80 lines
2.2 KiB
C
80 lines
2.2 KiB
C
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/*
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* include/linux/iio/imu/tsfw_icm20628.h
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*
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* Copyright (c) 2016, NVIDIA CORPORATION, All rights reserved.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __IIO_NVI_TS_MPU_H__
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#define __IIO_NVI_TS_MPU_H__
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#include <linux/nvs.h>
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#include <linux/hid.h>
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#define SENSOR_REPORT_ID_COMBINED 5
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#define SENSOR_REPORT_ID 6
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#define SENSOR_REPORT_ID_SYN 7
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#define SNSR_N 3
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#define SENSOR_DATA_SET_SIZE 18
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struct tsfw_icm20628_snsr {
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void *nvs_st;
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struct sensor_cfg cfg;
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};
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struct tsfw_icm20628_state {
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struct nvs_fn_if *nvs;
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struct hid_device *hdev; /* keep ptr to hid_device to send HOSTCMDs */
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unsigned int sts; /* TODO: needed? */
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unsigned int errs; /* TODO: needed? */
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unsigned int enabled; /* TODO: move to tsfw_icm20628_snsr? */
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struct tsfw_icm20628_snsr snsr[SNSR_N];
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u8 report_counter;
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/* sensor data buffer for fragmented packets
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* guaranteed to be < SENSOR_DATA_SET_SIZE
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*/
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u8 buffered_data[SENSOR_DATA_SET_SIZE];
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u8 buffered_cnt;
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};
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struct tsfw_icm20628_fn_dev {
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/* probe
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* @hdev: hid device associated with sensor
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* @pst: sensor state data
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* Returns 0 on success or a negative error code.
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*/
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int (*probe)(struct hid_device *hdev, struct tsfw_icm20628_state **pst);
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/* recv
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* @st: sensor state data
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* @type: report type
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* @data: sensor data from hid report
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* @len: length of sensor data
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* Returns 0 on success or a negative error code.
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*/
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int (*recv)(struct tsfw_icm20628_state *st, u8 *data, size_t len);
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/* remove
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* @st: sensor state data
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* Returns 0 on success or a negative error code.
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*/
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int (*remove)(struct tsfw_icm20628_state *st);
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};
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#ifdef CONFIG_TSFW_ICM
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struct tsfw_icm20628_fn_dev *tsfw_icm20628_fns(void);
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#else
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inline struct tsfw_icm20628_fn_dev *tsfw_icm20628_fns(void) { return NULL; }
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#endif
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#endif
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