From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bruno Ducrot Subject: Re: smartbattery support Date: Fri, 8 Oct 2004 10:29:23 +0200 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20041008082923.GD6785@poupinou.org> References: <16A54BF5D6E14E4D916CE26C9AD30575456AB2@pdsmsx402.ccr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <16A54BF5D6E14E4D916CE26C9AD30575456AB2-4yWAQGcml66iAffOGbnezLfspsVTdybXVpNB7YpNyf8@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Pedro Venda Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org On Thu, Oct 07, 2004 at 09:43:20PM +0800, Li, Shaohua wrote: > You needed an EC-based SMBus host driver (IIRC, some Acer latops defined > such host in DSDT). ACPI spec has the definition for EC-based SMBus host > interface. Second, a sensor driver for reading smart battery information > is required. > Some times ago, for a toshiba laptop, I began an i2c-acpi-ec driver: ftp://ftp.poupinou.org/acpi/i2c-acpi-ec.c It's a little bit buggy though but this allowed for me to access the sensors behind the EC. The main trouble was that there were not actually a smbus declared in the ACPI namespace and it was needed to hardcode where is the base adress in the EC space. You may try to start with that maybe, and I guess a real acpi_ec_smb_probe function must be written. Note that I think EC burst should be used, or else this is very very slow. So the real trouble is to get at first EC burst in acpi_ec. Cheers, -- Bruno Ducrot -- Which is worse: ignorance or apathy? -- Don't know. Don't care. ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl