[PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[Johan Hovold]

The recently added Realtek PHY drivers depend on the new port status
notification mechanism which was built on the deprecated USB PHY
implementation and devicetree binding.

Specifically, using these PHYs would require describing the very same
PHY using both the generic "phy" property and the deprecated "usb-phy"
property which is clearly wrong.

We should not be building new functionality on top of the legacy USB PHY
implementation even if it is currently stuck in some kind of
transitional limbo.

Revert the new Realtek PHY drivers for now so that the port status
notification interface can be reverted and replaced before we dig
ourselves into an even deeper hole with this PHY mess.

Note that there are no upstream users of these PHYs and the drivers were
only included in 6.6 so there should still be time to undo this.

Preferably these should go in through Greg's tree for 6.7-rc1.

Johan


Johan Hovold (3):
  Revert "phy: realtek: usb: Add driver for the Realtek SoC USB 3.0 PHY"
  Revert "phy: realtek: usb: Add driver for the Realtek SoC USB 2.0 PHY"
  Revert "usb: phy: add usb phy notify port status API"

 drivers/phy/Kconfig                |    1 -
 drivers/phy/Makefile               |    1 -
 drivers/phy/realtek/Kconfig        |   32 -
 drivers/phy/realtek/Makefile       |    3 -
 drivers/phy/realtek/phy-rtk-usb2.c | 1325 ----------------------------
 drivers/phy/realtek/phy-rtk-usb3.c |  761 ----------------
 drivers/usb/core/hub.c             |   23 -
 include/linux/usb/phy.h            |   13 -
 8 files changed, 2159 deletions(-)
 delete mode 100644 drivers/phy/realtek/Kconfig
 delete mode 100644 drivers/phy/realtek/Makefile
 delete mode 100644 drivers/phy/realtek/phy-rtk-usb2.c
 delete mode 100644 drivers/phy/realtek/phy-rtk-usb3.c

-- 
2.41.0

[PATCH 1/3] Revert "phy: realtek: usb: Add driver for the Realtek SoC USB 3.0 PHY"

[Johan Hovold]

This reverts commit adda6e82a7de7d6d478f6c8ef127f0ac51c510a1.

The recently added Realtek PHY drivers depend on the new port status
notification mechanism which was built on the deprecated USB PHY
implementation and devicetree binding.

Specifically, using these PHYs would require describing the very same
PHY using both the generic "phy" property and the deprecated "usb-phy"
property which is clearly wrong.

We should not be building new functionality on top of the legacy USB PHY
implementation even if it is currently stuck in some kind of
transitional limbo.

Revert the new Realtek PHY drivers for now so that the port status
notification interface can be reverted and replaced.

Fixes: adda6e82a7de ("phy: realtek: usb: Add driver for the Realtek SoC USB 3.0 PHY")
Cc: stable@vger.kernel.org	# 6.6
Cc: Stanley Chang <stanley_chang@realtek.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/realtek/Kconfig        |  12 -
 drivers/phy/realtek/Makefile       |   1 -
 drivers/phy/realtek/phy-rtk-usb3.c | 761 -----------------------------
 3 files changed, 774 deletions(-)
 delete mode 100644 drivers/phy/realtek/phy-rtk-usb3.c

diff --git a/drivers/phy/realtek/Kconfig b/drivers/phy/realtek/Kconfig
index 75ac7e7c31ae..745587751070 100644
--- a/drivers/phy/realtek/Kconfig
+++ b/drivers/phy/realtek/Kconfig
@@ -17,16 +17,4 @@ config PHY_RTK_RTD_USB2PHY
 	  DWC3 USB IP. This driver will do the PHY initialization
 	  of the parameters.
 
