[Intel-gfx] [PATCH 01/24] drm/i915: Don't read sprite LP2+ registers on ILK/SNB

[Paulo Zanoni]

2014-03-07 13:32 GMT-03:00  <ville.syrjala at linux.intel.com>:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> Sprite LP2+ registers don't exist on ILK/SNB so don't read them.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

Reviewed-by: Paulo Zanoni <paulo.r.zanoni at intel.com>

> ---
>  drivers/gpu/drm/i915/intel_pm.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 47b502b..26c79ed 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -2664,8 +2664,10 @@ void ilk_wm_get_hw_state(struct drm_device *dev)
>         hw->wm_lp[2] = I915_READ(WM3_LP_ILK);
>
>         hw->wm_lp_spr[0] = I915_READ(WM1S_LP_ILK);
> -       hw->wm_lp_spr[1] = I915_READ(WM2S_LP_IVB);
> -       hw->wm_lp_spr[2] = I915_READ(WM3S_LP_IVB);
> +       if (INTEL_INFO(dev)->gen >= 7) {
> +               hw->wm_lp_spr[1] = I915_READ(WM2S_LP_IVB);
> +               hw->wm_lp_spr[2] = I915_READ(WM3S_LP_IVB);
> +       }
>
>         if (IS_HASWELL(dev) || IS_BROADWELL(dev))
>                 hw->partitioning = (I915_READ(WM_MISC) & WM_MISC_DATA_PARTITION_5_6) ?
> --
> 1.8.3.2
>
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-- 
Paulo Zanoni