diff options
Diffstat (limited to 'drivers/usb/serial/cyberjack.c')
| -rw-r--r-- | drivers/usb/serial/cyberjack.c | 176 |
1 files changed, 95 insertions, 81 deletions
diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c index c164e2cf2752..b4d72351cb96 100644 --- a/drivers/usb/serial/cyberjack.c +++ b/drivers/usb/serial/cyberjack.c @@ -37,7 +37,7 @@ #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/spinlock.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/serial.h> @@ -57,22 +57,25 @@ static int debug; #define CYBERJACK_PRODUCT_ID 0x0100 /* Function prototypes */ -static int cyberjack_startup (struct usb_serial *serial); -static void cyberjack_shutdown (struct usb_serial *serial); -static int cyberjack_open (struct usb_serial_port *port, struct file *filp); -static void cyberjack_close (struct usb_serial_port *port, struct file *filp); -static int cyberjack_write (struct usb_serial_port *port, const unsigned char *buf, int count); -static int cyberjack_write_room( struct usb_serial_port *port ); -static void cyberjack_read_int_callback (struct urb *urb); -static void cyberjack_read_bulk_callback (struct urb *urb); -static void cyberjack_write_bulk_callback (struct urb *urb); +static int cyberjack_startup(struct usb_serial *serial); +static void cyberjack_shutdown(struct usb_serial *serial); +static int cyberjack_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp); +static void cyberjack_close(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp); +static int cyberjack_write(struct tty_struct *tty, + struct usb_serial_port *port, const unsigned char *buf, int count); +static int cyberjack_write_room(struct tty_struct *tty); +static void cyberjack_read_int_callback(struct urb *urb); +static void cyberjack_read_bulk_callback(struct urb *urb); +static void cyberjack_write_bulk_callback(struct urb *urb); static struct usb_device_id id_table [] = { { USB_DEVICE(CYBERJACK_VENDOR_ID, CYBERJACK_PRODUCT_ID) }, { } /* Terminating entry */ }; -MODULE_DEVICE_TABLE (usb, id_table); +MODULE_DEVICE_TABLE(usb, id_table); static struct usb_driver cyberjack_driver = { .name = "cyberjack", @@ -111,7 +114,7 @@ struct cyberjack_private { }; /* do some startup allocations not currently performed by usb_serial_probe() */ -static int cyberjack_startup (struct usb_serial *serial) +static int cyberjack_startup(struct usb_serial *serial) { struct cyberjack_private *priv; int i; @@ -135,20 +138,20 @@ static int cyberjack_startup (struct usb_serial *serial) for (i = 0; i < serial->num_ports; ++i) { int result; serial->port[i]->interrupt_in_urb->dev = serial->dev; - result = usb_submit_urb(serial->port[i]->interrupt_in_urb, + result = usb_submit_urb(serial->port[i]->interrupt_in_urb, GFP_KERNEL); if (result) err(" usb_submit_urb(read int) failed"); dbg("%s - usb_submit_urb(int urb)", __func__); } - return( 0 ); + return 0; } -static void cyberjack_shutdown (struct usb_serial *serial) +static void cyberjack_shutdown(struct usb_serial *serial) { int i; - + dbg("%s", __func__); for (i = 0; i < serial->num_ports; ++i) { @@ -158,8 +161,9 @@ static void cyberjack_shutdown (struct usb_serial *serial) usb_set_serial_port_data(serial->port[i], NULL); } } - -static int cyberjack_open (struct usb_serial_port *port, struct file *filp) + +static int cyberjack_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) { struct cyberjack_private *priv; unsigned long flags; @@ -167,14 +171,15 @@ static int cyberjack_open (struct usb_serial_port *port, struct file *filp) dbg("%s - port %d", __func__, port->number); - dbg("%s - usb_clear_halt", __func__ ); + dbg("%s - usb_clear_halt", __func__); usb_clear_halt(port->serial->dev, port->write_urb->pipe); /* force