musb: add the version of the forced hostmode API to proc

This allows userspace to determine at runtime the semantics of the
forced hostmode for the currently running kernel, the version is
presented at /proc/drivers/musb_hdrc.

diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h
index 0581261..00dcc94 100644 (file)
--- a/drivers/usb/musb/musb_core.h
+++ b/drivers/usb/musb/musb_core.h
@@ -63,6 +63,9 @@ struct musb_ep;
 #include "../core/hcd.h"
 #include "musb_host.h"
 
+/* This is the version of forced hostmode userspace<->kernelspace API.
+ * Do not update to the build date, bump only on API changes */
+#define MUSB_VERSION_HOSTMODE  "20101104"
 
 #ifdef CONFIG_USB_MUSB_OTG
 

diff --git a/drivers/usb/musb/musb_procfs.c b/drivers/usb/musb/musb_procfs.c
index 76161d3..8480b56 100644 (file)
--- a/drivers/usb/musb/musb_procfs.c
+++ b/drivers/usb/musb/musb_procfs.c
@@ -479,7 +479,8 @@ static int dump_header_stats(struct musb *musb, char *buffer)
 #elif defined(CONFIG_USB_MUSB_HDRC_HCD)
                        "host"
 #endif
-                       ", debug=%d [eps=%d]\n",
+                       ", debug=%d [eps=%d]"
+                       ", version_hostmode=" MUSB_VERSION_HOSTMODE "\n",
                musb_debug,
                musb->nr_endpoints);
        if (code <= 0)