diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
index abe38bdf85ae6872ef31a0cb76c8ded6cd774b3b..19ae119f1a5daba4c33a5881309e8ac103c53e56 100644
--- a/drivers/gpu/drm/drm_atomic_uapi.c
+++ b/drivers/gpu/drm/drm_atomic_uapi.c
@@ -747,6 +747,8 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector,
return -EINVAL;
}
state->content_protection = val;
+ } else if (property == config->hdcp_content_type_property) {
+ state->hdcp_content_type = val;
} else if (property == connector->colorspace_property) {
state->colorspace = val;
} else if (property == config->writeback_fb_id_property) {
@@ -831,6 +833,8 @@ drm_atomic_connector_get_property(struct drm_connector *connector,
state->hdr_output_metadata->base.id : 0;
} else if (property == config->content_protection_property) {
*val = state->content_protection;
+ } else if (property == config->hdcp_content_type_property) {
+ *val = state->hdcp_content_type;
} else if (property == config->writeback_fb_id_property) {
/* Writeback framebuffer is one-shot, write and forget */
*val = 0;
diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c
index d49e19f3de3ad2560b6a75a96ffc72b096940f00..cddb97f754154abf6651bc5d7ab2052e4f98cd3f 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -988,6 +988,57 @@ static const struct drm_prop_enum_list hdmi_colorspaces[] = {
* is no longer protected and userspace should take appropriate action
* (whatever that might be).
*
+ * HDCP Content Type:
+ * This Enum property is used by the userspace to declare the content type
+ * of the display stream, to kernel. Here display stream stands for any
+ * display content that userspace intended to display through HDCP
+ * encryption.
+ *
+ * Content Type of a stream is decided by the owner of the stream, as
+ * "HDCP Type0" or "HDCP Type1".
+ *
+ * The value of the property can be one of the below:
+ * - "HDCP Type0": DRM_MODE_HDCP_CONTENT_TYPE0 = 0
+ * - "HDCP Type1": DRM_MODE_HDCP_CONTENT_TYPE1 = 1
+ *
+ * When kernel starts the HDCP authentication (see "Content Protection"
+ * for details), it uses the content type in "HDCP Content Type"
+ * for performing the HDCP authentication with the display sink.
+ *
+ * Please note in HDCP spec versions, a link can be authenticated with
+ * HDCP 2.2 for Content Type 0/Content Type 1. Where as a link can be
+ * authenticated with HDCP1.4 only for Content Type 0(though it is implicit
+ * in nature. As there is no reference for Content Type in HDCP1.4).
+ *
+ * HDCP2.2 authentication protocol itself takes the "Content Type" as a
+ * parameter, which is a input for the DP HDCP2.2 encryption algo.
+ *
+ * In case of Type 0 content protection request, kernel driver can choose
+ * either of HDCP spec versions 1.4 and 2.2. When HDCP2.2 is used for
+ * "HDCP Type 0", a HDCP 2.2 capable repeater in the downstream can send
+ * that content to a HDCP 1.4 authenticated HDCP sink (Type0 link).
+ * But if the content is classified as "HDCP Type 1", above mentioned
+ * HDCP 2.2 repeater wont send the content to the HDCP sink as it can't
+ * authenticate the HDCP1.4 capable sink for "HDCP Type 1".
+ *
+ * Please note userspace can be ignorant of the HDCP versions used by the
+ * kernel driver to achieve the "HDCP Content Type".
+ *
+ * At current scenario, classifying a content as Type 1 ensures that the
+ * content will be displayed only through the HDCP2.2 encrypted link.
+ *
+ * Note that the HDCP Content Type property is introduced at HDCP 2.2, and
+ * defaults to type 0. It is only exposed by drivers supporting HDCP 2.2
+ * (hence supporting Type 0 and Type 1). Based on how next versions of
+ * HDCP specs are defined content Type could be used for higher versions
+ * too.
+ *
+ * If content type is changed when "Content Protection" is not UNDESIRED,
+ * then kernel will disable the HDCP and re-enable with new type in the
+ * same atomic commit. And when "Content Protection" is ENABLED, it means
+ * that link is HDCP authenticated and encrypted, for the transmission of
+ * the Type of stream mentioned at "HDCP Content Type".
+ *
* HDR_OUTPUT_METADATA:
* Connector property to enable userspace to send HDR Metadata to
* driver. This metadata is based on the composition and blending
diff --git a/drivers/gpu/drm/drm_hdcp.c b/drivers/gpu/drm/drm_hdcp.c
index cd837bd409f730483519728d54517079663b298b..ce235fd1c84447aad2058b628928954167efd188 100644
--- a/drivers/gpu/drm/drm_hdcp.c
+++ b/drivers/gpu/drm/drm_hdcp.c
@@ -344,23 +344,41 @@ static struct drm_prop_enum_list drm_cp_enum_list[] = {
};
DRM_ENUM_NAME_FN(drm_get_content_protection_name, drm_cp_enum_list)
+static struct drm_prop_enum_list drm_hdcp_content_type_enum_list[] = {
+ { DRM_MODE_HDCP_CONTENT_TYPE0, "HDCP Type0" },
+ { DRM_MODE_HDCP_CONTENT_TYPE1, "HDCP Type1" },
+};
+DRM_ENUM_NAME_FN(drm_get_hdcp_content_type_name,
+ drm_hdcp_content_type_enum_list)
+
/**
* drm_connector_attach_content_protection_property - attach content protection
* property
*
* @connector: connector to attach CP property on.
