linux-kernel - [PATCH 4/5] phylib: Support attaching to generic 10g driver

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Message-ID: <1385459707-32467-1-git-send-email-shh.xie@gmail.com>
Date:	Tue, 26 Nov 2013 17:55:07 +0800
From:	<shh.xie@...il.com>
To:	<davem@...emloft.net>, <jg1.han@...sung.com>,
	<mugunthanvnm@...com>, <f.fainelli@...il.com>,
	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:	<Emilian.Medve@...escale.com>, <madalin.bucur@...escale.com>
Subject: [PATCH 4/5] phylib: Support attaching to generic 10g driver

From: Andy Fleming <afleming@...escale.com>

phy_attach_direct() may now attach to a generic 10G driver. It can
also be used exactly as phy_connect_direct(), which will be useful
when using of_mdio, as phy_connect (and therefore of_phy_connect)
start the PHY state machine, which is currently irrelevant for 10G
PHYs.

Signed-off-by: Andy Fleming <afleming@...escale.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@...escale.com>
---
v2: align with the array genphy_driver.

 drivers/net/phy/phy_device.c | 22 ++++++++++------------
 include/linux/phy.h          |  2 ++
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 96a5e03..a6b4ce0 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -61,9 +61,6 @@ extern void mdio_bus_exit(void);
 static LIST_HEAD(phy_fixup_list);
 static DEFINE_MUTEX(phy_fixup_lock);
 
-static int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
-			     u32 flags, phy_interface_t interface);
-
 /*
  * Creates a new phy_fixup and adds it to the list
  * @bus_id: A string which matches phydev->dev.bus_id (or PHY_ANY_ID)
@@ -521,12 +518,12 @@ int phy_init_hw(struct phy_device *phydev)
  *
  * Description: Called by drivers to attach to a particular PHY
  *     device. The phy_device is found, and properly hooked up
- *     to the phy_driver.  If no driver is attached, then the
- *     genphy_driver is used.  The phy_device is given a ptr to
+ *     to the phy_driver.  If no driver is attached, then a
+ *     generic driver is used.  The phy_device is given a ptr to
  *     the attaching device, and given a callback for link status
  *     change.  The phy_device is returned to the attaching driver.
  */
-static int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
+int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 			     u32 flags, phy_interface_t interface)
 {
 	struct device *d = &phydev->dev;
@@ -535,12 +532,10 @@ static int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 	/* Assume that if there is no driver, that it doesn't
 	 * exist, and we should use the genphy driver. */
 	if (NULL == d->driver) {
-		if (phydev->is_c45) {
-			pr_err("No driver for phy %x\n", phydev->phy_id);
-			return -ENODEV;
-		}
-
-		d->driver = &genphy_driver[0].driver;
+		if (phydev->is_c45)
+			d->driver = &genphy_driver[1].driver;
+		else
+			d->driver = &genphy_driver[0].driver;
 
 		err = d->driver->probe(d);
 		if (err >= 0)
@@ -573,6 +568,7 @@ static int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 
 	return err;
 }
+EXPORT_SYMBOL(phy_attach_direct);
 
 /**
  * phy_attach - attach a network device to a particular PHY device
@@ -623,6 +619,8 @@ void phy_detach(struct phy_device *phydev)
 	 * real driver could be loaded */
 	if (phydev->dev.driver == &genphy_driver[0].driver)
 		device_release_driver(&phydev->dev);
+	else if (phydev->dev.driver == &genphy_driver[1].driver)
+		device_release_driver(&phydev->dev);
 }
 EXPORT_SYMBOL(phy_detach);
 
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 2606599..00abc35 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -575,6 +575,8 @@ int phy_init_hw(struct phy_device *phydev);
 struct phy_device * phy_attach(struct net_device *dev,
 		const char *bus_id, phy_interface_t interface);
 struct phy_device *phy_find_first(struct mii_bus *bus);
+int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
+			     u32 flags, phy_interface_t interface);
 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
 		void (*handler)(struct net_device *),
 		phy_interface_t interface);
-- 
1.8.4.1


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