From aabc8aca47e60cf745a34af28c50679fcb967910 Mon Sep 17 00:00:00 2001
From: Solomon Peachy <pizza@shaftnet.org>
Date: Sat, 3 Oct 2020 18:17:11 -0400
Subject: New port:  FiiO M3K

Most credit goes to:  Roman Skylarov
Additional integration and refactoring by myself.

 *** COMPLETELY UNTESTED ***

Change-Id: Ia64c36d92e0214c6b15f7a868df286f8113ea27b
---
 firmware/target/hosted/fiio/usb-fiio.c | 81 ++++++++++++++++++++++++++++++++++
 1 file changed, 81 insertions(+)
 create mode 100644 firmware/target/hosted/fiio/usb-fiio.c

(limited to 'firmware/target/hosted/fiio/usb-fiio.c')

diff --git a/firmware/target/hosted/fiio/usb-fiio.c b/firmware/target/hosted/fiio/usb-fiio.c
new file mode 100644
index 0000000000..76a0ec5a2b
--- /dev/null
+++ b/firmware/target/hosted/fiio/usb-fiio.c
@@ -0,0 +1,81 @@
+/***************************************************************************
+ *             __________               __   ___
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2018 by Marcin Bukat
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdlib.h>
+#include <sys/mount.h>
+#include <string.h>
+#include "config.h"
+#include "disk.h"
+#include "usb.h"
+#include "sysfs.h"
+#include "power.h"
+#include "power-fiio.h"
+
+const char * const sysfs_usb_online =
+    "/sys/class/power_supply/usb/online";
+
+int usb_detect(void)
+{
+    int present = 0;
+    sysfs_get_int(sysfs_usb_online, &present);
+
+    return present ? USB_INSERTED : USB_EXTRACTED;
+}
+
+void usb_enable(bool on)
+{
+    if (on)
+    {
+	system ("insmod /lib/modules/3.10.14/kernel/driver/usb/gadget/libcomposite.ko");
+	system ("insmod /lib/modules/3.10.14/kernel/driver/usb/gadget/usb_f_mass_storage.ko");
+	system ("insmod /lib/modules/3.10.14/kernel/driver/usb/gadget/g_mass_storage.ko file=/dev/mmcblk0 removable=1");
+    }
+    else
+    {
+	system ("rmmod g_mass_storage");
+	system ("rmmod usb_f_mass_storage");
+	system ("rmmod libcomposite");
+    }
+}
+
+/* This is called by usb thread after usb extract in order to return
+ * regular FS access
+ *
+ * returns the # of successful mounts
+*/
+int disk_mount_all(void)
+{
+    return 1;
+}
+
+/* This is called by usb thread after all threads ACKs usb inserted message
+ *
+ * returns the # of successful unmounts
+ */
+int disk_unmount_all(void)
+{
+    return 1;
+}
+
+void usb_init_device(void)
+{
+    system ("insmod /lib/modules/3.10.14/kernel/driver/staging/dwc2/dwc2.ko");
+    usb_enable(true);
+}
-- 
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