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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
24static 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
45static 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
71static 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
82static 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
137static 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
153static const struct tsens_ops ops_generic_v1 = {
154 .init = init_common,
155 .calibrate = calibrate_v1,
156 .get_temp = get_temp_tsens_valid,
157};
158
159struct tsens_plat_data data_tsens_v1 = {
160 .ops = &ops_generic_v1,
161 .feat = &tsens_v1_feat,
162 .fields = tsens_v1_regfields,
163};
164
165static const struct tsens_ops ops_8956 = {
166 .init = init_8956,
167 .calibrate = tsens_calibrate_common,
168 .get_temp = get_temp_tsens_valid,
169};
170
171struct 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
178static const struct tsens_ops ops_8976 = {
179 .init = init_common,
180 .calibrate = tsens_calibrate_common,
181 .get_temp = get_temp_tsens_valid,
182};
183
184struct tsens_plat_data data_8976 = {
185 .num_sensors = 11,
186 .ops = &ops_8976,
187 .feat = &tsens_v1_feat,
188 .fields = tsens_v1_regfields,
189};