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
/*
|
|
* Media Bus API header
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef V4L2_MEDIABUS_H
|
|
#define V4L2_MEDIABUS_H
|
|
|
|
#include <linux/v4l2-mediabus.h>
|
|
|
|
/* Parallel flags */
|
|
/*
|
|
* Can the client run in master or in slave mode. By "Master mode" an operation
|
|
* mode is meant, when the client (e.g., a camera sensor) is producing
|
|
* horizontal and vertical synchronisation. In "Slave mode" the host is
|
|
* providing these signals to the slave.
|
|
*/
|
|
#define V4L2_MBUS_MASTER (1 << 0)
|
|
#define V4L2_MBUS_SLAVE (1 << 1)
|
|
/*
|
|
* Signal polarity flags
|
|
* Note: in BT.656 mode HSYNC, FIELD, and VSYNC are unused
|
|
* V4L2_MBUS_[HV]SYNC* flags should be also used for specifying
|
|
* configuration of hardware that uses [HV]REF signals
|
|
*/
|
|
#define V4L2_MBUS_HSYNC_ACTIVE_HIGH (1 << 2)
|
|
#define V4L2_MBUS_HSYNC_ACTIVE_LOW (1 << 3)
|
|
#define V4L2_MBUS_VSYNC_ACTIVE_HIGH (1 << 4)
|
|
#define V4L2_MBUS_VSYNC_ACTIVE_LOW (1 << 5)
|
|
#define V4L2_MBUS_PCLK_SAMPLE_RISING (1 << 6)
|
|
#define V4L2_MBUS_PCLK_SAMPLE_FALLING (1 << 7)
|
|
#define V4L2_MBUS_DATA_ACTIVE_HIGH (1 << 8)
|
|
#define V4L2_MBUS_DATA_ACTIVE_LOW (1 << 9)
|
|
/* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
|
|
#define V4L2_MBUS_FIELD_EVEN_HIGH (1 << 10)
|
|
/* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
|
|
#define V4L2_MBUS_FIELD_EVEN_LOW (1 << 11)
|
|
|
|
/* Serial flags */
|
|
/* How many lanes the client can use */
|
|
#define V4L2_MBUS_CSI2_1_LANE (1 << 0)
|
|
#define V4L2_MBUS_CSI2_2_LANE (1 << 1)
|
|
#define V4L2_MBUS_CSI2_3_LANE (1 << 2)
|
|
#define V4L2_MBUS_CSI2_4_LANE (1 << 3)
|
|
/* On which channels it can send video data */
|
|
#define V4L2_MBUS_CSI2_CHANNEL_0 (1 << 4)
|
|
#define V4L2_MBUS_CSI2_CHANNEL_1 (1 << 5)
|
|
#define V4L2_MBUS_CSI2_CHANNEL_2 (1 << 6)
|
|
#define V4L2_MBUS_CSI2_CHANNEL_3 (1 << 7)
|
|
/* Does it support only continuous or also non-continuous clock mode */
|
|
#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK (1 << 8)
|
|
#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK (1 << 9)
|
|
|
|
#define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \
|
|
V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE)
|
|
#define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CHANNEL_1 | \
|
|
V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3)
|
|
|
|
/**
|
|
* v4l2_mbus_type - media bus type
|
|
* @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync
|
|
* @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can
|
|
* also be used for BT.1120
|
|
* @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface
|
|
*/
|
|
enum v4l2_mbus_type {
|
|
V4L2_MBUS_PARALLEL,
|
|
V4L2_MBUS_BT656,
|
|
V4L2_MBUS_CSI2,
|
|
};
|
|
|
|
/**
|
|
* v4l2_mbus_config - media bus configuration
|
|
* @type: in: interface type
|
|
* @flags: in / out: configuration flags, depending on @type
|
|
*/
|
|
struct v4l2_mbus_config {
|
|
enum v4l2_mbus_type type;
|
|
unsigned int flags;
|
|
};
|
|
|
|
static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt,
|
|
const struct v4l2_mbus_framefmt *mbus_fmt)
|
|
{
|
|
pix_fmt->width = mbus_fmt->width;
|
|
pix_fmt->height = mbus_fmt->height;
|
|
pix_fmt->field = mbus_fmt->field;
|
|
pix_fmt->colorspace = mbus_fmt->colorspace;
|
|
}
|
|
|
|
static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
|
|
const struct v4l2_pix_format *pix_fmt,
|
|
enum v4l2_mbus_pixelcode code)
|
|
{
|
|
mbus_fmt->width = pix_fmt->width;
|
|
mbus_fmt->height = pix_fmt->height;
|
|
mbus_fmt->field = pix_fmt->field;
|
|
mbus_fmt->colorspace = pix_fmt->colorspace;
|
|
mbus_fmt->code = code;
|
|
}
|
|
|
|
#endif
|