v4.19.13 snapshot.
diff --git a/include/linux/iio/accel/kxcjk_1013.h b/include/linux/iio/accel/kxcjk_1013.h
new file mode 100644
index 0000000..fd1d540
--- /dev/null
+++ b/include/linux/iio/accel/kxcjk_1013.h
@@ -0,0 +1,22 @@
+/*
+ * KXCJK-1013 3-axis accelerometer Interface
+ * Copyright (c) 2014, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef __IIO_KXCJK_1013_H__
+#define __IIO_KXCJK_1013_H__
+
+struct kxcjk_1013_platform_data {
+ bool active_high_intr;
+};
+
+#endif
diff --git a/include/linux/iio/adc/ad_sigma_delta.h b/include/linux/iio/adc/ad_sigma_delta.h
new file mode 100644
index 0000000..730ead1
--- /dev/null
+++ b/include/linux/iio/adc/ad_sigma_delta.h
@@ -0,0 +1,187 @@
+/*
+ * Support code for Analog Devices Sigma-Delta ADCs
+ *
+ * Copyright 2012 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2.
+ */
+#ifndef __AD_SIGMA_DELTA_H__
+#define __AD_SIGMA_DELTA_H__
+
+enum ad_sigma_delta_mode {
+ AD_SD_MODE_CONTINUOUS = 0,
+ AD_SD_MODE_SINGLE = 1,
+ AD_SD_MODE_IDLE = 2,
+ AD_SD_MODE_POWERDOWN = 3,
+};
+
+/**
+ * struct ad_sigma_delta_calib_data - Calibration data for Sigma Delta devices
+ * @mode: Calibration mode.
+ * @channel: Calibration channel.
+ */
+struct ad_sd_calib_data {
+ unsigned int mode;
+ unsigned int channel;
+};
+
+struct ad_sigma_delta;
+struct iio_dev;
+
+/**
+ * struct ad_sigma_delta_info - Sigma Delta driver specific callbacks and options
+ * @set_channel: Will be called to select the current channel, may be NULL.
+ * @set_mode: Will be called to select the current mode, may be NULL.
+ * @postprocess_sample: Is called for each sampled data word, can be used to
+ * modify or drop the sample data, it, may be NULL.
+ * @has_registers: true if the device has writable and readable registers, false
+ * if there is just one read-only sample data shift register.
+ * @addr_shift: Shift of the register address in the communications register.
+ * @read_mask: Mask for the communications register having the read bit set.
+ */
+struct ad_sigma_delta_info {
+ int (*set_channel)(struct ad_sigma_delta *, unsigned int channel);
+ int (*set_mode)(struct ad_sigma_delta *, enum ad_sigma_delta_mode mode);
+ int (*postprocess_sample)(struct ad_sigma_delta *, unsigned int raw_sample);
+ bool has_registers;
+ unsigned int addr_shift;
+ unsigned int read_mask;
+};
+
+/**
+ * struct ad_sigma_delta - Sigma Delta device struct
+ * @spi: The spi device associated with the Sigma Delta device.
+ * @trig: The IIO trigger associated with the Sigma Delta device.
+ *
+ * Most of the fields are private to the sigma delta library code and should not
+ * be accessed by individual drivers.
+ */
+struct ad_sigma_delta {
+ struct spi_device *spi;
+ struct iio_trigger *trig;
+
+/* private: */
+ struct completion completion;
+ bool irq_dis;
+
+ bool bus_locked;
+
+ uint8_t comm;
+
+ const struct ad_sigma_delta_info *info;
+
+ /*
+ * DMA (thus cache coherency maintenance) requires the
+ * transfer buffers to live in their own cache lines.
+ */
+ uint8_t data[4] ____cacheline_aligned;
+};
+
+static inline int ad_sigma_delta_set_channel(struct ad_sigma_delta *sd,
+ unsigned int channel)
+{
+ if (sd->info->set_channel)
+ return sd->info->set_channel(sd, channel);
+
+ return 0;
+}
+
+static inline int ad_sigma_delta_set_mode(struct ad_sigma_delta *sd,
+ unsigned int mode)
+{
+ if (sd->info->set_mode)
+ return sd->info->set_mode(sd, mode);
+
+ return 0;
+}
+
+static inline int ad_sigma_delta_postprocess_sample(struct ad_sigma_delta *sd,
+ unsigned int raw_sample)
+{
+ if (sd->info->postprocess_sample)
+ return sd->info->postprocess_sample(sd, raw_sample);
+
+ return 0;
+}
+
+void ad_sd_set_comm(struct ad_sigma_delta *sigma_delta, uint8_t comm);
+int ad_sd_write_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,
+ unsigned int size, unsigned int val);
+int ad_sd_read_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,
+ unsigned int size, unsigned int *val);
+
+int ad_sd_reset(struct ad_sigma_delta *sigma_delta,
+ unsigned int reset_length);
+
+int ad_sigma_delta_single_conversion(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, int *val);
+int ad_sd_calibrate_all(struct ad_sigma_delta *sigma_delta,
+ const struct ad_sd_calib_data *cd, unsigned int n);
+int ad_sd_init(struct ad_sigma_delta *sigma_delta, struct iio_dev *indio_dev,
+ struct spi_device *spi, const struct ad_sigma_delta_info *info);
+
+int ad_sd_setup_buffer_and_trigger(struct iio_dev *indio_dev);
+void ad_sd_cleanup_buffer_and_trigger(struct iio_dev *indio_dev);
+
+int ad_sd_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig);
+
+#define __AD_SD_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift, _extend_name, _type, _mask_all) \
+ { \
+ .type = (_type), \
+ .differential = (_channel2 == -1 ? 0 : 1), \
+ .indexed = 1, \
+ .channel = (_channel1), \
+ .channel2 = (_channel2), \
+ .address = (_address), \
+ .extend_name = (_extend_name), \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_OFFSET), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .info_mask_shared_by_all = _mask_all, \
+ .scan_index = (_si), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (_bits), \
+ .storagebits = (_storagebits), \
+ .shift = (_shift), \
+ .endianness = IIO_BE, \
+ }, \
+ }
+
+#define AD_SD_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift) \
+ __AD_SD_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD_SD_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
+ _storagebits, _shift) \
+ __AD_SD_CHANNEL(_si, _channel, _channel, _address, _bits, \
+ _storagebits, _shift, "shorted", IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD_SD_CHANNEL(_si, _channel, _address, _bits, \
+ _storagebits, _shift) \
+ __AD_SD_CHANNEL(_si, _channel, -1, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD_SD_CHANNEL_NO_SAMP_FREQ(_si, _channel, _address, _bits, \
+ _storagebits, _shift) \
+ __AD_SD_CHANNEL(_si, _channel, -1, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_VOLTAGE, 0)
+
+#define AD_SD_TEMP_CHANNEL(_si, _address, _bits, _storagebits, _shift) \
+ __AD_SD_CHANNEL(_si, 0, -1, _address, _bits, \
+ _storagebits, _shift, NULL, IIO_TEMP, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD_SD_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \
+ _shift) \
+ __AD_SD_CHANNEL(_si, _channel, -1, _address, _bits, \
+ _storagebits, _shift, "supply", IIO_VOLTAGE, \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#endif
diff --git a/include/linux/iio/adc/stm32-dfsdm-adc.h b/include/linux/iio/adc/stm32-dfsdm-adc.h
new file mode 100644
index 0000000..0da298b
--- /dev/null
+++ b/include/linux/iio/adc/stm32-dfsdm-adc.h
@@ -0,0 +1,20 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This file discribe the STM32 DFSDM IIO driver API for audio part
+ *
+ * Copyright (C) 2017, STMicroelectronics - All Rights Reserved
+ * Author(s): Arnaud Pouliquen <arnaud.pouliquen@st.com>.
+ */
+
+#ifndef STM32_DFSDM_ADC_H
+#define STM32_DFSDM_ADC_H
+
+#include <linux/iio/iio.h>
+
+int stm32_dfsdm_get_buff_cb(struct iio_dev *iio_dev,
+ int (*cb)(const void *data, size_t size,
+ void *private),
+ void *private);
+int stm32_dfsdm_release_buff_cb(struct iio_dev *iio_dev);
+
+#endif
diff --git a/include/linux/iio/buffer-dma.h b/include/linux/iio/buffer-dma.h
new file mode 100644
index 0000000..67c7537
--- /dev/null
+++ b/include/linux/iio/buffer-dma.h
@@ -0,0 +1,152 @@
+/*
+ * Copyright 2013-2015 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef __INDUSTRIALIO_DMA_BUFFER_H__
+#define __INDUSTRIALIO_DMA_BUFFER_H__
+
+#include <linux/list.h>
+#include <linux/kref.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/iio/buffer.h>
+
+struct iio_dma_buffer_queue;
+struct iio_dma_buffer_ops;
+struct device;
+
+struct iio_buffer_block {
+ u32 size;
+ u32 bytes_used;
+};
+
+/**
+ * enum iio_block_state - State of a struct iio_dma_buffer_block
+ * @IIO_BLOCK_STATE_DEQUEUED: Block is not queued
+ * @IIO_BLOCK_STATE_QUEUED: Block is on the incoming queue
+ * @IIO_BLOCK_STATE_ACTIVE: Block is currently being processed by the DMA
+ * @IIO_BLOCK_STATE_DONE: Block is on the outgoing queue
+ * @IIO_BLOCK_STATE_DEAD: Block has been marked as to be freed
+ */
+enum iio_block_state {
+ IIO_BLOCK_STATE_DEQUEUED,
+ IIO_BLOCK_STATE_QUEUED,
+ IIO_BLOCK_STATE_ACTIVE,
+ IIO_BLOCK_STATE_DONE,
+ IIO_BLOCK_STATE_DEAD,
+};
+
+/**
+ * struct iio_dma_buffer_block - IIO buffer block
+ * @head: List head
+ * @size: Total size of the block in bytes
+ * @bytes_used: Number of bytes that contain valid data
+ * @vaddr: Virutal address of the blocks memory
+ * @phys_addr: Physical address of the blocks memory
+ * @queue: Parent DMA buffer queue
+ * @kref: kref used to manage the lifetime of block
+ * @state: Current state of the block
+ */
+struct iio_dma_buffer_block {
+ /* May only be accessed by the owner of the block */
+ struct list_head head;
+ size_t bytes_used;
+
+ /*
+ * Set during allocation, constant thereafter. May be accessed read-only
+ * by anybody holding a reference to the block.
+ */
+ void *vaddr;
+ dma_addr_t phys_addr;
+ size_t size;
+ struct iio_dma_buffer_queue *queue;
+
+ /* Must not be accessed outside the core. */
+ struct kref kref;
+ /*
+ * Must not be accessed outside the core. Access needs to hold
+ * queue->list_lock if the block is not owned by the core.
+ */
+ enum iio_block_state state;
+};
+
+/**
+ * struct iio_dma_buffer_queue_fileio - FileIO state for the DMA buffer
+ * @blocks: Buffer blocks used for fileio
+ * @active_block: Block being used in read()
+ * @pos: Read offset in the active block
+ * @block_size: Size of each block
+ */
+struct iio_dma_buffer_queue_fileio {
+ struct iio_dma_buffer_block *blocks[2];
+ struct iio_dma_buffer_block *active_block;
+ size_t pos;
+ size_t block_size;
+};
+
+/**
+ * struct iio_dma_buffer_queue - DMA buffer base structure
+ * @buffer: IIO buffer base structure
+ * @dev: Parent device
+ * @ops: DMA buffer callbacks
+ * @lock: Protects the incoming list, active and the fields in the fileio
+ * substruct
+ * @list_lock: Protects lists that contain blocks which can be modified in
+ * atomic context as well as blocks on those lists. This is the outgoing queue
+ * list and typically also a list of active blocks in the part that handles
+ * the DMA controller
+ * @incoming: List of buffers on the incoming queue
+ * @outgoing: List of buffers on the outgoing queue
+ * @active: Whether the buffer is currently active
+ * @fileio: FileIO state
+ */
+struct iio_dma_buffer_queue {
+ struct iio_buffer buffer;
+ struct device *dev;
+ const struct iio_dma_buffer_ops *ops;
+
+ struct mutex lock;
+ spinlock_t list_lock;
+ struct list_head incoming;
+ struct list_head outgoing;
+
+ bool active;
+
+ struct iio_dma_buffer_queue_fileio fileio;
+};
+
+/**
+ * struct iio_dma_buffer_ops - DMA buffer callback operations
+ * @submit: Called when a block is submitted to the DMA controller
+ * @abort: Should abort all pending transfers
+ */
+struct iio_dma_buffer_ops {
+ int (*submit)(struct iio_dma_buffer_queue *queue,
+ struct iio_dma_buffer_block *block);
+ void (*abort)(struct iio_dma_buffer_queue *queue);
+};
+
+void iio_dma_buffer_block_done(struct iio_dma_buffer_block *block);
+void iio_dma_buffer_block_list_abort(struct iio_dma_buffer_queue *queue,
+ struct list_head *list);
+
+int iio_dma_buffer_enable(struct iio_buffer *buffer,
+ struct iio_dev *indio_dev);
+int iio_dma_buffer_disable(struct iio_buffer *buffer,
+ struct iio_dev *indio_dev);
+int iio_dma_buffer_read(struct iio_buffer *buffer, size_t n,
+ char __user *user_buffer);
+size_t iio_dma_buffer_data_available(struct iio_buffer *buffer);
+int iio_dma_buffer_set_bytes_per_datum(struct iio_buffer *buffer, size_t bpd);
+int iio_dma_buffer_set_length(struct iio_buffer *buffer, unsigned int length);
+int iio_dma_buffer_request_update(struct iio_buffer *buffer);
+
+int iio_dma_buffer_init(struct iio_dma_buffer_queue *queue,
+ struct device *dma_dev, const struct iio_dma_buffer_ops *ops);
+void iio_dma_buffer_exit(struct iio_dma_buffer_queue *queue);
+void iio_dma_buffer_release(struct iio_dma_buffer_queue *queue);
+
+#endif
diff --git a/include/linux/iio/buffer-dmaengine.h b/include/linux/iio/buffer-dmaengine.h
new file mode 100644
index 0000000..5dcddf4
--- /dev/null
+++ b/include/linux/iio/buffer-dmaengine.h
@@ -0,0 +1,18 @@
+/*
+ * Copyright 2014-2015 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __IIO_DMAENGINE_H__
+#define __IIO_DMAENGINE_H__
+
+struct iio_buffer;
+struct device;
+
+struct iio_buffer *iio_dmaengine_buffer_alloc(struct device *dev,
+ const char *channel);
+void iio_dmaengine_buffer_free(struct iio_buffer *buffer);
+
+#endif
diff --git a/include/linux/iio/buffer.h b/include/linux/iio/buffer.h
new file mode 100644
index 0000000..48767c7
--- /dev/null
+++ b/include/linux/iio/buffer.h
@@ -0,0 +1,53 @@
+/* The industrial I/O core - generic buffer interfaces.
+ *
+ * Copyright (c) 2008 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef _IIO_BUFFER_GENERIC_H_
+#define _IIO_BUFFER_GENERIC_H_
+#include <linux/sysfs.h>
+#include <linux/iio/iio.h>
+
+struct iio_buffer;
+
+void iio_buffer_set_attrs(struct iio_buffer *buffer,
+ const struct attribute **attrs);
+
+int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data);
+
+/**
+ * iio_push_to_buffers_with_timestamp() - push data and timestamp to buffers
+ * @indio_dev: iio_dev structure for device.
+ * @data: sample data
+ * @timestamp: timestamp for the sample data
+ *
+ * Pushes data to the IIO device's buffers. If timestamps are enabled for the
+ * device the function will store the supplied timestamp as the last element in
+ * the sample data buffer before pushing it to the device buffers. The sample
+ * data buffer needs to be large enough to hold the additional timestamp
+ * (usually the buffer should be indio->scan_bytes bytes large).
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ */
+static inline int iio_push_to_buffers_with_timestamp(struct iio_dev *indio_dev,
+ void *data, int64_t timestamp)
+{
+ if (indio_dev->scan_timestamp) {
+ size_t ts_offset = indio_dev->scan_bytes / sizeof(int64_t) - 1;
+ ((int64_t *)data)[ts_offset] = timestamp;
+ }
+
+ return iio_push_to_buffers(indio_dev, data);
+}
+
+bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev,
+ const unsigned long *mask);
+
+void iio_device_attach_buffer(struct iio_dev *indio_dev,
+ struct iio_buffer *buffer);
+
+#endif /* _IIO_BUFFER_GENERIC_H_ */
diff --git a/include/linux/iio/buffer_impl.h b/include/linux/iio/buffer_impl.h
new file mode 100644
index 0000000..d1171db
--- /dev/null
+++ b/include/linux/iio/buffer_impl.h
@@ -0,0 +1,163 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _IIO_BUFFER_GENERIC_IMPL_H_
+#define _IIO_BUFFER_GENERIC_IMPL_H_
+#include <linux/sysfs.h>
+#include <linux/kref.h>
+
+#ifdef CONFIG_IIO_BUFFER
+
+struct iio_dev;
+struct iio_buffer;
+
+/**
+ * INDIO_BUFFER_FLAG_FIXED_WATERMARK - Watermark level of the buffer can not be
+ * configured. It has a fixed value which will be buffer specific.
+ */
+#define INDIO_BUFFER_FLAG_FIXED_WATERMARK BIT(0)
+
+/**
+ * struct iio_buffer_access_funcs - access functions for buffers.
+ * @store_to: actually store stuff to the buffer
+ * @read_first_n: try to get a specified number of bytes (must exist)
+ * @data_available: indicates how much data is available for reading from
+ * the buffer.
+ * @request_update: if a parameter change has been marked, update underlying
+ * storage.
+ * @set_bytes_per_datum:set number of bytes per datum
+ * @set_length: set number of datums in buffer
+ * @enable: called if the buffer is attached to a device and the
+ * device starts sampling. Calls are balanced with
+ * @disable.
+ * @disable: called if the buffer is attached to a device and the
+ * device stops sampling. Calles are balanced with @enable.
+ * @release: called when the last reference to the buffer is dropped,
+ * should free all resources allocated by the buffer.
+ * @modes: Supported operating modes by this buffer type
+ * @flags: A bitmask combination of INDIO_BUFFER_FLAG_*
+ *
+ * The purpose of this structure is to make the buffer element
+ * modular as event for a given driver, different usecases may require
+ * different buffer designs (space efficiency vs speed for example).
+ *
+ * It is worth noting that a given buffer implementation may only support a
+ * small proportion of these functions. The core code 'should' cope fine with
+ * any of them not existing.
+ **/
+struct iio_buffer_access_funcs {
+ int (*store_to)(struct iio_buffer *buffer, const void *data);
+ int (*read_first_n)(struct iio_buffer *buffer,
+ size_t n,
+ char __user *buf);
+ size_t (*data_available)(struct iio_buffer *buffer);
+
+ int (*request_update)(struct iio_buffer *buffer);
+
+ int (*set_bytes_per_datum)(struct iio_buffer *buffer, size_t bpd);
+ int (*set_length)(struct iio_buffer *buffer, unsigned int length);
+
+ int (*enable)(struct iio_buffer *buffer, struct iio_dev *indio_dev);
+ int (*disable)(struct iio_buffer *buffer, struct iio_dev *indio_dev);
+
+ void (*release)(struct iio_buffer *buffer);
+
+ unsigned int modes;
+ unsigned int flags;
+};
+
+/**
+ * struct iio_buffer - general buffer structure
+ *
+ * Note that the internals of this structure should only be of interest to
+ * those writing new buffer implementations.
+ */
+struct iio_buffer {
+ /** @length: Number of datums in buffer. */
+ unsigned int length;
+
+ /** @bytes_per_datum: Size of individual datum including timestamp. */
+ size_t bytes_per_datum;
+
+ /**
+ * @access: Buffer access functions associated with the
+ * implementation.
