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Revert "drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk"

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This reverts commit 8f067837c4.

HSD says "WA withdrawn. It was causing corruption with some images.
WA is not strictly necessary since this bug just causes loss of FBC
compression with some sizes and images, but doesn't break anything."

Fixes: 8f067837c4 ("drm/i915: Display WA #1133 WaFbcSkipSegments:cnl, glk")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171117010825.23118-1-radhakrishna.sripada@intel.com
This commit is contained in:
Radhakrishna Sripada 2017-11-16 17:08:25 -08:00 committed by Rodrigo Vivi
parent 248c2435cb
commit 0cfecb7c4b
2 changed files with 0 additions and 15 deletions
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3
drivers/gpu/drm/i915/i915_reg.h
View File

@ -2985,9 +2985,6 @@ enum i915_power_well_id {
#define ILK_DPFC_CHICKEN _MMIO(0x43224)
#define ILK_DPFC_DISABLE_DUMMY0 (1<<8)
#define ILK_DPFC_NUKE_ON_ANY_MODIFICATION (1<<23)
#define GLK_SKIP_SEG_EN (1<<12)
#define GLK_SKIP_SEG_COUNT_MASK (3<<10)
#define GLK_SKIP_SEG_COUNT(x) ((x)<<10)
#define ILK_FBC_RT_BASE _MMIO(0x2128)
#define ILK_FBC_RT_VALID (1<<0)
#define SNB_FBC_FRONT_BUFFER (1<<1)

12
drivers/gpu/drm/i915/intel_pm.c
View File

@ -121,7 +121,6 @@ static void bxt_init_clock_gating(struct drm_i915_private *dev_priv)
static void glk_init_clock_gating(struct drm_i915_private *dev_priv)
{
u32 val;
gen9_init_clock_gating(dev_priv);
/*
@ -141,11 +140,6 @@ static void glk_init_clock_gating(struct drm_i915_private *dev_priv)
I915_WRITE(CHICKEN_MISC_2, val);
}
/* Display WA #1133: WaFbcSkipSegments:glk */
val = I915_READ(ILK_DPFC_CHICKEN);
val &= ~GLK_SKIP_SEG_COUNT_MASK;
val |= GLK_SKIP_SEG_EN | GLK_SKIP_SEG_COUNT(1);
I915_WRITE(ILK_DPFC_CHICKEN, val);
}
static void i915_pineview_get_mem_freq(struct drm_i915_private *dev_priv)
@ -8503,12 +8497,6 @@ static void cnl_init_clock_gating(struct drm_i915_private *dev_priv)
if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0))
val |= SARBUNIT_CLKGATE_DIS;
I915_WRITE(SLICE_UNIT_LEVEL_CLKGATE, val);
/* Display WA #1133: WaFbcSkipSegments:cnl */
val = I915_READ(ILK_DPFC_CHICKEN);
val &= ~GLK_SKIP_SEG_COUNT_MASK;
val |= GLK_SKIP_SEG_EN | GLK_SKIP_SEG_COUNT(1);
I915_WRITE(ILK_DPFC_CHICKEN, val);
}
static void cfl_init_clock_gating(struct drm_i915_private *dev_priv)