korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-04 01:24:12 +08:00
Code Issues Packages Projects Releases Wiki Activity
c19970548e
linux/drivers/thermal/qcom/tsens.h
Amit Kucheria c19970548e drivers: thermal: tsens: Introduce reg_fields to deal with register description 
As we add support for newer versions of the TSENS IP, the current
approach isn't scaling because registers and bitfields get moved around,
requiring platform-specific hacks in the code. By moving to regmap, we
can hide the register level differences away from the code.

Define a common set of registers and bit-fields that we care about
across the various tsens IP versions.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
2019-05-14 06:59:12 -07:00

321 lines
8.8 KiB
C
Raw Blame History

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*/
#ifndef __QCOM_TSENS_H__
#define __QCOM_TSENS_H__
#define ONE_PT_CALIB 0x1
#define ONE_PT_CALIB2 0x2
#define TWO_PT_CALIB 0x3
#include <linux/thermal.h>
#include <linux/regmap.h>
struct tsens_priv;
enum tsens_ver {
VER_0_1 = 0,
VER_1_X,
VER_2_X,
};
/**
* struct tsens_sensor - data for each sensor connected to the tsens device
* @priv: tsens device instance that this sensor is connected to
* @tzd: pointer to the thermal zone that this sensor is in
* @offset: offset of temperature adjustment curve
* @id: Sensor ID
* @hw_id: HW ID can be used in case of platform-specific IDs
* @slope: slope of temperature adjustment curve
* @status: 8960-specific variable to track 8960 and 8660 status register offset
*/
struct tsens_sensor {
struct tsens_priv *priv;
struct thermal_zone_device *tzd;
int offset;
int id;
int hw_id;
int slope;
u32 status;
};
/**
* struct tsens_ops - operations as supported by the tsens device
* @init: Function to initialize the tsens device
* @calibrate: Function to calibrate the tsens device
* @get_temp: Function which returns the temp in millidegC
* @enable: Function to enable (clocks/power) tsens device
* @disable: Function to disable the tsens device
* @suspend: Function to suspend the tsens device
* @resume: Function to resume the tsens device
* @get_trend: Function to get the thermal/temp trend
*/
struct tsens_ops {
/* mandatory callbacks */
int (*init)(struct tsens_priv *priv);
int (*calibrate)(struct tsens_priv *priv);
int (*get_temp)(struct tsens_priv *priv, int i, int *temp);
/* optional callbacks */
int (*enable)(struct tsens_priv *priv, int i);
void (*disable)(struct tsens_priv *priv);
int (*suspend)(struct tsens_priv *priv);
int (*resume)(struct tsens_priv *priv);
int (*get_trend)(struct tsens_priv *priv, int i, enum thermal_trend *trend);
};
#define REG_FIELD_FOR_EACH_SENSOR11(_name, _offset, _startbit, _stopbit) \
[_name##_##0] = REG_FIELD(_offset, _startbit, _stopbit), \
[_name##_##1] = REG_FIELD(_offset + 4, _startbit, _stopbit), \
[_name##_##2] = REG_FIELD(_offset + 8, _startbit, _stopbit), \
[_name##_##3] = REG_FIELD(_offset + 12, _startbit, _stopbit), \
[_name##_##4] = REG_FIELD(_offset + 16, _startbit, _stopbit), \
[_name##_##5] = REG_FIELD(_offset + 20, _startbit, _stopbit), \
[_name##_##6] = REG_FIELD(_offset + 24, _startbit, _stopbit), \
