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linux-next/drivers/extcon/extcon-rtk-type-c.c

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// SPDX-License-Identifier: GPL-2.0
/*
* * extcon-rtk-type-c.c - Realtek Extcon Type C driver
*
* Copyright (C) 2023 Realtek Semiconductor Corporation
*
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/platform_device.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/syscalls.h>
#include <linux/suspend.h>
#include <linux/debugfs.h>
#include <linux/extcon.h>
#include <linux/extcon-provider.h>
#include <linux/sys_soc.h>
#include <linux/nvmem-consumer.h>
#include <linux/gpio/consumer.h>
#include <linux/usb/otg.h>
#include <linux/usb/typec.h>
struct cc_param {
u32 rp_4p7k_code;
u32 rp_36k_code;
u32 rp_12k_code;
u32 rd_code;
u32 ra_code;
u32 vref_2p6v;
u32 vref_1p23v;
u32 vref_0p8v;
u32 vref_0p66v;
u32 vref_0p4v;
u32 vref_0p2v;
u32 vref_1_1p6v;
u32 vref_0_1p6v;
};
struct type_c_cfg {
int parameter_ver; /* Parameter version */
int cc_dfp_mode;
struct cc_param cc1_param;
struct cc_param cc2_param;
u32 debounce_val;
bool use_defalut_parameter;
};
struct type_c_data {
void __iomem *reg_base;
struct device *dev;
struct extcon_dev *edev;
u32 irq;
/* rd control GPIO only for rtd1295 */
struct gpio_desc *rd_ctrl_gpio_desc;
/* Parameters */
struct type_c_cfg *type_c_cfg;
u32 dfp_mode_rp_en;
u32 ufp_mode_rd_en;
u32 cc1_code;
u32 cc2_code;
u32 cc1_vref;
u32 cc2_vref;
u32 debounce; /* 1b,1us 7f,4.7us */
/* type_c state */
int connect_change;
#define CONNECT_CHANGE 1
#define CONNECT_NO_CHANGE 0
int cc_mode; /* cc is host or device */
#define IN_HOST_MODE 0x10
#define IN_DEVICE_MODE 0x20
int is_attach;
#define IN_ATTACH 1
#define TO_ATTACH 1
#define IN_DETACH 0
#define TO_DETACH 0
int at_cc1;
#define AT_CC1 1
#define AT_CC2 0
u32 int_status;
u32 cc_status;
/* protect the data member */
spinlock_t lock;
struct delayed_work delayed_work;
bool rd_en_at_first;
struct dentry *debug_dir;
struct typec_port *port;
};
/* Type C register offset */
#define USB_TYPEC_CTRL_CC1_0 0x0
#define USB_TYPEC_CTRL_CC1_1 0x4
#define USB_TYPEC_CTRL_CC2_0 0x8
#define USB_TYPEC_CTRL_CC2_1 0xC
#define USB_TYPEC_STS 0x10
#define USB_TYPEC_CTRL 0x14
#define USB_DBUS_PWR_CTRL 0x18
#define ENABLE_CC1 0x1
#define ENABLE_CC2 0x2
#define DISABLE_CC 0x0
/* Bit mapping USB_TYPEC_CTRL_CC1_0 and USB_TYPEC_CTRL_CC2_0 */
#define PLR_EN BIT(29)
#define CC_SWITCH_MASK (BIT(29) | BIT(28) | BIT(27))
#define CC_CODE_MASK (0xfffff << 7)
#define rp4pk_code(val) ((0x1f & (val)) << 22)
#define code_rp4pk(val) (((val) >> 22) & 0x1f)
#define rp36k_code(val) ((0x1f & (val)) << 17)
#define code_rp36k(val) (((val) >> 17) & 0x1f)
#define rp12k_code(val) ((0x1f & (val)) << 12)
#define code_rp12k(val) (((val) >> 12) & 0x1f)
#define rd_code(val) ((0x1f & (val)) << 7)
#define code_rd(val) (((val) >> 7) & 0x1f)
#define dfp_mode(val) ((0x3 & (val)) << 5)
#define EN_RP4P7K BIT(4)
#define EN_RP36K BIT(3)
#define EN_RP12K BIT(2)
#define EN_RD BIT(1)
#define EN_CC_DET BIT(0)
#define CC_MODE_UFP 0x0
#define CC_MODE_DFP_USB 0x1
#define CC_MODE_DFP_1_5 0x2
#define CC_MODE_DFP_3_0 0x3
/*
* PARAMETER_V0:
* Realtek Kylin rtd1295
* Realtek Hercules rtd1395
* Realtek Thor rtd1619
* Realtek Hank rtd1319
* Realtek Groot rtd1312c
* PARAMETER_V1:
* Realtek Stark rtd1619b
* Realtek Parker rtd1319d
* Realtek Danvers rtd1315e
*/
enum parameter_version {
PARAMETER_V0 = 0,
PARAMETER_V1 = 1,
};
/* Bit mapping USB_TYPEC_CTRL_CC1_1 and USB_TYPEC_CTRL_CC2_1 */
#define V0_vref_2p6v(val) ((0xf & (val)) << 26) /* Bit 29 for groot */
#define V0_vref_1p23v(val) ((0xf & (val)) << 22)
#define V0_vref_0p8v(val) ((0xf & (val)) << 18)
#define V0_vref_0p66v(val) ((0xf & (val)) << 14)
#define V0_vref_0p4v(val) ((0x7 & (val)) << 11)
#define V0_vref_0p2v(val) ((0x7 & (val)) << 8)
#define V0_vref_1_1p6v(val) ((0xf & (val)) << 4)
#define V0_vref_0_1p6v(val) ((0xf & (val)) << 0)
#define V0_decode_2p6v(val) (((val) >> 26) & 0xf) /* Bit 29 for groot */
#define V0_decode_1p23v(val) (((val) >> 22) & 0xf)
#define V0_decode_0p8v(val) (((val) >> 18) & 0xf)
#define V0_decode_0p66v(val) (((val) >> 14) & 0xf)
#define V0_decode_0p4v(val) (((val) >> 11) & 0x7)
#define V0_decode_0p2v(val) (((val) >> 8) & 0x7)
#define V0_decode_1_1p6v(val) (((val) >> 4) & 0xf)
#define V0_decode_0_1p6v(val) (((val) >> 0) & 0xf)
/* new Bit mapping USB_TYPEC_CTRL_CC1_1 and USB_TYPEC_CTRL_CC2_1 */
#define V1_vref_2p6v(val) ((0xf & (val)) << 28)
#define V1_vref_1p23v(val) ((0xf & (val)) << 24)
#define V1_vref_0p8v(val) ((0xf & (val)) << 20)
#define V1_vref_0p66v(val) ((0xf & (val)) << 16)
#define V1_vref_0p4v(val) ((0xf & (val)) << 12)
#define V1_vref_0p2v(val) ((0xf & (val)) << 8)
#define V1_vref_1_1p6v(val) ((0xf & (val)) << 4)
#define V1_vref_0_1p6v(val) ((0xf & (val)) << 0)
#define V1_decode_2p6v(val) (((val) >> 28) & 0xf)
#define V1_decode_1p23v(val) (((val) >> 24) & 0xf)
#define V1_decode_0p8v(val) (((val) >> 20) & 0xf)
#define V1_decode_0p66v(val) (((val) >> 16) & 0xf)
#define V1_decode_0p4v(val) (((val) >> 12) & 0xf)
#define V1_decode_0p2v(val) (((val) >> 8) & 0xf)
#define V1_decode_1_1p6v(val) (((val) >> 4) & 0xf)
#define V1_decode_0_1p6v(val) (((val) >> 0) & 0xf)
/* Bit mapping USB_TYPEC_STS */
#define DET_STS 0x7
#define CC1_DET_STS (DET_STS)
#define CC2_DET_STS (DET_STS << 3)
#define DET_STS_RA 0x1
#define DET_STS_RD 0x3
#define DET_STS_RP 0x1
#define CC1_DET_STS_RA (DET_STS_RA)
#define CC1_DET_STS_RD (DET_STS_RD)
#define CC1_DET_STS_RP (DET_STS_RP)
#define CC2_DET_STS_RA (DET_STS_RA << 3)
#define CC2_DET_STS_RD (DET_STS_RD << 3)
#define CC2_DET_STS_RP (DET_STS_RP << 3)
/* Bit mapping USB_TYPEC_CTRL */
#define CC2_INT_EN BIT(11)
#define CC1_INT_EN BIT(10)
#define CC2_INT_STS BIT(9)
#define CC1_INT_STS BIT(8)
#define DEBOUNCE_TIME_MASK 0xff
#define DEBOUNCE_EN BIT(0)
#define ENABLE_TYPE_C_DETECT (CC1_INT_EN | CC2_INT_EN)
#define ALL_CC_INT_STS (CC1_INT_STS | CC2_INT_STS)
/* Parameter */
#define DETECT_TIME 50 /* ms */
static const unsigned int usb_type_c_cable[] = {
EXTCON_USB,
EXTCON_USB_HOST,
EXTCON_NONE,
};
enum usb_data_roles {
DR_NONE,
DR_HOST,
DR_DEVICE,
};
