[PATCH 14/17] drm/i915: Add debugfs function to check connector status for compliance testing

Todd Previte
2014-12-10T23:54:21Z

Adds a function to check the status of a Displayport connector. This function
simplifies the Displayport compliance testing interface in debugfs by providing
a single method for determining the status of a connector during Displayport
compliance testing. This function checks whether or not the connector is a
Displayport connector and whether or not that connector is active.

Signed-off-by: Todd Previte <tprevite@gmail.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 5eb6c24..978ddd1 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -3920,6 +3920,35 @@ static int displayport_parse_config(char *input_buffer,
return status;
}

+static bool dp_connector_is_valid(struct drm_connector *connector,
+ bool check_active)
+{
+ struct intel_encoder *intel_encoder;
+ struct intel_connector *intel_connector;
+
+ intel_connector = to_intel_connector(connector);
+ intel_encoder = intel_connector->encoder;
+
+ if (connector->connector_type != DRM_MODE_CONNECTOR_DisplayPort)
+ goto no;
+
+ if (intel_encoder->type != INTEL_OUTPUT_DISPLAYPORT &&
+ intel_encoder->type != INTEL_OUTPUT_UNKNOWN)
+ goto no;
+
+ if (check_active) {
+ if (connector->status == connector_status_connected)
+ goto yes;
+ else
+ goto no;
+ }
+
+yes:
+ return true;
+no:
+ return false;
+}
+
static int displayport_config_ctl_show(struct seq_file *m, void *data)
{
struct drm_device *dev = m->private;
--
1.9.1