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9#include <linux/of.h>
10#include <linux/module.h>
11#include <linux/mfd/syscon.h>
12
13#include "st_thermal.h"
14
15
16#define STIH415_SYSCFG_FRONT(num) ((num - 100) * 4)
17#define STIH415_SAS_THSENS_CONF STIH415_SYSCFG_FRONT(178)
18#define STIH415_SAS_THSENS_STATUS STIH415_SYSCFG_FRONT(198)
19#define STIH415_SYSCFG_MPE(num) ((num - 600) * 4)
20#define STIH415_MPE_THSENS_CONF STIH415_SYSCFG_MPE(607)
21#define STIH415_MPE_THSENS_STATUS STIH415_SYSCFG_MPE(667)
22
23
24#define STIH416_SYSCFG_FRONT(num) ((num - 1000) * 4)
25#define STIH416_SAS_THSENS_CONF STIH416_SYSCFG_FRONT(1552)
26#define STIH416_SAS_THSENS_STATUS1 STIH416_SYSCFG_FRONT(1554)
27#define STIH416_SAS_THSENS_STATUS2 STIH416_SYSCFG_FRONT(1594)
28
29
30#define STID127_SYSCFG_CPU(num) ((num - 700) * 4)
31#define STID127_THSENS_CONF STID127_SYSCFG_CPU(743)
32#define STID127_THSENS_STATUS STID127_SYSCFG_CPU(767)
33
34static const struct reg_field st_415sas_regfields[MAX_REGFIELDS] = {
35 [TEMP_PWR] = REG_FIELD(STIH415_SAS_THSENS_CONF, 9, 9),
36 [DCORRECT] = REG_FIELD(STIH415_SAS_THSENS_CONF, 4, 8),
37 [OVERFLOW] = REG_FIELD(STIH415_SAS_THSENS_STATUS, 8, 8),
38 [DATA] = REG_FIELD(STIH415_SAS_THSENS_STATUS, 10, 16),
39};
40
41static const struct reg_field st_415mpe_regfields[MAX_REGFIELDS] = {
42 [TEMP_PWR] = REG_FIELD(STIH415_MPE_THSENS_CONF, 8, 8),
43 [DCORRECT] = REG_FIELD(STIH415_MPE_THSENS_CONF, 3, 7),
44 [OVERFLOW] = REG_FIELD(STIH415_MPE_THSENS_STATUS, 9, 9),
45 [DATA] = REG_FIELD(STIH415_MPE_THSENS_STATUS, 11, 18),
46};
47
48static const struct reg_field st_416sas_regfields[MAX_REGFIELDS] = {
49 [TEMP_PWR] = REG_FIELD(STIH416_SAS_THSENS_CONF, 9, 9),
50 [DCORRECT] = REG_FIELD(STIH416_SAS_THSENS_CONF, 4, 8),
51 [OVERFLOW] = REG_FIELD(STIH416_SAS_THSENS_STATUS1, 8, 8),
52 [DATA] = REG_FIELD(STIH416_SAS_THSENS_STATUS2, 10, 16),
53};
54
55static const struct reg_field st_127_regfields[MAX_REGFIELDS] = {
56 [TEMP_PWR] = REG_FIELD(STID127_THSENS_CONF, 7, 7),
57 [DCORRECT] = REG_FIELD(STID127_THSENS_CONF, 2, 6),
58 [OVERFLOW] = REG_FIELD(STID127_THSENS_STATUS, 9, 9),
59 [DATA] = REG_FIELD(STID127_THSENS_STATUS, 11, 18),
60};
61
62
63static int st_syscfg_power_ctrl(struct st_thermal_sensor *sensor,
64 enum st_thermal_power_state power_state)
65{
66 return regmap_field_write(sensor->pwr, power_state);
67}
68
69static int st_syscfg_alloc_regfields(struct st_thermal_sensor *sensor)
70{
71 struct device *dev = sensor->dev;
72
73 sensor->pwr = devm_regmap_field_alloc(dev, sensor->regmap,
74 sensor->cdata->reg_fields[TEMP_PWR]);
75
76 if (IS_ERR(sensor->pwr)) {
77 dev_err(dev, "failed to alloc syscfg regfields\n");
78 return PTR_ERR(sensor->pwr);
79 }
80
81 return 0;
82}
83
84static int st_syscfg_regmap_init(struct st_thermal_sensor *sensor)
