netdev - [PATCH RFC net-next 04/10] net: pcs: xpcs: add xpcs_destroy_pcs() and xpcs_create_pcs

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Message-Id: <E1ssjcp-005Nrx-5r@rmk-PC.armlinux.org.uk>
Date: Mon, 23 Sep 2024 15:01:15 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Jiawen Wu <jiawenwu@...stnetic.com>,
	Jose Abreu <joabreu@...opsys.com>,
	Jose Abreu <Jose.Abreu@...opsys.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Mengyuan Lou <mengyuanlou@...-swift.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>,
	Vladimir Oltean <olteanv@...il.com>
Subject: [PATCH RFC net-next 04/10] net: pcs: xpcs: add xpcs_destroy_pcs() and
 xpcs_create_pcs_mdiodev()

Provide xpcs create/destroy functions that return and take a phylink_pcs
pointer instead of an xpcs pointer. This will be used by drivers that
have been converted to use phylink_pcs pointers internally, rather than
dw_xpcs pointers.

As xpcs_create_mdiodev() no longer makes use of its interface argument,
pass PHY_INTERFACE_MODE_NA into xpcs_create_mdiodev() until it is
removed later in the series.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/pcs/pcs-xpcs.c   | 18 ++++++++++++++++++
 include/linux/pcs/pcs-xpcs.h |  3 +++
 2 files changed, 21 insertions(+)

diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c
index 8765b01c0b5d..9b61f97222b9 100644
--- a/drivers/net/pcs/pcs-xpcs.c
+++ b/drivers/net/pcs/pcs-xpcs.c
@@ -1550,6 +1550,18 @@ struct dw_xpcs *xpcs_create_mdiodev(struct mii_bus *bus, int addr,
 }
 EXPORT_SYMBOL_GPL(xpcs_create_mdiodev);
 
+struct phylink_pcs *xpcs_create_pcs_mdiodev(struct mii_bus *bus, int addr)
+{
+	struct dw_xpcs *xpcs;
+
+	xpcs = xpcs_create_mdiodev(bus, addr, PHY_INTERFACE_MODE_NA);
+	if (IS_ERR(xpcs))
+		return ERR_CAST(xpcs);
+
+	return &xpcs->pcs;
+}
+EXPORT_SYMBOL_GPL(xpcs_create_pcs_mdiodev);
+
 /**
  * xpcs_create_fwnode() - Create a DW xPCS instance from @fwnode
  * @fwnode: fwnode handle poining to the DW XPCS device
@@ -1599,5 +1611,11 @@ void xpcs_destroy(struct dw_xpcs *xpcs)
 }
 EXPORT_SYMBOL_GPL(xpcs_destroy);
 
+void xpcs_destroy_pcs(struct phylink_pcs *pcs)
+{
+	xpcs_destroy(phylink_pcs_to_xpcs(pcs));
+}
+EXPORT_SYMBOL_GPL(xpcs_destroy_pcs);
+
 MODULE_DESCRIPTION("Synopsys DesignWare XPCS library");
 MODULE_LICENSE("GPL v2");
diff --git a/include/linux/pcs/pcs-xpcs.h b/include/linux/pcs/pcs-xpcs.h
index fd75d0605bb6..a4e2243ce647 100644
--- a/include/linux/pcs/pcs-xpcs.h
+++ b/include/linux/pcs/pcs-xpcs.h
@@ -78,4 +78,7 @@ struct dw_xpcs *xpcs_create_fwnode(struct fwnode_handle *fwnode,
 				   phy_interface_t interface);
 void xpcs_destroy(struct dw_xpcs *xpcs);
 
+struct phylink_pcs *xpcs_create_pcs_mdiodev(struct mii_bus *bus, int addr);
+void xpcs_destroy_pcs(struct phylink_pcs *pcs);
+
 #endif /* __LINUX_PCS_XPCS_H */
-- 
2.30.2