static const struct soc_device_attribute rtk_soc_kylin[] = {
{ .family = "Realtek Kylin", },
{ /* empty */ }
};
static int rtd129x_switch_type_c_plug_config(struct type_c_data *type_c,
int dr_mode, int cc)
{
void __iomem *reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_0;
int val_cc;
#define TYPE_C_EN_SWITCH BIT(29)
#define TYPE_C_TXRX_SEL (BIT(28) | BIT(27))
#define TYPE_C_SWITCH_MASK (TYPE_C_EN_SWITCH | TYPE_C_TXRX_SEL)
#define TYPE_C_ENABLE_CC1 TYPE_C_EN_SWITCH
#define TYPE_C_ENABLE_CC2 (TYPE_C_EN_SWITCH | TYPE_C_TXRX_SEL)
#define TYPE_C_DISABLE_CC ~TYPE_C_SWITCH_MASK
val_cc = readl(reg);
val_cc &= ~TYPE_C_SWITCH_MASK;
if (cc == DISABLE_CC) {
val_cc &= TYPE_C_DISABLE_CC;
} else if (cc == ENABLE_CC1) {
val_cc |= TYPE_C_ENABLE_CC1;
} else if (cc == ENABLE_CC2) {
val_cc |= TYPE_C_ENABLE_CC2;
} else {
dev_err(type_c->dev, "%s: Error cc setting cc=0x%x\n", __func__, cc);
return -EINVAL;
}
writel(val_cc, reg);
/* waiting cc stable for enable/disable */
mdelay(1);
dev_dbg(type_c->dev, "%s: cc=0x%x val_cc=0x%x usb_typec_ctrl_cc1_0=0x%x\n",
__func__, cc, val_cc, readl(reg));
return 0;
}
static inline void switch_type_c_plug_config(struct type_c_data *type_c,
int dr_mode, int cc)
{
int ret = 0;
if (soc_device_match(rtk_soc_kylin))
ret = rtd129x_switch_type_c_plug_config(type_c, dr_mode, cc);
if (ret < 0)
dev_err(type_c->dev, "%s: Error set type c plug config\n",
__func__);
}
static void switch_type_c_dr_mode(struct type_c_data *type_c, int dr_mode, int cc)
{
bool is_host = false;
bool is_device = false;
bool polarity = false;
bool vbus = false;
bool ss = true;
switch_type_c_plug_config(type_c, dr_mode, cc);
if (cc == ENABLE_CC2)
polarity = true;
switch (dr_mode) {
case USB_DR_MODE_HOST:
is_host = true;
break;
case USB_DR_MODE_PERIPHERAL:
is_device = true;
vbus = true;
break;
default:
dev_dbg(type_c->dev, "%s dr_mode=%d ==> no host or device\n",
__func__, dr_mode);
break;
}
dev_dbg(type_c->dev, "%s is_host=%d is_device=%d vbus=%d polarity=%d\n",
__func__, is_host, is_device, vbus, polarity);
/* for EXTCON_USB device mode */
extcon_set_state(type_c->edev, EXTCON_USB, is_device);
extcon_set_property(type_c->edev, EXTCON_USB,
EXTCON_PROP_USB_VBUS,
(union extcon_property_value)(int)vbus);
extcon_set_property(type_c->edev, EXTCON_USB,
EXTCON_PROP_USB_TYPEC_POLARITY,
(union extcon_property_value)(int)polarity);
extcon_set_property(type_c->edev, EXTCON_USB,
EXTCON_PROP_USB_SS,
(union extcon_property_value)(int)ss);
/* for EXTCON_USB_HOST host mode */
extcon_set_state(type_c->edev, EXTCON_USB_HOST, is_host);
extcon_set_property(type_c->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_VBUS,
(union extcon_property_value)(int)vbus);
extcon_set_property(type_c->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_TYPEC_POLARITY,
(union extcon_property_value)(int)polarity);
extcon_set_property(type_c->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_SS,
(union extcon_property_value)(int)ss);
/* sync EXTCON_USB and EXTCON_USB_HOST */
extcon_sync(type_c->edev, EXTCON_USB);
extcon_sync(type_c->edev, EXTCON_USB_HOST);
if (type_c->port) {
switch (dr_mode) {
case USB_DR_MODE_HOST:
typec_set_data_role(type_c->port, TYPEC_HOST);
typec_set_pwr_role(type_c->port, TYPEC_SOURCE);
break;
case USB_DR_MODE_PERIPHERAL:
typec_set_data_role(type_c->port, TYPEC_DEVICE);
typec_set_pwr_role(type_c->port, TYPEC_SINK);
break;
default:
dev_dbg(type_c->dev, "%s unknown dr_mode=%d\n",
__func__, dr_mode);
break;
}
}
}
/* connector attached/detached */
static int connector_attached(struct type_c_data *type_c, u32 cc, int dr_mode)
{
void __iomem *reg = type_c->reg_base + USB_TYPEC_CTRL;
cancel_delayed_work(&type_c->delayed_work);
switch_type_c_dr_mode(type_c, dr_mode, cc);
writel(ENABLE_TYPE_C_DETECT | readl(reg), reg);
return 0;
}
static int connector_detached(struct type_c_data *type_c, u32 cc, int dr_mode)
{
void __iomem *reg = type_c->reg_base + USB_TYPEC_CTRL;
writel(~ENABLE_TYPE_C_DETECT & readl(reg), reg);
switch_type_c_dr_mode(type_c, 0, cc);
schedule_delayed_work(&type_c->delayed_work, msecs_to_jiffies(DETECT_TIME));
return 0;
}
/* detect host device switch */
static int __detect_host_device(struct type_c_data *type_c, u32 rp_or_rd_en)
{
struct device *dev = type_c->dev;
void __iomem *reg_base = type_c->reg_base;
u32 cc1_config, cc2_config, default_ctrl;
u32 cc1_switch = 0;
default_ctrl = readl(reg_base + USB_TYPEC_CTRL) & DEBOUNCE_TIME_MASK;
writel(default_ctrl, reg_base + USB_TYPEC_CTRL);
cc1_config = readl(reg_base + USB_TYPEC_CTRL_CC1_0);
cc2_config = readl(reg_base + USB_TYPEC_CTRL_CC2_0);
cc1_config &= ~EN_CC_DET;
cc2_config &= ~EN_CC_DET;
writel(cc1_config, reg_base + USB_TYPEC_CTRL_CC1_0);
writel(cc2_config, reg_base + USB_TYPEC_CTRL_CC2_0);
if (soc_device_match(rtk_soc_kylin))
cc1_switch = cc1_config & CC_SWITCH_MASK;
cc1_config &= CC_CODE_MASK;
cc1_config |= rp_or_rd_en | cc1_switch;
cc2_config &= CC_CODE_MASK;
cc2_config |= rp_or_rd_en;
writel(cc2_config, reg_base + USB_TYPEC_CTRL_CC2_0);
writel(cc1_config, reg_base + USB_TYPEC_CTRL_CC1_0);
/* For kylin to disable external rd control gpio */
if (soc_device_match(rtk_soc_kylin)) {
struct gpio_desc *gpio = type_c->rd_ctrl_gpio_desc;
if (gpio && gpiod_direction_output(gpio, 1))
dev_err(dev, "%s ERROR set rd_ctrl_gpio_desc fail\n", __func__);
}
cc1_config |= EN_CC_DET;
cc2_config |= EN_CC_DET;
writel(cc1_config, reg_base + USB_TYPEC_CTRL_CC1_0);
writel(cc2_config, reg_base + USB_TYPEC_CTRL_CC2_0);
return 0;
}
static int detect_device(struct type_c_data *type_c)
{
return __detect_host_device(type_c, type_c->dfp_mode_rp_en);
}
static int detect_host(struct type_c_data *type_c)
{
return __detect_host_device(type_c, type_c->ufp_mode_rd_en);
}
static int host_device_switch_detection(struct type_c_data *type_c)
{
if (type_c->cc_mode == IN_HOST_MODE) {
type_c->cc_mode = IN_DEVICE_MODE;
detect_host(type_c);
} else {
type_c->cc_mode = IN_HOST_MODE;
detect_device(type_c);
}
return 0;
}
static int detect_type_c_state(struct type_c_data *type_c)
{
struct device *dev = type_c->dev;
void __iomem *reg_base = type_c->reg_base;
u32 int_status, cc_status, cc_status_check;
