extcon: adc-jack: add suspend/resume support (1b6cf310) · Commits · 戴 / test

drivers/extcon/extcon-adc-jack.c

+34 −0

Original line number	Diff line number	Diff line
		@@ -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,
		},
		};

include/linux/extcon/extcon-adc-jack.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -53,6 +53,7 @@ struct adc_jack_cond {
		* milli-seconds after the interrupt occurs. You may
		* describe such delays with @handling_delay_ms, which
		* is rounded-off by jiffies.
		* @wakeup_source: flag to wake up the system for extcon events.
		*/
		struct adc_jack_pdata {
		const char *name;
		@@ -65,6 +66,7 @@ struct adc_jack_pdata {

		unsigned long irq_flags;
		unsigned long handling_delay_ms; /* in ms */
		bool wakeup_source;
		};

		#endif /* _EXTCON_ADC_JACK_H */

Admin message