+ */
+ const struct iio_buffer_access_funcs *access;
+
+ /** @scan_mask: Bitmask used in masking scan mode elements. */
+ long *scan_mask;
+
+ /** @demux_list: List of operations required to demux the scan. */
+ struct list_head demux_list;
+
+ /** @pollq: Wait queue to allow for polling on the buffer. */
+ wait_queue_head_t pollq;
+
+ /** @watermark: Number of datums to wait for poll/read. */
+ unsigned int watermark;
+
+ /* private: */
+ /*
+ * @scan_el_attrs: Control of scan elements if that scan mode
+ * control method is used.
+ */
+ struct attribute_group *scan_el_attrs;
+
+ /* @scan_timestamp: Does the scan mode include a timestamp. */
+ bool scan_timestamp;
+
+ /* @scan_el_dev_attr_list: List of scan element related attributes. */
+ struct list_head scan_el_dev_attr_list;
+
+ /* @buffer_group: Attributes of the buffer group. */
+ struct attribute_group buffer_group;
+
+ /*
+ * @scan_el_group: Attribute group for those attributes not
+ * created from the iio_chan_info array.
+ */
+ struct attribute_group scan_el_group;
+
+ /* @stufftoread: Flag to indicate new data. */
+ bool stufftoread;
+
+ /* @attrs: Standard attributes of the buffer. */
+ const struct attribute **attrs;
+
+ /* @demux_bounce: Buffer for doing gather from incoming scan. */
+ void *demux_bounce;
+
+ /* @buffer_list: Entry in the devices list of current buffers. */
+ struct list_head buffer_list;
+
+ /* @ref: Reference count of the buffer. */
+ struct kref ref;
+};
+
+/**
+ * iio_update_buffers() - add or remove buffer from active list
+ * @indio_dev: device to add buffer to
+ * @insert_buffer: buffer to insert
+ * @remove_buffer: buffer_to_remove
+ *
+ * Note this will tear down the all buffering and build it up again
+ */
+int iio_update_buffers(struct iio_dev *indio_dev,
+ struct iio_buffer *insert_buffer,
+ struct iio_buffer *remove_buffer);
+
+/**
+ * iio_buffer_init() - Initialize the buffer structure
+ * @buffer: buffer to be initialized
+ **/
+void iio_buffer_init(struct iio_buffer *buffer);
+
+struct iio_buffer *iio_buffer_get(struct iio_buffer *buffer);
+void iio_buffer_put(struct iio_buffer *buffer);
+
+#else /* CONFIG_IIO_BUFFER */
+
+static inline void iio_buffer_get(struct iio_buffer *buffer) {}
+static inline void iio_buffer_put(struct iio_buffer *buffer) {}
+
+#endif /* CONFIG_IIO_BUFFER */
+#endif /* _IIO_BUFFER_GENERIC_IMPL_H_ */
diff --git a/include/linux/iio/common/cros_ec_sensors_core.h b/include/linux/iio/common/cros_ec_sensors_core.h
new file mode 100644
index 0000000..ce16445
--- /dev/null
+++ b/include/linux/iio/common/cros_ec_sensors_core.h
@@ -0,0 +1,180 @@
+/*
+ * ChromeOS EC sensor hub
+ *
+ * Copyright (C) 2016 Google, Inc
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __CROS_EC_SENSORS_CORE_H
+#define __CROS_EC_SENSORS_CORE_H
+
+#include <linux/iio/iio.h>
+#include <linux/irqreturn.h>
+#include <linux/mfd/cros_ec.h>
+
+enum {
+ CROS_EC_SENSOR_X,
+ CROS_EC_SENSOR_Y,
+ CROS_EC_SENSOR_Z,
+ CROS_EC_SENSOR_MAX_AXIS,
+};
+
+/* EC returns sensor values using signed 16 bit registers */
+#define CROS_EC_SENSOR_BITS 16
+
+/*
+ * 4 16 bit channels are allowed.
+ * Good enough for current sensors, they use up to 3 16 bit vectors.
+ */
+#define CROS_EC_SAMPLE_SIZE (sizeof(s64) * 2)
+
+/* Minimum sampling period to use when device is suspending */
+#define CROS_EC_MIN_SUSPEND_SAMPLING_FREQUENCY 1000 /* 1 second */
+
+/**
+ * struct cros_ec_sensors_core_state - state data for EC sensors IIO driver
+ * @ec: cros EC device structure
+ * @cmd_lock: lock used to prevent simultaneous access to the
+ * commands.
+ * @msg: cros EC command structure
+ * @param: motion sensor parameters structure
+ * @resp: motion sensor response structure
+ * @type: type of motion sensor
+ * @loc: location where the motion sensor is placed
+ * @calib: calibration parameters. Note that trigger
+ * captured data will always provide the calibrated
+ * data
+ * @samples: static array to hold data from a single capture.
+ * For each channel we need 2 bytes, except for
+ * the timestamp. The timestamp is always last and
+ * is always 8-byte aligned.
+ * @read_ec_sensors_data: function used for accessing sensors values
+ * @cuur_sampl_freq: current sampling period
+ */
+struct cros_ec_sensors_core_state {
+ struct cros_ec_device *ec;
+ struct mutex cmd_lock;
+
+ struct cros_ec_command *msg;
+ struct ec_params_motion_sense param;
+ struct ec_response_motion_sense *resp;
+
+ enum motionsensor_type type;
+ enum motionsensor_location loc;
+
+ s16 calib[CROS_EC_SENSOR_MAX_AXIS];
+
+ u8 samples[CROS_EC_SAMPLE_SIZE];
+
+ int (*read_ec_sensors_data)(struct iio_dev *indio_dev,
+ unsigned long scan_mask, s16 *data);
+
+ int curr_sampl_freq;
+};
+
+/**
+ * cros_ec_sensors_read_lpc() - retrieve data from EC shared memory
+ * @indio_dev: pointer to IIO device
+ * @scan_mask: bitmap of the sensor indices to scan
+ * @data: location to store data
+ *
+ * This is the safe function for reading the EC data. It guarantees that the
+ * data sampled was not modified by the EC while being read.
+ *
+ * Return: 0 on success, -errno on failure.
+ */
+int cros_ec_sensors_read_lpc(struct iio_dev *indio_dev, unsigned long scan_mask,
+ s16 *data);
+
+/**
+ * cros_ec_sensors_read_cmd() - retrieve data using the EC command protocol
+ * @indio_dev: pointer to IIO device
+ * @scan_mask: bitmap of the sensor indices to scan
+ * @data: location to store data
+ *
+ * Return: 0 on success, -errno on failure.
+ */
+int cros_ec_sensors_read_cmd(struct iio_dev *indio_dev, unsigned long scan_mask,
+ s16 *data);
+
+struct platform_device;
+/**
+ * cros_ec_sensors_core_init() - basic initialization of the core structure
+ * @pdev: platform device created for the sensors
+ * @indio_dev: iio device structure of the device
+ * @physical_device: true if the device refers to a physical device
+ *
+ * Return: 0 on success, -errno on failure.
+ */
+int cros_ec_sensors_core_init(struct platform_device *pdev,
+ struct iio_dev *indio_dev, bool physical_device);
+
+/**
+ * cros_ec_sensors_capture() - the trigger handler function
+ * @irq: the interrupt number.
+ * @p: a pointer to the poll function.
+ *
+ * On a trigger event occurring, if the pollfunc is attached then this
+ * handler is called as a threaded interrupt (and hence may sleep). It
+ * is responsible for grabbing data from the device and pushing it into
+ * the associated buffer.
+ *
+ * Return: IRQ_HANDLED
+ */
+irqreturn_t cros_ec_sensors_capture(int irq, void *p);
+
+/**
+ * cros_ec_motion_send_host_cmd() - send motion sense host command
+ * @st: pointer to state information for device
+ * @opt_length: optional length to reduce the response size, useful on the data
+ * path. Otherwise, the maximal allowed response size is used
+ *
+ * When called, the sub-command is assumed to be set in param->cmd.
+ *
+ * Return: 0 on success, -errno on failure.
+ */
+int cros_ec_motion_send_host_cmd(struct cros_ec_sensors_core_state *st,
+ u16 opt_length);
+
+/**
+ * cros_ec_sensors_core_read() - function to request a value from the sensor
+ * @st: pointer to state information for device
+ * @chan: channel specification structure table
+ * @val: will contain one element making up the returned value
+ * @val2: will contain another element making up the returned value
+ * @mask: specifies which values to be requested
+ *
+ * Return: the type of value returned by the device
+ */
+int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st,
+ struct iio_chan_spec const *chan,
+ int *val, int *val2, long mask);
+
+/**
+ * cros_ec_sensors_core_write() - function to write a value to the sensor
+ * @st: pointer to state information for device
+ * @chan: channel specification structure table
+ * @val: first part of value to write
+ * @val2: second part of value to write
+ * @mask: specifies which values to write
+ *
+ * Return: the type of value returned by the device
+ */
+int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st,
+ struct iio_chan_spec const *chan,
+ int val, int val2, long mask);
+
+extern const struct dev_pm_ops cros_ec_sensors_pm_ops;
+
+/* List of extended channel specification for all sensors */
+extern const struct iio_chan_spec_ext_info cros_ec_sensors_ext_info[];
+
+#endif /* __CROS_EC_SENSORS_CORE_H */
diff --git a/include/linux/iio/common/ssp_sensors.h b/include/linux/iio/common/ssp_sensors.h
new file mode 100644
index 0000000..f4d1b0e
--- /dev/null
+++ b/include/linux/iio/common/ssp_sensors.h
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2014, Samsung Electronics Co. Ltd. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+#ifndef _SSP_SENSORS_H_
+#define _SSP_SENSORS_H_
+
+#include <linux/iio/iio.h>
+
+#define SSP_TIME_SIZE 4
+#define SSP_ACCELEROMETER_SIZE 6
+#define SSP_GYROSCOPE_SIZE 6
+#define SSP_BIO_HRM_RAW_SIZE 8
+#define SSP_BIO_HRM_RAW_FAC_SIZE 36
+#define SSP_BIO_HRM_LIB_SIZE 8
+
+/**
+ * enum ssp_sensor_type - SSP sensor type
+ */
+enum ssp_sensor_type {
+ SSP_ACCELEROMETER_SENSOR = 0,
+ SSP_GYROSCOPE_SENSOR,
+ SSP_GEOMAGNETIC_UNCALIB_SENSOR,
+ SSP_GEOMAGNETIC_RAW,
+ SSP_GEOMAGNETIC_SENSOR,
+ SSP_PRESSURE_SENSOR,
+ SSP_GESTURE_SENSOR,
+ SSP_PROXIMITY_SENSOR,
+ SSP_TEMPERATURE_HUMIDITY_SENSOR,
+ SSP_LIGHT_SENSOR,
+ SSP_PROXIMITY_RAW,
+ SSP_ORIENTATION_SENSOR,
+ SSP_STEP_DETECTOR,
+ SSP_SIG_MOTION_SENSOR,
+ SSP_GYRO_UNCALIB_SENSOR,
+ SSP_GAME_ROTATION_VECTOR,
+ SSP_ROTATION_VECTOR,
+ SSP_STEP_COUNTER,
+ SSP_BIO_HRM_RAW,
+ SSP_BIO_HRM_RAW_FAC,
+ SSP_BIO_HRM_LIB,
+ SSP_SENSOR_MAX,
+};
+
+struct ssp_data;
+
+/**
+ * struct ssp_sensor_data - Sensor object
+ * @process_data: Callback to feed sensor data.
+ * @type: Used sensor type.
+ * @buffer: Received data buffer.
+ */
+struct ssp_sensor_data {
+ int (*process_data)(struct iio_dev *indio_dev, void *buf,
+ int64_t timestamp);
+ enum ssp_sensor_type type;
+ u8 *buffer;
+};
+
+void ssp_register_consumer(struct iio_dev *indio_dev,
+ enum ssp_sensor_type type);
+
+int ssp_enable_sensor(struct ssp_data *data, enum ssp_sensor_type type,
+ u32 delay);
+
+int ssp_disable_sensor(struct ssp_data *data, enum ssp_sensor_type type);
+
+u32 ssp_get_sensor_delay(struct ssp_data *data, enum ssp_sensor_type);
+
+int ssp_change_delay(struct ssp_data *data, enum ssp_sensor_type type,
+ u32 delay);
+#endif /* _SSP_SENSORS_H_ */
diff --git a/include/linux/iio/common/st_sensors.h b/include/linux/iio/common/st_sensors.h
new file mode 100644
index 0000000..f9bd6e8
--- /dev/null
+++ b/include/linux/iio/common/st_sensors.h
@@ -0,0 +1,358 @@
+/*
+ * STMicroelectronics sensors library driver
+ *
+ * Copyright 2012-2013 STMicroelectronics Inc.
+ *
+ * Denis Ciocca <denis.ciocca@st.com>
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef ST_SENSORS_H
+#define ST_SENSORS_H
+
+#include <linux/i2c.h>
+#include <linux/spi/spi.h>
+#include <linux/irqreturn.h>
+#include <linux/iio/trigger.h>
+#include <linux/bitops.h>
+#include <linux/regulator/consumer.h>
+
+#include <linux/platform_data/st_sensors_pdata.h>
+
+#define ST_SENSORS_TX_MAX_LENGTH 2
+#define ST_SENSORS_RX_MAX_LENGTH 6
+
+#define ST_SENSORS_ODR_LIST_MAX 10
+#define ST_SENSORS_FULLSCALE_AVL_MAX 10
+
+#define ST_SENSORS_NUMBER_ALL_CHANNELS 4
+#define ST_SENSORS_ENABLE_ALL_AXIS 0x07
+#define ST_SENSORS_SCAN_X 0
+#define ST_SENSORS_SCAN_Y 1
+#define ST_SENSORS_SCAN_Z 2
+#define ST_SENSORS_DEFAULT_POWER_ON_VALUE 0x01
+#define ST_SENSORS_DEFAULT_POWER_OFF_VALUE 0x00
+#define ST_SENSORS_DEFAULT_WAI_ADDRESS 0x0f
+#define ST_SENSORS_DEFAULT_AXIS_ADDR 0x20
+#define ST_SENSORS_DEFAULT_AXIS_MASK 0x07
+#define ST_SENSORS_DEFAULT_AXIS_N_BIT 3
+#define ST_SENSORS_DEFAULT_STAT_ADDR 0x27
+
+#define ST_SENSORS_MAX_NAME 17
+#define ST_SENSORS_MAX_4WAI 7
+
+#define ST_SENSORS_LSM_CHANNELS(device_type, mask, index, mod, \
+ ch2, s, endian, rbits, sbits, addr) \
+{ \
+ .type = device_type, \
+ .modified = mod, \
+ .info_mask_separate = mask, \
+ .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+ .scan_index = index, \
+ .channel2 = ch2, \
+ .address = addr, \
+ .scan_type = { \
+ .sign = s, \
+ .realbits = rbits, \
+ .shift = sbits - rbits, \
+ .storagebits = sbits, \
+ .endianness = endian, \
+ }, \
+}
+
+#define ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL() \
+ IIO_DEV_ATTR_SAMP_FREQ_AVAIL( \
+ st_sensors_sysfs_sampling_frequency_avail)
+
+#define ST_SENSORS_DEV_ATTR_SCALE_AVAIL(name) \
+ IIO_DEVICE_ATTR(name, S_IRUGO, \
+ st_sensors_sysfs_scale_avail, NULL , 0);
+
+struct st_sensor_odr_avl {
+ unsigned int hz;
+ u8 value;
+};
+
+struct st_sensor_odr {
+ u8 addr;
+ u8 mask;
+ struct st_sensor_odr_avl odr_avl[ST_SENSORS_ODR_LIST_MAX];
+};
+
+struct st_sensor_power {
+ u8 addr;
+ u8 mask;
+ u8 value_off;
+ u8 value_on;
+};
+
+struct st_sensor_axis {
+ u8 addr;
+ u8 mask;
+};
+
+struct st_sensor_fullscale_avl {
+ unsigned int num;
+ u8 value;
+ unsigned int gain;
+ unsigned int gain2;
+};
+
+struct st_sensor_fullscale {
+ u8 addr;
+ u8 mask;
+ struct st_sensor_fullscale_avl fs_avl[ST_SENSORS_FULLSCALE_AVL_MAX];
+};
+
+struct st_sensor_sim {
+ u8 addr;
+ u8 value;
+};
+
+/**
+ * struct st_sensor_bdu - ST sensor device block data update
+ * @addr: address of the register.
+ * @mask: mask to write the block data update flag.
+ */
+struct st_sensor_bdu {
+ u8 addr;
+ u8 mask;
+};
+
+/**
+ * struct st_sensor_das - ST sensor device data alignment selection
+ * @addr: address of the register.
+ * @mask: mask to write the das flag for left alignment.
+ */
+struct st_sensor_das {
+ u8 addr;
+ u8 mask;
+};
+
+/**
+ * struct st_sensor_int_drdy - ST sensor device drdy line parameters
+ * @addr: address of INT drdy register.
+ * @mask: mask to enable drdy line.
+ * @addr_od: address to enable/disable Open Drain on the INT line.
+ * @mask_od: mask to enable/disable Open Drain on the INT line.
+ */
+struct st_sensor_int_drdy {
+ u8 addr;
+ u8 mask;
+ u8 addr_od;
+ u8 mask_od;
+};
+
+/**
+ * struct st_sensor_data_ready_irq - ST sensor device data-ready interrupt
+ * struct int1 - data-ready configuration register for INT1 pin.
+ * struct int2 - data-ready configuration register for INT2 pin.
+ * @addr_ihl: address to enable/disable active low on the INT lines.
+ * @mask_ihl: mask to enable/disable active low on the INT lines.
+ * struct stat_drdy - status register of DRDY (data ready) interrupt.
+ * struct ig1 - represents the Interrupt Generator 1 of sensors.
+ * @en_addr: address of the enable ig1 register.
+ * @en_mask: mask to write the on/off value for enable.
+ */
+struct st_sensor_data_ready_irq {
+ struct st_sensor_int_drdy int1;
+ struct st_sensor_int_drdy int2;
+ u8 addr_ihl;
+ u8 mask_ihl;
+ struct {
+ u8 addr;
+ u8 mask;
+ } stat_drdy;
+ struct {
+ u8 en_addr;
+ u8 en_mask;
+ } ig1;
+};
+
+/**
+ * struct st_sensor_transfer_buffer - ST sensor device I/O buffer
+ * @buf_lock: Mutex to protect rx and tx buffers.
+ * @tx_buf: Buffer used by SPI transfer function to send data to the sensors.
+ * This buffer is used to avoid DMA not-aligned issue.
+ * @rx_buf: Buffer used by SPI transfer to receive data from sensors.
+ * This buffer is used to avoid DMA not-aligned issue.
+ */
+struct st_sensor_transfer_buffer {
+ struct mutex buf_lock;
+ u8 rx_buf[ST_SENSORS_RX_MAX_LENGTH];
+ u8 tx_buf[ST_SENSORS_TX_MAX_LENGTH] ____cacheline_aligned;
+};
+
+/**
+ * struct st_sensor_transfer_function - ST sensor device I/O function
+ * @read_byte: Function used to read one byte.
+ * @write_byte: Function used to write one byte.
+ * @read_multiple_byte: Function used to read multiple byte.
+ */
+struct st_sensor_transfer_function {
+ int (*read_byte) (struct st_sensor_transfer_buffer *tb,
+ struct device *dev, u8 reg_addr, u8 *res_byte);
+ int (*write_byte) (struct st_sensor_transfer_buffer *tb,
+ struct device *dev, u8 reg_addr, u8 data);
+ int (*read_multiple_byte) (struct st_sensor_transfer_buffer *tb,
+ struct device *dev, u8 reg_addr, int len, u8 *data,
+ bool multiread_bit);
+};
+
+/**
+ * struct st_sensor_settings - ST specific sensor settings
+ * @wai: Contents of WhoAmI register.
+ * @wai_addr: The address of WhoAmI register.
+ * @sensors_supported: List of supported sensors by struct itself.
+ * @ch: IIO channels for the sensor.
+ * @odr: Output data rate register and ODR list available.
+ * @pw: Power register of the sensor.
+ * @enable_axis: Enable one or more axis of the sensor.
+ * @fs: Full scale register and full scale list available.
