54 lines
1.8 KiB
Diff
54 lines
1.8 KiB
Diff
From c3d75c94de553c3084dd4dfd0d5d9aa6e53f3457 Mon Sep 17 00:00:00 2001
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From: Hans de Goede <hdegoede@redhat.com>
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Date: Tue, 29 Jan 2019 12:53:32 +0100
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Subject: [PATCH] drm/i915: Enable fastboot by default on VLV and CHV
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We really want to have fastboot enabled by default to avoid an ugly
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modeset during boot.
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Currently we are enabling fastboot by default on gen9+ (Skylake and newer).
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The intention is to enable it on older generations after it has seen more
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testing on gen9+.
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VLV and CHV devices are still being sold in stores today, as such it is
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desirable to also enable fastboot by default on these now.
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I've extensively tested fastboot=1 support on over 50 different
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Bay- and Cherry-Trail devices. Testing DSI and eDP panels as well as
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HDMI output (and even DP over Type-C on one device).
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All 50 devices work fine with fastboot=1. On 2 devices their DSI panel
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turns black as soon as the i915 driver loads when fastboot=0, so having
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fastboot enabled is required for these 2 to work properly (for lack of
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a better fix).
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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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---
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drivers/gpu/drm/i915/intel_display.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
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index d756d7358292..0ff42a38023c 100644
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--- a/drivers/gpu/drm/i915/intel_display.c
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+++ b/drivers/gpu/drm/i915/intel_display.c
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@@ -11672,7 +11672,15 @@ static bool fastboot_enabled(struct drm_i915_private *dev_priv)
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return i915_modparams.fastboot;
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/* Enable fastboot by default on Skylake and newer */
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- return INTEL_GEN(dev_priv) >= 9;
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+ if (INTEL_GEN(dev_priv) >= 9)
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+ return true;
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+
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+ /* Enable fastboot by default on VLV and CHV */
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+ if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
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+ return true;
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+
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+ /* Disabled by default on all others */
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+ return false;
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}
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static bool
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--
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2.20.1
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