unsigned long flags;
spin_lock_irqsave(&type_c->lock, flags);
int_status = readl(reg_base + USB_TYPEC_CTRL);
cc_status = readl(reg_base + USB_TYPEC_STS);
type_c->connect_change = CONNECT_NO_CHANGE;
switch (type_c->cc_mode | type_c->is_attach) {
case IN_HOST_MODE | IN_ATTACH:
if (((cc_status & CC1_DET_STS) == CC1_DET_STS) && type_c->at_cc1 == AT_CC1) {
dev_dbg(dev, "IN host mode and cc1 device detach (cc_status=0x%x)",
cc_status);
type_c->is_attach = TO_DETACH;
type_c->connect_change = CONNECT_CHANGE;
} else if (((cc_status & CC2_DET_STS) == CC2_DET_STS) &&
type_c->at_cc1 == AT_CC2) {
dev_dbg(dev, "IN host mode and cc2 device detach (cc_status=0x%x)",
cc_status);
type_c->is_attach = TO_DETACH;
type_c->connect_change = CONNECT_CHANGE;
}
break;
case IN_HOST_MODE | IN_DETACH:
cc_status_check = readl(reg_base + USB_TYPEC_STS);
if (cc_status_check != (CC1_DET_STS | CC2_DET_STS)) {
if (in_interrupt()) {
/* Add delay time to avoid capacitive effect of cable. */
mdelay(300);
} else {
spin_unlock_irqrestore(&type_c->lock, flags);
/* Add delay time to avoid capacitive effect of cable. */
msleep(300);
spin_lock_irqsave(&type_c->lock, flags);
}
cc_status_check = readl(reg_base + USB_TYPEC_STS);
}
if (cc_status != cc_status_check) {
dev_warn(dev, "IN_HOST_MODE: cc_status (0x%x) != cc_status_check (0x%x)\n",
cc_status, cc_status_check);
cc_status = readl(reg_base + USB_TYPEC_STS);
}
if ((cc_status & CC1_DET_STS) == CC1_DET_STS_RD) {
dev_dbg(dev, "IN host mode and cc1 device attach (cc_status=0x%x)",
cc_status);
type_c->is_attach = TO_ATTACH;
type_c->at_cc1 = AT_CC1;
type_c->connect_change = CONNECT_CHANGE;
} else if ((cc_status & CC2_DET_STS) == CC2_DET_STS_RD) {
dev_dbg(dev, "In host mode and cc2 device attach (cc_status=0x%x)",
cc_status);
type_c->is_attach = TO_ATTACH;
type_c->at_cc1 = AT_CC2;
type_c->connect_change = CONNECT_CHANGE;
}
break;
case IN_DEVICE_MODE | IN_ATTACH:
if ((cc_status & CC1_DET_STS) < CC1_DET_STS_RP ||
(cc_status & CC2_DET_STS) < CC2_DET_STS_RP) {
/* Add a sw debounce to filter cc signal sent from apple pd adapter */
mdelay(5);
cc_status_check = readl(reg_base + USB_TYPEC_STS);
if (cc_status != cc_status_check) {
dev_dbg(dev, "IN_DEVICE_MODE: cc_status (0x%x) != cc_status_check (0x%x) maybe use a pd adapter\n",
cc_status, cc_status_check);
cc_status = cc_status_check;
}
}
if ((cc_status & CC1_DET_STS) < CC1_DET_STS_RP && type_c->at_cc1 == AT_CC1) {
dev_dbg(dev, "IN device mode and cc1 host disconnect (cc_status=0x%x)",
cc_status);
type_c->is_attach = TO_DETACH;
type_c->connect_change = CONNECT_CHANGE;
} else if ((cc_status & CC2_DET_STS) < CC2_DET_STS_RP &&
type_c->at_cc1 == AT_CC2) {
dev_dbg(dev, "IN device mode and cc2 host disconnect (cc_status=0x%x)",
cc_status);
type_c->is_attach = TO_DETACH;
type_c->connect_change = CONNECT_CHANGE;
}
break;
case IN_DEVICE_MODE | IN_DETACH:
cc_status_check = readl(reg_base + USB_TYPEC_STS);
if (cc_status_check != 0x0) {
if (in_interrupt()) {
/* Add delay time to avoid capacitive effect of cable. */
mdelay(300);
} else {
spin_unlock_irqrestore(&type_c->lock, flags);
/* Add delay time to avoid capacitive effect of cable. */
msleep(300);
spin_lock_irqsave(&type_c->lock, flags);
}
cc_status_check = readl(reg_base + USB_TYPEC_STS);
}
if (cc_status != cc_status_check) {
dev_warn(dev, "IN_DEVICE_MODE: cc_status (0x%x) != cc_status_check (0x%x)\n",
cc_status, cc_status_check);
cc_status = readl(reg_base + USB_TYPEC_STS);
}
if ((cc_status & CC1_DET_STS) >= CC1_DET_STS_RP) {
dev_dbg(dev, "IN device mode and cc1 host connect (cc_status=0x%x)",
cc_status);
type_c->at_cc1 = AT_CC1;
type_c->is_attach = TO_ATTACH;
type_c->connect_change = CONNECT_CHANGE;
} else if ((cc_status & CC2_DET_STS) >= CC2_DET_STS_RP) {
dev_dbg(dev, "IN device mode and cc2 host connect (cc_status=0x%x)",
cc_status);
type_c->at_cc1 = AT_CC2;
type_c->is_attach = TO_ATTACH;
type_c->connect_change = CONNECT_CHANGE;
}
break;
default:
dev_err(dev, "error host or device mode (cc_mode=%d, is_attach=%d) ",
type_c->cc_mode, type_c->is_attach);
}
type_c->int_status = int_status;
type_c->cc_status = cc_status;
spin_unlock_irqrestore(&type_c->lock, flags);
return 0;
}
static void host_device_switch(struct work_struct *work)
{
struct type_c_data *type_c = container_of(work, struct type_c_data,
delayed_work.work);
struct device *dev = type_c->dev;
unsigned long flags;
int connect_change = 0;
int cc_mode = 0;
int is_attach = 0;
int at_cc1 = 0;
spin_lock_irqsave(&type_c->lock, flags);
if (type_c->connect_change)
connect_change = type_c->connect_change;
spin_unlock_irqrestore(&type_c->lock, flags);
if (!connect_change)
detect_type_c_state(type_c);
spin_lock_irqsave(&type_c->lock, flags);
if (type_c->connect_change) {
connect_change = type_c->connect_change;
cc_mode = type_c->cc_mode;
is_attach = type_c->is_attach;
at_cc1 = type_c->at_cc1;
type_c->connect_change = CONNECT_NO_CHANGE;
} else {
host_device_switch_detection(type_c);
schedule_delayed_work(&type_c->delayed_work, msecs_to_jiffies(DETECT_TIME));
}
spin_unlock_irqrestore(&type_c->lock, flags);
if (!connect_change)
return;
dev_dbg(dev, "%s: usb cable connection change\n", __func__);
if (cc_mode == IN_HOST_MODE) {
if (is_attach && at_cc1)
connector_attached(type_c, ENABLE_CC1, USB_DR_MODE_HOST);
else if (is_attach && !at_cc1)
connector_attached(type_c, ENABLE_CC2, USB_DR_MODE_HOST);
else
connector_detached(type_c, DISABLE_CC, USB_DR_MODE_HOST);
} else if (cc_mode == IN_DEVICE_MODE) {
if (is_attach && at_cc1)
connector_attached(type_c, ENABLE_CC1, USB_DR_MODE_PERIPHERAL);
else if (is_attach && !at_cc1)
connector_attached(type_c, ENABLE_CC2, USB_DR_MODE_PERIPHERAL);
else
connector_detached(type_c, DISABLE_CC, USB_DR_MODE_PERIPHERAL);
} else {
dev_err(dev, "Error: IN unknown mode %d to %s at %s (cc_status=0x%x)\n",
cc_mode, is_attach ? "attach" : "detach",
at_cc1 ? "cc1" : "cc2", type_c->cc_status);
}
dev_info(dev, "Connection change OK: IN %s mode to %s at %s (cc_status=0x%x)\n",
cc_mode == IN_HOST_MODE ? "host" : "device",
is_attach ? "attach" : "detach",
at_cc1 ? "cc1" : "cc2", type_c->cc_status);
}
static irqreturn_t type_c_detect_irq(int irq, void *__data)
