19bd9e0deSMauro Carvalho Chehab // SPDX-License-Identifier: GPL-2.0
29bd9e0deSMauro Carvalho Chehab /*
39bd9e0deSMauro Carvalho Chehab * Device driver for regulators in HISI PMIC IC
49bd9e0deSMauro Carvalho Chehab *
59bd9e0deSMauro Carvalho Chehab * Copyright (c) 2013 Linaro Ltd.
69bd9e0deSMauro Carvalho Chehab * Copyright (c) 2011 Hisilicon.
79bd9e0deSMauro Carvalho Chehab * Copyright (c) 2020-2021 Huawei Technologies Co., Ltd.
89bd9e0deSMauro Carvalho Chehab */
99bd9e0deSMauro Carvalho Chehab
109bd9e0deSMauro Carvalho Chehab #include <linux/mfd/core.h>
119bd9e0deSMauro Carvalho Chehab #include <linux/module.h>
129bd9e0deSMauro Carvalho Chehab #include <linux/platform_device.h>
139bd9e0deSMauro Carvalho Chehab #include <linux/regmap.h>
149bd9e0deSMauro Carvalho Chehab #include <linux/slab.h>
159bd9e0deSMauro Carvalho Chehab #include <linux/spmi.h>
169bd9e0deSMauro Carvalho Chehab
179bd9e0deSMauro Carvalho Chehab static const struct mfd_cell hi6421v600_devs[] = {
189bd9e0deSMauro Carvalho Chehab { .name = "hi6421v600-irq", },
199bd9e0deSMauro Carvalho Chehab { .name = "hi6421v600-regulator", },
209bd9e0deSMauro Carvalho Chehab };
219bd9e0deSMauro Carvalho Chehab
229bd9e0deSMauro Carvalho Chehab static const struct regmap_config regmap_config = {
239bd9e0deSMauro Carvalho Chehab .reg_bits = 16,
249bd9e0deSMauro Carvalho Chehab .val_bits = BITS_PER_BYTE,
259bd9e0deSMauro Carvalho Chehab .max_register = 0xffff,
269bd9e0deSMauro Carvalho Chehab .fast_io = true
279bd9e0deSMauro Carvalho Chehab };
289bd9e0deSMauro Carvalho Chehab
hi6421_spmi_pmic_probe(struct spmi_device * sdev)299bd9e0deSMauro Carvalho Chehab static int hi6421_spmi_pmic_probe(struct spmi_device *sdev)
309bd9e0deSMauro Carvalho Chehab {
319bd9e0deSMauro Carvalho Chehab struct device *dev = &sdev->dev;
32*e68ce0faSMauro Carvalho Chehab struct regmap *regmap;
339bd9e0deSMauro Carvalho Chehab int ret;
349bd9e0deSMauro Carvalho Chehab
35*e68ce0faSMauro Carvalho Chehab regmap = devm_regmap_init_spmi_ext(sdev, ®map_config);
36*e68ce0faSMauro Carvalho Chehab if (IS_ERR(regmap))
37*e68ce0faSMauro Carvalho Chehab return PTR_ERR(regmap);
389bd9e0deSMauro Carvalho Chehab
39*e68ce0faSMauro Carvalho Chehab dev_set_drvdata(&sdev->dev, regmap);
409bd9e0deSMauro Carvalho Chehab
419bd9e0deSMauro Carvalho Chehab ret = devm_mfd_add_devices(&sdev->dev, PLATFORM_DEVID_NONE,
429bd9e0deSMauro Carvalho Chehab hi6421v600_devs, ARRAY_SIZE(hi6421v600_devs),
439bd9e0deSMauro Carvalho Chehab NULL, 0, NULL);
449bd9e0deSMauro Carvalho Chehab if (ret < 0)
459bd9e0deSMauro Carvalho Chehab dev_err(dev, "Failed to add child devices: %d\n", ret);
469bd9e0deSMauro Carvalho Chehab
479bd9e0deSMauro Carvalho Chehab return ret;
489bd9e0deSMauro Carvalho Chehab }
499bd9e0deSMauro Carvalho Chehab
509bd9e0deSMauro Carvalho Chehab static const struct of_device_id pmic_spmi_id_table[] = {
519bd9e0deSMauro Carvalho Chehab { .compatible = "hisilicon,hi6421-spmi" },
529bd9e0deSMauro Carvalho Chehab { }
539bd9e0deSMauro Carvalho Chehab };
549bd9e0deSMauro Carvalho Chehab MODULE_DEVICE_TABLE(of, pmic_spmi_id_table);
559bd9e0deSMauro Carvalho Chehab
569bd9e0deSMauro Carvalho Chehab static struct spmi_driver hi6421_spmi_pmic_driver = {
579bd9e0deSMauro Carvalho Chehab .driver = {
589bd9e0deSMauro Carvalho Chehab .name = "hi6421-spmi-pmic",
599bd9e0deSMauro Carvalho Chehab .of_match_table = pmic_spmi_id_table,
609bd9e0deSMauro Carvalho Chehab },
619bd9e0deSMauro Carvalho Chehab .probe = hi6421_spmi_pmic_probe,
629bd9e0deSMauro Carvalho Chehab };
639bd9e0deSMauro Carvalho Chehab module_spmi_driver(hi6421_spmi_pmic_driver);
649bd9e0deSMauro Carvalho Chehab
659bd9e0deSMauro Carvalho Chehab MODULE_DESCRIPTION("HiSilicon Hi6421v600 SPMI PMIC driver");
669bd9e0deSMauro Carvalho Chehab MODULE_LICENSE("GPL v2");
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