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-rw-r--r--drivers/extcon/Kconfig4
-rw-r--r--drivers/extcon/Makefile2
-rw-r--r--drivers/extcon/extcon-adc-jack.c3
-rw-r--r--drivers/extcon/extcon-arizona.c25
-rw-r--r--drivers/extcon/extcon-class.c16
-rw-r--r--drivers/extcon/extcon-gpio.c2
-rw-r--r--drivers/extcon/extcon-palmas.c134
-rw-r--r--drivers/extcon/of_extcon.c64
8 files changed, 188 insertions, 62 deletions
diff --git a/drivers/extcon/Kconfig b/drivers/extcon/Kconfig
index 63f454e20576..f1d54a3985bd 100644
--- a/drivers/extcon/Kconfig
+++ b/drivers/extcon/Kconfig
@@ -14,6 +14,10 @@ if EXTCON
comment "Extcon Device Drivers"
+config OF_EXTCON
+ def_tristate y
+ depends on OF
+
config EXTCON_GPIO
tristate "GPIO extcon support"
depends on GPIOLIB
diff --git a/drivers/extcon/Makefile b/drivers/extcon/Makefile
index 540e2c3a4431..759fdae46f95 100644
--- a/drivers/extcon/Makefile
+++ b/drivers/extcon/Makefile
@@ -2,6 +2,8 @@
# Makefile for external connector class (extcon) devices
#
+obj-$(CONFIG_OF_EXTCON) += of_extcon.o
+
obj-$(CONFIG_EXTCON) += extcon-class.o
obj-$(CONFIG_EXTCON_GPIO) += extcon-gpio.o
obj-$(CONFIG_EXTCON_ADC_JACK) += extcon-adc-jack.o
diff --git a/drivers/extcon/extcon-adc-jack.c b/drivers/extcon/extcon-adc-jack.c
index d0233cd18ffa..5985807e52c9 100644
--- a/drivers/extcon/extcon-adc-jack.c
+++ b/drivers/extcon/extcon-adc-jack.c
@@ -87,7 +87,8 @@ static irqreturn_t adc_jack_irq_thread(int irq, void *_data)
{
struct adc_jack_data *data = _data;
- schedule_delayed_work(&data->handler, data->handling_delay);
+ queue_delayed_work(system_power_efficient_wq,
+ &data->handler, data->handling_delay);
return IRQ_HANDLED;
}
diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index 7a1b4a7791ba..e55713083c78 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -890,8 +890,9 @@ static void arizona_micd_detect(struct work_struct *work)
handled:
if (info->detecting)
- schedule_delayed_work(&info->micd_timeout_work,
- msecs_to_jiffies(info->micd_timeout));
+ queue_delayed_work(system_power_efficient_wq,
+ &info->micd_timeout_work,
+ msecs_to_jiffies(info->micd_timeout));
pm_runtime_mark_last_busy(info->dev);
mutex_unlock(&info->lock);
@@ -912,8 +913,9 @@ static irqreturn_t arizona_micdet(int irq, void *data)
mutex_unlock(&info->lock);
if (debounce)
- schedule_delayed_work(&info->micd_detect_work,
- msecs_to_jiffies(debounce));
+ queue_delayed_work(system_power_efficient_wq,
+ &info->micd_detect_work,
+ msecs_to_jiffies(debounce));
else
arizona_micd_detect(&info->micd_detect_work.work);
@@ -967,12 +969,14 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
if (val == info->last_jackdet) {
dev_dbg(arizona->dev, "Suppressing duplicate JACKDET\n");
if (cancelled_hp)
- schedule_delayed_work(&info->hpdet_work,
- msecs_to_jiffies(HPDET_DEBOUNCE));
+ queue_delayed_work(system_power_efficient_wq,
+ &info->hpdet_work,
+ msecs_to_jiffies(HPDET_DEBOUNCE));
if (cancelled_mic)
- schedule_delayed_work(&info->micd_timeout_work,
- msecs_to_jiffies(info->micd_timeout));
+ queue_delayed_work(system_power_efficient_wq,
+ &info->micd_timeout_work,
+ msecs_to_jiffies(info->micd_timeout));
goto out;
}
@@ -994,8 +998,9 @@ static irqreturn_t arizona_jackdet(int irq, void *data)
arizona_start_mic(info);
} else {
- schedule_delayed_work(&info->hpdet_work,
- msecs_to_jiffies(HPDET_DEBOUNCE));
+ queue_delayed_work(system_power_efficient_wq,
+ &info->hpdet_work,
+ msecs_to_jiffies(HPDET_DEBOUNCE));
}
regmap_update_bits(arizona->regmap,
diff --git a/drivers/extcon/extcon-class.c b/drivers/extcon/extcon-class.c
index 18ccadef43fd..148382faded9 100644
--- a/drivers/extcon/extcon-class.c
