diff options
Diffstat (limited to 'drivers/usb/serial/ftdi_sio.c')
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 448 |
1 files changed, 201 insertions, 247 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index ba68835d06a..8a3813be1b2 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -1,7 +1,7 @@ /* * USB FTDI SIO driver * - * Copyright (C) 2009 - 2010 + * Copyright (C) 2009 - 2013 * Johan Hovold (jhovold@gmail.com) * Copyright (C) 1999 - 2001 * Greg Kroah-Hartman (greg@kroah.com) @@ -33,7 +33,6 @@ #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> @@ -51,11 +50,8 @@ #define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>, Andreas Mohr, Johan Hovold <jhovold@gmail.com>" #define DRIVER_DESC "USB FTDI Serial Converters Driver" -static __u16 vendor = FTDI_VID; -static __u16 product; struct ftdi_private { - struct kref kref; enum ftdi_chip_type chip_type; /* type of device, either SIO or FT8U232AM */ int baud_base; /* baud base clock for divisor setting */ @@ -68,10 +64,7 @@ struct ftdi_private { */ int flags; /* some ASYNC_xxxx flags are supported */ unsigned long last_dtr_rts; /* saved modem control outputs */ - struct async_icount icount; - wait_queue_head_t delta_msr_wait; /* Used for TIOCMIWAIT */ char prev_status; /* Used for TIOCMIWAIT */ - bool dev_gone; /* Used to abort TIOCMIWAIT */ char transmit_empty; /* If transmitter is empty or not */ __u16 interface; /* FT2232C, FT2232H or FT4232H port interface (0 for FT232/245) */ @@ -148,10 +141,10 @@ static struct ftdi_sio_quirk ftdi_8u2232c_quirk = { /* - * Device ID not listed? Test via module params product/vendor or - * /sys/bus/usb/ftdi_sio/new_id, then send patch/report! + * Device ID not listed? Test it using + * /sys/bus/usb-serial/drivers/ftdi_sio/new_id and send a patch or report. */ -static struct usb_device_id id_table_combined [] = { +static const struct usb_device_id id_table_combined[] = { { USB_DEVICE(FTDI_VID, FTDI_ZEITCONTROL_TAGTRACE_MIFARE_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CTI_MINI_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CTI_NANO_PID) }, @@ -159,6 +152,7 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_CANUSB_PID) }, { USB_DEVICE(FTDI_VID, FTDI_CANDAPTER_PID) }, { USB_DEVICE(FTDI_VID, FTDI_NXTCAM_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_EV3CON_PID) }, { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_0_PID) }, { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_1_PID) }, { USB_DEVICE(FTDI_VID, FTDI_SCS_DEVICE_2_PID) }, @@ -191,10 +185,15 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_THROTTLE_PID) }, { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_GATEWAY_PID) }, { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_GBM_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_OPENDCC_GBM_BOOST_PID) }, { USB_DEVICE(NEWPORT_VID, NEWPORT_AGILIS_PID) }, + { USB_DEVICE(NEWPORT_VID, NEWPORT_CONEX_CC_PID) }, + { USB_DEVICE(NEWPORT_VID, NEWPORT_CONEX_AGP_PID) }, { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) }, { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) }, { USB_DEVICE(FTDI_VID, FTDI_SPROG_II) }, + { USB_DEVICE(FTDI_VID, FTDI_TAGSYS_LP101_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_TAGSYS_P200X_PID) }, { USB_DEVICE(FTDI_VID, FTDI_LENZ_LIUSB_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_632_PID) }, { USB_DEVICE(FTDI_VID, FTDI_XF_634_PID) }, @@ -581,9 +580,12 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_TAVIR_STK500_PID) }, { USB_DEVICE(FTDI_VID, FTDI_TIAO_UMPA_PID), .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, + { USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLXM_PID), + .