Commit 87100151 authored by Jisheng Zhang's avatar Jisheng Zhang Committed by Bartosz Golaszewski
Browse files

gpio: fxl6408: Add suspend/resume support 



Currently, during suspend, do nothing; during resume, just sync the
regmap cache to hw regs.

Signed-off-by: default avatarJisheng Zhang <jszhang@kernel.org>
Link: https://lore.kernel.org/r/20251119140455.10096-1-jszhang@kernel.org


Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent 5dd9332c

drivers/gpio/gpio-fxl6408.c

+13 −0
Original line number Diff line number Diff line
@@ -123,6 +123,8 @@ static int fxl6408_probe(struct i2c_client *client) 
	if (ret)

		return ret;



	i2c_set_clientdata(client, gpio_config.regmap);



	/* Disable High-Z of outputs, so that our OUTPUT updates actually take effect. */

	ret = regmap_write(gpio_config.regmap, FXL6408_REG_OUTPUT_HIGH_Z, 0);

	if (ret)
@@ -131,6 +133,16 @@ static int fxl6408_probe(struct i2c_client *client) 
	return PTR_ERR_OR_ZERO(devm_gpio_regmap_register(dev, &gpio_config));

}



static int fxl6408_resume(struct device *dev)

{

	struct regmap *regmap = dev_get_drvdata(dev);



	regcache_mark_dirty(regmap);

	return regcache_sync(regmap);

}



static DEFINE_SIMPLE_DEV_PM_OPS(fxl6408_pm_ops, NULL, fxl6408_resume);



static const __maybe_unused struct of_device_id fxl6408_dt_ids[] = {

	{ .compatible = "fcs,fxl6408" },

	{ }
@@ -146,6 +158,7 @@ MODULE_DEVICE_TABLE(i2c, fxl6408_id); 
static struct i2c_driver fxl6408_driver = {

	.driver = {

		.name	= "fxl6408",

		.pm	= pm_sleep_ptr(&fxl6408_pm_ops),

		.of_match_table = fxl6408_dt_ids,

	},

	.probe		= fxl6408_probe,