Implements a function to detect the sink and src's hdcp1.4
capabilities.
v2:
const qualifier is maintained at init.
Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_drv.h | 1 +
drivers/gpu/drm/i915/intel_hdcp.c | 33 +++++++++++++++++++++++++++------
2 files changed, 28 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index b2ca9f278b36..b97d32bb7ff4 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1956,6 +1956,7 @@ 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..deca5581cde3 100644
--- a/drivers/gpu/drm/i915/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/intel_hdcp.c
@@ -17,6 +17,12 @@
#define KEY_LOAD_TRIES 5
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
bool intel_hdcp_is_ksv_valid(u8 *ksv)
{
int i, ones = 0;
@@ -51,6 +57,27 @@ 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 +659,6 @@ 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;
--
2.7.4
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