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 #define PMU_DRIVER_VERSION 2
12
13 /*
14 * PMU commands
15 */
16 #define PMU_POWER_CTRL0 0x10 /* control power of some devices */
17 #define PMU_POWER_CTRL 0x11 /* control power of some devices */
18 #define PMU_ADB_CMD 0x20 /* send ADB packet */
19 #define PMU_ADB_POLL_OFF 0x21 /* disable ADB auto-poll */
20 #define PMU_WRITE_NVRAM 0x33 /* write non-volatile RAM */
21 #define PMU_READ_NVRAM 0x3b /* read non-volatile RAM */
22 #define PMU_SET_RTC 0x30 /* set real-time clock */
23 #define PMU_READ_RTC 0x38 /* read real-time clock */
24 #define PMU_SET_VOLBUTTON 0x40 /* set volume up/down position */
25 #define PMU_BACKLIGHT_BRIGHT 0x41 /* set backlight brightness */
26 #define PMU_GET_VOLBUTTON 0x48 /* get volume up/down position */
27 #define PMU_PCEJECT 0x4c /* eject PC-card from slot */
28 #define PMU_BATTERY_STATE 0x6b /* report battery state etc. */
29 #define PMU_SMART_BATTERY_STATE 0x6f /* report battery state (new way) */
30 #define PMU_SET_INTR_MASK 0x70 /* set PMU interrupt mask */
31 #define PMU_INT_ACK 0x78 /* read interrupt bits */
32 #define PMU_SHUTDOWN 0x7e /* turn power off */
33 #define PMU_CPU_SPEED 0x7d /* control CPU speed on some models */
34 #define PMU_SLEEP 0x7f /* put CPU to sleep */
35 #define PMU_POWER_EVENTS 0x8f /* Send power-event commands to PMU */
36 #define PMU_I2C_CMD 0x9a /* I2C operations */
37 #define PMU_RESET 0xd0 /* reset CPU */
38 #define PMU_GET_BRIGHTBUTTON 0xd9 /* report brightness up/down pos */
39 #define PMU_GET_COVER 0xdc /* report cover open/closed */
40 #define PMU_SYSTEM_READY 0xdf /* tell PMU we are awake */
41 #define PMU_GET_VERSION 0xea /* read the PMU version */
42
43 /* Bits to use with the PMU_POWER_CTRL0 command */
44 #define PMU_POW0_ON 0x80 /* OR this to power ON the device */
45 #define PMU_POW0_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
46 #define PMU_POW0_HARD_DRIVE 0x04 /* Hard drive power (on wallstreet/lombard ?) */
47
48 /* Bits to use with the PMU_POWER_CTRL command */
49 #define PMU_POW_ON 0x80 /* OR this to power ON the device */
50 #define PMU_POW_OFF 0x00 /* leave bit 7 to 0 to power it OFF */
51 #define PMU_POW_BACKLIGHT 0x01 /* backlight power */
52 #define PMU_POW_CHARGER 0x02 /* battery charger power */
53 #define PMU_POW_IRLED 0x04 /* IR led power (on wallstreet) */
54 #define PMU_POW_MEDIABAY 0x08 /* media bay power (wallstreet/lombard ?) */
55
56 /* Bits in PMU interrupt and interrupt mask bytes */
57 #define PMU_INT_PCEJECT 0x04 /* PC-card eject buttons */
58 #define PMU_INT_SNDBRT 0x08 /* sound/brightness up/down buttons */
59 #define PMU_INT_ADB 0x10 /* ADB autopoll or reply data */
60 #define PMU_INT_BATTERY 0x20 /* Battery state change */
61 #define PMU_INT_ENVIRONMENT 0x40 /* Environment interrupts */
62 #define PMU_INT_TICK 0x80 /* 1-second tick interrupt */
63
64 /* Other bits in PMU interrupt valid when PMU_INT_ADB is set */
65 #define PMU_INT_ADB_AUTO 0x04 /* ADB autopoll, when PMU_INT_ADB */
66 #define PMU_INT_WAITING_CHARGER 0x01 /* ??? */
67 #define PMU_INT_AUTO_SRQ_POLL 0x02 /* ??? */
68
69 /* Bits in the environement message (either obtained via PMU_GET_COVER,
70 * or via PMU_INT_ENVIRONMENT on core99 */
71 #define PMU_ENV_LID_CLOSED 0x01 /* The lid is closed */
