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-rw-r--r--drivers/extcon/Kconfig10
-rw-r--r--drivers/extcon/Makefile1
-rw-r--r--drivers/extcon/devres.c2
-rw-r--r--drivers/extcon/extcon-adc-jack.c2
-rw-r--r--drivers/extcon/extcon-arizona.c20
-rw-r--r--drivers/extcon/extcon-axp288.c110
-rw-r--r--drivers/extcon/extcon-intel-int3496.c179
-rw-r--r--drivers/extcon/extcon-max14577.c6
-rw-r--r--drivers/extcon/extcon-max77693.c12
-rw-r--r--drivers/extcon/extcon-max77843.c24
-rw-r--r--drivers/extcon/extcon-palmas.c21
-rw-r--r--drivers/extcon/extcon-rt8973a.c6
-rw-r--r--drivers/extcon/extcon-sm5502.c6
-rw-r--r--drivers/extcon/extcon-usb-gpio.c7
-rw-r--r--drivers/extcon/extcon.c45
-rw-r--r--drivers/extcon/extcon.h62
16 files changed, 378 insertions, 135 deletions
diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index 04788d92ea52..96bbae579c0b 100644
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -42,6 +42,16 @@ config EXTCON_GPIO
Say Y here to enable GPIO based extcon support. Note that GPIO
extcon supports single state per extcon instance.
+config EXTCON_INTEL_INT3496
+ tristate "Intel INT3496 ACPI device extcon driver"
+ depends on GPIOLIB && ACPI
+ help
+ Say Y here to enable extcon support for USB OTG ports controlled by
+ an Intel INT3496 ACPI device.
+
+ This ACPI device is typically found on Intel Baytrail or Cherrytrail
+ based tablets, or other Baytrail / Cherrytrail devices.
+
config EXTCON_MAX14577
tristate "Maxim MAX14577/77836 EXTCON Support"
depends on MFD_MAX14577
diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile
index 31a0a999c4fb..237ac3f953c2 100644
--- a/drivers/extcon/Makefile
+++ b/drivers/extcon/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_EXTCON_ADC_JACK) += extcon-adc-jack.o
obj-$(CONFIG_EXTCON_ARIZONA) += extcon-arizona.o
obj-$(CONFIG_EXTCON_AXP288) += extcon-axp288.o
obj-$(CONFIG_EXTCON_GPIO) += extcon-gpio.o
+obj-$(CONFIG_EXTCON_INTEL_INT3496) += extcon-intel-int3496.o
obj-$(CONFIG_EXTCON_MAX14577) += extcon-max14577.o
obj-$(CONFIG_EXTCON_MAX3355) += extcon-max3355.o
obj-$(CONFIG_EXTCON_MAX77693) += extcon-max77693.o
diff --git a/drivers/extcon/devres.c b/drivers/extcon/devres.c
index e686acd1c459..b40eb1805927 100644
--- a/drivers/extcon/devres.c
+++ b/drivers/extcon/devres.c
@@ -14,7 +14,7 @@
* GNU General Public License for more details.
*/
-#include <linux/extcon.h>
+#include "extcon.h"
static int devm_extcon_dev_match(struct device *dev, void *res, void *data)
{
diff --git a/drivers/extcon/extcon-adc-jack.c b/drivers/extcon/extcon-adc-jack.c
index bc538708c753..6f6537ab0a79 100644
--- a/drivers/extcon/extcon-adc-jack.c
+++ b/drivers/extcon/extcon-adc-jack.c
@@ -67,7 +67,7 @@ static void adc_jack_handler(struct work_struct *work)
ret = iio_read_channel_raw(data->chan, &adc_val);
if (ret < 0) {
- dev_err(&data->edev->dev, "read channel() error: %d\n", ret);
+ dev_err(data->dev, "read channel() error: %d\n", ret);
return;
}
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index d836d4ce5ee4..ed78b7c26627 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -236,12 +236,8 @@ static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
mode %= info->micd_num_modes;
- if (arizona->pdata.micd_pol_gpio > 0)
- gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
- info->micd_modes[mode].gpio);
- else
- gpiod_set_value_cansleep(info->micd_pol_gpio,
- info->micd_modes[mode].gpio);
+ gpiod_set_value_cansleep(info->micd_pol_gpio,
+ info->micd_modes[mode].gpio);
regmap_update_bits(arizona->regmap, ARIZONA_MIC_DETECT_1,
ARIZONA_MICD_BIAS_SRC_MASK,
@@ -1412,21 +1408,21 @@ static int arizona_extcon_probe(struct platform_device *pdev)
regmap_update_bits(arizona->regmap, ARIZONA_GP_SWITCH_1,
