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

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Message-Id: <20260121-b4-ad9467-optional-backend-v4-3-18d2c0d450cc@vaisala.com>
Date: Wed, 21 Jan 2026 12:08:32 +0000
From: Tomas Melin <tomas.melin@...sala.com>
To: Michael Hennerich <Michael.Hennerich@...log.com>, 
 Nuno Sa <nuno.sa@...log.com>, Lars-Peter Clausen <lars@...afoo.de>, 
 Jonathan Cameron <jic23@...nel.org>, David Lechner <dlechner@...libre.com>, 
 Andy Shevchenko <andy@...nel.org>, 
 Olivier Moysan <olivier.moysan@...s.st.com>
Cc: linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Tomas Melin <tomas.melin@...sala.com>
Subject: [PATCH v4 3/4] iio: adc: adi-axi-dac: define supported iio-backend
 capabilities

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 = {

-- 
2.47.3