--- /dev/null
+/*
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+/*************************************************************************
+ *** --------------------------------------------------------------------
+ ***
+ *** Project Name: ATENINTL
+ ***
+ *** Module Name: ATEN2011
+ ***
+ *** File: aten2011.c
+ ***
+ ***
+ *** File Revision: 1.2
+ ***
+ *** Revision Date: 2009-01-16
+ ***
+ ***
+ *** Purpose : It gives an interface between USB to 4 Serial
+ *** and serves as a Serial Driver for the high
+ *** level layers /applications.
+ ***
+ *** Change History:
+ *** Modified from ATEN revision 1.2 for Linux kernel 2.6.26 or later
+ ***
+ *** LEGEND :
+ ***
+ ***
+ *** DBG - Code inserted due to as part of debugging
+ *** DPRINTK - Debug Print statement
+ ***
+ *************************************************************************/
+
+/* all file inclusion goes here */
+
+
+#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/spinlock.h>
+#include <linux/serial.h>
+//#include <linux/ioctl.h>
+#include <linux/usb.h>
+#include <asm/uaccess.h>
+
+
+#define KERNEL_2_6 1
+
+#include <linux/usb/serial.h>
+#include "aten2011.h" /* ATEN2011 Defines */
+#include "aten2011_16C50.h" /* 16C50 UART defines */
+
+/* all defines goes here */
+
+/*
+ * Debug related defines
+ */
+
+/* 1: Enables the debugging -- 0: Disable the debugging */
+
+//#define printk //
+
+#define ATEN_DEBUG 0
+
+#ifdef ATEN_DEBUG
+ static int debug = 0;
+ #define DPRINTK(fmt, args...) printk( "%s: " fmt, __FUNCTION__ , ## args)
+
+#else
+ static int debug = 0;
+ #define DPRINTK(fmt, args...)
+
+#endif
+//#undef DPRINTK
+// #define DPRINTK(fmt, args...)
+
+
+
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "1.3.1"
+#define DRIVER_DESC "ATENINTL 2011 USB Serial Adapter"
+
+/*
+ * Defines used for sending commands to port
+ */
+
+#define WAIT_FOR_EVER (HZ * 0 ) /* timeout urb is wait for ever*/
+#define ATEN_WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */
+
+#define ATEN_PORT1 0x0200
+#define ATEN_PORT2 0x0300
+#define ATEN_VENREG 0x0000
+#define ATEN_MAX_PORT 0x02
+#define ATEN_WRITE 0x0E
+#define ATEN_READ 0x0D
+
+/* 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)
+
+
+int ATEN2011_Thr_cnt;
+//int ATEN2011_spectrum_2or4ports; //this says the number of ports in the device
+//int NoOfOpenPorts;
+
+int RS485mode=0; //set to 1 for RS485 mode and 0 for RS232 mode
+
+static struct usb_serial* ATEN2011_get_usb_serial (struct usb_serial_port *port, const
+char *function);
+static int ATEN2011_serial_paranoia_check (struct usb_serial *serial, const char
+*function);
+static int ATEN2011_port_paranoia_check (struct usb_serial_port *port, const char
+*function);
+
+
+/* setting and get register values */
+static int ATEN2011_set_reg_sync(struct usb_serial_port *port, __u16 reg, __u16 val);
+static int ATEN2011_get_reg_sync(struct usb_serial_port *port, __u16 reg, __u16 * val);
+static int ATEN2011_set_Uart_Reg(struct usb_serial_port *port, __u16 reg, __u16 val);
+static int ATEN2011_get_Uart_Reg(struct usb_serial_port *port, __u16 reg, __u16 * val);
+
+void ATEN2011_Dump_serial_port(struct ATENINTL_port *ATEN2011_port);
+
+/************************************************************************/
+/************************************************************************/
+/* I N T E R F A C E F U N C T I O N S */
+/* I N T E R F A C E F U N C T I O N S */
+/************************************************************************/
+/************************************************************************/
+
+static inline void ATEN2011_set_serial_private(struct usb_serial *serial, struct ATENINTL_serial *data)
+{
+ usb_set_serial_data(serial, (void *)data );
+}
+
+static inline struct ATENINTL_serial * ATEN2011_get_serial_private(struct usb_serial *serial)
+{
+ return (struct ATENINTL_serial*) usb_get_serial_data(serial);
+}
+
+static inline void ATEN2011_set_port_private(struct usb_serial_port *port, struct ATENINTL_port *data)
+{
+ usb_set_serial_port_data(port, (void*)data );
+}
+
+static inline struct ATENINTL_port * ATEN2011_get_port_private(struct usb_serial_port *port)
+{
+ return (struct ATENINTL_port*) usb_get_serial_port_data(port);
+}
+
+/*
+Description:- To set the Control register by calling usb_fill_control_urb function by passing usb_sndctrlpipe function as parameter.
+
+Input Parameters:
+usb_serial_port: Data Structure usb_serialport correponding to that seril port.
+Reg: Register Address
+Val: Value to set in the Register.
+ */
+
+static int ATEN2011_set_reg_sync(struct usb_serial_port *port, __u16 reg, __u16 val)
+{
+ struct usb_device *dev = port->serial->dev;
+ val = val & 0x00ff;
+ DPRINTK("ATEN2011_set_reg_sync offset is %x, value %x\n",reg,val);
+
+
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ATEN_WRREQ,
+ ATEN_WR_RTYPE, val, reg, NULL, 0,ATEN_WDR_TIMEOUT);
+}
+
+
+
+/*
+Description:- To set the Uart register by calling usb_fill_control_urb function by passing usb_rcvctrlpipe function as parameter.
+
+Input Parameters:
+usb_serial_port: Data Structure usb_serialport correponding to that seril port.
+Reg: Register Address
+Val: Value to receive from the Register.
+ */
+
+static int ATEN2011_get_reg_sync(struct usb_serial_port *port, __u16 reg, __u16 * val)
+{
+ struct usb_device *dev = port->serial->dev;
+ int ret=0;
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), ATEN_RDREQ,
+ ATEN_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH,ATEN_WDR_TIMEOUT);
+ DPRINTK("ATEN2011_get_reg_sync offset is %x, return val %x\n",reg,*val);
+ *val = (*val) & 0x00ff;
+ return ret;
+}
+
+
+
+/*
+Description:- To set the Uart register by calling usb_fill_control_urb function by passing usb_sndctrlpipe function as parameter.
+
+Input Parameters:
+usb_serial_port: Data Structure usb_serialport correponding to that seril port.
+Reg: Register Address
+Val: Value to set in the Register.
+ */
+
+static int ATEN2011_set_Uart_Reg(struct usb_serial_port *port, __u16 reg, __u16 val)
+{
+
+
+ struct usb_device *dev = port->serial->dev;
+ struct ATENINTL_serial *ATEN2011_serial;
+ int minor;
+ ATEN2011_serial = ATEN2011_get_serial_private(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(ATEN2011_serial->ATEN2011_spectrum_2or4ports == 4)
+ {
+ val |= (((__u16)port->number - (__u16)(minor))+1)<<8;
+ DPRINTK("ATEN2011_set_Uart_Reg application number is %x\n",val);
+ }
+ else
+ {
+ if( ((__u16)port->number - (__u16)(minor)) == 0)
+ {
+ // val= 0x100;
+ val |= (((__u16)port->number - (__u16)(minor))+1)<<8;
+ DPRINTK("ATEN2011_set_Uart_Reg application number is %x\n",val);
+ }
+ else
+ {
+ // val=0x300;
+ val |= (((__u16)port->number - (__u16)(minor))+2)<<8;
+ DPRINTK("ATEN2011_set_Uart_Reg application number is %x\n",val);
+ }
+ }
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ATEN_WRREQ,
+ ATEN_WR_RTYPE, val, reg, NULL, 0,ATEN_WDR_TIMEOUT);
+
+}
+
+
+/*
+Description:- To set the Control register by calling usb_fill_control_urb function by passing usb_rcvctrlpipe function as parameter.
+
+Input Parameters:
+usb_serial_port: Data Structure usb_serialport correponding to that seril port.
+Reg: Register Address
+Val: Value to receive from the Register.
+ */
+static int ATEN2011_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 *ATEN2011_serial;
+ int minor = port->serial->minor;
+ ATEN2011_serial = ATEN2011_get_serial_private(port->serial);
+ if (minor == SERIAL_TTY_NO_MINOR)
+ minor = 0;
+
+ //DPRINTK("application number is %4x \n",(((__u16)port->number - (__u16)(minor))+1)<<8);
+ /*Wval is same as application number*/
+ if(ATEN2011_serial->ATEN2011_spectrum_2or4ports ==4)
+ {
+ Wval=(((__u16)port->number - (__u16)(minor))+1)<<8;
+ DPRINTK("ATEN2011_get_Uart_Reg application number is %x\n",Wval);
+ }
+ else
+ {
+ if( ((__u16)port->number - (__u16)(minor)) == 0)
+ {
+ // Wval= 0x100;
+ Wval=(((__u16)port->number - (__u16)(minor))+1)<<8;
+ DPRINTK("ATEN2011_get_Uart_Reg application number is %x\n",Wval);
+ }
+ else
+ {
+ // Wval=0x300;
+ Wval=(((__u16)port->number - (__u16)(minor))+2)<<8;
+ DPRINTK("ATEN2011_get_Uart_Reg application number is %x\n",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;
+}
+
+
+
+void ATEN2011_Dump_serial_port(struct ATENINTL_port *ATEN2011_port)
+{
+
+ DPRINTK("***************************************\n");
+ DPRINTK("Application number is %4x\n",ATEN2011_port->AppNum);
+ DPRINTK("SpRegOffset is %2x\n",ATEN2011_port->SpRegOffset);
+ DPRINTK("ControlRegOffset is %2x \n",ATEN2011_port->ControlRegOffset);
+ DPRINTK("DCRRegOffset is %2x \n",ATEN2011_port->DcrRegOffset);
+ //DPRINTK("ClkSelectRegOffset is %2x \n",ATEN2011_port->ClkSelectRegOffset);
+ DPRINTK("***************************************\n");
+
+}
+
+/* all structre defination goes here */
+/****************************************************************************
+ * ATENINTL2011_4port_device
+ * Structure defining ATEN2011, usb serial device
+ ****************************************************************************/
+static struct usb_serial_driver ATENINTL2011_4port_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "ATEN2011",
+ },
+ .description = DRIVER_DESC,
+ .id_table = ATENINTL_port_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,
+
+#ifdef ATENSerialProbe
+ .probe = ATEN2011_serial_probe,
+#endif
+ .ioctl = ATEN2011_ioctl,
+ .set_termios = ATEN2011_set_termios,
+ .break_ctl = ATEN2011_break,
+// .break_ctl = ATEN2011_break_ctl,
+ .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 io_driver = {
+ .name = "ATEN2011",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table_combined,
+};
+
+
+
+/************************************************************************/
+/************************************************************************/
+/* U S B C A L L B A C K F U N C T I O N S */
+/* U S B C A L L B A C K F U N C T I O N S */
+/************************************************************************/
+/************************************************************************/
+
+/*****************************************************************************
+ * ATEN2011_interrupt_callback
+ * this is the callback function for when we have received data on the
+ * interrupt endpoint.
