From 9a9e3dfd6f8bff68434b9c5e1a3aa88f83a612ad Mon Sep 17 00:00:00 2001 From: Mahesh Kumar Date: Tue, 30 Jan 2018 11:49:10 -0200 Subject: [PATCH] drm/i915/icl: Don't allocate fixed bypass path blocks for ICL GEN9 onwards bypass path allocation of 4 blocks was needed, as per hardware design. ICL doesn't require bypass path allocation of 4 DDB blocks, handling the same in this patch. v2 (from Paulo): - No need for a comment that says what the code already says. Reviewed-by: Paulo Zanoni Reviewed-by: James Ausmus Signed-off-by: Mahesh Kumar Signed-off-by: Paulo Zanoni Link: https://patchwork.freedesktop.org/patch/msgid/20180130134918.32283-2-paulo.r.zanoni@intel.com --- drivers/gpu/drm/i915/intel_pm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 0b92ea1..11aac65 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3778,7 +3778,8 @@ skl_ddb_get_pipe_allocation_limits(struct drm_device *dev, ddb_size = INTEL_INFO(dev_priv)->ddb_size; WARN_ON(ddb_size == 0); - ddb_size -= 4; /* 4 blocks for bypass path allocation */ + if (INTEL_GEN(dev_priv) < 11) + ddb_size -= 4; /* 4 blocks for bypass path allocation */ /* * If the state doesn't change the active CRTC's, then there's -- 2.7.4