diff options
Diffstat (limited to 'drivers/usb/serial/cypress_m8.c')
| -rw-r--r-- | drivers/usb/serial/cypress_m8.c | 543 |
1 files changed, 184 insertions, 359 deletions
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 2edf238b00b..01bf5339281 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -16,32 +16,6 @@ * * See http://geocities.com/i0xox0i for information on this driver and the * earthmate usb device. - * - * Lonnie Mendez <dignome@gmail.com> - * 4-29-2005 - * Fixed problem where setting or retreiving the serial config would fail - * with EPIPE. Removed CRTS toggling so the driver behaves more like - * other usbserial adapters. Issued new interval of 1ms instead of the - * default 10ms. As a result, transfer speed has been substantially - * increased from avg. 850bps to avg. 3300bps. initial termios has also - * been modified. Cleaned up code and formatting issues so it is more - * readable. Replaced the C++ style comments. - * - * Lonnie Mendez <dignome@gmail.com> - * 12-15-2004 - * Incorporated write buffering from pl2303 driver. Fixed bug with line - * handling so both lines are raised in cypress_open. (was dropping rts) - * Various code cleanups made as well along with other misc bug fixes. - * - * Lonnie Mendez <dignome@gmail.com> - * 04-10-2004 - * Driver modified to support dynamic line settings. Various improvments - * and features. - * - * Neil Whelchel - * 10-2003 - * Driver first released. - * */ /* Thanks to Neil Whelchel for writing the first cypress m8 implementation @@ -53,7 +27,6 @@ #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> @@ -72,15 +45,10 @@ #include "cypress_m8.h" -static int debug; -static int stats; +static bool stats; static int interval; -static int unstable_bauds; +static bool unstable_bauds; -/* - * Version Information - */ -#define DRIVER_VERSION "v1.10" #define DRIVER_AUTHOR "Lonnie Mendez <dignome@gmail.com>, Neil Whelchel <koyama@firstlight.net>" #define DRIVER_DESC "Cypress USB to Serial Driver" @@ -96,6 +64,7 @@ static const struct usb_device_id id_table_earthmate[] = { static const struct usb_device_id id_table_cyphidcomrs232[] = { { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, { USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) }, + { USB_DEVICE(VENDOR_ID_FRWD, PRODUCT_ID_CYPHIDCOM_FRWD) }, { } /* Terminating entry */ }; @@ -109,20 +78,13 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(VENDOR_ID_DELORME, PRODUCT_ID_EARTHMATEUSB_LT20) }, { USB_DEVICE(VENDOR_ID_CYPRESS, PRODUCT_ID_CYPHIDCOM) }, { USB_DEVICE(VENDOR_ID_POWERCOM, PRODUCT_ID_UPS) }, + { USB_DEVICE(VENDOR_ID_FRWD, PRODUCT_ID_CYPHIDCOM_FRWD) }, { USB_DEVICE(VENDOR_ID_DAZZLE, PRODUCT_ID_CA42) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, id_table_combined); -static struct usb_driver cypress_driver = { - .name = "cypress", - .probe = usb_serial_probe, - .disconnect = usb_serial_disconnect, - .id_table = id_table_combined, - .no_dynamic_id = 1, -}; - enum packet_format { packet_format_1, /* b0:status, b1:payload count */ packet_format_2 /* b0[7:3]:status, b0[2:0]:payload count */ @@ -150,18 +112,17 @@ struct cypress_private { int baud_rate; /* stores current baud rate in integer form */ int isthrottled; /* if throttled, discard reads */ - wait_queue_head_t delta_msr_wait; /* used for TIOCMIWAIT */ - char prev_status, diff_status; /* used for TIOCMIWAIT */ + char prev_status; /* used for TIOCMIWAIT */ /* we pass a pointer to this as the argument sent to cypress_set_termios old_termios */ struct ktermios tmp_termios; /* stores the old termios settings */ }; /* function prototypes for the Cypress USB to serial device */ -static int cypress_earthmate_startup(struct usb_serial *serial); -static int cypress_hidcom_startup(struct usb_serial *serial); -static int cypress_ca42v2_startup(struct usb_serial *serial); -static void cypress_release(struct usb_serial *serial); +static int cypress_earthmate_port_probe(struct usb_serial_port *port); +static int cypress_hidcom_port_probe(struct usb_serial_port *port); +static int cypress_ca42v2_port_probe(struct usb_serial_port *port); +static int cypress_port_remove(struct usb_serial_port *port); static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port); static void cypress_close(struct usb_serial_port *port); static void cypress_dtr_rts(struct usb_serial_port *port, int on); @@ -169,12 +130,10 @@ static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); static void cypress_send(struct usb_serial_port *port); static int cypress_write_room(struct tty_struct *tty); -static int cypress_ioctl(struct tty_struct *tty, struct file *file, - unsigned int