diff options
Diffstat (limited to 'package/sierra-directip/src/sierra.c')
| -rw-r--r-- | package/sierra-directip/src/sierra.c | 1409 |
1 files changed, 1409 insertions, 0 deletions
diff --git a/package/sierra-directip/src/sierra.c b/package/sierra-directip/src/sierra.c new file mode 100644 index 0000000000..9752d11422 --- /dev/null +++ b/package/sierra-directip/src/sierra.c @@ -0,0 +1,1409 @@ +/* + USB Driver for Sierra Wireless + + Copyright (C) 2006, 2007, 2008 Kevin Lloyd <klloyd@sierrawireless.com>, + + Copyright (C) 2008 - 2011 Elina Pasheva, Matthew Safar, Rory Filer + <linux@sierrawireless.com> + + IMPORTANT DISCLAIMER: This driver is not commercially supported by + Sierra Wireless. Use at your own risk. + + This driver is free software; you can redistribute it and/or modify + it under the terms of Version 2 of the GNU General Public License as + published by the Free Software Foundation. + + Portions based on the option driver by Matthias Urlichs <smurf@smurf.noris.de> + Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org> +*/ +/* Uncomment to log function calls */ +/*#define DEBUG*/ +/* Uncomment to force power level set to auto when attaching a device */ +/*#define POWER_LEVEL_AUTO*/ + +/* Sierra driver - kernel 3.0 */ +#define DRIVER_VERSION "v.1.7.40" +#define DRIVER_AUTHOR "Kevin Lloyd, Elina Pasheva, Matthew Safar, Rory Filer" +#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems" + +#include <linux/kernel.h> +#include <linux/jiffies.h> +#include <linux/errno.h> +#include <linux/tty.h> +#include <linux/slab.h> +#include <linux/tty_flip.h> +#include <linux/module.h> +#include <linux/usb.h> +#include <linux/usb/serial.h> +#include <asm/unaligned.h> + +#define SWIMS_USB_REQUEST_SetPower 0x00 +#define SWIMS_USB_REQUEST_GetFwAttr 0x06 +#define SWIMS_USB_REQUEST_SetNmea 0x07 +#define USB_REQUEST_TYPE_CLASS 0xA1 +#define USB_REQUEST_IFACE 0x20 + +#define N_IN_URB_HM 8 +#define N_OUT_URB_HM 64 +#define N_IN_URB 4 +#define N_OUT_URB 4 +#define IN_BUFLEN 4096 + +#define MAX_TRANSFER (PAGE_SIZE - 512) +/* MAX_TRANSFER is chosen so that the VM is not stressed by + allocations > PAGE_SIZE and the number of packets in a page + is an integer 512 is the largest possible packet on EHCI */ + +#define SWI_FW_ATTR_PM_MASK 0x02 +/* PORTION_LEN defines the length of device attribute buffer */ +#define PORTION_LEN 4096 + +static int debug; +static int nmea; + +/* sysfs attributes */ +static int sierra_create_sysfs_attrs(struct usb_serial_port *port); +static int sierra_remove_sysfs_attrs(struct usb_serial_port *port); + +/* Used in interface blacklisting */ +struct sierra_iface_info { + const u32 infolen; /* number of interface numbers on blacklist */ + const u8 *ifaceinfo; /* pointer to the array holding the numbers */ +}; + +/* per interface statistics */ +struct sierra_intf_stats { + atomic_t rx_bytes; /* received bytes */ + atomic_t indat_cb_cnt; /* indat callback count */ + atomic_t indat_cb_fail; /* indat cb with error */ + + atomic_t tx_bytes; /* transmitted bytes */ + atomic_t write_cnt; /* no. of writes */ + atomic_t write_err; /* no. of failed writes */ + + atomic_t delayed_writes; /* no. of delayed writes */ + atomic_t delayed_write_err; /* no. of delayed write errs */ + + atomic_t outdat_cb_cnt; /* outdat callback count */ + atomic_t outdat_cb_fail; /* outdat cb with error */ + +}; + +struct sierra_intf_private { + spinlock_t susp_lock; + unsigned int suspended:1; + int in_flight; + + struct sierra_intf_stats stats; +}; + +static int sierra_set_power_state(struct usb_device *udev, __u16 swiState) +{ + int result; + dev_dbg(&udev->dev, "%s\n", __func__); + result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + SWIMS_USB_REQUEST_SetPower, /* __u8 request */ + USB_TYPE_VENDOR, /* __u8 request type */ + swiState, /* __u16 value */ + 0, /* __u16 index */ + NULL, /* void *data */ + 0, /* __u16 size */ + USB_CTRL_SET_TIMEOUT); /* int timeout */ + return result; +} + +static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable) +{ + int result; + dev_dbg(&udev->dev, "%s\n", __func__); + result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + SWIMS_USB_REQUEST_SetNmea, /* __u8 request */ + USB_TYPE_VENDOR, /* __u8 request type */ + enable, /* __u16 value */ + 0x0000, /* __u16 index */ + NULL, /* void *data */ + 0, /* __u16 size */ + USB_CTRL_SET_TIMEOUT); /* int timeout */ + return result; +} + +static int sierra_get_fw_attr(struct usb_device *udev, u16 *data) +{ + int result; + u16 *attrdata; + + dev_dbg(&udev->dev, "%s\n", __func__); + + attrdata = kmalloc(sizeof(*attrdata), GFP_KERNEL); + if (!attrdata) + return -ENOMEM; + + result = usb_control_msg(udev, + usb_rcvctrlpipe(udev, 0), + SWIMS_USB_REQUEST_GetFwAttr, /* __u8 request*/ + USB_TYPE_VENDOR | USB_DIR_IN, /* request type*/ + 0x0000, /* __u16 value */ + 0x0000, /* __u16 index */ + attrdata, /* void *data */ + sizeof(*attrdata), /* _u16 size */ + USB_CTRL_SET_TIMEOUT); /* in timeout */ + + if (result < 0) { + kfree(attrdata); + return -EIO; + } + + *data = *attrdata; + + kfree(attrdata); + return result; +} + +static int sierra_calc_num_ports(struct usb_serial *serial) +{ + int num_ports = 0; + u8 