openwrt/target/linux/brcm2708/patches-3.18/0111-BCM2708_VCIO-Add-automatic-creation-of-device-node.patch

From 7fa07e9f8c88a5a628b9ca8a843d3490a59fb9cb Mon Sep 17 00:00:00 2001
From: android <trevd1234@gmail.com>
Date: Mon, 25 Aug 2014 13:18:21 +0100
Subject: [PATCH 111/114] BCM2708_VCIO : Add automatic creation of device node

---
 arch/arm/mach-bcm2708/vcio.c | 12 +++++++++++-
 arch/arm/mach-bcm2709/vcio.c | 12 +++++++++++-
 2 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-bcm2708/vcio.c b/arch/arm/mach-bcm2708/vcio.c
index 5e43e85..700bff4 100644
--- a/arch/arm/mach-bcm2708/vcio.c
+++ b/arch/arm/mach-bcm2708/vcio.c
@@ -61,7 +61,7 @@
 #define MBOX_DATA28_LSB(msg)		(((uint32_t)msg) >> 4)
 
 #define MBOX_MAGIC 0xd0d0c0de
-
+static struct class *vcio_class = NULL;
 struct vc_mailbox {
 	struct device *dev;	/* parent device */
 	void __iomem *status;
@@ -421,6 +421,13 @@ static int bcm_vcio_probe(struct platform_device *pdev)
 			       "Failed registering the character device %d\n", ret);
 			return ret;
 		}
+		vcio_class = class_create(THIS_MODULE, BCM_VCIO_DRIVER_NAME);
+		if (IS_ERR(vcio_class)) {
+		    ret = PTR_ERR(vcio_class);
+		   return ret ;
+		}
+		device_create(vcio_class, NULL, MKDEV(MAJOR_NUM, 0), NULL,
+                      "vcio");
 	}
 	return ret;
 }
@@ -462,6 +469,9 @@ static int __init bcm_mbox_init(void)
 
 static void __exit bcm_mbox_exit(void)
 {
+	device_destroy(vcio_class,MKDEV(MAJOR_NUM, 0));
+	class_destroy(vcio_class);
+	unregister_chrdev(MAJOR_NUM, DEVICE_FILE_NAME);
 	platform_driver_unregister(&bcm_mbox_driver);
 }
 
diff --git a/arch/arm/mach-bcm2709/vcio.c b/arch/arm/mach-bcm2709/vcio.c
index 5e43e85..700bff4 100644
--- a/arch/arm/mach-bcm2709/vcio.c
+++ b/arch/arm/mach-bcm2709/vcio.c
@@ -61,7 +61,7 @@
 #define MBOX_DATA28_LSB(msg)		(((uint32_t)msg) >> 4)
 
 #define MBOX_MAGIC 0xd0d0c0de
-
+static struct class *vcio_class = NULL;
 struct vc_mailbox {
 	struct device *dev;	/* parent device */
 	void __iomem *status;
@@ -421,6 +421,13 @@ static int bcm_vcio_probe(struct platform_device *pdev)
 			       "Failed registering the character device %d\n", ret);
 			return ret;
 		}
+		vcio_class = class_create(THIS_MODULE, BCM_VCIO_DRIVER_NAME);
+		if (IS_ERR(vcio_class)) {
+		    ret = PTR_ERR(vcio_class);
+		   return ret ;
+		}
+		device_create(vcio_class, NULL, MKDEV(MAJOR_NUM, 0), NULL,
+                      "vcio");
 	}
 	return ret;
 }
@@ -462,6 +469,9 @@ static int __init bcm_mbox_init(void)
 
 static void __exit bcm_mbox_exit(void)
 {
+	device_destroy(vcio_class,MKDEV(MAJOR_NUM, 0));
+	class_destroy(vcio_class);
+	unregister_chrdev(MAJOR_NUM, DEVICE_FILE_NAME);
 	platform_driver_unregister(&bcm_mbox_driver);
 }
 
-- 
1.8.3.2