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

hid-sensor-attributes.h 1.9 KB
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  1. /*
    2. 

  2.  * HID Sensors Driver
    3. 

  3.  * Copyright (c) 2012, Intel Corporation.
    4. 

  4.  *
    5. 

  5.  * This program is free software; you can redistribute it and/or modify it
    6. 

  6.  * under the terms and conditions of the GNU General Public License,
    7. 

  7.  * version 2, as published by the Free Software Foundation.
    8. 

  8.  *
    9. 

  9.  * This program is distributed in the hope it will be useful, but WITHOUT
    10. 

  10.  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    11. 

  11.  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
    12. 

  12.  * more details.
    13. 

  13.  *
    14. 

  14.  * You should have received a copy of the GNU General Public License along with
    15. 

  15.  * this program; if not, write to the Free Software Foundation, Inc.,
    16. 

  16.  * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
    17. 

  17.  *
    18. 

  18.  */
    19. 

  19. #ifndef _HID_SENSORS_ATTRIBUTES_H
    20. 

  20. #define _HID_SENSORS_ATTRIBUTES_H
    21. 

  21. 

  22. /* Common hid sensor iio structure */
    23. 

  23. struct hid_sensor_iio_common {
    24. 

  24. 	struct hid_sensor_hub_device *hsdev;
    25. 

  25. 	struct platform_device *pdev;
    26. 

  26. 	unsigned usage_id;
    27. 

  27. 	bool data_ready;
    28. 

  28. 	struct hid_sensor_hub_attribute_info poll;
    29. 

  29. 	struct hid_sensor_hub_attribute_info report_state;
    30. 

  30. 	struct hid_sensor_hub_attribute_info power_state;
    31. 

  31. 	struct hid_sensor_hub_attribute_info sensitivity;
    32. 

  32. };
    33. 

  33. 

  34. /*Convert from hid unit expo to regular exponent*/
    35. 

  35. static inline int hid_sensor_convert_exponent(int unit_expo)
    36. 

  36. {
    37. 

  37. 	if (unit_expo < 0x08)
    38. 

  38. 		return unit_expo;
    39. 

  39. 	else if (unit_expo <= 0x0f)
    40. 

  40. 		return -(0x0f-unit_expo+1);
    41. 

  41. 	else
    42. 

  42. 		return 0;
    43. 

  43. }
    44. 

  44. 

  45. int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
    46. 

  46. 					u32 usage_id,
    47. 

  47. 					struct hid_sensor_iio_common *st);
    48. 

  48. int hid_sensor_write_raw_hyst_value(struct hid_sensor_iio_common *st,
    49. 

  49. 					int val1, int val2);
    50. 

  50. int hid_sensor_read_raw_hyst_value(struct hid_sensor_iio_common *st,
    51. 

  51. 					int *val1, int *val2);
    52. 

  52. int hid_sensor_write_samp_freq_value(struct hid_sensor_iio_common *st,
    53. 

  53. 					int val1, int val2);
    54. 

  54. int hid_sensor_read_samp_freq_value(struct hid_sensor_iio_common *st,
    55. 

  55. 					int *val1, int *val2);
    56. 

  56. 

  57. #endif
    58.