Based on driver from Linux kernel 4.18-rc4
Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
---
drivers/net/phy/Kconfig | 5 ++
drivers/net/phy/Makefile | 1 +
drivers/net/phy/davicom.c | 140 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 146 insertions(+)
create mode 100644 drivers/net/phy/davicom.c
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index cda752b65..79fb917ee 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -18,6 +18,11 @@ config AT803X_PHY
---help---
Currently supports the AT8030, AT8031 and AT8035 PHYs.
+config DAVICOM_PHY
+ bool "Driver for Davicom PHYs"
+ ---help---
+ Currently supports dm9161e and dm9131
+
config LXT_PHY
bool "Driver for the Intel LXT PHYs"
---help---
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 30b20f8ee..4424054d9 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -1,6 +1,7 @@
obj-y += phy.o mdio_bus.o
obj-$(CONFIG_AR8327N_PHY) += ar8327.o
obj-$(CONFIG_AT803X_PHY) += at803x.o
+obj-$(CONFIG_DAVICOM_PHY) += davicom.o
obj-$(CONFIG_LXT_PHY) += lxt.o
obj-$(CONFIG_MARVELL_PHY) += marvell.o
obj-$(CONFIG_MICREL_PHY) += micrel.o
diff --git a/drivers/net/phy/davicom.c b/drivers/net/phy/davicom.c
new file mode 100644
index 000000000..8a784b1e5
--- /dev/null
+++ b/drivers/net/phy/davicom.c
@@ -0,0 +1,140 @@
+/*
+ * drivers/net/phy/davicom.c
+ *
+ * Driver for Davicom PHYs
+ *
+ * Author: Andy Fleming
+ *
+ * Copyright (c) 2004 Freescale Semiconductor, Inc.
+ *
+ * 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 <common.h>
+#include <init.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+
+#define MII_DM9161_SCR 0x10
+#define MII_DM9161_SCR_INIT 0x0610
+#define MII_DM9161_SCR_RMII 0x0100
+
+/* DM9161 Interrupt Register */
+#define MII_DM9161_INTR 0x15
+#define MII_DM9161_INTR_PEND 0x8000
+#define MII_DM9161_INTR_DPLX_MASK 0x0800
+#define MII_DM9161_INTR_SPD_MASK 0x0400
+#define MII_DM9161_INTR_LINK_MASK 0x0200
+#define MII_DM9161_INTR_MASK 0x0100
+#define MII_DM9161_INTR_DPLX_CHANGE 0x0010
+#define MII_DM9161_INTR_SPD_CHANGE 0x0008
+#define MII_DM9161_INTR_LINK_CHANGE 0x0004
+#define MII_DM9161_INTR_INIT 0x0000
+#define MII_DM9161_INTR_STOP \
+(MII_DM9161_INTR_DPLX_MASK | MII_DM9161_INTR_SPD_MASK \
+ | MII_DM9161_INTR_LINK_MASK | MII_DM9161_INTR_MASK)
+
+/* DM9161 10BT Configuration/Status */
+#define MII_DM9161_10BTCSR 0x12
+#define MII_DM9161_10BTCSR_INIT 0x7800
+
+MODULE_DESCRIPTION("Davicom PHY driver");
+MODULE_AUTHOR("Andy Fleming");
+MODULE_LICENSE("GPL");
+
+
+static int dm9161_config_aneg(struct phy_device *phydev)
+{
+ int err;
+
+ /* Isolate the PHY */
+ err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
+
+ if (err < 0)
+ return err;
+
+ /* Configure the new settings */
+ err = genphy_config_aneg(phydev);
+
+ if (err < 0)
+ return err;
+
+ return 0;
+}
+
+static int dm9161_config_init(struct phy_device *phydev)
+{
+ int err, temp;
+
+ /* Isolate the PHY */
+ err = phy_write(phydev, MII_BMCR, BMCR_ISOLATE);
+
+ if (err < 0)
+ return err;
+
+ switch (phydev->interface) {
+ case PHY_INTERFACE_MODE_MII:
+ temp = MII_DM9161_SCR_INIT;
+ break;
+ case PHY_INTERFACE_MODE_RMII:
+ temp = MII_DM9161_SCR_INIT | MII_DM9161_SCR_RMII;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* Do not bypass the scrambler/descrambler */
+ err = phy_write(phydev, MII_DM9161_SCR, temp);
+ if (err < 0)
+ return err;
+
+ /* Clear 10BTCSR to default */
+ err = phy_write(phydev, MII_DM9161_10BTCSR, MII_DM9161_10BTCSR_INIT);
+
+ if (err < 0)
+ return err;
+
+ /* Reconnect the PHY, and enable Autonegotiation */
+ return phy_write(phydev, MII_BMCR, BMCR_ANENABLE);
+}
+
+static struct phy_driver dm91xx_driver[] = {
+{
+ .phy_id = 0x0181b880,
+ .drv.name = "Davicom DM9161E",
+ .phy_id_mask = 0x0ffffff0,
+ .features = PHY_BASIC_FEATURES,
+ .config_init = dm9161_config_init,
+ .config_aneg = dm9161_config_aneg,
+}, {
+ .phy_id = 0x0181b8b0,
+ .drv.name = "Davicom DM9161B/C",
+ .phy_id_mask = 0x0ffffff0,
+ .features = PHY_BASIC_FEATURES,
+ .config_init = dm9161_config_init,
+ .config_aneg = dm9161_config_aneg,
+}, {
+ .phy_id = 0x0181b8a0,
+ .drv.name = "Davicom DM9161A",
+ .phy_id_mask = 0x0ffffff0,
+ .features = PHY_BASIC_FEATURES,
+ .config_init = dm9161_config_init,
+ .config_aneg = dm9161_config_aneg,
+}, {
+ .phy_id = 0x00181b80,
+ .drv.name = "Davicom DM9131",
+ .phy_id_mask = 0x0ffffff0,
+ .features = PHY_BASIC_FEATURES,
+} };
+
+static int dm9161_init(void)
+{
+ return phy_drivers_register(dm91xx_driver,
+ ARRAY_SIZE(dm91xx_driver));
+}
+fs_initcall(dm9161_init);
--
2.12.0
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