Commit a9f8afe1 authored by Jonathan Cameron's avatar Jonathan Cameron
Browse files

staging:iio:cdc:ad7150: Really basic regulator support. 



Given DT docs will include regulators, lets just turn them on and
off with driver probe() and remove().

Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: default avatarAlexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20210314181511.531414-20-jic23@kernel.org
parent 18595e71

drivers/staging/iio/cdc/ad7150.c

+21 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include <linux/i2c.h>

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/regulator/consumer.h>

#include <linux/slab.h>



#include <linux/iio/iio.h>
@@ -533,11 +534,19 @@ static const struct iio_info ad7150_info_no_irq = { 
	.read_raw = &ad7150_read_raw,

};



static void ad7150_reg_disable(void *data)

{

	struct regulator *reg = data;



	regulator_disable(reg);

}



static int ad7150_probe(struct i2c_client *client,

			const struct i2c_device_id *id)

{

	struct ad7150_chip_info *chip;

	struct iio_dev *indio_dev;

	struct regulator *reg;

	int ret;



	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
@@ -552,6 +561,18 @@ static int ad7150_probe(struct i2c_client *client, 


	indio_dev->modes = INDIO_DIRECT_MODE;



	reg = devm_regulator_get(&client->dev, "vdd");

	if (IS_ERR(reg))

		return PTR_ERR(reg);



	ret = regulator_enable(reg);

	if (ret)

		return ret;



	ret = devm_add_action_or_reset(&client->dev, ad7150_reg_disable, reg);

	if (ret)

		return ret;



	chip->interrupts[0] = fwnode_irq_get(dev_fwnode(&client->dev), 0);

	if (chip->interrupts[0] < 0)

		return chip->interrupts[0];