+ * @bdu: Block data update register.
+ * @das: Data Alignment Selection register.
+ * @drdy_irq: Data ready register of the sensor.
+ * @sim: SPI serial interface mode register of the sensor.
+ * @multi_read_bit: Use or not particular bit for [I2C/SPI] multi-read.
+ * @bootime: samples to discard when sensor passing from power-down to power-up.
+ */
+struct st_sensor_settings {
+ u8 wai;
+ u8 wai_addr;
+ char sensors_supported[ST_SENSORS_MAX_4WAI][ST_SENSORS_MAX_NAME];
+ struct iio_chan_spec *ch;
+ int num_ch;
+ struct st_sensor_odr odr;
+ struct st_sensor_power pw;
+ struct st_sensor_axis enable_axis;
+ struct st_sensor_fullscale fs;
+ struct st_sensor_bdu bdu;
+ struct st_sensor_das das;
+ struct st_sensor_data_ready_irq drdy_irq;
+ struct st_sensor_sim sim;
+ bool multi_read_bit;
+ unsigned int bootime;
+};
+
+/**
+ * struct st_sensor_data - ST sensor device status
+ * @dev: Pointer to instance of struct device (I2C or SPI).
+ * @trig: The trigger in use by the core driver.
+ * @sensor_settings: Pointer to the specific sensor settings in use.
+ * @current_fullscale: Maximum range of measure by the sensor.
+ * @vdd: Pointer to sensor's Vdd power supply
+ * @vdd_io: Pointer to sensor's Vdd-IO power supply
+ * @enabled: Status of the sensor (false->off, true->on).
+ * @multiread_bit: Use or not particular bit for [I2C/SPI] multiread.
+ * @buffer_data: Data used by buffer part.
+ * @odr: Output data rate of the sensor [Hz].
+ * num_data_channels: Number of data channels used in buffer.
+ * @drdy_int_pin: Redirect DRDY on pin 1 (1) or pin 2 (2).
+ * @int_pin_open_drain: Set the interrupt/DRDY to open drain.
+ * @get_irq_data_ready: Function to get the IRQ used for data ready signal.
+ * @tf: Transfer function structure used by I/O operations.
+ * @tb: Transfer buffers and mutex used by I/O operations.
+ * @edge_irq: the IRQ triggers on edges and need special handling.
+ * @hw_irq_trigger: if we're using the hardware interrupt on the sensor.
+ * @hw_timestamp: Latest timestamp from the interrupt handler, when in use.
+ */
+struct st_sensor_data {
+ struct device *dev;
+ struct iio_trigger *trig;
+ struct st_sensor_settings *sensor_settings;
+ struct st_sensor_fullscale_avl *current_fullscale;
+ struct regulator *vdd;
+ struct regulator *vdd_io;
+
+ bool enabled;
+ bool multiread_bit;
+
+ char *buffer_data;
+
+ unsigned int odr;
+ unsigned int num_data_channels;
+
+ u8 drdy_int_pin;
+ bool int_pin_open_drain;
+
+ unsigned int (*get_irq_data_ready) (struct iio_dev *indio_dev);
+
+ const struct st_sensor_transfer_function *tf;
+ struct st_sensor_transfer_buffer tb;
+
+ bool edge_irq;
+ bool hw_irq_trigger;
+ s64 hw_timestamp;
+};
+
+#ifdef CONFIG_IIO_BUFFER
+irqreturn_t st_sensors_trigger_handler(int irq, void *p);
+#endif
+
+#ifdef CONFIG_IIO_TRIGGER
+int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
+ const struct iio_trigger_ops *trigger_ops);
+
+void st_sensors_deallocate_trigger(struct iio_dev *indio_dev);
+int st_sensors_validate_device(struct iio_trigger *trig,
+ struct iio_dev *indio_dev);
+#else
+static inline int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
+ const struct iio_trigger_ops *trigger_ops)
+{
+ return 0;
+}
+static inline void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
+{
+ return;
+}
+#define st_sensors_validate_device NULL
+#endif
+
+int st_sensors_init_sensor(struct iio_dev *indio_dev,
+ struct st_sensors_platform_data *pdata);
+
+int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable);
+
+int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable);
+
+int st_sensors_power_enable(struct iio_dev *indio_dev);
+
+void st_sensors_power_disable(struct iio_dev *indio_dev);
+
+int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
+ unsigned reg, unsigned writeval,
+ unsigned *readval);
+
+int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr);
+
+int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable);
+
+int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale);
+
+int st_sensors_read_info_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *ch, int *val);
+
+int st_sensors_check_device_support(struct iio_dev *indio_dev,
+ int num_sensors_list, const struct st_sensor_settings *sensor_settings);
+
+ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+ssize_t st_sensors_sysfs_scale_avail(struct device *dev,
+ struct device_attribute *attr, char *buf);
+
+#ifdef CONFIG_OF
+void st_sensors_of_name_probe(struct device *dev,
+ const struct of_device_id *match,
+ char *name, int len);
+#else
+static inline void st_sensors_of_name_probe(struct device *dev,
+ const struct of_device_id *match,
+ char *name, int len)
+{
+}
+#endif
+
+#endif /* ST_SENSORS_H */
diff --git a/include/linux/iio/common/st_sensors_i2c.h b/include/linux/iio/common/st_sensors_i2c.h
new file mode 100644
index 0000000..0a2c25e
--- /dev/null
+++ b/include/linux/iio/common/st_sensors_i2c.h
@@ -0,0 +1,30 @@
+/*
+ * STMicroelectronics sensors i2c library driver
+ *
+ * Copyright 2012-2013 STMicroelectronics Inc.
+ *
+ * Denis Ciocca <denis.ciocca@st.com>
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef ST_SENSORS_I2C_H
+#define ST_SENSORS_I2C_H
+
+#include <linux/i2c.h>
+#include <linux/iio/common/st_sensors.h>
+#include <linux/of.h>
+
+void st_sensors_i2c_configure(struct iio_dev *indio_dev,
+ struct i2c_client *client, struct st_sensor_data *sdata);
+
+#ifdef CONFIG_ACPI
+int st_sensors_match_acpi_device(struct device *dev);
+#else
+static inline int st_sensors_match_acpi_device(struct device *dev)
+{
+ return -ENODEV;
+}
+#endif
+
+#endif /* ST_SENSORS_I2C_H */
diff --git a/include/linux/iio/common/st_sensors_spi.h b/include/linux/iio/common/st_sensors_spi.h
new file mode 100644
index 0000000..d964a35
--- /dev/null
+++ b/include/linux/iio/common/st_sensors_spi.h
@@ -0,0 +1,20 @@
+/*
+ * STMicroelectronics sensors spi library driver
+ *
+ * Copyright 2012-2013 STMicroelectronics Inc.
+ *
+ * Denis Ciocca <denis.ciocca@st.com>
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef ST_SENSORS_SPI_H
+#define ST_SENSORS_SPI_H
+
+#include <linux/spi/spi.h>
+#include <linux/iio/common/st_sensors.h>
+
+void st_sensors_spi_configure(struct iio_dev *indio_dev,
+ struct spi_device *spi, struct st_sensor_data *sdata);
+
+#endif /* ST_SENSORS_SPI_H */
diff --git a/include/linux/iio/configfs.h b/include/linux/iio/configfs.h
new file mode 100644
index 0000000..93befd6
--- /dev/null
+++ b/include/linux/iio/configfs.h
@@ -0,0 +1,15 @@
+/*
+ * Industrial I/O configfs support
+ *
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#ifndef __IIO_CONFIGFS
+#define __IIO_CONFIGFS
+
+extern struct configfs_subsystem iio_configfs_subsys;
+
+#endif /* __IIO_CONFIGFS */
diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h
new file mode 100644
index 0000000..9887f4f
--- /dev/null
+++ b/include/linux/iio/consumer.h
@@ -0,0 +1,389 @@
+/*
+ * Industrial I/O in kernel consumer interface
+ *
+ * Copyright (c) 2011 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#ifndef _IIO_INKERN_CONSUMER_H_
+#define _IIO_INKERN_CONSUMER_H_
+
+#include <linux/types.h>
+#include <linux/iio/types.h>
+
+struct iio_dev;
+struct iio_chan_spec;
+struct device;
+
+/**
+ * struct iio_channel - everything needed for a consumer to use a channel
+ * @indio_dev: Device on which the channel exists.
+ * @channel: Full description of the channel.
+ * @data: Data about the channel used by consumer.
+ */
+struct iio_channel {
+ struct iio_dev *indio_dev;
+ const struct iio_chan_spec *channel;
+ void *data;
+};
+
+/**
+ * iio_channel_get() - get description of all that is needed to access channel.
+ * @dev: Pointer to consumer device. Device name must match
+ * the name of the device as provided in the iio_map
+ * with which the desired provider to consumer mapping
+ * was registered.
+ * @consumer_channel: Unique name to identify the channel on the consumer
+ * side. This typically describes the channels use within
+ * the consumer. E.g. 'battery_voltage'
+ */
+struct iio_channel *iio_channel_get(struct device *dev,
+ const char *consumer_channel);
+
+/**
+ * iio_channel_release() - release channels obtained via iio_channel_get
+ * @chan: The channel to be released.
+ */
+void iio_channel_release(struct iio_channel *chan);
+
+/**
+ * devm_iio_channel_get() - Resource managed version of iio_channel_get().
+ * @dev: Pointer to consumer device. Device name must match
+ * the name of the device as provided in the iio_map
+ * with which the desired provider to consumer mapping
+ * was registered.
+ * @consumer_channel: Unique name to identify the channel on the consumer
+ * side. This typically describes the channels use within
+ * the consumer. E.g. 'battery_voltage'
+ *
+ * Returns a pointer to negative errno if it is not able to get the iio channel
+ * otherwise returns valid pointer for iio channel.
+ *
+ * The allocated iio channel is automatically released when the device is
+ * unbound.
+ */
+struct iio_channel *devm_iio_channel_get(struct device *dev,
+ const char *consumer_channel);
+/**
+ * devm_iio_channel_release() - Resource managed version of
+ * iio_channel_release().
+ * @dev: Pointer to consumer device for which resource
+ * is allocared.
+ * @chan: The channel to be released.
+ */
+void devm_iio_channel_release(struct device *dev, struct iio_channel *chan);
+
+/**
+ * iio_channel_get_all() - get all channels associated with a client
+ * @dev: Pointer to consumer device.
+ *
+ * Returns an array of iio_channel structures terminated with one with
+ * null iio_dev pointer.
+ * This function is used by fairly generic consumers to get all the
+ * channels registered as having this consumer.
+ */
+struct iio_channel *iio_channel_get_all(struct device *dev);
+
+/**
+ * iio_channel_release_all() - reverse iio_channel_get_all
+ * @chan: Array of channels to be released.
+ */
+void iio_channel_release_all(struct iio_channel *chan);
+
+/**
+ * devm_iio_channel_get_all() - Resource managed version of
+ * iio_channel_get_all().
+ * @dev: Pointer to consumer device.
+ *
+ * Returns a pointer to negative errno if it is not able to get the iio channel
+ * otherwise returns an array of iio_channel structures terminated with one with
+ * null iio_dev pointer.
+ *
+ * This function is used by fairly generic consumers to get all the
+ * channels registered as having this consumer.
+ *
+ * The allocated iio channels are automatically released when the device is
+ * unbounded.
+ */
+struct iio_channel *devm_iio_channel_get_all(struct device *dev);
+
+/**
+ * devm_iio_channel_release_all() - Resource managed version of
+ * iio_channel_release_all().
+ * @dev: Pointer to consumer device for which resource
+ * is allocared.
+ * @chan: Array channel to be released.
+ */
+void devm_iio_channel_release_all(struct device *dev, struct iio_channel *chan);
+
+struct iio_cb_buffer;
+/**
+ * iio_channel_get_all_cb() - register callback for triggered capture
+ * @dev: Pointer to client device.
+ * @cb: Callback function.
+ * @private: Private data passed to callback.
+ *
+ * NB right now we have no ability to mux data from multiple devices.
+ * So if the channels requested come from different devices this will
+ * fail.
+ */
+struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
+ int (*cb)(const void *data,
+ void *private),
+ void *private);
+/**
+ * iio_channel_cb_set_buffer_watermark() - set the buffer watermark.
+ * @cb_buffer: The callback buffer from whom we want the channel
+ * information.
+ * @watermark: buffer watermark in bytes.
+ *
+ * This function allows to configure the buffer watermark.
+ */
+int iio_channel_cb_set_buffer_watermark(struct iio_cb_buffer *cb_buffer,
+ size_t watermark);
+
+/**
+ * iio_channel_release_all_cb() - release and unregister the callback.
+ * @cb_buffer: The callback buffer that was allocated.
+ */
+void iio_channel_release_all_cb(struct iio_cb_buffer *cb_buffer);
+
+/**
+ * iio_channel_start_all_cb() - start the flow of data through callback.
+ * @cb_buff: The callback buffer we are starting.
+ */
+int iio_channel_start_all_cb(struct iio_cb_buffer *cb_buff);
+
+/**
+ * iio_channel_stop_all_cb() - stop the flow of data through the callback.
+ * @cb_buff: The callback buffer we are stopping.
+ */
+void iio_channel_stop_all_cb(struct iio_cb_buffer *cb_buff);
+
+/**
+ * iio_channel_cb_get_channels() - get access to the underlying channels.
+ * @cb_buffer: The callback buffer from whom we want the channel
+ * information.
+ *
+ * This function allows one to obtain information about the channels.
+ * Whilst this may allow direct reading if all buffers are disabled, the
+ * primary aim is to allow drivers that are consuming a channel to query
+ * things like scaling of the channel.
+ */
+struct iio_channel
+*iio_channel_cb_get_channels(const struct iio_cb_buffer *cb_buffer);
+
+/**
+ * iio_channel_cb_get_iio_dev() - get access to the underlying device.
+ * @cb_buffer: The callback buffer from whom we want the device
+ * information.
+ *
+ * This function allows one to obtain information about the device.
+ * The primary aim is to allow drivers that are consuming a device to query
+ * things like current trigger.
+ */
+struct iio_dev
+*iio_channel_cb_get_iio_dev(const struct iio_cb_buffer *cb_buffer);
+
+/**
+ * iio_read_channel_raw() - read from a given channel
+ * @chan: The channel being queried.
+ * @val: Value read back.
+ *
+ * Note raw reads from iio channels are in adc counts and hence
+ * scale will need to be applied if standard units required.
+ */
+int iio_read_channel_raw(struct iio_channel *chan,
+ int *val);
+
+/**
+ * iio_read_channel_average_raw() - read from a given channel
+ * @chan: The channel being queried.
+ * @val: Value read back.
+ *
+ * Note raw reads from iio channels are in adc counts and hence
+ * scale will need to be applied if standard units required.
+ *
+ * In opposit to the normal iio_read_channel_raw this function
+ * returns the average of multiple reads.
+ */
+int iio_read_channel_average_raw(struct iio_channel *chan, int *val);
+
+/**
+ * iio_read_channel_processed() - read processed value from a given channel
+ * @chan: The channel being queried.
+ * @val: Value read back.
+ *
+ * Returns an error code or 0.
+ *
+ * This function will read a processed value from a channel. A processed value
+ * means that this value will have the correct unit and not some device internal
+ * representation. If the device does not support reporting a processed value
+ * the function will query the raw value and the channels scale and offset and
+ * do the appropriate transformation.
+ */
+int iio_read_channel_processed(struct iio_channel *chan, int *val);
+
+/**
+ * iio_write_channel_attribute() - Write values to the device attribute.
+ * @chan: The channel being queried.
+ * @val: Value being written.
+ * @val2: Value being written.val2 use depends on attribute type.
+ * @attribute: info attribute to be read.
+ *
+ * Returns an error code or 0.
+ */
+int iio_write_channel_attribute(struct iio_channel *chan, int val,
+ int val2, enum iio_chan_info_enum attribute);
+
+/**
+ * iio_read_channel_attribute() - Read values from the device attribute.
+ * @chan: The channel being queried.
+ * @val: Value being written.
+ * @val2: Value being written.Val2 use depends on attribute type.
+ * @attribute: info attribute to be written.
+ *
+ * Returns an error code if failed. Else returns a description of what is in val
+ * and val2, such as IIO_VAL_INT_PLUS_MICRO telling us we have a value of val
+ * + val2/1e6
+ */
+int iio_read_channel_attribute(struct iio_channel *chan, int *val,
+ int *val2, enum iio_chan_info_enum attribute);
+
+/**
+ * iio_write_channel_raw() - write to a given channel
+ * @chan: The channel being queried.
+ * @val: Value being written.
+ *
+ * Note raw writes to iio channels are in dac counts and hence
+ * scale will need to be applied if standard units required.
+ */
+int iio_write_channel_raw(struct iio_channel *chan, int val);
+
+/**
+ * iio_read_max_channel_raw() - read maximum available raw value from a given
+ * channel, i.e. the maximum possible value.
+ * @chan: The channel being queried.
+ * @val: Value read back.
+ *
+ * Note raw reads from iio channels are in adc counts and hence
+ * scale will need to be applied if standard units are required.
+ */
+int iio_read_max_channel_raw(struct iio_channel *chan, int *val);
+
+/**
+ * iio_read_avail_channel_raw() - read available raw values from a given channel
+ * @chan: The channel being queried.
+ * @vals: Available values read back.
+ * @length: Number of entries in vals.
+ *
+ * Returns an error code, IIO_AVAIL_RANGE or IIO_AVAIL_LIST.
+ *
+ * For ranges, three vals are always returned; min, step and max.
+ * For lists, all the possible values are enumerated.
+ *
+ * Note raw available values from iio channels are in adc counts and
+ * hence scale will need to be applied if standard units are required.
+ */
+int iio_read_avail_channel_raw(struct iio_channel *chan,
+ const int **vals, int *length);
+
+/**
+ * iio_get_channel_type() - get the type of a channel
+ * @channel: The channel being queried.
+ * @type: The type of the channel.
+ *
+ * returns the enum iio_chan_type of the channel
+ */
+int iio_get_channel_type(struct iio_channel *channel,
+ enum iio_chan_type *type);
+
+/**
+ * iio_read_channel_offset() - read the offset value for a channel
+ * @chan: The channel being queried.
+ * @val: First part of value read back.
+ * @val2: Second part of value read back.
+ *
+ * Note returns a description of what is in val and val2, such
+ * as IIO_VAL_INT_PLUS_MICRO telling us we have a value of val
+ * + val2/1e6
+ */
+int iio_read_channel_offset(struct iio_channel *chan, int *val,
+ int *val2);
+
+/**
+ * iio_read_channel_scale() - read the scale value for a channel
+ * @chan: The channel being queried.
+ * @val: First part of value read back.
+ * @val2: Second part of value read back.
+ *
+ * Note returns a description of what is in val and val2, such
+ * as IIO_VAL_INT_PLUS_MICRO telling us we have a value of val
+ * + val2/1e6
+ */
+int iio_read_channel_scale(struct iio_channel *chan, int *val,
+ int *val2);
+
+/**
+ * iio_convert_raw_to_processed() - Converts a raw value to a processed value
+ * @chan: The channel being queried
+ * @raw: The raw IIO to convert
+ * @processed: The result of the conversion
+ * @scale: Scale factor to apply during the conversion
+ *
+ * Returns an error code or 0.
+ *
+ * This function converts a raw value to processed value for a specific channel.
+ * A raw value is the device internal representation of a sample and the value
+ * returned by iio_read_channel_raw, so the unit of that value is device
+ * depended. A processed value on the other hand is value has a normed unit
+ * according with the IIO specification.
+ *
+ * The scale factor allows to increase the precession of the returned value. For
+ * a scale factor of 1 the function will return the result in the normal IIO
+ * unit for the channel type. E.g. millivolt for voltage channels, if you want
+ * nanovolts instead pass 1000000 as the scale factor.
+ */
+int iio_convert_raw_to_processed(struct iio_channel *chan, int raw,
+ int *processed, unsigned int scale);
+
+/**
+ * iio_get_channel_ext_info_count() - get number of ext_info attributes
+ * connected to the channel.
