From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hansmi.home.forkbomb.ch (hansmi.home.forkbomb.ch [213.144.146.165]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "hansmi.home.forkbomb.ch", Issuer "hansmi.home.forkbomb.ch" (not verified)) by ozlabs.org (Postfix) with ESMTP id B6D16DDDF6 for ; Sat, 6 Jan 2007 13:42:56 +1100 (EST) Date: Sat, 6 Jan 2007 03:42:42 +0100 From: Michael Hanselmann To: Benjamin Herrenschmidt Subject: Re: [PATCH] More SMU commands Message-ID: <20070106024242.GA18395@hansmi.ch> References: <20061224130531.GA28635@hansmi.ch> <1167082402.3522.8.camel@localhost.localdomain> <20070105001014.GA28410@hansmi.ch> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="CE+1k2dSO48ffgeK" In-Reply-To: <20070105001014.GA28410@hansmi.ch> Cc: linuxppc-dev@ozlabs.org, linux-kernel@killerfox.forkbomb.ch List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --CE+1k2dSO48ffgeK Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jan 05, 2007 at 01:10:14AM +0100, Michael Hanselmann wrote: > New patch below. Is this one better? Unfortuntely, there was a naming conflict. Here's a better patch with even more comments. Signed-off-by: Michael Hanselmann --- --- linux-2.6.19.1.orig/include/asm-powerpc/smu.h 2006-12-24 12:19:07.00000= 0000 +0100 +++ linux-2.6.19.1/include/asm-powerpc/smu.h 2007-01-06 03:32:23.000000000 = +0100 @@ -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 =20 + /* 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. How= ever, + * 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 interru= pt. + * + * 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 weth= er + * NMI is enabled. Otherwise unknown. + */ #define SMU_CMD_MISC_df_NMI_OPTION 0x04 =20 +/* 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 =20 =20 /* @@ -243,10 +313,99 @@ */ #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: ?? */ =20 =20 +/* + * Power related commands + * + * Parameters: + * 1: subcommand + */ +#define SMU_CMD_POWER_EVENTS_COMMAND 0x8f + +/* + * Enables file server mode + * + * Meaning or use is unknown. Maybe this allows the machine to power up af= ter + * AC loss. + * + * Parameters: + * 2: always 0x00, meaning unknown + * 3: always 0x02, meaning unknown + * + * Returns: + * 2 bytes + */ +#define SMU_CMD_POWER_EVENTS_SET_FILESERVER_MODE 0x01 + +/* + * Disables file server mode + * + * Parameters: + * 2: always 0xff, meaning unknown + * 3: always 0xff, meaning unknown + * + * Returns: + * 2 bytes + */ +#define SMU_CMD_POWER_EVENTS_CLR_FILESERVER_MODE 0x02 + +/* + * Unknown meaning. Used during sleep preparation. + * + * Parameters: + * 2: unknown + * 3: unknown + * + * Returns: + * 2 bytes + */ +#define SMU_CMD_POWER_EVENTS_UNKNOWN_04 0x04 + +/* + * Unknown meaning. Used during sleep preparation. + * + * Parameters: + * 2: 0xff, meaning unknown + * 3: 0xff, meaning unknown + * + * Returns: + * 2 bytes + */ +#define SMU_CMD_POWER_EVENTS_UNKNOWN_05 0x05 + +/* + * Get last shutdown cause + * + * Parameters: + * none + * + * Returns: + * 1 byte (signed char): Last shutdown cause. Exact meaning unknown. + */ +#define SMU_CMD_POWER_EVENTS_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?) + */ +#define SMU_CMD_POWER_EVENTS_SERVER_ID 0x08 + =20 /* * - Kernel side interface - --CE+1k2dSO48ffgeK Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFFnwyi6J0saEpRu+oRAlCoAKCQd1gjc3lufM798BD3YV2kpVMBXgCcCPwN yXlujlHmywpfotIsD0OaGbA= =FSyZ -----END PGP SIGNATURE----- --CE+1k2dSO48ffgeK--