// SPDX-License-Identifier: GPL-2.0+ /* * mdio-boardinfo - Collect pre-declarations for MDIO devices */ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/export.h> #include <linux/mutex.h> #include <linux/list.h> #include "mdio-boardinfo.h" static LIST_HEAD(mdio_board_list); static DEFINE_MUTEX(mdio_board_lock); /** * 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; struct mdio_board_entry *tmp; struct mdio_board_info *bi; int ret; mutex_lock(&mdio_board_lock); list_for_each_entry_safe(be, tmp, &mdio_board_list, list) { bi = &be->board_info; if (strcmp(bus->id, bi->bus_id)) continue; mutex_unlock(&mdio_board_lock); ret = cb(bus, bi); mutex_lock(&mdio_board_lock); if (ret) continue; } mutex_unlock(&mdio_board_lock); } EXPORT_SYMBOL(mdiobus_setup_mdiodev_from_board_info); /** * mdio_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; unsigned int i; be = kcalloc(n, sizeof(*be), GFP_KERNEL); if (!be) return -ENOMEM; for (i = 0; i < n; i++, be++, info++) { memcpy(&be->board_info, info, sizeof(*info)); 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);