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drm/i915/display/icl+: Check if DMC is fused off 

Check if DMC is fused off and handle it.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Martin Peres <martin.peres@linux.intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191026001323.216052-4-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2019-10-25 17:13:22 -07:00
parent 7a40aac1d7
commit ee595888e1
2 changed files with 4 additions and 0 deletions
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1
drivers/gpu/drm/i915/i915_reg.h
View File

@ -7750,6 +7750,7 @@ enum {
#define SKL_DFSM_CDCLK_LIMIT_540 (1 << 23)
#define SKL_DFSM_CDCLK_LIMIT_450 (2 << 23)
#define SKL_DFSM_CDCLK_LIMIT_337_5 (3 << 23)
#define ICL_DFSM_DMC_DISABLE (1 << 23)
#define SKL_DFSM_PIPE_A_DISABLE (1 << 30)
#define SKL_DFSM_PIPE_B_DISABLE (1 << 21)
#define SKL_DFSM_PIPE_C_DISABLE (1 << 28)

3
drivers/gpu/drm/i915/intel_device_info.c
View File

@ -987,6 +987,9 @@ 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 (INTEL_GEN(dev_priv) >= 11 && (dfsm & ICL_DFSM_DMC_DISABLE))
info->display.has_csr = 0;
}
/* Initialize slice/subslice/EU info */