This is a note to let you know that I've just added the patch titled
drm: rcar-du: Fix H/V sync signal polarity configuration
to the 4.4-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-rcar-du-fix-h-v-sync-signal-polarity-configuration.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fd1adef3bff0663c5ac31b45bc4a05fafd43d19b Mon Sep 17 00:00:00 2001
From: Koji Matsuoka <koji.matsuoka.xm@xxxxxxxxxxx>
Date: Mon, 16 May 2016 11:28:15 +0900
Subject: drm: rcar-du: Fix H/V sync signal polarity configuration
From: Koji Matsuoka <koji.matsuoka.xm@xxxxxxxxxxx>
commit fd1adef3bff0663c5ac31b45bc4a05fafd43d19b upstream.
The VSL and HSL bits in the DSMR register set the corresponding
horizontal and vertical sync signal polarity to active high. The code
got it the wrong way around, fix it.
Signed-off-by: Koji Matsuoka <koji.matsuoka.xm@xxxxxxxxxxx>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
Signed-off-by: Thong Ho <thong.ho.px@xxxxxxxxxxxxxxx>
Signed-off-by: Nhan Nguyen <nhan.nguyen.yb@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -148,8 +148,8 @@ static void rcar_du_crtc_set_display_tim
rcar_du_group_write(rcrtc->group, rcrtc->index % 2 ? OTAR2 : OTAR, 0);
/* Signal polarities */
- value = ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? 0 : DSMR_VSL)
- | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? 0 : DSMR_HSL)
+ value = ((mode->flags & DRM_MODE_FLAG_PVSYNC) ? DSMR_VSL : 0)
+ | ((mode->flags & DRM_MODE_FLAG_PHSYNC) ? DSMR_HSL : 0)
| DSMR_DIPM_DE | DSMR_CSPM;
rcar_du_crtc_write(rcrtc, DSMR, value);
Patches currently in stable-queue which might be from koji.matsuoka.xm@xxxxxxxxxxx are
queue-4.4/drm-rcar-du-fix-h-v-sync-signal-polarity-configuration.patch
queue-4.4/drm-rcar-du-fix-display-timing-controller-parameter.patch