Add the rt linux 4.1.3-rt3 as base

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

diff --git a/kernel/drivers/net/phy/amd.c b/kernel/drivers/net/phy/amd.c
new file mode 100644 (file)
index 0000000..65a488f
--- /dev/null
+++ b/kernel/drivers/net/phy/amd.c
@@ -0,0 +1,85 @@
+/*
+ * Driver for AMD am79c PHYs
+ *
+ * Author: Heiko Schocher <hs@denx.de>
+ *
+ * Copyright (c) 2011 DENX Software Engineering GmbH
+ *
+ * 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/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/phy.h>
+
+#define PHY_ID_AM79C874                0x0022561b
+
+#define MII_AM79C_IR           17      /* Interrupt Status/Control Register */
+#define MII_AM79C_IR_EN_LINK   0x0400  /* IR enable Linkstate */
+#define MII_AM79C_IR_EN_ANEG   0x0100  /* IR enable Aneg Complete */
+#define MII_AM79C_IR_IMASK_INIT        (MII_AM79C_IR_EN_LINK | MII_AM79C_IR_EN_ANEG)
+
+MODULE_DESCRIPTION("AMD PHY driver");
+MODULE_AUTHOR("Heiko Schocher <hs@denx.de>");
+MODULE_LICENSE("GPL");
+
+static int am79c_ack_interrupt(struct phy_device *phydev)
+{
+       int err;
+
+       err = phy_read(phydev, MII_BMSR);
+       if (err < 0)
+               return err;
+
+       err = phy_read(phydev, MII_AM79C_IR);
+       if (err < 0)
+               return err;
+
+       return 0;
+}
+
+static int am79c_config_init(struct phy_device *phydev)
+{
+       return 0;
+}
+
+static int am79c_config_intr(struct phy_device *phydev)
+{
+       int err;
+
+       if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+               err = phy_write(phydev, MII_AM79C_IR, MII_AM79C_IR_IMASK_INIT);
+       else
+               err = phy_write(phydev, MII_AM79C_IR, 0);
+
+       return err;
+}
+
+static struct phy_driver am79c_driver[] = { {
+       .phy_id         = PHY_ID_AM79C874,
+       .name           = "AM79C874",
+       .phy_id_mask    = 0xfffffff0,
+       .features       = PHY_BASIC_FEATURES,
+       .flags          = PHY_HAS_INTERRUPT,
+       .config_init    = am79c_config_init,
+       .config_aneg    = genphy_config_aneg,
+       .read_status    = genphy_read_status,
+       .ack_interrupt  = am79c_ack_interrupt,
+       .config_intr    = am79c_config_intr,
+       .driver         = { .owner = THIS_MODULE,},
+} };
+
+module_phy_driver(am79c_driver);
+
+static struct mdio_device_id __maybe_unused amd_tbl[] = {
+       { PHY_ID_AM79C874, 0xfffffff0 },
+       { }
+};
+
+MODULE_DEVICE_TABLE(mdio, amd_tbl);