cmd, unsigned long arg); static void cypress_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old); -static int cypress_tiocmget(struct tty_struct *tty, struct file *file); -static int cypress_tiocmset(struct tty_struct *tty, struct file *file, +static int cypress_tiocmget(struct tty_struct *tty); +static int cypress_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static int cypress_chars_in_buffer(struct tty_struct *tty); static void cypress_throttle(struct tty_struct *tty); @@ -189,20 +148,19 @@ static struct usb_serial_driver cypress_earthmate_device = { .name = "earthmate", }, .description = "DeLorme Earthmate USB", - .usb_driver = &cypress_driver, .id_table = id_table_earthmate, .num_ports = 1, - .attach = cypress_earthmate_startup, - .release = cypress_release, + .port_probe = cypress_earthmate_port_probe, + .port_remove = cypress_port_remove, .open = cypress_open, .close = cypress_close, .dtr_rts = cypress_dtr_rts, .write = cypress_write, .write_room = cypress_write_room, - .ioctl = cypress_ioctl, .set_termios = cypress_set_termios, .tiocmget = cypress_tiocmget, .tiocmset = cypress_tiocmset, + .tiocmiwait = usb_serial_generic_tiocmiwait, .chars_in_buffer = cypress_chars_in_buffer, .throttle = cypress_throttle, .unthrottle = cypress_unthrottle, @@ -216,20 +174,19 @@ static struct usb_serial_driver cypress_hidcom_device = { .name = "cyphidcom", }, .description = "HID->COM RS232 Adapter", - .usb_driver = &cypress_driver, .id_table = id_table_cyphidcomrs232, .num_ports = 1, - .attach = cypress_hidcom_startup, - .release = cypress_release, + .port_probe = cypress_hidcom_port_probe, + .port_remove = cypress_port_remove, .open = cypress_open, .close = cypress_close, .dtr_rts = cypress_dtr_rts, .write = cypress_write, .write_room = cypress_write_room, - .ioctl = cypress_ioctl, .set_termios = cypress_set_termios, .tiocmget = cypress_tiocmget, .tiocmset = cypress_tiocmset, + .tiocmiwait = usb_serial_generic_tiocmiwait, .chars_in_buffer = cypress_chars_in_buffer, .throttle = cypress_throttle, .unthrottle = cypress_unthrottle, @@ -243,20 +200,19 @@ static struct usb_serial_driver cypress_ca42v2_device = { .name = "nokiaca42v2", }, .description = "Nokia CA-42 V2 Adapter", - .usb_driver = &cypress_driver, .id_table = id_table_nokiaca42v2, .num_ports = 1, - .attach = cypress_ca42v2_startup, - .release = cypress_release, + .port_probe = cypress_ca42v2_port_probe, + .port_remove = cypress_port_remove, .open = cypress_open, .close = cypress_close, .dtr_rts = cypress_dtr_rts, .write = cypress_write, .write_room = cypress_write_room, - .ioctl = cypress_ioctl, .set_termios = cypress_set_termios, .tiocmget = cypress_tiocmget, .tiocmset = cypress_tiocmset, + .tiocmiwait = usb_serial_generic_tiocmiwait, .chars_in_buffer = cypress_chars_in_buffer, .throttle = cypress_throttle, .unthrottle = cypress_unthrottle, @@ -264,10 +220,21 @@ static struct usb_serial_driver cypress_ca42v2_device = { .write_int_callback = cypress_write_int_callback, }; +static struct usb_serial_driver * const serial_drivers[] = { + &cypress_earthmate_device, &cypress_hidcom_device, + &cypress_ca42v2_device, NULL +}; + /***************************************************************************** * Cypress serial helper functions *****************************************************************************/ +/* FRWD Dongle hidcom needs to skip reset and speed checks */ +static inline bool is_frwd(struct usb_device *dev) +{ + return ((le16_to_cpu(dev->descriptor.idVendor) == VENDOR_ID_FRWD) && + (le16_to_cpu(dev->descriptor.idProduct) == PRODUCT_ID_CYPHIDCOM_FRWD)); +} static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) { @@ -277,6 +244,10 @@ static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) if (unstable_bauds) return new_rate; + /* FRWD Dongle uses 115200 bps */ + if (is_frwd(port->serial->dev)) + return new_rate; + /* * The general purpose firmware for the Cypress M8 allows for * a maximum speed of 57600bps (I have no idea whether DeLorme @@ -295,8 +266,9 @@ static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) * safest speed for a part like that. */ if (new_rate > 4800) { - dbg("%s - failed setting baud rate, device incapable " - "speed %d", __func__, new_rate); + dev_dbg(&port->dev, + "%s - failed setting baud rate, device incapable speed %d\n", + __func__, new_rate); return -1; } } @@ -306,8 +278,9 @@ static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) /* 300 and 600 baud rates are supported under * the generic firmware, but are not used with * NMEA and SiRF protocols */ - dbg("%s - failed setting baud rate, unsupported speed " - "of %d on Earthmate GPS", __func__, new_rate); + dev_dbg(&port->dev, + "%s - failed setting baud rate, unsupported speed of %d on Earthmate GPS\n", + __func__, new_rate); return -1; } break; @@ -326,12 +299,11 @@ static int cypress_serial_control(struct tty_struct *tty, { int new_baudrate = 0, retval = 0, tries = 0; struct cypress_private *priv; + struct device *dev = &port->dev; u8 *feature_buffer; const unsigned int feature_len = 5; unsigned long flags; - dbg("%s", __func__); - priv = usb_get_serial_port_data(port); if (!priv->comm_is_ok) @@ -346,16 +318,16 @@ static int cypress_serial_control(struct tty_struct *tty, /* 0 means 'Hang up' so doesn't change the true bit rate */ new_baudrate = priv->baud_rate; if (baud_rate && baud_rate != priv->baud_rate) { - dbg("%s - baud rate is changing", __func__); + dev_dbg(dev, "%s - baud rate is changing\n", __func__); retval = analyze_baud_rate(port, baud_rate); if (retval >= 0) { new_baudrate = retval; - dbg("%s - New baud rate set to %d", - __func__, new_baudrate); + dev_dbg(dev, "%s - New baud rate set to %d\n", + __func__, new_baudrate); } } - dbg("%s - baud rate is being sent as %d", - __func__, new_baudrate); + dev_dbg(dev, "%s - baud rate is being sent as %d\n", __func__, + new_baudrate); /* fill the feature_buffer with new configuration */ put_unaligned_le32(new_baudrate, feature_buffer); @@ -367,9 +339,8 @@ static int cypress_serial_control(struct tty_struct *tty, /* 1 bit gap */ feature_buffer[4] |= (reset << 7); /* assign reset at end of byte, 1 bit space */ - dbg("%s - device is being sent this feature report:", - __func__); - dbg("%s - %02X - %02X - %02X - %02X - %02X", __func__, + dev_dbg(dev, "%s - device is being sent this feature report:\n", __func__); + dev_dbg(dev, "%s - %02X - %02X - %02X - %02X - %02X\n", __func__, feature_buffer[0], feature_buffer[1], feature_buffer[2], feature_buffer[3], feature_buffer[4]); @@ -389,8 +360,8 @@ static int cypress_serial_control(struct tty_struct *tty, retval != -ENODEV); if (retval != feature_len) { - dev_err(&port->dev, "%s - failed sending serial " - "line settings - %d\n", __func__, retval); + dev_err(dev, "%s - failed sending serial line settings - %d\n", + __func__, retval); cypress_set_dead(port); } else { spin_lock_irqsave(&priv->lock, flags); @@ -411,7 +382,7 @@ static int cypress_serial_control(struct tty_struct *tty, retval = -ENOTTY; goto out; } - dbg("%s - retreiving serial line settings", __func__); + dev_dbg(dev, "%s - retreiving serial line settings\n", __func__); do { retval = usb_control_msg(port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0), @@ -426,8 +397,8 @@ static int cypress_serial_control(struct tty_struct *tty, && retval != -ENODEV); if (retval != feature_len) { - dev_err(&port->dev, "%s - failed to retrieve serial " - "line settings - %d\n", __func__, retval); + dev_err(dev, "%s - failed to retrieve serial line settings - %d\n", + __func__, retval); cypress_set_dead(port); goto out; } else { @@ -462,7 +433,7 @@ static void cypress_set_dead(struct usb_serial_port *port) spin_unlock_irqrestore(&priv->lock, flags); dev_err(&port->dev, "cypress_m8 suspending failing port %d - " - "interval might be too short\n", port->number); + "interval might be too short\n", port->port_number); } @@ -471,12 +442,10 @@ static void cypress_set_dead(struct usb_serial_port *port) *****************************************************************************/ -static int generic_startup(struct usb_serial *serial) +static int cypress_generic_port_probe(struct usb_serial_port *port) { + struct usb_serial *serial = port->serial; struct cypress_private *priv; - struct usb_serial_port *port = serial->port[0]; - - dbg("%s - port %d", __func__, port->number); priv = kzalloc(sizeof(struct cypress_private), GFP_KERNEL); if (!priv) @@ -488,9 +457,12 @@ static int generic_startup(struct usb_serial *serial) kfree(priv); return -ENOMEM; } - init_waitqueue_head(&priv->delta_msr_wait); - usb_reset_configuration(serial->dev); + /* Skip reset for FRWD device. It is a workaound: + device hangs if it receives SET_CONFIGURE in Configured + state. */ + if (!is_frwd(serial->dev)) + usb_reset_configuration(serial->dev); priv->cmd_ctrl = 0; priv->line_control = 0; @@ -510,32 +482,33 @@ static int generic_startup(struct usb_serial *serial) if (interval > 0) { priv->write_urb_interval = interval; priv->read_urb_interval = interval; - dbg("%s - port %d read & write intervals forced to %d", - __func__, port->number, interval); + dev_dbg(&port->dev, "%s - read & write intervals forced to %d\n", + __func__, interval); } else { priv->write_urb_interval = port->interrupt_out_urb->interval; priv->read_urb_interval = port->interrupt_in_urb->interval; - dbg("%s - port %d intervals: read=%d write=%d", - __func__, port->number, - priv->read_urb_interval, priv->write_urb_interval); + dev_dbg(&port->dev, "%s - intervals: read=%d write=%d\n", + __func__, priv->read_urb_interval, + priv->write_urb_interval); } usb_set_serial_port_data(port, priv); + port->port.drain_delay = 256; + return 0; } -static int cypress_earthmate_startup(struct usb_serial *serial) +static int cypress_earthmate_port_probe(struct usb_serial_port *port) { + struct usb_serial *serial = port->serial; struct cypress_private *priv; - struct usb_serial_port *port = serial->port[0]; - - dbg("%s", __func__); + int ret; - if (generic_startup(serial)) { - dbg("%s - Failed setting up port %d", __func__, - port->number); - return 1; + ret = cypress_generic_port_probe(port); + if (ret) { + dev_dbg(&port->dev, "%s - Failed setting up port\n", __func__); + return ret; } priv = usb_get_serial_port_data(port); @@ -549,70 +522,61 @@ static int cypress_earthmate_startup(struct usb_serial *serial) handle GET_CONFIG requests; everything they've produced since that time crashes if this command is attempted :-( */ - dbg("%s - Marking this device as unsafe for GET_CONFIG " - "commands", __func__); + dev_dbg(&port->dev, + "%s - Marking this device as unsafe for GET_CONFIG commands\n", + __func__); priv->get_cfg_unsafe = !0; } return 0; -} /* cypress_earthmate_startup */ - +} -static int cypress_hidcom_startup(struct usb_serial *serial) +static int cypress_hidcom_port_probe(struct usb_serial_port *port) { struct cypress_private *priv; + int ret; - dbg("%s", __func__); - - if (generic_startup(serial)) { - dbg("%s - Failed setting up port %d", __func__, - serial->port[0]->number); - return 1; + ret = cypress_generic_port_probe(port); + if (ret) { + dev_dbg(&port->dev, "%s - Failed setting up port\n", __func__); + return ret; } - priv = usb_get_serial_port_data(serial->port[0]); + priv = usb_get_serial_port_data(port); priv->chiptype = CT_CYPHIDCOM; return 0; -} /* cypress_hidcom_startup */ - +} -static int cypress_ca42v2_startup(struct usb_serial *serial) +static int cypress_ca42v2_port_probe(struct usb_serial_port *port) { struct cypress_private *priv; + int ret; - dbg("%s", __func__); - - if (generic_startup(serial)) { - dbg("%s - Failed setting up port %d", __func__, - serial->port[0]->number); - return 1; + ret = cypress_generic_port_probe(port); + if (ret) { + dev_dbg(&port->dev, "%s - Failed setting up port\n", __func__); + return ret; } - priv = usb_get_serial_port_data(serial->port[0]); + priv = usb_get_serial_port_data(port); priv->chiptype = CT_CA42V2; return 0; -} /* cypress_ca42v2_startup */ - +} -static void cypress_release(struct usb_serial *serial) +static int cypress_port_remove(struct usb_serial_port *port) { struct cypress_private *priv; - dbg("%s - port %d", __func__, serial->port[0]->number); - - /* all open ports are closed at this point */ + priv = usb_get_serial_port_data(port); - priv = usb_get_serial_port_data(serial->port[0]); + kfifo_free(&priv->write_fifo); + kfree(priv); - if (priv) { - kfifo_free(&priv->write_fifo); - kfree(priv); - } + return 0; } - static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port) { struct cypress_private *priv = usb_get_serial_port_data(port); @@ -620,8 +584,6 @@ static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port) unsigned long flags; int result = 0; - dbg("%s - port %d", __func__, port->number); - if (!priv->comm_is_ok) return -EIO; @@ -663,7 +625,7 @@ static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port) __func__, result); cypress_set_dead(port); } - port->port.drain_delay = 256; + return result; } /* cypress_open */ @@ -686,26 +648,17 @@ static void cypress_close(struct usb_serial_port *port) struct cypress_private *priv = usb_get_serial_port_data(port); unsigned long flags; - dbg("%s - port %d", __func__, port->number); - - /* writing is potentially harmful, lock must be taken */ - mutex_lock(&port->serial->disc_mutex); - if (port->serial->disconnected) { - mutex_unlock(&port->serial->disc_mutex); - return; - } spin_lock_irqsave(&priv->lock, flags); kfifo_reset_out(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - stopping urbs", __func__); + dev_dbg(&port->dev, "%s - stopping urbs\n", __func__); usb_kill_urb(port->interrupt_in_urb); usb_kill_urb(port->interrupt_out_urb); if (stats) dev_info(&port->dev, "Statistics: %d Bytes In | %d Bytes Out | %d Commands Issued\n", priv->bytes_in, priv->bytes_out, priv->cmd_count); - mutex_unlock(&port->serial->disc_mutex); } /* cypress_close */ @@ -714,7 +667,7 @@ static int cypress_write(struct tty_struct *tty, struct usb_serial_port *port, { struct cypress_private *priv = usb_get_serial_port_data(port); - dbg("%s - port %d, %d bytes", __func__, port->number, count); + dev_dbg(&port->dev, "%s - %d bytes\n", __func__, count); /* line control commands, which need to be executed immediately, are not put into the buffer for obvious reasons. @@ -740,18 +693,18 @@ static void cypress_send(struct usb_serial_port *port) { int count = 0, result, offset, actual_size; struct cypress_private *priv = usb_get_serial_port_data(port); + struct device *dev = &port->dev; unsigned long flags; if (!priv->comm_is_ok) return; - dbg("%s - port %d", __func__, port->number); - dbg("%s - interrupt out size is %d", __func__, - port->interrupt_out_size); + dev_dbg(dev, "%s - interrupt out size is %d\n", __func__, + port->interrupt_out_size); spin_lock_irqsave(&priv->lock, flags); if (priv->write_urb_in_use) { - dbg("%s - can't write, urb in use", __func__); + dev_dbg(dev, "%s - can't write, urb in use\n", __func__); spin_unlock_irqrestore(&priv->lock, flags); return; } @@ -781,7 +734,7 @@ static void cypress_send(struct usb_serial_port *port) if (priv->cmd_ctrl) { priv->cmd_count++; - dbg("%s - line control command being issued", __func__); + dev_dbg(dev, "%s - line control command being issued\n", __func__); spin_unlock_irqrestore(&priv->lock, flags); goto send; } else @@ -803,7 +756,7 @@ static void cypress_send(struct usb_serial_port *port) port->interrupt_out_buffer[0] |= count; } - dbg("%s - count is %d", __func__, count); + dev_dbg(dev, "%s - count is %d\n", __func__, count); send: spin_lock_irqsave(&priv->lock, flags); @@ -816,9 +769,8 @@ send: actual_size = count + (priv->pkt_fmt == packet_format_1 ? 2 : 1); - usb_serial_debug_data(debug, &port->dev, __func__, - port->interrupt_out_size, - port->interrupt_out_urb->transfer_buffer); + usb_serial_debug_data(dev, __func__, port->interrupt_out_size, + port->interrupt_out_urb->transfer_buffer); usb_fill_int_urb(port->interrupt_out_urb, port->serial->dev, usb_sndintpipe(port->serial->dev, port->interrupt_out_endpointAddress), @@ -826,7 +778,7 @@ send: cypress_write_int_callback, port, priv->write_urb_interval); result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC); if (result) { - dev_err(&port->dev, + dev_err_console(port, "%s - failed submitting write urb, error %d\n", __func__, result); priv->write_urb_in_use = 0; @@ -853,18 +805,16 @@ static int cypress_write_room(struct tty_struct *tty) int room = 0; unsigned long flags; - dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); room = kfifo_avail(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - returns %d", __func__, room); + dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); return room; } -static int cypress_tiocmget(struct tty_struct *tty, struct file *file) +static int cypress_tiocmget(struct tty_struct *tty) { struct usb_serial_port *port = tty->driver_data; struct cypress_private *priv = usb_get_serial_port_data(port); @@ -872,8 +822,6 @@ static int cypress_tiocmget(struct tty_struct *tty, struct file *file) unsigned int result = 0; unsigned long flags; - dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); control = priv->line_control; status = priv->current_status; @@ -886,21 +834,19 @@ static int cypress_tiocmget(struct tty_struct *tty, struct file *file) | ((status & UART_RI) ? TIOCM_RI : 0) | ((status & UART_CD) ? TIOCM_CD : 0); - dbg("%s - result = %x", __func__, result); + dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); return result; } -static int cypress_tiocmset(struct tty_struct *tty, struct file *file, +static int cypress_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct usb_serial_port *port = tty->driver_data; struct cypress_private *priv = usb_get_serial_port_data(port); unsigned long flags; - dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); if (set & TIOCM_RTS) priv->line_control |= CONTROL_RTS; @@ -916,102 +862,54 @@ static int cypress_tiocmset(struct tty_struct *tty, struct file *file, return cypress_write(tty, port, NULL, 0); } - -static int cypress_ioctl(struct tty_struct *tty, struct file *file, - unsigned int cmd, unsigned long arg) -{ - struct usb_serial_port *port = tty->driver_data; - struct cypress_private *priv = usb_get_serial_port_data(port); - - dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd); - - switch (cmd) { - /* This code comes from drivers/char/serial.c and ftdi_sio.c */ - case TIOCMIWAIT: - while (priv != NULL) { - interruptible_sleep_on(&priv->delta_msr_wait); - /* see