aboutsummaryrefslogtreecommitdiff
path: root/include/linux/pmu.h
blob: 84e6a55a1202d2d9b4db2e3dbb1f448ef78aab54 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
/*
 * 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.
 */

#ifndef _LINUX_PMU_H
#define _LINUX_PMU_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 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__ */

#endif /* _LINUX_PMU_H */