--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Definitions for talking to the PMU. The PMU is a microcontroller
+ * which controls battery charging and system power on PowerBook 3400
+ * and 2400 models as well as the RTC and various other things.
+ *
+ * Copyright (C) 1998 Paul Mackerras.
+ */
+
+#ifndef _LINUX_PMU_H
+#define _LINUX_PMU_H
+
+#define PMU_DRIVER_VERSION 2
+
+/*
+ * PMU commands
+ */
+#define PMU_POWER_CTRL0 0x10 /* control power of some devices */
+#define PMU_POWER_CTRL 0x11 /* control power of some devices */
+#define PMU_ADB_CMD 0x20 /* send ADB packet */
+#define PMU_ADB_POLL_OFF 0x21 /* disable ADB auto-poll */
+#define PMU_WRITE_NVRAM 0x33 /* write non-volatile RAM */
+#define PMU_READ_NVRAM 0x3b /* read non-volatile RAM */
+#define PMU_SET_RTC 0x30 /* set real-time clock */
+#define PMU_READ_RTC 0x38 /* read real-time clock */
+#define PMU_SET_VOLBUTTON 0x40 /* set volume up/down position */
+#define PMU_BACKLIGHT_BRIGHT 0x41 /* set backlight brightness */
+#define PMU_GET_VOLBUTTON 0x48 /* get volume up/down position */
+#define PMU_PCEJECT 0x4c /* eject PC-card from slot */
+#define PMU_BATTERY_STATE 0x6b /* report battery state etc. */
+#define PMU_SMART_BATTERY_STATE 0x6f /* report battery state (new way) */
+#define PMU_SET_INTR_MASK 0x70 /* set PMU interrupt mask */
+#define PMU_INT_ACK 0x78 /* read interrupt bits */
+#define PMU_SHUTDOWN 0x7e /* turn power off */
+#define PMU_CPU_SPEED 0x7d /* control CPU speed on some models */
+#define PMU_SLEEP 0x7f /* put CPU to sleep */
+#define PMU_POWER_EVENTS 0x8f /* Send power-event commands to PMU */
+#define PMU_I2C_CMD 0x9a /* I2C operations */
+#define PMU_RESET 0xd0 /* reset CPU */
+#define PMU_GET_BRIGHTBUTTON 0xd9 /* report brightness up/down pos */
+#define PMU_GET_COVER 0xdc /* report cover open/closed */
+#define PMU_SYSTEM_READY 0xdf /* tell PMU we are awake */
+#define PMU_GET_VERSION 0xea /* read the PMU version */
+
+/* Bits to use with the PMU_POWER_CTRL0 command */
+#define PMU_POW0_ON 0x80 /* OR this to power ON the device */
+#define PMU_POW0_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
+#define PMU_POW0_HARD_DRIVE 0x04 /* Hard drive power (on wallstreet/lombard ?) */
+
+/* Bits to use with the PMU_POWER_CTRL command */
+#define PMU_POW_ON 0x80 /* OR this to power ON the device */
+#define PMU_POW_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
+#define PMU_POW_BACKLIGHT 0x01 /* backlight power */
+#define PMU_POW_CHARGER 0x02 /* battery charger power */
+#define PMU_POW_IRLED 0x04 /* IR led power (on wallstreet) */
+#define PMU_POW_MEDIABAY 0x08 /* media bay power (wallstreet/lombard ?) */
+
+/* Bits in PMU interrupt and interrupt mask bytes */
+#define PMU_INT_PCEJECT 0x04 /* PC-card eject buttons */
+#define PMU_INT_SNDBRT 0x08 /* sound/brightness up/down buttons */
+#define PMU_INT_ADB 0x10 /* ADB autopoll or reply data */
+#define PMU_INT_BATTERY 0x20 /* Battery state change */
+#define PMU_INT_ENVIRONMENT 0x40 /* Environment interrupts */
+#define PMU_INT_TICK 0x80 /* 1-second tick interrupt */
+
+/* Other bits in PMU interrupt valid when PMU_INT_ADB is set */
+#define PMU_INT_ADB_AUTO 0x04 /* ADB autopoll, when PMU_INT_ADB */
+#define PMU_INT_WAITING_CHARGER 0x01 /* ??? */
+#define PMU_INT_AUTO_SRQ_POLL 0x02 /* ??? */
+
+/* Bits in the environement message (either obtained via PMU_GET_COVER,
+ * or via PMU_INT_ENVIRONMENT on core99 */
+#define PMU_ENV_LID_CLOSED 0x01 /* The lid is closed */
+
+/* I2C related definitions */
+#define PMU_I2C_MODE_SIMPLE 0
+#define PMU_I2C_MODE_STDSUB 1
+#define PMU_I2C_MODE_COMBINED 2
+
+#define PMU_I2C_BUS_STATUS 0
+#define PMU_I2C_BUS_SYSCLK 1
+#define PMU_I2C_BUS_POWER 2
+
+#define PMU_I2C_STATUS_OK 0
+#define PMU_I2C_STATUS_DATAREAD 1
+#define PMU_I2C_STATUS_BUSY 0xfe
+
+
+/* Kind of PMU (model) */
+enum {
+ PMU_UNKNOWN,
+ PMU_OHARE_BASED, /* 2400, 3400, 3500 (old G3 powerbook) */
+ PMU_HEATHROW_BASED, /* PowerBook G3 series */
+ PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */
+ PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */
+ PMU_68K_V1, /* Unused/deprecated */
+ PMU_68K_V2, /* Unused/deprecated */
+};
+
+/* PMU PMU_POWER_EVENTS commands */
+enum {
+ PMU_PWR_GET_POWERUP_EVENTS = 0x00,
+ PMU_PWR_SET_POWERUP_EVENTS = 0x01,
+ PMU_PWR_CLR_POWERUP_EVENTS = 0x02,
+ PMU_PWR_GET_WAKEUP_EVENTS = 0x03,
+ PMU_PWR_SET_WAKEUP_EVENTS = 0x04,
+ PMU_PWR_CLR_WAKEUP_EVENTS = 0x05,
+};
+
+/* Power events wakeup bits */
+enum {
+ PMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */
+ PMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */
+ PMU_PWR_WAKEUP_AC_CHANGE = 0x04,
+ PMU_PWR_WAKEUP_LID_OPEN = 0x08,
+ PMU_PWR_WAKEUP_RING = 0x10,
+};
+
+/*
+ * Ioctl commands for the /dev/pmu device
+ */
+#include <linux/ioctl.h>
+
+/* no param */
+#define PMU_IOC_SLEEP _IO('B', 0)
+/* out param: u32* backlight value: 0 to 15 */
+#define PMU_IOC_GET_BACKLIGHT _IOR('B', 1, size_t)
+/* in param: u32 backlight value: 0 to 15 */
+#define PMU_IOC_SET_BACKLIGHT _IOW('B', 2, size_t)
+/* out param: u32* PMU model */
+#define PMU_IOC_GET_MODEL _IOR('B', 3, size_t)
+/* out param: u32* has_adb: 0 or 1 */
+#define PMU_IOC_HAS_ADB _IOR('B', 4, size_t)
+/* out param: u32* can_sleep: 0 or 1 */
+#define PMU_IOC_CAN_SLEEP _IOR('B', 5, size_t)
+/* no param, but historically was _IOR('B', 6, 0), meaning 4 bytes */
+#define PMU_IOC_GRAB_BACKLIGHT _IOR('B', 6, size_t)
+
+
+#endif /* _LINUX_PMU_H */
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