This source file includes following definitions.
- socinfo_to_major
- socinfo_to_minor
- socinfo_to_pack
- socinfo_to_misc
- socinfo_to_package_id
- socinfo_to_soc_id
- meson_gx_socinfo_init
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8 #include <linux/io.h>
9 #include <linux/of.h>
10 #include <linux/of_address.h>
11 #include <linux/of_platform.h>
12 #include <linux/platform_device.h>
13 #include <linux/slab.h>
14 #include <linux/sys_soc.h>
15 #include <linux/bitfield.h>
16 #include <linux/regmap.h>
17 #include <linux/mfd/syscon.h>
18
19 #define AO_SEC_SD_CFG8 0xe0
20 #define AO_SEC_SOCINFO_OFFSET AO_SEC_SD_CFG8
21
22 #define SOCINFO_MAJOR GENMASK(31, 24)
23 #define SOCINFO_PACK GENMASK(23, 16)
24 #define SOCINFO_MINOR GENMASK(15, 8)
25 #define SOCINFO_MISC GENMASK(7, 0)
26
27 static const struct meson_gx_soc_id {
28 const char *name;
29 unsigned int id;
30 } soc_ids[] = {
31 { "GXBB", 0x1f },
32 { "GXTVBB", 0x20 },
33 { "GXL", 0x21 },
34 { "GXM", 0x22 },
35 { "TXL", 0x23 },
36 { "TXLX", 0x24 },
37 { "AXG", 0x25 },
38 { "GXLX", 0x26 },
39 { "TXHD", 0x27 },
40 { "G12A", 0x28 },
41 { "G12B", 0x29 },
42 { "SM1", 0x2b },
43 };
44
45 static const struct meson_gx_package_id {
46 const char *name;
47 unsigned int major_id;
48 unsigned int pack_id;
49 unsigned int pack_mask;
50 } soc_packages[] = {
51 { "S905", 0x1f, 0, 0x20 },
52 { "S905H", 0x1f, 0x3, 0xf },
53 { "S905M", 0x1f, 0x20, 0xf0 },
54 { "S905D", 0x21, 0, 0xf0 },
55 { "S905X", 0x21, 0x80, 0xf0 },
56 { "S905W", 0x21, 0xa0, 0xf0 },
57 { "S905L", 0x21, 0xc0, 0xf0 },
58 { "S905M2", 0x21, 0xe0, 0xf0 },
59 { "S805X", 0x21, 0x30, 0xf0 },
60 { "S805Y", 0x21, 0xb0, 0xf0 },
61 { "S912", 0x22, 0, 0x0 },
62 { "962X", 0x24, 0x10, 0xf0 },
63 { "962E", 0x24, 0x20, 0xf0 },
64 { "A113X", 0x25, 0x37, 0xff },
65 { "A113D", 0x25, 0x22, 0xff },
66 { "S905D2", 0x28, 0x10, 0xf0 },
67 { "S905X2", 0x28, 0x40, 0xf0 },
68 { "S922X", 0x29, 0x40, 0xf0 },
69 { "A311D", 0x29, 0x10, 0xf0 },
70 { "S905X3", 0x2b, 0x5, 0xf },
71 };
72
73 static inline unsigned int socinfo_to_major(u32 socinfo)
74 {
75 return FIELD_GET(SOCINFO_MAJOR, socinfo);
76 }
77
78 static inline unsigned int socinfo_to_minor(u32 socinfo)
79 {
80 return FIELD_GET(SOCINFO_MINOR, socinfo);
81 }
82
83 static inline unsigned int socinfo_to_pack(u32 socinfo)
84 {
85 return FIELD_GET(SOCINFO_PACK, socinfo);
86 }
87
88 static inline unsigned int socinfo_to_misc(u32 socinfo)
89 {
90 return FIELD_GET(SOCINFO_MISC, socinfo);
91 }
92
93 static const char *socinfo_to_package_id(u32 socinfo)
94 {
95 unsigned int pack = socinfo_to_pack(socinfo);
96 unsigned int major = socinfo_to_major(socinfo);
97 int i;
98
99 for (i = 0 ; i < ARRAY_SIZE(soc_packages) ; ++i) {
100 if (soc_packages[i].major_id == major &&
101 soc_packages[i].pack_id ==
102 (pack & soc_packages[i].pack_mask))
103 return soc_packages[i].name;
104 }
105
106 return "Unknown";
107 }
108
109 static const char *socinfo_to_soc_id(u32 socinfo)
110 {
111 unsigned int id = socinfo_to_major(socinfo);
112 int i;
113
114 for (i = 0 ; i < ARRAY_SIZE(soc_ids) ; ++i) {
115 if (soc_ids[i].id == id)
116 return soc_ids[i].name;
117 }
118
119 return "Unknown";
120 }
121
122 static int __init meson_gx_socinfo_init(void)
123 {
124 struct soc_device_attribute *soc_dev_attr;
125 struct soc_device *soc_dev;
126 struct device_node *np;
127 struct regmap *regmap;
128 unsigned int socinfo;
129 struct device *dev;
130 int ret;
131
132
133 np = of_find_compatible_node(NULL, NULL, "amlogic,meson-gx-ao-secure");
134 if (!np)
135 return -ENODEV;
136
137
138 if (!of_device_is_available(np)) {
139 of_node_put(np);
140 return -ENODEV;
141 }
142
143
144 if (!of_property_read_bool(np, "amlogic,has-chip-id")) {
145 of_node_put(np);
146 return -ENODEV;
147 }
148
149
150 regmap = syscon_node_to_regmap(np);
151 of_node_put(np);
152 if (IS_ERR(regmap)) {
153 pr_err("%s: failed to get regmap\n", __func__);
154 return -ENODEV;
155 }
156
157 ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo);
158 if (ret < 0)
159 return ret;
160
161 if (!socinfo) {
162 pr_err("%s: invalid chipid value\n", __func__);
163 return -EINVAL;
164 }
165
166 soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
167 if (!soc_dev_attr)
168 return -ENODEV;
169
170 soc_dev_attr->family = "Amlogic Meson";
171
172 np = of_find_node_by_path("/");
173 of_property_read_string(np, "model", &soc_dev_attr->machine);
174 of_node_put(np);
175
176 soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%x:%x - %x:%x",
177 socinfo_to_major(socinfo),
178 socinfo_to_minor(socinfo),
179 socinfo_to_pack(socinfo),
180 socinfo_to_misc(socinfo));
181 soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%s (%s)",
182 socinfo_to_soc_id(socinfo),
183 socinfo_to_package_id(socinfo));
184
185 soc_dev = soc_device_register(soc_dev_attr);
186 if (IS_ERR(soc_dev)) {
187 kfree(soc_dev_attr->revision);
188 kfree_const(soc_dev_attr->soc_id);
189 kfree(soc_dev_attr);
190 return PTR_ERR(soc_dev);
191 }
192 dev = soc_device_to_device(soc_dev);
193
194 dev_info(dev, "Amlogic Meson %s Revision %x:%x (%x:%x) Detected\n",
195 soc_dev_attr->soc_id,
196 socinfo_to_major(socinfo),
197 socinfo_to_minor(socinfo),
198 socinfo_to_pack(socinfo),
199 socinfo_to_misc(socinfo));
200
201 return 0;
202 }
203 device_initcall(meson_gx_socinfo_init);