[deliverable/linux.git] / include / linux / pmu.h

/*
 * 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__ */
Commit	Line	Data
1da177e4 LT	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
1da177e4 LT	9
	10	#define PMU_DRIVER_VERSION 2
	11
	12	/*
	13	* PMU commands
	14	*/
	15	#define PMU_POWER_CTRL0 0x10 /* control power of some devices */
	16	#define PMU_POWER_CTRL 0x11 /* control power of some devices */
	17	#define PMU_ADB_CMD 0x20 /* send ADB packet */
	18	#define PMU_ADB_POLL_OFF 0x21 /* disable ADB auto-poll */
	19	#define PMU_WRITE_NVRAM 0x33 /* write non-volatile RAM */
	20	#define PMU_READ_NVRAM 0x3b /* read non-volatile RAM */
	21	#define PMU_SET_RTC 0x30 /* set real-time clock */
	22	#define PMU_READ_RTC 0x38 /* read real-time clock */
	23	#define PMU_SET_VOLBUTTON 0x40 /* set volume up/down position */
	24	#define PMU_BACKLIGHT_BRIGHT 0x41 /* set backlight brightness */
	25	#define PMU_GET_VOLBUTTON 0x48 /* get volume up/down position */
	26	#define PMU_PCEJECT 0x4c /* eject PC-card from slot */
	27	#define PMU_BATTERY_STATE 0x6b /* report battery state etc. */
	28	#define PMU_SMART_BATTERY_STATE 0x6f /* report battery state (new way) */
	29	#define PMU_SET_INTR_MASK 0x70 /* set PMU interrupt mask */
	30	#define PMU_INT_ACK 0x78 /* read interrupt bits */
	31	#define PMU_SHUTDOWN 0x7e /* turn power off */
	32	#define PMU_CPU_SPEED 0x7d /* control CPU speed on some models */
	33	#define PMU_SLEEP 0x7f /* put CPU to sleep */
	34	#define PMU_POWER_EVENTS 0x8f /* Send power-event commands to PMU */
	35	#define PMU_I2C_CMD 0x9a /* I2C operations */
	36	#define PMU_RESET 0xd0 /* reset CPU */
	37	#define PMU_GET_BRIGHTBUTTON 0xd9 /* report brightness up/down pos */
	38	#define PMU_GET_COVER 0xdc /* report cover open/closed */
	39	#define PMU_SYSTEM_READY 0xdf /* tell PMU we are awake */
	40	#define PMU_GET_VERSION 0xea /* read the PMU version */
	41
	42	/* Bits to use with the PMU_POWER_CTRL0 command */
	43	#define PMU_POW0_ON 0x80 /* OR this to power ON the device */
	44	#define PMU_POW0_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
	45	#define PMU_POW0_HARD_DRIVE 0x04 /* Hard drive power (on wallstreet/lombard ?) */
	46
	47	/* Bits to use with the PMU_POWER_CTRL command */
	48	#define PMU_POW_ON 0x80 /* OR this to power ON the device */
	49	#define PMU_POW_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
	50	#define PMU_POW_BACKLIGHT 0x01 /* backlight power */
	51	#define PMU_POW_CHARGER 0x02 /* battery charger power */
	52	#define PMU_POW_IRLED 0x04 /* IR led power (on wallstreet) */
	53	#define PMU_POW_MEDIABAY 0x08 /* media bay power (wallstreet/lombard ?) */
	54
	55	/* Bits in PMU interrupt and interrupt mask bytes */
	56	#define PMU_INT_PCEJECT 0x04 /* PC-card eject buttons */
	57	#define PMU_INT_SNDBRT 0x08 /* sound/brightness up/down buttons */
	58	#define PMU_INT_ADB 0x10 /* ADB autopoll or reply data */
	59	#define PMU_INT_BATTERY 0x20 /* Battery state change */
	60	#define PMU_INT_ENVIRONMENT 0x40 /* Environment interrupts */
	61	#define PMU_INT_TICK 0x80 /* 1-second tick interrupt */
	62
	63	/* Other bits in PMU interrupt valid when PMU_INT_ADB is set */
	64	#define PMU_INT_ADB_AUTO 0x04 /* ADB autopoll, when PMU_INT_ADB */
	65	#define PMU_INT_WAITING_CHARGER 0x01 /* ??? */
	66	#define PMU_INT_AUTO_SRQ_POLL 0x02 /* ??? */
	67
	68	/* Bits in the environement message (either obtained via PMU_GET_COVER,
	69	* or via PMU_INT_ENVIRONMENT on core99 */
	70	#define PMU_ENV_LID_CLOSED 0x01 /* The lid is closed */
	71
	72	/* I2C related definitions */
73	#define PMU_I2C_MODE_SIMPLE 0
74	#define PMU_I2C_MODE_STDSUB 1
75	#define PMU_I2C_MODE_COMBINED 2
76
77	#define PMU_I2C_BUS_STATUS 0
78	#define PMU_I2C_BUS_SYSCLK 1
79	#define PMU_I2C_BUS_POWER 2
80
81	#define PMU_I2C_STATUS_OK 0
82	#define PMU_I2C_STATUS_DATAREAD 1
83	#define PMU_I2C_STATUS_BUSY 0xfe
84
85
86	/* Kind of PMU (model) */
87	enum {
88	PMU_UNKNOWN,
89	PMU_OHARE_BASED, /* 2400, 3400, 3500 (old G3 powerbook) */
90	PMU_HEATHROW_BASED, /* PowerBook G3 series */
91	PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */
