diff options
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/Kconfig | 16 | ||||
| -rw-r--r-- | drivers/mfd/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mfd/hi6421-spmi-pmic.c | 72 |
3 files changed, 89 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 6a3fd2d75f96..01bb42f0ca0b 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -510,6 +510,22 @@ config MFD_HI6421_PMIC menus in order to enable them. We communicate with the Hi6421 via memory-mapped I/O. +config MFD_HI6421_SPMI + tristate "HiSilicon Hi6421v600 SPMI PMU/Codec IC" + depends on OF + depends on SPMI + select MFD_CORE + select REGMAP_SPMI + help + Add support for HiSilicon Hi6421v600 SPMI PMIC. Hi6421 includes + multi-functions, such as regulators, RTC, codec, Coulomb counter, + etc. + + This driver includes core APIs _only_. You have to select + individual components like voltage regulators under corresponding + menus in order to enable them. + We communicate with the Hi6421v600 via a SPMI bus. + config MFD_HI655X_PMIC tristate "HiSilicon Hi655X series PMU/Codec IC" depends on ARCH_HISI || COMPILE_TEST diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index 8116c19d5fd4..570b9ffb34d0 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -231,6 +231,7 @@ obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o obj-$(CONFIG_MFD_IQS62X) += iqs62x.o obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o +obj-$(CONFIG_MFD_HI6421_SPMI) += hi6421-spmi-pmic.o obj-$(CONFIG_MFD_HI655X_PMIC) += hi655x-pmic.o obj-$(CONFIG_MFD_DLN2) += dln2.o obj-$(CONFIG_MFD_RT4831) += rt4831.o diff --git a/drivers/mfd/hi6421-spmi-pmic.c b/drivers/mfd/hi6421-spmi-pmic.c new file mode 100644 index 000000000000..4f136826681b --- /dev/null +++ b/drivers/mfd/hi6421-spmi-pmic.c @@ -0,0 +1,72 @@ +// 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/mfd/hi6421-spmi-pmic.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; + int ret; + struct hi6421_spmi_pmic *ddata; + ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + ddata->regmap = devm_regmap_init_spmi_ext(sdev, ®map_config); + if (IS_ERR(ddata->regmap)) + return PTR_ERR(ddata->regmap); + + ddata->dev = dev; + + dev_set_drvdata(&sdev->dev, ddata); + + 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"); |