[_name##_##7] = REG_FIELD(_offset + 28, _startbit, _stopbit), \
[_name##_##8] = REG_FIELD(_offset + 32, _startbit, _stopbit), \
[_name##_##9] = REG_FIELD(_offset + 36, _startbit, _stopbit), \
[_name##_##10] = REG_FIELD(_offset + 40, _startbit, _stopbit)
#define REG_FIELD_FOR_EACH_SENSOR16(_name, _offset, _startbit, _stopbit) \
[_name##_##0] = REG_FIELD(_offset, _startbit, _stopbit), \
[_name##_##1] = REG_FIELD(_offset + 4, _startbit, _stopbit), \
[_name##_##2] = REG_FIELD(_offset + 8, _startbit, _stopbit), \
[_name##_##3] = REG_FIELD(_offset + 12, _startbit, _stopbit), \
[_name##_##4] = REG_FIELD(_offset + 16, _startbit, _stopbit), \
[_name##_##5] = REG_FIELD(_offset + 20, _startbit, _stopbit), \
[_name##_##6] = REG_FIELD(_offset + 24, _startbit, _stopbit), \
[_name##_##7] = REG_FIELD(_offset + 28, _startbit, _stopbit), \
[_name##_##8] = REG_FIELD(_offset + 32, _startbit, _stopbit), \
[_name##_##9] = REG_FIELD(_offset + 36, _startbit, _stopbit), \
[_name##_##10] = REG_FIELD(_offset + 40, _startbit, _stopbit), \
[_name##_##11] = REG_FIELD(_offset + 44, _startbit, _stopbit), \
[_name##_##12] = REG_FIELD(_offset + 48, _startbit, _stopbit), \
[_name##_##13] = REG_FIELD(_offset + 52, _startbit, _stopbit), \
[_name##_##14] = REG_FIELD(_offset + 56, _startbit, _stopbit), \
[_name##_##15] = REG_FIELD(_offset + 60, _startbit, _stopbit)
/* reg_field IDs to use as an index into an array */
enum regfield_ids {
/* ----- SROT ------ */
/* HW_VER */
VER_MAJOR = 0,
VER_MINOR,
VER_STEP,
/* CTRL_OFFSET */
TSENS_EN = 3,
TSENS_SW_RST,
SENSOR_EN,
CODE_OR_TEMP,
/* ----- TM ------ */
/* STATUS */
LAST_TEMP_0 = 7, /* Last temperature reading */
LAST_TEMP_1,
LAST_TEMP_2,
LAST_TEMP_3,
LAST_TEMP_4,
LAST_TEMP_5,
LAST_TEMP_6,
LAST_TEMP_7,
LAST_TEMP_8,
LAST_TEMP_9,
LAST_TEMP_10,
LAST_TEMP_11,
LAST_TEMP_12,
LAST_TEMP_13,
LAST_TEMP_14,
LAST_TEMP_15,
VALID_0 = 23, /* VALID reading or not */
VALID_1,
VALID_2,
VALID_3,
VALID_4,
VALID_5,
VALID_6,
VALID_7,
VALID_8,
VALID_9,
VALID_10,
VALID_11,
VALID_12,
VALID_13,
VALID_14,
VALID_15,
MIN_STATUS_0, /* MIN threshold violated */
MIN_STATUS_1,
MIN_STATUS_2,
MIN_STATUS_3,
MIN_STATUS_4,
MIN_STATUS_5,
MIN_STATUS_6,
MIN_STATUS_7,
MIN_STATUS_8,
MIN_STATUS_9,
MIN_STATUS_10,
MIN_STATUS_11,
MIN_STATUS_12,
MIN_STATUS_13,
MIN_STATUS_14,
MIN_STATUS_15,
MAX_STATUS_0, /* MAX threshold violated */
MAX_STATUS_1,
MAX_STATUS_2,
MAX_STATUS_3,
MAX_STATUS_4,
MAX_STATUS_5,
MAX_STATUS_6,
MAX_STATUS_7,
MAX_STATUS_8,
MAX_STATUS_9,
MAX_STATUS_10,
MAX_STATUS_11,
MAX_STATUS_12,
MAX_STATUS_13,
MAX_STATUS_14,
MAX_STATUS_15,
LOWER_STATUS_0, /* LOWER threshold violated */
LOWER_STATUS_1,
LOWER_STATUS_2,
LOWER_STATUS_3,
LOWER_STATUS_4,
LOWER_STATUS_5,
LOWER_STATUS_6,
LOWER_STATUS_7,
LOWER_STATUS_8,
LOWER_STATUS_9,
LOWER_STATUS_10,
LOWER_STATUS_11,
LOWER_STATUS_12,
LOWER_STATUS_13,
LOWER_STATUS_14,
LOWER_STATUS_15,
UPPER_STATUS_0, /* UPPER threshold violated */
UPPER_STATUS_1,
UPPER_STATUS_2,
UPPER_STATUS_3,
UPPER_STATUS_4,
UPPER_STATUS_5,
UPPER_STATUS_6,
UPPER_STATUS_7,
UPPER_STATUS_8,
UPPER_STATUS_9,
UPPER_STATUS_10,
UPPER_STATUS_11,
UPPER_STATUS_12,
UPPER_STATUS_13,
UPPER_STATUS_14,
UPPER_STATUS_15,
