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Message-ID: <20230607062500.24669-2-stanley_chang@realtek.com>
Date: Wed, 7 Jun 2023 14:24:38 +0800
From: Stanley Chang <stanley_chang@...ltek.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC: Stanley Chang <stanley_chang@...ltek.com>,
Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Alan Stern <stern@...land.harvard.edu>,
"Michael Grzeschik" <m.grzeschik@...gutronix.de>,
Mathias Nyman <mathias.nyman@...ux.intel.com>,
Bagas Sanjaya <bagasdotme@...il.com>,
Matthias Kaehlcke <mka@...omium.org>,
Ray Chi <raychi@...gle.com>,
"Flavio Suligoi" <f.suligoi@...m.it>,
<linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>
Subject: [PATCH v3 2/5] phy: realtek: usb: Add driver for the Realtek SoC USB 2.0 PHY
Realtek DHC (digital home center) RTD SoCs support DWC3 XHCI USB
controller. Added the driver to drive the USB 2.0 PHY transceivers.
Signed-off-by: Stanley Chang <stanley_chang@...ltek.com>
---
v2 to v3 change:
1. Broken down into two patches, one for each of USB 2 & 3 PHY.
2. Removed parameter v1 support for simplification.
3. Use remove_new for driver remove callback.
v1 to v2 change:
1. Move the drivers to drivers/phy/ for generic phy driver
2. Use the generic phy driver api to initialize phy
3. Use readl/writel to instead phy_read/phy_write directly.
4. Use read_poll_timeout() in function utmi_wait_register.
5. Revised some coding styles.
6. fix the compiler warning for kernel test robot.
---
drivers/phy/Kconfig | 1 +
drivers/phy/Makefile | 1 +
drivers/phy/realtek/Kconfig | 13 +
drivers/phy/realtek/Makefile | 2 +
drivers/phy/realtek/phy-rtk-usb2.c | 1914 ++++++++++++++++++++++++++++
5 files changed, 1931 insertions(+)
create mode 100644 drivers/phy/realtek/Kconfig
create mode 100644 drivers/phy/realtek/Makefile
create mode 100644 drivers/phy/realtek/phy-rtk-usb2.c
diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig
index f46e3148d286..6d04a0029c6c 100644
--- a/drivers/phy/Kconfig
+++ b/drivers/phy/Kconfig
@@ -86,6 +86,7 @@ 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 54f312c10a40..ba7c100b14fc 100644
--- a/drivers/phy/Makefile
+++ b/drivers/phy/Makefile
@@ -26,6 +26,7 @@ obj-y += allwinner/ \
mscc/ \
qualcomm/ \
ralink/ \
+ realtek/ \
renesas/ \
rockchip/ \
samsung/ \
diff --git a/drivers/phy/realtek/Kconfig b/drivers/phy/realtek/Kconfig
new file mode 100644
index 000000000000..76e31f6abdee
--- /dev/null
+++ b/drivers/phy/realtek/Kconfig
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Phy drivers for Realtek platforms
+#
+config PHY_RTK_RTD_USB2PHY
+ tristate "Realtek RTD USB2 PHY Transceiver Driver"
+ select GENERIC_PHY
+ select USB_PHY
+ 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.
diff --git a/drivers/phy/realtek/Makefile b/drivers/phy/realtek/Makefile
new file mode 100644
index 000000000000..cf5d440841a2
--- /dev/null
+++ b/drivers/phy/realtek/Makefile
@@ -0,0 +1,2 @@
+# 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
new file mode 100644
index 000000000000..0538424b9cab
--- /dev/null
+++ b/drivers/phy/realtek/phy-rtk-usb2.c
@@ -0,0 +1,1914 @@
+// 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_PORTS 4
+#define MAX_USB_PHY_PAGE0_DATA_SIZE 16
+#define MAX_USB_PHY_PAGE1_DATA_SIZE 8
+#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_0xE7 0xe7
+#define PAGE1_0xE0 0xe0
+#define PAGE1_0xE2 0xe2
+
+/* mapping 0xE0 to 0 ... 0xE7 to 7, 0xF0 to 8 ,,, 0xF7 to 15 */
+#define PAGE_ADDR_MAP_ARRAY_INDEX(addr) \
+ (((addr - PAGE_START)&0x7) + \
+ (((addr - PAGE_START)&0x10)>>1))
+#define ARRAY_INDEX_MAP_PAGE_ADDR(index) \
+ (((index + PAGE_START)&0x7) + \
+ (((index&0x8)<<1) + PAGE_START))
+
+struct reg_addr {
+ void __iomem *reg_wrap_vstatus;
+ void __iomem *reg_gusb2phyacc0;
+ int vstatus_index;
+};
+
+struct phy_parameter {
+ u8 addr;
+ u8 data;
+};
+
+struct phy_data {
+ int page0_size;
+ struct phy_parameter *page0;
+ int page1_size;
+ struct phy_parameter *page1;
+ int page2_size;
+ struct phy_parameter *page2;
+
+ bool check_efuse;
+ int check_efuse_version;
+#define CHECK_EFUSE_V1 1
+#define CHECK_EFUSE_V2 2
+ int8_t efuse_usb_dc_cal;
+ int efuse_usb_dc_cal_rate;
+ int usb_dc_cal_mask;
+ int8_t efuse_usb_dc_dis;
+ int efuse_usb_dc_dis_rate;
+ int usb_dc_dis_mask;
+ bool usb_dc_dis_at_page0;
+ bool do_toggle;
+ bool do_toggle_driving;
+ int disconnect_driving_updated;
+ bool use_default_parameter;
+ bool is_double_sensitivity_mode;
+ bool ldo_force_enable;
+ bool ldo_enable;
+ s32 ldo_driving_compensate;
+ s32 driving_compensate;
+};
+
+struct rtk_usb_phy {
+ struct usb_phy phy;
+ struct device *dev;
+ struct regmap *usb_ctrl_regs;
+
+ int phyN;
+ void *reg_addr;
+ void *phy_data;
+
+ 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 char rtk_usb_phy_read(struct reg_addr *regAddr, char addr)
+{
+ void __iomem *reg_gusb2phyacc0 = regAddr->reg_gusb2phyacc0;
+ unsigned int regVal;
+ 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 */
+ regVal = PHY_NEW_REG_REQ | (GET_LOW_NIBBLE(addr) << PHY_VCTRL_SHIFT);
+ writel(regVal, 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 */
+ regVal = PHY_NEW_REG_REQ | (GET_HIGH_NIBBLE(addr) << PHY_VCTRL_SHIFT);
+ writel(regVal, reg_gusb2phyacc0);
+ ret = utmi_wait_register(reg_gusb2phyacc0, PHY_VSTS_BUSY, 0);
+ if (ret)
+ return (char)ret;
+
+ regVal = readl(reg_gusb2phyacc0);
+
+ return (char) (regVal & PHY_REG_DATA_MASK);
+}
+
+static int rtk_usb_phy_write(struct reg_addr *regAddr, char addr, char data)
+{
+ unsigned int regVal;
+ void __iomem *reg_wrap_vstatus = regAddr->reg_wrap_vstatus;
+ void __iomem *reg_gusb2phyacc0 = regAddr->reg_gusb2phyacc0;
+ int shift_bits = regAddr->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 */
+ regVal = PHY_NEW_REG_REQ | (GET_LOW_NIBBLE(addr) << PHY_VCTRL_SHIFT);
+
+ writel(regVal, 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 */
+ regVal = PHY_NEW_REG_REQ | (GET_HIGH_NIBBLE(addr) << PHY_VCTRL_SHIFT);
+
+ writel(regVal, reg_gusb2phyacc0);
+ ret = utmi_wait_register(reg_gusb2phyacc0, PHY_VSTS_BUSY, 0);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int rtk_usb_phy_set_page(struct reg_addr *regAddr, int page)
+{
+ switch (page) {
+ case 0:
+ return rtk_usb_phy_write(regAddr, SET_PAGE_OFFSET, SET_PAGE_0);
+ case 1:
+ return rtk_usb_phy_write(regAddr, SET_PAGE_OFFSET, SET_PAGE_1);
+ case 2:
+ return rtk_usb_phy_write(regAddr, SET_PAGE_OFFSET, SET_PAGE_2);
+ default:
+ pr_err("%s error page=%d\n", __func__, page);
+ }
+
+ return -1;
+}
+
+#define USB_CTRL 0x0 /* usb ctrl at 0x98007FB0 */
+#define ISO_USB_U2PHY_REG_LDO_PW (BIT(20) | BIT(21) | BIT(22) | BIT(23))
+
+static int control_phy_power(struct rtk_usb_phy *rtk_phy,
+ struct phy_data *phy_data, struct reg_addr *regAddr)
+{
+ int use_ldo = 0;
+ unsigned int val;
+
+ if (!rtk_phy->usb_ctrl_regs) {
+ dev_info(rtk_phy->dev, "%s No usb_ctrl_regs can't set USB_CTRL\n",
+ __func__);
+ return use_ldo;
+ }
+
+ if (regmap_read(rtk_phy->usb_ctrl_regs, USB_CTRL, &val)) {
+ dev_err(rtk_phy->dev, "%s Get USB_CTRL fail\n", __func__);
+ return use_ldo;
+ }
+
+ if ((val & ISO_USB_U2PHY_REG_LDO_PW) == ISO_USB_U2PHY_REG_LDO_PW) {
+ dev_info(rtk_phy->dev, "%s phy use ldo power! (USB_CTRL val=0x%x)\n",
+ __func__, val);
+ use_ldo = 1;
+ goto out;
+ }
+
+ if (phy_data->ldo_force_enable) {
+ regmap_update_bits(rtk_phy->usb_ctrl_regs, USB_CTRL,
+ (unsigned int)ISO_USB_U2PHY_REG_LDO_PW,
+ (unsigned int)ISO_USB_U2PHY_REG_LDO_PW);
+ use_ldo = 1;
+
+ dev_info(rtk_phy->dev, "%s phy %s then turn on ldo! USB_CTRL val=0x%x\n",
+ __func__,
+ phy_data->ldo_force_enable ?
