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Commit 4454a837 authored by Yong Zhi's avatar Yong Zhi Committed by Mark Brown
Browse files

ASoC: nau8825: add pm function 



This patch adds pm function and fixes following issues
1.i2c timeout after resume, after resume we saw interrupt handler
is called prior to i2c controller is resumed.This causes i2c timeout
2.no audio after resume

Signed-off-by: default avatarFang, Yang A <yang.a.fang@intel.com>
Signed-off-by: default avatarYong Zhi <yong.zhi@intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 8005c49d

sound/soc/codecs/nau8825.c

+31 −0
Original line number Diff line number Diff line
@@ -1271,6 +1271,36 @@ static int nau8825_i2c_remove(struct i2c_client *client) 
	return 0;

}



#ifdef CONFIG_PM_SLEEP

static int nau8825_suspend(struct device *dev)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct nau8825 *nau8825 = dev_get_drvdata(dev);



	disable_irq(client->irq);

	regcache_cache_only(nau8825->regmap, true);

	regcache_mark_dirty(nau8825->regmap);



	return 0;

}



static int nau8825_resume(struct device *dev)

{

	struct i2c_client *client = to_i2c_client(dev);

	struct nau8825 *nau8825 = dev_get_drvdata(dev);



	regcache_cache_only(nau8825->regmap, false);

	regcache_sync(nau8825->regmap);

	enable_irq(client->irq);



	return 0;

}

#endif



static const struct dev_pm_ops nau8825_pm = {

	SET_SYSTEM_SLEEP_PM_OPS(nau8825_suspend, nau8825_resume)

};



static const struct i2c_device_id nau8825_i2c_ids[] = {

	{ "nau8825", 0 },

	{ }
@@ -1297,6 +1327,7 @@ static struct i2c_driver nau8825_driver = { 
		.name = "nau8825",

		.of_match_table = of_match_ptr(nau8825_of_ids),

		.acpi_match_table = ACPI_PTR(nau8825_acpi_match),

		.pm = &nau8825_pm,

	},

	.probe = nau8825_i2c_probe,

	.remove = nau8825_i2c_remove,