ARIZONA_SW1_MODE_MASK, arizona->pdata.gpsw);
- if (arizona->pdata.micd_pol_gpio > 0) {
+ if (pdata->micd_pol_gpio > 0) {
if (info->micd_modes[0].gpio)
mode = GPIOF_OUT_INIT_HIGH;
else
mode = GPIOF_OUT_INIT_LOW;
- ret = devm_gpio_request_one(&pdev->dev,
- arizona->pdata.micd_pol_gpio,
- mode,
- "MICD polarity");
+ ret = devm_gpio_request_one(&pdev->dev, pdata->micd_pol_gpio,
+ mode, "MICD polarity");
if (ret != 0) {
dev_err(arizona->dev, "Failed to request GPIO%d: %d\n",
- arizona->pdata.micd_pol_gpio, ret);
+ pdata->micd_pol_gpio, ret);
goto err_register;
}
+
+ info->micd_pol_gpio = gpio_to_desc(pdata->micd_pol_gpio);
} else {
if (info->micd_modes[0].gpio)
mode = GPIOD_OUT_HIGH;
diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c
index 42f41e808292..f4fd03e58e37 100644
--- a/drivers/extcon/extcon-axp288.c
+++ b/drivers/extcon/extcon-axp288.c
@@ -21,7 +21,6 @@
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/property.h>
-#include <linux/usb/phy.h>
#include <linux/notifier.h>
#include <linux/extcon.h>
#include <linux/regmap.h>
@@ -71,12 +70,6 @@
#define DET_STAT_CDP 2
#define DET_STAT_DCP 3
-/* IRQ enable-1 register */
-#define PWRSRC_IRQ_CFG_MASK (BIT(4)|BIT(3)|BIT(2))
-
-/* IRQ enable-6 register */
-#define BC12_IRQ_CFG_MASK BIT(1)
-
enum axp288_extcon_reg {
AXP288_PS_STAT_REG = 0x00,
AXP288_PS_BOOT_REASON_REG = 0x02,
@@ -84,8 +77,6 @@ enum axp288_extcon_reg {
AXP288_BC_VBUS_CNTL_REG = 0x2d,
AXP288_BC_USB_STAT_REG = 0x2e,
AXP288_BC_DET_STAT_REG = 0x2f,
- AXP288_PWRSRC_IRQ_CFG_REG = 0x40,
- AXP288_BC12_IRQ_CFG_REG = 0x45,
};
enum axp288_mux_select {
@@ -105,6 +96,7 @@ static const unsigned int axp288_extcon_cables[] = {
EXTCON_CHG_USB_SDP,
EXTCON_CHG_USB_CDP,
EXTCON_CHG_USB_DCP,
+ EXTCON_USB,
EXTCON_NONE,
};
@@ -112,11 +104,11 @@ struct axp288_extcon_info {
struct device *dev;
struct regmap *regmap;
struct regmap_irq_chip_data *regmap_irqc;
- struct axp288_extcon_pdata *pdata;
+ struct gpio_desc *gpio_mux_cntl;
int irq[EXTCON_IRQ_END];
struct extcon_dev *edev;
struct notifier_block extcon_nb;
- struct usb_phy *otg;
+ unsigned int previous_cable;
};
/* Power up/down reason string array */
@@ -156,10 +148,9 @@ static void axp288_extcon_log_rsi(struct axp288_extcon_info *info)
static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
{
- static bool notify_otg, notify_charger;
- static unsigned int cable;
int ret, stat, cfg, pwr_stat;
u8 chrg_type;
+ unsigned int cable = info->previous_cable;
bool vbus_attach = false;
ret = regmap_read(info->regmap, AXP288_PS_STAT_REG, &pwr_stat);
@@ -168,9 +159,9 @@ static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
return ret;
}
- vbus_attach = (pwr_stat & PS_STAT_VBUS_PRESENT);
+ vbus_attach = (pwr_stat & PS_STAT_VBUS_VALID);
if (!vbus_attach)
- goto notify_otg;
+ goto no_vbus;
/* Check charger detection completion status */
ret = regmap_read(info->regmap, AXP288_BC_GLOBAL_REG, &cfg);
@@ -190,19 +181,14 @@ static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
switch (chrg_type) {
case DET_STAT_SDP:
dev_dbg(info->dev, "sdp cable is connected\n");
- notify_otg = true;
- notify_charger = true;
cable = EXTCON_CHG_USB_SDP;
break;
case DET_STAT_CDP:
dev_dbg(info->dev, "cdp cable is connected\n");
- notify_otg = true;
- notify_charger = true;
cable = EXTCON_CHG_USB_CDP;
break;
case DET_STAT_DCP:
dev_dbg(info->dev, "dcp cable is connected\n");
- notify_charger = true;
cable = EXTCON_CHG_USB_DCP;
break;
default:
@@ -210,27 +196,28 @@ static int axp288_handle_chrg_det_event(struct axp288_extcon_info *info)
"disconnect or unknown or ID event\n");
}
-notify_otg:
- if (notify_otg) {
- /*
- * If VBUS is absent Connect D+/D- lines to PMIC for BC
- * detection. Else connect them to SOC for USB communication.
