xref: /openbmc/linux/drivers/thermal/qcom/tsens-v2.c (revision 6840455d)
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 
31 static struct tsens_features tsens_v2_feat = {
32 	.ver_major	= VER_2_X,
33 	.crit_int	= 1,
34 	.combo_int	= 0,
35 	.adc		= 0,
36 	.srot_split	= 1,
37 	.max_sensors	= 16,
38 	.trip_min_temp	= -40000,
39 	.trip_max_temp	= 120000,
40 };
41 
42 static struct tsens_features ipq8074_feat = {
43 	.ver_major	= VER_2_X,
44 	.crit_int	= 1,
45 	.combo_int	= 1,
46 	.adc		= 0,
47 	.srot_split	= 1,
48 	.max_sensors	= 16,
49 	.trip_min_temp	= 0,
50 	.trip_max_temp	= 204000,
51 };
52 
53 static const struct reg_field tsens_v2_regfields[MAX_REGFIELDS] = {
54 	/* ----- SROT ------ */
55 	/* VERSION */
56 	[VER_MAJOR] = REG_FIELD(SROT_HW_VER_OFF, 28, 31),
57 	[VER_MINOR] = REG_FIELD(SROT_HW_VER_OFF, 16, 27),
58 	[VER_STEP]  = REG_FIELD(SROT_HW_VER_OFF,  0, 15),
59 	/* CTRL_OFF */
60 	[TSENS_EN]     = REG_FIELD(SROT_CTRL_OFF,    0,  0),
61 	[TSENS_SW_RST] = REG_FIELD(SROT_CTRL_OFF,    1,  1),
62 
63 	/* ----- TM ------ */
64 	/* INTERRUPT ENABLE */
65 	/* v2 has separate enables for UPPER/LOWER/CRITICAL interrupts */
66 	[INT_EN]  = REG_FIELD(TM_INT_EN_OFF, 0, 2),
67 
68 	/* TEMPERATURE THRESHOLDS */
69 	REG_FIELD_FOR_EACH_SENSOR16(LOW_THRESH,  TM_Sn_UPPER_LOWER_THRESHOLD_OFF,  0,  11),
70 	REG_FIELD_FOR_EACH_SENSOR16(UP_THRESH,   TM_Sn_UPPER_LOWER_THRESHOLD_OFF, 12,  23),
71 	REG_FIELD_FOR_EACH_SENSOR16(CRIT_THRESH, TM_Sn_CRITICAL_THRESHOLD_OFF,     0,  11),
72 
73 	/* INTERRUPTS [CLEAR/STATUS/MASK] */
74 	REG_FIELD_SPLIT_BITS_0_15(LOW_INT_STATUS,  TM_UPPER_LOWER_INT_STATUS_OFF),
75 	REG_FIELD_SPLIT_BITS_0_15(LOW_INT_CLEAR,   TM_UPPER_LOWER_INT_CLEAR_OFF),
76 	REG_FIELD_SPLIT_BITS_0_15(LOW_INT_MASK,    TM_UPPER_LOWER_INT_MASK_OFF),
77 	REG_FIELD_SPLIT_BITS_16_31(UP_INT_STATUS,  TM_UPPER_LOWER_INT_STATUS_OFF),
78 	REG_FIELD_SPLIT_BITS_16_31(UP_INT_CLEAR,   TM_UPPER_LOWER_INT_CLEAR_OFF),
79 	REG_FIELD_SPLIT_BITS_16_31(UP_INT_MASK,    TM_UPPER_LOWER_INT_MASK_OFF),
80 	REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_STATUS, TM_CRITICAL_INT_STATUS_OFF),
81 	REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_CLEAR,  TM_CRITICAL_INT_CLEAR_OFF),
82 	REG_FIELD_SPLIT_BITS_0_15(CRIT_INT_MASK,   TM_CRITICAL_INT_MASK_OFF),
83 
84 	/* WATCHDOG on v2.3 or later */
85 	[WDOG_BARK_STATUS] = REG_FIELD(TM_CRITICAL_INT_STATUS_OFF, 31, 31),
86 	[WDOG_BARK_CLEAR]  = REG_FIELD(TM_CRITICAL_INT_CLEAR_OFF,  31, 31),
87 	[WDOG_BARK_MASK]   = REG_FIELD(TM_CRITICAL_INT_MASK_OFF,   31, 31),
88 	[CC_MON_STATUS]    = REG_FIELD(TM_CRITICAL_INT_STATUS_OFF, 30, 30),
89 	[CC_MON_CLEAR]     = REG_FIELD(TM_CRITICAL_INT_CLEAR_OFF,  30, 30),
90 	[CC_MON_MASK]      = REG_FIELD(TM_CRITICAL_INT_MASK_OFF,   30, 30),
91 	[WDOG_BARK_COUNT]  = REG_FIELD(TM_WDOG_LOG_OFF,             0,  7),
92 
93 	/* Sn_STATUS */
94 	REG_FIELD_FOR_EACH_SENSOR16(LAST_TEMP,       TM_Sn_STATUS_OFF,  0,  11),
95 	REG_FIELD_FOR_EACH_SENSOR16(VALID,           TM_Sn_STATUS_OFF, 21,  21),
96 	/* xxx_STATUS bits: 1 == threshold violated */
97 	REG_FIELD_FOR_EACH_SENSOR16(MIN_STATUS,      TM_Sn_STATUS_OFF, 16,  16),
98 	REG_FIELD_FOR_EACH_SENSOR16(LOWER_STATUS,    TM_Sn_STATUS_OFF, 17,  17),
99 	REG_FIELD_FOR_EACH_SENSOR16(UPPER_STATUS,    TM_Sn_STATUS_OFF, 18,  18),
100 	REG_FIELD_FOR_EACH_SENSOR16(CRITICAL_STATUS, TM_Sn_STATUS_OFF, 19,  19),
101 	REG_FIELD_FOR_EACH_SENSOR16(MAX_STATUS,      TM_Sn_STATUS_OFF, 20,  20),
102 
103 	/* TRDY: 1=ready, 0=in progress */
104 	[TRDY] = REG_FIELD(TM_TRDY_OFF, 0, 0),
105 };
106 
107 static const struct tsens_ops ops_generic_v2 = {
108 	.init		= init_common,
109 	.get_temp	= get_temp_tsens_valid,
110 };
111 
112 struct tsens_plat_data data_tsens_v2 = {
113 	.ops		= &ops_generic_v2,
114 	.feat		= &tsens_v2_feat,
115 	.fields	= tsens_v2_regfields,
116 };
117 
118 struct tsens_plat_data data_ipq8074 = {
119 	.ops		= &ops_generic_v2,
120 	.feat		= &ipq8074_feat,
121 	.fields	= tsens_v2_regfields,
122 };
123 
124 /* Kept around for backward compatibility with old msm8996.dtsi */
125 struct tsens_plat_data data_8996 = {
126 	.num_sensors	= 13,
127 	.ops		= &ops_generic_v2,
128 	.feat		= &tsens_v2_feat,
129 	.fields	= tsens_v2_regfields,
130 };
131