diff options
Diffstat (limited to 'drivers/iio/common/hid-sensors/hid-sensor-attributes.h')
| -rw-r--r-- | drivers/iio/common/hid-sensors/hid-sensor-attributes.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.h b/drivers/iio/common/hid-sensors/hid-sensor-attributes.h new file mode 100644 index 000000000000..a4676a0c3de5 --- /dev/null +++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.h @@ -0,0 +1,57 @@ +/* + * HID Sensors Driver + * Copyright (c) 2012, 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. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ +#ifndef _HID_SENSORS_ATTRIBUTES_H +#define _HID_SENSORS_ATTRIBUTES_H + +/* Common hid sensor iio structure */ +struct hid_sensor_iio_common { + struct hid_sensor_hub_device *hsdev; + struct platform_device *pdev; + unsigned usage_id; + bool data_ready; + struct hid_sensor_hub_attribute_info poll; + struct hid_sensor_hub_attribute_info report_state; + struct hid_sensor_hub_attribute_info power_state; + struct hid_sensor_hub_attribute_info sensitivity; +}; + +/*Convert from hid unit expo to regular exponent*/ +static inline int hid_sensor_convert_exponent(int unit_expo) +{ + if (unit_expo < 0x08) + return unit_expo; + else if (unit_expo <= 0x0f) + return -(0x0f-unit_expo+1); + else + return 0; +} + +int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev, + u32 usage_id, + struct hid_sensor_iio_common *st); +int hid_sensor_write_raw_hyst_value(struct hid_sensor_iio_common *st, + int val1, int val2); +int hid_sensor_read_raw_hyst_value(struct hid_sensor_iio_common *st, + int *val1, int *val2); +int hid_sensor_write_samp_freq_value(struct hid_sensor_iio_common *st, + int val1, int val2); +int hid_sensor_read_samp_freq_value(struct hid_sensor_iio_common *st, + int *val1, int *val2); + +#endif |