{
struct type_c_data *type_c = (struct type_c_data *)__data;
struct device *dev = type_c->dev;
void __iomem *reg = type_c->reg_base + USB_TYPEC_CTRL;
unsigned long flags;
detect_type_c_state(type_c);
spin_lock_irqsave(&type_c->lock, flags);
if (type_c->connect_change) {
dev_dbg(dev, "%s: IN %s mode to %s (at %s interrupt) int_status=0x%x, cc_status=0x%x",
__func__,
type_c->cc_mode == IN_HOST_MODE ? "host" : "device",
type_c->is_attach ? "attach" : "detach",
type_c->at_cc1 ? "cc1" : "cc2",
type_c->int_status, type_c->cc_status);
/* clear interrupt status */
writel(~ALL_CC_INT_STS & readl(reg), reg);
cancel_delayed_work(&type_c->delayed_work);
schedule_delayed_work(&type_c->delayed_work, msecs_to_jiffies(0));
} else {
static int local_count;
/* if no connect_change, we keep the status to avoid status lose */
if (local_count++ > 10) {
/* clear interrupt status */
writel(~ALL_CC_INT_STS & readl(reg), reg);
local_count = 0;
}
}
spin_unlock_irqrestore(&type_c->lock, flags);
return IRQ_HANDLED;
}
static int type_c_port_dr_set(struct typec_port *port,
enum typec_data_role role)
{
struct type_c_data *type_c = typec_get_drvdata(port);
u32 enable_cc;
unsigned long flags;
spin_lock_irqsave(&type_c->lock, flags);
enable_cc = type_c->at_cc1 ? ENABLE_CC1 : ENABLE_CC2;
spin_unlock_irqrestore(&type_c->lock, flags);
if (role == TYPEC_HOST)
switch_type_c_dr_mode(type_c, USB_DR_MODE_HOST, enable_cc);
else if (role == TYPEC_DEVICE)
switch_type_c_dr_mode(type_c, USB_DR_MODE_PERIPHERAL, enable_cc);
else
switch_type_c_dr_mode(type_c, 0, DISABLE_CC);
return 0;
}
static const struct typec_operations type_c_port_ops = {
.dr_set = type_c_port_dr_set,
};
#ifdef CONFIG_DEBUG_FS
static int type_c_parameter_show(struct seq_file *s, void *unused)
{
struct type_c_data *type_c = s->private;
struct type_c_cfg *type_c_cfg = type_c->type_c_cfg;
struct cc_param *cc_param;
unsigned long flags;
spin_lock_irqsave(&type_c->lock, flags);
seq_printf(s, "cc_dfp_mode %s\n",
({ char *tmp;
switch (type_c_cfg->cc_dfp_mode) {
case CC_MODE_DFP_USB:
tmp = "CC_MODE_DFP_USB"; break;
case CC_MODE_DFP_1_5:
tmp = "CC_MODE_DFP_1_5"; break;
case CC_MODE_DFP_3_0:
tmp = "CC_MODE_DFP_3_0"; break;
default:
tmp = "?"; break;
} tmp; }));
seq_printf(s, "dfp_mode_rp_en 0x%x\n", type_c->dfp_mode_rp_en);
seq_printf(s, "ufp_mode_rd_en 0x%x\n", type_c->ufp_mode_rd_en);
seq_printf(s, "cc1_code 0x%x\n", type_c->cc1_code);
seq_printf(s, "cc2_code 0x%x\n", type_c->cc2_code);
seq_printf(s, "cc1_vref 0x%x\n", type_c->cc1_vref);
seq_printf(s, "cc2_vref 0x%x\n", type_c->cc2_vref);
seq_printf(s, "debounce 0x%x\n", type_c->debounce);
seq_puts(s, "\n");
cc_param = &type_c_cfg->cc1_param;
seq_puts(s, "cc1_param:\n");
seq_printf(s, " rp_4p7k_code 0x%x\n", cc_param->rp_4p7k_code);
seq_printf(s, " rp_36k_code 0x%x\n", cc_param->rp_36k_code);
seq_printf(s, " rp_12k_code 0x%x\n", cc_param->rp_12k_code);
seq_printf(s, " rd_code 0x%x\n", cc_param->rd_code);
seq_printf(s, " vref_2p6v 0x%x\n", cc_param->vref_2p6v);
seq_printf(s, " vref_1p23v 0x%x\n", cc_param->vref_1p23v);
seq_printf(s, " vref_0p8v 0x%x\n", cc_param->vref_0p8v);
seq_printf(s, " vref_0p66v 0x%x\n", cc_param->vref_0p66v);
seq_printf(s, " vref_0p4v 0x%x\n", cc_param->vref_0p4v);
seq_printf(s, " vref_0p2v 0x%x\n", cc_param->vref_0p2v);
seq_printf(s, " vref_1_1p6v 0x%x\n", cc_param->vref_1_1p6v);
seq_printf(s, " vref_0_1p6v 0x%x\n", cc_param->vref_0_1p6v);
cc_param = &type_c_cfg->cc2_param;
seq_puts(s, "cc2_param:\n");
seq_printf(s, " rp_4p7k_code 0x%x\n", cc_param->rp_4p7k_code);
seq_printf(s, " rp_36k_code 0x%x\n", cc_param->rp_36k_code);
seq_printf(s, " rp_12k_code 0x%x\n", cc_param->rp_12k_code);
seq_printf(s, " rd_code 0x%x\n", cc_param->rd_code);
seq_printf(s, " vref_2p6v 0x%x\n", cc_param->vref_2p6v);
seq_printf(s, " vref_1p23v 0x%x\n", cc_param->vref_1p23v);
seq_printf(s, " vref_0p8v 0x%x\n", cc_param->vref_0p8v);
seq_printf(s, " vref_0p66v 0x%x\n", cc_param->vref_0p66v);
seq_printf(s, " vref_0p4v 0x%x\n", cc_param->vref_0p4v);
seq_printf(s, " vref_0p2v 0x%x\n", cc_param->vref_0p2v);
seq_printf(s, " vref_1_1p6v 0x%x\n", cc_param->vref_1_1p6v);
seq_printf(s, " vref_0_1p6v 0x%x\n", cc_param->vref_0_1p6v);
spin_unlock_irqrestore(&type_c->lock, flags);
return 0;
}
static int type_c_parameter_open(struct inode *inode, struct file *file)
{
return single_open(file, type_c_parameter_show, inode->i_private);
}
static const struct file_operations type_c_parameter_fops = {
.open = type_c_parameter_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static int type_c_status_show(struct seq_file *s, void *unused)
{
struct type_c_data *type_c = s->private;
unsigned long flags;
spin_lock_irqsave(&type_c->lock, flags);
seq_printf(s, "In %s mode %s at %s (cc_status=0x%x)\n",
type_c->cc_mode == IN_HOST_MODE ? "host" : "device",
type_c->is_attach ? "attach" : "detach",
type_c->at_cc1 ? "cc1" : "cc2", type_c->cc_status);
seq_printf(s, "Read Register (type_c_ctrl_cc1_0=0x%x)\n",
readl(type_c->reg_base + 0x0));
seq_printf(s, "Read Register (type_c_ctrl_cc1_1=0x%x)\n",
readl(type_c->reg_base + 0x4));
seq_printf(s, "Read Register (type_c_ctrl_cc2_0=0x%x)\n",
readl(type_c->reg_base + 0x8));
seq_printf(s, "Read Register (type_c_ctrl_cc2_1=0x%x)\n",
readl(type_c->reg_base + 0xc));
seq_printf(s, "Read Register (type_c_status=0x%x)\n",
readl(type_c->reg_base + 0x10));
seq_printf(s, "Read Register (type_c_ctrl=0x%x)\n",
readl(type_c->reg_base + 0x14));
spin_unlock_irqrestore(&type_c->lock, flags);
return 0;
}
static int type_c_status_open(struct inode *inode, struct file *file)
{
return single_open(file, type_c_status_show, inode->i_private);
}
static const struct file_operations type_c_status_fops = {
.open = type_c_status_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static inline void create_debug_files(struct type_c_data *type_c)
{
type_c->debug_dir = debugfs_create_dir("type_c", usb_debug_root);
debugfs_create_file("parameter", 0444, type_c->debug_dir, type_c,
&type_c_parameter_fops);
debugfs_create_file("status", 0444, type_c->debug_dir, type_c,
&type_c_status_fops);
}
