1 files changed, 65 insertions, 0 deletions
diff --git a/plat/rockchip/rk3399/drivers/dp/cdn_dp.c b/plat/rockchip/rk3399/drivers/dp/cdn_dp.c
new file mode 100644
index 00000000..d0e59861
--- /dev/null
+++ b/plat/rockchip/rk3399/drivers/dp/cdn_dp.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <cdn_dp.h>
+#include <smcc.h>
+#include <stdlib.h>
+#include <string.h>
+
+__asm__(
+	".pushsection .text.hdcp_handler, \"ax\", %progbits\n"
+	".global hdcp_handler\n"
+	".balign 4\n"
+	"hdcp_handler:\n"
+	".incbin \"" __XSTRING(HDCPFW) "\"\n"
+	".type hdcp_handler, %function\n"
+	".size hdcp_handler, .- hdcp_handler\n"
+	".popsection\n"
+);
+
+static uint64_t *hdcp_key_pdata;
+static struct cdn_dp_hdcp_key_1x key;
+
+int hdcp_handler(struct cdn_dp_hdcp_key_1x *key);
+
+uint64_t dp_hdcp_ctrl(uint64_t type)
+{
+	switch (type) {
+	case HDCP_KEY_DATA_START_TRANSFER:
+		memset(&key, 0x00, sizeof(key));
+		hdcp_key_pdata = (uint64_t *)&key;
+		return 0;
+	case HDCP_KEY_DATA_START_DECRYPT:
+		if (hdcp_key_pdata == (uint64_t *)(&key + 1))
+			return hdcp_handler(&key);
+		else
+			return PSCI_E_INVALID_PARAMS;
+	default:
+		return SMC_UNK;
+	}
+}
+
+uint64_t dp_hdcp_store_key(uint64_t x1,
+			   uint64_t x2,
+			   uint64_t x3,
+			   uint64_t x4,
+			   uint64_t x5,
+			   uint64_t x6)
+{
+	if (hdcp_key_pdata < (uint64_t *)&key ||
+		hdcp_key_pdata + 6 > (uint64_t *)(&key + 1))
+		return PSCI_E_INVALID_PARAMS;
+
+	hdcp_key_pdata[0] = x1;
+	hdcp_key_pdata[1] = x2;
+	hdcp_key_pdata[2] = x3;
+	hdcp_key_pdata[3] = x4;
+	hdcp_key_pdata[4] = x5;
+	hdcp_key_pdata[5] = x6;
+	hdcp_key_pdata += 6;
+
+	return 0;
+}