Commit 86b6c05f authored by Akinobu Mita's avatar Akinobu Mita Committed by Greg Kroah-Hartman

iio: adc: ti-ads1015: enable conversion when CONFIG_PM is not set

commit e8245c68 upstream.

The ADS1015 device have two operating modes, continuous conversion mode
and single-shot mode.  This driver assumes that the continuous conversion
mode is selected by runtime resume callback when the ADC result is
requested.

If CONFIG_PM is disabled, the device is always in the default single-shot
mode and no one begins a single conversion.  So the conversion register
doesn't contain valid ADC result.  Fix it by changing the continuous mode
in probe function.

Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent dac6ce35
......@@ -623,6 +623,13 @@ static int ads1015_probe(struct i2c_client *client,
dev_err(&client->dev, "iio triggered buffer setup failed\n");
return ret;
}
ret = regmap_update_bits(data->regmap, ADS1015_CFG_REG,
ADS1015_CFG_MOD_MASK,
ADS1015_CONTINUOUS << ADS1015_CFG_MOD_SHIFT);
if (ret)
return ret;
ret = pm_runtime_set_active(&client->dev);
if (ret)
goto err_buffer_cleanup;
......
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