Read DisplayPort branch device info from through debugfs
interface.
Signed-off-by: Mika Kahola <mika.kah...@intel.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c
b/drivers/gpu/drm/i915/i915_debugfs.c
index 4c6b48d..74c6aa2 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -2923,6 +2923,43 @@ static void intel_dp_info(struct seq_file *m,
seq_printf(m, "\tDPCD rev: %x\n", intel_dp->dpcd[DP_DPCD_REV]);
seq_printf(m, "\taudio support: %s\n", yesno(intel_dp->has_audio));
+ seq_printf(m, "\tbranch device: %s\n", yesno(intel_dp->bd.present));
+
+ if (intel_dp->bd.present) {
+ switch (intel_dp->bd.type) {
+ case DP_DS_PORT_TYPE_DP:
+ seq_printf(m, "\ttype: DisplayPort\n");
+ break;
+ case DP_DS_PORT_TYPE_VGA:
+ seq_printf(m, "\ttype: VGA\n");
+ break;
+ case DP_DS_PORT_TYPE_DVI:
+ seq_printf(m, "\ttype: DVI\n");
+ break;
+ case DP_DS_PORT_TYPE_HDMI:
+ seq_printf(m, "\ttype: HDMI\n");
+ break;
+ case DP_DS_PORT_TYPE_NON_EDID:
+ seq_printf(m, "\ttype: others without EDID support\n");
+ break;
+ case DP_DS_PORT_TYPE_DP_DUALMODE:
+ seq_printf(m, "\ttype: DP++\n");
+ break;
+ case DP_DS_PORT_TYPE_WIRELESS:
+ seq_printf(m, "\ttype: Wireless\n");
+ break;
+ default:
+ seq_printf(m, "\ttype: N/A\n");
+ }
+
+ seq_printf(m, "\tHPD aware: %s\n", yesno(intel_dp->bd.hpd));
+ seq_printf(m, "\tDevice id: %s\n", intel_dp->bd.id);
+ seq_printf(m, "\tHW revision: %.2d.%.2d\n",
+ intel_dp->bd.hw_rev & 0xf, (intel_dp->bd.hw_rev>>4)
& 0xf);
+ seq_printf(m, "\tSW revision: %.2d.%.2d\n",
+ intel_dp->bd.sw_rev[0], intel_dp->bd.sw_rev[1]);
+ }
+
if (intel_encoder->type == INTEL_OUTPUT_EDP)
intel_panel_info(m, &intel_connector->panel);
}
--
1.9.1
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