[PATCH] dma: add new DMA control commands

[Marek Vasut]

Dear Huang Shijie,

> 于 2012年10月18日 16:16, Marek Vasut 写道:
> > So we can't stream data from the chip? About time to adjust the MTD
> > framework to allow that. Maybe implement a command queue?
> 
> IMHO, it's not possible. Because the READ-PAGE(00h-30h) command needs to
> check the busy status
> which means we have to stop in the middle, so we can not chain the all
> the read-pages DMA commands.

Can the DMA not branch?

> thanks
> Huang Shijie

Best regards,
Marek Vasut