diff options
Diffstat (limited to 'drivers/iio/common/ms_sensors/ms_sensors_i2c.h')
-rw-r--r-- | drivers/iio/common/ms_sensors/ms_sensors_i2c.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/drivers/iio/common/ms_sensors/ms_sensors_i2c.h b/drivers/iio/common/ms_sensors/ms_sensors_i2c.h new file mode 100644 index 0000000000..f15b973f27 --- /dev/null +++ b/drivers/iio/common/ms_sensors/ms_sensors_i2c.h @@ -0,0 +1,74 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Measurements Specialties common sensor driver + * + * Copyright (c) 2015 Measurement-Specialties + */ + +#ifndef _MS_SENSORS_I2C_H +#define _MS_SENSORS_I2C_H + +#include <linux/i2c.h> +#include <linux/mutex.h> + +#define MS_SENSORS_TP_PROM_WORDS_NB 8 + +/** + * struct ms_ht_dev - Humidity/Temperature sensor device structure + * @client: i2c client + * @lock: lock protecting the i2c conversion + * @res_index: index to selected sensor resolution + */ +struct ms_ht_dev { + struct i2c_client *client; + struct mutex lock; + u8 res_index; +}; + +/** + * struct ms_hw_data - Temperature/Pressure sensor hardware data + * @prom_len: number of words in the PROM + * @max_res_index: maximum sensor resolution index + */ +struct ms_tp_hw_data { + u8 prom_len; + u8 max_res_index; +}; + +/** + * struct ms_tp_dev - Temperature/Pressure sensor device structure + * @client: i2c client + * @lock: lock protecting the i2c conversion + * @prom: array of PROM coefficients used for conversion. Added element + * for CRC computation + * @res_index: index to selected sensor resolution + */ +struct ms_tp_dev { + struct i2c_client *client; + struct mutex lock; + const struct ms_tp_hw_data *hw; + u16 prom[MS_SENSORS_TP_PROM_WORDS_NB]; + u8 res_index; +}; + +int ms_sensors_reset(void *cli, u8 cmd, unsigned int delay); +int ms_sensors_read_prom_word(void *cli, int cmd, u16 *word); +int ms_sensors_convert_and_read(void *cli, u8 conv, u8 rd, + unsigned int delay, u32 *adc); +int ms_sensors_read_serial(struct i2c_client *client, u64 *sn); +ssize_t ms_sensors_show_serial(struct ms_ht_dev *dev_data, char *buf); +ssize_t ms_sensors_write_resolution(struct ms_ht_dev *dev_data, u8 i); +ssize_t ms_sensors_show_battery_low(struct ms_ht_dev *dev_data, char *buf); +ssize_t ms_sensors_show_heater(struct ms_ht_dev *dev_data, char *buf); +ssize_t ms_sensors_write_heater(struct ms_ht_dev *dev_data, + const char *buf, size_t len); +int ms_sensors_ht_read_temperature(struct ms_ht_dev *dev_data, + s32 *temperature); +int ms_sensors_ht_read_humidity(struct ms_ht_dev *dev_data, + u32 *humidity); +int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data); +int ms_sensors_read_temp_and_pressure(struct ms_tp_dev *dev_data, + int *temperature, + unsigned int *pressure); + +#endif /* _MS_SENSORS_I2C_H */ |