diff options
Diffstat (limited to 'drivers/usb/serial/cypress_m8.c')
| -rw-r--r-- | drivers/usb/serial/cypress_m8.c | 579 |
1 files changed, 257 insertions, 322 deletions
diff --git a/drivers/usb/serial/cypress_m8.c b/drivers/usb/serial/cypress_m8.c index 779d07851a4..0230d3c0888 100644 --- a/drivers/usb/serial/cypress_m8.c +++ b/drivers/usb/serial/cypress_m8.c @@ -122,6 +122,11 @@ static struct usb_driver cypress_driver = { .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 */ +}; + struct cypress_private { spinlock_t lock; /* private lock */ int chiptype; /* identifier of device, for quirks/etc */ @@ -139,8 +144,9 @@ struct cypress_private { __u8 current_status; /* received from last read - info on dsr,cts,cd,ri,etc */ __u8 current_config; /* stores the current configuration byte */ __u8 rx_flags; /* throttling - used from whiteheat/ftdi_sio */ + enum packet_format pkt_fmt; /* format to use for packet send / receive */ + int get_cfg_unsafe; /* If true, the CYPRESS_GET_CONFIG is unsafe */ int baud_rate; /* stores current baud rate in integer form */ - int cbr_mask; /* stores current baud rate in masked 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 */ @@ -176,9 +182,6 @@ static void cypress_unthrottle (struct usb_serial_port *port); static void cypress_set_dead (struct usb_serial_port *port); static void cypress_read_int_callback (struct urb *urb); static void cypress_write_int_callback (struct urb *urb); -/* baud helper functions */ -static int mask_to_rate (unsigned mask); -static unsigned rate_to_mask (int rate); /* write buffer functions */ static struct cypress_buf *cypress_buf_alloc(unsigned int size); static void cypress_buf_free(struct cypress_buf *cb); @@ -197,10 +200,6 @@ static struct usb_serial_driver cypress_earthmate_device = { .description = "DeLorme Earthmate USB", .usb_driver = &cypress_driver, .id_table = id_table_earthmate, - .num_interrupt_in = 1, - .num_interrupt_out = 1, - .num_bulk_in = NUM_DONT_CARE, - .num_bulk_out = NUM_DONT_CARE, .num_ports = 1, .attach = cypress_earthmate_startup, .shutdown = cypress_shutdown, @@ -227,10 +226,6 @@ static struct usb_serial_driver cypress_hidcom_device = { .description = "HID->COM RS232 Adapter", .usb_driver = &cypress_driver, .id_table = id_table_cyphidcomrs232, - .num_interrupt_in = 1, - .num_interrupt_out = 1, - .num_bulk_in = NUM_DONT_CARE, - .num_bulk_out = NUM_DONT_CARE, .num_ports = 1, .attach = cypress_hidcom_startup, .shutdown = cypress_shutdown, @@ -257,10 +252,6 @@ static struct usb_serial_driver cypress_ca42v2_device = { .description = "Nokia CA-42 V2 Adapter", .usb_driver = &cypress_driver, .id_table = id_table_nokiaca42v2, - .num_interrupt_in = 1, - .num_interrupt_out = 1, - .num_bulk_in = NUM_DONT_CARE, - .num_bulk_out = NUM_DONT_CARE, .num_ports = 1, .attach = cypress_ca42v2_startup, .shutdown = cypress_shutdown, @@ -284,16 +275,62 @@ static struct usb_serial_driver cypress_ca42v2_device = { *****************************************************************************/ +static int analyze_baud_rate(struct usb_serial_port *port, speed_t new_rate) +{ + struct cypress_private *priv; + priv = usb_get_serial_port_data(port); + + /* + * The general purpose firmware for the Cypress M8 allows for + * a maximum speed of 57600bps (I have no idea whether DeLorme + * chose to use the general purpose firmware or not), if you + * need to modify this speed setting for your own project + * please add your own chiptype and modify the code likewise. + * The Cypress HID->COM device will work successfully up to + * 115200bps (but the actual throughput is around 3kBps). + */ + if (port->serial->dev->speed == USB_SPEED_LOW) { + /* + * Mike Isely <isely@pobox.com> 2-Feb-2008: The + * Cypress app note that describes this mechanism + * states the the low-speed part can't handle more + * than 800 bytes/sec, in which case 4800 baud is the + * safest speed for a part like that. + */ + if (new_rate > 4800) { + dbg("%s - failed setting baud rate, device incapable " + "speed %d", __func__, new_rate); + return -1; + } + } + switch (priv->chiptype) { + case CT_EARTHMATE: + if (new_rate <= 600) { + /* 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); + return -1; + } + break; + default: + break; + } + return new_rate; +} + + /* This function can either set or retrieve the current serial line settings */ -static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_mask, int data_bits, int stop_bits, +static int cypress_serial_control (struct usb_serial_port *port, speed_t baud_rate, int data_bits, int stop_bits, int parity_enable, int parity_type, int reset, int cypress_request_type) { int new_baudrate = 0, retval = 0, tries = 0; struct cypress_private *priv; - __u8 feature_buffer[8]; + __u8 feature_buffer[5]; unsigned long flags; - dbg("%s", __FUNCTION__); + dbg("%s", __func__); priv = usb_get_serial_port_data(port); @@ -302,58 +339,23 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m switch(cypress_request_type) { case CYPRESS_SET_CONFIG: - - /* - * The general purpose firmware for the Cypress M8 allows for a maximum speed - * of 57600bps (I have no idea whether DeLorme chose to use the general purpose - * firmware or not), if you need to modify this speed setting for your own - * project please add your own chiptype and modify the code likewise. The - * Cypress HID->COM device will work successfully up to 115200bps (but the - * actual throughput is around 3kBps). - */ - if (baud_mask != priv->cbr_mask) { - dbg("%s - baud rate is changing", __FUNCTION__); - if ( priv->chiptype == CT_EARTHMATE ) { - /* 300 and 600 baud rates are supported under the generic firmware, - * but are not used with NMEA and SiRF protocols */ - - if ( (baud_mask == B300) || (baud_mask == B600) ) { - err("%s - failed setting baud rate, unsupported speed", - __FUNCTION__); - new_baudrate = priv->baud_rate; - } else if ( (new_baudrate = mask_to_rate(baud_mask)) == -1) { - err("%s - failed setting baud rate, unsupported speed", - __FUNCTION__); - new_baudrate = priv->baud_rate; - } - } else if (priv->chiptype == CT_CYPHIDCOM) { - if ( (new_baudrate = mask_to_rate(baud_mask)) == -1) { - err("%s - failed setting baud rate, unsupported speed", - __FUNCTION__); - new_baudrate = priv->baud_rate; - } - } else if (priv->chiptype == CT_CA42V2) { - if ( (new_baudrate = mask_to_rate(baud_mask)) == -1) { - err("%s - failed setting baud rate, unsupported speed", - __FUNCTION__); - new_baudrate = priv->baud_rate; - } - } else if (priv->chiptype == CT_GENERIC) { - if ( (new_baudrate = mask_to_rate(baud_mask)) == -1) { - err("%s - failed setting baud rate, unsupported speed", - __FUNCTION__); - new_baudrate = priv->baud_rate; - } - } else { - info("%s - please define your chiptype", __FUNCTION__); - new_baudrate = priv->baud_rate; - } - } else { /* baud rate not changing, keep the old */ + new_baudrate = priv->baud_rate; + /* 0 means 'Hang up' so doesn't change the true bit rate */ + if (baud_rate == 0) new_baudrate = priv->baud_rate; + /* Change of speed ? */ + else if (baud_rate != priv->baud_rate) { + dbg("%s - baud rate is changing", __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); + } } - dbg("%s - baud rate is being sent as %d", __FUNCTION__, new_baudrate); + dbg("%s - baud rate is being sent as %d", __func__, new_baudrate); - memset(feature_buffer, 0, 8); + memset(feature_buffer, 0, sizeof(feature_buffer)); /* fill the feature_buffer with new configuration */ *((u_int32_t *)feature_buffer) = new_baudrate; @@ -365,48 +367,65 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m /* 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:", __FUNCTION__); - dbg("%s - %02X - %02X - %02X - %02X - %02X", __FUNCTION__, feature_buffer[0], feature_buffer[1], + dbg("%s - device is being sent this feature report:", __func__); + dbg("%s - %02X - %02X - %02X - %02X - %02X", __func__, feature_buffer[0], feature_buffer[1], feature_buffer[2], feature_buffer[3], feature_buffer[4]); do { - retval = usb_control_msg (port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), - HID_REQ_SET_REPORT, USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_CLASS, - 0x0300, 0, feature_buffer, 8, 500); + retval = usb_control_msg(port->serial->dev, + usb_sndctrlpipe(port->serial->dev, 0), + HID_REQ_SET_REPORT, + USB_DIR_OUT | USB_RECIP_INTERFACE | USB_TYPE_CLASS, + 0x0300, 0, feature_buffer, + sizeof(feature_buffer), 500); if (tries++ >= 3) break; - } while (retval != 