diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3591-drm-amd-display-MST-topology-debugfs.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3591-drm-amd-display-MST-topology-debugfs.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3591-drm-amd-display-MST-topology-debugfs.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3591-drm-amd-display-MST-topology-debugfs.patch new file mode 100644 index 00000000..e243c3a3 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.19.8/3591-drm-amd-display-MST-topology-debugfs.patch @@ -0,0 +1,57 @@ +From b1104f15d61aa3b02845e93d263eb0b117280eb5 Mon Sep 17 00:00:00 2001 +From: David Francis <David.Francis@amd.com> +Date: Thu, 25 Jul 2019 15:22:16 -0400 +Subject: [PATCH 3591/4256] drm/amd/display: MST topology debugfs + +DRM provides drm_dp_mst_dump_topology, which prints +useful information about MST devices + +Hook this up to a debugfs file named amdgpu_mst_topology + +Signed-off-by: David Francis <David.Francis@amd.com> +Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> +--- + .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 24 +++++++++++++++++++ + 1 file changed, 24 insertions(+) + +diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +index e649280574c0..8fa160378378 100644 +--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c ++++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +@@ -1052,9 +1052,33 @@ static int target_backlight_read(struct seq_file *m, void *data) + return 0; + } + ++static int mst_topo(struct seq_file *m, void *unused) ++{ ++ struct drm_info_node *node = (struct drm_info_node *)m->private; ++ struct drm_device *dev = node->minor->dev; ++ struct drm_connector *connector; ++ struct drm_connector_list_iter conn_iter; ++ struct amdgpu_dm_connector *aconnector; ++ ++ drm_connector_list_iter_begin(dev, &conn_iter); ++ drm_for_each_connector_iter(connector, &conn_iter) { ++ if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort) ++ continue; ++ ++ aconnector = to_amdgpu_dm_connector(connector); ++ ++ seq_printf(m, "\nMST topology for connector %d\n", aconnector->connector_id); ++ drm_dp_mst_dump_topology(m, &aconnector->mst_mgr); ++ } ++ drm_connector_list_iter_end(&conn_iter); ++ ++ return 0; ++} ++ + static const struct drm_info_list amdgpu_dm_debugfs_list[] = { + {"amdgpu_current_backlight_pwm", ¤t_backlight_read}, + {"amdgpu_target_backlight_pwm", &target_backlight_read}, ++ {"amdgpu_mst_topology", &mst_topo}, + }; + + /* +-- +2.17.1 + |