diff options
Diffstat (limited to 'drivers/iio/adc/ti-ads1015.c')
| -rw-r--r-- | drivers/iio/adc/ti-ads1015.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c index e0dc20488335..6a114dcb4a3a 100644 --- a/drivers/iio/adc/ti-ads1015.c +++ b/drivers/iio/adc/ti-ads1015.c @@ -332,7 +332,7 @@ static int ads1015_set_power_state(struct ads1015_data *data, bool on) static int ads1015_get_adc_result(struct ads1015_data *data, int chan, int *val) { - int ret, pga, dr, conv_time; + int ret, pga, dr, dr_old, conv_time; unsigned int old, mask, cfg; if (chan < 0 || chan >= ADS1015_CHANNELS) @@ -358,17 +358,17 @@ int ads1015_get_adc_result(struct ads1015_data *data, int chan, int *val) } cfg = (old & ~mask) | (cfg & mask); - - ret = regmap_write(data->regmap, ADS1015_CFG_REG, cfg); - if (ret) - return ret; - - if (old != cfg || data->conv_invalid) { - int dr_old = (old & ADS1015_CFG_DR_MASK) >> - ADS1015_CFG_DR_SHIFT; - + if (old != cfg) { + ret = regmap_write(data->regmap, ADS1015_CFG_REG, cfg); + if (ret) + return ret; + data->conv_invalid = true; + } + if (data->conv_invalid) { + dr_old = (old & ADS1015_CFG_DR_MASK) >> ADS1015_CFG_DR_SHIFT; conv_time = DIV_ROUND_UP(USEC_PER_SEC, data->data_rate[dr_old]); conv_time += DIV_ROUND_UP(USEC_PER_SEC, data->data_rate[dr]); + conv_time += conv_time / 10; /* 10% internal clock inaccuracy */ usleep_range(conv_time, conv_time + 1); data->conv_invalid = false; } @@ -821,7 +821,6 @@ static const struct attribute_group ads1115_attribute_group = { }; static const struct iio_info ads1015_info = { - .driver_module = THIS_MODULE, .read_raw = ads1015_read_raw, .write_raw = ads1015_write_raw, .read_event_value = ads1015_read_event, @@ -832,7 +831,6 @@ static const struct iio_info ads1015_info = { }; static const struct iio_info ads1115_info = { - .driver_module = THIS_MODULE, .read_raw = ads1015_read_raw, .write_raw = ads1015_write_raw, .read_event_value = ads1015_read_event, |