diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_fbc.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c index 737e3c1e2304..4d83a7e92144 100644 --- a/drivers/gpu/drm/i915/display/intel_fbc.c +++ b/drivers/gpu/drm/i915/display/intel_fbc.c @@ -200,17 +200,30 @@ static unsigned int intel_fbc_cfb_stride(const struct intel_plane_state *plane_s return _intel_fbc_cfb_stride(display, width, stride); } -static unsigned int intel_fbc_cfb_size(const struct intel_plane_state *plane_state) +/* + * Maximum height the hardware will compress, on HSW+ + * additional lines (up to the actual plane height) will + * remain uncompressed. + */ +static unsigned int intel_fbc_max_cfb_height(struct intel_display *display) { - struct intel_display *display = to_intel_display(plane_state->uapi.plane->dev); - int height = drm_rect_height(&plane_state->uapi.src) >> 16; + struct drm_i915_private *i915 = to_i915(display->drm); if (DISPLAY_VER(display) >= 8) - height = min(height, 2560); - else if (DISPLAY_VER(display) == 7) - height = min(height, 2048); + return 2560; + else if (DISPLAY_VER(display) >= 5 || IS_G4X(i915)) + return 2048; + else + return 1536; +} + +static unsigned int intel_fbc_cfb_size(const struct intel_plane_state *plane_state) +{ + struct intel_display *display = to_intel_display(plane_state->uapi.plane->dev); + unsigned int height = drm_rect_height(&plane_state->uapi.src) >> 16; - return height * intel_fbc_cfb_stride(plane_state); + return min(height, intel_fbc_max_cfb_height(display)) * + intel_fbc_cfb_stride(plane_state); } static u16 intel_fbc_override_cfb_stride(const struct intel_plane_state *plane_state) |