Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
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) */
87enum {
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 */
98enum {
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 */
108enum {
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
138extern int find_via_pmu(void);
139
140extern int pmu_request(struct adb_request *req,
141 void (*done)(struct adb_request *), int nbytes, ...);
142extern int pmu_queue_request(struct adb_request *req);
143extern void pmu_poll(void);
144extern void pmu_poll_adb(void); /* For use by xmon */
145extern 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 */
150extern void pmu_suspend(void);
151extern void pmu_resume(void);
152
153extern void pmu_enable_irled(int on);
154
155extern void pmu_restart(void);
156extern void pmu_shutdown(void);
157extern void pmu_unlock(void);
158
159extern int pmu_present(void);
160extern int pmu_get_model(void);
161
162#ifdef CONFIG_PM
163/*
164 * Stuff for putting the powerbook to sleep and waking it again.
165 *
166 */
167#include <linux/list.h>
168
169struct pmu_sleep_notifier
170{
171 int (*notifier_call)(struct pmu_sleep_notifier *self, int when);
172 int priority;
173 struct list_head list;
174};
175
176/* Code values for calling sleep/wakeup handlers
177 *
178 * Note: If a sleep request got cancelled, all drivers will get
179 * the PBOOK_SLEEP_REJECT, even those who didn't get the PBOOK_SLEEP_REQUEST.
180 */
181#define PBOOK_SLEEP_REQUEST 1
182#define PBOOK_SLEEP_NOW 2
183#define PBOOK_SLEEP_REJECT 3
184#define PBOOK_WAKE 4
185
186/* Result codes returned by the notifiers */
187#define PBOOK_SLEEP_OK 0
188#define PBOOK_SLEEP_REFUSE -1
189
190/* priority levels in notifiers */
191#define SLEEP_LEVEL_VIDEO 100 /* Video driver (first wake) */
192#define SLEEP_LEVEL_MEDIABAY 90 /* Media bay driver */
193#define SLEEP_LEVEL_BLOCK 80 /* IDE, SCSI */
194#define SLEEP_LEVEL_NET 70 /* bmac, gmac */
195#define SLEEP_LEVEL_MISC 60 /* Anything else */
196#define SLEEP_LEVEL_USERLAND 55 /* Reserved for apm_emu */
197#define SLEEP_LEVEL_ADB 50 /* ADB (async) */
198#define SLEEP_LEVEL_SOUND 40 /* Sound driver (blocking) */
199
200/* special register notifier functions */
201int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier);
202int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier);
203
204#endif /* CONFIG_PM */
205
206#define PMU_MAX_BATTERIES 2
207
208/* values for pmu_power_flags */
209#define PMU_PWR_AC_PRESENT 0x00000001
210
211/* values for pmu_battery_info.flags */
212#define PMU_BATT_PRESENT 0x00000001
213#define PMU_BATT_CHARGING 0x00000002
214#define PMU_BATT_TYPE_MASK 0x000000f0
215#define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */
216#define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */
217#define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */
218
219struct pmu_battery_info
220{
221 unsigned int flags;
222 unsigned int charge; /* current charge */
223 unsigned int max_charge; /* maximum charge */
224 signed int amperage; /* current, positive if charging */
225 unsigned int voltage; /* voltage */
226 unsigned int time_remaining; /* remaining time */
227};
228
229extern int pmu_battery_count;
230extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
231extern unsigned int pmu_power_flags;
232
233/* Backlight */
234extern void pmu_backlight_init(void);
235
236#endif /* __KERNEL__ */