v4.19.13 snapshot.
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
new file mode 100644
index 0000000..271e8ad
--- /dev/null
+++ b/drivers/net/phy/realtek.c
@@ -0,0 +1,320 @@
+/*
+ * drivers/net/phy/realtek.c
+ *
+ * Driver for Realtek PHYs
+ *
+ * Author: Johnson Leung <r58129@freescale.com>
+ *
+ * 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 <linux/bitops.h>
+#include <linux/phy.h>
+#include <linux/module.h>
+
+#define RTL821x_PHYSR 0x11
+#define RTL821x_PHYSR_DUPLEX BIT(13)
+#define RTL821x_PHYSR_SPEED GENMASK(15, 14)
+
+#define RTL821x_INER 0x12
+#define RTL8211B_INER_INIT 0x6400
+#define RTL8211E_INER_LINK_STATUS BIT(10)
+#define RTL8211F_INER_LINK_STATUS BIT(4)
+
+#define RTL821x_INSR 0x13
+
+#define RTL821x_PAGE_SELECT 0x1f
+
+#define RTL8211F_INSR 0x1d
+
+#define RTL8211F_TX_DELAY BIT(8)
+
+#define RTL8201F_ISR 0x1e
+#define RTL8201F_IER 0x13
+
+#define RTL8366RB_POWER_SAVE 0x15
+#define RTL8366RB_POWER_SAVE_ON BIT(12)
+
+MODULE_DESCRIPTION("Realtek PHY driver");
+MODULE_AUTHOR("Johnson Leung");
+MODULE_LICENSE("GPL");
+
+static int rtl821x_read_page(struct phy_device *phydev)
+{
+ return __phy_read(phydev, RTL821x_PAGE_SELECT);
+}
+
+static int rtl821x_write_page(struct phy_device *phydev, int page)
+{
+ return __phy_write(phydev, RTL821x_PAGE_SELECT, page);
+}
+
+static int rtl8201_ack_interrupt(struct phy_device *phydev)
+{
+ int err;
+
+ err = phy_read(phydev, RTL8201F_ISR);
+
+ return (err < 0) ? err : 0;
+}
+
+static int rtl821x_ack_interrupt(struct phy_device *phydev)
+{
+ int err;
+
+ err = phy_read(phydev, RTL821x_INSR);
+
+ return (err < 0) ? err : 0;
+}
+
+static int rtl8211f_ack_interrupt(struct phy_device *phydev)
+{
+ int err;
+
+ err = phy_read_paged(phydev, 0xa43, RTL8211F_INSR);
+
+ return (err < 0) ? err : 0;
+}
+
+static int rtl8201_config_intr(struct phy_device *phydev)
+{
+ u16 val;
+
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+ val = BIT(13) | BIT(12) | BIT(11);
+ else
+ val = 0;
+
+ return phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
+}
+
+static int rtl8211b_config_intr(struct phy_device *phydev)
+{
+ int err;
+
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+ err = phy_write(phydev, RTL821x_INER,
+ RTL8211B_INER_INIT);
+ else
+ err = phy_write(phydev, RTL821x_INER, 0);
+
+ return err;
+}
+
+static int rtl8211e_config_intr(struct phy_device *phydev)
+{
+ int err;
+
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+ err = phy_write(phydev, RTL821x_INER,
+ RTL8211E_INER_LINK_STATUS);
+ else
+ err = phy_write(phydev, RTL821x_INER, 0);
+
+ return err;
+}
+
+static int rtl8211f_config_intr(struct phy_device *phydev)
+{
+ u16 val;
+
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED)
+ val = RTL8211F_INER_LINK_STATUS;
+ else
+ val = 0;
+
+ return phy_write_paged(phydev, 0xa42, RTL821x_INER, val);
+}
+
+static int rtl8211_config_aneg(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = genphy_config_aneg(phydev);
+ if (ret < 0)
+ return ret;
+
+ /* Quirk was copied from vendor driver. Unfortunately it includes no
+ * description of the magic numbers.
