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Tue, 01 Jul 2025 14:39:43 -0700 (PDT) From: David Lechner Date: Tue, 01 Jul 2025 16:38:00 -0500 Subject: [PATCH v3 12/12] 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: <20250701-iio-adc-ad7173-add-spi-offload-support-v3-12-42abb83e3dac@baylibre.com> References: <20250701-iio-adc-ad7173-add-spi-offload-support-v3-0-42abb83e3dac@baylibre.com> In-Reply-To: <20250701-iio-adc-ad7173-add-spi-offload-support-v3-0-42abb83e3dac@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; i=dlechner@baylibre.com; h=from:subject:message-id; bh=x4deODr2J/B/ZfZk3+/1/BV8bYxvy5G2y6ggy6cAeUc=; b=owEBbQGS/pANAwAKAcLMIAH/AY/AAcsmYgBoZFWKFauMI32n+rVJ4X53stwAqiiUvPd+u9cFp uvVIaRAIL+JATMEAAEKAB0WIQTsGNmeYg6D1pzYaJjCzCAB/wGPwAUCaGRVigAKCRDCzCAB/wGP wE4UCACbCLWfN9b147eeF/3FnSESrviOzb6Fu37NJlnlvMpDCeG1q6ArK8xrmF+fw25/vektB7i h24Bm6GTgyEVq+Q0MOPABO9fDJL2uSWaRuVrRrqVr/I9AbRWr5dIfxqQJGtMT/VYQwGAMcVp3h3 BKUeRv4tRjoETflevaU6psSJMOPzxt3XW7qTSYHuoYAZgWKFvqj9OJqtXTPaBmFuhtx83Jf7WCm sjQKKjGVOsn+yZ7Rzlpy34BGCYtFC/SsI1QHMxSe2idYDvGQZlJE5f7SFF9BNCb0VPGmd9A3Rah SAjh5D/znRiJRVMB4W6hFq60UKW28JwAD9k7EOd0B3ZEBd/b X-Developer-Key: i=dlechner@baylibre.com; a=openpgp; fpr=8A73D82A6A1F509907F373881F8AF88C82F77C03 Enable SPI offload support for the AD7173 ADC driver. 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