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Diffstat (limited to 'include/linux/pmu.h')
| -rw-r--r-- | include/linux/pmu.h | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/include/linux/pmu.h b/include/linux/pmu.h new file mode 100644 index 00000000000..6d73eada277 --- /dev/null +++ b/include/linux/pmu.h @@ -0,0 +1,240 @@ +/* + * 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. + */ + +#include <linux/config.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, /* 68K PMU, version 1 */ + PMU_68K_V2, /* 68K PMU, version 2 */ +}; + +/* 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) + +#ifdef __KERNEL__ + +extern int find_via_pmu(void); + +extern int pmu_request(struct adb_request *req, + void (*done)(struct adb_request *), int nbytes, ...); + +extern void pmu_poll(void); +extern void pmu_poll_adb(void); /* For use by xmon */ +extern void pmu_wait_complete(struct adb_request *req); + +/* For use before switching interrupts off for a long time; + * warning: not stackable + */ +extern void pmu_suspend(void); +extern void pmu_resume(void); + +extern void pmu_enable_irled(int on); + +extern void pmu_restart(void); +extern void pmu_shutdown(void); +extern void pmu_unlock(void); + +extern int pmu_present(void); +extern int pmu_get_model(void); + +extern int pmu_i2c_combined_read(int bus, int addr, int subaddr, u8* data, int len); +extern int pmu_i2c_stdsub_write(int bus, int addr, int subaddr, u8* data, int len); +extern int pmu_i2c_simple_read(int bus, int addr, u8* data, int len); +extern int pmu_i2c_simple_write(int bus, int addr, u8* data, int len); + + +#ifdef CONFIG_PMAC_PBOOK +/* + * Stuff for putting the powerbook to sleep and waking it again. + * + */ +#include <linux/list.h> + +struct pmu_sleep_notifier +{ + int (*notifier_call)(struct pmu_sleep_notifier *self, int when); + int priority; + struct list_head list; +}; + +/* Code values for calling sleep/wakeup handlers + * + * Note: If a sleep request got cancelled, all drivers will get + * the PBOOK_SLEEP_REJECT, even those who didn't get the PBOOK_SLEEP_REQUEST. + */ +#define PBOOK_SLEEP_REQUEST 1 +#define PBOOK_SLEEP_NOW 2 +#define PBOOK_SLEEP_REJECT 3 +#define PBOOK_WAKE 4 + +/* Result codes returned by the notifiers */ +#define PBOOK_SLEEP_OK 0 +#define PBOOK_SLEEP_REFUSE -1 + +/* priority levels in notifiers */ +#define SLEEP_LEVEL_VIDEO 100 /* Video driver (first wake) */ +#define SLEEP_LEVEL_MEDIABAY 90 /* Media bay driver */ +#define SLEEP_LEVEL_BLOCK 80 /* IDE, SCSI */ +#define SLEEP_LEVEL_NET 70 /* bmac, gmac */ +#define SLEEP_LEVEL_MISC 60 /* Anything else */ +#define SLEEP_LEVEL_USERLAND 55 /* Reserved for apm_emu */ +#define SLEEP_LEVEL_ADB 50 /* ADB (async) */ +#define SLEEP_LEVEL_SOUND 40 /* Sound driver (blocking) */ + +/* special register notifier functions */ +int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier); +int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier); + +#define PMU_MAX_BATTERIES 2 + +/* values for pmu_power_flags */ +#define PMU_PWR_AC_PRESENT 0x00000001 + +/* values for pmu_battery_info.flags */ +#define PMU_BATT_PRESENT 0x00000001 +#define PMU_BATT_CHARGING 0x00000002 +#define PMU_BATT_TYPE_MASK 0x000000f0 +#define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */ +#define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */ +#define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */ + +struct pmu_battery_info +{ + unsigned int flags; + unsigned int charge; /* current charge */ + unsigned int max_charge; /* maximum charge */ + signed int amperage; /* current, positive if charging */ + unsigned int voltage; /* voltage */ + unsigned int time_remaining; /* remaining time */ +}; + +extern int pmu_battery_count; +extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES]; +extern unsigned int pmu_power_flags; + +#endif /* CONFIG_PMAC_PBOOK */ + +#endif /* __KERNEL__ */ |