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// SPDX-License-Identifier: GPL-2.0+
/*
* mdio-boardinfo - Collect pre-declarations for MDIO devices
*/
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/phy.h>
#include <linux/slab.h>
#include "mdio-boardinfo.h"
static LIST_HEAD(mdio_board_list);
static DEFINE_MUTEX(mdio_board_lock);
struct mdio_board_entry {
struct list_head list;
struct mdio_board_info board_info;
};
/**
* mdiobus_setup_mdiodev_from_board_info - create and setup MDIO devices
* from pre-collected board specific MDIO information
* @bus: Bus the board_info belongs to
* @cb: Callback to create device on bus
* Context: can sleep
*/
void mdiobus_setup_mdiodev_from_board_info(struct mii_bus *bus,
int (*cb)
(struct mii_bus *bus,
struct mdio_board_info *bi))
{
struct mdio_board_entry *be, *tmp;
mutex_lock(&mdio_board_lock);
list_for_each_entry_safe(be, tmp, &mdio_board_list, list) {
struct mdio_board_info *bi = &be->board_info;
if (strcmp(bus->id, bi->bus_id))
continue;
mutex_unlock(&mdio_board_lock);
cb(bus, bi);
mutex_lock(&mdio_board_lock);
}
mutex_unlock(&mdio_board_lock);
}
EXPORT_SYMBOL(mdiobus_setup_mdiodev_from_board_info);
/**
* mdiobus_register_board_info - register MDIO devices for a given board
* @info: array of devices descriptors
* @n: number of descriptors provided
* Context: can sleep
*
* The board info passed can be marked with __initdata but be pointers
* such as platform_data etc. are copied as-is
*/
int mdiobus_register_board_info(const struct mdio_board_info *info,
unsigned int n)
{
struct mdio_board_entry *be;
be = kcalloc(n, sizeof(*be), GFP_KERNEL);
if (!be)
return -ENOMEM;
for (int i = 0; i < n; i++, be++) {
be->board_info = info[i];
mutex_lock(&mdio_board_lock);
list_add_tail(&be->list, &mdio_board_list);
mutex_unlock(&mdio_board_lock);
}
return 0;
}
EXPORT_SYMBOL(mdiobus_register_board_info);
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