+ * @chan: The channel being queried
+ *
+ * Returns the number of ext_info attributes
+ */
+unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan);
+
+/**
+ * iio_read_channel_ext_info() - read ext_info attribute from a given channel
+ * @chan: The channel being queried.
+ * @attr: The ext_info attribute to read.
+ * @buf: Where to store the attribute value. Assumed to hold
+ * at least PAGE_SIZE bytes.
+ *
+ * Returns the number of bytes written to buf (perhaps w/o zero termination;
+ * it need not even be a string), or an error code.
+ */
+ssize_t iio_read_channel_ext_info(struct iio_channel *chan,
+ const char *attr, char *buf);
+
+/**
+ * iio_write_channel_ext_info() - write ext_info attribute from a given channel
+ * @chan: The channel being queried.
+ * @attr: The ext_info attribute to read.
+ * @buf: The new attribute value. Strings needs to be zero-
+ * terminated, but the terminator should not be included
+ * in the below len.
+ * @len: The size of the new attribute value.
+ *
+ * Returns the number of accepted bytes, which should be the same as len.
+ * An error code can also be returned.
+ */
+ssize_t iio_write_channel_ext_info(struct iio_channel *chan, const char *attr,
+ const char *buf, size_t len);
+
+#endif
diff --git a/include/linux/iio/dac/ad5421.h b/include/linux/iio/dac/ad5421.h
new file mode 100644
index 0000000..d8ee9a7
--- /dev/null
+++ b/include/linux/iio/dac/ad5421.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __IIO_DAC_AD5421_H__
+#define __IIO_DAC_AD5421_H__
+
+/**
+ * enum ad5421_current_range - Current range the AD5421 is configured for.
+ * @AD5421_CURRENT_RANGE_4mA_20mA: 4 mA to 20 mA (RANGE1,0 pins = 00)
+ * @AD5421_CURRENT_RANGE_3mA8_21mA: 3.8 mA to 21 mA (RANGE1,0 pins = x1)
+ * @AD5421_CURRENT_RANGE_3mA2_24mA: 3.2 mA to 24 mA (RANGE1,0 pins = 10)
+ */
+
+enum ad5421_current_range {
+ AD5421_CURRENT_RANGE_4mA_20mA,
+ AD5421_CURRENT_RANGE_3mA8_21mA,
+ AD5421_CURRENT_RANGE_3mA2_24mA,
+};
+
+/**
+ * struct ad5421_platform_data - AD5421 DAC driver platform data
+ * @external_vref: whether an external reference voltage is used or not
+ * @current_range: Current range the AD5421 is configured for
+ */
+
+struct ad5421_platform_data {
+ bool external_vref;
+ enum ad5421_current_range current_range;
+};
+
+#endif
diff --git a/include/linux/iio/dac/ad5504.h b/include/linux/iio/dac/ad5504.h
new file mode 100644
index 0000000..4389537
--- /dev/null
+++ b/include/linux/iio/dac/ad5504.h
@@ -0,0 +1,16 @@
+/*
+ * AD5504 SPI DAC driver
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef SPI_AD5504_H_
+#define SPI_AD5504_H_
+
+struct ad5504_platform_data {
+ u16 vref_mv;
+};
+
+#endif /* SPI_AD5504_H_ */
diff --git a/include/linux/iio/dac/ad5791.h b/include/linux/iio/dac/ad5791.h
new file mode 100644
index 0000000..45ee281
--- /dev/null
+++ b/include/linux/iio/dac/ad5791.h
@@ -0,0 +1,25 @@
+/*
+ * AD5791 SPI DAC driver
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef SPI_AD5791_H_
+#define SPI_AD5791_H_
+
+/**
+ * struct ad5791_platform_data - platform specific information
+ * @vref_pos_mv: Vdd Positive Analog Supply Volatge (mV)
+ * @vref_neg_mv: Vdd Negative Analog Supply Volatge (mV)
+ * @use_rbuf_gain2: ext. amplifier connected in gain of two configuration
+ */
+
+struct ad5791_platform_data {
+ u16 vref_pos_mv;
+ u16 vref_neg_mv;
+ bool use_rbuf_gain2;
+};
+
+#endif /* SPI_AD5791_H_ */
diff --git a/include/linux/iio/dac/max517.h b/include/linux/iio/dac/max517.h
new file mode 100644
index 0000000..7668716
--- /dev/null
+++ b/include/linux/iio/dac/max517.h
@@ -0,0 +1,15 @@
+/*
+ * MAX517 DAC driver
+ *
+ * Copyright 2011 Roland Stigge <stigge@antcom.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+#ifndef IIO_DAC_MAX517_H_
+#define IIO_DAC_MAX517_H_
+
+struct max517_platform_data {
+ u16 vref_mv[8];
+};
+
+#endif /* IIO_DAC_MAX517_H_ */
diff --git a/include/linux/iio/dac/mcp4725.h b/include/linux/iio/dac/mcp4725.h
new file mode 100644
index 0000000..628b2cf
--- /dev/null
+++ b/include/linux/iio/dac/mcp4725.h
@@ -0,0 +1,26 @@
+/*
+ * MCP4725 DAC driver
+ *
+ * Copyright (C) 2012 Peter Meerwald <pmeerw@pmeerw.net>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef IIO_DAC_MCP4725_H_
+#define IIO_DAC_MCP4725_H_
+
+/**
+ * struct mcp4725_platform_data - MCP4725/6 DAC specific data.
+ * @use_vref: Whether an external reference voltage on Vref pin should be used.
+ * Additional vref-supply must be specified when used.
+ * @vref_buffered: Controls buffering of the external reference voltage.
+ *
+ * Vref related settings are available only on MCP4756. See
+ * Documentation/devicetree/bindings/iio/dac/mcp4725.txt for more information.
+ */
+struct mcp4725_platform_data {
+ bool use_vref;
+ bool vref_buffered;
+};
+
+#endif /* IIO_DAC_MCP4725_H_ */
diff --git a/include/linux/iio/driver.h b/include/linux/iio/driver.h
new file mode 100644
index 0000000..7dfb10e
--- /dev/null
+++ b/include/linux/iio/driver.h
@@ -0,0 +1,31 @@
+/*
+ * Industrial I/O in kernel access map interface.
+ *
+ * Copyright (c) 2011 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef _IIO_INKERN_H_
+#define _IIO_INKERN_H_
+
+struct iio_map;
+
+/**
+ * iio_map_array_register() - tell the core about inkernel consumers
+ * @indio_dev: provider device
+ * @map: array of mappings specifying association of channel with client
+ */
+int iio_map_array_register(struct iio_dev *indio_dev,
+ struct iio_map *map);
+
+/**
+ * iio_map_array_unregister() - tell the core to remove consumer mappings for
+ * the given provider device
+ * @indio_dev: provider device
+ */
+int iio_map_array_unregister(struct iio_dev *indio_dev);
+
+#endif
diff --git a/include/linux/iio/events.h b/include/linux/iio/events.h
new file mode 100644
index 0000000..8ad87d1
--- /dev/null
+++ b/include/linux/iio/events.h
@@ -0,0 +1,59 @@
+/* The industrial I/O - event passing to userspace
+ *
+ * Copyright (c) 2008-2011 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#ifndef _IIO_EVENTS_H_
+#define _IIO_EVENTS_H_
+
+#include <linux/iio/types.h>
+#include <uapi/linux/iio/events.h>
+
+/**
+ * IIO_EVENT_CODE() - create event identifier
+ * @chan_type: Type of the channel. Should be one of enum iio_chan_type.
+ * @diff: Whether the event is for an differential channel or not.
+ * @modifier: Modifier for the channel. Should be one of enum iio_modifier.
+ * @direction: Direction of the event. One of enum iio_event_direction.
+ * @type: Type of the event. Should be one of enum iio_event_type.
+ * @chan: Channel number for non-differential channels.
+ * @chan1: First channel number for differential channels.
+ * @chan2: Second channel number for differential channels.
+ */
+
+#define IIO_EVENT_CODE(chan_type, diff, modifier, direction, \
+ type, chan, chan1, chan2) \
+ (((u64)type << 56) | ((u64)diff << 55) | \
+ ((u64)direction << 48) | ((u64)modifier << 40) | \
+ ((u64)chan_type << 32) | (((u16)chan2) << 16) | ((u16)chan1) | \
+ ((u16)chan))
+
+
+/**
+ * IIO_MOD_EVENT_CODE() - create event identifier for modified channels
+ * @chan_type: Type of the channel. Should be one of enum iio_chan_type.
+ * @number: Channel number.
+ * @modifier: Modifier for the channel. Should be one of enum iio_modifier.
+ * @type: Type of the event. Should be one of enum iio_event_type.
+ * @direction: Direction of the event. One of enum iio_event_direction.
+ */
+
+#define IIO_MOD_EVENT_CODE(chan_type, number, modifier, \
+ type, direction) \
+ IIO_EVENT_CODE(chan_type, 0, modifier, direction, type, number, 0, 0)
+
+/**
+ * IIO_UNMOD_EVENT_CODE() - create event identifier for unmodified channels
+ * @chan_type: Type of the channel. Should be one of enum iio_chan_type.
+ * @number: Channel number.
+ * @type: Type of the event. Should be one of enum iio_event_type.
+ * @direction: Direction of the event. One of enum iio_event_direction.
+ */
+
+#define IIO_UNMOD_EVENT_CODE(chan_type, number, type, direction) \
+ IIO_EVENT_CODE(chan_type, 0, 0, direction, type, number, 0, 0)
+
+#endif
diff --git a/include/linux/iio/frequency/ad9523.h b/include/linux/iio/frequency/ad9523.h
new file mode 100644
index 0000000..12ce3ee
--- /dev/null
+++ b/include/linux/iio/frequency/ad9523.h
@@ -0,0 +1,195 @@
+/*
+ * AD9523 SPI Low Jitter Clock Generator
+ *
+ * Copyright 2012 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef IIO_FREQUENCY_AD9523_H_
+#define IIO_FREQUENCY_AD9523_H_
+
+enum outp_drv_mode {
+ TRISTATE,
+ LVPECL_8mA,
+ LVDS_4mA,
+ LVDS_7mA,
+ HSTL0_16mA,
+ HSTL1_8mA,
+ CMOS_CONF1,
+ CMOS_CONF2,
+ CMOS_CONF3,
+ CMOS_CONF4,
+ CMOS_CONF5,
+ CMOS_CONF6,
+ CMOS_CONF7,
+ CMOS_CONF8,
+ CMOS_CONF9
+};
+
+enum ref_sel_mode {
+ NONEREVERTIVE_STAY_ON_REFB,
+ REVERT_TO_REFA,
+ SELECT_REFA,
+ SELECT_REFB,
+ EXT_REF_SEL
+};
+
+/**
+ * struct ad9523_channel_spec - Output channel configuration
+ *
+ * @channel_num: Output channel number.
+ * @divider_output_invert_en: Invert the polarity of the output clock.
+ * @sync_ignore_en: Ignore chip-level SYNC signal.
+ * @low_power_mode_en: Reduce power used in the differential output modes.
+ * @use_alt_clock_src: Channel divider uses alternative clk source.
+ * @output_dis: Disables, powers down the entire channel.
+ * @driver_mode: Output driver mode (logic level family).
+ * @divider_phase: Divider initial phase after a SYNC. Range 0..63
+ LSB = 1/2 of a period of the divider input clock.
+ * @channel_divider: 10-bit channel divider.
+ * @extended_name: Optional descriptive channel name.
+ */
+
+struct ad9523_channel_spec {
+ unsigned channel_num;
+ bool divider_output_invert_en;
+ bool sync_ignore_en;
+ bool low_power_mode_en;
+ /* CH0..CH3 VCXO, CH4..CH9 VCO2 */
+ bool use_alt_clock_src;
+ bool output_dis;
+ enum outp_drv_mode driver_mode;
+ unsigned char divider_phase;
+ unsigned short channel_divider;
+ char extended_name[16];
+};
+
+enum pll1_rzero_resistor {
+ RZERO_883_OHM,
+ RZERO_677_OHM,
+ RZERO_341_OHM,
+ RZERO_135_OHM,
+ RZERO_10_OHM,
+ RZERO_USE_EXT_RES = 8,
+};
+
+enum rpole2_resistor {
+ RPOLE2_900_OHM,
+ RPOLE2_450_OHM,
+ RPOLE2_300_OHM,
+ RPOLE2_225_OHM,
+};
+
+enum rzero_resistor {
+ RZERO_3250_OHM,
+ RZERO_2750_OHM,
+ RZERO_2250_OHM,
+ RZERO_2100_OHM,
+ RZERO_3000_OHM,
+ RZERO_2500_OHM,
+ RZERO_2000_OHM,
+ RZERO_1850_OHM,
+};
+
+enum cpole1_capacitor {
+ CPOLE1_0_PF,
+ CPOLE1_8_PF,
+ CPOLE1_16_PF,
+ CPOLE1_24_PF,
+ _CPOLE1_24_PF, /* place holder */
+ CPOLE1_32_PF,
+ CPOLE1_40_PF,
+ CPOLE1_48_PF,
+};
+
+/**
+ * struct ad9523_platform_data - platform specific information
+ *
+ * @vcxo_freq: External VCXO frequency in Hz
+ * @refa_diff_rcv_en: REFA differential/single-ended input selection.
+ * @refb_diff_rcv_en: REFB differential/single-ended input selection.
+ * @zd_in_diff_en: Zero Delay differential/single-ended input selection.
+ * @osc_in_diff_en: OSC differential/ single-ended input selection.
+ * @refa_cmos_neg_inp_en: REFA single-ended neg./pos. input enable.
+ * @refb_cmos_neg_inp_en: REFB single-ended neg./pos. input enable.
+ * @zd_in_cmos_neg_inp_en: Zero Delay single-ended neg./pos. input enable.
+ * @osc_in_cmos_neg_inp_en: OSC single-ended neg./pos. input enable.
+ * @refa_r_div: PLL1 10-bit REFA R divider.
+ * @refb_r_div: PLL1 10-bit REFB R divider.
+ * @pll1_feedback_div: PLL1 10-bit Feedback N divider.
+ * @pll1_charge_pump_current_nA: Magnitude of PLL1 charge pump current (nA).
+ * @zero_delay_mode_internal_en: Internal, external Zero Delay mode selection.
+ * @osc_in_feedback_en: PLL1 feedback path, local feedback from
+ * the OSC_IN receiver or zero delay mode
+ * @pll1_loop_filter_rzero: PLL1 Loop Filter Zero Resistor selection.
+ * @ref_mode: Reference selection mode.
+ * @pll2_charge_pump_current_nA: Magnitude of PLL2 charge pump current (nA).
+ * @pll2_ndiv_a_cnt: PLL2 Feedback N-divider, A Counter, range 0..4.
+ * @pll2_ndiv_b_cnt: PLL2 Feedback N-divider, B Counter, range 0..63.
+ * @pll2_freq_doubler_en: PLL2 frequency doubler enable.
+ * @pll2_r2_div: PLL2 R2 divider, range 0..31.
+ * @pll2_vco_diff_m1: VCO1 divider, range 3..5.
+ * @pll2_vco_diff_m2: VCO2 divider, range 3..5.
+ * @rpole2: PLL2 loop filter Rpole resistor value.
+ * @rzero: PLL2 loop filter Rzero resistor value.
+ * @cpole1: PLL2 loop filter Cpole capacitor value.
+ * @rzero_bypass_en: PLL2 loop filter Rzero bypass enable.
+ * @num_channels: Array size of struct ad9523_channel_spec.
+ * @channels: Pointer to channel array.
+ * @name: Optional alternative iio device name.
+ */
+
+struct ad9523_platform_data {
+ unsigned long vcxo_freq;
+
+ /* Differential/ Single-Ended Input Configuration */
+ bool refa_diff_rcv_en;
+ bool refb_diff_rcv_en;
+ bool zd_in_diff_en;
+ bool osc_in_diff_en;
+
+ /*
+ * Valid if differential input disabled
+ * if false defaults to pos input
+ */
+ bool refa_cmos_neg_inp_en;
+ bool refb_cmos_neg_inp_en;
+ bool zd_in_cmos_neg_inp_en;
+ bool osc_in_cmos_neg_inp_en;
+
+ /* PLL1 Setting */
+ unsigned short refa_r_div;
+ unsigned short refb_r_div;
+ unsigned short pll1_feedback_div;
+ unsigned short pll1_charge_pump_current_nA;
+ bool zero_delay_mode_internal_en;
+ bool osc_in_feedback_en;
+ enum pll1_rzero_resistor pll1_loop_filter_rzero;
+
+ /* Reference */
+ enum ref_sel_mode ref_mode;
+
+ /* PLL2 Setting */
+ unsigned int pll2_charge_pump_current_nA;
+ unsigned char pll2_ndiv_a_cnt;
+ unsigned char pll2_ndiv_b_cnt;
+ bool pll2_freq_doubler_en;
+ unsigned char pll2_r2_div;
+ unsigned char pll2_vco_diff_m1; /* 3..5 */
+ unsigned char pll2_vco_diff_m2; /* 3..5 */
+
+ /* Loop Filter PLL2 */
+ enum rpole2_resistor rpole2;
+ enum rzero_resistor rzero;
+ enum cpole1_capacitor cpole1;
+ bool rzero_bypass_en;
+
+ /* Output Channel Configuration */
+ int num_channels;
+ struct ad9523_channel_spec *channels;
+
+ char name[SPI_NAME_SIZE];
+};
+
+#endif /* IIO_FREQUENCY_AD9523_H_ */
diff --git a/include/linux/iio/frequency/adf4350.h b/include/linux/iio/frequency/adf4350.h
new file mode 100644
index 0000000..ffd8c8f
--- /dev/null
+++ b/include/linux/iio/frequency/adf4350.h
@@ -0,0 +1,128 @@
+/*
+ * ADF4350/ADF4351 SPI PLL driver
+ *
+ * Copyright 2012-2013 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef IIO_PLL_ADF4350_H_
+#define IIO_PLL_ADF4350_H_
+
+/* Registers */
+#define ADF4350_REG0 0
+#define ADF4350_REG1 1
+#define ADF4350_REG2 2
+#define ADF4350_REG3 3
+#define ADF4350_REG4 4
+#define ADF4350_REG5 5
+
+/* REG0 Bit Definitions */
+#define ADF4350_REG0_FRACT(x) (((x) & 0xFFF) << 3)
+#define ADF4350_REG0_INT(x) (((x) & 0xFFFF) << 15)
+
+/* REG1 Bit Definitions */
+#define ADF4350_REG1_MOD(x) (((x) & 0xFFF) << 3)
+#define ADF4350_REG1_PHASE(x) (((x) & 0xFFF) << 15)
+#define ADF4350_REG1_PRESCALER (1 << 27)
+
+/* REG2 Bit Definitions */
+#define ADF4350_REG2_COUNTER_RESET_EN (1 << 3)
+#define ADF4350_REG2_CP_THREESTATE_EN (1 << 4)
+#define ADF4350_REG2_POWER_DOWN_EN (1 << 5)
+#define ADF4350_REG2_PD_POLARITY_POS (1 << 6)
+#define ADF4350_REG2_LDP_6ns (1 << 7)
+#define ADF4350_REG2_LDP_10ns (0 << 7)
+#define ADF4350_REG2_LDF_FRACT_N (0 << 8)
+#define ADF4350_REG2_LDF_INT_N (1 << 8)
+#define ADF4350_REG2_CHARGE_PUMP_CURR_uA(x) (((((x)-312) / 312) & 0xF) << 9)
+#define ADF4350_REG2_DOUBLE_BUFF_EN (1 << 13)
+#define ADF4350_REG2_10BIT_R_CNT(x) ((x) << 14)
+#define ADF4350_REG2_RDIV2_EN (1 << 24)
+#define ADF4350_REG2_RMULT2_EN (1 << 25)
+#define ADF4350_REG2_MUXOUT(x) ((x) << 26)
+#define ADF4350_REG2_NOISE_MODE(x) (((unsigned)(x)) << 29)
+#define ADF4350_MUXOUT_THREESTATE 0
+#define ADF4350_MUXOUT_DVDD 1
+#define ADF4350_MUXOUT_GND 2
+#define ADF4350_MUXOUT_R_DIV_OUT 3
+#define ADF4350_MUXOUT_N_DIV_OUT 4
+#define ADF4350_MUXOUT_ANALOG_LOCK_DETECT 5
+#define ADF4350_MUXOUT_DIGITAL_LOCK_DETECT 6
+
+/* REG3 Bit Definitions */
+#define ADF4350_REG3_12BIT_CLKDIV(x) ((x) << 3)
+#define ADF4350_REG3_12BIT_CLKDIV_MODE(x) ((x) << 16)
+#define ADF4350_REG3_12BIT_CSR_EN (1 << 18)
+#define ADF4351_REG3_CHARGE_CANCELLATION_EN (1 << 21)
+#define ADF4351_REG3_ANTI_BACKLASH_3ns_EN (1 << 22)
+#define ADF4351_REG3_BAND_SEL_CLOCK_MODE_HIGH (1 << 23)
+
+/* REG4 Bit Definitions */
+#define ADF4350_REG4_OUTPUT_PWR(x) ((x) << 3)
+#define ADF4350_REG4_RF_OUT_EN (1 << 5)
+#define ADF4350_REG4_AUX_OUTPUT_PWR(x) ((x) << 6)
+#define ADF4350_REG4_AUX_OUTPUT_EN (1 << 8)
+#define ADF4350_REG4_AUX_OUTPUT_FUND (1 << 9)
+#define ADF4350_REG4_AUX_OUTPUT_DIV (0 << 9)
+#define ADF4350_REG4_MUTE_TILL_LOCK_EN (1 << 10)
+#define ADF4350_REG4_VCO_PWRDOWN_EN (1 << 11)
+#define ADF4350_REG4_8BIT_BAND_SEL_CLKDIV(x) ((x) << 12)
+#define ADF4350_REG4_RF_DIV_SEL(x) ((x) << 20)
+#define ADF4350_REG4_FEEDBACK_DIVIDED (0 << 23)
+#define ADF4350_REG4_FEEDBACK_FUND (1 << 23)
+
+/* REG5 Bit Definitions */
+#define ADF4350_REG5_LD_PIN_MODE_LOW (0 << 22)
+#define ADF4350_REG5_LD_PIN_MODE_DIGITAL (1 << 22)
+#define ADF4350_REG5_LD_PIN_MODE_HIGH (3 << 22)
+
+/* Specifications */
+#define ADF4350_MAX_OUT_FREQ 4400000000ULL /* Hz */
+#define ADF4350_MIN_OUT_FREQ 137500000 /* Hz */
+#define ADF4351_MIN_OUT_FREQ 34375000 /* Hz */
+#define ADF4350_MIN_VCO_FREQ 2200000000ULL /* Hz */
+#define ADF4350_MAX_FREQ_45_PRESC 3000000000ULL /* Hz */
+#define ADF4350_MAX_FREQ_PFD 32000000 /* Hz */
+#define ADF4350_MAX_BANDSEL_CLK 125000 /* Hz */
+#define ADF4350_MAX_FREQ_REFIN 250000000 /* Hz */
+#define ADF4350_MAX_MODULUS 4095
+#define ADF4350_MAX_R_CNT 1023
+
+
+/**
+ * struct adf4350_platform_data - platform specific information
+ * @name: Optional device name.
