[RFC v1 01/20] drm/hdcp: HDCP bitmask property for connectors

[Ramalingam C <ramalingam.c@intel.com>]

DRM connector property is created as bitmask to receive
HDCP enable/disable request along with content type.

And also there are Read only status bits for
	1. HDCP spec capability of the connector + panel
	2. HDCP encryption status of the connector

Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
---
 drivers/gpu/drm/drm_connector.c | 30 +++++++++++++++++++++
 include/drm/drm_hdcp.h          | 58 +++++++++++++++++++++++++++++++++++++++++
 include/drm/drm_mode_config.h   |  5 ++++
 3 files changed, 93 insertions(+)
 create mode 100644 include/drm/drm_hdcp.h

diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index 8072e6e..04f8cf8 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -24,6 +24,7 @@
 #include <drm/drm_connector.h>
 #include <drm/drm_edid.h>
 #include <drm/drm_encoder.h>
+#include <drm/drm_hdcp.h>
 
 #include "drm_crtc_internal.h"
 #include "drm_internal.h"
@@ -617,6 +618,28 @@ static const struct drm_prop_enum_list drm_link_status_enum_list[] = {
 };
 DRM_ENUM_NAME_FN(drm_get_link_status_name, drm_link_status_enum_list)
 
+static const struct drm_prop_enum_list drm_hdcp_enum_list[] = {
+	{ __builtin_ffs(DRM_HDCP_ENABLE) - 1,
+					"Enable HDCP Encryption" },
+	{ __builtin_ffs(DRM_HDCP_TYPE_BIT0) - 1,
+					"HDCP Content type bit0" },
+	{ __builtin_ffs(DRM_HDCP_TYPE_BIT1) - 1,
+					"HDCP Content type bit1" },
+	{ __builtin_ffs(DRM_HDCP1_SUPPORTED) - 1,
+					"HDCP1.x Supported" },
+	{ __builtin_ffs(DRM_HDCP2_SUPPORTED) - 1,
+					"HDCP2.x Supported" },
+	{ __builtin_ffs(DRM_HDCP_WIP) - 1,
+					"HDCP work in progress" },
+	{ __builtin_ffs(DRM_HDCP_AUTH_FAILED) - 1,
+					"HDCP Authentication Failed" },
+	{ __builtin_ffs(DRM_HDCP_LINK_INTEGRITY_FAILED) - 1,
+					"HDCP Link Integrity Failed" },
+	{ __builtin_ffs(DRM_HDCP_REAUTH_REQUESTED) - 1,
+					"HDCP Reauthentication Requested" },
+};
+DRM_ENUM_NAME_FN(drm_get_hdcp_name, drm_hdcp_enum_list)
+
 /**
  * drm_display_info_set_bus_formats - set the supported bus formats
  * @info: display info to store bus formats in
@@ -789,6 +812,13 @@ int drm_connector_create_standard_properties(struct drm_device *dev)
 		return -ENOMEM;
 	dev->mode_config.link_status_property = prop;
 
+	prop = drm_property_create_bitmask(dev, 0, "hdcp", drm_hdcp_enum_list,
+					   ARRAY_SIZE(drm_hdcp_enum_list),
+					   DRM_HDCP_PROP_SUPPORTED_BITS);
+	if (!prop)
+		return -ENOMEM;
+	dev->mode_config.hdcp_property = prop;
+
 	return 0;
 }
 
diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h
new file mode 100644
index 0000000..7cebf0f
--- /dev/null
+++ b/include/drm/drm_hdcp.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2017 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+/*
+ * Header for HDCP specific data
+ */
+
+#ifndef __DRM_HDCP_H__
+#define __DRM_HDCP_H__
+
+/**
+ * HDCP property related information
+ */
+/* RW: HDCP Encryption Requests and Status bits */
+#define DRM_HDCP_ENABLE				BIT(0)
+#define DRM_HDCP_TYPE_BIT0			BIT(4)
+#define DRM_HDCP_TYPE_BIT1			BIT(5)
+
+/* RO: HDCP Version supported on Platform + panel */
+#define DRM_HDCP1_SUPPORTED			BIT(12)
+#define DRM_HDCP2_SUPPORTED			BIT(13)
+
+/* RO: Status of the requested operations */
+#define DRM_HDCP_WIP				BIT(20)
+#define DRM_HDCP_AUTH_FAILED			BIT(21)
+
+/* RO: Error Status From HDCP sink */
+#define DRM_HDCP_LINK_INTEGRITY_FAILED		BIT(22)
+#define DRM_HDCP_REAUTH_REQUESTED		BIT(23)
+
+#define DRM_HDCP_PROP_SUPPORTED_BITS	(DRM_HDCP_ENABLE | DRM_HDCP_TYPE_BIT0 \
+					| DRM_HDCP_TYPE_BIT1 | \
+					DRM_HDCP1_SUPPORTED | \
+					DRM_HDCP2_SUPPORTED | DRM_HDCP_WIP | \
+					DRM_HDCP_AUTH_FAILED | \
+					DRM_HDCP_LINK_INTEGRITY_FAILED | \
+					DRM_HDCP_REAUTH_REQUESTED)
+
+#endif	/* __DRM_HDCP_H__ */
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index 4298171..0c5bb90 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -538,6 +538,11 @@ struct drm_mode_config {
 	 */
 	struct drm_property *link_status_property;
 	/**
+	 * @hdcp_property: Default connector property for HDCP
+	 * of a connector
+	 */
+	struct drm_property *hdcp_property;
+	/**
 	 * @plane_type_property: Default plane property to differentiate
 	 * CURSOR, PRIMARY and OVERLAY legacy uses of planes.
 	 */
-- 
2.7.4

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