
386 unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
389 unsigned long common_flags;
390 bool hsync = true, vsync = true, pclk, data, mode;
391 bool mipi_lanes, mipi_clock;
393 common_flags = cfg->flags & flags;
396 case V4L2_MBUS_PARALLEL:
397 hsync = common_flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH |
398 V4L2_MBUS_HSYNC_ACTIVE_LOW);
399 vsync = common_flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH |
400 V4L2_MBUS_VSYNC_ACTIVE_LOW);
401 case V4L2_MBUS_BT656:
402 pclk = common_flags & (V4L2_MBUS_PCLK_SAMPLE_RISING |
403 V4L2_MBUS_PCLK_SAMPLE_FALLING);
404 data = common_flags & (V4L2_MBUS_DATA_ACTIVE_HIGH |
405 V4L2_MBUS_DATA_ACTIVE_LOW);
406 mode = common_flags & (V4L2_MBUS_MASTER | V4L2_MBUS_SLAVE);
407 return (!hsync || !vsync || !pclk || !data || !mode) ?
410 mipi_lanes = common_flags & V4L2_MBUS_CSI2_LANES;
411 mipi_clock = common_flags & (V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK |
412 V4L2_MBUS_CSI2_CONTINUOUS_CLOCK);
413 return (!mipi_lanes || !mipi_clock) ? 0 : common_flags;
417 EXPORT_SYMBOL(soc_mbus_config_compatible);
419 static int __init soc_mbus_init(void)
424 static void __exit soc_mbus_exit(void)
428 module_init(soc_mbus_init);
429 module_exit(soc_mbus_exit);
431 MODULE_DESCRIPTION("soc-camera media bus interface");
432 MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
433 MODULE_LICENSE("GPL v2");