diff options
| author | Venkat Reddy Talla <vreddytalla@nvidia.com> | 2016-06-30 11:54:00 +0300 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2016-07-02 08:31:34 +0300 |
| commit | 1b6cf310103799f371066453f55755088b008be0 (patch) | |
| tree | 50e987757c5060295487ef8750d4827120e7d126 /drivers | |
| parent | 5d5c4c139dd766dff903ba35d72fb3ec90022e91 (diff) | |
| download | linux-1b6cf310103799f371066453f55755088b008be0.tar.xz | |
extcon: adc-jack: add suspend/resume support
adding suspend and resume funtionality for extcon-adc-jack
driver to configure system wake up for extcon events,
also adding support to enable/disable system wakeup
through flag wakeup_source based on platform requirement.
Signed-off-by: Venkat Reddy Talla <vreddytalla@nvidia.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/extcon/extcon-adc-jack.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/extcon/extcon-adc-jack.c b/drivers/extcon/extcon-adc-jack.c index 7fc0ae1912f8..44e48aa78a84 100644 --- a/drivers/extcon/extcon-adc-jack.c +++ b/drivers/extcon/extcon-adc-jack.c @@ -38,6 +38,7 @@ * @chan: iio channel being queried. */ struct adc_jack_data { + struct device *dev; struct extcon_dev *edev; const unsigned int **cable_names; @@ -49,6 +50,7 @@ struct adc_jack_data { struct delayed_work handler; struct iio_channel *chan; + bool wakeup_source; }; static void adc_jack_handler(struct work_struct *work) @@ -105,6 +107,7 @@ static int adc_jack_probe(struct platform_device *pdev) return -EINVAL; } + data->dev = &pdev->dev; data->edev = devm_extcon_dev_allocate(&pdev->dev, pdata->cable_names); if (IS_ERR(data->edev)) { dev_err(&pdev->dev, "failed to allocate extcon device\n"); @@ -128,6 +131,7 @@ static int adc_jack_probe(struct platform_device *pdev) return PTR_ERR(data->chan); data->handling_delay = msecs_to_jiffies(pdata->handling_delay_ms); + data->wakeup_source = pdata->wakeup_source; INIT_DEFERRABLE_WORK(&data->handler, adc_jack_handler); @@ -151,6 +155,9 @@ static int adc_jack_probe(struct platform_device *pdev) return err; } + if (data->wakeup_source) + device_init_wakeup(&pdev->dev, 1); + return 0; } @@ -165,11 +172,38 @@ static int adc_jack_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int adc_jack_suspend(struct device *dev) +{ + struct adc_jack_data *data = dev_get_drvdata(dev); + + cancel_delayed_work_sync(&data->handler); + if (device_may_wakeup(data->dev)) + enable_irq_wake(data->irq); + + return 0; +} + +static int adc_jack_resume(struct device *dev) +{ + struct adc_jack_data *data = dev_get_drvdata(dev); + + if (device_may_wakeup(data->dev)) + disable_irq_wake(data->irq); + + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +static SIMPLE_DEV_PM_OPS(adc_jack_pm_ops, + adc_jack_suspend, adc_jack_resume); + static struct platform_driver adc_jack_driver = { .probe = adc_jack_probe, .remove = adc_jack_remove, .driver = { .name = "adc-jack", + .pm = &adc_jack_pm_ops, }, }; |