low_latency on so that our tty_push actually forces * the data through, otherwise it is scheduled, and with high * data rates (like with OHCI) data can get lost. */ - port->tty->low_latency = 1; + if (tty) + tty->low_latency = 1; priv = usb_get_serial_port_data(port); spin_lock_irqsave(&priv->lock, flags); @@ -186,7 +191,8 @@ static int cyberjack_open (struct usb_serial_port *port, struct file *filp) return result; } -static void cyberjack_close (struct usb_serial_port *port, struct file *filp) +static void cyberjack_close(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) { dbg("%s - port %d", __func__, port->number); @@ -197,7 +203,8 @@ static void cyberjack_close (struct usb_serial_port *port, struct file *filp) } } -static int cyberjack_write (struct usb_serial_port *port, const unsigned char *buf, int count) +static int cyberjack_write(struct tty_struct *tty, + struct usb_serial_port *port, const unsigned char *buf, int count) { struct usb_serial *serial = port->serial; struct cyberjack_private *priv = usb_get_serial_port_data(port); @@ -223,7 +230,7 @@ static int cyberjack_write (struct usb_serial_port *port, const unsigned char *b spin_lock_irqsave(&priv->lock, flags); - if( (count+priv->wrfilled) > sizeof(priv->wrbuf) ) { + if (count+priv->wrfilled > sizeof(priv->wrbuf)) { /* To much data for buffer. Reset buffer. */ priv->wrfilled = 0; port->write_urb_busy = 0; @@ -232,42 +239,43 @@ static int cyberjack_write (struct usb_serial_port *port, const unsigned char *b } /* Copy data */ - memcpy (priv->wrbuf+priv->wrfilled, buf, count); + memcpy(priv->wrbuf + priv->wrfilled, buf, count); usb_serial_debug_data(debug, &port->dev, __func__, count, - priv->wrbuf+priv->wrfilled); + priv->wrbuf + priv->wrfilled); priv->wrfilled += count; - if( priv->wrfilled >= 3 ) { + if (priv->wrfilled >= 3) { wrexpected = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; dbg("%s - expected data: %d", __func__, wrexpected); - } else { + } else wrexpected = sizeof(priv->wrbuf); - } - if( priv->wrfilled >= wrexpected ) { + if (priv->wrfilled >= wrexpected) { /* We have enough data to begin transmission */ int length; dbg("%s - transmitting data (frame 1)", __func__); - length = (wrexpected > port->bulk_out_size) ? port->bulk_out_size : wrexpected; + length = (wrexpected > port->bulk_out_size) ? + port->bulk_out_size : wrexpected; - memcpy (port->write_urb->transfer_buffer, priv->wrbuf, length ); - priv->wrsent=length; + memcpy(port->write_urb->transfer_buffer, priv->wrbuf, length); + priv->wrsent = length; /* set up our urb */ - usb_fill_bulk_urb(port->write_urb, serial->dev, + usb_fill_bulk_urb(port->write_urb, serial->dev, usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress), port->write_urb->transfer_buffer, length, - ((serial->type->write_bulk_callback) ? - serial->type->write_bulk_callback : - cyberjack_write_bulk_callback), + ((serial->type->write_bulk_callback) ? + serial->type->write_bulk_callback : + cyberjack_write_bulk_callback), port); /* send the data out the bulk port */ result = usb_submit_urb(port->write_urb, GFP_ATOMIC); if (result) { - err("%s - failed submitting write urb, error %d", __func__, result); + err("%s - failed submitting write urb, error %d", + __func__, result); /* Throw away data. No better idea what to do with it. */ priv->wrfilled = 0; priv->wrsent = 0; @@ -276,12 +284,12 @@ static int cyberjack_write (struct usb_serial_port *port, const unsigned char *b return 0; } - dbg("%s - priv->wrsent=%d", __func__,priv->wrsent); - dbg("%s - priv->wrfilled=%d", __func__,priv->wrfilled); + dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); + dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); - if( priv->wrsent>=priv->wrfilled ) { + if (priv->wrsent >= priv->wrfilled) { dbg("%s - buffer cleaned", __func__); - memset( priv->wrbuf, 0, sizeof(priv->wrbuf) ); + memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); priv->wrfilled = 0; priv->wrsent = 0; } @@ -289,16 +297,16 @@ static int cyberjack_write (struct usb_serial_port *port, const unsigned char *b spin_unlock_irqrestore(&priv->lock, flags); - return (count); -} + return count; +} -static int cyberjack_write_room( struct usb_serial_port *port ) +static int cyberjack_write_room(struct tty_struct *tty) { /* FIXME: .... */ return CYBERJACK_LOCAL_BUF_SIZE; } -static void cyberjack_read_int_callback( struct urb *urb ) +static void cyberjack_read_int_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct cyberjack_private *priv = usb_get_serial_port_data(port); @@ -312,10 +320,11 @@ static void cyberjack_read_int_callback( struct urb *urb ) if (status) return; - usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); + usb_serial_debug_data(debug, &port->dev, __func__, + urb->actual_length, data); /* React only to interrupts signaling a bulk_in transfer */ - if( (urb->actual_length == 4) && (data[0] == 0x01) ) { + if (urb->actual_length == 4 && data[0] == 0x01) { short old_rdtodo; /* This is a announcement of coming bulk_ins. */ @@ -325,8 +334,8 @@ static void cyberjack_read_int_callback( struct urb *urb ) old_rdtodo = priv->rdtodo; - if( (old_rdtodo+size)<(old_rdtodo) ) { - dbg( "To many bulk_in urbs to do." ); + if (old_rdtodo + size < old_rdtodo) { + dbg("To many bulk_in urbs to do."); spin_unlock(&priv->lock); goto resubmit; } @@ -338,10 +347,10 @@ static void cyberjack_read_int_callback( struct urb *urb ) spin_unlock(&priv->lock); - if( !old_rdtodo ) { + if (!old_rdtodo) { port->read_urb->dev = port->serial->dev; result = usb_submit_urb(port->read_urb, GFP_ATOMIC); - if( result ) + if (result) err("%s - failed resubmitting read urb, error %d", __func__, result); dbg("%s - usb_submit_urb(read urb)", __func__); } @@ -355,7 +364,7 @@ resubmit: dbg("%s - usb_submit_urb(int urb)", __func__); } -static void cyberjack_read_bulk_callback (struct urb *urb) +static void cyberjack_read_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct cyberjack_private *priv = usb_get_serial_port_data(port); @@ -367,14 +376,15 @@ static void cyberjack_read_bulk_callback (struct urb *urb) dbg("%s - port %d", __func__, port->number); - usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); + usb_serial_debug_data(debug, &port->dev, __func__, + urb->actual_length, data); if (status) { dbg("%s - nonzero read bulk status received: %d", __func__, status); return; } - tty = port->tty; + tty = port->port.tty; if (!tty) { dbg("%s - ignoring since device not open\n", __func__); return; @@ -382,15 +392,16 @@ static void cyberjack_read_bulk_callback (struct urb *urb) if (urb->actual_length) { tty_buffer_request_room(tty, urb->actual_length); tty_insert_flip_string(tty, data, urb->actual_length); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(tty); } spin_lock(&priv->lock); /* Reduce urbs to do by one. */ - priv->rdtodo-=urb->actual_length; + priv->rdtodo -= urb->actual_length; /* Just to be sure */ - if ( priv->rdtodo<0 ) priv->rdtodo = 0; + if (priv->rdtodo < 0) + priv->rdtodo = 0; todo = priv->rdtodo; spin_unlock(&priv->lock); @@ -398,16 +409,17 @@ static void cyberjack_read_bulk_callback (struct urb *urb) dbg("%s - rdtodo: %d", __func__, todo); /* Continue to read if we have still urbs to do. */ - if( todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/ ) { + if (todo /* || (urb->actual_length==port->bulk_in_endpointAddress)*/) { port->read_urb->dev = port->serial->dev; result = usb_submit_urb(port->read_urb, GFP_ATOMIC); if (result) - err("%s - failed resubmitting read urb, error %d", __func__, result); + err("%s - failed resubmitting read urb, error %d", + __func__, result); dbg("%s - usb_submit_urb(read urb)", __func__); } } -static void cyberjack_write_bulk_callback (struct urb *urb) +static void cyberjack_write_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct cyberjack_private *priv = usb_get_serial_port_data(port); @@ -425,7 +437,7 @@ static void cyberjack_write_bulk_callback (struct urb *urb) spin_lock(&priv->lock); /* only do something if we have more data to send */ - if( priv->wrfilled ) { + if (priv->wrfilled) { int length, blksize, result; dbg("%s - transmitting data (frame n)", __func__); @@ -433,37 +445,39 @@ static void cyberjack_write_bulk_callback (struct urb *urb) length = ((priv->wrfilled - priv->wrsent) > port->bulk_out_size) ? port->bulk_out_size : (priv->wrfilled - priv->wrsent); - memcpy (port->write_urb->transfer_buffer, priv->wrbuf + priv->wrsent, - length ); - priv->wrsent+=length; + memcpy(port->write_urb->transfer_buffer, + priv->wrbuf + priv->wrsent, length); + priv->wrsent += length; /* set up our urb */ - usb_fill_bulk_urb(port->write_urb, port->serial->dev, + usb_fill_bulk_urb(port->write_urb, port->serial->dev, usb_sndbulkpipe(port->serial->dev, port->bulk_out_endpointAddress), port->write_urb->transfer_buffer, length, - ((port->serial->type->write_bulk_callback) ? - port->serial->type->write_bulk_callback : - cyberjack_write_bulk_callback), + ((port->serial->type->write_bulk_callback) ? + port->serial->type->write_bulk_callback : + cyberjack_write_bulk_callback), port); /* send the data out the bulk port */ result = usb_submit_urb(port->write_urb, GFP_ATOMIC); if (result) { - err("%s - failed submitting write urb, error %d", __func__, result); + err("%s - failed submitting write urb, error %d", + __func__, result); /* Throw away data. No better idea what to do with it. */ priv->wrfilled = 0; priv->wrsent = 0; goto exit; } - dbg("%s - priv->wrsent=%d", __func__,priv->wrsent); - dbg("%s - priv->wrfilled=%d", __func__,priv->wrfilled); + dbg("%s - priv->wrsent=%d", __func__, priv->wrsent); + dbg("%s - priv->wrfilled=%d", __func__, priv->wrfilled); blksize = ((int)priv->wrbuf[2]<<8)+priv->wrbuf[1]+3; - if( (priv->wrsent>=priv->wrfilled) || (priv->wrsent>=blksize) ) { + if (priv->wrsent >= priv->wrfilled || + priv->wrsent >= blksize) { dbg("%s - buffer cleaned", __func__); - memset( priv->wrbuf, 0, sizeof(priv->wrbuf) ); + memset(priv->wrbuf, 0, sizeof(priv->wrbuf)); priv->wrfilled = 0; priv->wrsent = 0; } @@ -474,14 +488,14 @@ exit: usb_serial_port_softint(port); } -static int __init cyberjack_init (void) +static int __init cyberjack_init(void) { int retval; retval = usb_serial_register(&cyberjack_device); if (retval) goto failed_usb_serial_register; retval = usb_register(&cyberjack_driver); - if (retval) + if (retval) goto failed_usb_register; info(DRIVER_VERSION " " DRIVER_AUTHOR); @@ -494,18 +508,18 @@ failed_usb_serial_register: return retval; } -static void __exit cyberjack_exit (void) +static void __exit cyberjack_exit(void) { - usb_deregister (&cyberjack_driver); - usb_serial_deregister (&cyberjack_device); + usb_deregister(&cyberjack_driver); + usb_serial_deregister(&cyberjack_device); } module_init(cyberjack_init); module_exit(cyberjack_exit); -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); -MODULE_VERSION( DRIVER_VERSION ); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); MODULE_LICENSE("GPL"); module_param(debug, bool, S_IRUGO | S_IWUSR); |