[PATCH v2 1/1] mmc: host: enable OMAP DMA engine support for omap hosts by default

On Tue, Jul 17, 2012 at 9:09 AM, Shilimkar, Santosh
[off-list ref] wrote:

On Tue, Jul 17, 2012 at 12:33 PM, Javier Martinez Canillas
[off-list ref] wrote:

quoted

The OMAP MMC and OMAP High Speed MMC hosts now use entirely the DMA
engine API instead of the previous private DMA API implementation.

So, if the kernel is built with support for any of these hosts but it
doesn't support DMA devices nor OMAP DMA support, it fails when trying
to obtain a DMA channel which leads to the following error on an OMAP3
IGEPv2 Rev.C board (and probably on most OMAP boards with MMC support):

[    2.199981] omap_hsmmc omap_hsmmc.1: unable to obtain RX DMA engine channel 48
[    2.215087] omap_hsmmc omap_hsmmc.0: unable to obtain RX DMA engine channel 62

selecting automatically CONFIG_DMADEVICES and CONFIG_DMA_OMAP solves it.

While being there, also update drivers/spi/spi-omap2-mcspi which has been
ported to DMA engine API too.

Signed-off-by: Javier Martinez Canillas <javier@dowhile0.org>
---

Looks like this patch should go to Russell's tree where rest of the OMAP
DMA engine patches are queued.

For the patch itself,
Acked-by: Santosh Shilimkar <redacted>

Hi Santhosh,

Thanks a lot for your feedback.

Russell can you take this patch please or do you want me to resend?

Best regards,
Javier