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/*

 * 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.

 */

#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 int pmu_queue_request(struct adb_request *req);

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);

#ifdef CONFIG_PM

/*

 * Stuff for putting the powerbook to sleep and waking it again.

 *

 */

#include <linux/list.h>

struct pmu_sleep_notifier

{

        void (*notifier_call)(struct pmu_sleep_notifier *self, int when);

        int priority;

        struct list_head list;

};

/* Code values for calling sleep/wakeup handlers

 */

#define PBOOK_SLEEP_REQUEST     1

#define PBOOK_SLEEP_NOW         2

#define PBOOK_WAKE              3

/* 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);

#endif /* CONFIG_PM */

#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;

/* Backlight */

extern void pmu_backlight_init(void);

/* some code needs to know if the PMU was suspended for hibernation */

#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)

extern int pmu_sys_suspended;

#else

/* if power management is not configured it can't be suspended */

#define pmu_sys_suspended       0

#endif

#endif  /* __KERNEL__ */