- */
- if (info->pdata->gpio_mux_cntl)
- gpiod_set_value(info->pdata->gpio_mux_cntl,
- vbus_attach ? EXTCON_GPIO_MUX_SEL_SOC
- : EXTCON_GPIO_MUX_SEL_PMIC);
-
- atomic_notifier_call_chain(&info->otg->notifier,
- vbus_attach ? USB_EVENT_VBUS : USB_EVENT_NONE, NULL);
- }
-
- if (notify_charger)
+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);
+
+ if (vbus_attach) {
extcon_set_state_sync(info->edev, cable, vbus_attach);
+ if (cable == EXTCON_CHG_USB_SDP)
+ extcon_set_state_sync(info->edev, EXTCON_USB,
+ vbus_attach);
- /* Clear the flags on disconnect event */
- if (!vbus_attach)
- notify_otg = notify_charger = false;
+ info->previous_cable = cable;
+ }
return 0;
@@ -253,15 +240,10 @@ static irqreturn_t axp288_extcon_isr(int irq, void *data)
return IRQ_HANDLED;
}
-static void axp288_extcon_enable_irq(struct axp288_extcon_info *info)
+static void axp288_extcon_enable(struct axp288_extcon_info *info)
{
- /* Unmask VBUS interrupt */
- regmap_write(info->regmap, AXP288_PWRSRC_IRQ_CFG_REG,
- PWRSRC_IRQ_CFG_MASK);
regmap_update_bits(info->regmap, AXP288_BC_GLOBAL_REG,
BC_GLOBAL_RUN, 0);
- /* Unmask the BC1.2 complete interrupts */
- regmap_write(info->regmap, AXP288_BC12_IRQ_CFG_REG, BC12_IRQ_CFG_MASK);
/* Enable the charger detection logic */
regmap_update_bits(info->regmap, AXP288_BC_GLOBAL_REG,
BC_GLOBAL_RUN, BC_GLOBAL_RUN);
@@ -271,6 +253,7 @@ 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;
info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
@@ -280,15 +263,10 @@ static int axp288_extcon_probe(struct platform_device *pdev)
info->dev = &pdev->dev;
info->regmap = axp20x->regmap;
info->regmap_irqc = axp20x->regmap_irqc;
- info->pdata = pdev->dev.platform_data;
-
- if (!info->pdata) {
- /* Try ACPI provided pdata via device properties */
- if (!device_property_present(&pdev->dev,
- "axp288_extcon_data\n"))
- dev_err(&pdev->dev, "failed to get platform data\n");
- return -ENODEV;
- }
+ info->previous_cable = EXTCON_NONE;
+ if (pdata)
+ info->gpio_mux_cntl = pdata->gpio_mux_cntl;
+
platform_set_drvdata(pdev, info);
axp288_extcon_log_rsi(info);
@@ -308,23 +286,16 @@ static int axp288_extcon_probe(struct platform_device *pdev)
return ret;
}
- /* Get otg transceiver phy */
- info->otg = devm_usb_get_phy(&pdev->dev, USB_PHY_TYPE_USB2);
- if (IS_ERR(info->otg)) {
- dev_err(&pdev->dev, "failed to get otg transceiver\n");
- return PTR_ERR(info->otg);
- }
-
/* Set up gpio control for USB Mux */
- if (info->pdata->gpio_mux_cntl) {
- gpio = desc_to_gpio(info->pdata->gpio_mux_cntl);
+ 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->pdata->gpio_mux_cntl,
+ gpiod_direction_output(info->gpio_mux_cntl,
EXTCON_GPIO_MUX_SEL_PMIC);
}
@@ -349,14 +320,21 @@ static int axp288_extcon_probe(struct platform_device *pdev)
}
}
- /* Enable interrupts */
- axp288_extcon_enable_irq(info);
+ /* Start charger cable type detection */
+ axp288_extcon_enable(info);
return 0;
}
+static const struct platform_device_id axp288_extcon_table[] = {
+ { .name = "axp288_extcon" },
+ {},
+};
+MODULE_DEVICE_TABLE(platform, axp288_extcon_table);
+
static struct platform_driver axp288_extcon_driver = {
.probe = axp288_extcon_probe,
+ .id_table = axp288_extcon_table,
.driver = {
.name = "axp288_extcon",
},
diff --git a/drivers/extcon/extcon-intel-int3496.c b/drivers/extcon/extcon-intel-int3496.c
new file mode 100644
index 000000000000..a3131b036de6
--- /dev/null
+++ b/drivers/extcon/extcon-intel-int3496.c
@@ -0,0 +1,179 @@
+/*
+ * Intel INT3496 ACPI device extcon driver
+ *
+ * Copyright (c) 2016 Hans de Goede <hdegoede@redhat.com>
+ *
+ * Based on android x86 kernel code which is:
+ *
+ * Copyright (c) 2014, Intel Corporation.
