Revision ef82bdc57a204bf452da9f7c273c21462f17344e authored by Linus Torvalds on 26 September 2011, 20:35:43 UTC, committed by Linus Torvalds on 26 September 2011, 20:35:43 UTC
* 'hwmon-for-linus' of git://github.com/groeck/linux: hwmon: (coretemp) remove struct platform_data * parameter from create_core_data() hwmon: (coretemp) constify static data hwmon: (coretemp) don't use kernel assigned CPU number as platform device ID hwmon: (ds620) Fix handling of negative temperatures hwmon: (w83791d) rename prototype parameter from 'register' to 'reg' hwmon: (coretemp) Don't use threshold registers for tempX_max hwmon: (coretemp) Let the user force TjMax hwmon: (coretemp) Drop duplicate function get_pkg_tjmax
of_net.c
/*
* OF helpers for network devices.
*
* This file is released under the GPLv2
*
* 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/phy.h>
/**
* It maps 'enum phy_interface_t' found in include/linux/phy.h
* into the device tree binding of 'phy-mode', so that Ethernet
* device driver can get phy interface from device tree.
*/
static const char *phy_modes[] = {
[PHY_INTERFACE_MODE_NA] = "",
[PHY_INTERFACE_MODE_MII] = "mii",
[PHY_INTERFACE_MODE_GMII] = "gmii",
[PHY_INTERFACE_MODE_SGMII] = "sgmii",
[PHY_INTERFACE_MODE_TBI] = "tbi",
[PHY_INTERFACE_MODE_RMII] = "rmii",
[PHY_INTERFACE_MODE_RGMII] = "rgmii",
[PHY_INTERFACE_MODE_RGMII_ID] = "rgmii-id",
[PHY_INTERFACE_MODE_RGMII_RXID] = "rgmii-rxid",
[PHY_INTERFACE_MODE_RGMII_TXID] = "rgmii-txid",
[PHY_INTERFACE_MODE_RTBI] = "rtbi",
[PHY_INTERFACE_MODE_SMII] = "smii",
};
/**
* 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',
* and return its index in phy_modes table, or errno in error case.
*/
const 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)
return err;
for (i = 0; i < ARRAY_SIZE(phy_modes); 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
* 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.
*
* 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.
*/
const void *of_get_mac_address(struct device_node *np)
{
struct property *pp;
pp = of_find_property(np, "mac-address", NULL);
if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
return pp->value;
pp = of_find_property(np, "local-mac-address", NULL);
if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
return pp->value;
pp = of_find_property(np, "address", NULL);
if (pp && (pp->length == 6) && is_valid_ether_addr(pp->value))
return pp->value;
return NULL;
}
EXPORT_SYMBOL(of_get_mac_address);
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