-config PHY_RTK_RTD_USB3PHY
-	tristate "Realtek RTD USB3 PHY Transceiver Driver"
-	depends on USB_SUPPORT
-	select GENERIC_PHY
-	select USB_PHY
-	select USB_COMMON
-	help
-	  Enable this to support Realtek SoC USB3 phy transceiver.
-	  The DHC (digital home center) RTD series SoCs used the Synopsys
-	  DWC3 USB IP. This driver will do the PHY initialization
-	  of the parameters.
-
 endif # ARCH_REALTEK || COMPILE_TEST
diff --git a/drivers/phy/realtek/Makefile b/drivers/phy/realtek/Makefile
index ed7b47ff8a26..cf5d440841a2 100644
--- a/drivers/phy/realtek/Makefile
+++ b/drivers/phy/realtek/Makefile
@@ -1,3 +1,2 @@
 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_PHY_RTK_RTD_USB2PHY)	+= phy-rtk-usb2.o
-obj-$(CONFIG_PHY_RTK_RTD_USB3PHY)	+= phy-rtk-usb3.o
diff --git a/drivers/phy/realtek/phy-rtk-usb3.c b/drivers/phy/realtek/phy-rtk-usb3.c
deleted file mode 100644
index dfb3122f3f11..000000000000
--- a/drivers/phy/realtek/phy-rtk-usb3.c
+++ /dev/null
@@ -1,761 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  phy-rtk-usb3.c RTK usb3.0 phy driver
- *
- * copyright (c) 2023 realtek semiconductor corporation
- *
- */
-
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_address.h>
-#include <linux/uaccess.h>
-#include <linux/debugfs.h>
-#include <linux/nvmem-consumer.h>
-#include <linux/regmap.h>
-#include <linux/sys_soc.h>
-#include <linux/mfd/syscon.h>
-#include <linux/phy/phy.h>
-#include <linux/usb.h>
-#include <linux/usb/hcd.h>
-#include <linux/usb/phy.h>
-
-#define USB_MDIO_CTRL_PHY_BUSY BIT(7)
-#define USB_MDIO_CTRL_PHY_WRITE BIT(0)
-#define USB_MDIO_CTRL_PHY_ADDR_SHIFT 8
-#define USB_MDIO_CTRL_PHY_DATA_SHIFT 16
-
-#define MAX_USB_PHY_DATA_SIZE 0x30
-#define PHY_ADDR_0X09 0x09
-#define PHY_ADDR_0X0B 0x0b
-#define PHY_ADDR_0X0D 0x0d
-#define PHY_ADDR_0X10 0x10
-#define PHY_ADDR_0X1F 0x1f
-#define PHY_ADDR_0X20 0x20
-#define PHY_ADDR_0X21 0x21
-#define PHY_ADDR_0X30 0x30
-
-#define REG_0X09_FORCE_CALIBRATION BIT(9)
-#define REG_0X0B_RX_OFFSET_RANGE_MASK 0xc
-#define REG_0X0D_RX_DEBUG_TEST_EN BIT(6)
-#define REG_0X10_DEBUG_MODE_SETTING 0x3c0
-#define REG_0X10_DEBUG_MODE_SETTING_MASK 0x3f8
-#define REG_0X1F_RX_OFFSET_CODE_MASK 0x1e
-
-#define USB_U3_TX_LFPS_SWING_TRIM_SHIFT 4
-#define USB_U3_TX_LFPS_SWING_TRIM_MASK 0xf
-#define AMPLITUDE_CONTROL_COARSE_MASK 0xff
-#define AMPLITUDE_CONTROL_FINE_MASK 0xffff
-#define AMPLITUDE_CONTROL_COARSE_DEFAULT 0xff
-#define AMPLITUDE_CONTROL_FINE_DEFAULT 0xffff
-
-#define PHY_ADDR_MAP_ARRAY_INDEX(addr) (addr)
-#define ARRAY_INDEX_MAP_PHY_ADDR(index) (index)
-
-struct phy_reg {
-	void __iomem *reg_mdio_ctl;
-};
-
-struct phy_data {
-	u8 addr;
-	u16 data;
-};
-
-struct phy_cfg {
-	int param_size;
-	struct phy_data param[MAX_USB_PHY_DATA_SIZE];
-
-	bool check_efuse;
-	bool do_toggle;
-	bool do_toggle_once;
-	bool use_default_parameter;
-	bool check_rx_front_end_offset;
-};
-
-struct phy_parameter {
-	struct phy_reg phy_reg;
-
-	/* Get from efuse */
-	u8 efuse_usb_u3_tx_lfps_swing_trim;
-
-	/* Get from dts */
-	u32 amplitude_control_coarse;
-	u32 amplitude_control_fine;
-};
-
-struct rtk_phy {
-	struct usb_phy phy;
-	struct device *dev;
-
-	struct phy_cfg *phy_cfg;
-	int num_phy;
-	struct phy_parameter *phy_parameter;
-
-	struct dentry *debug_dir;
-};
-
-#define PHY_IO_TIMEOUT_USEC		(50000)
-#define PHY_IO_DELAY_US			(100)
-
-static inline int utmi_wait_register(void __iomem *reg, u32 mask, u32 result)
-{
-	int ret;
-	unsigned int val;
-
-	ret = read_poll_timeout(readl, val, ((val & mask) == result),
-				PHY_IO_DELAY_US, PHY_IO_TIMEOUT_USEC, false, reg);
-	if (ret) {
-		pr_err("%s can't program USB phy\n", __func__);
-		return -ETIMEDOUT;
-	}
-
-	return 0;
-}
-
-static int rtk_phy3_wait_vbusy(struct phy_reg *phy_reg)
-{
-	return utmi_wait_register(phy_reg->reg_mdio_ctl, USB_MDIO_CTRL_PHY_BUSY, 0);
-}
-
-static u16 rtk_phy_read(struct phy_reg *phy_reg, char addr)
-{
-	unsigned int tmp;
-	u32 value;
-
-	tmp = (addr << USB_MDIO_CTRL_PHY_ADDR_SHIFT);
-
-	writel(tmp, phy_reg->reg_mdio_ctl);
-
-	rtk_phy3_wait_vbusy(phy_reg);
-
-	value = readl(phy_reg->reg_mdio_ctl);
-	value = value >> USB_MDIO_CTRL_PHY_DATA_SHIFT;
-
-	return (u16)value;
-}
-
-static int rtk_phy_write(struct phy_reg *phy_reg, char addr, u16 data)
-{
-	unsigned int val;
-
-	val = USB_MDIO_CTRL_PHY_WRITE |
-		    (addr << USB_MDIO_CTRL_PHY_ADDR_SHIFT) |
-		    (data << USB_MDIO_CTRL_PHY_DATA_SHIFT);
-
-	writel(val, phy_reg->reg_mdio_ctl);
-
-	rtk_phy3_wait_vbusy(phy_reg);
-
-	return 0;
-}
-
-static void do_rtk_usb3_phy_toggle(struct rtk_phy *rtk_phy, int index, bool connect)
-{
-	struct phy_cfg *phy_cfg = rtk_phy->phy_cfg;
-	struct phy_reg *phy_reg;
-	struct phy_parameter *phy_parameter;
-	struct phy_data *phy_data;
-	u8 addr;
-	u16 data;
-	int i;
-
-	phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
-	phy_reg = &phy_parameter->phy_reg;
-
-	if (!phy_cfg->do_toggle)
-		return;
-
-	i = PHY_ADDR_MAP_ARRAY_INDEX(PHY_ADDR_0X09);
-	phy_data = phy_cfg->param + i;
-	addr = phy_data->addr;
-	data = phy_data->data;
-
-	if (!addr && !data) {
-		addr = PHY_ADDR_0X09;
-		data = rtk_phy_read(phy_reg, addr);
-		phy_data->addr = addr;
-		phy_data->data = data;
-	}
-
-	rtk_phy_write(phy_reg, addr, data & (~REG_0X09_FORCE_CALIBRATION));
-	mdelay(1);
-	rtk_phy_write(phy_reg, addr, data | REG_0X09_FORCE_CALIBRATION);
-}
-
-static int do_rtk_phy_init(struct rtk_phy *rtk_phy, int index)
-{
-	struct phy_cfg *phy_cfg;
-	struct phy_reg *phy_reg;
-	struct phy_parameter *phy_parameter;
-	int i = 0;
-
-	phy_cfg = rtk_phy->phy_cfg;
-	phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
-	phy_reg = &phy_parameter->phy_reg;
-
-	if (phy_cfg->use_default_parameter)
-		goto do_toggle;
-
-	for (i = 0; i < phy_cfg->param_size; i++) {
-		struct phy_data *phy_data = phy_cfg->param + i;
-		u8 addr = phy_data->addr;
-		u16 data = phy_data->data;
-
-		if (!addr && !data)
-			continue;
-
-		rtk_phy_write(phy_reg, addr, data);
-	}
-
-do_toggle:
-	if (phy_cfg->do_toggle_once)
-		phy_cfg->do_toggle = true;
-
-	do_rtk_usb3_phy_toggle(rtk_phy, index, false);
-
-	if (phy_cfg->do_toggle_once) {
-		u16 check_value = 0;
-		int count = 10;
-		u16 value_0x0d, value_0x10;
-
-		/* Enable Debug mode by set 0x0D and 0x10 */
-		value_0x0d = rtk_phy_read(phy_reg, PHY_ADDR_0X0D);
-		value_0x10 = rtk_phy_read(phy_reg, PHY_ADDR_0X10);
-
-		rtk_phy_write(phy_reg, PHY_ADDR_0X0D,
-			      value_0x0d | REG_0X0D_RX_DEBUG_TEST_EN);
-		rtk_phy_write(phy_reg, PHY_ADDR_0X10,
-			      (value_0x10 & ~REG_0X10_DEBUG_MODE_SETTING_MASK) |
-			      REG_0X10_DEBUG_MODE_SETTING);
-
-		check_value = rtk_phy_read(phy_reg, PHY_ADDR_0X30);
-
-		while (!(check_value & BIT(15))) {
-			check_value = rtk_phy_read(phy_reg, PHY_ADDR_0X30);
-			mdelay(1);
-			if (count-- < 0)
-				break;
-		}
-
-		if (!(check_value & BIT(15)))
-			dev_info(rtk_phy->dev, "toggle fail addr=0x%02x, data=0x%04x\n",
-				 PHY_ADDR_0X30, check_value);
-
-		/* Disable Debug mode by set 0x0D and 0x10 to default*/
-		rtk_phy_write(phy_reg, PHY_ADDR_0X0D, value_0x0d);
-		rtk_phy_write(phy_reg, PHY_ADDR_0X10, value_0x10);
-
-		phy_cfg->do_toggle = false;
-	}
-
-	if (phy_cfg->check_rx_front_end_offset) {
-		u16 rx_offset_code, rx_offset_range;
-		u16 code_mask = REG_0X1F_RX_OFFSET_CODE_MASK;
-		u16 range_mask = REG_0X0B_RX_OFFSET_RANGE_MASK;
-		bool do_update = false;
-
-		rx_offset_code = rtk_phy_read(phy_reg, PHY_ADDR_0X1F);
-		if (((rx_offset_code & code_mask) == 0x0) ||
-		    ((rx_offset_code & code_mask) == code_mask))
-			do_update = true;
-
-		rx_offset_range = rtk_phy_read(phy_reg, PHY_ADDR_0X0B);
-		if (((rx_offset_range & range_mask) == range_mask) && do_update) {
-			dev_warn(rtk_phy->dev, "Don't update rx_offset_range (rx_offset_code=0x%x, rx_offset_range=0x%x)\n",
-				 rx_offset_code, rx_offset_range);
-			do_update = false;
-		}
-
-		if (do_update) {
-			u16 tmp1, tmp2;
-
-			tmp1 = rx_offset_range & (~range_mask);
-			tmp2 = rx_offset_range & range_mask;
-			tmp2 += (1 << 2);
-			rx_offset_range = tmp1 | (tmp2 & range_mask);
-			rtk_phy_write(phy_reg, PHY_ADDR_0X0B, rx_offset_range);
-			goto do_toggle;
-		}
-	}
-
-	return 0;
-}
-
-static int rtk_phy_init(struct phy *phy)
-{
-	struct rtk_phy *rtk_phy = phy_get_drvdata(phy);
-	int ret = 0;
-	int i;
-	unsigned long phy_init_time = jiffies;
-
-	for (i = 0; i < rtk_phy->num_phy; i++)
-		ret = do_rtk_phy_init(rtk_phy, i);
-
-	dev_dbg(rtk_phy->dev, "Initialized RTK USB 3.0 PHY (take %dms)\n",
-		jiffies_to_msecs(jiffies - phy_init_time));
-
-	return ret;
-}
-
-static int rtk_phy_exit(struct phy *phy)
-{
-	return 0;
-}
-
-static const struct phy_ops ops = {
-	.init		= rtk_phy_init,
-	.exit		= rtk_phy_exit,
-	.owner		= THIS_MODULE,
-};
-
-static void rtk_phy_toggle(struct usb_phy *usb3_phy, bool connect, int port)
-{
-	int index = port;
-	struct rtk_phy *rtk_phy = NULL;
-
-	rtk_phy = dev_get_drvdata(usb3_phy->dev);
-
-	if (index > rtk_phy->num_phy) {
-		dev_err(rtk_phy->dev, "%s: The port=%d is not in usb phy (num_phy=%d)\n",
-			__func__, index, rtk_phy->num_phy);
-		return;
-	}
-
-	do_rtk_usb3_phy_toggle(rtk_phy, index, connect);
-}
-
-static int rtk_phy_notify_port_status(struct usb_phy *x, int port,
-				      u16 portstatus, u16 portchange)
-{
-	bool connect = false;
-
-	pr_debug("%s port=%d portstatus=0x%x portchange=0x%x\n",
-		 __func__, port, (int)portstatus, (int)portchange);
-	if (portstatus & USB_PORT_STAT_CONNECTION)
-		connect = true;
-
-	if (portchange & USB_PORT_STAT_C_CONNECTION)
-		rtk_phy_toggle(x, connect, port);
-
-	return 0;
-}
-
-#ifdef CONFIG_DEBUG_FS
-static struct dentry *create_phy_debug_root(void)
-{
-	struct dentry *phy_debug_root;
-
-	phy_debug_root = debugfs_lookup("phy", usb_debug_root);
-	if (!phy_debug_root)
-		phy_debug_root = debugfs_create_dir("phy", usb_debug_root);
-
-	return phy_debug_root;
-}
-
-static int rtk_usb3_parameter_show(struct seq_file *s, void *unused)
-{
-	struct rtk_phy *rtk_phy = s->private;
-	struct phy_cfg *phy_cfg;
-	int i, index;
-
-	phy_cfg = rtk_phy->phy_cfg;
-
-	seq_puts(s, "Property:\n");
-	seq_printf(s, "  check_efuse: %s\n",
-		   phy_cfg->check_efuse ? "Enable" : "Disable");
-	seq_printf(s, "  do_toggle: %s\n",
-		   phy_cfg->do_toggle ? "Enable" : "Disable");
-	seq_printf(s, "  do_toggle_once: %s\n",
-		   phy_cfg->do_toggle_once ? "Enable" : "Disable");
-	seq_printf(s, "  use_default_parameter: %s\n",
-		   phy_cfg->use_default_parameter ? "Enable" : "Disable");
-
-	for (index = 0; index < rtk_phy->num_phy; index++) {
-		struct phy_reg *phy_reg;
-		struct phy_parameter *phy_parameter;
-
-		phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
-		phy_reg = &phy_parameter->phy_reg;
-
-		seq_printf(s, "PHY %d:\n", index);
-
-		for (i = 0; i < phy_cfg->param_size; i++) {
-			struct phy_data *phy_data = phy_cfg->param + i;
-			u8 addr = ARRAY_INDEX_MAP_PHY_ADDR(i);
-			u16 data = phy_data->data;
-
-			if (!phy_data->addr && !data)
-				seq_printf(s, "  addr = 0x%02x, data = none   ==> read value = 0x%04x\n",
-					   addr, rtk_phy_read(phy_reg, addr));
-			else
-				seq_printf(s, "  addr = 0x%02x, data = 0x%04x ==> read value = 0x%04x\n",
-					   addr, data, rtk_phy_read(phy_reg, addr));
-		}
-
-		seq_puts(s, "PHY Property:\n");