85{
86 sensor->regmap =
87 syscon_regmap_lookup_by_compatible(sensor->cdata->sys_compat);
88 if (IS_ERR(sensor->regmap)) {
89 dev_err(sensor->dev, "failed to find syscfg regmap\n");
90 return PTR_ERR(sensor->regmap);
91 }
92
93 return 0;
94}
95
96static const struct st_thermal_sensor_ops st_syscfg_sensor_ops = {
97 .power_ctrl = st_syscfg_power_ctrl,
98 .alloc_regfields = st_syscfg_alloc_regfields,
99 .regmap_init = st_syscfg_regmap_init,
100};
101
102
103static const struct st_thermal_compat_data st_415sas_cdata = {
104 .sys_compat = "st,stih415-front-syscfg",
105 .reg_fields = st_415sas_regfields,
106 .ops = &st_syscfg_sensor_ops,
107 .calibration_val = 16,
108 .temp_adjust_val = 20,
109 .crit_temp = 120,
110};
111
112
113static const struct st_thermal_compat_data st_415mpe_cdata = {
114 .sys_compat = "st,stih415-system-syscfg",
115 .reg_fields = st_415mpe_regfields,
116 .ops = &st_syscfg_sensor_ops,
117 .calibration_val = 16,
118 .temp_adjust_val = -103,
119 .crit_temp = 120,
120};
121
122
123static const struct st_thermal_compat_data st_416sas_cdata = {
124 .sys_compat = "st,stih416-front-syscfg",
125 .reg_fields = st_416sas_regfields,
126 .ops = &st_syscfg_sensor_ops,
127 .calibration_val = 16,
128 .temp_adjust_val = 20,
129 .crit_temp = 120,
130};
131
132
133static const struct st_thermal_compat_data st_127_cdata = {
134 .sys_compat = "st,stid127-cpu-syscfg",
135 .reg_fields = st_127_regfields,
136 .ops = &st_syscfg_sensor_ops,
137 .calibration_val = 8,
138 .temp_adjust_val = -103,
139 .crit_temp = 120,
140};
141
142static const struct of_device_id st_syscfg_thermal_of_match[] = {
143 { .compatible = "st,stih415-sas-thermal", .data = &st_415sas_cdata },
144 { .compatible = "st,stih415-mpe-thermal", .data = &st_415mpe_cdata },
145 { .compatible = "st,stih416-sas-thermal", .data = &st_416sas_cdata },
146 { .compatible = "st,stid127-thermal", .data = &st_127_cdata },
147 { }
148};
149MODULE_DEVICE_TABLE(of, st_syscfg_thermal_of_match);
150
151static int st_syscfg_probe(struct platform_device *pdev)
152{
153 return st_thermal_register(pdev, st_syscfg_thermal_of_match);
154}
155
156static int st_syscfg_remove(struct platform_device *pdev)
157{
158 return st_thermal_unregister(pdev);
159}
160
161static struct platform_driver st_syscfg_thermal_driver = {
162 .driver = {
163 .name = "st_syscfg_thermal",
164 .pm = &st_thermal_pm_ops,
165 .of_match_table = st_syscfg_thermal_of_match,
166 },
167 .probe = st_syscfg_probe,
168 .remove = st_syscfg_remove,
169};
170module_platform_driver(st_syscfg_thermal_driver);
171
172MODULE_AUTHOR("STMicroelectronics (R&D) Limited <ajitpal.singh@st.com>");
173MODULE_DESCRIPTION("STMicroelectronics STi SoC Thermal Sensor Driver");
174MODULE_LICENSE("GPL v2");
175