CRITICAL_STATUS_0, /* CRITICAL threshold violated */
CRITICAL_STATUS_1,
CRITICAL_STATUS_2,
CRITICAL_STATUS_3,
CRITICAL_STATUS_4,
CRITICAL_STATUS_5,
CRITICAL_STATUS_6,
CRITICAL_STATUS_7,
CRITICAL_STATUS_8,
CRITICAL_STATUS_9,
CRITICAL_STATUS_10,
CRITICAL_STATUS_11,
CRITICAL_STATUS_12,
CRITICAL_STATUS_13,
CRITICAL_STATUS_14,
CRITICAL_STATUS_15,
/* TRDY */
TRDY,
/* INTERRUPT ENABLE */
INT_EN, /* Pre-V1, V1.x */
LOW_INT_EN, /* V2.x */
UP_INT_EN, /* V2.x */
CRIT_INT_EN, /* V2.x */
/* Keep last */
MAX_REGFIELDS
};
/**
* struct tsens_features - Features supported by the IP
* @ver_major: Major number of IP version
* @crit_int: does the IP support critical interrupts?
* @adc: do the sensors only output adc code (instead of temperature)?
* @srot_split: does the IP neatly splits the register space into SROT and TM,
* with SROT only being available to secure boot firmware?
*/
struct tsens_features {
unsigned int ver_major;
unsigned int crit_int:1;
unsigned int adc:1;
unsigned int srot_split:1;
};
/**
* struct tsens_plat_data - tsens compile-time platform data
* @num_sensors: Number of sensors supported by platform
* @ops: operations the tsens instance supports
* @hw_ids: Subset of sensors ids supported by platform, if not the first n
* @feat: features of the IP
* @fields: bitfield locations
*/
struct tsens_plat_data {
const u32 num_sensors;
const struct tsens_ops *ops;
unsigned int *hw_ids;
const struct tsens_features *feat;
const struct reg_field *fields;
};
/**
* struct tsens_context - Registers to be saved/restored across a context loss
*/
struct tsens_context {
int threshold;
int control;
};
/**
* struct tsens_priv - private data for each instance of the tsens IP
* @dev: pointer to struct device
* @num_sensors: number of sensors enabled on this device
* @tm_map: pointer to TM register address space
* @srot_map: pointer to SROT register address space
* @tm_offset: deal with old device trees that don't address TM and SROT
* address space separately
* @rf: array of regmap_fields used to store value of the field
* @ctx: registers to be saved and restored during suspend/resume
* @feat: features of the IP
* @fields: bitfield locations
* @ops: pointer to list of callbacks supported by this device
* @sensor: list of sensors attached to this device
*/
struct tsens_priv {
struct device *dev;
u32 num_sensors;
struct regmap *tm_map;
struct regmap *srot_map;
u32 tm_offset;
struct regmap_field *rf[MAX_REGFIELDS];
struct tsens_context ctx;
const struct tsens_features *feat;
const struct reg_field *fields;
const struct tsens_ops *ops;
struct tsens_sensor sensor[0];
};
char *qfprom_read(struct device *dev, const char *cname);
void compute_intercept_slope(struct tsens_priv *priv, u32 *pt1, u32 *pt2, u32 mode);
int init_common(struct tsens_priv *priv);
int get_temp_common(struct tsens_priv *priv, int i, int *temp);
/* TSENS target */
extern const struct tsens_plat_data data_8960;
/* TSENS v0.1 targets */
extern const struct tsens_plat_data data_8916, data_8974;
/* TSENS v2 targets */
extern const struct tsens_plat_data data_8996, data_tsens_v2;
#endif /* __QCOM_TSENS_H__ */
Reference in New Issue View Git Blame Copy Permalink