diff options
Diffstat (limited to 'drivers/staging/uc2322/aten2011.c')
| -rw-r--r-- | drivers/staging/uc2322/aten2011.c | 2430 |
1 files changed, 2430 insertions, 0 deletions
diff --git a/drivers/staging/uc2322/aten2011.c b/drivers/staging/uc2322/aten2011.c new file mode 100644 index 000000000000..9c62f787cc9c --- /dev/null +++ b/drivers/staging/uc2322/aten2011.c @@ -0,0 +1,2430 @@ +/* + * Aten 2011 USB serial driver for 4 port devices + * + * Copyright (C) 2000 Inside Out Networks + * Copyright (C) 2001-2002, 2009 Greg Kroah-Hartman <greg@kroah.com> + * Copyright (C) 2009 Novell Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + */ + +#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> +#include <linux/tty_flip.h> +#include <linux/module.h> +#include <linux/serial.h> +#include <linux/uaccess.h> +#include <linux/usb.h> +#include <linux/usb/serial.h> + + +#define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */ +#define ZLP_REG2 0x3B /* Zero_Flag_Reg2 59 */ +#define ZLP_REG3 0x3C /* Zero_Flag_Reg3 60 */ +#define ZLP_REG4 0x3D /* Zero_Flag_Reg4 61 */ +#define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */ + +/* Interrupt Rotinue Defines */ +#define SERIAL_IIR_RLS 0x06 +#define SERIAL_IIR_RDA 0x04 +#define SERIAL_IIR_CTI 0x0c +#define SERIAL_IIR_THR 0x02 +#define SERIAL_IIR_MS 0x00 + +/* Emulation of the bit mask on the LINE STATUS REGISTER. */ +#define SERIAL_LSR_DR 0x0001 +#define SERIAL_LSR_OE 0x0002 +#define SERIAL_LSR_PE 0x0004 +#define SERIAL_LSR_FE 0x0008 +#define SERIAL_LSR_BI 0x0010 +#define SERIAL_LSR_THRE 0x0020 +#define SERIAL_LSR_TEMT 0x0040 +#define SERIAL_LSR_FIFOERR 0x0080 + +/* MSR bit defines(place holders) */ +#define ATEN_MSR_DELTA_CTS 0x10 +#define ATEN_MSR_DELTA_DSR 0x20 +#define ATEN_MSR_DELTA_RI 0x40 +#define ATEN_MSR_DELTA_CD 0x80 + +/* Serial Port register Address */ +#define RECEIVE_BUFFER_REGISTER ((__u16)(0x00)) +#define TRANSMIT_HOLDING_REGISTER ((__u16)(0x00)) +#define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01)) +#define INTERRUPT_IDENT_REGISTER ((__u16)(0x02)) +#define FIFO_CONTROL_REGISTER ((__u16)(0x02)) +#define LINE_CONTROL_REGISTER ((__u16)(0x03)) +#define MODEM_CONTROL_REGISTER ((__u16)(0x04)) +#define LINE_STATUS_REGISTER ((__u16)(0x05)) +#define MODEM_STATUS_REGISTER ((__u16)(0x06)) +#define SCRATCH_PAD_REGISTER ((__u16)(0x07)) +#define DIVISOR_LATCH_LSB ((__u16)(0x00)) +#define DIVISOR_LATCH_MSB ((__u16)(0x01)) + +#define SP1_REGISTER ((__u16)(0x00)) +#define CONTROL1_REGISTER ((__u16)(0x01)) +#define CLK_MULTI_REGISTER ((__u16)(0x02)) +#define CLK_START_VALUE_REGISTER ((__u16)(0x03)) +#define DCR1_REGISTER ((__u16)(0x04)) +#define GPIO_REGISTER ((__u16)(0x07)) + +#define SERIAL_LCR_DLAB ((__u16)(0x0080)) + +/* + * URB POOL related defines + */ +#define NUM_URBS 16 /* URB Count */ +#define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ + +#define USB_VENDOR_ID_ATENINTL 0x0557 +#define ATENINTL_DEVICE_ID_2011 0x2011 +#define ATENINTL_DEVICE_ID_7820 0x7820 + +static struct usb_device_id id_table[] = { + { USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_2011) }, + { USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_7820) }, + { } /* terminating entry */ +}; +MODULE_DEVICE_TABLE(usb, id_table); + +/* This structure holds all of the local port information */ +struct ATENINTL_port { + int port_num; /*Actual port number in the device(1,2,etc)*/ + __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ + unsigned char *bulk_out_buffer; /* buffer used for the bulk out endpoint */ + struct urb *write_urb; /* write URB for this port */ + __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ + unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ + struct urb *read_urb; /* read URB for this port */ + __u8 shadowLCR; /* last LCR value received */ + __u8 shadowMCR; /* last MCR value received */ + char open; + char chaseResponsePending; + wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ + wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ + struct async_icount icount; + struct usb_serial_port *port; /* loop back to the owner of this object */ + /*Offsets*/ + __u8 SpRegOffset; + __u8 ControlRegOffset; + __u8 DcrRegOffset; + /* for processing control URBS in interrupt context */ + struct urb *control_urb; + char *ctrl_buf; + int MsrLsr; + + struct urb *write_urb_pool[NUM_URBS]; + /* we pass a pointer to this as the arguement sent to cypress_set_termios old_termios */ + struct ktermios tmp_termios; /* stores the old termios settings */ + spinlock_t lock; /* private lock */ +}; + +/* This structure holds all of the individual serial device information */ +struct ATENINTL_serial { + __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */ + unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */ + struct urb *interrupt_read_urb; /* our interrupt urb */ + __u8 bulk_in_endpoint; /* the bulk in endpoint handle */ + unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */ + struct urb *read_urb; /* our bulk read urb */ + __u8 bulk_out_endpoint; /* the bulk out endpoint handle */ + struct usb_serial *serial; /* loop back to the owner of this object */ + int ATEN2011_spectrum_2or4ports; /* this says the number of ports in the device */ + /* Indicates about the no.of opened ports of an individual USB-serial adapater. */ + unsigned int NoOfOpenPorts; + /* a flag for Status endpoint polling */ + unsigned char status_polling_started; +}; + +static void ATEN2011_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, + struct ktermios *old_termios); +static void ATEN2011_change_port_settings(struct tty_struct *tty, + struct ATENINTL_port *ATEN2011_port, + struct ktermios *old_termios); + +/************************************* + * Bit definitions for each register * + *************************************/ +#define LCR_BITS_5 0x00 /* 5 bits/char */ +#define LCR_BITS_6 0x01 /* 6 bits/char */ +#define LCR_BITS_7 0x02 /* 7 bits/char */ +#define LCR_BITS_8 0x03 /* 8 bits/char */ +#define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ + +#define LCR_STOP_1 0x00 /* 1 stop bit */ +#define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */ +#define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */ +#define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ + +#define LCR_PAR_NONE 0x00 /* No parity */ +#define LCR_PAR_ODD 0x08 /* Odd parity */ +#define LCR_PAR_EVEN 0x18 /* Even parity */ +#define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */ +#define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */ +#define LCR_PAR_MASK 0x38 /* Mask for parity field */ + +#define LCR_SET_BREAK 0x40 /* Set Break condition */ +#define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */ + +#define MCR_DTR 0x01 /* Assert DTR */ +#define MCR_RTS 0x02 /* Assert RTS */ +#define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */ +#define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */ +#define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */ +#define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */ + +#define ATEN2011_MSR_CTS 0x10 /* Current state of CTS */ +#define ATEN2011_MSR_DSR 0x20 /* Current state of DSR */ +#define ATEN2011_MSR_RI 0x40 /* Current state of RI */ +#define ATEN2011_MSR_CD 0x80 /* Current state of CD */ + + +static int debug; + +/* + * Version Information + */ +#define DRIVER_VERSION "2.0" +#define DRIVER_DESC "ATENINTL 2011 USB Serial Adapter" + +/* + * Defines used for sending commands to port + */ + +#define ATEN_WDR_TIMEOUT (50) /* default urb timeout */ + +/* Requests */ +#define ATEN_RD_RTYPE 0xC0 +#define ATEN_WR_RTYPE 0x40 +#define ATEN_RDREQ 0x0D +#define ATEN_WRREQ 0x0E +#define ATEN_CTRL_TIMEOUT 500 +#define VENDOR_READ_LENGTH (0x01) + +/* set to 1 for RS485 mode and 0 for RS232 mode */ +/* FIXME make this somehow dynamic and not build time specific */ +static int RS485mode; + +static int set_reg_sync(struct usb_serial_port *port, __u16 reg, __u16 val) +{ + struct usb_device *dev = port->serial->dev; + val = val & 0x00ff; + + dbg("%s: is %x, value %x", __func__, reg, val); + + return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ATEN_WRREQ, + ATEN_WR_RTYPE, val, reg, NULL, 