2013/4/24 <ville.syrjala at linux.intel.com>:
> From: Ville Syrj?l? <ville.syrjala at linux.intel.com>
>
> If the calculated FBC watermark is no good, we simply disable FBC
> watermarks. But we fail to re-enable them later if the calculated
> watermark becomes good again. Fix that, but remember to leave FBC
> watermarks disabled on ILK since that's required by some workarounds.
>
> v2: Fix checkpatch complaint
>
> Signed-off-by: Ville Syrj?l? <ville.syrjala at linux.intel.com>
Looks correct...
Reviewed-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 3534a71..da8f307 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -1633,6 +1633,10 @@ static bool ironlake_check_srwm(struct drm_device *dev, int level,
> I915_WRITE(DISP_ARB_CTL,
> I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS);
> return false;
> + } else if (INTEL_INFO(dev)->gen >= 6) {
> + /* enable FBC WM (except on ILK, where it must remain off) */
> + I915_WRITE(DISP_ARB_CTL,
> + I915_READ(DISP_ARB_CTL) & ~DISP_FBC_WM_DIS);
> }
>
> if (display_wm > display->max_wm) {
> --
> 1.8.1.5
>
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--
Paulo Zanoni
