drm/i915: Enable FBC at Haswell.
This patch introduce Frame Buffer Compression (FBC) support for HSW.
FBC is tied to primary plane A in HSW.
v2: Ville pointed out docs say FBC must be disabled before disabling
the plane on HSW.
v3: Really enabling it by default at HSW.
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index fdc2839..10f788b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -274,12 +274,14 @@
IVB_DPFC_CTL_FENCE_EN |
intel_crtc->plane << IVB_DPFC_CTL_PLANE_SHIFT);
- /* WaFbcAsynchFlipDisableFbcQueue */
- I915_WRITE(ILK_DISPLAY_CHICKEN1, ILK_FBCQ_DIS);
- /* WaFbcDisableDpfcClockGating */
- I915_WRITE(ILK_DSPCLK_GATE_D,
- I915_READ(ILK_DSPCLK_GATE_D) |
- ILK_DPFCUNIT_CLOCK_GATE_DISABLE);
+ if (IS_IVYBRIDGE(dev)) {
+ /* WaFbcAsynchFlipDisableFbcQueue */
+ I915_WRITE(ILK_DISPLAY_CHICKEN1, ILK_FBCQ_DIS);
+ /* WaFbcDisableDpfcClockGating */
+ I915_WRITE(ILK_DSPCLK_GATE_D,
+ I915_READ(ILK_DSPCLK_GATE_D) |
+ ILK_DPFCUNIT_CLOCK_GATE_DISABLE);
+ }
I915_WRITE(SNB_DPFC_CTL_SA,
SNB_CPU_FENCE_ENABLE | obj->fence_reg);
@@ -476,7 +478,7 @@
if (enable_fbc < 0) {
DRM_DEBUG_KMS("fbc set to per-chip default\n");
enable_fbc = 1;
- if (INTEL_INFO(dev)->gen <= 7)
+ if (INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev))
enable_fbc = 0;
}
if (!enable_fbc) {
@@ -497,7 +499,8 @@
dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
goto out_disable;
}
- if ((IS_I915GM(dev) || IS_I945GM(dev)) && intel_crtc->plane != 0) {
+ if ((IS_I915GM(dev) || IS_I945GM(dev) || IS_HASWELL(dev)) &&
+ intel_crtc->plane != 0) {
DRM_DEBUG_KMS("plane not 0, disabling compression\n");
dev_priv->no_fbc_reason = FBC_BAD_PLANE;
goto out_disable;
@@ -4544,7 +4547,7 @@
if (I915_HAS_FBC(dev)) {
if (HAS_PCH_SPLIT(dev)) {
dev_priv->display.fbc_enabled = ironlake_fbc_enabled;
- if (IS_IVYBRIDGE(dev))
+ if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev))
dev_priv->display.enable_fbc =
gen7_enable_fbc;
else