0, + ATEN_WDR_TIMEOUT); +} + +static int get_reg_sync(struct usb_serial_port *port, __u16 reg, __u16 *val) +{ + struct usb_device *dev = port->serial->dev; + int ret; + + ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), ATEN_RDREQ, + ATEN_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH, + ATEN_WDR_TIMEOUT); + dbg("%s: offset is %x, return val %x", __func__, reg, *val); + *val = (*val) & 0x00ff; + return ret; +} + +static int set_uart_reg(struct usb_serial_port *port, __u16 reg, __u16 val) +{ + struct usb_device *dev = port->serial->dev; + struct ATENINTL_serial *a_serial; + __u16 minor; + + a_serial = usb_get_serial_data(port->serial); + minor = port->serial->minor; + if (minor == SERIAL_TTY_NO_MINOR) + minor = 0; + val = val & 0x00ff; + + /* + * For the UART control registers, + * the application number need to be Or'ed + */ + if (a_serial->ATEN2011_spectrum_2or4ports == 4) + val |= (((__u16)port->number - minor) + 1) << 8; + else { + if (((__u16) port->number - minor) == 0) + val |= (((__u16)port->number - minor) + 1) << 8; + else + val |= (((__u16)port->number - minor) + 2) << 8; + } + dbg("%s: application number is %x", __func__, val); + + return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ATEN_WRREQ, + ATEN_WR_RTYPE, val, reg, NULL, 0, + ATEN_WDR_TIMEOUT); +} + +static int get_uart_reg(struct usb_serial_port *port, __u16 reg, __u16 *val) +{ + struct usb_device *dev = port->serial->dev; + int ret = 0; + __u16 wval; + struct ATENINTL_serial *a_serial; + __u16 minor = port->serial->minor; + + a_serial = usb_get_serial_data(port->serial); + if (minor == SERIAL_TTY_NO_MINOR) + minor = 0; + + /* wval is same as application number */ + if (a_serial->ATEN2011_spectrum_2or4ports == 4) + wval = (((__u16)port->number - minor) + 1) << 8; + else { + if (((__u16) port->number - minor) == 0) + wval = (((__u16) port->number - minor) + 1) << 8; + else + wval = (((__u16) port->number - minor) + 2) << 8; + } + dbg("%s: application number is %x", __func__, wval); + ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), ATEN_RDREQ, + ATEN_RD_RTYPE, wval, reg, val, VENDOR_READ_LENGTH, + ATEN_WDR_TIMEOUT); + *val = (*val) & 0x00ff; + return ret; +} + +static int handle_newMsr(struct ATENINTL_port *port, __u8 newMsr) +{ + struct ATENINTL_port *ATEN2011_port; + struct async_icount *icount; + ATEN2011_port = port; + icount = &ATEN2011_port->icount; + if (newMsr & + (ATEN_MSR_DELTA_CTS | ATEN_MSR_DELTA_DSR | ATEN_MSR_DELTA_RI | + ATEN_MSR_DELTA_CD)) { + icount = &ATEN2011_port->icount; + + /* update input line counters */ + if (newMsr & ATEN_MSR_DELTA_CTS) + icount->cts++; + if (newMsr & ATEN_MSR_DELTA_DSR) + icount->dsr++; + if (newMsr & ATEN_MSR_DELTA_CD) + icount->dcd++; + if (newMsr & ATEN_MSR_DELTA_RI) + icount->rng++; + } + + return 0; +} + +static int handle_newLsr(struct ATENINTL_port *port, __u8 newLsr) +{ + struct async_icount *icount; + + dbg("%s - %02x", __func__, newLsr); + + if (newLsr & SERIAL_LSR_BI) { + /* + * Parity and Framing errors only count if they occur exclusive + * of a break being received. + */ + newLsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI); + } + + /* update input line counters */ + icount = &port->icount; + if (newLsr & SERIAL_LSR_BI) + icount->brk++; + if (newLsr & SERIAL_LSR_OE) + icount->overrun++; + if (newLsr & SERIAL_LSR_PE) + icount->parity++; + if (newLsr & SERIAL_LSR_FE) + icount->frame++; + + return 0; +} + +static void ATEN2011_control_callback(struct urb *urb) +{ + unsigned char *data; + struct ATENINTL_port *ATEN2011_port; + __u8 regval = 0x0; + + switch (urb->status) { + case 0: + /* success */ + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dbg("%s - urb shutting down with status: %d", __func__, + urb->status); + return; + default: + dbg("%s - nonzero urb status received: %d", __func__, + urb->status); + goto exit; + } + + ATEN2011_port = (struct ATENINTL_port *)urb->context; + + dbg("%s urb buffer size is %d", __func__, urb->actual_length); + dbg("%s ATEN2011_port->MsrLsr is %d port %d", __func__, + ATEN2011_port->MsrLsr, ATEN2011_port->port_num); + data = urb->transfer_buffer; + regval = (__u8) data[0]; + dbg("%s data is %x", __func__, regval); + if (ATEN2011_port->MsrLsr == 0) + handle_newMsr(ATEN2011_port, regval); + else if (ATEN2011_port->MsrLsr == 1) + handle_newLsr(ATEN2011_port, regval); + +exit: + return; +} + +static int ATEN2011_get_reg(struct ATENINTL_port *ATEN, __u16 Wval, __u16 reg, + __u16 *val) +{ + struct usb_device *dev = ATEN->port->serial->dev; + struct usb_ctrlrequest *dr = NULL; + unsigned char *buffer = NULL; + int ret = 0; + buffer = (__u8 *) ATEN->ctrl_buf; + + dr = (void *)(buffer + 2); + dr->bRequestType = ATEN_RD_RTYPE; + dr->bRequest = ATEN_RDREQ; + dr->wValue = cpu_to_le16(Wval); + dr->wIndex = cpu_to_le16(reg); + dr->wLength = cpu_to_le16(2); + + usb_fill_control_urb(ATEN->control_urb, dev, usb_rcvctrlpipe(dev, 0), + (unsigned char *)dr, buffer, 2, + ATEN2011_control_callback, ATEN); + ATEN->control_urb->transfer_buffer_length = 2; + ret = usb_submit_urb(ATEN->control_urb, GFP_ATOMIC); + return ret; +} + +static void ATEN2011_interrupt_callback(struct urb *urb) +{ + int result; + int length; + struct ATENINTL_port *ATEN2011_port; + struct ATENINTL_serial *ATEN2011_serial; + struct usb_serial *serial; + __u16 Data; + unsigned char *data; + __u8 sp[5], st; + int i; + __u16 wval; + int minor; + + dbg("%s", " : Entering"); + + ATEN2011_serial = (struct ATENINTL_serial *)urb->context; + + switch (urb->status) { + case 0: + /* success */ + break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + dbg("%s - urb shutting down with status: %d", __func__, + urb->status); + return; + default: + dbg("%s - nonzero urb status received: %d", __func__, + urb->status); + goto exit; + } + length = urb->actual_length; + data = urb->transfer_buffer; + + serial = ATEN2011_serial->serial; + + /* ATENINTL get 5 bytes + * Byte 1 IIR Port 1 (port.number is 0) + * Byte 2 IIR Port 2 (port.number is 1) + * Byte 3 IIR Port 3 (port.number is 2) + * Byte 4 IIR Port 4 (port.number is 3) + * Byte 5 FIFO status for both */ + + if (length && length > 5) { + dbg("%s", "Wrong data !!!"); + return; + } + + /* MATRIX */ + if (ATEN2011_serial->ATEN2011_spectrum_2or4ports == 4) { + sp[0] = (__u8) data[0]; + sp[1] = (__u8) data[1]; + sp[2] = (__u8) data[2]; + sp[3] = (__u8) data[3]; + st = (__u8) data[4]; + } else { + sp[0] = (__u8) data[0]; + sp[1] = (__u8) data[2]; + /* sp[2]=(__u8)data[2]; */ + /* sp[3]=(__u8)data[3]; */ + st = (__u8) data[4]; + + } + for (i = 0; i < serial->num_ports; i++) { + ATEN2011_port = usb_get_serial_port_data(serial->port[i]); + minor = serial->minor; + if (minor == SERIAL_TTY_NO_MINOR) + minor = 0; + if ((ATEN2011_serial->ATEN2011_spectrum_2or4ports == 2) + && (i != 0)) + wval = + (((__u16) serial->port[i]->number - + (__u16) (minor)) + 2) << 8; + else + wval = + (((__u16) serial->port[i]->number - + (__u16) (minor)) + 1) << 8; + if (ATEN2011_port->open != 0) { + if (sp[i] & 0x01) { + dbg("SP%d No Interrupt !!!", i); + } else { + switch (sp[i] & 0x0f) { + case SERIAL_IIR_RLS: + dbg("Serial Port %d: Receiver status error or address bit detected in 9-bit mode", i); + ATEN2011_port->MsrLsr = 1; + ATEN2011_get_reg(ATEN2011_port, wval, + LINE_STATUS_REGISTER, + &Data); + break; + case SERIAL_IIR_MS: + dbg("Serial Port %d: Modem status change", i); + ATEN2011_port->MsrLsr = 0; + ATEN2011_get_reg(ATEN2011_port, wval, + MODEM_STATUS_REGISTER, + &Data); + break; + } + } + } + + } +exit: + if (ATEN2011_serial->status_polling_started == 0) + return; + + result = usb_submit_urb(urb, GFP_ATOMIC); + if (result) { + dev_err(&urb->dev->dev, + "%s - Error %d submitting interrupt urb\n", + __func__, result); + } + + return; +} + +static void ATEN2011_bulk_in_callback(struct urb *urb) +{ + int status; + unsigned char *data; + struct usb_serial *serial; + struct usb_serial_port *port; + struct ATENINTL_serial *ATEN2011_serial; + struct ATENINTL_port *ATEN2011_port; + struct tty_struct *tty; + + if (urb->status) { + dbg("nonzero read bulk status received: %d", urb->status); + return; + } + + ATEN2011_port = (struct ATENINTL_port *)urb->context; + + port = (struct usb_serial_port *)ATEN2011_port->port; + serial = port->serial; + + dbg("%s", "Entering..."); + + data = urb->transfer_buffer; + ATEN2011_serial = usb_get_serial_data(serial); + + if (urb->actual_length) { + tty = tty_port_tty_get(&ATEN2011_port->port->port); + if (tty) { + tty_buffer_request_room(tty, urb->actual_length); + tty_insert_flip_string(tty, data, urb->actual_length); + tty_flip_buffer_push(tty); + tty_kref_put(tty); + } + + ATEN2011_port->icount.rx += urb->actual_length; + dbg("ATEN2011_port->icount.rx is %d:", + ATEN2011_port->icount.rx); + } + + if (!ATEN2011_port->read_urb) { + dbg("%s", "URB KILLED !!!"); + return; + } + + if (ATEN2011_port->read_urb->status != -EINPROGRESS) { + ATEN2011_port->read_urb->dev = serial->dev; + + status = usb_submit_urb(ATEN2011_port->read_urb, GFP_ATOMIC); + if (status) + dbg("usb_submit_urb(read bulk) failed, status = %d", status); + } +} + +static void ATEN2011_bulk_out_data_callback(struct urb *urb) +{ + struct ATENINTL_port *ATEN2011_port; + struct tty_struct *tty; + + if (urb->status) { + dbg("nonzero write bulk status received:%d", urb->status); + return; + } + + ATEN2011_port = (struct ATENINTL_port *)urb->context; + + dbg("%s", "Entering ........."); + + tty = tty_port_tty_get(&ATEN2011_port->port->port); + + if (tty && ATEN2011_port->open) + /* tell the tty driver that something has changed */ + tty_wakeup(tty); + + /* schedule_work(&ATEN2011_port->port->work); */ + tty_kref_put(tty); + +} + +#ifdef ATENSerialProbe +static int ATEN2011_serial_probe(struct usb_serial *serial, + const struct usb_device_id *id) +{ + + /*need to implement the mode_reg reading and updating\ + structures usb_serial_ device_type\ + (i.e num_ports, num_bulkin,bulkout etc) */ + /* Also we can update the changes attach */ + return 1; +} +#endif + +static int ATEN2011_open(struct tty_struct *tty, struct usb_serial_port *port, + struct file *filp) +{ + int response; + int j; + struct usb_serial *serial; + struct urb *urb; + __u16 Data; + int status; + struct ATENINTL_serial *ATEN2011_serial; + struct ATENINTL_port *ATEN2011_port; + struct ktermios tmp_termios; + int minor; + + serial = port->serial; + + ATEN2011_port = usb_get_serial_port_data(port); + + if (ATEN2011_port == NULL) + return -ENODEV; + + ATEN2011_serial = usb_get_serial_data(serial); + if (ATEN2011_serial == NULL) + return -ENODEV; + + /* increment the number of opened ports counter here */ + ATEN2011_serial->NoOfOpenPorts++; + + usb_clear_halt(serial->dev, port->write_urb->pipe); + usb_clear_halt(serial->dev, port->read_urb->pipe); + + /* Initialising the write urb pool */ + for (j = 0; j < NUM_URBS; ++j) { + urb = usb_alloc_urb(0, GFP_ATOMIC); + ATEN2011_port->write_urb_pool[j] = urb; + + if (urb == NULL) { + err("No more urbs???"); + continue; + } + + urb->transfer_buffer = NULL; + urb->transfer_buffer = + kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); + if (!urb->transfer_buffer) { + err("%s-out of memory for urb buffers.", __func__); + continue; + } + } + +/***************************************************************************** + * Initialize ATEN2011 -- Write Init values to corresponding Registers + * + * Register Index + * 1 : IER + * 2 : FCR + * 3 : LCR + * 4 : MCR + * + * 0x08 : SP1/2 Control Reg + *****************************************************************************/ + +/* NEED to check the fallowing Block */ + + Data = 0x0; + status = get_reg_sync(port, ATEN2011_port->SpRegOffset, &Data); + if (status < 0) { + dbg("Reading Spreg failed"); + return -1; + } + Data |= 0x80; + status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data); + if (status < 0) { + dbg("writing Spreg failed"); + return -1; + } + + Data &= ~0x80; + status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data); + if (status < 0) { + dbg("writing Spreg failed"); + return -1; + } + +/* End of block to be checked */ +/**************************CHECK***************************/ + + if (RS485mode == 0) + Data = 0xC0; + else + Data = 0x00; + status = set_uart_reg(port, SCRATCH_PAD_REGISTER, Data); + if (status < 0) { + dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x", status); + return -1; + } else + dbg("SCRATCH_PAD_REGISTER Writing success status%d", status); + +/**************************CHECK***************************/ + + Data = 0x0; + status = get_reg_sync(port, ATEN2011_port->ControlRegOffset, &Data); + if (status < 0) { + dbg("Reading Controlreg failed"); + return -1; + } + Data |= 0x08; /* Driver done bit */ + Data |= 0x20; /* rx_disable */ + status = 0; + status = + set_reg_sync(port, ATEN2011_port->ControlRegOffset, Data); + if (status < 0) { + dbg("writing Controlreg failed"); + return -1; + } + /* + * do register settings here + * Set all regs to the device default values. + * First Disable all interrupts. + */ + + Data = 0x00; + status = set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); + if (status < 0) { + dbg("disableing interrupts failed"); + return -1; + } + /* Set FIFO_CONTROL_REGISTER to the default value */ + Data = 0x00; + status = set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); + if (status < 0) { + dbg("Writing FIFO_CONTROL_REGISTER failed"); + return -1; + } + + Data = 0xcf; /* chk */ + status = set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); + if (status < 0) { + dbg("Writing FIFO_CONTROL_REGISTER failed"); + return -1; + } + + Data = 0x03; /* LCR_BITS_8 */ + status = set_uart_reg(port, LINE_CONTROL_REGISTER, Data); + ATEN2011_port->shadowLCR = Data; + + Data = 0x0b; /* MCR_DTR|MCR_RTS|MCR_MASTER_IE */ + status = set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + ATEN2011_port->shadowMCR = Data; + +#ifdef Check + Data = 0x00; + status = get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); + ATEN2011_port->shadowLCR = Data; + + Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */ + status = set_uart_reg(port, LINE_CONTROL_REGISTER, Data); + + Data = 0x0c; + status = set_uart_reg(port, DIVISOR_LATCH_LSB, Data); + + Data = 0x0; + status = set_uart_reg(port, DIVISOR_LATCH_MSB, Data); + + Data = 0x00; + status = get_uart_reg(port, LINE_CONTROL_REGISTER, &Data); + +/* Data = ATEN2011_port->shadowLCR; */ /* data latch disable */ + Data = Data & ~SERIAL_LCR_DLAB; + status = set_uart_reg(port, LINE_CONTROL_REGISTER, Data); + ATEN2011_port->shadowLCR = Data; +#endif + /* clearing Bulkin and Bulkout Fifo */ + Data = 0x0; + status = get_reg_sync(port, ATEN2011_port->SpRegOffset, &Data); + + Data = Data | 0x0c; + status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data); + + Data = Data & ~0x0c; + status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data); + /* Finally enable all interrupts */ + Data = 0x0; + Data = 0x0c; + status = set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); + + /* clearing rx_disable */ + Data = 0x0; + status = get_reg_sync(port, ATEN2011_port->ControlRegOffset, &Data); + Data = Data & ~0x20; + status = set_reg_sync(port, ATEN2011_port->ControlRegOffset, Data); + + /* rx_negate */ + Data = 0x0; + status = get_reg_sync(port, ATEN2011_port->ControlRegOffset, &Data); + Data = Data | 0x10; + status = 0; + status = set_reg_sync(port, ATEN2011_port->ControlRegOffset, Data); + + /* + * Check to see if we've set up our endpoint info yet + * (can't set it up in ATEN2011_startup as the structures + * were not set up at that time.) + */ + if (ATEN2011_serial->NoOfOpenPorts == 1) { + /* start the status polling here */ + ATEN2011_serial->status_polling_started = 1; + /* If not yet set, Set here */ + ATEN2011_serial->interrupt_in_buffer = + serial->port[0]->interrupt_in_buffer; + ATEN2011_serial->interrupt_in_endpoint = + serial->port[0]->interrupt_in_endpointAddress; + ATEN2011_serial->interrupt_read_urb = + serial->port[0]->interrupt_in_urb; + + /* set up interrupt urb */ + usb_fill_int_urb(ATEN2011_serial->interrupt_read_urb, + serial->dev, + usb_rcvintpipe(serial->dev, + ATEN2011_serial-> + interrupt_in_endpoint), + ATEN2011_serial->interrupt_in_buffer, + ATEN2011_serial->interrupt_read_urb-> + transfer_buffer_length, + ATEN2011_interrupt_callback, ATEN2011_serial, + ATEN2011_serial->interrupt_read_urb->interval); + + /* start