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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/iio/accel/st_accel_buffer.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/iio/accel/st_accel_buffer.c')
-rw-r--r-- | drivers/iio/accel/st_accel_buffer.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/iio/accel/st_accel_buffer.c b/drivers/iio/accel/st_accel_buffer.c new file mode 100644 index 000000000..b2977ae19 --- /dev/null +++ b/drivers/iio/accel/st_accel_buffer.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * STMicroelectronics accelerometers driver + * + * Copyright 2012-2013 STMicroelectronics Inc. + * + * Denis Ciocca <denis.ciocca@st.com> + */ + +#include <linux/kernel.h> +#include <linux/iio/iio.h> +#include <linux/iio/buffer.h> +#include <linux/iio/trigger.h> +#include <linux/iio/triggered_buffer.h> + +#include <linux/iio/common/st_sensors.h> +#include "st_accel.h" + +int st_accel_trig_set_state(struct iio_trigger *trig, bool state) +{ + struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); + + return st_sensors_set_dataready_irq(indio_dev, state); +} + +static int st_accel_buffer_postenable(struct iio_dev *indio_dev) +{ + int err; + + err = st_sensors_set_axis_enable(indio_dev, indio_dev->active_scan_mask[0]); + if (err < 0) + return err; + + err = st_sensors_set_enable(indio_dev, true); + if (err < 0) + goto st_accel_buffer_enable_all_axis; + + return 0; + +st_accel_buffer_enable_all_axis: + st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS); + return err; +} + +static int st_accel_buffer_predisable(struct iio_dev *indio_dev) +{ + int err; + + err = st_sensors_set_enable(indio_dev, false); + if (err < 0) + return err; + + return st_sensors_set_axis_enable(indio_dev, + ST_SENSORS_ENABLE_ALL_AXIS); +} + +static const struct iio_buffer_setup_ops st_accel_buffer_setup_ops = { + .postenable = &st_accel_buffer_postenable, + .predisable = &st_accel_buffer_predisable, +}; + +int st_accel_allocate_ring(struct iio_dev *indio_dev) +{ + return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev, + NULL, &st_sensors_trigger_handler, &st_accel_buffer_setup_ops); +} |