This is a note to let you know that I've just added the patch titled
drm/i915: DisplayPort hot remove notification to audio driver
to the 3.2-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-displayport-hot-remove-notification-to-audio-driver.patch
and it can be found in the queue-3.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 832afda6a7d7235ef0e09f4ec46736861540da6d Mon Sep 17 00:00:00 2001
From: Wu Fengguang <[email protected]>
Date: Fri, 9 Dec 2011 20:42:21 +0800
Subject: drm/i915: DisplayPort hot remove notification to audio driver
From: Wu Fengguang <[email protected]>
commit 832afda6a7d7235ef0e09f4ec46736861540da6d upstream.
On DP monitor hot remove, clear DP_AUDIO_OUTPUT_ENABLE accordingly,
so that the audio driver will receive hot plug events and take action
to refresh its device state and ELD contents.
Note that the DP_AUDIO_OUTPUT_ENABLE bit may be enabled or disabled
only when the link training is complete and set to "Normal".
Tested OK for both hot plug/remove and DPMS on/off.
Signed-off-by: Wu Fengguang <[email protected]>
Signed-off-by: Keith Packard <[email protected]>
Signed-off-by: Eugeni Dodonov <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/i915/intel_dp.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1926,6 +1926,7 @@ intel_dp_link_down(struct intel_dp *inte
intel_wait_for_vblank(dev, to_intel_crtc(crtc)->pipe);
}
+ DP &= ~DP_AUDIO_OUTPUT_ENABLE;
I915_WRITE(intel_dp->output_reg, DP & ~DP_PORT_EN);
POSTING_READ(intel_dp->output_reg);
msleep(intel_dp->panel_power_down_delay);
Patches currently in stable-queue which might be from [email protected] are
queue-3.2/readahead-fix-pipeline-break-caused-by-block-plug.patch
queue-3.2/drm-i915-hdmi-hot-remove-notification-to-audio-driver.patch
queue-3.2/drm-i915-displayport-hot-remove-notification-to-audio-driver.patch
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