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) */ 87 enum { 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 */ 98 enum { 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 */ 108 enum { 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__ 137 138 extern int find_via_pmu(void); 139 140 extern int pmu_request(struct adb_request *req, 141 void (*done)(struct adb_request *), int nbytes, ...); 142 extern int pmu_queue_request(struct adb_request *req); 143 extern void pmu_poll(void); 144 extern void pmu_poll_adb(void); /* For use by xmon */ 145 extern 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 extern void pmu_suspend(void); 151 extern void pmu_resume(void); 152 153 extern void pmu_enable_irled(int on); 154 155 extern void pmu_restart(void); 156 extern void pmu_shutdown(void); 157 extern void pmu_unlock(void); 158 159 extern int pmu_present(void); 160 extern int pmu_get_model(void); 161 162 #ifdef CONFIG_PM 163 /* 164 * Stuff for putting the powerbook to sleep and waking it again. 165 * 166 */ 167 #include <linux/list.h> 168 169 struct pmu_sleep_notifier 170 { 171 void (*notifier_call)(struct pmu_sleep_notifier *self, int when); 172 int priority; 173 struct list_head list; 174 }; 175 176 /* Code values for calling sleep/wakeup handlers 177 */ 178 #define PBOOK_SLEEP_REQUEST 1 179 #define PBOOK_SLEEP_NOW 2 180 #define PBOOK_WAKE 3 181 182 /* priority levels in notifiers */ 183 #define SLEEP_LEVEL_VIDEO 100 /* Video driver (first wake) */ 184 #define SLEEP_LEVEL_MEDIABAY 90 /* Media bay driver */ 185 #define SLEEP_LEVEL_BLOCK 80 /* IDE, SCSI */ 186 #define SLEEP_LEVEL_NET 70 /* bmac, gmac */ 187 #define SLEEP_LEVEL_MISC 60 /* Anything else */ 188 #define SLEEP_LEVEL_USERLAND 55 /* Reserved for apm_emu */ 189 #define SLEEP_LEVEL_ADB 50 /* ADB (async) */ 190 #define SLEEP_LEVEL_SOUND 40 /* Sound driver (blocking) */ 191 192 /* special register notifier functions */ 193 int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier); 194 int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier); 195 196 #endif /* CONFIG_PM */ 197 198 #define PMU_MAX_BATTERIES 2 199 200 /* values for pmu_power_flags */ 201 #define PMU_PWR_AC_PRESENT 0x00000001 202 203 /* values for pmu_battery_info.flags */ 204 #define PMU_BATT_PRESENT 0x00000001 205 #define PMU_BATT_CHARGING 0x00000002 206 #define PMU_BATT_TYPE_MASK 0x000000f0 207 #define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */ 208 #define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */ 209 #define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */ 210 211 struct pmu_battery_info 212 { 213 unsigned int flags; 214 unsigned int charge; /* current charge */ 215 unsigned int max_charge; /* maximum charge */ 216 signed int amperage; /* current, positive if charging */ 217 unsigned int voltage; /* voltage */ 218 unsigned int time_remaining; /* remaining time */ 219 }; 220 221 extern int pmu_battery_count; 222 extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; 223 extern unsigned int pmu_power_flags; 224 225 /* Backlight */ 226 extern void pmu_backlight_init(void); 227 228 #endif /* __KERNEL__ */ 229