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157 lines
4.6 KiB
157 lines
4.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Copyright (c) 2014, The Linux Foundation. All rights reserved. |
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*/ |
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/spmi.h> |
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#include <linux/regmap.h> |
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#include <linux/of_platform.h> |
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#define PMIC_REV2 0x101 |
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#define PMIC_REV3 0x102 |
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#define PMIC_REV4 0x103 |
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#define PMIC_TYPE 0x104 |
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#define PMIC_SUBTYPE 0x105 |
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#define PMIC_TYPE_VALUE 0x51 |
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#define COMMON_SUBTYPE 0x00 |
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#define PM8941_SUBTYPE 0x01 |
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#define PM8841_SUBTYPE 0x02 |
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#define PM8019_SUBTYPE 0x03 |
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#define PM8226_SUBTYPE 0x04 |
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#define PM8110_SUBTYPE 0x05 |
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#define PMA8084_SUBTYPE 0x06 |
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#define PMI8962_SUBTYPE 0x07 |
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#define PMD9635_SUBTYPE 0x08 |
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#define PM8994_SUBTYPE 0x09 |
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#define PMI8994_SUBTYPE 0x0a |
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#define PM8916_SUBTYPE 0x0b |
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#define PM8004_SUBTYPE 0x0c |
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#define PM8909_SUBTYPE 0x0d |
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#define PM8950_SUBTYPE 0x10 |
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#define PMI8950_SUBTYPE 0x11 |
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#define PM8998_SUBTYPE 0x14 |
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#define PMI8998_SUBTYPE 0x15 |
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#define PM8005_SUBTYPE 0x18 |
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#define PM660L_SUBTYPE 0x1A |
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#define PM660_SUBTYPE 0x1B |
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static const struct of_device_id pmic_spmi_id_table[] = { |
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{ .compatible = "qcom,spmi-pmic", .data = (void *)COMMON_SUBTYPE }, |
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{ .compatible = "qcom,pm8941", .data = (void *)PM8941_SUBTYPE }, |
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{ .compatible = "qcom,pm8841", .data = (void *)PM8841_SUBTYPE }, |
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{ .compatible = "qcom,pm8019", .data = (void *)PM8019_SUBTYPE }, |
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{ .compatible = "qcom,pm8226", .data = (void *)PM8226_SUBTYPE }, |
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{ .compatible = "qcom,pm8110", .data = (void *)PM8110_SUBTYPE }, |
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{ .compatible = "qcom,pma8084", .data = (void *)PMA8084_SUBTYPE }, |
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{ .compatible = "qcom,pmi8962", .data = (void *)PMI8962_SUBTYPE }, |
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{ .compatible = "qcom,pmd9635", .data = (void *)PMD9635_SUBTYPE }, |
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{ .compatible = "qcom,pm8994", .data = (void *)PM8994_SUBTYPE }, |
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{ .compatible = "qcom,pmi8994", .data = (void *)PMI8994_SUBTYPE }, |
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{ .compatible = "qcom,pm8916", .data = (void *)PM8916_SUBTYPE }, |
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{ .compatible = "qcom,pm8004", .data = (void *)PM8004_SUBTYPE }, |
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{ .compatible = "qcom,pm8909", .data = (void *)PM8909_SUBTYPE }, |
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{ .compatible = "qcom,pm8950", .data = (void *)PM8950_SUBTYPE }, |
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{ .compatible = "qcom,pmi8950", .data = (void *)PMI8950_SUBTYPE }, |
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{ .compatible = "qcom,pm8998", .data = (void *)PM8998_SUBTYPE }, |
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{ .compatible = "qcom,pmi8998", .data = (void *)PMI8998_SUBTYPE }, |
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{ .compatible = "qcom,pm8005", .data = (void *)PM8005_SUBTYPE }, |
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{ .compatible = "qcom,pm660l", .data = (void *)PM660L_SUBTYPE }, |
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{ .compatible = "qcom,pm660", .data = (void *)PM660_SUBTYPE }, |
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{ } |
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}; |
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static void pmic_spmi_show_revid(struct regmap *map, struct device *dev) |
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{ |
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unsigned int rev2, minor, major, type, subtype; |
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const char *name = "unknown"; |
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int ret, i; |
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ret = regmap_read(map, PMIC_TYPE, &type); |
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if (ret < 0) |
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return; |
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if (type != PMIC_TYPE_VALUE) |
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return; |
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ret = regmap_read(map, PMIC_SUBTYPE, &subtype); |
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if (ret < 0) |
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return; |
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for (i = 0; i < ARRAY_SIZE(pmic_spmi_id_table); i++) { |
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if (subtype == (unsigned long)pmic_spmi_id_table[i].data) |
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break; |
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} |
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if (i != ARRAY_SIZE(pmic_spmi_id_table)) |
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name = pmic_spmi_id_table[i].compatible; |
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ret = regmap_read(map, PMIC_REV2, &rev2); |
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if (ret < 0) |
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return; |
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ret = regmap_read(map, PMIC_REV3, &minor); |
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if (ret < 0) |
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return; |
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ret = regmap_read(map, PMIC_REV4, &major); |
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if (ret < 0) |
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return; |
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/* |
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* In early versions of PM8941 and PM8226, the major revision number |
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* started incrementing from 0 (eg 0 = v1.0, 1 = v2.0). |
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* Increment the major revision number here if the chip is an early |
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* version of PM8941 or PM8226. |
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*/ |
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if ((subtype == PM8941_SUBTYPE || subtype == PM8226_SUBTYPE) && |
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major < 0x02) |
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major++; |
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if (subtype == PM8110_SUBTYPE) |
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minor = rev2; |
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dev_dbg(dev, "%x: %s v%d.%d\n", subtype, name, major, minor); |
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} |
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static const struct regmap_config spmi_regmap_config = { |
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.reg_bits = 16, |
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.val_bits = 8, |
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.max_register = 0xffff, |
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.fast_io = true, |
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}; |
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static int pmic_spmi_probe(struct spmi_device *sdev) |
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{ |
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struct regmap *regmap; |
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regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config); |
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if (IS_ERR(regmap)) |
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return PTR_ERR(regmap); |
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/* Only the first slave id for a PMIC contains this information */ |
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if (sdev->usid % 2 == 0) |
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pmic_spmi_show_revid(regmap, &sdev->dev); |
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return devm_of_platform_populate(&sdev->dev); |
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} |
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MODULE_DEVICE_TABLE(of, pmic_spmi_id_table); |
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static struct spmi_driver pmic_spmi_driver = { |
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.probe = pmic_spmi_probe, |
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.driver = { |
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.name = "pmic-spmi", |
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.of_match_table = pmic_spmi_id_table, |
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}, |
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}; |
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module_spmi_driver(pmic_spmi_driver); |
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MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver"); |
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MODULE_ALIAS("spmi:spmi-pmic"); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_AUTHOR("Josh Cartwright <[email protected]>"); |
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MODULE_AUTHOR("Stanimir Varbanov <[email protected]>");
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