+ * @clkin: REFin frequency in Hz.
+ * @channel_spacing: Channel spacing in Hz (influences MODULUS).
+ * @power_up_frequency: Optional, If set in Hz the PLL tunes to the desired
+ * frequency on probe.
+ * @ref_div_factor: Optional, if set the driver skips dynamic calculation
+ * and uses this default value instead.
+ * @ref_doubler_en: Enables reference doubler.
+ * @ref_div2_en: Enables reference divider.
+ * @r2_user_settings: User defined settings for ADF4350/1 REGISTER_2.
+ * @r3_user_settings: User defined settings for ADF4350/1 REGISTER_3.
+ * @r4_user_settings: User defined settings for ADF4350/1 REGISTER_4.
+ * @gpio_lock_detect: Optional, if set with a valid GPIO number,
+ * pll lock state is tested upon read.
+ * If not used - set to -1.
+ */
+
+struct adf4350_platform_data {
+ char name[32];
+ unsigned long clkin;
+ unsigned long channel_spacing;
+ unsigned long long power_up_frequency;
+
+ unsigned short ref_div_factor; /* 10-bit R counter */
+ bool ref_doubler_en;
+ bool ref_div2_en;
+
+ unsigned r2_user_settings;
+ unsigned r3_user_settings;
+ unsigned r4_user_settings;
+ int gpio_lock_detect;
+};
+
+#endif /* IIO_PLL_ADF4350_H_ */
diff --git a/include/linux/iio/gyro/itg3200.h b/include/linux/iio/gyro/itg3200.h
new file mode 100644
index 0000000..2a82085
--- /dev/null
+++ b/include/linux/iio/gyro/itg3200.h
@@ -0,0 +1,154 @@
+/*
+ * itg3200.h -- support InvenSense ITG3200
+ * Digital 3-Axis Gyroscope driver
+ *
+ * Copyright (c) 2011 Christian Strobel <christian.strobel@iis.fraunhofer.de>
+ * Copyright (c) 2011 Manuel Stahl <manuel.stahl@iis.fraunhofer.de>
+ * Copyright (c) 2012 Thorsten Nowak <thorsten.nowak@iis.fraunhofer.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef I2C_ITG3200_H_
+#define I2C_ITG3200_H_
+
+#include <linux/iio/iio.h>
+
+/* Register with I2C address (34h) */
+#define ITG3200_REG_ADDRESS 0x00
+
+/* Sample rate divider
+ * Range: 0 to 255
+ * Default value: 0x00 */
+#define ITG3200_REG_SAMPLE_RATE_DIV 0x15
+
+/* Digital low pass filter settings */
+#define ITG3200_REG_DLPF 0x16
+/* DLPF full scale range */
+#define ITG3200_DLPF_FS_SEL_2000 0x18
+/* Bandwidth (Hz) and internal sample rate
+ * (kHz) of DLPF */
+#define ITG3200_DLPF_256_8 0x00
+#define ITG3200_DLPF_188_1 0x01
+#define ITG3200_DLPF_98_1 0x02
+#define ITG3200_DLPF_42_1 0x03
+#define ITG3200_DLPF_20_1 0x04
+#define ITG3200_DLPF_10_1 0x05
+#define ITG3200_DLPF_5_1 0x06
+
+#define ITG3200_DLPF_CFG_MASK 0x07
+
+/* Configuration for interrupt operations */
+#define ITG3200_REG_IRQ_CONFIG 0x17
+/* Logic level */
+#define ITG3200_IRQ_ACTIVE_LOW 0x80
+#define ITG3200_IRQ_ACTIVE_HIGH 0x00
+/* Drive type */
+#define ITG3200_IRQ_OPEN_DRAIN 0x40
+#define ITG3200_IRQ_PUSH_PULL 0x00
+/* Latch mode */
+#define ITG3200_IRQ_LATCH_UNTIL_CLEARED 0x20
+#define ITG3200_IRQ_LATCH_50US_PULSE 0x00
+/* Latch clear method */
+#define ITG3200_IRQ_LATCH_CLEAR_ANY 0x10
+#define ITG3200_IRQ_LATCH_CLEAR_STATUS 0x00
+/* Enable interrupt when device is ready */
+#define ITG3200_IRQ_DEVICE_RDY_ENABLE 0x04
+/* Enable interrupt when data is available */
+#define ITG3200_IRQ_DATA_RDY_ENABLE 0x01
+
+/* Determine the status of ITG-3200 interrupts */
+#define ITG3200_REG_IRQ_STATUS 0x1A
+/* Status of 'device is ready'-interrupt */
+#define ITG3200_IRQ_DEVICE_RDY_STATUS 0x04
+/* Status of 'data is available'-interrupt */
+#define ITG3200_IRQ_DATA_RDY_STATUS 0x01
+
+/* Sensor registers */
+#define ITG3200_REG_TEMP_OUT_H 0x1B
+#define ITG3200_REG_TEMP_OUT_L 0x1C
+#define ITG3200_REG_GYRO_XOUT_H 0x1D
+#define ITG3200_REG_GYRO_XOUT_L 0x1E
+#define ITG3200_REG_GYRO_YOUT_H 0x1F
+#define ITG3200_REG_GYRO_YOUT_L 0x20
+#define ITG3200_REG_GYRO_ZOUT_H 0x21
+#define ITG3200_REG_GYRO_ZOUT_L 0x22
+
+/* Power management */
+#define ITG3200_REG_POWER_MANAGEMENT 0x3E
+/* Reset device and internal registers to the
+ * power-up-default settings */
+#define ITG3200_RESET 0x80
+/* Enable low power sleep mode */
+#define ITG3200_SLEEP 0x40
+/* Put according gyroscope in standby mode */
+#define ITG3200_STANDBY_GYRO_X 0x20
+#define ITG3200_STANDBY_GYRO_Y 0x10
+#define ITG3200_STANDBY_GYRO_Z 0x08
+/* Determine the device clock source */
+#define ITG3200_CLK_INTERNAL 0x00
+#define ITG3200_CLK_GYRO_X 0x01
+#define ITG3200_CLK_GYRO_Y 0x02
+#define ITG3200_CLK_GYRO_Z 0x03
+#define ITG3200_CLK_EXT_32K 0x04
+#define ITG3200_CLK_EXT_19M 0x05
+
+
+/**
+ * struct itg3200 - device instance specific data
+ * @i2c: actual i2c_client
+ * @trig: data ready trigger from itg3200 pin
+ **/
+struct itg3200 {
+ struct i2c_client *i2c;
+ struct iio_trigger *trig;
+};
+
+enum ITG3200_SCAN_INDEX {
+ ITG3200_SCAN_TEMP,
+ ITG3200_SCAN_GYRO_X,
+ ITG3200_SCAN_GYRO_Y,
+ ITG3200_SCAN_GYRO_Z,
+ ITG3200_SCAN_ELEMENTS,
+};
+
+int itg3200_write_reg_8(struct iio_dev *indio_dev,
+ u8 reg_address, u8 val);
+
+int itg3200_read_reg_8(struct iio_dev *indio_dev,
+ u8 reg_address, u8 *val);
+
+
+#ifdef CONFIG_IIO_BUFFER
+
+void itg3200_remove_trigger(struct iio_dev *indio_dev);
+int itg3200_probe_trigger(struct iio_dev *indio_dev);
+
+int itg3200_buffer_configure(struct iio_dev *indio_dev);
+void itg3200_buffer_unconfigure(struct iio_dev *indio_dev);
+
+#else /* CONFIG_IIO_BUFFER */
+
+static inline void itg3200_remove_trigger(struct iio_dev *indio_dev)
+{
+}
+
+static inline int itg3200_probe_trigger(struct iio_dev *indio_dev)
+{
+ return 0;
+}
+
+static inline int itg3200_buffer_configure(struct iio_dev *indio_dev)
+{
+ return 0;
+}
+
+static inline void itg3200_buffer_unconfigure(struct iio_dev *indio_dev)
+{
+}
+
+#endif /* CONFIG_IIO_BUFFER */
+
+#endif /* ITG3200_H_ */
diff --git a/include/linux/iio/hw-consumer.h b/include/linux/iio/hw-consumer.h
new file mode 100644
index 0000000..44d48bb
--- /dev/null
+++ b/include/linux/iio/hw-consumer.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Industrial I/O in kernel hardware consumer interface
+ *
+ * Copyright 2017 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ */
+
+#ifndef LINUX_IIO_HW_CONSUMER_H
+#define LINUX_IIO_HW_CONSUMER_H
+
+struct iio_hw_consumer;
+
+struct iio_hw_consumer *iio_hw_consumer_alloc(struct device *dev);
+void iio_hw_consumer_free(struct iio_hw_consumer *hwc);
+struct iio_hw_consumer *devm_iio_hw_consumer_alloc(struct device *dev);
+void devm_iio_hw_consumer_free(struct device *dev, struct iio_hw_consumer *hwc);
+int iio_hw_consumer_enable(struct iio_hw_consumer *hwc);
+void iio_hw_consumer_disable(struct iio_hw_consumer *hwc);
+
+#endif
diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
new file mode 100644
index 0000000..a74cb17
--- /dev/null
+++ b/include/linux/iio/iio.h
@@ -0,0 +1,766 @@
+
+/* The industrial I/O core
+ *
+ * Copyright (c) 2008 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#ifndef _INDUSTRIAL_IO_H_
+#define _INDUSTRIAL_IO_H_
+
+#include <linux/device.h>
+#include <linux/cdev.h>
+#include <linux/iio/types.h>
+#include <linux/of.h>
+/* IIO TODO LIST */
+/*
+ * Provide means of adjusting timer accuracy.
+ * Currently assumes nano seconds.
+ */
+
+enum iio_shared_by {
+ IIO_SEPARATE,
+ IIO_SHARED_BY_TYPE,
+ IIO_SHARED_BY_DIR,
+ IIO_SHARED_BY_ALL
+};
+
+enum iio_endian {
+ IIO_CPU,
+ IIO_BE,
+ IIO_LE,
+};
+
+struct iio_chan_spec;
+struct iio_dev;
+
+/**
+ * struct iio_chan_spec_ext_info - Extended channel info attribute
+ * @name: Info attribute name
+ * @shared: Whether this attribute is shared between all channels.
+ * @read: Read callback for this info attribute, may be NULL.
+ * @write: Write callback for this info attribute, may be NULL.
+ * @private: Data private to the driver.
+ */
+struct iio_chan_spec_ext_info {
+ const char *name;
+ enum iio_shared_by shared;
+ ssize_t (*read)(struct iio_dev *, uintptr_t private,
+ struct iio_chan_spec const *, char *buf);
+ ssize_t (*write)(struct iio_dev *, uintptr_t private,
+ struct iio_chan_spec const *, const char *buf,
+ size_t len);
+ uintptr_t private;
+};
+
+/**
+ * struct iio_enum - Enum channel info attribute
+ * @items: An array of strings.
+ * @num_items: Length of the item array.
+ * @set: Set callback function, may be NULL.
+ * @get: Get callback function, may be NULL.
+ *
+ * The iio_enum struct can be used to implement enum style channel attributes.
+ * Enum style attributes are those which have a set of strings which map to
+ * unsigned integer values. The IIO enum helper code takes care of mapping
+ * between value and string as well as generating a "_available" file which
+ * contains a list of all available items. The set callback will be called when
+ * the attribute is updated. The last parameter is the index to the newly
+ * activated item. The get callback will be used to query the currently active
+ * item and is supposed to return the index for it.
+ */
+struct iio_enum {
+ const char * const *items;
+ unsigned int num_items;
+ int (*set)(struct iio_dev *, const struct iio_chan_spec *, unsigned int);
+ int (*get)(struct iio_dev *, const struct iio_chan_spec *);
+};
+
+ssize_t iio_enum_available_read(struct iio_dev *indio_dev,
+ uintptr_t priv, const struct iio_chan_spec *chan, char *buf);
+ssize_t iio_enum_read(struct iio_dev *indio_dev,
+ uintptr_t priv, const struct iio_chan_spec *chan, char *buf);
+ssize_t iio_enum_write(struct iio_dev *indio_dev,
+ uintptr_t priv, const struct iio_chan_spec *chan, const char *buf,
+ size_t len);
+
+/**
+ * IIO_ENUM() - Initialize enum extended channel attribute
+ * @_name: Attribute name
+ * @_shared: Whether the attribute is shared between all channels
+ * @_e: Pointer to an iio_enum struct
+ *
+ * This should usually be used together with IIO_ENUM_AVAILABLE()
+ */
+#define IIO_ENUM(_name, _shared, _e) \
+{ \
+ .name = (_name), \
+ .shared = (_shared), \
+ .read = iio_enum_read, \
+ .write = iio_enum_write, \
+ .private = (uintptr_t)(_e), \
+}
+
+/**
+ * IIO_ENUM_AVAILABLE() - Initialize enum available extended channel attribute
+ * @_name: Attribute name ("_available" will be appended to the name)
+ * @_e: Pointer to an iio_enum struct
+ *
+ * Creates a read only attribute which lists all the available enum items in a
+ * space separated list. This should usually be used together with IIO_ENUM()
+ */
+#define IIO_ENUM_AVAILABLE(_name, _e) \
+{ \
+ .name = (_name "_available"), \
+ .shared = IIO_SHARED_BY_TYPE, \
+ .read = iio_enum_available_read, \
+ .private = (uintptr_t)(_e), \
+}
+
+/**
+ * struct iio_mount_matrix - iio mounting matrix
+ * @rotation: 3 dimensional space rotation matrix defining sensor alignment with
+ * main hardware
+ */
+struct iio_mount_matrix {
+ const char *rotation[9];
+};
+
+ssize_t iio_show_mount_matrix(struct iio_dev *indio_dev, uintptr_t priv,
+ const struct iio_chan_spec *chan, char *buf);
+int of_iio_read_mount_matrix(const struct device *dev, const char *propname,
+ struct iio_mount_matrix *matrix);
+
+typedef const struct iio_mount_matrix *
+ (iio_get_mount_matrix_t)(const struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan);
+
+/**
+ * IIO_MOUNT_MATRIX() - Initialize mount matrix extended channel attribute
+ * @_shared: Whether the attribute is shared between all channels
+ * @_get: Pointer to an iio_get_mount_matrix_t accessor
+ */
+#define IIO_MOUNT_MATRIX(_shared, _get) \
+{ \
+ .name = "mount_matrix", \
+ .shared = (_shared), \
+ .read = iio_show_mount_matrix, \
+ .private = (uintptr_t)(_get), \
+}
+
+/**
+ * struct iio_event_spec - specification for a channel event
+ * @type: Type of the event
+ * @dir: Direction of the event
+ * @mask_separate: Bit mask of enum iio_event_info values. Attributes
+ * set in this mask will be registered per channel.
+ * @mask_shared_by_type: Bit mask of enum iio_event_info values. Attributes
+ * set in this mask will be shared by channel type.
+ * @mask_shared_by_dir: Bit mask of enum iio_event_info values. Attributes
+ * set in this mask will be shared by channel type and
+ * direction.
+ * @mask_shared_by_all: Bit mask of enum iio_event_info values. Attributes
+ * set in this mask will be shared by all channels.
+ */
+struct iio_event_spec {
+ enum iio_event_type type;
+ enum iio_event_direction dir;
+ unsigned long mask_separate;
+ unsigned long mask_shared_by_type;
+ unsigned long mask_shared_by_dir;
+ unsigned long mask_shared_by_all;
+};
+
+/**
+ * struct iio_chan_spec - specification of a single channel
+ * @type: What type of measurement is the channel making.
+ * @channel: What number do we wish to assign the channel.
+ * @channel2: If there is a second number for a differential
+ * channel then this is it. If modified is set then the
+ * value here specifies the modifier.
+ * @address: Driver specific identifier.
+ * @scan_index: Monotonic index to give ordering in scans when read
+ * from a buffer.
+ * @scan_type: struct describing the scan type
+ * @scan_type.sign: 's' or 'u' to specify signed or unsigned
+ * @scan_type.realbits: Number of valid bits of data
+ * @scan_type.storagebits: Realbits + padding
+ * @scan_type.shift: Shift right by this before masking out
+ * realbits.
+ * @scan_type.repeat: Number of times real/storage bits repeats.
+ * When the repeat element is more than 1, then
+ * the type element in sysfs will show a repeat
+ * value. Otherwise, the number of repetitions
+ * is omitted.
+ * @scan_type.endianness: little or big endian
+ * @info_mask_separate: What information is to be exported that is specific to
+ * this channel.
+ * @info_mask_separate_available: What availability information is to be
+ * exported that is specific to this channel.
+ * @info_mask_shared_by_type: What information is to be exported that is shared
+ * by all channels of the same type.
+ * @info_mask_shared_by_type_available: What availability information is to be
+ * exported that is shared by all channels of the same
+ * type.
+ * @info_mask_shared_by_dir: What information is to be exported that is shared
+ * by all channels of the same direction.
