Commit 538ee272 authored by Andrey Smirnov's avatar Andrey Smirnov Committed by Lee Jones

mfd: Add driver for RAVE Supervisory Processor

Add a driver for RAVE Supervisory Processor, an MCU implementing
various bits of housekeeping functionality (watchdoging, backlight
control, LED control, etc) on RAVE family of products by Zodiac
Inflight Innovations.

This driver implementes core MFD/serdev device as well as
communication subroutines necessary for commanding the device.
Signed-off-by: default avatarAndrey Smirnov <andrew.smirnov@gmail.com>
Acked-by: default avatarPhilippe Ombredanne <pombredanne@nexb.com>
Acked-by: default avatarPavel Machek <pavel@ucw.cz>
Reviewed-by: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Tested-by: default avatarChris Healy <cphealy@gmail.com>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 2cb67d20
...@@ -1859,5 +1859,13 @@ config MFD_VEXPRESS_SYSREG ...@@ -1859,5 +1859,13 @@ config MFD_VEXPRESS_SYSREG
System Registers are the platform configuration block System Registers are the platform configuration block
on the ARM Ltd. Versatile Express board. on the ARM Ltd. Versatile Express board.
config RAVE_SP_CORE
tristate "RAVE SP MCU core driver"
depends on SERIAL_DEV_BUS
select CRC_CCITT
help
Select this to get support for the Supervisory Processor
device found on several devices in RAVE line of hardware.
endmenu endmenu
endif endif
...@@ -230,3 +230,5 @@ obj-$(CONFIG_MFD_STM32_LPTIMER) += stm32-lptimer.o ...@@ -230,3 +230,5 @@ obj-$(CONFIG_MFD_STM32_LPTIMER) += stm32-lptimer.o
obj-$(CONFIG_MFD_STM32_TIMERS) += stm32-timers.o obj-$(CONFIG_MFD_STM32_TIMERS) += stm32-timers.o
obj-$(CONFIG_MFD_MXS_LRADC) += mxs-lradc.o obj-$(CONFIG_MFD_MXS_LRADC) += mxs-lradc.o
obj-$(CONFIG_MFD_SC27XX_PMIC) += sprd-sc27xx-spi.o obj-$(CONFIG_MFD_SC27XX_PMIC) += sprd-sc27xx-spi.o
obj-$(CONFIG_RAVE_SP_CORE) += rave-sp.o
This diff is collapsed.
/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Core definitions for RAVE SP MFD driver.
*
* Copyright (C) 2017 Zodiac Inflight Innovations
*/
#ifndef _LINUX_RAVE_SP_H_
#define _LINUX_RAVE_SP_H_
#include <linux/notifier.h>
enum rave_sp_command {
RAVE_SP_CMD_GET_FIRMWARE_VERSION = 0x20,
RAVE_SP_CMD_GET_BOOTLOADER_VERSION = 0x21,
RAVE_SP_CMD_BOOT_SOURCE = 0x26,
RAVE_SP_CMD_GET_BOARD_COPPER_REV = 0x2B,
RAVE_SP_CMD_GET_GPIO_STATE = 0x2F,
RAVE_SP_CMD_STATUS = 0xA0,
RAVE_SP_CMD_SW_WDT = 0xA1,
RAVE_SP_CMD_PET_WDT = 0xA2,
RAVE_SP_CMD_RESET = 0xA7,
RAVE_SP_CMD_RESET_REASON = 0xA8,
RAVE_SP_CMD_REQ_COPPER_REV = 0xB6,
RAVE_SP_CMD_GET_I2C_DEVICE_STATUS = 0xBA,
RAVE_SP_CMD_GET_SP_SILICON_REV = 0xB9,
RAVE_SP_CMD_CONTROL_EVENTS = 0xBB,
RAVE_SP_EVNT_BASE = 0xE0,
};
struct rave_sp;
static inline unsigned long rave_sp_action_pack(u8 event, u8 value)
{
return ((unsigned long)value << 8) | event;
}
static inline u8 rave_sp_action_unpack_event(unsigned long action)
{
return action;
}
static inline u8 rave_sp_action_unpack_value(unsigned long action)
{
return action >> 8;
}
int rave_sp_exec(struct rave_sp *sp,
void *__data, size_t data_size,
void *reply_data, size_t reply_data_size);
struct device;
int devm_rave_sp_register_event_notifier(struct device *dev,
struct notifier_block *nb);
#endif /* _LINUX_RAVE_SP_H_ */
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