clk: scmi: register scmi clocks with CCF
Implements SCMI APIs to retrieve the number exposed SCMI clocks using
SCMI_PROTOCOL_ATTRIBUTES messages and the names of the clocks using
SCMI_CLOCK_ATTRIBUTES messages.
This change updates sandbox SCMI clock test driver to manage these
2 new message IDs.
Cc: Lukasz Majewski <lukma@denx.de>
Cc: Sean Anderson <seanga2@gmail.com>
Cc: Clement Leger <clement.leger@bootlin.com>
Cc: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@linaro.org>
diff --git a/include/scmi_protocols.h b/include/scmi_protocols.h
index ef26e72..a220cb2 100644
--- a/include/scmi_protocols.h
+++ b/include/scmi_protocols.h
@@ -41,21 +41,64 @@
};
/*
+ * Generic message IDs
+ */
+enum scmi_discovery_id {
+ SCMI_PROTOCOL_VERSION = 0x0,
+ SCMI_PROTOCOL_ATTRIBUTES = 0x1,
+ SCMI_PROTOCOL_MESSAGE_ATTRIBUTES = 0x2,
+};
+
+/*
* SCMI Clock Protocol
*/
enum scmi_clock_message_id {
+ SCMI_CLOCK_ATTRIBUTES = 0x3,
SCMI_CLOCK_RATE_SET = 0x5,
SCMI_CLOCK_RATE_GET = 0x6,
SCMI_CLOCK_CONFIG_SET = 0x7,
};
+#define SCMI_CLK_PROTO_ATTR_COUNT_MASK GENMASK(15, 0)
#define SCMI_CLK_RATE_ASYNC_NOTIFY BIT(0)
#define SCMI_CLK_RATE_ASYNC_NORESP (BIT(0) | BIT(1))
#define SCMI_CLK_RATE_ROUND_DOWN 0
#define SCMI_CLK_RATE_ROUND_UP BIT(2)
#define SCMI_CLK_RATE_ROUND_CLOSEST BIT(3)
+#define SCMI_CLOCK_NAME_LENGTH_MAX 16
+
+/**
+ * struct scmi_clk_get_nb_out - Response for SCMI_PROTOCOL_ATTRIBUTES command
+ * @status: SCMI command status
+ * @attributes: Attributes of the clock protocol, mainly number of clocks exposed
+ */
+struct scmi_clk_protocol_attr_out {
+ s32 status;
+ u32 attributes;
+};
+
+/**
+ * struct scmi_clk_attribute_in - Message payload for SCMI_CLOCK_ATTRIBUTES command
+ * @clock_id: SCMI clock ID
+ */
+struct scmi_clk_attribute_in {
+ u32 clock_id;
+};
+
+/**
+ * struct scmi_clk_get_nb_out - Response payload for SCMI_CLOCK_ATTRIBUTES command
+ * @status: SCMI command status
+ * @attributes: clock attributes
+ * @clock_name: name of the clock
+ */
+struct scmi_clk_attribute_out {
+ s32 status;
+ u32 attributes;
+ char clock_name[SCMI_CLOCK_NAME_LENGTH_MAX];
+};
+
/**
* struct scmi_clk_state_in - Message payload for CLOCK_CONFIG_SET command
* @clock_id: SCMI clock ID