From 8bdf87b400271ebc7fbf71e117c299d19a97ebb4 Mon Sep 17 00:00:00 2001 From: Guodong Xu Date: Mon, 1 Sep 2014 16:28:34 +0800 Subject: mfd: Add HI6421 PMIC Core driver This adds driver to support HiSilicon Hi6421 PMIC. Hi6421 includes multi- functions, such as regulators, codec, ADCs, Coulomb counter, etc. This driver includes core APIs _only_. Drivers for individul components, like voltage regulators, are implemented in corresponding driver directories and files. Registers in Hi6421 are memory mapped, so using regmap-mmio API. Signed-off-by: Guodong Xu Signed-off-by: Lee Jones --- include/linux/mfd/hi6421-pmic.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 include/linux/mfd/hi6421-pmic.h (limited to 'include/linux') diff --git a/include/linux/mfd/hi6421-pmic.h b/include/linux/mfd/hi6421-pmic.h new file mode 100644 index 000000000000..587273e35acf --- /dev/null +++ b/include/linux/mfd/hi6421-pmic.h @@ -0,0 +1,41 @@ +/* + * Header file for device driver Hi6421 PMIC + * + * Copyright (c) <2011-2014> HiSilicon Technologies Co., Ltd. + * http://www.hisilicon.com + * Copyright (c) <2013-2014> Linaro Ltd. + * http://www.linaro.org + * + * Author: Guodong Xu + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __HI6421_PMIC_H +#define __HI6421_PMIC_H + +/* Hi6421 registers are mapped to memory bus in 4 bytes stride */ +#define HI6421_REG_TO_BUS_ADDR(x) (x << 2) + +/* Hi6421 maximum register number */ +#define HI6421_REG_MAX 0xFF + +/* Hi6421 OCP (over current protection) and DEB (debounce) control register */ +#define HI6421_OCP_DEB_CTRL_REG HI6421_REG_TO_BUS_ADDR(0x51) +#define HI6421_OCP_DEB_SEL_MASK 0x0C +#define HI6421_OCP_DEB_SEL_8MS 0x00 +#define HI6421_OCP_DEB_SEL_16MS 0x04 +#define HI6421_OCP_DEB_SEL_32MS 0x08 +#define HI6421_OCP_DEB_SEL_64MS 0x0C +#define HI6421_OCP_EN_DEBOUNCE_MASK 0x02 +#define HI6421_OCP_EN_DEBOUNCE_ENABLE 0x02 +#define HI6421_OCP_AUTO_STOP_MASK 0x01 +#define HI6421_OCP_AUTO_STOP_ENABLE 0x01 + +struct hi6421_pmic { + struct regmap *regmap; +}; + +#endif /* __HI6421_PMIC_H */ -- cgit v1.2.3