On 08/10/2011 02:30 PM, Russell King - ARM Linux wrote: >> > They must be allocated when they are required and must be freed after we >> > are >> > done with transfers. So that they can be used by other users. > Which DMA engine driver requires this? >
dw_dmac.c > Normally, when we have DMA engine drivers with multiple request signals, > the slave peripheral side publishes several virtual channels which are > claimed by the peripheral drivers. This (amongst other things) allows > the peripheral drivers to hold claim to one of the virtual channels > all the time that it's required. If users of DMA expect DMA engine drivers to work this way, then we should have this mentioned clearly in DMA slave documentation. @Dan/Vinod: What do you say? -- viresh ------------------------------------------------------------------------------ uberSVN's rich system and user administration capabilities and model configuration take the hassle out of deploying and managing Subversion and the tools developers use with it. Learn more about uberSVN and get a free download at: http://p.sf.net/sfu/wandisco-dev2dev _______________________________________________ spi-devel-general mailing list spi-devel-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/spi-devel-general
