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
9 #include <linux/config.h>
10 /*
11 * PMU commands
12 */
13 #define PMU_POWER_CTRL0 0x10 /* control power of some devices */
14 #define PMU_POWER_CTRL 0x11 /* control power of some devices */
15 #define PMU_ADB_CMD 0x20 /* send ADB packet */
16 #define PMU_ADB_POLL_OFF 0x21 /* disable ADB auto-poll */
17 #define PMU_WRITE_NVRAM 0x33 /* write non-volatile RAM */
18 #define PMU_READ_NVRAM 0x3b /* read non-volatile RAM */
19 #define PMU_SET_RTC 0x30 /* set real-time clock */
20 #define PMU_READ_RTC 0x38 /* read real-time clock */
21 #define PMU_SET_VOLBUTTON 0x40 /* set volume up/down position */
22 #define PMU_BACKLIGHT_BRIGHT 0x41 /* set backlight brightness */
23 #define PMU_GET_VOLBUTTON 0x48 /* get volume up/down position */
24 #define PMU_PCEJECT 0x4c /* eject PC-card from slot */
25 #define PMU_BATTERY_STATE 0x6b /* report battery state etc. */
26 #define PMU_SET_INTR_MASK 0x70 /* set PMU interrupt mask */
27 #define PMU_INT_ACK 0x78 /* read interrupt bits */
28 #define PMU_SHUTDOWN 0x7e /* turn power off */
29 #define PMU_SLEEP 0x7f /* put CPU to sleep */
30 #define PMU_POWER_EVENTS 0x8f /* Send power-event commands to PMU */
31 #define PMU_RESET 0xd0 /* reset CPU */
32 #define PMU_GET_BRIGHTBUTTON 0xd9 /* report brightness up/down pos */
33 #define PMU_GET_COVER 0xdc /* report cover open/closed */
34 #define PMU_SYSTEM_READY 0xdf /* tell PMU we are awake */
35
36 /* Bits to use with the PMU_POWER_CTRL0 command */
37 #define PMU_POW0_ON 0x80 /* OR this to power ON the device */
38 #define PMU_POW0_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
39 #define PMU_POW0_HARD_DRIVE 0x04 /* Hard drive power (on wallstreet/lombard ?) */
40
41 /* Bits to use with the PMU_POWER_CTRL command */
42 #define PMU_POW_ON 0x80 /* OR this to power ON the device */
43 #define PMU_POW_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
44 #define PMU_POW_BACKLIGHT 0x01 /* backlight power */
45 #define PMU_POW_CHARGER 0x02 /* battery charger power */
46 #define PMU_POW_IRLED 0x04 /* IR led power (on wallstreet) */
47 #define PMU_POW_MEDIABAY 0x08 /* media bay power (wallstreet/lombard ?) */
48
49
50 /* Bits in PMU interrupt and interrupt mask bytes */
51 #define PMU_INT_ADB_AUTO 0x04 /* ADB autopoll, when PMU_INT_ADB */
52 #define PMU_INT_PCEJECT 0x04 /* PC-card eject buttons */
53 #define PMU_INT_SNDBRT 0x08 /* sound/brightness up/down buttons */
54 #define PMU_INT_ADB 0x10 /* ADB autopoll or reply data */
55 #define PMU_INT_BATTERY 0x20
56 #define PMU_INT_WAKEUP 0x40
57 #define PMU_INT_TICK 0x80 /* 1-second tick interrupt */
58
59 /* Kind of PMU (model) */
60 enum {
61 PMU_UNKNOWN,
62 PMU_OHARE_BASED, /* 2400, 3400, 3500 (old G3 powerbook) */
63 PMU_HEATHROW_BASED, /* PowerBook G3 series */
64 PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */
65 PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */
66 };
67
68 /* PMU PMU_POWER_EVENTS commands */
69 enum {
70 PMU_PWR_GET_POWERUP_EVENTS = 0x00,
71 PMU_PWR_SET_POWERUP_EVENTS = 0x01,
72 PMU_PWR_CLR_POWERUP_EVENTS = 0x02,
