[alsa-devel] [PATCH v4 08/12] IIO: ADC: add STM32 DFSDM sigma delta ADC support

[Arnaud Pouliquen]

On 11/19/2017 03:29 PM, Jonathan Cameron wrote:
> On Thu, 9 Nov 2017 11:12:30 +0100
> Arnaud Pouliquen <arnaud.pouliquen at st.com> wrote:
> 
>> Add DFSDM driver to handle sigma delta ADC.
>> 
>> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen at st.com>
>> ---
>>  drivers/iio/adc/Kconfig           |  13 +
>>  drivers/iio/adc/Makefile          |   1 +
>>  drivers/iio/adc/stm32-dfsdm-adc.c | 741 ++++++++++++++++++++++++++++++++++++++
>>  3 files changed, 755 insertions(+)
>>  create mode 100644 drivers/iio/adc/stm32-dfsdm-adc.c

[...]

>> diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
>> new file mode 100644
>> index 0000000..f9419ab
>> --- /dev/null
>> +++ b/drivers/iio/adc/stm32-dfsdm-adc.c
>> @@ -0,0 +1,741 @@

[...]

>> +static int stm32_dfsdm_adc_remove(struct platform_device *pdev)
>> +{
>> +     struct stm32_dfsdm_adc *adc = platform_get_drvdata(pdev);
>> +     struct iio_dev *indio_dev = iio_priv_to_dev(adc);
>> +
>> +     iio_device_unregister(indio_dev);
> Given that all we have here is device unregister, you could
> use the devm_iio_device_register call and drop the remove entirely.
> (of course you may add stuff here in later patches - I haven't
> looked yet ;)
Yes, the next patch makes devm_iio_device_register useless, so i don't
use it here.

Regards

Arnaud
>> +
>> +     return 0;
>> +}
>> +
>> +static struct platform_driver stm32_dfsdm_adc_driver = {
>> +     .driver = {
>> +             .name = "stm32-dfsdm-adc",
>> +             .of_match_table = stm32_dfsdm_adc_match,
>> +     },
>> +     .probe = stm32_dfsdm_adc_probe,
>> +     .remove = stm32_dfsdm_adc_remove,
>> +
>> +};
>> +module_platform_driver(stm32_dfsdm_adc_driver);
>> +
>> +MODULE_DESCRIPTION("STM32 sigma delta ADC");
>> +MODULE_AUTHOR("Arnaud Pouliquen <arnaud.pouliquen at st.com>");
>> +MODULE_LICENSE("GPL v2");
>