diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index f77b35ec288666e27250d350383574d7a14c44ab..549ae79199e2df20dfc012fc0001aa5b6a854ee8 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -121,6 +121,8 @@ source "drivers/staging/octeon/Kconfig" source "drivers/staging/serqt_usb2/Kconfig" +source "drivers/staging/quatech_usb2/Kconfig" + source "drivers/staging/vt6655/Kconfig" source "drivers/staging/vt6656/Kconfig" diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index b21503569e92acb6a87b64003ff3f635da1c6330..cb14ff2b257cb05fe61a7a0c169fda2d7b66de81 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -41,6 +41,7 @@ obj-$(CONFIG_PLAN9AUTH) += p9auth/ obj-$(CONFIG_HECI) += heci/ obj-$(CONFIG_LINE6_USB) += line6/ obj-$(CONFIG_USB_SERIAL_QUATECH2) += serqt_usb2/ +obj-$(CONFIG_USB_SERIAL_QUATECH_USB2) += quatech_usb2/ obj-$(CONFIG_OCTEON_ETHERNET) += octeon/ obj-$(CONFIG_VT6655) += vt6655/ obj-$(CONFIG_VT6656) += vt6656/ diff --git a/drivers/staging/quatech_usb2/Kconfig b/drivers/staging/quatech_usb2/Kconfig new file mode 100644 index 0000000000000000000000000000000000000000..1494f42f3da0d61fe71533178303eb07787075a2 --- /dev/null +++ b/drivers/staging/quatech_usb2/Kconfig @@ -0,0 +1,15 @@ +config USB_SERIAL_QUATECH_USB2 + tristate "USB Quatech xSU2-[14]00 USB Serial Driver" + depends on USB_SERIAL + help + Say Y here if you want to use a Quatech USB2.0 to serial adaptor. This + driver supports the SSU2-100, DSU2-100, DSU2-400, QSU2-100, QSU2-400, + ESU2-400 and ESU2-100 USB2.0 to RS232 / 485 / 422 serial adaptors. + + Some hardware has an incorrect product string and announces itself as + ESU-100 (which uses the serqt driver) even though it is an ESU2-100. + Check the label on the bottom of your device. + + To compile this driver as a module, choose M here: the module will be + called quatech_usb2 . + diff --git a/drivers/staging/quatech_usb2/Makefile b/drivers/staging/quatech_usb2/Makefile new file mode 100644 index 0000000000000000000000000000000000000000..bcd1f890d16387b0ee072ea26b4738f1fd399493 --- /dev/null +++ b/drivers/staging/quatech_usb2/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_USB_SERIAL_QUATECH_USB2) += quatech_usb2.o diff --git a/drivers/staging/quatech_usb2/quatech_usb2.c b/drivers/staging/quatech_usb2/quatech_usb2.c new file mode 100644 index 0000000000000000000000000000000000000000..3544e7005404e0fa420a5de3dc2b90245f26e066 --- /dev/null +++ b/drivers/staging/quatech_usb2/quatech_usb2.c @@ -0,0 +1,611 @@ +/* + * Driver for Quatech Inc USB2.0 to serial adaptors. Largely unrelated to the + * serqt_usb driver, based on a re-write of the vendor supplied serqt_usb2 code, + * which is unrelated to the serqt_usb2 in the staging kernel + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static int debug; + +/* Version Information */ +#define DRIVER_VERSION "v2.00" +#define DRIVER_AUTHOR "Tim Gobeli, Quatech, Inc" +#define DRIVER_DESC "Quatech USB 2.0 to Serial Driver" + +/* vendor and device IDs */ +#define USB_VENDOR_ID_QUATECH 0x061d /* Quatech VID */ +#define QUATECH_SSU2_100 0xC120 /* RS232 single port */ +#define QUATECH_DSU2_100 0xC140 /* RS232 dual port */ +#define QUATECH_DSU2_400 0xC150 /* RS232/422/485 dual port */ +#define QUATECH_QSU2_100 0xC160 /* RS232 four port */ +#define QUATECH_QSU2_400 0xC170 /* RS232/422/485 four port */ +#define QUATECH_ESU2_100 0xC1A0 /* RS232 eight port */ +#define QUATECH_ESU2_400 0xC180 /* RS232/422/485 eight port */ + +/* magic numbers go here, when we find out which ones are needed */ + +#define QU2BOXPWRON 0x8000 /* magic number to turn FPGA power on */ +#define QU2BOX232 0x40 /* RS232 mode on MEI devices */ +#define QU2BOXSPD9600 0x60 /* set speed to 9600 baud */ +/* directions for USB transfers */ +#define USBD_TRANSFER_DIRECTION_IN 0xc0 +#define USBD_TRANSFER_DIRECTION_OUT 0x40 +/* special Quatech command IDs */ +#define QT_SET_GET_DEVICE 0xc2 +#define QT_OPEN_CLOSE_CHANNEL 0xca +/*#define QT_GET_SET_PREBUF_TRIG_LVL 0xcc +#define QT_SET_ATF 0xcd +#define QT_GET_SET_REGISTER 0xc0*/ +#define