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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 | /* * Copyright (c) 2017 BayLibre, SAS * Author: Neil Armstrong <narmstrong@baylibre.com> * * SPDX-License-Identifier: GPL-2.0+ */ #include <linux/io.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/sys_soc.h> #include <linux/bitfield.h> #include <linux/regmap.h> #include <linux/mfd/syscon.h> #define AO_SEC_SD_CFG8 0xe0 #define AO_SEC_SOCINFO_OFFSET AO_SEC_SD_CFG8 #define SOCINFO_MAJOR GENMASK(31, 24) #define SOCINFO_PACK GENMASK(23, 16) #define SOCINFO_MINOR GENMASK(15, 8) #define SOCINFO_MISC GENMASK(7, 0) static const struct meson_gx_soc_id { const char *name; unsigned int id; } soc_ids[] = { { "GXBB", 0x1f }, { "GXTVBB", 0x20 }, { "GXL", 0x21 }, { "GXM", 0x22 }, { "TXL", 0x23 }, { "TXLX", 0x24 }, { "AXG", 0x25 }, { "GXLX", 0x26 }, { "TXHD", 0x27 }, { "G12A", 0x28 }, { "G12B", 0x29 }, { "SM1", 0x2b }, { "A1", 0x2c }, }; static const struct meson_gx_package_id { const char *name; unsigned int major_id; unsigned int pack_id; unsigned int pack_mask; } soc_packages[] = { { "S905", 0x1f, 0, 0x20 }, /* pack_id != 0x20 */ { "S905H", 0x1f, 0x3, 0xf }, /* pack_id & 0xf == 0x3 */ { "S905M", 0x1f, 0x20, 0xf0 }, /* pack_id == 0x20 */ { "S905D", 0x21, 0, 0xf0 }, { "S905X", 0x21, 0x80, 0xf0 }, { "S905W", 0x21, 0xa0, 0xf0 }, { "S905L", 0x21, 0xc0, 0xf0 }, { "S905M2", 0x21, 0xe0, 0xf0 }, { "S805X", 0x21, 0x30, 0xf0 }, { "S805Y", 0x21, 0xb0, 0xf0 }, { "S912", 0x22, 0, 0x0 }, /* Only S912 is known for GXM */ { "962X", 0x24, 0x10, 0xf0 }, { "962E", 0x24, 0x20, 0xf0 }, { "A113X", 0x25, 0x37, 0xff }, { "A113D", 0x25, 0x22, 0xff }, { "S905D2", 0x28, 0x10, 0xf0 }, { "S905Y2", 0x28, 0x30, 0xf0 }, { "S905X2", 0x28, 0x40, 0xf0 }, { "A311D", 0x29, 0x10, 0xf0 }, { "S922X", 0x29, 0x40, 0xf0 }, { "S905D3", 0x2b, 0x4, 0xf5 }, { "S905X3", 0x2b, 0x5, 0xf5 }, { "S905X3", 0x2b, 0x10, 0x3f }, { "S905D3", 0x2b, 0x30, 0x3f }, { "A113L", 0x2c, 0x0, 0xf8 }, }; static inline unsigned int socinfo_to_major(u32 socinfo) { return FIELD_GET(SOCINFO_MAJOR, socinfo); } static inline unsigned int socinfo_to_minor(u32 socinfo) { return FIELD_GET(SOCINFO_MINOR, socinfo); } static inline unsigned int socinfo_to_pack(u32 socinfo) { return FIELD_GET(SOCINFO_PACK, socinfo); } static inline unsigned int socinfo_to_misc(u32 socinfo) { return FIELD_GET(SOCINFO_MISC, socinfo); } static const char *socinfo_to_package_id(u32 socinfo) { unsigned int pack = socinfo_to_pack(socinfo); unsigned int major = socinfo_to_major(socinfo); int i; for (i = 0 ; i < ARRAY_SIZE(soc_packages) ; ++i) { if (soc_packages[i].major_id == major && soc_packages[i].pack_id == (pack & soc_packages[i].pack_mask)) return soc_packages[i].name; } return "Unknown"; } static const char *socinfo_to_soc_id(u32 socinfo) { unsigned int id = socinfo_to_major(socinfo); int i; for (i = 0 ; i < ARRAY_SIZE(soc_ids) ; ++i) { if (soc_ids[i].id == id) return soc_ids[i].name; } return "Unknown"; } static int __init meson_gx_socinfo_init(void) { struct soc_device_attribute *soc_dev_attr; struct soc_device *soc_dev; struct device_node *np; struct regmap *regmap; unsigned int socinfo; struct device *dev; int ret; /* look up for chipid node */ np = of_find_compatible_node(NULL, NULL, "amlogic,meson-gx-ao-secure"); if (!np) return -ENODEV; /* check if interface is enabled */ if (!of_device_is_available(np)) { of_node_put(np); return -ENODEV; } /* check if chip-id is available */ if (!of_property_read_bool(np, "amlogic,has-chip-id")) { of_node_put(np); return -ENODEV; } /* node should be a syscon */ regmap = syscon_node_to_regmap(np); of_node_put(np); if (IS_ERR(regmap)) { pr_err("%s: failed to get regmap\n", __func__); return -ENODEV; } ret = regmap_read(regmap, AO_SEC_SOCINFO_OFFSET, &socinfo); if (ret < 0) return ret; if (!socinfo) { pr_err("%s: invalid chipid value\n", __func__); return -EINVAL; } soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); if (!soc_dev_attr) return -ENODEV; soc_dev_attr->family = "Amlogic Meson"; soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%x:%x - %x:%x", socinfo_to_major(socinfo), socinfo_to_minor(socinfo), socinfo_to_pack(socinfo), socinfo_to_misc(socinfo)); soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%s (%s)", socinfo_to_soc_id(socinfo), socinfo_to_package_id(socinfo)); soc_dev = soc_device_register(soc_dev_attr); if (IS_ERR(soc_dev)) { kfree(soc_dev_attr->revision); kfree_const(soc_dev_attr->soc_id); kfree(soc_dev_attr); return PTR_ERR(soc_dev); } dev = soc_device_to_device(soc_dev); dev_info(dev, "Amlogic Meson %s Revision %x:%x (%x:%x) Detected\n", soc_dev_attr->soc_id, socinfo_to_major(socinfo), socinfo_to_minor(socinfo), socinfo_to_pack(socinfo), socinfo_to_misc(socinfo)); return 0; } device_initcall(meson_gx_socinfo_init); |