+ * @info_mask_shared_by_dir_available: What availability information is to be
+ * exported that is shared by all channels of the same
+ * direction.
+ * @info_mask_shared_by_all: What information is to be exported that is shared
+ * by all channels.
+ * @info_mask_shared_by_all_available: What availability information is to be
+ * exported that is shared by all channels.
+ * @event_spec: Array of events which should be registered for this
+ * channel.
+ * @num_event_specs: Size of the event_spec array.
+ * @ext_info: Array of extended info attributes for this channel.
+ * The array is NULL terminated, the last element should
+ * have its name field set to NULL.
+ * @extend_name: Allows labeling of channel attributes with an
+ * informative name. Note this has no effect codes etc,
+ * unlike modifiers.
+ * @datasheet_name: A name used in in-kernel mapping of channels. It should
+ * correspond to the first name that the channel is referred
+ * to by in the datasheet (e.g. IND), or the nearest
+ * possible compound name (e.g. IND-INC).
+ * @modified: Does a modifier apply to this channel. What these are
+ * depends on the channel type. Modifier is set in
+ * channel2. Examples are IIO_MOD_X for axial sensors about
+ * the 'x' axis.
+ * @indexed: Specify the channel has a numerical index. If not,
+ * the channel index number will be suppressed for sysfs
+ * attributes but not for event codes.
+ * @output: Channel is output.
+ * @differential: Channel is differential.
+ */
+struct iio_chan_spec {
+ enum iio_chan_type type;
+ int channel;
+ int channel2;
+ unsigned long address;
+ int scan_index;
+ struct {
+ char sign;
+ u8 realbits;
+ u8 storagebits;
+ u8 shift;
+ u8 repeat;
+ enum iio_endian endianness;
+ } scan_type;
+ long info_mask_separate;
+ long info_mask_separate_available;
+ long info_mask_shared_by_type;
+ long info_mask_shared_by_type_available;
+ long info_mask_shared_by_dir;
+ long info_mask_shared_by_dir_available;
+ long info_mask_shared_by_all;
+ long info_mask_shared_by_all_available;
+ const struct iio_event_spec *event_spec;
+ unsigned int num_event_specs;
+ const struct iio_chan_spec_ext_info *ext_info;
+ const char *extend_name;
+ const char *datasheet_name;
+ unsigned modified:1;
+ unsigned indexed:1;
+ unsigned output:1;
+ unsigned differential:1;
+};
+
+
+/**
+ * iio_channel_has_info() - Checks whether a channel supports a info attribute
+ * @chan: The channel to be queried
+ * @type: Type of the info attribute to be checked
+ *
+ * Returns true if the channels supports reporting values for the given info
+ * attribute type, false otherwise.
+ */
+static inline bool iio_channel_has_info(const struct iio_chan_spec *chan,
+ enum iio_chan_info_enum type)
+{
+ return (chan->info_mask_separate & BIT(type)) |
+ (chan->info_mask_shared_by_type & BIT(type)) |
+ (chan->info_mask_shared_by_dir & BIT(type)) |
+ (chan->info_mask_shared_by_all & BIT(type));
+}
+
+/**
+ * iio_channel_has_available() - Checks if a channel has an available attribute
+ * @chan: The channel to be queried
+ * @type: Type of the available attribute to be checked
+ *
+ * Returns true if the channel supports reporting available values for the
+ * given attribute type, false otherwise.
+ */
+static inline bool iio_channel_has_available(const struct iio_chan_spec *chan,
+ enum iio_chan_info_enum type)
+{
+ return (chan->info_mask_separate_available & BIT(type)) |
+ (chan->info_mask_shared_by_type_available & BIT(type)) |
+ (chan->info_mask_shared_by_dir_available & BIT(type)) |
+ (chan->info_mask_shared_by_all_available & BIT(type));
+}
+
+#define IIO_CHAN_SOFT_TIMESTAMP(_si) { \
+ .type = IIO_TIMESTAMP, \
+ .channel = -1, \
+ .scan_index = _si, \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = 64, \
+ .storagebits = 64, \
+ }, \
+}
+
+s64 iio_get_time_ns(const struct iio_dev *indio_dev);
+unsigned int iio_get_time_res(const struct iio_dev *indio_dev);
+
+/* Device operating modes */
+#define INDIO_DIRECT_MODE 0x01
+#define INDIO_BUFFER_TRIGGERED 0x02
+#define INDIO_BUFFER_SOFTWARE 0x04
+#define INDIO_BUFFER_HARDWARE 0x08
+#define INDIO_EVENT_TRIGGERED 0x10
+#define INDIO_HARDWARE_TRIGGERED 0x20
+
+#define INDIO_ALL_BUFFER_MODES \
+ (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE | INDIO_BUFFER_SOFTWARE)
+
+#define INDIO_ALL_TRIGGERED_MODES \
+ (INDIO_BUFFER_TRIGGERED \
+ | INDIO_EVENT_TRIGGERED \
+ | INDIO_HARDWARE_TRIGGERED)
+
+#define INDIO_MAX_RAW_ELEMENTS 4
+
+struct iio_trigger; /* forward declaration */
+
+/**
+ * struct iio_info - constant information about device
+ * @event_attrs: event control attributes
+ * @attrs: general purpose device attributes
+ * @read_raw: function to request a value from the device.
+ * mask specifies which value. Note 0 means a reading of
+ * the channel in question. Return value will specify the
+ * type of value returned by the device. val and val2 will
+ * contain the elements making up the returned value.
+ * @read_raw_multi: function to return values from the device.
+ * mask specifies which value. Note 0 means a reading of
+ * the channel in question. Return value will specify the
+ * type of value returned by the device. vals pointer
+ * contain the elements making up the returned value.
+ * max_len specifies maximum number of elements
+ * vals pointer can contain. val_len is used to return
+ * length of valid elements in vals.
+ * @read_avail: function to return the available values from the device.
+ * mask specifies which value. Note 0 means the available
+ * values for the channel in question. Return value
+ * specifies if a IIO_AVAIL_LIST or a IIO_AVAIL_RANGE is
+ * returned in vals. The type of the vals are returned in
+ * type and the number of vals is returned in length. For
+ * ranges, there are always three vals returned; min, step
+ * and max. For lists, all possible values are enumerated.
+ * @write_raw: function to write a value to the device.
+ * Parameters are the same as for read_raw.
+ * @write_raw_get_fmt: callback function to query the expected
+ * format/precision. If not set by the driver, write_raw
+ * returns IIO_VAL_INT_PLUS_MICRO.
+ * @read_event_config: find out if the event is enabled.
+ * @write_event_config: set if the event is enabled.
+ * @read_event_value: read a configuration value associated with the event.
+ * @write_event_value: write a configuration value for the event.
+ * @validate_trigger: function to validate the trigger when the
+ * current trigger gets changed.
+ * @update_scan_mode: function to configure device and scan buffer when
+ * channels have changed
+ * @debugfs_reg_access: function to read or write register value of device
+ * @of_xlate: function pointer to obtain channel specifier index.
+ * When #iio-cells is greater than '0', the driver could
+ * provide a custom of_xlate function that reads the
+ * *args* and returns the appropriate index in registered
+ * IIO channels array.
+ * @hwfifo_set_watermark: function pointer to set the current hardware
+ * fifo watermark level; see hwfifo_* entries in
+ * Documentation/ABI/testing/sysfs-bus-iio for details on
+ * how the hardware fifo operates
+ * @hwfifo_flush_to_buffer: function pointer to flush the samples stored
+ * in the hardware fifo to the device buffer. The driver
+ * should not flush more than count samples. The function
+ * must return the number of samples flushed, 0 if no
+ * samples were flushed or a negative integer if no samples
+ * were flushed and there was an error.
+ **/
+struct iio_info {
+ const struct attribute_group *event_attrs;
+ const struct attribute_group *attrs;
+
+ int (*read_raw)(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int *val,
+ int *val2,
+ long mask);
+
+ int (*read_raw_multi)(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int max_len,
+ int *vals,
+ int *val_len,
+ long mask);
+
+ int (*read_avail)(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ const int **vals,
+ int *type,
+ int *length,
+ long mask);
+
+ int (*write_raw)(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val,
+ int val2,
+ long mask);
+
+ int (*write_raw_get_fmt)(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ long mask);
+
+ int (*read_event_config)(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir);
+
+ int (*write_event_config)(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ int state);
+
+ int (*read_event_value)(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info, int *val, int *val2);
+
+ int (*write_event_value)(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir,
+ enum iio_event_info info, int val, int val2);
+
+ int (*validate_trigger)(struct iio_dev *indio_dev,
+ struct iio_trigger *trig);
+ int (*update_scan_mode)(struct iio_dev *indio_dev,
+ const unsigned long *scan_mask);
+ int (*debugfs_reg_access)(struct iio_dev *indio_dev,
+ unsigned reg, unsigned writeval,
+ unsigned *readval);
+ int (*of_xlate)(struct iio_dev *indio_dev,
+ const struct of_phandle_args *iiospec);
+ int (*hwfifo_set_watermark)(struct iio_dev *indio_dev, unsigned val);
+ int (*hwfifo_flush_to_buffer)(struct iio_dev *indio_dev,
+ unsigned count);
+};
+
+/**
+ * struct iio_buffer_setup_ops - buffer setup related callbacks
+ * @preenable: [DRIVER] function to run prior to marking buffer enabled
+ * @postenable: [DRIVER] function to run after marking buffer enabled
+ * @predisable: [DRIVER] function to run prior to marking buffer
+ * disabled
+ * @postdisable: [DRIVER] function to run after marking buffer disabled
+ * @validate_scan_mask: [DRIVER] function callback to check whether a given
+ * scan mask is valid for the device.
+ */
+struct iio_buffer_setup_ops {
+ int (*preenable)(struct iio_dev *);
+ int (*postenable)(struct iio_dev *);
+ int (*predisable)(struct iio_dev *);
+ int (*postdisable)(struct iio_dev *);
+ bool (*validate_scan_mask)(struct iio_dev *indio_dev,
+ const unsigned long *scan_mask);
+};
+
+/**
+ * struct iio_dev - industrial I/O device
+ * @id: [INTERN] used to identify device internally
+ * @driver_module: [INTERN] used to make it harder to undercut users
+ * @modes: [DRIVER] operating modes supported by device
+ * @currentmode: [DRIVER] current operating mode
+ * @dev: [DRIVER] device structure, should be assigned a parent
+ * and owner
+ * @event_interface: [INTERN] event chrdevs associated with interrupt lines
+ * @buffer: [DRIVER] any buffer present
+ * @buffer_list: [INTERN] list of all buffers currently attached
+ * @scan_bytes: [INTERN] num bytes captured to be fed to buffer demux
+ * @mlock: [DRIVER] lock used to prevent simultaneous device state
+ * changes
+ * @available_scan_masks: [DRIVER] optional array of allowed bitmasks
+ * @masklength: [INTERN] the length of the mask established from
+ * channels
+ * @active_scan_mask: [INTERN] union of all scan masks requested by buffers
+ * @scan_timestamp: [INTERN] set if any buffers have requested timestamp
+ * @scan_index_timestamp:[INTERN] cache of the index to the timestamp
+ * @trig: [INTERN] current device trigger (buffer modes)
+ * @trig_readonly: [INTERN] mark the current trigger immutable
+ * @pollfunc: [DRIVER] function run on trigger being received
+ * @pollfunc_event: [DRIVER] function run on events trigger being received
+ * @channels: [DRIVER] channel specification structure table
+ * @num_channels: [DRIVER] number of channels specified in @channels.
+ * @channel_attr_list: [INTERN] keep track of automatically created channel
+ * attributes
+ * @chan_attr_group: [INTERN] group for all attrs in base directory
+ * @name: [DRIVER] name of the device.
+ * @info: [DRIVER] callbacks and constant info from driver
+ * @clock_id: [INTERN] timestamping clock posix identifier
+ * @info_exist_lock: [INTERN] lock to prevent use during removal
+ * @setup_ops: [DRIVER] callbacks to call before and after buffer
+ * enable/disable
+ * @chrdev: [INTERN] associated character device
+ * @groups: [INTERN] attribute groups
+ * @groupcounter: [INTERN] index of next attribute group
+ * @flags: [INTERN] file ops related flags including busy flag.
+ * @debugfs_dentry: [INTERN] device specific debugfs dentry.
+ * @cached_reg_addr: [INTERN] cached register address for debugfs reads.
+ */
+struct iio_dev {
+ int id;
+ struct module *driver_module;
+
+ int modes;
+ int currentmode;
+ struct device dev;
+
+ struct iio_event_interface *event_interface;
+
+ struct iio_buffer *buffer;
+ struct list_head buffer_list;
+ int scan_bytes;
+ struct mutex mlock;
+
+ const unsigned long *available_scan_masks;
+ unsigned masklength;
+ const unsigned long *active_scan_mask;
+ bool scan_timestamp;
+ unsigned scan_index_timestamp;
+ struct iio_trigger *trig;
+ bool trig_readonly;
+ struct iio_poll_func *pollfunc;
+ struct iio_poll_func *pollfunc_event;
+
+ struct iio_chan_spec const *channels;
+ int num_channels;
+
+ struct list_head channel_attr_list;
+ struct attribute_group chan_attr_group;
+ const char *name;
+ const struct iio_info *info;
+ clockid_t clock_id;
+ struct mutex info_exist_lock;
+ const struct iio_buffer_setup_ops *setup_ops;
+ struct cdev chrdev;
+#define IIO_MAX_GROUPS 6
+ const struct attribute_group *groups[IIO_MAX_GROUPS + 1];
+ int groupcounter;
+
+ unsigned long flags;
+#if defined(CONFIG_DEBUG_FS)
+ struct dentry *debugfs_dentry;
+ unsigned cached_reg_addr;
+#endif
+};
+
+const struct iio_chan_spec
+*iio_find_channel_from_si(struct iio_dev *indio_dev, int si);
+/**
+ * iio_device_register() - register a device with the IIO subsystem
+ * @indio_dev: Device structure filled by the device driver
+ **/
+#define iio_device_register(indio_dev) \
+ __iio_device_register((indio_dev), THIS_MODULE)
+int __iio_device_register(struct iio_dev *indio_dev, struct module *this_mod);
+void iio_device_unregister(struct iio_dev *indio_dev);
+/**
+ * devm_iio_device_register - Resource-managed iio_device_register()
+ * @dev: Device to allocate iio_dev for
+ * @indio_dev: Device structure filled by the device driver
+ *
+ * Managed iio_device_register. The IIO device registered with this
+ * function is automatically unregistered on driver detach. This function
+ * calls iio_device_register() internally. Refer to that function for more
+ * information.
+ *
+ * If an iio_dev registered with this function needs to be unregistered
+ * separately, devm_iio_device_unregister() must be used.
+ *
+ * RETURNS:
+ * 0 on success, negative error number on failure.
+ */
+#define devm_iio_device_register(dev, indio_dev) \
+ __devm_iio_device_register((dev), (indio_dev), THIS_MODULE);
+int __devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev,
+ struct module *this_mod);
+void devm_iio_device_unregister(struct device *dev, struct iio_dev *indio_dev);
+int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp);
+int iio_device_claim_direct_mode(struct iio_dev *indio_dev);
+void iio_device_release_direct_mode(struct iio_dev *indio_dev);
+
+extern struct bus_type iio_bus_type;
+
+/**
+ * iio_device_put() - reference counted deallocation of struct device
+ * @indio_dev: IIO device structure containing the device
+ **/
+static inline void iio_device_put(struct iio_dev *indio_dev)
+{
+ if (indio_dev)
+ put_device(&indio_dev->dev);
+}
+
+/**
+ * iio_device_get_clock() - Retrieve current timestamping clock for the device
+ * @indio_dev: IIO device structure containing the device
+ */
+static inline clockid_t iio_device_get_clock(const struct iio_dev *indio_dev)
+{
+ return indio_dev->clock_id;
+}
+
+/**
+ * dev_to_iio_dev() - Get IIO device struct from a device struct
+ * @dev: The device embedded in the IIO device
+ *
+ * Note: The device must be a IIO device, otherwise the result is undefined.
+ */
+static inline struct iio_dev *dev_to_iio_dev(struct device *dev)
+{
+ return container_of(dev, struct iio_dev, dev);
+}
+
+/**
+ * iio_device_get() - increment reference count for the device
+ * @indio_dev: IIO device structure
+ *
+ * Returns: The passed IIO device
+ **/
+static inline struct iio_dev *iio_device_get(struct iio_dev *indio_dev)
+{
+ return indio_dev ? dev_to_iio_dev(get_device(&indio_dev->dev)) : NULL;
+}
+
+
+/**
+ * iio_device_set_drvdata() - Set device driver data
+ * @indio_dev: IIO device structure
+ * @data: Driver specific data
+ *
+ * Allows to attach an arbitrary pointer to an IIO device, which can later be
+ * retrieved by iio_device_get_drvdata().
+ */
+static inline void iio_device_set_drvdata(struct iio_dev *indio_dev, void *data)
+{
+ dev_set_drvdata(&indio_dev->dev, data);
+}
+
+/**
+ * iio_device_get_drvdata() - Get device driver data
+ * @indio_dev: IIO device structure
+ *
+ * Returns the data previously set with iio_device_set_drvdata()
+ */
+static inline void *iio_device_get_drvdata(struct iio_dev *indio_dev)
+{
+ return dev_get_drvdata(&indio_dev->dev);
+}
+
+/* Can we make this smaller? */
+#define IIO_ALIGN L1_CACHE_BYTES
+struct iio_dev *iio_device_alloc(int sizeof_priv);
+
+static inline void *iio_priv(const struct iio_dev *indio_dev)
+{
+ return (char *)indio_dev + ALIGN(sizeof(struct iio_dev), IIO_ALIGN);
+}
+
+static inline struct iio_dev *iio_priv_to_dev(void *priv)
+{
+ return (struct iio_dev *)((char *)priv -
+ ALIGN(sizeof(struct iio_dev), IIO_ALIGN));
+}
+
+void iio_device_free(struct iio_dev *indio_dev);
+int devm_iio_device_match(struct device *dev, void *res, void *data);
+struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv);
+void devm_iio_device_free(struct device *dev, struct iio_dev *indio_dev);
+struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
+ const char *fmt, ...);
+void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig);
+
+/**
+ * iio_buffer_enabled() - helper function to test if the buffer is enabled
+ * @indio_dev: IIO device structure for device
+ **/
+static inline bool iio_buffer_enabled(struct iio_dev *indio_dev)
+{
+ return indio_dev->currentmode
+ & (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE |
+ INDIO_BUFFER_SOFTWARE);
+}
+
+/**
+ * iio_get_debugfs_dentry() - helper function to get the debugfs_dentry
+ * @indio_dev: IIO device structure for device
+ **/
+#if defined(CONFIG_DEBUG_FS)
+static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev)
+{
+ return indio_dev->debugfs_dentry;
+}
+#else
+static inline struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev)
+{
+ return NULL;
+}
+#endif
+
+ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
+
+int iio_str_to_fixpoint(const char *str, int fract_mult, int *integer,
+ int *fract);
+
+/**
+ * IIO_DEGREE_TO_RAD() - Convert degree to rad
+ * @deg: A value in degree
+ *
+ * Returns the given value converted from degree to rad
+ */
+#define IIO_DEGREE_TO_RAD(deg) (((deg) * 314159ULL + 9000000ULL) / 18000000ULL)
+
+/**
+ * IIO_RAD_TO_DEGREE() - Convert rad to degree
+ * @rad: A value in rad
+ *
+ * Returns the given value converted from rad to degree
+ */
+#define IIO_RAD_TO_DEGREE(rad) \
+ (((rad) * 18000000ULL + 314159ULL / 2) / 314159ULL)
+
+/**
+ * IIO_G_TO_M_S_2() - Convert g to meter / second**2
+ * @g: A value in g
+ *
+ * Returns the given value converted from g to meter / second**2
+ */
+#define IIO_G_TO_M_S_2(g) ((g) * 980665ULL / 100000ULL)
+
+/**
+ * IIO_M_S_2_TO_G() - Convert meter / second**2 to g
+ * @ms2: A value in meter / second**2
+ *
+ * Returns the given value converted from meter / second**2 to g
+ */
+#define IIO_M_S_2_TO_G(ms2) (((ms2) * 100000ULL + 980665ULL / 2) / 980665ULL)
+
+#endif /* _INDUSTRIAL_IO_H_ */
diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
new file mode 100644
index 0000000..360da7d
--- /dev/null
+++ b/include/linux/iio/imu/adis.h
@@ -0,0 +1,284 @@
+/*
+ * Common library for ADIS16XXX devices
+ *
+ * Copyright 2012 Analog Devices Inc.
