diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 04439e888380a57a4e93a3bf0b9342ff057cf949..d326c54ff6671eacbecdf6c83bf1b9e22f79dbc7 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7556,6 +7556,7 @@ enum skl_disp_power_wells { #define SFUSE_STRAP _MMIO(0xc2014) #define SFUSE_STRAP_FUSE_LOCK (1<<13) #define SFUSE_STRAP_DISPLAY_DISABLED (1<<7) +#define SFUSE_STRAP_CRT_DISABLED (1<<6) #define SFUSE_STRAP_DDIB_DETECTED (1<<2) #define SFUSE_STRAP_DDIC_DETECTED (1<<1) #define SFUSE_STRAP_DDID_DETECTED (1<<0) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 4aa4cadeaf315d76a9080b4b206cb358c5b19e4b..bfb00e3835876340a8a935da65cdee697f122ae7 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -14257,6 +14257,9 @@ static bool intel_crt_present(struct drm_device *dev) if (IS_CHERRYVIEW(dev)) return false; + if (HAS_PCH_LPT_H(dev) && I915_READ(SFUSE_STRAP) & SFUSE_STRAP_CRT_DISABLED) + return false; + if (IS_VALLEYVIEW(dev) && !dev_priv->vbt.int_crt_support) return false;