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path: root/drivers/net/phy/realtek.c
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Diffstat (limited to 'drivers/net/phy/realtek.c')
-rw-r--r--drivers/net/phy/realtek.c130
1 files changed, 130 insertions, 0 deletions
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
new file mode 100644
index 0000000..b7e2753
--- /dev/null
+++ b/drivers/net/phy/realtek.c
@@ -0,0 +1,130 @@
+/*
+ * RealTek PHY drivers
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Copyright 2010-2011 Freescale Semiconductor, Inc.
+ * author Andy Fleming
+ *
+ */
+#include <config.h>
+#include <common.h>
+#include <phy.h>
+
+#define PHY_AUTONEGOTIATE_TIMEOUT 5000
+
+/* RTL8211B PHY Status Register */
+#define MIIM_RTL8211B_PHY_STATUS 0x11
+#define MIIM_RTL8211B_PHYSTAT_SPEED 0xc000
+#define MIIM_RTL8211B_PHYSTAT_GBIT 0x8000
+#define MIIM_RTL8211B_PHYSTAT_100 0x4000
+#define MIIM_RTL8211B_PHYSTAT_DUPLEX 0x2000
+#define MIIM_RTL8211B_PHYSTAT_SPDDONE 0x0800
+#define MIIM_RTL8211B_PHYSTAT_LINK 0x0400
+
+
+/* RealTek RTL8211B */
+static int rtl8211b_config(struct phy_device *phydev)
+{
+ phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, BMCR_RESET);
+
+ genphy_config_aneg(phydev);
+
+ return 0;
+}
+
+static int rtl8211b_parse_status(struct phy_device *phydev)
+{
+ unsigned int speed;
+ unsigned int mii_reg;
+
+ mii_reg = phy_read(phydev, MDIO_DEVAD_NONE, MIIM_RTL8211B_PHY_STATUS);
+
+ if (!(mii_reg & MIIM_RTL8211B_PHYSTAT_SPDDONE)) {
+ int i = 0;
+
+ /* in case of timeout ->link is cleared */
+ phydev->link = 1;
+ puts("Waiting for PHY realtime link");
+ while (!(mii_reg & MIIM_RTL8211B_PHYSTAT_SPDDONE)) {
+ /* Timeout reached ? */
+ if (i > PHY_AUTONEGOTIATE_TIMEOUT) {
+ puts(" TIMEOUT !\n");
+ phydev->link = 0;
+ break;
+ }
+
+ if ((i++ % 1000) == 0)
+ putc('.');
+ udelay(1000); /* 1 ms */
+ mii_reg = phy_read(phydev, MDIO_DEVAD_NONE,
+ MIIM_RTL8211B_PHY_STATUS);
+ }
+ puts(" done\n");
+ udelay(500000); /* another 500 ms (results in faster booting) */
+ } else {
+ if (mii_reg & MIIM_RTL8211B_PHYSTAT_LINK)
+ phydev->link = 1;
+ else
+ phydev->link = 0;
+ }
+
+ if (mii_reg & MIIM_RTL8211B_PHYSTAT_DUPLEX)
+ phydev->duplex = DUPLEX_FULL;
+ else
+ phydev->duplex = DUPLEX_HALF;
+
+ speed = (mii_reg & MIIM_RTL8211B_PHYSTAT_SPEED);
+
+ switch (speed) {
+ case MIIM_RTL8211B_PHYSTAT_GBIT:
+ phydev->speed = SPEED_1000;
+ break;
+ case MIIM_RTL8211B_PHYSTAT_100:
+ phydev->speed = SPEED_100;
+ break;
+ default:
+ phydev->speed = SPEED_10;
+ }
+
+ return 0;
+}
+
+static int rtl8211b_startup(struct phy_device *phydev)
+{
+ /* Read the Status (2x to make sure link is right) */
+ genphy_update_link(phydev);
+ rtl8211b_parse_status(phydev);
+
+ return 0;
+}
+
+static struct phy_driver RTL8211B_driver = {
+ .name = "RealTek RTL8211B",
+ .uid = 0x1cc910,
+ .mask = 0xfffff0,
+ .features = PHY_GBIT_FEATURES,
+ .config = &rtl8211b_config,
+ .startup = &rtl8211b_startup,
+ .shutdown = &genphy_shutdown,
+};
+
+int phy_realtek_init(void)
+{
+ phy_register(&RTL8211B_driver);
+
+ return 0;
+}