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Staging: iio: adt7316: Use device tree data to set ldac_pin 

Make the driver use device tree instead of the platform data.
Hence, use devm_gpiod_get_optional function to get the data from
device tree for ldac-pin and accordingly make the needed changes
in the driver.

Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
hifive-unleashed-5.1
Shreeya Patel 2018-11-20 22:24:36 +05:30 committed by Jonathan Cameron
parent f8f612530e
commit c63460c429
1 changed files with 10 additions and 4 deletions
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14
drivers/staging/iio/addac/adt7316.c
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@ -177,7 +177,7 @@
struct adt7316_chip_info {
struct adt7316_bus bus;
u16 ldac_pin;
struct gpio_desc *ldac_pin;
u16 int_mask; /* 0x2f */
u8 config1;
u8 config2;
@ -950,8 +950,8 @@ static ssize_t adt7316_store_update_DAC(struct device *dev,
if (ret)
return -EIO;
} else {
gpio_set_value(chip->ldac_pin, 0);
gpio_set_value(chip->ldac_pin, 1);
gpiod_set_value(chip->ldac_pin, 0);
gpiod_set_value(chip->ldac_pin, 1);
}
return len;
@ -2122,7 +2122,13 @@ int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
else
return -ENODEV;
chip->ldac_pin = adt7316_platform_data[1];
chip->ldac_pin = devm_gpiod_get_optional(dev, "adi,ldac", GPIOD_OUT_LOW);
if (IS_ERR(chip->ldac_pin)) {
ret = PTR_ERR(chip->ldac_pin);
dev_err(dev, "Failed to request ldac GPIO: %d\n", ret);
return ret;
}
if (chip->ldac_pin) {
chip->config3 |= ADT7316_DA_EN_VIA_DAC_LDCA;
if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)