[Intel-gfx] [PATCH] [VPG HSW-A] drm/i915: BUN vol4g[DevHSW] Vblank interrupt on disabled pipe

[Chris Wilson]

On Wed, Sep 04, 2013 at 05:14:02PM +0530, Sandeep Ramankutty wrote:
> This change is to comply with the BUN - Vblank interrupt on disabled pipe.
> BUN states - Do not unmask and enable a vertical blank interrupt on a pipe
> that is not enabled. Do not leave this interrupt enabled and unmasked after
> the associated pipe is disabled. If the vblank interrupt is unmasked and
> enabled on a disabled pipe it will block package C3, wasting power.

See drm_vblank_off().
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre