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Commit d61b814a authored by Chanwoo Choi's avatar Chanwoo Choi
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Merge branch 'ib-extcon-mfd-4.16' into extcon-next

parents 447641eb 9bf317e9
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Showing with 159 additions and 44 deletions
drivers/extcon/extcon-axp288.c
View file @ d61b814a
......@@ -24,8 +24,6 @@
#include <linux/notifier.h>
#include <linux/extcon-provider.h>
#include <linux/regmap.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/mfd/axp20x.h>
/* Power source status register */
......@@ -79,11 +77,6 @@ enum axp288_extcon_reg {
AXP288_BC_DET_STAT_REG = 0x2f,
};
enum axp288_mux_select {
EXTCON_GPIO_MUX_SEL_PMIC = 0,
EXTCON_GPIO_MUX_SEL_SOC,
};
enum axp288_extcon_irq {
VBUS_FALLING_IRQ = 0,
VBUS_RISING_IRQ,
......@@ -104,10 +97,8 @@ struct axp288_extcon_info {
struct device *dev;
struct regmap *regmap;
struct regmap_irq_chip_data *regmap_irqc;
struct gpio_desc *gpio_mux_cntl;
int irq[EXTCON_IRQ_END];
struct extcon_dev *edev;
struct notifier_block extcon_nb;
unsigned int previous_cable;
};
......@@ -197,15 +188,6 @@ static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
}
no_vbus:
/*
* If VBUS is absent Connect D+/D- lines to PMIC for BC
* detection. Else connect them to SOC for USB communication.
*/
if (info->gpio_mux_cntl)
gpiod_set_value(info->gpio_mux_cntl,
vbus_attach ? EXTCON_GPIO_MUX_SEL_SOC
: EXTCON_GPIO_MUX_SEL_PMIC);
extcon_set_state_sync(info->edev, info->previous_cable, false);
if (info->previous_cable == EXTCON_CHG_USB_SDP)
extcon_set_state_sync(info->edev, EXTCON_USB, false);
......@@ -253,8 +235,7 @@ static int axp288_extcon_probe(struct platform_device *pdev)
{
struct axp288_extcon_info *info;
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
struct axp288_extcon_pdata *pdata = pdev->dev.platform_data;
int ret, i, pirq, gpio;
int ret, i, pirq;
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (!info)
......@@ -264,8 +245,6 @@ static int axp288_extcon_probe(struct platform_device *pdev)
info->regmap = axp20x->regmap;
info->regmap_irqc = axp20x->regmap_irqc;
info->previous_cable = EXTCON_NONE;
if (pdata)
info->gpio_mux_cntl = pdata->gpio_mux_cntl;
platform_set_drvdata(pdev, info);
......@@ -286,21 +265,11 @@ static int axp288_extcon_probe(struct platform_device *pdev)
return ret;
}
/* Set up gpio control for USB Mux */
if (info->gpio_mux_cntl) {
gpio = desc_to_gpio(info->gpio_mux_cntl);
ret = devm_gpio_request(&pdev->dev, gpio, "USB_MUX");
if (ret < 0) {
dev_err(&pdev->dev,
"failed to request the gpio=%d\n", gpio);
return ret;
}
gpiod_direction_output(info->gpio_mux_cntl,
EXTCON_GPIO_MUX_SEL_PMIC);
}
for (i = 0; i < EXTCON_IRQ_END; i++) {
pirq = platform_get_irq(pdev, i);
if (pirq < 0)
return pirq;
info->irq[i] = regmap_irq_get_virq(info->regmap_irqc, pirq);
if (info->irq[i] < 0) {
dev_err(&pdev->dev,
......
drivers/extcon/extcon-usbc-cros-ec.c
View file @ d61b814a
......@@ -34,16 +34,26 @@ struct cros_ec_extcon_info {
struct notifier_block notifier;
unsigned int dr; /* data role */
bool pr; /* power role (true if VBUS enabled) */
bool dp; /* DisplayPort enabled */
bool mux; /* SuperSpeed (usb3) enabled */
unsigned int power_type;
};
static const unsigned int usb_type_c_cable[] = {
EXTCON_USB,
EXTCON_USB_HOST,
EXTCON_DISP_DP,
EXTCON_NONE,
};
enum usb_data_roles {
DR_NONE,
DR_HOST,
DR_DEVICE,
};
/**
* cros_ec_pd_command() - Send a command to the EC.
