[PATCH 11/11] i915: mst topology dumper in debugfs (v0.2)

Dave Airlie
2014-05-21T02:55:04Z

use the mst helper code to dump the topology in debugfs.

v0.2: drop is_mst check - as we want to dump other info

Signed-off-by: Dave Airlie <airlied@redhat.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 88e944f..2d455ed 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2378,6 +2378,28 @@ struct pipe_crc_info {
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;
@@ -3813,6 +3835,7 @@ static const struct drm_info_list i915_debugfs_list[] = {
{"i915_pc8_status", i915_pc8_status, 0},
{"i915_power_domain_info", i915_power_domain_info, 0},
{"i915_display_info", i915_display_info, 0},
+ {"i915_dp_mst_info", i915_dp_mst_info, 0},
};
#define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)

--
1.9.0