diff options
Diffstat (limited to 'drivers/mfd/hi6421-spmi-pmic.c')
| -rw-r--r-- | drivers/mfd/hi6421-spmi-pmic.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/mfd/hi6421-spmi-pmic.c b/drivers/mfd/hi6421-spmi-pmic.c new file mode 100644 index 0000000000..c9c0c3d701 --- /dev/null +++ b/drivers/mfd/hi6421-spmi-pmic.c @@ -0,0 +1,66 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Device driver for regulators in HISI PMIC IC + * + * Copyright (c) 2013 Linaro Ltd. + * Copyright (c) 2011 Hisilicon. + * Copyright (c) 2020-2021 Huawei Technologies Co., Ltd. + */ + +#include <linux/mfd/core.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/spmi.h> + +static const struct mfd_cell hi6421v600_devs[] = { + { .name = "hi6421v600-irq", }, + { .name = "hi6421v600-regulator", }, +}; + +static const struct regmap_config regmap_config = { + .reg_bits = 16, + .val_bits = BITS_PER_BYTE, + .max_register = 0xffff, + .fast_io = true +}; + +static int hi6421_spmi_pmic_probe(struct spmi_device *sdev) +{ + struct device *dev = &sdev->dev; + struct regmap *regmap; + int ret; + + regmap = devm_regmap_init_spmi_ext(sdev, ®map_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + dev_set_drvdata(&sdev->dev, regmap); + + ret = devm_mfd_add_devices(&sdev->dev, PLATFORM_DEVID_NONE, + hi6421v600_devs, ARRAY_SIZE(hi6421v600_devs), + NULL, 0, NULL); + if (ret < 0) + dev_err(dev, "Failed to add child devices: %d\n", ret); + + return ret; +} + +static const struct of_device_id pmic_spmi_id_table[] = { + { .compatible = "hisilicon,hi6421-spmi" }, + { } +}; +MODULE_DEVICE_TABLE(of, pmic_spmi_id_table); + +static struct spmi_driver hi6421_spmi_pmic_driver = { + .driver = { + .name = "hi6421-spmi-pmic", + .of_match_table = pmic_spmi_id_table, + }, + .probe = hi6421_spmi_pmic_probe, +}; +module_spmi_driver(hi6421_spmi_pmic_driver); + +MODULE_DESCRIPTION("HiSilicon Hi6421v600 SPMI PMIC driver"); +MODULE_LICENSE("GPL v2"); |