From: Calvin Johnson <calvin.johnson@oss.nxp.com>
To: Grant Likely <grant.likely@arm.com>,
"Rafael J . Wysocki" <rafael@kernel.org>,
Jeremy Linton <jeremy.linton@arm.com>,
Andrew Lunn <andrew@lunn.ch>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
Florian Fainelli <f.fainelli@gmail.com>,
Russell King - ARM Linux admin <linux@armlinux.org.uk>,
Cristi Sovaiala <cristian.sovaiala@nxp.com>,
Florin Laurentiu Chiculita <florinlaurentiu.chiculita@nxp.com>,
Ioana Ciornei <ioana.ciornei@nxp.com>,
Madalin Bucur <madalin.bucur@oss.nxp.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: linux-kernel@vger.kernel.org, linux.cj@gmail.com,
netdev@vger.kernel.org, linux-acpi@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Diana Madalina Craciun <diana.craciun@nxp.com>,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Calvin Johnson <calvin.johnson@oss.nxp.com>,
"David S. Miller" <davem@davemloft.net>,
Heiner Kallweit <hkallweit1@gmail.com>,
Jakub Kicinski <kuba@kernel.org>
Subject: [net-next PATCH v1 2/7] net: phy: Introduce phy related fwnode functions
Date: Wed, 30 Sep 2020 21:34:25 +0530 [thread overview]
Message-ID: <20200930160430.7908-3-calvin.johnson@oss.nxp.com> (raw)
In-Reply-To: <20200930160430.7908-1-calvin.johnson@oss.nxp.com>
Define fwnode_phy_find_device() to iterate an mdiobus and find the
phy device of the provided phy fwnode. Additionally define
device_phy_find_device() to find phy device of provided device.
Define fwnode_get_phy_node() to get phy_node using named reference.
Signed-off-by: Calvin Johnson <calvin.johnson@oss.nxp.com>
---
drivers/net/phy/phy_device.c | 52 ++++++++++++++++++++++++++++++++++++
include/linux/phy.h | 20 ++++++++++++++
2 files changed, 72 insertions(+)
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 5dab6be6fc38..c4aec56d0a95 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2818,6 +2818,58 @@ static bool phy_drv_supports_irq(struct phy_driver *phydrv)
return phydrv->config_intr && phydrv->ack_interrupt;
}
+/**
+ * fwnode_phy_find_device - Find phy_device on the mdiobus for the provided
+ * phy_fwnode.
+ * @phy_fwnode: Pointer to the phy's fwnode.
+ *
+ * If successful, returns a pointer to the phy_device with the embedded
+ * struct device refcount incremented by one, or NULL on failure.
+ */
+struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode)
+{
+ struct device *d;
+ struct mdio_device *mdiodev;
+
+ if (!phy_fwnode)
+ return NULL;
+
+ d = bus_find_device_by_fwnode(&mdio_bus_type, phy_fwnode);
+ if (d) {
+ mdiodev = to_mdio_device(d);
+ if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY)
+ return to_phy_device(d);
+ put_device(d);
+ }
+
+ return NULL;
+}
+EXPORT_SYMBOL(fwnode_phy_find_device);
+
+/**
+ * device_phy_find_device - For the given device, get the phy_device
+ * @dev: Pointer to the given device
+ *
+ * Refer return conditions of fwnode_phy_find_device().
+ */
+struct phy_device *device_phy_find_device(struct device *dev)
+{
+ return fwnode_phy_find_device(dev_fwnode(dev));
+}
+EXPORT_SYMBOL_GPL(device_phy_find_device);
+
+/**
+ * fwnode_get_phy_node - Get the phy_node using the named reference.
+ * @fwnode: Pointer to fwnode from which phy_node has to be obtained.
+ *
+ * Refer return conditions of fwnode_find_reference().
+ */
+struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode)
+{
+ return fwnode_find_reference(fwnode, "phy-handle", 0);
+}
+EXPORT_SYMBOL_GPL(fwnode_get_phy_node);
+
/**
* 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 eb3cb1a98b45..7b1bf3d46fd3 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1378,10 +1378,30 @@ 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 phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode);
+struct phy_device *device_phy_find_device(struct device *dev);
+struct fwnode_handle *fwnode_get_phy_node(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 phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode)
+{
+ return NULL;
+}
+
+static inline struct phy_device *device_phy_find_device(struct device *dev)
+{
+ return NULL;
+}
+
+static inline
+struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode)
+{
+ return NULL;
+}
+
static inline
struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
{
--
2.17.1
next prev parent reply other threads:[~2020-09-30 16:05 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-30 16:04 [net-next PATCH v1 0/7] ACPI support for dpaa2 driver Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 1/7] Documentation: ACPI: DSD: Document MDIO PHY Calvin Johnson
2020-09-30 16:37 ` Rafael J. Wysocki
2020-10-01 13:26 ` Calvin Johnson
2020-10-02 11:08 ` Grant Likely
2020-10-02 14:13 ` Rafael J. Wysocki
2020-09-30 16:04 ` Calvin Johnson [this message]
2020-09-30 22:03 ` [net-next PATCH v1 2/7] net: phy: Introduce phy related fwnode functions David Miller
2020-10-01 3:58 ` Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 3/7] net: phy: Introduce fwnode_get_phy_id() Calvin Johnson
2020-09-30 16:34 ` Andrew Lunn
2020-09-30 18:07 ` Russell King - ARM Linux admin
2020-09-30 18:19 ` Andrew Lunn
2020-10-01 4:00 ` Calvin Johnson
2020-10-02 10:48 ` Grant Likely
2020-10-02 11:05 ` Grant Likely
2020-10-02 15:14 ` Florian Fainelli
2020-10-02 15:50 ` Russell King - ARM Linux admin
2020-10-03 18:03 ` Calvin Johnson
2020-10-03 18:00 ` Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 4/7] net: mdiobus: Introduce fwnode_mdiobus_register_phy() Calvin Johnson
2020-09-30 22:04 ` David Miller
2020-09-30 16:04 ` [net-next PATCH v1 5/7] phylink: introduce phylink_fwnode_phy_connect() Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 6/7] net: dpaa2-mac: Add ACPI support for DPAA2 MAC driver Calvin Johnson
2020-10-01 15:36 ` Andy Shevchenko
2020-10-03 16:30 ` Calvin Johnson
2020-10-02 11:22 ` Grant Likely
2020-10-03 17:39 ` Calvin Johnson
2020-10-07 15:50 ` Calvin Johnson
2020-09-30 16:04 ` [net-next PATCH v1 7/7] net/fsl: Use _ADR ACPI object to register PHYs Calvin Johnson
2020-09-30 16:27 ` Andrew Lunn
2020-09-30 22:04 ` David Miller
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