Subject: [PATCH v8 0/2] sDMA descriptor autoloading feature

From: [email-masked] (Madhusudhan)
Date: Tue, 4 May 2010 18:15:29 -0500

> -----Original Message-----
> From: svenkatr at gmail.com [mailto:svenkatr at gmail.com] On Behalf Of
> Venkatraman S
> Sent: Thursday, April 29, 2010 12:35 PM
> To: linux-omap at vger.kernel.org; linux-mmc at vger.kernel.org; linux-arm-
> kernel at lists.infradead.org
> Cc: Madhusudhan Chikkature; Tony Lindgren; Adrian Hunter; Santosh
> Shilimkar
> Subject: [PATCH v8 0/2] sDMA descriptor autoloading feature
> 
>     This patch series is the introduction of new sDMA feature: descriptor
> autoloading (v8) and it's adoption by the OMAP HSMMC driver.
> 
>    The previous version (v7) was blocked on achieving proper interrupt
> syncronisation
> between the MMC and DMA callback in the HSMMC driver.
>   Thanks to Adrian Hunter's patch,
> https://patchwork.kernel.org/patch/94670/
> this has been cleaned up.
> 
> Current version is based on for-next branch + Adrian Hunter's
> interrupt syncronisation patch
> (https://patchwork.kernel.org/patch/94670)
> 
> Changes since v7:
>   * Removed the 'fix race condition between DMA and HSMMC callback'
> part of the series
>   * Added memory barries in start and resume sglist transfer for cpu
> buffer syncronization
>   * Cleanup and comments
> 
> This has been tested on OMAP3430, OMAP3630 and OMAP4430 SDP
> for MMC file transfer and as boot file system.
> 

The HSMMC driver changes look good to me. I can ACK that but am not a DMA
expert to review your changes to the DMA driver.

> Venkatraman S:
>     sDMA: descriptor autoloading feature
>     MMC: omap hsmmc adoption of descriptor autoloading feature
> 
>  arch/arm/plat-omap/dma.c              |  289
> ++++++++++++++++++++++++++++++++-
>  arch/arm/plat-omap/include/plat/dma.h |  170 +++++++++++++++++++
>  drivers/mmc/host/omap_hsmmc.c         |  148 ++++++++++++++---
>  3 files changed, 583 insertions(+), 24 deletions(-)