diag: Add support for mutiple HSIC instances

On a future target, applications processor will talk to
two MDMs simultaneously. This change will enable multiple
HSIC connections towards this configuration.

Change-Id: If2df9184624e20df13cc76717e593a3b6bb461e5
Signed-off-by: Shalabh Jain <shalabhj@codeaurora.org>
diff --git a/arch/arm/mach-msm/include/mach/diag_bridge.h b/arch/arm/mach-msm/include/mach/diag_bridge.h
index 5647256..d67d664 100644
--- a/arch/arm/mach-msm/include/mach/diag_bridge.h
+++ b/arch/arm/mach-msm/include/mach/diag_bridge.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2011, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2011, 2013, The Linux Foundation. All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 and
@@ -23,32 +23,31 @@
 	void (*resume)(void *ctxt);
 };
 
-#if defined(CONFIG_USB_QCOM_DIAG_BRIDGE) \
-	|| defined(CONFIG_USB_QCOM_DIAG_BRIDGE_MODULE)
+#if IS_ENABLED(CONFIG_USB_QCOM_DIAG_BRIDGE)
 
-extern int diag_bridge_read(char *data, int size);
-extern int diag_bridge_write(char *data, int size);
-extern int diag_bridge_open(struct diag_bridge_ops *ops);
-extern void diag_bridge_close(void);
+extern int diag_bridge_read(int id, char *data, int size);
+extern int diag_bridge_write(int id, char *data, int size);
+extern int diag_bridge_open(int id, struct diag_bridge_ops *ops);
+extern void diag_bridge_close(int id);
 
 #else
 
-static int __maybe_unused diag_bridge_read(char *data, int size)
+static int __maybe_unused diag_bridge_read(int id, char *data, int size)
 {
 	return -ENODEV;
 }
 
-static int __maybe_unused diag_bridge_write(char *data, int size)
+static int __maybe_unused diag_bridge_write(int id, char *data, int size)
 {
 	return -ENODEV;
 }
 
-static int __maybe_unused diag_bridge_open(struct diag_bridge_ops *ops)
+static int __maybe_unused diag_bridge_open(int id, struct diag_bridge_ops *ops)
 {
 	return -ENODEV;
 }
 
-static void __maybe_unused diag_bridge_close(void) { }
+static void __maybe_unused diag_bridge_close(int id) { }
 
 #endif
 
diff --git a/arch/arm/mach-msm/include/mach/usbdiag.h b/arch/arm/mach-msm/include/mach/usbdiag.h
index d9320c3..15f4783 100644
--- a/arch/arm/mach-msm/include/mach/usbdiag.h
+++ b/arch/arm/mach-msm/include/mach/usbdiag.h
@@ -26,6 +26,7 @@
 #define DIAG_LEGACY		"diag"
 #define DIAG_MDM		"diag_mdm"
 #define DIAG_QSC		"diag_qsc"
+#define DIAG_MDM2		"diag_mdm2"
 
 #define USB_DIAG_CONNECT	0
 #define USB_DIAG_DISCONNECT	1