73 PMU_PWR_GET_WAKEUP_EVENTS = 0x03,
74 PMU_PWR_SET_WAKEUP_EVENTS = 0x04,
75 PMU_PWR_CLR_WAKEUP_EVENTS = 0x05,
76 };
77
78 /* Power events wakeup bits */
79 enum {
80 PMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */
81 PMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */
82 PMU_PWR_WAKEUP_AC_CHANGE = 0x04,
83 PMU_PWR_WAKEUP_LID_OPEN = 0x08,
84 PMU_PWR_WAKEUP_RING = 0x10,
85 };
86
87 /*
88 * Ioctl commands for the /dev/pmu device
89 */
90 #include <linux/ioctl.h>
91
92 /* no param */
93 #define PMU_IOC_SLEEP _IO('B', 0)
94 /* out param: u32* backlight value: 0 to 15 */
95 #define PMU_IOC_GET_BACKLIGHT _IOR('B', 1, sizeof(__u32*))
96 /* in param: u32 backlight value: 0 to 15 */
97 #define PMU_IOC_SET_BACKLIGHT _IOW('B', 2, sizeof(__u32))
98 /* out param: u32* PMU model */
99 #define PMU_IOC_GET_MODEL _IOR('B', 3, sizeof(__u32*))
100 /* out param: u32* has_adb: 0 or 1 */
101 #define PMU_IOC_HAS_ADB _IOR('B', 4, sizeof(__u32*))
102
103 #ifdef __KERNEL__
104
105 extern int find_via_pmu(void);
106 extern int via_pmu_start(void);
107
108 extern int pmu_request(struct adb_request *req,
109 void (*done)(struct adb_request *), int nbytes, ...);
110
111 extern void pmu_poll(void);
112
113 /* For use before switching interrupts off for a long time;
114 * warning: not stackable
115 */
116 extern void pmu_suspend(void);
117 extern void pmu_resume(void);
118
119 extern void pmu_enable_irled(int on);
120
121 extern void pmu_restart(void);
122 extern void pmu_shutdown(void);
123
124 extern int pmu_present(void);
125 extern int pmu_get_model(void);
126
127 #ifdef CONFIG_PMAC_PBOOK
128 /*
129 * Stuff for putting the powerbook to sleep and waking it again.
130 *
131 */
132 #include <linux/list.h>
133
134 struct pmu_sleep_notifier
135 {
136 int (*notifier_call)(struct pmu_sleep_notifier *self, int when);
137 int priority;
138 struct list_head list;
139 };
140
141 /* Code values for calling sleep/wakeup handlers
142 *
143 * Note: If a sleep request got cancelled, all drivers will get
144 * the PBOOK_SLEEP_REJECT, even those who didn't get the PBOOK_SLEEP_REQUEST.
145 */
146 #define PBOOK_SLEEP_REQUEST 1
147 #define PBOOK_SLEEP_NOW 2
148 #define PBOOK_SLEEP_REJECT 3
149 #define PBOOK_WAKE 4
150
151 /* Result codes returned by the notifiers */
152 #define PBOOK_SLEEP_OK 0
153 #define PBOOK_SLEEP_REFUSE -1
154
155 /* priority levels in notifiers */
156 #define SLEEP_LEVEL_VIDEO 100 /* Video driver (first wake) */
157 #define SLEEP_LEVEL_SOUND 90 /* Sound driver */
158 #define SLEEP_LEVEL_MEDIABAY 80 /* Media bay driver */
159 #define SLEEP_LEVEL_BLOCK 70 /* IDE, SCSI */
160 #define SLEEP_LEVEL_NET 60 /* bmac */
161 #define SLEEP_LEVEL_ADB 50 /* ADB */
162 #define SLEEP_LEVEL_MISC 30 /* Anything */
163 #define SLEEP_LEVEL_LAST 0 /* Anything */
164
165 /* special register notifier functions */
166 int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier);
167 int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier);
168
169 #endif /* CONFIG_PMAC_PBOOK */
170
171
172 #endif /* __KERNEL__ */
173
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