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80 lines
1.9 KiB
80 lines
1.9 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* STMicroelectronics gyroscopes driver |
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* |
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* Copyright 2012-2013 STMicroelectronics Inc. |
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* |
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* Denis Ciocca <[email protected]> |
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*/ |
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/slab.h> |
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#include <linux/stat.h> |
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#include <linux/interrupt.h> |
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#include <linux/i2c.h> |
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#include <linux/delay.h> |
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#include <linux/iio/iio.h> |
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#include <linux/iio/buffer.h> |
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#include <linux/iio/trigger_consumer.h> |
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#include <linux/iio/triggered_buffer.h> |
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#include <linux/iio/common/st_sensors.h> |
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#include "st_gyro.h" |
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int st_gyro_trig_set_state(struct iio_trigger *trig, bool state) |
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{ |
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struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
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return st_sensors_set_dataready_irq(indio_dev, state); |
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} |
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static int st_gyro_buffer_postenable(struct iio_dev *indio_dev) |
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{ |
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int err; |
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err = st_sensors_set_axis_enable(indio_dev, indio_dev->active_scan_mask[0]); |
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if (err < 0) |
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return err; |
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err = st_sensors_set_enable(indio_dev, true); |
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if (err < 0) |
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goto st_gyro_buffer_enable_all_axis; |
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return 0; |
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st_gyro_buffer_enable_all_axis: |
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st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS); |
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return err; |
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} |
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static int st_gyro_buffer_predisable(struct iio_dev *indio_dev) |
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{ |
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int err; |
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err = st_sensors_set_enable(indio_dev, false); |
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if (err < 0) |
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return err; |
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return st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS); |
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} |
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static const struct iio_buffer_setup_ops st_gyro_buffer_setup_ops = { |
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.postenable = &st_gyro_buffer_postenable, |
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.predisable = &st_gyro_buffer_predisable, |
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}; |
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int st_gyro_allocate_ring(struct iio_dev *indio_dev) |
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{ |
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return iio_triggered_buffer_setup(indio_dev, NULL, |
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&st_sensors_trigger_handler, &st_gyro_buffer_setup_ops); |
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} |
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void st_gyro_deallocate_ring(struct iio_dev *indio_dev) |
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{ |
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iio_triggered_buffer_cleanup(indio_dev); |
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} |
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MODULE_AUTHOR("Denis Ciocca <[email protected]>"); |
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MODULE_DESCRIPTION("STMicroelectronics gyroscopes buffer"); |
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MODULE_LICENSE("GPL v2");
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