1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Definitions for talking to the PMU. The PMU is a microcontroller
4 * which controls battery charging and system power on PowerBook 3400
5 * and 2400 models as well as the RTC and various other things.
6 *
7 * Copyright (C) 1998 Paul Mackerras.
8 */
9 #ifndef _LINUX_PMU_H
10 #define _LINUX_PMU_H
11
12 #include <linux/rtc.h>
13 #include <uapi/linux/pmu.h>
14
15
16 extern int __init find_via_pmu(void);
17
18 extern int pmu_request(struct adb_request *req,
19 void (*done)(struct adb_request *), int nbytes, ...);
20 extern int pmu_queue_request(struct adb_request *req);
21 extern void pmu_poll(void);
22 extern void pmu_poll_adb(void); /* For use by xmon */
23 extern void pmu_wait_complete(struct adb_request *req);
24
25 /* For use before switching interrupts off for a long time;
26 * warning: not stackable
27 */
28 #if defined(CONFIG_ADB_PMU)
29 extern void pmu_suspend(void);
30 extern void pmu_resume(void);
31 #else
32 static inline void pmu_suspend(void)
33 {}
34 static inline void pmu_resume(void)
35 {}
36 #endif
37
38 extern void pmu_enable_irled(int on);
39
40 extern time64_t pmu_get_time(void);
41 extern int pmu_set_rtc_time(struct rtc_time *tm);
42
43 extern void pmu_restart(void);
44 extern void pmu_shutdown(void);
45 extern void pmu_unlock(void);
46
47 extern int pmu_present(void);
48 extern int pmu_get_model(void);
49
50 extern void pmu_backlight_set_sleep(int sleep);
51
52 #define PMU_MAX_BATTERIES 2
53
54 /* values for pmu_power_flags */
55 #define PMU_PWR_AC_PRESENT 0x00000001
56
57 /* values for pmu_battery_info.flags */
58 #define PMU_BATT_PRESENT 0x00000001
59 #define PMU_BATT_CHARGING 0x00000002
60 #define PMU_BATT_TYPE_MASK 0x000000f0
61 #define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */
62 #define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */
63 #define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */
64
65 struct pmu_battery_info
66 {
67 unsigned int flags;
68 unsigned int charge; /* current charge */
69 unsigned int max_charge; /* maximum charge */
70 signed int amperage; /* current, positive if charging */
71 unsigned int voltage; /* voltage */
72 unsigned int time_remaining; /* remaining time */
73 };
74
75 extern int pmu_battery_count;
76 extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
77 extern unsigned int pmu_power_flags;
78
79 /* Backlight */
80 extern void pmu_backlight_init(void);
81
82 /* some code needs to know if the PMU was suspended for hibernation */
83 #if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
84 extern int pmu_sys_suspended;
85 #else
86 /* if power management is not configured it can't be suspended */
87 #define pmu_sys_suspended 0
88 #endif
89
90 #endif /* _LINUX_PMU_H */
91
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