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>,
Marcin Wojtas <mw@semihalf.com>,
Pieter Jansen Van Vuuren <pieter.jansenvv@bamboosystems.io>,
Jon <jon@solid-run.com>, Saravana Kannan <saravanak@google.com>,
Randy Dunlap <rdunlap@infradead.org>
Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
linux-acpi@vger.kernel.org,
Laurentiu Tudor <laurentiu.tudor@nxp.com>,
Diana Madalina Craciun <diana.craciun@nxp.com>,
linux-arm-kernel@lists.infradead.org, linux.cj@gmail.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 v6 03/15] net: phy: Introduce phy related fwnode functions
Date: Thu, 18 Feb 2021 10:56:42 +0530 [thread overview]
Message-ID: <20210218052654.28995-4-calvin.johnson@oss.nxp.com> (raw)
In-Reply-To: <20210218052654.28995-1-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>
---
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3:
- Add more info on legacy DT properties "phy" and "phy-device"
- Redefine fwnode_phy_find_device() to follow of_phy_find_device()
Changes in v2:
- use reverse christmas tree ordering for local variables
drivers/net/phy/phy_device.c | 62 ++++++++++++++++++++++++++++++++++++
include/linux/phy.h | 20 ++++++++++++
2 files changed, 82 insertions(+)
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index e673912e8938..537a25b9ee94 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -9,6 +9,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#include <linux/acpi.h>
#include <linux/bitmap.h>
#include <linux/delay.h>
#include <linux/errno.h>
@@ -2844,6 +2845,67 @@ struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode)
}
EXPORT_SYMBOL(fwnode_mdio_find_device);
+/**
+ * fwnode_phy_find_device - For provided phy_fwnode, find phy_device.
+ *
+ * @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 mdio_device *mdiodev;
+
+ mdiodev = fwnode_mdio_find_device(phy_fwnode);
+ if (!mdiodev)
+ return NULL;
+
+ if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY)
+ return to_phy_device(&mdiodev->dev);
+
+ put_device(&mdiodev->dev);
+
+ 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().
+ * For ACPI, only "phy-handle" is supported. Legacy DT properties "phy"
+ * and "phy-device" are not supported in ACPI. DT supports all the three
+ * named references to the phy node.
+ */
+struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode)
+{
+ struct fwnode_handle *phy_node;
+
+ /* Only phy-handle is used for ACPI */
+ phy_node = fwnode_find_reference(fwnode, "phy-handle", 0);
+ if (is_acpi_node(fwnode) || !IS_ERR(phy_node))
+ return phy_node;
+ phy_node = fwnode_find_reference(fwnode, "phy", 0);
+ if (IS_ERR(phy_node))
+ phy_node = fwnode_find_reference(fwnode, "phy-device", 0);
+ return phy_node;
+}
+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 f5eb1e3981a1..720a2a8cf355 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -1367,6 +1367,9 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id,
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 *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);
@@ -1376,6 +1379,23 @@ struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode)
{
return 0;
}
+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:[~2021-02-18 5:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-18 5:26 [net-next PATCH v6 00/15] ACPI support for dpaa2 driver Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 01/15] Documentation: ACPI: DSD: Document MDIO PHY Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 02/15] net: phy: Introduce fwnode_mdio_find_device() Calvin Johnson
2021-02-18 19:05 ` Jakub Kicinski
2021-02-18 5:26 ` Calvin Johnson [this message]
2021-02-18 5:26 ` [net-next PATCH v6 04/15] of: mdio: Refactor of_phy_find_device() Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 05/15] net: phy: Introduce fwnode_get_phy_id() Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 06/15] of: mdio: Refactor of_get_phy_id() Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 07/15] net: mdiobus: Introduce fwnode_mdiobus_register_phy() Calvin Johnson
2021-02-18 14:52 ` Andy Shevchenko
2021-02-18 5:26 ` [net-next PATCH v6 08/15] of: mdio: Refactor of_mdiobus_register_phy() Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 09/15] ACPI: utils: Introduce acpi_get_local_address() Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 10/15] net: mdio: Add ACPI support code for mdio Calvin Johnson
2021-02-18 15:08 ` Andy Shevchenko
2021-03-08 14:11 ` Calvin Johnson
2021-03-08 14:57 ` Andy Shevchenko
2021-03-08 16:28 ` Calvin Johnson
2021-03-08 16:39 ` Andy Shevchenko
2021-02-18 5:26 ` [net-next PATCH v6 11/15] net: mdiobus: Introduce fwnode_mdiobus_register() Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 12/15] net/fsl: Use fwnode_mdiobus_register() Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 13/15] net: phylink: introduce phylink_fwnode_phy_connect() Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 14/15] net: phylink: Refactor phylink_of_phy_connect() Calvin Johnson
2021-02-18 5:26 ` [net-next PATCH v6 15/15] net: dpaa2-mac: Add ACPI support for DPAA2 MAC driver Calvin Johnson
2021-02-18 15:04 ` Andy Shevchenko
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210218052654.28995-4-calvin.johnson@oss.nxp.com \
--to=calvin.johnson@oss.nxp.com \
--cc=andrew@lunn.ch \
--cc=andy.shevchenko@gmail.com \
--cc=cristian.sovaiala@nxp.com \
--cc=davem@davemloft.net \
--cc=diana.craciun@nxp.com \
--cc=f.fainelli@gmail.com \
--cc=florinlaurentiu.chiculita@nxp.com \
--cc=grant.likely@arm.com \
--cc=heikki.krogerus@linux.intel.com \
--cc=hkallweit1@gmail.com \
--cc=ioana.ciornei@nxp.com \
--cc=jeremy.linton@arm.com \
--cc=jon@solid-run.com \
--cc=kuba@kernel.org \
--cc=laurentiu.tudor@nxp.com \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux.cj@gmail.com \
--cc=linux@armlinux.org.uk \
--cc=madalin.bucur@oss.nxp.com \
--cc=mw@semihalf.com \
--cc=netdev@vger.kernel.org \
--cc=pieter.jansenvv@bamboosystems.io \
--cc=rafael@kernel.org \
--cc=rdunlap@infradead.org \
--cc=saravanak@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).