drm/i915: Disable DP audio for g4x

Apparently g4x doesn't support audio over DP. Bspec lists the
bit as "Reserved for Audio Output Enable", and empirical evidence
tells us that the bit won't stick. So stop trying to enable DP
audio on g4x.

Link: https://patchwork.freedesktop.org/patch/msgid/20171129164303.18793-1-ville.syrjala@linux.intel.com
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=103989
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index c603d4c903e1..01c848bbd795 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1643,7 +1643,7 @@ intel_dp_compute_config(struct intel_encoder *encoder,
                 pipe_config->has_pch_encoder = true;
 
         pipe_config->has_drrs = false;
-        if (port == PORT_A)
+        if (IS_G4X(dev_priv) || port == PORT_A)
                 pipe_config->has_audio = false;
         else if (intel_conn_state->force_audio == HDMI_AUDIO_AUTO)
                 pipe_config->has_audio = intel_dp->has_audio;