8 && retval != -ENODEV); + } while (retval != sizeof(feature_buffer) && + retval != -ENODEV); - if (retval != 8) { - err("%s - failed sending serial line settings - %d", __FUNCTION__, retval); + if (retval != sizeof(feature_buffer)) { + err("%s - failed sending serial line settings - %d", __func__, retval); cypress_set_dead(port); } else { spin_lock_irqsave(&priv->lock, flags); priv->baud_rate = new_baudrate; - priv->cbr_mask = baud_mask; priv->current_config = feature_buffer[4]; spin_unlock_irqrestore(&priv->lock, flags); + /* If we asked for a speed change encode it */ + if (baud_rate) + tty_encode_baud_rate(port->tty, + new_baudrate, new_baudrate); } break; case CYPRESS_GET_CONFIG: - dbg("%s - retreiving serial line settings", __FUNCTION__); + if (priv->get_cfg_unsafe) { + /* Not implemented for this device, + and if we try to do it we're likely + to crash the hardware. */ + return -ENOTTY; + } + dbg("%s - retreiving serial line settings", __func__); /* set initial values in feature buffer */ - memset(feature_buffer, 0, 8); + memset(feature_buffer, 0, sizeof(feature_buffer)); do { - retval = usb_control_msg (port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0), - HID_REQ_GET_REPORT, USB_DIR_IN | USB_RECIP_INTERFACE | USB_TYPE_CLASS, - 0x0300, 0, feature_buffer, 8, 500); - + retval = usb_control_msg(port->serial->dev, + usb_rcvctrlpipe(port->serial->dev, 0), + HID_REQ_GET_REPORT, + USB_DIR_IN | USB_RECIP_INTERFACE | USB_TYPE_CLASS, + 0x0300, 0, feature_buffer, + sizeof(feature_buffer), 500); + if (tries++ >= 3) break; - } while (retval != 5 && retval != -ENODEV); + } while (retval != sizeof(feature_buffer) && + retval != -ENODEV); - if (retval != 5) { - err("%s - failed to retrieve serial line settings - %d", __FUNCTION__, retval); + if (retval != sizeof(feature_buffer)) { + err("%s - failed to retrieve serial line settings - %d", __func__, retval); cypress_set_dead(port); return retval; } else { @@ -415,9 +434,6 @@ static int cypress_serial_control (struct usb_serial_port *port, unsigned baud_m /* store the config in one byte, and later use bit masks to check values */ priv->current_config = feature_buffer[4]; priv->baud_rate = *((u_int32_t *)feature_buffer); - - if ( (priv->cbr_mask = rate_to_mask(priv->baud_rate)) == 0x40) - dbg("%s - failed setting the baud mask (not defined)", __FUNCTION__); spin_unlock_irqrestore(&priv->lock, flags); } } @@ -447,51 +463,6 @@ static void cypress_set_dead(struct usb_serial_port *port) } -/* given a baud mask, it will return integer baud on success */ -static int mask_to_rate (unsigned mask) -{ - int rate; - - switch (mask) { - case B0: rate = 0; break; - case B300: rate = 300; break; - case B600: rate = 600; break; - case B1200: rate = 1200; break; - case B2400: rate = 2400; break; - case B4800: rate = 4800; break; - case B9600: rate = 9600; break; - case B19200: rate = 19200; break; - case B38400: rate = 38400; break; - case B57600: rate = 57600; break; - case B115200: rate = 115200; break; - default: rate = -1; - } - - return rate; -} - - -static unsigned rate_to_mask (int rate) -{ - unsigned mask; - - switch (rate) { - case 0: mask = B0; break; - case 300: mask = B300; break; - case 600: mask = B600; break; - case 1200: mask = B1200; break; - case 2400: mask = B2400; break; - case 4800: mask = B4800; break; - case 9600: mask = B9600; break; - case 19200: mask = B19200; break; - case 38400: mask = B38400; break; - case 57600: mask = B57600; break; - case 115200: mask = B115200; break; - default: mask = 0x40; - } - - return mask; -} /***************************************************************************** * Cypress serial driver functions *****************************************************************************/ @@ -502,7 +473,7 @@ static int generic_startup (struct usb_serial *serial) struct cypress_private *priv; struct usb_serial_port *port = serial->port[0]; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); priv = kzalloc(sizeof (struct cypress_private), GFP_KERNEL); if (!priv) @@ -523,17 +494,27 @@ static int generic_startup (struct usb_serial *serial) priv->line_control = 0; priv->termios_initialized = 0; priv->rx_flags = 0; - priv->cbr_mask = B300; + /* Default packet format