Patch "drm/i915/bios: parse DDI ports also for CHV for HDMI DDC pin and DP AUX channel" has been added to the 4.9-stable tree

This is a note to let you know that I've just added the patch titled

drm/i915/bios: parse DDI ports also for CHV for HDMI DDC pin and DP AUX channel

to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
drm-i915-bios-parse-ddi-ports-also-for-chv-for-hdmi-ddc-pin-and-dp-aux-channel.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Jani Nikula <[email protected]>
Date: Thu, 28 Sep 2017 11:21:57 +0300
Subject: drm/i915/bios: parse DDI ports also for CHV for HDMI DDC pin and DP AUX channel
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From: Jani Nikula <[email protected]>

commit ea850f64c2722278f150dc11de2141baeb24211c upstream.

While technically CHV isn't DDI, we do look at the VBT based DDI port info for HDMI DDC pin and DP AUX channel. (We call these "alternate", but they're really just something that aren't platform defaults.)

In commit e4ab73a13291 ("drm/i915: Respect alternate_ddc_pin for all DDI ports") Ville writes, "IIRC there may be CHV system that might actually need this."

I'm not sure why there couldn't be even more platforms that need this, but start conservative, and parse the info for CHV in addition to DDI.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=100553

---
 drivers/gpu/drm/i915/intel_bios.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -1219,7 +1219,7 @@ static void parse_ddi_ports(struct drm_i
 {
 	enum port port;
 
-	if (!HAS_DDI(dev_priv))
+	if (!HAS_DDI(dev_priv) && !IS_CHERRYVIEW(dev_priv))
 		return;
 
 	if (!dev_priv->vbt.child_dev_num)

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/drm-i915-bios-parse-ddi-ports-also-for-chv-for-hdmi-ddc-pin-and-dp-aux-channel.patch queue-4.9/drm-i915-edp-get-the-panel-power-off-timestamp-after-panel-is-off.patch