536 строки
20 KiB
C
536 строки
20 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* V4L2 fwnode binding parsing library
|
|
*
|
|
* Copyright (c) 2016 Intel Corporation.
|
|
* Author: Sakari Ailus <sakari.ailus@linux.intel.com>
|
|
*
|
|
* Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
|
|
* Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
|
|
*
|
|
* Copyright (C) 2012 Renesas Electronics Corp.
|
|
* Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
|
|
*/
|
|
#ifndef _V4L2_FWNODE_H
|
|
#define _V4L2_FWNODE_H
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/fwnode.h>
|
|
#include <linux/list.h>
|
|
#include <linux/types.h>
|
|
|
|
#include <media/v4l2-mediabus.h>
|
|
|
|
struct fwnode_handle;
|
|
struct v4l2_async_notifier;
|
|
struct v4l2_async_subdev;
|
|
|
|
#define V4L2_FWNODE_CSI2_MAX_DATA_LANES 8
|
|
|
|
/**
|
|
* struct v4l2_fwnode_bus_mipi_csi2 - MIPI CSI-2 bus data structure
|
|
* @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_fwnode_bus_mipi_csi2 {
|
|
unsigned int flags;
|
|
unsigned char data_lanes[V4L2_FWNODE_CSI2_MAX_DATA_LANES];
|
|
unsigned char clock_lane;
|
|
unsigned char num_data_lanes;
|
|
bool lane_polarities[1 + V4L2_FWNODE_CSI2_MAX_DATA_LANES];
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_fwnode_bus_parallel - parallel data bus data structure
|
|
* @flags: media bus (V4L2_MBUS_*) flags
|
|
* @bus_width: bus width in bits
|
|
* @data_shift: data shift in bits
|
|
*/
|
|
struct v4l2_fwnode_bus_parallel {
|
|
unsigned int flags;
|
|
unsigned char bus_width;
|
|
unsigned char data_shift;
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_fwnode_bus_mipi_csi1 - CSI-1/CCP2 data bus structure
|
|
* @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_fwnode_bus_mipi_csi1 {
|
|
unsigned char clock_inv:1;
|
|
unsigned char strobe:1;
|
|
bool lane_polarity[2];
|
|
unsigned char data_lane;
|
|
unsigned char clock_lane;
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_fwnode_endpoint - the endpoint data structure
|
|
* @base: fwnode endpoint of the v4l2_fwnode
|
|
* @bus_type: bus type
|
|
* @bus: bus configuration data structure
|
|
* @bus.parallel: embedded &struct v4l2_fwnode_bus_parallel.
|
|
* Used if the bus is parallel.
|
|
* @bus.mipi_csi1: embedded &struct v4l2_fwnode_bus_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_fwnode_bus_mipi_csi2.
|
|
* Used if the bus is MIPI Alliance's Camera Serial
|
|
* Interface version 2 (MIPI CSI2).
|
|
* @link_frequencies: array of supported link frequencies
|
|
* @nr_of_link_frequencies: number of elements in link_frequenccies array
|
|
*/
|
|
struct v4l2_fwnode_endpoint {
|
|
struct fwnode_endpoint base;
|
|
/*
|
|
* Fields below this line will be zeroed by
|
|
* v4l2_fwnode_endpoint_parse()
|
|
*/
|
|
enum v4l2_mbus_type bus_type;
|
|
struct {
|
|
struct v4l2_fwnode_bus_parallel parallel;
|
|
struct v4l2_fwnode_bus_mipi_csi1 mipi_csi1;
|
|
struct v4l2_fwnode_bus_mipi_csi2 mipi_csi2;
|
|
} bus;
|
|
u64 *link_frequencies;
|
|
unsigned int nr_of_link_frequencies;
|
|
};
|
|
|
|
/**
|
|
* V4L2_FWNODE_PROPERTY_UNSET - identify a non initialized property
|
|
*
|
|
* All properties in &struct v4l2_fwnode_device_properties are initialized
|
|
* to this value.
