[alsa-devel] [PATCH] dma: add new DMA control commands
b32955 at freescale.com
Thu Oct 18 11:13:11 CEST 2012
于 2012年10月18日 16:49, Marek Vasut 写道:
> 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?
it's too complicated to the MTD layer, as well as the gpmi driver.
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