interrupt read for ATEN2011 * + * will continue as long as ATEN2011 is connected */ + + response = + usb_submit_urb(ATEN2011_serial->interrupt_read_urb, + GFP_KERNEL); + if (response) { + dbg("%s - Error %d submitting interrupt urb", + __func__, response); + } + + } + + /* + * See if we've set up our endpoint info yet + * (can't set it up in ATEN2011_startup as the + * structures were not set up at that time.) + */ + + dbg("port number is %d", port->number); + dbg("serial number is %d", port->serial->minor); + 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); + dbg("port's number in the device is %d", ATEN2011_port->port_num); + ATEN2011_port->bulk_in_buffer = port->bulk_in_buffer; + ATEN2011_port->bulk_in_endpoint = port->bulk_in_endpointAddress; + ATEN2011_port->read_urb = port->read_urb; + ATEN2011_port->bulk_out_endpoint = port->bulk_out_endpointAddress; + + minor = port->serial->minor; + if (minor == SERIAL_TTY_NO_MINOR) + minor = 0; + + /* set up our bulk in urb */ + if ((ATEN2011_serial->ATEN2011_spectrum_2or4ports == 2) + && (((__u16) port->number - (__u16) (minor)) != 0)) { + usb_fill_bulk_urb(ATEN2011_port->read_urb, serial->dev, + usb_rcvbulkpipe(serial->dev, + (port-> + bulk_in_endpointAddress + + 2)), port->bulk_in_buffer, + ATEN2011_port->read_urb-> + transfer_buffer_length, + ATEN2011_bulk_in_callback, ATEN2011_port); + } else + usb_fill_bulk_urb(ATEN2011_port->read_urb, + serial->dev, + usb_rcvbulkpipe(serial->dev, + port-> + bulk_in_endpointAddress), + port->bulk_in_buffer, + ATEN2011_port->read_urb-> + transfer_buffer_length, + ATEN2011_bulk_in_callback, ATEN2011_port); + + dbg("ATEN2011_open: bulkin endpoint is %d", + port->bulk_in_endpointAddress); + response = usb_submit_urb(ATEN2011_port->read_urb, GFP_KERNEL); + if (response) { + err("%s - Error %d submitting control urb", __func__, + response); + } + + /* initialize our wait queues */ + init_waitqueue_head(&ATEN2011_port->wait_chase); + init_waitqueue_head(&ATEN2011_port->wait_command); + + /* initialize our icount structure */ + memset(&(ATEN2011_port->icount), 0x00, sizeof(ATEN2011_port->icount)); + + /* initialize our port settings */ + ATEN2011_port->shadowMCR = MCR_MASTER_IE; /* Must set to enable ints! */ + ATEN2011_port->chaseResponsePending = 0; + /* send a open port command */ + ATEN2011_port->open = 1; + /* ATEN2011_change_port_settings(ATEN2011_port,old_termios); */ + /* Setup termios */ + ATEN2011_set_termios(tty, port, &tmp_termios); + ATEN2011_port->icount.tx = 0; + ATEN2011_port->icount.rx = 0; + + dbg("usb_serial serial:%x ATEN2011_port:%x\nATEN2011_serial:%x usb_serial_port port:%x", + (unsigned int)serial, (unsigned int)ATEN2011_port, + (unsigned int)ATEN2011_serial, (unsigned int)port); + + return 0; + +} + +static int ATEN2011_chars_in_buffer(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + int i; + int chars = 0; + struct ATENINTL_port *ATEN2011_port; + + /* dbg("%s"," ATEN2011_chars_in_buffer:entering ..........."); */ + + ATEN2011_port = usb_get_serial_port_data(port); + if (ATEN2011_port == NULL) { + dbg("%s", "ATEN2011_break:leaving ..........."); + return -1; + } + + for (i = 0; i < NUM_URBS; ++i) + if (ATEN2011_port->write_urb_pool[i]->status == -EINPROGRESS) + chars += URB_TRANSFER_BUFFER_SIZE; + + dbg("%s - returns %d", __func__, chars); + return chars; + +} + +static void ATEN2011_block_until_tx_empty(struct tty_struct *tty, + struct ATENINTL_port *ATEN2011_port) +{ + int timeout = HZ / 10; + int wait = 30; + int count; + + while (1) { + count = ATEN2011_chars_in_buffer(tty); + + /* Check for Buffer status */ + if (count <= 0) + return; + + /* Block the thread for a while */ + interruptible_sleep_on_timeout(&ATEN2011_port->wait_chase, + timeout); + + /* No activity.. count down section */ + wait--; + if (wait == 0) { + dbg("%s - TIMEOUT", __func__); + return; + } else { + /* Reset timout value back to seconds */ + wait = 30; + } + } +} + +static void ATEN2011_close(struct tty_struct *tty, struct usb_serial_port *port, + struct file *filp) +{ + struct usb_serial *serial; + struct ATENINTL_serial *ATEN2011_serial; + struct ATENINTL_port *ATEN2011_port; + int no_urbs; + __u16 Data; + + dbg("%s", "ATEN2011_close:entering..."); + serial = port->serial; + + /* take the Adpater and port's private data */ + ATEN2011_serial = usb_get_serial_data(serial); + ATEN2011_port = usb_get_serial_port_data(port); + if ((ATEN2011_serial == NULL) || (ATEN2011_port == NULL)) + return; + + if (serial->dev) { + /* flush and block(wait) until tx is empty */ + ATEN2011_block_until_tx_empty(tty, ATEN2011_port); + } + /* kill the ports URB's */ + for (no_urbs = 0; no_urbs < NUM_URBS; no_urbs++) + usb_kill_urb(ATEN2011_port->write_urb_pool[no_urbs]); + /* Freeing Write URBs */ + for (no_urbs = 0; no_urbs < NUM_URBS; ++no_urbs) { + kfree(ATEN2011_port->write_urb_pool[no_urbs]->transfer_buffer); + usb_free_urb(ATEN2011_port->write_urb_pool[no_urbs]); + } + /* While closing port, shutdown all bulk read, write * + * and interrupt read if they exists */ + if (serial->dev) { + if (ATEN2011_port->write_urb) { + dbg("%s", "Shutdown bulk write"); + usb_kill_urb(ATEN2011_port->write_urb); + } + if (ATEN2011_port->read_urb) { + dbg("%s", "Shutdown bulk read"); + usb_kill_urb(ATEN2011_port->read_urb); + } + if ((&ATEN2011_port->control_urb)) { + dbg("%s", "Shutdown control read"); + /* usb_kill_urb (ATEN2011_port->control_urb); */ + + } + } + /* if(ATEN2011_port->ctrl_buf != NULL) */ + /* kfree(ATEN2011_port->ctrl_buf); */ + /* decrement the no.of open ports counter of an individual USB-serial adapter. */ + ATEN2011_serial->NoOfOpenPorts--; + dbg("NoOfOpenPorts in close%d:in port%d", + ATEN2011_serial->NoOfOpenPorts, port->number); + if (ATEN2011_serial->NoOfOpenPorts == 0) { + /* stop the stus polling here */ + ATEN2011_serial->status_polling_started = 0; + if (ATEN2011_serial->interrupt_read_urb) { + dbg("%s", "Shutdown interrupt_read_urb"); + /* ATEN2011_serial->interrupt_in_buffer=NULL; */ + /* usb_kill_urb (ATEN2011_serial->interrupt_read_urb); */ + } + } + if (ATEN2011_port->write_urb) { + /* if this urb had a transfer buffer already (old tx) free it */ + kfree(ATEN2011_port->write_urb->transfer_buffer); + usb_free_urb(ATEN2011_port->write_urb); + } + + /* clear the MCR & IER */ + Data = 0x00; + set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + Data = 0x00; + set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); + + ATEN2011_port->open = 0; + dbg("%s", "Leaving ............"); + +} + +static void ATEN2011_block_until_chase_response(struct tty_struct *tty, + struct ATENINTL_port + *ATEN2011_port) +{ + int timeout = 1 * HZ; + int wait = 10; + int count; + + while (1) { + count = ATEN2011_chars_in_buffer(tty); + + /* Check for Buffer status */ + if (count <= 0) { + ATEN2011_port->chaseResponsePending = 0; + return; + } + + /* Block the thread for a while */ + interruptible_sleep_on_timeout(&ATEN2011_port->wait_chase, + timeout); + /* No activity.. count down section */ + wait--; + if (wait == 0) { + dbg("%s - TIMEOUT", __func__); + return; + } else { + /* Reset timout value back to seconds */ + wait = 10; + } + } + +} + +static void ATEN2011_break(struct tty_struct *tty, int break_state) +{ + struct usb_serial_port *port = tty->driver_data; + unsigned char data; + struct usb_serial *serial; + struct ATENINTL_serial *ATEN2011_serial; + struct ATENINTL_port *ATEN2011_port; + + dbg("%s", "Entering ..........."); + dbg("ATEN2011_break: Start"); + + serial = port->serial; + + ATEN2011_serial = usb_get_serial_data(serial); + ATEN2011_port = usb_get_serial_port_data(port); + + if ((ATEN2011_serial == NULL) || (ATEN2011_port == NULL)) + return; + + /* flush and chase */ + ATEN2011_port->chaseResponsePending = 1; + + if (serial->dev) { + /* flush and block until tx is empty */ + ATEN2011_block_until_chase_response(tty, ATEN2011_port); + } + + if (break_state == -1) + data = ATEN2011_port->shadowLCR | LCR_SET_BREAK; + else + data = ATEN2011_port->shadowLCR & ~LCR_SET_BREAK; + + ATEN2011_port->shadowLCR = data; + dbg("ATEN2011_break ATEN2011_port->shadowLCR is %x", + ATEN2011_port->shadowLCR); + set_uart_reg(port, LINE_CONTROL_REGISTER, ATEN2011_port->shadowLCR); + + return; +} + +static int ATEN2011_write_room(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + int i; + int room = 0; + struct ATENINTL_port *ATEN2011_port; + + ATEN2011_port = usb_get_serial_port_data(port); + if (ATEN2011_port == NULL) { + dbg("%s", "ATEN2011_break:leaving ..........."); + return -1; + } + + for (i = 0; i < NUM_URBS; ++i) + if (ATEN2011_port->write_urb_pool[i]->status != -EINPROGRESS) + room += URB_TRANSFER_BUFFER_SIZE; + + dbg("%s - returns %d", __func__, room); + return room; + +} + +static int ATEN2011_write(struct tty_struct *tty, struct usb_serial_port *port, + const unsigned char *data, int count) +{ + int status; + int i; + int bytes_sent = 0; + int transfer_size; + int minor; + + struct ATENINTL_port *ATEN2011_port; + struct usb_serial *serial; + struct ATENINTL_serial *ATEN2011_serial; + struct urb *urb; + const unsigned char *current_position = data; + unsigned char *data1; + dbg("%s", "entering ..........."); + + serial = port->serial; + + ATEN2011_port = usb_get_serial_port_data(port); + if (ATEN2011_port == NULL) { + dbg("%s", "ATEN2011_port is NULL"); + return -1; + } + + ATEN2011_serial = usb_get_serial_data(serial); + if (ATEN2011_serial == NULL) { + dbg("%s", "ATEN2011_serial is NULL"); + return -1; + } + + /* try to find a free urb in the list */ + urb = NULL; + + for (i = 0; i < NUM_URBS; ++i) { + if (ATEN2011_port->write_urb_pool[i]->status != -EINPROGRESS) { + urb = ATEN2011_port->write_urb_pool[i]; + dbg("URB:%d", i); + break; + } + } + + if (urb == NULL) { + dbg("%s - no more free urbs", __func__); + goto exit; + } + + if (urb->transfer_buffer == NULL) { + urb->transfer_buffer = + kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL); + + if (urb->transfer_buffer == NULL) { + err("%s no more kernel memory...", __func__); + goto exit; + } + } + transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE); + + memcpy(urb->transfer_buffer, current_position, transfer_size); + /* usb_serial_debug_data (__FILE__, __func__, transfer_size, urb->transfer_buffer); */ + + /* fill urb with data and submit */ + minor = port->serial->minor; + if (minor == SERIAL_TTY_NO_MINOR) + minor = 0; + if ((ATEN2011_serial->ATEN2011_spectrum_2or4ports == 2) + && (((__u16) port->number - (__u16) (minor)) != 0)) { + usb_fill_bulk_urb(urb, ATEN2011_serial->serial->dev, + usb_sndbulkpipe(ATEN2011_serial->serial->dev, + (port-> + bulk_out_endpointAddress) + + 2), urb->transfer_buffer, + transfer_size, + ATEN2011_bulk_out_data_callback, + ATEN2011_port); + } else + + usb_fill_bulk_urb(urb, + ATEN2011_serial->serial->dev, + usb_sndbulkpipe(ATEN2011_serial->serial->dev, + port-> + bulk_out_endpointAddress), + urb->transfer_buffer, transfer_size, + ATEN2011_bulk_out_data_callback, + ATEN2011_port); + + data1 = urb->transfer_buffer; + dbg("bulkout endpoint is %d", port->bulk_out_endpointAddress); + /* for(i=0;i < urb->actual_length;i++) */ + /* dbg("Data is %c ",data1[i]); */ + + /* send it down the pipe */ + status = usb_submit_urb(urb, GFP_ATOMIC); + + if (status) { + err("%s - usb_submit_urb(write bulk) failed with status = %d", + __func__, status); + bytes_sent = status; + goto exit; + } + bytes_sent = transfer_size; + ATEN2011_port->icount.tx += transfer_size; + dbg("ATEN2011_port->icount.tx is %d:", ATEN2011_port->icount.tx); + +exit: + return bytes_sent; +} + +static void ATEN2011_throttle(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + struct ATENINTL_port *ATEN2011_port; + int status; + + dbg("- port %d", port->number); + + ATEN2011_port = usb_get_serial_port_data(port); + + if (ATEN2011_port == NULL) + return; + + if (!ATEN2011_port->open) { + dbg("%s", "port not opened"); + return; + } + + dbg("%s", "Entering .......... "); + + if (!tty) { + dbg("%s - no tty available", __func__); + return; + } + + /* if we are implementing XON/XOFF, send the stop character */ + if (I_IXOFF(tty)) { + unsigned char stop_char = STOP_CHAR(tty); + status = ATEN2011_write(tty, port, &stop_char, 1); + if (status <= 0) + return; + } + + /* if we are implementing RTS/CTS, toggle that line */ + if (tty->termios->c_cflag & CRTSCTS) { + ATEN2011_port->shadowMCR &= ~MCR_RTS; + status = set_uart_reg(port, MODEM_CONTROL_REGISTER, + ATEN2011_port->shadowMCR); + if (status < 0) + return; + } + + return; +} + +static void ATEN2011_unthrottle(struct tty_struct *tty) +{ + struct usb_serial_port *port = tty->driver_data; + int status; + struct ATENINTL_port *ATEN2011_port = usb_get_serial_port_data(port); + + if (ATEN2011_port == NULL) + return; + + if (!ATEN2011_port->open) { + dbg("%s - port not opened", __func__); + return; + } + + dbg("%s", "Entering .......... "); + + if (!tty) { + dbg("%s - no tty available", __func__); + return; + } + + /* if we are implementing XON/XOFF, send the start character */ + if (I_IXOFF(tty)) { + unsigned char start_char = START_CHAR(tty); + status = ATEN2011_write(tty, port, &start_char, 1); + if (status <= 0) + return; + } + + /* if we are implementing RTS/CTS, toggle that line */ + if (tty->termios->c_cflag & CRTSCTS) { + ATEN2011_port->shadowMCR |= MCR_RTS; + status = set_uart_reg(port, MODEM_CONTROL_REGISTER, + ATEN2011_port->shadowMCR); + if (status < 0) + return; + } + + return; +} + +static int ATEN2011_tiocmget(struct tty_struct *tty, struct file *file) +{ + struct usb_serial_port *port = tty->driver_data; + struct ATENINTL_port *ATEN2011_port; + unsigned int result; + __u16 msr; + __u16 mcr; + /* unsigned int mcr; */ + int status = 0; + ATEN2011_port = usb_get_serial_port_data(port); + + dbg("%s - port %d", __func__, port->number); + + if (ATEN2011_port == NULL) + return -ENODEV; + + status = get_uart_reg(port, MODEM_STATUS_REGISTER, &msr); + status = get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr); + /* mcr = ATEN2011_port->shadowMCR; */ + /* COMMENT2: the Fallowing three line are commented for updating only MSR values */ + result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) + | ((mcr & MCR_RTS) ? TIOCM_RTS : 0) + | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0) + | ((msr & ATEN2011_MSR_CTS) ? TIOCM_CTS : 0) + | ((msr & ATEN2011_MSR_CD) ? TIOCM_CAR : 0) + | ((msr & ATEN2011_MSR_RI) ? TIOCM_RI : 0) + | ((msr & ATEN2011_MSR_DSR) ? TIOCM_DSR : 0); + + dbg("%s - 0x%04X", __func__, result); + + return result; +} + +static int ATEN2011_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear) +{ + struct usb_serial_port *port = tty->driver_data; + struct ATENINTL_port *ATEN2011_port; + unsigned int mcr; + unsigned int status; + + dbg("%s - port %d", __func__, port->number); + + ATEN2011_port = usb_get_serial_port_data(port); + + if (ATEN2011_port == NULL) + return -ENODEV; + + mcr = ATEN2011_port->shadowMCR; + if (clear & TIOCM_RTS) + mcr &= ~MCR_RTS; + if (clear & TIOCM_DTR) + mcr &= ~MCR_DTR; + if (clear & TIOCM_LOOP) + mcr &= ~MCR_LOOPBACK; + + if (set & TIOCM_RTS) + mcr |= MCR_RTS; + if (set & TIOCM_DTR) + mcr |= MCR_DTR; + if (set & TIOCM_LOOP) + mcr |= MCR_LOOPBACK; + + ATEN2011_port->shadowMCR = mcr; + + status = set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr); + if (status < 0) { + dbg("setting MODEM_CONTROL_REGISTER Failed"); + return -1; + } + + return 0; +} + +static void ATEN2011_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, + struct ktermios *old_termios) +{ + int status; + unsigned int cflag; + struct usb_serial *serial; + struct ATENINTL_port *ATEN2011_port; + + dbg("ATEN2011_set_termios: START"); + + serial = port->serial; + + ATEN2011_port = usb_get_serial_port_data(port); + + if (ATEN2011_port == NULL) + return; + + if (!ATEN2011_port->open) { + dbg("%s - port not opened", __func__); + return; + } + + dbg("%s", "setting termios - "); + + cflag = tty->termios->c_cflag; + + dbg("%s - cflag %08x iflag %08x", __func__, + tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag)); + + if (old_termios) { + dbg("%s - old clfag %08x old iflag %08x", __func__, + old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); + } + + dbg("%s - port %d", __func__, port->number); + + /* change the port settings to the new ones specified */ + + ATEN2011_change_port_settings(tty, ATEN2011_port, old_termios); + + if (!ATEN2011_port->read_urb) { + dbg("%s", "URB KILLED !!!!!"); + return; + } + + if (ATEN2011_port->read_urb->status != -EINPROGRESS) { + ATEN2011_port->read_urb->dev = serial->dev; + status = usb_submit_urb(ATEN2011_port->read_urb, GFP_ATOMIC); + if (status) { + dbg + (" usb_submit_urb(read bulk) failed, status = %d", + status); + } + } + return; +} + +static int get_lsr_info(struct tty_struct *tty, + struct ATENINTL_port *ATEN2011_port, + unsigned int __user *value) +{ + int count; + unsigned int result = 0; + + count = ATEN2011_chars_in_buffer(tty); + if (count == 0) { + dbg("%s -- Empty", __func__); + result = TIOCSER_TEMT; + } + + if (copy_to_user(value, &result, sizeof(int))) + return -EFAULT; + return 0; +} + +static int get_number_bytes_avail(struct tty_struct *tty, + struct ATENINTL_port *ATEN2011_port, + unsigned int __user *value) +{ + unsigned int result = 0; + + if (!tty) + return -ENOIOCTLCMD; + + result = tty->read_cnt; + + dbg("%s(%d) = %d", __func__, ATEN2011_port->port->number, result); + if (copy_to_user(value, &result, sizeof(int))) + return -EFAULT; + + return -ENOIOCTLCMD; +} + +static int set_modem_info(struct ATENINTL_port *ATEN2011_port, unsigned int cmd, + unsigned int __user *value) +{ + unsigned int mcr; + unsigned int arg; + __u16 Data; + int status; + struct usb_serial_port *port; + + if (ATEN2011_port == NULL) + return -1; + + port = (struct usb_serial_port *)ATEN2011_port->port; + + mcr = ATEN2011_port->shadowMCR; + + if (copy_from_user(&arg, value, sizeof(int))) + return -EFAULT; + + switch (cmd) { + case TIOCMBIS: + if (arg & TIOCM_RTS) + mcr |= MCR_RTS; + if (arg & TIOCM_DTR) + mcr |= MCR_RTS; + if (arg & TIOCM_LOOP) + mcr |= MCR_LOOPBACK; + break; + + case TIOCMBIC: + if (arg & TIOCM_RTS) + mcr &= ~MCR_RTS; + if (arg & TIOCM_DTR) + mcr &= ~MCR_RTS; + if (arg & TIOCM_LOOP) + mcr &= ~MCR_LOOPBACK; + break; + + case TIOCMSET: + /* turn off the RTS and DTR and LOOPBACK + * and then only turn on what was asked to */ + mcr &= ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK); + mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0); + mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0); + mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0); + break; + } + + ATEN2011_port->shadowMCR = mcr; + + Data = ATEN2011_port->shadowMCR; + status = set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + if (status < 0) { + dbg("setting MODEM_CONTROL_REGISTER Failed"); + return -1; + } + + return 0; +} + +static int get_modem_info(struct ATENINTL_port *ATEN2011_port, + unsigned int __user *value) +{ + unsigned int result = 0; + __u16 msr; + unsigned int mcr = ATEN2011_port->shadowMCR; + int status; + + status = get_uart_reg(ATEN2011_port->port, MODEM_STATUS_REGISTER, &msr); + result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */ + |((mcr & MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */ + |((msr & ATEN2011_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */ + |((msr & ATEN2011_MSR_CD) ? TIOCM_CAR : 0) /* 0x040 */ + |((msr & ATEN2011_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */ + |((msr & ATEN2011_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */ + + dbg("%s -- %x", __func__, result); + + if (copy_to_user(value, &result, sizeof(int))) + return -EFAULT; + return 0; +} + +static int get_serial_info(struct ATENINTL_port *ATEN2011_port, + struct serial_struct __user *retinfo) +{ + struct serial_struct tmp; + + if (ATEN2011_port == NULL) + return -1; + + if (!retinfo) + return -EFAULT; + + memset(&tmp, 0, sizeof(tmp)); + + tmp.type = PORT_16550A; + tmp.line = ATEN2011_port->port->serial->minor; + if (tmp.line == SERIAL_TTY_NO_MINOR) + tmp.line = 0; + tmp.port = ATEN2011_port->port->number; + tmp.irq = 0; + tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ; + tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE; + tmp.baud_base = 9600; + tmp.close_delay = 5 * HZ; + tmp.closing_wait = 30 * HZ; + + if (copy_to_user(retinfo, &tmp, sizeof(*retinfo))) + return -EFAULT; + return 0; +} + +static int ATEN2011_ioctl(struct tty_struct *tty, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct usb_serial_port *port = tty->driver_data; + struct ATENINTL_port *ATEN2011_port; + struct async_icount cnow; + struct async_icount cprev; + struct serial_icounter_struct icount; + int ATENret = 0; + unsigned int __user *user_arg = (unsigned int __user *)arg; + + ATEN2011_port = usb_get_serial_port_data(port); + + if (ATEN2011_port == NULL) + return -1; + + dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd); + + switch (cmd) { + /* return number of bytes available */ + + case TIOCINQ: + dbg("%s (%d) TIOCINQ", __func__, port->number); + return get_number_bytes_avail(tty, ATEN2011_port, user_arg); + break; + + case TIOCOUTQ: + dbg("%s (%d) TIOCOUTQ", __func__, port->number); + return put_user(ATEN2011_chars_in_buffer(tty), user_arg); + break; + + case TIOCSERGETLSR: + dbg("%s (%d) TIOCSERGETLSR", __func__, port->number); + return get_lsr_info(tty, ATEN2011_port, user_arg); + return 0; + + case TIOCMBIS: + case TIOCMBIC: + case TIOCMSET: + dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __func__, + port->number); + ATENret = set_modem_info(ATEN2011_port, cmd, user_arg); + return ATENret; + + case TIOCMGET: + dbg("%s (%d) TIOCMGET", __func__, port->number); + return get_modem_info(ATEN2011_port, user_arg); + + case TIOCGSERIAL: + dbg("%s (%d) TIOCGSERIAL", __func__, port->number); + return get_serial_info(ATEN2011_port, + (struct serial_struct __user *)arg); + + case TIOCSSERIAL: + dbg("%s (%d) TIOCSSERIAL", __func__, port->number); + break; + + case TIOCMIWAIT: + dbg("%s (%d) TIOCMIWAIT", __func__, port->number); + cprev = ATEN2011_port->icount; + while (1) { + /* see if a signal did it */ + if (signal_pending(current)) + return -ERESTARTSYS; + cnow = ATEN2011_port->icount; + if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr && + cnow.dcd == cprev.dcd && cnow.cts == cprev.cts) + return -EIO; /* no change => error */ + 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; + } + /* NOTREACHED */ + break; + + case TIOCGICOUNT: + cnow = ATEN2011_port->icount; + icount.cts = cnow.cts; + icount.dsr = cnow.dsr; + icount.rng = cnow.rng; + icount.dcd = cnow.dcd; + icount.rx = cnow.rx; + icount.tx = cnow.tx; + icount.frame = cnow.frame; + icount.overrun = cnow.overrun; + icount.parity = cnow.parity; + icount.brk = cnow.brk; + icount.buf_overrun = cnow.buf_overrun; + + dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__, + port->number, icount.rx, icount.tx); + if (copy_to_user((void __user *)arg, &icount, sizeof(icount))) + return -EFAULT; + return 0; + + default: + break; + } + + return -ENOIOCTLCMD; +} + +static int ATEN2011_calc_baud_rate_divisor(int baudRate, int *divisor, + __u16 *clk_sel_val) +{ + dbg("%s - %d", __func__, baudRate); + + if (baudRate <= 115200) { + *divisor = 115200 / baudRate; + *clk_sel_val = 0x0; + } + if ((baudRate > 115200) && (baudRate <= 230400)) { + *divisor = 230400 / baudRate; + *clk_sel_val = 0x10; + } else if ((baudRate > 230400) && (baudRate <= 403200)) { + *divisor = 403200 / baudRate; + *clk_sel_val = 0x20; + } else if ((baudRate > 403200) && (baudRate <= 460800)) { + *divisor = 460800 / baudRate; + *clk_sel_val = 0x30; + } else if ((baudRate > 460800) && (baudRate <= 806400)) { + *divisor = 806400 / baudRate; + *clk_sel_val = 0x40; + } else if ((baudRate > 806400) && (baudRate <= 921600)) { + *divisor = 921600 / baudRate; + *clk_sel_val = 0x50; + } else if ((baudRate > 921600) && (baudRate <= 1572864)) { + *divisor = 1572864 / baudRate; + *clk_sel_val = 0x60; + } else if ((baudRate > 1572864) && (baudRate <= 3145728)) { + *divisor = 3145728 / baudRate; + *clk_sel_val = 0x70; + } + return 0; +} + +static int ATEN2011_send_cmd_write_baud_rate(struct ATENINTL_port + *ATEN2011_port, int baudRate) +{ + int divisor = 0; + int status; + __u16 Data; + unsigned char number; + __u16 clk_sel_val; + struct