Commit bc625f20 authored by Michael Hanselmann's avatar Michael Hanselmann Committed by Paul Mackerras

[POWERPC] Update smu command definitions

This updates smu.h with several new commands, and adds parameter
descriptions for existing commands.
Signed-off-by: default avatarMichael Hanselmann <linux-kernel@hansmi.ch>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 430b01e8
......@@ -173,7 +173,7 @@
* Power supply control
*
* The "sub" command is an ASCII string in the data, the
* data lenght is that of the string.
* data length is that of the string.
*
* The VSLEW command can be used to get or set the voltage slewing.
* - lenght 5 (only "VSLEW") : it returns "DONE" and 3 bytes of
......@@ -201,20 +201,90 @@
*/
#define SMU_CMD_READ_ADC 0xd8
/* Misc commands
*
* This command seem to be a grab bag of various things
*
* Parameters:
* 1: subcommand
*/
#define SMU_CMD_MISC_df_COMMAND 0xdf
#define SMU_CMD_MISC_df_SET_DISPLAY_LIT 0x02 /* i: 1 byte */
/*
* Sets "system ready" status
*
* I did not yet understand how it exactly works or what it does.
*
* Guessing from OF code, 0x02 activates the display backlight. Apple uses/used
* the same codebase for all OF versions. On PowerBooks, this command would
* enable the backlight. For the G5s, it only activates the front LED. However,
* don't take this for granted.
*
* Parameters:
* 2: status [0x00, 0x01 or 0x02]
*/
#define SMU_CMD_MISC_df_SET_DISPLAY_LIT 0x02
/*
* Sets mode of power switch.
*
* What this actually does is not yet known. Maybe it enables some interrupt.
*
* Parameters:
* 2: enable power switch? [0x00 or 0x01]
* 3 (optional): enable nmi? [0x00 or 0x01]
*
* Returns:
* If parameter 2 is 0x00 and parameter 3 is not specified, returns wether
* NMI is enabled. Otherwise unknown.
*/
#define SMU_CMD_MISC_df_NMI_OPTION 0x04
/* Sets LED dimm offset.
*
* The front LED dimms itself during sleep. Its brightness (or, well, the PWM
* frequency) depends on current time. Therefore, the SMU needs to know the
* timezone.
*
* Parameters:
* 2-8: unknown (BCD coding)
*/
#define SMU_CMD_MISC_df_DIMM_OFFSET 0x99
/*
* Version info commands
*
* I haven't quite tried to figure out how these work
* Parameters:
* 1 (optional): Specifies version part to retrieve
*
* Returns:
* Version value
*/
#define SMU_CMD_VERSION_COMMAND 0xea
#define SMU_VERSION_RUNNING 0x00
#define SMU_VERSION_BASE 0x01
#define SMU_VERSION_UPDATE 0x02
/*
* Switches
*
* These are switches whose status seems to be known to the SMU.
*
* Parameters:
* none
*
* Result:
* Switch bits (ORed, see below)
*/
#define SMU_CMD_SWITCHES 0xdc
/* Switches bits */
#define SMU_SWITCH_CASE_CLOSED 0x01
#define SMU_SWITCH_AC_POWER 0x04
#define SMU_SWITCH_POWER_SWITCH 0x08
/*
......@@ -243,10 +313,64 @@
*/
#define SMU_CMD_MISC_ee_COMMAND 0xee
#define SMU_CMD_MISC_ee_GET_DATABLOCK_REC 0x02
#define SMU_CMD_MISC_ee_LEDS_CTRL 0x04 /* i: 00 (00,01) [00] */
/* Retrieves currently used watts.
*
* Parameters:
* 1: 0x03 (Meaning unknown)
*/
#define SMU_CMD_MISC_ee_GET_WATTS 0x03
#define SMU_CMD_MISC_ee_LEDS_CTRL 0x04 /* i: 00 (00,01) [00] */
#define SMU_CMD_MISC_ee_GET_DATA 0x05 /* i: 00 , o: ?? */
/*
* Power related commands
*
* Parameters:
* 1: subcommand
*/
#define SMU_CMD_POWER_EVENTS_COMMAND 0x8f
/* SMU_POWER_EVENTS subcommands */
enum {
SMU_PWR_GET_POWERUP_EVENTS = 0x00,
SMU_PWR_SET_POWERUP_EVENTS = 0x01,
SMU_PWR_CLR_POWERUP_EVENTS = 0x02,
SMU_PWR_GET_WAKEUP_EVENTS = 0x03,
SMU_PWR_SET_WAKEUP_EVENTS = 0x04,
SMU_PWR_CLR_WAKEUP_EVENTS = 0x05,
/*
* Get last shutdown cause
*
* Returns:
* 1 byte (signed char): Last shutdown cause. Exact meaning unknown.
*/
SMU_PWR_LAST_SHUTDOWN_CAUSE = 0x07,
/*
* Sets or gets server ID. Meaning or use is unknown.
*
* Parameters:
* 2 (optional): Set server ID (1 byte)
*
* Returns:
* 1 byte (server ID?)
*/
SMU_PWR_SERVER_ID = 0x08,
};
/* Power events wakeup bits */
enum {
SMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */
SMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */
SMU_PWR_WAKEUP_AC_CHANGE = 0x04,
SMU_PWR_WAKEUP_LID_OPEN = 0x08,
SMU_PWR_WAKEUP_RING = 0x10,
};
/*
* - Kernel side interface -
......
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