drivers/iio/common/hid-sensors/hid-sensor-attributes.h

   1 /*
   2  * HID Sensors Driver
   3  * Copyright (c) 2012, Intel Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms and conditions of the GNU General Public License,
   7  * version 2, as published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
  17  *
  18  */
  19 #ifndef _HID_SENSORS_ATTRIBUTES_H
  20 #define _HID_SENSORS_ATTRIBUTES_H
  21
  22 /* Common hid sensor iio structure */
  23 struct hid_sensor_iio_common {
  24         struct hid_sensor_hub_device *hsdev;
  25         struct platform_device *pdev;
  26         unsigned usage_id;
  27         bool data_ready;
  28         struct hid_sensor_hub_attribute_info poll;
  29         struct hid_sensor_hub_attribute_info report_state;
  30         struct hid_sensor_hub_attribute_info power_state;
  31         struct hid_sensor_hub_attribute_info sensitivity;
  32 };
  33
  34 /*Convert from hid unit expo to regular exponent*/
  35 static inline int hid_sensor_convert_exponent(int unit_expo)
  36 {
  37         if (unit_expo < 0x08)
  38                 return unit_expo;
  39         else if (unit_expo <= 0x0f)
  40                 return -(0x0f-unit_expo+1);
  41         else
  42                 return 0;
  43 }
  44
  45 int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
  46                                         u32 usage_id,
  47                                         struct hid_sensor_iio_common *st);
  48 int hid_sensor_write_raw_hyst_value(struct hid_sensor_iio_common *st,
  49                                         int val1, int val2);
  50 int hid_sensor_read_raw_hyst_value(struct hid_sensor_iio_common *st,
  51                                         int *val1, int *val2);
  52 int hid_sensor_write_samp_freq_value(struct hid_sensor_iio_common *st,
  53                                         int val1, int val2);
  54 int hid_sensor_read_samp_freq_value(struct hid_sensor_iio_common *st,
  55                                         int *val1, int *val2);
  56
  57 #endif