drm/i915: mst topology dumper in debugfs (v0.2)
use the mst helper code to dump the topology in debugfs.
v0.2: drop is_mst check - as we want to dump other info
Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index f27daf7..e6ff0ec 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2405,6 +2405,28 @@
enum pipe pipe;
};
+static int i915_dp_mst_info(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_encoder *encoder;
+ struct intel_encoder *intel_encoder;
+ struct intel_digital_port *intel_dig_port;
+ drm_modeset_lock_all(dev);
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+ intel_encoder = to_intel_encoder(encoder);
+ if (intel_encoder->type != INTEL_OUTPUT_DISPLAYPORT)
+ continue;
+ intel_dig_port = enc_to_dig_port(encoder);
+ if (!intel_dig_port->dp.can_mst)
+ continue;
+
+ drm_dp_mst_dump_topology(m, &intel_dig_port->dp.mst_mgr);
+ }
+ drm_modeset_unlock_all(dev);
+ return 0;
+}
+
static int i915_pipe_crc_open(struct inode *inode, struct file *filep)
{
struct pipe_crc_info *info = inode->i_private;
@@ -3906,6 +3928,7 @@
{"i915_display_info", i915_display_info, 0},
{"i915_semaphore_status", i915_semaphore_status, 0},
{"i915_shared_dplls_info", i915_shared_dplls_info, 0},
+ {"i915_dp_mst_info", i915_dp_mst_info, 0},
};
#define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)