Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 60 insertions, 0 deletions

diff --git a/drivers/usb/serial/ezusb.c b/drivers/usb/serial/ezusb.c
new file mode 100644
index 0000000..1e419c8
--- /dev/null
+++ b/drivers/usb/serial/ezusb.c
@@ -0,0 +1,60 @@
+/*
+ * EZ-USB specific functions used by some of the USB to Serial drivers.
+ *
+ * Copyright (C) 1999 - 2002 Greg Kroah-Hartman (greg@kroah.com)
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License version
+ *	2 as published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include "usb-serial.h"
+
+/* EZ-USB Control and Status Register.  Bit 0 controls 8051 reset */
+#define CPUCS_REG    0x7F92
+
+int ezusb_writememory (struct usb_serial *serial, int address, unsigned char *data, int length, __u8 bRequest)
+{
+	int result;
+	unsigned char *transfer_buffer;
+
+	/* dbg("ezusb_writememory %x, %d", address, length); */
+	if (!serial->dev) {
+		err("%s - no physical device present, failing.", __FUNCTION__);
+		return -ENODEV;
+	}
+
+	transfer_buffer =  kmalloc (length, GFP_KERNEL);
+	if (!transfer_buffer) {
+		dev_err(&serial->dev->dev, "%s - kmalloc(%d) failed.\n", __FUNCTION__, length);
+		return -ENOMEM;
+	}
+	memcpy (transfer_buffer, data, length);
+	result = usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), bRequest, 0x40, address, 0, transfer_buffer, length, 3000);
+	kfree (transfer_buffer);
+	return result;
+}
+
+int ezusb_set_reset (struct usb_serial *serial, unsigned char reset_bit)
+{
+	int response;
+
+	/* dbg("%s - %d", __FUNCTION__, reset_bit); */
+	response = ezusb_writememory (serial, CPUCS_REG, &reset_bit, 1, 0xa0);
+	if (response < 0)
+		dev_err(&serial->dev->dev, "%s- %d failed\n", __FUNCTION__, reset_bit);
+	return response;
+}
+
+
+EXPORT_SYMBOL(ezusb_writememory);
+EXPORT_SYMBOL(ezusb_set_reset);
+