+ * Author: David Cohen <david.a.cohen@linux.intel.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/acpi.h>
+#include <linux/extcon.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#define INT3496_GPIO_USB_ID 0
+#define INT3496_GPIO_VBUS_EN 1
+#define INT3496_GPIO_USB_MUX 2
+#define DEBOUNCE_TIME msecs_to_jiffies(50)
+
+struct int3496_data {
+ struct device *dev;
+ struct extcon_dev *edev;
+ struct delayed_work work;
+ struct gpio_desc *gpio_usb_id;
+ struct gpio_desc *gpio_vbus_en;
+ struct gpio_desc *gpio_usb_mux;
+ int usb_id_irq;
+};
+
+static const unsigned int int3496_cable[] = {
+ EXTCON_USB_HOST,
+ EXTCON_NONE,
+};
+
+static void int3496_do_usb_id(struct work_struct *work)
+{
+ struct int3496_data *data =
+ container_of(work, struct int3496_data, work.work);
+ int id = gpiod_get_value_cansleep(data->gpio_usb_id);
+
+ /* id == 1: PERIPHERAL, id == 0: HOST */
+ dev_dbg(data->dev, "Connected %s cable\n", id ? "PERIPHERAL" : "HOST");
+
+ /*
+ * Peripheral: set USB mux to peripheral and disable VBUS
+ * Host: set USB mux to host and enable VBUS
+ */
+ if (!IS_ERR(data->gpio_usb_mux))
+ gpiod_direction_output(data->gpio_usb_mux, id);
+
+ if (!IS_ERR(data->gpio_vbus_en))
+ gpiod_direction_output(data->gpio_vbus_en, !id);
+
+ extcon_set_state_sync(data->edev, EXTCON_USB_HOST, !id);
+}
+
+static irqreturn_t int3496_thread_isr(int irq, void *priv)
+{
+ struct int3496_data *data = priv;
+
+ /* Let the pin settle before processing it */
+ mod_delayed_work(system_wq, &data->work, DEBOUNCE_TIME);
+
+ return IRQ_HANDLED;
+}
+
+static int int3496_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct int3496_data *data;
+ int ret;
+
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->dev = dev;
+ INIT_DELAYED_WORK(&data->work, int3496_do_usb_id);
+
+ data->gpio_usb_id = devm_gpiod_get_index(dev, "id",
+ INT3496_GPIO_USB_ID,
+ GPIOD_IN);
+ if (IS_ERR(data->gpio_usb_id)) {
+ ret = PTR_ERR(data->gpio_usb_id);
+ dev_err(dev, "can't request USB ID GPIO: %d\n", ret);
+ return ret;
+ }
+
+ data->usb_id_irq = gpiod_to_irq(data->gpio_usb_id);
+ if (data->usb_id_irq <= 0) {
+ dev_err(dev, "can't get USB ID IRQ: %d\n", data->usb_id_irq);
+ return -EINVAL;
+ }
+
+ data->gpio_vbus_en = devm_gpiod_get_index(dev, "vbus en",
+ INT3496_GPIO_VBUS_EN,
+ GPIOD_ASIS);
+ if (IS_ERR(data->gpio_vbus_en))
+ dev_info(dev, "can't request VBUS EN GPIO\n");
+
+ data->gpio_usb_mux = devm_gpiod_get_index(dev, "usb mux",
+ INT3496_GPIO_USB_MUX,
+ GPIOD_ASIS);
+ if (IS_ERR(data->gpio_usb_mux))
+ dev_info(dev, "can't request USB MUX GPIO\n");
+
+ /* register extcon device */
+ data->edev = devm_extcon_dev_allocate(dev, int3496_cable);
+ if (IS_ERR(data->edev))
+ return -ENOMEM;
+
+ ret = devm_extcon_dev_register(dev, data->edev);
+ if (ret < 0) {
+ dev_err(dev, "can't register extcon device: %d\n", ret);
+ return ret;
+ }
+
+ ret = devm_request_threaded_irq(dev, data->usb_id_irq,
+ NULL, int3496_thread_isr,
+ IRQF_SHARED | IRQF_ONESHOT |
+ IRQF_TRIGGER_RISING |
+ IRQF_TRIGGER_FALLING,
+ dev_name(dev), data);
+ if (ret < 0) {
+ dev_err(dev, "can't request IRQ for USB ID GPIO: %d\n", ret);
+ return ret;
+ }
+
