238 lines
9.7 KiB
C
238 lines
9.7 KiB
C
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/*
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* Definitions for talking to the PMU. The PMU is a microcontroller
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* which controls battery charging and system power on PowerBook 3400
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* and 2400 models as well as the RTC and various other things.
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*
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* Copyright (C) 1998 Paul Mackerras.
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* Copyright (C) 2016 Ben Herrenschmidt
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*/
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#ifndef PMU_H
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#define PMU_H
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/*
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* PMU commands
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*/
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#define PMU_POWER_CTRL0 0x10 /* control power of some devices */
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#define PMU_POWER_CTRL 0x11 /* control power of some devices */
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#define PMU_ADB_CMD 0x20 /* send ADB packet */
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#define PMU_ADB_POLL_OFF 0x21 /* disable ADB auto-poll */
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#define PMU_WRITE_NVRAM 0x33 /* write non-volatile RAM */
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#define PMU_READ_NVRAM 0x3b /* read non-volatile RAM */
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#define PMU_SET_RTC 0x30 /* set real-time clock */
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#define PMU_READ_RTC 0x38 /* read real-time clock */
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#define PMU_SET_VOLBUTTON 0x40 /* set volume up/down position */
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#define PMU_BACKLIGHT_BRIGHT 0x41 /* set backlight brightness */
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#define PMU_GET_VOLBUTTON 0x48 /* get volume up/down position */
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#define PMU_PCEJECT 0x4c /* eject PC-card from slot */
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#define PMU_BATTERY_STATE 0x6b /* report battery state etc. */
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#define PMU_SMART_BATTERY_STATE 0x6f /* report battery state (new way) */
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#define PMU_SET_INTR_MASK 0x70 /* set PMU interrupt mask */
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#define PMU_INT_ACK 0x78 /* read interrupt bits */
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#define PMU_SHUTDOWN 0x7e /* turn power off */
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#define PMU_CPU_SPEED 0x7d /* control CPU speed on some models */
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#define PMU_SLEEP 0x7f /* put CPU to sleep */
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#define PMU_POWER_EVENTS 0x8f /* Send power-event commands to PMU */
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#define PMU_I2C_CMD 0x9a /* I2C operations */
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#define PMU_RESET 0xd0 /* reset CPU */
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#define PMU_GET_BRIGHTBUTTON 0xd9 /* report brightness up/down pos */
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#define PMU_GET_COVER 0xdc /* report cover open/closed */
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#define PMU_SYSTEM_READY 0xdf /* tell PMU we are awake */
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#define PMU_DOWNLOAD_STATUS 0xe2 /* Called by MacOS during boot... */
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#define PMU_READ_PMU_RAM 0xe8 /* read the PMU RAM... ??? */
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#define PMU_GET_VERSION 0xea /* read the PMU version */
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/* Bits to use with the PMU_POWER_CTRL0 command */
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#define PMU_POW0_ON 0x80 /* OR this to power ON the device */
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#define PMU_POW0_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
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#define PMU_POW0_HARD_DRIVE 0x04 /* Hard drive power
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* (on wallstreet/lombard ?) */
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/* Bits to use with the PMU_POWER_CTRL command */
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#define PMU_POW_ON 0x80 /* OR this to power ON the device */
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#define PMU_POW_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
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#define PMU_POW_BACKLIGHT 0x01 /* backlight power */
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#define PMU_POW_CHARGER 0x02 /* battery charger power */
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#define PMU_POW_IRLED 0x04 /* IR led power (on wallstreet) */
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#define PMU_POW_MEDIABAY 0x08 /* media bay power
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* (wallstreet/lombard ?) */
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/* Bits in PMU interrupt and interrupt mask bytes */
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#define PMU_INT_PCEJECT 0x04 /* PC-card eject buttons */
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#define PMU_INT_SNDBRT 0x08 /* sound/brightness up/down buttons */
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#define PMU_INT_ADB 0x10 /* ADB autopoll or reply data */
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#define PMU_INT_BATTERY 0x20 /* Battery state change */
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#define PMU_INT_ENVIRONMENT 0x40 /* Environment interrupts */
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#define PMU_INT_TICK 0x80 /* 1-second tick interrupt */
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/* Other bits in PMU interrupt valid when PMU_INT_ADB is set */
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#define PMU_INT_ADB_AUTO 0x04 /* ADB autopoll, when PMU_INT_ADB */
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#define PMU_INT_WAITING_CHARGER 0x01 /* ??? */
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#define PMU_INT_AUTO_SRQ_POLL 0x02 /* ??? */
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/* Bits in the environement message (either obtained via PMU_GET_COVER,
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* or via PMU_INT_ENVIRONMENT on core99 */
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#define PMU_ENV_LID_CLOSED 0x01 /* The lid is closed */
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/* I2C related definitions */
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#define PMU_I2C_MODE_SIMPLE 0
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#define PMU_I2C_MODE_STDSUB 1
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#define PMU_I2C_MODE_COMBINED 2
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#define PMU_I2C_BUS_STATUS 0
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#define PMU_I2C_BUS_SYSCLK 1
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#define PMU_I2C_BUS_POWER 2
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#define PMU_I2C_STATUS_OK 0
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#define PMU_I2C_STATUS_DATAREAD 1
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#define PMU_I2C_STATUS_BUSY 0xfe
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/* Kind of PMU (model) */
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enum {
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PMU_UNKNOWN,
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PMU_OHARE_BASED, /* 2400, 3400, 3500 (old G3 powerbook) */
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PMU_HEATHROW_BASED, /* PowerBook G3 series */
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PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */
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PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */
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PMU_68K_V1, /* 68K PMU, version 1 */
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PMU_68K_V2, /* 68K PMU, version 2 */
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};
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/* PMU PMU_POWER_EVENTS commands */
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enum {
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PMU_PWR_GET_POWERUP_EVENTS = 0x00,
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PMU_PWR_SET_POWERUP_EVENTS = 0x01,
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PMU_PWR_CLR_POWERUP_EVENTS = 0x02,
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PMU_PWR_GET_WAKEUP_EVENTS = 0x03,
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PMU_PWR_SET_WAKEUP_EVENTS = 0x04,
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PMU_PWR_CLR_WAKEUP_EVENTS = 0x05,
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};
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/* Power events wakeup bits */
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enum {
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PMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */
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PMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */
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PMU_PWR_WAKEUP_AC_CHANGE = 0x04,
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PMU_PWR_WAKEUP_LID_OPEN = 0x08,
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PMU_PWR_WAKEUP_RING = 0x10,
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};
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/*
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* This table indicates for each PMU opcode:
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* - the number of data bytes to be sent with the command, or -1
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* if a length byte should be sent,
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* - the number of response bytes which the PMU will return, or
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* -1 if it will send a length byte.