ifnum, numendpoints; + + dev_dbg(&serial->dev->dev, "%s\n", __func__); + + ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; + numendpoints = serial->interface->cur_altsetting->desc.bNumEndpoints; + + /* Dummy interface present on some SKUs should be ignored */ + if (ifnum == 0x99) + num_ports = 0; + else if (numendpoints <= 3) + num_ports = 1; + else + num_ports = (numendpoints-1)/2; + return num_ports; +} + +static int is_blacklisted(const u8 ifnum, + const struct sierra_iface_info *blacklist) +{ + const u8 *info; + int i; + + if (blacklist) { + info = blacklist->ifaceinfo; + + for (i = 0; i < blacklist->infolen; i++) { + if (info[i] == ifnum) + return 1; + } + } + return 0; +} + +static int is_himemory(const u8 ifnum, + const struct sierra_iface_info *himemorylist) +{ + const u8 *info; + int i; + + if (himemorylist) { + info = himemorylist->ifaceinfo; + + for (i=0; i < himemorylist->infolen; i++) { + if (info[i] == ifnum) + return 1; + } + } + return 0; +} + +static int sierra_calc_interface(struct usb_serial *serial) +{ + int interface; + struct usb_interface *p_interface; + struct usb_host_interface *p_host_interface; + + /* Get the interface structure pointer from the serial struct */ + p_interface = serial->interface; + + /* Get a pointer to the host interface structure */ + p_host_interface = p_interface->cur_altsetting; + + /* read the interface descriptor for this active altsetting + * to find out the interface number we are on */ + interface = p_host_interface->desc.bInterfaceNumber; + + return interface; +} + +static int sierra_probe(struct usb_serial *serial, + const struct usb_device_id *id) +{ + int result = 0; + struct usb_device *udev; + struct sierra_intf_private *intfdata; + u8 ifnum; + + udev = serial->dev; + dev_dbg(&udev->dev, "%s\n", __func__); + + ifnum = sierra_calc_interface(serial); + /* + * If this interface supports more than 1 alternate + * select the 2nd one + */ + if (serial->interface->num_altsetting == 2) { + dev_dbg(&udev->dev, "Selecting alt setting for interface %d\n", + ifnum); + /* We know the alternate setting is for composite USB interface + * modems + */ + usb_set_interface(udev, ifnum, 1); + } + + /* ifnum could have changed - by calling usb_set_interface */ + ifnum = sierra_calc_interface(serial); + + if (is_blacklisted(ifnum, + (struct sierra_iface_info *)id->driver_info)) { + dev_dbg(&serial->dev->dev, + "Ignoring blacklisted interface #%d\n", ifnum); + return -ENODEV; + } + + intfdata = serial->private = kzalloc(sizeof(struct sierra_intf_private), + GFP_KERNEL); + if (!intfdata) + return -ENOMEM; + spin_lock_init(&intfdata->susp_lock); + + return result; +} + +/* interfaces with higher memory requirements */ +static const u8 hi_memory_typeA_ifaces[] = { 0, 2 }; +static const struct sierra_iface_info typeA_interface_list = { + .infolen = ARRAY_SIZE(hi_memory_typeA_ifaces), + .ifaceinfo = hi_memory_typeA_ifaces, +}; + +static const u8 hi_memory_typeB_ifaces[] = { 3, 4, 5, 6 }; +static const struct sierra_iface_info typeB_interface_list = { + .infolen = ARRAY_SIZE(hi_memory_typeB_ifaces), + .ifaceinfo = hi_memory_typeB_ifaces, +}; + +/* 'blacklist' of interfaces not served by this driver */ +static const u8 direct_ip_non_serial_ifaces[] = { 7, 8, 9, 10, 11 }; +static const struct sierra_iface_info direct_ip_interface_blacklist = { + .infolen = ARRAY_SIZE( direct_ip_non_serial_ifaces ), + .ifaceinfo = direct_ip_non_serial_ifaces, +}; + +static const struct usb_device_id id_table [] = { + { USB_DEVICE(0x0F3D, 0x0112) }, /* Airprime/Sierra PC 5220 */ + { USB_DEVICE(0x03F0, 0x1B1D) }, /* HP ev2200 a.k.a MC5720 */ + { USB_DEVICE(0x03F0, 0x1E1D) }, /* HP hs2300 a.k.a MC8775 */ + { USB_DEVICE(0x03F0, 0x211D) }, /* HP ev2210 a.k.a MC5725 */ + + { USB_DEVICE(0x1199, 0x0017) }, /* Sierra Wireless EM5625 */ + { USB_DEVICE(0x1199, 0x0018) }, /* Sierra Wireless MC5720 */ + { USB_DEVICE(0x1199, 0x0218) }, /* Sierra Wireless MC5720 */ + { USB_DEVICE(0x1199, 0x0020) }, /* Sierra Wireless MC5725 */ + { USB_DEVICE(0x1199, 0x0220) }, /* Sierra Wireless MC5725 */ + { USB_DEVICE(0x1199, 0x0022) }, /* Sierra Wireless EM5725 */ + { USB_DEVICE(0x1199, 0x0024) }, /* Sierra Wireless MC5727 */ + { USB_DEVICE(0x1199, 0x0224) }, /* Sierra Wireless MC5727 */ + { USB_DEVICE(0x1199, 0x0019) }, /* Sierra Wireless AirCard 595 */ + { USB_DEVICE(0x1199, 0x0021) }, /* Sierra Wireless AirCard 597E */ + { USB_DEVICE(0x1199, 0x0112) }, /* Sierra Wireless AirCard 580 */ + { USB_DEVICE(0x1199, 0x0120) }, /* Sierra Wireless USB Dongle 595U */ + { USB_DEVICE(0x1199, 0x0301) }, /* Sierra Wireless USB Dongle 250U/3G */ + /* Sierra Wireless MC5728 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0400, 0xFF, 0xFF, 0xFF) }, + + /* Sierra Wireless C597 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0023, 0xFF, 0xFF, 0xFF) }, + /* Sierra Wireless T598 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x0025, 0xFF, 0xFF, 0xFF) }, + { USB_DEVICE(0x1199, 0x0026) }, /* Sierra Wireless T11 */ + { USB_DEVICE(0x1199, 0x0027) }, /* Sierra Wireless AC402 */ + { USB_DEVICE(0x1199, 0x0028) }, /* Sierra Wireless MC5728 */ + { USB_DEVICE(0x114F, 0x6000) }, /* Sierra Wireless Q26 Elite */ + + { USB_DEVICE(0x1199, 0x6802) }, /* Sierra Wireless