include/linux/pmu.h - kernel/common - Git at Google

 /*
  * 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
  */
 #if defined(CONFIG_ADB_PMU)
 extern void pmu_suspend(void);
 extern void pmu_resume(void);
 #else
 static inline void pmu_suspend(void)
 {}
 static inline void pmu_resume(void)
 {}
 #endif

 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 void pmu_backlight_set_sleep(int sleep);

 #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_SUSPEND) && 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__ */
	/*
	* 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
	*/
	#if defined(CONFIG_ADB_PMU)
	extern void pmu_suspend(void);
	extern void pmu_resume(void);
	#else
	static inline void pmu_suspend(void)
	{}
	static inline void pmu_resume(void)
	{}
	#endif

	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 void pmu_backlight_set_sleep(int sleep);

	#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_SUSPEND) && 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__ */