> -----Original Message----- > From: linux-mmc-owner@xxxxxxxxxxxxxxx [mailto:linux-mmc- > owner@xxxxxxxxxxxxxxx] On Behalf Of Dirk Behme > Sent: Monday, October 19, 2009 1:17 PM > To: linux-omap@xxxxxxxxxxxxxxx > Cc: Madhusudhan; 'John Rigby'; 'Woodruff, Richard'; linux- > mmc@xxxxxxxxxxxxxxx; 'Steve Sakoman' > Subject: Re: MMC_CAP_SDIO_IRQ for omap 3430 > > 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. > Can you inline the v2 patch please? It helps review. I wonder in the version that John tested was the CTPL bit set in "set_ios" or "enable_sdio_irq"? Regards, Madhu > Cheers > > Dirk > > > _____ > > > > From: John Rigby [mailto:jcrigby@xxxxxxxxx] > > Sent: Sunday, October 18, 2009 7:24 PM > > To: Woodruff, Richard > > Cc: Dirk Behme; Chikkature Rajashekar, Madhusudhan; > > linux-mmc@xxxxxxxxxxxxxxx; linux-omap@xxxxxxxxxxxxxxx; 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@xxxxxxxxx> 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@xxxxxx> > > wrote: > >>>> From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap- > >>>> owner@xxxxxxxxxxxxxxx] 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. > >>> > > > > > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