+ * @hdcp_content_type: is HDCP Content Type property needed for connector
*
* This is used to add support for content protection on select connectors.
* Content Protection is intentionally vague to allow for different underlying
* technologies, however it is most implemented by HDCP.
*
+ * When hdcp_content_type is true enum property called HDCP Content Type is
+ * created (if it is not already) and attached to the connector.
+ *
+ * This property is used for sending the protected content's stream type
+ * from userspace to kernel on selected connectors. Protected content provider
+ * will decide their type of their content and declare the same to kernel.
+ *
+ * Content type will be used during the HDCP 2.2 authentication.
+ * Content type will be set to &drm_connector_state.hdcp_content_type.
+ *
* The content protection will be set to &drm_connector_state.content_protection
*
* Returns:
* Zero on success, negative errno on failure.
*/
int drm_connector_attach_content_protection_property(
- struct drm_connector *connector)
+ struct drm_connector *connector, bool hdcp_content_type)
{
struct drm_device *dev = connector->dev;
struct drm_property *prop =
@@ -377,6 +395,22 @@ int drm_connector_attach_content_protection_property(
DRM_MODE_CONTENT_PROTECTION_UNDESIRED);
dev->mode_config.content_protection_property = prop;
+ if (!hdcp_content_type)
+ return 0;
+
+ prop = dev->mode_config.hdcp_content_type_property;
+ if (!prop)
+ prop = drm_property_create_enum(dev, 0, "HDCP Content Type",
+ drm_hdcp_content_type_enum_list,
+ ARRAY_SIZE(
+ drm_hdcp_content_type_enum_list));
+ if (!prop)
+ return -ENOMEM;
+
+ drm_object_attach_property(&connector->base, prop,
+ DRM_MODE_HDCP_CONTENT_TYPE0);
+ dev->mode_config.hdcp_content_type_property = prop;
+
return 0;
}
EXPORT_SYMBOL(drm_connector_attach_content_protection_property);
diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index bc3a94d491c4d0992b24346d011840318ade13d2..2a4d10952b7423a4e175da6eb2b5df76f09e7f5c 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -1829,7 +1829,9 @@ int intel_hdcp_init(struct intel_connector *connector,
if (!shim)
return -EINVAL;
- ret = drm_connector_attach_content_protection_property(&connector->base);
+ ret =
+ drm_connector_attach_content_protection_property(&connector->base,
+ false);
if (ret)
return ret;
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index fc5d08438333397feffce4bd4ddbf6afc1863172..0b9997e276890ceeeb9b4e6c3a19633ee6a8df1d 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -602,6 +602,12 @@ struct drm_connector_state {
*/
unsigned int content_type;
+ /**
+ * @hdcp_content_type: Connector property to pass the type of
+ * protected content. This is most commonly used for HDCP.
+ */
+ unsigned int hdcp_content_type;
+
/**
* @scaling_mode: Connector property to control the
* upscaling, mostly used for built-in panels.
@@ -1502,6 +1508,7 @@ const char *drm_get_dvi_i_select_name(int val);
const char *drm_get_tv_subconnector_name(int val);
const char *drm_get_tv_select_name(int val);
const char *drm_get_content_protection_name(int val);
+const char *drm_get_hdcp_content_type_name(int val);
int drm_mode_create_dvi_i_properties(struct drm_device *dev);
int drm_mode_create_tv_margin_properties(struct drm_device *dev);
diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h
index 13771a496e2b7d9c0abee98524ca2b4e23a8addf..82447af98aa26390989f752202c6f901cb98d961 100644
--- a/include/drm/drm_hdcp.h
+++ b/include/drm/drm_hdcp.h
@@ -291,5 +291,10 @@ struct drm_connector;
bool drm_hdcp_check_ksvs_revoked(struct drm_device *dev,
u8 *ksvs, u32 ksv_count);
int drm_connector_attach_content_protection_property(
- struct drm_connector *connector);
+ struct drm_connector *connector, bool hdcp_content_type);
+
+/* Content Type classification for HDCP2.2 vs others */
+#define DRM_MODE_HDCP_CONTENT_TYPE0 0
+#define DRM_MODE_HDCP_CONTENT_TYPE1 1
+
#endif
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index f57eea0481e0fd18a79d0c1178108619ae5e0a38..3bcbe30339f044cd18d7bef994b8d98271ca9eca 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -849,6 +849,12 @@ struct drm_mode_config {
*/
struct drm_property *content_protection_property;
+ /**
+ * @hdcp_content_type_property: DRM ENUM property for type of
+ * Protected Content.
+ */
+ struct drm_property *hdcp_content_type_property;
+
/* dumb ioctl parameters */
uint32_t preferred_depth, prefer_shadow;