+ "ldo_force_enable":"no power",
+ val);
+ }
+
+out:
+ return use_ldo;
+}
+
+static u8 __updated_page0_0xe4_parameter(struct phy_data *phy_data, u8 data)
+{
+ u8 val;
+ s32 __val;
+ s32 driving_compensate = 0;
+ s32 usb_dc_cal_mask = phy_data->usb_dc_cal_mask;
+
+ if (phy_data->check_efuse_version == CHECK_EFUSE_V1) {
+ if (phy_data->ldo_enable)
+ driving_compensate = phy_data->ldo_driving_compensate;
+
+ __val = (s32)(data & usb_dc_cal_mask) + driving_compensate
+ + phy_data->efuse_usb_dc_cal;
+ } else { /* for CHECK_EFUSE_V2 or no efuse */
+ driving_compensate = phy_data->driving_compensate;
+
+ if (phy_data->efuse_usb_dc_cal)
+ __val = (s32)((phy_data->efuse_usb_dc_cal & usb_dc_cal_mask)
+ + driving_compensate);
+ else
+ __val = (s32)(data & usb_dc_cal_mask);
+ }
+
+ if (__val > usb_dc_cal_mask)
+ __val = usb_dc_cal_mask;
+ else if (__val < 0)
+ __val = 0;
+
+ val = (data & (~usb_dc_cal_mask)) | (__val & usb_dc_cal_mask);
+
+ return val;
+}
+
+static u8 __updated_dc_disconnect_level_page0_0xe4(struct phy_data *phy_data,
+ u8 data)
+{
+ u8 val;
+ s32 __val;
+ s32 usb_dc_dis_mask = phy_data->usb_dc_dis_mask;
+ int offset = 4;
+
+ __val = (s32)((data >> offset) & usb_dc_dis_mask)
+ + phy_data->efuse_usb_dc_dis;
+
+ if (__val > usb_dc_dis_mask)
+ __val = usb_dc_dis_mask;
+ else if (__val < 0)
+ __val = 0;
+
+ val = (data & (~(usb_dc_dis_mask << offset))) |
+ (__val & usb_dc_dis_mask) << offset;
+
+ return val;
+}
+
+/* updated disconnect level at page0 0xe4 */
+static void update_dc_disconnect_level_at_page0(struct rtk_usb_phy *rtk_phy,
+ struct reg_addr *regAddr,
+ struct phy_data *phy_data, bool isUpdate)
+{
+ struct phy_parameter *phy_parameter_page;
+ int i;
+
+ /* Set page 0 */
+ phy_parameter_page = phy_data->page0;
+ rtk_usb_phy_set_page(regAddr, 0);
+
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(PAGE0_0xE4);
+ if (i < phy_data->page0_size) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+ u8 __data;
+ int offset = 4;
+ s32 usb_dc_dis_mask = phy_data->usb_dc_dis_mask;
+
+ __data = rtk_usb_phy_read(regAddr, addr);
+
+ /* keep default dc dis and real dc cal */
+ data = (data & ((usb_dc_dis_mask << offset))) |
+ (__data & (~(usb_dc_dis_mask << offset)));
+
+ if (isUpdate)
+ data = __updated_dc_disconnect_level_page0_0xe4(phy_data, data);
+
+ if (rtk_usb_phy_write(regAddr, addr, data)) {
+ dev_err(rtk_phy->dev,
+ "[%s:%d] Error page1 addr=0x%x value=0x%x\n",
+ __func__, __LINE__,
+ addr, data);
+ return;
+ }
+
+ dev_info(rtk_phy->dev,
+ "%s to set Page0 0xE4=%x for dc disconnect level (%s)\n",
+ __func__,
+ rtk_usb_phy_read(regAddr, addr),
+ isUpdate?"Update":"restore");
+ } else {
+ dev_err(rtk_phy->dev,
+ "ERROR: %s %d index=%d addr Not PAGE0_0xE4\n",
+ __func__, __LINE__, i);
+ }
+}
+
+static u8 __updated_dc_disconnect_level_page1_0xe2(struct phy_data *phy_data,
+ u8 data)
+{
+ u8 val;
+ s32 __val;
+ s32 usb_dc_dis_mask = phy_data->usb_dc_dis_mask;
+
+ if (phy_data->check_efuse_version == CHECK_EFUSE_V1) {
+ __val = (s32)(data & usb_dc_dis_mask)
+ + phy_data->efuse_usb_dc_dis;
+ } else { /* for CHECK_EFUSE_V2 or no efuse */
+ if (phy_data->efuse_usb_dc_dis)
+ __val = (s32)(phy_data->efuse_usb_dc_dis & usb_dc_dis_mask);
+ else
+ __val = (s32)(data & usb_dc_dis_mask);
+ }
+
+ if (__val > usb_dc_dis_mask)
+ __val = usb_dc_dis_mask;
+ else if (__val < 0)
+ __val = 0;
+
+ val = (data & (~usb_dc_dis_mask)) | (__val & usb_dc_dis_mask);
+
+ return val;
+}
+
+/* updated disconnect level at page1 0xe2 */
+static void update_dc_disconnect_level_at_page1(struct rtk_usb_phy *rtk_phy,
+ struct reg_addr *regAddr,
+ struct phy_data *phy_data, bool isUpdate)
+{
+ struct phy_parameter *phy_parameter_page;
+ int i;
+
+ /* Set page 1 */
+ phy_parameter_page = phy_data->page1;
+ rtk_usb_phy_set_page(regAddr, 1);
+
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(PAGE1_0xE2);
+ if (i < phy_data->page1_size) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+ u8 __data;
+ s32 usb_dc_dis_mask = phy_data->usb_dc_dis_mask;
+
+ __data = rtk_usb_phy_read(regAddr, addr);
+
+ data = (data & usb_dc_dis_mask) | (__data & ~(usb_dc_dis_mask));
+
+ if (isUpdate)
+ data = __updated_dc_disconnect_level_page1_0xe2(phy_data, data);
+
+ if (rtk_usb_phy_write(regAddr, addr, data)) {
+ dev_err(rtk_phy->dev,
+ "[%s:%d] Error page1 addr=0x%x value=0x%x\n",
+ __func__, __LINE__,
+ addr, data);
+ return;
+ }
+
+ dev_info(rtk_phy->dev,
+ "%s to set Page1 0xE2=%x for dc disconnect level (%s)\n",
+ __func__,
+ rtk_usb_phy_read(regAddr, addr),
+ isUpdate?"Update":"restore");
+ } else {
+ dev_err(rtk_phy->dev,
+ "ERROR: %s %d index=%d addr Not PAGE1_0xE2\n",
+ __func__, __LINE__, i);
+ }
+}
+
+static void update_dc_disconnect_level(struct rtk_usb_phy *rtk_phy,
+ struct reg_addr *regAddr,
+ struct phy_data *phy_data, bool isUpdate)
+{
+ if (phy_data->usb_dc_dis_at_page0)
+ update_dc_disconnect_level_at_page0(
+ rtk_phy, regAddr, phy_data, isUpdate);
+ else
+ update_dc_disconnect_level_at_page1(
+ rtk_phy, regAddr, phy_data, isUpdate);
+}
+
+static void do_rtk_usb_phy_toggle(struct rtk_usb_phy *rtk_phy,
+ int index, bool isConnect)
+{
+ struct reg_addr *regAddr;
+ struct phy_data *phy_data;
+ struct phy_parameter *phy_parameter_page;
+ int i;
+
+ regAddr = &((struct reg_addr *)rtk_phy->reg_addr)[index];
+ phy_data = &((struct phy_data *)rtk_phy->phy_data)[index];
+
+ if (!phy_data->do_toggle)
+ goto out;
+
+ if (phy_data->is_double_sensitivity_mode)
+ goto do_toggle_driving;
+
+ /* Set page 0 */
+ phy_parameter_page = phy_data->page0;
+ rtk_usb_phy_set_page(regAddr, 0);
+
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(PAGE0_0xE7);
+ if (i < phy_data->page0_size) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ if (isConnect) {
+ rtk_usb_phy_write(regAddr, addr, data &
+ (~(BIT(4) | BIT(5) | BIT(6))));
+ } else {
+ rtk_usb_phy_write(regAddr, addr, data |
+ (BIT(4) | BIT(5) | BIT(6)));
+ }
+ dev_info(rtk_phy->dev,
+ "%s %sconnect to set Page0 0xE7=%x\n",
+ __func__,