MC8755 */ + { USB_DEVICE(0x1199, 0x6803) }, /* Sierra Wireless MC8765 */ + { USB_DEVICE(0x1199, 0x6804) }, /* Sierra Wireless MC8755 */ + { USB_DEVICE(0x1199, 0x6805) }, /* Sierra Wireless MC8765 */ + { USB_DEVICE(0x1199, 0x6808) }, /* Sierra Wireless MC8755 */ + { USB_DEVICE(0x1199, 0x6809) }, /* Sierra Wireless MC8765 */ + { USB_DEVICE(0x1199, 0x6812) }, /* Sierra Wireless MC8775 & AC 875U */ + { USB_DEVICE(0x1199, 0x6813) }, /* Sierra Wireless MC8775 */ + { USB_DEVICE(0x1199, 0x6815) }, /* Sierra Wireless MC8775 */ + { USB_DEVICE(0x1199, 0x6816) }, /* Sierra Wireless MC8775 */ + { USB_DEVICE(0x1199, 0x6820) }, /* Sierra Wireless AirCard 875 */ + { USB_DEVICE(0x1199, 0x6821) }, /* Sierra Wireless AirCard 875U */ + { USB_DEVICE(0x1199, 0x6822) }, /* Sierra Wireless AirCard 875E */ + { USB_DEVICE(0x1199, 0x6832) }, /* Sierra Wireless MC8780 */ + { USB_DEVICE(0x1199, 0x6833) }, /* Sierra Wireless MC8781 */ + { USB_DEVICE(0x1199, 0x6834) }, /* Sierra Wireless MC8780 */ + { USB_DEVICE(0x1199, 0x6835) }, /* Sierra Wireless MC8781 */ + { USB_DEVICE(0x1199, 0x6838) }, /* Sierra Wireless MC8780 */ + { USB_DEVICE(0x1199, 0x6839) }, /* Sierra Wireless MC8781 */ + { USB_DEVICE(0x1199, 0x683A) }, /* Sierra Wireless MC8785 */ + { USB_DEVICE(0x1199, 0x683B) }, /* Sierra Wireless MC8785 Composite */ + /* Sierra Wireless MC8790, MC8791, MC8792 Composite */ + { USB_DEVICE(0x1199, 0x683C) }, + { USB_DEVICE(0x1199, 0x683D) }, /* Sierra Wireless MC8791 Composite */ + /* Sierra Wireless MC8790, MC8791, MC8792 */ + { USB_DEVICE(0x1199, 0x683E) }, + { USB_DEVICE(0x1199, 0x6850) }, /* Sierra Wireless AirCard 880 */ + { USB_DEVICE(0x1199, 0x6851) }, /* Sierra Wireless AirCard 881 */ + { USB_DEVICE(0x1199, 0x6852) }, /* Sierra Wireless AirCard 880 E */ + { USB_DEVICE(0x1199, 0x6853) }, /* Sierra Wireless AirCard 881 E */ + { USB_DEVICE(0x1199, 0x6855) }, /* Sierra Wireless AirCard 880 U */ + { USB_DEVICE(0x1199, 0x6856) }, /* Sierra Wireless AirCard 881 U */ + { USB_DEVICE(0x1199, 0x6859) }, /* Sierra Wireless AirCard 885 E */ + { USB_DEVICE(0x1199, 0x685A) }, /* Sierra Wireless AirCard 885 E */ + /* Sierra Wireless C885 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6880, 0xFF, 0xFF, 0xFF)}, + /* Sierra Wireless C888, Air Card 501, USB 303, USB 304 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6890, 0xFF, 0xFF, 0xFF)}, + /* Sierra Wireless C22/C33 */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6891, 0xFF, 0xFF, 0xFF)}, + /* Sierra Wireless HSPA Non-Composite Device */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x6892, 0xFF, 0xFF, 0xFF)}, + { USB_DEVICE(0x1199, 0x6893) }, /* Sierra Wireless Device */ + /* Sierra Wireless Direct IP modems */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68A3, 0xFF, 0xFF, 0xFF), + .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist + }, + /* AT&T Direct IP modems */ + { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68A3, 0xFF, 0xFF, 0xFF), + .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist + }, + /* Sierra Wireless Direct IP LTE modems */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1199, 0x68AA, 0xFF, 0xFF, 0xFF), + .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist + }, + /* AT&T Direct IP LTE modems */ + { USB_DEVICE_AND_INTERFACE_INFO(0x0F3D, 0x68AA, 0xFF, 0xFF, 0xFF), + .driver_info = (kernel_ulong_t)&direct_ip_interface_blacklist + }, + /* Wireless 5720 VZW Mobile Broadband (EVDO Rev-A) Minicard GPS Port */ + { USB_DEVICE(0x413C, 0x8133) }, + + { } +}; +MODULE_DEVICE_TABLE(usb, id_table); + +/* per port private data */ +struct sierra_port_private { + spinlock_t lock; /* lock the structure */ + int outstanding_urbs; /* number of out urbs in flight */ + + struct usb_anchor active; + struct usb_anchor delayed; + + int num_out_urbs; + int num_in_urbs; + /* Input endpoints and buffers for this port */ + struct urb *in_urbs[N_IN_URB_HM]; + + /* Settings for the port */ + int rts_state; /* Handshaking pins (outputs) */ + int dtr_state; + int cts_state; /* Handshaking pins (inputs) */ + int dsr_state; + int dcd_state; + int ri_state; + unsigned int opened:1; +}; + +static int sierra_send_setup(struct usb_serial_port *port) +{ + struct usb_serial *serial = port->serial; + struct sierra_port_private *portdata = usb_get_serial_port_data(port); + __u16 interface = 0; + int val = 0; + int do_send = 0; + int retval; + + dev_dbg(&port->dev, "%s\n", __func__); + + if (portdata->dtr_state) + val |= 0x01; + if (portdata->rts_state) + val |= 0x02; + + /* If composite device then properly report interface */ + if (serial->num_ports == 1) { + interface = sierra_calc_interface(serial); + /* Control message is sent only to interfaces with + * interrupt_in endpoints + */ + if (port->interrupt_in_urb) { + /* send control message */ + do_send = 1; + } + } + + /* Otherwise the need to do non-composite mapping */ + else { + if (port->bulk_out_endpointAddress == 2) + interface = 0; + else if (port->bulk_out_endpointAddress == 4) + interface = 1; + else if (port->bulk_out_endpointAddress == 5) + interface = 2; + + do_send = 1; + } + if (!do_send) + return 0; + + usb_autopm_get_interface(serial->interface); + retval = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + 