diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2017-07-21 00:24:19 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-09-09 17:39:38 +0200 |
| commit | c72ad1a4fdf044c5253a72bc413e1869d6b16f39 (patch) | |
| tree | 84504713a6ad91103ca254732c005a3e44d2d28e | |
| parent | 115af6c3b155a2e6d1d9c7b3e1db81fbf8d48727 (diff) | |
iio: adc: ti-ads1015: enable conversion when CONFIG_PM is not set
commit e8245c68350104b6022b6783719e843d69ea7c43 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: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 5b1ba5585ffd..c6eeb0cf7868 100644 --- a/drivers/iio/adc/ti-ads1015.c +++ b/drivers/iio/adc/ti-ads1015.c @@ -617,6 +617,13 @@ 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; |