[PATCH v4 04/20] firmware: scmi: add pin control protocol support to SCMI agent

[Alice Guo]

From: Alice Guo <alice.guo at nxp.com>

This patch adds SCMI pin control protocol support so that the pin
controller driver based on SCMI, such as
drivers/pinctrl/nxp/pinctrl-scmi.c, can be bound to the SCMI agent
device whose protocol id is 0x19.

Signed-off-by: Alice Guo <alice.guo at nxp.com>
---
 drivers/firmware/scmi/scmi_agent-uclass.c | 11 +++++++++++
 include/scmi_agent-uclass.h               |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/drivers/firmware/scmi/scmi_agent-uclass.c b/drivers/firmware/scmi/scmi_agent-uclass.c
index 8c907c3b0328095c4b35ba089ed608fcda48b567..5f101f4ede8b585f8c562a42886ea7be4ef09953 100644
--- a/drivers/firmware/scmi/scmi_agent-uclass.c
+++ b/drivers/firmware/scmi/scmi_agent-uclass.c
@@ -97,6 +97,9 @@ struct udevice *scmi_get_protocol(struct udevice *dev,
 	case SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN:
 		proto = priv->voltagedom_dev;
 		break;
+	case SCMI_PROTOCOL_ID_PINCTRL:
+		proto = priv->pinctrl_dev;
+		break;
 	default:
 		dev_err(dev, "Protocol not supported\n");
 		proto = NULL;
@@ -147,6 +150,9 @@ static int scmi_add_protocol(struct udevice *dev,
 	case SCMI_PROTOCOL_ID_VOLTAGE_DOMAIN:
 		priv->voltagedom_dev = proto;
 		break;
+	case SCMI_PROTOCOL_ID_PINCTRL:
+		priv->pinctrl_dev = proto;
+		break;
 	default:
 		dev_err(dev, "Protocol not supported\n");
 		return -EPROTO;
@@ -436,6 +442,11 @@ static int scmi_bind_protocols(struct udevice *dev)
 				drv = DM_DRIVER_GET(scmi_voltage_domain);
 			}
 			break;
+		case SCMI_PROTOCOL_ID_PINCTRL:
+			if (IS_ENABLED(CONFIG_PINCTRL_IMX_SCMI) &&
+			    scmi_protocol_is_supported(dev, protocol_id))
+				drv = DM_DRIVER_GET(scmi_pinctrl_imx);
+			break;
 		default:
 			break;
 		}
diff --git a/include/scmi_agent-uclass.h b/include/scmi_agent-uclass.h
index 33e0e18c30d4ae4ddaaa2cb3830c03cd7a559cc0..4beec43cb080b14a777cac1cb0f18ef53433596c 100644
--- a/include/scmi_agent-uclass.h
+++ b/include/scmi_agent-uclass.h
@@ -27,6 +27,7 @@ struct scmi_channel;
  * @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;
@@ -43,6 +44,7 @@ struct scmi_agent_priv {
 	struct udevice *clock_dev;
 	struct udevice *resetdom_dev;
 	struct udevice *voltagedom_dev;
+	struct udevice *pinctrl_dev;
 };
 
 static inline u32 scmi_version(struct udevice *dev)

-- 
2.34.1