+ isConnect?"":"dis",
+ rtk_usb_phy_read(regAddr, addr));
+ } else {
+ dev_err(rtk_phy->dev,
+ "ERROR: %s %d index=%d addr Not PAGE0_0xE7\n",
+ __func__, __LINE__, i);
+ }
+
+do_toggle_driving:
+
+ if (!phy_data->do_toggle_driving)
+ goto do_toggle;
+
+ /* Page 0 addr 0xE4 driving capability */
+
+ /* Set page 0 */
+ phy_parameter_page = phy_data->page0;
+ rtk_usb_phy_set_page(regAddr, 0);
+
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(PAGE0_0xE4);
+ if (i < phy_data->page0_size) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ data = __updated_page0_0xe4_parameter(phy_data, data);
+
+ if (isConnect) {
+ rtk_usb_phy_write(regAddr, addr, data);
+ } else {
+ u8 val;
+ s32 __val;
+ s32 driving_updated =
+ phy_data->disconnect_driving_updated;
+ s32 usb_dc_cal_mask = phy_data->usb_dc_cal_mask;
+
+ __val = (s32)(data & usb_dc_cal_mask) + driving_updated;
+
+ if (__val > usb_dc_cal_mask)
+ __val = usb_dc_cal_mask;
+ else if (__val < 0)
+ __val = 0;
+
+ val = (data & (~usb_dc_cal_mask)) | (__val & usb_dc_cal_mask);
+
+ rtk_usb_phy_write(regAddr, addr, val);
+ }
+ dev_info(rtk_phy->dev,
+ "%s %sconnect to set Page0 0xE4=%x for driving\n",
+ __func__,
+ isConnect?"":"dis",
+ rtk_usb_phy_read(regAddr, addr));
+ } else {
+ dev_err(rtk_phy->dev,
+ "ERROR: %s %d index=%d addr Not PAGE0_0xE4\n",
+ __func__, __LINE__, i);
+ }
+
+do_toggle:
+ /* restore dc disconnect level before toggle */
+ update_dc_disconnect_level(rtk_phy, regAddr, phy_data, false);
+
+ /* Set page 1 */
+ phy_parameter_page = phy_data->page1;
+ rtk_usb_phy_set_page(regAddr, 1);
+
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(PAGE1_0xE0);
+ if (i < phy_data->page1_size) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ dev_info(rtk_phy->dev,
+ "%s ########## to toggle PAGE1_0xE0 BIT(2)\n",
+ __func__);
+ rtk_usb_phy_write(regAddr, addr, data & (~BIT(2)));
+ mdelay(1);
+ rtk_usb_phy_write(regAddr, addr, data | (BIT(2)));
+ } else {
+ dev_err(rtk_phy->dev,
+ "ERROR: %s %d index=%d addr Not PAGE1_0xE0\n",
+ __func__, __LINE__, i);
+ }
+
+ /* update dc disconnect level after toggle */
+ update_dc_disconnect_level(rtk_phy, regAddr, phy_data, true);
+
+out:
+ return;
+}
+
+/* Get default phy parameter for update */
+static int __get_default_phy_parameter_for_updated(
+ struct rtk_usb_phy *rtk_phy, int index)
+{
+ int i;
+ struct reg_addr *regAddr;
+ struct phy_data *phy_data;
+ struct phy_parameter *phy_parameter_page;
+
+ regAddr = &((struct reg_addr *)rtk_phy->reg_addr)[index];
+ phy_data = &((struct phy_data *)rtk_phy->phy_data)[index];
+
+ phy_parameter_page = phy_data->page0;
+ rtk_usb_phy_set_page(regAddr, 0);
+
+ /* Get PAGE0_0xE4 default value */
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(PAGE0_0xE4);
+ if (i < phy_data->page0_size) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ if (!addr) {
+ addr = ARRAY_INDEX_MAP_PAGE_ADDR(i);
+ data = rtk_usb_phy_read(regAddr, addr);
+
+ phy_parameter->addr = addr;
+ phy_parameter->data = data;
+ dev_dbg(rtk_phy->dev,
+ "Get default addr %x value %x\n",
+ phy_parameter->addr,
+ phy_parameter->data);
+ }
+ }
+
+ /* Get PAGE0_0xE7 default value */
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(PAGE0_0xE7);
+ if (i < phy_data->page0_size) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ if (!addr) {
+ addr = ARRAY_INDEX_MAP_PAGE_ADDR(i);
+ data = rtk_usb_phy_read(regAddr, addr);
+
+ phy_parameter->addr = addr;
+ phy_parameter->data = data;
+ dev_dbg(rtk_phy->dev,
+ "Get default addr %x value %x\n",
+ phy_parameter->addr,
+ phy_parameter->data);
+ }
+ }
+
+ phy_parameter_page = phy_data->page1;
+ rtk_usb_phy_set_page(regAddr, 1);
+
+ /* Get PAGE1_0xE0 default value */
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(PAGE1_0xE0);
+ if (i < phy_data->page1_size) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ if (!addr) {
+ addr = ARRAY_INDEX_MAP_PAGE_ADDR(i);
+ data = rtk_usb_phy_read(regAddr, addr);
+
+ phy_parameter->addr = addr;
+ phy_parameter->data = data;
+ dev_dbg(rtk_phy->dev,
+ "Get default page1 addr %x value %x\n",
+ phy_parameter->addr,
+ phy_parameter->data);
+ }
+ }
+
+ /* Get PAGE1_0xE2 default value */
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(PAGE1_0xE2);
+ if (i < phy_data->page1_size) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ if (!addr) {
+ addr = ARRAY_INDEX_MAP_PAGE_ADDR(i);
+ data = rtk_usb_phy_read(regAddr, addr);
+
+ phy_parameter->addr = addr;
+ phy_parameter->data = data;
+ dev_dbg(rtk_phy->dev,
+ "Get default page1 addr %x value %x\n",
+ phy_parameter->addr,
+ phy_parameter->data);
+ }
+ }
+
+ return 0;
+}
+
+static int do_rtk_usb_phy_init(struct rtk_usb_phy *rtk_phy, int index)
+{
+ struct reg_addr *regAddr;
+ struct phy_data *phy_data;
+ struct phy_parameter *phy_parameter_page;
+ int i;
+
+ dev_dbg(rtk_phy->dev, "%s: init phy#%d\n", __func__, index);
+
+ regAddr = &((struct reg_addr *)rtk_phy->reg_addr)[index];
+ phy_data = &((struct phy_data *)rtk_phy->phy_data)[index];
+
+ if (control_phy_power(rtk_phy, phy_data, regAddr)) {
+ phy_data->ldo_enable = true;
+ dev_info(rtk_phy->dev, "%s USB phy use ldo power compensate phy parameter (%d)\n",
+ __func__, phy_data->ldo_driving_compensate);
+ }
+
+ __get_default_phy_parameter_for_updated(rtk_phy, index);
+
+ if (phy_data->use_default_parameter) {
+ dev_info(rtk_phy->dev, "%s phy#%d use default parameter\n",
+ __func__, index);
+ goto do_toggle;
+ }
+
+ /* Set page 0 */
+ phy_parameter_page = phy_data->page0;
+ rtk_usb_phy_set_page(regAddr, 0);
+
+ for (i = 0; i < phy_data->page0_size; i++) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ if (!addr)
+ continue;
+
+ if (addr == PAGE0_0xE4)
+ data = __updated_page0_0xe4_parameter(phy_data, data);
+
+ if (rtk_usb_phy_write(regAddr, addr, data)) {
+ dev_err(rtk_phy->dev,
+ "[%s:%d] Error page0 addr=0x%x value=0x%x\n",
+ __func__, __LINE__, addr, data);
+ return -EINVAL;
+ }
+ dev_dbg(rtk_phy->dev, "[%s:%d] Good page0 addr=0x%x value=0x%x\n",