|
|
*/
|
|
#define V4L2_FWNODE_PROPERTY_UNSET (-1U)
|
|
|
|
/**
|
|
* enum v4l2_fwnode_orientation - possible device orientation
|
|
* @V4L2_FWNODE_ORIENTATION_FRONT: device installed on the front side
|
|
* @V4L2_FWNODE_ORIENTATION_BACK: device installed on the back side
|
|
* @V4L2_FWNODE_ORIENTATION_EXTERNAL: device externally located
|
|
*/
|
|
enum v4l2_fwnode_orientation {
|
|
V4L2_FWNODE_ORIENTATION_FRONT,
|
|
V4L2_FWNODE_ORIENTATION_BACK,
|
|
V4L2_FWNODE_ORIENTATION_EXTERNAL
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_fwnode_device_properties - fwnode device properties
|
|
* @orientation: device orientation. See &enum v4l2_fwnode_orientation
|
|
* @rotation: device rotation
|
|
*/
|
|
struct v4l2_fwnode_device_properties {
|
|
enum v4l2_fwnode_orientation orientation;
|
|
unsigned int rotation;
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_fwnode_link - a link between two endpoints
|
|
* @local_node: pointer to device_node of this endpoint
|
|
* @local_port: identifier of the port this endpoint belongs to
|
|
* @local_id: identifier of the id this endpoint belongs to
|
|
* @remote_node: pointer to device_node of the remote endpoint
|
|
* @remote_port: identifier of the port the remote endpoint belongs to
|
|
* @remote_id: identifier of the id the remote endpoint belongs to
|
|
*/
|
|
struct v4l2_fwnode_link {
|
|
struct fwnode_handle *local_node;
|
|
unsigned int local_port;
|
|
unsigned int local_id;
|
|
struct fwnode_handle *remote_node;
|
|
unsigned int remote_port;
|
|
unsigned int remote_id;
|
|
};
|
|
|
|
/**
|
|
* enum v4l2_connector_type - connector type
|
|
* @V4L2_CONN_UNKNOWN: unknown connector type, no V4L2 connector configuration
|
|
* @V4L2_CONN_COMPOSITE: analog composite connector
|
|
* @V4L2_CONN_SVIDEO: analog svideo connector
|
|
*/
|
|
enum v4l2_connector_type {
|
|
V4L2_CONN_UNKNOWN,
|
|
V4L2_CONN_COMPOSITE,
|
|
V4L2_CONN_SVIDEO,
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_connector_link - connector link data structure
|
|
* @head: structure to be used to add the link to the
|
|
* &struct v4l2_fwnode_connector
|
|
* @fwnode_link: &struct v4l2_fwnode_link link between the connector and the
|
|
* device the connector belongs to.
|
|
*/
|
|
struct v4l2_connector_link {
|
|
struct list_head head;
|
|
struct v4l2_fwnode_link fwnode_link;
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_fwnode_connector_analog - analog connector data structure
|
|
* @sdtv_stds: sdtv standards this connector supports, set to V4L2_STD_ALL
|
|
* if no restrictions are specified.
|
|
*/
|
|
struct v4l2_fwnode_connector_analog {
|
|
v4l2_std_id sdtv_stds;
|
|
};
|
|
|
|
/**
|
|
* struct v4l2_fwnode_connector - the connector data structure
|
|
* @name: the connector device name
|
|
* @label: optional connector label
|
|
* @type: connector type
|
|
* @links: list of all connector &struct v4l2_connector_link links
|
|
* @nr_of_links: total number of links
|
|
* @connector: connector configuration
|
|
* @connector.analog: analog connector configuration
|
|
* &struct v4l2_fwnode_connector_analog
|
|
*/
|
|
struct v4l2_fwnode_connector {
|
|
const char *name;
|
|
const char *label;
|
|
enum v4l2_connector_type type;
|
|
struct list_head links;
|
|
unsigned int nr_of_links;
|
|
|
|
union {
|
|
struct v4l2_fwnode_connector_analog analog;
|
|
/* future connectors */
|
|
} connector;
|
|
};
|
|
|
|
/**
|
|
