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 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 struct tsens_legacy_calibration_format tsens_8976_nvmem = {
46 .base_len = 8,
47 .base_shift = 2,
48 .sp_len = 6,
49 .mode = { 4, 0 },
50 .invalid = { 4, 2 },
51 .base = { { 0, 0 }, { 2, 8 } },
52 .sp = {
53 { { 0, 8 }, { 0, 14 } },
54 { { 0, 20 }, { 0, 26 } },
55 { { 1, 0 }, { 1, 6 } },
56 { { 1, 12 }, { 1, 18 } },
57 { { 2, 8 }, { 2, 14 } },
58 { { 2, 20 }, { 2, 26 } },
59 { { 3, 0 }, { 3, 6 } },
60 { { 3, 12 }, { 3, 18 } },
61 { { 4, 2 }, { 4, 9 } },
62 { { 4, 14 }, { 4, 21 } },
63 { { 4, 26 }, { 5, 1 } },
64 },
65 };
66
calibrate_v1(struct tsens_priv * priv)67 static int calibrate_v1(struct tsens_priv *priv)
68 {
69 u32 p1[10], p2[10];
70 u32 *qfprom_cdata;
71 int mode, ret;
72
73 ret = tsens_calibrate_common(priv);
74 if (!ret)
75 return 0;
76
77 qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");
78 if (IS_ERR(qfprom_cdata))
79 return PTR_ERR(qfprom_cdata);
80
81 mode = tsens_read_calibration_legacy(priv, &tsens_qcs404_nvmem,
82 p1, p2,
83 qfprom_cdata, NULL);
84
85 compute_intercept_slope(priv, p1, p2, mode);
86 kfree(qfprom_cdata);
87
88 return 0;
89 }
90
91 /* v1.x: msm8956,8976,qcs404,405 */
92
93 static struct tsens_features tsens_v1_feat = {
94 .ver_major = VER_1_X,
95 .crit_int = 0,
96 .combo_int = 0,
97 .adc = 1,
98 .srot_split = 1,
99 .max_sensors = 11,
100 .trip_min_temp = -40000,
101 .trip_max_temp = 120000,
102 };
103
104 static const struct reg_field tsens_v1_regfields[MAX_REGFIELDS] = {
105 /* ----- SROT ------ */
106 /* VERSION */
107 [VER_MAJOR] = REG_FIELD(SROT_HW_VER_OFF, 28, 31),
108 [VER_MINOR] = REG_FIELD(SROT_HW_VER_OFF, 16, 27),
109 [VER_STEP] = REG_FIELD(SROT_HW_VER_OFF, 0, 15),
110 /* CTRL_OFFSET */
111 [TSENS_EN] = REG_FIELD(SROT_CTRL_OFF, 0, 0),
112 [TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF, 1, 1),
113 [SENSOR_EN] = REG_FIELD(SROT_CTRL_OFF, 3, 13),
114
115 /* ----- TM ------ */
116 /* INTERRUPT ENABLE */
117 [INT_EN] = REG_FIELD(TM_INT_EN_OFF, 0, 0),
118
119 /* UPPER/LOWER TEMPERATURE THRESHOLDS */
120 REG_FIELD_FOR_EACH_SENSOR11(LOW_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 0, 9),
121 REG_FIELD_FOR_EACH_SENSOR11(UP_THRESH, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 10, 19),
122
123 /* UPPER/LOWER INTERRUPTS [CLEAR/STATUS] */
124 REG_FIELD_FOR_EACH_SENSOR11(LOW_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 20, 20),
125 REG_FIELD_FOR_EACH_SENSOR11(UP_INT_CLEAR, TM_Sn_UPPER_LOWER_STATUS_CTRL_OFF, 21, 21),
126 [LOW_INT_STATUS_0] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 0, 0),
127 [LOW_INT_STATUS_1] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 1, 1),
128 [LOW_INT_STATUS_2] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 2, 2),
129 [LOW_INT_STATUS_3] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 3, 3),
130 [LOW_INT_STATUS_4] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 4, 4),
131 [LOW_INT_STATUS_5] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 5, 5),
