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fda8d26e | 1 | // SPDX-License-Identifier: GPL-2.0-only |
7be56a8f DC |
2 | /* |
3 | * STMicroelectronics gyroscopes driver | |
4 | * | |
5 | * Copyright 2012-2013 STMicroelectronics Inc. | |
6 | * | |
7 | * Denis Ciocca <denis.ciocca@st.com> | |
7be56a8f DC |
8 | */ |
9 | ||
7be56a8f | 10 | #include <linux/kernel.h> |
7be56a8f DC |
11 | #include <linux/iio/iio.h> |
12 | #include <linux/iio/buffer.h> | |
9c6cd755 | 13 | #include <linux/iio/trigger.h> |
7be56a8f DC |
14 | #include <linux/iio/triggered_buffer.h> |
15 | ||
16 | #include <linux/iio/common/st_sensors.h> | |
17 | #include "st_gyro.h" | |
18 | ||
19 | int st_gyro_trig_set_state(struct iio_trigger *trig, bool state) | |
20 | { | |
1e9663c6 | 21 | struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); |
7be56a8f DC |
22 | |
23 | return st_sensors_set_dataready_irq(indio_dev, state); | |
24 | } | |
25 | ||
7be56a8f DC |
26 | static int st_gyro_buffer_postenable(struct iio_dev *indio_dev) |
27 | { | |
21b1ee31 | 28 | int err; |
7be56a8f | 29 | |
1f38527d | 30 | err = st_sensors_set_axis_enable(indio_dev, indio_dev->active_scan_mask[0]); |
7be56a8f | 31 | if (err < 0) |
f11d59d8 | 32 | return err; |
7be56a8f | 33 | |
21b1ee31 | 34 | err = st_sensors_set_enable(indio_dev, true); |
7be56a8f | 35 | if (err < 0) |
21b1ee31 | 36 | goto st_gyro_buffer_enable_all_axis; |
7be56a8f | 37 | |
21b1ee31 | 38 | return 0; |
7be56a8f | 39 | |
21b1ee31 DC |
40 | st_gyro_buffer_enable_all_axis: |
41 | st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS); | |
7be56a8f DC |
42 | return err; |
43 | } | |
44 | ||
45 | static int st_gyro_buffer_predisable(struct iio_dev *indio_dev) | |
46 | { | |
f11d59d8 | 47 | int err; |
7be56a8f | 48 | |
21b1ee31 | 49 | err = st_sensors_set_enable(indio_dev, false); |
7be56a8f | 50 | if (err < 0) |
f11d59d8 | 51 | return err; |
7be56a8f | 52 | |
f11d59d8 | 53 | return st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS); |
7be56a8f DC |
54 | } |
55 | ||
56 | static const struct iio_buffer_setup_ops st_gyro_buffer_setup_ops = { | |
7be56a8f DC |
57 | .postenable = &st_gyro_buffer_postenable, |
58 | .predisable = &st_gyro_buffer_predisable, | |
59 | }; | |
60 | ||
61 | int st_gyro_allocate_ring(struct iio_dev *indio_dev) | |
62 | { | |
a574e68f AA |
63 | return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev, |
64 | NULL, &st_sensors_trigger_handler, &st_gyro_buffer_setup_ops); | |
7be56a8f DC |
65 | } |
66 |