summaryrefslogtreecommitdiffstats
path: root/drivers/net/phy/et1011c.c
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/phy/et1011c.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/phy/et1011c.c')
-rw-r--r--drivers/net/phy/et1011c.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/drivers/net/phy/et1011c.c b/drivers/net/phy/et1011c.c
new file mode 100644
index 000000000..be1b71d7c
--- /dev/null
+++ b/drivers/net/phy/et1011c.c
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * drivers/net/phy/et1011c.c
+ *
+ * Driver for LSI ET1011C PHYs
+ *
+ * Author: Chaithrika U S
+ *
+ * Copyright (c) 2008 Texas Instruments
+ */
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/errno.h>
+#include <linux/unistd.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/spinlock.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/mii.h>
+#include <linux/ethtool.h>
+#include <linux/phy.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <asm/irq.h>
+
+#define ET1011C_STATUS_REG (0x1A)
+#define ET1011C_CONFIG_REG (0x16)
+#define ET1011C_SPEED_MASK (0x0300)
+#define ET1011C_GIGABIT_SPEED (0x0200)
+#define ET1011C_TX_FIFO_MASK (0x3000)
+#define ET1011C_TX_FIFO_DEPTH_8 (0x0000)
+#define ET1011C_TX_FIFO_DEPTH_16 (0x1000)
+#define ET1011C_INTERFACE_MASK (0x0007)
+#define ET1011C_GMII_INTERFACE (0x0002)
+#define ET1011C_SYS_CLK_EN (0x01 << 4)
+
+
+MODULE_DESCRIPTION("LSI ET1011C PHY driver");
+MODULE_AUTHOR("Chaithrika U S");
+MODULE_LICENSE("GPL");
+
+static int et1011c_config_aneg(struct phy_device *phydev)
+{
+ int ctl = phy_read(phydev, MII_BMCR);
+
+ if (ctl < 0)
+ return ctl;
+ ctl &= ~(BMCR_FULLDPLX | BMCR_SPEED100 | BMCR_SPEED1000 |
+ BMCR_ANENABLE);
+ /* First clear the PHY */
+ phy_write(phydev, MII_BMCR, ctl | BMCR_RESET);
+
+ return genphy_config_aneg(phydev);
+}
+
+static int et1011c_read_status(struct phy_device *phydev)
+{
+ static int speed;
+ int ret;
+ u32 val;
+
+ ret = genphy_read_status(phydev);
+
+ if (speed != phydev->speed) {
+ speed = phydev->speed;
+ val = phy_read(phydev, ET1011C_STATUS_REG);
+ if ((val & ET1011C_SPEED_MASK) ==
+ ET1011C_GIGABIT_SPEED) {
+ val = phy_read(phydev, ET1011C_CONFIG_REG);
+ val &= ~ET1011C_TX_FIFO_MASK;
+ phy_write(phydev, ET1011C_CONFIG_REG, val |
+ ET1011C_GMII_INTERFACE |
+ ET1011C_SYS_CLK_EN |
+ ET1011C_TX_FIFO_DEPTH_16);
+
+ }
+ }
+ return ret;
+}
+
+static struct phy_driver et1011c_driver[] = { {
+ .phy_id = 0x0282f014,
+ .name = "ET1011C",
+ .phy_id_mask = 0xfffffff0,
+ /* PHY_GBIT_FEATURES */
+ .config_aneg = et1011c_config_aneg,
+ .read_status = et1011c_read_status,
+} };
+
+module_phy_driver(et1011c_driver);
+
+static struct mdio_device_id __maybe_unused et1011c_tbl[] = {
+ { 0x0282f014, 0xfffffff0 },
+ { }
+};
+
+MODULE_DEVICE_TABLE(mdio, et1011c_tbl);