From: José Roberto de Souza Date: Sat, 26 Oct 2019 00:13:21 +0000 (-0700) Subject: drm/i915/display: Check if FBC is fused off X-Git-Tag: for-linus-20191205~71^2~20^2~29 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=7a40aac1d77ab05ca375ac34de44e7972cc61dc3;p=linux-block.git drm/i915/display: Check if FBC is fused off Check if FBC is fused off and handle it. Cc: Ville Syrjälä Cc: Martin Peres Reviewed-by: Ramalingam C Signed-off-by: José Roberto de Souza Link: https://patchwork.freedesktop.org/patch/msgid/20191026001323.216052-3-jose.souza@intel.com --- diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index d90adf02e0a5..ecbcc0e33850 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7743,6 +7743,7 @@ enum { #define CNL_DDI_CLOCK_REG_ACCESS_ON (1 << 7) #define SKL_DFSM _MMIO(0x51000) +#define SKL_DFSM_DISPLAY_PM_DISABLE (1 << 27) #define SKL_DFSM_DISPLAY_HDCP_DISABLE (1 << 25) #define SKL_DFSM_CDCLK_LIMIT_MASK (3 << 23) #define SKL_DFSM_CDCLK_LIMIT_675 (0 << 23) diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c index e7dd6092c105..a3e90714cfa2 100644 --- a/drivers/gpu/drm/i915/intel_device_info.c +++ b/drivers/gpu/drm/i915/intel_device_info.c @@ -984,6 +984,9 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv) if (dfsm & SKL_DFSM_DISPLAY_HDCP_DISABLE) info->display.has_hdcp = 0; + + if (dfsm & SKL_DFSM_DISPLAY_PM_DISABLE) + info->display.has_fbc = 0; } /* Initialize slice/subslice/EU info */