From: "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
To: Andrew Lunn <andrew@lunn.ch>, Heiner Kallweit <hkallweit1@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Ioana Ciornei <ioana.ciornei@nxp.com>,
Jakub Kicinski <kuba@kernel.org>,
Madalin Bucur <madalin.bucur@nxp.com>,
netdev@vger.kernel.org, Paolo Abeni <pabeni@redhat.com>,
Sean Anderson <sean.anderson@seco.com>
Subject: [PATCH net-next v2 04/11] net: pcs: lynx: add lynx_pcs_create_fwnode()
Date: Wed, 07 Jun 2023 12:58:29 +0100 [thread overview]
Message-ID: <E1q6ro5-00CfaO-4y@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <ZIBwuw+IuGQo5yV8@shell.armlinux.org.uk>
Add a helper to create a lynx PCS from a fwnode handle.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
drivers/net/pcs/pcs-lynx.c | 29 +++++++++++++++++++++++++++++
include/linux/pcs-lynx.h | 1 +
2 files changed, 30 insertions(+)
diff --git a/drivers/net/pcs/pcs-lynx.c b/drivers/net/pcs/pcs-lynx.c
index a90f74172f49..b0907c67d469 100644
--- a/drivers/net/pcs/pcs-lynx.c
+++ b/drivers/net/pcs/pcs-lynx.c
@@ -353,6 +353,35 @@ struct phylink_pcs *lynx_pcs_create_mdiodev(struct mii_bus *bus, int addr)
}
EXPORT_SYMBOL(lynx_pcs_create_mdiodev);
+struct phylink_pcs *lynx_pcs_create_fwnode(struct fwnode_handle *node)
+{
+ struct mdio_device *mdio;
+ struct phylink_pcs *pcs;
+
+ mdio = fwnode_mdio_find_device(node);
+ if (!mdio)
+ return ERR_PTR(-EPROBE_DEFER);
+
+ pcs = lynx_pcs_create(mdio);
+
+ /* Convert failure to create the PCS to an error pointer, so this
+ * function has a consistent return value strategy.
+ */
+ if (!pcs)
+ pcs = ERR_PTR(-ENOMEM);
+
+ /* lynx_create() has taken a refcount on the mdiodev if it was
+ * successful. If lynx_create() fails, this will free the mdio
+ * device here. In any case, we don't need to hold our reference
+ * anymore, and putting it here will allow mdio_device_put() in
+ * lynx_destroy() to automatically free the mdio device.
+ */
+ mdio_device_put(mdio);
+
+ return pcs;
+}
+EXPORT_SYMBOL_GPL(lynx_pcs_create_fwnode);
+
void lynx_pcs_destroy(struct phylink_pcs *pcs)
{
struct lynx_pcs *lynx = phylink_pcs_to_lynx(pcs);
diff --git a/include/linux/pcs-lynx.h b/include/linux/pcs-lynx.h
index 25f68a096bfe..123e813df771 100644
--- a/include/linux/pcs-lynx.h
+++ b/include/linux/pcs-lynx.h
@@ -11,6 +11,7 @@
struct phylink_pcs *lynx_pcs_create(struct mdio_device *mdio);
struct phylink_pcs *lynx_pcs_create_mdiodev(struct mii_bus *bus, int addr);
+struct phylink_pcs *lynx_pcs_create_fwnode(struct fwnode_handle *node);
void lynx_pcs_destroy(struct phylink_pcs *pcs);
--
2.30.2
next prev parent reply other threads:[~2023-06-07 11:58 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-07 11:57 [PATCH net-next v2 00/11] complete Lynx mdio device handling Russell King (Oracle)
2023-06-07 11:58 ` [PATCH net-next v2 01/11] net: dpaa2-mac: allow lynx PCS to manage mdiodev lifetime Russell King (Oracle)
2023-06-07 11:58 ` [PATCH net-next v2 02/11] net: fman_memac: allow lynx PCS to handle " Russell King (Oracle)
2023-06-07 11:58 ` [PATCH net-next v2 03/11] net: pcs: lynx: remove lynx_get_mdio_device() Russell King (Oracle)
2023-06-07 11:58 ` Russell King (Oracle) [this message]
2023-06-07 11:58 ` [PATCH net-next v2 05/11] net: dpaa2-mac: use lynx_pcs_create_fwnode() Russell King (Oracle)
2023-06-07 11:58 ` [PATCH net-next v2 06/11] net: fman_memac: " Russell King (Oracle)
2023-06-07 11:58 ` [PATCH net-next v2 07/11] net: pcs: lynx: make lynx_pcs_create() static Russell King (Oracle)
2023-06-07 11:58 ` [PATCH net-next v2 08/11] net: pcs: lynx: change lynx_pcs_create() to return error-pointers Russell King (Oracle)
2023-06-07 11:58 ` [PATCH net-next v2 09/11] net: pcs: lynx: check that the fwnode is available prior to use Russell King (Oracle)
2023-06-07 11:58 ` [PATCH net-next v2 10/11] net: dpaa2: use pcs-lynx's check for fwnode availability Russell King (Oracle)
2023-06-07 11:59 ` [PATCH net-next v2 11/11] net: fman_memac: " Russell King (Oracle)
2023-06-09 2:30 ` [PATCH net-next v2 00/11] complete Lynx mdio device handling patchwork-bot+netdevbpf
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