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*/
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static const int8_t pmu_data_len[256][2] = {
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/* 0 1 2 3 4 5 6 7 */
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{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},
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{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{ 0, 1},{ 0, 1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{ 0, 0},
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{-1, 0},{ 0, 0},{ 2, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},
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{ 0, -1},{ 0, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{ 0, -1},
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{ 4, 0},{20, 0},{-1, 0},{ 3, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{ 0, 4},{ 0, 20},{ 2, -1},{ 2, 1},{ 3, -1},{-1, -1},{-1, -1},{ 4, 0},
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{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{ 0, 1},{ 0, 1},{-1, -1},{ 1, 0},{ 1, 0},{-1, -1},{-1, -1},{-1, -1},
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{ 1, 0},{ 0, 0},{ 2, 0},{ 2, 0},{-1, 0},{ 1, 0},{ 3, 0},{ 1, 0},
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{ 0, 1},{ 1, 0},{ 0, 2},{ 0, 2},{ 0, -1},{-1, -1},{-1, -1},{-1, -1},
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{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{ 0, 3},{ 0, 3},{ 0, 2},{ 0, 8},{ 0, -1},{ 0, -1},{-1, -1},{-1, -1},
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{ 1, 0},{ 1, 0},{ 1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{ 0, -1},{ 0, -1},{-1, -1},{-1, -1},{-1, -1},{ 5, 1},{ 4, 1},{ 4, 1},
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{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{ 0, 5},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},
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{ 1, 0},{ 2, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{ 0, 1},{ 0, 1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},
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{ 2, 0},{ 2, 0},{ 2, 0},{ 4, 0},{-1, 0},{ 0, 0},{-1, 0},{-1, 0},
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{ 1, 1},{ 1, 0},{ 3, 0},{ 2, 0},{-1, -1},{-1, -1},{-1, -1},{-1, -1},
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{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},
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{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},
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{ 0, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{ 1, 1},{ 1, 1},{-1, -1},{-1, -1},{ 0, 1},{ 0, -1},{-1, -1},{-1, -1},
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{-1, 0},{ 4, 0},{ 0, 1},{-1, 0},{-1, 0},{ 4, 0},{-1, 0},{-1, 0},
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{ 3, -1},{-1, -1},{ 0, 1},{-1, -1},{ 0, -1},{-1, -1},{-1, -1},{ 0, 0},
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{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},{-1, 0},
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{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},{-1, -1},
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};
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/* Command protocol state machine */
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typedef enum {
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pmu_state_idle, /* Waiting for command */
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pmu_state_cmd, /* Receiving command */
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pmu_state_rsp, /* Responding to command */
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} PMUCmdState;
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/* MOS6522 PMU */
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typedef struct MOS6522PMUState {
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/*< private >*/
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MOS6522State parent_obj;
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} MOS6522PMUState;
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#define TYPE_MOS6522_PMU "mos6522-pmu"
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#define MOS6522_PMU(obj) OBJECT_CHECK(MOS6522PMUState, (obj), \
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TYPE_MOS6522_PMU)
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/**
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* PMUState:
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* @last_b: last value of B register
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*/
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typedef struct PMUState {
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/*< private >*/
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SysBusDevice parent_obj;
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/*< public >*/
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MemoryRegion mem;
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uint64_t frequency;
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qemu_irq via_irq;
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bool via_irq_state;
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/* PMU state */
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MOS6522PMUState mos6522_pmu;
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/* PMU low level protocol state */
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PMUCmdState cmd_state;
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uint8_t last_b;
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uint8_t cmd;
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uint32_t cmdlen;
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uint32_t rsplen;
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uint8_t cmd_buf_pos;
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uint8_t cmd_buf[128];
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uint8_t cmd_rsp_pos;
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uint8_t cmd_rsp_sz;
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uint8_t cmd_rsp[128];
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/* PMU events/interrupts */
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uint8_t intbits;
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uint8_t intmask;
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/* ADB */
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bool has_adb;
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ADBBusState adb_bus;
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uint16_t adb_poll_mask;
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uint8_t autopoll_rate_ms;
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uint8_t autopoll_mask;
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QEMUTimer *adb_poll_timer;
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uint8_t adb_reply_size;
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uint8_t adb_reply[ADB_MAX_OUT_LEN];
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/* RTC */
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uint32_t tick_offset;
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QEMUTimer *one_sec_timer;
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int64_t one_sec_target;
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/* GPIO */
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MacIOGPIOState *gpio;
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} PMUState;
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#define TYPE_VIA_PMU "via-pmu"
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#define VIA_PMU(obj) OBJECT_CHECK(PMUState, (obj), TYPE_VIA_PMU)
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#endif /* PMU_H */
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