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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 #ifndef _LINUX_PMU_H
9 #define _LINUX_PMU_H
10 
11 #include <uapi/linux/pmu.h>
12 
13 
14 extern int find_via_pmu(void);
15 
16 extern int pmu_request(struct adb_request *req,
17 		void (*done)(struct adb_request *), int nbytes, ...);
18 extern int pmu_queue_request(struct adb_request *req);
19 extern void pmu_poll(void);
20 extern void pmu_poll_adb(void); /* For use by xmon */
21 extern void pmu_wait_complete(struct adb_request *req);
22 
23 /* For use before switching interrupts off for a long time;
24  * warning: not stackable
25  */
26 #if defined(CONFIG_ADB_PMU)
27 extern void pmu_suspend(void);
28 extern void pmu_resume(void);
29 #else
pmu_suspend(void)30 static inline void pmu_suspend(void)
31 {}
pmu_resume(void)32 static inline void pmu_resume(void)
33 {}
34 #endif
35 
36 extern void pmu_enable_irled(int on);
37 
38 extern void pmu_restart(void);
39 extern void pmu_shutdown(void);
40 extern void pmu_unlock(void);
41 
42 extern int pmu_present(void);
43 extern int pmu_get_model(void);
44 
45 extern void pmu_backlight_set_sleep(int sleep);
46 
47 #define PMU_MAX_BATTERIES	2
48 
49 /* values for pmu_power_flags */
50 #define PMU_PWR_AC_PRESENT	0x00000001
51 
52 /* values for pmu_battery_info.flags */
53 #define PMU_BATT_PRESENT	0x00000001
54 #define PMU_BATT_CHARGING	0x00000002
55 #define PMU_BATT_TYPE_MASK	0x000000f0
56 #define PMU_BATT_TYPE_SMART	0x00000010 /* Smart battery */
57 #define PMU_BATT_TYPE_HOOPER	0x00000020 /* 3400/3500 */
58 #define PMU_BATT_TYPE_COMET	0x00000030 /* 2400 */
59 
60 struct pmu_battery_info
61 {
62 	unsigned int	flags;
63 	unsigned int	charge;		/* current charge */
64 	unsigned int	max_charge;	/* maximum charge */
65 	signed int	amperage;	/* current, positive if charging */
66 	unsigned int	voltage;	/* voltage */
67 	unsigned int	time_remaining;	/* remaining time */
68 };
69 
70 extern int pmu_battery_count;
71 extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
72 extern unsigned int pmu_power_flags;
73 
74 /* Backlight */
75 extern void pmu_backlight_init(void);
76 
77 /* some code needs to know if the PMU was suspended for hibernation */
78 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
79 extern int pmu_sys_suspended;
80 #else
81 /* if power management is not configured it can't be suspended */
82 #define pmu_sys_suspended	0
83 #endif
84 
85 #endif /* _LINUX_PMU_H */
86