255 строки
8.7 KiB
C
255 строки
8.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Media Bus API header
|
|
*
|
|
* Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
|
|
*/
|
|
|
|
#ifndef V4L2_MEDIABUS_H
|
|
#define V4L2_MEDIABUS_H
|
|
|
|
#include <linux/v4l2-mediabus.h>
|
|
#include <linux/bitops.h>
|
|
|
|
/*
|
|
* How to use the V4L2_MBUS_* flags:
|
|
* Flags are defined for each of the possible states and values of a media
|
|
* bus configuration parameter. One and only one bit of each group of flags
|
|
* shall be set by the users of the v4l2_subdev_pad_ops.get_mbus_config
|
|
* operation to ensure that no conflicting settings are specified when
|
|
* reporting the media bus configuration. For example, it is invalid to set or
|
|
* clear both the V4L2_MBUS_HSYNC_ACTIVE_HIGH and the
|
|
* V4L2_MBUS_HSYNC_ACTIVE_LOW flag at the same time. Instead either flag
|
|
* V4L2_MBUS_HSYNC_ACTIVE_HIGH or flag V4L2_MBUS_HSYNC_ACTIVE_LOW shall be set.
|
|
*
|
|
* TODO: replace the existing V4L2_MBUS_* flags with structures of fields
|
|
* to avoid conflicting settings.
|
|
*
|
|
* In example:
|
|
* #define V4L2_MBUS_HSYNC_ACTIVE_HIGH BIT(2)
|
|
* #define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3)
|
|
* will be replaced by a field whose value reports the intended active state of
|
|
* the signal:
|
|
* unsigned int v4l2_mbus_hsync_active : 1;
|
|
*/
|
|
|
|
/* Parallel flags */
|
|
/*
|
|
* The client runs 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 BIT(0)
|
|
#define V4L2_MBUS_SLAVE BIT(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 BIT(2)
|
|
#define V4L2_MBUS_HSYNC_ACTIVE_LOW BIT(3)
|
|
#define V4L2_MBUS_VSYNC_ACTIVE_HIGH BIT(4)
|
|
#define V4L2_MBUS_VSYNC_ACTIVE_LOW BIT(5)
|
|
#define V4L2_MBUS_PCLK_SAMPLE_RISING BIT(6)
|
|
#define V4L2_MBUS_PCLK_SAMPLE_FALLING BIT(7)
|
|
#define V4L2_MBUS_DATA_ACTIVE_HIGH BIT(8)
|
|
#define V4L2_MBUS_DATA_ACTIVE_LOW BIT(9)
|
|
/* FIELD = 0/1 - Field1 (odd)/Field2 (even) */
|
|
#define V4L2_MBUS_FIELD_EVEN_HIGH BIT(10)
|
|
/* FIELD = 1/0 - Field1 (odd)/Field2 (even) */
|
|
#define V4L2_MBUS_FIELD_EVEN_LOW BIT(11)
|
|
/* Active state of Sync-on-green (SoG) signal, 0/1 for LOW/HIGH respectively. */
|
|
#define V4L2_MBUS_VIDEO_SOG_ACTIVE_HIGH BIT(12)
|
|
#define V4L2_MBUS_VIDEO_SOG_ACTIVE_LOW BIT(13)
|
|
#define V4L2_MBUS_DATA_ENABLE_HIGH BIT(14)
|
|
#define V4L2_MBUS_DATA_ENABLE_LOW BIT(15)
|
|
|
|
/* Serial flags */
|
|
/* Clock non-continuous mode support. */
|
|
#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK BIT(0)
|
|
|
|
#define V4L2_MBUS_CSI2_MAX_DATA_LANES 8
|
|
|
|
/**
|
|
* struct v4l2_mbus_config_mipi_csi2 - MIPI CSI-2 data bus configuration
|
|
* @flags: media bus (V4L2_MBUS_*) flags
|
|
* @data_lanes: an array of physical data lane indexes
|
|
* @clock_lane: physical lane index of the clock lane
|
|
* @num_data_lanes: number of data lanes
|
|
* @lane_polarities: polarity of the lanes. The order is the same of
|
|
* the physical lanes.
