firmware: scmi: use scmi_proto_driver_get() function to get SCMI protocol driver

If there is a SoC specific SCMI protocol driver, using
scmi_proto_driver_get() function can avoid to add SoC specific code to
scmi_agent-uclass.c.

Signed-off-by: Alice Guo <alice.guo@nxp.com>

drivers/clk/clk_scmi.c

@@ -8,6 +8,7 @@
 #include <clk-uclass.h>
 #include <dm.h>
 #include <scmi_agent.h>
+#include <scmi_agent-uclass.h>
 #include <scmi_protocols.h>
 #include <asm/types.h>
 #include <linux/clk-provider.h>
@@ -191,3 +192,10 @@ U_BOOT_DRIVER(scmi_clock) = {
 	.ops = &scmi_clk_ops,
 	.probe = scmi_clk_probe,
 };
+
+static struct scmi_proto_match match[] = {
+	{ .proto_id = SCMI_PROTOCOL_ID_CLOCK },
+	{ /* Sentinel */ }
+};
+
+U_BOOT_SCMI_PROTO_DRIVER(scmi_clock, match);

drivers/firmware/scmi/scmi_agent-uclass.c

@@ -425,31 +425,11 @@ static int scmi_bind_protocols(struct udevice *dev)
 
 		drv = NULL;
 		name = ofnode_get_name(node);
-		switch (protocol_id) {
-		case SCMI_PROTOCOL_ID_POWER_DOMAIN:
-			if (CONFIG_IS_ENABLED(SCMI_POWER_DOMAIN) &&
-			    scmi_protocol_is_supported(dev, protocol_id))
-				drv = DM_DRIVER_GET(scmi_power_domain);
-			break;
-		case SCMI_PROTOCOL_ID_CLOCK:
-			if (CONFIG_IS_ENABLED(CLK_SCMI) &&
-			    scmi_protocol_is_supported(dev, protocol_id))
-				drv = DM_DRIVER_GET(scmi_clock);
-			break;
-		case SCMI_PROTOCOL_ID_RESET_DOMAIN:
-			if (IS_ENABLED(CONFIG_RESET_SCMI) &&
-			    scmi_protocol_is_supported(dev, protocol_id))
-				drv = DM_DRIVER_GET(scmi_reset_domain);
-			break;
-		case SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN:
-			if (IS_ENABLED(CONFIG_DM_REGULATOR_SCMI) &&
-			    scmi_protocol_is_supported(dev, protocol_id))
-				drv = DM_DRIVER_GET(scmi_voltage_domain);
-			break;
-		default:
-			break;
-		}
 
+		if (!scmi_protocol_is_supported(dev, protocol_id))
+			continue;
+
+		drv = scmi_proto_driver_get(protocol_id);
 		if (!drv) {
 			dev_dbg(dev, "Ignore unsupported SCMI protocol %#x\n",
 				protocol_id);

drivers/power/domain/scmi-power-domain.c

@@ -11,6 +11,7 @@
 #include <power-domain.h>
 #include <power-domain-uclass.h>
 #include <scmi_agent.h>
+#include <scmi_agent-uclass.h>
 #include <scmi_protocols.h>
 #include <dm/device_compat.h>
 
@@ -190,3 +191,10 @@ U_BOOT_DRIVER(scmi_power_domain) = {
 	.probe = scmi_power_domain_probe,
 	.priv_auto = sizeof(struct scmi_power_domain_priv),
 };
+
+static struct scmi_proto_match match[] = {
+	{ .proto_id = SCMI_PROTOCOL_ID_POWER_DOMAIN },
+	{ /* Sentinel */ }
+};
+
+U_BOOT_SCMI_PROTO_DRIVER(scmi_power_domain, match);

drivers/power/regulator/scmi_regulator.c

@@ -8,6 +8,7 @@
 #include <dm.h>
 #include <errno.h>
 #include <scmi_agent.h>
+#include <scmi_agent-uclass.h>
 #include <scmi_protocols.h>
 #include <asm/types.h>
 #include <dm/device.h>
@@ -202,3 +203,10 @@ U_BOOT_DRIVER(scmi_voltage_domain) = {
 	.id = UCLASS_NOP,
 	.bind = scmi_regulator_bind,
 };
+
+static struct scmi_proto_match match[] = {
+	{ .proto_id = SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN },
+	{ /* Sentinel */ }
+};
+
+U_BOOT_SCMI_PROTO_DRIVER(scmi_voltage_domain, match);

drivers/reset/reset-scmi.c

@@ -9,6 +9,7 @@
 #include <errno.h>
 #include <reset-uclass.h>
 #include <scmi_agent.h>
+#include <scmi_agent-uclass.h>
 #include <scmi_protocols.h>
 #include <asm/types.h>
 
@@ -81,3 +82,10 @@ U_BOOT_DRIVER(scmi_reset_domain) = {
 	.ops = &scmi_reset_domain_ops,
 	.probe = scmi_reset_probe,
 };
+
+static struct scmi_proto_match match[] = {
+	{ .proto_id = SCMI_PROTOCOL_ID_RESET_DOMAIN },
+	{ /* Sentinel */ }
+};
+
+U_BOOT_SCMI_PROTO_DRIVER(scmi_reset_domain, match);