mmc_spi.c driver

["hartleys" <hartleys-3FF4nKcrg1dE2c76skzGb0EOCMrvLtNR@public.gmane.org>]

Hello all,

I'm trying to use the mmc_spi.c driver on an EP93xx platform and ran
into the "can't share SPI bus" issue.

My platform currently has an EEPROM (SST25LF040A using the at25.c
driver) and a MMC socket connected to the SPI bus. Just to see what
would happen I commented out the return when multiple devices are found
and just let the driver load. The driver then  appears to load ok and I
can mount the MMC card and still access the EEPROM.

Is there a patch to correctly handle the shared bus issue? If not has
anyone thought about what might need to be done?

Also, I have hooked up the card detect irq thru the
host->pdata->init(&spi->dev, mmc_spi_detect_irq, mmc) call and added a
comment in mmc_spi_detect_irq() to make sure it is called. Nothing
happens after that. I haven't looked into what mmc_detect_change() does
yet but shouldn't I see a new message from the mmc stuff about a "new
MMC card on SPI"?

Maybe I'm just missing something... still pretty new at this whole Linux
thing... ;-)

Thanks for the help,
Hartley Sweeten


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