#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/property.h>
+#include <linux/etherdevice.h>
+#include <linux/phy.h>
/**
* device_add_property_set - Add a collection of properties to a device object.
*/
void device_add_property_set(struct device *dev, struct property_set *pset)
{
- if (pset)
- pset->fwnode.type = FWNODE_PDATA;
+ if (!pset)
+ return;
+ pset->fwnode.type = FWNODE_PDATA;
set_secondary_fwnode(dev, &pset->fwnode);
}
EXPORT_SYMBOL_GPL(device_add_property_set);
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected.
+ * %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_u8_array(struct device *dev, const char *propname,
u8 *val, size_t nval)
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected.
+ * %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_u16_array(struct device *dev, const char *propname,
u16 *val, size_t nval)
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected.
+ * %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_u32_array(struct device *dev, const char *propname,
u32 *val, size_t nval)
* %-ENODATA if the property does not have a value,
* %-EPROTO if the property is not an array of numbers,
* %-EOVERFLOW if the size of the property is not as expected.
+ * %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_u64_array(struct device *dev, const char *propname,
u64 *val, size_t nval)
* %-ENODATA if the property does not have a value,
* %-EPROTO or %-EILSEQ if the property is not an array of strings,
* %-EOVERFLOW if the size of the property is not as expected.
+ * %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_string_array(struct device *dev, const char *propname,
const char **val, size_t nval)
* %-EINVAL if given arguments are not valid,
* %-ENODATA if the property does not have a value,
* %-EPROTO or %-EILSEQ if the property type is not a string.
+ * %-ENXIO if no suitable firmware interface is present.
*/
int device_property_read_string(struct device *dev, const char *propname,
const char **val)
else if (is_acpi_node(_fwnode_)) \
_ret_ = acpi_dev_prop_read(to_acpi_node(_fwnode_), _propname_, \
_proptype_, _val_, _nval_); \
- else \
+ else if (is_pset(_fwnode_)) \
_ret_ = pset_prop_read_array(to_pset(_fwnode_), _propname_, \
_proptype_, _val_, _nval_); \
+ else \
+ _ret_ = -ENXIO; \
_ret_; \
})
else if (is_acpi_node(fwnode))
return acpi_dev_prop_read(to_acpi_node(fwnode), propname,
DEV_PROP_STRING, val, nval);
-
- return pset_prop_read_array(to_pset(fwnode), propname,
- DEV_PROP_STRING, val, nval);
+ else if (is_pset(fwnode))
+ return pset_prop_read_array(to_pset(fwnode), propname,
+ DEV_PROP_STRING, val, nval);
+ return -ENXIO;
}
EXPORT_SYMBOL_GPL(fwnode_property_read_string_array);
return acpi_dev_prop_read(to_acpi_node(fwnode), propname,
DEV_PROP_STRING, val, 1);
- return -ENXIO;
+ return pset_prop_read_array(to_pset(fwnode), propname,
+ DEV_PROP_STRING, val, 1);
}
EXPORT_SYMBOL_GPL(fwnode_property_read_string);
return coherent;
}
EXPORT_SYMBOL_GPL(device_dma_is_coherent);
+
+/**
+ * device_get_phy_mode - Get phy mode for given device
+ * @dev: Pointer to the given device
+ *
+ * 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 device_get_phy_mode(struct device *dev)
+{
+ const char *pm;
+ int err, i;
+
+ err = device_property_read_string(dev, "phy-mode", &pm);
+ if (err < 0)
+ err = device_property_read_string(dev,
+ "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(device_get_phy_mode);
+
+static void *device_get_mac_addr(struct device *dev,
+ const char *name, char *addr,
+ int alen)
+{
+ int ret = device_property_read_u8_array(dev, name, addr, alen);
+
+ if (ret == 0 && alen == ETH_ALEN && is_valid_ether_addr(addr))
+ return addr;
+ return NULL;
+}
+
+/**
+ * device_get_mac_address - Get the MAC for a given device
+ * @dev: Pointer to the device
+ * @addr: Address of buffer to store the MAC in
+ * @alen: Length of the buffer pointed to by addr, should be ETH_ALEN
+ *
+ * Search the firmware node 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 firmware tables, but were not updated by the firmware. 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.
+*/
+void *device_get_mac_address(struct device *dev, char *addr, int alen)
+{
+ addr = device_get_mac_addr(dev, "mac-address", addr, alen);
+ if (addr)
+ return addr;
+
+ addr = device_get_mac_addr(dev, "local-mac-address", addr, alen);
+ if (addr)
+ return addr;
+
+ return device_get_mac_addr(dev, "address", addr, alen);
+}
+EXPORT_SYMBOL(device_get_mac_address);
projects / linux-2.6-microblaze.git / blobdiff