On Fri, 13 Apr 2012 17:08:42 -0300, Eugeni Dodonov <eugeni.dodonov at intel.com> wrote: > With Lynx Point, we need to use SBI to communicate with the display clock > control. This commit adds helper functions to access the registers via > SBI. > > v2: de-inline the function and address changes in bits names > > v3: protect operations with dpio_lock, increase timeout to 100 for > paranoia sake. > > v1 Reviewed-by: Rodrigo Vivi <rodrigo.vivi at gmail.com> Hmm, busy-waits upon a register change. Does it have to be atomic? Can it really be called in IRQ context? Can I have a sleepy version that won't cause audible stutters for the normal case? (Admittedly single-core processors are history...) -Chris -- Chris Wilson, Intel Open Source Technology Centre
