434 lines
10 KiB
C
434 lines
10 KiB
C
/*
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* soc-camera media bus helper routines
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*
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* Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-mediabus.h>
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#include <media/soc_mediabus.h>
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static const struct soc_mbus_lookup mbus_fmt[] = {
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{
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.code = V4L2_MBUS_FMT_YUYV8_2X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_YUYV,
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.name = "YUYV",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_YVYU8_2X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_YVYU,
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.name = "YVYU",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_UYVY8_2X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_UYVY,
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.name = "UYVY",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_VYUY8_2X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_VYUY,
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.name = "VYUY",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_RGB555,
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.name = "RGB555",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_RGB555X,
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.name = "RGB555X",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_RGB565_2X8_LE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_RGB565,
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.name = "RGB565",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_RGB565_2X8_BE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_RGB565X,
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.name = "RGB565X",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SBGGR8_1X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SBGGR8,
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.name = "Bayer 8 BGGR",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_NONE,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SBGGR10_1X10,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SBGGR10,
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.name = "Bayer 10 BGGR",
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.bits_per_sample = 10,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_Y8_1X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_GREY,
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.name = "Grey",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_NONE,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_Y10_1X10,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_Y10,
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.name = "Grey 10bit",
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.bits_per_sample = 10,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SBGGR10,
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.name = "Bayer 10 BGGR",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_LE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SBGGR10,
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.name = "Bayer 10 BGGR",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADLO,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_BE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SBGGR10,
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.name = "Bayer 10 BGGR",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_BE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SBGGR10_2X8_PADLO_BE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SBGGR10,
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.name = "Bayer 10 BGGR",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADLO,
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.order = SOC_MBUS_ORDER_BE,
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},
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}, {
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.code = V4L2_MBUS_FMT_JPEG_1X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_JPEG,
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.name = "JPEG",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_VARIABLE,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_RGB444_2X8_PADHI_BE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_RGB444,
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.name = "RGB444",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_2X8_PADHI,
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.order = SOC_MBUS_ORDER_BE,
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},
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}, {
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.code = V4L2_MBUS_FMT_YUYV8_1_5X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_YUV420,
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.name = "YUYV 4:2:0",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_1_5X8,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_YVYU8_1_5X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_YVU420,
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.name = "YVYU 4:2:0",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_1_5X8,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_UYVY8_1X16,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_UYVY,
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.name = "UYVY 16bit",
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.bits_per_sample = 16,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_VYUY8_1X16,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_VYUY,
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.name = "VYUY 16bit",
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.bits_per_sample = 16,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_YUYV8_1X16,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_YUYV,
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.name = "YUYV 16bit",
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.bits_per_sample = 16,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_YVYU8_1X16,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_YVYU,
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.name = "YVYU 16bit",
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.bits_per_sample = 16,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SGRBG8_1X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SGRBG8,
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.name = "Bayer 8 GRBG",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_NONE,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SGRBG10DPCM8,
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.name = "Bayer 10 BGGR DPCM 8",
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.bits_per_sample = 8,
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.packing = SOC_MBUS_PACKING_NONE,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SGBRG10_1X10,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SGBRG10,
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.name = "Bayer 10 GBRG",
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.bits_per_sample = 10,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SGRBG10_1X10,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SGRBG10,
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.name = "Bayer 10 GRBG",
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.bits_per_sample = 10,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SRGGB10_1X10,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SRGGB10,
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.name = "Bayer 10 RGGB",
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.bits_per_sample = 10,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SBGGR12_1X12,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SBGGR12,
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.name = "Bayer 12 BGGR",
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.bits_per_sample = 12,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SGBRG12_1X12,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SGBRG12,
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.name = "Bayer 12 GBRG",
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.bits_per_sample = 12,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SGRBG12_1X12,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SGRBG12,
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.name = "Bayer 12 GRBG",
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.bits_per_sample = 12,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = V4L2_MBUS_FMT_SRGGB12_1X12,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_SRGGB12,
