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extcon: palams: add support for suspend/resume 

Add suspend/resume callbacks and support for wakeup from
suspend on USB HOST or USB Device cable insertion or removal.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
This commit is contained in:
Laxman Dewangan 2013-07-09 18:34:23 +05:30 committed by Chanwoo Choi
parent 002945f014
commit 024783ef42
1 changed files with 35 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

38
drivers/extcon/extcon-palmas.c
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@ -181,7 +181,8 @@ static int palmas_usb_probe(struct platform_device *pdev)
status = devm_request_threaded_irq(palmas_usb->dev, palmas_usb->id_irq,
NULL, palmas_id_irq_handler,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
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",
@ -191,7 +192,8 @@ static int palmas_usb_probe(struct platform_device *pdev)
status = devm_request_threaded_irq(palmas_usb->dev,
palmas_usb->vbus_irq, NULL, palmas_vbus_irq_handler,
IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
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",
@ -200,7 +202,7 @@ static int palmas_usb_probe(struct platform_device *pdev)
}
palmas_enable_irq(palmas_usb);
device_set_wakeup_capable(&pdev->dev, true);
return 0;
fail_extcon:
@ -218,6 +220,35 @@ 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)) {
enable_irq_wake(palmas_usb->vbus_irq);
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)) {
disable_irq_wake(palmas_usb->vbus_irq);
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", },
@ -231,6 +262,7 @@ static struct platform_driver palmas_usb_driver = {
.name = "palmas-usb",
.of_match_table = of_palmas_match_tbl,
.owner = THIS_MODULE,
.pm = &palmas_pm_ops,
},
};