drivers/thermal/qcom/tsens-v1.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2019, Linaro Limited
   4  */
   5
   6 #include <linux/bitops.h>
   7 #include <linux/regmap.h>
   8 #include <linux/delay.h>
   9 #include <linux/slab.h>
  10 #include "tsens.h"
  11
  12 /* ----- SROT ------ */
  13 #define SROT_HW_VER_OFF 0x0000
  14 #define SROT_CTRL_OFF           0x0004
  15
  16 /* ----- TM ------ */
  17 #define TM_INT_EN_OFF                           0x0000
  18 #define TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF       0x0004
  19 #define TM_Sn_STATUS_OFF                        0x0044
  20 #define TM_TRDY_OFF                             0x0084
  21 #define TM_HIGH_LOW_INT_STATUS_OFF              0x0088
  22 #define TM_HIGH_LOW_Sn_INT_THRESHOLD_OFF        0x0090
  23
  24 static struct tsens_legacy_calibration_format tsens_qcs404_nvmem = {
  25         .base_len = 8,
  26         .base_shift = 2,
  27         .sp_len = 6,
  28         .mode = { 4, 0 },
  29         .invalid = { 4, 2 },
  30         .base = { { 4, 3 }, { 4, 11 } },
  31         .sp = {
  32                 { { 0, 0 }, { 0, 6 } },
  33                 { { 0, 12 }, { 0, 18 } },
  34                 { { 0, 24 }, { 0, 30 } },
  35                 { { 1, 4 },  { 1, 10 } },
  36                 { { 1, 16 }, { 1, 22 } },
  37                 { { 2, 0 },  { 2, 6 } },
  38                 { { 2, 12 }, { 2, 18 } },
  39                 { { 2, 24 }, { 2, 30 } },
  40                 { { 3, 4 },  { 3, 10 } },
  41                 { { 3, 16 }, { 3, 22 } },
  42         },
  43 };
  44
  45 static int calibrate_v1(struct tsens_priv *priv)
  46 {
  47         u32 p1[10], p2[10];
  48         u32 *qfprom_cdata;
  49         int mode, ret;
  50
  51         ret = tsens_calibrate_common(priv);
  52         if (!ret)
  53                 return 0;
  54
  55         qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
  56         if (IS_ERR(qfprom_cdata))
  57                 return PTR_ERR(qfprom_cdata);
  58
  59         mode = tsens_read_calibration_legacy(priv, &tsens_qcs404_nvmem,
  60                                              p1, p2,
  61                                              qfprom_cdata, NULL);
  62
  63         compute_intercept_slope(priv, p1, p2, mode);
  64         kfree(qfprom_cdata);
  65
  66         return 0;
  67 }
  68
  69 /* v1.x: msm8956,8976,qcs404,405 */
  70
  71 static struct tsens_features tsens_v1_feat = {
  72         .ver_major      = VER_1_X,
  73         .crit_int       = 0,
  74         .combo_int      = 0,
  75         .adc            = 1,
  76         .srot_split     = 1,
  77         .max_sensors    = 11,
  78         .trip_min_temp  = -40000,
  79         .trip_max_temp  = 120000,
  80 };
  81
  82 static const struct reg_field tsens_v1_regfields[MAX_REGFIELDS] = {
  83         /* ----- SROT ------ */
  84         /* VERSION */
  85         [VER_MAJOR] = REG_FIELD(SROT_HW_VER_OFF, 28, 31),
  86         [VER_MINOR] = REG_FIELD(SROT_HW_VER_OFF, 16, 27),
  87         [VER_STEP]  = REG_FIELD(SROT_HW_VER_OFF,  0, 15),
  88         /* CTRL_OFFSET */
  89         [TSENS_EN]     = REG_FIELD(SROT_CTRL_OFF, 0,  0),
  90         [TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1,  1),
  91         [SENSOR_EN]    = REG_FIELD(SROT_CTRL_OFF, 3, 13),
  92
  93         /* ----- TM ------ */
  94         /* INTERRUPT ENABLE */
  95         [INT_EN]     = REG_FIELD(TM_INT_EN_OFF, 0, 0),
  96
  97         /* UPPER/LOWER TEMPERATURE THRESHOLDS */
  98         REG_FIELD_FOR_EACH_SENSOR11(LOW_THRESH,    TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF,  0,  9),
  99         REG_FIELD_FOR_EACH_SENSOR11(UP_THRESH,     TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 10, 19),
 100
 101         /* UPPER/LOWER INTERRUPTS [CLEAR/STATUS] */
 102         REG_FIELD_FOR_EACH_SENSOR11(LOW_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 20, 20),
 103         REG_FIELD_FOR_EACH_SENSOR11(UP_INT_CLEAR,  TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 21, 21),
 104         [LOW_INT_STATUS_0] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  0,  0),
