diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2017-07-20 18:24:19 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2017-08-20 17:41:13 +0300 |
| commit | e8245c68350104b6022b6783719e843d69ea7c43 (patch) | |
| tree | a90c5438d4d9a529a20be63c14e5574304f5d99c /drivers/iio | |
| parent | 8d0e8e795623bd6229cf48bb7777a1c456c370ed (diff) | |
| download | linux-e8245c68350104b6022b6783719e843d69ea7c43.tar.xz | |
iio: adc: ti-ads1015: enable conversion when CONFIG_PM is not set
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: Akinobu Mita <akinobu.mita@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/ti-ads1015.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c index 9c17a97c1107..9d77e837c09b 100644 --- a/drivers/iio/adc/ti-ads1015.c +++ b/drivers/iio/adc/ti-ads1015.c @@ -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; |