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674db1e921
The st_press_allocate_ring() function calls iio_triggered_buffer_setup() to allocate a triggered buffer. But the same can be done with devm_iio_triggered_buffer_setup() and then the st_press_common_remove() no longer needs to manually deallocate it. We know that the parent of the IIO device is used to manage other instances of the devm unwind, so it can be used in the st_press_allocate_ring() as well. Signed-off-by: Alexandru Ardelean <aardelean@deviqon.com> Link: https://lore.kernel.org/r/20210720074642.223293-1-aardelean@deviqon.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
56 lines
1.3 KiB
C
56 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* STMicroelectronics pressures driver
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*
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* Copyright 2013 STMicroelectronics Inc.
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*
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* Denis Ciocca <denis.ciocca@st.com>
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* v. 1.0.0
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*/
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#ifndef ST_PRESS_H
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#define ST_PRESS_H
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#include <linux/types.h>
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#include <linux/iio/common/st_sensors.h>
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enum st_press_type {
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LPS001WP,
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LPS25H,
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LPS331AP,
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LPS22HB,
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LPS33HW,
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LPS35HW,
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LPS22HH,
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ST_PRESS_MAX,
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};
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#define LPS001WP_PRESS_DEV_NAME "lps001wp"
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#define LPS25H_PRESS_DEV_NAME "lps25h"
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#define LPS331AP_PRESS_DEV_NAME "lps331ap"
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#define LPS22HB_PRESS_DEV_NAME "lps22hb"
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#define LPS33HW_PRESS_DEV_NAME "lps33hw"
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#define LPS35HW_PRESS_DEV_NAME "lps35hw"
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#define LPS22HH_PRESS_DEV_NAME "lps22hh"
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/**
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* struct st_sensors_platform_data - default press platform data
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* @drdy_int_pin: default press DRDY is available on INT1 pin.
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*/
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static __maybe_unused const struct st_sensors_platform_data default_press_pdata = {
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.drdy_int_pin = 1,
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};
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#ifdef CONFIG_IIO_BUFFER
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int st_press_allocate_ring(struct iio_dev *indio_dev);
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int st_press_trig_set_state(struct iio_trigger *trig, bool state);
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#define ST_PRESS_TRIGGER_SET_STATE (&st_press_trig_set_state)
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#else /* CONFIG_IIO_BUFFER */
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static inline int st_press_allocate_ring(struct iio_dev *indio_dev)
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{
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return 0;
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}
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#define ST_PRESS_TRIGGER_SET_STATE NULL
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#endif /* CONFIG_IIO_BUFFER */
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#endif /* ST_PRESS_H */
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