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drm/amdgpu: Iterate through DRM connectors correctly

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Currently, every single piece of code in amdgpu that loops through
connectors does it incorrectly and doesn't use the proper list iteration
helpers, drm_connector_list_iter_begin() and
drm_connector_list_iter_end(). Yeesh.

So, do that.

Cc: Juston Li <juston.li@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191022023641.8026-12-lyude@redhat.com
This commit is contained in:
Lyude Paul
2019-07-12 19:27:02 -04:00
parent ac0de16a38
commit 6857f879f9
11 changed files with 195 additions and 73 deletions
Download Patch File Download Diff File Expand all files Collapse all files

33
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@@ -897,27 +897,29 @@ static int detect_mst_link_for_all_connectors(struct drm_device *dev)
{
struct amdgpu_dm_connector *aconnector;
struct drm_connector *connector;
struct drm_connector_list_iter iter;
int ret = 0;
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_connector_list_iter_begin(dev, &iter);
drm_for_each_connector_iter(connector, &iter) {
aconnector = to_amdgpu_dm_connector(connector);
if (aconnector->dc_link->type == dc_connection_mst_branch &&
aconnector->mst_mgr.aux) {
DRM_DEBUG_DRIVER("DM_MST: starting TM on aconnector: %p [id: %d]\n",
aconnector, aconnector->base.base.id);
aconnector,
aconnector->base.base.id);
ret = drm_dp_mst_topology_mgr_set_mst(&aconnector->mst_mgr, true);
if (ret < 0) {
DRM_ERROR("DM_MST: Failed to start MST\n");
((struct dc_link *)aconnector->dc_link)->type = dc_connection_single;
return ret;
}
aconnector->dc_link->type =
dc_connection_single;
break;
}
}
}
drm_connector_list_iter_end(&iter);
drm_modeset_unlock(&dev->mode_config.connection_mutex);
return ret;
}
@@ -955,14 +957,13 @@ static void s3_handle_mst(struct drm_device *dev, bool suspend)
{
struct amdgpu_dm_connector *aconnector;
struct drm_connector *connector;
struct drm_connector_list_iter iter;
struct drm_dp_mst_topology_mgr *mgr;
int ret;
bool need_hotplug = false;
drm_modeset_lock(&dev->mode_config.connection_mutex, NULL);
list_for_each_entry(connector, &dev->mode_config.connector_list,
head) {
drm_connector_list_iter_begin(dev, &iter);
drm_for_each_connector_iter(connector, &iter) {
aconnector = to_amdgpu_dm_connector(connector);
if (aconnector->dc_link->type != dc_connection_mst_branch ||
aconnector->mst_port)
@@ -980,8 +981,7 @@ static void s3_handle_mst(struct drm_device *dev, bool suspend)
}
}
}
drm_modeset_unlock(&dev->mode_config.connection_mutex);
drm_connector_list_iter_end(&iter);
if (need_hotplug)
drm_kms_helper_hotplug_event(dev);
@@ -1163,6 +1163,7 @@ static int dm_resume(void *handle)
struct amdgpu_display_manager *dm = &adev->dm;
struct amdgpu_dm_connector *aconnector;
struct drm_connector *connector;
struct drm_connector_list_iter iter;
struct drm_crtc *crtc;
struct drm_crtc_state *new_crtc_state;
struct dm_crtc_state *dm_new_crtc_state;
@@ -1195,7 +1196,8 @@ static int dm_resume(void *handle)
amdgpu_dm_irq_resume_early(adev);
/* Do detection*/
list_for_each_entry(connector, &ddev->mode_config.connector_list, head) {
drm_connector_list_iter_begin(ddev, &iter);
drm_for_each_connector_iter(connector, &iter) {
aconnector = to_amdgpu_dm_connector(connector);
/*
@@ -1223,6 +1225,7 @@ static int dm_resume(void *handle)
amdgpu_dm_update_connector_after_detect(aconnector);
mutex_unlock(&aconnector->hpd_lock);
}
drm_connector_list_iter_end(&iter);
/* Force mode set in atomic commit */
for_each_new_crtc_in_state(dm->cached_state, crtc, new_crtc_state, i)

10
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c
View File

@@ -732,8 +732,10 @@ void amdgpu_dm_hpd_init(struct amdgpu_device *adev)
{
struct drm_device *dev = adev->ddev;
struct drm_connector *connector;
struct drm_connector_list_iter iter;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_connector_list_iter_begin(dev, &iter);
drm_for_each_connector_iter(connector, &iter) {
struct amdgpu_dm_connector *amdgpu_dm_connector =
to_amdgpu_dm_connector(connector);
@@ -751,6 +753,7 @@ void amdgpu_dm_hpd_init(struct amdgpu_device *adev)
true);
}
}
drm_connector_list_iter_end(&iter);
}
/**
@@ -765,8 +768,10 @@ void amdgpu_dm_hpd_fini(struct amdgpu_device *adev)
{
struct drm_device *dev = adev->ddev;
struct drm_connector *connector;
struct drm_connector_list_iter iter;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
drm_connector_list_iter_begin(dev, &iter);
drm_for_each_connector_iter(connector, &iter) {
struct amdgpu_dm_connector *amdgpu_dm_connector =
to_amdgpu_dm_connector(connector);
const struct dc_link *dc_link = amdgpu_dm_connector->dc_link;
@@ -779,4 +784,5 @@ void amdgpu_dm_hpd_fini(struct amdgpu_device *adev)
false);
}
}
drm_connector_list_iter_end(&iter);
}