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| author | Wu Fengguang <fengguang.wu@intel.com> | 2011-12-09 20:42:21 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-13 11:06:08 -0800 |
| commit | 1f8991ccf771442ae2423971798a6ca9d6db6343 (patch) | |
| tree | 22586ea13c8da884843c307b6192de3a5ca059da | |
| parent | 032aa01c0b53e12b3ac46db8e7202a3230a83a89 (diff) | |
| download | lwn-1f8991ccf771442ae2423971798a6ca9d6db6343.tar.gz lwn-1f8991ccf771442ae2423971798a6ca9d6db6343.zip | |
drm/i915: DisplayPort hot remove notification to audio driver
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 <fengguang.wu@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_dp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 14264a8c03eb..bf9fea941617 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -1554,6 +1554,7 @@ intel_dp_link_down(struct intel_dp *intel_dp) 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); } |