diff options
Diffstat (limited to 'drivers/usb/serial/keyspan_pda.c')
| -rw-r--r-- | drivers/usb/serial/keyspan_pda.c | 894 |
1 files changed, 894 insertions, 0 deletions
diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c new file mode 100644 index 000000000000..7fd0aa9eccf6 --- /dev/null +++ b/drivers/usb/serial/keyspan_pda.c @@ -0,0 +1,894 @@ +/* + * USB Keyspan PDA / Xircom / Entregra Converter driver + * + * Copyright (C) 1999 - 2001 Greg Kroah-Hartman <greg@kroah.com> + * Copyright (C) 1999, 2000 Brian Warner <warner@lothar.com> + * Copyright (C) 2000 Al Borchers <borchers@steinerpoint.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * See Documentation/usb/usb-serial.txt for more information on using this driver + * + * (09/07/2001) gkh + * cleaned up the Xircom support. Added ids for Entregra device which is + * the same as the Xircom device. Enabled the code to be compiled for + * either Xircom or Keyspan devices. + * + * (08/11/2001) Cristian M. Craciunescu + * support for Xircom PGSDB9 + * + * (05/31/2001) gkh + * switched from using spinlock to a semaphore, which fixes lots of problems. + * + * (04/08/2001) gb + * Identify version on module load. + * + * (11/01/2000) Adam J. Richter + * usb_device_id table support + * + * (10/05/2000) gkh + * Fixed bug with urb->dev not being set properly, now that the usb + * core needs it. + * + * (08/28/2000) gkh + * Added locks for SMP safeness. + * Fixed MOD_INC and MOD_DEC logic and the ability to open a port more + * than once. + * + * (07/20/2000) borchers + * - keyspan_pda_write no longer sleeps if it is called on interrupt time; + * PPP and the line discipline with stty echo on can call write on + * interrupt time and this would cause an oops if write slept + * - if keyspan_pda_write is in an interrupt, it will not call + * usb_control_msg (which sleeps) to query the room in the device + * buffer, it simply uses the current room value it has + * - if the urb is busy or if it is throttled keyspan_pda_write just + * returns 0, rather than sleeping to wait for this to change; the + * write_chan code in n_tty.c will sleep if needed before calling + * keyspan_pda_write again + * - if the device needs to be unthrottled, write now queues up the + * call to usb_control_msg (which sleeps) to unthrottle the device + * - the wakeups from keyspan_pda_write_bulk_callback are queued rather + * than done directly from the callback to avoid the race in write_chan + * - keyspan_pda_chars_in_buffer also indicates its buffer is full if the + * urb status is -EINPROGRESS, meaning it cannot write at the moment + * + * (07/19/2000) gkh + * Added module_init and module_exit functions to handle the fact that this + * driver is a loadable module now. + * + * (03/26/2000) gkh + * Split driver up into device specific pieces. + * + */ + + +#include <linux/config.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/tty.h> +#include <linux/tty_driver.h> +#include <linux/tty_flip.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> +#include <asm/uaccess.h> +#include <linux/usb.h> + +static int debug; + +struct ezusb_hex_record { + __u16 address; + __u8 data_size; + __u8 data[16]; +}; + +/* make a simple define to handle if we are compiling keyspan_pda or xircom support */ +#if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE) + #define KEYSPAN +#else + #undef KEYSPAN +#endif +#if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE) + #define XIRCOM +#else + #undef XIRCOM +#endif + +#ifdef KEYSPAN +#include "keyspan_pda_fw.h" +#endif + +#ifdef XIRCOM +#include "xircom_pgs_fw.h" +#endif + +#include "usb-serial.h" + +/* + * Version Information + */ +#define DRIVER_VERSION "v1.1" +#define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>" +#define DRIVER_DESC "USB Keyspan PDA Converter driver" + +struct keyspan_pda_private { + int tx_room; + int tx_throttled; + struct work_struct wakeup_work; + struct work_struct unthrottle_work; +}; + + +#define KEYSPAN_VENDOR_ID 0x06cd +#define KEYSPAN_PDA_FAKE_ID 0x0103 +#define KEYSPAN_PDA_ID 0x0104 /* no clue */ + +/* For Xircom PGSDB9 and older Entregra version of the same device */ +#define XIRCOM_VENDOR_ID 0x085a +#define XIRCOM_FAKE_ID 0x8027 +#define ENTREGRA_VENDOR_ID 0x1645 +#define ENTREGRA_FAKE_ID 0x8093 + +static struct usb_device_id id_table_combined [] = { +#ifdef KEYSPAN + { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, +#endif +#ifdef XIRCOM + { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) }, + { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) }, +#endif + { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) }, + { } /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE (usb, id_table_combined); + +static struct usb_driver keyspan_pda_driver = { + .owner = THIS_MODULE, + .name = "keyspan_pda", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table_combined, +}; + +static struct usb_device_id id_table_std [] = { + { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) }, + { } /* Terminating entry */ +}; + +#ifdef KEYSPAN +static struct usb_device_id id_table_fake [] = { + { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) }, + { } /* Terminating entry */ +}; +#endif + +#ifdef XIRCOM +static struct usb_device_id id_table_fake_xircom [] = { + { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) }, + { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) }, + { } +}; +#endif + +static void keyspan_pda_wakeup_write( struct usb_serial_port *port ) +{ + + struct tty_struct *tty = port->tty; + + /* wake up port processes */ + wake_up_interruptible( &port->write_wait ); + + /* wake up line discipline */ + tty_wakeup(tty); +} + +static void keyspan_pda_request_unthrottle( struct usb_serial *serial ) +{ + int result; + + dbg(" request_unthrottle"); + /* ask the device to tell us when the tx buffer becomes + sufficiently empty */ + result = usb_control_msg(serial->dev, + usb_sndctrlpipe(serial->dev, 0), + 7, /* request_unthrottle */ + USB_TYPE_VENDOR | USB_RECIP_INTERFACE + | USB_DIR_OUT, + 16, /* value: threshold */ + 0, /* index */ + NULL, + 0, + 2000); + if (result < 0) + dbg("%s - error %d from usb_control_msg", + __FUNCTION__, result); +} + + +static void keyspan_pda_rx_interrupt (struct urb *urb, struct pt_regs *regs) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct tty_struct *tty = port->tty; + unsigned char *data = urb->transfer_buffer; + int i; + int status; + struct keyspan_pda_private *priv; + priv = usb_get_serial_port_data(port); + + switch (urb->status) { + case 0: + /* success */ + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status); + return; + default: + dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status); + goto exit; + } + + /* see if the message is data or a status interrupt */ + switch (data[0]) { + case 0: + /* rest of message is rx data */ + if (urb->actual_length) { + for (i = 1; i < urb->actual_length ; ++i) { + tty_insert_flip_char(tty, data[i], 0); + } + tty_flip_buffer_push(tty); + } + break; + case 1: + /* status interrupt */ + dbg(" rx int, d1=%d, d2=%d", data[1], data[2]); + switch (data[1]) { + case 1: /* modemline change */ + break; + case 2: /* tx unthrottle interrupt */ + priv->tx_throttled = 0; + /* queue up a wakeup at scheduler time */ + schedule_work(&priv->wakeup_work); + break; + default: + break; + } + break; + default: + break; + } + +exit: + status = usb_submit_urb (urb, GFP_ATOMIC); + if (status) + err ("%s - usb_submit_urb failed with result %d", + __FUNCTION__, status); +} + + +static void keyspan_pda_rx_throttle (struct usb_serial_port *port) +{ + /* stop receiving characters. We just turn off the URB request, and + let chars pile up in the device. If we're doing hardware + flowcontrol, the device will signal the other end when its buffer + fills up. If we're doing XON/XOFF, this would be a good time to + send an XOFF, although it might make sense to foist that off + upon the device too. */ + + dbg("keyspan_pda_rx_throttle port %d", port->number); + usb_kill_urb(port->interrupt_in_urb); +} + + +static void keyspan_pda_rx_unthrottle (struct usb_serial_port *port) +{ + /* just restart the receive interrupt URB */ + dbg("keyspan_pda_rx_unthrottle port %d", port->number); + port->interrupt_in_urb->dev = port->serial->dev; + if (usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC)) + dbg(" usb_submit_urb(read urb) failed"); + return; +} + + +static int keyspan_pda_setbaud (struct usb_serial *serial, int baud) +{ + int rc; + int bindex; + + switch(baud) { + case 110: bindex = 0; break; + case 300: bindex = 1; break; + case 1200: bindex = 2; break; + case 2400: bindex = 3; break; + case 4800: bindex = 4; break; + case 9600: bindex = 5; break; + case 19200: bindex = 6; break; + case 38400: bindex = 7; break; + case 57600: bindex = 8; break; + case 115200: bindex = 9; break; + default: return -EINVAL; + } + + /* rather than figure out how to sleep while waiting for this + to complete, I just use the "legacy" API. */ + rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + 0, /* set baud */ + USB_TYPE_VENDOR + | USB_RECIP_INTERFACE + | USB_DIR_OUT, /* type */ + bindex, /* value */ + 0, /* index */ + NULL, /* &data */ + 0, /* size */ + 2000); /* timeout */ + return(rc); +} + + +static void keyspan_pda_break_ctl (struct usb_serial_port *port, int break_state) +{ + struct usb_serial *serial = port->serial; + int value; + int result; + + if (break_state == -1) + value = 1; /* start break */ + else + value = 0; /* clear break */ + result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + 4, /* set break */ + USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT, + value, 0, NULL, 0, 2000); + if (result < 0) + dbg("%s - error %d from usb_control_msg", + __FUNCTION__, result); + /* there is something funky about this.. the TCSBRK that 'cu' performs + ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4 + seconds apart, but it feels like the break sent isn't as long as it + is on /dev/ttyS0 */ +} + + +static void keyspan_pda_set_termios (struct usb_serial_port *port, + struct termios *old_termios) +{ + struct usb_serial *serial = port->serial; + unsigned int cflag = port->tty->termios->c_cflag; + + /* cflag specifies lots of stuff: number of stop bits, parity, number + of data bits, baud. What can the device actually handle?: + CSTOPB (1 stop bit or 2) + PARENB (parity) + CSIZE (5bit .. 8bit) + There is minimal hw support for parity (a PSW bit seems to hold the + parity of whatever is in the accumulator). The UART either deals + with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data, + 1 special, stop). So, with firmware changes, we could do: + 8N1: 10 bit + 8N2: 11 bit, extra bit always (mark?) + 8[EOMS]1: 11 bit, extra bit is parity + 7[EOMS]1: 10 bit, b0/b7 is parity + 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?) + + HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS + bit. + + For now, just do baud. */ + + switch (cflag & CBAUD) { + /* we could support more values here, just need to calculate + the necessary divisors in the firmware. <asm/termbits.h> + has the Bnnn constants. */ + case B110: keyspan_pda_setbaud(serial, 110); break; + case B300: keyspan_pda_setbaud(serial, 300); break; + case B1200: keyspan_pda_setbaud(serial, 1200); break; + case B2400: keyspan_pda_setbaud(serial, 2400); break; + case B4800: keyspan_pda_setbaud(serial, 4800); break; + case B9600: keyspan_pda_setbaud(serial, 9600); break; + case B19200: keyspan_pda_setbaud(serial, 19200); break; + case B38400: keyspan_pda_setbaud(serial, 38400); break; + case B57600: keyspan_pda_setbaud(serial, 57600); break; + case B115200: keyspan_pda_setbaud(serial, 115200); break; + default: dbg("can't handle requested baud rate"); break; + } +} + + +/* modem control pins: DTR and RTS are outputs and can be controlled. + DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be + read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */ + +static int keyspan_pda_get_modem_info(struct usb_serial *serial, + unsigned char *value) +{ + int rc; + unsigned char data; + rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + 3, /* get pins */ + USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN, + 0, 0, &data, 1, 2000); + if (rc > 0) + *value = data; + return rc; +} + + +static int keyspan_pda_set_modem_info(struct usb_serial *serial, + unsigned char value) +{ + int rc; + rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + 3, /* set pins */ + USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT, + value, 0, NULL, 0, 2000); + return rc; +} + +static int keyspan_pda_tiocmget(struct usb_serial_port *port, struct file *file) +{ + struct usb_serial *serial = port->serial; + int rc; + unsigned char status; + int value; + + rc = keyspan_pda_get_modem_info(serial, &status); + if (rc < 0) + return rc; + value = + ((status & (1<<7)) ? TIOCM_DTR : 0) | + ((status & (1<<6)) ? TIOCM_CAR : 0) | + ((status & (1<<5)) ? TIOCM_RNG : 0) | + ((status & (1<<4)) ? TIOCM_DSR : 0) | + ((status & (1<<3)) ? TIOCM_CTS : 0) | + ((status & (1<<2)) ? TIOCM_RTS : 0); + return value; +} + +static int keyspan_pda_tiocmset(struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear) +{ + struct usb_serial *serial = port->serial; + int rc; + unsigned char status; + + rc = keyspan_pda_get_modem_info(serial, &status); + if (rc < 0) + return rc; + + if (set & TIOCM_RTS) + status |= (1<<2); + if (set & TIOCM_DTR) + status |= (1<<7); + + if (clear & TIOCM_RTS) + status &= ~(1<<2); + if (clear & TIOCM_DTR) + status &= ~(1<<7); + rc = keyspan_pda_set_modem_info(serial, status); + return rc; +} + +static int keyspan_pda_ioctl(struct usb_serial_port *port, struct file *file, + unsigned int cmd, unsigned long arg) +{ + switch (cmd) { + case TIOCMIWAIT: + /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/ + /* TODO */ + case TIOCGICOUNT: + /* return count of modemline transitions */ + return 0; /* TODO */ + } + + return -ENOIOCTLCMD; +} + +static int keyspan_pda_write(struct usb_serial_port *port, + const unsigned char *buf, int count) +{ + struct usb_serial *serial = port->serial; + int request_unthrottle = 0; + int rc = 0; + struct keyspan_pda_private *priv; + + priv = usb_get_serial_port_data(port); + /* guess how much room is left in the device's ring buffer, and if we + want to send more than that, check first, updating our notion of + what is left. If our write will result in no room left, ask the + device to give us an interrupt when the room available rises above + a threshold, and hold off all writers (eventually, those using + select() or poll() too) until we receive that unthrottle interrupt. + Block if we can't write anything at all, otherwise write as much as + we can. */ + dbg("keyspan_pda_write(%d)",count); + if (count == 0) { + dbg(" write request of 0 bytes"); + return (0); + } + + /* we might block because of: + the TX urb is in-flight (wait until it completes) + the device is full (wait until it says there is room) + */ + if (port->write_urb->status == -EINPROGRESS || priv->tx_throttled ) { + return( 0 ); + } + + /* At this point the URB is in our control, nobody else can submit it + again (the only sudden transition was the one from EINPROGRESS to + finished). Also, the tx process is not throttled. So we are + ready to write. */ + + count = (count > port->bulk_out_size) ? port->bulk_out_size : count; + + /* Check if we might overrun the Tx buffer. If so, ask the + device how much room it really has. This is done only on + scheduler time, since usb_control_msg() sleeps. */ + if (count > priv->tx_room && !in_interrupt()) { + unsigned char room; + rc = usb_control_msg(serial->dev, + usb_rcvctrlpipe(serial->dev, 0), + 6, /* write_room */ + USB_TYPE_VENDOR | USB_RECIP_INTERFACE + | USB_DIR_IN, + 0, /* value: 0 means "remaining room" */ + 0, /* index */ + &room, + 1, + 2000); + if (rc < 0) { + dbg(" roomquery failed"); + goto exit; + } + if (rc == 0) { + dbg(" roomquery returned 0 bytes"); + rc = -EIO; /* device didn't return any data */ + goto exit; + } + dbg(" roomquery says %d", room); + priv->tx_room = room; + } + if (count > priv->tx_room) { + /* we're about to completely fill the Tx buffer, so + we'll be throttled afterwards. */ + count = priv->tx_room; + request_unthrottle = 1; + } + + if (count) { + /* now transfer data */ + memcpy (port->write_urb->transfer_buffer, buf, count); + /* send the data out the bulk port */ + port->write_urb->transfer_buffer_length = count; + + priv->tx_room -= count; + + port->write_urb->dev = port->serial->dev; + rc = usb_submit_urb(port->write_urb, GFP_ATOMIC); + if (rc) { + dbg(" usb_submit_urb(write bulk) failed"); + goto exit; + } + } + else { + /* There wasn't any room left, so we are throttled until + the buffer empties a bit */ + request_unthrottle = 1; + } + + if (request_unthrottle) { + priv->tx_throttled = 1; /* block writers */ + schedule_work(&priv->unthrottle_work); + } + + rc = count; +exit: + return rc; +} + + +static void keyspan_pda_write_bulk_callback (struct urb *urb, struct pt_regs *regs) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct keyspan_pda_private *priv; + + priv = usb_get_serial_port_data(port); + + /* queue up a wakeup at scheduler time */ + schedule_work(&priv->wakeup_work); +} + + +static int keyspan_pda_write_room (struct usb_serial_port *port) +{ + struct keyspan_pda_private *priv; + + priv = usb_get_serial_port_data(port); + + /* used by n_tty.c for processing of tabs and such. Giving it our + conservative guess is probably good enough, but needs testing by + running a console through the device. */ + + return (priv->tx_room); +} + + +static int keyspan_pda_chars_in_buffer (struct usb_serial_port *port) +{ + struct keyspan_pda_private *priv; + + priv = usb_get_serial_port_data(port); + + /* when throttled, return at least WAKEUP_CHARS to tell select() (via + n_tty.c:normal_poll() ) that we're not writeable. */ + if( port->write_urb->status == -EINPROGRESS || priv->tx_throttled ) + return 256; + return 0; +} + + +static int keyspan_pda_open (struct usb_serial_port *port, struct file *filp) +{ + struct usb_serial *serial = port->serial; + unsigned char room; + int rc = 0; + struct keyspan_pda_private *priv; + + /* find out how much room is in the Tx ring */ + rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + 6, /* write_room */ + USB_TYPE_VENDOR | USB_RECIP_INTERFACE + | USB_DIR_IN, + 0, /* value */ + 0, /* index */ + &room, + 1, + 2000); + if (rc < 0) { + dbg("%s - roomquery failed", __FUNCTION__); + goto error; + } + if (rc == 0) { + dbg("%s - roomquery returned 0 bytes", __FUNCTION__); + rc = -EIO; + goto error; + } + priv = usb_get_serial_port_data(port); + priv->tx_room = room; + priv->tx_throttled = room ? 0 : 1; + + /* the normal serial device seems to always turn on DTR and RTS here, + so do the same */ + if (port->tty->termios->c_cflag & CBAUD) + keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2) ); + else + keyspan_pda_set_modem_info(serial, 0); + + /*Start reading from the device*/ + port->interrupt_in_urb->dev = serial->dev; + rc = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); + if (rc) { + dbg("%s - usb_submit_urb(read int) failed", __FUNCTION__); + goto error; + } + +error: + return rc; +} + + +static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp) +{ + struct usb_serial *serial = port->serial; + + if (serial->dev) { + /* the normal serial device seems to always shut off DTR and RTS now */ + if (port->tty->termios->c_cflag & HUPCL) + keyspan_pda_set_modem_info(serial, 0); + + /* shutdown our bulk reads and writes */ + usb_kill_urb(port->write_urb); + usb_kill_urb(port->interrupt_in_urb); + } +} + + +/* download the firmware to a "fake" device (pre-renumeration) */ +static int keyspan_pda_fake_startup (struct usb_serial *serial) +{ + int response; + const struct ezusb_hex_record *record = NULL; + + /* download the firmware here ... */ + response = ezusb_set_reset(serial, 1); + +#ifdef KEYSPAN + if (le16_to_cpu(serial->dev->descriptor.idVendor) == KEYSPAN_VENDOR_ID) + record = &keyspan_pda_firmware[0]; +#endif +#ifdef XIRCOM + if ((le16_to_cpu(serial->dev->descriptor.idVendor) == XIRCOM_VENDOR_ID) || + (le16_to_cpu(serial->dev->descriptor.idVendor) == ENTREGRA_VENDOR_ID)) + record = &xircom_pgs_firmware[0]; +#endif + if (record == NULL) { + err("%s: unknown vendor, aborting.", __FUNCTION__); + return -ENODEV; + } + + while(record->address != 0xffff) { + response = ezusb_writememory(serial, record->address, + (unsigned char *)record->data, + record->data_size, 0xa0); + if (response < 0) { + err("ezusb_writememory failed for Keyspan PDA " + "firmware (%d %04X %p %d)", + response, + record->address, record->data, record->data_size); + break; + } + record++; + } + /* bring