+ * Input : 1 Input
+ * pointer to the URB packet,
+ *
+ *****************************************************************************/
+//#ifdef ATEN2011
+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;
+ //printk("in the function ATEN2011_interrupt_callback Length %d, Data %x \n",urb->actual_length,(unsigned int)urb->transfer_buffer);
+ DPRINTK("%s"," : Entering\n");
+
+ ATEN2011_serial= (struct ATENINTL_serial *)urb->context;
+ if(!urb)// || ATEN2011_serial->status_polling_started == FALSE )
+ {
+ DPRINTK("%s","Invalid Pointer !!!!:\n");
+ return;
+ }
+
+ 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", __FUNCTION__, urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
+ goto exit;
+ }
+ length = urb->actual_length;
+ data = urb->transfer_buffer;
+
+ //ATEN2011_serial= (struct ATENINTL_serial *)urb->context;
+ //serial = ATEN2011_get_usb_serial(port,__FUNCTION__);
+ 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)
+ {
+ DPRINTK("%s \n","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];
+
+ }
+ // printk("%s data is sp1:%x sp2:%x sp3:%x sp4:%x status:%x\n",__FUNCTION__,sp1,sp2,sp3,sp4,st);
+ for(i=0;i<serial->num_ports;i++)
+ {
+ ATEN2011_port = ATEN2011_get_port_private(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 != FALSE)
+ {
+ //printk("%s wval is:(for 2011) %x\n",__FUNCTION__,wval);
+
+ if(sp[i] & 0x01)
+ {
+ DPRINTK("SP%d No Interrupt !!!\n",i);
+ }
+ else
+ {
+ switch(sp[i] & 0x0f)
+ {
+ case SERIAL_IIR_RLS:
+ DPRINTK("Serial Port %d: Receiver status error or ",i);
+ DPRINTK("address bit detected in 9-bit mode\n");
+ ATEN2011_port->MsrLsr=1;
+ ATEN2011_get_reg(ATEN2011_port,wval,LINE_STATUS_REGISTER,&Data);
+ break;
+ case SERIAL_IIR_MS:
+ DPRINTK("Serial Port %d: Modem status change\n",i);
+ ATEN2011_port->MsrLsr=0;
+ ATEN2011_get_reg(ATEN2011_port,wval, MODEM_STATUS_REGISTER, &Data);
+ break;
+ }
+ }
+ }
+
+ }
+exit:
+ if( ATEN2011_serial->status_polling_started == FALSE )
+ return;
+
+ result = usb_submit_urb (urb, GFP_ATOMIC);
+ if (result)
+ {
+ dev_err(&urb->dev->dev, "%s - Error %d submitting interrupt urb\n", __FUNCTION__, result);
+ }
+
+ return;
+
+}
+//#endif
+static void ATEN2011_control_callback(struct urb *urb)
+{
+ unsigned char *data;
+ struct ATENINTL_port *ATEN2011_port;
+ __u8 regval=0x0;
+
+ if(!urb)
+ {
+ DPRINTK("%s","Invalid Pointer !!!!:\n");
+ return;
+ }
+
+ 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", __FUNCTION__, urb->status); return;
+ default:
+ dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
+ goto exit;
+ }
+
+
+ ATEN2011_port = (struct ATENINTL_port *)urb->context;
+
+ DPRINTK("%s urb buffer size is %d\n",__FUNCTION__,urb->actual_length);
+ DPRINTK("%s ATEN2011_port->MsrLsr is %d port %d\n",__FUNCTION__,ATEN2011_port->MsrLsr,ATEN2011_port->port_num);
+ data=urb->transfer_buffer;
+ regval=(__u8)data[0];
+ DPRINTK("%s data is %x\n",__FUNCTION__,regval);
+ if(ATEN2011_port->MsrLsr==0)
+ handle_newMsr(ATEN2011_port,regval);
+ else if(ATEN2011_port->MsrLsr==1)
+ handle_newLsr(ATEN2011_port,regval);
+
+exit:
+ return;
+}
+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;
+}
+int handle_newLsr(struct ATENINTL_port *port,__u8 newLsr)
+{
+ struct async_icount *icount;
+
+ dbg("%s - %02x", __FUNCTION__, 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 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=(struct usb_ctrlrequest *)(buffer);
+ dr=(void *)(buffer + 2);
+ dr->bRequestType = ATEN_RD_RTYPE;
+ dr->bRequest = ATEN_RDREQ;
+ dr->wValue = cpu_to_le16(Wval);//0;
+ 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;
+}
+
+/*****************************************************************************
+ * ATEN2011_bulk_in_callback
+ * this is the callback function for when we have received data on the
+ * bulk in endpoint.
+ * Input : 1 Input
+ * pointer to the URB packet,
+ *
+ *****************************************************************************/
+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)
+ {
+ DPRINTK("%s","Invalid Pointer !!!!:\n");
+ return;
+ }
+
+ if (urb->status)
+ {
+ DPRINTK("nonzero read bulk status received: %d",urb->status);
+// if(urb->status==84)
+ //ThreadState=1;
+ return;
+ }
+
+ ATEN2011_port= (struct ATENINTL_port*)urb->context;
+ if(!ATEN2011_port)
+ {
+ DPRINTK("%s","NULL ATEN2011_port pointer \n");
+ return ;
+ }
+
+ port = (struct usb_serial_port *)ATEN2011_port->port;
+ if (ATEN2011_port_paranoia_check (port, __FUNCTION__))
+ {
+ DPRINTK("%s","Port Paranoia failed \n");
+ return;
+ }
+
+ serial = ATEN2011_get_usb_serial(port,__FUNCTION__);
+ if(!serial)
+ {
+ DPRINTK("%s\n","Bad serial pointer ");
+ return;
+ }
+
+ DPRINTK("%s\n","Entering... \n");
+
+ data = urb->transfer_buffer;
+ ATEN2011_serial = ATEN2011_get_serial_private(serial);
+
+ DPRINTK("%s","Entering ........... \n");
+
+ if (urb->actual_length)
+ {
+//MATRIX
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
+ tty = tty_port_tty_get(&ATEN2011_port->port->port);
+#elif LINUX_VERSION_CODE == KERNEL_VERSION(2,6,27)
+ tty = ATEN2011_port->port->port.tty;
+#else
+ tty = ATEN2011_port->port->tty;
+#endif
+ if (tty)
+ {
+ tty_buffer_request_room(tty, urb->actual_length);
+ tty_insert_flip_string(tty, data, urb->actual_length);
+ DPRINTK(" %s \n",data);
+ tty_flip_buffer_push(tty);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
+ tty_kref_put(tty);
+#endif
+ }
+
+
+ ATEN2011_port->icount.rx += urb->actual_length;
+ DPRINTK("ATEN2011_port->icount.rx is %d:\n",ATEN2011_port->icount.rx);
+//MATRIX
+ }
+
+ if(!ATEN2011_port->read_urb)
+ {
+ DPRINTK("%s","URB KILLED !!!\n");
+ 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)
+ {
+ DPRINTK(" usb_submit_urb(read bulk) failed, status = %d", status);
+ }
+ }
+}
+
+/*****************************************************************************
+ * ATEN2011_bulk_out_data_callback
+ * this is the callback function for when we have finished sending serial data
+ * on the bulk out endpoint.
+ * Input : 1 Input
+ * pointer to the URB packet,
+ *
+ *****************************************************************************/
+static void ATEN2011_bulk_out_data_callback (struct urb *urb)
+{
+ struct ATENINTL_port *ATEN2011_port ;
+ struct tty_struct *tty;
+ if(!urb)
+ {
+ DPRINTK("%s","Invalid Pointer !!!!:\n");
+ return;
+ }
+
+ if (urb->status)
+ {
+ DPRINTK("nonzero write bulk status received:%d\n", urb->status);
+ return;
+ }
+
+ ATEN2011_port = (struct ATENINTL_port *)urb->context;
+ if(!ATEN2011_port)
+ {
+ DPRINTK("%s","NULL ATEN2011_port pointer \n");
+ return ;
+ }
+
+ if (ATEN2011_port_paranoia_check (ATEN2011_port->port, __FUNCTION__))
+ {
+ DPRINTK("%s","Port Paranoia failed \n");
+ return;
+ }
+
+ DPRINTK("%s \n","Entering .........");
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
+ tty = tty_port_tty_get(&ATEN2011_port->port->port);
+#elif LINUX_VERSION_CODE == KERNEL_VERSION(2,6,27)
+ tty = ATEN2011_port->port->port.tty;
+#else
+ tty = ATEN2011_port->port->tty;
+#endif
+
+ if (tty && ATEN2011_port->open)
+ {
+ /* let the tty driver wakeup if it has a special *
+ * write_wakeup function */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) {
+ (tty->ldisc.write_wakeup)(tty);
+ }
+#endif
+
+ /* tell the tty driver that something has changed */
+ wake_up_interruptible(&tty->write_wait);
+ }
+
+ /* Release the Write URB */
+ ATEN2011_port->write_in_progress = FALSE;
+
+//schedule_work(&ATEN2011_port->port->work);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,28)
+ tty_kref_put(tty);
+#endif
+
+}
+
+
+
+
+
+
+/************************************************************************/
+/* D R I V E R T T Y I N T E R F A C E F U N C T I O N S */
+/************************************************************************/
+#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
+
+/*****************************************************************************
+ * SerialOpen
+ * this function is called by the tty driver when a port is opened
+ * If successful, we return 0
+ * Otherwise we return a negative error number.
