In enable_sdio_irq if enable set ctpl else clear ctpl Again my version is halt baked. I was just happy that enabling ctpl prevents the infinitie cirq issue. On Tue, Oct 20, 2009 at 4:47 PM, Madhusudhan <madhu.cr@xxxxxx> wrote: > > >> -----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
