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Subject[PATCH net-next v9 02/15] net: phy: Introduce fwnode_mdio_find_device()
Date
From: Calvin Johnson <calvin.johnson@oss.nxp.com>

Define fwnode_mdio_find_device() to get a pointer to the
mdio_device from fwnode passed to the function.

Refactor of_mdio_find_device() to use fwnode_mdio_find_device().

Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Acked-by: Grant Likely <grant.likely@arm.com>
---

Changes in v9: None
Changes in v8: None
Changes in v7:
- correct fwnode_mdio_find_device() description

Changes in v6:
- fix warning for function parameter of fwnode_mdio_find_device()

Changes in v5: None
Changes in v4: None
Changes in v3: None
Changes in v2: None


drivers/net/mdio/of_mdio.c | 11 +----------
drivers/net/phy/phy_device.c | 23 +++++++++++++++++++++++
include/linux/phy.h | 7 +++++++
3 files changed, 31 insertions(+), 10 deletions(-)

diff --git a/drivers/net/mdio/of_mdio.c b/drivers/net/mdio/of_mdio.c
index 8e97d5b825f5..6ef8b6e40189 100644
--- a/drivers/net/mdio/of_mdio.c
+++ b/drivers/net/mdio/of_mdio.c
@@ -347,16 +347,7 @@ EXPORT_SYMBOL(of_mdiobus_register);
*/
struct mdio_device *of_mdio_find_device(struct device_node *np)
{
- struct device *d;
-
- if (!np)
- return NULL;
-
- d = bus_find_device_by_of_node(&mdio_bus_type, np);
- if (!d)
- return NULL;
-
- return to_mdio_device(d);
+ return fwnode_mdio_find_device(of_fwnode_handle(np));
}
EXPORT_SYMBOL(of_mdio_find_device);

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 495d86b4af7c..dca454b5c209 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2875,6 +2875,29 @@ static bool phy_drv_supports_irq(struct phy_driver *phydrv)
return phydrv->config_intr && phydrv->handle_interrupt;
}

+/**
+ * fwnode_mdio_find_device - Given a fwnode, find the mdio_device
+ * @fwnode: pointer to the mdio_device's fwnode
+ *
+ * If successful, returns a pointer to the mdio_device with the embedded
+ * struct device refcount incremented by one, or NULL on failure.
+ * The caller should call put_device() on the mdio_device after its use.
+ */
+struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode)
+{
+ struct device *d;
+
+ if (!fwnode)
+ return NULL;
+
+ d = bus_find_device_by_fwnode(&mdio_bus_type, fwnode);
+ if (!d)
+ return NULL;
+
+ return to_mdio_device(d);
+}
+EXPORT_SYMBOL(fwnode_mdio_find_device);
+
/**
* phy_probe - probe and init a PHY device
* @dev: device to probe and init
diff --git a/include/linux/phy.h b/include/linux/phy.h
index ed332ac92e25..7aa97f4e5387 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1377,10 +1377,17 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id,
bool is_c45,
struct phy_c45_device_ids *c45_ids);
#if IS_ENABLED(CONFIG_PHYLIB)
+struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode);
struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45);
int phy_device_register(struct phy_device *phy);
void phy_device_free(struct phy_device *phydev);
#else
+static inline
+struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode)
+{
+ return 0;
+}
+
static inline
struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
{
--
2.31.1
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