From cbe30b1e4f983144a2c902319f27bcc454b5a938 Mon Sep 17 00:00:00 2001
From: Wenjing Liu <wenjing.liu@amd.com>
Date: Fri, 20 Oct 2023 16:18:40 -0400
Subject: drm/amd/display: save and restore mall state when applying minimal
transition
Git-commit: fecbaa0a79adaa632e406ee5cffe5751e2d44fcb
Patch-mainline: v6.7-rc1
References: jsc#PED-3527 jsc#PED-5475 jsc#PED-6068 jsc#PED-6070 jsc#PED-6116 jsc#PED-6120 jsc#PED-5065 jsc#PED-5477 jsc#PED-5511 jsc#PED-6041 jsc#PED-6069 jsc#PED-6071
[why]
There is a case when we are switching from ODM combine to Subvp where
minimal transition based off subvp state is required. In thise case, we
need to save and restore mall state when applying minimal transition.
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Acked-by: Hersen Wu <hersenxs.wu@amd.com>
Signed-off-by: Wenjing Liu <wenjing.liu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index de8e5b18a12c..7b9bf5cb4529 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -4116,8 +4116,17 @@ static bool commit_minimal_transition_state_for_windowed_mpo_odm(struct dc *dc,
bool success = false;
struct dc_state *minimal_transition_context;
struct pipe_split_policy_backup policy;
+ struct mall_temp_config mall_temp_config;
/* commit based on new context */
+ /* Since all phantom pipes are removed in full validation,
+ * we have to save and restore the subvp/mall config when
+ * we do a minimal transition since the flags marking the
+ * pipe as subvp/phantom will be cleared (dc copy constructor
+ * creates a shallow copy).
+ */
+ if (dc->res_pool->funcs->save_mall_state)
+ dc->res_pool->funcs->save_mall_state(dc, context, &mall_temp_config);
minimal_transition_context = create_minimal_transition_state(dc,
context, &policy);
if (minimal_transition_context) {
@@ -4126,9 +4135,20 @@ static bool commit_minimal_transition_state_for_windowed_mpo_odm(struct dc *dc,
dc->hwss.is_pipe_topology_transition_seamless(
dc, minimal_transition_context, context)) {
DC_LOG_DC("%s base = new state\n", __func__);
+
success = dc_commit_state_no_check(dc, minimal_transition_context) == DC_OK;
}
release_minimal_transition_state(dc, minimal_transition_context, &policy);
+ if (dc->res_pool->funcs->restore_mall_state)
+ dc->res_pool->funcs->restore_mall_state(dc, context, &mall_temp_config);
+ /* If we do a minimal transition with plane removal and the context
+ * has subvp we also have to retain back the phantom stream / planes
+ * since the refcount is decremented as part of the min transition
+ * (we commit a state with no subvp, so the phantom streams / planes
+ * had to be removed).
+ */
+ if (dc->res_pool->funcs->retain_phantom_pipes)
+ dc->res_pool->funcs->retain_phantom_pipes(dc, context);
}
if (!success) {
--
2.43.0