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authorHeikki Krogerus <heikki.krogerus@linux.intel.com>2015-05-13 15:26:52 +0300
committerFelipe Balbi <balbi@ti.com>2015-05-13 12:06:56 -0500
commit723487a6ff50bb88c628a859aeac3fe721f0d1fa (patch)
tree53280a33f392ad1aed2297957d6871d8d6d11c1c /drivers/phy
parent88bc9d194ff69875a4d3c958d969ed2a053c8308 (diff)
downloadop-kernel-dev-723487a6ff50bb88c628a859aeac3fe721f0d1fa.zip
op-kernel-dev-723487a6ff50bb88c628a859aeac3fe721f0d1fa.tar.gz
phy: helpers for USB ULPI PHY registering
ULPI PHYs need to be bound to their controllers with a lookup. This adds helpers that the ULPI drivers can use to do both, the registration of the PHY and the lookup, at the same time. Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: David Cohen <david.a.cohen@linux.intel.com> Acked-by: Kishon Vijay Abraham I <kishon@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/phy')
-rw-r--r--drivers/phy/ulpi_phy.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/phy/ulpi_phy.h b/drivers/phy/ulpi_phy.h
new file mode 100644
index 0000000..ac49fb6
--- /dev/null
+++ b/drivers/phy/ulpi_phy.h
@@ -0,0 +1,31 @@
+#include <linux/phy/phy.h>
+
+/**
+ * Helper that registers PHY for a ULPI device and adds a lookup for binding it
+ * and it's controller, which is always the parent.
+ */
+static inline struct phy
+*ulpi_phy_create(struct ulpi *ulpi, struct phy_ops *ops)
+{
+ struct phy *phy;
+ int ret;
+
+ phy = phy_create(&ulpi->dev, NULL, ops);
+ if (IS_ERR(phy))
+ return phy;
+
+ ret = phy_create_lookup(phy, "usb2-phy", dev_name(ulpi->dev.parent));
+ if (ret) {
+ phy_destroy(phy);
+ return ERR_PTR(ret);
+ }
+
+ return phy;
+}
+
+/* Remove a PHY that was created with ulpi_phy_create() and it's lookup. */
+static inline void ulpi_phy_destroy(struct ulpi *ulpi, struct phy *phy)
+{
+ phy_remove_lookup(phy, "usb2-phy", dev_name(ulpi->dev.parent));
+ phy_destroy(phy);
+}
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