87ea592624
All the users of that API have now been converted to use software fwnodes instead. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Link: https://lore.kernel.org/r/20200904125123.83725-3-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/**
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* Device connections
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*
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* Copyright (C) 2018 Intel Corporation
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* Author: Heikki Krogerus <heikki.krogerus@linux.intel.com>
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*/
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#include <linux/device.h>
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#include <linux/property.h>
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static void *
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fwnode_graph_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
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void *data, devcon_match_fn_t match)
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{
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struct device_connection con = { .id = con_id };
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struct fwnode_handle *ep;
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void *ret;
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fwnode_graph_for_each_endpoint(fwnode, ep) {
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con.fwnode = fwnode_graph_get_remote_port_parent(ep);
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if (!fwnode_device_is_available(con.fwnode))
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continue;
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ret = match(&con, -1, data);
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fwnode_handle_put(con.fwnode);
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if (ret) {
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fwnode_handle_put(ep);
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return ret;
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}
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}
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return NULL;
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}
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static void *
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fwnode_devcon_match(struct fwnode_handle *fwnode, const char *con_id,
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void *data, devcon_match_fn_t match)
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{
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struct device_connection con = { };
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void *ret;
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int i;
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for (i = 0; ; i++) {
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con.fwnode = fwnode_find_reference(fwnode, con_id, i);
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if (IS_ERR(con.fwnode))
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break;
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ret = match(&con, -1, data);
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fwnode_handle_put(con.fwnode);
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if (ret)
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return ret;
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}
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return NULL;
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}
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/**
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* fwnode_connection_find_match - Find connection from a device node
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* @fwnode: Device node with the connection
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* @con_id: Identifier for the connection
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* @data: Data for the match function
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* @match: Function to check and convert the connection description
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*
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* Find a connection with unique identifier @con_id between @fwnode and another
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* device node. @match will be used to convert the connection description to
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* data the caller is expecting to be returned.
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*/
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void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
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const char *con_id, void *data,
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devcon_match_fn_t match)
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{
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void *ret;
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if (!fwnode || !match)
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return NULL;
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ret = fwnode_graph_devcon_match(fwnode, con_id, data, match);
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if (ret)
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return ret;
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return fwnode_devcon_match(fwnode, con_id, data, match);
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}
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EXPORT_SYMBOL_GPL(fwnode_connection_find_match);
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/**
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* device_connection_find_match - Find physical connection to a device
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* @dev: Device with the connection
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* @con_id: Identifier for the connection
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* @data: Data for the match function
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* @match: Function to check and convert the connection description
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*
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* Find a connection with unique identifier @con_id between @dev and another
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* device. @match will be used to convert the connection description to data the
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* caller is expecting to be returned.
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*/
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void *device_connection_find_match(struct device *dev, const char *con_id,
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void *data, devcon_match_fn_t match)
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{
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return fwnode_connection_find_match(dev_fwnode(dev), con_id, data, match);
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}
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EXPORT_SYMBOL_GPL(device_connection_find_match);
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