On Tue, Sep 03, 2013 at 04:22:29PM -0700, Mike Turquette wrote: > Quoting Lars-Peter Clausen (2013-08-30 06:24:45)
> > === Clock chip driver === === SPI master driver === > > clk_prepare_lock() > > spi_sync() > > wait_for_completion(X) > Is there a synchronous equivalent to spi_sync()? spi_sync() is synchronous? Obviously everything is asynchronous up to that point but the only way the driver can tell if the I/O completed is using spi_sync() or the equivalent thereof. If you're asking if there is a way of doing SPI I/O that isn't multi threaded then there isn't, in order to keep pushing transfers into the SPI controller to saturate the bus we have a high priority task to push more data in. SPI buses can be quite high bandwidth in some applications.
signature.asc
Description: Digital signature
