linux-kernel - APM_CONFIG on x86

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Message-ID: <20101231193858.2c742025@janini.home>
Date:	Fri, 31 Dec 2010 19:38:58 +0200
From:	Yotam Medini <yotam.medini@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: APM_CONFIG on x86 - Is it possible?

Hello,

To an ancient target (my UMAX 530T ActionBook - plz don't laugh...)
I am trying to build a lean kernel based on 2.6.32.24 (~ Ubuntu 10.04).
Battery monitoring used to be based on /proc/apm.
I believe ACPI is not supported on this old notebook.
Now, it seems that  CONFIG_APM_POWER  cannot be set, since:

1. The configuration place for  APM_POWER  is in:
   ./drivers/power/Kconfig:25:
	config APM_POWER
		tristate "APM emulation for class batteries"
		depends on APM_EMULATION

2. The configuration place for  APM_EMULATION  is in:
    ./kernel/power/Kconfig:201:
    config APM_EMULATION
	    tristate "Advanced Power Management Emulation"
	    depends on PM && SYS_SUPPORTS_APM_EMULATION

3. But the configuration places for the latter -  
      SYS_SUPPORTS_APM_EMULATION
  - exists only in:
    ./arch/powerpc/Kconfig:185:config SYS_SUPPORTS_APM_EMULATION
    ./arch/sh/Kconfig:120:config SYS_SUPPORTS_APM_EMULATION
    ./arch/mips/Kconfig:896:config SYS_SUPPORTS_APM_EMULATION
    ./arch/arm/Kconfig:32:config SYS_SUPPORTS_APM_EMULATION
  and none under arch/x86 ! :():

So my bottom line questions are:
+ Am I missing something?
+ What is the 'right way' to configure a 2.6.3m.nn kernel
  that should support battery monitoring on such ancient laptops.

When replying, please CC: yotam DOT medini AT Gmail DOT c0m
regards -- yotam
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