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Date:   Sun, 24 Mar 2019 16:45:59 +0000
From:   Jonathan Cameron <jic23@kernel.org>
To:     Fabrice Gasnier <fabrice.gasnier@st.com>
Cc:     <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>, <mcoquelin.stm32@gmail.com>,
        <alexandre.torgue@st.com>, <linux-iio@vger.kernel.org>,
        <lars@metafoo.de>, <knaack.h@gmx.de>, <pmeerw@pmeerw.net>,
        <linux-stm32@st-md-mailman.stormreply.com>,
        <arnaud.pouliquen@st.com>, <olivier.moysan@st.com>
Subject: Re: [PATCH v2 5/8] iio: adc: stm32-dfsdm: enable hw consumer
Message-ID: <20190324164559.430c12f9@archlinux>
In-Reply-To: <1553186849-6261-6-git-send-email-fabrice.gasnier@st.com>
References: <1553186849-6261-1-git-send-email-fabrice.gasnier@st.com>
        <1553186849-6261-6-git-send-email-fabrice.gasnier@st.com>
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On Thu, 21 Mar 2019 17:47:26 +0100
Fabrice Gasnier <fabrice.gasnier@st.com> wrote:

> 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>
Applied, 
Thanks,

Jonathan
> ---
>  drivers/iio/adc/stm32-dfsdm-adc.c | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
> index 66e2ea0..b491424 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 @@ static int stm32_dfsdm_postenable(struct iio_dev *indio_dev)
>  	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;
>  }
>