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Fri, 20 Jun 2025 15:21:38 -0700 (PDT) From: David Lechner Date: Fri, 20 Jun 2025 17:20:15 -0500 Subject: [PATCH 9/9] iio: adc: ad7173: add SPI offload support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20250620-iio-adc-ad7173-add-spi-offload-support-v1-9-0766f6297430@baylibre.com> References: <20250620-iio-adc-ad7173-add-spi-offload-support-v1-0-0766f6297430@baylibre.com> In-Reply-To: <20250620-iio-adc-ad7173-add-spi-offload-support-v1-0-0766f6297430@baylibre.com> To: Michael Hennerich , Jonathan Cameron , =?utf-8?q?Nuno_S=C3=A1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Mark Brown Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-spi@vger.kernel.org, David Lechner X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2110; 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The scan_type used for SPI offload is assuming that we are using the ad411x_ad717x HDL project [1] which always stores data words in 32-bits. Link: https://analogdevicesinc.github.io/hdl/projects/ad411x_ad717x/index.h= tml [1] Signed-off-by: David Lechner --- drivers/iio/adc/ad7173.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/iio/adc/ad7173.c b/drivers/iio/adc/ad7173.c index 010339c2b7044da4b36dc894a38a145c2fcccd6a..580d4bf3366b193fa0f13d0a288= 86d390e1295b8 100644 --- a/drivers/iio/adc/ad7173.c +++ b/drivers/iio/adc/ad7173.c @@ -748,6 +748,7 @@ static const struct ad_sigma_delta_info ad7173_sigma_de= lta_info_4_slots =3D { .set_mode =3D ad7173_set_mode, .has_registers =3D true, .has_named_irqs =3D true, + .supports_spi_offload =3D true, .addr_shift =3D 0, .read_mask =3D BIT(6), .status_ch_mask =3D GENMASK(3, 0), @@ -764,6 +765,7 @@ static const struct ad_sigma_delta_info ad7173_sigma_de= lta_info_8_slots =3D { .set_mode =3D ad7173_set_mode, .has_registers =3D true, .has_named_irqs =3D true, + .supports_spi_offload =3D true, .addr_shift =3D 0, .read_mask =3D BIT(6), .status_ch_mask =3D GENMASK(3, 0), @@ -1585,6 +1587,11 @@ static int ad7173_fw_parse_channel_config(struct iio= _dev *indio_dev) if (st->info->data_reg_only_16bit) chan_arr[chan_index].scan_type =3D ad4113_scan_type; =20 + if (ad_sigma_delta_has_spi_offload(&st->sd)) { + chan_arr[chan_index].scan_type.storagebits =3D 32; + chan_arr[chan_index].scan_type.endianness =3D IIO_CPU; + } + chan_index++; } =20 @@ -1675,6 +1682,12 @@ static int ad7173_fw_parse_channel_config(struct iio= _dev *indio_dev) if (st->info->data_reg_only_16bit) chan_arr[chan_index].scan_type =3D ad4113_scan_type; =20 + /* Assuming SPI offload is ad411x_ad717x HDL project. */ + if (ad_sigma_delta_has_spi_offload(&st->sd)) { + chan_arr[chan_index].scan_type.storagebits =3D 32; + chan_arr[chan_index].scan_type.endianness =3D IIO_CPU; + } + chan_index++; } return 0; --=20 2.43.0