72
73 /* I2C related definitions */
74 #define PMU_I2C_MODE_SIMPLE 0
75 #define PMU_I2C_MODE_STDSUB 1
76 #define PMU_I2C_MODE_COMBINED 2
77
78 #define PMU_I2C_BUS_STATUS 0
79 #define PMU_I2C_BUS_SYSCLK 1
80 #define PMU_I2C_BUS_POWER 2
81
82 #define PMU_I2C_STATUS_OK 0
83 #define PMU_I2C_STATUS_DATAREAD 1
84 #define PMU_I2C_STATUS_BUSY 0xfe
85
86
87 /* Kind of PMU (model) */
88 enum {
89 PMU_UNKNOWN,
90 PMU_OHARE_BASED, /* 2400, 3400, 3500 (old G3 powerbook) */
91 PMU_HEATHROW_BASED, /* PowerBook G3 series */
92 PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */
93 PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */
94 PMU_68K_V1, /* 68K PMU, version 1 */
95 PMU_68K_V2, /* 68K PMU, version 2 */
96 };
97
98 /* PMU PMU_POWER_EVENTS commands */
99 enum {
100 PMU_PWR_GET_POWERUP_EVENTS = 0x00,
101 PMU_PWR_SET_POWERUP_EVENTS = 0x01,
102 PMU_PWR_CLR_POWERUP_EVENTS = 0x02,
103 PMU_PWR_GET_WAKEUP_EVENTS = 0x03,
104 PMU_PWR_SET_WAKEUP_EVENTS = 0x04,
105 PMU_PWR_CLR_WAKEUP_EVENTS = 0x05,
106 };
107
108 /* Power events wakeup bits */
109 enum {
110 PMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */
111 PMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */
112 PMU_PWR_WAKEUP_AC_CHANGE = 0x04,
113 PMU_PWR_WAKEUP_LID_OPEN = 0x08,
114 PMU_PWR_WAKEUP_RING = 0x10,
115 };
116
117 /*
118 * Ioctl commands for the /dev/pmu device
119 */
120 #include <linux/ioctl.h>
121
122 /* no param */
123 #define PMU_IOC_SLEEP _IO('B', 0)
124 /* out param: u32* backlight value: 0 to 15 */
125 #define PMU_IOC_GET_BACKLIGHT _IOR('B', 1, size_t)
126 /* in param: u32 backlight value: 0 to 15 */
127 #define PMU_IOC_SET_BACKLIGHT _IOW('B', 2, size_t)
128 /* out param: u32* PMU model */
129 #define PMU_IOC_GET_MODEL _IOR('B', 3, size_t)
130 /* out param: u32* has_adb: 0 or 1 */
131 #define PMU_IOC_HAS_ADB _IOR('B', 4, size_t)
132 /* out param: u32* can_sleep: 0 or 1 */
133 #define PMU_IOC_CAN_SLEEP _IOR('B', 5, size_t)
134 /* no param, but historically was _IOR('B', 6, 0), meaning 4 bytes */
135 #define PMU_IOC_GRAB_BACKLIGHT _IOR('B', 6, size_t)
136
137 #ifdef __KERNEL__
138
139 extern int find_via_pmu(void);
140
141 extern int pmu_request(struct adb_request *req,
142 void (*done)(struct adb_request *), int nbytes, ...);
143
144 extern void pmu_poll(void);
145 extern void pmu_poll_adb(void); /* For use by xmon */
146 extern void pmu_wait_complete(struct adb_request *req);
147
148 /* For use before switching interrupts off for a long time;
149 * warning: not stackable
150 */
151 extern void pmu_suspend(void);
152 extern void pmu_resume(void);
153
154 extern void pmu_enable_irled(int on);
155
156 extern void pmu_restart(void);
157 extern void pmu_shutdown(void);
158 extern void pmu_unlock(void);
159
160 extern int pmu_present(void);
161 extern int pmu_get_model(void);
162
163 extern int pmu_i2c_combined_read(int bus, int addr, int subaddr, u8* data, int len);
164 extern int pmu_i2c_stdsub_write(int bus, int addr, int subaddr, u8* data, int len);
165 extern int pmu_i2c_simple_read(int bus, int addr, u8* data, int len);
166 extern int pmu_i2c_simple_write(int bus, int addr, u8* data, int len);
167
168
169 #ifdef CONFIG_PMAC_PBOOK
170 /*
171 * Stuff for putting the powerbook to sleep and waking it again.
