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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 | /* * Copyright (c) 2014, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and * only version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/spmi.h> #include <linux/regmap.h> #include <linux/of_platform.h> #define PMIC_REV2 0x101 #define PMIC_REV3 0x102 #define PMIC_REV4 0x103 #define PMIC_TYPE 0x104 #define PMIC_SUBTYPE 0x105 #define PMIC_TYPE_VALUE 0x51 #define COMMON_SUBTYPE 0x00 #define PM8941_SUBTYPE 0x01 #define PM8841_SUBTYPE 0x02 #define PM8019_SUBTYPE 0x03 #define PM8226_SUBTYPE 0x04 #define PM8110_SUBTYPE 0x05 #define PMA8084_SUBTYPE 0x06 #define PMI8962_SUBTYPE 0x07 #define PMD9635_SUBTYPE 0x08 #define PM8994_SUBTYPE 0x09 #define PMI8994_SUBTYPE 0x0a #define PM8916_SUBTYPE 0x0b #define PM8004_SUBTYPE 0x0c #define PM8909_SUBTYPE 0x0d #define PM8998_SUBTYPE 0x14 #define PMI8998_SUBTYPE 0x15 #define PM8005_SUBTYPE 0x18 static const struct of_device_id pmic_spmi_id_table[] = { { .compatible = "qcom,spmi-pmic", .data = (void *)COMMON_SUBTYPE }, { .compatible = "qcom,pm8941", .data = (void *)PM8941_SUBTYPE }, { .compatible = "qcom,pm8841", .data = (void *)PM8841_SUBTYPE }, { .compatible = "qcom,pm8019", .data = (void *)PM8019_SUBTYPE }, { .compatible = "qcom,pm8226", .data = (void *)PM8226_SUBTYPE }, { .compatible = "qcom,pm8110", .data = (void *)PM8110_SUBTYPE }, { .compatible = "qcom,pma8084", .data = (void *)PMA8084_SUBTYPE }, { .compatible = "qcom,pmi8962", .data = (void *)PMI8962_SUBTYPE }, { .compatible = "qcom,pmd9635", .data = (void *)PMD9635_SUBTYPE }, { .compatible = "qcom,pm8994", .data = (void *)PM8994_SUBTYPE }, { .compatible = "qcom,pmi8994", .data = (void *)PMI8994_SUBTYPE }, { .compatible = "qcom,pm8916", .data = (void *)PM8916_SUBTYPE }, { .compatible = "qcom,pm8004", .data = (void *)PM8004_SUBTYPE }, { .compatible = "qcom,pm8909", .data = (void *)PM8909_SUBTYPE }, { .compatible = "qcom,pm8998", .data = (void *)PM8998_SUBTYPE }, { .compatible = "qcom,pmi8998", .data = (void *)PMI8998_SUBTYPE }, { .compatible = "qcom,pm8005", .data = (void *)PM8005_SUBTYPE }, { } }; static void pmic_spmi_show_revid(struct regmap *map, struct device *dev) { unsigned int rev2, minor, major, type, subtype; const char *name = "unknown"; int ret, i; ret = regmap_read(map, PMIC_TYPE, &type); if (ret < 0) return; if (type != PMIC_TYPE_VALUE) return; ret = regmap_read(map, PMIC_SUBTYPE, &subtype); if (ret < 0) return; for (i = 0; i < ARRAY_SIZE(pmic_spmi_id_table); i++) { if (subtype == (unsigned long)pmic_spmi_id_table[i].data) break; } if (i != ARRAY_SIZE(pmic_spmi_id_table)) name = pmic_spmi_id_table[i].compatible; ret = regmap_read(map, PMIC_REV2, &rev2); if (ret < 0) return; ret = regmap_read(map, PMIC_REV3, &minor); if (ret < 0) return; ret = regmap_read(map, PMIC_REV4, &major); if (ret < 0) return; /* * In early versions of PM8941 and PM8226, the major revision number * started incrementing from 0 (eg 0 = v1.0, 1 = v2.0). * Increment the major revision number here if the chip is an early * version of PM8941 or PM8226. */ if ((subtype == PM8941_SUBTYPE || subtype == PM8226_SUBTYPE) && major < 0x02) major++; if (subtype == PM8110_SUBTYPE) minor = rev2; dev_dbg(dev, "%x: %s v%d.%d\n", subtype, name, major, minor); } static const struct regmap_config spmi_regmap_config = { .reg_bits = 16, .val_bits = 8, .max_register = 0xffff, .fast_io = true, }; static int pmic_spmi_probe(struct spmi_device *sdev) { struct regmap *regmap; regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config); if (IS_ERR(regmap)) return PTR_ERR(regmap); /* Only the first slave id for a PMIC contains this information */ if (sdev->usid % 2 == 0) pmic_spmi_show_revid(regmap, &sdev->dev); return devm_of_platform_populate(&sdev->dev); } MODULE_DEVICE_TABLE(of, pmic_spmi_id_table); static struct spmi_driver pmic_spmi_driver = { .probe = pmic_spmi_probe, .driver = { .name = "pmic-spmi", .of_match_table = pmic_spmi_id_table, }, }; module_spmi_driver(pmic_spmi_driver); MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver"); MODULE_ALIAS("spmi:spmi-pmic"); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Josh Cartwright <joshc@codeaurora.org>"); MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>"); |