* enum v4l2_fwnode_bus_type - Video bus types defined by firmware properties
|
|
* @V4L2_FWNODE_BUS_TYPE_GUESS: Default value if no bus-type fwnode property
|
|
* @V4L2_FWNODE_BUS_TYPE_CSI2_CPHY: MIPI CSI-2 bus, C-PHY physical layer
|
|
* @V4L2_FWNODE_BUS_TYPE_CSI1: MIPI CSI-1 bus
|
|
* @V4L2_FWNODE_BUS_TYPE_CCP2: SMIA Compact Camera Port 2 bus
|
|
* @V4L2_FWNODE_BUS_TYPE_CSI2_DPHY: MIPI CSI-2 bus, D-PHY physical layer
|
|
* @V4L2_FWNODE_BUS_TYPE_PARALLEL: Camera Parallel Interface bus
|
|
* @V4L2_FWNODE_BUS_TYPE_BT656: BT.656 video format bus-type
|
|
* @NR_OF_V4L2_FWNODE_BUS_TYPE: Number of bus-types
|
|
*/
|
|
enum v4l2_fwnode_bus_type {
|
|
V4L2_FWNODE_BUS_TYPE_GUESS = 0,
|
|
V4L2_FWNODE_BUS_TYPE_CSI2_CPHY,
|
|
V4L2_FWNODE_BUS_TYPE_CSI1,
|
|
V4L2_FWNODE_BUS_TYPE_CCP2,
|
|
V4L2_FWNODE_BUS_TYPE_CSI2_DPHY,
|
|
V4L2_FWNODE_BUS_TYPE_PARALLEL,
|
|
V4L2_FWNODE_BUS_TYPE_BT656,
|
|
NR_OF_V4L2_FWNODE_BUS_TYPE
|
|
};
|
|
|
|
/**
|
|
* v4l2_fwnode_endpoint_parse() - parse all fwnode node properties
|
|
* @fwnode: pointer to the endpoint's fwnode handle
|
|
* @vep: pointer to the V4L2 fwnode data structure
|
|
*
|
|
* This function parses the V4L2 fwnode endpoint specific parameters from the
|
|
* firmware. There are two ways to use this function, either by letting it
|
|
* obtain the type of the bus (by setting the @vep.bus_type field to
|
|
* V4L2_MBUS_UNKNOWN) or specifying the bus type explicitly to one of the &enum
|
|
* v4l2_mbus_type types.
|
|
*
|
|
* When @vep.bus_type is V4L2_MBUS_UNKNOWN, the function will use the "bus-type"
|
|
* property to determine the type when it is available. The caller is
|
|
* responsible for validating the contents of @vep.bus_type field after the call
|
|
* returns.
|
|
*
|
|
* As a deprecated functionality to support older DT bindings without "bus-type"
|
|
* property for devices that support multiple types, if the "bus-type" property
|
|
* does not exist, the function will attempt to guess the type based on the
|
|
* endpoint properties available. NEVER RELY ON GUESSING THE BUS TYPE IN NEW
|
|
* DRIVERS OR BINDINGS.
|
|
*
|
|
* It is also possible to set @vep.bus_type corresponding to an actual bus. In
|
|
* this case the function will only attempt to parse properties related to this
|
|
* bus, and it will return an error if the value of the "bus-type" property
|
|
* corresponds to a different bus.
|
|
*
|
|
* The caller is required to initialise all fields of @vep, either with
|
|
* explicitly values, or by zeroing them.
|
|
*
|
|
* The function does not change the V4L2 fwnode endpoint state if it fails.
|
|
*
|
|
* NOTE: This function does not parse "link-frequencies" property as its size is
|
|
* not known in advance. Please use v4l2_fwnode_endpoint_alloc_parse() if you
|
|
* need properties of variable size.
|
|
*
|
|
* Return: %0 on success or a negative error code on failure:
|
|
* %-ENOMEM on memory allocation failure
|
|
* %-EINVAL on parsing failure
|
|
* %-ENXIO on mismatching bus types
|
|
*/
|
|
int v4l2_fwnode_endpoint_parse(struct fwnode_handle *fwnode,
|
|
struct v4l2_fwnode_endpoint *vep);
|
|
|
|
/**
|
|
* v4l2_fwnode_endpoint_free() - free the V4L2 fwnode acquired by
|
|
* v4l2_fwnode_endpoint_alloc_parse()
|
|
* @vep: the V4L2 fwnode the resources of which are to be released
|
|
*
|
|
* It is safe to call this function with NULL argument or on a V4L2 fwnode the
|
|
* parsing of which failed.
