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001: /*
002:  * Definitions for talking to the PMU.  The PMU is a microcontroller
003:  * which controls battery charging and system power on PowerBook 3400
004:  * and 2400 models as well as the RTC and various other things.
005:  *
006:  * Copyright (C) 1998 Paul Mackerras.
007:  */
008: 
009: 
010: #define PMU_DRIVER_VERSION      2
011: 
012: /*
013:  * PMU commands
014:  */
015: #define PMU_POWER_CTRL0         0x10    /* control power of some devices */
016: #define PMU_POWER_CTRL          0x11    /* control power of some devices */
017: #define PMU_ADB_CMD             0x20    /* send ADB packet */
018: #define PMU_ADB_POLL_OFF        0x21    /* disable ADB auto-poll */
019: #define PMU_WRITE_NVRAM         0x33    /* write non-volatile RAM */
020: #define PMU_READ_NVRAM          0x3b    /* read non-volatile RAM */
021: #define PMU_SET_RTC             0x30    /* set real-time clock */
022: #define PMU_READ_RTC            0x38    /* read real-time clock */
023: #define PMU_SET_VOLBUTTON       0x40    /* set volume up/down position */
024: #define PMU_BACKLIGHT_BRIGHT    0x41    /* set backlight brightness */
025: #define PMU_GET_VOLBUTTON       0x48    /* get volume up/down position */
026: #define PMU_PCEJECT             0x4c    /* eject PC-card from slot */
027: #define PMU_BATTERY_STATE       0x6b    /* report battery state etc. */
028: #define PMU_SMART_BATTERY_STATE 0x6f    /* report battery state (new way) */
029: #define PMU_SET_INTR_MASK       0x70    /* set PMU interrupt mask */
030: #define PMU_INT_ACK             0x78    /* read interrupt bits */
031: #define PMU_SHUTDOWN            0x7e    /* turn power off */
032: #define PMU_CPU_SPEED           0x7d    /* control CPU speed on some models */
033: #define PMU_SLEEP               0x7f    /* put CPU to sleep */
034: #define PMU_POWER_EVENTS        0x8f    /* Send power-event commands to PMU */
035: #define PMU_I2C_CMD             0x9a    /* I2C operations */
036: #define PMU_RESET               0xd0    /* reset CPU */
037: #define PMU_GET_BRIGHTBUTTON    0xd9    /* report brightness up/down pos */
038: #define PMU_GET_COVER           0xdc    /* report cover open/closed */
039: #define PMU_SYSTEM_READY        0xdf    /* tell PMU we are awake */
040: #define PMU_GET_VERSION         0xea    /* read the PMU version */
041: 
042: /* Bits to use with the PMU_POWER_CTRL0 command */
043: #define PMU_POW0_ON             0x80    /* OR this to power ON the device */
044: #define PMU_POW0_OFF            0x00    /* leave bit 7 to 0 to power it OFF */
045: #define PMU_POW0_HARD_DRIVE     0x04    /* Hard drive power (on wallstreet/lombard ?) */
046: 
047: /* Bits to use with the PMU_POWER_CTRL command */
048: #define PMU_POW_ON              0x80    /* OR this to power ON the device */
049: #define PMU_POW_OFF             0x00    /* leave bit 7 to 0 to power it OFF */
050: #define PMU_POW_BACKLIGHT       0x01    /* backlight power */
051: #define PMU_POW_CHARGER         0x02    /* battery charger power */
052: #define PMU_POW_IRLED           0x04    /* IR led power (on wallstreet) */
053: #define PMU_POW_MEDIABAY        0x08    /* media bay power (wallstreet/lombard ?) */
054: 
055: /* Bits in PMU interrupt and interrupt mask bytes */
056: #define PMU_INT_PCEJECT         0x04    /* PC-card eject buttons */
057: #define PMU_INT_SNDBRT          0x08    /* sound/brightness up/down buttons */
058: #define PMU_INT_ADB             0x10    /* ADB autopoll or reply data */
059: #define PMU_INT_BATTERY         0x20    /* Battery state change */
060: #define PMU_INT_ENVIRONMENT     0x40    /* Environment interrupts */
061: #define PMU_INT_TICK            0x80    /* 1-second tick interrupt */
062: 
063: /* Other bits in PMU interrupt valid when PMU_INT_ADB is set */
064: #define PMU_INT_ADB_AUTO        0x04    /* ADB autopoll, when PMU_INT_ADB */
065: #define PMU_INT_WAITING_CHARGER 0x01    /* ??? */
066: #define PMU_INT_AUTO_SRQ_POLL   0x02    /* ??? */
067: 
068: /* Bits in the environement message (either obtained via PMU_GET_COVER,
069:  * or via PMU_INT_ENVIRONMENT on core99 */
070: #define PMU_ENV_LID_CLOSED      0x01    /* The lid is closed */
071: 
072: /* I2C related definitions */
073: #define PMU_I2C_MODE_SIMPLE     0
074: #define PMU_I2C_MODE_STDSUB     1
075: #define PMU_I2C_MODE_COMBINED   2
076: 
077: #define PMU_I2C_BUS_STATUS      0
078: #define PMU_I2C_BUS_SYSCLK      1
079: #define PMU_I2C_BUS_POWER       2
080: 
081: #define PMU_I2C_STATUS_OK       0
082: #define PMU_I2C_STATUS_DATAREAD 1
083: #define PMU_I2C_STATUS_BUSY     0xfe
084: 
085: 
086: /* Kind of PMU (model) */
087: enum {
088:         PMU_UNKNOWN,
089:         PMU_OHARE_BASED,        /* 2400, 3400, 3500 (old G3 powerbook) */
090:         PMU_HEATHROW_BASED,     /* PowerBook G3 series */
091:         PMU_PADDINGTON_BASED,   /* 1999 PowerBook G3 */
092:         PMU_KEYLARGO_BASED,     /* Core99 motherboard (PMU99) */
093:         PMU_68K_V1,             /* 68K PMU, version 1 */
094:         PMU_68K_V2,             /* 68K PMU, version 2 */
095: };
096: 
097: /* PMU PMU_POWER_EVENTS commands */
098: enum {
099:         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 */
108: enum {
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: 

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