+ /* queue initial processing of id-pin */
+ queue_delayed_work(system_wq, &data->work, 0);
+
+ platform_set_drvdata(pdev, data);
+
+ return 0;
+}
+
+static int int3496_remove(struct platform_device *pdev)
+{
+ struct int3496_data *data = platform_get_drvdata(pdev);
+
+ devm_free_irq(&pdev->dev, data->usb_id_irq, data);
+ cancel_delayed_work_sync(&data->work);
+
+ return 0;
+}
+
+static struct acpi_device_id int3496_acpi_match[] = {
+ { "INT3496" },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, int3496_acpi_match);
+
+static struct platform_driver int3496_driver = {
+ .driver = {
+ .name = "intel-int3496",
+ .acpi_match_table = int3496_acpi_match,
+ },
+ .probe = int3496_probe,
+ .remove = int3496_remove,
+};
+
+module_platform_driver(int3496_driver);
+
+MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
+MODULE_DESCRIPTION("Intel INT3496 ACPI device extcon driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/extcon/extcon-max14577.c b/drivers/extcon/extcon-max14577.c
index 12e26c4e7763..f6414b7fa5bc 100644
--- a/drivers/extcon/extcon-max14577.c
+++ b/drivers/extcon/extcon-max14577.c
@@ -531,8 +531,10 @@ static int max14577_parse_irq(struct max14577_muic_info *info, int irq_type)
case MAX14577_IRQ_INT1_ADC:
case MAX14577_IRQ_INT1_ADCLOW:
case MAX14577_IRQ_INT1_ADCERR:
- /* Handle all of accessory except for
- type of charger accessory */
+ /*
+ * Handle all of accessory except for
+ * type of charger accessory.
+ */
info->irq_adc = true;
return 1;
case MAX14577_IRQ_INT2_CHGTYP:
diff --git a/drivers/extcon/extcon-max77693.c b/drivers/extcon/extcon-max77693.c
index 68dbcb814b2f..62163468f205 100644
--- a/drivers/extcon/extcon-max77693.c
+++ b/drivers/extcon/extcon-max77693.c
@@ -188,8 +188,10 @@ enum max77693_muic_acc_type {
MAX77693_MUIC_ADC_AUDIO_MODE_REMOTE,
MAX77693_MUIC_ADC_OPEN,
- /* The below accessories have same ADC value so ADCLow and
- ADC1K bit is used to separate specific accessory */
+ /*
+ * The below accessories have same ADC value so ADCLow and
+ * ADC1K bit is used to separate specific accessory.
+ */
/* ADC|VBVolot|ADCLow|ADC1K| */
MAX77693_MUIC_GND_USB_HOST = 0x100, /* 0x0| 0| 0| 0| */
MAX77693_MUIC_GND_USB_HOST_VB = 0x104, /* 0x0| 1| 0| 0| */
@@ -970,8 +972,10 @@ static void max77693_muic_irq_work(struct work_struct *work)
case MAX77693_MUIC_IRQ_INT1_ADC_LOW:
case MAX77693_MUIC_IRQ_INT1_ADC_ERR:
case MAX77693_MUIC_IRQ_INT1_ADC1K:
- /* Handle all of accessory except for
- type of charger accessory */
+ /*
+ * Handle all of accessory except for
+ * type of charger accessory.
+ */
ret = max77693_muic_adc_handler(info);
break;
case MAX77693_MUIC_IRQ_INT2_CHGTYP:
diff --git a/drivers/extcon/extcon-max77843.c b/drivers/extcon/extcon-max77843.c
index 5d11fdf36e94..6e722d552cf1 100644
--- a/drivers/extcon/extcon-max77843.c
+++ b/drivers/extcon/extcon-max77843.c
@@ -97,8 +97,10 @@ enum max77843_muic_accessory_type {
MAX77843_MUIC_ADC_AUDIO_DEVICE_TYPE1,
MAX77843_MUIC_ADC_OPEN,
- /* The blow accessories should check
- not only ADC value but also ADC1K and VBVolt value. */
+ /*
+ * The below accessories should check
+ * not only ADC value but also ADC1K and VBVolt value.