+ __func__, __LINE__, addr,
+ rtk_usb_phy_read(regAddr, addr));
+ }
+
+ /* Set page 1 */
+ phy_parameter_page = phy_data->page1;
+ rtk_usb_phy_set_page(regAddr, 1);
+
+ for (i = 0; i < phy_data->page1_size; i++) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ if (!addr)
+ continue;
+
+ if (rtk_usb_phy_write(regAddr, addr, data)) {
+ dev_err(rtk_phy->dev,
+ "[%s:%d] Error page1 addr=0x%x value=0x%x\n",
+ __func__, __LINE__,
+ addr, data);
+ return -EINVAL;
+ }
+ dev_dbg(rtk_phy->dev, "[%s:%d] Good page1 addr=0x%x value=0x%x\n",
+ __func__, __LINE__, addr,
+ rtk_usb_phy_read(regAddr, addr));
+ }
+
+ if (phy_data->page2_size == 0)
+ goto do_toggle;
+
+ /* Set page 2 */
+ phy_parameter_page = phy_data->page2;
+ rtk_usb_phy_set_page(regAddr, 2);
+
+ for (i = 0; i < phy_data->page2_size; i++) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = phy_parameter->addr;
+ u8 data = phy_parameter->data;
+
+ if (!addr)
+ continue;
+
+ if (rtk_usb_phy_write(regAddr, addr, data)) {
+ dev_err(rtk_phy->dev,
+ "[%s:%d] Error page2 addr=0x%x value=0x%x\n",
+ __func__, __LINE__, addr, data);
+ return -1;
+ }
+ dev_dbg(rtk_phy->dev, "[%s:%d] Good page2 addr=0x%x value=0x%x\n",
+ __func__, __LINE__, addr,
+ rtk_usb_phy_read(regAddr, addr));
+ }
+
+do_toggle:
+ do_rtk_usb_phy_toggle(rtk_phy, index, false);
+
+ return 0;
+}
+
+static int rtk_usb_phy_init(struct phy *phy)
+{
+ struct rtk_usb_phy *rtk_phy = phy_get_drvdata(phy);
+ unsigned long phy_init_time = jiffies;
+ int i, ret = 0;
+
+ if (!rtk_phy)
+ return -EINVAL;
+
+ dev_dbg(rtk_phy->dev, "Init RTK USB 2.0 PHY\n");
+ for (i = 0; i < rtk_phy->phyN; i++)
+ ret = do_rtk_usb_phy_init(rtk_phy, i);
+
+ dev_info(rtk_phy->dev, "Initialized RTK USB 2.0 PHY (take %dms)\n",
+ jiffies_to_msecs(jiffies - phy_init_time));
+ return ret;
+}
+
+static int rtk_usb_phy_exit(struct phy *phy)
+{
+ struct rtk_usb_phy *rtk_phy = phy_get_drvdata(phy);
+
+ if (!rtk_phy)
+ return -EINVAL;
+
+ dev_info(rtk_phy->dev, "Exit RTK USB 2.0 PHY\n");
+
+ return 0;
+}
+
+static const struct phy_ops ops = {
+ .init = rtk_usb_phy_init,
+ .exit = rtk_usb_phy_exit,
+ .owner = THIS_MODULE,
+};
+
+static void rtk_usb_phy_toggle(struct usb_phy *usb2_phy, bool isConnect, int port)
+{
+ int index = port;
+ struct rtk_usb_phy *rtk_phy = NULL;
+
+ if (usb2_phy != NULL && usb2_phy->dev != NULL)
+ rtk_phy = dev_get_drvdata(usb2_phy->dev);
+
+ if (rtk_phy == NULL) {
+ pr_err("%s %d ERROR! NO this device\n", __func__, __LINE__);
+ return;
+ }
+ if (index > rtk_phy->phyN) {
+ pr_err("%s %d ERROR! port=%d > phyN=%d\n",
+ __func__, __LINE__, index, rtk_phy->phyN);
+ return;
+ }
+
+ do_rtk_usb_phy_toggle(rtk_phy, index, isConnect);
+}
+
+static int rtk_usb_phy_notify_port_status(struct usb_phy *x, int port,
+ u16 portstatus, u16 portchange)
+{
+ bool isConnect = 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)
+ isConnect = true;
+
+ if (portchange & USB_PORT_STAT_C_CONNECTION)
+ rtk_usb_phy_toggle(x, isConnect, 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);
+ if (!phy_debug_root)
+ pr_err("%s Error phy_debug_root is NULL\n", __func__);
+ else
+ pr_debug("%s Create phy_debug_root folder\n", __func__);
+ }
+
+ return phy_debug_root;
+}
+
+static int rtk_usb2_parameter_show(struct seq_file *s, void *unused)
+{
+ struct rtk_usb_phy *rtk_phy = s->private;
+ int i, index;
+
+ for (index = 0; index < rtk_phy->phyN; index++) {
+ struct reg_addr *regAddr =
+ &((struct reg_addr *)rtk_phy->reg_addr)[index];
+ struct phy_data *phy_data =
+ &((struct phy_data *)rtk_phy->phy_data)[index];
+ struct phy_parameter *phy_parameter_page;
+
+ seq_printf(s, "PHY %d:\n", index);
+
+ seq_puts(s, "Page 0:\n");
+ /* Set page 0 */
+ phy_parameter_page = phy_data->page0;
+ rtk_usb_phy_set_page(regAddr, 0);
+
+ for (i = 0; i < phy_data->page0_size; i++) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = ARRAY_INDEX_MAP_PAGE_ADDR(i);
+ u8 data = phy_parameter->data;
+ u8 value = rtk_usb_phy_read(regAddr, addr);
+
+ if (phy_parameter->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_parameter_page = phy_data->page1;
+ rtk_usb_phy_set_page(regAddr, 1);
+
+ for (i = 0; i < phy_data->page1_size; i++) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = ARRAY_INDEX_MAP_PAGE_ADDR(i);
+ u8 data = phy_parameter->data;
+ u8 value = rtk_usb_phy_read(regAddr, addr);
+
+ if (phy_parameter->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_data->page2_size == 0)
+ goto out;
+
+ seq_puts(s, "Page 2:\n");
+ /* Set page 2 */
+ phy_parameter_page = phy_data->page2;
+ rtk_usb_phy_set_page(regAddr, 2);
+
+ for (i = 0; i < phy_data->page2_size; i++) {
+ struct phy_parameter *phy_parameter = phy_parameter_page + i;
+ u8 addr = ARRAY_INDEX_MAP_PAGE_ADDR(i);
+ u8 data = phy_parameter->data;
+ u8 value = rtk_usb_phy_read(regAddr, addr);
+
+ if (phy_parameter->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, "Property:\n");
+ seq_printf(s, "check_efuse: %s\n",
+ phy_data->check_efuse?"Enable":"Disable");
+ seq_printf(s, "check_efuse_version: %d\n",
+ phy_data->check_efuse_version);
+ seq_printf(s, "efuse_usb_dc_cal: %d\n",
+ (int)phy_data->efuse_usb_dc_cal);
+ seq_printf(s, "efuse_usb_dc_cal_rate: %d\n",
+ phy_data->efuse_usb_dc_cal_rate);
+ seq_printf(s, "usb_dc_cal_mask: 0x%x\n",
+ phy_data->usb_dc_cal_mask);
+ seq_printf(s, "efuse_usb_dc_dis: %d\n",
+ (int)phy_data->efuse_usb_dc_dis);
+ seq_printf(s, "efuse_usb_dc_dis_rate: %d\n",
+ phy_data->efuse_usb_dc_dis_rate);
+ seq_printf(s, "usb_dc_dis_mask: 0x%x\n",
+ phy_data->usb_dc_dis_mask);
+ seq_printf(s, "usb_dc_dis_at_page0: %s\n",
+ phy_data->usb_dc_dis_at_page0?"true":"false");
+ seq_printf(s, "do_toggle: %s\n",
+ phy_data->do_toggle?"Enable":"Disable");
+ seq_printf(s, "do_toggle_driving: %s\n",
+ phy_data->do_toggle_driving?"Enable":"Disable");
+ seq_printf(s, "disconnect_driving_updated: 0x%x\n",
+ phy_data->disconnect_driving_updated);
+ seq_printf(s, "use_default_parameter: %s\n",
+ phy_data->use_default_parameter?"Enable":"Disable");