0x22, 0x21, val, interface, NULL, 0, USB_CTRL_SET_TIMEOUT); + usb_autopm_put_interface(serial->interface); + + return retval; +} + +static void sierra_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios) +{ + dev_dbg(&port->dev, "%s\n", __func__); + tty_termios_copy_hw(tty->termios, old_termios); + sierra_send_setup(port); +} + +static int sierra_tiocmget(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + unsigned int value; + struct sierra_port_private *portdata; + + dev_dbg(&port->dev, "%s\n", __func__); + portdata = usb_get_serial_port_data(port); + + value = ((portdata->rts_state) ? TIOCM_RTS : 0) | + ((portdata->dtr_state) ? TIOCM_DTR : 0) | + ((portdata->cts_state) ? TIOCM_CTS : 0) | + ((portdata->dsr_state) ? TIOCM_DSR : 0) | + ((portdata->dcd_state) ? TIOCM_CAR : 0) | + ((portdata->ri_state) ? TIOCM_RNG : 0); + + return value; +} + +static int sierra_tiocmset(struct tty_struct *tty, + unsigned int set, unsigned int clear) +{ + struct usb_serial_port *port = tty->driver_data; + struct sierra_port_private *portdata; + + portdata = usb_get_serial_port_data(port); + + if (set & TIOCM_RTS) + portdata->rts_state = 1; + if (set & TIOCM_DTR) + portdata->dtr_state = 1; + + if (clear & TIOCM_RTS) + portdata->rts_state = 0; + if (clear & TIOCM_DTR) + portdata->dtr_state = 0; + return sierra_send_setup(port); +} + +static void sierra_release_urb(struct urb *urb) +{ + struct usb_serial_port *port; + if (urb) { + port = urb->context; + dev_dbg(&port->dev, "%s: %p\n", __func__, urb); + usb_free_urb(urb); + } +} + +/* Sysfs Attributes */ + +static ssize_t show_suspend_status(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct usb_serial_port *port; + struct sierra_port_private *portdata; + struct sierra_intf_private *intfdata; + unsigned long flags; + unsigned int flag_suspended = 0; + + port = to_usb_serial_port(dev); + portdata = usb_get_serial_port_data(port); + intfdata = port->serial->private; + + spin_lock_irqsave(&intfdata->susp_lock, flags); + flag_suspended = intfdata->suspended; + spin_unlock_irqrestore(&intfdata->susp_lock, flags); + + return snprintf(buf, PORTION_LEN, "%i\n", flag_suspended); +} + +static ssize_t show_stats(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct usb_serial_port *port; + struct sierra_intf_private *intfdata; + + port = to_usb_serial_port(dev); + intfdata = port->serial->private; + + return snprintf(buf, PORTION_LEN, + "rx: %i B\tindat: %i\tindat err: %i\n" + "tx: %i B\toutdat: %i\toutdat err: %i\n" + "writes: %i\t\twrite err: %i\n" + "delayed writes: %i\tdelayed write err: %i\n", + atomic_read(&intfdata->stats.rx_bytes), atomic_read(&intfdata->stats.indat_cb_cnt), atomic_read(&intfdata->stats.indat_cb_fail), + atomic_read(&intfdata->stats.tx_bytes), atomic_read(&intfdata->stats.outdat_cb_cnt), atomic_read(&intfdata->stats.outdat_cb_fail), + atomic_read(&intfdata->stats.write_cnt), atomic_read(&intfdata->stats.write_err), + atomic_read(&intfdata->stats.delayed_writes), atomic_read(&intfdata->stats.delayed_write_err) + ); +} + +/* Read only suspend status */ +static DEVICE_ATTR(suspend_status, S_IWUSR | S_IRUGO, show_suspend_status, + NULL); + +/* Read only statistics */ +static DEVICE_ATTR(stats, S_IWUSR | S_IRUGO, show_stats, NULL); + +static int sierra_create_sysfs_attrs(struct usb_serial_port *port) +{ + int result = 0; + + result = device_create_file(&port->dev, &dev_attr_stats); + if (unlikely (result < 0)) + return result; + return device_create_file(&port->dev, &dev_attr_suspend_status); +} + +static int sierra_remove_sysfs_attrs(struct usb_serial_port *port) +{ + device_remove_file(&port->dev, &dev_attr_stats); + device_remove_file(&port->dev, &dev_attr_suspend_status); + return 0; +} + +static void sierra_outdat_callback(struct urb *urb) +{ + struct usb_serial_port *port = urb->context; + struct sierra_port_private *portdata = usb_get_serial_port_data(port); + struct sierra_intf_private *intfdata; + int status = urb->status; + + dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); + intfdata = port->serial->private; + + usb_autopm_put_interface_async(port->serial->interface); + + atomic_inc(&intfdata->stats.outdat_cb_cnt); + + if (status) { + dev_dbg(&port->dev, "%s - nonzero write bulk status " + "received: %d\n", __func__, status); + atomic_inc(&intfdata->stats.outdat_cb_fail); + } + + spin_lock(&portdata->lock); + --portdata->outstanding_urbs; + spin_unlock(&portdata->lock); + + spin_lock(&intfdata->susp_lock); + --intfdata->in_flight; + spin_unlock(&intfdata->susp_lock); + + usb_serial_port_softint(port); +} + +/* Write */ +static int sierra_write(struct tty_struct *tty, + struct usb_serial_port *port, + const unsigned char *buf, int count) +{ + struct sierra_port_private *portdata = usb_get_serial_port_data(port); + struct sierra_intf_private *intfdata; + struct usb_serial *serial = port->serial; + unsigned long flags; + unsigned char *buffer; + struct urb *urb; + size_t writesize = min((size_t)count, (size_t)MAX_TRANSFER); + int retval = 0; + + /* verify that we actually have some data to write */ + if (count == 0) + return 0; + + dev_dbg(&port->dev, "%s: write (%zu bytes)\n", __func__, writesize); + + intfdata = serial->private; + + spin_lock_irqsave(&portdata->lock, flags); + if (portdata->outstanding_urbs > portdata->num_out_urbs) { + spin_unlock_irqrestore(&portdata->lock, flags); + dev_dbg(&port->dev, "%s - write limit hit\n", __func__); + return 0; + } + portdata->outstanding_urbs++; + spin_unlock_irqrestore(&portdata->lock, flags); + + retval = usb_autopm_get_interface_async(serial->interface); + if (unlikely(retval < 0)) { + spin_lock_irqsave(&portdata->lock, flags); + portdata->outstanding_urbs--; + spin_unlock_irqrestore(&portdata->lock, flags); + return retval; + } + + buffer = kmalloc(writesize, GFP_ATOMIC); + if (!buffer) { + dev_err(&port->dev, "out of memory\n"); + spin_lock_irqsave(&portdata->lock, flags); + --portdata->outstanding_urbs; + spin_unlock_irqrestore(&portdata->lock, flags); + usb_autopm_put_interface_async(serial->interface); + return -ENOMEM; + } + + urb = usb_alloc_urb(0, GFP_ATOMIC); + if (!urb) { + dev_err(&port->dev, "no more free urbs\n"); + kfree(buffer); + spin_lock_irqsave(&portdata->lock, flags); + --portdata->outstanding_urbs; + spin_unlock_irqrestore(&portdata->lock, flags); + usb_autopm_put_interface_async(serial->interface); + return -ENOMEM; + } + + memcpy(buffer, buf, writesize); + + usb_serial_debug_data(debug, &port->dev, __func__, writesize, buffer); + + usb_fill_bulk_urb(urb, serial->dev, + usb_sndbulkpipe(serial->dev, + port->bulk_out_endpointAddress), + buffer, writesize, sierra_outdat_callback, port); + + /* Handle the need to send a zero length packet and release the + * transfer buffer + */ + urb->transfer_flags |= (URB_ZERO_PACKET | URB_FREE_BUFFER); + + spin_lock_irqsave(&intfdata->susp_lock, flags); + + if (intfdata->suspended) { + usb_anchor_urb(urb, &portdata->delayed); + spin_unlock_irqrestore(&intfdata->susp_lock, flags); + /* release our reference to this urb, the USB core will + * eventually free it entirely */ + usb_free_urb(urb); + return writesize; + } + usb_anchor_urb(urb, &portdata->active); + + /* send it down the pipe */ + retval = usb_submit_urb(urb, GFP_ATOMIC); + if (retval) { + usb_unanchor_urb(urb); + spin_unlock_irqrestore(&intfdata->susp_lock, flags); + + dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed " + "with status = %d\n", __func__, retval); + usb_free_urb(urb); + spin_lock_irqsave(&portdata->lock, flags); + --portdata->outstanding_urbs; + spin_unlock_irqrestore(&portdata->lock, flags); + usb_autopm_put_interface_async(serial->interface); + atomic_inc(&intfdata->stats.write_err); + return retval; + } else { + intfdata->in_flight++; + spin_unlock_irqrestore(&intfdata->susp_lock, flags); + atomic_inc(&intfdata->stats.write_cnt); + atomic_add(writesize, &intfdata->stats.tx_bytes); + } + /* release our reference to this urb, the USB core will eventually + * free it entirely */ + usb_free_urb(urb); + + return writesize; +} + +static void sierra_indat_callback(struct urb *urb) +{ + int err; + int endpoint; + struct usb_serial_port *port = urb->context; + struct tty_struct *tty; + struct sierra_intf_private *intfdata; + unsigned char *data = urb->transfer_buffer; + int status = urb->status; + + endpoint = usb_pipeendpoint(urb->pipe); + + dev_dbg(&port->dev, "%s: %p\n", __func__, urb); + + intfdata = port->serial->private; + + atomic_inc(&intfdata->stats.indat_cb_cnt); /* indat calls */ + + if (status) { + dev_dbg(&port->dev, "%s: nonzero status: %d on" + " endpoint %02x\n", __func__, status, endpoint); + atomic_inc(&intfdata->stats.indat_cb_fail); /* indat fails */ + } else { + if (urb->actual_length) { + tty = tty_port_tty_get(&port->port); + if (tty) { + tty_insert_flip_string(tty, data, + urb->actual_length); + tty_flip_buffer_push(tty); + + tty_kref_put(tty); + /* tty invalid after this point */ + /* rx'd bytes */ + atomic_add(urb->actual_length, + &intfdata->stats.rx_bytes); + usb_serial_debug_data(debug, &port->dev, + __func__, urb->actual_length, data); + } + } else { + dev_dbg(&port->dev, "%s: empty read urb" + " received\n", __func__); + } + } + + /* Resubmit urb so we continue receiving */ + if (status != -ESHUTDOWN && status != -ENOENT && status != -ENODEV) { + usb_mark_last_busy(port->serial->dev); + err = usb_submit_urb(urb, GFP_ATOMIC); + if (err && err != -ENODEV) + dev_err(&port->dev, "resubmit read urb failed." + "(%d)\n", err); + } + + return; +} + +static void sierra_instat_callback(struct urb *urb) +{ + int err; + int status = urb->status; + struct usb_serial_port *port = urb->context; + struct sierra_port_private *portdata = usb_get_serial_port_data(port); + struct usb_serial *serial = port->serial; + + dev_dbg(&port->dev, "%s: %p\n", __func__, urb); + + if (status == 0) { + struct usb_ctrlrequest *req_pkt = + (struct usb_ctrlrequest *)urb->transfer_buffer; + + const u16 *sigp = (u16 *)(req_pkt + 1); + /* usb_ctrlrequest we parsed is followed by two bytes of data + * make sure we received that many bytes + */ + if (urb->actual_length >= sizeof(*req_pkt) + sizeof(*sigp) && + req_pkt->bRequestType == USB_REQUEST_TYPE_CLASS && + req_pkt->bRequest == USB_REQUEST_IFACE) { + int old_dcd_state; + const u16 signals = get_unaligned_le16(sigp); + struct tty_struct *tty; + + dev_dbg(&port->dev, "%s: signal 0x%x\n", __func__, + signals); + + old_dcd_state = portdata->dcd_state; + /* Note: CTS from modem is in reverse logic! */ + portdata->cts_state = ((signals & 0x100) ? 