linux-kernel - [PATCH 001/001] usb: Add support for the mos7820/7840-based B&B USB/RS485 converter to mos7840.c

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Date:	Mon, 25 Feb 2008 17:30:52 -0500
From:	David Ludlow <dave.ludlow@....ws>
To:	linux-usb@...r.kernel.org
CC:	linux-kernel@...r.kernel.org
Subject: [PATCH 001/001] usb: Add support for the mos7820/7840-based B&B USB/RS485
 converter to mos7840.c

From: David Ludlow <dave.ludlow@....ws>

Add support for the mos7820/7840-based B&B USOPTL4_2/USOPTL4_4 USB/RS485 converter to mos7840.c
Signed-off-by: Dave Ludlow <dave.ludlow@....ws>
---
DTR needs to be set/raised to receive and clear/lowered to send, as per the mos7840 datasheet.

--- linux-2.6.25-rc2/drivers/usb/serial/mos7840.c.orig	2008-02-25 15:13:42.000000000 -0500
+++ linux-2.6.25-rc2/drivers/usb/serial/mos7840.c	2008-02-25 15:20:54.000000000 -0500
@@ -110,11 +110,20 @@
 
 /* vendor id and device id defines */
 
+/* The native mos7840/7820 component */
 #define USB_VENDOR_ID_MOSCHIP           0x9710
 #define MOSCHIP_DEVICE_ID_7840          0x7840
 #define MOSCHIP_DEVICE_ID_7820          0x7820
+/* The native component can have its vendor/device id's overridden
+ * in vendor-specific implementations.  Such devices can be handled
+ * by making a change here, in moschip_port_id_table, and in
+ * moschip_id_table_combined
+ */
+#define USB_VENDOR_ID_BANDB             0x0856
+#define BANDB_DEVICE_ID_USOPTL4_4       0xAC44
+#define BANDB_DEVICE_ID_USOPTL4_2       0xAC42
 
-/* Interrupt Rotinue Defines    */
+/* Interrupt Routine Defines    */
 
 #define SERIAL_IIR_RLS      0x06
 #define SERIAL_IIR_MS       0x00
@@ -159,12 +168,16 @@
 static struct usb_device_id moschip_port_id_table[] = {
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)},
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
+	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)},
+	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)},
 	{}			/* terminating entry */
 };
 
 static __devinitdata struct usb_device_id moschip_id_table_combined[] = {
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7840)},
 	{USB_DEVICE(USB_VENDOR_ID_MOSCHIP, MOSCHIP_DEVICE_ID_7820)},
+	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)},
+	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2)},
 	{}			/* terminating entry */
 };



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