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kernel / pub / scm / linux / kernel / git / joro / linux / refs/tags/v2.6.30.7 / . / drivers / staging / uc2322 / aten2011.c
blob: 39d0926d1a9015394043091929bfdbce0ce1ed28 [file] [log] [blame]
/*
* 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_release(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,
.release = ATEN2011_release,
.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");