+ */
/* Offset|ADC1K|VBVolt| */
MAX77843_MUIC_GND_USB_HOST = 0x100, /* 0x1| 0| 0| */
MAX77843_MUIC_GND_USB_HOST_VB = 0x101, /* 0x1| 0| 1| */
@@ -265,16 +267,20 @@ static int max77843_muic_get_cable_type(struct max77843_muic_info *info,
/* Check GROUND accessory with charger cable */
if (adc == MAX77843_MUIC_ADC_GROUND) {
if (chg_type == MAX77843_MUIC_CHG_NONE) {
- /* The following state when charger cable is
+ /*
+ * The following state when charger cable is
* disconnected but the GROUND accessory still
- * connected */
+ * connected.
+ */
*attached = false;
cable_type = info->prev_chg_type;
info->prev_chg_type = MAX77843_MUIC_CHG_NONE;
} else {
- /* The following state when charger cable is
- * connected on the GROUND accessory */
+ /*
+ * The following state when charger cable is
+ * connected on the GROUND accessory.
+ */
*attached = true;
cable_type = MAX77843_MUIC_CHG_GND;
info->prev_chg_type = MAX77843_MUIC_CHG_GND;
@@ -299,11 +305,13 @@ static int max77843_muic_get_cable_type(struct max77843_muic_info *info,
} else {
*attached = true;
- /* Offset|ADC1K|VBVolt|
+ /*
+ * Offset|ADC1K|VBVolt|
* 0x1| 0| 0| USB-HOST
* 0x1| 0| 1| USB-HOST with VB
* 0x1| 1| 0| MHL
- * 0x1| 1| 1| MHL with VB */
+ * 0x1| 1| 1| MHL with VB
+ */
/* Get ADC1K register bit */
gnd_type = (info->status[MAX77843_MUIC_STATUS1] &
MAX77843_MUIC_STATUS1_ADC1K_MASK);
diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index 634ba70782de..ca904e8b3235 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -62,7 +62,7 @@ static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
if (palmas_usb->linkstat != PALMAS_USB_STATE_VBUS) {
palmas_usb->linkstat = PALMAS_USB_STATE_VBUS;
extcon_set_state_sync(edev, EXTCON_USB, true);
- dev_info(palmas_usb->dev, "USB cable is attached\n");
+ dev_dbg(palmas_usb->dev, "USB cable is attached\n");
} else {
dev_dbg(palmas_usb->dev,
"Spurious connect event detected\n");
@@ -71,7 +71,7 @@ static irqreturn_t palmas_vbus_irq_handler(int irq, void *_palmas_usb)
if (palmas_usb->linkstat == PALMAS_USB_STATE_VBUS) {
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_state_sync(edev, EXTCON_USB, false);
- dev_info(palmas_usb->dev, "USB cable is detached\n");
+ dev_dbg(palmas_usb->dev, "USB cable is detached\n");
} else {
dev_dbg(palmas_usb->dev,
"Spurious disconnect event detected\n");
@@ -99,7 +99,7 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
- dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
+ dev_dbg(palmas_usb->dev, "USB-HOST cable is attached\n");
} else if ((set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) &&
(id_src & PALMAS_USB_ID_INT_SRC_ID_FLOAT)) {
palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
@@ -107,17 +107,17 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
- dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
+ dev_dbg(palmas_usb->dev, "USB-HOST cable is detached\n");
} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_ID) &&
(!(set & PALMAS_USB_ID_INT_SRC_ID_GND))) {
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
- dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
+ dev_dbg(palmas_usb->dev, "USB-HOST cable is detached\n");
} else if ((palmas_usb->linkstat == PALMAS_USB_STATE_DISCONNECT) &&
(id_src & PALMAS_USB_ID_INT_SRC_ID_GND)) {
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
- dev_info(palmas_usb->dev, " USB-HOST cable is attached\n");
+ dev_dbg(palmas_usb->dev, " USB-HOST cable is attached\n");
}
return IRQ_HANDLED;
@@ -138,10 +138,10 @@ static void palmas_gpio_id_detect(struct work_struct *work)
if (id) {
extcon_set_state_sync(edev, EXTCON_USB_HOST, false);
- dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
+ dev_dbg(palmas_usb->dev, "USB-HOST cable is detached\n");
} else {
extcon_set_state_sync(edev, EXTCON_USB_HOST, true);
- dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
+ dev_dbg(palmas_usb->dev, "USB-HOST cable is attached\n");
}
}
@@ -190,6 +190,11 @@ static int palmas_usb_probe(struct platform_device *pdev)
struct palmas_usb *palmas_usb;
int status;
+ if (!palmas) {
+ dev_err(&pdev->dev, "failed to get valid parent\n");
+ return -EINVAL;
+ }
+
palmas_usb = devm_kzalloc(&pdev->dev, sizeof(*palmas_usb), GFP_KERNEL);
if (!palmas_usb)
return -ENOMEM;
diff --git a/drivers/extcon/extcon-rt8973a.c b/drivers/extcon/extcon-rt8973a.c
index 174c388739ea..3e882aa107e8 100644
--- a/drivers/extcon/extcon-rt8973a.c
+++ b/drivers/extcon/extcon-rt8973a.c
@@ -142,8 +142,10 @@ enum rt8973a_muic_acc_type {
RT8973A_MUIC_ADC_UNKNOWN_ACC_5,
RT8973A_MUIC_ADC_OPEN = 0x1f,
- /* The below accessories has same ADC value (0x1f).
