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3c6938f805
FIELD signal is used for indicating frame field type to the frame grabber in interlaced scan mode, as specified in ITU-R BT.601 standard. In normal operation mode FIELD = 0 selects Field1 (odd) and FIELD = 1 selects Field2 (even). When the FIELD signal is inverted it's the other way around. Add corresponding flags for configuring the FIELD signal polarity, V4L2_MBUS_FIELD_EVEN_HIGH for the standard (non-inverted) case and V4L2_MBUS_FIELD_EVEN_LOW for inverted case. Also add a comment about usage of V4L2_MBUS_[HV]SYNC* flags for the hardware that uses [HV]REF signals. Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/*
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* Media Bus API header
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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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#ifndef V4L2_MEDIABUS_H
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#define V4L2_MEDIABUS_H
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#include <linux/v4l2-mediabus.h>
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/* Parallel flags */
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/*
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* Can the client run in master or in slave mode. By "Master mode" an operation
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* mode is meant, when the client (e.g., a camera sensor) is producing
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* horizontal and vertical synchronisation. In "Slave mode" the host is
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* providing these signals to the slave.
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*/
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#define V4L2_MBUS_MASTER (1 << 0)
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#define V4L2_MBUS_SLAVE (1 << 1)
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/*
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* Signal polarity flags
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* Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused
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* V4L2_MBUS_[HV]SYNC* flags should be also used for specifying
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* configuration of hardware that uses [HV]REF signals
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*/
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#define V4L2_MBUS_HSYNC_ACTIVE_HIGH (1 << 2)
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#define V4L2_MBUS_HSYNC_ACTIVE_LOW (1 << 3)
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#define V4L2_MBUS_VSYNC_ACTIVE_HIGH (1 << 4)
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#define V4L2_MBUS_VSYNC_ACTIVE_LOW (1 << 5)
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#define V4L2_MBUS_PCLK_SAMPLE_RISING (1 << 6)
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#define V4L2_MBUS_PCLK_SAMPLE_FALLING (1 << 7)
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#define V4L2_MBUS_DATA_ACTIVE_HIGH (1 << 8)
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#define V4L2_MBUS_DATA_ACTIVE_LOW (1 << 9)
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/* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
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#define V4L2_MBUS_FIELD_EVEN_HIGH (1 << 10)
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/* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
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#define V4L2_MBUS_FIELD_EVEN_LOW (1 << 11)
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/* Serial flags */
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/* How many lanes the client can use */
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#define V4L2_MBUS_CSI2_1_LANE (1 << 0)
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#define V4L2_MBUS_CSI2_2_LANE (1 << 1)
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#define V4L2_MBUS_CSI2_3_LANE (1 << 2)
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#define V4L2_MBUS_CSI2_4_LANE (1 << 3)
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/* On which channels it can send video data */
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#define V4L2_MBUS_CSI2_CHANNEL_0 (1 << 4)
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#define V4L2_MBUS_CSI2_CHANNEL_1 (1 << 5)
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#define V4L2_MBUS_CSI2_CHANNEL_2 (1 << 6)
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#define V4L2_MBUS_CSI2_CHANNEL_3 (1 << 7)
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/* Does it support only continuous or also non-continuous clock mode */
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#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK (1 << 8)
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#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK (1 << 9)
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#define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \
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V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE)
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#define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CHANNEL_1 | \
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V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3)
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/**
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* v4l2_mbus_type - media bus type
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* @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync
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* @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can
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* also be used for BT.1120
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* @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface
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*/
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enum v4l2_mbus_type {
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V4L2_MBUS_PARALLEL,
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V4L2_MBUS_BT656,
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V4L2_MBUS_CSI2,
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};
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/**
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* v4l2_mbus_config - media bus configuration
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* @type: in: interface type
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* @flags: in / out: configuration flags, depending on @type
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*/
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struct v4l2_mbus_config {
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enum v4l2_mbus_type type;
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unsigned int flags;
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};
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static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
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const struct v4l2_mbus_framefmt *mbus_fmt)
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{
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pix_fmt->width = mbus_fmt->width;
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pix_fmt->height = mbus_fmt->height;
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pix_fmt->field = mbus_fmt->field;
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pix_fmt->colorspace = mbus_fmt->colorspace;
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}
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static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
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const struct v4l2_pix_format *pix_fmt,
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enum v4l2_mbus_pixelcode code)
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{
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mbus_fmt->width = pix_fmt->width;
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mbus_fmt->height = pix_fmt->height;
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mbus_fmt->field = pix_fmt->field;
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mbus_fmt->colorspace = pix_fmt->colorspace;
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mbus_fmt->code = code;
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}
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#endif
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