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drm/i915/dg1: DG1 does not support DC6

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DC6 is not supported on DG1, so change the allowed DC mask for DG1.
This is not yet on bspec, but it has been confirmed by HW engineers.

Cc: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201014191937.1266226-9-lucas.demarchi@intel.com
This commit is contained in:
Anshuman Gupta 2020-10-14 12:19:35 -07:00 committed by Lucas De Marchi
parent da94275092
commit cbb6ea8c68
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/i915/display/intel_display_power.c
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@ -4492,7 +4492,10 @@ static u32 get_allowed_dc_mask(const struct drm_i915_private *dev_priv,
int max_dc;
if (INTEL_GEN(dev_priv) >= 12) {
max_dc = 4;
if (IS_DG1(dev_priv))
max_dc = 3;
else
max_dc = 4;
/*
* DC9 has a separate HW flow from the rest of the DC states,
* not depending on the DMC firmware. It's needed by system