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drm/i915: fix not reading DSC disable fuse in GLK

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We were using GRAPHICS_VER() to handle SKL_DFSM register, which means we
were not handling GLK correctly since that has GRAPHICS_VER == 9, but
DISPLAY_VER == 10. Switch the entire branch to check DISPLAY_VER
which makes it more in line with Bspec.

Even though the Bspec has an exception for RKL in
TGL_DFSM_PIPE_D_DISABLE, we don't have to do anything as the bit has
disable semantic and RKL doesn't have pipe D.

Bspec: 50075, 7548
Fixes: 2b5a4562ed ("drm/i915/display: Simplify GLK display version tests")
Cc: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210723234352.214459-1-lucas.demarchi@intel.com
This commit is contained in:
Lucas De Marchi 2021-07-23 16:43:52 -07:00
parent 3c73553f56
commit 4fd177288a
1 changed files with 5 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
drivers/gpu/drm/i915/intel_device_info.c
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@ -335,7 +335,7 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
info->pipe_mask &= ~BIT(PIPE_C);
info->cpu_transcoder_mask &= ~BIT(TRANSCODER_C);
}
} else if (HAS_DISPLAY(dev_priv) && GRAPHICS_VER(dev_priv) >= 9) {
} else if (HAS_DISPLAY(dev_priv) && DISPLAY_VER(dev_priv) >= 9) {
u32 dfsm = intel_de_read(dev_priv, SKL_DFSM);
if (dfsm & SKL_DFSM_PIPE_A_DISABLE) {
@ -350,7 +350,8 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
info->pipe_mask &= ~BIT(PIPE_C);
info->cpu_transcoder_mask &= ~BIT(TRANSCODER_C);
}
if (GRAPHICS_VER(dev_priv) >= 12 &&
if (DISPLAY_VER(dev_priv) >= 12 &&
(dfsm & TGL_DFSM_PIPE_D_DISABLE)) {
info->pipe_mask &= ~BIT(PIPE_D);
info->cpu_transcoder_mask &= ~BIT(TRANSCODER_D);
@ -362,10 +363,10 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
if (dfsm & SKL_DFSM_DISPLAY_PM_DISABLE)
info->display.has_fbc = 0;
if (GRAPHICS_VER(dev_priv) >= 11 && (dfsm & ICL_DFSM_DMC_DISABLE))
if (DISPLAY_VER(dev_priv) >= 11 && (dfsm & ICL_DFSM_DMC_DISABLE))
info->display.has_dmc = 0;
if (GRAPHICS_VER(dev_priv) >= 10 &&
if (DISPLAY_VER(dev_priv) >= 10 &&
(dfsm & CNL_DFSM_DISPLAY_DSC_DISABLE))
info->display.has_dsc = 0;
}