device out of reset. Renumeration will occur in a moment + and the new device will bind to the real driver */ + response = ezusb_set_reset(serial, 0); + + /* we want this device to fail to have a driver assigned to it. */ + return (1); +} + +static int keyspan_pda_startup (struct usb_serial *serial) +{ + + struct keyspan_pda_private *priv; + + /* allocate the private data structures for all ports. Well, for all + one ports. */ + + priv = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL); + if (!priv) + return (1); /* error */ + usb_set_serial_port_data(serial->port[0], priv); + init_waitqueue_head(&serial->port[0]->write_wait); + INIT_WORK(&priv->wakeup_work, (void *)keyspan_pda_wakeup_write, + (void *)(serial->port[0])); + INIT_WORK(&priv->unthrottle_work, + (void *)keyspan_pda_request_unthrottle, + (void *)(serial)); + return (0); +} + +static void keyspan_pda_shutdown (struct usb_serial *serial) +{ + dbg("%s", __FUNCTION__); + + kfree(usb_get_serial_port_data(serial->port[0])); +} + +#ifdef KEYSPAN +static struct usb_serial_device_type keyspan_pda_fake_device = { + .owner = THIS_MODULE, + .name = "Keyspan PDA - (prerenumeration)", + .short_name = "keyspan_pda_pre", + .id_table = id_table_fake, + .num_interrupt_in = NUM_DONT_CARE, + .num_bulk_in = NUM_DONT_CARE, + .num_bulk_out = NUM_DONT_CARE, + .num_ports = 1, + .attach = keyspan_pda_fake_startup, +}; +#endif + +#ifdef XIRCOM +static struct usb_serial_device_type xircom_pgs_fake_device = { + .owner = THIS_MODULE, + .name = "Xircom / Entregra PGS - (prerenumeration)", + .short_name = "xircom_no_firm", + .id_table = id_table_fake_xircom, + .num_interrupt_in = NUM_DONT_CARE, + .num_bulk_in = NUM_DONT_CARE, + .num_bulk_out = NUM_DONT_CARE, + .num_ports = 1, + .attach = keyspan_pda_fake_startup, +}; +#endif + +static struct usb_serial_device_type keyspan_pda_device = { + .owner = THIS_MODULE, + .name = "Keyspan PDA", + .short_name = "keyspan_pda", + .id_table = id_table_std, + .num_interrupt_in = 1, + .num_bulk_in = 0, + .num_bulk_out = 1, + .num_ports = 1, + .open = keyspan_pda_open, + .close = keyspan_pda_close, + .write = keyspan_pda_write, + .write_room = keyspan_pda_write_room, + .write_bulk_callback = keyspan_pda_write_bulk_callback, + .read_int_callback = keyspan_pda_rx_interrupt, + .chars_in_buffer = keyspan_pda_chars_in_buffer, + .throttle = keyspan_pda_rx_throttle, + .unthrottle = keyspan_pda_rx_unthrottle, + .ioctl = keyspan_pda_ioctl, + .set_termios = keyspan_pda_set_termios, + .break_ctl = keyspan_pda_break_ctl, + .tiocmget = keyspan_pda_tiocmget, + .tiocmset = keyspan_pda_tiocmset, + .attach = keyspan_pda_startup, + .shutdown = keyspan_pda_shutdown, +}; + + +static int __init keyspan_pda_init (void) +{ + int retval; + retval = usb_serial_register(&keyspan_pda_device); + if (retval) + goto failed_pda_register; +#ifdef KEYSPAN + retval = usb_serial_register(&keyspan_pda_fake_device); + if (retval) + goto failed_pda_fake_register; +#endif +#ifdef XIRCOM + retval = usb_serial_register(&xircom_pgs_fake_device); + if (retval) + goto failed_xircom_register; +#endif + retval = usb_register(&keyspan_pda_driver); + if (retval) + goto failed_usb_register; + info(DRIVER_DESC " " DRIVER_VERSION); + return 0; +failed_usb_register: +#ifdef XIRCOM + usb_serial_deregister(&xircom_pgs_fake_device); +failed_xircom_register: +#endif /* XIRCOM */ +#ifdef KEYSPAN + usb_serial_deregister(&keyspan_pda_fake_device); +#endif +#ifdef KEYSPAN +failed_pda_fake_register: +#endif + usb_serial_deregister(&keyspan_pda_device); +failed_pda_register: + return retval; +} + + +static void __exit keyspan_pda_exit (void) +{ + usb_deregister (&keyspan_pda_driver); + usb_serial_deregister (&keyspan_pda_device); +#ifdef KEYSPAN + usb_serial_deregister (&keyspan_pda_fake_device); +#endif +#ifdef XIRCOM + usb_serial_deregister (&xircom_pgs_fake_device); +#endif +} + + +module_init(keyspan_pda_init); +module_exit(keyspan_pda_exit); + +MODULE_AUTHOR( DRIVER_AUTHOR ); +MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_LICENSE("GPL"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug enabled or not"); + |