diff options
Diffstat (limited to 'drivers/of/of_net.c')
| -rw-r--r-- | drivers/of/of_net.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/of/of_net.c b/drivers/of/of_net.c index 86f334a2769..73e14184aaf 100644 --- a/drivers/of/of_net.c +++ b/drivers/of/of_net.c @@ -8,6 +8,35 @@ #include <linux/etherdevice.h> #include <linux/kernel.h> #include <linux/of_net.h> +#include <linux/phy.h> +#include <linux/export.h> + +/** + * of_get_phy_mode - Get phy mode for given device_node + * @np: Pointer to the given device_node + * + * The function gets phy interface string from property 'phy-mode' or + * 'phy-connection-type', and return its index in phy_modes table, or errno in + * error case. + */ +int of_get_phy_mode(struct device_node *np) +{ + const char *pm; + int err, i; + + 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))) + return i; + + return -ENODEV; +} +EXPORT_SYMBOL_GPL(of_get_phy_mode); /** * Search the device tree for the best MAC address to use. 'mac-address' is |