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.name = "Bayer 12 RGGB",
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.bits_per_sample = 12,
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.packing = SOC_MBUS_PACKING_EXTEND16,
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.order = SOC_MBUS_ORDER_LE,
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},
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},
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};
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int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf,
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unsigned int *numerator, unsigned int *denominator)
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{
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switch (mf->packing) {
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case SOC_MBUS_PACKING_NONE:
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case SOC_MBUS_PACKING_EXTEND16:
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*numerator = 1;
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*denominator = 1;
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return 0;
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case SOC_MBUS_PACKING_2X8_PADHI:
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case SOC_MBUS_PACKING_2X8_PADLO:
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*numerator = 2;
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*denominator = 1;
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return 0;
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case SOC_MBUS_PACKING_1_5X8:
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*numerator = 3;
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*denominator = 2;
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return 0;
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case SOC_MBUS_PACKING_VARIABLE:
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*numerator = 0;
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*denominator = 1;
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return 0;
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}
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return -EINVAL;
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}
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EXPORT_SYMBOL(soc_mbus_samples_per_pixel);
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s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf)
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{
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switch (mf->packing) {
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case SOC_MBUS_PACKING_NONE:
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return width * mf->bits_per_sample / 8;
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case SOC_MBUS_PACKING_2X8_PADHI:
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case SOC_MBUS_PACKING_2X8_PADLO:
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case SOC_MBUS_PACKING_EXTEND16:
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return width * 2;
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case SOC_MBUS_PACKING_1_5X8:
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return width * 3 / 2;
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case SOC_MBUS_PACKING_VARIABLE:
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return 0;
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}
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return -EINVAL;
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}
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EXPORT_SYMBOL(soc_mbus_bytes_per_line);
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const struct soc_mbus_pixelfmt *soc_mbus_find_fmtdesc(
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enum v4l2_mbus_pixelcode code,
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const struct soc_mbus_lookup *lookup,
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int n)
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{
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int i;
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for (i = 0; i < n; i++)
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if (lookup[i].code == code)
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return &lookup[i].fmt;
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return NULL;
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}
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EXPORT_SYMBOL(soc_mbus_find_fmtdesc);
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const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
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enum v4l2_mbus_pixelcode code)
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{
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return soc_mbus_find_fmtdesc(code, mbus_fmt, ARRAY_SIZE(mbus_fmt));
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}
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EXPORT_SYMBOL(soc_mbus_get_fmtdesc);
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unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
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unsigned int flags)
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{
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unsigned long common_flags;
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bool hsync = true, vsync = true, pclk, data, mode;
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bool mipi_lanes, mipi_clock;
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common_flags = cfg->flags & flags;
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switch (cfg->type) {
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case V4L2_MBUS_PARALLEL:
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hsync = common_flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH |
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V4L2_MBUS_HSYNC_ACTIVE_LOW);
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vsync = common_flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH |
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V4L2_MBUS_VSYNC_ACTIVE_LOW);
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case V4L2_MBUS_BT656:
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pclk = common_flags & (V4L2_MBUS_PCLK_SAMPLE_RISING |
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V4L2_MBUS_PCLK_SAMPLE_FALLING);
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data = common_flags & (V4L2_MBUS_DATA_ACTIVE_HIGH |
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V4L2_MBUS_DATA_ACTIVE_LOW);
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mode = common_flags & (V4L2_MBUS_MASTER | V4L2_MBUS_SLAVE);
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return (!hsync || !vsync || !pclk || !data || !mode) ?
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0 : common_flags;
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case V4L2_MBUS_CSI2:
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mipi_lanes = common_flags & V4L2_MBUS_CSI2_LANES;
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mipi_clock = common_flags & (V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK |
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V4L2_MBUS_CSI2_CONTINUOUS_CLOCK);
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return (!mipi_lanes || !mipi_clock) ? 0 : common_flags;
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}
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return 0;
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}
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EXPORT_SYMBOL(soc_mbus_config_compatible);
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static int __init soc_mbus_init(void)
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{
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return 0;
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}
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static void __exit soc_mbus_exit(void)
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{
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}
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module_init(soc_mbus_init);
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module_exit(soc_mbus_exit);
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MODULE_DESCRIPTION("soc-camera media bus interface");
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MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");
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MODULE_LICENSE("GPL v2");
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