From 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 13 May 2024 10:30:14 +0000
Subject: [PATCH] modify sin led gpio
---
kernel/include/media/v4l2-fwnode.h | 306 ++++++++++++++++++++++++++++++++++++++++++--------
1 files changed, 255 insertions(+), 51 deletions(-)
diff --git a/kernel/include/media/v4l2-fwnode.h b/kernel/include/media/v4l2-fwnode.h
index 9cccab6..ed0840f 100644
--- a/kernel/include/media/v4l2-fwnode.h
+++ b/kernel/include/media/v4l2-fwnode.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
/*
* V4L2 fwnode binding parsing library
*
@@ -9,10 +10,6 @@
*
* Copyright (C) 2012 Renesas Electronics Corp.
* Author: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
*/
#ifndef _V4L2_FWNODE_H
#define _V4L2_FWNODE_H
@@ -43,7 +40,7 @@
unsigned int flags;
unsigned char data_lanes[V4L2_FWNODE_CSI2_MAX_DATA_LANES];
unsigned char clock_lane;
- unsigned short num_data_lanes;
+ unsigned char num_data_lanes;
bool lane_polarities[1 + V4L2_FWNODE_CSI2_MAX_DATA_LANES];
};
@@ -70,8 +67,8 @@
* @clock_lane: the number of the clock lane
*/
struct v4l2_fwnode_bus_mipi_csi1 {
- bool clock_inv;
- bool strobe;
+ unsigned char clock_inv:1;
+ unsigned char strobe:1;
bool lane_polarity[2];
unsigned char data_lane;
unsigned char clock_lane;
@@ -81,7 +78,7 @@
* struct v4l2_fwnode_endpoint - the endpoint data structure
* @base: fwnode endpoint of the v4l2_fwnode
* @bus_type: bus type
- * @bus: union with bus configuration data structure
+ * @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.
@@ -102,7 +99,7 @@
* v4l2_fwnode_endpoint_parse()
*/
enum v4l2_mbus_type bus_type;
- union {
+ struct {
struct v4l2_fwnode_bus_parallel parallel;
struct v4l2_fwnode_bus_mipi_csi1 mipi_csi1;
struct v4l2_fwnode_bus_mipi_csi2 mipi_csi2;
@@ -112,17 +109,108 @@
};
/**
+ * 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;
};
/**
@@ -130,19 +218,32 @@
* @fwnode: pointer to the endpoint's fwnode handle
* @vep: pointer to the V4L2 fwnode data structure
*
- * All properties are optional. If none are found, we don't set any flags. This
- * means the port has a static configuration and no properties have to be
- * specified explicitly. If any properties that identify the bus as parallel
- * are found and slave-mode isn't set, we set V4L2_MBUS_MASTER. Similarly, if
- * we recognise the bus as serial CSI-2 and clock-noncontinuous isn't set, we
- * set the V4L2_MBUS_CSI2_CONTINUOUS_CLOCK flag. The caller should hold a
- * reference to @fwnode.
+ * This function parses the V4L2 fwnode endpoint specific parameters from the
+ * firmware. The caller is responsible for assigning @vep.bus_type to a valid
+ * media bus type. The caller may also set the default configuration for the
+ * endpoint --- a configuration that shall be in line with the DT binding
+ * documentation. Should a device support multiple bus types, the caller may
+ * call this function once the correct type is found --- with a default
+ * configuration valid for that type.
+ *
+ * It is also allowed to set @vep.bus_type to V4L2_MBUS_UNKNOWN. USING THIS
+ * FEATURE REQUIRES "bus-type" PROPERTY IN DT BINDINGS. For old drivers,
+ * guessing @vep.bus_type between CSI-2 D-PHY, parallel and BT.656 busses is
+ * supported. NEVER RELY ON GUESSING @vep.bus_type IN NEW DRIVERS!
+ *
+ * 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 properties the size of which is variable
* without a low fixed limit. Please use v4l2_fwnode_endpoint_alloc_parse() in
* new drivers instead.
*
- * Return: 0 on success or a negative error code on failure.
+ * 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);
@@ -160,14 +261,25 @@
/**
* 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
*
- * All properties are optional. If none are found, we don't set any flags. This
- * means the port has a static configuration and no properties have to be
- * specified explicitly. If any properties that identify the bus as parallel
- * are found and slave-mode isn't set, we set V4L2_MBUS_MASTER. Similarly, if
- * we recognise the bus as serial CSI-2 and clock-noncontinuous isn't set, we
- * set the V4L2_MBUS_CSI2_CONTINUOUS_CLOCK flag. The caller should hold a
- * reference to @fwnode.