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static int ATEN2011_open(struct tty_struct *tty, struct usb_serial_port *port, struct file * filp)
+#else
+static int ATEN2011_open(struct usb_serial_port *port, struct file * filp)
+#endif
+{
+ int response;
+ int j;
+ struct usb_serial *serial;
+// struct usb_serial_port *port0;
+ struct urb *urb;
+ __u16 Data;
+ int status;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct ATENINTL_port *ATEN2011_port;
+ struct ktermios tmp_termios;
+ int minor;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ struct tty_struct *tty = NULL;
+#endif
+ if (ATEN2011_port_paranoia_check (port, __FUNCTION__))
+ {
+ DPRINTK("%s","Port Paranoia failed \n");
+ return -ENODEV;
+ }
+
+ //ATEN2011_serial->NoOfOpenPorts++;
+ serial = port->serial;
+
+ if (ATEN2011_serial_paranoia_check (serial, __FUNCTION__))
+ {
+ DPRINTK("%s","Serial Paranoia failed \n");
+ return -ENODEV;
+ }
+
+ ATEN2011_port = ATEN2011_get_port_private(port);
+
+ if (ATEN2011_port == NULL)
+ return -ENODEV;
+/*
+ if (ATEN2011_port->ctrl_buf==NULL)
+ {
+ ATEN2011_port->ctrl_buf = kmalloc(16,GFP_KERNEL);
+ if (ATEN2011_port->ctrl_buf == NULL) {
+ printk(", Can't allocate ctrl buff\n");
+ return -ENOMEM;
+ }
+
+ }
+
+ if(!ATEN2011_port->control_urb)
+ {
+ ATEN2011_port->control_urb=kmalloc(sizeof(struct urb),GFP_KERNEL);
+ }
+*/
+// port0 = serial->port[0];
+
+ ATEN2011_serial = ATEN2011_get_serial_private(serial);
+
+ if (ATEN2011_serial == NULL )//|| port0 == NULL)
+ {
+ return -ENODEV;
+ }
+ // increment the number of opened ports counter here
+ ATEN2011_serial->NoOfOpenPorts++;
+ //printk("the num of ports opend is:%d\n",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.", __FUNCTION__);
+ 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
+
+ status=0;
+ Data=0x0;
+ status=ATEN2011_get_reg_sync(port,ATEN2011_port->SpRegOffset,&Data);
+ if(status<0){
+ DPRINTK("Reading Spreg failed\n");
+ return -1;
+ }
+ Data |= 0x80;
+ status = ATEN2011_set_reg_sync(port,ATEN2011_port->SpRegOffset,Data);
+ if(status<0){
+ DPRINTK("writing Spreg failed\n");
+ return -1;
+ }
+
+ Data &= ~0x80;
+ status = ATEN2011_set_reg_sync(port,ATEN2011_port->SpRegOffset,Data);
+ if(status<0){
+ DPRINTK("writing Spreg failed\n");
+ return -1;
+ }
+
+
+//End of block to be checked
+//**************************CHECK***************************//
+
+ if(RS485mode==0)
+ Data = 0xC0;
+ else
+ Data = 0x00;
+ status=0;
+ status=ATEN2011_set_Uart_Reg(port,SCRATCH_PAD_REGISTER,Data);
+ if(status<0) {
+ DPRINTK("Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status);
+ return -1;
+ }
+ else DPRINTK("SCRATCH_PAD_REGISTER Writing success status%d\n",status);
+
+
+//**************************CHECK***************************//
+
+ status=0;
+ Data=0x0;
+ status=ATEN2011_get_reg_sync(port,ATEN2011_port->ControlRegOffset,&Data);
+ if(status<0){
+ DPRINTK("Reading Controlreg failed\n");
+ return -1;
+ }
+ Data |= 0x08;//Driver done bit
+ /*
+ status = ATEN2011_set_reg_sync(port,ATEN2011_port->ControlRegOffset,Data);
+ if(status<0){
+ DPRINTK("writing Controlreg failed\n");
+ return -1;
+ }
+ */
+ Data |= 0x20;//rx_disable
+ status=0;
+ status = ATEN2011_set_reg_sync(port,ATEN2011_port->ControlRegOffset,Data);
+ if(status<0){
+ DPRINTK("writing Controlreg failed\n");
+ return -1;
+ }
+
+ //do register settings here
+ // Set all regs to the device default values.
+ ////////////////////////////////////
+ // First Disable all interrupts.
+ ////////////////////////////////////
+
+ Data = 0x00;
+ status=0;
+ status = ATEN2011_set_Uart_Reg(port,INTERRUPT_ENABLE_REGISTER,Data);
+ if(status<0){
+ DPRINTK("disableing interrupts failed\n");
+ return -1;
+ }
+ // Set FIFO_CONTROL_REGISTER to the default value
+ Data = 0x00;
+ status=0;
+ status = ATEN2011_set_Uart_Reg(port,FIFO_CONTROL_REGISTER,Data);
+ if(status<0){
+ DPRINTK("Writing FIFO_CONTROL_REGISTER failed\n");
+ return -1;
+ }
+
+ Data = 0xcf; //chk
+ status=0;
+ status = ATEN2011_set_Uart_Reg(port,FIFO_CONTROL_REGISTER,Data);
+ if(status<0){
+ DPRINTK("Writing FIFO_CONTROL_REGISTER failed\n");
+ return -1;
+ }
+
+ Data = 0x03; //LCR_BITS_8
+ status=0;
+ status = ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,Data);
+ ATEN2011_port->shadowLCR=Data;
+
+ Data = 0x0b; // MCR_DTR|MCR_RTS|MCR_MASTER_IE
+ status=0;
+ status = ATEN2011_set_Uart_Reg(port,MODEM_CONTROL_REGISTER,Data);
+ ATEN2011_port->shadowMCR=Data;
+
+#ifdef Check
+ Data = 0x00;
+ status=0;
+ status = ATEN2011_get_Uart_Reg(port,LINE_CONTROL_REGISTER,&Data);
+ ATEN2011_port->shadowLCR=Data;
+
+ Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80
+ status = 0;
+ status = ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,Data);
+
+ Data = 0x0c;
+ status=0;
+ status = ATEN2011_set_Uart_Reg(port,DIVISOR_LATCH_LSB,Data);
+
+ Data = 0x0;
+ status=0;
+ status = ATEN2011_set_Uart_Reg(port,DIVISOR_LATCH_MSB,Data);
+
+ Data = 0x00;
+ status=0;
+ status = ATEN2011_get_Uart_Reg(port,LINE_CONTROL_REGISTER,&Data);
+
+// Data = ATEN2011_port->shadowLCR; //data latch disable
+ Data = Data & ~SERIAL_LCR_DLAB;
+ status = 0;
+ status = ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,Data);
+ ATEN2011_port->shadowLCR=Data;
+#endif
+ //clearing Bulkin and Bulkout Fifo
+ Data = 0x0;
+ status = 0;
+ status = ATEN2011_get_reg_sync(port,ATEN2011_port->SpRegOffset,&Data);
+
+ Data = Data | 0x0c;
+ status = 0;
+ status = ATEN2011_set_reg_sync(port,ATEN2011_port->SpRegOffset,Data);
+
+ Data = Data & ~0x0c;
+ status = 0;
+ status = ATEN2011_set_reg_sync(port,ATEN2011_port->SpRegOffset,Data);
+ //Finally enable all interrupts
+ Data = 0x0;
+ Data = 0x0c;
+ status = 0;
+ status = ATEN2011_set_Uart_Reg(port,INTERRUPT_ENABLE_REGISTER,Data);
+
+ //clearing rx_disable
+ Data = 0x0;
+ status = 0;
+ status = ATEN2011_get_reg_sync(port,ATEN2011_port->ControlRegOffset,&Data);
+ Data = Data & ~0x20;
+ status = 0;
+ status = ATEN2011_set_reg_sync(port,ATEN2011_port->ControlRegOffset,Data);
+
+ // rx_negate
+ Data = 0x0;
+ status = 0;
+ status = ATEN2011_get_reg_sync(port,ATEN2011_port->ControlRegOffset,&Data);
+ Data = Data |0x10;
+ status = 0;
+ status = ATEN2011_set_reg_sync(port,ATEN2011_port->ControlRegOffset,Data);
+
+
+ /* force low_latency on so that our tty_push actually forces *
+ * the data through,otherwise it is scheduled, and with *
+ * high data rates (like with OHCI) data can get lost. */
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ tty = port->tty;
+#endif
+ if (tty)
+ tty->low_latency = 1;
+/*
+ printk("port number is %d \n",port->number);
+ printk("serial number is %d \n",port->serial->minor);
+ printk("Bulkin endpoint is %d \n",port->bulk_in_endpointAddress);
+ printk("BulkOut endpoint is %d \n",port->bulk_out_endpointAddress);
+ printk("Interrupt endpoint is %d \n",port->interrupt_in_endpointAddress);
+ printk("port's number in the device is %d\n",ATEN2011_port->port_num);
+*/
+////////////////////////
+//#ifdef CheckStatusPipe
+/* 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 = TRUE;
+ //if (ATEN2011_serial->interrupt_in_buffer == NULL)
+ // {
+ /* 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;
+ //printk(" interrupt endpoint:%d \n",ATEN2011_serial->interrupt_in_endpoint);
+ 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)
+ {
+ DPRINTK("%s - Error %d submitting interrupt urb", __FUNCTION__, response);
+ }
+ // else
+ // printk(" interrupt URB submitted\n");
+
+ //}
+
+}
+//#endif
+
+
+///////////////////////
+ /* 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.) */
+
+ DPRINTK("port number is %d \n",port->number);
+ DPRINTK("serial number is %d \n",port->serial->minor);
+ DPRINTK("Bulkin endpoint is %d \n",port->bulk_in_endpointAddress);
+ DPRINTK("BulkOut endpoint is %d \n",port->bulk_out_endpointAddress);
+ DPRINTK("Interrupt endpoint is %d \n",port->interrupt_in_endpointAddress);
+ DPRINTK("port's number in the device is %d\n",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);
+
+ DPRINTK("ATEN2011_open: bulkin endpoint is %d\n",port->bulk_in_endpointAddress);
+ response = usb_submit_urb (ATEN2011_port->read_urb,GFP_KERNEL);
+ if (response)
+ {
+ err("%s - Error %d submitting control urb", __FUNCTION__, response);
+ }
+
+ /* initialize our wait queues */
+ init_waitqueue_head(&ATEN2011_port->wait_open);
+ init_waitqueue_head(&ATEN2011_port->wait_chase);
+ init_waitqueue_head(&ATEN2011_port->delta_msr_wait);
+ 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 = FALSE;
+ /* send a open port command */
+ ATEN2011_port->openPending = FALSE;
+ ATEN2011_port->open = TRUE;
+ //ATEN2011_change_port_settings(ATEN2011_port,old_termios);
+ /* Setup termios */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ ATEN2011_set_termios (tty, port, &tmp_termios);
+#else
+ ATEN2011_set_termios (port, &tmp_termios);
+#endif
+ ATEN2011_port->rxBytesAvail = 0x0;
+ ATEN2011_port->icount.tx=0;
+ ATEN2011_port->icount.rx=0;
+
+ DPRINTK("\n\nusb_serial serial:%x ATEN2011_port:%x\nATEN2011_serial:%x usb_serial_port port:%x\n\n",(unsigned int)serial,(unsigned int)ATEN2011_port,(unsigned int)ATEN2011_serial,(unsigned int)port);
+
+
+
+
+ return 0;
+
+}
+
+
+/*****************************************************************************
+ * ATEN2011_close
+ * this function is called by the tty driver when a port is closed
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static void ATEN2011_close(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp)
+#else
+static void ATEN2011_close(struct usb_serial_port *port, struct file *filp)
+#endif
+{
