diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index ffd4ab111957fca30b571fcfdaceb7594ca3498f..e5242c0ce4f113432227167872f5ad039433baae 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -949,6 +949,7 @@ struct i915_fbc { FBC_ROTATION, /* rotation is not supported */ FBC_IN_DBG_MASTER, /* kernel debugger is active */ FBC_BAD_STRIDE, /* stride is not supported */ + FBC_PIXEL_RATE, /* pixel rate is too big */ } no_fbc_reason; bool (*fbc_enabled)(struct drm_i915_private *dev_priv); diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c index 69726a7ed0d0f1ad8268481e24a504376a84d431..1c4536ad4de984577b35d72701b0bd281d267858 100644 --- a/drivers/gpu/drm/i915/intel_fbc.c +++ b/drivers/gpu/drm/i915/intel_fbc.c @@ -482,6 +482,8 @@ const char *intel_no_fbc_reason_str(enum no_fbc_reason reason) return "Kernel debugger is active"; case FBC_BAD_STRIDE: return "framebuffer stride not supported"; + case FBC_PIXEL_RATE: + return "pixel rate is too big"; default: MISSING_CASE(reason); return "unknown reason"; @@ -828,6 +830,14 @@ static void __intel_fbc_update(struct drm_i915_private *dev_priv) goto out_disable; } + /* WaFbcExceedCdClockThreshold:hsw,bdw */ + if ((IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) && + ilk_pipe_pixel_rate(intel_crtc->config) >= + dev_priv->cdclk_freq * 95 / 100) { + set_no_fbc_reason(dev_priv, FBC_PIXEL_RATE); + goto out_disable; + } + if (intel_fbc_setup_cfb(dev_priv, obj->base.size, drm_format_plane_cpp(fb->pixel_format, 0))) { set_no_fbc_reason(dev_priv, FBC_STOLEN_TOO_SMALL);