USB: added the speedtouch usb driver.

Patch originally from Richard Purdie <rpurdie@rpsys.net> but tweaked by me.

drivers/usb/Makefile

@@ -59,6 +59,7 @@ obj-$(CONFIG_USB_BRLVGER)	+= misc/
 obj-$(CONFIG_USB_EMI26)		+= misc/
 obj-$(CONFIG_USB_LCD)		+= misc/
 obj-$(CONFIG_USB_RIO500)	+= misc/
+obj-$(CONFIG_USB_SPEEDTOUCH)	+= misc/
 obj-$(CONFIG_USB_TIGL)		+= misc/
 obj-$(CONFIG_USB_USS720)	+= misc/
 

drivers/usb/misc/Config.help

@@ -84,3 +84,31 @@ CONFIG_USB_USS720
   inserted in and removed from the running kernel whenever you want).
   The module will be called uss720.o. If you want to compile it as a
   module, say M here and read <file:Documentation/modules.txt>.
+
+CONFIG_USB_SPEEDTCH
+
+  This driver provides support for the Alcatel SpeedTouch ADSL USB 
+  modem.
+
+  The driver requires the ATM interface and ATM SAR so you need to 
+  enable ATM (under Networking options) and the ATM SAR option. You 
+  will also need PPP over ATM (under Network device support).
+
+  This driver is a slightly revised version of Johan Verrept's 1.5 
+  SpeedTouch Driver which has been altered to work on the 2.5 series 
+  kernels.
+
+  To use the device you also need a user-mode daemon that downloads
+  the firmware and (re)initializes the modem. The offical version is 
+  a closed source one from Alcatel that you can get at
+  <http://www.alcateldsl.com/support.htm>.
+
+  A piece of code has recently been sent to linux-usb-devel which 
+  allows the open source user space driver's firmware program 
+  modem_run to be used with this driver instead. You will still 
+  need the Alcatel daemon package to extract the modem firmware from 
+  it (or the windows drivers instead).
+
+  For more information, see Johan Verrept's webpages at
+  <http://linux-usb.sourceforge.net/SpeedTouch/>.
+

drivers/usb/misc/Config.in

@@ -8,3 +8,4 @@ dep_tristate '  USB Auerswald ISDN support (EXPERIMENTAL)' CONFIG_USB_AUERSWALD
 dep_tristate '  USB Diamond Rio500 support (EXPERIMENTAL)' CONFIG_USB_RIO500 $CONFIG_USB $CONFIG_EXPERIMENTAL
 dep_tristate '  Tieman Voyager USB Braille display support (EXPERIMENTAL)' CONFIG_USB_BRLVGER $CONFIG_USB $CONFIG_EXPERIMENTAL
 dep_tristate '  USB LCD driver support' CONFIG_USB_LCD $CONFIG_USB
+dep_tristate '  Alcatel Speedtouch ADSL USB Modem' CONFIG_USB_SPEEDTOUCH $CONFIG_USB    

drivers/usb/misc/Makefile

@@ -3,11 +3,14 @@
 # (the ones that don't fit into any other categories)
 #
 
+export-objs	:= atmsar.o
+
 obj-$(CONFIG_USB_AUERSWALD)	+= auerswald.o
 obj-$(CONFIG_USB_BRLVGER)	+= brlvger.o
 obj-$(CONFIG_USB_EMI26)		+= emi26.o
 obj-$(CONFIG_USB_LCD)		+= usblcd.o
 obj-$(CONFIG_USB_RIO500)	+= rio500.o
+obj-$(CONFIG_USB_SPEEDTOUCH)	+= speedtouch.o atmsar.o
 obj-$(CONFIG_USB_TIGL)		+= tiglusb.o
 obj-$(CONFIG_USB_USS720)	+= uss720.o
 

drivers/usb/misc/atmsar.h

+/*
+ *
+ *  General SAR library for ATM devices.
+ *
+ *  Copyright (c) 2000, Johan Verrept
+ *
+ *  This code falls under the GNU General Public License, see COPYING for details.
+ *
+ */
+
+#ifndef _ATMSAR_H_
+#define _ATMSAR_H_
+
+#include <linux/kernel.h>
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/atmdev.h>
+#include <linux/skbuff.h>
+#include <linux/types.h>
+#include <linux/atm.h>
+
+#define ATMSAR_USE_53BYTE_CELL  0x1L
+#define ATMSAR_SET_PTI          0x2L
+
+
+/* types */
+#define ATMSAR_TYPE_AAL0        ATM_AAL0
+#define ATMSAR_TYPE_AAL1        ATM_AAL1
+#define ATMSAR_TYPE_AAL2        ATM_AAL2
+#define ATMSAR_TYPE_AAL34       ATM_AAL34
+#define ATMSAR_TYPE_AAL5        ATM_AAL5
+
+
+/* default MTU's */
+#define ATMSAR_DEF_MTU_AAL0         48
+#define ATMSAR_DEF_MTU_AAL1         47
+#define ATMSAR_DEF_MTU_AAL2          0	/* not supported */
+#define ATMSAR_DEF_MTU_AAL34         0	/* not supported */
+#define ATMSAR_DEF_MTU_AAL5      65535	/* max mtu ..    */
+
+struct atmsar_vcc_data {
+	struct atmsar_vcc_data *next;
+
+	/* general atmsar flags, per connection */
+	int flags;
+	int type;
+
+	/* connection specific non-atmsar data */
+	struct sk_buff *(*alloc_tx) (struct atm_vcc * vcc, unsigned int size);
+	struct atm_vcc *vcc;
+	struct k_atm_aal_stats *stats;
+	unsigned short mtu;	/* max is actually  65k for AAL5... */
+
+	/* cell data */
+	unsigned int vp;
+	unsigned int vc;
+	unsigned char gfc;
+	unsigned char pti;
+	unsigned int headerFlags;
+	unsigned long atmHeader;
+
+	/* raw cell reassembly */
+	struct sk_buff *reasBuffer;
+};
+
+
+extern struct atmsar_vcc_data *atmsar_open (struct atmsar_vcc_data **list, struct atm_vcc *vcc,
+					    uint type, ushort vpi, ushort vci, unchar pti,
+					    unchar gfc, uint flags);
+extern void atmsar_close (struct atmsar_vcc_data **list, struct atmsar_vcc_data *vcc);
+
+extern struct sk_buff *atmsar_encode_rawcell (struct atmsar_vcc_data *ctx, struct sk_buff *skb);
+extern struct sk_buff *atmsar_encode_aal5 (struct atmsar_vcc_data *ctx, struct sk_buff *skb);
+
+struct sk_buff *atmsar_decode_rawcell (struct atmsar_vcc_data *list, struct sk_buff *skb,
+				       struct atmsar_vcc_data **ctx);
+struct sk_buff *atmsar_decode_aal5 (struct atmsar_vcc_data *ctx, struct sk_buff *skb);
+
+struct sk_buff *atmsar_alloc_tx (struct atmsar_vcc_data *vcc, unsigned int size);
+
+#endif				/* _ATMSAR_H_ */