534 lines
13 KiB
C
534 lines
13 KiB
C
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/*
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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/drv-intf/soc_mediabus.h>
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static const struct soc_mbus_lookup mbus_fmt[] = {
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{
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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_BE,
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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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_BE,
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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_FMT_RGB666_1X18,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_RGB32,
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.name = "RGB666/32bpp",
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.bits_per_sample = 18,
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.packing = SOC_MBUS_PACKING_EXTEND32,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = MEDIA_BUS_FMT_RGB888_1X24,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_RGB32,
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.name = "RGB888/32bpp",
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.bits_per_sample = 24,
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.packing = SOC_MBUS_PACKING_EXTEND32,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = MEDIA_BUS_FMT_RGB888_2X12_BE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_RGB32,
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.name = "RGB888/32bpp",
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.bits_per_sample = 12,
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.packing = SOC_MBUS_PACKING_EXTEND32,
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.order = SOC_MBUS_ORDER_BE,
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},
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}, {
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.code = MEDIA_BUS_FMT_RGB888_2X12_LE,
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.fmt = {
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.fourcc = V4L2_PIX_FMT_RGB32,
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.name = "RGB888/32bpp",
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.bits_per_sample = 12,
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.packing = SOC_MBUS_PACKING_EXTEND32,
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.order = SOC_MBUS_ORDER_LE,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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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.layout = SOC_MBUS_LAYOUT_PACKED,
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},
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}, {
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.code = MEDIA_BUS_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,
|
||
|
|
.packing = SOC_MBUS_PACKING_EXTEND16,
|
||
|
|
.order = SOC_MBUS_ORDER_LE,
|
||
|
|
.layout = SOC_MBUS_LAYOUT_PACKED,
|
||
|
|
},
|
||
|
|
}, {
|
||
|
|
.code = MEDIA_BUS_FMT_SRGGB10_1X10,
|
||
|
|
.fmt = {
|
||
|
|
.fourcc = V4L2_PIX_FMT_SRGGB10,
|
||
|
|
.name = "Bayer 10 RGGB",
|
||
|
|
.bits_per_sample = 10,
|
||
|
|
.packing = SOC_MBUS_PACKING_EXTEND16,
|
||
|
|
.order = SOC_MBUS_ORDER_LE,
|
||
|
|
.layout = SOC_MBUS_LAYOUT_PACKED,
|
||
|
|
},
|
||
|
|
}, {
|
||
|
|
.code = MEDIA_BUS_FMT_SBGGR12_1X12,
|
||
|
|
.fmt = {
|
||
|
|
.fourcc = V4L2_PIX_FMT_SBGGR12,
|
||
|
|
.name = "Bayer 12 BGGR",
|
||
|
|
.bits_per_sample = 12,
|
||
|
|
.packing = SOC_MBUS_PACKING_EXTEND16,
|
||
|
|
.order = SOC_MBUS_ORDER_LE,
|
||
|
|
.layout = SOC_MBUS_LAYOUT_PACKED,
|
||
|
|
},
|
||
|
|
}, {
|
||
|
|
.code = MEDIA_BUS_FMT_SGBRG12_1X12,
|
||
|
|
.fmt = {
|
||
|
|
.fourcc = V4L2_PIX_FMT_SGBRG12,
|
||
|
|
.name = "Bayer 12 GBRG",
|
||
|
|
.bits_per_sample = 12,
|
||
|
|
.packing = SOC_MBUS_PACKING_EXTEND16,
|
||
|
|
.order = SOC_MBUS_ORDER_LE,
|
||
|
|
.layout = SOC_MBUS_LAYOUT_PACKED,
|
||
|
|
},
|
||
|
|
}, {
|
||
|
|
.code = MEDIA_BUS_FMT_SGRBG12_1X12,
|
||
|
|
.fmt = {
|
||
|
|
.fourcc = V4L2_PIX_FMT_SGRBG12,
|
||
|
|
.name = "Bayer 12 GRBG",
|
||
|
|
.bits_per_sample = 12,
|
||
|
|
.packing = SOC_MBUS_PACKING_EXTEND16,
|
||
|
|
