Add support for HiSilicon Hi6421v530 PMIC. Hi6421v530 communicates with main SoC via memory-mapped I/O. Hi6421v530 and Hi6421 are PMIC chips from the same vendor, HiSilicon, but at different revisions. They share the same memory-mapped I/O design. They differ in regulator details, eg. LDO voltage points. Signed-off-by: Guodong Xu <guodong.xu@xxxxxxxxxx> Signed-off-by: Wang Xiaoyin <hw.wangxiaoyin@xxxxxxxxxxxxx> --- drivers/mfd/Kconfig | 9 +++++ drivers/mfd/Makefile | 1 + drivers/mfd/hi6421v530-pmic.c | 92 +++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 102 insertions(+) create mode 100644 drivers/mfd/hi6421v530-pmic.c diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 3eb5c93..bdc8304 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -388,6 +388,15 @@ config MFD_HI6421_PMIC menus in order to enable them. We communicate with the Hi6421 via memory-mapped I/O. +config MFD_HI6421V530_PMIC + tristate "HiSilicon Hi6421v530 PMU/Codec IC" + depends on OF + select MFD_CORE + select REGMAP_MMIO + help + Add support for HiSilicon Hi6421v530 PMIC. Hi6421v530 communicates + with main SoC via memory-mapped I/O. + 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 c16bf1e..cde62fc 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -206,6 +206,7 @@ obj-$(CONFIG_MFD_STW481X) += stw481x.o obj-$(CONFIG_MFD_IPAQ_MICRO) += ipaq-micro.o obj-$(CONFIG_MFD_MENF21BMC) += menf21bmc.o obj-$(CONFIG_MFD_HI6421_PMIC) += hi6421-pmic-core.o +obj-$(CONFIG_MFD_HI6421V530_PMIC) += hi6421v530-pmic.o obj-$(CONFIG_MFD_HI655X_PMIC) += hi655x-pmic.o obj-$(CONFIG_MFD_DLN2) += dln2.o obj-$(CONFIG_MFD_RT5033) += rt5033.o diff --git a/drivers/mfd/hi6421v530-pmic.c b/drivers/mfd/hi6421v530-pmic.c new file mode 100644 index 0000000..651659a --- /dev/null +++ b/drivers/mfd/hi6421v530-pmic.c @@ -0,0 +1,92 @@ +/* + * Device driver for Hi6421 IC + * + * Copyright (c) <2017> HiSilicon Technologies Co., Ltd. + * http://www.hisilicon.com + * Copyright (c) <2017> Linaro Ltd. + * http://www.linaro.org + * + * Author: Wang Xiaoyin <hw.wangxiaoyin@xxxxxxxxxxxxx> + * Guodong Xu <guodong.xu@xxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/device.h> +#include <linux/err.h> +#include <linux/mfd/core.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/mfd/hi6421-pmic.h> + +static const struct mfd_cell hi6421v530_devs[] = { + { .name = "hi6421v530-regulator", }, +}; + +static int hi6421v530_pmic_probe(struct platform_device *pdev) +{ + struct hi6421_pmic *pmic; + struct resource *res; + void __iomem *base; + int ret; + + pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL); + if (!pmic) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + pmic->regmap = devm_regmap_init_mmio_clk(&pdev->dev, NULL, base, + &hi6421_regmap_config); + if (IS_ERR(pmic->regmap)) { + dev_err(&pdev->dev, + "regmap init failed: %ld\n", PTR_ERR(pmic->regmap)); + return PTR_ERR(pmic->regmap); + } + + platform_set_drvdata(pdev, pmic); + + ret = devm_mfd_add_devices(&pdev->dev, 0, hi6421v530_devs, + ARRAY_SIZE(hi6421v530_devs), NULL, 0, NULL); + if (ret) { + dev_err(&pdev->dev, "add mfd devices failed: %d\n", ret); + return ret; + } + + return 0; +} + +static const struct of_device_id of_hi6421v530_pmic_match_tbl[] = { + { .compatible = "hisilicon,hi6421v530-pmic", }, + { }, +}; +MODULE_DEVICE_TABLE(of, of_hi6421v530_pmic_match_tbl); + +static struct platform_driver hi6421v530_pmic_driver = { + .driver = { + .name = "hi6421v530_pmic", + .of_match_table = of_hi6421v530_pmic_match_tbl, + }, + .probe = hi6421v530_pmic_probe, +}; +module_platform_driver(hi6421v530_pmic_driver); + +MODULE_AUTHOR("Guodong Xu <guodong.xu@xxxxxxxxxx>"); +MODULE_DESCRIPTION("Hi6421v530 PMIC driver"); +MODULE_LICENSE("GPL v2"); -- 2.10.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