- So, Device type1 is used to separate specific accessory. */
+ /*
+ * The below accessories has same ADC value (0x1f).
+ * So, Device type1 is used to separate specific accessory.
+ */
/* |---------|--ADC| */
/* | [7:5]|[4:0]| */
RT8973A_MUIC_ADC_USB = 0x3f, /* | 001|11111| */
diff --git a/drivers/extcon/extcon-sm5502.c b/drivers/extcon/extcon-sm5502.c
index b22325688503..106ef0297b53 100644
--- a/drivers/extcon/extcon-sm5502.c
+++ b/drivers/extcon/extcon-sm5502.c
@@ -135,8 +135,10 @@ enum sm5502_muic_acc_type {
SM5502_MUIC_ADC_AUDIO_TYPE1,
SM5502_MUIC_ADC_OPEN = 0x1f,
- /* The below accessories have same ADC value (0x1f or 0x1e).
- So, Device type1 is used to separate specific accessory. */
+ /*
+ * The below accessories have same ADC value (0x1f or 0x1e).
+ * So, Device type1 is used to separate specific accessory.
+ */
/* |---------|--ADC| */
/* | [7:5]|[4:0]| */
SM5502_MUIC_ADC_AUDIO_TYPE1_FULL_REMOTE = 0x3e, /* | 001|11110| */
diff --git a/drivers/extcon/extcon-usb-gpio.c b/drivers/extcon/extcon-usb-gpio.c
index d589c5feff3d..a5e1882b4ca6 100644
--- a/drivers/extcon/extcon-usb-gpio.c
+++ b/drivers/extcon/extcon-usb-gpio.c
@@ -27,6 +27,7 @@
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/acpi.h>
+#include <linux/pinctrl/consumer.h>
#define USB_GPIO_DEBOUNCE_MS 20 /* ms */
@@ -245,6 +246,9 @@ static int usb_extcon_suspend(struct device *dev)
if (info->vbus_gpiod)
disable_irq(info->vbus_irq);
+ if (!device_may_wakeup(dev))
+ pinctrl_pm_select_sleep_state(dev);
+
return ret;
}
@@ -253,6 +257,9 @@ static int usb_extcon_resume(struct device *dev)
struct usb_extcon_info *info = dev_get_drvdata(dev);
int ret = 0;
+ if (!device_may_wakeup(dev))
+ pinctrl_pm_select_default_state(dev);
+
if (device_may_wakeup(dev)) {
if (info->id_gpiod) {
ret = disable_irq_wake(info->id_irq);
diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c
index 78298460d168..09ac5e70c2f3 100644
--- a/drivers/extcon/extcon.c
+++ b/drivers/extcon/extcon.c
@@ -30,11 +30,12 @@
#include <linux/device.h>
#include <linux/fs.h>
#include <linux/err.h>
-#include <linux/extcon.h>
#include <linux/of.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
+#include "extcon.h"
+
#define SUPPORTED_CABLE_MAX 32
#define CABLE_NAME_MAX 30
@@ -59,7 +60,7 @@ struct __extcon_info {
[EXTCON_USB_HOST] = {
.type = EXTCON_TYPE_USB,
.id = EXTCON_USB_HOST,
- .name = "USB_HOST",
+ .name = "USB-HOST",
},
/* Charging external connector */
@@ -98,6 +99,11 @@ struct __extcon_info {
.id = EXTCON_CHG_WPT,
.name = "WPT",
},
+ [EXTCON_CHG_USB_PD] = {
+ .type = EXTCON_TYPE_CHG | EXTCON_TYPE_USB,
+ .id = EXTCON_CHG_USB_PD,
+ .name = "PD",
+ },
/* Jack external connector */
[EXTCON_JACK_MICROPHONE] = {
@@ -453,7 +459,7 @@ int extcon_sync(struct extcon_dev *edev, unsigned int id)
dev_err(&edev->dev, "out of memory in extcon_set_state\n");
kobject_uevent(&edev->dev.kobj, KOBJ_CHANGE);
- return 0;
+ return -ENOMEM;
}
length = name_show(&edev->dev, NULL, prop_buf);
@@ -906,35 +912,16 @@ int extcon_register_notifier(struct extcon_dev *edev, unsigned int id,
unsigned long flags;
int ret, idx = -EINVAL;
- if (!nb)
+ if (!edev || !nb)
return -EINVAL;
- if (edev) {
- idx = find_cable_index_by_id(edev, id);
- if (idx < 0)
- return idx;
-
- spin_lock_irqsave(&edev->lock, flags);
- ret = raw_notifier_chain_register(&edev->nh[idx], nb);