|
|
*/
|
|
void v4l2_fwnode_endpoint_free(struct v4l2_fwnode_endpoint *vep);
|
|
|
|
/**
|
|
* v4l2_fwnode_endpoint_alloc_parse() - parse all fwnode node properties
|
|
* @fwnode: pointer to the endpoint's fwnode handle
|
|
* @vep: pointer to the V4L2 fwnode data structure
|
|
*
|
|
* This function parses the V4L2 fwnode endpoint specific parameters from the
|
|
* firmware. There are two ways to use this function, either by letting it
|
|
* obtain the type of the bus (by setting the @vep.bus_type field to
|
|
* V4L2_MBUS_UNKNOWN) or specifying the bus type explicitly to one of the &enum
|
|
* v4l2_mbus_type types.
|
|
*
|
|
* When @vep.bus_type is V4L2_MBUS_UNKNOWN, the function will use the "bus-type"
|
|
* property to determine the type when it is available. The caller is
|
|
* responsible for validating the contents of @vep.bus_type field after the call
|
|
* returns.
|
|
*
|
|
* As a deprecated functionality to support older DT bindings without "bus-type"
|
|
* property for devices that support multiple types, if the "bus-type" property
|
|
* does not exist, the function will attempt to guess the type based on the
|
|
* endpoint properties available. NEVER RELY ON GUESSING THE BUS TYPE IN NEW
|
|
* DRIVERS OR BINDINGS.
|
|
*
|
|
* It is also possible to set @vep.bus_type corresponding to an actual bus. In
|
|
* this case the function will only attempt to parse properties related to this
|
|
* bus, and it will return an error if the value of the "bus-type" property
|
|
* corresponds to a different bus.
|
|
*
|
|
* The caller is required to initialise all fields of @vep, either with
|
|
* explicitly values, or by zeroing them.
|
|
*
|
|
* The function does not change the V4L2 fwnode endpoint state if it fails.
|
|
*
|
|
* v4l2_fwnode_endpoint_alloc_parse() has two important differences to
|
|
* v4l2_fwnode_endpoint_parse():
|
|
*
|
|
* 1. It also parses variable size data.
|
|
*
|
|
* 2. The memory it has allocated to store the variable size data must be freed
|
|
* using v4l2_fwnode_endpoint_free() when no longer needed.
|
|
*
|
|
* Return: %0 on success or a negative error code on failure:
|
|
* %-ENOMEM on memory allocation failure
|
|
* %-EINVAL on parsing failure
|
|
* %-ENXIO on mismatching bus types
|
|
*/
|
|
int v4l2_fwnode_endpoint_alloc_parse(struct fwnode_handle *fwnode,
|
|
struct v4l2_fwnode_endpoint *vep);
|
|
|
|
/**
|
|
* v4l2_fwnode_parse_link() - parse a link between two endpoints
|
|
* @fwnode: pointer to the endpoint's fwnode at the local end of the link
|
|
* @link: pointer to the V4L2 fwnode link data structure
|
|
*
|
|
* Fill the link structure with the local and remote nodes and port numbers.
|
|
* The local_node and remote_node fields are set to point to the local and
|
|
* remote port's parent nodes respectively (the port parent node being the
|
|
* parent node of the port node if that node isn't a 'ports' node, or the
|
|
* grand-parent node of the port node otherwise).
|
|
*
|
|
* A reference is taken to both the local and remote nodes, the caller must use
|
|
* v4l2_fwnode_put_link() to drop the references when done with the
|
|
* link.
|
|
*
|
|
* Return: 0 on success, or -ENOLINK if the remote endpoint fwnode can't be
|
|
* found.
|
|
*/
|
|
int v4l2_fwnode_parse_link(struct fwnode_handle *fwnode,
|
|
struct v4l2_fwnode_link *link);
|
|
|
|
/**
|
|
* v4l2_fwnode_put_link() - drop references to nodes in a link
|
|
* @link: pointer to the V4L2 fwnode link data structure
|
|
*
|
|
* Drop references to the local and remote nodes in the link. This function
|
|
* must be called on every link parsed with v4l2_fwnode_parse_link().
