Barry, How are interrupts from SDIO devices handled ? SDIO devices use one of the pins to signal a interrupt to the host when data is availabe. Philip On Apr 26, 2011, at 12:27 AM, Barry Song wrote: > Hi Wolfram, > > 2011/4/26 Wolfram Sang <w.sang@xxxxxxxxxxxxxx>: >>>> * Where is the patch that implements the get_shared_pins() hook in >>>> your driver? >>> We send the common level patch ahead to get the upstream agreement so >>> that we can maintain our bottom level sdhci codes better. We will send >>> the special driver patch after some time. >> >> Hmm, why should be there a functionality if there is no user for it? A >> reference user helps people understand how it is intended to be used. > > completely right. Of course this patch is based on real applications > and SoCs. We are using ARASAN sd controller IP, it can be configurated > to use shared pins mode in SoC design. And it looks like it is a > common requirement to save chip footprint by sharing data bus between > multi-controllers. > > Just because Our SoCs are still on the way to opensource and mainline. > Even our arch/arm/mach-xxx hasn't been merged yet. Our target is > syncing our codes with mainline. So as a modification to sdhci common > level, we just get upstream's opinion for local maintaining earlier. > > Anyway, this patch may be applied later after our others are ready. Or > it can be now so that other SoC companies can use this feature. > >> >> Regards, >> >> Wolfram >> >> -- >> Pengutronix e.K. | Wolfram Sang | >> Industrial Linux Solutions | http://www.pengutronix.de/ | >> -- 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
