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authorDongpo Li <lidongpo@hisilicon.com>2016-07-15 16:26:34 +0800
committerDavid S. Miller <davem@davemloft.net>2016-07-16 21:32:58 -0700
commitb786241253041c13d94309ca4dace301833f63d1 (patch)
treebb7912b438cebc673cfa03b09ec65e7836302707 /drivers/of
parent4960e4b1e69908ee70c716755a9415079e0d554f (diff)
downloadlinux-b786241253041c13d94309ca4dace301833f63d1.tar.bz2
of_mdio: Abstract a general interface for phy connect
Abstract a general interface "of_phy_get_and_connect" for PHY connect. User will have no bother with getting "phy-mode" and "phy-handle" any more. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Dongpo Li <lidongpo@hisilicon.com> Reviewed-by: Jiancheng Xue <xuejiancheng@hisilicon.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/of_mdio.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
index e2b50bc12f23..b470f7e3521d 100644
--- a/drivers/of/of_mdio.c
+++ b/drivers/of/of_mdio.c
@@ -19,6 +19,7 @@
#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/of_mdio.h>
+#include <linux/of_net.h>
#include <linux/module.h>
MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>");
@@ -332,6 +333,41 @@ struct phy_device *of_phy_connect(struct net_device *dev,
EXPORT_SYMBOL(of_phy_connect);
/**
+ * of_phy_get_and_connect
+ * - Get phy node and connect to the phy described in the device tree
+ * @dev: pointer to net_device claiming the phy
+ * @np: Pointer to device tree node for the net_device claiming the phy
+ * @hndlr: Link state callback for the network device
+ *
+ * If successful, returns a pointer to the phy_device with the embedded
+ * struct device refcount incremented by one, or NULL on failure. The
+ * refcount must be dropped by calling phy_disconnect() or phy_detach().
+ */
+struct phy_device *of_phy_get_and_connect(struct net_device *dev,
+ struct device_node *np,
+ void (*hndlr)(struct net_device *))
+{
+ phy_interface_t iface;
+ struct device_node *phy_np;
+ struct phy_device *phy;
+
+ iface = of_get_phy_mode(np);
+ if (iface < 0)
+ return NULL;
+
+ phy_np = of_parse_phandle(np, "phy-handle", 0);
+ if (!phy_np)
+ return NULL;
+
+ phy = of_phy_connect(dev, phy_np, hndlr, 0, iface);
+
+ of_node_put(phy_np);
+
+ return phy;
+}
+EXPORT_SYMBOL(of_phy_get_and_connect);
+
+/**
* of_phy_attach - Attach to a PHY without starting the state machine
* @dev: pointer to net_device claiming the phy
* @phy_np: Node pointer for the PHY