132 [LOW_INT_STATUS_6] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 6, 6),
133 [LOW_INT_STATUS_7] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 7, 7),
134 [UP_INT_STATUS_0] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 8, 8),
135 [UP_INT_STATUS_1] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 9, 9),
136 [UP_INT_STATUS_2] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 10, 10),
137 [UP_INT_STATUS_3] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 11, 11),
138 [UP_INT_STATUS_4] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 12, 12),
139 [UP_INT_STATUS_5] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 13, 13),
140 [UP_INT_STATUS_6] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 14, 14),
141 [UP_INT_STATUS_7] = REG_FIELD(TM_HIGH_LOW_INT_STATUS_OFF, 15, 15),
142
143 /* NO CRITICAL INTERRUPT SUPPORT on v1 */
144
145 /* Sn_STATUS */
146 REG_FIELD_FOR_EACH_SENSOR11(LAST_TEMP, TM_Sn_STATUS_OFF, 0, 9),
147 REG_FIELD_FOR_EACH_SENSOR11(VALID, TM_Sn_STATUS_OFF, 14, 14),
148 /* xxx_STATUS bits: 1 == threshold violated */
149 REG_FIELD_FOR_EACH_SENSOR11(MIN_STATUS, TM_Sn_STATUS_OFF, 10, 10),
150 REG_FIELD_FOR_EACH_SENSOR11(LOWER_STATUS, TM_Sn_STATUS_OFF, 11, 11),
151 REG_FIELD_FOR_EACH_SENSOR11(UPPER_STATUS, TM_Sn_STATUS_OFF, 12, 12),
152 /* No CRITICAL field on v1.x */
153 REG_FIELD_FOR_EACH_SENSOR11(MAX_STATUS, TM_Sn_STATUS_OFF, 13, 13),
154
155 /* TRDY: 1=ready, 0=in progress */
156 [TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0),
157 };
158
init_8956(struct tsens_priv * priv)159 static int __init init_8956(struct tsens_priv *priv) {
160 priv->sensor[0].slope = 3313;
161 priv->sensor[1].slope = 3275;
162 priv->sensor[2].slope = 3320;
163 priv->sensor[3].slope = 3246;
164 priv->sensor[4].slope = 3279;
165 priv->sensor[5].slope = 3257;
166 priv->sensor[6].slope = 3234;
167 priv->sensor[7].slope = 3269;
168 priv->sensor[8].slope = 3255;
169 priv->sensor[9].slope = 3239;
170 priv->sensor[10].slope = 3286;
171
172 return init_common(priv);
173 }
174
175 static const struct tsens_ops ops_generic_v1 = {
176 .init = init_common,
177 .calibrate = calibrate_v1,
178 .get_temp = get_temp_tsens_valid,
179 };
180
181 struct tsens_plat_data data_tsens_v1 = {
182 .ops = &ops_generic_v1,
183 .feat = &tsens_v1_feat,
184 .fields = tsens_v1_regfields,
185 };
186
187 static const struct tsens_ops ops_8956 = {
188 .init = init_8956,
189 .calibrate = tsens_calibrate_common,
190 .get_temp = get_temp_tsens_valid,
191 };
192
193 struct tsens_plat_data data_8956 = {
194 .num_sensors = 11,
195 .ops = &ops_8956,
196 .feat = &tsens_v1_feat,
197 .fields = tsens_v1_regfields,
198 };
199
200 static const struct tsens_ops ops_8976 = {
201 .init = init_common,
202 .calibrate = tsens_calibrate_common,
203 .get_temp = get_temp_tsens_valid,
204 };
205
206 struct tsens_plat_data data_8976 = {
207 .num_sensors = 11,
208 .ops = &ops_8976,
209 .feat = &tsens_v1_feat,
210 .fields = tsens_v1_regfields,
211 };
212