QT_GET_SET_UART 0xc1 +/*#define QT_HW_FLOW_CONTROL_MASK 0xc5 +#define QT_SW_FLOW_CONTROL_MASK 0xc6 +#define QT_SW_FLOW_CONTROL_DISABLE 0xc7 +#define QT_BREAK_CONTROL 0xc8 +#define QT_STOP_RECEIVE 0xe0 +#define QT_FLUSH_DEVICE 0xc4*/ +#define QT_GET_SET_QMCR 0xe1 +/* port setting constants */ +#define SERIAL_MCR_DTR 0x01 +#define SERIAL_MCR_RTS 0x02 +#define SERIAL_MCR_LOOP 0x10 + +#define SERIAL_MSR_CTS 0x10 +#define SERIAL_MSR_CD 0x80 +#define SERIAL_MSR_RI 0x40 +#define SERIAL_MSR_DSR 0x20 +#define SERIAL_MSR_MASK 0xf0 + +#define SERIAL_8_DATA 0x03 +#define SERIAL_7_DATA 0x02 +#define SERIAL_6_DATA 0x01 +#define SERIAL_5_DATA 0x00 + +#define SERIAL_ODD_PARITY 0X08 +#define SERIAL_EVEN_PARITY 0X18 +#define SERIAL_TWO_STOPB 0x04 +#define SERIAL_ONE_STOPB 0x00 + +#define MAX_BAUD_RATE 921600 +#define MAX_BAUD_REMAINDER 4608 + +#define SERIAL_LSR_OE 0x02 +#define SERIAL_LSR_PE 0x04 +#define SERIAL_LSR_FE 0x08 +#define SERIAL_LSR_BI 0x10 + + +static struct usb_device_id quausb2_id_table[] = { + {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_SSU2_100)}, + {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_DSU2_100)}, + {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_DSU2_400)}, + {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_QSU2_100)}, + {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_QSU2_400)}, + {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU2_100)}, + {USB_DEVICE(USB_VENDOR_ID_QUATECH, QUATECH_ESU2_400)}, + {} /* Terminating entry */ +}; + +MODULE_DEVICE_TABLE(usb, quausb2_id_table); + +/* custom structures we need go here */ + + +static struct usb_driver quausb2_usb_driver = { + .name = "quatech-usb2-serial", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = quausb2_id_table, + .no_dynamic_id = 1, +}; + +/* structure in which to keep all the messy stuff that this driver needs + * alongside the usb_serial_port structure */ +struct quatech2_port { + int magic; + char active; /* someone has this device open */ + unsigned char *xfer_to_tty_buffer; + wait_queue_head_t wait; + int open_count; /* number of times this port has been opened */ + struct semaphore sem; /* locks this structure */ + __u8 shadowLCR; /* last LCR value received */ + __u8 shadowMCR; /* last MCR value received */ + __u8 shadowMSR; /* last MSR value received */ + __u8 shadowLSR; /* last LSR value received */ + char open_ports; /* ports open on whole device */ + char RxHolding; + char Rcv_Flush; + char Xmit_Flush; + char closePending; + char fifo_empty_flag; + int xmit_pending_bytes; + int xmit_fifo_room_bytes; + struct semaphore pend_xmit_sem; /* locks this structure */ + spinlock_t lock; +}; + +/* structure which holds line and modem status flags */ +struct qt2_status_data { + __u8 line_status; + __u8 modem_status; +}; + +/* Function prototypes */ +static int qt2_boxpoweron(struct usb_serial *serial); +static int qt2_boxsetQMCR(struct usb_serial *serial, __u16 Uart_Number, + __u8 QMCR_Value); +static int port_paranoia_check(struct usb_serial_port *port, + const char *function); +static int serial_paranoia_check(struct usb_serial *serial, + const char *function); +static inline struct quatech2_port *qt2_get_port_private(struct usb_serial_port + *port); +static inline void qt2_set_port_private(struct usb_serial_port *port, + struct quatech2_port *data); +static int qt2_openboxchannel(struct usb_serial *serial, __u16 + Uart_Number, struct qt2_status_data *pDeviceData); +static int qt2_closeboxchannel(struct usb_serial *serial, __u16 + Uart_Number); +static int qt2_conf_uart(struct usb_serial *serial, unsigned short Uart_Number, + unsigned short divisor, unsigned char LCR); +/* implementation functions, roughly in order of use, are here */ +static int qt2_calc_num_ports(struct usb_serial *serial) +{ + int num_ports; + int flag_as_400; + switch (serial->dev->descriptor.idProduct) { + case QUATECH_SSU2_100: + num_ports = 1; + break; + + case QUATECH_DSU2_400: + flag_as_400 = true; + case QUATECH_DSU2_100: + num_ports = 2; + break; + + case QUATECH_QSU2_400: + flag_as_400 = true; + case QUATECH_QSU2_100: + num_ports = 4; + break; + + case QUATECH_ESU2_400: + flag_as_400 = true; + case QUATECH_ESU2_100: + num_ports = 8; + break; + default: + num_ports = 1; + break; + } + return num_ports; +} + +static int qt2_attach(struct usb_serial *serial) +{ + struct usb_serial_port *port; + struct quatech2_port *qt2_port; + int i; + /* stuff for printing endpoint addresses, not needed for + * production */ + struct usb_endpoint_descriptor *endpoint; + struct usb_host_interface *iface_desc; + + /* check how many endpoints there are on the device, for + * sanity's sake */ + dbg("%s(): Endpoints: %d bulk in, %d bulk out, %d interrupt in", + __func__, serial->num_bulk_in, + serial->num_bulk_out, serial->num_interrupt_in); + if ((serial->num_bulk_in != 1) || (serial->num_bulk_out != 1)) { + dbg("Device has wrong number of bulk endpoints!"); + return -ENODEV; + } + iface_desc = serial->interface->cur_altsetting; + /* print endpoint addresses so we can check them later + * by hand */ + for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) + { + endpoint = &iface_desc->endpoint[i].desc; + + if ((endpoint->bEndpointAddress & 0x80) && + ((endpoint->bmAttributes & 3) == 0x02)) { + /* we found a bulk in endpoint */ + dbg("found bulk in at 0x%x", + endpoint->bEndpointAddress); + } + + if (((endpoint->bEndpointAddress & 0x80) == 0x00) && + ((endpoint->bmAttributes & 3) == 0x02)) + { + /* we found a bulk out endpoint */ + dbg("found bulk out at 0x%x", + endpoint->bEndpointAddress); + } + } /* end printing endpoint addresses */ + + /* Now setup per port private data, which replaces all the things + * that quatech added to standard kernel structures in their driver */ + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + qt2_port = kzalloc(sizeof(*qt2_port), GFP_KERNEL); + if (!qt2_port) { + dbg("%s: kmalloc for quatech2_port (%d) failed!.", + __func__, i); + return -ENOMEM; + } + spin_lock_init(&qt2_port->lock); + if (i == 0) + qt2_port->open_ports = 0; /* no ports */ + else + qt2_port->open_ports = -1; /* unused */ + + usb_set_serial_port_data(port, qt2_port); + + } + /* switch on power to the hardware */ + if (qt2_boxpoweron(serial) < 0) { + dbg("qt2_boxpoweron() failed"); + goto startup_error; + } + /* set all ports to RS232 mode */ + for (i = 0; i < serial->num_ports; ++i) { + if (qt2_boxsetQMCR(serial, i, QU2BOX232) < 0) { + dbg("qt2_boxsetQMCR() on port %d failed", + i); + goto startup_error; + } + } + + return 0; + +startup_error: + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + qt2_port = qt2_get_port_private(port); + kfree(qt2_port); + usb_set_serial_port_data(port, NULL); + } + + dbg("Exit fail %s\n", __func__); + return -EIO; +} + +static void qt2_release(struct usb_serial *serial) +{ + struct usb_serial_port *port; + struct quatech2_port *qt_port; + int i; + + dbg("enterting %s", __func__); + + for (i = 0; i < serial->num_ports; i++) { + port = serial->port[i]; + if (!port) + continue; + + qt_port = usb_get_serial_port_data(port); + kfree(qt_port); + usb_set_serial_port_data(port, NULL); + } +} +/* This function is called once per serial port on the device. + * The tty_struct and the usb_serial_port belong to this port, + * i.e. there are multiple ones for a multi-port device. + * However the usb_serial_port structure has a back-pointer + * to the parent usb_serial structure which belongs to the device, + * so we can access either the device-wide information or + * any other port's information (because there are also forward + * pointers) via that pointer. + * This is most helpful if the device shares resources (e.g. end + * points) between different ports + */ +int qt2_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) +{ + struct usb_serial *serial; /* device structure */ + struct usb_serial_port *port0; /* first port structure on device */ + struct quatech2_port *port_extra; /* extra data for this port */ + struct quatech2_port *port0_extra; /* extra data for first port */ + struct qt2_status_data ChannelData; + unsigned