|
|
*/
|
|
struct v4l2_mbus_config_mipi_csi2 {
|
|
unsigned int flags;
|
|
unsigned char data_lanes[V4L2_MBUS_CSI2_MAX_DATA_LANES];
|
|
unsigned char clock_lane;
|
|
unsigned char num_data_lanes;
|
|
bool lane_polarities[1 + V4L2_MBUS_CSI2_MAX_DATA_LANES];
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_mbus_config_parallel - parallel data bus configuration
|
|
* @flags: media bus (V4L2_MBUS_*) flags
|
|
* @bus_width: bus width in bits
|
|
* @data_shift: data shift in bits
|
|
*/
|
|
struct v4l2_mbus_config_parallel {
|
|
unsigned int flags;
|
|
unsigned char bus_width;
|
|
unsigned char data_shift;
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_mbus_config_mipi_csi1 - CSI-1/CCP2 data bus configuration
|
|
* @clock_inv: polarity of clock/strobe signal
|
|
* false - not inverted, true - inverted
|
|
* @strobe: false - data/clock, true - data/strobe
|
|
* @lane_polarity: the polarities of the clock (index 0) and data lanes
|
|
* index (1)
|
|
* @data_lane: the number of the data lane
|
|
* @clock_lane: the number of the clock lane
|
|
*/
|
|
struct v4l2_mbus_config_mipi_csi1 {
|
|
unsigned char clock_inv:1;
|
|
unsigned char strobe:1;
|
|
bool lane_polarity[2];
|
|
unsigned char data_lane;
|
|
unsigned char clock_lane;
|
|
};
|
|
|
|
/**
|
|
* enum v4l2_mbus_type - media bus type
|
|
* @V4L2_MBUS_UNKNOWN: unknown bus type, no V4L2 mediabus configuration
|
|
* @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_CSI1: MIPI CSI-1 serial interface
|
|
* @V4L2_MBUS_CCP2: CCP2 (Compact Camera Port 2)
|
|
* @V4L2_MBUS_CSI2_DPHY: MIPI CSI-2 serial interface, with D-PHY
|
|
* @V4L2_MBUS_CSI2_CPHY: MIPI CSI-2 serial interface, with C-PHY
|
|
* @V4L2_MBUS_DPI: MIPI VIDEO DPI interface
|
|
* @V4L2_MBUS_INVALID: invalid bus type (keep as last)
|
|
*/
|
|
enum v4l2_mbus_type {
|
|
V4L2_MBUS_UNKNOWN,
|
|
V4L2_MBUS_PARALLEL,
|
|
V4L2_MBUS_BT656,
|
|
V4L2_MBUS_CSI1,
|
|
V4L2_MBUS_CCP2,
|
|
V4L2_MBUS_CSI2_DPHY,
|
|
V4L2_MBUS_CSI2_CPHY,
|
|
V4L2_MBUS_DPI,
|
|
V4L2_MBUS_INVALID,
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_mbus_config - media bus configuration
|
|
* @type: interface type
|
|
* @bus: bus configuration data structure
|
|
* @bus.parallel: embedded &struct v4l2_mbus_config_parallel.
|
|
* Used if the bus is parallel or BT.656.
|
|
* @bus.mipi_csi1: embedded &struct v4l2_mbus_config_mipi_csi1.
|
|
* Used if the bus is MIPI Alliance's Camera Serial
|
|
* Interface version 1 (MIPI CSI1) or Standard
|
|
* Mobile Imaging Architecture's Compact Camera Port 2
|
|
* (SMIA CCP2).
|
|
* @bus.mipi_csi2: embedded &struct v4l2_mbus_config_mipi_csi2.
|
|
* Used if the bus is MIPI Alliance's Camera Serial
|
|
* Interface version 2 (MIPI CSI2).