+ struct usb_serial *serial;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct ATENINTL_port *ATEN2011_port;
+ int no_urbs;
+ __u16 Data;
+ //__u16 Data1= 20;
+
+ DPRINTK("%s\n","ATEN2011_close:entering...");
+ /* MATRIX */
+ //ThreadState = 1;
+ /* MATRIX */
+ //printk("Entering... :ATEN2011_close\n");
+ if (ATEN2011_port_paranoia_check (port, __FUNCTION__))
+ {
+ DPRINTK("%s","Port Paranoia failed \n");
+ return;
+ }
+ serial = ATEN2011_get_usb_serial (port, __FUNCTION__);
+ if (!serial)
+ {
+ DPRINTK("%s","Serial Paranoia failed \n");
+ return;
+ }
+ // take the Adpater and port's private data
+ ATEN2011_serial = ATEN2011_get_serial_private(serial);
+ ATEN2011_port = ATEN2011_get_port_private(port);
+ if ((ATEN2011_serial == NULL) || (ATEN2011_port == NULL))
+ {
+ return;
+ }
+ if (serial->dev)
+ {
+ /* flush and block(wait) until tx is empty*/
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ ATEN2011_block_until_tx_empty(tty, ATEN2011_port);
+#else
+ ATEN2011_block_until_tx_empty(ATEN2011_port);
+#endif
+ }
+ // 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)
+ {
+ if (ATEN2011_port->write_urb_pool[no_urbs])
+ {
+ if (ATEN2011_port->write_urb_pool[no_urbs]->transfer_buffer)
+ 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)
+ {
+ DPRINTK("%s","Shutdown bulk write\n");
+ usb_kill_urb (ATEN2011_port->write_urb);
+ }
+ if (ATEN2011_port->read_urb)
+ {
+ DPRINTK("%s","Shutdown bulk read\n");
+ usb_kill_urb (ATEN2011_port->read_urb);
+ }
+ if((&ATEN2011_port->control_urb))
+ {
+ DPRINTK("%s","Shutdown control read\n");
+ // 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--;
+ DPRINTK("NoOfOpenPorts in close%d:in port%d\n",ATEN2011_serial->NoOfOpenPorts,port->number);
+ //printk("the num of ports opend is:%d\n",ATEN2011_serial->NoOfOpenPorts);
+ if(ATEN2011_serial->NoOfOpenPorts==0)
+ {
+ //stop the stus polling here
+ //printk("disabling the status polling flag to FALSE :\n");
+ ATEN2011_serial->status_polling_started = FALSE;
+ if(ATEN2011_serial->interrupt_read_urb)
+ {
+ DPRINTK("%s","Shutdown interrupt_read_urb\n");
+ //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 */
+ if (ATEN2011_port->write_urb->transfer_buffer != NULL)
+ {
+ kfree(ATEN2011_port->write_urb->transfer_buffer);
+ }
+ usb_free_urb(ATEN2011_port->write_urb);
+ }
+ // clear the MCR & IER
+ Data = 0x00;
+ ATEN2011_set_Uart_Reg(port,MODEM_CONTROL_REGISTER,Data);
+ Data = 0x00;
+ ATEN2011_set_Uart_Reg(port,INTERRUPT_ENABLE_REGISTER,Data);
+
+ //ATEN2011_get_Uart_Reg(port,MODEM_CONTROL_REGISTER,&Data1);
+ //printk("value of MCR after closing the port is : 0x%x\n",Data1);
+
+ ATEN2011_port->open = FALSE;
+ ATEN2011_port->closePending = FALSE;
+ ATEN2011_port->openPending = FALSE;
+ DPRINTK("%s \n","Leaving ............");
+
+}
+
+
+/*****************************************************************************
+ * SerialBreak
+ * this function sends a break to the port
+ *****************************************************************************/
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static void ATEN2011_break(struct tty_struct *tty, int break_state)
+#else
+static void ATEN2011_break(struct usb_serial_port *port, int break_state)
+#endif
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ struct usb_serial_port *port = tty->driver_data;
+#endif
+ unsigned char data;
+ struct usb_serial *serial;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct ATENINTL_port *ATEN2011_port;
+
+ DPRINTK("%s \n","Entering ...........");
+ DPRINTK("ATEN2011_break: Start\n");
+
+ if (ATEN2011_port_paranoia_check (port, __FUNCTION__))
+ {
+ DPRINTK("%s","Port Paranoia failed \n");
+ return;
+ }
+
+ serial = ATEN2011_get_usb_serial (port, __FUNCTION__);
+ if (!serial)
+ {
+ DPRINTK("%s","Serial Paranoia failed \n");
+ return;
+ }
+
+ ATEN2011_serial = ATEN2011_get_serial_private(serial);
+ ATEN2011_port = ATEN2011_get_port_private(port);
+
+ if ((ATEN2011_serial == NULL) || (ATEN2011_port == NULL))
+ {
+ return;
+ }
+
+ /* flush and chase */
+ ATEN2011_port->chaseResponsePending = TRUE;
+
+ if (serial->dev)
+ {
+
+ /* flush and block until tx is empty*/
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ ATEN2011_block_until_chase_response(tty, ATEN2011_port);
+#else
+ ATEN2011_block_until_chase_response(ATEN2011_port);
+#endif
+ }
+
+ if(break_state == -1)
+ {
+ data = ATEN2011_port->shadowLCR | LCR_SET_BREAK;
+ }
+ else
+ {
+ data = ATEN2011_port->shadowLCR & ~LCR_SET_BREAK;
+ }
+
+ ATEN2011_port->shadowLCR = data;
+ DPRINTK("ATEN2011_break ATEN2011_port->shadowLCR is %x\n",ATEN2011_port->shadowLCR);
+ ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,ATEN2011_port->shadowLCR);
+
+ return;
+}
+
+
+/************************************************************************
+ *
+ * ATEN2011_block_until_chase_response
+ *
+ * This function will block the close until one of the following:
+ * 1. Response to our Chase comes from ATEN2011
+ * 2. A timout of 10 seconds without activity has expired
+ * (1K of ATEN2011 data @ 2400 baud ==> 4 sec to empty)
+ *
+ ************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static void ATEN2011_block_until_chase_response(struct tty_struct *tty, struct ATENINTL_port *ATEN2011_port)
+#else
+static void ATEN2011_block_until_chase_response(struct ATENINTL_port *ATEN2011_port)
+#endif
+{
+ int timeout = 1*HZ;
+ int wait = 10;
+ int count ;
+
+
+ while (1)
+ {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ count = ATEN2011_chars_in_buffer(tty);
+#else
+ count = ATEN2011_chars_in_buffer(ATEN2011_port->port);
+#endif
+
+ /* Check for Buffer status */
+ if(count<=0)
+ {
+ ATEN2011_port->chaseResponsePending = FALSE;
+ 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", __FUNCTION__);
+ return;
+ }
+ else
+ {
+ /* Reset timout value back to seconds */
+ wait = 10;
+ }
+ }
+
+}
+
+
+/************************************************************************
+ *
+ * ATEN2011_block_until_tx_empty
+ *
+ * This function will block the close until one of the following:
+ * 1. TX count are 0
+ * 2. The ATEN2011 has stopped
+ * 3. A timout of 3 seconds without activity has expired
+ *
+ ************************************************************************/
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static void ATEN2011_block_until_tx_empty(struct tty_struct *tty, struct ATENINTL_port *ATEN2011_port)
+#else
+static void ATEN2011_block_until_tx_empty(struct ATENINTL_port *ATEN2011_port)
+#endif
+{
+ int timeout = HZ/10;
+ int wait = 30;
+ int count;
+
+ while (1)
+ {
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ count = ATEN2011_chars_in_buffer(tty);
+#else
+ count = ATEN2011_chars_in_buffer(ATEN2011_port->port);
+#endif
+
+ /* 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", __FUNCTION__);
+ return;
+ }
+ else
+ {
+ /* Reset timout value back to seconds */
+ wait = 30;
+ }
+ }
+}
+
+/*****************************************************************************
+ * ATEN2011_write_room
+ * this function is called by the tty driver when it wants to know how many
+ * bytes of data we can accept for a specific port.
+ * If successful, we return the amount of room that we have for this port
+ * Otherwise we return a negative error number.
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static int ATEN2011_write_room (struct tty_struct *tty)
+#else
+static int ATEN2011_write_room (struct usb_serial_port *port)
+#endif
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ struct usb_serial_port *port = tty->driver_data;
+#endif
+ int i;
+ int room = 0;
+ struct ATENINTL_port *ATEN2011_port;
+
+
+// DPRINTK("%s \n"," ATEN2011_write_room:entering ...........");
+
+ if(ATEN2011_port_paranoia_check(port,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid port \n");
+ DPRINTK("%s \n"," ATEN2011_write_room:leaving ...........");
+ return -1;
+ }
+
+ ATEN2011_port = ATEN2011_get_port_private(port);
+ if (ATEN2011_port == NULL)
+ {
+ DPRINTK("%s \n","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", __FUNCTION__, room);
+ return (room);
+
+}
+
+
+/*****************************************************************************
+ * ATEN2011_chars_in_buffer
+ * this function is called by the tty driver when it wants to know how many
+ * bytes of data we currently have outstanding in the port (data that has
+ * been written, but hasn't made it out the port yet)
+ * If successful, we return the number of bytes left to be written in the
+ * system,
+ * Otherwise we return a negative error number.
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static int ATEN2011_chars_in_buffer(struct tty_struct *tty)
+#else
+static int ATEN2011_chars_in_buffer(struct usb_serial_port *port)
+#endif
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ struct usb_serial_port *port = tty->driver_data;
+#endif
+ int i;
+ int chars = 0;
+ struct ATENINTL_port *ATEN2011_port;
+
+ //DPRINTK("%s \n"," ATEN2011_chars_in_buffer:entering ...........");
+
+ if(ATEN2011_port_paranoia_check(port,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid port \n");
+ return -1;
+ }
+
+ ATEN2011_port = ATEN2011_get_port_private(port);
+ if (ATEN2011_port == NULL)
+ {
+ DPRINTK("%s \n","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", __FUNCTION__, chars);
+ return (chars);
+
+}
+
+
+/*****************************************************************************
+ * SerialWrite
+ * this function is called by the tty driver when data should be written to
+ * the port.
+ * If successful, we return the number of bytes written, otherwise we
+ * return a negative error number.
