linux/drivers/thermal/qcom/tsens-v2.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * Copyright (c) 2015, The Linux Foundation. All rights reserved.
   4 * Copyright (c) 2018, Linaro Limited
   5 */
   6
   7#include <linux/bitops.h>
   8#include <linux/regmap.h>
   9#include "tsens.h"
  10
  11/* ----- SROT ------ */
  12#define SROT_HW_VER_OFF 0x0000
  13#define SROT_CTRL_OFF           0x0004
  14
  15/* ----- TM ------ */
  16#define TM_INT_EN_OFF                   0x0004
  17#define TM_UPPER_LOWER_INT_STATUS_OFF   0x0008
  18#define TM_UPPER_LOWER_INT_CLEAR_OFF    0x000c
  19#define TM_UPPER_LOWER_INT_MASK_OFF     0x0010
  20#define TM_CRITICAL_INT_STATUS_OFF      0x0014
  21#define TM_CRITICAL_INT_CLEAR_OFF       0x0018
  22#define TM_CRITICAL_INT_MASK_OFF        0x001c
  23#define TM_Sn_UPPER_LOWER_THRESHOLD_OFF 0x0020
  24#define TM_Sn_CRITICAL_THRESHOLD_OFF    0x0060
  25#define TM_Sn_STATUS_OFF                0x00a0
  26#define TM_TRDY_OFF                     0x00e4
  27#define TM_WDOG_LOG_OFF         0x013c
  28
  29/* v2.x: 8996, 8998, sdm845 */
  30
  31static struct tsens_features tsens_v2_feat = {
  32        .ver_major      = VER_2_X,
  33        .crit_int       = 1,
  34        .adc            = 0,
  35        .srot_split     = 1,
  36        .max_sensors    = 16,
  37};
  38
  39static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {
  40        /* ----- SROT ------ */
  41        /* VERSION */
  42        [VER_MAJOR] = REG_FIELD(SROT_HW_VER_OFF, 28, 31),
  43        [VER_MINOR] = REG_FIELD(SROT_HW_VER_OFF, 16, 27),
  44        [VER_STEP]  = REG_FIELD(SROT_HW_VER_OFF,  0, 15),
  45        /* CTRL_OFF */
  46        [TSENS_EN]     = REG_FIELD(SROT_CTRL_OFF,    0,  0),
  47        [TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF,    1,  1),
  48
  49        /* ----- TM ------ */
  50        /* INTERRUPT ENABLE */
  51        /* v2 has separate enables for UPPER/LOWER/CRITICAL interrupts */
  52        [INT_EN]  = REG_FIELD(TM_INT_EN_OFF, 0, 2),
  53
  54        /* TEMPERATURE THRESHOLDS */
  55        REG_FIELD_FOR_EACH_SENSOR16(LOW_THRESH,  TM_Sn_UPPER_LOWER_THRESHOLD_OFF,  0,  11),
  56        REG_FIELD_FOR_EACH_SENSOR16(UP_THRESH,   TM_Sn_UPPER_LOWER_THRESHOLD_OFF, 12,  23),
  57        REG_FIELD_FOR_EACH_SENSOR16(CRIT_THRESH, TM_Sn_CRITICAL_THRESHOLD_OFF,     0,  11),
  58
  59        /* INTERRUPTS [CLEAR/STATUS/MASK] */
  60        REG_FIELD_SPLIT_BITS_0_15(LOW_INT_STATUS,  TM_UPPER_LOWER_INT_STATUS_OFF),
  61        REG_FIELD_SPLIT_BITS_0_15(LOW_INT_CLEAR,   TM_UPPER_LOWER_INT_CLEAR_OFF),
  62        REG_FIELD_SPLIT_BITS_0_15(LOW_INT_MASK,    TM_UPPER_LOWER_INT_MASK_OFF),
  63        REG_FIELD_SPLIT_BITS_16_31(UP_INT_STATUS,  TM_UPPER_LOWER_INT_STATUS_OFF),
  64        REG_FIELD_SPLIT_BITS_16_31(UP_INT_CLEAR,   TM_UPPER_LOWER_INT_CLEAR_OFF),
  65        REG_FIELD_SPLIT_BITS_16_31(UP_INT_MASK,    TM_UPPER_LOWER_INT_MASK_OFF),
  66        REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_STATUS, TM_CRITICAL_INT_STATUS_OFF),
  67        REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_CLEAR,  TM_CRITICAL_INT_CLEAR_OFF),
  68        REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_MASK,   TM_CRITICAL_INT_MASK_OFF),
  69
  70        /* WATCHDOG on v2.3 or later */
  71        [WDOG_BARK_STATUS] = REG_FIELD(TM_CRITICAL_INT_STATUS_OFF, 31, 31),
  72        [WDOG_BARK_CLEAR]  = REG_FIELD(TM_CRITICAL_INT_CLEAR_OFF,  31, 31),
  73        [WDOG_BARK_MASK]   = REG_FIELD(TM_CRITICAL_INT_MASK_OFF,   31, 31),
  74        [CC_MON_STATUS]    = REG_FIELD(TM_CRITICAL_INT_STATUS_OFF, 30, 30),
  75        [CC_MON_CLEAR]     = REG_FIELD(TM_CRITICAL_INT_CLEAR_OFF,  30, 30),
  76        [CC_MON_MASK]      = REG_FIELD(TM_CRITICAL_INT_MASK_OFF,   30, 30),
  77        [WDOG_BARK_COUNT]  = REG_FIELD(TM_WDOG_LOG_OFF,             0,  7),
  78
  79        /* Sn_STATUS */
  80        REG_FIELD_FOR_EACH_SENSOR16(LAST_TEMP,       TM_Sn_STATUS_OFF,  0,  11),
  81        REG_FIELD_FOR_EACH_SENSOR16(VALID,           TM_Sn_STATUS_OFF, 21,  21),
  82        /* xxx_STATUS bits: 1 == threshold violated */
  83        REG_FIELD_FOR_EACH_SENSOR16(MIN_STATUS,      TM_Sn_STATUS_OFF, 16,  16),
  84        REG_FIELD_FOR_EACH_SENSOR16(LOWER_STATUS,    TM_Sn_STATUS_OFF, 17,  17),
  85        REG_FIELD_FOR_EACH_SENSOR16(UPPER_STATUS,    TM_Sn_STATUS_OFF, 18,  18),
  86        REG_FIELD_FOR_EACH_SENSOR16(CRITICAL_STATUS, TM_Sn_STATUS_OFF, 19,  19),
  87        REG_FIELD_FOR_EACH_SENSOR16(MAX_STATUS,      TM_Sn_STATUS_OFF, 20,  20),
  88
  89        /* TRDY: 1=ready, 0=in progress */
  90        [TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0),
  91};
  92
  93static const struct tsens_ops ops_generic_v2 = {
  94        .init           = init_common,
  95        .get_temp       = get_temp_tsens_valid,
  96};
  97
  98struct tsens_plat_data data_tsens_v2 = {
  99        .ops            = &ops_generic_v2,
 100        .feat           = &tsens_v2_feat,
 101        .fields = tsens_v2_regfields,
 102};
 103
 104/* Kept around for backward compatibility with old msm8996.dtsi */
 105struct tsens_plat_data data_8996 = {
 106        .num_sensors    = 13,
 107        .ops            = &ops_generic_v2,
 108        .feat           = &tsens_v2_feat,
 109        .fields = tsens_v2_regfields,
 110};
 111