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[PATCH/RFC v1 10/12] [MIPS] BCM63XX: Add integrated ethernet PHY support

To: afleming@freescale.com
Subject: [PATCH/RFC v1 10/12] [MIPS] BCM63XX: Add integrated ethernet PHY support for phylib.
From: Maxime Bizon <mbizon@freebox.fr>
Date: Sun, 19 Oct 2008 04:07:03 +0200
Cc: linux-mips@linux-mips.org, netdev@vger.kernel.org, Maxime Bizon <mbizon@freebox.fr>
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
---
 drivers/net/phy/Kconfig   |    6 ++
 drivers/net/phy/Makefile  |    1 +
 drivers/net/phy/bcm63xx.c |  132 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 139 insertions(+), 0 deletions(-)
 create mode 100644 drivers/net/phy/bcm63xx.c

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index d55932a..a5d2c2d 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -56,6 +56,12 @@ config BROADCOM_PHY
          Currently supports the BCM5411, BCM5421, BCM5461, BCM5464, BCM5481
          and BCM5482 PHYs.
 
+config BCM63XX_PHY
+       tristate "Drivers for Broadcom 63xx SOCs internal PHY"
+       depends on BCM63XX
+       ---help---
+         Currently supports the 6348 and 6358 PHYs.
+
 config ICPLUS_PHY
        tristate "Drivers for ICPlus PHYs"
        ---help---
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index eee329f..0d43f58 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -11,6 +11,7 @@ obj-$(CONFIG_QSEMI_PHY)               += qsemi.o
 obj-$(CONFIG_SMSC_PHY)         += smsc.o
 obj-$(CONFIG_VITESSE_PHY)      += vitesse.o
 obj-$(CONFIG_BROADCOM_PHY)     += broadcom.o
+obj-$(CONFIG_BCM63XX_PHY)      += bcm63xx.o
 obj-$(CONFIG_ICPLUS_PHY)       += icplus.o
 obj-$(CONFIG_REALTEK_PHY)      += realtek.o
 obj-$(CONFIG_FIXED_PHY)                += fixed.o
diff --git a/drivers/net/phy/bcm63xx.c b/drivers/net/phy/bcm63xx.c
new file mode 100644
index 0000000..4fed95e
--- /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);
-- 
1.5.4.3


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