|
|
*/
|
|
void v4l2_fwnode_put_link(struct v4l2_fwnode_link *link);
|
|
|
|
/**
|
|
* v4l2_fwnode_connector_free() - free the V4L2 connector acquired memory
|
|
* @connector: the V4L2 connector resources of which are to be released
|
|
*
|
|
* Free all allocated memory and put all links acquired by
|
|
* v4l2_fwnode_connector_parse() and v4l2_fwnode_connector_add_link().
|
|
*
|
|
* It is safe to call this function with NULL argument or on a V4L2 connector
|
|
* the parsing of which failed.
|
|
*/
|
|
void v4l2_fwnode_connector_free(struct v4l2_fwnode_connector *connector);
|
|
|
|
/**
|
|
* v4l2_fwnode_connector_parse() - initialize the 'struct v4l2_fwnode_connector'
|
|
* @fwnode: pointer to the subdev endpoint's fwnode handle where the connector
|
|
* is connected to or to the connector endpoint fwnode handle.
|
|
* @connector: pointer to the V4L2 fwnode connector data structure
|
|
*
|
|
* Fill the &struct v4l2_fwnode_connector with the connector type, label and
|
|
* all &enum v4l2_connector_type specific connector data. The label is optional
|
|
* so it is set to %NULL if no one was found. The function initialize the links
|
|
* to zero. Adding links to the connector is done by calling
|
|
* v4l2_fwnode_connector_add_link().
|
|
*
|
|
* The memory allocated for the label must be freed when no longer needed.
|
|
* Freeing the memory is done by v4l2_fwnode_connector_free().
|
|
*
|
|
* Return:
|
|
* * %0 on success or a negative error code on failure:
|
|
* * %-EINVAL if @fwnode is invalid
|
|
* * %-ENOTCONN if connector type is unknown or connector device can't be found
|
|
*/
|
|
int v4l2_fwnode_connector_parse(struct fwnode_handle *fwnode,
|
|
struct v4l2_fwnode_connector *connector);
|
|
|
|
/**
|
|
* v4l2_fwnode_connector_add_link - add a link between a connector node and
|
|
* a v4l2-subdev node.
|
|
* @fwnode: pointer to the subdev endpoint's fwnode handle where the connector
|
|
* is connected to
|
|
* @connector: pointer to the V4L2 fwnode connector data structure
|
|
*
|
|
* Add a new &struct v4l2_connector_link link to the
|
|
* &struct v4l2_fwnode_connector connector links list. The link local_node
|
|
* points to the connector node, the remote_node to the host v4l2 (sub)dev.
|
|
*
|
|
* The taken references to remote_node and local_node must be dropped and the
|
|
* allocated memory must be freed when no longer needed. Both is done by calling
|
|
* v4l2_fwnode_connector_free().
|
|
*
|
|
* Return:
|
|
* * %0 on success or a negative error code on failure:
|
|
* * %-EINVAL if @fwnode or @connector is invalid or @connector type is unknown
|
|
* * %-ENOMEM on link memory allocation failure
|
|
* * %-ENOTCONN if remote connector device can't be found
|
|
* * %-ENOLINK if link parsing between v4l2 (sub)dev and connector fails
|
|
*/
|
|
int v4l2_fwnode_connector_add_link(struct fwnode_handle *fwnode,
|
|
struct v4l2_fwnode_connector *connector);
|
|
|
|
/**
|
|
* v4l2_fwnode_device_parse() - parse fwnode device properties
|
|
* @dev: pointer to &struct device
|
|
* @props: pointer to &struct v4l2_fwnode_device_properties where to store the
|
|
* parsed properties values
|
|
*
|
|
* This function parses and validates the V4L2 fwnode device properties from the
|
|
* firmware interface, and fills the @struct v4l2_fwnode_device_properties
|
|
* provided by the caller.
|
|
*
|
|
* Return:
|
|
* % 0 on success
|
|
* %-EINVAL if a parsed property value is not valid
|
|
*/
|
|
int v4l2_fwnode_device_parse(struct device *dev,
|
|
struct v4l2_fwnode_device_properties *props);
|
|
|
|
/**
|
|
* typedef parse_endpoint_func - Driver's callback function to be called on
|
|
* each V4L2 fwnode endpoint.