0 : 1); + portdata->dcd_state = ((signals & 0x01) ? 1 : 0); + portdata->dsr_state = ((signals & 0x02) ? 1 : 0); + portdata->ri_state = ((signals & 0x08) ? 1 : 0); + + tty = tty_port_tty_get(&port->port); + if (tty && !C_CLOCAL(tty) && + old_dcd_state && !portdata->dcd_state) + tty_hangup(tty); + tty_kref_put(tty); + } else { + /* dump the data we don't understand to log */ + usb_serial_debug_data(1, &port->dev, __func__, + urb->actual_length, urb->transfer_buffer); + } + } else + dev_dbg(&port->dev, "%s: error %d\n", __func__, status); + + /* Resubmit urb so we continue receiving IRQ data */ + if (status != -ESHUTDOWN && status != -ENOENT && status != -ENODEV) { + usb_mark_last_busy(serial->dev); + urb->dev = serial->dev; + err = usb_submit_urb(urb, GFP_ATOMIC); + if (err && err != -ENODEV) + dev_err(&port->dev, "%s: resubmit intr urb " + "failed. (%d)\n", __func__, err); + } +} + +static int sierra_write_room(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + struct sierra_port_private *portdata = usb_get_serial_port_data(port); + unsigned long flags; + int retval; + + dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number); + + /* try to give a good number back based on if we have any free urbs at + * this point in time */ + retval = MAX_TRANSFER; + + spin_lock_irqsave(&portdata->lock, flags); + if (portdata->outstanding_urbs >= portdata->num_out_urbs) { + retval = 0; + } + spin_unlock_irqrestore(&portdata->lock, flags); + + return retval; +} + +static void sierra_stop_rx_urbs(struct usb_serial_port *port) +{ + int i; + struct sierra_port_private *portdata = usb_get_serial_port_data(port); + + for (i = 0; i < portdata->num_in_urbs; i++) + usb_kill_urb(portdata->in_urbs[i]); + + usb_kill_urb(port->interrupt_in_urb); +} + +static int sierra_submit_rx_urbs(struct usb_serial_port *port, gfp_t mem_flags) +{ + int ok_cnt; + int err = -EINVAL; + int i; + struct urb *urb; + struct sierra_port_private *portdata = usb_get_serial_port_data(port); + + ok_cnt = 0; + for (i = 0; i < portdata->num_in_urbs; i++) { + urb = portdata->in_urbs[i]; + if (!urb) + continue; + urb->transfer_flags |= URB_FREE_BUFFER; + err = usb_submit_urb(urb, mem_flags); + if (err) { + dev_err(&port->dev, "%s: submit urb failed: %d\n", + __func__, err); + } else { + ok_cnt++; + } + } + + if (ok_cnt && port->interrupt_in_urb) { + err = usb_submit_urb(port->interrupt_in_urb, mem_flags); + if (err) { + dev_err(&port->dev, "%s: submit intr urb failed: %d\n", + __func__, err); + } + } + + if (ok_cnt > 0) /* at least one rx urb submitted */ + return 0; + else + return err; +} + +static struct urb *sierra_setup_urb(struct usb_serial *serial, int endpoint, + int dir, void *ctx, int len, + gfp_t mem_flags, + usb_complete_t callback) +{ + struct urb *urb; + u8 *buf; + + if (endpoint == -1) + return NULL; + + urb = usb_alloc_urb(0, mem_flags); + if (urb == NULL) { + dev_dbg(&serial->dev->dev, "%s: alloc for endpoint %d failed\n", + __func__, endpoint); + return NULL; + } + + buf = kmalloc(len, mem_flags); + if (buf) { + /* Fill URB using supplied data */ + usb_fill_bulk_urb(urb, serial->dev, + usb_sndbulkpipe(serial->dev, endpoint) | dir, + buf, len, callback, ctx); + + /* debug */ + dev_dbg(&serial->dev->dev, "%s %c u : %p d:%p\n", __func__, + dir == USB_DIR_IN ? 'i' : 'o', urb, buf); + } else { + dev_dbg(&serial->dev->dev, "%s %c u:%p d:%p\n", __func__, + dir == USB_DIR_IN ? 'i' : 'o', urb, buf); + + sierra_release_urb(urb); + urb = NULL; + } + + return urb; +} +static void sierra_close(struct usb_serial_port *port) +{ + int i; + struct urb *urb; + struct usb_serial *serial = port->serial; + struct sierra_port_private *portdata; + struct sierra_intf_private *intfdata = port->serial->private; + + dev_dbg(&port->dev, "%s\n", __func__); + portdata = usb_get_serial_port_data(port); + + portdata->rts_state = 0; + portdata->dtr_state = 0; + + usb_autopm_get_interface(serial->interface); + + if (serial->dev) { + mutex_lock(&serial->disc_mutex); + if (!serial->disconnected) + sierra_send_setup(port); + mutex_unlock(&serial->disc_mutex); + spin_lock_irq(&intfdata->susp_lock); + portdata->opened = 0; + spin_unlock_irq(&intfdata->susp_lock); + + /* Stop reading urbs */ + sierra_stop_rx_urbs(port); + /* .. and release them */ + for (i = 0; i < portdata->num_in_urbs; i++) { + sierra_release_urb(portdata->in_urbs[i]); + portdata->in_urbs[i] = NULL; + } + while((urb = usb_get_from_anchor(&portdata->delayed))) { + sierra_release_urb(urb); + usb_autopm_put_interface(serial->interface); + } + /* wait for active to finish */ + usb_wait_anchor_empty_timeout(&portdata->active, 500); + usb_kill_anchored_urbs(&portdata->active); + + } +} + +static int sierra_open(struct tty_struct *tty, struct usb_serial_port *port) +{ + struct sierra_port_private *portdata; + struct usb_serial *serial = port->serial; + struct sierra_intf_private *intfdata = serial->private; + int i; + int err; + int endpoint; + struct urb *urb; + + portdata = usb_get_serial_port_data(port); + + dev_dbg(&port->dev, "%s\n", __func__); + + /* Set some