From c2f86b643880b83936a1fd7ea49d1c19410aed9c Mon Sep 17 00:00:00 2001
From: rjkm <none>
Date: Sat, 12 Feb 2022 16:39:01 +0100
Subject: [PATCH] add MCI ioctl to be used through modX devices

---
 ddbridge/ddbridge-modulator.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/ddbridge/ddbridge-modulator.c b/ddbridge/ddbridge-modulator.c
index 12f57e4..35d1c7c 100644
--- a/ddbridge/ddbridge-modulator.c
+++ b/ddbridge/ddbridge-modulator.c
@@ -1848,6 +1848,27 @@ int ddbridge_mod_do_ioctl(struct file *file, unsigned int cmd, void *parg)
 		mod->pcr_correction = cp->pcr_correction;
 		break;
 	}
+	case IOCTL_DDB_MCI_CMD:
+	{
+		struct ddb_mci_msg *msg = 
+			(struct ddb_mci_msg __user *) parg;
+		struct ddb_link *link;
+
+		if (dev->link[0].ids.revision != 1)
+			break;
+
+ 		if (msg->link > 3) {
+			ret = -EFAULT;
+			break;
+		}
+		link = &dev->link[msg->link];
+		if (!link->mci_ok) {
+			ret = -EFAULT;
+			break;
+		}
+		ret = ddb_mci_cmd_link(link, &msg->cmd, &msg->res);
+		break;
+	}
 	default:
 		ret = -EINVAL;
 		break;