linux-kernel - Re: [PATCH] Request driver inclusion

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Date:	Tue, 16 Jun 2009 15:34:53 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Peter Feuerer <peter@...e.net>
Cc:	Andreas Mohr <andi@...as.de>, Ed Tomlinson <edt@....ca>,
	Borislav Petkov <petkovbb@...glemail.com>,
	akpm@...ux-foundation.org, Len Brown <len.brown@...el.com>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Request driver inclusion - acer aspire one fan control

On Wed, 17 Jun 2009 00:14:35 +0200 Peter Feuerer wrote:

> Hi,
> 
> Andreas, I applied and reviewd your patch and additionally changed following things:
> o added "acerhdf_enable_kernelmode" which is the opposite of your "acerhdf_revert_to_bios_mode".
> o suspend stops and resume starts the kernelmode in a clean way
> o some small bugfixes (e.g. Version of the terminator bios table entry has to be "" and not 0)...
> 
> I tested the patch with current linus git. Unfortunately does the current state of the kernel freeze my a1 after suspend/resume randomly (also without acerhdf). Anyways I was able to do 11 suspend / resume cycles with acerhdf loaded and kernelmode=on.
> 
> -- 
> Peter Feuerer <peter@...e.net>
> 
> 
> Acerhdf is a driver for Acer Aspire One netbooks. It allows to access
> the temperature sensor and to control the fan.
> 
> Signed-off-by: Peter Feuerer <peter@...e.net>
> Signed-off-by: Andreas Mohr <andi@...as.de>
> Reviewed-by: Borislav Petkov <petkovbb@...il.com>
> Tested-by: Borislav Petkov <petkovbb@...il.com>
> 
> 
> diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
> index c682ac5..c768475 100644
> --- a/drivers/platform/x86/Kconfig
> +++ b/drivers/platform/x86/Kconfig
> @@ -34,6 +34,23 @@ config ACER_WMI
>  	  If you have an ACPI-WMI compatible Acer/ Wistron laptop, say Y or M
>  	  here.
>  
> +config ACERHDF
> +	tristate "Acer Aspire One temperature and fan driver"
> +	depends on THERMAL && THERMAL_HWMON

	depends on ACPI

due to calling ec_read()

> +	---help---
> +	  This is a driver for Acer Aspire One netbooks. It allows to access
> +	  the temperature sensor and to control the fan.
> +
> +	  After loading this driver the BIOS is still in control of the fan.
> +	  To let the kernel handle the fan, do:
> +	  echo -n enabled > /sys/class/thermal/thermal_zone0/mode
> +
> +	  For more information about this driver see
> +	  <http://piie.net/files/acerhdf_README.txt>
> +
> +	  If you have an Acer Aspire One netbook, say Y or M
> +	  here.
> +
>  config ASUS_LAPTOP
>  	tristate "Asus Laptop Extras (EXPERIMENTAL)"
>  	depends on ACPI


---
~Randy
LPC 2009, Sept. 23-25, Portland, Oregon
http://linuxplumbersconf.org/2009/
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