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static int ATEN2011_write (struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *data, int count)
+#else
+static int ATEN2011_write (struct usb_serial_port *port, const unsigned char *data, int count)
+#endif
+{
+ int status;
+ int i;
+ int bytes_sent = 0;
+ int transfer_size;
+ int from_user=0;
+ int minor;
+
+ struct ATENINTL_port *ATEN2011_port;
+ struct usb_serial *serial;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct urb *urb;
+ //__u16 Data;
+ const unsigned char *current_position = data;
+ unsigned char * data1;
+ DPRINTK("%s \n","entering ...........");
+ //DPRINTK("ATEN2011_write: ATEN2011_port->shadowLCR is %x\n",ATEN2011_port->shadowLCR);
+
+ #ifdef NOTATEN2011
+ Data = 0x00;
+ status=0;
+ status = ATEN2011_get_Uart_Reg(port,LINE_CONTROL_REGISTER,&Data);
+ ATEN2011_port->shadowLCR = Data;
+ DPRINTK("ATEN2011_write: LINE_CONTROL_REGISTER is %x\n",Data);
+ DPRINTK("ATEN2011_write: ATEN2011_port->shadowLCR is %x\n",ATEN2011_port->shadowLCR);
+
+ //Data = 0x03;
+ //status = ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,Data);
+ //ATEN2011_port->shadowLCR=Data;//Need to add later
+
+ Data |= SERIAL_LCR_DLAB; //data latch enable in LCR 0x80
+ status = 0;
+ status = ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,Data);
+
+ //Data = 0x0c;
+ //status = ATEN2011_set_Uart_Reg(port,DIVISOR_LATCH_LSB,Data);
+ Data = 0x00;
+ status=0;
+ status = ATEN2011_get_Uart_Reg(port,DIVISOR_LATCH_LSB,&Data);
+ DPRINTK("ATEN2011_write:DLL value is %x\n",Data);
+
+ Data = 0x0;
+ status=0;
+ status = ATEN2011_get_Uart_Reg(port,DIVISOR_LATCH_MSB,&Data);
+ DPRINTK("ATEN2011_write:DLM value is %x\n",Data);
+
+ Data = Data & ~SERIAL_LCR_DLAB;
+ DPRINTK("ATEN2011_write: ATEN2011_port->shadowLCR is %x\n",ATEN2011_port->shadowLCR);
+ status = 0;
+ status = ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,Data);
+ #endif
+
+ if (ATEN2011_port_paranoia_check (port, __FUNCTION__))
+ {
+ DPRINTK("%s","Port Paranoia failed \n");
+ return -1;
+ }
+
+ serial = port->serial;
+ if (ATEN2011_serial_paranoia_check (serial, __FUNCTION__))
+ {
+ DPRINTK("%s","Serial Paranoia failed \n");
+ return -1;
+ }
+
+ ATEN2011_port = ATEN2011_get_port_private(port);
+ if(ATEN2011_port==NULL)
+ {
+ DPRINTK("%s","ATEN2011_port is NULL\n");
+ return -1;
+ }
+
+ ATEN2011_serial =ATEN2011_get_serial_private(serial);
+ if(ATEN2011_serial==NULL)
+ {
+ DPRINTK("%s","ATEN2011_serial is NULL \n");
+ 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];
+ DPRINTK("\nURB:%d",i);
+ break;
+ }
+ }
+
+ if (urb == NULL)
+ {
+ dbg("%s - no more free urbs", __FUNCTION__);
+ 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...", __FUNCTION__);
+ goto exit;
+ }
+ }
+ transfer_size = min (count, URB_TRANSFER_BUFFER_SIZE);
+
+ if (from_user)
+ {
+ if (copy_from_user (urb->transfer_buffer, current_position, transfer_size)) {
+ bytes_sent = -EFAULT;
+ goto exit;
+ }
+ }
+ else
+ {
+ memcpy (urb->transfer_buffer, current_position, transfer_size);
+ }
+ //usb_serial_debug_data (__FILE__, __FUNCTION__, 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;
+ DPRINTK("\nbulkout endpoint is %d",port->bulk_out_endpointAddress);
+ //for(i=0;i < urb->actual_length;i++)
+ // DPRINTK("Data is %c\n ",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", __FUNCTION__, status);
+ bytes_sent = status;
+ goto exit;
+ }
+ bytes_sent = transfer_size;
+ ATEN2011_port->icount.tx += transfer_size;
+ DPRINTK("ATEN2011_port->icount.tx is %d:\n",ATEN2011_port->icount.tx);
+exit:
+
+ return bytes_sent;
+
+}
+
+
+/*****************************************************************************
+ * SerialThrottle
+ * this function is called by the tty driver when it wants to stop the data
+ * being read from the port.
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static void ATEN2011_throttle(struct tty_struct *tty)
+#else
+static void ATEN2011_throttle(struct usb_serial_port *port)
+#endif
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ struct usb_serial_port *port = tty->driver_data;
+#else
+ struct tty_struct *tty;
+#endif
+ struct ATENINTL_port *ATEN2011_port;
+ int status;
+
+ if(ATEN2011_port_paranoia_check(port,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid port \n");
+ return;
+ }
+
+ DPRINTK("- port %d\n", port->number);
+
+ ATEN2011_port = ATEN2011_get_port_private(port);
+
+ if (ATEN2011_port == NULL)
+ return;
+
+ if (!ATEN2011_port->open)
+ {
+ DPRINTK("%s\n","port not opened");
+ return;
+ }
+
+ DPRINTK("%s","Entering .......... \n");
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ tty = port->tty;
+#endif
+ if (!tty)
+ {
+ dbg ("%s - no tty available", __FUNCTION__);
+ return;
+ }
+
+ /* if we are implementing XON/XOFF, send the stop character */
+ if (I_IXOFF(tty))
+ {
+ unsigned char stop_char = STOP_CHAR(tty);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ status = ATEN2011_write(tty, port, &stop_char, 1); //FC4
+#else
+ status = ATEN2011_write(port, &stop_char, 1); //FC4
+#endif
+ 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=0;
+ status=ATEN2011_set_Uart_Reg(port,MODEM_CONTROL_REGISTER,ATEN2011_port->shadowMCR);
+
+ if (status < 0)
+ {
+ return;
+ }
+ }
+
+ return;
+}
+
+
+/*****************************************************************************
+ * ATEN2011_unthrottle
+ * this function is called by the tty driver when it wants to resume the data
+ * being read from the port (called after SerialThrottle is called)
+ *****************************************************************************/
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static void ATEN2011_unthrottle (struct tty_struct *tty)
+#else
+static void ATEN2011_unthrottle (struct usb_serial_port *port)
+#endif
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ struct usb_serial_port *port = tty->driver_data;
+#else
+ struct tty_struct *tty;
+#endif
+ int status;
+ struct ATENINTL_port *ATEN2011_port = ATEN2011_get_port_private(port);
+
+ if(ATEN2011_port_paranoia_check(port,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid port \n");
+ return;
+ }
+
+ if (ATEN2011_port == NULL)
+ return;
+
+ if (!ATEN2011_port->open) {
+ dbg("%s - port not opened", __FUNCTION__);
+ return;
+ }
+
+ DPRINTK("%s","Entering .......... \n");
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ tty = port->tty;
+#endif
+ if (!tty)
+ {
+ dbg ("%s - no tty available", __FUNCTION__);
+ return;
+ }
+
+ /* if we are implementing XON/XOFF, send the start character */
+ if (I_IXOFF(tty))
+ {
+ unsigned char start_char = START_CHAR(tty);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ status = ATEN2011_write (tty, port, &start_char, 1); //FC4
+#else
+ status = ATEN2011_write (port, &start_char, 1); //FC4
+#endif
+ 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=0;
+ status=ATEN2011_set_Uart_Reg(port,MODEM_CONTROL_REGISTER,ATEN2011_port->shadowMCR);
+ if (status < 0)
+ {
+ return;
+ }
+ }
+
+ return;
+}
+
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static int ATEN2011_tiocmget(struct tty_struct *tty, struct file *file)
+#else
+static int ATEN2011_tiocmget(struct usb_serial_port *port, struct file *file)
+#endif
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ struct usb_serial_port *port = tty->driver_data;
+#endif
+ //struct ti_port *tport = usb_get_serial_port_data(port);
+ struct ATENINTL_port *ATEN2011_port;
+ unsigned int result;
+ __u16 msr;
+ __u16 mcr;
+ //unsigned int mcr;
+ int status=0;
+ ATEN2011_port = ATEN2011_get_port_private(port);
+
+ DPRINTK("%s - port %d", __FUNCTION__, port->number);
+
+ if (ATEN2011_port == NULL)
+ return -ENODEV;
+
+ status=ATEN2011_get_Uart_Reg(port,MODEM_STATUS_REGISTER,&msr);
+ status=ATEN2011_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);
+
+ DPRINTK("%s - 0x%04X", __FUNCTION__, result);
+
+ return result;
+}
+
+
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static int ATEN2011_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
+#else
+static int ATEN2011_tiocmset(struct usb_serial_port *port, struct file *file,
+ unsigned int set, unsigned int clear)
+#endif
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ struct usb_serial_port *port = tty->driver_data;
+#endif
+ struct ATENINTL_port *ATEN2011_port;
+ //struct ti_port *tport = usb_get_serial_port_data(port);
+ unsigned int mcr;
+ unsigned int status;
+
+ DPRINTK("%s - port %d", __FUNCTION__, port->number);
+
+ ATEN2011_port = ATEN2011_get_port_private(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=0;
+ status = ATEN2011_set_Uart_Reg(port,MODEM_CONTROL_REGISTER,mcr);
+ if(status <0)
+ {
+ DPRINTK("setting MODEM_CONTROL_REGISTER Failed\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+
+
+
+
+
+/*****************************************************************************
+ * SerialSetTermios
+ * this function is called by the tty driver when it wants to change the termios structure
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static void ATEN2011_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios)
+#else
+static void ATEN2011_set_termios(struct usb_serial_port *port, struct ktermios *old_termios)
+#endif
+{
+ int status;
+ unsigned int cflag;
+ struct usb_serial *serial;
+ struct ATENINTL_port *ATEN2011_port;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ struct tty_struct *tty;
+#endif
+ DPRINTK("ATEN2011_set_termios: START\n");
+ if(ATEN2011_port_paranoia_check(port,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid port \n");
+ return;
+ }
+
+ serial = port->serial;
+
+ if(ATEN2011_serial_paranoia_check(serial,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid Serial \n");
+ return;
+ }
+
+ ATEN2011_port = ATEN2011_get_port_private(port);
+
+ if (ATEN2011_port == NULL)
+ return;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ tty = port->tty;
+
+ if (!port->tty || !port->tty->termios)
+ {
+ dbg ("%s - no tty or termios", __FUNCTION__);
+ return;
+ }
+#endif
+
+ if (!ATEN2011_port->open)
+ {
+ dbg("%s - port not opened", __FUNCTION__);
+ return;
+ }
+
+ DPRINTK("%s\n","setting termios - ");
+
+ cflag = tty->termios->c_cflag;
+
+ if (!cflag)
+ {
+ DPRINTK("%s %s\n",__FUNCTION__,"cflag is NULL");
+ return;
+ }
+
+ /* check that they really want us to change something */
+ if (old_termios)
+ {
+ if ((cflag == old_termios->c_cflag) &&
+ (RELEVANT_IFLAG(tty->termios->c_iflag) == RELEVANT_IFLAG(old_termios->c_iflag)))
+ {
+ DPRINTK("%s\n","Nothing to change");
+ return;
+ }
+ }
+
+ dbg("%s - clfag %08x iflag %08x", __FUNCTION__,
+ tty->termios->c_cflag,
+ RELEVANT_IFLAG(tty->termios->c_iflag));
+
+ if (old_termios)
+ {
+ dbg("%s - old clfag %08x old iflag %08x", __FUNCTION__,
+ old_termios->c_cflag,
+ RELEVANT_IFLAG(old_termios->c_iflag));
+ }
+
+ dbg("%s - port %d", __FUNCTION__, port->number);
+
+ /* change the port settings to the new ones specified */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ ATEN2011_change_port_settings(tty, ATEN2011_port, old_termios);
+#else
+ ATEN2011_change_port_settings(ATEN2011_port, old_termios);
+#endif
+
+ if(!ATEN2011_port->read_urb)
+ {
+ DPRINTK("%s","URB KILLED !!!!!\n");
+ 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)
+ {
+ DPRINTK(" usb_submit_urb(read bulk) failed, status = %d", status);
+ }
+ }
+ return;
+}
+
+/*
+static void ATEN2011_break_ctl( struct usb_serial_port *port, int break_state )
+{
+ //struct usb_serial *serial = port->serial;
+
+// if (BSA_USB_CMD(BELKIN_SA_SET_BREAK_REQUEST, break_state ? 1 : 0) < 0)
+ // err("Set break_ctl %d", break_state);
+}
+*/
+
+
+
+/*****************************************************************************
+ * get_lsr_info - get line status register info
+ *
+ * Purpose: Let user call ioctl() to get info when the UART physically
+ * is emptied. On bus types like RS485, the transmitter must
+ * release the bus after transmitting. This must be done when
+ * the transmit shift register is empty, not be done when the
+ * transmit holding register is empty. This functionality
+ * allows an RS485 driver to be written in user space.