if a signal did it */ - if (signal_pending(current)) - return -ERESTARTSYS; - else { - char diff = priv->diff_status; - if (diff == 0) - return -EIO; /* no change => error */ - - /* consume all events */ - priv->diff_status = 0; - - /* return 0 if caller wanted to know about - these bits */ - if (((arg & TIOCM_RNG) && (diff & UART_RI)) || - ((arg & TIOCM_DSR) && (diff & UART_DSR)) || - ((arg & TIOCM_CD) && (diff & UART_CD)) || - ((arg & TIOCM_CTS) && (diff & UART_CTS))) - return 0; - /* otherwise caller can't care less about what - * happened, and so we continue to wait for - * more events. - */ - } - } - return 0; - default: - break; - } - dbg("%s - arg not supported - it was 0x%04x - check include/asm/ioctls.h", __func__, cmd); - return -ENOIOCTLCMD; -} /* cypress_ioctl */ - - static void cypress_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { struct cypress_private *priv = usb_get_serial_port_data(port); + struct device *dev = &port->dev; int data_bits, stop_bits, parity_type, parity_enable; unsigned cflag, iflag; unsigned long flags; __u8 oldlines; int linechange = 0; - dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); /* We can't clean this one up as we don't know the device type early enough */ if (!priv->termios_initialized) { if (priv->chiptype == CT_EARTHMATE) { - *(tty->termios) = tty_std_termios; - tty->termios->c_cflag = B4800 | CS8 | CREAD | HUPCL | + tty->termios = tty_std_termios; + tty->termios.c_cflag = B4800 | CS8 | CREAD | HUPCL | CLOCAL; - tty->termios->c_ispeed = 4800; - tty->termios->c_ospeed = 4800; + tty->termios.c_ispeed = 4800; + tty->termios.c_ospeed = 4800; } else if (priv->chiptype == CT_CYPHIDCOM) { - *(tty->termios) = tty_std_termios; - tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL | + tty->termios = tty_std_termios; + tty->termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - tty->termios->c_ispeed = 9600; - tty->termios->c_ospeed = 9600; + tty->termios.c_ispeed = 9600; + tty->termios.c_ospeed = 9600; } else if (priv->chiptype == CT_CA42V2) { - *(tty->termios) = tty_std_termios; - tty->termios->c_cflag = B9600 | CS8 | CREAD | HUPCL | + tty->termios = tty_std_termios; + tty->termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL; - tty->termios->c_ispeed = 9600; - tty->termios->c_ospeed = 9600; + tty->termios.c_ispeed = 9600; + tty->termios.c_ospeed = 9600; } priv->termios_initialized = 1; } spin_unlock_irqrestore(&priv->lock, flags); /* Unsupported features need clearing */ - tty->termios->c_cflag &= ~(CMSPAR|CRTSCTS); + tty->termios.c_cflag &= ~(CMSPAR|CRTSCTS); - cflag = tty->termios->c_cflag; - iflag = tty->termios->c_iflag; + cflag = tty->termios.c_cflag; + iflag = tty->termios.c_iflag; /* check if there are new settings */ if (old_termios) { spin_lock_irqsave(&priv->lock, flags); - priv->tmp_termios = *(tty->termios); + priv->tmp_termios = tty->termios; spin_unlock_irqrestore(&priv->lock, flags); } @@ -1042,23 +940,21 @@ static void cypress_set_termios(struct tty_struct *tty, data_bits = 3; break; default: - dev_err(&port->dev, "%s - CSIZE was set, but not CS5-CS8\n", - __func__); + dev_err(dev, "%s - CSIZE was set, but not CS5-CS8\n", __func__); data_bits = 3; } spin_lock_irqsave(&priv->lock, flags); oldlines = priv->line_control; if ((cflag & CBAUD) == B0) { /* drop dtr and rts */ - dbg("%s - dropping the lines, baud rate 0bps", __func__); + dev_dbg(dev, "%s - dropping the lines, baud rate 0bps\n", __func__); priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); } else priv->line_control = (CONTROL_DTR | CONTROL_RTS); spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - sending %d stop_bits, %d parity_enable, %d parity_type, " - "%d data_bits (+5)", __func__, stop_bits, - parity_enable, parity_type, data_bits); + dev_dbg(dev, "%s - sending %d stop_bits, %d parity_enable, %d parity_type, %d data_bits (+5)\n", + __func__, stop_bits, parity_enable, parity_type, data_bits); cypress_serial_control(tty, port, tty_get_baud_rate(tty), data_bits, stop_bits, @@ -1075,11 +971,10 @@ static void cypress_set_termios(struct tty_struct *tty, spin_lock_irqsave(&priv->lock, flags); if (priv->chiptype == CT_EARTHMATE && priv->baud_rate == 4800) { - dbg("Using custom termios settings for a baud rate of " - "4800bps."); + dev_dbg(dev, "Using custom termios settings for a baud rate of 4800bps.