diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/of/Makefile | 1 | ||||
| -rw-r--r-- | drivers/of/of_net.c | 145 |
3 files changed, 0 insertions, 150 deletions
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index 3dfeae8912df..80b5fd44ab1c 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -70,10 +70,6 @@ config OF_IRQ def_bool y depends on !SPARC && IRQ_DOMAIN -config OF_NET - depends on NETDEVICES - def_bool y - config OF_RESERVED_MEM def_bool OF_EARLY_FLATTREE diff --git a/drivers/of/Makefile b/drivers/of/Makefile index c13b982084a3..e0360a44306e 100644 --- a/drivers/of/Makefile +++ b/drivers/of/Makefile @@ -7,7 +7,6 @@ obj-$(CONFIG_OF_EARLY_FLATTREE) += fdt_address.o obj-$(CONFIG_OF_PROMTREE) += pdt.o obj-$(CONFIG_OF_ADDRESS) += address.o obj-$(CONFIG_OF_IRQ) += irq.o -obj-$(CONFIG_OF_NET) += of_net.o obj-$(CONFIG_OF_UNITTEST) += unittest.o obj-$(CONFIG_OF_RESERVED_MEM) += of_reserved_mem.o obj-$(CONFIG_OF_RESOLVE) += resolver.o diff --git a/drivers/of/of_net.c b/drivers/of/of_net.c deleted file mode 100644 index dbac3a172a11..000000000000 --- a/drivers/of/of_net.c +++ /dev/null @@ -1,145 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * OF helpers for network devices. - * - * Initially copied out of arch/powerpc/kernel/prom_parse.c - */ -#include <linux/etherdevice.h> -#include <linux/kernel.h> -#include <linux/of_net.h> -#include <linux/of_platform.h> -#include <linux/phy.h> -#include <linux/export.h> -#include <linux/device.h> -#include <linux/nvmem-consumer.h> - -/** - * of_get_phy_mode - Get phy mode for given device_node - * @np: Pointer to the given device_node - * @interface: Pointer to the result - * - * The function gets phy interface string from property 'phy-mode' or - * 'phy-connection-type'. The index in phy_modes table is set in - * interface and 0 returned. In case of error interface is set to - * PHY_INTERFACE_MODE_NA and an errno is returned, e.g. -ENODEV. - */ -int of_get_phy_mode(struct device_node *np, phy_interface_t *interface) -{ - const char *pm; - int err, i; - - *interface = PHY_INTERFACE_MODE_NA; - - err = of_property_read_string(np, "phy-mode", &pm); - if (err < 0) - err = of_property_read_string(np, "phy-connection-type", &pm); - if (err < 0) - return err; - - for (i = 0; i < PHY_INTERFACE_MODE_MAX; i++) - if (!strcasecmp(pm, phy_modes(i))) { - *interface = i; - return 0; - } - - return -ENODEV; -} -EXPORT_SYMBOL_GPL(of_get_phy_mode); - -static int of_get_mac_addr(struct device_node *np, const char *name, u8 *addr) -{ - struct property *pp = of_find_property(np, name, NULL); - - if (pp && pp->length == ETH_ALEN && is_valid_ether_addr(pp->value)) { - memcpy(addr, pp->value, ETH_ALEN); - return 0; - } - return -ENODEV; -} - -static int of_get_mac_addr_nvmem(struct device_node *np, u8 *addr) -{ - struct platform_device *pdev = of_find_device_by_node(np); - struct nvmem_cell *cell; - const void *mac; - size_t len; - int ret; - - /* Try lookup by device first, there might be a nvmem_cell_lookup - * associated with a given device. - */ - if (pdev) { - ret = nvmem_get_mac_address(&pdev->dev, addr); - put_device(&pdev->dev); - return ret; - } - - cell = of_nvmem_cell_get(np, "mac-address"); - if (IS_ERR(cell)) - return PTR_ERR(cell); - - mac = nvmem_cell_read(cell, &len); - nvmem_cell_put(cell); - - if (IS_ERR(mac)) - return PTR_ERR(mac); - - if (len != ETH_ALEN || !is_valid_ether_addr(mac)) { - kfree(mac); - return -EINVAL; - } - - memcpy(addr, mac, ETH_ALEN); - kfree(mac); - - return 0; -} - -/** - * of_get_mac_address() - * @np: Caller's Device Node - * @addr: Pointer to a six-byte array for the result - * - * Search the device tree for the best MAC address to use. 'mac-address' is - * checked first, because that is supposed to contain to "most recent" MAC - * address. If that isn't set, then 'local-mac-address' is checked next, - * because that is the default address. If that isn't set, then the obsolete - * 'address' is checked, just in case we're using an old device tree. If any - * of the above isn't set, then try to get MAC address from nvmem cell named - * 'mac-address'. - * - * Note that the 'address' property is supposed to contain a virtual address of - * the register set, but some DTS files have redefined that property to be the - * MAC address. - * - * All-zero MAC addresses are rejected, because those could be properties that - * exist in the device tree, but were not set by U-Boot. For example, the - * DTS could define 'mac-address' and 'local-mac-address', with zero MAC - * addresses. Some older U-Boots only initialized 'local-mac-address'. In - * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists - * but is all zeros. - * - * Return: 0 on success and errno in case of error. -*/ -int of_get_mac_address(struct device_node *np, u8 *addr) -{ - int ret; - - if (!np) - return -ENODEV; - - ret = of_get_mac_addr(np, "mac-address", addr); - if (!ret) - return 0; - - ret = of_get_mac_addr(np, "local-mac-address", addr); - if (!ret) - return 0; - - ret = of_get_mac_addr(np, "address", addr); - if (!ret) - return 0; - - return of_get_mac_addr_nvmem(np, addr); -} -EXPORT_SYMBOL(of_get_mac_address); |