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642ac63d16
The V4L2 core sets the format description and flags for the driver in order to ensure consistent naming. So drop the strscpy of the description in drivers. Also remove any description strings in driver-internal structures since those are no longer needed. Note that bcm2835-camera.c: the formats array still stores the flags field for compressed formats since that information is used elsewhere in the driver. But enum_fmt doesn't use it anymore, since the core will set the COMPRESSED flag correctly. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
107 lines
3.3 KiB
C
107 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* SoC-camera Media Bus API extensions
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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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#ifndef SOC_MEDIABUS_H
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#define SOC_MEDIABUS_H
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#include <linux/videodev2.h>
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#include <linux/v4l2-mediabus.h>
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/**
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* enum soc_mbus_packing - data packing types on the media-bus
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* @SOC_MBUS_PACKING_NONE: no packing, bit-for-bit transfer to RAM, one
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* sample represents one pixel
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* @SOC_MBUS_PACKING_2X8_PADHI: 16 bits transferred in 2 8-bit samples, in the
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* possibly incomplete byte high bits are padding
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* @SOC_MBUS_PACKING_2X8_PADLO: as above, but low bits are padding
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* @SOC_MBUS_PACKING_EXTEND16: sample width (e.g., 10 bits) has to be extended
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* to 16 bits
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* @SOC_MBUS_PACKING_VARIABLE: compressed formats with variable packing
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* @SOC_MBUS_PACKING_1_5X8: used for packed YUV 4:2:0 formats, where 4
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* pixels occupy 6 bytes in RAM
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* @SOC_MBUS_PACKING_EXTEND32: sample width (e.g., 24 bits) has to be extended
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* to 32 bits
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*/
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enum soc_mbus_packing {
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SOC_MBUS_PACKING_NONE,
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SOC_MBUS_PACKING_2X8_PADHI,
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SOC_MBUS_PACKING_2X8_PADLO,
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SOC_MBUS_PACKING_EXTEND16,
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SOC_MBUS_PACKING_VARIABLE,
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SOC_MBUS_PACKING_1_5X8,
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SOC_MBUS_PACKING_EXTEND32,
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};
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/**
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* enum soc_mbus_order - sample order on the media bus
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* @SOC_MBUS_ORDER_LE: least significant sample first
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* @SOC_MBUS_ORDER_BE: most significant sample first
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*/
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enum soc_mbus_order {
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SOC_MBUS_ORDER_LE,
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SOC_MBUS_ORDER_BE,
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};
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/**
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* enum soc_mbus_layout - planes layout in memory
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* @SOC_MBUS_LAYOUT_PACKED: color components packed
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* @SOC_MBUS_LAYOUT_PLANAR_2Y_U_V: YUV components stored in 3 planes (4:2:2)
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* @SOC_MBUS_LAYOUT_PLANAR_2Y_C: YUV components stored in a luma and a
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* chroma plane (C plane is half the size
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* of Y plane)
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* @SOC_MBUS_LAYOUT_PLANAR_Y_C: YUV components stored in a luma and a
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* chroma plane (C plane is the same size
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* as Y plane)
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*/
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enum soc_mbus_layout {
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SOC_MBUS_LAYOUT_PACKED = 0,
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SOC_MBUS_LAYOUT_PLANAR_2Y_U_V,
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SOC_MBUS_LAYOUT_PLANAR_2Y_C,
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SOC_MBUS_LAYOUT_PLANAR_Y_C,
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};
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/**
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* struct soc_mbus_pixelfmt - Data format on the media bus
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* @fourcc: Fourcc code, that will be obtained if the data is
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* stored in memory in the following way:
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* @packing: Type of sample-packing, that has to be used
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* @order: Sample order when storing in memory
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* @bits_per_sample: How many bits the bridge has to sample
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*/
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struct soc_mbus_pixelfmt {
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u32 fourcc;
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enum soc_mbus_packing packing;
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enum soc_mbus_order order;
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enum soc_mbus_layout layout;
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u8 bits_per_sample;
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};
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/**
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* struct soc_mbus_lookup - Lookup FOURCC IDs by mediabus codes for pass-through
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* @code: mediabus pixel-code
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* @fmt: pixel format description
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*/
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struct soc_mbus_lookup {
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u32 code;
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struct soc_mbus_pixelfmt fmt;
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};
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const struct soc_mbus_pixelfmt *soc_mbus_find_fmtdesc(
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u32 code,
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const struct soc_mbus_lookup *lookup,
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int n);
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const struct soc_mbus_pixelfmt *soc_mbus_get_fmtdesc(
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u32 code);
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s32 soc_mbus_bytes_per_line(u32 width, const struct soc_mbus_pixelfmt *mf);
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s32 soc_mbus_image_size(const struct soc_mbus_pixelfmt *mf,
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u32 bytes_per_line, u32 height);
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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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unsigned int soc_mbus_config_compatible(const struct v4l2_mbus_config *cfg,
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unsigned int flags);
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#endif
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