Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / phy / bcm63xx.c

diff --git a/kernel/drivers/net/phy/bcm63xx.c b/kernel/drivers/net/phy/bcm63xx.c
new file mode 100644 (file)
index 0000000..830ec31
--- /dev/null
+++ b/kernel/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);