short default_divisor = QU2BOXSPD9600; + unsigned char default_LCR = SERIAL_8_DATA; + int status; + + if (port_paranoia_check(port, __func__)) + return -ENODEV; + + dbg("%s - port %d\n", __func__, port->number); + + serial = port->serial; /* get the parent device structure */ + if (serial_paranoia_check(serial, __func__)) + return -ENODEV; + port0 = serial->port[0]; /* get the first port's device structure */ + + port_extra = qt2_get_port_private(port); + port0_extra = qt2_get_port_private(port0); + + if (port_extra == NULL || port0_extra == NULL) + return -ENODEV; + + usb_clear_halt(serial->dev, port->write_urb->pipe); + usb_clear_halt(serial->dev, port->read_urb->pipe); + port0_extra->open_ports++; + + /* FIXME: are these needed? Does it even do anything useful? */ + /* get the modem and line status values from the UART */ + status = qt2_openboxchannel(serial, port->number, + &ChannelData); + if (status < 0) { + dbg("qt2_openboxchannel on channel %d failed", + port->number); + return status; + } + port_extra->shadowLSR = ChannelData.line_status & + (SERIAL_LSR_OE | SERIAL_LSR_PE | SERIAL_LSR_FE | + SERIAL_LSR_BI); + + port_extra->shadowMSR = ChannelData.modem_status & + (SERIAL_MSR_CTS | SERIAL_MSR_DSR | SERIAL_MSR_RI | + SERIAL_MSR_CD); + + port_extra->fifo_empty_flag = true; + dbg("qt2_openboxchannel on channel %d completed.", + port->number); + + /* Set Baud rate to default and turn off flow control here */ + status = qt2_conf_uart(serial, port->number, default_divisor, + default_LCR); + if (status < 0) { + dbg("qt2_conf_uart() failed on channel %d", + port->number); + return status; + } + dbg("qt2_conf_uart() completed on channel %d", + port->number); + + dbg("port number is %d", port->number); + dbg("serial number is %d", port->serial->minor); + + /* We need to set up endpoints here. We only + * have one pair of endpoints per device, so in fact + * we only need to set up endpoints on the first time + * round, not subsequent ones. + * When we do a write to a port, we will use the same endpoint + * regardless of the port, with a 5-byte header added on to + * tell the box which port it should eventually come out of, + * so the same endpoint information needs to be visible to + * write calls regardless of which port is being written. + * To this end we actually keep the relevant endpoints + * in port 0's structure, because that's always there + * and avoids providing our own duplicate members in some + * user data structure for the same purpose. + * URBs will be allocated and freed dynamically as the are + * used, so are not touched here. + */ + if (port0_extra->open_ports == 1) { + /* this is first port to be opened */ + } + + dbg("Bulkin endpoint is %d", port->bulk_in_endpointAddress); + dbg("BulkOut endpoint is %d", port->bulk_out_endpointAddress); + dbg("Interrupt endpoint is %d", port->interrupt_in_endpointAddress); + + /* initialize our wait queues */ + init_waitqueue_head(&port_extra->wait); + + /* remember to store port_extra and port0 back again at end !*/ + qt2_set_port_private(port, port_extra); + qt2_set_port_private(serial->port[0], port0_extra); + + return 0; +} + +/* internal, private helper functions for the driver */ + +/* Power up the FPGA in the box to get it working */ +static int qt2_boxpoweron(struct usb_serial *serial) +{ + int result; + __u8 Direcion; + unsigned int pipe; + Direcion = USBD_TRANSFER_DIRECTION_OUT; + pipe = usb_rcvctrlpipe(serial->dev, 0); + result = usb_control_msg(serial->dev, pipe, QT_SET_GET_DEVICE, + Direcion, QU2BOXPWRON, 0x00, NULL, 0x00, + 5000); + return result; +} + +/* + * qt2_boxsetQMCR Issue a QT_GET_SET_QMCR vendor-spcific request on the + * default control pipe. If successful return the number of bytes written, + * otherwise return a negative error number of the problem. + */ +static int qt2_boxsetQMCR(struct usb_serial *serial, __u16 Uart_Number, + __u8 QMCR_Value) +{ + int result; + __u16 PortSettings; + + PortSettings = (__u16)(QMCR_Value); + + dbg("%s(): Port = %d, PortSettings = 