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Revert "drm/i915: W/A for underruns with WM1+ disabled on icl"

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This reverts commit bf002c1007.

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>
This commit is contained in:
Ville Syrjälä 2019-02-13 18:54:22 +02:00
parent 58106b7d81
commit bfe0cd2851
2 changed files with 0 additions and 7 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View file

@ -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)

6
drivers/gpu/drm/i915/intel_display.c
View file

@ -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);
}