X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fusb%2Fserial%2Fempeg.c;h=a6ab5b58d9ca5c6456a9a56eb7606e4fb18c4b0e;hb=1481b9109fe771ec8b035d7760f42e36d2bed5d4;hp=a5c8e1e17ea5ff42c0280b7e0b444e42694ac390;hpb=a60387ba3114fe087349df23fa82e5ad9d5b6ff2;p=pandora-kernel.git diff --git a/drivers/usb/serial/empeg.c b/drivers/usb/serial/empeg.c index a5c8e1e17ea5..a6ab5b58d9ca 100644 --- a/drivers/usb/serial/empeg.c +++ b/drivers/usb/serial/empeg.c @@ -11,36 +11,39 @@ * it under the terms of the GNU General Public License, as published by * the Free Software Foundation, version 2. * - * See Documentation/usb/usb-serial.txt for more information on using this driver - * + * See Documentation/usb/usb-serial.txt for more information on using this + * driver + * * (07/16/2001) gb - * remove unused code in empeg_close() (thanks to Oliver Neukum for pointing this - * out) and rewrote empeg_set_termios(). - * + * remove unused code in empeg_close() (thanks to Oliver Neukum for + * pointing this out) and rewrote empeg_set_termios(). + * * (05/30/2001) gkh - * switched from using spinlock to a semaphore, which fixes lots of problems. + * switched from using spinlock to a semaphore, which fixes lots of + * problems. * * (04/08/2001) gb * Identify version on module load. - * + * * (01/22/2001) gb - * Added write_room() and chars_in_buffer() support. - * + * Added write_room() and chars_in_buffer() support. + * * (12/21/2000) gb * Moved termio stuff inside the port->active check. * Moved MOD_DEC_USE_COUNT to end of empeg_close(). - * + * * (12/03/2000) gb - * Added port->tty->ldisc.set_termios(port->tty, NULL) to empeg_open() - * This notifies the tty driver that the termios have changed. - * + * Added port->port.tty->ldisc.set_termios(port->port.tty, NULL) to + * empeg_open(). This notifies the tty driver that the termios have + * changed. + * * (11/13/2000) gb - * Moved tty->low_latency = 1 from empeg_read_bulk_callback() to empeg_open() - * (It only needs to be set once - Doh!) - * + * Moved tty->low_latency = 1 from empeg_read_bulk_callback() to + * empeg_open() (It only needs to be set once - Doh!) + * * (11/11/2000) gb * Updated to work with id_table structure. - * + * * (11/04/2000) gb * Forked this from visor.c, and hacked it up to work with an * Empeg ltd. empeg-car player. Constructive criticism welcomed. @@ -48,7 +51,7 @@ * use of his code, and for his guidance, advice and patience. :) * A 'Thank You' is in order for John Ripley of Empeg ltd for his * advice, and patience too. - * + * */ #include @@ -60,7 +63,7 @@ #include #include #include -#include +#include #include #include @@ -77,31 +80,30 @@ static int debug; #define EMPEG_PRODUCT_ID 0x0001 /* function prototypes for an empeg-car player */ -static int empeg_open (struct usb_serial_port *port, struct file *filp); -static void empeg_close (struct usb_serial_port *port, struct file *filp); -static int empeg_write (struct usb_serial_port *port, - const unsigned char *buf, - int count); -static int empeg_write_room (struct usb_serial_port *port); -static int empeg_chars_in_buffer (struct usb_serial_port *port); -static void empeg_throttle (struct usb_serial_port *port); -static void empeg_unthrottle (struct usb_serial_port *port); -static int empeg_startup (struct usb_serial *serial); -static void empeg_shutdown (struct usb_serial *serial); -static int empeg_ioctl (struct usb_serial_port *port, - struct file * file, - unsigned int cmd, - unsigned long arg); -static void empeg_set_termios (struct usb_serial_port *port, struct ktermios *old_termios); -static void empeg_write_bulk_callback (struct urb *urb); -static void empeg_read_bulk_callback (struct urb *urb); +static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, + struct file *filp); +static void empeg_close(struct tty_struct *tty, struct usb_serial_port *port, + struct file *filp); +static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *buf, + int count); +static int empeg_write_room(struct tty_struct *tty); +static int empeg_chars_in_buffer(struct tty_struct *tty); +static void empeg_throttle(struct tty_struct *tty); +static void empeg_unthrottle(struct tty_struct *tty); +static int empeg_startup(struct usb_serial *serial); +static void empeg_shutdown(struct usb_serial *serial); +static void empeg_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios); +static void empeg_write_bulk_callback(struct urb *urb); +static void empeg_read_bulk_callback(struct urb *urb); static struct usb_device_id id_table [] = { { USB_DEVICE(EMPEG_VENDOR_ID, EMPEG_PRODUCT_ID) }, { } /* Terminating entry */ }; -MODULE_DEVICE_TABLE (usb, id_table); +MODULE_DEVICE_TABLE(usb, id_table); static struct usb_driver empeg_driver = { .name = "empeg", @@ -118,9 +120,6 @@ static struct usb_serial_driver empeg_device = { }, .id_table = id_table, .usb_driver = &empeg_driver, - .num_interrupt_in = 0, - .num_bulk_in = 1, - .num_bulk_out = 1, .num_ports = 1, .open = empeg_open, .close = empeg_close, @@ -128,7 +127,6 @@ static struct usb_serial_driver empeg_device = { .unthrottle = empeg_unthrottle, .attach = empeg_startup, .shutdown = empeg_shutdown, - .ioctl = empeg_ioctl, .set_termios = empeg_set_termios, .write = empeg_write, .write_room = empeg_write_room, @@ -148,15 +146,16 @@ static int bytes_out; /****************************************************************************** * Empeg specific driver functions ******************************************************************************/ -static int empeg_open (struct usb_serial_port *port, struct file *filp) +static int empeg_open(struct tty_struct *tty, struct usb_serial_port *port, + struct file *filp) { struct usb_serial *serial = port->serial; int result = 0; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); /* Force default termio settings */ - empeg_set_termios (port, NULL) ; + empeg_set_termios(tty, port, NULL) ; bytes_in = 0; bytes_out = 0; @@ -164,7 +163,7 @@ static int empeg_open (struct usb_serial_port *port, struct file *filp) /* Start reading from the device */ usb_fill_bulk_urb( port->read_urb, - serial->dev, + serial->dev, usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, @@ -175,15 +174,18 @@ static int empeg_open (struct usb_serial_port *port, struct file *filp) result = usb_submit_urb(port->read_urb, GFP_KERNEL); if (result) - dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result); + dev_err(&port->dev, + "%s - failed submitting read urb, error %d\n", + __func__, result); return result; } -static void empeg_close (struct usb_serial_port *port, struct file * filp) +static void empeg_close(struct tty_struct *tty, struct usb_serial_port *port, + struct file *filp) { - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); /* shutdown our bulk read */ usb_kill_urb(port->read_urb); @@ -192,7 +194,8 @@ static void empeg_close (struct usb_serial_port *port, struct file * filp) } -static int empeg_write (struct usb_serial_port *port, const unsigned char *buf, int count) +static int empeg_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *buf, int count) { struct usb_serial *serial = port->serial; struct urb *urb; @@ -203,14 +206,13 @@ static int empeg_write (struct usb_serial_port *port, const unsigned char *buf, int bytes_sent = 0; int transfer_size; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); while (count > 0) { - /* try to find a free urb in our list of them */ urb = NULL; - spin_lock_irqsave (&write_urb_pool_lock, flags); + spin_lock_irqsave(&write_urb_pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { if (write_urb_pool[i]->status != -EINPROGRESS) { @@ -219,33 +221,35 @@ static int empeg_write (struct usb_serial_port *port, const unsigned char *buf, } } - spin_unlock_irqrestore (&write_urb_pool_lock, flags); + spin_unlock_irqrestore(&write_urb_pool_lock, flags); if (urb == NULL) { - dbg("%s - no more free urbs", __FUNCTION__); + dbg("%s - no more free urbs", __func__); goto exit; } if (urb->transfer_buffer == NULL) { - urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC); + urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_ATOMIC); if (urb->transfer_buffer == NULL) { - dev_err(&port->dev, "%s no more kernel memory...\n", __FUNCTION__); + dev_err(&port->dev, + "%s no more kernel memory...\n", + __func__); goto exit; } } - transfer_size = min (count, URB_TRANSFER_BUFFER_SIZE); + transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); - memcpy (urb->transfer_buffer, current_position, transfer_size); + memcpy(urb->transfer_buffer, current_position, transfer_size); - usb_serial_debug_data(debug, &port->dev, __FUNCTION__, transfer_size, urb->transfer_buffer); + usb_serial_debug_data(debug, &port->dev, __func__, transfer_size, urb->transfer_buffer); /* build up our urb */ - usb_fill_bulk_urb ( + usb_fill_bulk_urb( urb, serial->dev, usb_sndbulkpipe(serial->dev, - port->bulk_out_endpointAddress), + port->bulk_out_endpointAddress), urb->transfer_buffer, transfer_size, empeg_write_bulk_callback, @@ -254,7 +258,7 @@ static int empeg_write (struct usb_serial_port *port, const unsigned char *buf, /* send it