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