+++ b/drivers/extcon/extcon-class.c
@@ -148,6 +148,7 @@ static ssize_t state_store(struct device *dev, struct device_attribute *attr,
return count;
}
+static DEVICE_ATTR_RW(state);
static ssize_t name_show(struct device *dev, struct device_attribute *attr,
char *buf)
@@ -163,6 +164,7 @@ static ssize_t name_show(struct device *dev, struct device_attribute *attr,
return sprintf(buf, "%s\n", dev_name(edev->dev));
}
+static DEVICE_ATTR_RO(name);
static ssize_t cable_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -527,11 +529,12 @@ int extcon_unregister_notifier(struct extcon_dev *edev,
}
EXPORT_SYMBOL_GPL(extcon_unregister_notifier);
-static struct device_attribute extcon_attrs[] = {
- __ATTR(state, S_IRUGO | S_IWUSR, state_show, state_store),
- __ATTR_RO(name),
- __ATTR_NULL,
+static struct attribute *extcon_attrs[] = {
+ &dev_attr_state.attr,
+ &dev_attr_name.attr,
+ NULL,
};
+ATTRIBUTE_GROUPS(extcon);
static int create_extcon_class(void)
{
@@ -539,7 +542,7 @@ static int create_extcon_class(void)
extcon_class = class_create(THIS_MODULE, "extcon");
if (IS_ERR(extcon_class))
return PTR_ERR(extcon_class);
- extcon_class->dev_attrs = extcon_attrs;
+ extcon_class->dev_groups = extcon_groups;
#if defined(CONFIG_ANDROID)
switch_class = class_compat_register("switch");
@@ -602,7 +605,8 @@ int extcon_dev_register(struct extcon_dev *edev, struct device *dev)
edev->dev->class = extcon_class;
edev->dev->release = extcon_dev_release;
- dev_set_name(edev->dev, "%s", edev->name ? edev->name : dev_name(dev));
+ edev->name = edev->name ? edev->name : dev_name(dev);
+ dev_set_name(edev->dev, "%s", edev->name);
if (edev->max_supported) {
char buf[10];
diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
index 02bec32adde4..f874c30ddbff 100644
--- a/drivers/extcon/extcon-gpio.c
+++ b/drivers/extcon/extcon-gpio.c
@@ -56,7 +56,7 @@ static irqreturn_t gpio_irq_handler(int irq, void *dev_id)
{
struct gpio_extcon_data *extcon_data = dev_id;
- schedule_delayed_work(&extcon_data->work,
+ queue_delayed_work(system_power_efficient_wq, &extcon_data->work,
extcon_data->debounce_jiffies);
return IRQ_HANDLED;
}
diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index b752a0ad7b63..89fdd05c5fd6 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -57,6 +57,7 @@ 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_cable_state(&palmas_usb->edev, "USB", true);
+ dev_info(palmas_usb->dev, "USB cable is attached\n");
} else {
dev_dbg(palmas_usb->dev,
"Spurious connect event detected\n");
@@ -65,6 +66,7 @@ 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_cable_state(&palmas_usb->edev, "USB", false);
+ dev_info(palmas_usb->dev, "USB cable is detached\n");
} else {
dev_dbg(palmas_usb->dev,
"Spurious disconnect event detected\n");
@@ -84,28 +86,23 @@ static irqreturn_t palmas_id_irq_handler(int irq, void *_palmas_usb)
if (set & PALMAS_USB_ID_INT_SRC_ID_GND) {
palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
- PALMAS_USB_ID_INT_EN_HI_SET,
- PALMAS_USB_ID_INT_EN_HI_SET_ID_FLOAT);
- palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
- PALMAS_USB_ID_INT_EN_HI_CLR,
- PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
- palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_GND);
palmas_usb->linkstat = PALMAS_USB_STATE_ID;
extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", true);
+ dev_info(palmas_usb->dev, "USB-HOST cable is attached\n");
} else if (set & PALMAS_USB_ID_INT_SRC_ID_FLOAT) {
palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
- PALMAS_USB_ID_INT_EN_HI_SET,
- PALMAS_USB_ID_INT_EN_HI_SET_ID_GND);
- palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
