From: John Hughes <john@Calva.COM>
To: Mattia Dongili <malattia@linux.it>
Cc: Valdis.Kletnieks@vt.edu, linux-kernel@vger.kernel.org,
Stelian Pop <stelian@popies.net>,
platform-driver-x86 <platform-driver-x86@vger.kernel.org>
Subject: Re: sony-laptop driver: Volume keys on Sony Vaio TX3 don't work
Date: Tue, 18 Oct 2011 11:02:35 +0200 [thread overview]
Message-ID: <4E9D40AB.2060009@Calva.COM> (raw)
In-Reply-To: <20111017214326.GA1311@kamineko.org>
On 17/10/11 23:43, Mattia Dongili wrote:
> On Mon, Oct 17, 2011 at 01:17:00AM +0200, John Hughes wrote:
>
>> Ok, what is "two phase hotkey decoding?"
>>
> basically the driver receives in IRQ, reads from the IO port a value
> that turns out to be a generic value that means "got a hotkey" and needs
> to write one more command to the IO port and wait for another IRQ that
> potentially has the information about what hotkey was pressed.
>
> The part we're currently missing is what to write to the IO port for
> some models.
>
> See type3_handle_irq in the source and type3_events: most of those with
> data=0x05 require extra handling that we are not doing.
> On the second IRQ you get some data=0x31 and the actual event.
>
>
Oh, I see.
Poking around in the dark. What fun.
I'll see if I can think of any useful experiments.
next prev parent reply other threads:[~2011-10-18 9:02 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-16 11:11 sony-laptop driver: Volume keys on Sony Vaio TX3 don't work John Hughes
2011-10-16 12:30 ` Bug: changing keycodes generated by sony-laptop doesn't work John Hughes
2011-10-16 13:30 ` John Hughes
2011-10-17 9:08 ` John Hughes
2011-10-16 13:27 ` sony-laptop driver: Volume keys on Sony Vaio TX3 don't work John Hughes
2011-10-16 17:45 ` John Hughes
2011-10-16 18:20 ` Valdis.Kletnieks
2011-10-16 21:38 ` Mattia Dongili
2011-10-16 21:50 ` Valdis.Kletnieks
2011-10-16 23:17 ` John Hughes
2011-10-17 21:43 ` Mattia Dongili
2011-10-18 9:02 ` John Hughes [this message]
2011-10-17 21:45 ` Mattia Dongili
2011-10-18 9:07 ` John Hughes
2011-10-19 22:01 ` John Hughes
2011-10-16 23:13 ` John Hughes
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