Fixed MTP to work with TWRP

drivers/ide/ide-pnp.c

@@ -0,0 +1,112 @@
+/*
+ * This file provides autodetection for ISA PnP IDE interfaces.
+ * It was tested with "ESS ES1868 Plug and Play AudioDrive" IDE interface.
+ *
+ * Copyright (C) 2000 Andrey Panin <pazke@donpac.ru>
+ *
+ * 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, or (at your option)
+ * any later version.
+ *
+ * You should have received a copy of the GNU General Public License
+ * (for example /usr/src/linux/COPYING); if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/init.h>
+#include <linux/pnp.h>
+#include <linux/ide.h>
+#include <linux/module.h>
+
+#define DRV_NAME "ide-pnp"
+
+/* Add your devices here :)) */
+static struct pnp_device_id idepnp_devices[] = {
+	/* Generic ESDI/IDE/ATA compatible hard disk controller */
+	{.id = "PNP0600", .driver_data = 0},
+	{.id = ""}
+};
+
+static const struct ide_port_info ide_pnp_port_info = {
+	.host_flags		= IDE_HFLAG_NO_DMA,
+	.chipset		= ide_generic,
+};
+
+static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
+{
+	struct ide_host *host;
+	unsigned long base, ctl;
+	int rc;
+	struct ide_hw hw, *hws[] = { &hw };
+
+	printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
+
+	if (!(pnp_port_valid(dev, 0) && pnp_port_valid(dev, 1) && pnp_irq_valid(dev, 0)))
+		return -1;
+
+	base = pnp_port_start(dev, 0);
+	ctl = pnp_port_start(dev, 1);
+
+	if (!request_region(base, 8, DRV_NAME)) {
+		printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
+				DRV_NAME, base, base + 7);
+		return -EBUSY;
+	}
+
+	if (!request_region(ctl, 1, DRV_NAME)) {
+		printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
+				DRV_NAME, ctl);
+		release_region(base, 8);
+		return -EBUSY;
+	}
+
+	memset(&hw, 0, sizeof(hw));
+	ide_std_init_ports(&hw, base, ctl);
+	hw.irq = pnp_irq(dev, 0);
+
+	rc = ide_host_add(&ide_pnp_port_info, hws, 1, &host);
+	if (rc)
+		goto out;
+
+	pnp_set_drvdata(dev, host);
+
+	return 0;
+out:
+	release_region(ctl, 1);
+	release_region(base, 8);
+
+	return rc;
+}
+
+static void idepnp_remove(struct pnp_dev *dev)
+{
+	struct ide_host *host = pnp_get_drvdata(dev);
+
+	ide_host_remove(host);
+
+	release_region(pnp_port_start(dev, 1), 1);
+	release_region(pnp_port_start(dev, 0), 8);
+}
+
+static struct pnp_driver idepnp_driver = {
+	.name		= "ide",
+	.id_table	= idepnp_devices,
+	.probe		= idepnp_probe,
+	.remove		= idepnp_remove,
+};
+
+static int __init pnpide_init(void)
+{
+	return pnp_register_driver(&idepnp_driver);
+}
+
+static void __exit pnpide_exit(void)
+{
+	pnp_unregister_driver(&idepnp_driver);
+}
+
+module_init(pnpide_init);
+module_exit(pnpide_exit);
+
+MODULE_LICENSE("GPL");