- PALMAS_USB_ID_INT_EN_HI_CLR,
- PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
- palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_LATCH_CLR,
PALMAS_USB_ID_INT_EN_HI_CLR_ID_FLOAT);
palmas_usb->linkstat = PALMAS_USB_STATE_DISCONNECT;
extcon_set_cable_state(&palmas_usb->edev, "USB-HOST", false);
+ dev_info(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_cable_state(&palmas_usb->edev, "USB-HOST", false);
+ dev_info(palmas_usb->dev, "USB-HOST cable is detached\n");
}
return IRQ_HANDLED;
@@ -122,13 +119,17 @@ static void palmas_enable_irq(struct palmas_usb *palmas_usb)
palmas_write(palmas_usb->palmas, PALMAS_USB_OTG_BASE,
PALMAS_USB_ID_INT_EN_HI_SET,
- PALMAS_USB_ID_INT_EN_HI_SET_ID_GND);
+ PALMAS_USB_ID_INT_EN_HI_SET_ID_GND |
+ PALMAS_USB_ID_INT_EN_HI_SET_ID_FLOAT);
- palmas_vbus_irq_handler(palmas_usb->vbus_irq, palmas_usb);
+ if (palmas_usb->enable_vbus_detection)
+ palmas_vbus_irq_handler(palmas_usb->vbus_irq, palmas_usb);
/* cold plug for host mode needs this delay */
- msleep(30);
- palmas_id_irq_handler(palmas_usb->id_irq, palmas_usb);
+ if (palmas_usb->enable_id_detection) {
+ msleep(30);
+ palmas_id_irq_handler(palmas_usb->id_irq, palmas_usb);
+ }
}
static int palmas_usb_probe(struct platform_device *pdev)
@@ -139,21 +140,25 @@ static int palmas_usb_probe(struct platform_device *pdev)
struct palmas_usb *palmas_usb;
int status;
- if (node && !pdata) {
- pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
-
- if (!pdata)
- return -ENOMEM;
-
- pdata->wakeup = of_property_read_bool(node, "ti,wakeup");
- } else if (!pdata) {
- return -EINVAL;
- }
-
palmas_usb = devm_kzalloc(&pdev->dev, sizeof(*palmas_usb), GFP_KERNEL);
if (!palmas_usb)
return -ENOMEM;
+ if (node && !pdata) {
+ palmas_usb->wakeup = of_property_read_bool(node, "ti,wakeup");
+ palmas_usb->enable_id_detection = of_property_read_bool(node,
+ "ti,enable-id-detection");
+ palmas_usb->enable_vbus_detection = of_property_read_bool(node,
+ "ti,enable-vbus-detection");
+ } else {
+ palmas_usb->wakeup = true;
+ palmas_usb->enable_id_detection = true;
+ palmas_usb->enable_vbus_detection = true;
+
+ if (pdata)
+ palmas_usb->wakeup = pdata->wakeup;
+ }
+
palmas->usb = palmas_usb;
palmas_usb->palmas = palmas;
@@ -168,11 +173,10 @@ static int palmas_usb_probe(struct platform_device *pdev)
palmas_usb->vbus_irq = regmap_irq_get_virq(palmas->irq_data,
PALMAS_VBUS_IRQ);
- palmas_usb_wakeup(palmas, pdata->wakeup);
+ palmas_usb_wakeup(palmas, palmas_usb->wakeup);
platform_set_drvdata(pdev, palmas_usb);
- palmas_usb->edev.name = "palmas-usb";
palmas_usb->edev.supported_cable = palmas_extcon_cable;
palmas_usb->edev.mutually_exclusive = mutually_exclusive;
@@ -182,28 +186,36 @@ static int palmas_usb_probe(struct platform_device *pdev)
return status;
}
- status = devm_request_threaded_irq(palmas_usb->dev, palmas_usb->id_irq,
- NULL, palmas_id_irq_handler,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- "palmas_usb_id", palmas_usb);
- if (status < 0) {
- dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
+ if (palmas_usb->enable_id_detection) {
+ status = devm_request_threaded_irq(palmas_usb->dev,
+ palmas_usb->id_irq,
+ NULL, palmas_id_irq_handler,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
+ IRQF_ONESHOT | IRQF_EARLY_RESUME,
+ "palmas_usb_id", palmas_usb);
+ if (status < 0) {
+ dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
palmas_usb->id_irq, status);
- goto fail_extcon;
+ goto fail_extcon;
+ }
}
- status = devm_request_threaded_irq(palmas_usb->dev,
- palmas_usb->vbus_irq, NULL, palmas_vbus_irq_handler,
- IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
