forked from Minki/linux
Revert "USB: sam-ba: add driver for Atmel SAM Boot Assistant (SAM-BA)"
This reverts commit90593899de. SAM-BA devices identify themselves CDC-ACM devices and should be using the cdc-acm driver. Since commit5b239f0aeb(USB: cdc-acm: Add pseudo modem without AT command capabilities) cdc-acm also binds to them. Note that the Atmel SAM-BA tools expect to use a USB-serial driver and thus require a symlink from /dev/ttyACMn to some /dev/ttyUSBm (with m < 30) to be able to select the device. This is simply a UI-issue that should be fixed by Atmel. Tested with the SAM-BA 2.10 tools and an Atmel at91sam9260-ek. Signed-off-by: Johan Hovold <jhovold@gmail.com> Cc: Sven Köhler <sven.koehler@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Johan Hovold
Greg Kroah-Hartman
parent
a87103a6d4
commit
b750106baf
@ -527,15 +527,6 @@ config USB_SERIAL_SAFE_PADDED
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bool "USB Secure Encapsulated Driver - Padded"
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depends on USB_SERIAL_SAFE
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config USB_SERIAL_SAMBA
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tristate "USB Atmel SAM Boot Assistant (SAM-BA) driver"
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help
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Say Y here if you want to access the SAM-BA boot application of an
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Atmel AT91SAM device.
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To compile this driver as a module, choose M here: the
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module will be called sam-ba.
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config USB_SERIAL_SIEMENS_MPI
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tristate "USB Siemens MPI driver"
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help
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@ -48,7 +48,6 @@ obj-$(CONFIG_USB_SERIAL_PL2303) += pl2303.o
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obj-$(CONFIG_USB_SERIAL_QCAUX) += qcaux.o
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obj-$(CONFIG_USB_SERIAL_QUALCOMM) += qcserial.o
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obj-$(CONFIG_USB_SERIAL_SAFE) += safe_serial.o
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obj-$(CONFIG_USB_SERIAL_SAMBA) += sam-ba.o
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obj-$(CONFIG_USB_SERIAL_SIEMENS_MPI) += siemens_mpi.o
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obj-$(CONFIG_USB_SERIAL_SIERRAWIRELESS) += sierra.o
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obj-$(CONFIG_USB_SERIAL_SPCP8X5) += spcp8x5.o
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@ -1,206 +0,0 @@
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/*
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* Atmel SAM Boot Assistant (SAM-BA) driver
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*
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* Copyright (C) 2010 Johan Hovold <jhovold@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/tty.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/usb.h>
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#include <linux/usb/serial.h>
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#define DRIVER_VERSION "v1.0"
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#define DRIVER_AUTHOR "Johan Hovold <jhovold@gmail.com>"
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#define DRIVER_DESC "Atmel SAM Boot Assistant (SAM-BA) driver"
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#define SAMBA_VENDOR_ID 0x3eb
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#define SAMBA_PRODUCT_ID 0x6124
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static int debug;
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static const struct usb_device_id id_table[] = {
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/*
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* NOTE: Only match the CDC Data interface.
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*/
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{ USB_DEVICE_AND_INTERFACE_INFO(SAMBA_VENDOR_ID, SAMBA_PRODUCT_ID,
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USB_CLASS_CDC_DATA, 0, 0) },
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{ }
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};
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MODULE_DEVICE_TABLE(usb, id_table);
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static struct usb_driver samba_driver = {
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.name = "sam-ba",
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.probe = usb_serial_probe,
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.disconnect = usb_serial_disconnect,
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.id_table = id_table,
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.no_dynamic_id = 1,
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};
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/*
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* NOTE: The SAM-BA firmware cannot handle merged write requests so we cannot
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* use the generic write implementation (which uses the port write fifo).