-		seq_printf(s, "  efuse_usb_u3_tx_lfps_swing_trim: 0x%x\n",
-			   (int)phy_parameter->efuse_usb_u3_tx_lfps_swing_trim);
-		seq_printf(s, "  amplitude_control_coarse: 0x%x\n",
-			   (int)phy_parameter->amplitude_control_coarse);
-		seq_printf(s, "  amplitude_control_fine: 0x%x\n",
-			   (int)phy_parameter->amplitude_control_fine);
-	}
-
-	return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(rtk_usb3_parameter);
-
-static inline void create_debug_files(struct rtk_phy *rtk_phy)
-{
-	struct dentry *phy_debug_root = NULL;
-
-	phy_debug_root = create_phy_debug_root();
-
-	if (!phy_debug_root)
-		return;
-
-	rtk_phy->debug_dir = debugfs_create_dir(dev_name(rtk_phy->dev), phy_debug_root);
-
-	debugfs_create_file("parameter", 0444, rtk_phy->debug_dir, rtk_phy,
-			    &rtk_usb3_parameter_fops);
-
-	return;
-}
-
-static inline void remove_debug_files(struct rtk_phy *rtk_phy)
-{
-	debugfs_remove_recursive(rtk_phy->debug_dir);
-}
-#else
-static inline void create_debug_files(struct rtk_phy *rtk_phy) { }
-static inline void remove_debug_files(struct rtk_phy *rtk_phy) { }
-#endif /* CONFIG_DEBUG_FS */
-
-static int get_phy_data_by_efuse(struct rtk_phy *rtk_phy,
-				 struct phy_parameter *phy_parameter, int index)
-{
-	struct phy_cfg *phy_cfg = rtk_phy->phy_cfg;
-	u8 value = 0;
-	struct nvmem_cell *cell;
-
-	if (!phy_cfg->check_efuse)
-		goto out;
-
-	cell = nvmem_cell_get(rtk_phy->dev, "usb_u3_tx_lfps_swing_trim");
-	if (IS_ERR(cell)) {
-		dev_dbg(rtk_phy->dev, "%s no usb_u3_tx_lfps_swing_trim: %ld\n",
-			__func__, PTR_ERR(cell));
-	} else {
-		unsigned char *buf;
-		size_t buf_size;
-
-		buf = nvmem_cell_read(cell, &buf_size);
-		if (!IS_ERR(buf)) {
-			value = buf[0] & USB_U3_TX_LFPS_SWING_TRIM_MASK;
-			kfree(buf);
-		}
-		nvmem_cell_put(cell);
-	}
-
-	if (value > 0 && value < 0x8)
-		phy_parameter->efuse_usb_u3_tx_lfps_swing_trim = 0x8;
-	else
-		phy_parameter->efuse_usb_u3_tx_lfps_swing_trim = (u8)value;
-
-out:
-	return 0;
-}
-
-static void update_amplitude_control_value(struct rtk_phy *rtk_phy,
-					   struct phy_parameter *phy_parameter)
-{
-	struct phy_cfg *phy_cfg;
-	struct phy_reg *phy_reg;
-
-	phy_reg = &phy_parameter->phy_reg;
-	phy_cfg = rtk_phy->phy_cfg;
-
-	if (phy_parameter->amplitude_control_coarse != AMPLITUDE_CONTROL_COARSE_DEFAULT) {
-		u16 val_mask = AMPLITUDE_CONTROL_COARSE_MASK;
-		u16 data;
-
-		if (!phy_cfg->param[PHY_ADDR_0X20].addr && !phy_cfg->param[PHY_ADDR_0X20].data) {
-			phy_cfg->param[PHY_ADDR_0X20].addr = PHY_ADDR_0X20;
-			data = rtk_phy_read(phy_reg, PHY_ADDR_0X20);
-		} else {
-			data = phy_cfg->param[PHY_ADDR_0X20].data;
-		}
-
-		data &= (~val_mask);
-		data |= (phy_parameter->amplitude_control_coarse & val_mask);
-
-		phy_cfg->param[PHY_ADDR_0X20].data = data;
-	}
-
-	if (phy_parameter->efuse_usb_u3_tx_lfps_swing_trim) {
-		u8 efuse_val = phy_parameter->efuse_usb_u3_tx_lfps_swing_trim;
-		u16 val_mask = USB_U3_TX_LFPS_SWING_TRIM_MASK;
-		int val_shift = USB_U3_TX_LFPS_SWING_TRIM_SHIFT;
-		u16 data;
-
-		if (!phy_cfg->param[PHY_ADDR_0X20].addr && !phy_cfg->param[PHY_ADDR_0X20].data) {
-			phy_cfg->param[PHY_ADDR_0X20].addr = PHY_ADDR_0X20;
-			data = rtk_phy_read(phy_reg, PHY_ADDR_0X20);
-		} else {
-			data = phy_cfg->param[PHY_ADDR_0X20].data;
-		}
-
-		data &= ~(val_mask << val_shift);
-		data |= ((efuse_val & val_mask) << val_shift);
-
-		phy_cfg->param[PHY_ADDR_0X20].data = data;
-	}
-
-	if (phy_parameter->amplitude_control_fine != AMPLITUDE_CONTROL_FINE_DEFAULT) {
-		u16 val_mask = AMPLITUDE_CONTROL_FINE_MASK;
-
-		if (!phy_cfg->param[PHY_ADDR_0X21].addr && !phy_cfg->param[PHY_ADDR_0X21].data)
-			phy_cfg->param[PHY_ADDR_0X21].addr = PHY_ADDR_0X21;
-
-		phy_cfg->param[PHY_ADDR_0X21].data =
-			    phy_parameter->amplitude_control_fine & val_mask;
-	}
-}
-
-static int parse_phy_data(struct rtk_phy *rtk_phy)
-{
-	struct device *dev = rtk_phy->dev;
-	struct phy_parameter *phy_parameter;
-	int ret = 0;
-	int index;
-
-	rtk_phy->phy_parameter = devm_kzalloc(dev, sizeof(struct phy_parameter) *
-					      rtk_phy->num_phy, GFP_KERNEL);
-	if (!rtk_phy->phy_parameter)
-		return -ENOMEM;
-
-	for (index = 0; index < rtk_phy->num_phy; index++) {
-		phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
-
-		phy_parameter->phy_reg.reg_mdio_ctl = of_iomap(dev->of_node, 0) + index;
-
-		/* Amplitude control address 0x20 bit 0 to bit 7 */
-		if (of_property_read_u32(dev->of_node, "realtek,amplitude-control-coarse-tuning",
-					 &phy_parameter->amplitude_control_coarse))
-			phy_parameter->amplitude_control_coarse = AMPLITUDE_CONTROL_COARSE_DEFAULT;
-
-		/* Amplitude control address 0x21 bit 0 to bit 16 */
-		if (of_property_read_u32(dev->of_node, "realtek,amplitude-control-fine-tuning",
-					 &phy_parameter->amplitude_control_fine))
-			phy_parameter->amplitude_control_fine = AMPLITUDE_CONTROL_FINE_DEFAULT;
-
-		get_phy_data_by_efuse(rtk_phy, phy_parameter, index);
-
-		update_amplitude_control_value(rtk_phy, phy_parameter);
-	}
-
-	return ret;
-}
-
-static int rtk_usb3phy_probe(struct platform_device *pdev)
-{
-	struct rtk_phy *rtk_phy;
-	struct device *dev = &pdev->dev;
-	struct phy *generic_phy;
-	struct phy_provider *phy_provider;
-	const struct phy_cfg *phy_cfg;
-	int ret;
-
-	phy_cfg = of_device_get_match_data(dev);
-	if (!phy_cfg) {
-		dev_err(dev, "phy config are not assigned!\n");
-		return -EINVAL;
-	}
-
-	rtk_phy = devm_kzalloc(dev, sizeof(*rtk_phy), GFP_KERNEL);
-	if (!rtk_phy)
-		return -ENOMEM;
-
-	rtk_phy->dev			= &pdev->dev;
-	rtk_phy->phy.dev		= rtk_phy->dev;
-	rtk_phy->phy.label		= "rtk-usb3phy";
-	rtk_phy->phy.notify_port_status = rtk_phy_notify_port_status;
-
-	rtk_phy->phy_cfg = devm_kzalloc(dev, sizeof(*phy_cfg), GFP_KERNEL);
-
-	memcpy(rtk_phy->phy_cfg, phy_cfg, sizeof(*phy_cfg));
-
-	rtk_phy->num_phy = 1;
-
-	ret = parse_phy_data(rtk_phy);
-	if (ret)
-		goto err;
-
-	platform_set_drvdata(pdev, rtk_phy);
-
-	generic_phy = devm_phy_create(rtk_phy->dev, NULL, &ops);
-	if (IS_ERR(generic_phy))
-		return PTR_ERR(generic_phy);
-
-	phy_set_drvdata(generic_phy, rtk_phy);
-
-	phy_provider = devm_of_phy_provider_register(rtk_phy->dev, of_phy_simple_xlate);
-	if (IS_ERR(phy_provider))
-		return PTR_ERR(phy_provider);
-
-	ret = usb_add_phy_dev(&rtk_phy->phy);
-	if (ret)
-		goto err;
-
-	create_debug_files(rtk_phy);
-
-err:
-	return ret;
-}
-
-static void rtk_usb3phy_remove(struct platform_device *pdev)
-{
-	struct rtk_phy *rtk_phy = platform_get_drvdata(pdev);
-
-	remove_debug_files(rtk_phy);
-
-	usb_remove_phy(&rtk_phy->phy);
-}
-
-static const struct phy_cfg rtd1295_phy_cfg = {
-	.param_size = MAX_USB_PHY_DATA_SIZE,
-	.param = {  [0] = {0x01, 0x4008},  [1] = {0x01, 0xe046},
-		    [2] = {0x02, 0x6046},  [3] = {0x03, 0x2779},
-		    [4] = {0x04, 0x72f5},  [5] = {0x05, 0x2ad3},
-		    [6] = {0x06, 0x000e},  [7] = {0x07, 0x2e00},
-		    [8] = {0x08, 0x3591},  [9] = {0x09, 0x525c},
-		   [10] = {0x0a, 0xa600}, [11] = {0x0b, 0xa904},
-		   [12] = {0x0c, 0xc000}, [13] = {0x0d, 0xef1c},
-		   [14] = {0x0e, 0x2000}, [15] = {0x0f, 0x0000},
-		   [16] = {0x10, 0x000c}, [17] = {0x11, 0x4c00},
-		   [18] = {0x12, 0xfc00}, [19] = {0x13, 0x0c81},
-		   [20] = {0x14, 0xde01}, [21] = {0x15, 0x0000},
-		   [22] = {0x16, 0x0000}, [23] = {0x17, 0x0000},
-		   [24] = {0x18, 0x0000}, [25] = {0x19, 0x4004},
-		   [26] = {0x1a, 0x1260}, [27] = {0x1b, 0xff00},
-		   [28] = {0x1c, 0xcb00}, [29] = {0x1d, 0xa03f},
-		   [30] = {0x1e, 0xc2e0}, [31] = {0x1f, 0x2807},
-		   [32] = {0x20, 0x947a}, [33] = {0x21, 0x88aa},
-		   [34] = {0x22, 0x0057}, [35] = {0x23, 0xab66},
-		   [36] = {0x24, 0x0800}, [37] = {0x25, 0x0000},
-		   [38] = {0x26, 0x040a}, [39] = {0x27, 0x01d6},
-		   [40] = {0x28, 0xf8c2}, [41] = {0x29, 0x3080},
-		   [42] = {0x2a, 0x3082}, [43] = {0x2b, 0x2078},
-		   [44] = {0x2c, 0xffff}, [45] = {0x2d, 0xffff},
-		   [46] = {0x2e, 0x0000}, [47] = {0x2f, 0x0040}, },
-	.check_efuse = false,
-	.do_toggle = true,
-	.do_toggle_once = false,
-	.use_default_parameter = false,
-	.check_rx_front_end_offset = false,
-};
-
-static const struct phy_cfg rtd1619_phy_cfg = {
-	.param_size = MAX_USB_PHY_DATA_SIZE,
-	.param = {  [8] = {0x08, 0x3591},
-		   [38] = {0x26, 0x840b},
-		   [40] = {0x28, 0xf842}, },
-	.check_efuse = false,
-	.do_toggle = true,
-	.do_toggle_once = false,
-	.use_default_parameter = false,
-	.check_rx_front_end_offset = false,
-};
-
-static const struct phy_cfg rtd1319_phy_cfg = {
-	.param_size = MAX_USB_PHY_DATA_SIZE,
-	.param = {  [1] = {0x01, 0xac86},
-		    [6] = {0x06, 0x0003},
-		    [9] = {0x09, 0x924c},
-		   [10] = {0x0a, 0xa608},
-		   [11] = {0x0b, 0xb905},
-		   [14] = {0x0e, 0x2010},
-		   [32] = {0x20, 0x705a},
-		   [33] = {0x21, 0xf645},
-		   [34] = {0x22, 0x0013},
-		   [35] = {0x23, 0xcb66},
-		   [41] = {0x29, 0xff00}, },
-	.check_efuse = true,
-	.do_toggle = true,
-	.do_toggle_once = false,
-	.use_default_parameter = false,
-	.check_rx_front_end_offset = false,
-};
-
-static const struct phy_cfg rtd1619b_phy_cfg = {
-	.param_size = MAX_USB_PHY_DATA_SIZE,
-	.param = {  [1] = {0x01, 0xac8c},
-		    [6] = {0x06, 0x0017},
-		    [9] = {0x09, 0x724c},
-		   [10] = {0x0a, 0xb610},
-		   [11] = {0x0b, 0xb90d},
-		   [13] = {0x0d, 0xef2a},
-		   [15] = {0x0f, 0x9050},
-		   [16] = {0x10, 0x000c},
-		   [32] = {0x20, 0x70ff},
-		   [34] = {0x22, 0x0013},
-		   [35] = {0x23, 0xdb66},
-		   [38] = {0x26, 0x8609},
-		   [41] = {0x29, 0xff13},
-		   [42] = {0x2a, 0x3070}, },
-	.check_efuse = true,
-	.do_toggle = false,
-	.do_toggle_once = true,
-	.use_default_parameter = false,
-	.check_rx_front_end_offset = false,
-};
-
-static const  struct phy_cfg rtd1319d_phy_cfg = {
-	.param_size = MAX_USB_PHY_DATA_SIZE,
-	.param = {  [1] = {0x01, 0xac89},
-		    [4] = {0x04, 0xf2f5},
-		    [6] = {0x06, 0x0017},
-		    [9] = {0x09, 0x424c},
-		   [10] = {0x0a, 0x9610},
-		   [11] = {0x0b, 0x9901},
-		   [12] = {0x0c, 0xf000},
-		   [13] = {0x0d, 0xef2a},
-		   [14] = {0x0e, 0x1000},
-		   [15] = {0x0f, 0x9050},
-		   [32] = {0x20, 0x7077},
-		   [35] = {0x23, 0x0b62},
-		   [37] = {0x25, 0x10ec},
-		   [42] = {0x2a, 0x3070}, },
-	.check_efuse = true,
-	.do_toggle = false,
-	.do_toggle_once = true,
-	.use_default_parameter = false,
-	.check_rx_front_end_offset = true,
-};
-
-static const struct of_device_id usbphy_rtk_dt_match[] = {
-	{ .compatible = "realtek,rtd1295-usb3phy", .data = &rtd1295_phy_cfg },
-	{ .compatible = "realtek,rtd1319-usb3phy", .data = &rtd1319_phy_cfg },
-	{ .compatible = "realtek,rtd1319d-usb3phy", .data = &rtd1319d_phy_cfg },
-	{ .compatible = "realtek,rtd1619-usb3phy", .data = &rtd1619_phy_cfg },
-	{ .compatible = "realtek,rtd1619b-usb3phy", .data = &rtd1619b_phy_cfg },
-	{},
-};
-MODULE_DEVICE_TABLE(of, usbphy_rtk_dt_match);
-
-static struct platform_driver rtk_usb3phy_driver = {
-	.probe		= rtk_usb3phy_probe,
-	.remove_new	= rtk_usb3phy_remove,
-	.driver		= {
-		.name	= "rtk-usb3phy",
-		.of_match_table = usbphy_rtk_dt_match,
-	},
-};
-
-module_platform_driver(rtk_usb3phy_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform: rtk-usb3phy");
-MODULE_AUTHOR("Stanley Chang <stanley_chang@realtek.com>");
-MODULE_DESCRIPTION("Realtek usb 3.0 phy driver");
-- 
2.41.0

