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Viewing File: /usr/src/kernels/5.14.0-570.32.1.el9_6.x86_64/include/linux/mfd/gsc.h
/* SPDX-License-Identifier: GPL-2.0
*
* Copyright (C) 2020 Gateworks Corporation
*/
#ifndef __LINUX_MFD_GSC_H_
#define __LINUX_MFD_GSC_H_
#include <linux/regmap.h>
/* Device Addresses */
#define GSC_MISC 0x20
#define GSC_UPDATE 0x21
#define GSC_GPIO 0x23
#define GSC_HWMON 0x29
#define GSC_EEPROM0 0x50
#define GSC_EEPROM1 0x51
#define GSC_EEPROM2 0x52
#define GSC_EEPROM3 0x53
#define GSC_RTC 0x68
/* Register offsets */
enum {
GSC_CTRL_0 = 0x00,
GSC_CTRL_1 = 0x01,
GSC_TIME = 0x02,
GSC_TIME_ADD = 0x06,
GSC_IRQ_STATUS = 0x0A,
GSC_IRQ_ENABLE = 0x0B,
GSC_FW_CRC = 0x0C,
GSC_FW_VER = 0x0E,
GSC_WP = 0x0F,
};
/* Bit definitions */
#define GSC_CTRL_0_PB_HARD_RESET 0
#define GSC_CTRL_0_PB_CLEAR_SECURE_KEY 1
#define GSC_CTRL_0_PB_SOFT_POWER_DOWN 2
#define GSC_CTRL_0_PB_BOOT_ALTERNATE 3
#define GSC_CTRL_0_PERFORM_CRC 4
#define GSC_CTRL_0_TAMPER_DETECT 5
#define GSC_CTRL_0_SWITCH_HOLD 6
#define GSC_CTRL_1_SLEEP_ENABLE 0
#define GSC_CTRL_1_SLEEP_ACTIVATE 1
#define GSC_CTRL_1_SLEEP_ADD 2
#define GSC_CTRL_1_SLEEP_NOWAKEPB 3
#define GSC_CTRL_1_WDT_TIME 4
#define GSC_CTRL_1_WDT_ENABLE 5
#define GSC_CTRL_1_SWITCH_BOOT_ENABLE 6
#define GSC_CTRL_1_SWITCH_BOOT_CLEAR 7
#define GSC_IRQ_PB 0
#define GSC_IRQ_KEY_ERASED 1
#define GSC_IRQ_EEPROM_WP 2
#define GSC_IRQ_RESV 3
#define GSC_IRQ_GPIO 4
#define GSC_IRQ_TAMPER 5
#define GSC_IRQ_WDT_TIMEOUT 6
#define GSC_IRQ_SWITCH_HOLD 7
int gsc_read(void *context, unsigned int reg, unsigned int *val);
int gsc_write(void *context, unsigned int reg, unsigned int val);
struct gsc_dev {
struct device *dev;
struct i2c_client *i2c; /* 0x20: interrupt controller, WDT */
struct i2c_client *i2c_hwmon; /* 0x29: hwmon, fan controller */
struct regmap *regmap;
unsigned int fwver;
unsigned short fwcrc;
};
#endif /* __LINUX_MFD_GSC_H_ */
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