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[84.72.156.211]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a4f009f9d6sm11890444f8f.84.2025.06.01.10.21.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Jun 2025 10:21:50 -0700 (PDT) From: Lothar Rubusch To: jic23@kernel.org, dlechner@baylibre.com, nuno.sa@analog.com, andy@kernel.org, corbet@lwn.net, lucas.p.stankus@gmail.com, lars@metafoo.de, Michael.Hennerich@analog.com, bagasdotme@gmail.com Cc: l.rubusch@gmail.com, linux-iio@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 02/11] iio: accel: adxl313: introduce channel buffer Date: Sun, 1 Jun 2025 17:21:30 +0000 Message-Id: <20250601172139.59156-3-l.rubusch@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250601172139.59156-1-l.rubusch@gmail.com> References: <20250601172139.59156-1-l.rubusch@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a scan_mask and scan_index to the iio channel. The scan_index prepares the buffer usage. According to the datasheet, the ADXL313 uses 13 bit in full resolution. Add signedness, storage bits and endianness. Signed-off-by: Lothar Rubusch --- drivers/iio/accel/adxl313_core.c | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_core.c index 2f26da5857d4..06a771bb4726 100644 --- a/drivers/iio/accel/adxl313_core.c +++ b/drivers/iio/accel/adxl313_core.c @@ -171,9 +171,10 @@ static const int adxl313_odr_freqs[][2] = { [9] = { 3200, 0 }, }; -#define ADXL313_ACCEL_CHANNEL(index, axis) { \ +#define ADXL313_ACCEL_CHANNEL(index, reg, axis) { \ .type = IIO_ACCEL, \ - .address = index, \ + .scan_index = (index), \ + .address = (reg), \ .modified = 1, \ .channel2 = IIO_MOD_##axis, \ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ @@ -183,14 +184,26 @@ static const int adxl313_odr_freqs[][2] = { .info_mask_shared_by_type_available = \ BIT(IIO_CHAN_INFO_SAMP_FREQ), \ .scan_type = { \ + .sign = 's', \ .realbits = 13, \ + .storagebits = 16, \ + .endianness = IIO_BE, \ }, \ } +enum adxl313_chans { + chan_x, chan_y, chan_z, +}; + static const struct iio_chan_spec adxl313_channels[] = { - ADXL313_ACCEL_CHANNEL(0, X), - ADXL313_ACCEL_CHANNEL(1, Y), - ADXL313_ACCEL_CHANNEL(2, Z), + ADXL313_ACCEL_CHANNEL(0, chan_x, X), + ADXL313_ACCEL_CHANNEL(1, chan_y, Y), + ADXL313_ACCEL_CHANNEL(2, chan_z, Z), +}; + +static const unsigned long adxl313_scan_masks[] = { + BIT(chan_x) | BIT(chan_y) | BIT(chan_z), + 0 }; static int adxl313_set_odr(struct adxl313_data *data, @@ -419,6 +432,7 @@ int adxl313_core_probe(struct device *dev, indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->channels = adxl313_channels; indio_dev->num_channels = ARRAY_SIZE(adxl313_channels); + indio_dev->available_scan_masks = adxl313_scan_masks; ret = adxl313_setup(dev, data, setup); if (ret) { -- 2.39.5