* @info: pointer to struct cros_ec_extcon_info
......@@ -150,6 +160,7 @@ static int cros_ec_usb_get_role(struct cros_ec_extcon_info *info,
pd_control.port = info->port_id;
pd_control.role = USB_PD_CTRL_ROLE_NO_CHANGE;
pd_control.mux = USB_PD_CTRL_MUX_NO_CHANGE;
pd_control.swap = USB_PD_CTRL_SWAP_NONE;
ret = cros_ec_pd_command(info, EC_CMD_USB_PD_CONTROL, 1,
&pd_control, sizeof(pd_control),
&resp, sizeof(resp));
......@@ -183,11 +194,72 @@ static int cros_ec_pd_get_num_ports(struct cros_ec_extcon_info *info)
return resp.num_ports;
}
static const char *cros_ec_usb_role_string(unsigned int role)
{
return role == DR_NONE ? "DISCONNECTED" :
(role == DR_HOST ? "DFP" : "UFP");
}
static const char *cros_ec_usb_power_type_string(unsigned int type)
{
switch (type) {
case USB_CHG_TYPE_NONE:
return "USB_CHG_TYPE_NONE";
case USB_CHG_TYPE_PD:
return "USB_CHG_TYPE_PD";
case USB_CHG_TYPE_PROPRIETARY:
return "USB_CHG_TYPE_PROPRIETARY";
case USB_CHG_TYPE_C:
return "USB_CHG_TYPE_C";
case USB_CHG_TYPE_BC12_DCP:
return "USB_CHG_TYPE_BC12_DCP";
case USB_CHG_TYPE_BC12_CDP:
return "USB_CHG_TYPE_BC12_CDP";
case USB_CHG_TYPE_BC12_SDP:
return "USB_CHG_TYPE_BC12_SDP";
case USB_CHG_TYPE_OTHER:
return "USB_CHG_TYPE_OTHER";
case USB_CHG_TYPE_VBUS:
return "USB_CHG_TYPE_VBUS";
case USB_CHG_TYPE_UNKNOWN:
return "USB_CHG_TYPE_UNKNOWN";
default:
return "USB_CHG_TYPE_UNKNOWN";
}
}
static bool cros_ec_usb_power_type_is_wall_wart(unsigned int type,
unsigned int role)
{
switch (type) {
/* FIXME : Guppy, Donnettes, and other chargers will be miscategorized
* because they identify with USB_CHG_TYPE_C, but we can't return true
* here from that code because that breaks Suzy-Q and other kinds of
* USB Type-C cables and peripherals.
*/
case USB_CHG_TYPE_PROPRIETARY:
case USB_CHG_TYPE_BC12_DCP:
return true;
case USB_CHG_TYPE_PD:
case USB_CHG_TYPE_C:
case USB_CHG_TYPE_BC12_CDP:
case USB_CHG_TYPE_BC12_SDP:
case USB_CHG_TYPE_OTHER:
case USB_CHG_TYPE_VBUS:
case USB_CHG_TYPE_UNKNOWN:
case USB_CHG_TYPE_NONE:
default:
return false;
}
}
static int extcon_cros_ec_detect_cable(struct cros_ec_extcon_info *info,
bool force)
{
struct device *dev = info->dev;
int role, power_type;
unsigned int dr = DR_NONE;
bool pr = false;
bool polarity = false;
bool dp = false;
bool mux = false;
......@@ -206,9 +278,12 @@ static int extcon_cros_ec_detect_cable(struct cros_ec_extcon_info *info,
dev_err(dev, "failed getting role err = %d\n", role);
return role;
}
dev_dbg(dev, "disconnected\n");
} else {
int pd_mux_state;
dr = (role & PD_CTRL_RESP_ROLE_DATA) ? DR_HOST : DR_DEVICE;
pr = (role & PD_CTRL_RESP_ROLE_POWER);
pd_mux_state = cros_ec_usb_get_pd_mux_state(info);
if (pd_mux_state < 0)
pd_mux_state = USB_PD_MUX_USB_ENABLED;
......@@ -216,20 +291,62 @@ static int extcon_cros_ec_detect_cable(struct cros_ec_extcon_info *info,
dp = pd_mux_state & USB_PD_MUX_DP_ENABLED;
mux = pd_mux_state & USB_PD_MUX_USB_ENABLED;
hpd = pd_mux_state & USB_PD_MUX_HPD_IRQ;
}
if (force || info->dp != dp || info->mux != mux ||
info->power_type != power_type) {
dev_dbg(dev,
"connected role 0x%x pwr type %d dr %d pr %d pol %d mux %d dp %d hpd %d\n",
role, power_type, dr, pr, polarity, mux, dp, hpd);
}
/*
* When there is no USB host (e.g. USB PD charger),
* we are not really a UFP for the AP.