static inline void remove_debug_files(struct type_c_data *type_c)
{
debugfs_remove_recursive(type_c->debug_dir);
}
#else
static inline void create_debug_files(struct type_c_data *type_c) { }
static inline void remove_debug_files(struct type_c_data *type_c) { }
#endif /* CONFIG_DEBUG_FS */
/* Init and probe */
static inline s8 get_value(s8 value)
{
return (((s8)value & 0x8) ? (-(s8)(0x7 & value)) : ((s8)(value)));
}
static int __updated_type_c_parameter_by_efuse(struct type_c_data *type_c)
{
struct type_c_cfg *type_c_cfg = type_c->type_c_cfg;
struct cc_param *cc_param;
struct nvmem_cell *cell;
s8 cc1_4p7k = 0;
s8 cc1_12k = 0;
s8 cc1_0p2v = 0;
s8 cc1_0p8v = 0;
s8 cc1_2p6v = 0;
s8 cc1_0p66v = 0;
s8 cc1_1p23v = 0;
s8 cc2_4p7k = 0;
s8 cc2_12k = 0;
s8 cc2_0p2v = 0;
s8 cc2_0p8v = 0;
s8 cc2_2p6v = 0;
s8 cc2_0p66v = 0;
s8 cc2_1p23v = 0;
cell = nvmem_cell_get(type_c->dev, "usb-cal");
if (IS_ERR(cell)) {
dev_warn(type_c->dev, "%s failed to get usb-cal: %ld\n",
__func__, PTR_ERR(cell));
} else {
unsigned char *buf;
size_t buf_size;
int value_size = 4;
int value_mask = (BIT(value_size) - 1);
buf = nvmem_cell_read(cell, &buf_size);
if (!IS_ERR(buf)) {
cc1_0p2v = get_value((buf[0] >> value_size * 0) & value_mask);
cc1_0p8v = get_value((buf[0] >> value_size * 1) & value_mask);
cc1_2p6v = get_value((buf[1] >> value_size * 0) & value_mask);
cc1_0p66v = get_value((buf[1] >> value_size * 1) & value_mask);
cc1_1p23v = get_value((buf[2] >> value_size * 0) & value_mask);
cc2_0p2v = get_value((buf[3] >> value_size * 0) & value_mask);
cc2_0p8v = get_value((buf[3] >> value_size * 1) & value_mask);
cc2_2p6v = get_value((buf[4] >> value_size * 0) & value_mask);
cc2_0p66v = get_value((buf[4] >> value_size * 1) & value_mask);
cc2_1p23v = get_value((buf[5] >> value_size * 0) & value_mask);
cc1_4p7k = get_value((buf[6] >> value_size * 0) & value_mask);
cc1_12k = get_value((buf[6] >> value_size * 1) & value_mask);
cc2_4p7k = get_value((buf[7] >> value_size * 0) & value_mask);
cc2_12k = get_value((buf[7] >> value_size * 1) & value_mask);
kfree(buf);
}
nvmem_cell_put(cell);
}
dev_dbg(type_c->dev, "check efuse cc1_4p7k=%d cc1_12k=%d cc2_4p7k=%d cc2_12k=%d\n",
cc1_4p7k, cc1_12k, cc2_4p7k, cc2_12k);
dev_dbg(type_c->dev, "check efuse cc1_0p2v=%d cc1_0p8v=%d cc1_2p6v=%d cc1_0p66v=%d cc1_1p23v=%d\n",
cc1_0p2v, cc1_0p8v, cc1_2p6v, cc1_0p66v, cc1_1p23v);
dev_dbg(type_c->dev, "check efuse cc2_0p2v=%d cc2_0p8v=%d cc2_2p6v=%d cc2_0p66v=%d cc2_1p23v=%d\n",
cc2_0p2v, cc2_0p8v, cc2_2p6v, cc2_0p66v, cc2_1p23v);
cc_param = &type_c_cfg->cc1_param;
cc_param->rp_4p7k_code = cc_param->rp_4p7k_code + cc1_4p7k;
cc_param->rp_12k_code = cc_param->rp_12k_code + cc1_12k;
cc_param->vref_1p23v = cc_param->vref_1p23v + cc1_1p23v;
cc_param->vref_0p66v = cc_param->vref_0p66v + cc1_0p66v;
cc_param->vref_2p6v = cc_param->vref_2p6v + cc1_2p6v;
cc_param->vref_0p8v = cc_param->vref_0p8v + cc1_0p8v;
cc_param->vref_0p2v = cc_param->vref_0p2v + cc1_0p2v;
cc_param = &type_c_cfg->cc2_param;
cc_param->rp_4p7k_code = cc_param->rp_4p7k_code + cc2_4p7k;
cc_param->rp_12k_code = cc_param->rp_12k_code + cc2_12k;
cc_param->vref_1p23v = cc_param->vref_1p23v + cc2_1p23v;
cc_param->vref_0p66v = cc_param->vref_0p66v + cc2_0p66v;
cc_param->vref_2p6v = cc_param->vref_2p6v + cc2_2p6v;
cc_param->vref_0p8v = cc_param->vref_0p8v + cc2_0p8v;
cc_param->vref_0p2v = cc_param->vref_0p2v + cc2_0p2v;
return 0;
}
static int __updated_type_c_parameter_by_efuse_v2(struct type_c_data *type_c)
{
struct type_c_cfg *type_c_cfg = type_c->type_c_cfg;
struct cc_param *cc_param;
struct nvmem_cell *cell;
s8 cc1_4p7k = 0;
s8 cc1_12k = 0;
s8 cc1_0p2v = 0;
s8 cc1_0p8v = 0;
s8 cc1_2p6v = 0;
s8 cc1_0p66v = 0;
s8 cc1_1p23v = 0;
s8 cc2_4p7k = 0;
s8 cc2_12k = 0;
s8 cc2_0p2v = 0;
s8 cc2_0p8v = 0;
s8 cc2_2p6v = 0;
s8 cc2_0p66v = 0;
s8 cc2_1p23v = 0;
cell = nvmem_cell_get(type_c->dev, "usb-type-c-cal");
if (IS_ERR(cell)) {
dev_warn(type_c->dev, "%s failed to get usb-type-c-cal: %ld\n",
__func__, PTR_ERR(cell));
} else {
unsigned char *buf;
size_t buf_size;
int value_size = 0;
int value_mask = (BIT(value_size) - 1);
buf = nvmem_cell_read(cell, &buf_size);
if (!IS_ERR(buf)) {
value_size = 5;
value_mask = (BIT(value_size) - 1);
cc1_4p7k = buf[0] & value_mask;
cc1_12k = buf[1] & value_mask;
cc2_4p7k = buf[2] & value_mask;
cc2_12k = buf[3] & value_mask;
value_size = 4;
value_mask = (BIT(value_size) - 1);
cc1_0p2v = (buf[4] >> value_size * 0) & value_mask;
cc1_0p66v = (buf[4] >> value_size * 1) & value_mask;
cc1_0p8v = (buf[5] >> value_size * 0) & value_mask;
cc1_1p23v = (buf[5] >> value_size * 1) & value_mask;
cc1_2p6v = (buf[6] >> value_size * 0) & value_mask;
cc2_0p2v = (buf[6] >> value_size * 1) & value_mask;
cc2_0p66v = (buf[7] >> value_size * 0) & value_mask;
cc2_0p8v = (buf[7] >> value_size * 1) & value_mask;
cc2_1p23v = (buf[8] >> value_size * 0) & value_mask;
cc2_2p6v = (buf[8] >> value_size * 1) & value_mask;
kfree(buf);
}
nvmem_cell_put(cell);
}
dev_dbg(type_c->dev, "check efuse v2 cc1_4p7k=%d cc1_12k=%d cc2_4p7k=%d cc2_12k=%d\n",
cc1_4p7k, cc1_12k, cc2_4p7k, cc2_12k);
dev_dbg(type_c->dev, "check efuse v2 cc1_0p2v=%d cc1_0p8v=%d cc1_2p6v=%d cc1_0p66v=%d cc1_1p23v=%d\n",
cc1_0p2v, cc1_0p8v, cc1_2p6v, cc1_0p66v, cc1_1p23v);
dev_dbg(type_c->dev, "check efuse v2 cc2_0p2v=%d cc2_0p8v=%d cc2_2p6v=%d cc2_0p66v=%d cc2_1p23v=%d\n",
cc2_0p2v, cc2_0p8v, cc2_2p6v, cc2_0p66v, cc2_1p23v);
cc_param = &type_c_cfg->cc1_param;
if (cc1_4p7k)
cc_param->rp_4p7k_code = cc1_4p7k;
if (cc1_12k)
cc_param->rp_12k_code = cc1_12k;
if (cc1_1p23v)
cc_param->vref_1p23v = cc1_1p23v;
if (cc1_0p66v)
cc_param->vref_0p66v = cc1_0p66v;
if (cc1_2p6v)
cc_param->vref_2p6v = cc1_2p6v;
if (cc1_0p8v)
cc_param->vref_0p8v = cc1_0p8v;
if (cc1_0p2v)
cc_param->vref_0p2v = cc1_0p2v;
cc_param = &type_c_cfg->cc2_param;
if (cc2_4p7k)
cc_param->rp_4p7k_code = cc2_4p7k;
if (cc2_12k)
cc_param->rp_12k_code = cc2_12k;
if (cc2_1p23v)
cc_param->vref_1p23v = cc2_1p23v;
if (cc2_0p66v)
cc_param->vref_0p66v = cc2_0p66v;
if (cc2_2p6v)
cc_param->vref_2p6v = cc2_2p6v;
if (cc2_0p8v)
cc_param->vref_0p8v = cc2_0p8v;
if (cc2_0p2v)
cc_param->vref_0p2v = cc2_0p2v;
return 0;
}