|
|
*/
|
|
struct v4l2_mbus_config {
|
|
enum v4l2_mbus_type type;
|
|
union {
|
|
struct v4l2_mbus_config_parallel parallel;
|
|
struct v4l2_mbus_config_mipi_csi1 mipi_csi1;
|
|
struct v4l2_mbus_config_mipi_csi2 mipi_csi2;
|
|
} bus;
|
|
};
|
|
|
|
/**
|
|
* v4l2_fill_pix_format - Ancillary routine that fills a &struct
|
|
* v4l2_pix_format fields from a &struct v4l2_mbus_framefmt.
|
|
*
|
|
* @pix_fmt: pointer to &struct v4l2_pix_format to be filled
|
|
* @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
|
|
*/
|
|
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;
|
|
pix_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
|
|
pix_fmt->quantization = mbus_fmt->quantization;
|
|
pix_fmt->xfer_func = mbus_fmt->xfer_func;
|
|
}
|
|
|
|
/**
|
|
* v4l2_fill_mbus_format - Ancillary routine that fills a &struct
|
|
* v4l2_mbus_framefmt from a &struct v4l2_pix_format and a
|
|
* data format code.
|
|
*
|
|
* @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
|
|
* @pix_fmt: pointer to &struct v4l2_pix_format to be used as model
|
|
* @code: data format code (from &enum v4l2_mbus_pixelcode)
|
|
*/
|
|
static inline void v4l2_fill_mbus_format(struct v4l2_mbus_framefmt *mbus_fmt,
|
|
const struct v4l2_pix_format *pix_fmt,
|
|
u32 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->ycbcr_enc = pix_fmt->ycbcr_enc;
|
|
mbus_fmt->quantization = pix_fmt->quantization;
|
|
mbus_fmt->xfer_func = pix_fmt->xfer_func;
|
|
mbus_fmt->code = code;
|
|
}
|
|
|
|
/**
|
|
* v4l2_fill_pix_format_mplane - Ancillary routine that fills a &struct
|
|
* v4l2_pix_format_mplane fields from a media bus structure.
|
|
*
|
|
* @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be filled
|
|
* @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be used as model
|
|
*/
|
|
static inline void
|
|
v4l2_fill_pix_format_mplane(struct v4l2_pix_format_mplane *pix_mp_fmt,
|
|
const struct v4l2_mbus_framefmt *mbus_fmt)
|
|
{
|
|
pix_mp_fmt->width = mbus_fmt->width;
|
|
pix_mp_fmt->height = mbus_fmt->height;
|
|
pix_mp_fmt->field = mbus_fmt->field;
|
|
pix_mp_fmt->colorspace = mbus_fmt->colorspace;
|
|
pix_mp_fmt->ycbcr_enc = mbus_fmt->ycbcr_enc;
|
|
pix_mp_fmt->quantization = mbus_fmt->quantization;
|
|
pix_mp_fmt->xfer_func = mbus_fmt->xfer_func;
|
|
}
|
|
|
|
/**
|
|
* v4l2_fill_mbus_format_mplane - Ancillary routine that fills a &struct
|
|
* v4l2_mbus_framefmt from a &struct v4l2_pix_format_mplane.
|
|
*
|
|
* @mbus_fmt: pointer to &struct v4l2_mbus_framefmt to be filled
|
|
* @pix_mp_fmt: pointer to &struct v4l2_pix_format_mplane to be used as model
|
|
*/
|
|
static inline void
|
|
v4l2_fill_mbus_format_mplane(struct v4l2_mbus_framefmt *mbus_fmt,
|
|
const struct v4l2_pix_format_mplane *pix_mp_fmt)
|
|
{
|
|
mbus_fmt->width = pix_mp_fmt->width;
|
|
mbus_fmt->height = pix_mp_fmt->height;
|
|
mbus_fmt->field = pix_mp_fmt->field;
|
|
mbus_fmt->colorspace = pix_mp_fmt->colorspace;
|
|
mbus_fmt->ycbcr_enc = pix_mp_fmt->ycbcr_enc;
|
|
mbus_fmt->quantization = pix_mp_fmt->quantization;
|
|
mbus_fmt->xfer_func = pix_mp_fmt->xfer_func;
|
|
}
|
|
|
|
#endif
|