- spin_unlock_irqrestore(&edev->lock, flags);
- } else {
- struct extcon_dev *extd;
-
- mutex_lock(&extcon_dev_list_lock);
- list_for_each_entry(extd, &extcon_dev_list, entry) {
- idx = find_cable_index_by_id(extd, id);
- if (idx >= 0)
- break;
- }
- mutex_unlock(&extcon_dev_list_lock);
+ idx = find_cable_index_by_id(edev, id);
+ if (idx < 0)
+ return idx;
- if (idx >= 0) {
- edev = extd;
- return extcon_register_notifier(extd, id, nb);
- } else {
- ret = -ENODEV;
- }
- }
+ spin_lock_irqsave(&edev->lock, flags);
+ ret = raw_notifier_chain_register(&edev->nh[idx], nb);
+ spin_unlock_irqrestore(&edev->lock, flags);
return ret;
}
diff --git a/drivers/extcon/extcon.h b/drivers/extcon/extcon.h
new file mode 100644
index 000000000000..993ddccafe11
--- /dev/null
+++ b/drivers/extcon/extcon.h
@@ -0,0 +1,62 @@
+#ifndef __LINUX_EXTCON_INTERNAL_H__
+#define __LINUX_EXTCON_INTERNAL_H__
+
+#include <linux/extcon.h>
+
+/**
+ * struct extcon_dev - An extcon device represents one external connector.
+ * @name: The name of this extcon device. Parent device name is
+ * used if NULL.
+ * @supported_cable: Array of supported cable names ending with EXTCON_NONE.
+ * If supported_cable is NULL, cable name related APIs
+ * are disabled.
+ * @mutually_exclusive: Array of mutually exclusive set of cables that cannot
+ * be attached simultaneously. The array should be
+ * ending with NULL or be NULL (no mutually exclusive
+ * cables). For example, if it is { 0x7, 0x30, 0}, then,
+ * {0, 1}, {0, 1, 2}, {0, 2}, {1, 2}, or {4, 5} cannot
+ * be attached simulataneously. {0x7, 0} is equivalent to
+ * {0x3, 0x6, 0x5, 0}. If it is {0xFFFFFFFF, 0}, there
+ * can be no simultaneous connections.
+ * @dev: Device of this extcon.
+ * @state: Attach/detach state of this extcon. Do not provide at
+ * register-time.
+ * @nh: Notifier for the state change events from this extcon
+ * @entry: To support list of extcon devices so that users can
+ * search for extcon devices based on the extcon name.
+ * @lock:
+ * @max_supported: Internal value to store the number of cables.
+ * @extcon_dev_type: Device_type struct to provide attribute_groups
+ * customized for each extcon device.
+ * @cables: Sysfs subdirectories. Each represents one cable.
+ *
+ * In most cases, users only need to provide "User initializing data" of
+ * this struct when registering an extcon. In some exceptional cases,
+ * optional callbacks may be needed. However, the values in "internal data"
+ * are overwritten by register function.
+ */
+struct extcon_dev {
+ /* Optional user initializing data */
+ const char *name;
+ const unsigned int *supported_cable;
+ const u32 *mutually_exclusive;
+
+ /* Internal data. Please do not set. */
+ struct device dev;
+ struct raw_notifier_head *nh;
+ struct list_head entry;
+ int max_supported;
+ spinlock_t lock; /* could be called by irq handler */
+ u32 state;
+
+ /* /sys/class/extcon/.../cable.n/... */
+ struct device_type extcon_dev_type;
+ struct extcon_cable *cables;
+
+ /* /sys/class/extcon/.../mutually_exclusive/... */
+ struct attribute_group attr_g_muex;
+ struct attribute **attrs_muex;
+ struct device_attribute *d_attrs_muex;
+};
+
+#endif /* __LINUX_EXTCON_INTERNAL_H__ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-12 06:01:01 +0000