down the pipe */ status = usb_submit_urb(urb, GFP_ATOMIC); if (status) { - dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n", __FUNCTION__, status); + dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n", __func__, status); bytes_sent = status; break; } @@ -265,75 +269,66 @@ static int empeg_write (struct usb_serial_port *port, const unsigned char *buf, bytes_out += transfer_size; } - exit: return bytes_sent; - -} +} -static int empeg_write_room (struct usb_serial_port *port) +static int empeg_write_room(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; unsigned long flags; int i; int room = 0; - dbg("%s - port %d", __FUNCTION__, port->number); - - spin_lock_irqsave (&write_urb_pool_lock, flags); + dbg("%s - port %d", __func__, port->number); + spin_lock_irqsave(&write_urb_pool_lock, flags); /* tally up the number of bytes available */ for (i = 0; i < NUM_URBS; ++i) { - if (write_urb_pool[i]->status != -EINPROGRESS) { + if (write_urb_pool[i]->status != -EINPROGRESS) room += URB_TRANSFER_BUFFER_SIZE; - } - } - - spin_unlock_irqrestore (&write_urb_pool_lock, flags); - - dbg("%s - returns %d", __FUNCTION__, room); - - return (room); + } + spin_unlock_irqrestore(&write_urb_pool_lock, flags); + dbg("%s - returns %d", __func__, room); + return room; } -static int empeg_chars_in_buffer (struct usb_serial_port *port) +static int empeg_chars_in_buffer(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; unsigned long flags; int i; int chars = 0; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave (&write_urb_pool_lock, flags); + spin_lock_irqsave(&write_urb_pool_lock, flags); /* tally up the number of bytes waiting */ for (i = 0; i < NUM_URBS; ++i) { - if (write_urb_pool[i]->status == -EINPROGRESS) { + if (write_urb_pool[i]->status == -EINPROGRESS) chars += URB_TRANSFER_BUFFER_SIZE; - } } - spin_unlock_irqrestore (&write_urb_pool_lock, flags); - - dbg("%s - returns %d", __FUNCTION__, chars); - - return (chars); - + spin_unlock_irqrestore(&write_urb_pool_lock, flags); + dbg("%s - returns %d", __func__, chars); + return chars; } -static void empeg_write_bulk_callback (struct urb *urb) +static void empeg_write_bulk_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; int status = urb->status; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); if (status) { dbg("%s - nonzero write bulk status received: %d", - __FUNCTION__, status); + __func__, status); return; } @@ -341,25 +336,25 @@ static void empeg_write_bulk_callback (struct urb *urb) } -static void empeg_read_bulk_callback (struct urb *urb) +static void empeg_read_bulk_callback(struct urb *urb) { - struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct usb_serial_port *port = urb->context; struct tty_struct *tty; unsigned char *data = urb->transfer_buffer; int result; int status = urb->status; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); if (status) { dbg("%s - nonzero read bulk status received: %d", - __FUNCTION__, status); + __func__, status); return; } - usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data); - - tty = port->tty; + usb_serial_debug_data(debug, &port->dev, __func__, + urb->actual_length, data); + tty = port->port.tty; if (urb->actual_length) { tty_buffer_request_room(tty, urb->actual_length); @@ -371,7 +366,7 @@ static void empeg_read_bulk_callback (struct urb *urb) /* Continue trying to always read */ usb_fill_bulk_urb( port->read_urb, - port->serial->dev, + port->serial->dev, usb_rcvbulkpipe(port->serial->dev, port->bulk_in_endpointAddress), port->read_urb->transfer_buffer, @@ -382,50 +377,51 @@ static void empeg_read_bulk_callback (struct urb *urb) result = usb_submit_urb(port->read_urb, GFP_ATOMIC); if (result) - dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __FUNCTION__, result); + dev_err(&urb->dev->dev, + "%s - failed resubmitting read urb, error %d\n", + __func__, result); return; } -static void empeg_throttle (struct usb_serial_port *port) +static void empeg_throttle(struct tty_struct *tty) { - dbg("%s - port %d", __FUNCTION__, port->number); + struct usb_serial_port *port = tty->driver_data; + dbg("%s - port %d", __func__, port->number); usb_kill_urb(port->read_urb); } -static void empeg_unthrottle (struct usb_serial_port *port) +static void empeg_unthrottle(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; int result; - - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); port->read_urb->dev = port->serial->dev; - result = usb_submit_urb(port->read_urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result); - - return; + dev_err(&port->dev, + "%s - failed submitting read urb, error %d\n", + __func__, result); } -static int empeg_startup (struct usb_serial *serial) +static int empeg_startup(struct usb_serial *serial) { int r; - dbg("%s", __FUNCTION__); + dbg("%s", __func__); if (serial->dev->actconfig->desc.bConfigurationValue != 1) { err("active config #%d != 1 ??", serial->dev->actconfig->desc.bConfigurationValue); return -ENODEV; } - dbg("%s - reset config", __FUNCTION__); - r = usb_reset_configuration (serial->dev); + dbg("%s - reset config", __func__); + r = usb_reset_configuration(serial->dev); /* continue on with initialization */ return r; @@ -433,34 +429,27 @@ static int empeg_startup (struct usb_serial *serial) } -static void empeg_shutdown (struct usb_serial *serial) +static void empeg_shutdown(struct usb_serial *serial) { - dbg ("%s", __FUNCTION__); + dbg("%s", __func__); } -static int empeg_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg) +static void empeg_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios) { - dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd); - - return -ENOIOCTLCMD; -} - - -static void empeg_set_termios (struct usb_serial_port *port, struct ktermios *old_termios) -{ - struct ktermios *termios = port->tty->termios; - dbg("%s - port %d", __FUNCTION__, port->number); + struct ktermios *termios = tty->termios; + dbg("%s - port %d", __func__, port->number); /* - * The empeg-car player wants these particular tty settings. - * You could, for example, change the baud rate, however the - * player only supports 115200 (currently), so there is really - * no point in support for changes to the tty settings. - * (at least for now) - * - * The default requirements for this device are: - */ + * The empeg-car player wants these particular tty settings. + * You could, for example, change the baud rate, however the + * player only supports 115200 (currently), so there is really + * no point in support for changes to the tty settings. + * (at least for now) + * + * The default requirements for this device are: + */ termios->c_iflag &= ~(IGNBRK /* disable ignore break */ | BRKINT /* disable break causes interrupt */ @@ -494,18 +483,18 @@ static void empeg_set_termios (struct usb_serial_port *port, struct ktermios *ol * this is bad as it opens up the possibility of dropping bytes * on the floor. We don't want to drop bytes on the floor. :) */ - port->tty->low_latency = 1; - tty_encode_baud_rate(port->tty, 115200, 115200); + tty->low_latency = 1; + tty_encode_baud_rate(tty, 115200, 115200); } -static int __init empeg_init (void) +static int __init empeg_init(void) { struct urb *urb; int i, retval; - /* create our write urb pool and transfer buffers */ - spin_lock_init (&write_urb_pool_lock); + /* create our write urb pool and transfer buffers */ + spin_lock_init(&write_urb_pool_lock); for (i = 0; i < NUM_URBS; ++i) { urb = usb_alloc_urb(0, GFP_KERNEL); write_urb_pool[i] = urb; @@ -514,10 +503,11 @@ static int __init empeg_init (void) continue; } - urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); + urb->transfer_buffer = kmalloc(URB_TRANSFER_BUFFER_SIZE, + GFP_KERNEL); if (!urb->transfer_buffer) { - err("%s - out of memory for urb buffers.", - __FUNCTION__); + err("%s - out of memory for urb buffers.", + __func__); continue; } } @@ -545,36 +535,36 @@ failed_usb_serial_register: } -static void __exit empeg_exit (void) +static void __exit empeg_exit(void) { int i; unsigned long flags; usb_deregister(&empeg_driver); - usb_serial_deregister (&empeg_device); + usb_serial_deregister(&empeg_device); - spin_lock_irqsave (&write_urb_pool_lock, flags); + spin_lock_irqsave(&write_urb_pool_lock, flags); for (i = 0; i < NUM_URBS; ++i) { if (write_urb_pool[i]) { - /* FIXME - uncomment the following usb_kill_urb call when - * the host controllers get fixed to set urb->dev = NULL after - * the urb is finished. Otherwise this call oopses. */ + /* FIXME - uncomment the following usb_kill_urb call + * when the host controllers get fixed to set urb->dev + * = NULL after the urb is finished. Otherwise this + * call oopses. */ /* usb_kill_urb(write_urb_pool[i]); */ kfree(write_urb_pool[i]->transfer_buffer); - usb_free_urb (write_urb_pool[i]); + usb_free_urb(write_urb_pool[i]); } } - - spin_unlock_irqrestore (&write_urb_pool_lock, flags); + spin_unlock_irqrestore(&write_urb_pool_lock, flags); } module_init(empeg_init); module_exit(empeg_exit); -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); module_param(debug, bool, S_IRUGO | S_IWUSR);