From 14e8774a8a11fe5d24db263554862d5826f60aca Mon Sep 17 00:00:00 2001
From: Lyude Paul <lyude@redhat.com>
Date: Fri, 13 Dec 2019 17:06:59 -0500
Subject: drm/nouveau/kms/nv140-: Don't modify depth in state during atomic
Git-commit: 9c8e9b790de33914e674035203461cb75c727e98
Patch-mainline: v5.9-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
commit
Currently, we modify the depth value stored in the atomic state when
performing a commit in order to workaround the fact we haven't
implemented support for depths higher then 10 yet. This isn't idempotent
though, as it will happen every atomic commit where we modify the OR
state even if the head's depth in the atomic state hasn't been modified.
Normally this wouldn't matter, since we don't modify OR state outside of
modesets, but since the CRC capture region is implemented as part of the
OR state in hardware we'll want to make sure all commits modifying OR
state are idempotent so as to avoid changing the depth unexpectedly.
So, fix this by simply not writing the reduced depth value we come up
with to the atomic state.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Dave Airlie <airlied@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200627194657.156514-5-lyude@redhat.com
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/nouveau/dispnv50/headc37d.c | 11 +++++++----
drivers/gpu/drm/nouveau/dispnv50/headc57d.c | 11 +++++++----
2 files changed, 14 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/nouveau/dispnv50/headc37d.c b/drivers/gpu/drm/nouveau/dispnv50/headc37d.c
index 4a9a32b89f74..9ef3c603fc43 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/headc37d.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/headc37d.c
@@ -27,17 +27,20 @@ static void
headc37d_or(struct nv50_head *head, struct nv50_head_atom *asyh)
{
struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan;
+ u8 depth;
u32 *push;
+
if ((push = evo_wait(core, 2))) {
/*XXX: This is a dirty hack until OR depth handling is
* improved later for deep colour etc.
*/
switch (asyh->or.depth) {
- case 6: asyh->or.depth = 5; break;
- case 5: asyh->or.depth = 4; break;
- case 2: asyh->or.depth = 1; break;
- case 0: asyh->or.depth = 4; break;
+ case 6: depth = 5; break;
+ case 5: depth = 4; break;
+ case 2: depth = 1; break;
+ case 0: depth = 4; break;
default:
+ depth = asyh->or.depth;
WARN_ON(1);
break;
}
diff --git a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
index 859131a8bc3c..97141eb8e75a 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/headc57d.c
@@ -27,17 +27,20 @@ static void
headc57d_or(struct nv50_head *head, struct nv50_head_atom *asyh)
{
struct nv50_dmac *core = &nv50_disp(head->base.base.dev)->core->chan;
+ u8 depth;
u32 *push;
+
if ((push = evo_wait(core, 2))) {
/*XXX: This is a dirty hack until OR depth handling is
* improved later for deep colour etc.
*/
switch (asyh->or.depth) {
- case 6: asyh->or.depth = 5; break;
- case 5: asyh->or.depth = 4; break;
- case 2: asyh->or.depth = 1; break;
- case 0: asyh->or.depth = 4; break;
+ case 6: depth = 5; break;
+ case 5: depth = 4; break;
+ case 2: depth = 1; break;
+ case 0: depth = 4; break;
default:
+ depth = asyh->or.depth;
WARN_ON(1);
break;
}
--
2.29.2