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/*
* soc-camera media bus helper routines
*
* Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mediabus.h>
#include <media/soc_mediabus.h>
#define MBUS_IDX(f) (V4L2_MBUS_FMT_ ## f - V4L2_MBUS_FMT_FIXED - 1)
static const struct soc_mbus_pixelfmt mbus_fmt[] = {
[MBUS_IDX(YUYV8_2X8)] = {
.fourcc = V4L2_PIX_FMT_YUYV,
.name = "YUYV",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(YVYU8_2X8)] = {
.fourcc = V4L2_PIX_FMT_YVYU,
.name = "YVYU",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(UYVY8_2X8)] = {
.fourcc = V4L2_PIX_FMT_UYVY,
.name = "UYVY",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(VYUY8_2X8)] = {
.fourcc = V4L2_PIX_FMT_VYUY,
.name = "VYUY",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(RGB555_2X8_PADHI_LE)] = {
.fourcc = V4L2_PIX_FMT_RGB555,
.name = "RGB555",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(RGB555_2X8_PADHI_BE)] = {
.fourcc = V4L2_PIX_FMT_RGB555X,
.name = "RGB555X",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(RGB565_2X8_LE)] = {
.fourcc = V4L2_PIX_FMT_RGB565,
.name = "RGB565",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(RGB565_2X8_BE)] = {
.fourcc = V4L2_PIX_FMT_RGB565X,
.name = "RGB565X",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(SBGGR8_1X8)] = {
.fourcc = V4L2_PIX_FMT_SBGGR8,
.name = "Bayer 8 BGGR",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_NONE,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(SBGGR10_1X10)] = {
.fourcc = V4L2_PIX_FMT_SBGGR10,
.name = "Bayer 10 BGGR",
.bits_per_sample = 10,
.packing = SOC_MBUS_PACKING_EXTEND16,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(Y8_1X8)] = {
.fourcc = V4L2_PIX_FMT_GREY,
.name = "Grey",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_NONE,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(Y10_1X10)] = {
.fourcc = V4L2_PIX_FMT_Y10,
.name = "Grey 10bit",
.bits_per_sample = 10,
.packing = SOC_MBUS_PACKING_EXTEND16,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(SBGGR10_2X8_PADHI_LE)] = {
.fourcc = V4L2_PIX_FMT_SBGGR10,
.name = "Bayer 10 BGGR",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(SBGGR10_2X8_PADLO_LE)] = {
.fourcc = V4L2_PIX_FMT_SBGGR10,
.name = "Bayer 10 BGGR",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADLO,
.order = SOC_MBUS_ORDER_LE,
},
[MBUS_IDX(SBGGR10_2X8_PADHI_BE)] = {
.fourcc = V4L2_PIX_FMT_SBGGR10,
.name = "Bayer 10 BGGR",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADHI,
.order = SOC_MBUS_ORDER_BE,
},
[MBUS_IDX(SBGGR10_2X8_PADLO_BE)] = {
.fourcc = V4L2_PIX_FMT_SBGGR10,
.name = "Bayer 10 BGGR",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_2X8_PADLO,
.order = SOC_MBUS_ORDER_BE,
},
[MBUS_IDX(JPEG_1X8)] = {
.fourcc = V4L2_PIX_FMT_JPEG,
.name = "JPEG",
.bits_per_sample = 8,
.packing = SOC_MBUS_PACKING_VARIABLE,
.order = SOC_MBUS_ORDER_LE,
},
};
int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf)
{
switch (mf->packing) {
case SOC_MBUS_PACKING_NONE:
case SOC_MBUS_PACKING_EXTEND16:
return 1;
case SOC_MBUS_PACKING_2X8_PADHI:
case SOC_MBUS_PACKING_2X8_PADLO:
return 2;
case SOC_MBUS_PACKING_VARIABLE:
return 0;
}
return -EINVAL;
}
EXPORT_SYMBOL(soc_mbus_samples_per_pixel);
s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf)
{
switch (mf->packing) {
case SOC_MBUS_PACKING_NONE:
return width * mf->bits_per_sample / 8;
case SOC_MBUS_PACKING_2X8_PADHI:
case SOC_MBUS_PACKING_2X8_PADLO:
case SOC_MBUS_PACKING_EXTEND16:
return width * 2;
case SOC_MBUS_PACKING_VARIABLE:
return 0;
}
return -EINVAL;
}
EXPORT_SYMBOL(soc_mbus_bytes_per_line);
const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
enum v4l2_mbus_pixelcode code)
{
if (code - V4L2_MBUS_FMT_FIXED > ARRAY_SIZE(mbus_fmt) ||
code <= V4L2_MBUS_FMT_FIXED)
return NULL;
return mbus_fmt + code - V4L2_MBUS_FMT_FIXED - 1;
}
EXPORT_SYMBOL(soc_mbus_get_fmtdesc);
static int __init soc_mbus_init(void)
{
return 0;
}
static void __exit soc_mbus_exit(void)
{
}
module_init(soc_mbus_init);
module_exit(soc_mbus_exit);
MODULE_DESCRIPTION("soc-camera media bus interface");
MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
MODULE_LICENSE("GPL v2");
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