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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Intel MAX 10 Board Management Controller chip.
*
* Copyright (C) 2018-2020 Intel Corporation, Inc.
*/
#ifndef __MFD_INTEL_M10_BMC_H
#define __MFD_INTEL_M10_BMC_H
#include <linux/regmap.h>
#define M10BMC_LEGACY_SYS_BASE 0x300400
#define M10BMC_SYS_BASE 0x300800
#define M10BMC_MEM_END 0x200000fc
/* Register offset of system registers */
#define NIOS2_FW_VERSION 0x0
#define M10BMC_TEST_REG 0x3c
#define M10BMC_BUILD_VER 0x68
#define M10BMC_VER_MAJOR_MSK GENMASK(23, 16)
#define M10BMC_VER_PCB_INFO_MSK GENMASK(31, 24)
#define M10BMC_VER_LEGACY_INVALID 0xffffffff
/**
* struct intel_m10bmc - Intel MAX 10 BMC parent driver data structure
* @dev: this device
* @regmap: the regmap used to access registers by m10bmc itself
*/
struct intel_m10bmc {
struct device *dev;
struct regmap *regmap;
};
/*
* register access helper functions.
*
* m10bmc_raw_read - read m10bmc register per addr
* m10bmc_sys_read - read m10bmc system register per offset
*/
static inline int
m10bmc_raw_read(struct intel_m10bmc *m10bmc, unsigned int addr,
unsigned int *val)
{
int ret;
ret = regmap_read(m10bmc->regmap, addr, val);
if (ret)
dev_err(m10bmc->dev, "fail to read raw reg %x: %d\n",
addr, ret);
return ret;
}
/*
* The base of the system registers could be configured by HW developers, and
* in HW SPEC, the base is not added to the addresses of the system registers.
*
* This macro helps to simplify the accessing of the system registers. And if
* the base is reconfigured in HW, SW developers could simply change the
* M10BMC_SYS_BASE accordingly.
*/
#define m10bmc_sys_read(m10bmc, offset, val) \
m10bmc_raw_read(m10bmc, M10BMC_SYS_BASE + (offset), val)
#endif /* __MFD_INTEL_M10_BMC_H */
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