From: Ville Syrjälä Date: Thu, 2 Jul 2020 15:37:22 +0000 (+0300) Subject: drm/i915/fbc: Enable fbc on i865 X-Git-Tag: v5.9-rc1~134^2~1^2~71 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ddf08d320de6f210adb4f17c8cb91b7543dd99db;p=thirdparty%2Fkernel%2Flinux.git drm/i915/fbc: Enable fbc on i865 Unlike all the other pre-snb desktop platforms i865 actually supports FBC. Let's enable it. Quote from the spec: "DevSDG provides the same Run-Length Encoded Frame Buffer Compression (RLEFBC) function as exists in DevMGM." As i865 only has the one pipe we want to skip massaging the plane<->pipe assignment aimed at getting FBC+LVDS working on the mobile platforms. Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20200702153723.24327-4-ville.syrjala@linux.intel.com Reviewed-by: José Roberto de Souza --- diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 98a59e014b75b..dff7c17f3d2b9 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -16332,7 +16332,8 @@ intel_primary_plane_create(struct drm_i915_private *dev_priv, enum pipe pipe) * On gen2/3 only plane A can do FBC, but the panel fitter and LVDS * port is hooked to pipe B. Hence we want plane A feeding pipe B. */ - if (HAS_FBC(dev_priv) && INTEL_GEN(dev_priv) < 4) + if (HAS_FBC(dev_priv) && INTEL_GEN(dev_priv) < 4 && + INTEL_NUM_PIPES(dev_priv) == 2) plane->i9xx_plane = (enum i9xx_plane_id) !pipe; else plane->i9xx_plane = (enum i9xx_plane_id) pipe; diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c index e5fdf17cd9cdd..0be3b66ce666c 100644 --- a/drivers/gpu/drm/i915/i915_pci.c +++ b/drivers/gpu/drm/i915/i915_pci.c @@ -217,6 +217,7 @@ static const struct intel_device_info i85x_info = { static const struct intel_device_info i865g_info = { I845_FEATURES, PLATFORM(INTEL_I865G), + .display.has_fbc = 1, }; #define GEN3_FEATURES \