+ * This function parses the V4L2 fwnode endpoint specific parameters from the
+ * firmware. The caller is responsible for assigning @vep.bus_type to a valid
+ * media bus type. The caller may also set the default configuration for the
+ * endpoint --- a configuration that shall be in line with the DT binding
+ * documentation. Should a device support multiple bus types, the caller may
+ * call this function once the correct type is found --- with a default
+ * configuration valid for that type.
+ *
+ * It is also allowed to set @vep.bus_type to V4L2_MBUS_UNKNOWN. USING THIS
+ * FEATURE REQUIRES "bus-type" PROPERTY IN DT BINDINGS. For old drivers,
+ * guessing @vep.bus_type between CSI-2 D-PHY, parallel and BT.656 busses is
+ * supported. NEVER RELY ON GUESSING @vep.bus_type IN NEW DRIVERS!
+ *
+ * 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():
@@ -177,11 +289,13 @@
* 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: Pointer to v4l2_fwnode_endpoint if successful, on an error pointer
- * on error.
+ * 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
*/
-struct v4l2_fwnode_endpoint *v4l2_fwnode_endpoint_alloc_parse(
- struct fwnode_handle *fwnode);
+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
@@ -213,6 +327,82 @@
*/
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
@@ -232,7 +422,6 @@
struct v4l2_fwnode_endpoint *vep,
struct v4l2_async_subdev *asd);
-
/**
* v4l2_async_notifier_parse_fwnode_endpoints - Parse V4L2 fwnode endpoints in a
* device node
@@ -247,7 +436,7 @@
* endpoint. Optional.
*
* Parse the fwnode endpoints of the @dev device and populate the async sub-
- * devices array of the notifier. The @parse_endpoint callback function is
+ * 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.
@@ -257,11 +446,6 @@
*
* This function may not be called on a registered notifier and may be called on
* a notifier only once.
- *
- * Do not change the notifier's subdevs array, take references to the subdevs
- * array itself or change the notifier's num_subdevs field. This is because this
- * function allocates and reallocates the subdevs array based on parsing
- * endpoints.
*
* The &struct v4l2_fwnode_endpoint passed to the callback function
* @parse_endpoint is released once the function is finished. If there is a need
@@ -276,10 +460,11 @@
* %-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);
+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);
/**
* v4l2_async_notifier_parse_fwnode_endpoints_by_port - Parse V4L2 fwnode
@@ -303,7 +488,7 @@
* devices). In this case the driver must know which ports to parse.
*
* Parse the fwnode endpoints of the @dev device on a given @port and populate
- * the async sub-devices array of the notifier. The @parse_endpoint callback
+ * the async sub-devices list of 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.
@@ -313,11 +498,6 @@
*
* This function may not be called on a registered notifier and may be called on
* a notifier only once per port.
- *
- * Do not change the notifier's subdevs array, take references to the subdevs
- * array itself or change the notifier's num_subdevs field. This is because this
- * function allocates and reallocates the subdevs array based on parsing
- * endpoints.
*
* The &struct v4l2_fwnode_endpoint passed to the callback function
* @parse_endpoint is released once the function is finished. If there is a need
@@ -332,10 +512,12 @@
* %-EINVAL if graph or endpoint parsing failed
* Other error codes as returned by @parse_endpoint
*/
-int v4l2_async_notifier_parse_fwnode_endpoints_by_port(
- struct device *dev, struct v4l2_async_notifier *notifier,
- size_t asd_struct_size, unsigned int port,
- parse_endpoint_func parse_endpoint);
+int
+v4l2_async_notifier_parse_fwnode_endpoints_by_port(struct device *dev,
+ struct v4l2_async_notifier *notifier,
+ size_t asd_struct_size,
+ unsigned int port,
+ parse_endpoint_func parse_endpoint);
/**
* v4l2_fwnode_reference_parse_sensor_common - parse common references on
@@ -355,7 +537,29 @@
* -ENOMEM if memory allocation failed
* -EINVAL if property parsing failed
*/
-int v4l2_async_notifier_parse_fwnode_sensor_common(
- struct device *dev, struct v4l2_async_notifier *notifier);
+int v4l2_async_notifier_parse_fwnode_sensor_common(struct device *dev,
+ struct v4l2_async_notifier *notifier);
+
+/* 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 */
--
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