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, /* * ELV devices: */ + { USB_DEVICE(FTDI_ELV_VID, FTDI_ELV_WS300_PID) }, { USB_DEVICE(FTDI_VID, FTDI_ELV_USR_PID) }, { USB_DEVICE(FTDI_VID, FTDI_ELV_MSM1_PID) }, { USB_DEVICE(FTDI_VID, FTDI_ELV_KL100_PID) }, @@ -641,6 +643,7 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) }, { USB_DEVICE(ACTON_VID, ACTON_SPECTRAPRO_PID) }, { USB_DEVICE(CONTEC_VID, CONTEC_COM1USBH_PID) }, + { USB_DEVICE(MITSUBISHI_VID, MITSUBISHI_FXUSB_PID) }, { USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) }, { USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) }, { USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) }, @@ -670,6 +673,7 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_5_PID) }, { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_6_PID) }, { USB_DEVICE(FTDI_VID, XSENS_CONVERTER_7_PID) }, + { USB_DEVICE(FTDI_VID, FTDI_OMNI1509) }, { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) }, { USB_DEVICE(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID) }, { USB_DEVICE(FTDI_VID, FTDI_MHAM_KW_PID) }, @@ -716,7 +720,8 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_ACG_HFDUAL_PID) }, { USB_DEVICE(FTDI_VID, FTDI_YEI_SERVOCENTER31_PID) }, { USB_DEVICE(FTDI_VID, FTDI_THORLABS_PID) }, - { USB_DEVICE(TESTO_VID, TESTO_USB_INTERFACE_PID) }, + { USB_DEVICE(TESTO_VID, TESTO_1_PID) }, + { USB_DEVICE(TESTO_VID, TESTO_3_PID) }, { USB_DEVICE(FTDI_VID, FTDI_GAMMA_SCOUT_PID) }, { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13M_PID) }, { USB_DEVICE(FTDI_VID, FTDI_TACTRIX_OPENPORT_13S_PID) }, @@ -733,9 +738,34 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_NDI_AURORA_SCU_PID), .driver_info = (kernel_ulong_t)&ftdi_NDI_device_quirk }, { USB_DEVICE(TELLDUS_VID, TELLDUS_TELLSTICK_PID) }, - { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_SERIAL_VX7_PID) }, - { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_CT29B_PID) }, - { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_RTS01_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S03_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_59_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_57A_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_57B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29A_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29F_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_62B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S01_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_63_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_29C_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_81B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_82B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_K5D_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_K4Y_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_K5G_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_S05_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_60_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_61_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_62_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_63B_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_64_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_65_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_92_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_92D_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_W5R_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_A5R_PID) }, + { USB_DEVICE(RTSYSTEMS_VID, RTSYSTEMS_USB_PW1_PID) }, { USB_DEVICE(FTDI_VID, FTDI_MAXSTREAM_PID) }, { USB_DEVICE(FTDI_VID, FTDI_PHI_FISCO_PID) }, { USB_DEVICE(TML_VID, TML_USB_SERIAL_PID) }, @@ -869,7 +899,9 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_DOTEC_PID) }, { USB_DEVICE(QIHARDWARE_VID, MILKYMISTONE_JTAGSERIAL_PID), .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, - { USB_DEVICE(ST_VID, ST_STMCLT1030_PID), + { USB_DEVICE(ST_VID, ST_STMCLT_2232_PID), + .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, + { USB_DEVICE(ST_VID, ST_STMCLT_4232_PID), .driver_info = (kernel_ulong_t)&ftdi_stmclite_quirk }, { USB_DEVICE(FTDI_VID, FTDI_RF_R106) }, { USB_DEVICE(FTDI_VID, FTDI_DISTORTEC_JTAG_LOCK_PICK_PID), @@ -877,7 +909,44 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_LUMEL_PD12_PID) }, /* Crucible Devices */ { USB_DEVICE(FTDI_VID, FTDI_CT_COMET_PID) }, - { }, /* Optional parameter entry */ + { USB_DEVICE(FTDI_VID, FTDI_Z3X_PID) }, + /* Cressi Devices */ + { USB_DEVICE(FTDI_VID, FTDI_CRESSI_PID) }, + /* Brainboxes Devices */ + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_VX_001_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_VX_012_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_VX_023_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_VX_034_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_101_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_1_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_2_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_3_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_4_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_5_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_6_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_7_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_160_8_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_257_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_279_1_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_279_2_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_279_3_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_279_4_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_313_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_324_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_346_1_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_346_2_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_357_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_606_1_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_606_2_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_606_3_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_701_1_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_701_2_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_1_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_2_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_3_PID) }, + { USB_DEVICE(BRAINBOXES_VID, BRAINBOXES_US_842_4_PID) }, + /* Infineon Devices */ + { USB_DEVICE_INTERFACE_NUMBER(INFINEON_VID, INFINEON_TRIBOARD_PID, 1) }, { } /* Terminating entry */ }; @@ -901,16 +970,12 @@ static const char *ftdi_chip_name[] = { #define FTDI_STATUS_B1_MASK (FTDI_RS_BI) /* End TIOCMIWAIT */ -#define FTDI_IMPL_ASYNC_FLAGS = (ASYNC_SPD_HI | ASYNC_SPD_VHI \ - | ASYNC_SPD_CUST | ASYNC_SPD_SHI | ASYNC_SPD_WARP) - /* function prototypes for a FTDI serial converter */ static int ftdi_sio_probe(struct usb_serial *serial, const struct usb_device_id *id); static int ftdi_sio_port_probe(struct usb_serial_port *port); static int ftdi_sio_port_remove(struct usb_serial_port *port); static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port); -static void ftdi_close(struct usb_serial_port *port); static void ftdi_dtr_rts(struct usb_serial_port *port, int on); static void ftdi_process_read_urb(struct urb *urb); static int ftdi_prepare_write_buffer(struct usb_serial_port *port, @@ -920,13 +985,11 @@ static void ftdi_set_termios(struct tty_struct *tty, static int ftdi_tiocmget(struct tty_struct *tty); static int ftdi_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); -static int ftdi_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount); static int ftdi_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg); static void ftdi_break_ctl(struct tty_struct *tty, int break_state); -static int ftdi_chars_in_buffer(struct tty_struct *tty); -static int ftdi_get_modem_status(struct tty_struct *tty, +static bool ftdi_tx_empty(struct usb_serial_port *port); +static int ftdi_get_modem_status(struct usb_serial_port *port, unsigned char status[2]); static unsigned short int ftdi_232am_baud_base_to_divisor(int baud, int base); @@ -950,7 +1013,6 @@ static struct usb_serial_driver ftdi_sio_device = { .port_probe = ftdi_sio_port_probe, .port_remove = ftdi_sio_port_remove, .open = ftdi_open, - .close = ftdi_close, .dtr_rts = ftdi_dtr_rts, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, @@ -958,11 +1020,12 @@ static struct usb_serial_driver ftdi_sio_device = { .prepare_write_buffer = ftdi_prepare_write_buffer, .tiocmget = ftdi_tiocmget, .tiocmset = ftdi_tiocmset, - .get_icount = ftdi_get_icount, + .tiocmiwait = usb_serial_generic_tiocmiwait, + .get_icount = usb_serial_generic_get_icount, .ioctl = ftdi_ioctl, .set_termios = ftdi_set_termios, .break_ctl = ftdi_break_ctl, - .chars_in_buffer = ftdi_chars_in_buffer, + .tx_empty = ftdi_tx_empty, }; static struct usb_serial_driver * const serial_drivers[] = { @@ -973,10 +1036,6 @@ static struct usb_serial_driver * const serial_drivers[] = { #define WDR_TIMEOUT 5000 /* default urb timeout */ #define WDR_SHORT_TIMEOUT 1000 /* shorter urb timeout */ -/* High and low are for DTR, RTS etc etc */ -#define HIGH 1 -#define LOW 0 - /* * *************************************************************************** * Utility functions @@ -1510,14 +1569,17 @@ static void ftdi_set_max_packet_size(struct usb_serial_port *port) struct usb_device *udev = serial->dev; struct usb_interface *interface = serial->interface; - struct usb_endpoint_descriptor *ep_desc = &interface->cur_altsetting->endpoint[1].desc; + struct usb_endpoint_descriptor *ep_desc; unsigned num_endpoints; - int i; + unsigned i; num_endpoints = interface->cur_altsetting->desc.bNumEndpoints; dev_info(&udev->dev, "Number of endpoints %d\n", num_endpoints); + if (!num_endpoints) + return; + /* NOTE: some customers have programmed FT232R/FT245R devices * with an endpoint size of 0 - not good. In this case, we * want to override the endpoint descriptor setting and use a @@ -1545,8 +1607,8 @@ static void ftdi_set_max_packet_size(struct usb_serial_port *port) * *************************************************************************** */ -static ssize_t show_latency_timer(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t latency_timer_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct usb_serial_port *port = to_usb_serial_port(dev); struct ftdi_private *priv = usb_get_serial_port_data(port); @@ -1556,11 +1618,10 @@ static ssize_t show_latency_timer(struct device *dev, return sprintf(buf, "%i\n", priv->latency); } - /* Write a new value of the latency timer, in units of milliseconds. */ -static ssize_t store_latency_timer(struct device *dev, - struct device_attribute *attr, const char *valbuf, - size_t count) +static ssize_t latency_timer_store(struct device *dev, + struct device_attribute *attr, + const char *valbuf, size_t count) { struct usb_serial_port *port = to_usb_serial_port(dev); struct ftdi_private *priv = usb_get_serial_port_data(port); @@ -1573,6 +1634,7 @@ static ssize_t store_latency_timer(struct device *dev, return -EIO; return count; } +static DEVICE_ATTR_RW(latency_timer); /* Write an event character directly to the FTDI register. The ASCII value is in the low 8 bits, with the enable bit in the 9th bit. */ @@ -1600,9 +1662,6 @@ static ssize_t store_event_char(struct device *dev, return count; } - -static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, - store_latency_timer); static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char); static int create_sysfs_attrs(struct usb_serial_port *port) @@ -1681,18 +1740,12 @@ static int ftdi_sio_port_probe(struct usb_serial_port *port) priv = kzalloc(sizeof(struct ftdi_private), GFP_KERNEL); - if (!priv) { - dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", __func__, - sizeof(struct ftdi_private)); + if (!priv) return -ENOMEM; - } - kref_init(&priv->kref); mutex_init(&priv->cfg_lock); - init_waitqueue_head(&priv->delta_msr_wait); priv->flags = ASYNC_LOW_LATENCY; - priv->dev_gone = false; if (quirk && quirk->port_probe) quirk->port_probe(priv); @@ -1793,20 +1846,24 @@ static int ftdi_8u2232c_probe(struct usb_serial *serial) } /* - * First and second port on STMCLiteadaptors is reserved for JTAG interface - * and the forth port for pio + * First two ports on JTAG adaptors using an FT4232 such as STMicroelectronics's + * ST Micro Connect Lite are reserved for JTAG or other non-UART interfaces and + * can be accessed from userspace. + * The next two ports are enabled as UARTs by default, where port 2 is + * a conventional RS-232 UART. */ static int ftdi_stmclite_probe(struct usb_serial *serial) { struct usb_device *udev = serial->dev; struct usb_interface *interface = serial->interface; - if (interface == udev->actconfig->interface[2]) - return 0; - - dev_info(&udev->dev, "Ignoring serial port reserved for JTAG\n"); + if (interface == udev->actconfig->interface[0] || + interface == udev->actconfig->interface[1]) { + dev_info(&udev->dev, "Ignoring serial port reserved for JTAG\n"); + return -ENODEV; + } - return -ENODEV; + return 0; } /* @@ -1827,33 +1884,21 @@ static int ftdi_mtxorb_hack_setup(struct usb_serial *serial) return 0; } -static void ftdi_sio_priv_release(struct kref *k) -{ - struct ftdi_private *priv = container_of(k, struct ftdi_private, kref); - - kfree(priv); -} - static int ftdi_sio_port_remove(struct usb_serial_port *port) { struct ftdi_private *priv = usb_get_serial_port_data(port); - priv->dev_gone = true; - wake_up_interruptible_all(&priv->delta_msr_wait); - remove_sysfs_attrs(port); - kref_put(&priv->kref, ftdi_sio_priv_release); + kfree(priv); return 0; } static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port) { - struct ktermios dummy; struct usb_device *dev = port->serial->dev; struct ftdi_private *priv = usb_get_serial_port_data(port); - int result; /* No error checking for this (will get errors later anyway) */ /* See ftdi_sio.h for description of what is reset */ @@ -1867,54 +1912,32 @@ static int ftdi_open(struct tty_struct *tty, struct usb_serial_port *port) This is same behaviour as serial.c/rs_open() - Kuba */ /* ftdi_set_termios will send usb control messages */ - if (tty) { - memset(&dummy, 0, sizeof(dummy)); - ftdi_set_termios(tty, port, &dummy); - } - - /* Start reading from the device */ - result = usb_serial_generic_open(tty, port); - if (!result) - kref_get(&priv->kref); + if (tty) + ftdi_set_termios(tty, port, NULL); - return result; + return usb_serial_generic_open(tty, port); } static void ftdi_dtr_rts(struct usb_serial_port *port, int on) { struct ftdi_private *priv = usb_get_serial_port_data(port); - mutex_lock(&port->serial->disc_mutex); - if (!port->serial->disconnected) { - /* Disable flow control */ - if (!on && usb_control_msg(port->serial->dev, + /* Disable flow control */ + if (!on) { + if (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, 0, priv->interface, NULL, 0, WDR_TIMEOUT) < 0) { - dev_err(&port->dev, "error from flowcontrol urb\n"); + dev_err(&port->dev, "error from flowcontrol urb\n"); } - /* drop RTS and DTR */ - if (on) - set_mctrl(port, TIOCM_DTR | TIOCM_RTS); - else - clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); } - mutex_unlock(&port->serial->disc_mutex); -} - -/* - * usbserial:__serial_close only calls ftdi_close if the point is open - * - * This only gets called when it is the last close - */ -static void ftdi_close(struct usb_serial_port *port) -{ - struct ftdi_private *priv = usb_get_serial_port_data(port); - - usb_serial_generic_close(port); - kref_put(&priv->kref, ftdi_sio_priv_release); + /* drop RTS and DTR */ + if (on) + set_mctrl(port, TIOCM_DTR | TIOCM_RTS); + else + clear_mctrl(port, TIOCM_DTR | TIOCM_RTS); } /* The SIO requires the first byte to have: @@ -1944,7 +1967,7 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, c = kfifo_out(&port->write_fifo, &buffer[i + 1], len); if (!c) break; - priv->icount.tx += c; + port->icount.tx += c; buffer[i] = (c << 2) + 1; count += c + 1; } @@ -1952,7 +1975,7 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, } else { count = kfifo_out_locked(&port->write_fifo, dest, size, &port->lock); - priv->icount.tx += count; + port->icount.tx += count; } return count; @@ -1960,9 +1983,8 @@ static int ftdi_prepare_write_buffer(struct usb_serial_port *port, #define FTDI_RS_ERR_MASK (FTDI_RS_BI | FTDI_RS_PE | FTDI_RS_FE | FTDI_RS_OE) -static int ftdi_process_packet(struct tty_struct *tty, - struct usb_serial_port *port, struct ftdi_private *priv, - char *packet, int len) +static int ftdi_process_packet(struct usb_serial_port *port, + struct ftdi_private *priv, char *packet, int len) { int i; char status; @@ -1982,15 +2004,23 @@ static int ftdi_process_packet(struct tty_struct *tty, char diff_status = status ^ priv->prev_status; if (diff_status & FTDI_RS0_CTS) - priv->icount.cts++; + port->icount.cts++; if (diff_status & FTDI_RS0_DSR) - priv->icount.dsr++; + port->icount.dsr++; if (diff_status & FTDI_RS0_RI) - priv->icount.rng++; - if (diff_status & FTDI_RS0_RLSD) - priv->icount.dcd++; + port->icount.rng++; + if (diff_status & FTDI_RS0_RLSD) { + struct tty_struct *tty; + + port->icount.dcd++; + tty = tty_port_tty_get(&port->port); + if (tty) + usb_serial_handle_dcd_change(port, tty, + status & FTDI_RS0_RLSD); + tty_kref_put(tty); + } - wake_up_interruptible_all(&priv->delta_msr_wait); + wake_up_interruptible(&port->port.delta_msr_wait); priv->prev_status = status; } @@ -2000,19 +2030,19 @@ static int ftdi_process_packet(struct tty_struct *tty, * over framing errors */ if (packet[1] & FTDI_RS_BI) { flag = TTY_BREAK; - priv->icount.brk++; + port->icount.brk++; usb_serial_handle_break(port); } else if (packet[1] & FTDI_RS_PE) { flag = TTY_PARITY; - priv->icount.parity++; + port->icount.parity++; } else if (packet[1] & FTDI_RS_FE) { flag = TTY_FRAME; - priv->icount.frame++; + port->icount.frame++; } /* Overrun is special, not associated with a char */ if (packet[1] & FTDI_RS_OE) { - priv->icount.overrun++; - tty_insert_flip_char(tty, 0, TTY_OVERRUN); + port->icount.overrun++; + tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); } } @@ -2025,16 +2055,16 @@ static int ftdi_process_packet(struct tty_struct *tty, len -= 2; if (!len) return 0; /* status only */ - priv->icount.rx += len; + port->icount.rx += len; ch = packet + 2; if (port->port.console && port->sysrq) { for (i = 0; i < len; i++, ch++) { if (!usb_serial_handle_sysrq_char(port, *ch)) - tty_insert_flip_char(tty, *ch, flag); + tty_insert_flip_char(&port->port, *ch, flag); } } else { - tty_insert_flip_string_fixed_flag(tty, ch, flag, len); + tty_insert_flip_string_fixed_flag(&port->port, ch, flag, len); } return len; @@ -2043,25 +2073,19 @@ static int ftdi_process_packet(struct tty_struct *tty, static void ftdi_process_read_urb(struct urb *urb) { struct usb_serial_port *port = urb->context; - struct tty_struct *tty; struct ftdi_private *priv = usb_get_serial_port_data(port); char *data = (char *)urb->transfer_buffer; int i; int len; int count = 0; - tty = tty_port_tty_get(&port->port); - if (!tty) - return; - for (i = 0; i < urb->actual_length; i += priv->max_packet_size) { len = min_t(int, urb->actual_length - i, priv->max_packet_size); - count += ftdi_process_packet(tty, port, priv, &data[i], len); + count += ftdi_process_packet(port, priv, &data[i], len); } if (count) - tty_flip_buffer_push(tty); - tty_kref_put(tty); + tty_flip_buffer_push(&port->port); } static void ftdi_break_ctl(struct tty_struct *tty, int break_state) @@ -2094,27 +2118,18 @@ static void ftdi_break_ctl(struct tty_struct *tty, int break_state) } -static int ftdi_chars_in_buffer(struct tty_struct *tty) +static bool ftdi_tx_empty(struct usb_serial_port *port) { - struct usb_serial_port *port = tty->driver_data; - int chars; unsigned char buf[2]; int ret; - chars = usb_serial_generic_chars_in_buffer(tty); - if (chars) - goto out; - - /* Check if hardware buffer is empty. */ - ret = ftdi_get_modem_status(tty, buf); + ret = ftdi_get_modem_status(port, buf); if (ret == 2) { if (!(buf[1] & FTDI_RS_TEMT)) - chars = 1; + return false; } -out: - dev_dbg(&port->dev, "%s - %d\n", __func__, chars); - return chars; + return true; } /* old_termios contains the original termios settings and tty->termios contains @@ -2150,6 +2165,30 @@ static void ftdi_set_termios(struct tty_struct *tty, termios->c_cflag |= CRTSCTS; } + /* + * All FTDI UART chips are limited to CS7/8. We shouldn't pretend to + * support CS5/6 and revert the CSIZE setting instead. + * + * CS5 however is used to control some smartcard readers which abuse + * this limitation to switch modes. Original FTDI chips fall back to + * eight data bits. + * + * TODO: Implement a quirk to only allow this with mentioned + * readers. One I know of (Argolis Smartreader V1) + * returns "USB smartcard server" as iInterface string. + * The vendor didn't bother with a custom VID/PID of + * course. + */ + if (C_CSIZE(tty) == CS6) { + dev_warn(ddev, "requested CSIZE setting not supported\n"); + + termios->c_cflag &= ~CSIZE; + if (old_termios) + termios->c_cflag |= old_termios->c_cflag & CSIZE; + else + termios->c_cflag |= CS8; + } + cflag = termios->c_cflag; if (!old_termios) @@ -2186,19 +2225,19 @@ no_skip: } else { urb_value |= FTDI_SIO_SET_DATA_PARITY_NONE; } - if (cflag & CSIZE) { - switch (cflag & CSIZE) { - case CS7: - urb_value |= 7; - dev_dbg(ddev, "Setting CS7\n"); - break; - case CS8: - urb_value |= 8; - dev_dbg(ddev, "Setting CS8\n"); - break; - default: - dev_err(ddev, "CSIZE was set but not CS7-CS8\n"); - } + switch (cflag & CSIZE) { + case CS5: + dev_dbg(ddev, "Setting CS5 quirk\n"); + break; + case CS7: + urb_value |= 7; + dev_dbg(ddev, "Setting CS7\n"); + break; + default: + case CS8: + urb_value |= 8; + dev_dbg(ddev, "Setting CS8\n"); + break; } /* This is needed by the break command since it uses the same command @@ -2235,7 +2274,7 @@ no_data_parity_stop_changes: dev_err(ddev, "%s urb failed to set baudrate\n", __func__); mutex_unlock(&priv->cfg_lock); /* Ensure RTS and DTR are raised when baudrate changed from 0 */ - if (!old_termios || (old_termios->c_cflag & CBAUD) == B0) + if (old_termios && (old_termios->c_cflag & CBAUD) == B0) set_mctrl(port, TIOCM_DTR | TIOCM_RTS); } @@ -2306,10 +2345,9 @@ no_c_cflag_changes: * Returns the number of status bytes retrieved (device dependant), or * negative error code. */ -static int ftdi_get_modem_status(struct tty_struct *tty, +static int ftdi_get_modem_status(struct usb_serial_port *port, unsigned char status[2]) { - struct usb_serial_port *port = tty->driver_data; struct ftdi_private *priv = usb_get_serial_port_data(port); unsigned char *buf; int len; @@ -2374,7 +2412,7 @@ static int ftdi_tiocmget(struct tty_struct *tty) unsigned char buf[2]; int ret; - ret = ftdi_get_modem_status(tty, buf); + ret = ftdi_get_modem_status(port, buf); if (ret < 0) return ret; @@ -2395,36 +2433,10 @@ static int ftdi_tiocmset(struct tty_struct *tty, return update_mctrl(port, set, clear); } -static int ftdi_get_icount(struct tty_struct *tty, - struct serial_icounter_struct *icount) -{ - struct usb_serial_port *port = tty->driver_data; - struct ftdi_private *priv = usb_get_serial_port_data(port); - struct async_icount *ic = &priv->icount; - - icount->cts = ic->cts; - icount->dsr = ic->dsr; - icount->rng = ic->rng; - icount->dcd = ic->dcd; - icount->tx = ic->tx; - icount->rx = ic->rx; - icount->frame = ic->frame; - icount->parity = ic->parity; - icount->overrun = ic->overrun; - icount->brk = ic->brk; - icount->buf_overrun = ic->buf_overrun; - return 0; -} - static int ftdi_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct usb_serial_port *port = tty->driver_data; - struct ftdi_private *priv = usb_get_serial_port_data(port); - struct async_icount cnow; - struct async_icount cprev; - - dev_dbg(&port->dev, "%s cmd 0x%04x\n", __func__, cmd); /* Based on code from acm.c and others */ switch (cmd) { @@ -2436,79 +2448,21 @@ static int ftdi_ioctl(struct tty_struct *tty, case TIOCSSERIAL: /* sets serial port data */ return set_serial_info(tty, port, (struct serial_struct __user *) arg); - - /* - * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change - * - mask passed in arg for lines of interest - * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking) - * Caller should use TIOCGICOUNT to see which one it was. - * - * This code is borrowed from linux/drivers/char/serial.c - */ - case TIOCMIWAIT: - cprev = priv->icount; - while (!priv->dev_gone) { - interruptible_sleep_on(&priv->delta_msr_wait); - /* see if a signal did it */ - if (signal_pending(current)) - return -ERESTARTSYS; - cnow = priv->icount; - if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) || - ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) || - ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) || - ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) { - return 0; - } - cprev = cnow; - } - return -EIO; - break; case TIOCSERGETLSR: return get_lsr_info(port, (struct serial_struct __user *)arg); break; default: break; } - /* This is not necessarily an error - turns out the higher layers - * will do some ioctls themselves (see comment above) - */ - dev_dbg(&port->dev, "%s arg not supported - it was 0x%04x - check /usr/include/asm/ioctls.h\n", - __func__, cmd); - return -ENOIOCTLCMD; -} - -static int __init ftdi_init(void) -{ - if (vendor > 0 && product > 0) { - /* Add user specified VID/PID to reserved element of table. */ - int i; - for (i = 0; id_table_combined[i].idVendor; i++) - ; - id_table_combined[i].match_flags = USB_DEVICE_ID_MATCH_DEVICE; - id_table_combined[i].idVendor = vendor; - id_table_combined[i].idProduct = product; - } - return usb_serial_register_drivers(serial_drivers, KBUILD_MODNAME, id_table_combined); -} -static void __exit ftdi_exit(void) -{ - usb_serial_deregister_drivers(serial_drivers); + return -ENOIOCTLCMD; } - -module_init(ftdi_init); -module_exit(ftdi_exit); +module_usb_serial_driver(serial_drivers, id_table_combined); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); -module_param(vendor, ushort, 0); -MODULE_PARM_DESC(vendor, "User specified vendor ID (default=" - __MODULE_STRING(FTDI_VID)")"); -module_param(product, ushort, 0); -MODULE_PARM_DESC(product, "User specified product ID"); - module_param(ndi_latency_timer, int, S_IRUGO | S_IWUSR); MODULE_PARM_DESC(ndi_latency_timer, "NDI device latency timer override"); |