Re: [Intel-gfx] [PATCH 1/2] drm/i915/vlv: save/restore the power context base reg

2015-04-02 Thread Deepak S
On Thursday 02 April 2015 02:52 AM, Jesse Barnes wrote: Some BIOSes (e.g. the one on the Minnowboard) don't save/restore this reg. If it's unlocked, we can just restore the previous value, and if it's locked (in case the BIOS re-programmed it for us) the write will be ignored and we'll still h

Re: [Intel-gfx] [PATCH 1/2] drm/i915/vlv: save/restore the power context base reg

2015-04-02 Thread Imre Deak
On Wed, 2015-04-01 at 14:22 -0700, Jesse Barnes wrote: > Some BIOSes (e.g. the one on the Minnowboard) don't save/restore this > reg. If it's unlocked, we can just restore the previous value, and if > it's locked (in case the BIOS re-programmed it for us) the write will be > ignored and we'll stil

Re: [Intel-gfx] [PATCH 1/2] drm/i915/vlv: save/restore the power context base reg

2015-04-02 Thread Jani Nikula
On Thu, 02 Apr 2015, Jesse Barnes wrote: > Some BIOSes (e.g. the one on the Minnowboard) don't save/restore this > reg. If it's unlocked, we can just restore the previous value, and if > it's locked (in case the BIOS re-programmed it for us) the write will be > ignored and we'll still have "did i

[Intel-gfx] [PATCH 1/2] drm/i915/vlv: save/restore the power context base reg

2015-04-01 Thread Jesse Barnes
Some BIOSes (e.g. the one on the Minnowboard) don't save/restore this reg. If it's unlocked, we can just restore the previous value, and if it's locked (in case the BIOS re-programmed it for us) the write will be ignored and we'll still have "did it move" sanity check in the PM code to warn us if