MIPS: BCM63XX: Add integrated ethernet PHY support for phylib.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 drivers/net/phy/Kconfig   |    6 ++
 drivers/net/phy/Makefile  |    1
 drivers/net/phy/bcm63xx.c |  132 ++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 139 insertions(+)
 create mode 100644 drivers/net/phy/bcm63xx.c
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 132 insertions, 0 deletions

diff --git a/drivers/net/phy/bcm63xx.c b/drivers/net/phy/bcm63xx.c
new file mode 100644
index 00000000000..4fed95e8350
--- /dev/null
+++ b/drivers/net/phy/bcm63xx.c
@@ -0,0 +1,132 @@
+/*
+ *	Driver for Broadcom 63xx SOCs integrated PHYs
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ */
+#include <linux/module.h>
+#include <linux/phy.h>
+
+#define MII_BCM63XX_IR		0x1a	/* interrupt register */
+#define MII_BCM63XX_IR_EN	0x4000	/* global interrupt enable */
+#define MII_BCM63XX_IR_DUPLEX	0x0800	/* duplex changed */
+#define MII_BCM63XX_IR_SPEED	0x0400	/* speed changed */
+#define MII_BCM63XX_IR_LINK	0x0200	/* link changed */
+#define MII_BCM63XX_IR_GMASK	0x0100	/* global interrupt mask */
+
+MODULE_DESCRIPTION("Broadcom 63xx internal PHY driver");
+MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
+MODULE_LICENSE("GPL");
+
+static int bcm63xx_config_init(struct phy_device *phydev)
+{
+	int reg, err;
+
+	reg = phy_read(phydev, MII_BCM63XX_IR);
+	if (reg < 0)
+		return reg;
+
+	/* Mask interrupts globally.  */
+	reg |= MII_BCM63XX_IR_GMASK;
+	err = phy_write(phydev, MII_BCM63XX_IR, reg);
+	if (err < 0)
+		return err;
+
+	/* Unmask events we are interested in  */
+	reg = ~(MII_BCM63XX_IR_DUPLEX |
+		MII_BCM63XX_IR_SPEED |
+		MII_BCM63XX_IR_LINK) |
+		MII_BCM63XX_IR_EN;
+	err = phy_write(phydev, MII_BCM63XX_IR, reg);
+	if (err < 0)
+		return err;
+	return 0;
+}
+
+static int bcm63xx_ack_interrupt(struct phy_device *phydev)
+{
+	int reg;
+
+	/* Clear pending interrupts.  */
+	reg = phy_read(phydev, MII_BCM63XX_IR);
+	if (reg < 0)
+		return reg;
+
+	return 0;
+}
+
+static int bcm63xx_config_intr(struct phy_device *phydev)
+{
+	int reg, err;
+
+	reg = phy_read(phydev, MII_BCM63XX_IR);
+	if (reg < 0)
+		return reg;
+
+	if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+		reg &= ~MII_BCM63XX_IR_GMASK;
+	else
+		reg |= MII_BCM63XX_IR_GMASK;
+
+	err = phy_write(phydev, MII_BCM63XX_IR, reg);
+	return err;
+}
+
+static struct phy_driver bcm63xx_1_driver = {
+	.phy_id		= 0x00406000,
+	.phy_id_mask	= 0xfffffc00,
+	.name		= "Broadcom BCM63XX (1)",
+	/* ASYM_PAUSE bit is marked RO in datasheet, so don't cheat */
+	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
+	.flags		= PHY_HAS_INTERRUPT,
+	.config_init	= bcm63xx_config_init,
+	.config_aneg	= genphy_config_aneg,
+	.read_status	= genphy_read_status,
+	.ack_interrupt	= bcm63xx_ack_interrupt,
+	.config_intr	= bcm63xx_config_intr,
+	.driver		= { .owner = THIS_MODULE },
+};
+
+/* same phy as above, with just a different OUI */
+static struct phy_driver bcm63xx_2_driver = {
+	.phy_id		= 0x002bdc00,
+	.phy_id_mask	= 0xfffffc00,
+	.name		= "Broadcom BCM63XX (2)",
+	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
+	.flags		= PHY_HAS_INTERRUPT,
+	.config_init	= bcm63xx_config_init,
+	.config_aneg	= genphy_config_aneg,
+	.read_status	= genphy_read_status,
+	.ack_interrupt	= bcm63xx_ack_interrupt,
+	.config_intr	= bcm63xx_config_intr,
+	.driver		= { .owner = THIS_MODULE },
+};
+
+static int __init bcm63xx_phy_init(void)
+{
+	int ret;
+
+	ret = phy_driver_register(&bcm63xx_1_driver);
+	if (ret)
+		goto out_63xx_1;
+	ret = phy_driver_register(&bcm63xx_2_driver);
+	if (ret)
+		goto out_63xx_2;
+	return ret;
+
+out_63xx_2:
+	phy_driver_unregister(&bcm63xx_1_driver);
+out_63xx_1:
+	return ret;
+}
+
+static void __exit bcm63xx_phy_exit(void)
+{
+	phy_driver_unregister(&bcm63xx_1_driver);
+	phy_driver_unregister(&bcm63xx_2_driver);
+}
+
+module_init(bcm63xx_phy_init);
+module_exit(bcm63xx_phy_exit);