\n"); /* define custom termios settings for NMEA protocol */ - tty->termios->c_iflag /* input modes - */ + tty->termios.c_iflag /* input modes - */ &= ~(IGNBRK /* disable ignore break */ | BRKINT /* disable break causes interrupt */ | PARMRK /* disable mark parity errors */ @@ -1089,10 +984,10 @@ static void cypress_set_termios(struct tty_struct *tty, | ICRNL /* disable translate CR to NL */ | IXON); /* disable enable XON/XOFF flow control */ - tty->termios->c_oflag /* output modes */ + tty->termios.c_oflag /* output modes */ &= ~OPOST; /* disable postprocess output char */ - tty->termios->c_lflag /* line discipline modes */ + tty->termios.c_lflag /* line discipline modes */ &= ~(ECHO /* disable echo input characters */ | ECHONL /* disable echo new line */ | ICANON /* disable erase, kill, werase, and rprnt @@ -1121,13 +1016,11 @@ static int cypress_chars_in_buffer(struct tty_struct *tty) int chars = 0; unsigned long flags; - dbg("%s - port %d", __func__, port->number); - spin_lock_irqsave(&priv->lock, flags); chars = kfifo_len(&priv->write_fifo); spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - returns %d", __func__, chars); + dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars); return chars; } @@ -1137,8 +1030,6 @@ static void cypress_throttle(struct tty_struct *tty) struct usb_serial_port *port = tty->driver_data; struct cypress_private *priv = usb_get_serial_port_data(port); - dbg("%s - port %d", __func__, port->number); - spin_lock_irq(&priv->lock); priv->rx_flags = THROTTLED; spin_unlock_irq(&priv->lock); @@ -1151,8 +1042,6 @@ static void cypress_unthrottle(struct tty_struct *tty) struct cypress_private *priv = usb_get_serial_port_data(port); int actually_throttled, result; - dbg("%s - port %d", __func__, port->number); - spin_lock_irq(&priv->lock); actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; priv->rx_flags = 0; @@ -1162,8 +1051,6 @@ static void cypress_unthrottle(struct tty_struct *tty) return; if (actually_throttled) { - port->interrupt_in_urb->dev = port->serial->dev; - result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (result) { dev_err(&port->dev, "%s - failed submitting read urb, " @@ -1178,6 +1065,7 @@ static void cypress_read_int_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct cypress_private *priv = usb_get_serial_port_data(port); + struct device *dev = &urb->dev->dev; struct tty_struct *tty; unsigned char *data = urb->transfer_buffer; unsigned long flags; @@ -1188,8 +1076,6 @@ static void cypress_read_int_callback(struct urb *urb) int i = 0; int status = urb->status; - dbg("%s - port %d", __func__, port->number); - switch (status) { case 0: /* success */ break; @@ -1203,16 +1089,15 @@ static void cypress_read_int_callback(struct urb *urb) /* FALLS THROUGH */ default: /* something ugly is going on... */ - dev_err(&urb->dev->dev, - "%s - unexpected nonzero read status received: %d\n", - __func__, status); + dev_err(dev, "%s - unexpected nonzero read status received: %d\n", + __func__, status); cypress_set_dead(port); return; } spin_lock_irqsave(&priv->lock, flags); if (priv->rx_flags & THROTTLED) { - dbg("%s - now throttling", __func__); + dev_dbg(dev, "%s - now throttling\n", __func__); priv->rx_flags |= ACTUALLY_THROTTLED; spin_unlock_irqrestore(&priv->lock, flags); return; @@ -1221,7 +1106,7 @@ static void cypress_read_int_callback(struct urb *urb) tty = tty_port_tty_get(&port->port); if (!tty) { - dbg("%s - bad tty pointer - exiting", __func__); + dev_dbg(dev, "%s - bad tty pointer - exiting\n", __func__); return; } @@ -1248,29 +1133,41 @@ static void cypress_read_int_callback(struct urb *urb) } spin_unlock_irqrestore(&priv->lock, flags); if (result < bytes) { - dbg("%s - wrong packet size - received %d bytes but packet " - "said %d bytes", __func__, result, bytes); + dev_dbg(dev, + "%s - wrong packet size - received %d bytes but packet said %d bytes\n", + __func__, result, bytes); goto continue_read; } - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); + usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); spin_lock_irqsave(&priv->lock, flags); /* check to see if status has changed */ if (priv->current_status != priv->prev_status) { - priv->diff_status |= priv->current_status ^ - priv->prev_status; - wake_up_interruptible(&priv->delta_msr_wait); + u8 delta = priv->current_status ^ priv->prev_status; + + if (delta & UART_MSR_MASK) { + if (delta & UART_CTS) + port->icount.cts++; + if (delta & UART_DSR) + port->icount.dsr++; + if (delta & UART_RI) + port->icount.rng++; + if (delta & UART_CD) + port->icount.dcd++; + + wake_up_interruptible(&port->port.delta_msr_wait); + } + priv->prev_status = priv->current_status; } spin_unlock_irqrestore(&priv->lock, flags); /* hangup, as defined in acm.c... this might be a bad place for it * though */ - if (tty && !(tty->termios->c_cflag & CLOCAL) && + if (tty && !(tty->termios.c_cflag & CLOCAL) && !