172 *
173 */
174 #include <linux/list.h>
175
176 struct pmu_sleep_notifier
177 {
178 int (*notifier_call)(struct pmu_sleep_notifier *self, int when);
179 int priority;
180 struct list_head list;
181 };
182
183 /* Code values for calling sleep/wakeup handlers
184 *
185 * Note: If a sleep request got cancelled, all drivers will get
186 * the PBOOK_SLEEP_REJECT, even those who didn't get the PBOOK_SLEEP_REQUEST.
187 */
188 #define PBOOK_SLEEP_REQUEST 1
189 #define PBOOK_SLEEP_NOW 2
190 #define PBOOK_SLEEP_REJECT 3
191 #define PBOOK_WAKE 4
192
193 /* Result codes returned by the notifiers */
194 #define PBOOK_SLEEP_OK 0
195 #define PBOOK_SLEEP_REFUSE -1
196
197 /* priority levels in notifiers */
198 #define SLEEP_LEVEL_VIDEO 100 /* Video driver (first wake) */
199 #define SLEEP_LEVEL_MEDIABAY 90 /* Media bay driver */
200 #define SLEEP_LEVEL_BLOCK 80 /* IDE, SCSI */
201 #define SLEEP_LEVEL_NET 70 /* bmac, gmac */
202 #define SLEEP_LEVEL_MISC 60 /* Anything else */
203 #define SLEEP_LEVEL_USERLAND 55 /* Reserved for apm_emu */
204 #define SLEEP_LEVEL_ADB 50 /* ADB (async) */
205 #define SLEEP_LEVEL_SOUND 40 /* Sound driver (blocking) */
206
207 /* special register notifier functions */
208 int pmu_register_sleep_notifier(struct pmu_sleep_notifier* notifier);
209 int pmu_unregister_sleep_notifier(struct pmu_sleep_notifier* notifier);
210
211 #define PMU_MAX_BATTERIES 2
212
213 /* values for pmu_power_flags */
214 #define PMU_PWR_AC_PRESENT 0x00000001
215
216 /* values for pmu_battery_info.flags */
217 #define PMU_BATT_PRESENT 0x00000001
218 #define PMU_BATT_CHARGING 0x00000002
219 #define PMU_BATT_TYPE_MASK 0x000000f0
220 #define PMU_BATT_TYPE_SMART 0x00000010 /* Smart battery */
221 #define PMU_BATT_TYPE_HOOPER 0x00000020 /* 3400/3500 */
222 #define PMU_BATT_TYPE_COMET 0x00000030 /* 2400 */
223
224 struct pmu_battery_info
225 {
226 unsigned int flags;
227 unsigned int charge; /* current charge */
228 unsigned int max_charge; /* maximum charge */
229 signed int amperage; /* current, positive if charging */
230 unsigned int voltage; /* voltage */
231 unsigned int time_remaining; /* remaining time */
232 };
233
234 extern int pmu_battery_count;
235 extern struct pmu_battery_info pmu_batteries[PMU_MAX_BATTERIES];
236 extern unsigned int pmu_power_flags;
237
238 #endif /* CONFIG_PMAC_PBOOK */
239
240 #endif /* __KERNEL__ */
241
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