83 lines
1.9 KiB
C
83 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2019 MediaTek Inc.
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* Author: Argus Lin <argus.lin@mediatek.com>
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*/
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#include <linux/kernel.h>
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#include <linux/mfd/mt6315/registers.h>
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#include <linux/module.h>
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#include <linux/of_platform.h>
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#include <linux/pmif.h>
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#include <linux/regmap.h>
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#include <linux/spmi.h>
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#define PMIC_VER 0x1510
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#define COMMON_SUBTYPE 0x00
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static const struct of_device_id pmic_spmi_id_table[] = {
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{ .compatible = "mtk,spmi-pmic", .data = (void *)COMMON_SUBTYPE },
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{ .compatible = "mediatek,mt6315", .data = (void *)COMMON_SUBTYPE },
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{ }
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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 = 0x16d0,
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.fast_io = true,
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};
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static const struct regmap_config spmi_regmap_config_V2 = {
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.reg_bits = 16,
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.val_bits = 8,
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.max_register = 0x2000,
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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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/* Only the first slave id for a PMIC contains this information */
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switch (sdev->usid) {
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case 3:
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case 6:
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case 7:
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pr_notice("%s MT6315 usid:%d\n", __func__, sdev->usid);
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regmap = devm_regmap_init_spmi_ext(sdev,
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&spmi_regmap_config);
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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break;
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case 9:
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pr_notice("%s MT6362 usid:%d\n", __func__, sdev->usid);
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regmap = devm_regmap_init_spmi_ext(sdev,
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&spmi_regmap_config_V2);
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if (IS_ERR(regmap))
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return PTR_ERR(regmap);
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break;
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case 8:
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default:
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pr_notice("%s unknown usid:%d\n", __func__, sdev->usid);
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break;
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}
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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("Mediatek 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("Argus Lin <argus.lin@mediatek.com>");
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