+ seq_printf(s, "is_double_sensitivity_mode: %s\n",
+ phy_data->is_double_sensitivity_mode?"Enable":"Disable");
+ seq_printf(s, "ldo_force_enable: %s\n",
+ phy_data->ldo_force_enable?"Enable":"Disable");
+ seq_printf(s, "ldo_enable: %s\n",
+ phy_data->ldo_enable?"Enable":"Disable");
+ seq_printf(s, "ldo_driving_compensate: %d\n",
+ phy_data->ldo_driving_compensate);
+ seq_printf(s, "driving_compensate: %d\n",
+ phy_data->driving_compensate);
+ }
+
+ return 0;
+}
+
+static int rtk_usb2_parameter_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, rtk_usb2_parameter_show, inode->i_private);
+}
+
+static const struct file_operations rtk_usb2_parameter_fops = {
+ .open = rtk_usb2_parameter_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __get_parameter_at_page(struct seq_file *s,
+ struct rtk_usb_phy *rtk_phy,
+ struct phy_parameter *phy_parameter_page,
+ const char *phy_page, const char *phy_addr)
+{
+ struct phy_parameter *phy_parameter;
+ uint32_t addr;
+ int i, ret;
+
+ ret = kstrtouint(phy_addr, 16, &addr);
+ if (ret < 0) {
+ pr_err("%s::kstrtouint() failed\n", __func__);
+ return -EINVAL;
+ }
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(addr);
+ phy_parameter = (phy_parameter_page + i);
+
+ if (phy_parameter->addr)
+ seq_printf(s, "Now Parameter %s addr 0x%02x = 0x%02x\n",
+ phy_page, phy_parameter->addr, phy_parameter->data);
+ else
+ seq_printf(s, "Now Parameter %s addr 0x%02x is default\n",
+ phy_page, addr);
+
+ dev_dbg(rtk_phy->dev, "%s addr=0x%02x data=0x%02x\n",
+ __func__, phy_parameter->addr, phy_parameter->data);
+
+ return 0;
+}
+
+static int __set_parameter_at_page(
+ struct rtk_usb_phy *rtk_phy,
+ struct reg_addr *regAddr, struct phy_data *phy_data,
+ struct phy_parameter *phy_parameter_page,
+ const char *phy_page, const char *phy_addr, const char *phy_value)
+{
+ struct phy_parameter *phy_parameter;
+ uint32_t addr, value;
+ int i, ret;
+
+ ret = kstrtouint(phy_addr, 16, &addr);
+ if (ret < 0)
+ return -EINVAL;
+
+ ret = kstrtouint(phy_value, 16, &value);
+ if (ret < 0)
+ return -EINVAL;
+
+ i = PAGE_ADDR_MAP_ARRAY_INDEX(addr);
+ phy_parameter = (phy_parameter_page + i);
+
+ if (phy_parameter->addr) {
+ phy_parameter->data = value;
+ } else {
+ phy_parameter->addr = addr;
+ phy_parameter->data = value;
+ }
+
+ dev_dbg(rtk_phy->dev, "%s addr=0x%02x data=0x%02x\n",
+ __func__, phy_parameter->addr, phy_parameter->data);
+
+ if (strcmp("page0", phy_page) == 0 && (addr == PAGE0_0xE4))
+ value = __updated_page0_0xe4_parameter(phy_data, value);
+
+ if (rtk_usb_phy_write(regAddr, addr, value))
+ dev_err(rtk_phy->dev,
+ "[%s:%d] Error: addr=0x%02x value=0x%02x\n",
+ __func__, __LINE__, addr, value);
+
+ return 0;
+}
+
+static int rtk_usb2_set_parameter_show(struct seq_file *s, void *unused)
+{
+ struct rtk_usb_phy *rtk_phy = s->private;
+ const struct file *file = s->file;
+ const char *file_name = file_dentry(file)->d_iname;
+ struct dentry *p_dentry = file_dentry(file)->d_parent;
+ const char *dir_name = p_dentry->d_iname;
+ struct dentry *pp_dentry = p_dentry->d_parent;
+ const char *phy_dir_name = pp_dentry->d_iname;
+ int ret = 0;
+ int index;
+ struct phy_data *phy_data = NULL;
+
+ for (index = 0; index < rtk_phy->phyN; index++) {
+ size_t sz = 30;
+ char name[30] = {0};
+
+ snprintf(name, sz, "phy%d", index);
+ if (strncmp(name, phy_dir_name, strlen(name)) == 0) {
+ phy_data = &((struct phy_data *)rtk_phy->phy_data)[index];
+ break;
+ }
+ }
+ if (!phy_data) {
+ dev_err(rtk_phy->dev,
+ "%s: No phy_data for %s/%s/%s\n",
+ __func__, phy_dir_name, dir_name, file_name);
+ return -EINVAL;
+ }
+
+ if (strcmp("page0", dir_name) == 0)
+ ret = __get_parameter_at_page(s, rtk_phy, phy_data->page0,
+ dir_name, file_name);
+ else if (strcmp("page1", dir_name) == 0)
+ ret = __get_parameter_at_page(s, rtk_phy, phy_data->page1,
+ dir_name, file_name);
+ else if (strcmp("page2", dir_name) == 0)
+ ret = __get_parameter_at_page(s, rtk_phy, phy_data->page2,
+ dir_name, file_name);
+
+ if (ret < 0)
+ return ret;
+
+ seq_puts(s, "Set phy parameter by following command\n");
+ seq_printf(s, "echo \"value\" > %s/%s/%s\n",
+ phy_dir_name, dir_name, file_name);
+
+ return 0;
+}
+
+static int rtk_usb2_set_parameter_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, rtk_usb2_set_parameter_show, inode->i_private);
+}
+
+static ssize_t rtk_usb2_set_parameter_write(struct file *file,
+ const char __user *ubuf, size_t count, loff_t *ppos)
+{
+ const char *file_name = file_dentry(file)->d_iname;
+ struct dentry *p_dentry = file_dentry(file)->d_parent;
+ const char *dir_name = p_dentry->d_iname;
+ struct dentry *pp_dentry = p_dentry->d_parent;
+ const char *phy_dir_name = pp_dentry->d_iname;
+ struct seq_file *s = file->private_data;
+ struct rtk_usb_phy *rtk_phy = s->private;
+ struct reg_addr *regAddr = NULL;
+ struct phy_data *phy_data = NULL;
+ int ret = 0;
+ char buffer[40] = {0};
+ int index;
+
+ if (copy_from_user(&buffer, ubuf,
+ min_t(size_t, sizeof(buffer) - 1, count)))
+ return -EFAULT;
+
+ for (index = 0; index < rtk_phy->phyN; index++) {
+ size_t sz = 30;
+ char name[30] = {0};
+
+ snprintf(name, sz, "phy%d", index);
+ if (strncmp(name, phy_dir_name, strlen(name)) == 0) {
+ regAddr = &((struct reg_addr *)rtk_phy->reg_addr)[index];
+ phy_data = &((struct phy_data *)rtk_phy->phy_data)[index];
+ break;
+ }
+ }
+ if (!regAddr) {
+ dev_err(rtk_phy->dev,
+ "%s: No regAddr for %s/%s/%s\n",
+ __func__, phy_dir_name, dir_name, file_name);
+ return -EINVAL;
+ }
+ if (!phy_data) {
+ dev_err(rtk_phy->dev,
+ "%s: No phy_data for %s/%s/%s\n",
+ __func__, phy_dir_name, dir_name, file_name);
+ return -EINVAL;
+ }
+
+ if (strcmp("page0", dir_name) == 0) {
+ rtk_usb_phy_set_page(regAddr, 0);
+ ret = __set_parameter_at_page(rtk_phy, regAddr, phy_data,
+ phy_data->page0, dir_name, file_name, buffer);
+ } else if (strcmp("page1", dir_name) == 0) {
+ rtk_usb_phy_set_page(regAddr, 1);
+ ret = __set_parameter_at_page(rtk_phy, regAddr, phy_data,
