diff --git a/porting/lv_port_fs_template.c b/porting/lv_port_fs_template.c
index 31edfcfb2f..dab94608a8 100644
--- a/porting/lv_port_fs_template.c
+++ b/porting/lv_port_fs_template.c
@@ -42,20 +42,20 @@ typedef struct {
  **********************/
 static void fs_init(void);
 
-static lv_fs_res_t fs_open (void * file_p, const char * path, lv_fs_mode_t mode);
-static lv_fs_res_t fs_close (void * file_p);
-static lv_fs_res_t fs_read (void * file_p, void * buf, uint32_t btr, uint32_t * br);
-static lv_fs_res_t fs_write(void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
-static lv_fs_res_t fs_seek (void * file_p, uint32_t pos);
-static lv_fs_res_t fs_size (void * file_p, uint32_t * size_p);
-static lv_fs_res_t fs_tell (void * file_p, uint32_t * pos_p);
-static lv_fs_res_t fs_remove (const char *path);
-static lv_fs_res_t fs_trunc (void * file_p);
-static lv_fs_res_t fs_rename (const char * oldname, const char * newname);
-static lv_fs_res_t fs_free (uint32_t * total_p, uint32_t * free_p);
-static lv_fs_res_t fs_dir_open (void * rddir_p, const char *path);
-static lv_fs_res_t fs_dir_read (void * rddir_p, char *fn);
-static lv_fs_res_t fs_dir_close (void * rddir_p);
+static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode);
+static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p);
+static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br);
+static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw);
+static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos);
+static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p);
+static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p);
+static lv_fs_res_t fs_remove (lv_fs_drv_t * drv, const char *path);
+static lv_fs_res_t fs_trunc (lv_fs_drv_t * drv, void * file_p);
+static lv_fs_res_t fs_rename (lv_fs_drv_t * drv, const char * oldname, const char * newname);
+static lv_fs_res_t fs_free (lv_fs_drv_t * drv, uint32_t * total_p, uint32_t * free_p);
+static lv_fs_res_t fs_dir_open (lv_fs_drv_t * drv, void * rddir_p, const char *path);
+static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * rddir_p, char *fn);
+static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * rddir_p);
 
 /**********************
  *  STATIC VARIABLES
@@ -125,12 +125,13 @@ static void fs_init(void)
 
 /**
  * Open a file
+ * @param drv pointer to a driver where this function belongs
  * @param file_p pointer to a file_t variable
  * @param path path to the file beginning with the driver letter (e.g. S:/folder/file.txt)
  * @param mode read: FS_MODE_RD, write: FS_MODE_WR, both: FS_MODE_RD | FS_MODE_WR
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_open (void * file_p, const char * path, lv_fs_mode_t mode)
+static lv_fs_res_t fs_open (lv_fs_drv_t * drv, void * file_p, const char * path, lv_fs_mode_t mode)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -159,11 +160,12 @@ static lv_fs_res_t fs_open (void * file_p, const char * path, lv_fs_mode_t mode)
 
 /**
  * Close an opened file
+ * @param drv pointer to a driver where this function belongs
  * @param file_p pointer to a file_t variable. (opened with lv_ufs_open)
  * @return LV_FS_RES_OK: no error, the file is read
  *         any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_close (void * file_p)
+static lv_fs_res_t fs_close (lv_fs_drv_t * drv, void * file_p)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -174,6 +176,7 @@ static lv_fs_res_t fs_close (void * file_p)
 
 /**
  * Read data from an opened file
+ * @param drv pointer to a driver where this function belongs
  * @param file_p pointer to a file_t variable.
  * @param buf pointer to a memory block where to store the read data
  * @param btr number of Bytes To Read
@@ -181,7 +184,7 @@ static lv_fs_res_t fs_close (void * file_p)
  * @return LV_FS_RES_OK: no error, the file is read
  *         any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_read (void * file_p, void * buf, uint32_t btr, uint32_t * br)
+static lv_fs_res_t fs_read (lv_fs_drv_t * drv, void * file_p, void * buf, uint32_t btr, uint32_t * br)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -192,13 +195,14 @@ static lv_fs_res_t fs_read (void * file_p, void * buf, uint32_t btr, uint32_t *
 
 /**
  * Write into a file
+ * @param drv pointer to a driver where this function belongs
  * @param file_p pointer to a file_t variable
  * @param buf pointer to a buffer with the bytes to write
  * @param btr Bytes To Write
  * @param br the number of real written bytes (Bytes Written). NULL if unused.
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_write(void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
+static lv_fs_res_t fs_write(lv_fs_drv_t * drv, void * file_p, const void * buf, uint32_t btw, uint32_t * bw)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -209,12 +213,13 @@ static lv_fs_res_t fs_write(void * file_p, const void * buf, uint32_t btw, uint3
 
