[PATCH i-g-t 2/4] lib/unigraf: Add HDCP management

From: fomys <[email protected]>

Unigraf is able to emulate HDCP, so add few helpers to enable/disable
it.

Signed-off-by: Louis Chauvet <[email protected]>
---
 lib/vendor/unigraf/unigraf.c | 23 ++++++++++++++++++++++-
 lib/vendor/unigraf/unigraf.h |  4 ++++
 2 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/lib/vendor/unigraf/unigraf.c b/lib/vendor/unigraf/unigraf.c
index 30ee3c72bc74..5b416f605428 100644
--- a/lib/vendor/unigraf/unigraf.c
+++ b/lib/vendor/unigraf/unigraf.c
@@ -549,9 +549,10 @@ void unigraf_reset(void)
 	unigraf_set_mst_stream_count(1);
 	unigraf_set_sst();
 	unigraf_load_default_edid();
-	unigraf_hpd_assert();
 	unigraf_set_max_lane_count(4);
 	unigraf_set_max_link_rate(UNIGRAF_RATE_8_10_GHZ);
+	unigraf_enable_hdcp();
+	unigraf_hpd_assert();
 }
 
 /**
@@ -911,3 +912,23 @@ int unigraf_rate_to_kbs(enum unigraf_rate rate)
 		return 0;
 	}
 }
+
+/**
+ * unigraf_enable_hdcp - Enable HDCP 2 support
+ *
+ * Unigraf is able to load production keys, but this will disable all recording
+ * features.
+ */
+void unigraf_enable_hdcp(void)
+{
+	unigraf_write_u32(TSI_HDCP_2X_COMMAND_W, H2_SINK_LOAD_PROD_KEYS);
+	unigraf_write_u32(TSI_HDCP_2X_COMMAND_W, H2_SINK_SET_CAPABLE);
+}
+
+/**
+ * unigraf_disable_hdcp - Disable HDCP support
+ */
+void unigraf_disable_hdcp(void)
+{
+	unigraf_write_u32(TSI_HDCP_2X_COMMAND_W, H2_SINK_CLEAR_CAPABLE);
+}
diff --git a/lib/vendor/unigraf/unigraf.h b/lib/vendor/unigraf/unigraf.h
index 1570be3feb96..498a2d4daab3 100644
--- a/lib/vendor/unigraf/unigraf.h
+++ b/lib/vendor/unigraf/unigraf.h
@@ -103,4 +103,8 @@ uint32_t unigraf_get_lt_rate(void);
 
 uint32_t unigraf_get_lt_lane_count(void);
 
+void unigraf_enable_hdcp(void);
+
+void unigraf_disable_hdcp(void);
+
 #endif // UNIGRAF_H

-- 
2.54.0