237 lines
7.9 KiB
C
237 lines
7.9 KiB
C
/*
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* Definitions for talking to the PMU. The PMU is a microcontroller
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* which controls battery charging and system power on PowerBook 3400
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* and 2400 models as well as the RTC and various other things.
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*
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* Copyright (C) 1998 Paul Mackerras.
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*/
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#define PMU_DRIVER_VERSION 2
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/*
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* PMU commands
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*/
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#define PMU_POWER_CTRL0 0x10 /* control power of some devices */
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#define PMU_POWER_CTRL 0x11 /* control power of some devices */
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#define PMU_ADB_CMD 0x20 /* send ADB packet */
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#define PMU_ADB_POLL_OFF 0x21 /* disable ADB auto-poll */
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#define PMU_WRITE_NVRAM 0x33 /* write non-volatile RAM */
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#define PMU_READ_NVRAM 0x3b /* read non-volatile RAM */
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#define PMU_SET_RTC 0x30 /* set real-time clock */
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#define PMU_READ_RTC 0x38 /* read real-time clock */
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#define PMU_SET_VOLBUTTON 0x40 /* set volume up/down position */
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#define PMU_BACKLIGHT_BRIGHT 0x41 /* set backlight brightness */
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#define PMU_GET_VOLBUTTON 0x48 /* get volume up/down position */
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#define PMU_PCEJECT 0x4c /* eject PC-card from slot */
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#define PMU_BATTERY_STATE 0x6b /* report battery state etc. */
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#define PMU_SMART_BATTERY_STATE 0x6f /* report battery state (new way) */
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#define PMU_SET_INTR_MASK 0x70 /* set PMU interrupt mask */
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#define PMU_INT_ACK 0x78 /* read interrupt bits */
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#define PMU_SHUTDOWN 0x7e /* turn power off */
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#define PMU_CPU_SPEED 0x7d /* control CPU speed on some models */
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#define PMU_SLEEP 0x7f /* put CPU to sleep */
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#define PMU_POWER_EVENTS 0x8f /* Send power-event commands to PMU */
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#define PMU_I2C_CMD 0x9a /* I2C operations */
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#define PMU_RESET 0xd0 /* reset CPU */
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#define PMU_GET_BRIGHTBUTTON 0xd9 /* report brightness up/down pos */
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#define PMU_GET_COVER 0xdc /* report cover open/closed */
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#define PMU_SYSTEM_READY 0xdf /* tell PMU we are awake */
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#define PMU_GET_VERSION 0xea /* read the PMU version */
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/* Bits to use with the PMU_POWER_CTRL0 command */
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#define PMU_POW0_ON 0x80 /* OR this to power ON the device */
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#define PMU_POW0_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
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#define PMU_POW0_HARD_DRIVE 0x04 /* Hard drive power (on wallstreet/lombard ?) */
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/* Bits to use with the PMU_POWER_CTRL command */
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#define PMU_POW_ON 0x80 /* OR this to power ON the device */
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#define PMU_POW_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
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#define PMU_POW_BACKLIGHT 0x01 /* backlight power */
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#define PMU_POW_CHARGER 0x02 /* battery charger power */
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#define PMU_POW_IRLED 0x04 /* IR led power (on wallstreet) */
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#define PMU_POW_MEDIABAY 0x08 /* media bay power (wallstreet/lombard ?) */
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/* Bits in PMU interrupt and interrupt mask bytes */
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#define PMU_INT_PCEJECT 0x04 /* PC-card eject buttons */
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#define PMU_INT_SNDBRT 0x08 /* sound/brightness up/down buttons */
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#define PMU_INT_ADB 0x10 /* ADB autopoll or reply data */
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#define PMU_INT_BATTERY 0x20 /* Battery state change */
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#define PMU_INT_ENVIRONMENT 0x40 /* Environment interrupts */
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#define PMU_INT_TICK 0x80 /* 1-second tick interrupt */
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/* Other bits in PMU interrupt valid when PMU_INT_ADB is set */
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#define PMU_INT_ADB_AUTO 0x04 /* ADB autopoll, when PMU_INT_ADB */
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#define PMU_INT_WAITING_CHARGER 0x01 /* ??? */
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#define PMU_INT_AUTO_SRQ_POLL 0x02 /* ??? */
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/* Bits in the environement message (either obtained via PMU_GET_COVER,
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* or via PMU_INT_ENVIRONMENT on core99 */
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#define PMU_ENV_LID_CLOSED 0x01 /* The lid is closed */
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/* I2C related definitions */
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#define PMU_I2C_MODE_SIMPLE 0
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#define PMU_I2C_MODE_STDSUB 1
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#define PMU_I2C_MODE_COMBINED 2
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#define PMU_I2C_BUS_STATUS 0
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#define PMU_I2C_BUS_SYSCLK 1
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#define PMU_I2C_BUS_POWER 2
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#define PMU_I2C_STATUS_OK 0
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#define PMU_I2C_STATUS_DATAREAD 1
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#define PMU_I2C_STATUS_BUSY 0xfe
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/* Kind of PMU (model) */
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enum {
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PMU_UNKNOWN,
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PMU_OHARE_BASED, /* 2400, 3400, 3500 (old G3 powerbook) */
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PMU_HEATHROW_BASED, /* PowerBook G3 series */
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PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */
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PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */
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PMU_68K_V1, /* 68K PMU, version 1 */
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PMU_68K_V2, /* 68K PMU, version 2 */
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};
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/* PMU PMU_POWER_EVENTS commands */
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enum {
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PMU_PWR_GET_POWERUP_EVENTS = 0x00,
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PMU_PWR_SET_POWERUP_EVENTS = 0x01,
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PMU_PWR_CLR_POWERUP_EVENTS = 0x02,
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PMU_PWR_GET_WAKEUP_EVENTS = 0x03,
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PMU_PWR_SET_WAKEUP_EVENTS = 0x04,
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PMU_PWR_CLR_WAKEUP_EVENTS = 0x05,
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};
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/* Power events wakeup bits */
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enum {
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PMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */
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PMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */
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PMU_PWR_WAKEUP_AC_CHANGE = 0x04,
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PMU_PWR_WAKEUP_LID_OPEN = 0x08,
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PMU_PWR_WAKEUP_RING = 0x10,
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};
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/*
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* Ioctl commands for the /dev/pmu device
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*/
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#include <linux/ioctl.h>
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/* no param */
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#define PMU_IOC_SLEEP _IO('B', 0)
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/* out param: u32* backlight value: 0 to 15 */
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#define PMU_IOC_GET_BACKLIGHT _IOR('B', 1, size_t)
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/* in param: u32 backlight value: 0 to 15 */
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#define PMU_IOC_SET_BACKLIGHT _IOW('B', 2, size_t)
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/* out param: u32* PMU model */
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#define PMU_IOC_GET_MODEL _IOR('B', 3, size_t)
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/* out param: u32* has_adb: 0 or 1 */
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#define PMU_IOC_HAS_ADB _IOR('B', 4, size_t)
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/* out param: u32* can_sleep: 0 or 1 */
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#define PMU_IOC_CAN_SLEEP _IOR('B', 5, size_t)
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/* no param, but historically was _IOR('B', 6, 0), meaning 4 bytes */
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#define PMU_IOC_GRAB_BACKLIGHT _IOR('B', 6, size_t)
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#ifdef __KERNEL__
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extern int find_via_pmu(void);
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extern int pmu_request(struct adb_request *req,
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void (*done)(struct adb_request *), int nbytes, ...);
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extern int pmu_queue_request(struct adb_request *req);
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extern void pmu_poll(void);
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extern void pmu_poll_adb(void); /* For use by xmon */
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extern void pmu_wait_complete(struct adb_request *req);
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/* For use before switching interrupts off for a long time;
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* warning: not stackable
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*/
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extern void pmu_suspend(void);
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extern void pmu_resume(void);
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extern void pmu_enable_irled(int on);
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extern void pmu_restart(void);
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extern void pmu_shutdown(void);
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extern void pmu_unlock(void);
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extern int pmu_present(void);
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extern int pmu_get_model(void);
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#ifdef CONFIG_PM
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/*
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* Stuff for putting the powerbook to sleep and waking it again.
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*
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*/
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#include <linux/list.h>
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struct pmu_sleep_notifier
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{
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void (*notifier_call)(struct pmu_sleep_notifier *self, int when);
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int priority;
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struct list_head list;
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};
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/* Code values for calling sleep/wakeup handlers
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*/
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#define PBOOK_SLEEP_REQUEST 1
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#define PBOOK_SLEEP_NOW 2
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#define PBOOK_WAKE 3
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/* priority levels in notifiers */
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#define SLEEP_LEVEL_VIDEO 100 /* Video driver (first wake) */
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#define SLEEP_LEVEL_MEDIABAY 90 /* Media bay driver */
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#define SLEEP_LEVEL_BLOCK 80 /* IDE, SCSI */
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#define SLEEP_LEVEL_NET 70 /* bmac, gmac */
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#define SLEEP_LEVEL_MISC 60 /* Anything else */
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#define SLEEP_LEVEL_USERLAND 55 /* Reserved for apm_emu */
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#define SLEEP_LEVEL_ADB 50 /* ADB (async) */
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#define SLEEP_LEVEL_SOUND 40 /* Sound driver (blocking) */
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/* special register notifier functions */
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int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier);
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int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier);
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#endif /* CONFIG_PM */
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#define PMU_MAX_BATTERIES 2
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/* values for pmu_power_flags */
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#define PMU_PWR_AC_PRESENT 0x00000001
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/* values for pmu_battery_info.flags */
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#define PMU_BATT_PRESENT 0x00000001
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#define PMU_BATT_CHARGING 0x00000002
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#define PMU_BATT_TYPE_MASK 0x000000f0
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#define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */
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#define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */
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#define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */
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struct pmu_battery_info
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{
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unsigned int flags;
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unsigned int charge; /* current charge */
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unsigned int max_charge; /* maximum charge */
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signed int amperage; /* current, positive if charging */
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unsigned int voltage; /* voltage */
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unsigned int time_remaining; /* remaining time */
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};
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extern int pmu_battery_count;
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extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
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extern unsigned int pmu_power_flags;
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/* Backlight */
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extern void pmu_backlight_init(void);
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/* some code needs to know if the PMU was suspended for hibernation */
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#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PPC32)
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extern int pmu_sys_suspended;
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#else
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/* if power management is not configured it can't be suspended */
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#define pmu_sys_suspended 0
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#endif
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#endif /* __KERNEL__ */
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