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5
6#include <linux/kernel.h>
7#include <linux/module.h>
8#include <linux/spmi.h>
9#include <linux/regmap.h>
10#include <linux/of_platform.h>
11
12#define PMIC_REV2 0x101
13#define PMIC_REV3 0x102
14#define PMIC_REV4 0x103
15#define PMIC_TYPE 0x104
16#define PMIC_SUBTYPE 0x105
17
18#define PMIC_TYPE_VALUE 0x51
19
20#define COMMON_SUBTYPE 0x00
21#define PM8941_SUBTYPE 0x01
22#define PM8841_SUBTYPE 0x02
23#define PM8019_SUBTYPE 0x03
24#define PM8226_SUBTYPE 0x04
25#define PM8110_SUBTYPE 0x05
26#define PMA8084_SUBTYPE 0x06
27#define PMI8962_SUBTYPE 0x07
28#define PMD9635_SUBTYPE 0x08
29#define PM8994_SUBTYPE 0x09
30#define PMI8994_SUBTYPE 0x0a
31#define PM8916_SUBTYPE 0x0b
32#define PM8004_SUBTYPE 0x0c
33#define PM8909_SUBTYPE 0x0d
34#define PM8950_SUBTYPE 0x10
35#define PMI8950_SUBTYPE 0x11
36#define PM8998_SUBTYPE 0x14
37#define PMI8998_SUBTYPE 0x15
38#define PM8005_SUBTYPE 0x18
39#define PM660L_SUBTYPE 0x1A
40#define PM660_SUBTYPE 0x1B
41
42static const struct of_device_id pmic_spmi_id_table[] = {
43 { .compatible = "qcom,spmi-pmic", .data = (void *)COMMON_SUBTYPE },
44 { .compatible = "qcom,pm8941", .data = (void *)PM8941_SUBTYPE },
45 { .compatible = "qcom,pm8841", .data = (void *)PM8841_SUBTYPE },
46 { .compatible = "qcom,pm8019", .data = (void *)PM8019_SUBTYPE },
47 { .compatible = "qcom,pm8226", .data = (void *)PM8226_SUBTYPE },
48 { .compatible = "qcom,pm8110", .data = (void *)PM8110_SUBTYPE },
49 { .compatible = "qcom,pma8084", .data = (void *)PMA8084_SUBTYPE },
50 { .compatible = "qcom,pmi8962", .data = (void *)PMI8962_SUBTYPE },
51 { .compatible = "qcom,pmd9635", .data = (void *)PMD9635_SUBTYPE },
52 { .compatible = "qcom,pm8994", .data = (void *)PM8994_SUBTYPE },
53 { .compatible = "qcom,pmi8994", .data = (void *)PMI8994_SUBTYPE },
54 { .compatible = "qcom,pm8916", .data = (void *)PM8916_SUBTYPE },
55 { .compatible = "qcom,pm8004", .data = (void *)PM8004_SUBTYPE },
56 { .compatible = "qcom,pm8909", .data = (void *)PM8909_SUBTYPE },
57 { .compatible = "qcom,pm8950", .data = (void *)PM8950_SUBTYPE },
58 { .compatible = "qcom,pmi8950", .data = (void *)PMI8950_SUBTYPE },
59 { .compatible = "qcom,pm8998", .data = (void *)PM8998_SUBTYPE },
60 { .compatible = "qcom,pmi8998", .data = (void *)PMI8998_SUBTYPE },
61 { .compatible = "qcom,pm8005", .data = (void *)PM8005_SUBTYPE },
62 { .compatible = "qcom,pm660l", .data = (void *)PM660L_SUBTYPE },
63 { .compatible = "qcom,pm660", .data = (void *)PM660_SUBTYPE },
64 { }
65};
66
67static void pmic_spmi_show_revid(struct regmap *map, struct device *dev)
68{
69 unsigned int rev2, minor, major, type, subtype;
70 const char *name = "unknown";
71 int ret, i;
72
73 ret = regmap_read(map, PMIC_TYPE, &type);
74 if (ret < 0)
75 return;
76
77 if (type != PMIC_TYPE_VALUE)
78 return;
79
80 ret = regmap_read(map, PMIC_SUBTYPE, &subtype);
81 if (ret < 0)
82 return;
83
84 for (i = 0; i < ARRAY_SIZE(pmic_spmi_id_table); i++) {
85 if (subtype == (unsigned long)pmic_spmi_id_table[i].data)
86 break;
87 }
88
89 if (i != ARRAY_SIZE(pmic_spmi_id_table))
90 name = pmic_spmi_id_table[i].compatible;
91
92 ret = regmap_read(map, PMIC_REV2, &rev2);
93 if (ret < 0)
94 return;
95
96 ret = regmap_read(map, PMIC_REV3, &minor);
97 if (ret < 0)
98 return;
99
100 ret = regmap_read(map, PMIC_REV4, &major);
101 if (ret < 0)
102 return;
103
104
105
106
107
108
109
110 if ((subtype == PM8941_SUBTYPE || subtype == PM8226_SUBTYPE) &&
111 major < 0x02)
112 major++;
113
114 if (subtype == PM8110_SUBTYPE)
115 minor = rev2;
116
117 dev_dbg(dev, "%x: %s v%d.%d\n", subtype, name, major, minor);
118}
119
120static const struct regmap_config spmi_regmap_config = {
121 .reg_bits = 16,
122 .val_bits = 8,
123 .max_register = 0xffff,
124 .fast_io = true,
125};
126
127static int pmic_spmi_probe(struct spmi_device *sdev)
128{
129 struct regmap *regmap;
130
131 regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config);
132 if (IS_ERR(regmap))
133 return PTR_ERR(regmap);
134
135
136 if (sdev->usid % 2 == 0)
137 pmic_spmi_show_revid(regmap, &sdev->dev);
138
139 return devm_of_platform_populate(&sdev->dev);
140}
141
142MODULE_DEVICE_TABLE(of, pmic_spmi_id_table);
143
144static struct spmi_driver pmic_spmi_driver = {
145 .probe = pmic_spmi_probe,
146 .driver = {
147 .name = "pmic-spmi",
148 .of_match_table = pmic_spmi_id_table,
149 },
150};
151module_spmi_driver(pmic_spmi_driver);
152
153MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver");
154MODULE_ALIAS("spmi:spmi-pmic");
155MODULE_LICENSE("GPL v2");
156MODULE_AUTHOR("Josh Cartwright <joshc@codeaurora.org>");
157MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");
158
