1 // SPDX-License-Identifier: GPL-2.0-only
3  * Device driver for Hi6421 PMIC
5  * Copyright (c) <2011-2014> HiSilicon Technologies Co., Ltd.
7  * Copyright (c) <2013-2017> Linaro Ltd.
16 #include <linux/mfd/hi6421-pmic.h>
23 	{ .name = "hi6421-regulator", },
27 	{ .name = "hi6421v530-regulator", },
39 		.compatible = "hisilicon,hi6421-pmic",
43 		.compatible = "hisilicon,hi6421v530-pmic",
52 	struct hi6421_pmic *pmic;  in hi6421_pmic_probe()  local
54 	const struct of_device_id *id;  in hi6421_pmic_probe()  local
60 	id = of_match_device(of_hi6421_pmic_match, &pdev->dev);  in hi6421_pmic_probe()
61 	if (!id)  in hi6421_pmic_probe()
62 		return -EINVAL;  in hi6421_pmic_probe()
63 	type = (enum hi6421_type)id->data;  in hi6421_pmic_probe()
65 	pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);  in hi6421_pmic_probe()
66 	if (!pmic)  in hi6421_pmic_probe()
67 		return -ENOMEM;  in hi6421_pmic_probe()
70 	base = devm_ioremap_resource(&pdev->dev, res);  in hi6421_pmic_probe()
74 	pmic->regmap = devm_regmap_init_mmio_clk(&pdev->dev, NULL, base,  in hi6421_pmic_probe()
76 	if (IS_ERR(pmic->regmap)) {  in hi6421_pmic_probe()
77 		dev_err(&pdev->dev, "Failed to initialise Regmap: %ld\n",  in hi6421_pmic_probe()
78 						PTR_ERR(pmic->regmap));  in hi6421_pmic_probe()
79 		return PTR_ERR(pmic->regmap);  in hi6421_pmic_probe()
82 	platform_set_drvdata(pdev, pmic);  in hi6421_pmic_probe()
86 		/* set over-current protection debounce 8ms */  in hi6421_pmic_probe()
87 		regmap_update_bits(pmic->regmap, HI6421_OCP_DEB_CTRL_REG,  in hi6421_pmic_probe()
102 		dev_err(&pdev->dev, "Unknown device type %d\n",  in hi6421_pmic_probe()
104 		return -EINVAL;  in hi6421_pmic_probe()
107 	ret = devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE,  in hi6421_pmic_probe()
110 		dev_err(&pdev->dev, "Failed to add child devices: %d\n", ret);  in hi6421_pmic_probe()
127 MODULE_DESCRIPTION("Hi6421 PMIC driver");