diff options
| author | Wu Fengguang <fengguang.wu@intel.com> | 2011-12-09 20:42:21 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-13 11:16:57 -0800 |
| commit | e306967621bd97280eb17c9abab473070a2e5b45 (patch) | |
| tree | a7ee7d3012ac41d4a7c544bcd17648dca2a89c2c | |
| parent | febaacc3a6165f0cf54ff512f1e7e51563fd27b1 (diff) | |
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 92b041b66e49..db3b461ad412 100644 --- 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 *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); msleep(intel_dp->panel_power_down_delay); |