sane defaults */ + portdata->rts_state = 1; + portdata->dtr_state = 1; + + + endpoint = port->bulk_in_endpointAddress; + for (i = 0; i < portdata->num_in_urbs; i++) { + urb = sierra_setup_urb(serial, endpoint, USB_DIR_IN, port, + IN_BUFLEN, GFP_KERNEL, + sierra_indat_callback); + portdata->in_urbs[i] = urb; + } + /* clear halt condition */ + usb_clear_halt(serial->dev, + usb_sndbulkpipe(serial->dev, endpoint) | USB_DIR_IN); + + /* reset outstanding out urbs counter */ + spin_lock_irq(&portdata->lock); + portdata->outstanding_urbs = 0; + spin_unlock_irq(&portdata->lock); + + err = sierra_submit_rx_urbs(port, GFP_KERNEL); + if (err) { + /* do everything as in close() but do not call close() because + * usbserial calls sierra_open() with mutex taken; + * then if we call sierra_close() inside sierra_open() we + * violate 'no nested mutexes' kernel condition + */ + portdata->rts_state = 0; + portdata->dtr_state = 0; + usb_autopm_get_interface(serial->interface); + /* Stop reading urbs */ + sierra_stop_rx_urbs(port); + /* .. and release them */ + for (i = 0; i < portdata->num_in_urbs; i++) { + sierra_release_urb(portdata->in_urbs[i]); + portdata->in_urbs[i] = NULL; + } + while((urb = usb_get_from_anchor(&portdata->delayed))) { + sierra_release_urb(urb); + usb_autopm_put_interface(serial->interface); + } + /* wait for active to finish */ + usb_wait_anchor_empty_timeout(&portdata->active, 500); + usb_kill_anchored_urbs(&portdata->active); + /* restore balance for autopm */ + usb_autopm_put_interface(serial->interface); + return err; + } + sierra_send_setup(port); + + spin_lock_irq(&intfdata->susp_lock); + portdata->opened = 1; + spin_unlock_irq(&intfdata->susp_lock); + usb_autopm_put_interface(serial->interface); + + return 0; +} + +static void sierra_dtr_rts(struct usb_serial_port *port, int on) +{ + struct usb_serial *serial = port->serial; + struct sierra_port_private *portdata; + + portdata = usb_get_serial_port_data(port); + portdata->rts_state = on; + portdata->dtr_state = on; + + if (serial->dev) { + mutex_lock(&serial->disc_mutex); + if (!serial->disconnected) + sierra_send_setup(port); + mutex_unlock(&serial->disc_mutex); + } +} + +static int sierra_startup(struct usb_serial *serial) +{ + struct usb_serial_port *port = NULL; + struct sierra_port_private *portdata = NULL; + struct sierra_iface_info *himemoryp = NULL; + int i; + u8 ifnum; + u16 fw_attr; + int result; + + dev_dbg(&serial->dev->dev, "%s\n", __func__); + + /* Set Device mode to D0 */ + sierra_set_power_state(serial->dev, 0x0000); + + /* Check NMEA and set */ + if (nmea) + sierra_vsc_set_nmea(serial->dev, 1); + + if (serial->num_ports) { + /* Note: One big piece of memory is allocated for all ports + * private data in one shot. This memory is split into equal + * pieces for each port. + */ + portdata = (struct sierra_port_private *)kzalloc + (sizeof(*portdata) * serial->num_ports, GFP_KERNEL); + if (!portdata) { + dev_dbg(&serial->dev->dev, "%s: No memory!\n", __func__); + return -ENOMEM; + } + } + + /* Now setup per port private data */ + for (i = 0; i < serial->num_ports; i++, portdata++) { + port = serial->port[i]; + /* Initialize selected members of private data because these + * may be referred to right away */ + spin_lock_init(&portdata->lock); + init_usb_anchor(&portdata->active); + init_usb_anchor(&portdata->delayed); + + portdata->cts_state = 1; + + ifnum = i; + /* Assume low memory requirements */ + portdata->num_out_urbs = N_OUT_URB; + portdata->num_in_urbs = N_IN_URB; + + /* Determine actual memory requirements */ + if (serial->num_ports == 1) { + /* Get interface number for composite device */ + ifnum = sierra_calc_interface(serial); + himemoryp = + (struct sierra_iface_info *)&typeB_interface_list; + if (is_himemory(ifnum, himemoryp)) { + portdata->num_out_urbs = N_OUT_URB_HM; + portdata->num_in_urbs = N_IN_URB_HM; + } + } + else { + himemoryp = + (struct sierra_iface_info *)&typeA_interface_list; + if (is_himemory(i, himemoryp)) { + portdata->num_out_urbs = N_OUT_URB_HM; + portdata->num_in_urbs = N_IN_URB_HM; + } + } + dev_dbg(&serial->dev->dev, + "Memory usage (urbs) interface #%d, in=%d, out=%d\n", + ifnum,portdata->num_in_urbs, portdata->num_out_urbs ); + /* Set the port private data pointer */ + usb_set_serial_port_data(port, portdata); + } + serial->interface->needs_remote_wakeup = 1; + + result = sierra_get_fw_attr(serial->dev, &fw_attr); + if (result == sizeof(fw_attr) && (fw_attr & SWI_FW_ATTR_PM_MASK) ) { + dev_info(&serial->dev->dev, + "APM supported, enabling autosuspend.