#include <linux/cleanup.h>
#include <linux/crc8.h>
#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
struct hdc3020_data {
struct i2c_client *client;
+ struct gpio_desc *reset_gpio;
struct regulator *vdd_supply;
/*
* Ensure that the sensor configuration (currently only heater is
{
hdc3020_exec_cmd(data, HDC3020_EXIT_AUTO);
+ if (data->reset_gpio)
+ gpiod_set_value_cansleep(data->reset_gpio, 1);
+
return regulator_disable(data->vdd_supply);
}
fsleep(5000);
+ if (data->reset_gpio) {
+ gpiod_set_value_cansleep(data->reset_gpio, 0);
+ fsleep(3000);
+ }
+
if (data->client->irq) {
/*
* The alert output is activated by default upon power up,
return dev_err_probe(&client->dev, PTR_ERR(data->vdd_supply),
"Unable to get VDD regulator\n");
+ data->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(data->reset_gpio))
+ return dev_err_probe(&client->dev, PTR_ERR(data->reset_gpio),
+ "Cannot get reset GPIO\n");
+
ret = hdc3020_power_on(data);
if (ret)
return dev_err_probe(&client->dev, ret, "Power on failed\n");