+ */
+ if (phydev->speed == SPEED_100 && phydev->autoneg == AUTONEG_DISABLE) {
+ phy_write(phydev, 0x17, 0x2138);
+ phy_write(phydev, 0x0e, 0x0260);
+ } else {
+ phy_write(phydev, 0x17, 0x2108);
+ phy_write(phydev, 0x0e, 0x0000);
+ }
+
+ return 0;
+}
+
+static int rtl8211c_config_init(struct phy_device *phydev)
+{
+ /* RTL8211C has an issue when operating in Gigabit slave mode */
+ phy_set_bits(phydev, MII_CTRL1000,
+ CTL1000_ENABLE_MASTER | CTL1000_AS_MASTER);
+
+ return genphy_config_init(phydev);
+}
+
+static int rtl8211f_config_init(struct phy_device *phydev)
+{
+ int ret;
+ u16 val = 0;
+
+ ret = genphy_config_init(phydev);
+ if (ret < 0)
+ return ret;
+
+ /* enable TX-delay for rgmii-id and rgmii-txid, otherwise disable it */
+ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID ||
+ phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID)
+ val = RTL8211F_TX_DELAY;
+
+ return phy_modify_paged(phydev, 0xd08, 0x11, RTL8211F_TX_DELAY, val);
+}
+
+static int rtl8211b_suspend(struct phy_device *phydev)
+{
+ phy_write(phydev, MII_MMD_DATA, BIT(9));
+
+ return genphy_suspend(phydev);
+}
+
+static int rtl8211b_resume(struct phy_device *phydev)
+{
+ phy_write(phydev, MII_MMD_DATA, 0);
+
+ return genphy_resume(phydev);
+}
+
+static int rtl8366rb_config_init(struct phy_device *phydev)
+{
+ int ret;
+
+ ret = genphy_config_init(phydev);
+ if (ret < 0)
+ return ret;
+
+ ret = phy_set_bits(phydev, RTL8366RB_POWER_SAVE,
+ RTL8366RB_POWER_SAVE_ON);
+ if (ret) {
+ dev_err(&phydev->mdio.dev,
+ "error enabling power management\n");
+ }
+
+ return ret;
+}
+
+static struct phy_driver realtek_drvs[] = {
+ {
+ .phy_id = 0x00008201,
+ .name = "RTL8201CP Ethernet",
+ .phy_id_mask = 0x0000ffff,
+ .features = PHY_BASIC_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ }, {
+ .phy_id = 0x001cc816,
+ .name = "RTL8201F Fast Ethernet",
+ .phy_id_mask = 0x001fffff,
+ .features = PHY_BASIC_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .ack_interrupt = &rtl8201_ack_interrupt,
+ .config_intr = &rtl8201_config_intr,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ .read_page = rtl821x_read_page,
+ .write_page = rtl821x_write_page,
+ }, {
+ .phy_id = 0x001cc910,
+ .name = "RTL8211 Gigabit Ethernet",
+ .phy_id_mask = 0x001fffff,
+ .features = PHY_GBIT_FEATURES,
+ .config_aneg = rtl8211_config_aneg,
+ .read_mmd = &genphy_read_mmd_unsupported,
+ .write_mmd = &genphy_write_mmd_unsupported,
+ }, {
+ .phy_id = 0x001cc912,
+ .name = "RTL8211B Gigabit Ethernet",
+ .phy_id_mask = 0x001fffff,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .ack_interrupt = &rtl821x_ack_interrupt,
+ .config_intr = &rtl8211b_config_intr,
+ .read_mmd = &genphy_read_mmd_unsupported,
+ .write_mmd = &genphy_write_mmd_unsupported,
+ .suspend = rtl8211b_suspend,
+ .resume = rtl8211b_resume,
+ }, {
+ .phy_id = 0x001cc913,
+ .name = "RTL8211C Gigabit Ethernet",
+ .phy_id_mask = 0x001fffff,
+ .features = PHY_GBIT_FEATURES,
+ .config_init = rtl8211c_config_init,
+ .read_mmd = &genphy_read_mmd_unsupported,
+ .write_mmd = &genphy_write_mmd_unsupported,
+ }, {
+ .phy_id = 0x001cc914,
+ .name = "RTL8211DN Gigabit Ethernet",
+ .phy_id_mask = 0x001fffff,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .ack_interrupt = rtl821x_ack_interrupt,
+ .config_intr = rtl8211e_config_intr,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ }, {
+ .phy_id = 0x001cc915,
+ .name = "RTL8211E Gigabit Ethernet",
+ .phy_id_mask = 0x001fffff,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .ack_interrupt = &rtl821x_ack_interrupt,
+ .config_intr = &rtl8211e_config_intr,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ }, {
+ .phy_id = 0x001cc916,
+ .name = "RTL8211F Gigabit Ethernet",
+ .phy_id_mask = 0x001fffff,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &rtl8211f_config_init,
+ .ack_interrupt = &rtl8211f_ack_interrupt,
+ .config_intr = &rtl8211f_config_intr,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ .read_page = rtl821x_read_page,
+ .write_page = rtl821x_write_page,
+ }, {
+ .phy_id = 0x001cc961,
+ .name = "RTL8366RB Gigabit Ethernet",
+ .phy_id_mask = 0x001fffff,
+ .features = PHY_GBIT_FEATURES,
+ .flags = PHY_HAS_INTERRUPT,
+ .config_init = &rtl8366rb_config_init,
+ .suspend = genphy_suspend,
+ .resume = genphy_resume,
+ },
+};
+
+module_phy_driver(realtek_drvs);
+
+static struct mdio_device_id __maybe_unused realtek_tbl[] = {
+ { 0x001cc816, 0x001fffff },
+ { 0x001cc910, 0x001fffff },
+ { 0x001cc912, 0x001fffff },
+ { 0x001cc913, 0x001fffff },
+ { 0x001cc914, 0x001fffff },
+ { 0x001cc915, 0x001fffff },
+ { 0x001cc916, 0x001fffff },
+ { 0x001cc961, 0x001fffff },
+ { }
+};
+
+MODULE_DEVICE_TABLE(mdio, realtek_tbl);