@@ -77,7 +77,6 @@ struct stm32_dfsdm_adc {
/* ADC specific */
unsigned int oversamp;
- struct iio_hw_consumer *hwc;
struct completion completion;
u32 *buffer;
@@ -1007,12 +1006,6 @@ static int stm32_dfsdm_postenable(struct iio_dev *indio_dev)
/* Reset adc buffer index */
adc->bufi = 0;
- if (adc->hwc) {
- ret = iio_hw_consumer_enable(adc->hwc);
- if (ret < 0)
- return ret;
- }
-
ret = stm32_dfsdm_start_dfsdm(adc->dfsdm);
if (ret < 0)
goto err_stop_hwc;
@@ -1036,8 +1029,6 @@ static int stm32_dfsdm_postenable(struct iio_dev *indio_dev)
stop_dfsdm:
stm32_dfsdm_stop_dfsdm(adc->dfsdm);
err_stop_hwc:
- if (adc->hwc)
- iio_hw_consumer_disable(adc->hwc);
return ret;
}
@@ -1052,9 +1043,6 @@ static int stm32_dfsdm_predisable(struct iio_dev *indio_dev)
stm32_dfsdm_stop_dfsdm(adc->dfsdm);
- if (adc->hwc)
- iio_hw_consumer_disable(adc->hwc);
-
return 0;
}
@@ -1231,7 +1219,6 @@ static int stm32_dfsdm_read_raw(struct iio_dev *indio_dev,
ret = iio_device_claim_direct_mode(indio_dev);
if (ret)
return ret;
- ret = iio_hw_consumer_enable(adc->hwc);
if (ret < 0) {
dev_err(&indio_dev->dev,
"%s: IIO enable failed (channel %d)\n",
@@ -1240,7 +1227,6 @@ static int stm32_dfsdm_read_raw(struct iio_dev *indio_dev,
return ret;
}
ret = stm32_dfsdm_single_conv(indio_dev, chan, val);
- iio_hw_consumer_disable(adc->hwc);
if (ret < 0) {
dev_err(&indio_dev->dev,
"%s: Conversion failed (channel %d)\n",
@@ -1450,11 +1436,6 @@ static int stm32_dfsdm_adc_init(struct device *dev, struct iio_dev *indio_dev)
return num_ch < 0 ? num_ch : -EINVAL;
}
- /* Bind to SD modulator IIO device */
- adc->hwc = devm_iio_hw_consumer_alloc(&indio_dev->dev);
- if (IS_ERR(adc->hwc))
- return -EPROBE_DEFER;
-
ch = devm_kcalloc(&indio_dev->dev, num_ch, sizeof(*ch),
GFP_KERNEL);
if (!ch)
The STM32 is currently implemented as a channels consumer of the sigma delta modulator. Change the topology to expose a single IIO device for DFSDM and remove the IIO device associated to the SD modulator. Manage the DFSDM as a channel provider to allow this change. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> --- drivers/iio/adc/stm32-dfsdm-adc.c | 19 ------------------- 1 file changed, 19 deletions(-)