+ * Author: Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __IIO_ADIS_H__
+#define __IIO_ADIS_H__
+
+#include <linux/spi/spi.h>
+#include <linux/interrupt.h>
+#include <linux/iio/types.h>
+
+#define ADIS_WRITE_REG(reg) ((0x80 | (reg)))
+#define ADIS_READ_REG(reg) ((reg) & 0x7f)
+
+#define ADIS_PAGE_SIZE 0x80
+#define ADIS_REG_PAGE_ID 0x00
+
+struct adis;
+
+/**
+ * struct adis_data - ADIS chip variant specific data
+ * @read_delay: SPI delay for read operations in us
+ * @write_delay: SPI delay for write operations in us
+ * @glob_cmd_reg: Register address of the GLOB_CMD register
+ * @msc_ctrl_reg: Register address of the MSC_CTRL register
+ * @diag_stat_reg: Register address of the DIAG_STAT register
+ * @status_error_msgs: Array of error messgaes
+ * @status_error_mask:
+ */
+struct adis_data {
+ unsigned int read_delay;
+ unsigned int write_delay;
+
+ unsigned int glob_cmd_reg;
+ unsigned int msc_ctrl_reg;
+ unsigned int diag_stat_reg;
+
+ unsigned int self_test_mask;
+ bool self_test_no_autoclear;
+ unsigned int startup_delay;
+
+ const char * const *status_error_msgs;
+ unsigned int status_error_mask;
+
+ int (*enable_irq)(struct adis *adis, bool enable);
+
+ bool has_paging;
+};
+
+struct adis {
+ struct spi_device *spi;
+ struct iio_trigger *trig;
+
+ const struct adis_data *data;
+
+ struct mutex txrx_lock;
+ struct spi_message msg;
+ struct spi_transfer *xfer;
+ unsigned int current_page;
+ void *buffer;
+
+ uint8_t tx[10] ____cacheline_aligned;
+ uint8_t rx[4];
+};
+
+int adis_init(struct adis *adis, struct iio_dev *indio_dev,
+ struct spi_device *spi, const struct adis_data *data);
+int adis_reset(struct adis *adis);
+
+int adis_write_reg(struct adis *adis, unsigned int reg,
+ unsigned int val, unsigned int size);
+int adis_read_reg(struct adis *adis, unsigned int reg,
+ unsigned int *val, unsigned int size);
+
+/**
+ * adis_write_reg_8() - Write single byte to a register
+ * @adis: The adis device
+ * @reg: The address of the register to be written
+ * @value: The value to write
+ */
+static inline int adis_write_reg_8(struct adis *adis, unsigned int reg,
+ uint8_t val)
+{
+ return adis_write_reg(adis, reg, val, 1);
+}
+
+/**
+ * adis_write_reg_16() - Write 2 bytes to a pair of registers
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @value: Value to be written
+ */
+static inline int adis_write_reg_16(struct adis *adis, unsigned int reg,
+ uint16_t val)
+{
+ return adis_write_reg(adis, reg, val, 2);
+}
+
+/**
+ * adis_write_reg_32() - write 4 bytes to four registers
+ * @adis: The adis device
+ * @reg: The address of the lower of the four register
+ * @value: Value to be written
+ */
+static inline int adis_write_reg_32(struct adis *adis, unsigned int reg,
+ uint32_t val)
+{
+ return adis_write_reg(adis, reg, val, 4);
+}
+
+/**
+ * adis_read_reg_16() - read 2 bytes from a 16-bit register
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @val: The value read back from the device
+ */
+static inline int adis_read_reg_16(struct adis *adis, unsigned int reg,
+ uint16_t *val)
+{
+ unsigned int tmp;
+ int ret;
+
+ ret = adis_read_reg(adis, reg, &tmp, 2);
+ *val = tmp;
+
+ return ret;
+}
+
+/**
+ * adis_read_reg_32() - read 4 bytes from a 32-bit register
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @val: The value read back from the device
+ */
+static inline int adis_read_reg_32(struct adis *adis, unsigned int reg,
+ uint32_t *val)
+{
+ unsigned int tmp;
+ int ret;
+
+ ret = adis_read_reg(adis, reg, &tmp, 4);
+ *val = tmp;
+
+ return ret;
+}
+
+int adis_enable_irq(struct adis *adis, bool enable);
+int adis_check_status(struct adis *adis);
+
+int adis_initial_startup(struct adis *adis);
+
+int adis_single_conversion(struct iio_dev *indio_dev,
+ const struct iio_chan_spec *chan, unsigned int error_mask,
+ int *val);
+
+#define ADIS_VOLTAGE_CHAN(addr, si, chan, name, info_all, bits) { \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .channel = (chan), \
+ .extend_name = name, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_SCALE), \
+ .info_mask_shared_by_all = info_all, \
+ .address = (addr), \
+ .scan_index = (si), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+}
+
+#define ADIS_SUPPLY_CHAN(addr, si, info_all, bits) \
+ ADIS_VOLTAGE_CHAN(addr, si, 0, "supply", info_all, bits)
+
+#define ADIS_AUX_ADC_CHAN(addr, si, info_all, bits) \
+ ADIS_VOLTAGE_CHAN(addr, si, 1, NULL, info_all, bits)
+
+#define ADIS_TEMP_CHAN(addr, si, info_all, bits) { \
+ .type = IIO_TEMP, \
+ .indexed = 1, \
+ .channel = 0, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_SCALE) | \
+ BIT(IIO_CHAN_INFO_OFFSET), \
+ .info_mask_shared_by_all = info_all, \
+ .address = (addr), \
+ .scan_index = (si), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+}
+
+#define ADIS_MOD_CHAN(_type, mod, addr, si, info_sep, info_all, bits) { \
+ .type = (_type), \
+ .modified = 1, \
+ .channel2 = IIO_MOD_ ## mod, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ info_sep, \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .info_mask_shared_by_all = info_all, \
+ .address = (addr), \
+ .scan_index = (si), \
+ .scan_type = { \
+ .sign = 's', \
+ .realbits = (bits), \
+ .storagebits = 16, \
+ .endianness = IIO_BE, \
+ }, \
+}
+
+#define ADIS_ACCEL_CHAN(mod, addr, si, info_sep, info_all, bits) \
+ ADIS_MOD_CHAN(IIO_ACCEL, mod, addr, si, info_sep, info_all, bits)
+
+#define ADIS_GYRO_CHAN(mod, addr, si, info_sep, info_all, bits) \
+ ADIS_MOD_CHAN(IIO_ANGL_VEL, mod, addr, si, info_sep, info_all, bits)
+
+#define ADIS_INCLI_CHAN(mod, addr, si, info_sep, info_all, bits) \
+ ADIS_MOD_CHAN(IIO_INCLI, mod, addr, si, info_sep, info_all, bits)
+
+#define ADIS_ROT_CHAN(mod, addr, si, info_sep, info_all, bits) \
+ ADIS_MOD_CHAN(IIO_ROT, mod, addr, si, info_sep, info_all, bits)
+
+#ifdef CONFIG_IIO_ADIS_LIB_BUFFER
+
+int adis_setup_buffer_and_trigger(struct adis *adis,
+ struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *));
+void adis_cleanup_buffer_and_trigger(struct adis *adis,
+ struct iio_dev *indio_dev);
+
+int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev);
+void adis_remove_trigger(struct adis *adis);
+
+int adis_update_scan_mode(struct iio_dev *indio_dev,
+ const unsigned long *scan_mask);
+
+#else /* CONFIG_IIO_BUFFER */
+
+static inline int adis_setup_buffer_and_trigger(struct adis *adis,
+ struct iio_dev *indio_dev, irqreturn_t (*trigger_handler)(int, void *))
+{
+ return 0;
+}
+
+static inline void adis_cleanup_buffer_and_trigger(struct adis *adis,
+ struct iio_dev *indio_dev)
+{
+}
+
+static inline int adis_probe_trigger(struct adis *adis,
+ struct iio_dev *indio_dev)
+{
+ return 0;
+}
+
+static inline void adis_remove_trigger(struct adis *adis)
+{
+}
+
+#define adis_update_scan_mode NULL
+
+#endif /* CONFIG_IIO_BUFFER */
+
+#ifdef CONFIG_DEBUG_FS
+
+int adis_debugfs_reg_access(struct iio_dev *indio_dev,
+ unsigned int reg, unsigned int writeval, unsigned int *readval);
+
+#else
+
+#define adis_debugfs_reg_access NULL
+
+#endif
+
+#endif
diff --git a/include/linux/iio/kfifo_buf.h b/include/linux/iio/kfifo_buf.h
new file mode 100644
index 0000000..764659e
--- /dev/null
+++ b/include/linux/iio/kfifo_buf.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_IIO_KFIFO_BUF_H__
+#define __LINUX_IIO_KFIFO_BUF_H__
+
+struct iio_buffer;
+struct device;
+
+struct iio_buffer *iio_kfifo_allocate(void);
+void iio_kfifo_free(struct iio_buffer *r);
+
+struct iio_buffer *devm_iio_kfifo_allocate(struct device *dev);
+void devm_iio_kfifo_free(struct device *dev, struct iio_buffer *r);
+
+#endif
diff --git a/include/linux/iio/machine.h b/include/linux/iio/machine.h
new file mode 100644
index 0000000..5e1cfa7
--- /dev/null
+++ b/include/linux/iio/machine.h
@@ -0,0 +1,38 @@
+/*
+ * Industrial I/O in kernel access map definitions for board files.
+ *
+ * Copyright (c) 2011 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef __LINUX_IIO_MACHINE_H__
+#define __LINUX_IIO_MACHINE_H__
+
+/**
+ * struct iio_map - description of link between consumer and device channels
+ * @adc_channel_label: Label used to identify the channel on the provider.
+ * This is matched against the datasheet_name element
+ * of struct iio_chan_spec.
+ * @consumer_dev_name: Name to uniquely identify the consumer device.
+ * @consumer_channel: Unique name used to identify the channel on the
+ * consumer side.
+ * @consumer_data: Data about the channel for use by the consumer driver.
+ */
+struct iio_map {
+ const char *adc_channel_label;
+ const char *consumer_dev_name;
+ const char *consumer_channel;
+ void *consumer_data;
+};
+
+#define IIO_MAP(_provider_channel, _consumer_dev_name, _consumer_channel) \
+{ \
+ .adc_channel_label = _provider_channel, \
+ .consumer_dev_name = _consumer_dev_name, \
+ .consumer_channel = _consumer_channel, \
+}
+
+#endif
diff --git a/include/linux/iio/magnetometer/ak8975.h b/include/linux/iio/magnetometer/ak8975.h
new file mode 100644
index 0000000..ac9366f
--- /dev/null
+++ b/include/linux/iio/magnetometer/ak8975.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __IIO_MAGNETOMETER_AK8975_H__
+#define __IIO_MAGNETOMETER_AK8975_H__
+
+#include <linux/iio/iio.h>
+
+/**
+ * struct ak8975_platform_data - AK8975 magnetometer driver platform data
+ * @eoc_gpio: data ready event gpio
+ * @orientation: mounting matrix relative to main hardware
+ */
+struct ak8975_platform_data {
+ int eoc_gpio;
+ struct iio_mount_matrix orientation;
+};
+
+#endif
diff --git a/include/linux/iio/sw_device.h b/include/linux/iio/sw_device.h
new file mode 100644
index 0000000..8642b91
--- /dev/null
+++ b/include/linux/iio/sw_device.h
@@ -0,0 +1,70 @@
+/*
+ * Industrial I/O software device interface
+ *
+ * Copyright (c) 2016 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef __IIO_SW_DEVICE
+#define __IIO_SW_DEVICE
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/configfs.h>
+
+#define module_iio_sw_device_driver(__iio_sw_device_type) \
+ module_driver(__iio_sw_device_type, iio_register_sw_device_type, \
+ iio_unregister_sw_device_type)
+
+struct iio_sw_device_ops;
+
+struct iio_sw_device_type {
+ const char *name;
+ struct module *owner;
+ const struct iio_sw_device_ops *ops;
+ struct list_head list;
+ struct config_group *group;
+};
+
+struct iio_sw_device {
+ struct iio_dev *device;
+ struct iio_sw_device_type *device_type;
+ struct config_group group;
+};
+
+struct iio_sw_device_ops {
+ struct iio_sw_device* (*probe)(const char *);
+ int (*remove)(struct iio_sw_device *);
+};
+
+static inline
+struct iio_sw_device *to_iio_sw_device(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct iio_sw_device,
+ group);
+}
+
+int iio_register_sw_device_type(struct iio_sw_device_type *dt);
+void iio_unregister_sw_device_type(struct iio_sw_device_type *dt);
+
+struct iio_sw_device *iio_sw_device_create(const char *, const char *);
+void iio_sw_device_destroy(struct iio_sw_device *);
+
+int iio_sw_device_type_configfs_register(struct iio_sw_device_type *dt);
+void iio_sw_device_type_configfs_unregister(struct iio_sw_device_type *dt);
+
+static inline
+void iio_swd_group_init_type_name(struct iio_sw_device *d,
+ const char *name,
+ const struct config_item_type *type)
+{
+#if IS_ENABLED(CONFIG_CONFIGFS_FS)
+ config_group_init_type_name(&d->group, name, type);
+#endif
+}
+
+#endif /* __IIO_SW_DEVICE */
diff --git a/include/linux/iio/sw_trigger.h b/include/linux/iio/sw_trigger.h
new file mode 100644
index 0000000..0c43738
--- /dev/null
+++ b/include/linux/iio/sw_trigger.h
@@ -0,0 +1,70 @@
+/*
+ * Industrial I/O software trigger interface
+ *
+ * Copyright (c) 2015 Intel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef __IIO_SW_TRIGGER
+#define __IIO_SW_TRIGGER
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/configfs.h>
+
+#define module_iio_sw_trigger_driver(__iio_sw_trigger_type) \
+ module_driver(__iio_sw_trigger_type, iio_register_sw_trigger_type, \
+ iio_unregister_sw_trigger_type)
+
+struct iio_sw_trigger_ops;
+
+struct iio_sw_trigger_type {
+ const char *name;
+ struct module *owner;
+ const struct iio_sw_trigger_ops *ops;
+ struct list_head list;
+ struct config_group *group;
+};
+
+struct iio_sw_trigger {
+ struct iio_trigger *trigger;
+ struct iio_sw_trigger_type *trigger_type;
+ struct config_group group;
+};
+
+struct iio_sw_trigger_ops {
+ struct iio_sw_trigger* (*probe)(const char *);
+ int (*remove)(struct iio_sw_trigger *);
+};
+
+static inline
+struct iio_sw_trigger *to_iio_sw_trigger(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct iio_sw_trigger,
+ group);
+}
+
+int iio_register_sw_trigger_type(struct iio_sw_trigger_type *tt);
+void iio_unregister_sw_trigger_type(struct iio_sw_trigger_type *tt);
+
+struct iio_sw_trigger *iio_sw_trigger_create(const char *, const char *);
+void iio_sw_trigger_destroy(struct iio_sw_trigger *);
+
+int iio_sw_trigger_type_configfs_register(struct iio_sw_trigger_type *tt);
+void iio_sw_trigger_type_configfs_unregister(struct iio_sw_trigger_type *tt);
+
+static inline
+void iio_swt_group_init_type_name(struct iio_sw_trigger *t,
+ const char *name,
+ const struct config_item_type *type)
+{
+#if IS_ENABLED(CONFIG_CONFIGFS_FS)
+ config_group_init_type_name(&t->group, name, type);
+#endif
+}
+
+#endif /* __IIO_SW_TRIGGER */
diff --git a/include/linux/iio/sysfs.h b/include/linux/iio/sysfs.h
new file mode 100644
index 0000000..ce9426c
--- /dev/null
+++ b/include/linux/iio/sysfs.h
@@ -0,0 +1,152 @@
+/* The industrial I/O core
+ *
+ *Copyright (c) 2008 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * General attributes
+ */
+
+#ifndef _INDUSTRIAL_IO_SYSFS_H_
+#define _INDUSTRIAL_IO_SYSFS_H_
+
+struct iio_chan_spec;
+
+/**
+ * struct iio_dev_attr - iio specific device attribute
+ * @dev_attr: underlying device attribute
+ * @address: associated register address
+ * @l: list head for maintaining list of dynamically created attrs
+ * @c: specification for the underlying channel
+ */
+struct iio_dev_attr {
+ struct device_attribute dev_attr;
+ u64 address;
+ struct list_head l;
+ struct iio_chan_spec const *c;
+};
+
+#define to_iio_dev_attr(_dev_attr) \
+ container_of(_dev_attr, struct iio_dev_attr, dev_attr)
+
+ssize_t iio_read_const_attr(struct device *dev,
+ struct device_attribute *attr,
+ char *len);
+
+/**
+ * struct iio_const_attr - constant device specific attribute
+ * often used for things like available modes
+ * @string: attribute string
+ * @dev_attr: underlying device attribute
+ */
+struct iio_const_attr {
+ const char *string;
+ struct device_attribute dev_attr;
+};
+
+#define to_iio_const_attr(_dev_attr) \
+ container_of(_dev_attr, struct iio_const_attr, dev_attr)
+
+/* Some attributes will be hard coded (device dependent) and not require an
+ address, in these cases pass a negative */
+#define IIO_ATTR(_name, _mode, _show, _store, _addr) \
+ { .dev_attr = __ATTR(_name, _mode, _show, _store), \
+ .address = _addr }
+
+#define IIO_ATTR_RO(_name, _addr) \
+ { .dev_attr = __ATTR_RO(_name), \
+ .address = _addr }
+
+#define IIO_ATTR_WO(_name, _addr) \
+ { .dev_attr = __ATTR_WO(_name), \
+ .address = _addr }
+
+#define IIO_ATTR_RW(_name, _addr) \
+ { .dev_attr = __ATTR_RW(_name), \
+ .address = _addr }
+
+#define IIO_DEVICE_ATTR(_name, _mode, _show, _store, _addr) \
+ struct iio_dev_attr iio_dev_attr_##_name \
+ = IIO_ATTR(_name, _mode, _show, _store, _addr)
+
+#define IIO_DEVICE_ATTR_RO(_name, _addr) \
+ struct iio_dev_attr iio_dev_attr_##_name \
+ = IIO_ATTR_RO(_name, _addr)
+
+#define IIO_DEVICE_ATTR_WO(_name, _addr) \
+ struct iio_dev_attr iio_dev_attr_##_name \
+ = IIO_ATTR_WO(_name, _addr)
+
+#define IIO_DEVICE_ATTR_RW(_name, _addr) \
+ struct iio_dev_attr iio_dev_attr_##_name \
+ = IIO_ATTR_RW(_name, _addr)
+
+#define IIO_DEVICE_ATTR_NAMED(_vname, _name, _mode, _show, _store, _addr) \
+ struct iio_dev_attr iio_dev_attr_##_vname \
