On 2020-11-26 4:45 p.m., Aurabindo Pillai wrote:
[Why&How]
Set dpms off on the MST connector that was unplugged, for the side effect of
releasing some references held through deallocation of mst payload.
Signed-off-by: Aurabindo Pillai <aurabindo.pil...@amd.com>
Signed-off-by: Eryk Brol <eryk.b...@amd.com>
---
.../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 33 ++++++++++++++++++-
drivers/gpu/drm/amd/display/dc/core/dc.c | 17 ++++++++++
drivers/gpu/drm/amd/display/dc/dc_stream.h | 1 +
3 files changed, 50 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index e213246e3f04..6203cbf3ee33 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1984,6 +1984,34 @@ static void dm_gpureset_commit_state(struct dc_state
*dc_state,
return;
}
+static void dm_set_dpms_off(struct dc_link *link)
+{
+ struct dc_stream_state *stream_state;
+ struct amdgpu_dm_connector *aconnector = link->priv;
+ struct amdgpu_device *adev = drm_to_adev(aconnector->base.dev);
+ struct {
+ struct dc_surface_update surface_updates[MAX_SURFACES];
Let's remove the bundle and drop the surface_updates here. A
surface_count of 0 should be sufficient to guard against NULL
surface_updates array.
+ struct dc_stream_update stream_update;
+ } bundle = {0};
+ bool dpms_off = true;
+
+ bundle.stream_update.dpms_off = &dpms_off;
+
+ mutex_lock(&adev->dm.dc_lock);
+ stream_state = dc_stream_find_from_link(link);
+ mutex_unlock(&adev->dm.dc_lock);
This needs to be move under dc_commit_updates_for_stream(). It's not
safe to call dc_commit_updates_for_stream while unlocked since it
modifies global state.
+
+ if (stream_state == NULL) {
+ dm_error("Error finding stream state associated with link!\n");
+ return;
+ }
+
+ bundle.stream_update.stream = stream_state;
+ dc_commit_updates_for_stream(stream_state->ctx->dc,
bundle.surface_updates, 0,
+ stream_state, &bundle.stream_update,
+ stream_state->ctx->dc->current_state);
+}
+
static int dm_resume(void *handle)
{
struct amdgpu_device *adev = handle;
@@ -2434,8 +2462,11 @@ static void handle_hpd_irq(void *param)
drm_kms_helper_hotplug_event(dev);
} else if (dc_link_detect(aconnector->dc_link, DETECT_REASON_HPD)) {
- amdgpu_dm_update_connector_after_detect(aconnector);
+ if (new_connection_type == dc_connection_none &&
+ aconnector->dc_link->type == dc_connection_none)
+ dm_set_dpms_off(aconnector->dc_link);
+ amdgpu_dm_update_connector_after_detect(aconnector);
drm_modeset_lock_all(dev);
dm_restore_drm_connector_state(dev, connector);
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c
b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 903353389edb..7a2b2802faa2 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2798,6 +2798,23 @@ struct dc_stream_state *dc_get_stream_at_index(struct dc
*dc, uint8_t i)
return NULL;
}
+struct dc_stream_state *dc_stream_find_from_link(const struct dc_link *link)
+{
+ uint8_t i;
+ struct dc_context *ctx = link->ctx;
+
+ for (i = 0; i< MAX_PIPES; i++) {
+ if (ctx->dc->current_state->streams[i] == NULL)
+ continue;
Drop the NULL check above and change MAX_PIPES to
dc->current_state->stream_count.
Regards,
Nicholas Kazlauskas
+
+ if (ctx->dc->current_state->streams[i]->link == link) {
+ return ctx->dc->current_state->streams[i];
+ }
+ }
+
+ return NULL;
+}
+
enum dc_irq_source dc_interrupt_to_irq_source(
struct dc *dc,
uint32_t src_id,
diff --git a/drivers/gpu/drm/amd/display/dc/dc_stream.h
b/drivers/gpu/drm/amd/display/dc/dc_stream.h
index bf090afc2f70..b7910976b81a 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_stream.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_stream.h
@@ -292,6 +292,7 @@ void dc_stream_log(const struct dc *dc, const struct
dc_stream_state *stream);
uint8_t dc_get_current_stream_count(struct dc *dc);
struct dc_stream_state *dc_get_stream_at_index(struct dc *dc, uint8_t i);
+struct dc_stream_state *dc_stream_find_from_link(const struct dc_link *link);
/*
* Return the current frame counter.
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