+ phy_data->page1, dir_name, file_name, buffer);
+ } else if (strcmp("page2", dir_name) == 0) {
+ rtk_usb_phy_set_page(regAddr, 2);
+ ret = __set_parameter_at_page(rtk_phy, regAddr, phy_data,
+ phy_data->page2, dir_name, file_name, buffer);
+ }
+ if (ret < 0)
+ return ret;
+
+ return count;
+}
+
+static const struct file_operations rtk_usb2_set_parameter_fops = {
+ .open = rtk_usb2_set_parameter_open,
+ .write = rtk_usb2_set_parameter_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int rtk_usb2_toggle_show(struct seq_file *s, void *unused)
+{
+ struct rtk_usb_phy *rtk_phy = s->private;
+ struct phy_data *phy_data;
+ int i;
+
+ for (i = 0; i < rtk_phy->phyN; i++) {
+ phy_data = &((struct phy_data *)rtk_phy->phy_data)[i];
+ seq_printf(s, "Now phy#%d do_toggle is %s.\n",
+ i, phy_data->do_toggle?"Enable":"Disable");
+ }
+ seq_puts(s, "ehco 1 to enable toggle phy parameter.\n");
+
+ return 0;
+}
+
+static int rtk_usb2_toggle_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, rtk_usb2_toggle_show, inode->i_private);
+}
+
+static ssize_t rtk_usb2_toggle_write(struct file *file,
+ const char __user *ubuf, size_t count, loff_t *ppos)
+{
+ struct seq_file *s = file->private_data;
+ struct rtk_usb_phy *rtk_phy = s->private;
+ char buf[32];
+ struct phy_data *phy_data;
+ bool enable = false;
+ int i;
+
+ if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count)))
+ return -EFAULT;
+
+ if (!strncmp(buf, "1", 1))
+ enable = true;
+
+ for (i = 0; i < rtk_phy->phyN; i++) {
+ phy_data = &((struct phy_data *)rtk_phy->phy_data)[i];
+ phy_data->do_toggle = enable;
+ dev_info(rtk_phy->dev, "Set phy#%d do_toggle is %s.\n",
+ i, phy_data->do_toggle?"Enable":"Disable");
+ }
+
+ return count;
+}
+
+static const struct file_operations rtk_usb2_toggle_fops = {
+ .open = rtk_usb2_toggle_open,
+ .write = rtk_usb2_toggle_write,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int create_debug_set_parameter_files(struct rtk_usb_phy *rtk_phy,
+ struct dentry *phy_dir, const char *page, size_t addr_size)
+{
+ struct dentry *page_dir;
+ int i;
+
+ page_dir = debugfs_create_dir(page, phy_dir);
+ if (!page_dir) {
+ dev_err(rtk_phy->dev,
+ "%s Error create folder %s fail\n",
+ __func__, page);
+ return -EINVAL;
+ }
+
+ for (i = 0; i < addr_size; i++) {
+ size_t sz = 30;
+ char name[30] = {0};
+
+ snprintf(name, sz, "%x", ARRAY_INDEX_MAP_PAGE_ADDR(i));
+
+ if (!debugfs_create_file(name, 0644,
+ page_dir, rtk_phy,
+ &rtk_usb2_set_parameter_fops))
+ dev_err(rtk_phy->dev,
+ "%s Error create file %s/%s fail",
+ page, name, __func__);
+ }
+
+ return 0;
+}
+
+static inline void create_debug_files(struct rtk_usb_phy *rtk_phy)
+{
+ struct dentry *phy_debug_root = NULL;
+ struct dentry *set_parameter_dir = NULL;
+
+ phy_debug_root = create_phy_debug_root();
+
+ if (!phy_debug_root) {
+ dev_err(rtk_phy->dev, "%s Error phy_debug_root is NULL",
+ __func__);
+ return;
+ }
+
+ rtk_phy->debug_dir = debugfs_create_dir(dev_name(rtk_phy->dev),
+ phy_debug_root);
+ if (!rtk_phy->debug_dir) {
+ dev_err(rtk_phy->dev, "%s Error debug_dir is NULL", __func__);
+ return;
+ }
+
+ if (!debugfs_create_file("parameter", 0444, rtk_phy->debug_dir, rtk_phy,
+ &rtk_usb2_parameter_fops))
+ goto file_error;
+
+ set_parameter_dir = debugfs_create_dir("set_parameter",
+ rtk_phy->debug_dir);
+ if (set_parameter_dir) {
+ int index, ret;
+
+ for (index = 0; index < rtk_phy->phyN; index++) {
+ struct dentry *phy_dir;
+ struct phy_data *phy_data;
+ size_t sz = 30;
+ char name[30] = {0};
+
+ snprintf(name, sz, "phy%d", index);
+
+ phy_data = &((struct phy_data *)rtk_phy->phy_data)[index];
+
+ phy_dir = debugfs_create_dir(name, set_parameter_dir);
+ if (!phy_dir) {
+ dev_err(rtk_phy->dev,
+ "%s Error create folder %s fail\n",
+ name, __func__);
+ goto file_error;
+ }
+
+ ret = create_debug_set_parameter_files(rtk_phy, phy_dir,
+ "page0", phy_data->page0_size);
+ if (ret < 0) {
+ dev_err(rtk_phy->dev,
+ "%s Error create files for page0 fail\n",
+ __func__);
+ goto file_error;
+ }
+
+ ret = create_debug_set_parameter_files(rtk_phy, phy_dir,
+ "page1", phy_data->page1_size);
+ if (ret < 0) {
+ dev_err(rtk_phy->dev,
+ "%s Error create files for page1 fail\n",
+ __func__);
+ goto file_error;
+ }
+
+ ret = create_debug_set_parameter_files(rtk_phy, phy_dir,
+ "page2", phy_data->page2_size);
+ if (ret < 0) {
+ dev_err(rtk_phy->dev,
+ "%s Error create files for page2 fail\n",
+ __func__);
+ goto file_error;
+ }
+ }
+ }
+
+ if (!debugfs_create_file("toggle", 0644,
+ rtk_phy->debug_dir, rtk_phy, &rtk_usb2_toggle_fops))
+ goto file_error;
+
+ return;
+
+file_error:
+ debugfs_remove_recursive(rtk_phy->debug_dir);
+}
+
+static inline void remove_debug_files(struct rtk_usb_phy *rtk_phy)
+{
+ debugfs_remove_recursive(rtk_phy->debug_dir);
+}
+#else
+static inline void create_debug_files(struct rtk_usb_phy *rtk_phy) { }
+static inline void remove_debug_files(struct rtk_usb_phy *rtk_phy) { }
+#endif /* CONFIG_DEBUG_FS */
+
+static int __get_phy_parameter_by_efuse(struct rtk_usb_phy *rtk_phy,
+ struct phy_data *phy_data, int index)
+{
+ u8 value = 0;
+ struct nvmem_cell *cell;
+ struct soc_device_attribute rtk_soc_groot[] = {
+ { .family = "Realtek Groot",},
+ { /* empty */ }
+ };
+ struct soc_device_attribute rtk_soc_hank[] = {
+ { .family = "Realtek Hank",},
+ { /* empty */ }
+ };
+ struct soc_device_attribute rtk_soc_efuse_v1[] = {
+ { .family = "Realtek Phoenix",},
+ { .family = "Realtek Kylin",},
+ { .family = "Realtek Hercules",},
+ { .family = "Realtek Thor",},
+ { .family = "Realtek Hank",},
+ { .family = "Realtek Groot",},
+ { .family = "Realtek Stark",},
+ { .family = "Realtek Parker",},
+ { /* empty */ }
+ };
+ struct soc_device_attribute rtk_soc_dis_level_at_page0[] = {
+ { .family = "Realtek Phoenix",},
+ { .family = "Realtek Kylin",},
+ { .family = "Realtek Hercules",},
+ { .family = "Realtek Thor",},
+ { .family = "Realtek Hank",},
+ { .family = "Realtek Groot",},
+ { /* empty */ }
+ };
+
