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Message-Id: <1350049656-22766-1-git-send-email-ujhelyi.m@gmail.com>
Date: Fri, 12 Oct 2012 15:47:36 +0200
From: ujhelyi.m@...il.com
To: netdev@...r.kernel.org
Cc: davem@...emloft.net, daniel@...que.org, rd@...ekdostal.com,
Matus Ujhelyi <ujhelyi.m@...il.com>
Subject: [PATCH] phy: add AT803x driver
From: Matus Ujhelyi <ujhelyi.m@...il.com>
This driver add support for wake over lan on AT803x phys.
Signed-off-by: Matus Ujhelyi <ujhelyi.m@...il.com>
---
drivers/net/phy/Kconfig | 5 ++
drivers/net/phy/Makefile | 1 +
drivers/net/phy/at803x.c | 176 ++++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 182 insertions(+)
create mode 100644 drivers/net/phy/at803x.c
diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 3090dc6..e69d74e 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -15,6 +15,11 @@ if PHYLIB
comment "MII PHY device drivers"
+config AT803X_PHY
+ tristate "Drivers for Atheros PHYs"
+ ---help---
+ Currently supports the AT8030 and AT8035 model
+
config AMD_PHY
tristate "Drivers for the AMD PHYs"
---help---
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index 6d2dc6c..66720a5 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_STE10XP) += ste10Xp.o
obj-$(CONFIG_MICREL_PHY) += micrel.o
obj-$(CONFIG_MDIO_OCTEON) += mdio-octeon.o
obj-$(CONFIG_MICREL_KS8995MA) += spi_ks8995.o
+obj-$(CONFIG_AT803X_PHY) += at803x.o
obj-$(CONFIG_AMD_PHY) += amd.o
obj-$(CONFIG_MDIO_BUS_MUX) += mdio-mux.o
obj-$(CONFIG_MDIO_BUS_MUX_GPIO) += mdio-mux-gpio.o
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
new file mode 100644
index 0000000..45cbc10
--- /dev/null
+++ b/drivers/net/phy/at803x.c
@@ -0,0 +1,176 @@
+/*
+ * drivers/net/phy/at803x.c
+ *
+ * Driver for Atheros 803x PHY
+ *
+ * Author: Matus Ujhelyi <ujhelyi.m@...il.com>
+ *
+ * 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/phy.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+
+#define AT803X_INTR_ENABLE 0x12
+#define AT803X_INTR_STATUS 0x13
+#define AT803X_WOL_ENABLE 0x01
+#define AT803X_DEVICE_ADDR 0x03
+#define AT803X_LOC_MAC_ADDR_0_15_OFFSET 0x804C
+#define AT803X_LOC_MAC_ADDR_16_31_OFFSET 0x804B
+#define AT803X_LOC_MAC_ADDR_32_47_OFFSET 0x804A
+#define AT803X_MMD_ACCESS_CONTROL 0x0D
+#define AT803X_MMD_ACCESS_CONTROL_DATA 0x0E
+#define AT803X_FUNC_DATA 0x4003
+
+MODULE_DESCRIPTION("Atheros 803x PHY driver");
+MODULE_AUTHOR("Matus Ujhelyi");
+MODULE_LICENSE("GPL");
+
+static void at803x_set_wol_mac_addr(struct phy_device *phydev)
+{
+ struct net_device *ndev = phydev->attached_dev;
+ const u8 *mac;
+ unsigned int i, offsets[] = {
+ AT803X_LOC_MAC_ADDR_32_47_OFFSET,
+ AT803X_LOC_MAC_ADDR_16_31_OFFSET,
+ AT803X_LOC_MAC_ADDR_0_15_OFFSET,
+ };
+
+ if (!ndev)
+ return;
+
+ mac = (const u8 *) ndev->dev_addr;
+
+ if (!is_valid_ether_addr(mac))
+ return;
+
+ for (i = 0; i < 3; i++) {