static void get_default_type_c_parameter(struct type_c_data *type_c)
{
void __iomem *reg;
int val;
type_c->dfp_mode_rp_en = dfp_mode(CC_MODE_DFP_3_0) | EN_RP4P7K;
type_c->ufp_mode_rd_en = EN_RD;
reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_0;
val = readl(reg);
type_c->cc1_code = CC_CODE_MASK & val;
reg = type_c->reg_base + USB_TYPEC_CTRL_CC2_0;
val = readl(reg);
type_c->cc2_code = CC_CODE_MASK & val;
reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_1;
val = readl(reg);
type_c->cc1_vref = val;
reg = type_c->reg_base + USB_TYPEC_CTRL_CC2_1;
val = readl(reg);
type_c->cc2_vref = val;
reg = type_c->reg_base + USB_TYPEC_CTRL;
val = readl(reg);
type_c->debounce = DEBOUNCE_TIME_MASK & val;
}
static int setup_type_c_parameter(struct type_c_data *type_c)
{
struct type_c_cfg *type_c_cfg = type_c->type_c_cfg;
struct cc_param *cc_param;
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 */ }
};
if (type_c_cfg->use_defalut_parameter) {
get_default_type_c_parameter(type_c);
return 0;
}
if (soc_device_match(rtk_soc_efuse_v1))
__updated_type_c_parameter_by_efuse(type_c);
else
__updated_type_c_parameter_by_efuse_v2(type_c);
/*
* UFP rd vref_ufp : 1p23v, 0p66v, 0p2v
* DFP_USB rp36k vref_dfp_usb: 0_1p6v, 0p2v, unused
* DFP_1.5 rp12k vref_dfp_1_5: 1_1p6v, 0p4v, 0p2v
* DFP_3.0 rp4p7k vref_dfp_3_0: 2p6v, 0p8v, 0p2v
*/
switch (type_c_cfg->cc_dfp_mode) {
case CC_MODE_DFP_USB:
type_c->dfp_mode_rp_en = dfp_mode(CC_MODE_DFP_USB) | EN_RP36K;
break;
case CC_MODE_DFP_1_5:
type_c->dfp_mode_rp_en = dfp_mode(CC_MODE_DFP_1_5) | EN_RP12K;
break;
case CC_MODE_DFP_3_0:
type_c->dfp_mode_rp_en = dfp_mode(CC_MODE_DFP_3_0) | EN_RP4P7K;
break;
default:
dev_err(type_c->dev, "%s: unknown cc_dfp_mode %d\n",
__func__, type_c_cfg->cc_dfp_mode);
}
type_c->ufp_mode_rd_en = EN_RD;
cc_param = &type_c_cfg->cc1_param;
type_c->cc1_code = rp4pk_code(cc_param->rp_4p7k_code) |
rp36k_code(cc_param->rp_36k_code) |
rp12k_code(cc_param->rp_12k_code) |
rd_code(cc_param->rd_code);
if (type_c_cfg->parameter_ver == PARAMETER_V0)
type_c->cc1_vref = V0_vref_2p6v(cc_param->vref_2p6v) |
V0_vref_1p23v(cc_param->vref_1p23v) |
V0_vref_0p8v(cc_param->vref_0p8v) |
V0_vref_0p66v(cc_param->vref_0p66v) |
V0_vref_0p4v(cc_param->vref_0p4v) |
V0_vref_0p2v(cc_param->vref_0p2v) |
V0_vref_1_1p6v(cc_param->vref_1_1p6v) |
V0_vref_0_1p6v(cc_param->vref_0_1p6v);
else if (type_c_cfg->parameter_ver == PARAMETER_V1)
type_c->cc1_vref = V1_vref_2p6v(cc_param->vref_2p6v) |
V1_vref_1p23v(cc_param->vref_1p23v) |
V1_vref_0p8v(cc_param->vref_0p8v) |
V1_vref_0p66v(cc_param->vref_0p66v) |
V1_vref_0p4v(cc_param->vref_0p4v) |
V1_vref_0p2v(cc_param->vref_0p2v) |
V1_vref_1_1p6v(cc_param->vref_1_1p6v) |
V1_vref_0_1p6v(cc_param->vref_0_1p6v);
else
dev_err(type_c->dev, "%s: unknown parameter_ver %d\n",
__func__, type_c_cfg->parameter_ver);
cc_param = &type_c_cfg->cc2_param;
type_c->cc2_code = rp4pk_code(cc_param->rp_4p7k_code)
| rp36k_code(cc_param->rp_36k_code)
| rp12k_code(cc_param->rp_12k_code)
| rd_code(cc_param->rd_code);
if (type_c_cfg->parameter_ver == PARAMETER_V0)
type_c->cc2_vref = V0_vref_2p6v(cc_param->vref_2p6v) |
V0_vref_1p23v(cc_param->vref_1p23v) |
V0_vref_0p8v(cc_param->vref_0p8v) |
V0_vref_0p66v(cc_param->vref_0p66v) |
V0_vref_0p4v(cc_param->vref_0p4v) |
V0_vref_0p2v(cc_param->vref_0p2v) |
V0_vref_1_1p6v(cc_param->vref_1_1p6v) |
V0_vref_0_1p6v(cc_param->vref_0_1p6v);
else if (type_c_cfg->parameter_ver == PARAMETER_V1)
type_c->cc2_vref = V1_vref_2p6v(cc_param->vref_2p6v) |
V1_vref_1p23v(cc_param->vref_1p23v) |
V1_vref_0p8v(cc_param->vref_0p8v) |
V1_vref_0p66v(cc_param->vref_0p66v) |
V1_vref_0p4v(cc_param->vref_0p4v) |
V1_vref_0p2v(cc_param->vref_0p2v) |
V1_vref_1_1p6v(cc_param->vref_1_1p6v) |
V1_vref_0_1p6v(cc_param->vref_0_1p6v);
else
dev_err(type_c->dev, "%s: unknown parameter_ver %d\n",
__func__, type_c_cfg->parameter_ver);
type_c->debounce = (type_c_cfg->debounce_val << 1) | DEBOUNCE_EN;
return 0;
}
static int extcon_rtk_type_c_init(struct type_c_data *type_c)
{
struct device *dev = type_c->dev;
unsigned long flags;
void __iomem *reg;
int val;
spin_lock_irqsave(&type_c->lock, flags);
/* set parameter */
reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_0;
val = readl(reg);
val = (~CC_CODE_MASK & val) | (type_c->cc1_code & CC_CODE_MASK);
writel(val, reg);
reg = type_c->reg_base + USB_TYPEC_CTRL_CC2_0;
val = readl(reg);
val = (~CC_CODE_MASK & val) | (type_c->cc2_code & CC_CODE_MASK);
reg = type_c->reg_base + USB_TYPEC_CTRL_CC1_1;
writel(type_c->cc1_vref, reg);
reg = type_c->reg_base + USB_TYPEC_CTRL_CC2_1;
writel(type_c->cc2_vref, reg);
reg = type_c->reg_base + USB_TYPEC_CTRL;
val = readl(reg);
val = (~DEBOUNCE_TIME_MASK & val) | (type_c->debounce & DEBOUNCE_TIME_MASK);
dev_info(dev, "First check USB_DR_MODE_PERIPHERAL");
type_c->cc_mode = IN_DEVICE_MODE;
type_c->is_attach = IN_DETACH;
type_c->connect_change = CONNECT_NO_CHANGE;
detect_host(type_c);
spin_unlock_irqrestore(&type_c->lock, flags);
schedule_delayed_work(&type_c->delayed_work, msecs_to_jiffies(0));
if (!type_c->port) {
struct typec_capability typec_cap = { };
struct fwnode_handle *fwnode;
const char *buf;
int ret;
typec_cap.revision = USB_TYPEC_REV_1_0;
typec_cap.prefer_role = TYPEC_NO_PREFERRED_ROLE;
typec_cap.driver_data = type_c;
typec_cap.ops = &type_c_port_ops;
fwnode = device_get_named_child_node(dev, "connector");
if (!fwnode)
return -EINVAL;
ret = fwnode_property_read_string(fwnode, "power-role", &buf);
if (ret) {
dev_err(dev, "power-role not found: %d\n", ret);
return ret;
}
ret = typec_find_port_power_role(buf);
if (ret < 0)
return ret;
typec_cap.type = ret;
ret = fwnode_property_read_string(fwnode, "data-role", &buf);
if (ret) {
dev_err(dev, "data-role not found: %d\n", ret);
return ret;
}
ret = typec_find_port_data_role(buf);
if (ret < 0)
return ret;
typec_cap.data = ret;
type_c->port = typec_register_port(type_c->dev, &typec_cap);
if (IS_ERR(type_c->port))
return PTR_ERR(type_c->port);
}
return 0;
}
static int extcon_rtk_type_c_edev_register(struct type_c_data *type_c)
{
struct device *dev = type_c->dev;
int ret = 0;
type_c->edev = devm_extcon_dev_allocate(dev, usb_type_c_cable);