92	PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */
93	PMU_68K_V1, /* 68K PMU, version 1 */
94	PMU_68K_V2, /* 68K PMU, version 2 */
95	};
96
97	/* PMU PMU_POWER_EVENTS commands */
98	enum {
99	PMU_PWR_GET_POWERUP_EVENTS = 0x00,
100	PMU_PWR_SET_POWERUP_EVENTS = 0x01,
101	PMU_PWR_CLR_POWERUP_EVENTS = 0x02,
102	PMU_PWR_GET_WAKEUP_EVENTS = 0x03,
103	PMU_PWR_SET_WAKEUP_EVENTS = 0x04,
104	PMU_PWR_CLR_WAKEUP_EVENTS = 0x05,
105	};
106
107	/* Power events wakeup bits */
108	enum {
109	PMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */
110	PMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */
111	PMU_PWR_WAKEUP_AC_CHANGE = 0x04,
112	PMU_PWR_WAKEUP_LID_OPEN = 0x08,
113	PMU_PWR_WAKEUP_RING = 0x10,
114	};
115
116	/*
117	* Ioctl commands for the /dev/pmu device
118	*/
119	#include <linux/ioctl.h>
120
121	/* no param */
122	#define PMU_IOC_SLEEP _IO('B', 0)
123	/* out param: u32* backlight value: 0 to 15 */
124	#define PMU_IOC_GET_BACKLIGHT _IOR('B', 1, size_t)
125	/* in param: u32 backlight value: 0 to 15 */
126	#define PMU_IOC_SET_BACKLIGHT _IOW('B', 2, size_t)
127	/* out param: u32* PMU model */
128	#define PMU_IOC_GET_MODEL _IOR('B', 3, size_t)
129	/* out param: u32* has_adb: 0 or 1 */
130	#define PMU_IOC_HAS_ADB _IOR('B', 4, size_t)
131	/* out param: u32* can_sleep: 0 or 1 */
132	#define PMU_IOC_CAN_SLEEP _IOR('B', 5, size_t)
133	/* no param, but historically was _IOR('B', 6, 0), meaning 4 bytes */
134	#define PMU_IOC_GRAB_BACKLIGHT _IOR('B', 6, size_t)
135
136	#ifdef __KERNEL__
137
138	extern int find_via_pmu(void);
139
140	extern int pmu_request(struct adb_request *req,
141	void (done)(struct adb_request ), int nbytes, ...);
730745a5	142	extern int pmu_queue_request(struct adb_request *req);
1da177e4 LT	143	extern void pmu_poll(void);
	144	extern void pmu_poll_adb(void); /* For use by xmon */
	145	extern void pmu_wait_complete(struct adb_request *req);
	146
	147	/* For use before switching interrupts off for a long time;
	148	* warning: not stackable
	149	*/
a99d9a6e	150	#if defined(CONFIG_ADB_PMU)
1da177e4 LT	151	extern void pmu_suspend(void);
1da177e4 LT	152	extern void pmu_resume(void);
a99d9a6e TB	153	#else
	154	static inline void pmu_suspend(void)
	155	{}
	156	static inline void pmu_resume(void)
	157	{}
	158	#endif
1da177e4 LT	159
	160	extern void pmu_enable_irled(int on);
	161
	162	extern void pmu_restart(void);
	163	extern void pmu_shutdown(void);
	164	extern void pmu_unlock(void);
	165
	166	extern int pmu_present(void);
	167	extern int pmu_get_model(void);
	168
0094f2cd BH	169	extern void pmu_backlight_set_sleep(int sleep);
0094f2cd BH	170
1da177e4 LT	171	#define PMU_MAX_BATTERIES 2
	172
	173	/* values for pmu_power_flags */
	174	#define PMU_PWR_AC_PRESENT 0x00000001
	175
	176	/* values for pmu_battery_info.flags */
	177	#define PMU_BATT_PRESENT 0x00000001
	178	#define PMU_BATT_CHARGING 0x00000002
	179	#define PMU_BATT_TYPE_MASK 0x000000f0
	180	#define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */
	181	#define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */
	182	#define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */
	183
	184	struct pmu_battery_info
	185	{
	186	unsigned int flags;
	187	unsigned int charge; /* current charge */
	188	unsigned int max_charge; /* maximum charge */
	189	signed int amperage; /* current, positive if charging */
	190	unsigned int voltage; /* voltage */
	191	unsigned int time_remaining; /* remaining time */
	192	};
	193
	194	extern int pmu_battery_count;
	195	extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
	196	extern unsigned int pmu_power_flags;
	197
5474c120	198	/* Backlight */
4b755999	199	extern void pmu_backlight_init(void);
5474c120	200
f596575e	201	/* some code needs to know if the PMU was suspended for hibernation */
07c941d0	202	#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
f596575e JB	203	extern int pmu_sys_suspended;
	204	#else
	205	/* if power management is not configured it can't be suspended */
	206	#define pmu_sys_suspended 0
	207	#endif
	208
1da177e4	209	#endif /* __KERNEL__ */