.order = SOC_MBUS_ORDER_LE,
|
||
|
|
.layout = SOC_MBUS_LAYOUT_PACKED,
|
||
|
|
},
|
||
|
|
}, {
|
||
|
|
.code = MEDIA_BUS_FMT_SRGGB12_1X12,
|
||
|
|
.fmt = {
|
||
|
|
.fourcc = V4L2_PIX_FMT_SRGGB12,
|
||
|
|
.name = "Bayer 12 RGGB",
|
||
|
|
.bits_per_sample = 12,
|
||
|
|
.packing = SOC_MBUS_PACKING_EXTEND16,
|
||
|
|
.order = SOC_MBUS_ORDER_LE,
|
||
|
|
.layout = SOC_MBUS_LAYOUT_PACKED,
|
||
|
|
},
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
int soc_mbus_samples_per_pixel(const struct soc_mbus_pixelfmt *mf,
|
||
|
|
unsigned int *numerator, unsigned int *denominator)
|
||
|
|
{
|
||
|
|
switch (mf->packing) {
|
||
|
|
case SOC_MBUS_PACKING_NONE:
|
||
|
|
case SOC_MBUS_PACKING_EXTEND16:
|
||
|
|
*numerator = 1;
|
||
|
|
*denominator = 1;
|
||
|
|
return 0;
|
||
|
|
case SOC_MBUS_PACKING_EXTEND32:
|
||
|
|
*numerator = 1;
|
||
|
|
*denominator = 1;
|
||
|
|
return 0;
|
||
|
|
case SOC_MBUS_PACKING_2X8_PADHI:
|
||
|
|
case SOC_MBUS_PACKING_2X8_PADLO:
|
||
|
|
*numerator = 2;
|
||
|
|
*denominator = 1;
|
||
|
|
return 0;
|
||
|
|
case SOC_MBUS_PACKING_1_5X8:
|
||
|
|
*numerator = 3;
|
||
|
|
*denominator = 2;
|
||
|
|
return 0;
|
||
|
|
case SOC_MBUS_PACKING_VARIABLE:
|
||
|
|
*numerator = 0;
|
||
|
|
*denominator = 1;
|
||
|
|
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)
|
||
|
|
{
|
||
|
|
if (mf->layout != SOC_MBUS_LAYOUT_PACKED)
|
||
|
|
return width * mf->bits_per_sample / 8;
|
||
|
|
|
||
|
|
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_1_5X8:
|
||
|
|
return width * 3 / 2;
|
||
|
|
case SOC_MBUS_PACKING_VARIABLE:
|
||
|
|
return 0;
|
||
|
|
case SOC_MBUS_PACKING_EXTEND32:
|
||
|
|
return width * 4;
|
||
|
|
}
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(soc_mbus_bytes_per_line);
|
||
|
|
|
||
|
|
s32 soc_mbus_image_size(const struct soc_mbus_pixelfmt *mf,
|
||
|
|
u32 bytes_per_line, u32 height)
|
||
|
|
{
|
||
|
|
if (mf->layout == SOC_MBUS_LAYOUT_PACKED)
|
||
|
|
return bytes_per_line * height;
|
||
|
|
|
||
|
|
switch (mf->packing) {
|
||
|
|
case SOC_MBUS_PACKING_2X8_PADHI:
|
||
|
|
case SOC_MBUS_PACKING_2X8_PADLO:
|
||
|
|
return bytes_per_line * height * 2;
|
||
|
|
case SOC_MBUS_PACKING_1_5X8:
|
||
|
|
return bytes_per_line * height * 3 / 2;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(soc_mbus_image_size);
|
||
|
|
|
||
|
|
const struct soc_mbus_pixelfmt *soc_mbus_find_fmtdesc(
|
||
|
|
u32 code,
|
||
|
|
const struct soc_mbus_lookup *lookup,
|
||
|
|
int n)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < n; i++)
|
||
|
|
if (lookup[i].code == code)
|
||
|
|
return &lookup[i].fmt;
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(soc_mbus_find_fmtdesc);
|
||
|
|
|
||
|
|
const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
|
||
|
|
u32 code)
|
||
|
|
{
|
||
|
|
return soc_mbus_find_fmtdesc(code, mbus_fmt, ARRAY_SIZE(mbus_fmt));
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(soc_mbus_get_fmtdesc);
|
||
|
|
|
||
|
|
unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
|
||
|
|
unsigned int flags)
|
||
|
|
{
|
||
|
|
unsigned long common_flags;
|
||
|
|
bool hsync = true, vsync = true, pclk, data, mode;
|
||
|
|
bool mipi_lanes, mipi_clock;
|
||
|
|
|
||
|
|
common_flags = cfg->flags & flags;
|
||
|
|
|
||
|
|
switch (cfg->type) {
|
||
|
|
case V4L2_MBUS_PARALLEL:
|
||
|
|
hsync = common_flags & (V4L2_MBUS_HSYNC_ACTIVE_HIGH |
|
||
|
|
V4L2_MBUS_HSYNC_ACTIVE_LOW);
|
||
|
|
vsync = common_flags & (V4L2_MBUS_VSYNC_ACTIVE_HIGH |
|
||
|
|
V4L2_MBUS_VSYNC_ACTIVE_LOW);
|
||
|
|
/* fall through */
|
||
|
|
case V4L2_MBUS_BT656:
|
||
|
|
pclk = common_flags & (V4L2_MBUS_PCLK_SAMPLE_RISING |
|
||
|
|
V4L2_MBUS_PCLK_SAMPLE_FALLING);
|
||
|
|
data = common_flags & (V4L2_MBUS_DATA_ACTIVE_HIGH |
|
||
|
|
V4L2_MBUS_DATA_ACTIVE_LOW);
|
||
|
|
mode = common_flags & (V4L2_MBUS_MASTER | V4L2_MBUS_SLAVE);
|
||
|
|
return (!hsync || !vsync || !pclk || !data || !mode) ?
|
||
|
|
0 : common_flags;
|
||
|
|
case V4L2_MBUS_CSI2:
|
||
|
|
mipi_lanes = common_flags & V4L2_MBUS_CSI2_LANES;
|
||
|
|
mipi_clock = common_flags & (V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK |
|
||
|
|
V4L2_MBUS_CSI2_CONTINUOUS_CLOCK);
|
||
|
|
return (!mipi_lanes || !mipi_clock) ? 0 : common_flags;
|
||
|
|
default:
|
||
|
|
WARN_ON(1);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(soc_mbus_config_compatible);
|
||
|
|
|
||
|
|
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");
|