[PATCH 2/3] Revert "phy: realtek: usb: Add driver for the Realtek SoC USB 2.0 PHY"

[Johan Hovold]

This reverts commit 134e6d25f6bd06071e5aac0a7eefcea6f7713955.

The recently added Realtek PHY drivers depend on the new port status
notification mechanism which was built on the deprecated USB PHY
implementation and devicetree binding.

Specifically, using these PHYs would require describing the very same
PHY using both the generic "phy" property and the deprecated "usb-phy"
property which is clearly wrong.

We should not be building new functionality on top of the legacy USB PHY
implementation even if it is currently stuck in some kind of
transitional limbo.

Revert the new Realtek PHY drivers for now so that the port status
notification interface can be reverted and replaced.

Fixes: 134e6d25f6bd ("phy: realtek: usb: Add driver for the Realtek SoC USB 2.0 PHY")
Cc: stable@vger.kernel.org      # 6.6
Cc: Stanley Chang <stanley_chang@realtek.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/Kconfig                |    1 -
 drivers/phy/Makefile               |    1 -
 drivers/phy/realtek/Kconfig        |   20 -
 drivers/phy/realtek/Makefile       |    2 -
 drivers/phy/realtek/phy-rtk-usb2.c | 1325 ----------------------------
 5 files changed, 1349 deletions(-)
 delete mode 100644 drivers/phy/realtek/Kconfig
 delete mode 100644 drivers/phy/realtek/Makefile
 delete mode 100644 drivers/phy/realtek/phy-rtk-usb2.c

diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index d1670bbe6d6b..e4502958fd62 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -87,7 +87,6 @@ source "drivers/phy/motorola/Kconfig"
 source "drivers/phy/mscc/Kconfig"
 source "drivers/phy/qualcomm/Kconfig"
 source "drivers/phy/ralink/Kconfig"
-source "drivers/phy/realtek/Kconfig"
 source "drivers/phy/renesas/Kconfig"
 source "drivers/phy/rockchip/Kconfig"
 source "drivers/phy/samsung/Kconfig"
diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile
index 868a220ed0f6..fb3dc9de6111 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -26,7 +26,6 @@ obj-y					+= allwinner/	\
 					   mscc/	\
 					   qualcomm/	\
 					   ralink/	\
-					   realtek/	\
 					   renesas/	\
 					   rockchip/	\
 					   samsung/	\
diff --git a/drivers/phy/realtek/Kconfig b/drivers/phy/realtek/Kconfig
deleted file mode 100644
index 745587751070..000000000000
--- a/drivers/phy/realtek/Kconfig
+++ /dev/null
@@ -1,20 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Phy drivers for Realtek platforms
-#
-
-if ARCH_REALTEK || COMPILE_TEST
-
-config PHY_RTK_RTD_USB2PHY
-	tristate "Realtek RTD USB2 PHY Transceiver Driver"
-	depends on USB_SUPPORT
-	select GENERIC_PHY
-	select USB_PHY
-	select USB_COMMON
-	help
-	  Enable this to support Realtek SoC USB2 phy transceiver.
-	  The DHC (digital home center) RTD series SoCs used the Synopsys
-	  DWC3 USB IP. This driver will do the PHY initialization
-	  of the parameters.
-
-endif # ARCH_REALTEK || COMPILE_TEST
diff --git a/drivers/phy/realtek/Makefile b/drivers/phy/realtek/Makefile
deleted file mode 100644
index cf5d440841a2..000000000000
--- a/drivers/phy/realtek/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_PHY_RTK_RTD_USB2PHY)	+= phy-rtk-usb2.o
diff --git a/drivers/phy/realtek/phy-rtk-usb2.c b/drivers/phy/realtek/phy-rtk-usb2.c
deleted file mode 100644
index aedc78bd37f7..000000000000
--- a/drivers/phy/realtek/phy-rtk-usb2.c
+++ /dev/null
@@ -1,1325 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- *  phy-rtk-usb2.c RTK usb2.0 PHY driver
- *
- * Copyright (C) 2023 Realtek Semiconductor Corporation
- *
- */
-
-#include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_address.h>
-#include <linux/uaccess.h>
-#include <linux/debugfs.h>
-#include <linux/nvmem-consumer.h>
-#include <linux/regmap.h>
-#include <linux/sys_soc.h>
-#include <linux/mfd/syscon.h>
-#include <linux/phy/phy.h>
-#include <linux/usb.h>
-#include <linux/usb/phy.h>
-#include <linux/usb/hcd.h>
-
-/* GUSB2PHYACCn register */
-#define PHY_NEW_REG_REQ BIT(25)
-#define PHY_VSTS_BUSY   BIT(23)
-#define PHY_VCTRL_SHIFT 8
-#define PHY_REG_DATA_MASK 0xff
-
-#define GET_LOW_NIBBLE(addr) ((addr) & 0x0f)
-#define GET_HIGH_NIBBLE(addr) (((addr) & 0xf0) >> 4)
-
-#define EFUS_USB_DC_CAL_RATE 2
-#define EFUS_USB_DC_CAL_MAX 7
-
-#define EFUS_USB_DC_DIS_RATE 1
-#define EFUS_USB_DC_DIS_MAX 7
-
-#define MAX_PHY_DATA_SIZE 20
-#define OFFEST_PHY_READ 0x20
-
-#define MAX_USB_PHY_NUM 4
-#define MAX_USB_PHY_PAGE0_DATA_SIZE 16
-#define MAX_USB_PHY_PAGE1_DATA_SIZE 16
-#define MAX_USB_PHY_PAGE2_DATA_SIZE 8
-
-#define SET_PAGE_OFFSET 0xf4
-#define SET_PAGE_0 0x9b
-#define SET_PAGE_1 0xbb
-#define SET_PAGE_2 0xdb
-
-#define PAGE_START 0xe0
-#define PAGE0_0XE4 0xe4
-#define PAGE0_0XE6 0xe6
-#define PAGE0_0XE7 0xe7
-#define PAGE1_0XE0 0xe0
-#define PAGE1_0XE2 0xe2
-
-#define SENSITIVITY_CTRL (BIT(4) | BIT(5) | BIT(6))
-#define ENABLE_AUTO_SENSITIVITY_CALIBRATION BIT(2)
-#define DEFAULT_DC_DRIVING_VALUE (0x8)
-#define DEFAULT_DC_DISCONNECTION_VALUE (0x6)
-#define HS_CLK_SELECT BIT(6)
-
-struct phy_reg {
-	void __iomem *reg_wrap_vstatus;
-	void __iomem *reg_gusb2phyacc0;
-	int vstatus_index;
-};
-
-struct phy_data {
-	u8 addr;
-	u8 data;
-};
-
-struct phy_cfg {
-	int page0_size;
-	struct phy_data page0[MAX_USB_PHY_PAGE0_DATA_SIZE];
-	int page1_size;
-	struct phy_data page1[MAX_USB_PHY_PAGE1_DATA_SIZE];
-	int page2_size;
-	struct phy_data page2[MAX_USB_PHY_PAGE2_DATA_SIZE];
-
-	int num_phy;
-
-	bool check_efuse;
-	int check_efuse_version;
-#define CHECK_EFUSE_V1 1
-#define CHECK_EFUSE_V2 2
-	int efuse_dc_driving_rate;
-	int efuse_dc_disconnect_rate;
-	int dc_driving_mask;
-	int dc_disconnect_mask;
-	bool usb_dc_disconnect_at_page0;
-	int driving_updated_for_dev_dis;
-
-	bool do_toggle;
-	bool do_toggle_driving;
-	bool use_default_parameter;
-	bool is_double_sensitivity_mode;
-};
-
-struct phy_parameter {
-	struct phy_reg phy_reg;
-
-	/* Get from efuse */
-	s8 efuse_usb_dc_cal;
-	s8 efuse_usb_dc_dis;
-
-	/* Get from dts */
-	bool inverse_hstx_sync_clock;
-	u32 driving_level;
-	s32 driving_level_compensate;
-	s32 disconnection_compensate;
-};
-
-struct rtk_phy {
-	struct usb_phy phy;
-	struct device *dev;
-
-	struct phy_cfg *phy_cfg;
-	int num_phy;
-	struct phy_parameter *phy_parameter;
-
-	struct dentry *debug_dir;
-};
-
-/* mapping 0xE0 to 0 ... 0xE7 to 7, 0xF0 to 8 ,,, 0xF7 to 15 */
-static inline int page_addr_to_array_index(u8 addr)
-{
-	return (int)((((addr) - PAGE_START) & 0x7) +
-		((((addr) - PAGE_START) & 0x10) >> 1));
-}
-
-static inline u8 array_index_to_page_addr(int index)
-{
-	return ((((index) + PAGE_START) & 0x7) +
-		((((index) & 0x8) << 1) + PAGE_START));
-}
-
-#define PHY_IO_TIMEOUT_USEC		(50000)
-#define PHY_IO_DELAY_US			(100)
-
-static inline int utmi_wait_register(void __iomem *reg, u32 mask, u32 result)
-{
-	int ret;
-	unsigned int val;
-
-	ret = read_poll_timeout(readl, val, ((val & mask) == result),
-				PHY_IO_DELAY_US, PHY_IO_TIMEOUT_USEC, false, reg);
-	if (ret) {
-		pr_err("%s can't program USB phy\n", __func__);
-		return -ETIMEDOUT;
-	}
-
-	return 0;
-}
-
-static char rtk_phy_read(struct phy_reg *phy_reg, char addr)
-{
-	void __iomem *reg_gusb2phyacc0 = phy_reg->reg_gusb2phyacc0;
-	unsigned int val;
-	int ret = 0;
-
-	addr -= OFFEST_PHY_READ;
-
-	/* polling until VBusy == 0 */
-	ret = utmi_wait_register(reg_gusb2phyacc0, PHY_VSTS_BUSY, 0);
-	if (ret)
-		return (char)ret;
-
-	/* VCtrl = low nibble of addr, and set PHY_NEW_REG_REQ */
-	val = PHY_NEW_REG_REQ | (GET_LOW_NIBBLE(addr) << PHY_VCTRL_SHIFT);
-	writel(val, reg_gusb2phyacc0);
-	ret = utmi_wait_register(reg_gusb2phyacc0, PHY_VSTS_BUSY, 0);
-	if (ret)
-		return (char)ret;
-
-	/* VCtrl = high nibble of addr, and set PHY_NEW_REG_REQ */
-	val = PHY_NEW_REG_REQ | (GET_HIGH_NIBBLE(addr) << PHY_VCTRL_SHIFT);
-	writel(val, reg_gusb2phyacc0);
-	ret = utmi_wait_register(reg_gusb2phyacc0, PHY_VSTS_BUSY, 0);
-	if (ret)
-		return (char)ret;
-
-	val = readl(reg_gusb2phyacc0);
-
-	return (char)(val & PHY_REG_DATA_MASK);
-}
-
-static int rtk_phy_write(struct phy_reg *phy_reg, char addr, char data)
-{
-	unsigned int val;
-	void __iomem *reg_wrap_vstatus = phy_reg->reg_wrap_vstatus;
-	void __iomem *reg_gusb2phyacc0 = phy_reg->reg_gusb2phyacc0;
-	int shift_bits = phy_reg->vstatus_index * 8;
-	int ret = 0;
-
-	/* write data to VStatusOut2 (data output to phy) */
-	writel((u32)data << shift_bits, reg_wrap_vstatus);
-
-	ret = utmi_wait_register(reg_gusb2phyacc0, PHY_VSTS_BUSY, 0);
-	if (ret)
-		return ret;
-
-	/* VCtrl = low nibble of addr, set PHY_NEW_REG_REQ */
-	val = PHY_NEW_REG_REQ | (GET_LOW_NIBBLE(addr) << PHY_VCTRL_SHIFT);
-
-	writel(val, reg_gusb2phyacc0);
-	ret = utmi_wait_register(reg_gusb2phyacc0, PHY_VSTS_BUSY, 0);
-	if (ret)
-		return ret;
-
-	/* VCtrl = high nibble of addr, set PHY_NEW_REG_REQ */
-	val = PHY_NEW_REG_REQ | (GET_HIGH_NIBBLE(addr) << PHY_VCTRL_SHIFT);
-
-	writel(val, reg_gusb2phyacc0);
-	ret = utmi_wait_register(reg_gusb2phyacc0, PHY_VSTS_BUSY, 0);
-	if (ret)
-		return ret;
-
-	return 0;
-}
-
-static int rtk_phy_set_page(struct phy_reg *phy_reg, int page)
-{
-	switch (page) {
-	case 0:
-		return rtk_phy_write(phy_reg, SET_PAGE_OFFSET, SET_PAGE_0);
-	case 1:
-		return rtk_phy_write(phy_reg, SET_PAGE_OFFSET, SET_PAGE_1);
-	case 2:
-		return rtk_phy_write(phy_reg, SET_PAGE_OFFSET, SET_PAGE_2);
-	default:
-		pr_err("%s error page=%d\n", __func__, page);
-	}
-
-	return -EINVAL;
-}
-
-static u8 __updated_dc_disconnect_level_page0_0xe4(struct phy_cfg *phy_cfg,
-						   struct phy_parameter *phy_parameter, u8 data)
-{
-	u8 ret;
-	s32 val;
-	s32 dc_disconnect_mask = phy_cfg->dc_disconnect_mask;
-	int offset = 4;
-
-	val = (s32)((data >> offset) & dc_disconnect_mask)
-		     + phy_parameter->efuse_usb_dc_dis
-		     + phy_parameter->disconnection_compensate;
-
-	if (val > dc_disconnect_mask)
-		val = dc_disconnect_mask;
-	else if (val < 0)
-		val = 0;
-
-	ret = (data & (~(dc_disconnect_mask << offset))) |
-		    (val & dc_disconnect_mask) << offset;
-
-	return ret;
-}
-
-/* updated disconnect level at page0 */
-static void update_dc_disconnect_level_at_page0(struct rtk_phy *rtk_phy,
-						struct phy_parameter *phy_parameter, bool update)
-{
-	struct phy_cfg *phy_cfg;
-	struct phy_reg *phy_reg;
-	struct phy_data *phy_data_page;
-	struct phy_data *phy_data;
-	u8 addr, data;
-	int offset = 4;
-	s32 dc_disconnect_mask;
-	int i;
-
-	phy_cfg = rtk_phy->phy_cfg;
-	phy_reg = &phy_parameter->phy_reg;
-
-	/* Set page 0 */
-	phy_data_page = phy_cfg->page0;
-	rtk_phy_set_page(phy_reg, 0);
-
-	i = page_addr_to_array_index(PAGE0_0XE4);
-	phy_data = phy_data_page + i;
-	if (!phy_data->addr) {
-		phy_data->addr = PAGE0_0XE4;
-		phy_data->data = rtk_phy_read(phy_reg, PAGE0_0XE4);
-	}
-
-	addr = phy_data->addr;
-	data = phy_data->data;
-	dc_disconnect_mask = phy_cfg->dc_disconnect_mask;
-
-	if (update)
-		data = __updated_dc_disconnect_level_page0_0xe4(phy_cfg, phy_parameter, data);
-	else
-		data = (data & ~(dc_disconnect_mask << offset)) |
-			(DEFAULT_DC_DISCONNECTION_VALUE << offset);
-
-	if (rtk_phy_write(phy_reg, addr, data))
-		dev_err(rtk_phy->dev,
-			"%s: Error to set page1 parameter addr=0x%x value=0x%x\n",
-			__func__, addr, data);
-}
-
-static u8 __updated_dc_disconnect_level_page1_0xe2(struct phy_cfg *phy_cfg,
-						   struct phy_parameter *phy_parameter, u8 data)
-{
-	u8 ret;
-	s32 val;
-	s32 dc_disconnect_mask = phy_cfg->dc_disconnect_mask;
-
-	if (phy_cfg->check_efuse_version == CHECK_EFUSE_V1) {
-		val = (s32)(data & dc_disconnect_mask)
-			    + phy_parameter->efuse_usb_dc_dis
-			    + phy_parameter->disconnection_compensate;
-	} else { /* for CHECK_EFUSE_V2 or no efuse */
-		if (phy_parameter->efuse_usb_dc_dis)
-			val = (s32)(phy_parameter->efuse_usb_dc_dis +
-				    phy_parameter->disconnection_compensate);
-		else
-			val = (s32)((data & dc_disconnect_mask) +
-				    phy_parameter->disconnection_compensate);
-	}
-
-	if (val > dc_disconnect_mask)
-		val = dc_disconnect_mask;
-	else if (val < 0)
-		val = 0;
-
-	ret = (data & (~dc_disconnect_mask)) | (val & dc_disconnect_mask);
-
-	return ret;
-}
-
-/* updated disconnect level at page1 */
-static void update_dc_disconnect_level_at_page1(struct rtk_phy *rtk_phy,
-						struct phy_parameter *phy_parameter, bool update)
-{
-	struct phy_cfg *phy_cfg;
-	struct phy_data *phy_data_page;
-	struct phy_data *phy_data;
-	struct phy_reg *phy_reg;
-	u8 addr, data;
-	s32 dc_disconnect_mask;
-	int i;
-
-	phy_cfg = rtk_phy->phy_cfg;
-	phy_reg = &phy_parameter->phy_reg;
-
-	/* Set page 1 */
-	phy_data_page = phy_cfg->page1;
-	rtk_phy_set_page(phy_reg, 1);
-
-	i = page_addr_to_array_index(PAGE1_0XE2);
-	phy_data = phy_data_page + i;
-	if (!phy_data->addr) {
-		phy_data->addr = PAGE1_0XE2;
-		phy_data->data = rtk_phy_read(phy_reg, PAGE1_0XE2);
-	}
-
-	addr = phy_data->addr;
-	data = phy_data->data;
-	dc_disconnect_mask = phy_cfg->dc_disconnect_mask;
-
-	if (update)
-		data = __updated_dc_disconnect_level_page1_0xe2(phy_cfg, phy_parameter, data);
-	else
-		data = (data & ~dc_disconnect_mask) | DEFAULT_DC_DISCONNECTION_VALUE;
-
-	if (rtk_phy_write(phy_reg, addr, data))
-		dev_err(rtk_phy->dev,
-			"%s: Error to set page1 parameter addr=0x%x value=0x%x\n",
-			__func__, addr, data);
-}
-
-static void update_dc_disconnect_level(struct rtk_phy *rtk_phy,
-				       struct phy_parameter *phy_parameter, bool update)
-{
-	struct phy_cfg *phy_cfg = rtk_phy->phy_cfg;
-
-	if (phy_cfg->usb_dc_disconnect_at_page0)
-		update_dc_disconnect_level_at_page0(rtk_phy, phy_parameter, update);
-	else
-		update_dc_disconnect_level_at_page1(rtk_phy, phy_parameter, update);
-}
-
-static u8 __update_dc_driving_page0_0xe4(struct phy_cfg *phy_cfg,
-					 struct phy_parameter *phy_parameter, u8 data)
-{
-	s32 driving_level_compensate = phy_parameter->driving_level_compensate;
-	s32 dc_driving_mask = phy_cfg->dc_driving_mask;
-	s32 val;
-	u8 ret;
-
-	if (phy_cfg->check_efuse_version == CHECK_EFUSE_V1) {
-		val = (s32)(data & dc_driving_mask) + driving_level_compensate
-			    + phy_parameter->efuse_usb_dc_cal;
-	} else { /* for CHECK_EFUSE_V2 or no efuse */
-		if (phy_parameter->efuse_usb_dc_cal)
-			val = (s32)((phy_parameter->efuse_usb_dc_cal & dc_driving_mask)
-				    + driving_level_compensate);
-		else
-			val = (s32)(data & dc_driving_mask);
-	}
-
-	if (val > dc_driving_mask)
-		val = dc_driving_mask;
-	else if (val < 0)
-		val = 0;
-
-	ret = (data & (~dc_driving_mask)) | (val & dc_driving_mask);
-
-	return ret;
-}
-
-static void update_dc_driving_level(struct rtk_phy *rtk_phy,
