The patch
drm/i915: increase the tries for HDMI hotplug live status checking
has been applied to the asoc tree at
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying to this mail.
Thanks, Mark
From 3d8acd1f667b45c531401c8f0c2033072e32a05d Mon Sep 17 00:00:00 2001
From: Gary Wang gary.c.wang@intel.com Date: Wed, 23 Dec 2015 16:11:35 +0800 Subject: [PATCH] drm/i915: increase the tries for HDMI hotplug live status checking
The total delay of HDMI hotplug detecting with 30ms is sometimes not enoughtfor HDMI live status up with specific HDMI monitors in BSW platform.
After doing experiments for following monitors, it needs 80ms at least for those worst cases.
Lenovo L246 1xwA (4 failed, necessary hot-plug delay: 58/40/60/40ms) Philips HH2AP (9 failed, necessary hot-plug delay: 80/50/50/60/46/40/58/58/39ms) BENQ ET-0035-N (6 failed, necessary hot-plug delay: 60/50/50/80/80/40ms) DELL U2713HM (2 failed, necessary hot-plug delay: 58/59ms) HP HP-LP2475w (5 failed, necessary hot-plug delay: 70/50/40/60/40ms)
It looks like 70-80 ms is BSW platform needs in some bad cases of the monitors at this end (8 times delay at most). Keep less than 100ms for HDCP pulse HPD low (with at least 100ms) to respond a plug out.
Reviewed-by: Cooper Chiou cooper.chiou@intel.com Tested-by: Gary Wang gary.c.wang@intel.com Cc: Gavin Hindman gavin.hindman@intel.com Cc: Sonika Jindal sonika.jindal@intel.com Cc: Shashank Sharma shashank.sharma@intel.com Cc: Shobhit Kumar shobhit.kumar@intel.com Signed-off-by: Gary Wang gary.c.wang@intel.com Link: http://patchwork.freedesktop.org/patch/msgid/1450858295-12804-1-git-send-ema... Tested-by: Shobhit Kumar shobhit.kumar@intel.com Cc: drm-intel-fixes@lists.freedesktop.org Fixes: 237ed86c693d ("drm/i915: Check live status before reading edid") Signed-off-by: Daniel Vetter daniel.vetter@ffwll.ch (cherry picked from commit f8d03ea0053b23de42c828d559016eabe0b91523) [Jani: undo the file mode change of the original commit] Signed-off-by: Jani Nikula jani.nikula@intel.com --- drivers/gpu/drm/i915/intel_hdmi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 64086f2d4e26..e6c035b0fc1c 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -1381,7 +1381,7 @@ intel_hdmi_detect(struct drm_connector *connector, bool force)
intel_display_power_get(dev_priv, POWER_DOMAIN_GMBUS);
- for (try = 0; !live_status && try < 4; try++) { + for (try = 0; !live_status && try < 9; try++) { if (try) msleep(10); live_status = intel_digital_port_connected(dev_priv,