usb_serial_port *port; + int minor; + + if (ATEN2011_port == NULL) + return -1; + + port = (struct usb_serial_port *)ATEN2011_port->port; + + dbg("%s", "Entering .......... "); + + minor = ATEN2011_port->port->serial->minor; + if (minor == SERIAL_TTY_NO_MINOR) + minor = 0; + number = ATEN2011_port->port->number - minor; + + dbg("%s - port = %d, baud = %d", __func__, + ATEN2011_port->port->number, baudRate); + /* reset clk_uart_sel in spregOffset */ + if (baudRate > 115200) { +#ifdef HW_flow_control + /* + * NOTE: need to see the pther register to modify + * setting h/w flow control bit to 1; + */ + /* Data = ATEN2011_port->shadowMCR; */ + Data = 0x2b; + ATEN2011_port->shadowMCR = Data; + status = set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + if (status < 0) { + dbg("Writing spreg failed in set_serial_baud"); + return -1; + } +#endif + + } else { +#ifdef HW_flow_control + /* setting h/w flow control bit to 0; */ + /* Data = ATEN2011_port->shadowMCR; */ + Data = 0xb; + ATEN2011_port->shadowMCR = Data; + status = set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + if (status < 0) { + dbg("Writing spreg failed in set_serial_baud"); + return -1; + } +#endif + + } + + if (1) /* baudRate <= 115200) */ { + clk_sel_val = 0x0; + Data = 0x0; + status = + ATEN2011_calc_baud_rate_divisor(baudRate, &divisor, + &clk_sel_val); + status = get_reg_sync(port, ATEN2011_port->SpRegOffset, &Data); + if (status < 0) { + dbg("reading spreg failed in set_serial_baud"); + return -1; + } + Data = (Data & 0x8f) | clk_sel_val; + status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data); + if (status < 0) { + dbg("Writing spreg failed in set_serial_baud"); + return -1; + } + /* Calculate the Divisor */ + + if (status) { + err("%s - bad baud rate", __func__); + dbg("%s", "bad baud rate"); + return status; + } + /* Enable access to divisor latch */ + Data = ATEN2011_port->shadowLCR | SERIAL_LCR_DLAB; + ATEN2011_port->shadowLCR = Data; + set_uart_reg(port, LINE_CONTROL_REGISTER, Data); + + /* Write the divisor */ + Data = (unsigned char)(divisor & 0xff); + dbg("set_serial_baud Value to write DLL is %x", Data); + set_uart_reg(port, DIVISOR_LATCH_LSB, Data); + + Data = (unsigned char)((divisor & 0xff00) >> 8); + dbg("set_serial_baud Value to write DLM is %x", Data); + set_uart_reg(port, DIVISOR_LATCH_MSB, Data); + + /* Disable access to divisor latch */ + Data = ATEN2011_port->shadowLCR & ~SERIAL_LCR_DLAB; + ATEN2011_port->shadowLCR = Data; + set_uart_reg(port, LINE_CONTROL_REGISTER, Data); + + } + + return status; +} + +static void ATEN2011_change_port_settings(struct tty_struct *tty, + struct ATENINTL_port *ATEN2011_port, + struct ktermios *old_termios) +{ + int baud; + unsigned cflag; + unsigned iflag; + __u8 lData; + __u8 lParity; + __u8 lStop; + int status; + __u16 Data; + struct usb_serial_port *port; + struct usb_serial *serial; + + if (ATEN2011_port == NULL) + return; + + port = (struct usb_serial_port *)ATEN2011_port->port; + + serial = port->serial; + + dbg("%s - port %d", __func__, ATEN2011_port->port->number); + + if (!ATEN2011_port->open) { + dbg("%s - port not opened", __func__); + return; + } + + if ((!tty) || (!tty->termios)) { + dbg("%s - no tty structures", __func__); + return; + } + + dbg("%s", "Entering .......... "); + + lData = LCR_BITS_8; + lStop = LCR_STOP_1; + lParity = LCR_PAR_NONE; + + cflag = tty->termios->c_cflag; + iflag = tty->termios->c_iflag; + + /* Change the number of bits */ + + /* COMMENT1: the below Line"if(cflag & CSIZE)" is added for the errors we get for serial loop data test i.e serial_loopback.pl -v */ + /* if(cflag & CSIZE) */ + { + switch (cflag & CSIZE) { + case CS5: + lData = LCR_BITS_5; + break; + + case CS6: + lData = LCR_BITS_6; + break; + + case CS7: + lData = LCR_BITS_7; + break; + default: + case CS8: + lData = LCR_BITS_8; + break; + } + } + /* Change the Parity bit */ + if (cflag & PARENB) { + if (cflag & PARODD) { + lParity = LCR_PAR_ODD; + dbg("%s - parity = odd", __func__); + } else { + lParity = LCR_PAR_EVEN; + dbg("%s - parity = even", __func__); + } + + } else { + dbg("%s - parity = none", __func__); + } + + if (cflag & CMSPAR) + lParity = lParity | 0x20; + + /* Change the Stop bit */ + if (cflag & CSTOPB) { + lStop = LCR_STOP_2; + dbg("%s - stop bits = 2", __func__); + } else { + lStop = LCR_STOP_1; + dbg("%s - stop bits = 1", __func__); + } + + /* Update the LCR with the correct value */ + ATEN2011_port->shadowLCR &= + ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); + ATEN2011_port->shadowLCR |= (lData | lParity | lStop); + + dbg + ("ATEN2011_change_port_settings ATEN2011_port->shadowLCR is %x", + ATEN2011_port->shadowLCR); + /* Disable Interrupts */ + Data = 0x00; + set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); + + Data = 0x00; + set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); + + Data = 0xcf; + set_uart_reg(port, FIFO_CONTROL_REGISTER, Data); + + /* Send the updated LCR value to the ATEN2011 */ + Data = ATEN2011_port->shadowLCR; + + set_uart_reg(port, LINE_CONTROL_REGISTER, Data); + + Data = 0x00b; + ATEN2011_port->shadowMCR = Data; + set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + Data = 0x00b; + set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + + /* set up the MCR register and send it to the ATEN2011 */ + + ATEN2011_port->shadowMCR = MCR_MASTER_IE; + if (cflag & CBAUD) + ATEN2011_port->shadowMCR |= (MCR_DTR | MCR_RTS); + + if (cflag & CRTSCTS) + ATEN2011_port->shadowMCR |= (MCR_XON_ANY); + else + ATEN2011_port->shadowMCR &= ~(MCR_XON_ANY); + + Data = ATEN2011_port->shadowMCR; + set_uart_reg(port, MODEM_CONTROL_REGISTER, Data); + + /* Determine divisor based on baud rate */ + baud = tty_get_baud_rate(tty); + + if (!baud) { + /* pick a default, any default... */ + dbg("%s", "Picked default baud..."); + baud = 9600; + } + + dbg("%s - baud rate = %d", __func__, baud); + status = ATEN2011_send_cmd_write_baud_rate(ATEN2011_port, baud); + + /* Enable Interrupts */ + Data = 0x0c; + set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data); + + if (ATEN2011_port->read_urb->status != -EINPROGRESS) { + ATEN2011_port->read_urb->dev = serial->dev; + + status = usb_submit_urb(ATEN2011_port->read_urb, GFP_ATOMIC); + + if (status) { + dbg + (" usb_submit_urb(read bulk) failed, status = %d", + status); + } + } + dbg + ("ATEN2011_change_port_settings ATEN2011_port->shadowLCR is End %x", + ATEN2011_port->shadowLCR); + + return; +} + +static int ATEN2011_calc_num_ports(struct usb_serial *serial) +{ + + __u16 Data = 0x00; + int ret = 0; + int ATEN2011_2or4ports; + ret = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + ATEN_RDREQ, ATEN_RD_RTYPE, 0, GPIO_REGISTER, + &Data, VENDOR_READ_LENGTH, ATEN_WDR_TIMEOUT); + +/* ghostgum: here is where the problem appears to bet */ +/* Which of the following are needed? */ +/* Greg used the serial->type->num_ports=2 */ +/* But the code in the ATEN2011_open relies on serial->num_ports=2 */ + if ((Data & 0x01) == 0) { + ATEN2011_2or4ports = 2; + serial->type->num_ports = 2; + serial->num_ports = 2; + } + /* else if(serial->interface->cur_altsetting->desc.bNumEndpoints == 9) */ + else { + ATEN2011_2or4ports = 4; + serial->type->num_ports = 4; + serial->num_ports = 4; + + } + + return ATEN2011_2or4ports; +} + +static int ATEN2011_startup(struct usb_serial *serial) +{ + struct ATENINTL_serial *ATEN2011_serial; + struct ATENINTL_port *ATEN2011_port; + struct usb_device *dev; + int i, status; + int minor; + + __u16 Data; + dbg("%s", " ATEN2011_startup :entering.........."); + + if (!serial) { + dbg("%s", "Invalid Handler"); + return -1; + } + + dev = serial->dev; + + dbg("%s", "Entering..."); + + /* create our private serial structure */ + ATEN2011_serial = kzalloc(sizeof(struct ATENINTL_serial), GFP_KERNEL); + if (ATEN2011_serial == NULL) { + err("%s - Out of memory", __func__); + return -ENOMEM; + } + + /* resetting the private structure field values to zero */ + memset(ATEN2011_serial, 0, sizeof(struct ATENINTL_serial)); + + ATEN2011_serial->serial = serial; + /* initilize status polling flag to 0 */ + ATEN2011_serial->status_polling_started = 