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static int get_lsr_info(struct tty_struct *tty, struct ATENINTL_port *ATEN2011_port, unsigned int *value)
+#else
+static int get_lsr_info(struct ATENINTL_port *ATEN2011_port, unsigned int *value)
+#endif
+{
+ int count;
+ unsigned int result = 0;
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ count = ATEN2011_chars_in_buffer(tty);
+#else
+ count = ATEN2011_chars_in_buffer(ATEN2011_port->port);
+#endif
+ if(count == 0)
+ {
+ dbg("%s -- Empty", __FUNCTION__);
+ result = TIOCSER_TEMT;
+ }
+
+ if (copy_to_user(value, &result, sizeof(int)))
+ return -EFAULT;
+ return 0;
+}
+
+/*****************************************************************************
+ * get_number_bytes_avail - get number of bytes available
+ *
+ * Purpose: Let user call ioctl to get the count of number of bytes available.
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static int get_number_bytes_avail(struct tty_struct *tty, struct ATENINTL_port *ATEN2011_port, unsigned int *value)
+#else
+static int get_number_bytes_avail(struct ATENINTL_port *ATEN2011_port, unsigned int *value)
+#endif
+{
+ unsigned int result = 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ struct tty_struct *tty = ATEN2011_port->port->tty;
+#endif
+
+ if (!tty)
+ return -ENOIOCTLCMD;
+
+ result = tty->read_cnt;
+
+ dbg("%s(%d) = %d", __FUNCTION__, ATEN2011_port->port->number, result);
+ if (copy_to_user(value, &result, sizeof(int)))
+ return -EFAULT;
+
+ return -ENOIOCTLCMD;
+}
+
+
+/*****************************************************************************
+ * set_modem_info
+ * function to set modem info
+ *****************************************************************************/
+
+static int set_modem_info(struct ATENINTL_port *ATEN2011_port, unsigned int cmd, unsigned int *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;
+ if(ATEN2011_port_paranoia_check(port,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid port \n");
+ return -1;
+ }
+
+ 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=0;
+ status = ATEN2011_set_Uart_Reg(port,MODEM_CONTROL_REGISTER,Data);
+ if(status <0)
+ {
+ DPRINTK("setting MODEM_CONTROL_REGISTER Failed\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+/*****************************************************************************
+ * get_modem_info
+ * function to get modem info
+ *****************************************************************************/
+
+static int get_modem_info(struct ATENINTL_port *ATEN2011_port, unsigned int *value)
+{
+ unsigned int result = 0;
+ __u16 msr;
+ unsigned int mcr = ATEN2011_port->shadowMCR;
+ int status=0;
+ status=ATEN2011_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", __FUNCTION__, result);
+
+ if (copy_to_user(value, &result, sizeof(int)))
+ return -EFAULT;
+ return 0;
+}
+
+/*****************************************************************************
+ * get_serial_info
+ * function to get information about serial port
+ *****************************************************************************/
+
+static int get_serial_info(struct ATENINTL_port *ATEN2011_port, struct serial_struct * 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;
+}
+
+/*****************************************************************************
+ * SerialIoctl
+ * this function handles any ioctl calls to the driver
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static int ATEN2011_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg)
+#else
+static int ATEN2011_ioctl(struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg)
+#endif
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ struct usb_serial_port *port = tty->driver_data;
+#else
+ struct tty_struct *tty;
+#endif
+ struct ATENINTL_port *ATEN2011_port;
+ struct async_icount cnow;
+ struct async_icount cprev;
+ struct serial_icounter_struct icount;
+ int ATENret=0;
+ //int retval;
+ //struct tty_ldisc *ld;
+
+ //printk("%s - port %d, cmd = 0x%x\n", __FUNCTION__, port->number, cmd);
+ if(ATEN2011_port_paranoia_check(port,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid port \n");
+ return -1;
+ }
+
+ ATEN2011_port = ATEN2011_get_port_private(port);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ tty = ATEN2011_port->port->tty;
+#endif
+
+ if (ATEN2011_port == NULL)
+ return -1;
+
+ dbg("%s - port %d, cmd = 0x%x", __FUNCTION__, port->number, cmd);
+
+ switch (cmd)
+ {
+ /* return number of bytes available */
+
+ case TIOCINQ:
+ dbg("%s (%d) TIOCINQ", __FUNCTION__, port->number);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ return get_number_bytes_avail(tty, ATEN2011_port, (unsigned int *) arg);
+#else
+ return get_number_bytes_avail(ATEN2011_port, (unsigned int *) arg);
+#endif
+ break;
+
+ case TIOCOUTQ:
+ dbg("%s (%d) TIOCOUTQ", __FUNCTION__, port->number);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ return put_user(ATEN2011_chars_in_buffer(tty),
+ (int __user *) arg);
+#else
+ return put_user(tty->driver->ops->chars_in_buffer ?
+ tty->driver->ops->chars_in_buffer(tty) : 0,
+ (int __user *) arg);
+#endif
+ break;
+
+ /* //2.6.17 block
+ case TCFLSH:
+ retval = tty_check_change(tty);
+ if (retval)
+ return retval;
+
+ ld = tty_ldisc_ref(tty);
+ switch (arg) {
+ case TCIFLUSH:
+ if (ld && ld->flush_buffer)
+ ld->flush_buffer(tty);
+ break;
+ case TCIOFLUSH:
+ if (ld && ld->flush_buffer)
+ ld->flush_buffer(tty);
+ // fall through
+ case TCOFLUSH:
+ if (tty->driver->flush_buffer)
+ tty->driver->flush_buffer(tty);
+ break;
+ default:
+ tty_ldisc_deref(ld);
+ return -EINVAL;
+ }
+ tty_ldisc_deref(ld);
+ return 0;
+ */
+ case TIOCSERGETLSR:
+ dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number);
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+ return get_lsr_info(tty, ATEN2011_port, (unsigned int *) arg);
+#else
+ return get_lsr_info(ATEN2011_port, (unsigned int *) arg);
+#endif
+ return 0;
+
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, port->number);
+ // printk("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, port->number);
+ ATENret=set_modem_info(ATEN2011_port, cmd, (unsigned int *) arg);
+ // printk(" %s: ret:%d\n",__FUNCTION__,ATENret);
+ return ATENret;
+
+ case TIOCMGET:
+ dbg("%s (%d) TIOCMGET", __FUNCTION__, port->number);
+ return get_modem_info(ATEN2011_port, (unsigned int *) arg);
+
+ case TIOCGSERIAL:
+ dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number);
+ return get_serial_info(ATEN2011_port, (struct serial_struct *) arg);
+
+ case TIOCSSERIAL:
+ dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number);
+ break;
+
+ case TIOCMIWAIT:
+ dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number);
+ cprev = ATEN2011_port->icount;
+ while (1) {
+ //interruptible_sleep_on(&ATEN2011_port->delta_msr_wait);
+ // ATEN2011_port->delta_msr_cond=0;
+ //wait_event_interruptible(ATEN2011_port->delta_msr_wait,(ATEN2011_port->delta_msr_cond==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", __FUNCTION__, port->number, icount.rx, icount.tx );
+ if (copy_to_user((void *)arg, &icount, sizeof(icount)))
+ return -EFAULT;
+ return 0;
+
+ case TIOCEXBAUD:
+ return 0;
+ default:
+ break;
+ }
+
+ return -ENOIOCTLCMD;
+}
+
+
+/*****************************************************************************
+ * ATEN2011_send_cmd_write_baud_rate
+ * this function sends the proper command to change the baud rate of the
+ * specified port.
+ *****************************************************************************/
+
+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;
+ if(ATEN2011_port_paranoia_check(port,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid port \n");
+ return -1;
+ }
+
+ if(ATEN2011_serial_paranoia_check(port->serial,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid Serial \n");
+ return -1;
+ }
+
+
+ DPRINTK("%s","Entering .......... \n");
+
+ 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", __FUNCTION__, 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;
+ status=0;
+ //Data = ATEN2011_port->shadowMCR ;
+ Data = 0x2b;
+ ATEN2011_port->shadowMCR=Data;
+ status=ATEN2011_set_Uart_Reg(port,MODEM_CONTROL_REGISTER,Data);
+ if(status<0)
+ {
+ DPRINTK("Writing spreg failed in set_serial_baud\n");
+ return -1;
+ }
+ #endif
+
+ }
+ else
+ {
+ #ifdef HW_flow_control
+ //setting h/w flow control bit to 0;
+ status=0;
+ //Data = ATEN2011_port->shadowMCR ;
+ Data = 0xb;
+ ATEN2011_port->shadowMCR=Data;
+ status=ATEN2011_set_Uart_Reg(port,MODEM_CONTROL_REGISTER,Data);
+ if(status<0)
+ {
+ DPRINTK("Writing spreg failed in set_serial_baud\n");
+ return -1;
+ }
+
+ #endif
+
+
+ }
+
+
+ if(1)//baudRate <= 115200)
+ {
+ clk_sel_val=0x0;
+ Data=0x0;
+ status=0;
+ status = ATEN2011_calc_baud_rate_divisor (baudRate, &divisor,&clk_sel_val);
+ status= ATEN2011_get_reg_sync(port,ATEN2011_port->SpRegOffset,&Data);
+ if(status<0)
+ {
+ DPRINTK("reading spreg failed in set_serial_baud\n");
+ return -1;
+ }
+ Data = (Data & 0x8f)|clk_sel_val;
+ status=0;
+ status= ATEN2011_set_reg_sync(port,ATEN2011_port->SpRegOffset,Data);
+ if(status<0)
+ {
+ DPRINTK("Writing spreg failed in set_serial_baud\n");
+ return -1;
+ }
+ /* Calculate the Divisor */
+
+
+ if (status)
+ {
+ err("%s - bad baud rate", __FUNCTION__);
+ DPRINTK("%s\n","bad baud rate");
+ return status;
+ }
+ /* Enable access to divisor latch */
+ Data = ATEN2011_port->shadowLCR | SERIAL_LCR_DLAB;
+ ATEN2011_port->shadowLCR = Data;
+ ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,Data);
+
+ /* Write the divisor */
+ Data = LOW8 (divisor);//: commented to test
+ DPRINTK("set_serial_baud Value to write DLL is %x\n",Data);
+ ATEN2011_set_Uart_Reg(port,DIVISOR_LATCH_LSB,Data);
+
+ Data = HIGH8 (divisor); //: commented to test
+ DPRINTK("set_serial_baud Value to write DLM is %x\n",Data);
+ ATEN2011_set_Uart_Reg(port,DIVISOR_LATCH_MSB,Data);
+
+ /* Disable access to divisor latch */
+ Data = ATEN2011_port->shadowLCR & ~SERIAL_LCR_DLAB;
+ ATEN2011_port->shadowLCR = Data;
+ ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,Data);
+
+ }
+
+ return status;
+}
+
+
+
+/*****************************************************************************
+ * ATEN2011_calc_baud_rate_divisor
+ * this function calculates the proper baud rate divisor for the specified
+ * baud rate.
