[PATCH 1/7] mmc: mxs-mmc: add mmc host driver for i.MX23/28

[Shawn Guo]

Hi Lothar,

On Wed, Feb 09, 2011 at 08:46:18AM +0100, Lothar Waßmann wrote:
> Hi Shawn,
> 
> Shawn Guo writes:
> > This adds the mmc host driver for Freescale MXS-based SoC i.MX23/28.
> > The driver calls into mxs-dma via generic dmaengine api for both pio
> > and data transfer.
> > 
> > Signed-off-by: Shawn Guo <shawn.guo at freescale.com>
> > ---
> >  arch/arm/mach-mxs/include/mach/mmc.h |   15 +
> >  drivers/mmc/host/Kconfig             |    9 +
> >  drivers/mmc/host/Makefile            |    1 +
> >  drivers/mmc/host/mxs-mmc.c           |  884 ++++++++++++++++++++++++++++++++++
> >  4 files changed, 909 insertions(+), 0 deletions(-)
> >  create mode 100644 arch/arm/mach-mxs/include/mach/mmc.h
> >  create mode 100644 drivers/mmc/host/mxs-mmc.c
> > 
> I've run the mmc-test kernel module with this driver on our TX28
> module which fails in the following tests:
> |mmc0: Test case 15. Correct xfer_size at write (start failure)...
> |mmc0: Result: ERROR (-110)
> |mmc0: Test case 16. Correct xfer_size at read (start failure)...
> |mmc0: Result: ERROR (-110)
> |mmc0: Test case 17. Correct xfer_size at write (midway failure)...
> |mmc0: Result: ERROR (-110)
> |mmc0: Test case 18. Correct xfer_size at read (midway failure)...
> |mmc0: Result: ERROR (-110)
> 
> Could you try the test on your hardware?
> 
I'm new to this test.  I enabled MMC_TEST but did not see "test"
under /sys for mmc.  Can you please elaborate how to launch this
test?  Thanks.

Regards,
Shawn