\n"); +/******************************************************************************* + * If you want the default /sys/bus/usb/devices/.../.../power/level to be forced + * to auto, the following needs to be compiled in. + */ +#ifdef POWER_LEVEL_AUTO + /* make power level default be 'auto' */ + usb_enable_autosuspend(serial->dev); +#endif + } else { + usb_disable_autosuspend(serial->dev); + } + + return 0; +} + +static void sierra_release(struct usb_serial *serial) +{ + int i; + struct usb_serial_port *port; + struct sierra_intf_private *intfdata = serial->private; + + dev_dbg(&serial->dev->dev, "%s\n", __func__); + + if (serial->num_ports > 0) { + port = serial->port[0]; + if (port) + /* Note: The entire piece of memory that was allocated + * in the startup routine can be released by passing + * a pointer to the beginning of the piece. + * This address corresponds to the address of the chunk + * that was given to port 0. + */ + kfree(usb_get_serial_port_data(port)); + } + + for (i = 0; i < serial->num_ports; ++i) { + port = serial->port[i]; + if (!port) + continue; + usb_set_serial_port_data(port, NULL); + } + kfree(intfdata); +} + +#ifdef CONFIG_PM +static void stop_read_write_urbs(struct usb_serial *serial) +{ + int i; + struct usb_serial_port *port; + struct sierra_port_private *portdata; + + /* Stop reading/writing urbs */ + for (i = 0; i < serial->num_ports; ++i) { + port = serial->port[i]; + portdata = usb_get_serial_port_data(port); + sierra_stop_rx_urbs(port); + usb_kill_anchored_urbs(&portdata->active); + } +} + +static int sierra_suspend(struct usb_serial *serial, pm_message_t message) +{ + struct sierra_intf_private *intfdata; + + dev_dbg(&serial->dev->dev, "%s\n", __func__); + + intfdata = serial->private; + spin_lock_irq(&intfdata->susp_lock); + + if (message.event & PM_EVENT_AUTO) { + if (intfdata->in_flight) { + spin_unlock_irq(&intfdata->susp_lock); + return -EBUSY; + } + } + intfdata->suspended = 1; + spin_unlock_irq(&intfdata->susp_lock); + + stop_read_write_urbs(serial); + + return 0; +} + +static int sierra_resume(struct usb_serial *serial) +{ + struct usb_serial_port *port; + struct sierra_intf_private *intfdata = serial->private; + struct sierra_port_private *portdata; + struct urb *urb; + int ec = 0; + int i, err; + int len; + int failed_submits; + + dev_dbg(&serial->dev->dev, "%s\n", __func__); + + spin_lock_irq(&intfdata->susp_lock); + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + portdata = usb_get_serial_port_data(port); + failed_submits = 0; + while ((urb = usb_get_from_anchor(&portdata->delayed))) { + usb_anchor_urb(urb, &portdata->active); + intfdata->in_flight++; + len = urb->transfer_buffer_length; + err = usb_submit_urb(urb, GFP_ATOMIC); + if (err < 0) { + intfdata->in_flight--; + usb_unanchor_urb(urb); + failed_submits++; + atomic_inc(&intfdata->stats.delayed_write_err); + /* fix pm_usage_cnt */ + usb_autopm_put_interface_async( + port->serial->interface); + } else { + atomic_inc(&intfdata->stats.delayed_writes); + atomic_add(len, &intfdata->stats.tx_bytes); + } + /* release urb - usb_get_from_anchor increased kref */ + usb_free_urb(urb); + } + + if (portdata->opened) { + err = sierra_submit_rx_urbs(port, GFP_ATOMIC); + if (err) + ec++; + } + if (failed_submits) { + /* fix outstanding_urbs counter */ + spin_lock(&portdata->lock); /* assuming irq disabled */ + portdata->outstanding_urbs -= failed_submits; + spin_unlock(&portdata->lock); + /* unblock a writer */ + usb_serial_port_softint(port); + } + } + intfdata->suspended = 0; + spin_unlock_irq(&intfdata->susp_lock); + + return ec ? -EIO : 0; +} +#else +#define sierra_suspend NULL +#define sierra_resume NULL +#endif + +static int sierra_reset_resume(struct usb_interface *intf) +{ + struct usb_serial *serial = usb_get_intfdata(intf); + dev_err(&serial->dev->dev, "%s\n", __func__); + return usb_serial_resume(intf); +} + +static struct usb_driver sierra_driver = { + .name = "sierra", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .suspend = usb_serial_suspend, + .resume = usb_serial_resume, + .reset_resume = sierra_reset_resume, + .id_table = id_table, + + .no_dynamic_id = 1, + .supports_autosuspend = 1, +}; + + +static struct usb_serial_driver sierra_device = { + .driver = { + .owner = THIS_MODULE, + .name = "sierra", + }, + .description = "Sierra USB modem", + .id_table = id_table, + .usb_driver = &sierra_driver, + .calc_num_ports = sierra_calc_num_ports, + .probe = sierra_probe, + .open = sierra_open, + .close = sierra_close, + .dtr_rts = sierra_dtr_rts, + .write = sierra_write, + .write_room = sierra_write_room, + .set_termios = sierra_set_termios, + .tiocmget = sierra_tiocmget, + .tiocmset = sierra_tiocmset, + .attach = sierra_startup, + .release = sierra_release, + .port_probe = sierra_create_sysfs_attrs, + .port_remove = sierra_remove_sysfs_attrs, + .suspend = sierra_suspend, + .resume = sierra_resume, + .read_int_callback = sierra_instat_callback, + +}; + +/* Functions used by new usb-serial code. */ +static int __init sierra_init(void) +{ + int retval; + retval = usb_serial_register(&sierra_device); + if (retval) + goto failed_device_register; + + retval = usb_register(&sierra_driver); + if (retval) + goto failed_driver_register; + + printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" + DRIVER_DESC "\n"); + + return 0; + +failed_driver_register: + usb_serial_deregister(&sierra_device); +failed_device_register: + return retval; +} + +static void __exit sierra_exit(void) +{ + usb_deregister(&sierra_driver); + usb_serial_deregister(&sierra_device); +} + +module_init(sierra_init); +module_exit(sierra_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); +MODULE_LICENSE("GPL"); + +module_param(nmea, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(nmea, "NMEA streaming"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug messages"); |