(priv->current_status & UART_CD)) { - dbg("%s - calling hangup", __func__); + dev_dbg(dev, "%s - calling hangup\n", __func__); tty_hangup(tty); goto continue_read; } @@ -1283,15 +1180,15 @@ static void cypress_read_int_callback(struct urb *urb) if (priv->current_status & CYP_ERROR) { spin_unlock_irqrestore(&priv->lock, flags); tty_flag = TTY_PARITY; - dbg("%s - Parity Error detected", __func__); + dev_dbg(dev, "%s - Parity Error detected\n", __func__); } else spin_unlock_irqrestore(&priv->lock, flags); /* process read if there is data other than line status */ - if (tty && bytes > i) { - tty_insert_flip_string_fixed_flag(tty, data + i, + if (bytes > i) { + tty_insert_flip_string_fixed_flag(&port->port, data + i, tty_flag, bytes - i); - tty_flip_buffer_push(tty); + tty_flip_buffer_push(&port->port); } spin_lock_irqsave(&priv->lock, flags); @@ -1314,9 +1211,8 @@ continue_read: priv->read_urb_interval); result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); if (result && result != -EPERM) { - dev_err(&urb->dev->dev, "%s - failed resubmitting " - "read urb, error %d\n", __func__, - result); + dev_err(dev, "%s - failed resubmitting read urb, error %d\n", + __func__, result); cypress_set_dead(port); } } @@ -1327,11 +1223,9 @@ static void cypress_write_int_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct cypress_private *priv = usb_get_serial_port_data(port); - int result; + struct device *dev = &urb->dev->dev; int status = urb->status; - dbg("%s - port %d", __func__, port->number); - switch (status) { case 0: /* success */ @@ -1340,31 +1234,16 @@ static void cypress_write_int_callback(struct urb *urb) case -ENOENT: case -ESHUTDOWN: /* this urb is terminated, clean up */ - dbg("%s - urb shutting down with status: %d", - __func__, status); + dev_dbg(dev, "%s - urb shutting down with status: %d\n", + __func__, status); priv->write_urb_in_use = 0; return; - case -EPIPE: /* no break needed; clear halt and resubmit */ - if (!priv->comm_is_ok) - break; - usb_clear_halt(port->serial->dev, 0x02); - /* error in the urb, so we have to resubmit it */ - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - port->interrupt_out_urb->transfer_buffer_length = 1; - port->interrupt_out_urb->dev = port->serial->dev; - result = usb_submit_urb(port->interrupt_out_urb, GFP_ATOMIC); - if (!result) - return; - dev_err(&urb->dev->dev, - "%s - failed resubmitting write urb, error %d\n", - __func__, result); - cypress_set_dead(port); - break; + case -EPIPE: + /* Cannot call usb_clear_halt while in_interrupt */ + /* FALLTHROUGH */ default: - dev_err(&urb->dev->dev, - "%s - unexpected nonzero write status received: %d\n", - __func__, status); + dev_err(dev, "%s - unexpected nonzero write status received: %d\n", + __func__, status); cypress_set_dead(port); break; } @@ -1374,66 +1253,12 @@ static void cypress_write_int_callback(struct urb *urb) cypress_send(port); } - -/***************************************************************************** - * Module functions - *****************************************************************************/ - -static int __init cypress_init(void) -{ - int retval; - - dbg("%s", __func__); - - retval = usb_serial_register(&cypress_earthmate_device); - if (retval) - goto failed_em_register; - retval = usb_serial_register(&cypress_hidcom_device); - if (retval) - goto failed_hidcom_register; - retval = usb_serial_register(&cypress_ca42v2_device); - if (retval) - goto failed_ca42v2_register; - retval = usb_register(&cypress_driver); - if (retval) - goto failed_usb_register; - - printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" - DRIVER_DESC "\n"); - return 0; - -failed_usb_register: - usb_serial_deregister(&cypress_ca42v2_device); -failed_ca42v2_register: - usb_serial_deregister(&cypress_hidcom_device); -failed_hidcom_register: - usb_serial_deregister(&cypress_earthmate_device); -failed_em_register: - return retval; -} - - -static void __exit cypress_exit(void) -{ - dbg("%s", __func__); - - usb_deregister(&cypress_driver); - usb_serial_deregister(&cypress_earthmate_device); - usb_serial_deregister(&cypress_hidcom_device); - usb_serial_deregister(&cypress_ca42v2_device); -} - - -module_init(cypress_init); -module_exit(cypress_exit); +module_usb_serial_driver(serial_drivers, id_table_combined); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_VERSION(DRIVER_VERSION); MODULE_LICENSE("GPL"); -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug enabled or not"); module_param(stats, bool, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(stats, "Enable statistics or not"); module_param(interval, int, S_IRUGO | S_IWUSR); |