From: Ville Syrjälä Date: Wed, 27 Nov 2019 20:12:09 +0000 (+0200) Subject: drm/i915/fbc: Disable fbc by default on all glk+ X-Git-Tag: v5.4.6~13 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=818f1c7d82cdf42d40a1e5d3f7d8de711aafeb32;p=platform%2Fkernel%2Flinux-rpi.git drm/i915/fbc: Disable fbc by default on all glk+ commit 0eb8e74f7202a4a98bbc0c1adeed3986cf50b66a upstream. We're missing a workaround in the fbc code for all glk+ platforms which can cause corruption around the top of the screen. So enabling fbc by default is a bad idea. I'm not keen to backport the w/a so let's start by disabling fbc by default on all glk+. We'll lift the restriction once the w/a is in place. Cc: stable@vger.kernel.org Cc: Daniel Drake Cc: Paulo Zanoni Cc: Jian-Hong Pan Cc: Maarten Lankhorst Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20191127201222.16669-2-ville.syrjala@linux.intel.com Reviewed-by: Maarten Lankhorst (cherry picked from commit cd8c021b36a66833cefe2c90a79a9e312a2a5690) Signed-off-by: Joonas Lahtinen Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c b/drivers/gpu/drm/i915/display/intel_fbc.c index 16ed44bfd734..07a038f21619 100644 --- a/drivers/gpu/drm/i915/display/intel_fbc.c +++ b/drivers/gpu/drm/i915/display/intel_fbc.c @@ -1284,7 +1284,7 @@ static int intel_sanitize_fbc_option(struct drm_i915_private *dev_priv) return 0; /* https://bugs.freedesktop.org/show_bug.cgi?id=108085 */ - if (IS_GEMINILAKE(dev_priv)) + if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) return 0; if (IS_BROADWELL(dev_priv) || INTEL_GEN(dev_priv) >= 9)