xref: /openbmc/linux/drivers/thermal/qcom/tsens-v1.c (revision 02cf5bcb)
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 
calibrate_v1(struct tsens_priv * priv)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 
init_8956(struct tsens_priv * priv)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 };
190