setting is determined by packet size. + Anything with a size larger then 9 must have a separate + count field since the 3 bit count field is otherwise too + small. Otherwise we can use the slightly more compact + format. This is in accordance with the cypress_m8 serial + converter app note. */ + if (port->interrupt_out_size > 9) { + priv->pkt_fmt = packet_format_1; + } else { + priv->pkt_fmt = packet_format_2; + } if (interval > 0) { priv->write_urb_interval = interval; priv->read_urb_interval = interval; dbg("%s - port %d read & write intervals forced to %d", - __FUNCTION__,port->number,interval); + __func__,port->number,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", - __FUNCTION__,port->number, + __func__,port->number, priv->read_urb_interval,priv->write_urb_interval); } usb_set_serial_port_data(port, priv); @@ -545,17 +526,30 @@ static int generic_startup (struct usb_serial *serial) static int cypress_earthmate_startup (struct usb_serial *serial) { struct cypress_private *priv; + struct usb_serial_port *port = serial->port[0]; - dbg("%s", __FUNCTION__); + dbg("%s", __func__); if (generic_startup(serial)) { - dbg("%s - Failed setting up port %d", __FUNCTION__, - serial->port[0]->number); + dbg("%s - Failed setting up port %d", __func__, + port->number); return 1; } - priv = usb_get_serial_port_data(serial->port[0]); + priv = usb_get_serial_port_data(port); priv->chiptype = CT_EARTHMATE; + /* All Earthmate devices use the separated-count packet + format! Idiotic. */ + priv->pkt_fmt = packet_format_1; + if (serial->dev->descriptor.idProduct != cpu_to_le16(PRODUCT_ID_EARTHMATEUSB)) { + /* The old original USB Earthmate seemed able to + 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__); + priv->get_cfg_unsafe = !0; + } return 0; } /* cypress_earthmate_startup */ @@ -565,10 +559,10 @@ static int cypress_hidcom_startup (struct usb_serial *serial) { struct cypress_private *priv; - dbg("%s", __FUNCTION__); + dbg("%s", __func__); if (generic_startup(serial)) { - dbg("%s - Failed setting up port %d", __FUNCTION__, + dbg("%s - Failed setting up port %d", __func__, serial->port[0]->number); return 1; } @@ -584,10 +578,10 @@ static int cypress_ca42v2_startup (struct usb_serial *serial) { struct cypress_private *priv; - dbg("%s", __FUNCTION__); + dbg("%s", __func__); if (generic_startup(serial)) { - dbg("%s - Failed setting up port %d", __FUNCTION__, + dbg("%s - Failed setting up port %d", __func__, serial->port[0]->number); return 1; } @@ -603,7 +597,7 @@ static void cypress_shutdown (struct usb_serial *serial) { struct cypress_private *priv; - dbg ("%s - port %d", __FUNCTION__, serial->port[0]->number); + dbg ("%s - port %d", __func__, serial->port[0]->number); /* all open ports are closed at this point */ @@ -624,7 +618,7 @@ static int cypress_open (struct usb_serial_port *port, struct file *filp) unsigned long flags; int result = 0; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); if (!priv->comm_is_ok) return -EIO; @@ -652,16 +646,16 @@ static int cypress_open (struct usb_serial_port *port, struct file *filp) result = cypress_write(port, NULL, 0); if (result) { - dev_err(&port->dev, "%s - failed setting the control lines - error %d\n", __FUNCTION__, result); + dev_err(&port->dev, "%s - failed setting the control lines - error %d\n", __func__, result); return result; } else - dbg("%s - success setting the control lines", __FUNCTION__); + dbg("%s - success setting the control lines", __func__); cypress_set_termios(port, &priv->tmp_termios); /* setup the port and start reading from the device */ if(!port->interrupt_in_urb){ - err("%s - interrupt_in_urb is empty!", __FUNCTION__); + err("%s - interrupt_in_urb is empty!", __func__); return(-1); } @@ -672,7 +666,7 @@ static int cypress_open (struct usb_serial_port *port, struct file *filp) result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); if (result){ - dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __FUNCTION__, result); + dev_err(&port->dev, "%s - failed submitting read urb, error %d\n", __func__, result); cypress_set_dead(port); } @@ -688,7 +682,7 @@ static void cypress_close(struct usb_serial_port *port, struct file * filp) long timeout; wait_queue_t