- "palmas_usb_vbus", palmas_usb);
- if (status < 0) {
- dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
+ if (palmas_usb->enable_vbus_detection) {
+ status = devm_request_threaded_irq(palmas_usb->dev,
+ palmas_usb->vbus_irq, NULL,
+ palmas_vbus_irq_handler,
+ IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING |
+ IRQF_ONESHOT | IRQF_EARLY_RESUME,
+ "palmas_usb_vbus", palmas_usb);
+ if (status < 0) {
+ dev_err(&pdev->dev, "can't get IRQ %d, err %d\n",
palmas_usb->vbus_irq, status);
- goto fail_extcon;
+ goto fail_extcon;
+ }
}
palmas_enable_irq(palmas_usb);
-
+ device_set_wakeup_capable(&pdev->dev, true);
return 0;
fail_extcon:
@@ -221,6 +233,39 @@ static int palmas_usb_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int palmas_usb_suspend(struct device *dev)
+{
+ struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev)) {
+ if (palmas_usb->enable_vbus_detection)
+ enable_irq_wake(palmas_usb->vbus_irq);
+ if (palmas_usb->enable_id_detection)
+ enable_irq_wake(palmas_usb->id_irq);
+ }
+ return 0;
+}
+
+static int palmas_usb_resume(struct device *dev)
+{
+ struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
+
+ if (device_may_wakeup(dev)) {
+ if (palmas_usb->enable_vbus_detection)
+ disable_irq_wake(palmas_usb->vbus_irq);
+ if (palmas_usb->enable_id_detection)
+ disable_irq_wake(palmas_usb->id_irq);
+ }
+ return 0;
+};
+#endif
+
+static const struct dev_pm_ops palmas_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(palmas_usb_suspend,
+ palmas_usb_resume)
+};
+
static struct of_device_id of_palmas_match_tbl[] = {
{ .compatible = "ti,palmas-usb", },
{ .compatible = "ti,twl6035-usb", },
@@ -234,6 +279,7 @@ static struct platform_driver palmas_usb_driver = {
.name = "palmas-usb",
.of_match_table = of_palmas_match_tbl,
.owner = THIS_MODULE,
+ .pm = &palmas_pm_ops,
},
};
diff --git a/drivers/extcon/of_extcon.c b/drivers/extcon/of_extcon.c
new file mode 100644
index 000000000000..72173ecbb311
--- /dev/null
+++ b/drivers/extcon/of_extcon.c
@@ -0,0 +1,64 @@
+/*
+ * OF helpers for External connector (extcon) framework
+ *
+ * Copyright (C) 2013 Texas Instruments, Inc.
+ * Kishon Vijay Abraham I <kishon@ti.com>
+ *
+ * Copyright (C) 2013 Samsung Electronics
+ * Chanwoo Choi <cw00.choi@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/extcon.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/extcon/of_extcon.h>
+
+/*
+ * of_extcon_get_extcon_dev - Get the name of extcon device from devicetree
+ * @dev - instance to the given device
+ * @index - index into list of extcon_dev
+ *
+ * return the instance of extcon device
+ */
+struct extcon_dev *of_extcon_get_extcon_dev(struct device *dev, int index)
+{
+ struct device_node *node;
+ struct extcon_dev *edev;
+ struct platform_device *extcon_parent_dev;
+
+ if (!dev->of_node) {
+ dev_dbg(dev, "device does not have a device node entry\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ node = of_parse_phandle(dev->of_node, "extcon", index);
+ if (!node) {
+ dev_dbg(dev, "failed to get phandle in %s node\n",
+ dev->of_node->full_name);
+ return ERR_PTR(-ENODEV);
+ }
+
+ extcon_parent_dev = of_find_device_by_node(node);
+ if (!extcon_parent_dev) {
+ dev_dbg(dev, "unable to find device by node\n");
+ return ERR_PTR(-EPROBE_DEFER);
+ }
+
+ edev = extcon_get_extcon_dev(dev_name(&extcon_parent_dev->dev));
+ if (!edev) {
+ dev_dbg(dev, "unable to get extcon device : %s\n",
+ dev_name(&extcon_parent_dev->dev));
+ return ERR_PTR(-ENODEV);
+ }
+
+ return edev;
+}
+EXPORT_SYMBOL_GPL(of_extcon_get_extcon_dev);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 15:19:09 +0100