projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| a2443fd1 | 1 | // SPDX-License-Identifier: GPL-2.0+ |
| 648ea013 FF |
2 | /* |
| 3 | * mdio-boardinfo - Collect pre-declarations for MDIO devices | |
| 648ea013 FF |
4 | */ |
| 5 | ||
| 6 | #include <linux/kernel.h> | |
| 7 | #include <linux/slab.h> | |
| 8 | #include <linux/export.h> | |
| 9 | #include <linux/mutex.h> | |
| 10 | #include <linux/list.h> | |
| 11 | ||
| 12 | #include "mdio-boardinfo.h" | |
| 13 | ||
| 14 | static LIST_HEAD(mdio_board_list); | |
| 15 | static DEFINE_MUTEX(mdio_board_lock); | |
| 16 | ||
| 17 | /** | |
| 18 | * mdiobus_setup_mdiodev_from_board_info - create and setup MDIO devices | |
| 19 | * from pre-collected board specific MDIO information | |
| 19c5a5fe AL |
20 | * @bus: Bus the board_info belongs to |
| 21 | * @cb: Callback to create device on bus | |
| 648ea013 FF |
22 | * Context: can sleep |
| 23 | */ | |
| d0281a56 FF |
24 | void mdiobus_setup_mdiodev_from_board_info(struct mii_bus *bus, |
| 25 | int (*cb) | |
| 26 | (struct mii_bus *bus, | |
| 27 | struct mdio_board_info *bi)) | |
| 648ea013 FF |
28 | { |
| 29 | struct mdio_board_entry *be; | |
| 0263ea5c | 30 | struct mdio_board_entry *tmp; |
| 648ea013 FF |
31 | struct mdio_board_info *bi; |
| 32 | int ret; | |
| 33 | ||
| 34 | mutex_lock(&mdio_board_lock); | |
| 0263ea5c | 35 | list_for_each_entry_safe(be, tmp, &mdio_board_list, list) { |
| 648ea013 FF |
36 | bi = &be->board_info; |
| 37 | ||
| 38 | if (strcmp(bus->id, bi->bus_id)) | |
| 39 | continue; | |
| 40 | ||
| 0263ea5c | 41 | mutex_unlock(&mdio_board_lock); |
| d0281a56 | 42 | ret = cb(bus, bi); |
| 0263ea5c | 43 | mutex_lock(&mdio_board_lock); |
| d0281a56 | 44 | if (ret) |
| 648ea013 FF |
45 | continue; |
| 46 | ||
| 648ea013 FF |
47 | } |
| 48 | mutex_unlock(&mdio_board_lock); | |
| 49 | } | |
| d0281a56 | 50 | EXPORT_SYMBOL(mdiobus_setup_mdiodev_from_board_info); |
| 648ea013 FF |
51 | |
| 52 | /** | |
| 4db0964a | 53 | * mdiobus_register_board_info - register MDIO devices for a given board |
| 648ea013 FF |
54 | * @info: array of devices descriptors |
| 55 | * @n: number of descriptors provided | |
| 56 | * Context: can sleep | |
| 57 | * | |
| 58 | * The board info passed can be marked with __initdata but be pointers | |
| 59 | * such as platform_data etc. are copied as-is | |
| 60 | */ | |
| 61 | int mdiobus_register_board_info(const struct mdio_board_info *info, | |
| 62 | unsigned int n) | |
| 63 | { | |
| 64 | struct mdio_board_entry *be; | |
| 65 | unsigned int i; | |
| 66 | ||
| 67 | be = kcalloc(n, sizeof(*be), GFP_KERNEL); | |
| 68 | if (!be) | |
| 69 | return -ENOMEM; | |
| 70 | ||
| 71 | for (i = 0; i < n; i++, be++, info++) { | |
| 72 | memcpy(&be->board_info, info, sizeof(*info)); | |
| 73 | mutex_lock(&mdio_board_lock); | |
| 74 | list_add_tail(&be->list, &mdio_board_list); | |
| 75 | mutex_unlock(&mdio_board_lock); | |
| 76 | } | |
| 77 | ||
| 78 | return 0; | |
| 79 | } | |
| 90eff909 | 80 | EXPORT_SYMBOL(mdiobus_register_board_info); |