Based on system design, platform needs to detect the VBUS or ID or
both. Provide option to select this through platform data to
disable part of cable detection through palmas-usb.
Signed-off-by: Laxman Dewangan <ldewangan@xxxxxxxxxx>
---
.../devicetree/bindings/extcon/extcon-palmas.txt | 2 +
drivers/extcon/extcon-palmas.c | 65 +++++++++++++-------
include/linux/mfd/palmas.h | 4 +
3 files changed, 48 insertions(+), 23 deletions(-)
diff --git a/Documentation/devicetree/bindings/extcon/extcon-palmas.txt b/Documentation/devicetree/bindings/extcon/extcon-palmas.txt
index f110e75..8e593ec 100644
--- a/Documentation/devicetree/bindings/extcon/extcon-palmas.txt
+++ b/Documentation/devicetree/bindings/extcon/extcon-palmas.txt
@@ -6,6 +6,8 @@ Required Properties:
Optional Properties:
- ti,wakeup : To enable the wakeup comparator in probe
+ - ti,disable-id-detection: Do not perform ID detection.
+ - ti,disable-vbus-detection: Do not pwerform VBUS detection.
palmas-usb {
compatible = "ti,twl6035-usb", "ti,palmas-usb";
diff --git a/drivers/extcon/extcon-palmas.c b/drivers/extcon/extcon-palmas.c
index b2d64d4..e42046b 100644
--- a/drivers/extcon/extcon-palmas.c
+++ b/drivers/extcon/extcon-palmas.c
@@ -122,11 +122,14 @@ static void palmas_enable_irq(struct palmas_usb *palmas_usb)
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)
@@ -144,6 +147,10 @@ static int palmas_usb_probe(struct platform_device *pdev)
return -ENOMEM;
pdata->wakeup = of_property_read_bool(node, "ti,wakeup");
+ pdata->disable_id_detection = of_property_read_bool(node,
+ "ti,disable-id-detection");
+ pdata->disable_vbus_detection = of_property_read_bool(node,
+ "ti,disable-vbus-detection");
} else if (!pdata) {
return -EINVAL;
}
@@ -154,6 +161,8 @@ static int palmas_usb_probe(struct platform_device *pdev)
palmas->usb = palmas_usb;
palmas_usb->palmas = palmas;
+ palmas_usb->enable_vbus_detection = !pdata->disable_vbus_detection;
+ palmas_usb->enable_id_detection = !pdata->disable_id_detection;
palmas_usb->dev = &pdev->dev;
@@ -180,26 +189,32 @@ 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 |
- 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",
+ 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 |
- 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",
+ 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);
@@ -227,8 +242,10 @@ static int palmas_usb_suspend(struct device *dev)
struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
if (device_may_wakeup(dev)) {
- enable_irq_wake(palmas_usb->vbus_irq);
- enable_irq_wake(palmas_usb->id_irq);
+ 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;
}
@@ -238,8 +255,10 @@ static int palmas_usb_resume(struct device *dev)
struct palmas_usb *palmas_usb = dev_get_drvdata(dev);
if (device_may_wakeup(dev)) {
- disable_irq_wake(palmas_usb->vbus_irq);
- disable_irq_wake(palmas_usb->id_irq);
+ 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;
};
diff --git a/include/linux/mfd/palmas.h b/include/linux/mfd/palmas.h
index 03c22ca..d9ef94c 100644
--- a/include/linux/mfd/palmas.h
+++ b/include/linux/mfd/palmas.h
@@ -204,6 +204,8 @@ struct palmas_pmic_platform_data {
struct palmas_usb_platform_data {
/* Do we enable the wakeup comparator on probe */
int wakeup;
+ bool disable_vbus_detection;
+ bool disable_id_detection;
};
struct palmas_resource_platform_data {
@@ -377,6 +379,8 @@ struct palmas_usb {
int vbus_irq;
enum palmas_usb_state linkstat;
+ bool enable_vbus_detection;
+ bool enable_id_detection;
};
#define comparator_to_palmas(x) container_of((x), struct palmas_usb, comparator)
--
1.7.1.1
--
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