Madhusudhan wrote:
> Hi John,
> 
> So does the SDIO card interrupt mode work fine now?

(wrong attachment in previous mail :( sorry)

If somebody likes to test, my updated patch v2 in attachment. Compile 
tested only, testing and comments are welcome.

Cheers

Dirk

>   _____  
> 
> From: John Rigby [mailto:jcrigby@gmail.com] 
> Sent: Sunday, October 18, 2009 7:24 PM
> To: Woodruff, Richard
> Cc: Dirk Behme; Chikkature Rajashekar, Madhusudhan;
> linux-mmc@vger.kernel.org; linux-omap@vger.kernel.org; Steve Sakoman
> Subject: Re: MMC_CAP_SDIO_IRQ for omap 3430
> 
>  
> 
> Ok I was going to ask where you found that but I just rechecked the TRM and
> there it is in plain site:
> 
> 
> 
> When this bit is set to 1, the host controller automatically disables all
> the input buffers except the buffer of mmci_dat[1] outside of a transaction
> in order to detect asynchronous card interrupt on mmci_dat[1] line and
> minimize the leakage current of the buffers.
> 
> 
> In my defence, I did search the TRM for every occurance of dat1 but not
> dat[1].  Oh well live and learn and forget and repeat.
> 
> John
> 
> On Sun, Oct 18, 2009 at 6:17 PM, John Rigby <jcrigby@gmail.com> wrote:
>> Richard,
>>
>> MMCHS_CON.CPTL = 1  < Don't disable input buffer on DAT1 after
>> completion to allow seeing SDIO interrupt>
>>
>> Sounds exactly like what we need.
>>
>> Thanks
>> John
>>
>> On Sun, Oct 18, 2009 at 5:12 PM, Woodruff, Richard <r-woodruff2@ti.com>
> wrote:
>>>> From: linux-omap-owner@vger.kernel.org [mailto:linux-omap-
>>>> owner@vger.kernel.org] On Behalf Of Dirk Behme
>>>> Sent: Sunday, October 18, 2009 11:45 AM
>>>>> It would be funny if the TRM was wrong and the CIRQ bit is really
>>>>> cleared by writing 1 to it.  I'll try that.
>>> A while back I hunted down a few of the bits for this.  Maybe this will
> help some.
>>> SYSCONFIG.ENAWAKEUP = 1 < allow ocp wrapper to generate an interrupt to
> prcm>
>>> MMCHS_HCTL.IWE = 1 < route wake up to module ocp wrapper>
>>> MMCHS_CON.CPTL = 1  < Don't disable input buffer on DAT1 after completion
> to allow seeing SDIO interrupt>
>>> MMCHS_HCTL.IWE
>>> MMCHS_ISE.CIRQ_ENABLE <bit to write to enable interrupt at pin>
>>> MMCHS_STAT<bit to write for clear of SDIO interrupt>
>>> CCCCR - IRQ_ENABLE (think host stack will do this)
>>>
>>> Regards,
>>> Richard W.
>>>
> 
>