if (IS_ERR(type_c->edev)) {
dev_err(dev, "failed to allocate extcon device\n");
return -ENOMEM;
}
ret = devm_extcon_dev_register(dev, type_c->edev);
if (ret < 0) {
dev_err(dev, "failed to register extcon device\n");
return ret;
}
extcon_set_property_capability(type_c->edev, EXTCON_USB,
EXTCON_PROP_USB_VBUS);
extcon_set_property_capability(type_c->edev, EXTCON_USB,
EXTCON_PROP_USB_TYPEC_POLARITY);
extcon_set_property_capability(type_c->edev, EXTCON_USB,
EXTCON_PROP_USB_SS);
extcon_set_property_capability(type_c->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_VBUS);
extcon_set_property_capability(type_c->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_TYPEC_POLARITY);
extcon_set_property_capability(type_c->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_SS);
return ret;
}
static int extcon_rtk_type_c_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct type_c_data *type_c;
const struct type_c_cfg *type_c_cfg;
int ret = 0;
type_c = devm_kzalloc(dev, sizeof(*type_c), GFP_KERNEL);
if (!type_c)
return -ENOMEM;
type_c->reg_base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(type_c->reg_base))
return PTR_ERR(type_c->reg_base);
type_c->dev = dev;
type_c->irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
if (type_c->irq <= 0) {
dev_err(&pdev->dev, "Type C driver with no IRQ. Check %s setup!\n",
dev_name(&pdev->dev));
ret = -ENODEV;
goto err;
}
ret = devm_request_irq(dev, type_c->irq, type_c_detect_irq,
IRQF_SHARED, "type_c_detect", type_c);
spin_lock_init(&type_c->lock);
type_c->rd_ctrl_gpio_desc = NULL;
if (soc_device_match(rtk_soc_kylin)) {
struct gpio_desc *gpio;
gpio = fwnode_gpiod_get_index(of_fwnode_handle(dev->of_node),
"realtek,rd-ctrl-gpios",
0, GPIOD_OUT_HIGH, "rd-ctrl-gpio");
if (IS_ERR(gpio)) {
dev_err(dev, "Error rd_ctrl-gpios no found (err=%d)\n",
(int)PTR_ERR(gpio));
} else {
type_c->rd_ctrl_gpio_desc = gpio;
dev_dbg(dev, "%s get rd-ctrl-gpios (id=%d) OK\n",
__func__, desc_to_gpio(gpio));
}
}
type_c_cfg = of_device_get_match_data(dev);
if (!type_c_cfg) {
dev_err(dev, "type_c config are not assigned!\n");
ret = -EINVAL;
goto err;
}
type_c->type_c_cfg = devm_kzalloc(dev, sizeof(*type_c_cfg), GFP_KERNEL);
if (!type_c->type_c_cfg)
return -ENOMEM;
memcpy(type_c->type_c_cfg, type_c_cfg, sizeof(*type_c_cfg));
if (setup_type_c_parameter(type_c)) {
dev_err(dev, "ERROR: %s to setup type c parameter!!", __func__);
ret = -EINVAL;
goto err;
}
INIT_DELAYED_WORK(&type_c->delayed_work, host_device_switch);
ret = extcon_rtk_type_c_init(type_c);
if (ret) {
dev_err(dev, "%s failed to init type_c\n", __func__);
goto err;
}
platform_set_drvdata(pdev, type_c);
ret = extcon_rtk_type_c_edev_register(type_c);
create_debug_files(type_c);
return 0;
err:
dev_err(&pdev->dev, "%s: Probe fail, %d\n", __func__, ret);
return ret;
}
static void extcon_rtk_type_c_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct type_c_data *type_c = dev_get_drvdata(dev);
u32 default_ctrl;
unsigned long flags;
remove_debug_files(type_c);
if (type_c->port) {
typec_unregister_port(type_c->port);
type_c->port = NULL;
}
cancel_delayed_work_sync(&type_c->delayed_work);
flush_delayed_work(&type_c->delayed_work);
WARN_ON_ONCE(delayed_work_pending(&type_c->delayed_work));
spin_lock_irqsave(&type_c->lock, flags);
/* disable interrupt */
default_ctrl = readl(type_c->reg_base + USB_TYPEC_CTRL) &
DEBOUNCE_TIME_MASK;
writel(default_ctrl, type_c->reg_base + USB_TYPEC_CTRL);
/* disable cc detect, rp, rd */
writel(PLR_EN, type_c->reg_base + USB_TYPEC_CTRL_CC1_0);
writel(0, type_c->reg_base + USB_TYPEC_CTRL_CC2_0);
spin_unlock_irqrestore(&type_c->lock, flags);
if (type_c->rd_ctrl_gpio_desc)
gpiod_put(type_c->rd_ctrl_gpio_desc);
type_c->rd_ctrl_gpio_desc = NULL;
free_irq(type_c->irq, type_c);
}
static const struct type_c_cfg rtd1295_type_c_cfg = {
.parameter_ver = PARAMETER_V0,
.cc_dfp_mode = CC_MODE_DFP_3_0,
.cc1_param = { .rp_4p7k_code = 0xb,
.rp_36k_code = 0x17,
.rp_12k_code = 0x10,
.rd_code = 0,
.ra_code = 0,
.vref_2p6v = 0x0,
.vref_1p23v = 0x0,
.vref_0p8v = 0x3,
.vref_0p66v = 0x0,
.vref_0p4v = 0x0,
.vref_0p2v = 0x4,
.vref_1_1p6v = 0,
.vref_0_1p6v = 0 },
.cc2_param = { .rp_4p7k_code = 0xc,
.rp_36k_code = 0x17,
.rp_12k_code = 0x12,
.rd_code = 0,
.ra_code = 0,
.vref_2p6v = 0x2,
.vref_1p23v = 0x0,
.vref_0p8v = 0x3,
.vref_0p66v = 0x0,
.vref_0p4v = 0x0,
.vref_0p2v = 0x5,
.vref_1_1p6v = 0,
.vref_0_1p6v = 0 },
.debounce_val = 0x7f, /* 1b,1us 7f,4.7us */
.use_defalut_parameter = false,
};
static const struct type_c_cfg rtd1395_type_c_cfg = {
.parameter_ver = PARAMETER_V0,
.cc_dfp_mode = CC_MODE_DFP_3_0,
.cc1_param = { .rp_4p7k_code = 0xc,
.rp_36k_code = 0xb,
.rp_12k_code = 0xe,
.rd_code = 0x10,
.ra_code = 0x0,
.vref_2p6v = 0x0,
.vref_1p23v = 0x1,
.vref_0p8v = 0x0,
.vref_0p66v = 0x0,
.vref_0p4v = 0x3,
.vref_0p2v = 0x0,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.cc2_param = { .rp_4p7k_code = 0xb,
.rp_36k_code = 0x9,
.rp_12k_code = 0xe,
.rd_code = 0xf,
.ra_code = 0x0,
.vref_2p6v = 0x1,
.vref_1p23v = 0x3,
.vref_0p8v = 0x3,
.vref_0p66v = 0x2,
.vref_0p4v = 0x3,
.vref_0p2v = 0x2,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.debounce_val = 0x7f, /* 1b,1us 7f,4.7us */
.use_defalut_parameter = false,
};
static const struct type_c_cfg rtd1619_type_c_cfg = {
.parameter_ver = PARAMETER_V0,
.cc_dfp_mode = CC_MODE_DFP_3_0,
.cc1_param = { .rp_4p7k_code = 0xc,
.rp_36k_code = 0xf,
.rp_12k_code = 0xe,
.rd_code = 0x11,
.ra_code = 0x0,
.vref_2p6v = 0x5,
.vref_1p23v = 0x7,
.vref_0p8v = 0xa,
.vref_0p66v = 0xa,
.vref_0p4v = 0x3,
.vref_0p2v = 0x2,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.cc2_param = { .rp_4p7k_code = 0xc,
.rp_36k_code = 0xf,
.rp_12k_code = 0xe,
.rd_code = 0xf,
.ra_code = 0x0,
.vref_2p6v = 0x5,
.vref_1p23v = 0x8,
.vref_0p8v = 0xa,
.vref_0p66v = 0xa,
.vref_0p4v = 0x3,
.vref_0p2v = 0x2,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.debounce_val = 0x7f, /* 1b,1us 7f,4.7us */
.use_defalut_parameter = false,
};
static const struct type_c_cfg rtd1319_type_c_cfg = {
.parameter_ver = PARAMETER_V0,
.cc_dfp_mode = CC_MODE_DFP_1_5,
.cc1_param = { .rp_4p7k_code = 0x9,
.rp_36k_code = 0xe,
.rp_12k_code = 0x9,