-				    struct phy_parameter *phy_parameter)
-{
-	struct phy_cfg *phy_cfg;
-	struct phy_reg *phy_reg;
-
-	phy_reg = &phy_parameter->phy_reg;
-	phy_cfg = rtk_phy->phy_cfg;
-	if (!phy_cfg->page0[4].addr) {
-		rtk_phy_set_page(phy_reg, 0);
-		phy_cfg->page0[4].addr = PAGE0_0XE4;
-		phy_cfg->page0[4].data = rtk_phy_read(phy_reg, PAGE0_0XE4);
-	}
-
-	if (phy_parameter->driving_level != DEFAULT_DC_DRIVING_VALUE) {
-		u32 dc_driving_mask;
-		u8 driving_level;
-		u8 data;
-
-		data = phy_cfg->page0[4].data;
-		dc_driving_mask = phy_cfg->dc_driving_mask;
-		driving_level = data & dc_driving_mask;
-
-		dev_dbg(rtk_phy->dev, "%s driving_level=%d => dts driving_level=%d\n",
-			__func__, driving_level, phy_parameter->driving_level);
-
-		phy_cfg->page0[4].data = (data & (~dc_driving_mask)) |
-			    (phy_parameter->driving_level & dc_driving_mask);
-	}
-
-	phy_cfg->page0[4].data = __update_dc_driving_page0_0xe4(phy_cfg,
-								phy_parameter,
-								phy_cfg->page0[4].data);
-}
-
-static void update_hs_clk_select(struct rtk_phy *rtk_phy,
-				 struct phy_parameter *phy_parameter)
-{
-	struct phy_cfg *phy_cfg;
-	struct phy_reg *phy_reg;
-
-	phy_cfg = rtk_phy->phy_cfg;
-	phy_reg = &phy_parameter->phy_reg;
-
-	if (phy_parameter->inverse_hstx_sync_clock) {
-		if (!phy_cfg->page0[6].addr) {
-			rtk_phy_set_page(phy_reg, 0);
-			phy_cfg->page0[6].addr = PAGE0_0XE6;
-			phy_cfg->page0[6].data = rtk_phy_read(phy_reg, PAGE0_0XE6);
-		}
-
-		phy_cfg->page0[6].data = phy_cfg->page0[6].data | HS_CLK_SELECT;
-	}
-}
-
-static void do_rtk_phy_toggle(struct rtk_phy *rtk_phy,
-			      int index, bool connect)
-{
-	struct phy_parameter *phy_parameter;
-	struct phy_cfg *phy_cfg;
-	struct phy_reg *phy_reg;
-	struct phy_data *phy_data_page;
-	u8 addr, data;
-	int i;
-
-	phy_cfg = rtk_phy->phy_cfg;
-	phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
-	phy_reg = &phy_parameter->phy_reg;
-
-	if (!phy_cfg->do_toggle)
-		goto out;
-
-	if (phy_cfg->is_double_sensitivity_mode)
-		goto do_toggle_driving;
-
-	/* Set page 0 */
-	rtk_phy_set_page(phy_reg, 0);
-
-	addr = PAGE0_0XE7;
-	data = rtk_phy_read(phy_reg, addr);
-
-	if (connect)
-		rtk_phy_write(phy_reg, addr, data & (~SENSITIVITY_CTRL));
-	else
-		rtk_phy_write(phy_reg, addr, data | (SENSITIVITY_CTRL));
-
-do_toggle_driving:
-
-	if (!phy_cfg->do_toggle_driving)
-		goto do_toggle;
-
-	/* Page 0 addr 0xE4 driving capability */
-
-	/* Set page 0 */
-	phy_data_page = phy_cfg->page0;
-	rtk_phy_set_page(phy_reg, 0);
-
-	i = page_addr_to_array_index(PAGE0_0XE4);
-	addr = phy_data_page[i].addr;
-	data = phy_data_page[i].data;
-
-	if (connect) {
-		rtk_phy_write(phy_reg, addr, data);
-	} else {
-		u8 value;
-		s32 tmp;
-		s32 driving_updated =
-			    phy_cfg->driving_updated_for_dev_dis;
-		s32 dc_driving_mask = phy_cfg->dc_driving_mask;
-
-		tmp = (s32)(data & dc_driving_mask) + driving_updated;
-
-		if (tmp > dc_driving_mask)
-			tmp = dc_driving_mask;
-		else if (tmp < 0)
-			tmp = 0;
-
-		value = (data & (~dc_driving_mask)) | (tmp & dc_driving_mask);
-
-		rtk_phy_write(phy_reg, addr, value);
-	}
-
-do_toggle:
-	/* restore dc disconnect level before toggle */
-	update_dc_disconnect_level(rtk_phy, phy_parameter, false);
-
-	/* Set page 1 */
-	rtk_phy_set_page(phy_reg, 1);
-
-	addr = PAGE1_0XE0;
-	data = rtk_phy_read(phy_reg, addr);
-
-	rtk_phy_write(phy_reg, addr, data &
-		      (~ENABLE_AUTO_SENSITIVITY_CALIBRATION));
-	mdelay(1);
-	rtk_phy_write(phy_reg, addr, data |
-		      (ENABLE_AUTO_SENSITIVITY_CALIBRATION));
-
-	/* update dc disconnect level after toggle */
-	update_dc_disconnect_level(rtk_phy, phy_parameter, true);
-
-out:
-	return;
-}
-
-static int do_rtk_phy_init(struct rtk_phy *rtk_phy, int index)
-{
-	struct phy_parameter *phy_parameter;
-	struct phy_cfg *phy_cfg;
-	struct phy_data *phy_data_page;
-	struct phy_reg *phy_reg;
-	int i;
-
-	phy_cfg = rtk_phy->phy_cfg;
-	phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
-	phy_reg = &phy_parameter->phy_reg;
-
-	if (phy_cfg->use_default_parameter) {
-		dev_dbg(rtk_phy->dev, "%s phy#%d use default parameter\n",
-			__func__, index);
-		goto do_toggle;
-	}
-
-	/* Set page 0 */
-	phy_data_page = phy_cfg->page0;
-	rtk_phy_set_page(phy_reg, 0);
-
-	for (i = 0; i < phy_cfg->page0_size; i++) {
-		struct phy_data *phy_data = phy_data_page + i;
-		u8 addr = phy_data->addr;
-		u8 data = phy_data->data;
-
-		if (!addr)
-			continue;
-
-		if (rtk_phy_write(phy_reg, addr, data)) {
-			dev_err(rtk_phy->dev,
-				"%s: Error to set page0 parameter addr=0x%x value=0x%x\n",
-				__func__, addr, data);
-			return -EINVAL;
-		}
-	}
-
-	/* Set page 1 */
-	phy_data_page = phy_cfg->page1;
-	rtk_phy_set_page(phy_reg, 1);
-
-	for (i = 0; i < phy_cfg->page1_size; i++) {
-		struct phy_data *phy_data = phy_data_page + i;
-		u8 addr = phy_data->addr;
-		u8 data = phy_data->data;
-
-		if (!addr)
-			continue;
-
-		if (rtk_phy_write(phy_reg, addr, data)) {
-			dev_err(rtk_phy->dev,
-				"%s: Error to set page1 parameter addr=0x%x value=0x%x\n",
-				__func__, addr, data);
-			return -EINVAL;
-		}
-	}
-
-	if (phy_cfg->page2_size == 0)
-		goto do_toggle;
-
-	/* Set page 2 */
-	phy_data_page = phy_cfg->page2;
-	rtk_phy_set_page(phy_reg, 2);
-
-	for (i = 0; i < phy_cfg->page2_size; i++) {
-		struct phy_data *phy_data = phy_data_page + i;
-		u8 addr = phy_data->addr;
-		u8 data = phy_data->data;
-
-		if (!addr)
-			continue;
-
-		if (rtk_phy_write(phy_reg, addr, data)) {
-			dev_err(rtk_phy->dev,
-				"%s: Error to set page2 parameter addr=0x%x value=0x%x\n",
-				__func__, addr, data);
-			return -EINVAL;
-		}
-	}
-
-do_toggle:
-	do_rtk_phy_toggle(rtk_phy, index, false);
-
-	return 0;
-}
-
-static int rtk_phy_init(struct phy *phy)
-{
-	struct rtk_phy *rtk_phy = phy_get_drvdata(phy);
-	unsigned long phy_init_time = jiffies;
-	int i, ret = 0;
-
-	if (!rtk_phy)
-		return -EINVAL;
-
-	for (i = 0; i < rtk_phy->num_phy; i++)
-		ret = do_rtk_phy_init(rtk_phy, i);
-
-	dev_dbg(rtk_phy->dev, "Initialized RTK USB 2.0 PHY (take %dms)\n",
-		jiffies_to_msecs(jiffies - phy_init_time));
-	return ret;
-}
-
-static int rtk_phy_exit(struct phy *phy)
-{
-	return 0;
-}
-
-static const struct phy_ops ops = {
-	.init		= rtk_phy_init,
-	.exit		= rtk_phy_exit,
-	.owner		= THIS_MODULE,
-};
-
-static void rtk_phy_toggle(struct usb_phy *usb2_phy, bool connect, int port)
-{
-	int index = port;
-	struct rtk_phy *rtk_phy = NULL;
-
-	rtk_phy = dev_get_drvdata(usb2_phy->dev);
-
-	if (index > rtk_phy->num_phy) {
-		dev_err(rtk_phy->dev, "%s: The port=%d is not in usb phy (num_phy=%d)\n",
-			__func__, index, rtk_phy->num_phy);
-		return;
-	}
-
-	do_rtk_phy_toggle(rtk_phy, index, connect);
-}
-
-static int rtk_phy_notify_port_status(struct usb_phy *x, int port,
-				      u16 portstatus, u16 portchange)
-{
-	bool connect = false;
-
-	pr_debug("%s port=%d portstatus=0x%x portchange=0x%x\n",
-		 __func__, port, (int)portstatus, (int)portchange);
-	if (portstatus & USB_PORT_STAT_CONNECTION)
-		connect = true;
-
-	if (portchange & USB_PORT_STAT_C_CONNECTION)
-		rtk_phy_toggle(x, connect, port);
-
-	return 0;
-}
-
-#ifdef CONFIG_DEBUG_FS
-static struct dentry *create_phy_debug_root(void)
-{
-	struct dentry *phy_debug_root;
-
-	phy_debug_root = debugfs_lookup("phy", usb_debug_root);
-	if (!phy_debug_root)
-		phy_debug_root = debugfs_create_dir("phy", usb_debug_root);
-
-	return phy_debug_root;
-}
-
-static int rtk_usb2_parameter_show(struct seq_file *s, void *unused)
-{
-	struct rtk_phy *rtk_phy = s->private;
-	struct phy_cfg *phy_cfg;
-	int i, index;
-
-	phy_cfg = rtk_phy->phy_cfg;
-
-	seq_puts(s, "Property:\n");
-	seq_printf(s, "  check_efuse: %s\n",
-		   phy_cfg->check_efuse ? "Enable" : "Disable");
-	seq_printf(s, "  check_efuse_version: %d\n",
-		   phy_cfg->check_efuse_version);
-	seq_printf(s, "  efuse_dc_driving_rate: %d\n",
-		   phy_cfg->efuse_dc_driving_rate);
-	seq_printf(s, "  dc_driving_mask: 0x%x\n",
-		   phy_cfg->dc_driving_mask);
-	seq_printf(s, "  efuse_dc_disconnect_rate: %d\n",
-		   phy_cfg->efuse_dc_disconnect_rate);
-	seq_printf(s, "  dc_disconnect_mask: 0x%x\n",
-		   phy_cfg->dc_disconnect_mask);
-	seq_printf(s, "  usb_dc_disconnect_at_page0: %s\n",
-		   phy_cfg->usb_dc_disconnect_at_page0 ? "true" : "false");
-	seq_printf(s, "  do_toggle: %s\n",
-		   phy_cfg->do_toggle ? "Enable" : "Disable");
-	seq_printf(s, "  do_toggle_driving: %s\n",
-		   phy_cfg->do_toggle_driving ? "Enable" : "Disable");
-	seq_printf(s, "  driving_updated_for_dev_dis: 0x%x\n",
-		   phy_cfg->driving_updated_for_dev_dis);
-	seq_printf(s, "  use_default_parameter: %s\n",
-		   phy_cfg->use_default_parameter ? "Enable" : "Disable");
-	seq_printf(s, "  is_double_sensitivity_mode: %s\n",
-		   phy_cfg->is_double_sensitivity_mode ? "Enable" : "Disable");
-
-	for (index = 0; index < rtk_phy->num_phy; index++) {
-		struct phy_parameter *phy_parameter;
-		struct phy_reg *phy_reg;
-		struct phy_data *phy_data_page;
-
-		phy_parameter =  &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
-		phy_reg = &phy_parameter->phy_reg;
-
-		seq_printf(s, "PHY %d:\n", index);
-
-		seq_puts(s, "Page 0:\n");
-		/* Set page 0 */
-		phy_data_page = phy_cfg->page0;
-		rtk_phy_set_page(phy_reg, 0);
-
-		for (i = 0; i < phy_cfg->page0_size; i++) {
-			struct phy_data *phy_data = phy_data_page + i;
-			u8 addr = array_index_to_page_addr(i);
-			u8 data = phy_data->data;
-			u8 value = rtk_phy_read(phy_reg, addr);
-
-			if (phy_data->addr)
-				seq_printf(s, "  Page 0: addr=0x%x data=0x%02x ==> read value=0x%02x\n",
-					   addr, data, value);
-			else
-				seq_printf(s, "  Page 0: addr=0x%x data=none ==> read value=0x%02x\n",
-					   addr, value);
-		}
-
-		seq_puts(s, "Page 1:\n");
-		/* Set page 1 */
-		phy_data_page = phy_cfg->page1;
-		rtk_phy_set_page(phy_reg, 1);
-
-		for (i = 0; i < phy_cfg->page1_size; i++) {
-			struct phy_data *phy_data = phy_data_page + i;
-			u8 addr = array_index_to_page_addr(i);
-			u8 data = phy_data->data;
-			u8 value = rtk_phy_read(phy_reg, addr);
-
-			if (phy_data->addr)
-				seq_printf(s, "  Page 1: addr=0x%x data=0x%02x ==> read value=0x%02x\n",
-					   addr, data, value);
-			else
-				seq_printf(s, "  Page 1: addr=0x%x data=none ==> read value=0x%02x\n",
-					   addr, value);
-		}
-
-		if (phy_cfg->page2_size == 0)
-			goto out;
-
-		seq_puts(s, "Page 2:\n");
-		/* Set page 2 */
-		phy_data_page = phy_cfg->page2;
-		rtk_phy_set_page(phy_reg, 2);
-
-		for (i = 0; i < phy_cfg->page2_size; i++) {
-			struct phy_data *phy_data = phy_data_page + i;
-			u8 addr = array_index_to_page_addr(i);
-			u8 data = phy_data->data;
-			u8 value = rtk_phy_read(phy_reg, addr);
-
-			if (phy_data->addr)
-				seq_printf(s, "  Page 2: addr=0x%x data=0x%02x ==> read value=0x%02x\n",
-					   addr, data, value);
-			else
-				seq_printf(s, "  Page 2: addr=0x%x data=none ==> read value=0x%02x\n",
-					   addr, value);
-		}
-
-out:
-		seq_puts(s, "PHY Property:\n");
-		seq_printf(s, "  efuse_usb_dc_cal: %d\n",
-			   (int)phy_parameter->efuse_usb_dc_cal);
-		seq_printf(s, "  efuse_usb_dc_dis: %d\n",
-			   (int)phy_parameter->efuse_usb_dc_dis);
-		seq_printf(s, "  inverse_hstx_sync_clock: %s\n",
-			   phy_parameter->inverse_hstx_sync_clock ? "Enable" : "Disable");
-		seq_printf(s, "  driving_level: %d\n",
-			   phy_parameter->driving_level);
-		seq_printf(s, "  driving_level_compensate: %d\n",
-			   phy_parameter->driving_level_compensate);
-		seq_printf(s, "  disconnection_compensate: %d\n",
-			   phy_parameter->disconnection_compensate);
-	}
-
-	return 0;
-}
-DEFINE_SHOW_ATTRIBUTE(rtk_usb2_parameter);
-
-static inline void create_debug_files(struct rtk_phy *rtk_phy)
-{
-	struct dentry *phy_debug_root = NULL;
-
-	phy_debug_root = create_phy_debug_root();
-	if (!phy_debug_root)
-		return;
-
-	rtk_phy->debug_dir = debugfs_create_dir(dev_name(rtk_phy->dev),
-						phy_debug_root);
-
-	debugfs_create_file("parameter", 0444, rtk_phy->debug_dir, rtk_phy,
-			    &rtk_usb2_parameter_fops);
-
-	return;
-}
-
-static inline void remove_debug_files(struct rtk_phy *rtk_phy)
-{
-	debugfs_remove_recursive(rtk_phy->debug_dir);
-}
-#else
-static inline void create_debug_files(struct rtk_phy *rtk_phy) { }
-static inline void remove_debug_files(struct rtk_phy *rtk_phy) { }
-#endif /* CONFIG_DEBUG_FS */
-
-static int get_phy_data_by_efuse(struct rtk_phy *rtk_phy,
-				 struct phy_parameter *phy_parameter, int index)
-{
-	struct phy_cfg *phy_cfg = rtk_phy->phy_cfg;
-	u8 value = 0;
-	struct nvmem_cell *cell;
-	struct soc_device_attribute rtk_soc_groot[] = {
-		    { .family = "Realtek Groot",},
-		    { /* empty */ } };
-
-	if (!phy_cfg->check_efuse)
-		goto out;
-
-	/* Read efuse for usb dc cal */
-	cell = nvmem_cell_get(rtk_phy->dev, "usb-dc-cal");
-	if (IS_ERR(cell)) {
-		dev_dbg(rtk_phy->dev, "%s no usb-dc-cal: %ld\n",
-			__func__, PTR_ERR(cell));
-	} else {
-		unsigned char *buf;
-		size_t buf_size;
-
-		buf = nvmem_cell_read(cell, &buf_size);
-		if (!IS_ERR(buf)) {
-			value = buf[0] & phy_cfg->dc_driving_mask;
-			kfree(buf);
-		}
-		nvmem_cell_put(cell);
-	}
-
-	if (phy_cfg->check_efuse_version == CHECK_EFUSE_V1) {
