This is a note to let you know that I've just added the patch titled
drm/amd/display: Pass the right info to drm_dp_remove_payload
to the 6.2-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-amd-display-pass-the-right-info-to-drm_dp_remove_payload.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b8ca445f550a9a079134f836466ddda3bfad6108 Mon Sep 17 00:00:00 2001
From: Wayne Lin <Wayne.Lin@xxxxxxx>
Date: Fri, 17 Feb 2023 13:26:56 +0800
Subject: drm/amd/display: Pass the right info to drm_dp_remove_payload
From: Wayne Lin <Wayne.Lin@xxxxxxx>
commit b8ca445f550a9a079134f836466ddda3bfad6108 upstream.
[Why & How]
drm_dp_remove_payload() interface was changed. Correct amdgpu dm code
to pass the right parameter to the drm helper function.
Reviewed-by: Jerry Zuo <Jerry.Zuo@xxxxxxx>
Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
Signed-off-by: Wayne Lin <Wayne.Lin@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
(cherry-picked from b8ca445f550a9a079134f836466ddda3bfad6108)
[Hand modified due to missing f0127cb11299df80df45583b216e13f27c408545 which
failed to apply due to missing 94dfeaa46925bb6b4d43645bbb6234e846dec257]
Reported-and-tested-by: Veronika Schwan <veronika@xxxxxxxxxxxxxxxxx>
Fixes: d7b5638bd337 ("drm/amd/display: Take FEC Overhead into Timeslot Calculation")
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 57 ++++++++++++--
1 file changed, 50 insertions(+), 7 deletions(-)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -175,6 +175,40 @@ void dm_helpers_dp_update_branch_info(
const struct dc_link *link)
{}
+static void dm_helpers_construct_old_payload(
+ struct dc_link *link,
+ int pbn_per_slot,
+ struct drm_dp_mst_atomic_payload *new_payload,
+ struct drm_dp_mst_atomic_payload *old_payload)
+{
+ struct link_mst_stream_allocation_table current_link_table =
+ link->mst_stream_alloc_table;
+ struct link_mst_stream_allocation *dc_alloc;
+ int i;
+
+ *old_payload = *new_payload;
+
+ /* Set correct time_slots/PBN of old payload.
+ * other fields (delete & dsc_enabled) in
+ * struct drm_dp_mst_atomic_payload are don't care fields
+ * while calling drm_dp_remove_payload()
+ */
+ for (i = 0; i < current_link_table.stream_count; i++) {
+ dc_alloc =
+ ¤t_link_table.stream_allocations[i];
+
+ if (dc_alloc->vcp_id == new_payload->vcpi) {
+ old_payload->time_slots = dc_alloc->slot_count;
+ old_payload->pbn = dc_alloc->slot_count * pbn_per_slot;
+ break;
+ }
+ }
+
+ /* make sure there is an old payload*/
+ ASSERT(i != current_link_table.stream_count);
+
+}
+
/*
* Writes payload allocation table in immediate downstream device.
*/
@@ -186,7 +220,7 @@ bool dm_helpers_dp_mst_write_payload_all
{
struct amdgpu_dm_connector *aconnector;
struct drm_dp_mst_topology_state *mst_state;
- struct drm_dp_mst_atomic_payload *payload;
+ struct drm_dp_mst_atomic_payload *target_payload, *new_payload, old_payload;
struct drm_dp_mst_topology_mgr *mst_mgr;
aconnector = (struct amdgpu_dm_connector *)stream->dm_stream_context;
@@ -202,17 +236,26 @@ bool dm_helpers_dp_mst_write_payload_all
mst_state = to_drm_dp_mst_topology_state(mst_mgr->base.state);
/* It's OK for this to fail */
- payload = drm_atomic_get_mst_payload_state(mst_state, aconnector->port);
- if (enable)
- drm_dp_add_payload_part1(mst_mgr, mst_state, payload);
- else
- drm_dp_remove_payload(mst_mgr, mst_state, payload, payload);
+ new_payload = drm_atomic_get_mst_payload_state(mst_state, aconnector->port);
+
+ if (enable) {
+ target_payload = new_payload;
+
+ drm_dp_add_payload_part1(mst_mgr, mst_state, new_payload);
+ } else {
+ /* construct old payload by VCPI*/
+ dm_helpers_construct_old_payload(stream->link, mst_state->pbn_div,
+ new_payload, &old_payload);
+ target_payload = &old_payload;
+
+ drm_dp_remove_payload(mst_mgr, mst_state, &old_payload, new_payload);
+ }
/* mst_mgr->->payloads are VC payload notify MST branch using DPCD or
* AUX message. The sequence is slot 1-63 allocated sequence for each
* stream. AMD ASIC stream slot allocation should follow the same
* sequence. copy DRM MST allocation to dc */
- fill_dc_mst_payload_table_from_drm(stream->link, enable, payload, proposed_table);
+ fill_dc_mst_payload_table_from_drm(stream->link, enable, target_payload, proposed_table);
return true;
}
Patches currently in stable-queue which might be from Wayne.Lin@xxxxxxx are
queue-6.2/drm-amd-display-pass-the-right-info-to-drm_dp_remove_payload.patch
