Initial import

1 files changed, 111 insertions, 0 deletions

diff --git a/drivers/net/phy/bcm63xx.c b/drivers/net/phy/bcm63xx.c
new file mode 100644
index 000000000..830ec31f9
--- /dev/null
+++ b/drivers/net/phy/bcm63xx.c
@@ -0,0 +1,111 @@
+/*
+ *	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;
+	return phy_write(phydev, MII_BCM63XX_IR, reg);
+}
+
+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_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 | PHY_IS_INTERNAL,
+	.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 */
+	.phy_id		= 0x002bdc00,
+	.phy_id_mask	= 0xfffffc00,
+	.name		= "Broadcom BCM63XX (2)",
+	.features	= (PHY_BASIC_FEATURES | SUPPORTED_Pause),
+	.flags		= PHY_HAS_INTERRUPT | PHY_IS_INTERNAL,
+	.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 },
+} };
+
+module_phy_driver(bcm63xx_driver);
+
+static struct mdio_device_id __maybe_unused bcm63xx_tbl[] = {
+	{ 0x00406000, 0xfffffc00 },
+	{ 0x002bdc00, 0xfffffc00 },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(mdio, bcm63xx_tbl);