 /**
  * Set the read write pointer. Also expand the file size if necessary.
+ * @param drv pointer to a driver where this function belongs
  * @param file_p pointer to a file_t variable. (opened with lv_ufs_open )
  * @param pos the new position of read write pointer
  * @return LV_FS_RES_OK: no error, the file is read
  *         any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_seek (void * file_p, uint32_t pos)
+static lv_fs_res_t fs_seek (lv_fs_drv_t * drv, void * file_p, uint32_t pos)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -225,11 +230,12 @@ static lv_fs_res_t fs_seek (void * file_p, uint32_t pos)
 
 /**
  * Give the size of a file bytes
+ * @param drv pointer to a driver where this function belongs
  * @param file_p pointer to a file_t variable
  * @param size pointer to a variable to store the size
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_size (void * file_p, uint32_t * size_p)
+static lv_fs_res_t fs_size (lv_fs_drv_t * drv, void * file_p, uint32_t * size_p)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -239,12 +245,13 @@ static lv_fs_res_t fs_size (void * file_p, uint32_t * size_p)
 }
 /**
  * Give the position of the read write pointer
+ * @param drv pointer to a driver where this function belongs
  * @param file_p pointer to a file_t variable.
  * @param pos_p pointer to to store the result
  * @return LV_FS_RES_OK: no error, the file is read
  *         any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_tell (void * file_p, uint32_t * pos_p)
+static lv_fs_res_t fs_tell (lv_fs_drv_t * drv, void * file_p, uint32_t * pos_p)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -255,10 +262,11 @@ static lv_fs_res_t fs_tell (void * file_p, uint32_t * pos_p)
 
 /**
  * Delete a file
+ * @param drv pointer to a driver where this function belongs
  * @param path path of the file to delete
  * @return  LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_remove (const char *path)
+static lv_fs_res_t fs_remove (lv_fs_drv_t * drv, const char *path)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -269,11 +277,12 @@ static lv_fs_res_t fs_remove (const char *path)
 
 /**
  * Truncate the file size to the current position of the read write pointer
+ * @param drv pointer to a driver where this function belongs
  * @param file_p pointer to an 'ufs_file_t' variable. (opened with lv_fs_open )
  * @return LV_FS_RES_OK: no error, the file is read
  *         any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_trunc (void * file_p)
+static lv_fs_res_t fs_trunc (lv_fs_drv_t * drv, void * file_p)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -284,11 +293,12 @@ static lv_fs_res_t fs_trunc (void * file_p)
 
 /**
  * Rename a file
+ * @param drv pointer to a driver where this function belongs
  * @param oldname path to the file
  * @param newname path with the new name
  * @return LV_FS_RES_OK or any error from 'fs_res_t'
  */
-static lv_fs_res_t fs_rename (const char * oldname, const char * newname)
+static lv_fs_res_t fs_rename (lv_fs_drv_t * drv, const char * oldname, const char * newname)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -299,6 +309,7 @@ static lv_fs_res_t fs_rename (const char * oldname, const char * newname)
 
 /**
  * Get the free and total size of a driver in kB
+ * @param drv pointer to a driver where this function belongs
  * @param letter the driver letter
  * @param total_p pointer to store the total size [kB]
  * @param free_p pointer to store the free size [kB]
@@ -315,11 +326,12 @@ static lv_fs_res_t fs_free (uint32_t * total_p, uint32_t * free_p)
 
 /**
  * Initialize a 'fs_read_dir_t' variable for directory reading
+ * @param drv pointer to a driver where this function belongs
  * @param rddir_p pointer to a 'fs_read_dir_t' variable
  * @param path path to a directory
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_dir_open (void * rddir_p, const char *path)
+static lv_fs_res_t fs_dir_open (lv_fs_drv_t * drv, void * rddir_p, const char *path)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -331,11 +343,12 @@ static lv_fs_res_t fs_dir_open (void * rddir_p, const char *path)
 /**
  * Read the next filename form a directory.
  * The name of the directories will begin with '/'
+ * @param drv pointer to a driver where this function belongs
  * @param rddir_p pointer to an initialized 'fs_read_dir_t' variable
  * @param fn pointer to a buffer to store the filename
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_dir_read (void * rddir_p, char *fn)
+static lv_fs_res_t fs_dir_read (lv_fs_drv_t * drv, void * rddir_p, char *fn)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;
 
@@ -346,10 +359,11 @@ static lv_fs_res_t fs_dir_read (void * rddir_p, char *fn)
 
 /**
  * Close the directory reading
+ * @param drv pointer to a driver where this function belongs
  * @param rddir_p pointer to an initialized 'fs_read_dir_t' variable
  * @return LV_FS_RES_OK or any error from lv_fs_res_t enum
  */
-static lv_fs_res_t fs_dir_close (void * rddir_p)
+static lv_fs_res_t fs_dir_close (lv_fs_drv_t * drv, void * rddir_p)
 {
     lv_fs_res_t res = LV_FS_RES_NOT_IMP;