I think we can make the patch and resulting code a bit more comprehensible...
On Fri, 1 Jul 2011 12:48:43 -0700, Ben Widawsky <[email protected]> wrote: > This seems to fix my bugs with sna enabled. > > We should collect some power numbers, and validate it works on ILK > before upstreaming. (And read more about what it actually does). > > Signed-off-by: Ben Widawsky <[email protected]> > --- > drivers/gpu/drm/i915/intel_display.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/drivers/gpu/drm/i915/intel_display.c > b/drivers/gpu/drm/i915/intel_display.c > index 804ac4d..4b94d71 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -1607,6 +1607,8 @@ static void ironlake_enable_fbc(struct drm_crtc *crtc, > unsigned long interval) > I915_WRITE(SNB_DPFC_CTL_SA, > SNB_CPU_FENCE_ENABLE | dev_priv->cfb_fence); > I915_WRITE(DPFC_CPU_FENCE_OFFSET, crtc->y); > + /* Set persistent mode */ > + I915_WRITE(ILK_DPFC_CONTROL, 1 << 25); /* Set persistent mode for front-buffer rendering and to detect direct * writes through the CPU */ I915_WRITE(ILK_DPFC_CONTROL, I915_READ(ILK_DPFC_CONTROL) | DPFC_CTL_PERSISTENT_MODE); -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/intel-gfx
