1/* 2 * Definitions for talking to the PMU. The PMU is a microcontroller 3 * which controls battery charging and system power on PowerBook 3400 4 * and 2400 models as well as the RTC and various other things. 5 * 6 * Copyright (C) 1998 Paul Mackerras. 7 */ 8 9 10#define PMU_DRIVER_VERSION 2 11 12/* 13 * PMU commands 14 */ 15#define PMU_POWER_CTRL0 0x10 /* control power of some devices */ 16#define PMU_POWER_CTRL 0x11 /* control power of some devices */ 17#define PMU_ADB_CMD 0x20 /* send ADB packet */ 18#define PMU_ADB_POLL_OFF 0x21 /* disable ADB auto-poll */ 19#define PMU_WRITE_NVRAM 0x33 /* write non-volatile RAM */ 20#define PMU_READ_NVRAM 0x3b /* read non-volatile RAM */ 21#define PMU_SET_RTC 0x30 /* set real-time clock */ 22#define PMU_READ_RTC 0x38 /* read real-time clock */ 23#define PMU_SET_VOLBUTTON 0x40 /* set volume up/down position */ 24#define PMU_BACKLIGHT_BRIGHT 0x41 /* set backlight brightness */ 25#define PMU_GET_VOLBUTTON 0x48 /* get volume up/down position */ 26#define PMU_PCEJECT 0x4c /* eject PC-card from slot */ 27#define PMU_BATTERY_STATE 0x6b /* report battery state etc. */ 28#define PMU_SMART_BATTERY_STATE 0x6f /* report battery state (new way) */ 29#define PMU_SET_INTR_MASK 0x70 /* set PMU interrupt mask */ 30#define PMU_INT_ACK 0x78 /* read interrupt bits */ 31#define PMU_SHUTDOWN 0x7e /* turn power off */ 32#define PMU_CPU_SPEED 0x7d /* control CPU speed on some models */ 33#define PMU_SLEEP 0x7f /* put CPU to sleep */ 34#define PMU_POWER_EVENTS 0x8f /* Send power-event commands to PMU */ 35#define PMU_I2C_CMD 0x9a /* I2C operations */ 36#define PMU_RESET 0xd0 /* reset CPU */ 37#define PMU_GET_BRIGHTBUTTON 0xd9 /* report brightness up/down pos */ 38#define PMU_GET_COVER 0xdc /* report cover open/closed */ 39#define PMU_SYSTEM_READY 0xdf /* tell PMU we are awake */ 40#define PMU_GET_VERSION 0xea /* read the PMU version */ 41 42/* Bits to use with the PMU_POWER_CTRL0 command */ 43#define PMU_POW0_ON 0x80 /* OR this to power ON the device */ 44#define PMU_POW0_OFF 0x00 /* leave bit 7 to 0 to power it OFF */ 45#define PMU_POW0_HARD_DRIVE 0x04 /* Hard drive power (on wallstreet/lombard ?) */ 46 47/* Bits to use with the PMU_POWER_CTRL command */ 48#define PMU_POW_ON 0x80 /* OR this to power ON the device */ 49#define PMU_POW_OFF 0x00 /* leave bit 7 to 0 to power it OFF */ 50#define PMU_POW_BACKLIGHT 0x01 /* backlight power */ 51#define PMU_POW_CHARGER 0x02 /* battery charger power */ 52#define PMU_POW_IRLED 0x04 /* IR led power (on wallstreet) */ 53#define PMU_POW_MEDIABAY 0x08 /* media bay power (wallstreet/lombard ?) */ 54 55/* Bits in PMU interrupt and interrupt mask bytes */ 56#define PMU_INT_PCEJECT 0x04 /* PC-card eject buttons */ 57#define PMU_INT_SNDBRT 0x08 /* sound/brightness up/down buttons */ 58#define PMU_INT_ADB 0x10 /* ADB autopoll or reply data */ 59#define PMU_INT_BATTERY 0x20 /* Battery state change */ 60#define PMU_INT_ENVIRONMENT 0x40 /* Environment interrupts */ 61#define PMU_INT_TICK 0x80 /* 1-second tick interrupt */ 62 63/* Other bits in PMU interrupt valid when PMU_INT_ADB is set */ 64#define PMU_INT_ADB_AUTO 0x04 /* ADB autopoll, when PMU_INT_ADB */ 65#define PMU_INT_WAITING_CHARGER 0x01 /* ??? */ 66#define PMU_INT_AUTO_SRQ_POLL 0x02 /* ??? */ 67 68/* Bits in the environement message (either obtained via PMU_GET_COVER, 69 * or via PMU_INT_ENVIRONMENT on core99 */ 70#define PMU_ENV_LID_CLOSED 0x01 /* The lid is closed */ 71 72/* I2C related definitions */ 73#define PMU_I2C_MODE_SIMPLE 0 74#define PMU_I2C_MODE_STDSUB 1 75#define PMU_I2C_MODE_COMBINED 2 76 77#define PMU_I2C_BUS_STATUS 0 78#define PMU_I2C_BUS_SYSCLK 1 79#define PMU_I2C_BUS_POWER 2 80 81#define PMU_I2C_STATUS_OK 0 82#define PMU_I2C_STATUS_DATAREAD 1 83#define PMU_I2C_STATUS_BUSY 0xfe 84 85 86/* Kind of PMU (model) */ 87enum { 88 PMU_UNKNOWN, 89 PMU_OHARE_BASED, /* 2400, 3400, 3500 (old G3 