diff options
| author |   Fabrice Gasnier <fabrice.gasnier@st.com> | 2019-03-21 17:47:26 +0100 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-04-04 20:20:37 +0100 |
| commit | 9491f75fe2ea7a8bff0d05af560a0d6e266263ec (patch) | |
| tree | a50242789bda0bfc4325b5508c9146d93c9b3a23 /drivers/iio | |
| parent | iio: adc: stm32-dfsdm: move dma slave config to start routine (diff) | |
| download | linux-dev-9491f75fe2ea7a8bff0d05af560a0d6e266263ec.tar.xz linux-dev-9491f75fe2ea7a8bff0d05af560a0d6e266263ec.zip | |
iio: adc: stm32-dfsdm: enable hw consumer
Optionally enable IIO hw consumer, when provided (e.g. for DFSDM_IIO type).
This is precursor patch to introduce buffer modes.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/stm32-dfsdm-adc.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c index 66e2ea038d9a..b491424d15fe 100644 --- a/drivers/iio/adc/stm32-dfsdm-adc.c +++ b/drivers/iio/adc/stm32-dfsdm-adc.c @@ -630,9 +630,15 @@ 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) - return ret; + goto err_stop_hwc; ret = stm32_dfsdm_adc_dma_start(indio_dev); if (ret) { @@ -652,6 +658,9 @@ err_stop_dma: stm32_dfsdm_adc_dma_stop(indio_dev); stop_dfsdm: stm32_dfsdm_stop_dfsdm(adc->dfsdm); +err_stop_hwc: + if (adc->hwc) + iio_hw_consumer_disable(adc->hwc); return ret; } @@ -667,6 +676,9 @@ 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; } |