Add a debugfs entry for providing the hdcp capabilities of the sink
connected to the HDCP capable connectors.
v2:
Squashed the sink's hdcp capability into this patch. [Daniel]
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 29 +++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_drv.h | 7 +++++++
drivers/gpu/drm/i915/intel_hdcp.c | 27 +++++++++++++++++++++------
drivers/gpu/drm/i915/intel_hdmi.c | 16 +++++++++++++++-
4 files changed, 72 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 5f3c639522fa..6d09af66da0f 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -4946,6 +4946,28 @@ static int i915_panel_show(struct seq_file *m, void *data)
}
DEFINE_SHOW_ATTRIBUTE(i915_panel);
+static int i915_hdcp_sink_capability_show(struct seq_file *m, void *data)
+{
+ struct drm_connector *connector = m->private;
+ struct intel_connector *intel_connector = to_intel_connector(connector);
+
+ if (connector->status != connector_status_connected)
+ return -ENODEV;
+
+ /* HDCP is supported by connector */
+ if (!intel_connector->hdcp_shim)
+ return -EINVAL;
+
+ seq_printf(m, "%s:%d HDCP version: ", connector->name,
+ connector->base.id);
+ seq_printf(m, "%s ", !intel_hdcp_capable(intel_connector) ?
+ "None" : "HDCP1.4");
+ seq_puts(m, "\n");
+
+ return 0;
+}
+DEFINE_SHOW_ATTRIBUTE(i915_hdcp_sink_capability);
+
/**
* i915_debugfs_connector_add - add i915 specific connector debugfs files
* @connector: pointer to a registered drm_connector
@@ -4975,5 +4997,12 @@ int i915_debugfs_connector_add(struct drm_connector *connector)
connector, &i915_psr_sink_status_fops);
}
+ if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort ||
+ connector->connector_type == DRM_MODE_CONNECTOR_HDMIA ||
+ connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) {
+ debugfs_create_file("i915_hdcp_sink_capability", S_IRUGO, root,
+ connector, &i915_hdcp_sink_capability_fops);
+ }
+
return 0;
}
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index b2ca9f278b36..249bb9d1b5d0 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1296,6 +1296,12 @@ enc_to_dig_port(struct drm_encoder *encoder)
return NULL;
}
+static inline struct intel_digital_port *
+conn_to_dig_port(struct intel_connector *connector)
+{
+ return enc_to_dig_port(&intel_attached_encoder(&connector->base)->base);
+}
+
static inline struct intel_dp_mst_encoder *
enc_to_mst(struct drm_encoder *encoder)
{
@@ -1956,6 +1962,7 @@ int intel_hdcp_enable(struct intel_connector *connector);
int intel_hdcp_disable(struct intel_connector *connector);
int intel_hdcp_check_link(struct intel_connector *connector);
bool is_hdcp_supported(struct drm_i915_private *dev_priv, enum port port);
+bool intel_hdcp_capable(struct intel_connector *connector);
/* intel_psr.c */
#define CAN_PSR(dev_priv) (HAS_PSR(dev_priv) && dev_priv->psr.sink_support)
diff --git a/drivers/gpu/drm/i915/intel_hdcp.c b/drivers/gpu/drm/i915/intel_hdcp.c
index 20908ff018e6..283b45636668 100644
--- a/drivers/gpu/drm/i915/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/intel_hdcp.c
@@ -51,6 +51,27 @@ int intel_hdcp_read_valid_bksv(struct intel_digital_port *intel_dig_port,
return 0;
}
+/* Is HDCP1.4 capable on Platform and Sink */
+bool intel_hdcp_capable(struct intel_connector *connector)
+{
+ struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector);
+ const struct intel_hdcp_shim *shim = connector->hdcp_shim;
+ bool capable = false;
+ u8 bksv[5];
+
+ if (!shim)
+ return capable;
+
+ if (shim->hdcp_capable) {
+ shim->hdcp_capable(intel_dig_port, &capable);
+ } else {
+ if (!intel_hdcp_read_valid_bksv(intel_dig_port, shim, bksv))
+ capable = true;
+ }
+
+ return capable;
+}
+
static int intel_hdcp_poll_ksv_fifo(struct intel_digital_port *intel_dig_port,
const struct intel_hdcp_shim *shim)
{
@@ -632,12 +653,6 @@ static int intel_hdcp_auth(struct intel_digital_port *intel_dig_port,
return 0;
}
-static
-struct intel_digital_port *conn_to_dig_port(struct intel_connector *connector)
-{
- return enc_to_dig_port(&intel_attached_encoder(&connector->base)->base);
-}
-
static int _intel_hdcp_disable(struct intel_connector *connector)
{
struct drm_i915_private *dev_priv = connector->base.dev->dev_private;
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 89d5e3984452..72e8a73dfa1c 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -2072,6 +2072,20 @@ static void chv_hdmi_pre_enable(struct intel_encoder *encoder,
chv_phy_release_cl2_override(encoder);
}
+static int
+intel_hdmi_connector_register(struct drm_connector *connector)
+{
+ int ret;
+
+ ret = intel_connector_register(connector);
+ if (ret)
+ return ret;
+
+ i915_debugfs_connector_add(connector);
+
+ return ret;
+}
+
static void intel_hdmi_destroy(struct drm_connector *connector)
{
if (intel_attached_hdmi(connector)->cec_notifier)
@@ -2086,7 +2100,7 @@ static const struct drm_connector_funcs intel_hdmi_connector_funcs = {
.fill_modes = drm_helper_probe_single_connector_modes,
.atomic_get_property = intel_digital_connector_atomic_get_property,
.atomic_set_property = intel_digital_connector_atomic_set_property,
- .late_register = intel_connector_register,
+ .late_register = intel_hdmi_connector_register,
.early_unregister = intel_connector_unregister,
.destroy = intel_hdmi_destroy,
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
--
2.7.4
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