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 #include <linux/config.h> 10 11 #define PMU_DRIVER_VERSION 2 12 13 /* 14 * PMU commands 15 */ 16 #define PMU_POWER_CTRL0 0x10 /* control power of some devices */ 17 #define PMU_POWER_CTRL 0x11 /* control power of some devices */ 18 #define PMU_ADB_CMD 0x20 /* send ADB packet */ 19 #define PMU_ADB_POLL_OFF 0x21 /* disable ADB auto-poll */ 20 #define PMU_WRITE_NVRAM 0x33 /* write non-volatile RAM */ 21 #define PMU_READ_NVRAM 0x3b /* read non-volatile RAM */ 22 #define PMU_SET_RTC 0x30 /* set real-time clock */ 23 #define PMU_READ_RTC 0x38 /* read real-time clock */ 24 #define PMU_SET_VOLBUTTON 0x40 /* set volume up/down position */ 25 #define PMU_BACKLIGHT_BRIGHT 0x41 /* set backlight brightness */ 26 #define PMU_GET_VOLBUTTON 0x48 /* get volume up/down position */ 27 #define PMU_PCEJECT 0x4c /* eject PC-card from slot */ 28 #define PMU_BATTERY_STATE 0x6b /* report battery state etc. */ 29 #define PMU_SMART_BATTERY_STATE 0x6f /* report battery state (new way) */ 30 #define PMU_SET_INTR_MASK 0x70 /* set PMU interrupt mask */ 31 #define PMU_INT_ACK 0x78 /* read interrupt bits */ 32 #define PMU_SHUTDOWN 0x7e /* turn power off */ 33 #define PMU_CPU_SPEED 0x7d /* control CPU speed on some models */ 34 #define PMU_SLEEP 0x7f /* put CPU to sleep */ 35 #define PMU_POWER_EVENTS 0x8f /* Send power-event commands to PMU */ 36 #define PMU_I2C_CMD 0x9a /* I2C operations */ 37 #define PMU_RESET 0xd0 /* reset CPU */ 38 #define PMU_GET_BRIGHTBUTTON 0xd9 /* report brightness up/down pos */ 39 #define PMU_GET_COVER 0xdc /* report cover open/closed */ 40 #define PMU_SYSTEM_READY 0xdf /* tell PMU we are awake */ 41 #define PMU_GET_VERSION 0xea /* read the PMU version */ 42 43 /* Bits to use with the PMU_POWER_CTRL0 command */ 44 #define PMU_POW0_ON 0x80 /* OR this to power ON the device */ 45 #define PMU_POW0_OFF 0x00 /* leave bit 7 to 0 to power it OFF */ 46 #define PMU_POW0_HARD_DRIVE 0x04 /* Hard drive power (on wallstreet/lombard ?) */ 47 48 /* Bits to use with the PMU_POWER_CTRL command */ 49 #define PMU_POW_ON 0x80 /* OR this to power ON the device */ 50 #define PMU_POW_OFF 0x00 /* leave bit 7 to 0 to power it OFF */ 51 #define PMU_POW_BACKLIGHT 0x01 /* backlight power */ 52 #define PMU_POW_CHARGER 0x02 /* battery charger power */ 53 #define PMU_POW_IRLED 0x04 /* IR led power (on wallstreet) */ 54 #define PMU_POW_MEDIABAY 0x08 /* media bay power (wallstreet/lombard ?) */ 55 56 /* Bits in PMU interrupt and interrupt mask bytes */ 57 #define PMU_INT_PCEJECT 0x04 /* PC-card eject buttons */ 58 #define PMU_INT_SNDBRT 0x08 /* sound/brightness up/down buttons */ 59 #define PMU_INT_ADB 0x10 /* ADB autopoll or reply data */ 60 #define PMU_INT_BATTERY 0x20 /* Battery state change */ 61 #define PMU_INT_ENVIRONMENT 0x40 /* Environment interrupts */ 62 #define PMU_INT_TICK 0x80 /* 1-second tick interrupt */ 63 64 /* Other bits in PMU interrupt valid when PMU_INT_ADB is set */ 65 #define PMU_INT_ADB_AUTO 0x04 /* ADB autopoll, when PMU_INT_ADB */ 66 #define PMU_INT_WAITING_CHARGER 0x01 /* ??? */ 67 #define PMU_INT_AUTO_SRQ_POLL 0x02 /* ??? */ 68 69 /* Bits in the environement message (either obtained via PMU_GET_COVER, 70 * or via PMU_INT_ENVIRONMENT on core99 */ 71 #define PMU_ENV_LID_CLOSED 0x01 /* The lid is closed */ 72 73 /* I2C related definitions */ 74 #define PMU_I2C_MODE_SIMPLE 0 75 #define PMU_I2C_MODE_STDSUB 1 76 #define PMU_I2C_MODE_COMBINED 2 77 78 #define PMU_I2C_BUS_STATUS 0 79 #define PMU_I2C_BUS_SYSCLK 1 80 #define PMU_I2C_BUS_POWER 2 81 82 #define PMU_I2C_STATUS_OK 0 83 #define PMU_I2C_STATUS_DATAREAD 1 84 #define PMU_I2C_STATUS_BUSY 0xfe 85 86 87 /* Kind of PMU (model) */ 88 enum { 89 PMU_UNKNOWN, 90 PMU_OHARE_BASED, /* 2400, 3400, 3500 (old G3 powerbook) */ 91 PMU_HEATHROW_BASED, /* PowerBook G3 series */ 92 PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */ 93 PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */ 94 PMU_68K_V1, /* 68K PMU, version 1 */ 95 PMU_68K_V2, /* 68K PMU, version 2 */ 96 }; 97 98 /* PMU PMU_POWER_EVENTS commands */ 99 enum { 100 PMU_PWR_GET_POWERUP_EVENTS = 0x00, 101 PMU_PWR_SET_POWERUP_EVENTS = 0x01, 102 PMU_PWR_CLR_POWERUP_EVENTS = 0x02, 103 PMU_PWR_GET_WAKEUP_EVENTS = 0x03, 104 PMU_PWR_SET_WAKEUP_EVENTS = 0x04, 105 PMU_PWR_CLR_WAKEUP_EVENTS = 0x05, 106 }; 107 108 /* Power events wakeup bits */ 109 enum { 110 PMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */ 111 PMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */ 112 PMU_PWR_WAKEUP_AC_CHANGE = 0x04, 113 PMU_PWR_WAKEUP_LID_OPEN = 0x08, 114 PMU_PWR_WAKEUP_RING = 0x10, 115 }; 116 117 /* 118 * Ioctl commands for the /dev/pmu device 119 */ 120 #include <linux/ioctl.h> 121 122 /* no param */ 123 #define PMU_IOC_SLEEP _IO('B', 0) 124 /* out param: u32* backlight value: 0 to 15 */ 125 #define PMU_IOC_GET_BACKLIGHT _IOR('B', 1, sizeof(__u32*)) 126 /* in param: u32 backlight value: 0 to 15 */ 127 #define PMU_IOC_SET_BACKLIGHT _IOW('B', 2, sizeof(__u32)) 128 /* out param: u32* PMU model */ 129 #define PMU_IOC_GET_MODEL _IOR('B', 3, sizeof(__u32*)) 130 /* out param: u32* has_adb: 0 or 1 */ 131 #define PMU_IOC_HAS_ADB _IOR('B', 4, sizeof(__u32*)) 132 /* out param: u32* can_sleep: 0 or 1 */ 133 #define PMU_IOC_CAN_SLEEP _IOR('B', 5, sizeof(__u32*)) 134 /* no param */ 135 #define PMU_IOC_GRAB_BACKLIGHT _IOR('B', 6, 0) 136 137 #ifdef __KERNEL__ 138 139 extern int find_via_pmu(void); 140 extern int via_pmu_start(void); 141 142 extern int pmu_request(struct adb_request *req, 143 void (*done)(struct adb_request *), int nbytes, ...); 144 145 extern void pmu_poll(void); 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); 157 158 extern int pmu_present(void); 159 extern int pmu_get_model(void); 160 161 extern int pmu_i2c_combined_read(int bus, int addr, int subaddr, u8* data, int len); 162 extern int pmu_i2c_stdsub_write(int bus, int addr, int subaddr, u8* data, int len); 163 extern int pmu_i2c_simple_read(int bus, int addr, u8* data, int len); 164 extern int pmu_i2c_simple_write(int bus, int addr, u8* data, int len); 165 166 167 #ifdef CONFIG_PMAC_PBOOK 168 /* 169 * Stuff for putting the powerbook to sleep and waking it again. 170 * 171 */ 172 #include <linux/list.h> 173 174 struct pmu_sleep_notifier 175 { 176 int (*notifier_call)(struct pmu_sleep_notifier *self, int when); 177 int priority; 178 struct list_head list; 179 }; 180 181 /* Code values for calling sleep/wakeup handlers 182 * 183 * Note: If a sleep request got cancelled, all drivers will get 184 * the PBOOK_SLEEP_REJECT, even those who didn't get the PBOOK_SLEEP_REQUEST. 185 */ 186 #define PBOOK_SLEEP_REQUEST 1 187 #define PBOOK_SLEEP_NOW 2 188 #define PBOOK_SLEEP_REJECT 3 189 #define PBOOK_WAKE 4 190 191 /* Result codes returned by the notifiers */ 192 #define PBOOK_SLEEP_OK 0 193 #define PBOOK_SLEEP_REFUSE -1 194 195 /* priority levels in notifiers */ 196 #define SLEEP_LEVEL_VIDEO 100 /* Video driver (first wake) */ 197 #define SLEEP_LEVEL_MEDIABAY 90 /* Media bay driver */ 198 #define SLEEP_LEVEL_BLOCK 80 /* IDE, SCSI */ 199 #define SLEEP_LEVEL_NET 70 /* bmac, gmac */ 200 #define SLEEP_LEVEL_MISC 60 /* Anything else */ 201 #define SLEEP_LEVEL_USERLAND 55 /* Reserved for apm_emu */ 202 #define SLEEP_LEVEL_ADB 50 /* ADB (async) */ 203 #define SLEEP_LEVEL_SOUND 40 /* Sound driver (blocking) */ 204 205 /* special register notifier functions */ 206 int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier); 207 int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier); 208 209 #define PMU_MAX_BATTERIES 2 210 211 /* values for pmu_power_flags */ 212 #define PMU_PWR_AC_PRESENT 0x00000001 213 214 /* values for pmu_battery_info.flags */ 215 #define PMU_BATT_PRESENT 0x00000001 216 #define PMU_BATT_CHARGING 0x00000002 217 #define PMU_BATT_TYPE_MASK 0x000000f0 218 #define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */ 219 #define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */ 220 #define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */ 221 222 struct pmu_battery_info 223 { 224 unsigned int flags; 225 unsigned int charge; /* current charge */ 226 unsigned int max_charge; /* maximum charge */ 227 signed int current; /* current, positive if charging */ 228 unsigned int voltage; /* voltage */ 229 unsigned int time_remaining; /* remaining time */ 230 }; 231 232 extern int pmu_battery_count; 233 extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; 234 extern unsigned int pmu_power_flags; 235 236 #endif /* CONFIG_PMAC_PBOOK */ 237 238 #endif /* __KERNEL__ */ 239