.rd_code = 0x9,
.ra_code = 0x7,
.vref_2p6v = 0x3,
.vref_1p23v = 0x7,
.vref_0p8v = 0x7,
.vref_0p66v = 0x6,
.vref_0p4v = 0x2,
.vref_0p2v = 0x3,
.vref_1_1p6v = 0x4,
.vref_0_1p6v = 0x7 },
.cc2_param = { .rp_4p7k_code = 0x8,
.rp_36k_code = 0xe,
.rp_12k_code = 0x9,
.rd_code = 0x9,
.ra_code = 0x7,
.vref_2p6v = 0x3,
.vref_1p23v = 0x7,
.vref_0p8v = 0x7,
.vref_0p66v = 0x6,
.vref_0p4v = 0x3,
.vref_0p2v = 0x3,
.vref_1_1p6v = 0x6,
.vref_0_1p6v = 0x7 },
.debounce_val = 0x7f, /* 1b,1us 7f,4.7us */
.use_defalut_parameter = false,
};
static const struct type_c_cfg rtd1312c_type_c_cfg = {
.parameter_ver = PARAMETER_V0,
.cc_dfp_mode = CC_MODE_DFP_1_5,
.cc1_param = { .rp_4p7k_code = 0xe,
.rp_36k_code = 0xc,
.rp_12k_code = 0xc,
.rd_code = 0xa,
.ra_code = 0x3,
.vref_2p6v = 0xa,
.vref_1p23v = 0x7,
.vref_0p8v = 0x7,
.vref_0p66v = 0x7,
.vref_0p4v = 0x4,
.vref_0p2v = 0x4,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.cc2_param = { .rp_4p7k_code = 0xe,
.rp_36k_code = 0xc,
.rp_12k_code = 0xc,
.rd_code = 0xa,
.ra_code = 0x3,
.vref_2p6v = 0xa,
.vref_1p23v = 0x7,
.vref_0p8v = 0x7,
.vref_0p66v = 0x7,
.vref_0p4v = 0x4,
.vref_0p2v = 0x4,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.debounce_val = 0x7f, /* 1b,1us 7f,4.7us */
.use_defalut_parameter = false,
};
static const struct type_c_cfg rtd1619b_type_c_cfg = {
.parameter_ver = PARAMETER_V1,
.cc_dfp_mode = CC_MODE_DFP_1_5,
.cc1_param = { .rp_4p7k_code = 0xf,
.rp_36k_code = 0xf,
.rp_12k_code = 0xf,
.rd_code = 0xf,
.ra_code = 0x7,
.vref_2p6v = 0x9,
.vref_1p23v = 0x7,
.vref_0p8v = 0x9,
.vref_0p66v = 0x8,
.vref_0p4v = 0x7,
.vref_0p2v = 0x9,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.cc2_param = { .rp_4p7k_code = 0xf,
.rp_36k_code = 0xf,
.rp_12k_code = 0xf,
.rd_code = 0xf,
.ra_code = 0x7,
.vref_1p23v = 0x7,
.vref_0p8v = 0x9,
.vref_0p66v = 0x8,
.vref_0p4v = 0x7,
.vref_0p2v = 0x8,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.debounce_val = 0x7f, /* 1b,1us 7f,4.7us */
.use_defalut_parameter = false,
};
static const struct type_c_cfg rtd1319d_type_c_cfg = {
.parameter_ver = PARAMETER_V1,
.cc_dfp_mode = CC_MODE_DFP_1_5,
.cc1_param = { .rp_4p7k_code = 0xe,
.rp_36k_code = 0x3,
.rp_12k_code = 0xe,
.rd_code = 0xf,
.ra_code = 0x6,
.vref_2p6v = 0x7,
.vref_1p23v = 0x7,
.vref_0p8v = 0x8,
.vref_0p66v = 0x7,
.vref_0p4v = 0x7,
.vref_0p2v = 0x7,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.cc2_param = { .rp_4p7k_code = 0xe,
.rp_36k_code = 0x3,
.rp_12k_code = 0xe,
.rd_code = 0xf,
.ra_code = 0x6,
.vref_2p6v = 0x7,
.vref_1p23v = 0x7,
.vref_0p8v = 0x8,
.vref_0p66v = 0x7,
.vref_0p4v = 0x7,
.vref_0p2v = 0x8,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.debounce_val = 0x7f, /* 1b,1us 7f,4.7us */
.use_defalut_parameter = false,
};
static const struct type_c_cfg rtd1315e_type_c_cfg = {
.parameter_ver = PARAMETER_V1,
.cc_dfp_mode = CC_MODE_DFP_1_5,
.cc1_param = { .rp_4p7k_code = 0xe,
.rp_36k_code = 0x3,
.rp_12k_code = 0xe,
.rd_code = 0xf,
.ra_code = 0x6,
.vref_2p6v = 0x7,
.vref_1p23v = 0x7,
.vref_0p8v = 0x8,
.vref_0p66v = 0x7,
.vref_0p4v = 0x7,
.vref_0p2v = 0x7,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.cc2_param = { .rp_4p7k_code = 0xe,
.rp_36k_code = 0x3,
.rp_12k_code = 0xe,
.rd_code = 0xf,
.ra_code = 0x6,
.vref_2p6v = 0x7,
.vref_1p23v = 0x7,
.vref_0p8v = 0x8,
.vref_0p66v = 0x7,
.vref_0p4v = 0x7,
.vref_0p2v = 0x8,
.vref_1_1p6v = 0x7,
.vref_0_1p6v = 0x7 },
.debounce_val = 0x7f, /* 1b,1us 7f,4.7us */
.use_defalut_parameter = false,
};
static const struct of_device_id extcon_rtk_type_c_match[] = {
{ .compatible = "realtek,rtd1295-type-c", .data = &rtd1295_type_c_cfg },
{ .compatible = "realtek,rtd1312c-type-c", .data = &rtd1312c_type_c_cfg },
{ .compatible = "realtek,rtd1315e-type-c", .data = &rtd1315e_type_c_cfg },
{ .compatible = "realtek,rtd1319-type-c", .data = &rtd1319_type_c_cfg },
{ .compatible = "realtek,rtd1319d-type-c", .data = &rtd1319d_type_c_cfg },
{ .compatible = "realtek,rtd1395-type-c", .data = &rtd1395_type_c_cfg },
{ .compatible = "realtek,rtd1619-type-c", .data = &rtd1619_type_c_cfg },
{ .compatible = "realtek,rtd1619b-type-c", .data = &rtd1619b_type_c_cfg },
{},
};
MODULE_DEVICE_TABLE(of, extcon_rtk_type_c_match);
#ifdef CONFIG_PM_SLEEP
static int extcon_rtk_type_c_prepare(struct device *dev)
{
struct type_c_data *type_c = dev_get_drvdata(dev);
u32 default_ctrl;
unsigned long flags;
cancel_delayed_work_sync(&type_c->delayed_work);
flush_delayed_work(&type_c->delayed_work);
WARN_ON_ONCE(delayed_work_pending(&type_c->delayed_work));
spin_lock_irqsave(&type_c->lock, flags);
/* disable interrupt */
default_ctrl = readl(type_c->reg_base + USB_TYPEC_CTRL) &
DEBOUNCE_TIME_MASK;
writel(default_ctrl, type_c->reg_base + USB_TYPEC_CTRL);
/* disable cc detect, rp, rd */
writel(PLR_EN, type_c->reg_base + USB_TYPEC_CTRL_CC1_0);
writel(0, type_c->reg_base + USB_TYPEC_CTRL_CC2_0);
spin_unlock_irqrestore(&type_c->lock, flags);
return 0;
}
static void extcon_rtk_type_c_complete(struct device *dev)
{
/* nothing */
}
static int extcon_rtk_type_c_suspend(struct device *dev)
{
/* nothing */
return 0;
}
static int extcon_rtk_type_c_resume(struct device *dev)
{
struct type_c_data *type_c = dev_get_drvdata(dev);
int ret;
ret = extcon_rtk_type_c_init(type_c);
if (ret) {
dev_err(dev, "%s failed to init type_c\n", __func__);
return ret;
}
return 0;
}
static const struct dev_pm_ops extcon_rtk_type_c_pm_ops = {
SET_LATE_SYSTEM_SLEEP_PM_OPS(extcon_rtk_type_c_suspend, extcon_rtk_type_c_resume)
.prepare = extcon_rtk_type_c_prepare,
.complete = extcon_rtk_type_c_complete,
};
#define DEV_PM_OPS (&extcon_rtk_type_c_pm_ops)
#else
#define DEV_PM_OPS NULL
#endif /* CONFIG_PM_SLEEP */
static struct platform_driver extcon_rtk_type_c_driver = {
.probe = extcon_rtk_type_c_probe,
.remove = extcon_rtk_type_c_remove,
.driver = {
.name = "extcon-rtk-type_c",
.of_match_table = extcon_rtk_type_c_match,
.pm = DEV_PM_OPS,
},
};
module_platform_driver(extcon_rtk_type_c_driver);
MODULE_DESCRIPTION("Realtek Extcon Type C driver");
MODULE_AUTHOR("Stanley Chang <stanley_chang@realtek.com>");
MODULE_LICENSE("GPL");
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