+ if (soc_device_match(rtk_soc_efuse_v1)) {
+ dev_dbg(rtk_phy->dev, "Use efuse v1 to updated phy parameter\n");
+ phy_data->check_efuse_version = CHECK_EFUSE_V1;
+ } else {
+ dev_dbg(rtk_phy->dev, "Use efuse v2 to updated phy parameter\n");
+ phy_data->check_efuse_version = CHECK_EFUSE_V2;
+ }
+
+ if (soc_device_match(rtk_soc_dis_level_at_page0)) {
+ dev_dbg(rtk_phy->dev, "Use usb_dc_dis_at_page0\\n");
+ phy_data->usb_dc_dis_at_page0 = true;
+
+ phy_data->usb_dc_cal_mask = 0xf;
+ phy_data->usb_dc_dis_mask = 0xf;
+
+ phy_data->disconnect_driving_updated = 0xf;
+ } else {
+ dev_dbg(rtk_phy->dev, "No use usb_dc_dis_at_page0\n");
+ phy_data->usb_dc_dis_at_page0 = false;
+
+ phy_data->usb_dc_cal_mask = 0x1f;
+ phy_data->usb_dc_dis_mask = 0xf;
+
+ phy_data->disconnect_driving_updated = 0x8;
+ }
+
+ phy_data->efuse_usb_dc_cal_rate = EFUS_USB_DC_CAL_RATE;
+ phy_data->efuse_usb_dc_dis_rate = EFUS_USB_DC_DIS_RATE;
+
+ if (soc_device_match(rtk_soc_hank))
+ phy_data->efuse_usb_dc_cal_rate = 1;
+
+ if (!phy_data->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_warn(rtk_phy->dev, "%s failed to get usb-dc-cal: %ld\n",
+ __func__, PTR_ERR(cell));
+ } else {
+ unsigned char *buf;
+ size_t buf_size;
+
+ buf = nvmem_cell_read(cell, &buf_size);
+
+ value = buf[0] & phy_data->usb_dc_cal_mask;
+
+ dev_dbg(rtk_phy->dev,
+ "buf=0x%x buf_size=%d value=0x%x\n",
+ buf[0], (int)buf_size, value);
+
+ kfree(buf);
+ nvmem_cell_put(cell);
+ }
+
+ if (phy_data->check_efuse_version == CHECK_EFUSE_V1) {
+ int rate = phy_data->efuse_usb_dc_cal_rate;
+
+ if (value <= EFUS_USB_DC_CAL_MAX)
+ phy_data->efuse_usb_dc_cal = (int8_t)(value * rate);
+ else
+ phy_data->efuse_usb_dc_cal = -(int8_t)(
+ (EFUS_USB_DC_CAL_MAX & value) * rate);
+
+ if (soc_device_match(rtk_soc_groot)) {
+ dev_info(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_data->efuse_usb_dc_cal = (int8_t)(value);
+
+ /* We set max dc cal compensate is 0x8 if otp is 0x7 */
+ if (value == 0x7)
+ phy_data->efuse_usb_dc_cal = (int8_t)(value + 1);
+ }
+ } else { /* for CHECK_EFUSE_V2 */
+ phy_data->efuse_usb_dc_cal = value & phy_data->usb_dc_cal_mask;
+ }
+
+ dev_dbg(rtk_phy->dev, "Get Efuse usb_dc_cal=%d for index=%d value=%x\n",
+ phy_data->efuse_usb_dc_cal, index, value);
+
+ /* Read efuse for usb dc disconnect level */
+ value = 0;
+ cell = nvmem_cell_get(rtk_phy->dev, "usb-dc-dis");
+ if (IS_ERR(cell)) {
+ dev_warn(rtk_phy->dev, "%s failed to get usb-dc-dis: %ld\n",
+ __func__, PTR_ERR(cell));
+ } else {
+ unsigned char *buf;
+ size_t buf_size;
+
+ buf = nvmem_cell_read(cell, &buf_size);
+
+ value = buf[0] & phy_data->usb_dc_dis_mask;
+
+ dev_dbg(rtk_phy->dev,
+ "buf=0x%x buf_size=%d value=0x%x\n",
+ buf[0], (int)buf_size, value);
+
+ kfree(buf);
+ nvmem_cell_put(cell);
+ }
+
+ if (phy_data->check_efuse_version == CHECK_EFUSE_V1) {
+ int rate = phy_data->efuse_usb_dc_dis_rate;
+
+ if (value <= EFUS_USB_DC_DIS_MAX)
+ phy_data->efuse_usb_dc_dis = (int8_t)(value * rate);
+ else
+ phy_data->efuse_usb_dc_dis = -(int8_t)(
+ (EFUS_USB_DC_DIS_MAX & value) * rate);
+ } else { /* for CHECK_EFUSE_V2 */
+ phy_data->efuse_usb_dc_dis = value & phy_data->usb_dc_dis_mask;
+ }
+
+ dev_dbg(rtk_phy->dev, "Get Efuse usb_dc_dis=%d for index=%d value=%x\n",
+ phy_data->efuse_usb_dc_dis, index, value);
+
+out:
+ return 0;
+}
+
+static int __get_phy_parameter(struct device *dev, struct phy_data *phy_data,
+ struct device_node *sub_node)
+{
+ u32 page_size = 0;
+ u32 num_cells = 2; /*< addr value > */
+ u32 data_size;
+ int i, ret = 0;
+
+ /* Page 0 */
+ page_size = MAX_USB_PHY_PAGE0_DATA_SIZE;
+ phy_data->page0_size = page_size;
+ phy_data->page0 = devm_kzalloc(dev,
+ sizeof(struct phy_parameter) * page_size, GFP_KERNEL);
+ if (!phy_data->page0) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (!of_get_property(sub_node, "realtek,page0-param", &data_size)) {
+ dev_dbg(dev, "%s No page0 parameter (data_size=%d)\n",
+ __func__, data_size);
+ data_size = 0;
+ }
+
+ if (!data_size)
+ goto parse_page1;
+
+ data_size = data_size / (sizeof(u32) * num_cells);
+
+ for (i = 0; i < data_size; i++) {
+ struct phy_parameter *phy_parameter;
+ u32 addr, data;
+ int index, offset;
+
+ offset = i * num_cells;
+
+ ret = of_property_read_u32_index(sub_node, "realtek,page0-param",
+ offset, &addr);
+ if (ret) {
+ dev_err(dev, "ERROR: To get page0 i=%d addr=0x%x\n",
+ i, addr);
+ break;
+ }
+
+ ret = of_property_read_u32_index(sub_node, "realtek,page0-param",
+ offset + 1, &data);
+ if (ret) {
+ dev_err(dev, "ERROR: To get page0 i=%d addr=0x%x\n",
+ i, data);
+ break;
+ }
+
+ index = PAGE_ADDR_MAP_ARRAY_INDEX(addr);
+ phy_parameter = (phy_data->page0 + index);
+ phy_parameter->addr = (char)addr;
+ phy_parameter->data = (char)data;
+
+ dev_dbg(dev, "page0 index=%d addr=0x%x data=0x%x\n",
+ index, phy_parameter->addr, phy_parameter->data);
+ }
+
+parse_page1:
+ /* Page 1 */
+ page_size = MAX_USB_PHY_PAGE1_DATA_SIZE;
+ phy_data->page1_size = page_size;
+ phy_data->page1 = devm_kzalloc(dev,
+ sizeof(struct phy_parameter) * page_size, GFP_KERNEL);
+ if (!phy_data->page1) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (!of_get_property(sub_node, "realtek,page1-param", &data_size)) {
+ dev_dbg(dev, "%s No page1 parameter (data_size=%d)\n",
+ __func__, data_size);
+ data_size = 0;
+ }
+
+ if (!data_size)
+ goto parse_page2;
+
+ data_size = data_size / (sizeof(u32) * num_cells);
+
+ for (i = 0; i < data_size; i++) {
+ struct phy_parameter *phy_parameter;
+ u32 addr, data;
+ int index, offset;
+
+ offset = i * num_cells;
+
+ ret = of_property_read_u32_index(sub_node, "realtek,page1-param",
+ offset, &addr);
+ if (ret) {
+ dev_err(dev, "ERROR: To get page1 i=%d addr=0x%x\n",
+ i, addr);
+ break;
+ }
+
+ ret = of_property_read_u32_index(sub_node, "realtek,page1-param",
+ offset + 1, &data);
+ if (ret) {
+ dev_err(dev, "ERROR: To get page1 i=%d addr=0x%x\n",
+ i, data);
+ break;
+ }
+
+ index = PAGE_ADDR_MAP_ARRAY_INDEX(addr);
+ phy_parameter = phy_data->page1 + index;
