[POWERPC] Update smu command definitions
This updates smu.h with several new commands, and adds parameter descriptions for existing commands. Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
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Michael Hanselmann
Paul Mackerras
Родитель
430b01e8f5
Коммит
bc625f20c0
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@ -173,7 +173,7 @@
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* Power supply control
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*
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* The "sub" command is an ASCII string in the data, the
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* data lenght is that of the string.
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* data length is that of the string.
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*
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* The VSLEW command can be used to get or set the voltage slewing.
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* - lenght 5 (only "VSLEW") : it returns "DONE" and 3 bytes of
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@ -201,20 +201,90 @@
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*/
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#define SMU_CMD_READ_ADC 0xd8
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/* Misc commands
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*
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* This command seem to be a grab bag of various things
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*
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* Parameters:
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* 1: subcommand
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*/
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#define SMU_CMD_MISC_df_COMMAND 0xdf
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#define SMU_CMD_MISC_df_SET_DISPLAY_LIT 0x02 /* i: 1 byte */
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/*
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* Sets "system ready" status
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*
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* I did not yet understand how it exactly works or what it does.
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*
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* Guessing from OF code, 0x02 activates the display backlight. Apple uses/used
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* the same codebase for all OF versions. On PowerBooks, this command would
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* enable the backlight. For the G5s, it only activates the front LED. However,
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* don't take this for granted.
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*
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* Parameters:
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* 2: status [0x00, 0x01 or 0x02]
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*/
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#define SMU_CMD_MISC_df_SET_DISPLAY_LIT 0x02
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/*
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* Sets mode of power switch.
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*
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* What this actually does is not yet known. Maybe it enables some interrupt.
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*
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* Parameters:
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* 2: enable power switch? [0x00 or 0x01]
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* 3 (optional): enable nmi? [0x00 or 0x01]
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*
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* Returns:
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* If parameter 2 is 0x00 and parameter 3 is not specified, returns wether
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* NMI is enabled. Otherwise unknown.
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*/
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#define SMU_CMD_MISC_df_NMI_OPTION 0x04
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/* Sets LED dimm offset.
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*
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* The front LED dimms itself during sleep. Its brightness (or, well, the PWM
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* frequency) depends on current time. Therefore, the SMU needs to know the
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* timezone.
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*
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* Parameters:
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* 2-8: unknown (BCD coding)
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*/
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#define SMU_CMD_MISC_df_DIMM_OFFSET 0x99
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/*
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* Version info commands
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*
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* I haven't quite tried to figure out how these work
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* Parameters:
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* 1 (optional): Specifies version part to retrieve
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*
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* Returns:
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* Version value
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*/
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#define SMU_CMD_VERSION_COMMAND 0xea
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#define SMU_VERSION_RUNNING 0x00
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#define SMU_VERSION_BASE 0x01
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#define SMU_VERSION_UPDATE 0x02
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/*
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* Switches
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*
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* These are switches whose status seems to be known to the SMU.
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*
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* Parameters:
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* none
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*
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* Result:
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* Switch bits (ORed, see below)
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*/
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#define SMU_CMD_SWITCHES 0xdc
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/* Switches bits */
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#define SMU_SWITCH_CASE_CLOSED 0x01
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#define SMU_SWITCH_AC_POWER 0x04
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#define SMU_SWITCH_POWER_SWITCH 0x08
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/*
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@ -243,10 +313,64 @@
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*/
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#define SMU_CMD_MISC_ee_COMMAND 0xee
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#define SMU_CMD_MISC_ee_GET_DATABLOCK_REC 0x02
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#define SMU_CMD_MISC_ee_LEDS_CTRL 0x04 /* i: 00 (00,01) [00] */
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/* Retrieves currently used watts.
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*
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* Parameters:
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* 1: 0x03 (Meaning unknown)
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*/
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#define SMU_CMD_MISC_ee_GET_WATTS 0x03
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#define SMU_CMD_MISC_ee_LEDS_CTRL 0x04 /* i: 00 (00,01) [00] */
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#define SMU_CMD_MISC_ee_GET_DATA 0x05 /* i: 00 , o: ?? */
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/*
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* Power related commands
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*
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* Parameters:
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* 1: subcommand
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*/
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#define SMU_CMD_POWER_EVENTS_COMMAND 0x8f
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/* SMU_POWER_EVENTS subcommands */
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enum {
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SMU_PWR_GET_POWERUP_EVENTS = 0x00,
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SMU_PWR_SET_POWERUP_EVENTS = 0x01,
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SMU_PWR_CLR_POWERUP_EVENTS = 0x02,
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SMU_PWR_GET_WAKEUP_EVENTS = 0x03,
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SMU_PWR_SET_WAKEUP_EVENTS = 0x04,
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SMU_PWR_CLR_WAKEUP_EVENTS = 0x05,
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/*
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* Get last shutdown cause
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*
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* Returns:
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* 1 byte (signed char): Last shutdown cause. Exact meaning unknown.
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*/
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SMU_PWR_LAST_SHUTDOWN_CAUSE = 0x07,
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/*
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* Sets or gets server ID. Meaning or use is unknown.
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*
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* Parameters:
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* 2 (optional): Set server ID (1 byte)
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*
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* Returns:
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* 1 byte (server ID?)
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*/
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SMU_PWR_SERVER_ID = 0x08,
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};
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/* Power events wakeup bits */
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enum {
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SMU_PWR_WAKEUP_KEY = 0x01, /* Wake on key press */
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SMU_PWR_WAKEUP_AC_INSERT = 0x02, /* Wake on AC adapter plug */
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SMU_PWR_WAKEUP_AC_CHANGE = 0x04,
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SMU_PWR_WAKEUP_LID_OPEN = 0x08,
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SMU_PWR_WAKEUP_RING = 0x10,
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};
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/*
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* - Kernel side interface -
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