linux-imx

/*

 * hid-sensor-custom.c

 * Copyright (c) 2015, 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.

 */

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/init.h>

#include <linux/miscdevice.h>

#include <linux/kfifo.h>

#include <linux/sched.h>

#include <linux/wait.h>

#include <linux/poll.h>

#include <linux/bsearch.h>

#include <linux/platform_device.h>

#include <linux/hid-sensor-hub.h>

​

#define HID_CUSTOM_NAME_LENGTH      64

#define HID_CUSTOM_MAX_CORE_ATTRS   10

#define HID_CUSTOM_TOTAL_ATTRS      (HID_CUSTOM_MAX_CORE_ATTRS + 1)

#define HID_CUSTOM_FIFO_SIZE        4096

#define HID_CUSTOM_MAX_FEATURE_BYTES    64

​

struct hid_sensor_custom_field {

    int report_id;

    char group_name[HID_CUSTOM_NAME_LENGTH];

    struct hid_sensor_hub_attribute_info attribute;

    struct device_attribute sd_attrs[HID_CUSTOM_MAX_CORE_ATTRS];

    char attr_name[HID_CUSTOM_TOTAL_ATTRS][HID_CUSTOM_NAME_LENGTH];

    struct attribute *attrs[HID_CUSTOM_TOTAL_ATTRS];

    struct attribute_group hid_custom_attribute_group;

};

​

struct hid_sensor_custom {

    struct mutex mutex;

    struct platform_device *pdev;

    struct hid_sensor_hub_device *hsdev;

    struct hid_sensor_hub_callbacks callbacks;

    int sensor_field_count;

    struct hid_sensor_custom_field *fields;

    int input_field_count;

    int input_report_size;

    int input_report_recd_size;

    bool input_skip_sample;

    bool enable;

    struct hid_sensor_custom_field *power_state;

    struct hid_sensor_custom_field *report_state;

    struct miscdevice custom_dev;

    struct kfifo data_fifo;

    unsigned long misc_opened;

    wait_queue_head_t wait;

};

​

/* Header for each sample to user space via dev interface */