wait; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); /* wait for data to drain from buffer */ spin_lock_irq(&priv->lock); @@ -726,7 +720,7 @@ static void cypress_close(struct usb_serial_port *port, struct file * filp) timeout = 2*HZ; schedule_timeout_interruptible(timeout); - dbg("%s - stopping urbs", __FUNCTION__); + dbg("%s - stopping urbs", __func__); usb_kill_urb (port->interrupt_in_urb); usb_kill_urb (port->interrupt_out_urb); @@ -755,7 +749,7 @@ static int cypress_write(struct usb_serial_port *port, const unsigned char *buf, struct cypress_private *priv = usb_get_serial_port_data(port); unsigned long flags; - dbg("%s - port %d, %d bytes", __FUNCTION__, port->number, count); + dbg("%s - port %d, %d bytes", __func__, port->number, count); /* line control commands, which need to be executed immediately, are not put into the buffer for obvious reasons. @@ -788,12 +782,12 @@ static void cypress_send(struct usb_serial_port *port) if (!priv->comm_is_ok) return; - dbg("%s - port %d", __FUNCTION__, port->number); - dbg("%s - interrupt out size is %d", __FUNCTION__, port->interrupt_out_size); + dbg("%s - port %d", __func__, port->number); + dbg("%s - interrupt out size is %d", __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", __FUNCTION__); + dbg("%s - can't write, urb in use", __func__); spin_unlock_irqrestore(&priv->lock, flags); return; } @@ -803,21 +797,18 @@ static void cypress_send(struct usb_serial_port *port) memset(port->interrupt_out_urb->transfer_buffer, 0, port->interrupt_out_size); spin_lock_irqsave(&priv->lock, flags); - switch (port->interrupt_out_size) { - case 32: - /* this is for the CY7C64013... */ - offset = 2; - port->interrupt_out_buffer[0] = priv->line_control; - break; - case 8: - /* this is for the CY7C63743... */ - offset = 1; - port->interrupt_out_buffer[0] = priv->line_control; - break; - default: - dbg("%s - wrong packet size", __FUNCTION__); - spin_unlock_irqrestore(&priv->lock, flags); - return; + switch (priv->pkt_fmt) { + default: + case packet_format_1: + /* this is for the CY7C64013... */ + offset = 2; + port->interrupt_out_buffer[0] = priv->line_control; + break; + case packet_format_2: + /* this is for the CY7C63743... */ + offset = 1; + port->interrupt_out_buffer[0] = priv->line_control; + break; } if (priv->line_control & CONTROL_RESET) @@ -825,7 +816,7 @@ static void cypress_send(struct usb_serial_port *port) if (priv->cmd_ctrl) { priv->cmd_count++; - dbg("%s - line control command being issued", __FUNCTION__); + dbg("%s - line control command being issued", __func__); spin_unlock_irqrestore(&priv->lock, flags); goto send; } else @@ -838,15 +829,16 @@ static void cypress_send(struct usb_serial_port *port) return; } - switch (port->interrupt_out_size) { - case 32: - port->interrupt_out_buffer[1] = count; - break; - case 8: - port->interrupt_out_buffer[0] |= count; + switch (priv->pkt_fmt) { + default: + case packet_format_1: + port->interrupt_out_buffer[1] = count; + break; + case packet_format_2: + port->interrupt_out_buffer[0] |= count; } - dbg("%s - count is %d", __FUNCTION__, count); + dbg("%s - count is %d", __func__, count); send: spin_lock_irqsave(&priv->lock, flags); @@ -856,9 +848,10 @@ send: if (priv->cmd_ctrl) actual_size = 1; else - actual_size = count + (port->interrupt_out_size == 32 ? 2 : 1); - - usb_serial_debug_data(debug, &port->dev, __FUNCTION__, port->interrupt_out_size, + 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_fill_int_urb(port->interrupt_out_urb, port->serial->dev, @@ -867,7 +860,7 @@ 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, "%s - failed submitting write urb, error %d\n", __FUNCTION__, + dev_err(&port->dev, "%s - failed submitting write urb, error %d\n", __func__, result); priv->write_urb_in_use = 0; cypress_set_dead(port); @@ -891,13 +884,13 @@ static int cypress_write_room(struct usb_serial_port *port) int room = 0; unsigned long flags; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); room = cypress_buf_space_avail(priv->buf); spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - returns %d", __FUNCTION__, room); + dbg("%s - returns %d", __func__, room); return room; } @@ -909,7 +902,7 @@ static int cypress_tiocmget (struct usb_serial_port *port, struct file *file) unsigned int result = 0; unsigned long flags; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); control = priv->line_control; @@ -923,7 +916,7 @@ static int cypress_tiocmget (struct usb_serial_port *port, struct file *file) | ((status & UART_RI) ? TIOCM_RI : 0) | ((status & UART_CD) ? TIOCM_CD : 0); - dbg("%s - result = %x", __FUNCTION__, result); + dbg("%s - result = %x", __func__, result); return result; } @@ -935,7 +928,7 @@ static int cypress_tiocmset (struct usb_serial_port *port, struct file *file, struct cypress_private *priv = usb_get_serial_port_data(port); unsigned long flags; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); if (set & TIOCM_RTS) @@ -946,9 +939,9 @@ static int cypress_tiocmset (struct usb_serial_port *port, struct file *file, priv->line_control &= ~CONTROL_RTS; if (clear & TIOCM_DTR) priv->line_control &= ~CONTROL_DTR; + priv->cmd_ctrl = 1; spin_unlock_irqrestore(&priv->lock, flags); - priv->cmd_ctrl = 1; return cypress_write(port, NULL, 0); } @@ -957,23 +950,9 @@ static int cypress_ioctl (struct usb_serial_port *port, struct file * file, unsi { struct cypress_private *priv = usb_get_serial_port_data(port); - dbg("%s - port %d, cmd 0x%.4x", __FUNCTION__, port->number, cmd); + dbg("%s - port %d, cmd 0x%.4x", __func__, port->number, cmd); switch (cmd) { - case TIOCGSERIAL: - if (copy_to_user((void __user *)arg, port->tty->termios, sizeof(struct ktermios))) { - return -EFAULT; - } - return (0); - break; - case TIOCSSERIAL: - if (copy_from_user(port->tty->termios, (void __user *)arg, sizeof(struct ktermios))) { - return -EFAULT; - } - /* here we need to call cypress_set_termios to invoke the new settings */ - cypress_set_termios(port, &priv->tmp_termios); - return (0); - break; /* This code comes from drivers/char/serial.c and ftdi_sio.c */ case TIOCMIWAIT: while (priv != NULL) { @@ -1009,7 +988,7 @@ static int cypress_ioctl (struct usb_serial_port *port, struct file * file, unsi break; } - dbg("%s - arg not supported - it was 0x%04x - check include/asm/ioctls.h", __FUNCTION__, cmd); + dbg("%s - arg not supported - it was 0x%04x - check include/asm/ioctls.h", __func__, cmd); return -ENOIOCTLCMD; } /* cypress_ioctl */ @@ -1021,18 +1000,14 @@ static void cypress_set_termios (struct usb_serial_port *port, struct cypress_private *priv = usb_get_serial_port_data(port); struct tty_struct *tty; int data_bits, stop_bits, parity_type, parity_enable; - unsigned cflag, iflag, baud_mask; + unsigned cflag, iflag; unsigned long flags; __u8 oldlines; int linechange = 0; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); tty = port->tty; - if ((!tty) || (!tty->termios)) { - dbg("%s - no tty structures", __FUNCTION__); - return; - } spin_lock_irqsave(&priv->lock, flags); if (!priv->termios_initialized) { @@ -1040,40 +1015,37 @@ static void cypress_set_termios (struct usb_serial_port *port, *(tty->termios) = tty_std_termios; tty->termios->c_cflag = B4800 | CS8 | CREAD | HUPCL | CLOCAL; + 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 | CLOCAL; + 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 | CLOCAL; + 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); + cflag = tty->termios->c_cflag; iflag = tty->termios->c_iflag; /* check if there are new settings */ if (old_termios) { - if ((cflag != old_termios->c_cflag) || - (RELEVANT_IFLAG(iflag) != - RELEVANT_IFLAG(old_termios->c_iflag))) { - dbg("%s - attempting to set new termios settings", - __FUNCTION__); - /* should make a copy of this in case something goes - * wrong in the function, we can restore it */ - spin_lock_irqsave(&priv->lock, flags); - priv->tmp_termios = *(tty->termios); - spin_unlock_irqrestore(&priv->lock, flags); - } else { - dbg("%s - nothing to do, exiting", __FUNCTION__); - return; - } - } else - return; + spin_lock_irqsave(&priv->lock, flags); + priv->tmp_termios = *(tty->termios); + spin_unlock_irqrestore(&priv->lock, flags); + } /* set number of data bits, parity, stop bits */ /* when parity is disabled the parity type bit is ignored */ @@ -1104,7 +1076,7 @@ static void cypress_set_termios (struct usb_serial_port *port, break; default: err("%s - CSIZE was set, but not CS5-CS8", - __FUNCTION__); + __func__); data_bits = 3; } } else @@ -1114,54 +1086,17 @@ static void cypress_set_termios (struct usb_serial_port *port, oldlines = priv->line_control; if ((cflag & CBAUD) == B0) { /* drop dtr and rts */ - dbg("%s - dropping the lines, baud rate 0bps", __FUNCTION__); - baud_mask = B0; + dbg("%s - dropping the lines, baud rate 0bps", __func__); priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); - } else { - baud_mask = (cflag & CBAUD); - switch(baud_mask) { - case B300: - dbg("%s - setting baud 300bps", __FUNCTION__); - break; - case B600: - dbg("%s - setting baud 600bps", __FUNCTION__); - break; - case B1200: - dbg("%s - setting baud 1200bps", __FUNCTION__); - break; - case B2400: - dbg("%s - setting baud 2400bps", __FUNCTION__); - break; - case B4800: - dbg("%s - setting baud 4800bps", __FUNCTION__); - break; - case B9600: - dbg("%s - setting baud 9600bps", __FUNCTION__); - break; - case B19200: - dbg("%s - setting baud 19200bps", __FUNCTION__); - break; - case B38400: - dbg("%s - setting baud 38400bps", __FUNCTION__); - break; - case B57600: - dbg("%s - setting baud 57600bps", __FUNCTION__); - break; - case B115200: - dbg("%s - setting baud 115200bps", __FUNCTION__); - break; - default: - dbg("%s - unknown masked baud rate", __FUNCTION__); - } + } 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)", __FUNCTION__, stop_bits, + "%d data_bits (+5)", __func__, stop_bits, parity_enable, parity_type, data_bits); - cypress_serial_control(port, baud_mask, data_bits, stop_bits, + cypress_serial_control(port, tty_get_baud_rate(tty), data_bits, stop_bits, parity_enable, parity_type, 0, CYPRESS_SET_CONFIG); /* we perform a CYPRESS_GET_CONFIG so that the current settings are @@ -1219,13 +1154,13 @@ static int cypress_chars_in_buffer(struct usb_serial_port *port) int chars = 0; unsigned long flags; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); chars = cypress_buf_data_avail(priv->buf); spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - returns %d", __FUNCTION__, chars); + dbg("%s - returns %d", __func__, chars); return chars; } @@ -1235,7 +1170,7 @@ static void cypress_throttle (struct usb_serial_port *port) struct cypress_private *priv = usb_get_serial_port_data(port); unsigned long flags; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); priv->rx_flags = THROTTLED; @@ -1249,7 +1184,7 @@ static void cypress_unthrottle (struct usb_serial_port *port) int actually_throttled, result; unsigned long flags; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); spin_lock_irqsave(&priv->lock, flags); actually_throttled = priv->rx_flags & ACTUALLY_THROTTLED; @@ -1265,7 +1200,7 @@ static void cypress_unthrottle (struct usb_serial_port *port) result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); if (result) { dev_err(&port->dev, "%s - failed submitting read urb, " - "error %d\n", __FUNCTION__, result); + "error %d\n", __func__, result); cypress_set_dead(port); } } @@ -1274,7 +1209,7 @@ static void cypress_unthrottle (struct usb_serial_port *port) static void cypress_read_int_callback(struct urb *urb) { - struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct usb_serial_port *port = urb->context; struct cypress_private *priv = usb_get_serial_port_data(port); struct tty_struct *tty; unsigned char *data = urb->transfer_buffer; @@ -1286,7 +1221,7 @@ static void cypress_read_int_callback(struct urb *urb) int i = 0; int status = urb->status; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); switch (status) { case 0: /* success */ @@ -1302,14 +1237,14 @@ static void cypress_read_int_callback(struct urb *urb) default: /* something ugly is going on... */ dev_err(&urb->dev->dev,"%s - unexpected nonzero read status received: %d\n", - __FUNCTION__, status); + __func__, status); cypress_set_dead(port); return; } spin_lock_irqsave(&priv->lock, flags); if (priv->rx_flags & THROTTLED) { - dbg("%s - now throttling", __FUNCTION__); + dbg("%s - now throttling", __func__); priv->rx_flags |= ACTUALLY_THROTTLED; spin_unlock_irqrestore(&priv->lock, flags); return; @@ -1318,48 +1253,48 @@ static void cypress_read_int_callback(struct urb *urb) tty = port->tty; if (!tty) { - dbg("%s - bad tty pointer - exiting", __FUNCTION__); + dbg("%s - bad tty