linux-kernel - Re: [PATCH v4 3/4] iio: adc: adi-axi-dac: define supported iio-backend capabilities

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Message-ID: <20260122204411.1e5684d3@jic23-huawei>
Date: Thu, 22 Jan 2026 20:44:11 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Tomas Melin <tomas.melin@...sala.com>
Cc: Michael Hennerich <Michael.Hennerich@...log.com>, Nuno Sa
 <nuno.sa@...log.com>, Lars-Peter Clausen <lars@...afoo.de>, David Lechner
 <dlechner@...libre.com>, Andy Shevchenko <andy@...nel.org>, Olivier Moysan
 <olivier.moysan@...s.st.com>, linux-iio@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 3/4] iio: adc: adi-axi-dac: define supported
 iio-backend capabilities

On Wed, 21 Jan 2026 12:08:32 +0000
Tomas Melin <tomas.melin@...sala.com> wrote:

iio: dac: adi-axi-dac: ...


> Backends support buffering capability so advertise it while registering
> in case a frontend makes checks for it.
> 
> Signed-off-by: Tomas Melin <tomas.melin@...sala.com>
> ---
>  drivers/iio/dac/adi-axi-dac.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/iio/dac/adi-axi-dac.c b/drivers/iio/dac/adi-axi-dac.c
> index 0d525272a8a8378e616fae4d0af606979d7b7716..cd06cd4587af56cd2521efcaa37c407f172e7014 100644
> --- a/drivers/iio/dac/adi-axi-dac.c
> +++ b/drivers/iio/dac/adi-axi-dac.c
> @@ -869,11 +869,13 @@ static const struct iio_backend_ops axi_ad3552r_ops = {
>  static const struct iio_backend_info axi_dac_generic = {
>  	.name = "axi-dac",
>  	.ops = &axi_dac_generic_ops,
> +	.caps = IIO_BACKEND_CAP_BUFFERING,
>  };
>  
>  static const struct iio_backend_info axi_ad3552r = {
>  	.name = "axi-ad3552r",
>  	.ops = &axi_ad3552r_ops,
> +	.caps = IIO_BACKEND_CAP_BUFFERING,
>  };
>  
>  static const struct regmap_config axi_dac_regmap_config = {
>