usb: gadget: g_dnl: Drop usb_gadget_controller_number()

The bcdDevice field is defined as
|Device release number in binary-coded decimal
in the USB 2.0 specification. We use this field to distinguish the UDCs
from each other. In theory this could be used on the host side to apply
certain quirks if the "special" UDC in combination with this gadget is
used. This hasn't been done as far as I am aware. In practice it would
be better to fix the UDC driver before shipping since a later release
might not need this quirk anymore.

This patch converts this gadget to use the U-Boot version instead of a
random 2 or 3 plus the UDC number. Linux stopped using this functionality
in 2012, remove it from U-Boot as well.

Matching Linux kernel commit:
ed9cbda63d45 ("usb: gadget: remove usb_gadget_controller_number()")

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Tested-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> # vim3
Link: https://lore.kernel.org/r/20240609213449.194762-1-marek.vasut+renesas@mailbox.org
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>

diff --git a/drivers/usb/gadget/g_dnl.c b/drivers/usb/gadget/g_dnl.c
index b5b5f5d8c1182d0f8f4cb20ecb012345119d23da..631969b3405148ae699c9122530750d52e1ab0e8 100644 (file)
--- a/drivers/usb/gadget/g_dnl.c
+++ b/drivers/usb/gadget/g_dnl.c
@@ -17,10 +17,10 @@
 #include <usb_mass_storage.h>
 #include <dfu.h>
 #include <thor.h>
+#include <version.h>
 
 #include <env_callback.h>
 
-#include "gadget_chips.h"
 #include "composite.c"
 
 /*
@@ -199,18 +199,6 @@ void g_dnl_clear_detach(void)
        g_dnl_detach_request = false;
 }
 
-static int g_dnl_get_bcd_device_number(struct usb_composite_dev *cdev)
-{
-       struct usb_gadget *gadget = cdev->gadget;
-       int gcnum;
-
-       gcnum = usb_gadget_controller_number(gadget);
-       if (gcnum > 0)
-               gcnum += 0x200;
-
-       return g_dnl_get_board_bcd_device_number(gcnum);
-}
-
 /**
  * Update internal serial number variable when the "serial#" env var changes.
  *
@@ -261,7 +249,8 @@ static int g_dnl_bind(struct usb_composite_dev *cdev)
        if (ret)
                goto error;
 
-       gcnum = g_dnl_get_bcd_device_number(cdev);
+       gcnum = g_dnl_get_board_bcd_device_number((U_BOOT_VERSION_NUM << 4) |
+                                                 U_BOOT_VERSION_NUM_PATCH);
        if (gcnum >= 0)
                device_desc.bcdDevice = cpu_to_le16(gcnum);
        else {