|
|
*
|
|
* @dev: pointer to &struct device
|
|
* @vep: pointer to &struct v4l2_fwnode_endpoint
|
|
* @asd: pointer to &struct v4l2_async_subdev
|
|
*
|
|
* Return:
|
|
* * %0 on success
|
|
* * %-ENOTCONN if the endpoint is to be skipped but this
|
|
* should not be considered as an error
|
|
* * %-EINVAL if the endpoint configuration is invalid
|
|
*/
|
|
typedef int (*parse_endpoint_func)(struct device *dev,
|
|
struct v4l2_fwnode_endpoint *vep,
|
|
struct v4l2_async_subdev *asd);
|
|
|
|
/**
|
|
* v4l2_async_notifier_parse_fwnode_endpoints - Parse V4L2 fwnode endpoints in a
|
|
* device node
|
|
* @dev: the device the endpoints of which are to be parsed
|
|
* @notifier: notifier for @dev
|
|
* @asd_struct_size: size of the driver's async sub-device struct, including
|
|
* sizeof(struct v4l2_async_subdev). The &struct
|
|
* v4l2_async_subdev shall be the first member of
|
|
* the driver's async sub-device struct, i.e. both
|
|
* begin at the same memory address.
|
|
* @parse_endpoint: Driver's callback function called on each V4L2 fwnode
|
|
* endpoint. Optional.
|
|
*
|
|
* DEPRECATED! This function is deprecated. Don't use it in new drivers.
|
|
* Instead see an example in cio2_parse_firmware() function in
|
|
* drivers/media/pci/intel/ipu3/ipu3-cio2.c .
|
|
*
|
|
* Parse the fwnode endpoints of the @dev device and populate the async sub-
|
|
* devices list in the notifier. The @parse_endpoint callback function is
|
|
* called for each endpoint with the corresponding async sub-device pointer to
|
|
* let the caller initialize the driver-specific part of the async sub-device
|
|
* structure.
|
|
*
|
|
* The notifier memory shall be zeroed before this function is called on the
|
|
* notifier.
|
|
*
|
|
* This function may not be called on a registered notifier and may be called on
|
|
* a notifier only once.
|
|
*
|
|
* The &struct v4l2_fwnode_endpoint passed to the callback function
|
|
* @parse_endpoint is released once the function is finished. If there is a need
|
|
* to retain that configuration, the user needs to allocate memory for it.
|
|
*
|
|
* Any notifier populated using this function must be released with a call to
|
|
* v4l2_async_notifier_cleanup() after it has been unregistered and the async
|
|
* sub-devices are no longer in use, even if the function returned an error.
|
|
*
|
|
* Return: %0 on success, including when no async sub-devices are found
|
|
* %-ENOMEM if memory allocation failed
|
|
* %-EINVAL if graph or endpoint parsing failed
|
|
* Other error codes as returned by @parse_endpoint
|
|
*/
|
|
int
|
|
v4l2_async_notifier_parse_fwnode_endpoints(struct device *dev,
|
|
struct v4l2_async_notifier *notifier,
|
|
size_t asd_struct_size,
|
|
parse_endpoint_func parse_endpoint);
|
|
|
|
/* Helper macros to access the connector links. */
|
|
|
|
/** v4l2_connector_last_link - Helper macro to get the first
|
|
* &struct v4l2_fwnode_connector link
|
|
* @v4l2c: &struct v4l2_fwnode_connector owning the connector links
|
|
*
|
|
* This marco returns the first added &struct v4l2_connector_link connector
|
|
* link or @NULL if the connector has no links.
|
|
*/
|
|
#define v4l2_connector_first_link(v4l2c) \
|
|
list_first_entry_or_null(&(v4l2c)->links, \
|
|
struct v4l2_connector_link, head)
|
|
|
|
/** v4l2_connector_last_link - Helper macro to get the last
|
|
* &struct v4l2_fwnode_connector link
|
|
* @v4l2c: &struct v4l2_fwnode_connector owning the connector links
|
|
*
|
|
* This marco returns the last &struct v4l2_connector_link added connector link.
|
|
*/
|
|
#define v4l2_connector_last_link(v4l2c) \
|
|
list_last_entry(&(v4l2c)->links, struct v4l2_connector_link, head)
|
|
|
|
#endif /* _V4L2_FWNODE_H */
|