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Date: Tue, 28 Jun 2011 09:19:24 +0300
Message-ID: <BANLkTikp+58Ae14a1OXr0F_OSsip69++yQ@mail.gmail.com> (sfid-20110628_082535_624781_E6860897)
Subject: Re: WL1271: WLAN_IRQ not working
From: "Levi, Shahar" <shahar_levi@ti.com>
To: Troy Kisky <troy.kisky@boundarydevices.com>
Cc: linux-wireless@vger.kernel.org
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Sender: linux-wireless-owner@vger.kernel.org

On Tue, Jun 28, 2011 at 5:56 AM, Troy Kisky
<troy.kisky@boundarydevices.com> wrote:
> Hi
Hi Troy,

>
> I trying to get an LSR WL1271 sdio module to work. Everything seems to
> work fine until the WLAN_IRQ pin should go high, but it never does. Checking
> with a scope shows constant low. proc/interrupts also says 0. I'm using
> 3.0.0-rc4 with patches for non-mainline board. If I make the interrupt
> gp a high output, I can raise the level of the WLAN_IRQ pin slightly,
> but it is still a logic 0.
>
>
> tiwi_r2_datasheet.pdf says interrupts are "active-low or falling-edge"
>
> So, why does the driver request an active high interrupt? I'm guessing
> datasheet bug.
>
> Anyway, here are the messages I'm getting with most debugging turned on,
> if someone is willing to take a look.
>
> Thanks
> Troy
Could you possibly check the irq pin setting fit to your platform? It
is read via wl12xx_get_platform_data().
The driver irq is HIGH polarity level. In case your platform not
support level you can switch to edge via
WL12XX_PLATFORM_QUIRK_EDGE_IRQ.

All the best,
Shahar