pointer - exiting", __func__); return; } spin_lock_irqsave(&priv->lock, flags); - switch(urb->actual_length) { - case 32: - /* This is for the CY7C64013... */ - priv->current_status = data[0] & 0xF8; - bytes = data[1] + 2; - i = 2; - if (bytes > 2) - havedata = 1; - break; - case 8: - /* This is for the CY7C63743... */ - priv->current_status = data[0] & 0xF8; - bytes = (data[0] & 0x07) + 1; - i = 1; - if (bytes > 1) - havedata = 1; - break; - default: - dbg("%s - wrong packet size - received %d bytes", - __FUNCTION__, urb->actual_length); - spin_unlock_irqrestore(&priv->lock, flags); - goto continue_read; + result = urb->actual_length; + switch (priv->pkt_fmt) { + default: + case packet_format_1: + /* This is for the CY7C64013... */ + priv->current_status = data[0] & 0xF8; + bytes = data[1] + 2; + i = 2; + if (bytes > 2) + havedata = 1; + break; + case packet_format_2: + /* This is for the CY7C63743... */ + priv->current_status = data[0] & 0xF8; + bytes = (data[0] & 0x07) + 1; + i = 1; + if (bytes > 1) + havedata = 1; + break; } 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); + goto continue_read; + } - usb_serial_debug_data (debug, &port->dev, __FUNCTION__, + usb_serial_debug_data (debug, &port->dev, __func__, urb->actual_length, data); spin_lock_irqsave(&priv->lock, flags); /* check to see if status has changed */ - if (priv != NULL) { - if (priv->current_status != priv->prev_status) { - priv->diff_status |= priv->current_status ^ - priv->prev_status; - wake_up_interruptible(&priv->delta_msr_wait); - priv->prev_status = priv->current_status; - } + if (priv->current_status != priv->prev_status) { + priv->diff_status |= priv->current_status ^ + priv->prev_status; + wake_up_interruptible(&priv->delta_msr_wait); + priv->prev_status = priv->current_status; } spin_unlock_irqrestore(&priv->lock, flags); @@ -1367,7 +1302,7 @@ static void cypress_read_int_callback(struct urb *urb) * though */ if (tty && !(tty->termios->c_cflag & CLOCAL) && !(priv->current_status & UART_CD)) { - dbg("%s - calling hangup", __FUNCTION__); + dbg("%s - calling hangup", __func__); tty_hangup(tty); goto continue_read; } @@ -1380,7 +1315,7 @@ 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", __FUNCTION__); + dbg("%s - Parity Error detected", __func__); } else spin_unlock_irqrestore(&priv->lock, flags); @@ -1414,7 +1349,7 @@ continue_read: result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); if (result) { dev_err(&urb->dev->dev, "%s - failed resubmitting " - "read urb, error %d\n", __FUNCTION__, + "read urb, error %d\n", __func__, result); cypress_set_dead(port); } @@ -1426,12 +1361,12 @@ continue_read: static void cypress_write_int_callback(struct urb *urb) { - struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct usb_serial_port *port = urb->context; struct cypress_private *priv = usb_get_serial_port_data(port); int result; int status = urb->status; - dbg("%s - port %d", __FUNCTION__, port->number); + dbg("%s - port %d", __func__, port->number); switch (status) { case 0: @@ -1442,7 +1377,7 @@ static void cypress_write_int_callback(struct urb *urb) case -ESHUTDOWN: /* this urb is terminated, clean up */ dbg("%s - urb shutting down with status: %d", - __FUNCTION__, status); + __func__, status); priv->write_urb_in_use = 0; return; case -EPIPE: /* no break needed; clear halt and resubmit */ @@ -1451,19 +1386,19 @@ static void cypress_write_int_callback(struct urb *urb) 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", - __FUNCTION__, status); + __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", - __FUNCTION__, result); + __func__, result); cypress_set_dead(port); break; default: dev_err(&urb->dev->dev,"%s - unexpected nonzero write status received: %d\n", - __FUNCTION__, status); + __func__, status); cypress_set_dead(port); break; } @@ -1668,7 +1603,7 @@ static int __init cypress_init(void) { int retval; - dbg("%s", __FUNCTION__); + dbg("%s", __func__); retval = usb_serial_register(&cypress_earthmate_device); if (retval) @@ -1699,7 +1634,7 @@ failed_em_register: static void __exit cypress_exit (void) { - dbg("%s", __FUNCTION__); + dbg("%s", __func__); usb_deregister (&cypress_driver); usb_serial_deregister (&cypress_earthmate_device); |