0x%x", __func__, + Uart_Number, PortSettings); + + result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + QT_GET_SET_QMCR, 0x40, PortSettings, + (__u16)Uart_Number, NULL, 0, 5000); + return result; +} + +static int port_paranoia_check(struct usb_serial_port *port, + const char *function) +{ + if (!port) { + dbg("%s - port == NULL", function); + return -1; + } + if (!port->serial) { + dbg("%s - port->serial == NULL\n", function); + return -1; + } + return 0; +} + +static int serial_paranoia_check(struct usb_serial *serial, + const char *function) +{ + if (!serial) { + dbg("%s - serial == NULL\n", function); + return -1; + } + + if (!serial->type) { + dbg("%s - serial->type == NULL!", function); + return -1; + } + + return 0; +} + +static inline struct quatech2_port *qt2_get_port_private(struct usb_serial_port + *port) +{ + return (struct quatech2_port *)usb_get_serial_port_data(port); +} + +static inline void qt2_set_port_private(struct usb_serial_port *port, + struct quatech2_port *data) +{ + usb_set_serial_port_data(port, (void *)data); +} + +static int qt2_openboxchannel(struct usb_serial *serial, __u16 + Uart_Number, struct qt2_status_data *status) +{ + int result; + __u16 length; + __u8 Direcion; + unsigned int pipe; + length = sizeof(struct qt2_status_data); + Direcion = USBD_TRANSFER_DIRECTION_IN; + pipe = usb_rcvctrlpipe(serial->dev, 0); + result = usb_control_msg(serial->dev, pipe, QT_OPEN_CLOSE_CHANNEL, + Direcion, 0x00, Uart_Number, status, length, 5000); + return result; +} +static int qt2_closeboxchannel(struct usb_serial *serial, __u16 Uart_Number) +{ + int result; + __u8 direcion; + unsigned int pipe; + direcion = USBD_TRANSFER_DIRECTION_OUT; + pipe = usb_sndctrlpipe(serial->dev, 0); + result = usb_control_msg(serial->dev, pipe, QT_OPEN_CLOSE_CHANNEL, + direcion, 0, Uart_Number, NULL, 0, 5000); + return result; +} + +/* qt2_conf_uart Issue a SET_UART vendor-spcific request on the default + * control pipe. If successful sets baud rate divisor and LCR value + */ +static int qt2_conf_uart(struct usb_serial *serial, unsigned short Uart_Number, + unsigned short divisor, unsigned char LCR) +{ + int result; + unsigned short UartNumandLCR; + + UartNumandLCR = (LCR << 8) + Uart_Number; + + result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + QT_GET_SET_UART, 0x40, divisor, UartNumandLCR, + NULL, 0, 300); + return result; +} + +/* + * last things in file: stuff to register this driver into the generic + * USB serial framework. + */ + +static struct usb_serial_driver quatech2_device = { + .driver = { + .owner = THIS_MODULE, + .name = "quatech_usb2", + }, + .description = DRIVER_DESC, + .usb_driver = &quausb2_usb_driver, + .id_table = quausb2_id_table, + .num_ports = 8, + .open = qt2_open, + /*.close = qt_close, + .write = qt_write, + .write_room = qt_write_room, + .chars_in_buffer = qt_chars_in_buffer, + .throttle = qt_throttle, + .unthrottle = qt_unthrottle,*/ + .calc_num_ports = qt2_calc_num_ports, + /*.ioctl = qt_ioctl, + .set_termios = qt_set_termios, + .break_ctl = qt_break, + .tiocmget = qt_tiocmget, + .tiocmset = qt_tiocmset,*/ + .attach = qt2_attach, + .release = qt2_release, +}; + +static int __init quausb2_usb_init(void) +{ + int retval; + + dbg("%s\n", __func__); + + /* register with usb-serial */ + retval = usb_serial_register(&quatech2_device); + + if (retval) + goto failed_usb_serial_register; + + printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" + DRIVER_DESC "\n"); + + /* register with usb */ + + retval = usb_register(&quausb2_usb_driver); + if (retval == 0) + return 0; + + /* if we're here, usb_register() failed */ + usb_serial_deregister(&quatech2_device); +failed_usb_serial_register: + return retval; +} + + + +static void __exit quausb2_usb_exit(void) +{ + usb_deregister(&quausb2_usb_driver); + usb_serial_deregister(&quatech2_device); +} + +module_init(quausb2_usb_init); +module_exit(quausb2_usb_exit); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +module_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug enabled or not");