0; + + usb_set_serial_data(serial, ATEN2011_serial); + ATEN2011_serial->ATEN2011_spectrum_2or4ports = + ATEN2011_calc_num_ports(serial); + /* we set up the pointers to the endpoints in the ATEN2011_open * + * function, as the structures aren't created yet. */ + + /* set up port private structures */ + for (i = 0; i < serial->num_ports; ++i) { + ATEN2011_port = + kmalloc(sizeof(struct ATENINTL_port), GFP_KERNEL); + if (ATEN2011_port == NULL) { + err("%s - Out of memory", __func__); + usb_set_serial_data(serial, NULL); + kfree(ATEN2011_serial); + return -ENOMEM; + } + memset(ATEN2011_port, 0, sizeof(struct ATENINTL_port)); + + /* + * Initialize all port interrupt end point to port 0 + * int endpoint. Our device has only one interrupt end point + * comman to all port + */ + /* serial->port[i]->interrupt_in_endpointAddress = serial->port[0]->interrupt_in_endpointAddress; */ + + ATEN2011_port->port = serial->port[i]; + usb_set_serial_port_data(serial->port[i], ATEN2011_port); + + minor = serial->port[i]->serial->minor; + if (minor == SERIAL_TTY_NO_MINOR) + minor = 0; + ATEN2011_port->port_num = + ((serial->port[i]->number - minor) + 1); + + if (ATEN2011_port->port_num == 1) { + ATEN2011_port->SpRegOffset = 0x0; + ATEN2011_port->ControlRegOffset = 0x1; + ATEN2011_port->DcrRegOffset = 0x4; + } else if ((ATEN2011_port->port_num == 2) + && (ATEN2011_serial->ATEN2011_spectrum_2or4ports == + 4)) { + ATEN2011_port->SpRegOffset = 0x8; + ATEN2011_port->ControlRegOffset = 0x9; + ATEN2011_port->DcrRegOffset = 0x16; + } else if ((ATEN2011_port->port_num == 2) + && (ATEN2011_serial->ATEN2011_spectrum_2or4ports == + 2)) { + ATEN2011_port->SpRegOffset = 0xa; + ATEN2011_port->ControlRegOffset = 0xb; + ATEN2011_port->DcrRegOffset = 0x19; + } else if ((ATEN2011_port->port_num == 3) + && (ATEN2011_serial->ATEN2011_spectrum_2or4ports == + 4)) { + ATEN2011_port->SpRegOffset = 0xa; + ATEN2011_port->ControlRegOffset = 0xb; + ATEN2011_port->DcrRegOffset = 0x19; + } else if ((ATEN2011_port->port_num == 4) + && (ATEN2011_serial->ATEN2011_spectrum_2or4ports == + 4)) { + ATEN2011_port->SpRegOffset = 0xc; + ATEN2011_port->ControlRegOffset = 0xd; + ATEN2011_port->DcrRegOffset = 0x1c; + } + + usb_set_serial_port_data(serial->port[i], ATEN2011_port); + + /* enable rx_disable bit in control register */ + + status = get_reg_sync(serial->port[i], + ATEN2011_port->ControlRegOffset, &Data); + if (status < 0) { + dbg("Reading ControlReg failed status-0x%x", + status); + break; + } else + dbg + ("ControlReg Reading success val is %x, status%d", + Data, status); + Data |= 0x08; /* setting driver done bit */ + Data |= 0x04; /* sp1_bit to have cts change reflect in modem status reg */ + + /* Data |= 0x20; */ /* rx_disable bit */ + status = set_reg_sync(serial->port[i], + ATEN2011_port->ControlRegOffset, Data); + if (status < 0) { + dbg + ("Writing ControlReg failed(rx_disable) status-0x%x", + status); + break; + } else + dbg + ("ControlReg Writing success(rx_disable) status%d", + status); + + /* + * Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 + * and 0x24 in DCR3 + */ + Data = 0x01; + status = set_reg_sync(serial->port[i], + (__u16)(ATEN2011_port->DcrRegOffset + 0), + Data); + if (status < 0) { + dbg("Writing DCR0 failed status-0x%x", status); + break; + } else + dbg("DCR0 Writing success status%d", status); + + Data = 0x05; + status = set_reg_sync(serial->port[i], + (__u16)(ATEN2011_port->DcrRegOffset + 1), + Data); + if (status < 0) { + dbg("Writing DCR1 failed status-0x%x", status); + break; + } else + dbg("DCR1 Writing success status%d", status); + + Data = 0x24; + status = set_reg_sync(serial->port[i], + (__u16)(ATEN2011_port->DcrRegOffset + 2), + Data); + if (status < 0) { + dbg("Writing DCR2 failed status-0x%x", status); + break; + } else + dbg("DCR2 Writing success status%d", status); + + /* write values in clkstart0x0 and clkmulti 0x20 */ + Data = 0x0; + status = set_reg_sync(serial->port[i], CLK_START_VALUE_REGISTER, + Data); + if (status < 0) { + dbg + ("Writing CLK_START_VALUE_REGISTER failed status-0x%x", + status); + break; + } else + dbg + ("CLK_START_VALUE_REGISTER Writing success status%d", + status); + + Data = 0x20; + status = set_reg_sync(serial->port[i], CLK_MULTI_REGISTER, + Data); + if (status < 0) { + dbg + ("Writing CLK_MULTI_REGISTER failed status-0x%x", + status); + break; + } else + dbg("CLK_MULTI_REGISTER Writing success status%d", + status); + + /* Zero Length flag register */ + if ((ATEN2011_port->port_num != 1) + && (ATEN2011_serial->ATEN2011_spectrum_2or4ports == 2)) { + + Data = 0xff; + status = set_reg_sync(serial->port[i], + (__u16)(ZLP_REG1 + ((__u16)ATEN2011_port->port_num)), + Data); + dbg("ZLIP offset%x", + (__u16) (ZLP_REG1 + + ((__u16) ATEN2011_port->port_num))); + if (status < 0) { + dbg + ("Writing ZLP_REG%d failed status-0x%x", + i + 2, status); + break; + } else + dbg("ZLP_REG%d Writing success status%d", + i + 2, status); + } else { + Data = 0xff; + status = set_reg_sync(serial->port[i], + (__u16)(ZLP_REG1 + ((__u16)ATEN2011_port->port_num) - 0x1), + Data); + dbg("ZLIP offset%x", + (__u16) (ZLP_REG1 + + ((__u16) ATEN2011_port->port_num) - + 0x1)); + if (status < 0) { + dbg + ("Writing ZLP_REG%d failed status-0x%x", + i + 1, status); + break; + } else + dbg("ZLP_REG%d Writing success status%d", + i + 1, status); + + } + ATEN2011_port->control_urb = usb_alloc_urb(0, GFP_ATOMIC); + ATEN2011_port->ctrl_buf = kmalloc(16, GFP_KERNEL); + + } + + /* Zero Length flag enable */ + Data = 0x0f; + status = set_reg_sync(serial->port[0], ZLP_REG5, Data); + if (status < 0) { + dbg("Writing ZLP_REG5 failed status-0x%x", status); + return -1; + } else + dbg("ZLP_REG5 Writing success status%d", status); + + /* setting configuration feature to one */ + usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5 * HZ); + return 0; +} + +static void ATEN2011_shutdown(struct usb_serial *serial) +{ + int i; + struct ATENINTL_port *ATEN2011_port; + + /* check for the ports to be closed,close the ports and disconnect */ + + /* free private structure allocated for serial port * + * stop reads and writes on all ports */ + + for (i = 0; i < serial->num_ports; ++i) { + ATEN2011_port = usb_get_serial_port_data(serial->port[i]); + kfree(ATEN2011_port->ctrl_buf); + usb_kill_urb(ATEN2011_port->control_urb); + kfree(ATEN2011_port); + usb_set_serial_port_data(serial->port[i], NULL); + } + + /* free private structure allocated for serial device */ + + kfree(usb_get_serial_data(serial)); + usb_set_serial_data(serial, NULL); +} + +static struct usb_serial_driver aten_serial_driver = { + .driver = { + .owner = THIS_MODULE, + .name = "aten2011", + }, + .description = DRIVER_DESC, + .id_table = id_table, + .open = ATEN2011_open, + .close = ATEN2011_close, + .write = ATEN2011_write, + .write_room = ATEN2011_write_room, + .chars_in_buffer = ATEN2011_chars_in_buffer, + .throttle = ATEN2011_throttle, + .unthrottle = ATEN2011_unthrottle, + .calc_num_ports = ATEN2011_calc_num_ports, + + .ioctl = ATEN2011_ioctl, + .set_termios = ATEN2011_set_termios, + .break_ctl = ATEN2011_break, + .tiocmget = ATEN2011_tiocmget, + .tiocmset = ATEN2011_tiocmset, + .attach = ATEN2011_startup, + .shutdown = ATEN2011_shutdown, + .read_bulk_callback = ATEN2011_bulk_in_callback, + .read_int_callback = ATEN2011_interrupt_callback, +}; + +static struct usb_driver aten_driver = { + .name = "aten2011", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table, +}; + +static int __init aten_init(void) +{ + int retval; + + /* Register with the usb serial */ + retval = usb_serial_register(&aten_serial_driver); + if (retval) + return retval; + + printk(KERN_INFO KBUILD_MODNAME ":" + DRIVER_DESC " " DRIVER_VERSION "\n"); + + /* Register with the usb */ + retval = usb_register(&aten_driver); + if (retval) + usb_serial_deregister(&aten_serial_driver); + + return retval; +} + +static void __exit aten_exit(void) +{ + usb_deregister(&aten_driver); + usb_serial_deregister(&aten_serial_driver); +} + +module_init(aten_init); +module_exit(aten_exit); + +/* Module information */ +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); + +MODULE_PARM_DESC(debug, "Debug enabled or not"); |