2021d15137
This snapshot is taken as of msm-3.18 commit dbdb6776f
(Merge "msm: camera: Add dummy sub module in sensor pipeline")
Commit 0b46b8a7 (clocksource: arch_timer: Fix code to use
physical timers when requested) introduces the use of
physical counters and requires clients to use api
arch_counter_get_cntvct(). Accordingly update tsens_poll()
to the new API to prevent a BUG_ON() during bootup.
Fixup TSENS to use supported int type for temperature value.
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
139 lines
5.1 KiB
C
139 lines
5.1 KiB
C
/*
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* Copyright (c) 2011-2015, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/*
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* Qualcomm TSENS Header file
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*
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*/
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#ifndef __MSM_TSENS_H
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#define __MSM_TSENS_H
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#define TSENS_MAX_SENSORS 11
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#define TSENS_MTC_ZONE_LOG_SIZE 6
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#define TSENS_NUM_MTC_ZONES_SUPPORT 3
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#define TSENS_ZONEMASK_PARAMS 3
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#define TSENS_ZONELOG_PARAMS 1
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#define TSENS_MTC_ZONE_HISTORY_SIZE 3
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struct tsens_device {
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uint32_t sensor_num;
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};
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#if defined(CONFIG_THERMAL_TSENS8974)
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/**
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* tsens_is_ready() - Clients can use this API to check if the TSENS device
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* is ready and clients can start requesting temperature reads.
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* @return: Returns true if device is ready else returns -EPROBE_DEFER
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* for clients to check back after a time duration.
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*/
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int tsens_is_ready(void);
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/**
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* tsens_tm_init_driver() - Early initialization for clients to read
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* TSENS temperature.
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*/
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int __init tsens_tm_init_driver(void);
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/**
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* tsens_get_hw_id_mapping() - Mapping software or sensor ID with the physical
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* TSENS sensor. On certain cases where there are more number of
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* controllers the sensor ID is used to map the clients software ID
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* with the physical HW sensors used by the driver.
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* @sensors_sw_id: Client ID.
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* @sensor_hw_num: Sensor client ID passed by the driver. This ID is used
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* by the driver to map it to the physical HW sensor
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* number.
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* @return: If the device is not present returns -EPROBE_DEFER
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* for clients to check back after a time duration.
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* 0 on success else error code on error.
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*/
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int tsens_get_hw_id_mapping(int sensor_sw_id, int *sensor_hw_num);
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/**
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* tsens_get_max_sensor_num() - Get the total number of active TSENS sensors.
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* The total number received by the client is across multiple
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* TSENS controllers if present.
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* @tsens_num_sensors: Total number of sensor result to be stored.
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*/
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int tsens_get_max_sensor_num(uint32_t *tsens_num_sensors);
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/**
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* tsens_set_mtc_zone_sw_mask() - Mask the MTC threshold level of a zone.
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* SW can force the MTC to stop issuing throttling commands that
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* correspond to each MTC threshold level by writing the
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* corresponding bit in register at any time.
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* @zone: Zone ID.
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* @th1_enable : Value corresponding to the threshold level.
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* @th2_enable : Value corresponding to the threshold level.
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*/
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int tsens_set_mtc_zone_sw_mask(unsigned int zone , unsigned int th1_enable,
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unsigned int th2_enable);
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/**
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* tsens_get_mtc_zone_log() - Get the log of last 6 commands sent to pulse
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* swallower of a zone.
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* zone: Zone ID
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* @zone_log: Log commands result to be stored.
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*/
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int tsens_get_mtc_zone_log(unsigned int zone , void *zone_log);
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/**
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* tsens_mtc_reset_history_counter() - Reset history of throttling commands
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* sent to pulse swallower. Tsens controller issues clock
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* throttling commands to Pulse swallower to perform HW
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* based clock throttling. Reset the history counter of a zone.
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* @zone: Zone ID.
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*/
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int tsens_mtc_reset_history_counter(unsigned int zone);
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/**
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* tsens_get_mtc_zone_history() - Get the history of throttling commands sent
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* to pulse swallower. Tsens controller issues clock throttling
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* commands to Pulse swallower to perform HW based clock
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* throttling.
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* @zone: Zone ID
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* @zone_hist: Commands history result to be stored.
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*/
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int tsens_get_mtc_zone_history(unsigned int zone , void *zone_hist);
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/**
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* tsens_get_temp() - Obtain the TSENS temperature for the respective sensor.
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*
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* @dev: Sensor number for which client wants the TSENS temperature
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* reading. The ID passed by the sensor could be the sensor ID
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* which the driver translates to internally to read the
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* respective physical HW sensor from the controller.
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* @temp: temperature result to be stored.
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* @return: If the device is not present returns -EPROBE_DEFER
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* for clients to check back after a time duration.
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* 0 on success else error code on error.
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*/
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int tsens_get_temp(struct tsens_device *dev, int *temp);
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#else
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static inline int tsens_is_ready(void)
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{ return -ENXIO; }
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static inline int __init tsens_tm_init_driver(void)
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{ return -ENXIO; }
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static inline int tsens_get_hw_id_mapping(
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int sensor_sw_id, int *sensor_hw_num)
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{ return -ENXIO; }
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static inline int tsens_get_max_sensor_num(uint32_t *tsens_num_sensors)
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{ return -ENXIO; }
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static inline int tsens_set_mtc_zone_sw_mask(unsigned int zone ,
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unsigned int th1_enable ,
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unsigned int th2_enable)
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{ return -ENXIO; }
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static inline int tsens_get_mtc_zone_log(unsigned int zone , void *zone_log)
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{ return -ENXIO; }
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static inline int tsens_mtc_reset_history_counter(unsigned int zone)
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{ return -ENXIO; }
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static inline int tsens_get_temp(struct tsens_device *dev,
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int *temp)
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{ return -ENXIO; }
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static inline int tsens_get_mtc_zone_history(unsigned int zone, void *zone_hist)
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{ return -ENXIO; }
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#endif
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#endif /*MSM_TSENS_H */
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