+ = IIO_ATTR(_name, _mode, _show, _store, _addr)
+
+#define IIO_CONST_ATTR(_name, _string) \
+ struct iio_const_attr iio_const_attr_##_name \
+ = { .string = _string, \
+ .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)}
+
+#define IIO_CONST_ATTR_NAMED(_vname, _name, _string) \
+ struct iio_const_attr iio_const_attr_##_vname \
+ = { .string = _string, \
+ .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)}
+
+/* Generic attributes of onetype or another */
+
+/**
+ * IIO_DEV_ATTR_SAMP_FREQ - sets any internal clock frequency
+ * @_mode: sysfs file mode/permissions
+ * @_show: output method for the attribute
+ * @_store: input method for the attribute
+ **/
+#define IIO_DEV_ATTR_SAMP_FREQ(_mode, _show, _store) \
+ IIO_DEVICE_ATTR(sampling_frequency, _mode, _show, _store, 0)
+
+/**
+ * IIO_DEV_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies
+ * @_show: output method for the attribute
+ *
+ * May be mode dependent on some devices
+ **/
+#define IIO_DEV_ATTR_SAMP_FREQ_AVAIL(_show) \
+ IIO_DEVICE_ATTR(sampling_frequency_available, S_IRUGO, _show, NULL, 0)
+/**
+ * IIO_CONST_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies
+ * @_string: frequency string for the attribute
+ *
+ * Constant version
+ **/
+#define IIO_CONST_ATTR_SAMP_FREQ_AVAIL(_string) \
+ IIO_CONST_ATTR(sampling_frequency_available, _string)
+
+/**
+ * IIO_DEV_ATTR_INT_TIME_AVAIL - list available integration times
+ * @_show: output method for the attribute
+ **/
+#define IIO_DEV_ATTR_INT_TIME_AVAIL(_show) \
+ IIO_DEVICE_ATTR(integration_time_available, S_IRUGO, _show, NULL, 0)
+/**
+ * IIO_CONST_ATTR_INT_TIME_AVAIL - list available integration times
+ * @_string: frequency string for the attribute
+ *
+ * Constant version
+ **/
+#define IIO_CONST_ATTR_INT_TIME_AVAIL(_string) \
+ IIO_CONST_ATTR(integration_time_available, _string)
+
+#define IIO_DEV_ATTR_TEMP_RAW(_show) \
+ IIO_DEVICE_ATTR(in_temp_raw, S_IRUGO, _show, NULL, 0)
+
+#define IIO_CONST_ATTR_TEMP_OFFSET(_string) \
+ IIO_CONST_ATTR(in_temp_offset, _string)
+
+#define IIO_CONST_ATTR_TEMP_SCALE(_string) \
+ IIO_CONST_ATTR(in_temp_scale, _string)
+
+#endif /* _INDUSTRIAL_IO_SYSFS_H_ */
diff --git a/include/linux/iio/timer/stm32-lptim-trigger.h b/include/linux/iio/timer/stm32-lptim-trigger.h
new file mode 100644
index 0000000..464458d
--- /dev/null
+++ b/include/linux/iio/timer/stm32-lptim-trigger.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) STMicroelectronics 2017
+ *
+ * Author: Fabrice Gasnier <fabrice.gasnier@st.com>
+ *
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#ifndef _STM32_LPTIM_TRIGGER_H_
+#define _STM32_LPTIM_TRIGGER_H_
+
+#include <linux/iio/iio.h>
+#include <linux/iio/trigger.h>
+
+#define LPTIM1_OUT "lptim1_out"
+#define LPTIM2_OUT "lptim2_out"
+#define LPTIM3_OUT "lptim3_out"
+
+#if IS_REACHABLE(CONFIG_IIO_STM32_LPTIMER_TRIGGER)
+bool is_stm32_lptim_trigger(struct iio_trigger *trig);
+#else
+static inline bool is_stm32_lptim_trigger(struct iio_trigger *trig)
+{
+#if IS_ENABLED(CONFIG_IIO_STM32_LPTIMER_TRIGGER)
+ pr_warn_once("stm32 lptim_trigger not linked in\n");
+#endif
+ return false;
+}
+#endif
+#endif
diff --git a/include/linux/iio/timer/stm32-timer-trigger.h b/include/linux/iio/timer/stm32-timer-trigger.h
new file mode 100644
index 0000000..d68add8
--- /dev/null
+++ b/include/linux/iio/timer/stm32-timer-trigger.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) STMicroelectronics 2016
+ *
+ * Author: Benjamin Gaignard <benjamin.gaignard@st.com>
+ *
+ * License terms: GNU General Public License (GPL), version 2
+ */
+
+#ifndef _STM32_TIMER_TRIGGER_H_
+#define _STM32_TIMER_TRIGGER_H_
+
+#define TIM1_TRGO "tim1_trgo"
+#define TIM1_TRGO2 "tim1_trgo2"
+#define TIM1_CH1 "tim1_ch1"
+#define TIM1_CH2 "tim1_ch2"
+#define TIM1_CH3 "tim1_ch3"
+#define TIM1_CH4 "tim1_ch4"
+
+#define TIM2_TRGO "tim2_trgo"
+#define TIM2_CH1 "tim2_ch1"
+#define TIM2_CH2 "tim2_ch2"
+#define TIM2_CH3 "tim2_ch3"
+#define TIM2_CH4 "tim2_ch4"
+
+#define TIM3_TRGO "tim3_trgo"
+#define TIM3_CH1 "tim3_ch1"
+#define TIM3_CH2 "tim3_ch2"
+#define TIM3_CH3 "tim3_ch3"
+#define TIM3_CH4 "tim3_ch4"
+
+#define TIM4_TRGO "tim4_trgo"
+#define TIM4_CH1 "tim4_ch1"
+#define TIM4_CH2 "tim4_ch2"
+#define TIM4_CH3 "tim4_ch3"
+#define TIM4_CH4 "tim4_ch4"
+
+#define TIM5_TRGO "tim5_trgo"
+#define TIM5_CH1 "tim5_ch1"
+#define TIM5_CH2 "tim5_ch2"
+#define TIM5_CH3 "tim5_ch3"
+#define TIM5_CH4 "tim5_ch4"
+
+#define TIM6_TRGO "tim6_trgo"
+
+#define TIM7_TRGO "tim7_trgo"
+
+#define TIM8_TRGO "tim8_trgo"
+#define TIM8_TRGO2 "tim8_trgo2"
+#define TIM8_CH1 "tim8_ch1"
+#define TIM8_CH2 "tim8_ch2"
+#define TIM8_CH3 "tim8_ch3"
+#define TIM8_CH4 "tim8_ch4"
+
+#define TIM9_TRGO "tim9_trgo"
+#define TIM9_CH1 "tim9_ch1"
+#define TIM9_CH2 "tim9_ch2"
+
+#define TIM10_OC1 "tim10_oc1"
+
+#define TIM11_OC1 "tim11_oc1"
+
+#define TIM12_TRGO "tim12_trgo"
+#define TIM12_CH1 "tim12_ch1"
+#define TIM12_CH2 "tim12_ch2"
+
+#define TIM13_OC1 "tim13_oc1"
+
+#define TIM14_OC1 "tim14_oc1"
+
+#define TIM15_TRGO "tim15_trgo"
+
+#define TIM16_OC1 "tim16_oc1"
+
+#define TIM17_OC1 "tim17_oc1"
+
+bool is_stm32_timer_trigger(struct iio_trigger *trig);
+
+#endif
diff --git a/include/linux/iio/trigger.h b/include/linux/iio/trigger.h
new file mode 100644
index 0000000..b19b720
--- /dev/null
+++ b/include/linux/iio/trigger.h
@@ -0,0 +1,186 @@
+/* The industrial I/O core, trigger handling functions
+ *
+ * Copyright (c) 2008 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/atomic.h>
+
+#ifndef _IIO_TRIGGER_H_
+#define _IIO_TRIGGER_H_
+
+#ifdef CONFIG_IIO_TRIGGER
+struct iio_subirq {
+ bool enabled;
+};
+
+struct iio_dev;
+struct iio_trigger;
+
+/**
+ * struct iio_trigger_ops - operations structure for an iio_trigger.
+ * @set_trigger_state: switch on/off the trigger on demand
+ * @try_reenable: function to reenable the trigger when the
+ * use count is zero (may be NULL)
+ * @validate_device: function to validate the device when the
+ * current trigger gets changed.
+ *
+ * This is typically static const within a driver and shared by
+ * instances of a given device.
+ **/
+struct iio_trigger_ops {
+ int (*set_trigger_state)(struct iio_trigger *trig, bool state);
+ int (*try_reenable)(struct iio_trigger *trig);
+ int (*validate_device)(struct iio_trigger *trig,
+ struct iio_dev *indio_dev);
+};
+
+
+/**
+ * struct iio_trigger - industrial I/O trigger device
+ * @ops: [DRIVER] operations structure
+ * @owner: [INTERN] owner of this driver module
+ * @id: [INTERN] unique id number
+ * @name: [DRIVER] unique name
+ * @dev: [DRIVER] associated device (if relevant)
+ * @list: [INTERN] used in maintenance of global trigger list
+ * @alloc_list: [DRIVER] used for driver specific trigger list
+ * @use_count: [INTERN] use count for the trigger.
+ * @subirq_chip: [INTERN] associate 'virtual' irq chip.
+ * @subirq_base: [INTERN] base number for irqs provided by trigger.
+ * @subirqs: [INTERN] information about the 'child' irqs.
+ * @pool: [INTERN] bitmap of irqs currently in use.
+ * @pool_lock: [INTERN] protection of the irq pool.
+ * @attached_own_device:[INTERN] if we are using our own device as trigger,
+ * i.e. if we registered a poll function to the same
+ * device as the one providing the trigger.
+ **/
+struct iio_trigger {
+ const struct iio_trigger_ops *ops;
+ struct module *owner;
+ int id;
+ const char *name;
+ struct device dev;
+
+ struct list_head list;
+ struct list_head alloc_list;
+ atomic_t use_count;
+
+ struct irq_chip subirq_chip;
+ int subirq_base;
+
+ struct iio_subirq subirqs[CONFIG_IIO_CONSUMERS_PER_TRIGGER];
+ unsigned long pool[BITS_TO_LONGS(CONFIG_IIO_CONSUMERS_PER_TRIGGER)];
+ struct mutex pool_lock;
+ bool attached_own_device;
+};
+
+
+static inline struct iio_trigger *to_iio_trigger(struct device *d)
+{
+ return container_of(d, struct iio_trigger, dev);
+}
+
+static inline void iio_trigger_put(struct iio_trigger *trig)
+{
+ module_put(trig->owner);
+ put_device(&trig->dev);
+}
+
+static inline struct iio_trigger *iio_trigger_get(struct iio_trigger *trig)
+{
+ get_device(&trig->dev);
+ __module_get(trig->owner);
+
+ return trig;
+}
+
+/**
+ * iio_device_set_drvdata() - Set trigger driver data
+ * @trig: IIO trigger structure
+ * @data: Driver specific data
+ *
+ * Allows to attach an arbitrary pointer to an IIO trigger, which can later be
+ * retrieved by iio_trigger_get_drvdata().
+ */
+static inline void iio_trigger_set_drvdata(struct iio_trigger *trig, void *data)
+{
+ dev_set_drvdata(&trig->dev, data);
+}
+
+/**
+ * iio_trigger_get_drvdata() - Get trigger driver data
+ * @trig: IIO trigger structure
+ *
+ * Returns the data previously set with iio_trigger_set_drvdata()
+ */
+static inline void *iio_trigger_get_drvdata(struct iio_trigger *trig)
+{
+ return dev_get_drvdata(&trig->dev);
+}
+
+/**
+ * iio_trigger_register() - register a trigger with the IIO core
+ * @trig_info: trigger to be registered
+ **/
+#define iio_trigger_register(trig_info) \
+ __iio_trigger_register((trig_info), THIS_MODULE)
+int __iio_trigger_register(struct iio_trigger *trig_info,
+ struct module *this_mod);
+
+#define devm_iio_trigger_register(dev, trig_info) \
+ __devm_iio_trigger_register((dev), (trig_info), THIS_MODULE)
+int __devm_iio_trigger_register(struct device *dev,
+ struct iio_trigger *trig_info,
+ struct module *this_mod);
+
+/**
+ * iio_trigger_unregister() - unregister a trigger from the core
+ * @trig_info: trigger to be unregistered
+ **/
+void iio_trigger_unregister(struct iio_trigger *trig_info);
+
+void devm_iio_trigger_unregister(struct device *dev,
+ struct iio_trigger *trig_info);
+
+/**
+ * iio_trigger_set_immutable() - set an immutable trigger on destination
+ *
+ * @indio_dev: IIO device structure containing the device
+ * @trig: trigger to assign to device
+ *
+ **/
+int iio_trigger_set_immutable(struct iio_dev *indio_dev, struct iio_trigger *trig);
+
+/**
+ * iio_trigger_poll() - called on a trigger occurring
+ * @trig: trigger which occurred
+ *
+ * Typically called in relevant hardware interrupt handler.
+ **/
+void iio_trigger_poll(struct iio_trigger *trig);
+void iio_trigger_poll_chained(struct iio_trigger *trig);
+
+irqreturn_t iio_trigger_generic_data_rdy_poll(int irq, void *private);
+
+__printf(1, 2) struct iio_trigger *iio_trigger_alloc(const char *fmt, ...);
+void iio_trigger_free(struct iio_trigger *trig);
+
+/**
+ * iio_trigger_using_own() - tells us if we use our own HW trigger ourselves
+ * @indio_dev: device to check
+ */
+bool iio_trigger_using_own(struct iio_dev *indio_dev);
+
+int iio_trigger_validate_own_device(struct iio_trigger *trig,
+ struct iio_dev *indio_dev);
+
+#else
+struct iio_trigger;
+struct iio_trigger_ops;
+#endif
+#endif /* _IIO_TRIGGER_H_ */
diff --git a/include/linux/iio/trigger_consumer.h b/include/linux/iio/trigger_consumer.h
new file mode 100644
index 0000000..c4f8c74
--- /dev/null
+++ b/include/linux/iio/trigger_consumer.h
@@ -0,0 +1,63 @@
+/* The industrial I/O core, trigger consumer functions
+ *
+ * Copyright (c) 2008-2011 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef __LINUX_IIO_TRIGGER_CONSUMER_H__
+#define __LINUX_IIO_TRIGGER_CONSUMER_H__
+
+#include <linux/interrupt.h>
+#include <linux/types.h>
+
+struct iio_dev;
+struct iio_trigger;
+
+/**
+ * struct iio_poll_func - poll function pair
+ *
+ * @indio_dev: data specific to device (passed into poll func)
+ * @h: the function that is actually run on trigger
+ * @thread: threaded interrupt part
+ * @type: the type of interrupt (basically if oneshot)
+ * @name: name used to identify the trigger consumer.
+ * @irq: the corresponding irq as allocated from the
+ * trigger pool
+ * @timestamp: some devices need a timestamp grabbed as soon
+ * as possible after the trigger - hence handler
+ * passes it via here.
+ **/
+struct iio_poll_func {
+ struct iio_dev *indio_dev;
+ irqreturn_t (*h)(int irq, void *p);
+ irqreturn_t (*thread)(int irq, void *p);
+ int type;
+ char *name;
+ int irq;
+ s64 timestamp;
+};
+
+
+struct iio_poll_func
+*iio_alloc_pollfunc(irqreturn_t (*h)(int irq, void *p),
+ irqreturn_t (*thread)(int irq, void *p),
+ int type,
+ struct iio_dev *indio_dev,
+ const char *fmt,
+ ...);
+void iio_dealloc_pollfunc(struct iio_poll_func *pf);
+irqreturn_t iio_pollfunc_store_time(int irq, void *p);
+
+void iio_trigger_notify_done(struct iio_trigger *trig);
+
+/*
+ * Two functions for common case where all that happens is a pollfunc
+ * is attached and detached from a trigger
+ */
+int iio_triggered_buffer_postenable(struct iio_dev *indio_dev);
+int iio_triggered_buffer_predisable(struct iio_dev *indio_dev);
+
+#endif
diff --git a/include/linux/iio/triggered_buffer.h b/include/linux/iio/triggered_buffer.h
new file mode 100644
index 0000000..238ad30
--- /dev/null
+++ b/include/linux/iio/triggered_buffer.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_IIO_TRIGGERED_BUFFER_H_
+#define _LINUX_IIO_TRIGGERED_BUFFER_H_
+
+#include <linux/interrupt.h>
+
+struct iio_dev;
+struct iio_buffer_setup_ops;
+
+int iio_triggered_buffer_setup(struct iio_dev *indio_dev,
+ irqreturn_t (*h)(int irq, void *p),
+ irqreturn_t (*thread)(int irq, void *p),
+ const struct iio_buffer_setup_ops *setup_ops);
+void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev);
+
+int devm_iio_triggered_buffer_setup(struct device *dev,
+ struct iio_dev *indio_dev,
+ irqreturn_t (*h)(int irq, void *p),
+ irqreturn_t (*thread)(int irq, void *p),
+ const struct iio_buffer_setup_ops *ops);
+void devm_iio_triggered_buffer_cleanup(struct device *dev,
+ struct iio_dev *indio_dev);
+
+#endif
diff --git a/include/linux/iio/triggered_event.h b/include/linux/iio/triggered_event.h
new file mode 100644
index 0000000..13250fd
--- /dev/null
+++ b/include/linux/iio/triggered_event.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_IIO_TRIGGERED_EVENT_H_
+#define _LINUX_IIO_TRIGGERED_EVENT_H_
+
+#include <linux/interrupt.h>
+
+int iio_triggered_event_setup(struct iio_dev *indio_dev,
+ irqreturn_t (*h)(int irq, void *p),
+ irqreturn_t (*thread)(int irq, void *p));
+void iio_triggered_event_cleanup(struct iio_dev *indio_dev);
+
+#endif
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
new file mode 100644
index 0000000..6eb3d68
--- /dev/null
+++ b/include/linux/iio/types.h
@@ -0,0 +1,65 @@
+/* industrial I/O data types needed both in and out of kernel
+ *
+ * Copyright (c) 2008 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef _IIO_TYPES_H_
+#define _IIO_TYPES_H_
+
+#include <uapi/linux/iio/types.h>
+
+enum iio_event_info {
+ IIO_EV_INFO_ENABLE,
+ IIO_EV_INFO_VALUE,
+ IIO_EV_INFO_HYSTERESIS,
+ IIO_EV_INFO_PERIOD,
+ IIO_EV_INFO_HIGH_PASS_FILTER_3DB,
+ IIO_EV_INFO_LOW_PASS_FILTER_3DB,
+};
+
+#define IIO_VAL_INT 1
+#define IIO_VAL_INT_PLUS_MICRO 2
+#define IIO_VAL_INT_PLUS_NANO 3
+#define IIO_VAL_INT_PLUS_MICRO_DB 4
+#define IIO_VAL_INT_MULTIPLE 5
+#define IIO_VAL_FRACTIONAL 10
+#define IIO_VAL_FRACTIONAL_LOG2 11
+
+enum iio_available_type {
+ IIO_AVAIL_LIST,
+ IIO_AVAIL_RANGE,
+};
+
+enum iio_chan_info_enum {
+ IIO_CHAN_INFO_RAW = 0,
+ IIO_CHAN_INFO_PROCESSED,
+ IIO_CHAN_INFO_SCALE,
+ IIO_CHAN_INFO_OFFSET,
+ IIO_CHAN_INFO_CALIBSCALE,
+ IIO_CHAN_INFO_CALIBBIAS,
+ IIO_CHAN_INFO_PEAK,
+ IIO_CHAN_INFO_PEAK_SCALE,
+ IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW,
+ IIO_CHAN_INFO_AVERAGE_RAW,
+ IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY,
+ IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY,
+ IIO_CHAN_INFO_SAMP_FREQ,
+ IIO_CHAN_INFO_FREQUENCY,
+ IIO_CHAN_INFO_PHASE,
+ IIO_CHAN_INFO_HARDWAREGAIN,
+ IIO_CHAN_INFO_HYSTERESIS,
+ IIO_CHAN_INFO_INT_TIME,
+ IIO_CHAN_INFO_ENABLE,
+ IIO_CHAN_INFO_CALIBHEIGHT,
+ IIO_CHAN_INFO_CALIBWEIGHT,
+ IIO_CHAN_INFO_DEBOUNCE_COUNT,
+ IIO_CHAN_INFO_DEBOUNCE_TIME,
+ IIO_CHAN_INFO_CALIBEMISSIVITY,
+ IIO_CHAN_INFO_OVERSAMPLING_RATIO,
+};
+
+#endif /* _IIO_TYPES_H_ */