+ phy_write(phydev, AT803X_MMD_ACCESS_CONTROL,
+ AT803X_DEVICE_ADDR);
+ phy_write(phydev, AT803X_MMD_ACCESS_CONTROL_DATA,
+ offsets[i]);
+ phy_write(phydev, AT803X_MMD_ACCESS_CONTROL,
+ AT803X_FUNC_DATA);
+ phy_write(phydev, AT803X_MMD_ACCESS_CONTROL_DATA,
+ mac[(i * 2) + 1] | (mac[(i * 2)] << 8));
+ }
+}
+
+static int at803x_config_init(struct phy_device *phydev)
+{
+ int val;
+ u32 features;
+ int status;
+
+ features = SUPPORTED_TP | SUPPORTED_MII | SUPPORTED_AUI |
+ SUPPORTED_FIBRE | SUPPORTED_BNC;
+
+ val = phy_read(phydev, MII_BMSR);
+ if (val < 0)
+ return val;
+
+ if (val & BMSR_ANEGCAPABLE)
+ features |= SUPPORTED_Autoneg;
+ if (val & BMSR_100FULL)
+ features |= SUPPORTED_100baseT_Full;
+ if (val & BMSR_100HALF)
+ features |= SUPPORTED_100baseT_Half;
+ if (val & BMSR_10FULL)
+ features |= SUPPORTED_10baseT_Full;
+ if (val & BMSR_10HALF)
+ features |= SUPPORTED_10baseT_Half;
+
+ if (val & BMSR_ESTATEN) {
+ val = phy_read(phydev, MII_ESTATUS);
+ if (val < 0)
+ return val;
+
+ if (val & ESTATUS_1000_TFULL)
+ features |= SUPPORTED_1000baseT_Full;
+ if (val & ESTATUS_1000_THALF)
+ features |= SUPPORTED_1000baseT_Half;
+ }
+
+ phydev->supported = features;
+ phydev->advertising = features;
+
+ /* enable WOL */
+ at803x_set_wol_mac_addr(phydev);
+ status = phy_write(phydev, AT803X_INTR_ENABLE, AT803X_WOL_ENABLE);
+ status = phy_read(phydev, AT803X_INTR_STATUS);
+
+ return 0;
+}
+
+/* ATHEROS 8035 */
+static struct phy_driver at8035_driver = {
+ .phy_id = 0x004dd072,
+ .name = "Atheros 8035 ethernet",
+ .phy_id_mask = 0xffffffef,
+ .config_init = at803x_config_init,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_aneg = &genphy_config_aneg,
+ .read_status = &genphy_read_status,
+ .driver = {
+ .owner = THIS_MODULE,
+ },
+};
+
+/* ATHEROS 8030 */
+static struct phy_driver at8030_driver = {
+ .phy_id = 0x004dd076,
+ .name = "Atheros 8030 ethernet",
+ .phy_id_mask = 0xffffffef,
+ .config_init = at803x_config_init,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_aneg = &genphy_config_aneg,
+ .read_status = &genphy_read_status,
+ .driver = {
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init atheros_init(void)
+{
+ int ret;
+
+ ret = phy_driver_register(&at8035_driver);
+ if (ret)
+ goto err1;
+
+ ret = phy_driver_register(&at8030_driver);
+ if (ret)
+ goto err2;
+
+ return 0;
+
+err2:
+ phy_driver_unregister(&at8035_driver);
+err1:
+ return ret;
+}
+
+static void __exit atheros_exit(void)
+{
+ phy_driver_unregister(&at8035_driver);
+ phy_driver_unregister(&at8030_driver);
+}
+
+module_init(atheros_init);
+module_exit(atheros_exit);
+
+static struct mdio_device_id __maybe_unused atheros_tbl[] = {
+ { 0x004dd076, 0xffffffef },
+ { 0x004dd072, 0xffffffef },
+ { }
+};
+
+MODULE_DEVICE_TABLE(mdio, atheros_tbl);
--
1.7.9.5
--
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