 105         [LOW_INT_STATUS_1] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  1,  1),
 106         [LOW_INT_STATUS_2] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  2,  2),
 107         [LOW_INT_STATUS_3] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  3,  3),
 108         [LOW_INT_STATUS_4] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  4,  4),
 109         [LOW_INT_STATUS_5] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  5,  5),
 110         [LOW_INT_STATUS_6] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  6,  6),
 111         [LOW_INT_STATUS_7] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  7,  7),
 112         [UP_INT_STATUS_0]  = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  8,  8),
 113         [UP_INT_STATUS_1]  = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF,  9,  9),
 114         [UP_INT_STATUS_2]  = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 10, 10),
 115         [UP_INT_STATUS_3]  = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 11, 11),
 116         [UP_INT_STATUS_4]  = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 12, 12),
 117         [UP_INT_STATUS_5]  = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 13, 13),
 118         [UP_INT_STATUS_6]  = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 14, 14),
 119         [UP_INT_STATUS_7]  = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 15, 15),
 120
 121         /* NO CRITICAL INTERRUPT SUPPORT on v1 */
 122
 123         /* Sn_STATUS */
 124         REG_FIELD_FOR_EACH_SENSOR11(LAST_TEMP,    TM_Sn_STATUS_OFF,  0,  9),
 125         REG_FIELD_FOR_EACH_SENSOR11(VALID,        TM_Sn_STATUS_OFF, 14, 14),
 126         /* xxx_STATUS bits: 1 == threshold violated */
 127         REG_FIELD_FOR_EACH_SENSOR11(MIN_STATUS,   TM_Sn_STATUS_OFF, 10, 10),
 128         REG_FIELD_FOR_EACH_SENSOR11(LOWER_STATUS, TM_Sn_STATUS_OFF, 11, 11),
 129         REG_FIELD_FOR_EACH_SENSOR11(UPPER_STATUS, TM_Sn_STATUS_OFF, 12, 12),
 130         /* No CRITICAL field on v1.x */
 131         REG_FIELD_FOR_EACH_SENSOR11(MAX_STATUS,   TM_Sn_STATUS_OFF, 13, 13),
 132
 133         /* TRDY: 1=ready, 0=in progress */
 134         [TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0),
 135 };
 136
 137 static int __init init_8956(struct tsens_priv *priv) {
 138         priv->sensor[0].slope = 3313;
 139         priv->sensor[1].slope = 3275;
 140         priv->sensor[2].slope = 3320;
 141         priv->sensor[3].slope = 3246;
 142         priv->sensor[4].slope = 3279;
 143         priv->sensor[5].slope = 3257;
 144         priv->sensor[6].slope = 3234;
 145         priv->sensor[7].slope = 3269;
 146         priv->sensor[8].slope = 3255;
 147         priv->sensor[9].slope = 3239;
 148         priv->sensor[10].slope = 3286;
 149
 150         return init_common(priv);
 151 }
 152
 153 static const struct tsens_ops ops_generic_v1 = {
 154         .init           = init_common,
 155         .calibrate      = calibrate_v1,
 156         .get_temp       = get_temp_tsens_valid,
 157 };
 158
 159 struct tsens_plat_data data_tsens_v1 = {
 160         .ops            = &ops_generic_v1,
 161         .feat           = &tsens_v1_feat,
 162         .fields = tsens_v1_regfields,
 163 };
 164
 165 static const struct tsens_ops ops_8956 = {
 166         .init           = init_8956,
 167         .calibrate      = tsens_calibrate_common,
 168         .get_temp       = get_temp_tsens_valid,
 169 };
 170
 171 struct tsens_plat_data data_8956 = {
 172         .num_sensors    = 11,
 173         .ops            = &ops_8956,
 174         .feat           = &tsens_v1_feat,
 175         .fields         = tsens_v1_regfields,
 176 };
 177
 178 static const struct tsens_ops ops_8976 = {
 179         .init           = init_common,
 180         .calibrate      = tsens_calibrate_common,
 181         .get_temp       = get_temp_tsens_valid,
 182 };
 183
 184 struct tsens_plat_data data_8976 = {
 185         .num_sensors    = 11,
 186         .ops            = &ops_8976,
 187         .feat           = &tsens_v1_feat,
 188         .fields         = tsens_v1_regfields,
 189 };