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*/
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static int samba_write(struct tty_struct *tty, struct usb_serial_port *port,
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const unsigned char *buf, int count)
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{
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struct urb *urb;
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unsigned long flags;
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int result;
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int i;
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if (!count)
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return 0;
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count = min_t(int, count, port->bulk_out_size);
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spin_lock_irqsave(&port->lock, flags);
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if (!port->write_urbs_free) {
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spin_unlock_irqrestore(&port->lock, flags);
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return 0;
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}
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i = find_first_bit(&port->write_urbs_free,
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ARRAY_SIZE(port->write_urbs));
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__clear_bit(i, &port->write_urbs_free);
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port->tx_bytes += count;
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spin_unlock_irqrestore(&port->lock, flags);
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urb = port->write_urbs[i];
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memcpy(urb->transfer_buffer, buf, count);
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urb->transfer_buffer_length = count;
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usb_serial_debug_data(debug, &port->dev, __func__, count,
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urb->transfer_buffer);
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result = usb_submit_urb(urb, GFP_ATOMIC);
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if (result) {
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dev_err(&port->dev, "%s - error submitting urb: %d\n",
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__func__, result);
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spin_lock_irqsave(&port->lock, flags);
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__set_bit(i, &port->write_urbs_free);
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port->tx_bytes -= count;
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spin_unlock_irqrestore(&port->lock, flags);
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return result;
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}
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return count;
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}
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static int samba_write_room(struct tty_struct *tty)
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{
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struct usb_serial_port *port = tty->driver_data;
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unsigned long flags;
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unsigned long free;
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int count;
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int room;
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spin_lock_irqsave(&port->lock, flags);
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free = port->write_urbs_free;
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spin_unlock_irqrestore(&port->lock, flags);
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count = hweight_long(free);
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room = count * port->bulk_out_size;
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dbg("%s - returns %d", __func__, room);
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return room;
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}
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static int samba_chars_in_buffer(struct tty_struct *tty)
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{
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struct usb_serial_port *port = tty->driver_data;
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unsigned long flags;
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int chars;
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spin_lock_irqsave(&port->lock, flags);
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chars = port->tx_bytes;
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spin_unlock_irqrestore(&port->lock, flags);
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dbg("%s - returns %d", __func__, chars);
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return chars;
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}
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static void samba_write_bulk_callback(struct urb *urb)
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{
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struct usb_serial_port *port = urb->context;
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unsigned long flags;
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int i;
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dbg("%s - port %d", __func__, port->number);
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for (i = 0; i < ARRAY_SIZE(port->write_urbs); ++i) {
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if (port->write_urbs[i] == urb)
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break;
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}
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spin_lock_irqsave(&port->lock, flags);
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__set_bit(i, &port->write_urbs_free);
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port->tx_bytes -= urb->transfer_buffer_length;
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spin_unlock_irqrestore(&port->lock, flags);
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if (urb->status)
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dbg("%s - non-zero urb status: %d", __func__, urb->status);
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usb_serial_port_softint(port);
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}
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static struct usb_serial_driver samba_device = {
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.driver = {
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.owner = THIS_MODULE,
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.name = "sam-ba",
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},
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.usb_driver = &samba_driver,
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.id_table = id_table,
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.num_ports = 1,
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.bulk_in_size = 512,
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.bulk_out_size = 2048,
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.write = samba_write,
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.write_room = samba_write_room,
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.chars_in_buffer = samba_chars_in_buffer,
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.write_bulk_callback = samba_write_bulk_callback,
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.throttle = usb_serial_generic_throttle,
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.unthrottle = usb_serial_generic_unthrottle,
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};
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static int __init samba_init(void)
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{
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int retval;
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retval = usb_serial_register(&samba_device);
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if (retval)
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return retval;
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retval = usb_register(&samba_driver);
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if (retval) {
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usb_serial_deregister(&samba_device);
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return retval;
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}
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printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ": "
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DRIVER_DESC "\n");
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return 0;
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}
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static void __exit samba_exit(void)
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{
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usb_deregister(&samba_driver);
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usb_serial_deregister(&samba_device);
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}
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module_init(samba_init);
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module_exit(samba_exit);
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_VERSION(DRIVER_VERSION);
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MODULE_LICENSE("GPL");
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module_param(debug, bool, S_IRUGO | S_IWUSR);
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MODULE_PARM_DESC(debug, "Enable verbose debugging messages");
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