-		int rate = phy_cfg->efuse_dc_driving_rate;
-
-		if (value <= EFUS_USB_DC_CAL_MAX)
-			phy_parameter->efuse_usb_dc_cal = (int8_t)(value * rate);
-		else
-			phy_parameter->efuse_usb_dc_cal = -(int8_t)
-				    ((EFUS_USB_DC_CAL_MAX & value) * rate);
-
-		if (soc_device_match(rtk_soc_groot)) {
-			dev_dbg(rtk_phy->dev, "For groot IC we need a workaround to adjust efuse_usb_dc_cal\n");
-
-			/* We don't multiple dc_cal_rate=2 for positive dc cal compensate */
-			if (value <= EFUS_USB_DC_CAL_MAX)
-				phy_parameter->efuse_usb_dc_cal = (int8_t)(value);
-
-			/* We set max dc cal compensate is 0x8 if otp is 0x7 */
-			if (value == 0x7)
-				phy_parameter->efuse_usb_dc_cal = (int8_t)(value + 1);
-		}
-	} else { /* for CHECK_EFUSE_V2 */
-		phy_parameter->efuse_usb_dc_cal = value & phy_cfg->dc_driving_mask;
-	}
-
-	/* Read efuse for usb dc disconnect level */
-	value = 0;
-	cell = nvmem_cell_get(rtk_phy->dev, "usb-dc-dis");
-	if (IS_ERR(cell)) {
-		dev_dbg(rtk_phy->dev, "%s no usb-dc-dis: %ld\n",
-			__func__, PTR_ERR(cell));
-	} else {
-		unsigned char *buf;
-		size_t buf_size;
-
-		buf = nvmem_cell_read(cell, &buf_size);
-		if (!IS_ERR(buf)) {
-			value = buf[0] & phy_cfg->dc_disconnect_mask;
-			kfree(buf);
-		}
-		nvmem_cell_put(cell);
-	}
-
-	if (phy_cfg->check_efuse_version == CHECK_EFUSE_V1) {
-		int rate = phy_cfg->efuse_dc_disconnect_rate;
-
-		if (value <= EFUS_USB_DC_DIS_MAX)
-			phy_parameter->efuse_usb_dc_dis = (int8_t)(value * rate);
-		else
-			phy_parameter->efuse_usb_dc_dis = -(int8_t)
-				    ((EFUS_USB_DC_DIS_MAX & value) * rate);
-	} else { /* for CHECK_EFUSE_V2 */
-		phy_parameter->efuse_usb_dc_dis = value & phy_cfg->dc_disconnect_mask;
-	}
-
-out:
-	return 0;
-}
-
-static int parse_phy_data(struct rtk_phy *rtk_phy)
-{
-	struct device *dev = rtk_phy->dev;
-	struct device_node *np = dev->of_node;
-	struct phy_parameter *phy_parameter;
-	int ret = 0;
-	int index;
-
-	rtk_phy->phy_parameter = devm_kzalloc(dev, sizeof(struct phy_parameter) *
-						rtk_phy->num_phy, GFP_KERNEL);
-	if (!rtk_phy->phy_parameter)
-		return -ENOMEM;
-
-	for (index = 0; index < rtk_phy->num_phy; index++) {
-		phy_parameter = &((struct phy_parameter *)rtk_phy->phy_parameter)[index];
-
-		phy_parameter->phy_reg.reg_wrap_vstatus = of_iomap(np, 0);
-		phy_parameter->phy_reg.reg_gusb2phyacc0 = of_iomap(np, 1) + index;
-		phy_parameter->phy_reg.vstatus_index = index;
-
-		if (of_property_read_bool(np, "realtek,inverse-hstx-sync-clock"))
-			phy_parameter->inverse_hstx_sync_clock = true;
-		else
-			phy_parameter->inverse_hstx_sync_clock = false;
-
-		if (of_property_read_u32_index(np, "realtek,driving-level",
-					       index, &phy_parameter->driving_level))
-			phy_parameter->driving_level = DEFAULT_DC_DRIVING_VALUE;
-
-		if (of_property_read_u32_index(np, "realtek,driving-level-compensate",
-					       index, &phy_parameter->driving_level_compensate))
-			phy_parameter->driving_level_compensate = 0;
-
-		if (of_property_read_u32_index(np, "realtek,disconnection-compensate",
-					       index, &phy_parameter->disconnection_compensate))
-			phy_parameter->disconnection_compensate = 0;
-
-		get_phy_data_by_efuse(rtk_phy, phy_parameter, index);
-
-		update_dc_driving_level(rtk_phy, phy_parameter);
-
-		update_hs_clk_select(rtk_phy, phy_parameter);
-	}
-
-	return ret;
-}
-
-static int rtk_usb2phy_probe(struct platform_device *pdev)
-{
-	struct rtk_phy *rtk_phy;
-	struct device *dev = &pdev->dev;
-	struct phy *generic_phy;
-	struct phy_provider *phy_provider;
-	const struct phy_cfg *phy_cfg;
-	int ret = 0;
-
-	phy_cfg = of_device_get_match_data(dev);
-	if (!phy_cfg) {
-		dev_err(dev, "phy config are not assigned!\n");
-		return -EINVAL;
-	}
-
-	rtk_phy = devm_kzalloc(dev, sizeof(*rtk_phy), GFP_KERNEL);
-	if (!rtk_phy)
-		return -ENOMEM;
-
-	rtk_phy->dev			= &pdev->dev;
-	rtk_phy->phy.dev		= rtk_phy->dev;
-	rtk_phy->phy.label		= "rtk-usb2phy";
-	rtk_phy->phy.notify_port_status = rtk_phy_notify_port_status;
-
-	rtk_phy->phy_cfg = devm_kzalloc(dev, sizeof(*phy_cfg), GFP_KERNEL);
-
-	memcpy(rtk_phy->phy_cfg, phy_cfg, sizeof(*phy_cfg));
-
-	rtk_phy->num_phy = phy_cfg->num_phy;
-
-	ret = parse_phy_data(rtk_phy);
-	if (ret)
-		goto err;
-
-	platform_set_drvdata(pdev, rtk_phy);
-
-	generic_phy = devm_phy_create(rtk_phy->dev, NULL, &ops);
-	if (IS_ERR(generic_phy))
-		return PTR_ERR(generic_phy);
-
-	phy_set_drvdata(generic_phy, rtk_phy);
-
-	phy_provider = devm_of_phy_provider_register(rtk_phy->dev,
-						     of_phy_simple_xlate);
-	if (IS_ERR(phy_provider))
-		return PTR_ERR(phy_provider);
-
-	ret = usb_add_phy_dev(&rtk_phy->phy);
-	if (ret)
-		goto err;
-
-	create_debug_files(rtk_phy);
-
-err:
-	return ret;
-}
-
-static void rtk_usb2phy_remove(struct platform_device *pdev)
-{
-	struct rtk_phy *rtk_phy = platform_get_drvdata(pdev);
-
-	remove_debug_files(rtk_phy);
-
-	usb_remove_phy(&rtk_phy->phy);
-}
-
-static const struct phy_cfg rtd1295_phy_cfg = {
-	.page0_size = MAX_USB_PHY_PAGE0_DATA_SIZE,
-	.page0 = { [0] = {0xe0, 0x90},
-		   [3] = {0xe3, 0x3a},
-		   [4] = {0xe4, 0x68},
-		   [6] = {0xe6, 0x91},
-		  [13] = {0xf5, 0x81},
-		  [15] = {0xf7, 0x02}, },
-	.page1_size = 8,
-	.page1 = { /* default parameter */ },
-	.page2_size = 0,
-	.page2 = { /* no parameter */ },
-	.num_phy = 1,
-	.check_efuse = false,
-	.check_efuse_version = CHECK_EFUSE_V1,
-	.efuse_dc_driving_rate = 1,
-	.dc_driving_mask = 0xf,
-	.efuse_dc_disconnect_rate = EFUS_USB_DC_DIS_RATE,
-	.dc_disconnect_mask = 0xf,
-	.usb_dc_disconnect_at_page0 = true,
-	.do_toggle = true,
-	.do_toggle_driving = false,
-	.driving_updated_for_dev_dis = 0xf,
-	.use_default_parameter = false,
-	.is_double_sensitivity_mode = false,
-};
-
-static const struct phy_cfg rtd1395_phy_cfg = {
-	.page0_size = MAX_USB_PHY_PAGE0_DATA_SIZE,
-	.page0 = { [4] = {0xe4, 0xac},
-		  [13] = {0xf5, 0x00},
-		  [15] = {0xf7, 0x02}, },
-	.page1_size = 8,
-	.page1 = { /* default parameter */ },
-	.page2_size = 0,
-	.page2 = { /* no parameter */ },
-	.num_phy = 1,
-	.check_efuse = false,
-	.check_efuse_version = CHECK_EFUSE_V1,
-	.efuse_dc_driving_rate = 1,
-	.dc_driving_mask = 0xf,
-	.efuse_dc_disconnect_rate = EFUS_USB_DC_DIS_RATE,
-	.dc_disconnect_mask = 0xf,
-	.usb_dc_disconnect_at_page0 = true,
-	.do_toggle = true,
-	.do_toggle_driving = false,
-	.driving_updated_for_dev_dis = 0xf,
-	.use_default_parameter = false,
-	.is_double_sensitivity_mode = false,
-};
-
-static const struct phy_cfg rtd1395_phy_cfg_2port = {
-	.page0_size = MAX_USB_PHY_PAGE0_DATA_SIZE,
-	.page0 = { [4] = {0xe4, 0xac},
-		  [13] = {0xf5, 0x00},
-		  [15] = {0xf7, 0x02}, },
-	.page1_size = 8,
-	.page1 = { /* default parameter */ },
-	.page2_size = 0,
-	.page2 = { /* no parameter */ },
-	.num_phy = 2,
-	.check_efuse = false,
-	.check_efuse_version = CHECK_EFUSE_V1,
-	.efuse_dc_driving_rate = 1,
-	.dc_driving_mask = 0xf,
-	.efuse_dc_disconnect_rate = EFUS_USB_DC_DIS_RATE,
-	.dc_disconnect_mask = 0xf,
-	.usb_dc_disconnect_at_page0 = true,
-	.do_toggle = true,
-	.do_toggle_driving = false,
-	.driving_updated_for_dev_dis = 0xf,
-	.use_default_parameter = false,
-	.is_double_sensitivity_mode = false,
-};
-
-static const struct phy_cfg rtd1619_phy_cfg = {
-	.page0_size = MAX_USB_PHY_PAGE0_DATA_SIZE,
-	.page0 = { [4] = {0xe4, 0x68}, },
-	.page1_size = 8,
-	.page1 = { /* default parameter */ },
-	.page2_size = 0,
-	.page2 = { /* no parameter */ },
-	.num_phy = 1,
-	.check_efuse = true,
-	.check_efuse_version = CHECK_EFUSE_V1,
-	.efuse_dc_driving_rate = 1,
-	.dc_driving_mask = 0xf,
-	.efuse_dc_disconnect_rate = EFUS_USB_DC_DIS_RATE,
-	.dc_disconnect_mask = 0xf,
-	.usb_dc_disconnect_at_page0 = true,
-	.do_toggle = true,
-	.do_toggle_driving = false,
-	.driving_updated_for_dev_dis = 0xf,
-	.use_default_parameter = false,
-	.is_double_sensitivity_mode = false,
-};
-
-static const struct phy_cfg rtd1319_phy_cfg = {
-	.page0_size = MAX_USB_PHY_PAGE0_DATA_SIZE,
-	.page0 = { [0] = {0xe0, 0x18},
-		   [4] = {0xe4, 0x6a},
-		   [7] = {0xe7, 0x71},
-		  [13] = {0xf5, 0x15},
-		  [15] = {0xf7, 0x32}, },
-	.page1_size = 8,
-	.page1 = { [3] = {0xe3, 0x44}, },
-	.page2_size = MAX_USB_PHY_PAGE2_DATA_SIZE,
-	.page2 = { [0] = {0xe0, 0x01}, },
-	.num_phy = 1,
-	.check_efuse = true,
-	.check_efuse_version = CHECK_EFUSE_V1,
-	.efuse_dc_driving_rate = 1,
-	.dc_driving_mask = 0xf,
-	.efuse_dc_disconnect_rate = EFUS_USB_DC_DIS_RATE,
-	.dc_disconnect_mask = 0xf,
-	.usb_dc_disconnect_at_page0 = true,
-	.do_toggle = true,
-	.do_toggle_driving = true,
-	.driving_updated_for_dev_dis = 0xf,
-	.use_default_parameter = false,
-	.is_double_sensitivity_mode = true,
-};
-
-static const struct phy_cfg rtd1312c_phy_cfg = {
-	.page0_size = MAX_USB_PHY_PAGE0_DATA_SIZE,
-	.page0 = { [0] = {0xe0, 0x14},
-		   [4] = {0xe4, 0x67},
-		   [5] = {0xe5, 0x55}, },
-	.page1_size = 8,
-	.page1 = { [3] = {0xe3, 0x23},
-		   [6] = {0xe6, 0x58}, },
-	.page2_size = MAX_USB_PHY_PAGE2_DATA_SIZE,
-	.page2 = { /* default parameter */ },
-	.num_phy = 1,
-	.check_efuse = true,
-	.check_efuse_version = CHECK_EFUSE_V1,
-	.efuse_dc_driving_rate = 1,
-	.dc_driving_mask = 0xf,
-	.efuse_dc_disconnect_rate = EFUS_USB_DC_DIS_RATE,
-	.dc_disconnect_mask = 0xf,
-	.usb_dc_disconnect_at_page0 = true,
-	.do_toggle = true,
-	.do_toggle_driving = true,
-	.driving_updated_for_dev_dis = 0xf,
-	.use_default_parameter = false,
-	.is_double_sensitivity_mode = true,
-};
-
-static const struct phy_cfg rtd1619b_phy_cfg = {
-	.page0_size = MAX_USB_PHY_PAGE0_DATA_SIZE,
-	.page0 = { [0] = {0xe0, 0xa3},
-		   [4] = {0xe4, 0x88},
-		   [5] = {0xe5, 0x4f},
-		   [6] = {0xe6, 0x02}, },
-	.page1_size = 8,
-	.page1 = { [3] = {0xe3, 0x64}, },
-	.page2_size = MAX_USB_PHY_PAGE2_DATA_SIZE,
-	.page2 = { [7] = {0xe7, 0x45}, },
-	.num_phy = 1,
-	.check_efuse = true,
-	.check_efuse_version = CHECK_EFUSE_V1,
-	.efuse_dc_driving_rate = EFUS_USB_DC_CAL_RATE,
-	.dc_driving_mask = 0x1f,
-	.efuse_dc_disconnect_rate = EFUS_USB_DC_DIS_RATE,
-	.dc_disconnect_mask = 0xf,
-	.usb_dc_disconnect_at_page0 = false,
-	.do_toggle = true,
-	.do_toggle_driving = true,
-	.driving_updated_for_dev_dis = 0x8,
-	.use_default_parameter = false,
-	.is_double_sensitivity_mode = true,
-};
-
-static const struct phy_cfg rtd1319d_phy_cfg = {
-	.page0_size = MAX_USB_PHY_PAGE0_DATA_SIZE,
-	.page0 = { [0] = {0xe0, 0xa3},
-		   [4] = {0xe4, 0x8e},
-		   [5] = {0xe5, 0x4f},
-		   [6] = {0xe6, 0x02}, },
-	.page1_size = MAX_USB_PHY_PAGE1_DATA_SIZE,
-	.page1 = { [14] = {0xf5, 0x1}, },
-	.page2_size = MAX_USB_PHY_PAGE2_DATA_SIZE,
-	.page2 = { [7] = {0xe7, 0x44}, },
-	.check_efuse = true,
-	.num_phy = 1,
-	.check_efuse_version = CHECK_EFUSE_V1,
-	.efuse_dc_driving_rate = EFUS_USB_DC_CAL_RATE,
-	.dc_driving_mask = 0x1f,
-	.efuse_dc_disconnect_rate = EFUS_USB_DC_DIS_RATE,
-	.dc_disconnect_mask = 0xf,
-	.usb_dc_disconnect_at_page0 = false,
-	.do_toggle = true,
-	.do_toggle_driving = false,
-	.driving_updated_for_dev_dis = 0x8,
-	.use_default_parameter = false,
-	.is_double_sensitivity_mode = true,
-};
-
-static const struct phy_cfg rtd1315e_phy_cfg = {
-	.page0_size = MAX_USB_PHY_PAGE0_DATA_SIZE,
-	.page0 = { [0] = {0xe0, 0xa3},
-		   [4] = {0xe4, 0x8c},
-		   [5] = {0xe5, 0x4f},
-		   [6] = {0xe6, 0x02}, },
-	.page1_size = MAX_USB_PHY_PAGE1_DATA_SIZE,
-	.page1 = { [3] = {0xe3, 0x7f},
-		  [14] = {0xf5, 0x01}, },
-	.page2_size = MAX_USB_PHY_PAGE2_DATA_SIZE,
-	.page2 = { [7] = {0xe7, 0x44}, },
-	.num_phy = 1,
-	.check_efuse = true,
-	.check_efuse_version = CHECK_EFUSE_V2,
-	.efuse_dc_driving_rate = EFUS_USB_DC_CAL_RATE,
-	.dc_driving_mask = 0x1f,
-	.efuse_dc_disconnect_rate = EFUS_USB_DC_DIS_RATE,
-	.dc_disconnect_mask = 0xf,
-	.usb_dc_disconnect_at_page0 = false,
-	.do_toggle = true,
-	.do_toggle_driving = false,
-	.driving_updated_for_dev_dis = 0x8,
-	.use_default_parameter = false,
-	.is_double_sensitivity_mode = true,
-};
-
-static const struct of_device_id usbphy_rtk_dt_match[] = {
-	{ .compatible = "realtek,rtd1295-usb2phy", .data = &rtd1295_phy_cfg },
-	{ .compatible = "realtek,rtd1312c-usb2phy", .data = &rtd1312c_phy_cfg },
-	{ .compatible = "realtek,rtd1315e-usb2phy", .data = &rtd1315e_phy_cfg },
-	{ .compatible = "realtek,rtd1319-usb2phy", .data = &rtd1319_phy_cfg },
-	{ .compatible = "realtek,rtd1319d-usb2phy", .data = &rtd1319d_phy_cfg },
-	{ .compatible = "realtek,rtd1395-usb2phy", .data = &rtd1395_phy_cfg },
-	{ .compatible = "realtek,rtd1395-usb2phy-2port", .data = &rtd1395_phy_cfg_2port },
-	{ .compatible = "realtek,rtd1619-usb2phy", .data = &rtd1619_phy_cfg },
-	{ .compatible = "realtek,rtd1619b-usb2phy", .data = &rtd1619b_phy_cfg },
-	{},
-};
-MODULE_DEVICE_TABLE(of, usbphy_rtk_dt_match);
-
-static struct platform_driver rtk_usb2phy_driver = {
-	.probe		= rtk_usb2phy_probe,
-	.remove_new	= rtk_usb2phy_remove,
-	.driver		= {
-		.name	= "rtk-usb2phy",
-		.of_match_table = usbphy_rtk_dt_match,
-	},
-};
-
-module_platform_driver(rtk_usb2phy_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform: rtk-usb2phy");
-MODULE_AUTHOR("Stanley Chang <stanley_chang@realtek.com>");
-MODULE_DESCRIPTION("Realtek usb 2.0 phy driver");
-- 
2.41.0

