1 files changed, 135 insertions, 0 deletions
diff --git a/include/scmi_agent-uclass.h b/include/scmi_agent-uclass.h
new file mode 100644
index 00000000000..d6586eb3ff9
--- /dev/null
+++ b/include/scmi_agent-uclass.h
@@ -0,0 +1,135 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2019-2020 Linaro Limited.
+ */
+#ifndef _SCMI_AGENT_UCLASS_H
+#define _SCMI_AGENT_UCLASS_H
+
+#include <scmi_protocols.h>
+#include <dm/device.h>
+
+struct scmi_msg;
+struct scmi_channel;
+
+/**
+ * struct scmi_agent_priv - private data maintained by agent instance
+ * @version:		Version
+ * @num_agents:		Number of agents
+ * @num_protocols:	Number of protocols
+ * @impl_version:	Implementation version
+ * @protocols:		Array of protocol IDs
+ * @vendor:		Vendor name
+ * @sub_vendor:		Sub-vendor name
+ * @agent_name:		Agent name
+ * @agent_id:		Identifier of agent
+ * @base_dev:		SCMI base protocol device
+ * @pwdom_dev:		SCMI power domain management protocol device
+ * @clock_dev:		SCMI clock protocol device
+ * @resetdom_dev:	SCMI reset domain protocol device
+ * @voltagedom_dev:	SCMI voltage domain protocol device
+ * @pinctrl_dev:	SCMI pin control protocol device
+ */
+struct scmi_agent_priv {
+	u32 version;
+	u32 num_agents;
+	u32 num_protocols;
+	u32 impl_version;
+	u8 *protocols;
+	u8 *vendor;
+	u8 *sub_vendor;
+	u8 *agent_name;
+	u32 agent_id;
+	struct udevice *base_dev;
+	struct udevice *pwdom_dev;
+	struct udevice *clock_dev;
+	struct udevice *resetdom_dev;
+	struct udevice *voltagedom_dev;
+	struct udevice *pinctrl_dev;
+};
+
+static inline u32 scmi_version(struct udevice *dev)
+{
+	return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->version;
+}
+
+static inline u32 scmi_num_agents(struct udevice *dev)
+{
+	return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->num_agents;
+}
+
+static inline u32 scmi_num_protocols(struct udevice *dev)
+{
+	return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->num_protocols;
+}
+
+static inline u32 scmi_impl_version(struct udevice *dev)
+{
+	return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->impl_version;
+}
+
+static inline u8 *scmi_protocols(struct udevice *dev)
+{
+	return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->protocols;
+}
+
+static inline u8 *scmi_vendor(struct udevice *dev)
+{
+	return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->vendor;
+}
+
+static inline u8 *scmi_sub_vendor(struct udevice *dev)
+{
+	return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->sub_vendor;
+}
+
+static inline u8 *scmi_agent_name(struct udevice *dev)
+{
+	return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->agent_name;
+}
+
+static inline u32 scmi_agent_id(struct udevice *dev)
+{
+	return ((struct scmi_agent_priv *)dev_get_uclass_plat(dev))->agent_id;
+}
+
+/**
+ * struct scmi_transport_ops - The functions that a SCMI transport layer must implement.
+ */
+struct scmi_agent_ops {
+	/*
+	 * of_get_channel - Get SCMI channel from SCMI agent device tree node
+	 *
+	 * @dev:		SCMI agent device using the transport
+	 * @protocol:		SCMI protocol device using the transport
+	 * @channel:		Output reference to SCMI channel upon success
+	 * Return 0 upon success and a negative errno on failure
+	 */
+	int (*of_get_channel)(struct udevice *dev, struct udevice *protocol,
+			      struct scmi_channel **channel);
+
+	/*
+	 * process_msg - Request transport to get the SCMI message processed
+	 *
+	 * @dev:		SCMI agent device using the transport
+	 * @msg:		SCMI message to be transmitted
+	 */
+	int (*process_msg)(struct udevice *dev, struct scmi_channel *channel,
+			   struct scmi_msg *msg);
+};
+
+struct scmi_proto_match {
+	unsigned int proto_id;
+};
+
+struct scmi_proto_driver {
+	struct driver *driver;
+	const struct scmi_proto_match *match;
+};
+
+#define U_BOOT_SCMI_PROTO_DRIVER(__name, __match) \
+	ll_entry_declare(struct scmi_proto_driver, __name, scmi_proto_driver) = { \
+		.driver = llsym(struct driver, __name, driver), \
+		.match = __match, \
+	}
+
+#endif /* _SCMI_TRANSPORT_UCLASS_H */