From: Alex Deucher <alexdeucher@gmail.com>
Date: Tue, 22 Apr 2014 06:02:06 +0000 (-0400)
Subject: drm/radeon/aux: fix hpd assignment for aux bus
X-Git-Tag: firefly_0821_release~176^2~3977^2~8^2~5
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ad47b8fa5a679b7acaae831635e40d2e4887e9e7;p=firefly-linux-kernel-4.4.55.git

drm/radeon/aux: fix hpd assignment for aux bus

The hpd (hot plug detect) pin assignment got lost
in the conversion to to the common i2c over aux
code.  Without this information, aux transactions
do not work properly.  Fixes DP failures.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
---

diff --git a/drivers/gpu/drm/radeon/atombios_dp.c b/drivers/gpu/drm/radeon/atombios_dp.c
index 15936524f226..bc0119fb6c12 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -209,6 +209,7 @@ void radeon_dp_aux_init(struct radeon_connector *radeon_connector)
 {
 	int ret;
 
+	radeon_connector->ddc_bus->rec.hpd = radeon_connector->hpd.hpd;
 	radeon_connector->ddc_bus->aux.dev = radeon_connector->base.kdev;
 	radeon_connector->ddc_bus->aux.transfer = radeon_dp_aux_transfer;
 	ret = drm_dp_aux_register_i2c_bus(&radeon_connector->ddc_bus->aux);