[PATCH 2/2] drm/amdgpu/atom: Send out the full AUX address

[Zhou, Jammy]

Patch is Reviewed-by: Jammy Zhou <Jammy.Zhou at amd.com>

I cannot find the first patch in my mailbox, did I miss something?

Regards,
Jammy

-----Original Message-----
From: dri-devel [mailto:dri-devel-bounces at lists.freedesktop.org] On Behalf Of Alex Deucher
Sent: Monday, August 31, 2015 11:19 PM
To: dri-devel at lists.freedesktop.org
Cc: Deucher, Alexander; stable at vger.kernel.org
Subject: [PATCH 2/2] drm/amdgpu/atom: Send out the full AUX address

AUX addresses are 20 bits long. Send out the entire address instead of just the low 16 bits.

Port of:
drm/radeon/atom: Send out the full AUX address to amdgpu

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Cc: stable at vger.kernel.org
---
 drivers/gpu/drm/amd/amdgpu/atombios_dp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index 9ba0a7d..92b6aca 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -139,7 +139,8 @@ amdgpu_atombios_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *m
 
 	tx_buf[0] = msg->address & 0xff;
 	tx_buf[1] = msg->address >> 8;
-	tx_buf[2] = msg->request << 4;
+	tx_buf[2] = (msg->request << 4) |
+		((msg->address >> 16) & 0xf);
 	tx_buf[3] = msg->size ? (msg->size - 1) : 0;
 
 	switch (msg->request & ~DP_AUX_I2C_MOT) {
--
1.8.3.1

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