+ *****************************************************************************/
+static int ATEN2011_calc_baud_rate_divisor (int baudRate, int *divisor,__u16 *clk_sel_val)
+{
+ //int i;
+ //__u16 custom,round1, round;
+
+ dbg("%s - %d", __FUNCTION__, 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;
+
+ #ifdef NOTATEN2011
+
+ for (i = 0; i < NUM_ENTRIES(ATEN2011_divisor_table); i++)
+ {
+ if ( ATEN2011_divisor_table[i].BaudRate == baudrate )
+ {
+ *divisor = ATEN2011_divisor_table[i].Divisor;
+ return 0;
+ }
+ }
+
+ /* After trying for all the standard baud rates *
+ * Try calculating the divisor for this baud rate */
+
+ if (baudrate > 75 && baudrate < 230400)
+ {
+ /* get the divisor */
+ custom = (__u16)(230400L / baudrate);
+
+ /* Check for round off */
+ round1 = (__u16)(2304000L / baudrate);
+ round = (__u16)(round1 - (custom * 10));
+ if (round > 4) {
+ custom++;
+ }
+ *divisor = custom;
+
+ DPRINTK(" Baud %d = %d\n",baudrate, custom);
+ return 0;
+ }
+
+ DPRINTK("%s\n"," Baud calculation Failed...");
+ return -1;
+ #endif
+}
+
+
+
+/*****************************************************************************
+ * ATEN2011_change_port_settings
+ * This routine is called to set the UART on the device to match
+ * the specified new settings.
+ *****************************************************************************/
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
+static void ATEN2011_change_port_settings(struct tty_struct *tty, struct ATENINTL_port *ATEN2011_port, struct ktermios *old_termios)
+#else
+static void ATEN2011_change_port_settings(struct ATENINTL_port *ATEN2011_port, struct ktermios *old_termios)
+#endif
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ struct tty_struct *tty;
+#endif
+ int baud;
+ unsigned cflag;
+ unsigned iflag;
+ __u8 mask = 0xff;
+ __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;
+
+ if(ATEN2011_port_paranoia_check(port,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid port \n");
+ return ;
+ }
+
+ if(ATEN2011_serial_paranoia_check(port->serial,__FUNCTION__) )
+ {
+ DPRINTK("%s","Invalid Serial \n");
+ return ;
+ }
+
+ serial = port->serial;
+
+ dbg("%s - port %d", __FUNCTION__, ATEN2011_port->port->number);
+
+ if ((!ATEN2011_port->open) && (!ATEN2011_port->openPending))
+ {
+ dbg("%s - port not opened", __FUNCTION__);
+ return;
+ }
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)
+ tty = ATEN2011_port->port->tty;
+#endif
+
+ if ((!tty) || (!tty->termios))
+ {
+ dbg("%s - no tty structures", __FUNCTION__);
+ return;
+ }
+
+ DPRINTK("%s","Entering .......... \n");
+
+ 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;
+ mask = 0x1f;
+ break;
+
+ case CS6: lData = LCR_BITS_6;
+ mask = 0x3f;
+ break;
+
+ case CS7: lData = LCR_BITS_7;
+ mask = 0x7f;
+ 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", __FUNCTION__);
+ }
+ else
+ {
+ lParity = LCR_PAR_EVEN;
+ dbg("%s - parity = even", __FUNCTION__);
+ }
+
+ }
+ else
+ {
+ dbg("%s - parity = none", __FUNCTION__);
+ }
+
+ if(cflag & CMSPAR)
+ {
+ lParity = lParity | 0x20;
+ }
+
+ /* Change the Stop bit */
+ if (cflag & CSTOPB)
+ {
+ lStop = LCR_STOP_2;
+ dbg("%s - stop bits = 2", __FUNCTION__);
+ }
+ else
+ {
+ lStop = LCR_STOP_1;
+ dbg("%s - stop bits = 1", __FUNCTION__);
+ }
+
+
+ /* 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);
+
+ ATEN2011_port->validDataMask = mask;
+ DPRINTK("ATEN2011_change_port_settings ATEN2011_port->shadowLCR is %x\n",ATEN2011_port->shadowLCR);
+ /* Disable Interrupts */
+ Data = 0x00;
+ ATEN2011_set_Uart_Reg(port,INTERRUPT_ENABLE_REGISTER,Data);
+
+
+ Data = 0x00;
+ ATEN2011_set_Uart_Reg(port,FIFO_CONTROL_REGISTER,Data);
+
+ Data = 0xcf;
+ ATEN2011_set_Uart_Reg(port,FIFO_CONTROL_REGISTER,Data);
+
+ /* Send the updated LCR value to the ATEN2011 */
+ Data = ATEN2011_port->shadowLCR;
+
+ ATEN2011_set_Uart_Reg(port,LINE_CONTROL_REGISTER,Data);
+
+
+ Data = 0x00b;
+ ATEN2011_port->shadowMCR = Data;
+ ATEN2011_set_Uart_Reg(port,MODEM_CONTROL_REGISTER,Data);
+ Data = 0x00b;
+ ATEN2011_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;
+ ATEN2011_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... */
+ DPRINTK("%s\n","Picked default baud...");
+ baud = 9600;
+ }
+
+
+ dbg("%s - baud rate = %d", __FUNCTION__, baud);
+ status = ATEN2011_send_cmd_write_baud_rate (ATEN2011_port, baud);
+
+ /* Enable Interrupts */
+ Data = 0x0c;
+ ATEN2011_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)
+ {
+ DPRINTK(" usb_submit_urb(read bulk) failed, status = %d", status);
+ }
+ }
+ //wake_up(&ATEN2011_port->delta_msr_wait);
+ //ATEN2011_port->delta_msr_cond=1;
+ DPRINTK("ATEN2011_change_port_settings ATEN2011_port->shadowLCR is End %x\n",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);
+
+ //printk("ATEN2011_calc_num_ports GPIO is %x\n",Data);
+
+
+/* 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;
+}
+
+
+/****************************************************************************
+ * ATEN2011_startup
+ ****************************************************************************/
+
+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;
+ DPRINTK("%s \n"," ATEN2011_startup :entering..........");
+
+ if(!serial)
+ {
+ DPRINTK("%s\n","Invalid Handler");
+ return -1;
+ }
+
+ dev = serial->dev;
+
+ DPRINTK("%s\n","Entering...");
+
+ /* create our private serial structure */
+ ATEN2011_serial = kzalloc (sizeof(struct ATENINTL_serial), GFP_KERNEL);
+ if (ATEN2011_serial == NULL)
+ {
+ err("%s - Out of memory", __FUNCTION__);
+ 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 FALSE
+ ATEN2011_serial->status_polling_started = FALSE;
+
+ ATEN2011_set_serial_private(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", __FUNCTION__);
+ ATEN2011_set_serial_private(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];
+//
+ ATEN2011_set_port_private(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);
+
+ ATEN2011_port->AppNum = (((__u16)serial->port[i]->number - \
+ (__u16)(minor))+1)<<8;
+
+ if(ATEN2011_port->port_num ==1)
+ {
+ ATEN2011_port->SpRegOffset =0x0;
+ ATEN2011_port->ControlRegOffset =0x1;
+ ATEN2011_port->DcrRegOffset =0x4 ;
+ //ATEN2011_port->ClkSelectRegOffset = ;
+ }
+ 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;
+ //ATEN2011_port->ClkSelectRegOffset = ;
+ }
+ 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;
+ //ATEN2011_port->ClkSelectRegOffset = ;
+ }
+ 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;
+ //ATEN2011_port->ClkSelectRegOffset = ;
+ }
+ 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 ;
+ //ATEN2011_port->ClkSelectRegOffset = ;
+ }
+ ATEN2011_Dump_serial_port(ATEN2011_port);
+
+ ATEN2011_set_port_private(serial->port[i],ATEN2011_port);
+
+
+ //enable rx_disable bit in control register
+
+ status=ATEN2011_get_reg_sync(serial->port[i],ATEN2011_port->ControlRegOffset,&Data);
+ if(status<0) {
+ DPRINTK("Reading ControlReg failed status-0x%x\n", status);
+ break;
+ }
+ else DPRINTK("ControlReg Reading success val is %x, status%d\n",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=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],ATEN2011_port->ControlRegOffset,Data);
+ if(status<0) {
+ DPRINTK("Writing ControlReg failed(rx_disable) status-0x%x\n", status);
+ break;
+ }
+ else DPRINTK("ControlReg Writing success(rx_disable) status%d\n",status);
+
+ //Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2 and 0x24 in DCR3
+ Data = 0x01;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],(__u16)(ATEN2011_port->DcrRegOffset+0),Data);
+ if(status<0) {
+ DPRINTK("Writing DCR0 failed status-0x%x\n", status);
+ break;
+ }
+ else DPRINTK("DCR0 Writing success status%d\n",status);
+
+ Data = 0x05;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],(__u16)(ATEN2011_port->DcrRegOffset+1),Data);
+ if(status<0) {
+ DPRINTK("Writing DCR1 failed status-0x%x\n", status);
+ break;
+ }
+ else DPRINTK("DCR1 Writing success status%d\n",status);
+
+ Data = 0x24;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],(__u16)(ATEN2011_port->DcrRegOffset+2),Data);
+ if(status<0) {
+ DPRINTK("Writing DCR2 failed status-0x%x\n", status);
+ break;
+ }
+ else DPRINTK("DCR2 Writing success status%d\n",status);
+
+ // write values in clkstart0x0 and clkmulti 0x20
+ Data = 0x0;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],CLK_START_VALUE_REGISTER,Data);
+ if(status<0) {
+ DPRINTK("Writing CLK_START_VALUE_REGISTER failed status-0x%x\n", status);
+ break;
+ }
+ else DPRINTK("CLK_START_VALUE_REGISTER Writing success status%d\n",status);
+
+
+ Data = 0x20;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],CLK_MULTI_REGISTER,Data);
+ if(status<0) {
+ DPRINTK("Writing CLK_MULTI_REGISTER failed status-0x%x\n", status);
+ break;
+ }
+ else DPRINTK("CLK_MULTI_REGISTER Writing success status%d\n",status);
+
+
+ //write value 0x0 to scratchpad register
+ /*
+ if(RS485mode==0)
+ Data = 0xC0;
+ else
+ Data = 0x00;
+ status=0;
+ status=ATEN2011_set_Uart_Reg(serial->port[i],SCRATCH_PAD_REGISTER,Data);
+ if(status<0) {
+ DPRINTK("Writing SCRATCH_PAD_REGISTER failed status-0x%x\n", status);
+ break;
+ }
+ else DPRINTK("SCRATCH_PAD_REGISTER Writing success status%d\n",status);
+ */
+
+ /*
+ //Threshold Registers
+ if(ATEN2011_serial->ATEN2011_spectrum_2or4ports==4)
+ {
+ Data = 0x00;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],\
+ (__u16)(THRESHOLD_VAL_SP1_1+(__u16)ATEN2011_Thr_cnt),Data);
+ DPRINTK("THRESHOLD_VAL offset is%x\n", (__u16)(THRESHOLD_VAL_SP1_1+(__u16)ATEN2011_Thr_cnt));
+ if(status<0) {
+ DPRINTK("Writing THRESHOLD_VAL failed status-0x%x\n",status);
+ break;
+ }
+ else DPRINTK("THRESHOLD_VAL Writing success status%d\n",status);
+ ATEN2011_Thr_cnt++;
+
+ Data = 0x01;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],\
+ (__u16)(THRESHOLD_VAL_SP1_1+(__u16)ATEN2011_Thr_cnt),Data);
+ DPRINTK("THRESHOLD_VAL offsetis%x\n",(__u16)(THRESHOLD_VAL_SP1_1+(__u16)ATEN2011_Thr_cnt));
+ if(status<0) {
+ DPRINTK("Writing THRESHOLD_VAL failed status-0x%x\n",status);
+ break;
+ }
+ else DPRINTK("THRESHOLD_VAL Writing success status%d\n",status);
+ ATEN2011_Thr_cnt++;
+ }
+
+ else
+ {
+
+ if(ATEN2011_port->port_num==1)
+ {
+ Data = 0x00;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],\
+ 0x3f,Data);
+ DPRINTK("THRESHOLD_VAL offset is 0x3f\n");
+ if(status<0) {
+ DPRINTK("Writing THRESHOLD_VAL failed status-0x%x\n",status);
+ break;
+ }
+ Data = 0x01;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],\
+ 0x40,Data);
+ DPRINTK("THRESHOLD_VAL offset is 0x40\n");
+ if(status<0) {
+ DPRINTK("Writing THRESHOLD_VAL failed status-0x%x\n",status);
+ break;
+
+ }
+ }
+ else
+ {
+ Data = 0x00;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],\
+ 0x43,Data);
+ DPRINTK("THRESHOLD_VAL offset is 0x43\n");
+ if(status<0) {
+ DPRINTK("Writing THRESHOLD_VAL failed status-0x%x\n",status);
+ break;
+ }
+ Data = 0x01;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],\
+ 0x44,Data);
+ DPRINTK("THRESHOLD_VAL offset is 0x44\n");
+ if(status<0) {
+ DPRINTK("Writing THRESHOLD_VAL failed status-0x%x\n",status);
+ break;
+
+ }
+
+
+ }
+
+ }
+ */
+ //Zero Length flag register
+ if((ATEN2011_port->port_num != 1)&&(ATEN2011_serial->ATEN2011_spectrum_2or4ports==2 ))
+ {
+
+ Data = 0xff;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],\
+ (__u16)(ZLP_REG1+((__u16)ATEN2011_port->port_num)),Data);
+ DPRINTK("ZLIP offset%x\n",(__u16)(ZLP_REG1+((__u16)ATEN2011_port->port_num)));
+ if(status<0) {
+ DPRINTK("Writing ZLP_REG%d failed status-0x%x\n",i+2,status);
+ break;
+ }
+ else DPRINTK("ZLP_REG%d Writing success status%d\n",i+2,status);
+ }
+ else
+ {
+ Data = 0xff;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[i],\
+ (__u16)(ZLP_REG1+((__u16)ATEN2011_port->port_num)-0x1),Data);
+ DPRINTK("ZLIP offset%x\n",(__u16)(ZLP_REG1+((__u16)ATEN2011_port->port_num)-0x1));
+ if(status<0) {
+ DPRINTK("Writing ZLP_REG%d failed status-0x%x\n",i+1,status);
+ break;
+ }
+ else DPRINTK("ZLP_REG%d Writing success status%d\n",i+1,status);
+
+
+ }
+ ATEN2011_port->control_urb = usb_alloc_urb(0,GFP_ATOMIC);
+ ATEN2011_port->ctrl_buf = kmalloc(16,GFP_KERNEL);
+
+
+ }
+
+
+ ATEN2011_Thr_cnt=0;
+ //Zero Length flag enable
+ Data = 0x0f;
+ status=0;
+ status=ATEN2011_set_reg_sync(serial->port[0],ZLP_REG5,Data);
+ if(status<0) {
+ DPRINTK("Writing ZLP_REG5 failed status-0x%x\n",status);
+ return -1;
+ }
+ else DPRINTK("ZLP_REG5 Writing success status%d\n",status);
+
+ /* setting configuration feature to one */
+ usb_control_msg (serial->dev, usb_sndctrlpipe(serial->dev, 0), (__u8)0x03, 0x00,0x01,0x00, 0x00, 0x00, 5*HZ);
+ ATEN2011_Thr_cnt =0 ;
+ return 0;
+}
+
+
+
+/****************************************************************************
+ * ATEN2011_shutdown
+ * This function is called whenever the device is removed from the usb bus.
+ ****************************************************************************/
+
+static void ATEN2011_shutdown (struct usb_serial *serial)
+{
+ int i;
+ struct ATENINTL_port *ATEN2011_port;
+ DPRINTK("%s \n"," shutdown :entering..........");
+
+/* MATRIX */
+ //ThreadState = 1;
+/* MATRIX */
+
+ if(!serial)
+ {
+ DPRINTK("%s","Invalid Handler \n");
+ return;
+ }
+
+ /* 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 = ATEN2011_get_port_private(serial->port[i]);
+ kfree(ATEN2011_port->ctrl_buf);
+ usb_kill_urb(ATEN2011_port->control_urb);
+ kfree(ATEN2011_port);
+ ATEN2011_set_port_private(serial->port[i],NULL);
+ }
+
+ /* free private structure allocated for serial device */
+
+ kfree(ATEN2011_get_serial_private(serial));
+ ATEN2011_set_serial_private(serial,NULL);
+
+ DPRINTK("%s\n","Thank u :: ");
+
+}
+
+
+/* Inline functions to check the sanity of a pointer that is passed to us */
+static int ATEN2011_serial_paranoia_check (struct usb_serial *serial, const char *function)
+{
+ if (!serial) {
+ dbg("%s - serial == NULL", function);
+ return -1;
+ }
+// if (serial->magic != USB_SERIAL_MAGIC) {
+// dbg("%s - bad magic number for serial", function);
+// return -1;
+// }
+ if (!serial->type) {
+ dbg("%s - serial->type == NULL!", function);
+ return -1;
+ }
+
+ return 0;
+}
+static int ATEN2011_port_paranoia_check (struct usb_serial_port *port, const char *function)
+{
+ if (!port) {
+ dbg("%s - port == NULL", function);
+ return -1;
+ }
+// if (port->magic != USB_SERIAL_PORT_MAGIC) {
+// dbg("%s - bad magic number for port", function);
+// return -1;
+// }
+ if (!port->serial) {
+ dbg("%s - port->serial == NULL", function);
+ return -1;
+ }
+
+ return 0;
+}
+static struct usb_serial* ATEN2011_get_usb_serial (struct usb_serial_port *port, const char *function) {
+ /* if no port was specified, or it fails a paranoia check */
+ if (!port ||
+ ATEN2011_port_paranoia_check (port, function) ||
+ ATEN2011_serial_paranoia_check (port->serial, function)) {
+ /* then say that we don't have a valid usb_serial thing, which will * end up genrating -ENODEV return values */
+ return NULL;
+ }
+
+ return port->serial;
+}
+
+
+
+/****************************************************************************
+ * ATENINTL2011_init
+ * This is called by the module subsystem, or on startup to initialize us
+ ****************************************************************************/
+ int __init ATENINTL2011_init(void)
+{
+ int retval;
+
+ DPRINTK("%s \n"," ATEN2011_init :entering..........");
+
+ /* Register with the usb serial */
+ retval = usb_serial_register (&ATENINTL2011_4port_device);
+
+ if(retval)
+ goto failed_port_device_register;
+
+/* info(DRIVER_DESC " " DRIVER_VERSION); */
+ printk(KERN_INFO KBUILD_MODNAME ":"
+ DRIVER_DESC " " DRIVER_VERSION "\n");
+
+
+ /* Register with the usb */
+ retval = usb_register(&io_driver);
+
+ if (retval)
+ goto failed_usb_register;
+
+ if(retval == 0)
+ {
+ DPRINTK("%s\n","Leaving...");
+ return 0;
+ }
+
+
+failed_usb_register:
+ usb_serial_deregister(&ATENINTL2011_4port_device);
+
+failed_port_device_register:
+
+ return retval;
+}
+
+/****************************************************************************
+ * ATENINTL2011_exit
+ * Called when the driver is about to be unloaded.
+ ****************************************************************************/
+void __exit ATENINTL2011_exit (void)
+{
+
+ DPRINTK("%s \n"," ATEN2011_exit :entering..........");
+
+ usb_deregister (&io_driver);
+
+ usb_serial_deregister (&ATENINTL2011_4port_device);
+
+ DPRINTK("%s\n","End...");
+}
+
+module_init(ATENINTL2011_init);
+module_exit(ATENINTL2011_exit);
+
+/* Module information */
+MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_LICENSE("GPL");
+
+MODULE_PARM_DESC(debug, "Debug enabled or not");
+
projects / GitHub / exynos8895 / android_kernel_samsung_universal8895.git / commitdiff