Revert "drm/i915: W/A for underruns with WM1+ disabled on icl"
This reverts commit bf002c100740f4ae01d0d86b44f65a712ee14031.
The hw team has come up with a better workaround. So
let's get rid of this one.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190213165424.22904-1-ville.syrjala@linux.intel.com
Reviewed-by: Clint Taylor <Clinton.A.Taylor@intel.com>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 9b4c5a6..2ee810d 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7653,7 +7653,6 @@ enum {
#define _PIPEB_CHICKEN 0x71038
#define _PIPEC_CHICKEN 0x72038
#define PER_PIXEL_ALPHA_BYPASS_EN (1 << 7)
-#define PM_FILL_MAINTAIN_DBUF_FULLNESS (1 << 0)
#define PIPE_CHICKEN(pipe) _MMIO_PIPE(pipe, _PIPEA_CHICKEN,\
_PIPEB_CHICKEN)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 59544bb..5e12623 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -3962,12 +3962,6 @@ static void icl_set_pipe_chicken(struct intel_crtc *crtc)
*/
tmp |= PER_PIXEL_ALPHA_BYPASS_EN;
- /*
- * W/A for underruns with linear/X-tiled with
- * WM1+ disabled.
- */
- tmp |= PM_FILL_MAINTAIN_DBUF_FULLNESS;
-
I915_WRITE(PIPE_CHICKEN(pipe), tmp);
}