*/
if (dr == DR_DEVICE &&
cros_ec_usb_power_type_is_wall_wart(power_type, role))
dr = DR_NONE;
if (force || info->dr != dr || info->pr != pr || info->dp != dp ||
info->mux != mux || info->power_type != power_type) {
bool host_connected = false, device_connected = false;
dev_dbg(dev, "Type/Role switch! type = %s role = %s\n",
cros_ec_usb_power_type_string(power_type),
cros_ec_usb_role_string(dr));
info->dr = dr;
info->pr = pr;
info->dp = dp;
info->mux = mux;
info->power_type = power_type;
extcon_set_state(info->edev, EXTCON_DISP_DP, dp);
if (dr == DR_DEVICE)
device_connected = true;
else if (dr == DR_HOST)
host_connected = true;
extcon_set_state(info->edev, EXTCON_USB, device_connected);
extcon_set_state(info->edev, EXTCON_USB_HOST, host_connected);
extcon_set_state(info->edev, EXTCON_DISP_DP, dp);
extcon_set_property(info->edev, EXTCON_USB,
EXTCON_PROP_USB_VBUS,
(union extcon_property_value)(int)pr);
extcon_set_property(info->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_VBUS,
(union extcon_property_value)(int)pr);
extcon_set_property(info->edev, EXTCON_USB,
EXTCON_PROP_USB_TYPEC_POLARITY,
(union extcon_property_value)(int)polarity);
extcon_set_property(info->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_TYPEC_POLARITY,
(union extcon_property_value)(int)polarity);
extcon_set_property(info->edev, EXTCON_DISP_DP,
EXTCON_PROP_USB_TYPEC_POLARITY,
(union extcon_property_value)(int)polarity);
extcon_set_property(info->edev, EXTCON_USB,
EXTCON_PROP_USB_SS,
(union extcon_property_value)(int)mux);
extcon_set_property(info->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_SS,
(union extcon_property_value)(int)mux);
extcon_set_property(info->edev, EXTCON_DISP_DP,
EXTCON_PROP_USB_SS,
(union extcon_property_value)(int)mux);
......@@ -237,6 +354,8 @@ static int extcon_cros_ec_detect_cable(struct cros_ec_extcon_info *info,
EXTCON_PROP_DISP_HPD,
(union extcon_property_value)(int)hpd);
extcon_sync(info->edev, EXTCON_USB);
extcon_sync(info->edev, EXTCON_USB_HOST);
extcon_sync(info->edev, EXTCON_DISP_DP);
} else if (hpd) {
......@@ -322,13 +441,28 @@ static int extcon_cros_ec_probe(struct platform_device *pdev)
return ret;
}
extcon_set_property_capability(info->edev, EXTCON_USB,
EXTCON_PROP_USB_VBUS);
extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_VBUS);
extcon_set_property_capability(info->edev, EXTCON_USB,
EXTCON_PROP_USB_TYPEC_POLARITY);
extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_TYPEC_POLARITY);
extcon_set_property_capability(info->edev, EXTCON_DISP_DP,
EXTCON_PROP_USB_TYPEC_POLARITY);
extcon_set_property_capability(info->edev, EXTCON_USB,
EXTCON_PROP_USB_SS);
extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
EXTCON_PROP_USB_SS);
extcon_set_property_capability(info->edev, EXTCON_DISP_DP,
EXTCON_PROP_USB_SS);
extcon_set_property_capability(info->edev, EXTCON_DISP_DP,
EXTCON_PROP_DISP_HPD);
info->dr = DR_NONE;
info->pr = false;
platform_set_drvdata(pdev, info);
/* Get PD events from the EC */
......
include/linux/mfd/axp20x.h
View file @ d61b814a
......@@ -645,11 +645,6 @@ struct axp20x_dev {
const struct regmap_irq_chip *regmap_irq_chip;
};
struct axp288_extcon_pdata {
/* GPIO pin control to switch D+/D- lines b/w PMIC and SOC */
struct gpio_desc *gpio_mux_cntl;
};
/* generic helper function for reading 9-16 bit wide regs */
static inline int axp20x_read_variable_width(struct regmap *regmap,
unsigned int reg, unsigned int width)
......
include/linux/mfd/cros_ec_commands.h
View file @ d61b814a
......@@ -2904,16 +2904,33 @@ enum usb_pd_control_mux {
USB_PD_CTRL_MUX_AUTO = 5,
};
enum usb_pd_control_swap {
USB_PD_CTRL_SWAP_NONE = 0,
USB_PD_CTRL_SWAP_DATA = 1,
USB_PD_CTRL_SWAP_POWER = 2,
USB_PD_CTRL_SWAP_VCONN = 3,
USB_PD_CTRL_SWAP_COUNT
};
struct ec_params_usb_pd_control {
uint8_t port;
uint8_t role;
uint8_t mux;
uint8_t swap;
} __packed;
#define PD_CTRL_RESP_ENABLED_COMMS (1 << 0) /* Communication enabled */
#define PD_CTRL_RESP_ENABLED_CONNECTED (1 << 1) /* Device connected */
#define PD_CTRL_RESP_ENABLED_PD_CAPABLE (1 << 2) /* Partner is PD capable */
#define PD_CTRL_RESP_ROLE_POWER BIT(0) /* 0=SNK/1=SRC */
#define PD_CTRL_RESP_ROLE_DATA BIT(1) /* 0=UFP/1=DFP */
#define PD_CTRL_RESP_ROLE_VCONN BIT(2) /* Vconn status */
#define PD_CTRL_RESP_ROLE_DR_POWER BIT(3) /* Partner is dualrole power */
#define PD_CTRL_RESP_ROLE_DR_DATA BIT(4) /* Partner is dualrole data */
#define PD_CTRL_RESP_ROLE_USB_COMM BIT(5) /* Partner USB comm capable */
#define PD_CTRL_RESP_ROLE_EXT_POWERED BIT(6) /* Partner externally powerd */
struct ec_response_usb_pd_control_v1 {
uint8_t enabled;
uint8_t role;
......
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