powerbook) */ 90 PMU_HEATHROW_BASED, /* PowerBook G3 series */ 91 PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */ 92 PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */ 93 PMU_68K_V1, /* 68K PMU, version 1 */ 94 PMU_68K_V2, /* 68K PMU, version 2 */ 95}; 96 97/* PMU PMU_POWER_EVENTS commands */ 98enum { 99 PMU_PWR_GET_POWERUP_EVENTS = 0x00, 100 PMU_PWR_SET_POWERUP_EVENTS = 0x01, 101 PMU_PWR_CLR_POWERUP_EVENTS = 0x02, 102 PMU_PWR_GET_WAKEUP_EVENTS = 0x03, 103 PMU_PWR_SET_WAKEUP_EVENTS = 0x04, 104 PMU_PWR_CLR_WAKEUP_EVENTS = 0x05, 105}; 106 107/* Power events wakeup bits */ 108enum { 109 PMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */ 110 PMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */ 111 PMU_PWR_WAKEUP_AC_CHANGE = 0x04, 112 PMU_PWR_WAKEUP_LID_OPEN = 0x08, 113 PMU_PWR_WAKEUP_RING = 0x10, 114}; 115 116/* 117 * Ioctl commands for the /dev/pmu device 118 */ 119#include <linux/ioctl.h> 120 121/* no param */ 122#define PMU_IOC_SLEEP _IO('B', 0) 123/* out param: u32* backlight value: 0 to 15 */ 124#define PMU_IOC_GET_BACKLIGHT _IOR('B', 1, size_t) 125/* in param: u32 backlight value: 0 to 15 */ 126#define PMU_IOC_SET_BACKLIGHT _IOW('B', 2, size_t) 127/* out param: u32* PMU model */ 128#define PMU_IOC_GET_MODEL _IOR('B', 3, size_t) 129/* out param: u32* has_adb: 0 or 1 */ 130#define PMU_IOC_HAS_ADB _IOR('B', 4, size_t) 131/* out param: u32* can_sleep: 0 or 1 */ 132#define PMU_IOC_CAN_SLEEP _IOR('B', 5, size_t) 133/* no param, but historically was _IOR('B', 6, 0), meaning 4 bytes */ 134#define PMU_IOC_GRAB_BACKLIGHT _IOR('B', 6, size_t) 135 136#ifdef __KERNEL__ 137 138extern int find_via_pmu(void); 139 140extern int pmu_request(struct adb_request *req, 141 void (*done)(struct adb_request *), int nbytes, ...); 142extern int pmu_queue_request(struct adb_request *req); 143extern void pmu_poll(void); 144extern void pmu_poll_adb(void); /* For use by xmon */ 145extern void pmu_wait_complete(struct adb_request *req); 146 147/* For use before switching interrupts off for a long time; 148 * warning: not stackable 149 */ 150#if defined(CONFIG_ADB_PMU) 151extern void pmu_suspend(void); 152extern void pmu_resume(void); 153#else 154static inline void pmu_suspend(void) 155{} 156static inline void pmu_resume(void) 157{} 158#endif 159 160extern void pmu_enable_irled(int on); 161 162extern void pmu_restart(void); 163extern void pmu_shutdown(void); 164extern void pmu_unlock(void); 165 166extern int pmu_present(void); 167extern int pmu_get_model(void); 168 169extern void pmu_backlight_set_sleep(int sleep); 170 171#define PMU_MAX_BATTERIES 2 172 173/* values for pmu_power_flags */ 174#define PMU_PWR_AC_PRESENT 0x00000001 175 176/* values for pmu_battery_info.flags */ 177#define PMU_BATT_PRESENT 0x00000001 178#define PMU_BATT_CHARGING 0x00000002 179#define PMU_BATT_TYPE_MASK 0x000000f0 180#define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */ 181#define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */ 182#define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */ 183 184struct pmu_battery_info 185{ 186 unsigned int flags; 187 unsigned int charge; /* current charge */ 188 unsigned int max_charge; /* maximum charge */ 189 signed int amperage; /* current, positive if charging */ 190 unsigned int voltage; /* voltage */ 191 unsigned int time_remaining; /* remaining time */ 192}; 193 194extern int pmu_battery_count; 195extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; 196extern unsigned int pmu_power_flags; 197 198/* Backlight */ 199extern void pmu_backlight_init(void); 200 201/* some code needs to know if the PMU was suspended for hibernation */ 202#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32) 203extern int pmu_sys_suspended; 204#else 205/* if power management is not configured it can't be suspended */ 206#define pmu_sys_suspended 0 207#endif 208 209#endif /* __KERNEL__ */ 210