linux-kernel - Re: [PATCH 2/2] toshiba-acpi: Support TOS1900-type devices

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Message-ID: <74962ea30904011003o354e8780ya5e9ac1a6a579084@mail.gmail.com>
Date:	Thu, 2 Apr 2009 10:03:05 +1700
From:	Azael Avalos <coproscefalo@...il.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	linux-acpi@...r.kernel.org, dsilvers@...tec.co.uk,
	toshiba_acpi@...ebeam.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] toshiba-acpi: Support TOS1900-type devices

On Thu, Apr 2, 2009 at 9:53 AM, Matthew Garrett <mjg59@...f.ucam.org> wrote:
> On Thu, Apr 02, 2009 at 09:50:59AM +1700, Azael Avalos wrote:
>> On Wed, Apr 1, 2009 at 4:02 PM, Matthew Garrett <mjg59@...f.ucam.org> wrote:
>> > Ok, can you try this and let me know what codes it generates (if it
>> > generates any)? It should go on top of the previous patches.
>>
>> Nothing gets generated, even if I change the method to ".INFO" and hotkey
>> events enabled with hci_write2(HCI_HOTKEY_EVENT, 1, 1, &hci_result) and
>> TECF set to 1 (see my DSDT).
>>
>> I was playing with the code yesterday trying to get some events reported, but no
>> luck so far.
>>
>> It appears that TOHK variable is _volatile_ and it just stores hotkey events
>> temporarily and they don't get _stored_ like in the System Event FIFO.
>
> Yes, you shouldn't be reading directly from TOHK at any point. It seems
> to be a purely internal variable - I'm fairly sure that the INFO method
> is the only one that should be called on event generation.

Well, on the patches sent to the omnibook module I was polling TOHK directly,
it is until now that I realized that I can poll the events via INFO
method, that is,
if I enable TECF first via method \\_SB.PCI0.LPCB.EC0.NTFY

>
>> On the patches I sent to the omnibook module I'm able to get events but they
>> seem to get repeated 3 times, or perhaps I'm polling to often.
>
> Hm. I don't have test hardware right now, I'm afraid. I'll look at some
> DSDTs a bit more and see if anything springs to mind.

Well, I brought my laptop to work (I'm a sysadmin so I got plenty of time :-P)
and I can test if that helps

>
> --
> Matthew Garrett | mjg59@...f.ucam.org
>

Saludos
Azael


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