diff options
| author | Philippe Schenker <philippe.schenker@toradex.com> | 2019-05-07 16:36:13 +0200 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2020-04-15 01:24:39 +0200 |
| commit | bd8067b0cc4d8bb336124f76cfffcbdc551d9237 (patch) | |
| tree | d43d57917ce2a698faaa28890fc1b1ee7952d92d | |
| parent | 161beb6e21e1a5bee63105b7db1677f95a2073e4 (diff) | |
iio: stmpe-adc: Enable all stmpe-adc interrupts just once
This commit will enable the interrupts of all channels handled by this
driver only once in the probe function.
This will improve performance because one byte less has to be written over
i2c on each read out of the adc. On the fastest ADC mode this will improve
read out speed by 15%.
Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
(cherry picked from commit 4bd44bb2b470459d795c4bac328ed8edb7ebd132)
| -rw-r--r-- | drivers/iio/adc/stmpe-adc.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/iio/adc/stmpe-adc.c b/drivers/iio/adc/stmpe-adc.c index 021fee06684e..8119d7bb2b94 100644 --- a/drivers/iio/adc/stmpe-adc.c +++ b/drivers/iio/adc/stmpe-adc.c @@ -74,9 +74,6 @@ static int stmpe_read_voltage(struct stmpe_adc *info, return -EINVAL; } - stmpe_reg_write(info->stmpe, STMPE_REG_ADC_INT_EN, - STMPE_ADC_CH(info->channel)); - stmpe_reg_write(info->stmpe, STMPE_REG_ADC_CAPT, STMPE_ADC_CH(info->channel)); @@ -334,6 +331,9 @@ static int stmpe_adc_probe(struct platform_device *pdev) if (ret) return ret; + stmpe_reg_write(info->stmpe, STMPE_REG_ADC_INT_EN, + ~(norequest_mask & 0xFF)); + return devm_iio_device_register(&pdev->dev, indio_dev); } |