This is a note to let you know that I've just added the patch titled
drm/radeon/atom: Send out the full AUX address
to the 4.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-radeon-atom-send-out-the-full-aux-address.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3f8340cc72c9a1a4b49bce7802afd7f248400ef5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@xxxxxxxxxxxxxxx>
Date: Thu, 27 Aug 2015 17:23:31 +0300
Subject: drm/radeon/atom: Send out the full AUX address
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From: =?UTF-8?q?Ville=20Syrj=C3=A4l=C3=A4?= <ville.syrjala@xxxxxxxxxxxxxxx>
commit 3f8340cc72c9a1a4b49bce7802afd7f248400ef5 upstream.
AUX addresses are 20 bits long. Send out the entire address instead of
just the low 16 bits.
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: "Christian König" <christian.koenig@xxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/atombios_dp.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -171,8 +171,9 @@ radeon_dp_aux_transfer_atom(struct drm_d
return -E2BIG;
tx_buf[0] = msg->address & 0xff;
- tx_buf[1] = msg->address >> 8;
- tx_buf[2] = msg->request << 4;
+ tx_buf[1] = (msg->address >> 8) & 0xff;
+ 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) {
Patches currently in stable-queue which might be from ville.syrjala@xxxxxxxxxxxxxxx are
queue-4.2/drm-radeon-atom-send-out-the-full-aux-address.patch
queue-4.2/drm-i915-check-dp-link-status-on-long-hpd-too.patch
queue-4.2/drm-i915-allow-dsi-dual-link-to-be-configured-on-any-pipe.patch
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