usb: gadget: storage_common: add methods to show/store 'cdrom' and 'removable'

This will be required by configfs integration.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

2 files changed, 47 insertions, 0 deletions

diff --git a/drivers/usb/gadget/storage_common.c b/drivers/usb/gadget/storage_common.c
index 969948d..c7b78a1 100644
--- a/drivers/usb/gadget/storage_common.c
+++ b/drivers/usb/gadget/storage_common.c
@@ -359,6 +359,17 @@ ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
 }
 EXPORT_SYMBOL(fsg_show_file);
 
+ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf)
+{
+	return sprintf(buf, "%u\n", curlun->cdrom);
+}
+EXPORT_SYMBOL(fsg_show_cdrom);
+
+ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf)
+{
+	return sprintf(buf, "%u\n", curlun->removable);
+}
+EXPORT_SYMBOL(fsg_show_removable);
 
 ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem,
 		     const char *buf, size_t count)
@@ -439,4 +450,35 @@ ssize_t fsg_store_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
 }
 EXPORT_SYMBOL(fsg_store_file);
 
+ssize_t fsg_store_cdrom(struct fsg_lun *curlun, const char *buf, size_t count)
+{
+	unsigned	cdrom;
+	int		ret;
+
+	ret = kstrtouint(buf, 2, &cdrom);
+	if (ret)
+		return ret;
+
+	curlun->cdrom = cdrom;
+
+	return count;
+}
+EXPORT_SYMBOL(fsg_store_cdrom);
+
+ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf,
+			    size_t count)
+{
+	unsigned	removable;
+	int		ret;
+
+	ret = kstrtouint(buf, 2, &removable);
+	if (ret)
+		return ret;
+
+	curlun->removable = removable;
+
+	return count;
+}
+EXPORT_SYMBOL(fsg_store_removable);
+
 MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/storage_common.h b/drivers/usb/gadget/storage_common.h
index 16cf07b..e0f7aa6 100644
--- a/drivers/usb/gadget/storage_common.h
+++ b/drivers/usb/gadget/storage_common.h
@@ -214,10 +214,15 @@ ssize_t fsg_show_ro(struct fsg_lun *curlun, char *buf);
 ssize_t fsg_show_nofua(struct fsg_lun *curlun, char *buf);
 ssize_t fsg_show_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
 		      char *buf);
+ssize_t fsg_show_cdrom(struct fsg_lun *curlun, char *buf);
+ssize_t fsg_show_removable(struct fsg_lun *curlun, char *buf);
 ssize_t fsg_store_ro(struct fsg_lun *curlun, struct rw_semaphore *filesem,
 		     const char *buf, size_t count);
 ssize_t fsg_store_nofua(struct fsg_lun *curlun, const char *buf, size_t count);
 ssize_t fsg_store_file(struct fsg_lun *curlun, struct rw_semaphore *filesem,
 		       const char *buf, size_t count);
+ssize_t fsg_store_cdrom(struct fsg_lun *curlun, const char *buf, size_t count);
+ssize_t fsg_store_removable(struct fsg_lun *curlun, const char *buf,
+			    size_t count);
 
 #endif /* USB_STORAGE_COMMON_H */