+ phy_parameter->addr = (char)addr;
+ phy_parameter->data = (char)data;
+
+ dev_dbg(dev, "page1 index=%d addr=0x%x data=0x%x\n",
+ index, phy_parameter->addr, phy_parameter->data);
+ }
+
+parse_page2:
+ /* Page 2 */
+ if (of_property_read_bool(sub_node, "realtek,support-page2-param"))
+ page_size = MAX_USB_PHY_PAGE2_DATA_SIZE;
+ else
+ page_size = 0;
+
+ if (!page_size)
+ goto out;
+
+ phy_data->page2_size = page_size;
+ phy_data->page2 = devm_kzalloc(dev,
+ sizeof(struct phy_parameter) * page_size, GFP_KERNEL);
+ if (!phy_data->page2) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ if (!of_get_property(sub_node, "realtek,page2-param", &data_size)) {
+ dev_dbg(dev, "%s No page2 parameter (data_size=%d)\n",
+ __func__, data_size);
+ data_size = 0;
+ }
+ data_size = data_size / (sizeof(u32) * num_cells);
+
+ for (i = 0; i < data_size; i++) {
+ struct phy_parameter *phy_parameter;
+ u32 addr, data;
+ int index, offset;
+
+ offset = i * num_cells;
+
+ ret = of_property_read_u32_index(sub_node, "realtek,page2-param",
+ offset, &addr);
+ if (ret) {
+ dev_err(dev, "ERROR: To get page2 i=%d addr=0x%x\n",
+ i, addr);
+ break;
+ }
+
+ ret = of_property_read_u32_index(sub_node, "realtek,page2-param",
+ offset + 1, &data);
+ if (ret) {
+ dev_err(dev, "ERROR: To get page2 i=%d addr=0x%x\n",
+ i, data);
+ break;
+ }
+
+ index = PAGE_ADDR_MAP_ARRAY_INDEX(addr);
+ phy_parameter = phy_data->page2 + index;
+ phy_parameter->addr = (char)addr;
+ phy_parameter->data = (char)data;
+
+ dev_dbg(dev, "page2 index=%d addr=0x%x data=0x%x\n",
+ index, phy_parameter->addr, phy_parameter->data);
+ }
+
+out:
+ return ret;
+}
+
+static int get_phy_parameter(struct rtk_usb_phy *rtk_phy,
+ struct device_node *sub_node)
+{
+ struct device *dev = rtk_phy->dev;
+ struct reg_addr *addr;
+ struct phy_data *phy_data;
+ int ret = 0;
+ int index;
+
+ if (of_property_read_u32(sub_node, "reg", &index)) {
+ dev_err(dev, "sub_node without reg\n");
+ return -EINVAL;
+ }
+
+ dev_dbg(dev, "sub_node index=%d\n", index);
+
+ addr = &((struct reg_addr *)rtk_phy->reg_addr)[index];
+ phy_data = &((struct phy_data *)rtk_phy->phy_data)[index];
+
+ addr->reg_wrap_vstatus = of_iomap(dev->of_node, 0);
+ addr->reg_gusb2phyacc0 = of_iomap(dev->of_node, 1) + index;
+ addr->vstatus_index = index;
+ dev_dbg(dev, "%s %d #%d reg_wrap_vstatus=%p\n", __func__, __LINE__,
+ index, addr->reg_wrap_vstatus);
+ dev_dbg(dev, "%s %d #%d reg_gusb2phyacc0=%p\n", __func__, __LINE__,
+ index, addr->reg_gusb2phyacc0);
+
+ if (!sub_node)
+ goto err;
+
+ ret = __get_phy_parameter(dev, phy_data, sub_node);
+ if (ret)
+ goto err;
+
+ if (of_property_read_bool(sub_node, "realtek,do-toggle"))
+ phy_data->do_toggle = true;
+ else
+ phy_data->do_toggle = false;
+
+ if (of_property_read_bool(sub_node, "realtek,do-toggle-driving"))
+ phy_data->do_toggle_driving = true;
+ else
+ phy_data->do_toggle_driving = false;
+
+ if (of_property_read_bool(sub_node, "realtek,check-efuse"))
+ phy_data->check_efuse = true;
+ else
+ phy_data->check_efuse = false;
+
+ if (of_property_read_bool(sub_node, "realtek,use-default-parameter"))
+ phy_data->use_default_parameter = true;
+ else
+ phy_data->use_default_parameter = false;
+
+ if (of_property_read_bool(sub_node,
+ "realtek,is-double-sensitivity-mode"))
+ phy_data->is_double_sensitivity_mode = true;
+ else
+ phy_data->is_double_sensitivity_mode = false;
+
+ if (of_property_read_bool(sub_node,
+ "realtek,ldo-force-enable"))
+ phy_data->ldo_force_enable = true;
+ else
+ phy_data->ldo_force_enable = false;
+
+ if (of_property_read_s32(sub_node,
+ "realtek,ldo-driving-compensate", &phy_data->ldo_driving_compensate))
+ phy_data->ldo_driving_compensate = 0;
+
+ if (of_property_read_s32(sub_node,
+ "realtek,driving-compensate", &phy_data->driving_compensate))
+ phy_data->driving_compensate = 0;
+
+ __get_phy_parameter_by_efuse(rtk_phy, phy_data, index);
+
+err:
+ return ret;
+}
+
+static int rtk_usb2phy_probe(struct platform_device *pdev)
+{
+ struct rtk_usb_phy *rtk_phy;
+ struct device *dev = &pdev->dev;
+ struct device_node *node;
+ struct device_node *sub_node;
+ struct phy *generic_phy;
+ struct phy_provider *phy_provider;
+ int phyN, ret = 0;
+
+ 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_usb_phy_notify_port_status;
+
+ if (!dev->of_node) {
+ dev_err(dev, "%s %d No device node\n", __func__, __LINE__);
+ goto err;
+ }
+
+ node = dev->of_node;
+
+ rtk_phy->usb_ctrl_regs = syscon_regmap_lookup_by_phandle(node, "realtek,usb-ctrl");
+ if (IS_ERR(rtk_phy->usb_ctrl_regs)) {
+ dev_info(dev, "%s: DTS no support usb_ctrl regs syscon\n", __func__);
+ rtk_phy->usb_ctrl_regs = NULL;
+ }
+
+ phyN = of_get_child_count(node);
+ rtk_phy->phyN = phyN;
+ dev_dbg(dev, "%s phyN=%d\n", __func__, rtk_phy->phyN);
+
+ rtk_phy->reg_addr = devm_kzalloc(dev,
+ sizeof(struct reg_addr) * phyN, GFP_KERNEL);
+ if (!rtk_phy->reg_addr)
+ return -ENOMEM;
+
+ rtk_phy->phy_data = devm_kzalloc(dev,
+ sizeof(struct phy_data) * phyN, GFP_KERNEL);
+ if (!rtk_phy->phy_data)
+ return -ENOMEM;
+
+ for (sub_node = of_get_next_child(node, NULL); sub_node != NULL;
+ sub_node = of_get_next_child(node, sub_node)) {
+ ret = get_phy_parameter(rtk_phy, sub_node);
+ if (ret) {
+ dev_err(dev, "%s: get_phy_parameter fail ret=%d\n",
+ __func__, 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:
+ dev_dbg(dev, "Probe RTK USB 2.0 PHY (ret=%d)\n", ret);
+
+ return ret;
+}
+
+static void rtk_usb2phy_remove(struct platform_device *pdev)
+{
+ struct rtk_usb_phy *rtk_phy = platform_get_drvdata(pdev);
+
+ remove_debug_files(rtk_phy);
+
+ usb_remove_phy(&rtk_phy->phy);
+}
+
+static const struct of_device_id usbphy_rtk_dt_match[] = {
+ { .compatible = "realtek,usb2phy", },
+ {},
+};
+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",
+ .owner = THIS_MODULE,
+ .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@...ltek.com>");
+MODULE_DESCRIPTION("Realtek usb 2.0 phy driver");
--
2.34.1
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