From 27a3bbaf4b1e23a3afbae4d9f72b51a36859f74a Mon Sep 17 00:00:00 2001
From: Ralf Baechle <ralf@linux-mips.org>
Date: Wed, 7 Feb 2007 13:48:59 +0000
Subject: [PATCH] [MIPS] VPE: Sprinkle device model code into code to make udev
 happier.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/kernel/mips-mt.c | 19 +++++++++++++++++++
 arch/mips/kernel/vpe.c     | 22 +++++++++++++++++++++-
 include/asm-mips/mips_mt.h |  3 +++
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/arch/mips/kernel/mips-mt.c b/arch/mips/kernel/mips-mt.c
index a32f6797353a..ba01800b6018 100644
--- a/arch/mips/kernel/mips-mt.c
+++ b/arch/mips/kernel/mips-mt.c
@@ -3,9 +3,11 @@
  * Copyright (C) 2005 Mips Technologies, Inc
  */
 
+#include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/cpumask.h>
+#include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/security.h>
 
@@ -453,3 +455,20 @@ void mt_cflush_release(void)
 #endif /* CONFIG_MIPS_MT_SMTC */
 	/* FILL IN VSMP and AP/SP VERSIONS HERE */
 }
+
+struct class *mt_class;
+
+static int __init mt_init(void)
+{
+	struct class *mtc;
+
+	mtc = class_create(THIS_MODULE, "mt");
+	if (IS_ERR(mtc))
+		return PTR_ERR(mtc);
+
+	mt_class = mtc;
+
+	return 0;
+}
+
+subsys_initcall(mt_init);
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 459624969c99..4e832da48c69 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -29,6 +29,7 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/device.h>
 #include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/init.h>
@@ -48,6 +49,7 @@
 #include <asm/cacheflush.h>
 #include <asm/atomic.h>
 #include <asm/cpu.h>
+#include <asm/mips_mt.h>
 #include <asm/processor.h>
 #include <asm/system.h>
 #include <asm/vpe.h>
@@ -64,6 +66,7 @@ typedef void *vpe_handle;
 
 static char module_name[] = "vpe";
 static int major;
+static const int minor = 1;	/* fixed for now  */
 
 #ifdef CONFIG_MIPS_APSP_KSPD
  static struct kspd_notifications kspd_events;
@@ -1365,12 +1368,15 @@ static void kspd_sp_exit( int sp_id)
 }
 #endif
 
+static struct device *vpe_dev;
+
 static int __init vpe_module_init(void)
 {
 	struct vpe *v = NULL;
+	struct device *dev;
 	struct tc *t;
 	unsigned long val;
-	int i;
+	int i, err;
 
 	if (!cpu_has_mipsmt) {
 		printk("VPE loader: not a MIPS MT capable processor\n");
@@ -1383,6 +1389,14 @@ static int __init vpe_module_init(void)
 		return major;
 	}
 
+	dev = device_create(mt_class, NULL, MKDEV(major, minor),
+	                    "tc%d", minor);
+	if (IS_ERR(dev)) {
+		err = PTR_ERR(dev);
+		goto out_chrdev;
+	}
+	vpe_dev = dev;
+
 	dmt();
 	dvpe();
 
@@ -1478,6 +1492,11 @@ static int __init vpe_module_init(void)
 	kspd_events.kspd_sp_exit = kspd_sp_exit;
 #endif
 	return 0;
+
+out_chrdev:
+	unregister_chrdev(major, module_name);
+
+	return err;
 }
 
 static void __exit vpe_module_exit(void)
@@ -1490,6 +1509,7 @@ static void __exit vpe_module_exit(void)
 		}
 	}
 
+	device_destroy(mt_class, MKDEV(major, minor));
 	unregister_chrdev(major, module_name);
 }
 
diff --git a/include/asm-mips/mips_mt.h b/include/asm-mips/mips_mt.h
index c31a312b9783..fdfff0b8ce42 100644
--- a/include/asm-mips/mips_mt.h
+++ b/include/asm-mips/mips_mt.h
@@ -12,4 +12,7 @@ extern unsigned long mt_fpemul_threshold;
 extern void mips_mt_regdump(unsigned long previous_mvpcontrol_value);
 extern void mips_mt_set_cpuoptions(void);
 
+struct class;
+extern struct class *mt_class;
+
 #endif /* __ASM_MIPS_MT_H */