[PATCH 3/3] Revert "usb: phy: add usb phy notify port status API"

[Johan Hovold]

This reverts commit a08799cf17c22375752abfad3b4a2b34b3acb287.

The recently added Realtek PHY drivers depend on the new port status
notification mechanism which was built on the deprecated USB PHY
implementation and devicetree binding.

Specifically, using these PHYs would require describing the very same
PHY using both the generic "phy" property and the deprecated "usb-phy"
property which is clearly wrong.

We should not be building new functionality on top of the legacy USB PHY
implementation even if it is currently stuck in some kind of
transitional limbo.

Revert the new notification interface which is broken by design.

Fixes: a08799cf17c2 ("usb: phy: add usb phy notify port status API")
Cc: stable@vger.kernel.org      # 6.6
Cc: Stanley Chang <stanley_chang@realtek.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/usb/core/hub.c  | 23 -----------------------
 include/linux/usb/phy.h | 13 -------------
 2 files changed, 36 deletions(-)

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 0ff47eeffb49..dfc30cebd4c4 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -622,29 +622,6 @@ static int hub_ext_port_status(struct usb_hub *hub, int port1, int type,
 		ret = 0;
 	}
 	mutex_unlock(&hub->status_mutex);
-
-	/*
-	 * There is no need to lock status_mutex here, because status_mutex
-	 * protects hub->status, and the phy driver only checks the port
-	 * status without changing the status.
-	 */
-	if (!ret) {
-		struct usb_device *hdev = hub->hdev;
-
-		/*
-		 * Only roothub will be notified of port state changes,
-		 * since the USB PHY only cares about changes at the next
-		 * level.
-		 */
-		if (is_root_hub(hdev)) {
-			struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
-
-			if (hcd->usb_phy)
-				usb_phy_notify_port_status(hcd->usb_phy,
-							   port1 - 1, *status, *change);
-		}
-	}
-
 	return ret;
 }
 
diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
index b513749582d7..e4de6bc1f69b 100644
--- a/include/linux/usb/phy.h
+++ b/include/linux/usb/phy.h
@@ -144,10 +144,6 @@ struct usb_phy {
 	 */
 	int	(*set_wakeup)(struct usb_phy *x, bool enabled);
 
-	/* notify phy port status change */
-	int	(*notify_port_status)(struct usb_phy *x, int port,
-				      u16 portstatus, u16 portchange);
-
 	/* notify phy connect status change */
 	int	(*notify_connect)(struct usb_phy *x,
 			enum usb_device_speed speed);
@@ -320,15 +316,6 @@ usb_phy_set_wakeup(struct usb_phy *x, bool enabled)
 		return 0;
 }
 
-static inline int
-usb_phy_notify_port_status(struct usb_phy *x, int port, u16 portstatus, u16 portchange)
-{
-	if (x && x->notify_port_status)
-		return x->notify_port_status(x, port, portstatus, portchange);
-	else
-		return 0;
-}
-
 static inline int
 usb_phy_notify_connect(struct usb_phy *x, enum usb_device_speed speed)
 {
-- 
2.41.0

Re: [PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[Greg Kroah-Hartman]

On Mon, Nov 06, 2023 at 12:06:51PM +0100, Johan Hovold wrote:
> The recently added Realtek PHY drivers depend on the new port status
> notification mechanism which was built on the deprecated USB PHY
> implementation and devicetree binding.
> 
> Specifically, using these PHYs would require describing the very same
> PHY using both the generic "phy" property and the deprecated "usb-phy"
> property which is clearly wrong.
> 
> We should not be building new functionality on top of the legacy USB PHY
> implementation even if it is currently stuck in some kind of
> transitional limbo.
> 
> Revert the new Realtek PHY drivers for now so that the port status
> notification interface can be reverted and replaced before we dig
> ourselves into an even deeper hole with this PHY mess.
> 
> Note that there are no upstream users of these PHYs and the drivers were
> only included in 6.6 so there should still be time to undo this.

No users of these phy drivers yet?  Why were they added?

> Preferably these should go in through Greg's tree for 6.7-rc1.

I'll be glad to take this if I can get an ack for it.

thanks,

greg k-h

Re: [PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[Vinod Koul]

On 06-11-23, 12:15, Greg Kroah-Hartman wrote:
> On Mon, Nov 06, 2023 at 12:06:51PM +0100, Johan Hovold wrote:
> > The recently added Realtek PHY drivers depend on the new port status
> > notification mechanism which was built on the deprecated USB PHY
> > implementation and devicetree binding.
> > 
> > Specifically, using these PHYs would require describing the very same
> > PHY using both the generic "phy" property and the deprecated "usb-phy"
> > property which is clearly wrong.
> > 
> > We should not be building new functionality on top of the legacy USB PHY
> > implementation even if it is currently stuck in some kind of
> > transitional limbo.
> > 
> > Revert the new Realtek PHY drivers for now so that the port status
> > notification interface can be reverted and replaced before we dig
> > ourselves into an even deeper hole with this PHY mess.
> > 
> > Note that there are no upstream users of these PHYs and the drivers were
> > only included in 6.6 so there should still be time to undo this.
> 
> No users of these phy drivers yet?  Why were they added?

Not sure why, they didnt go thru phy ss!

> 
> > Preferably these should go in through Greg's tree for 6.7-rc1.
> 
> I'll be glad to take this if I can get an ack for it.

Pls do drop this:

Acked-by: Vinod Koul <vkoul@kernel.org>

-- 
~Vinod

Re: [PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[Johan Hovold]

On Mon, Nov 06, 2023 at 12:15:59PM +0100, Greg Kroah-Hartman wrote:
> On Mon, Nov 06, 2023 at 12:06:51PM +0100, Johan Hovold wrote:
> > The recently added Realtek PHY drivers depend on the new port status
> > notification mechanism which was built on the deprecated USB PHY
> > implementation and devicetree binding.
> > 
> > Specifically, using these PHYs would require describing the very same
> > PHY using both the generic "phy" property and the deprecated "usb-phy"
> > property which is clearly wrong.
> > 
> > We should not be building new functionality on top of the legacy USB PHY
> > implementation even if it is currently stuck in some kind of
> > transitional limbo.
> > 
> > Revert the new Realtek PHY drivers for now so that the port status
> > notification interface can be reverted and replaced before we dig
> > ourselves into an even deeper hole with this PHY mess.
> > 
> > Note that there are no upstream users of these PHYs and the drivers were
> > only included in 6.6 so there should still be time to undo this.
> 
> No users of these phy drivers yet?  Why were they added?

The devicetree bindings were also merged in 6.6 (and are left in place),
but there are no devicetrees that actually use these new bindings in
mainline yet.

> > Preferably these should go in through Greg's tree for 6.7-rc1.
> 
> I'll be glad to take this if I can get an ack for it.

They went in through your tree, but note that you may now get a conflict
with 

	7e909370a5cd ("phy: realtek: Replace of_device.h with explicit includes")

in the phy tree.

Johan

Re: [PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[Greg Kroah-Hartman]

On Mon, Nov 06, 2023 at 04:54:45PM +0530, Vinod Koul wrote:
> On 06-11-23, 12:15, Greg Kroah-Hartman wrote:
> > On Mon, Nov 06, 2023 at 12:06:51PM +0100, Johan Hovold wrote:
> > > The recently added Realtek PHY drivers depend on the new port status
> > > notification mechanism which was built on the deprecated USB PHY
> > > implementation and devicetree binding.
> > > 
> > > Specifically, using these PHYs would require describing the very same
> > > PHY using both the generic "phy" property and the deprecated "usb-phy"
> > > property which is clearly wrong.
> > > 
> > > We should not be building new functionality on top of the legacy USB PHY
> > > implementation even if it is currently stuck in some kind of
> > > transitional limbo.
> > > 
> > > Revert the new Realtek PHY drivers for now so that the port status
> > > notification interface can be reverted and replaced before we dig
> > > ourselves into an even deeper hole with this PHY mess.
> > > 
> > > Note that there are no upstream users of these PHYs and the drivers were
> > > only included in 6.6 so there should still be time to undo this.
> > 
> > No users of these phy drivers yet?  Why were they added?
> 
> Not sure why, they didnt go thru phy ss!
> 
> > 
> > > Preferably these should go in through Greg's tree for 6.7-rc1.
> > 
> > I'll be glad to take this if I can get an ack for it.
> 
> Pls do drop this:
> 
> Acked-by: Vinod Koul <vkoul@kernel.org>

Thanks, now applied.

greg k-h

Re: [PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[Greg Kroah-Hartman]

On Mon, Nov 06, 2023 at 12:25:34PM +0100, Johan Hovold wrote:
> On Mon, Nov 06, 2023 at 12:15:59PM +0100, Greg Kroah-Hartman wrote:
> > On Mon, Nov 06, 2023 at 12:06:51PM +0100, Johan Hovold wrote:
> > > The recently added Realtek PHY drivers depend on the new port status
> > > notification mechanism which was built on the deprecated USB PHY
> > > implementation and devicetree binding.
> > > 
> > > Specifically, using these PHYs would require describing the very same
> > > PHY using both the generic "phy" property and the deprecated "usb-phy"
> > > property which is clearly wrong.
> > > 
> > > We should not be building new functionality on top of the legacy USB PHY
> > > implementation even if it is currently stuck in some kind of
> > > transitional limbo.
> > > 
> > > Revert the new Realtek PHY drivers for now so that the port status
> > > notification interface can be reverted and replaced before we dig
> > > ourselves into an even deeper hole with this PHY mess.
> > > 
> > > Note that there are no upstream users of these PHYs and the drivers were
> > > only included in 6.6 so there should still be time to undo this.
> > 
> > No users of these phy drivers yet?  Why were they added?
> 
> The devicetree bindings were also merged in 6.6 (and are left in place),
> but there are no devicetrees that actually use these new bindings in
> mainline yet.
> 
> > > Preferably these should go in through Greg's tree for 6.7-rc1.
> > 
> > I'll be glad to take this if I can get an ack for it.
> 
> They went in through your tree, but note that you may now get a conflict
> with 
> 
> 	7e909370a5cd ("phy: realtek: Replace of_device.h with explicit includes")
> 
> in the phy tree.

I fixed it up by hand, should be good now, thanks.

greg k-h

RE: [PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[Stanley Chang[昌育德]]

Hi Johan and Vinod,

I modified the Realtek phy to solve this issue and only use the generic PHY.
And submitted these patches today as follows
https://lore.kernel.org/linux-usb/20231107063518.27824-1-stanley_chang@realtek.com/
https://lore.kernel.org/linux-usb/20231107063518.27824-2-stanley_chang@realtek.com/
https://lore.kernel.org/linux-usb/20231107063518.27824-3-stanley_chang@realtek.com/
https://lore.kernel.org/linux-usb/20231107063518.27824-4-stanley_chang@realtek.com/

I don't think this patch is needed to revert a08799cf17c2 ("usb:phy: New usb phy notification port status API").

Thanks,
Stanley

> On 06-11-23, 12:15, Greg Kroah-Hartman wrote:
> > On Mon, Nov 06, 2023 at 12:06:51PM +0100, Johan Hovold wrote:
> > > The recently added Realtek PHY drivers depend on the new port status
> > > notification mechanism which was built on the deprecated USB PHY
> > > implementation and devicetree binding.
> > >
> > > Specifically, using these PHYs would require describing the very
> > > same PHY using both the generic "phy" property and the deprecated
> "usb-phy"
> > > property which is clearly wrong.
> > >
> > > We should not be building new functionality on top of the legacy USB
> > > PHY implementation even if it is currently stuck in some kind of
> > > transitional limbo.
> > >
> > > Revert the new Realtek PHY drivers for now so that the port status
> > > notification interface can be reverted and replaced before we dig
> > > ourselves into an even deeper hole with this PHY mess.
> > >
> > > Note that there are no upstream users of these PHYs and the drivers
> > > were only included in 6.6 so there should still be time to undo this.
> >
> > No users of these phy drivers yet?  Why were they added?
> 
> Not sure why, they didnt go thru phy ss!
> 
> >
> > > Preferably these should go in through Greg's tree for 6.7-rc1.
> >
> > I'll be glad to take this if I can get an ack for it.
> 
> Pls do drop this:
> 
> Acked-by: Vinod Koul <vkoul@kernel.org>
> 
> --
> ~Vinod

Re: [PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[Greg Kroah-Hartman]

On Tue, Nov 07, 2023 at 06:44:26AM +0000, Stanley Chang[昌育德] wrote:
> Hi Johan and Vinod,
> 
> I modified the Realtek phy to solve this issue and only use the generic PHY.
> And submitted these patches today as follows
> https://lore.kernel.org/linux-usb/20231107063518.27824-1-stanley_chang@realtek.com/
> https://lore.kernel.org/linux-usb/20231107063518.27824-2-stanley_chang@realtek.com/
> https://lore.kernel.org/linux-usb/20231107063518.27824-3-stanley_chang@realtek.com/
> https://lore.kernel.org/linux-usb/20231107063518.27824-4-stanley_chang@realtek.com/
> 
> I don't think this patch is needed to revert a08799cf17c2 ("usb:phy: New usb phy notification port status API").

I had already applied those reverts yesterday, but forgot to push them
out (sorry about that, now fixed.)  Let's start over here and you can
rebase your new series on the 6.7-rc1.

thanks,

greg k-h

RE: [PATCH 0/3] Revert "usb: phy: add usb phy notify port status API"

[Stanley Chang[昌育德]]

Hi Greg,

> On Tue, Nov 07, 2023 at 06:44:26AM +0000, Stanley Chang[昌育德] wrote:
> > Hi Johan and Vinod,
> >
> > I modified the Realtek phy to solve this issue and only use the generic PHY.
> > And submitted these patches today as follows
> > https://lore.kernel.org/linux-usb/20231107063518.27824-1-stanley_chang
> > @realtek.com/
> > https://lore.kernel.org/linux-usb/20231107063518.27824-2-stanley_chang
> > @realtek.com/
> > https://lore.kernel.org/linux-usb/20231107063518.27824-3-stanley_chang
> > @realtek.com/
> > https://lore.kernel.org/linux-usb/20231107063518.27824-4-stanley_chang
> > @realtek.com/
> >
> > I don't think this patch is needed to revert a08799cf17c2 ("usb:phy: New usb
> phy notification port status API").
> 
> I had already applied those reverts yesterday, but forgot to push them out
> (sorry about that, now fixed.)  Let's start over here and you can rebase your
> new series on the 6.7-rc1.

Okay, I will resubmit later.

Thanks,
Stanley

> thanks,
> 
> greg k-h