--- /dev/null
+/*
+ * Aten 2011 USB serial driver for 4 port devices
+ *
+ * Copyright (C) 2000 Inside Out Networks
+ * Copyright (C) 2001-2002, 2009 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2009 Novell Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/serial.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+
+#define ZLP_REG1 0x3A /* Zero_Flag_Reg1 58 */
+#define ZLP_REG2 0x3B /* Zero_Flag_Reg2 59 */
+#define ZLP_REG3 0x3C /* Zero_Flag_Reg3 60 */
+#define ZLP_REG4 0x3D /* Zero_Flag_Reg4 61 */
+#define ZLP_REG5 0x3E /* Zero_Flag_Reg5 62 */
+
+/* Interrupt Rotinue Defines */
+#define SERIAL_IIR_RLS 0x06
+#define SERIAL_IIR_RDA 0x04
+#define SERIAL_IIR_CTI 0x0c
+#define SERIAL_IIR_THR 0x02
+#define SERIAL_IIR_MS 0x00
+
+/* Emulation of the bit mask on the LINE STATUS REGISTER. */
+#define SERIAL_LSR_DR 0x0001
+#define SERIAL_LSR_OE 0x0002
+#define SERIAL_LSR_PE 0x0004
+#define SERIAL_LSR_FE 0x0008
+#define SERIAL_LSR_BI 0x0010
+#define SERIAL_LSR_THRE 0x0020
+#define SERIAL_LSR_TEMT 0x0040
+#define SERIAL_LSR_FIFOERR 0x0080
+
+/* MSR bit defines(place holders) */
+#define ATEN_MSR_DELTA_CTS 0x10
+#define ATEN_MSR_DELTA_DSR 0x20
+#define ATEN_MSR_DELTA_RI 0x40
+#define ATEN_MSR_DELTA_CD 0x80
+
+/* Serial Port register Address */
+#define RECEIVE_BUFFER_REGISTER ((__u16)(0x00))
+#define TRANSMIT_HOLDING_REGISTER ((__u16)(0x00))
+#define INTERRUPT_ENABLE_REGISTER ((__u16)(0x01))
+#define INTERRUPT_IDENT_REGISTER ((__u16)(0x02))
+#define FIFO_CONTROL_REGISTER ((__u16)(0x02))
+#define LINE_CONTROL_REGISTER ((__u16)(0x03))
+#define MODEM_CONTROL_REGISTER ((__u16)(0x04))
+#define LINE_STATUS_REGISTER ((__u16)(0x05))
+#define MODEM_STATUS_REGISTER ((__u16)(0x06))
+#define SCRATCH_PAD_REGISTER ((__u16)(0x07))
+#define DIVISOR_LATCH_LSB ((__u16)(0x00))
+#define DIVISOR_LATCH_MSB ((__u16)(0x01))
+
+#define SP1_REGISTER ((__u16)(0x00))
+#define CONTROL1_REGISTER ((__u16)(0x01))
+#define CLK_MULTI_REGISTER ((__u16)(0x02))
+#define CLK_START_VALUE_REGISTER ((__u16)(0x03))
+#define DCR1_REGISTER ((__u16)(0x04))
+#define GPIO_REGISTER ((__u16)(0x07))
+
+#define SERIAL_LCR_DLAB ((__u16)(0x0080))
+
+/*
+ * URB POOL related defines
+ */
+#define NUM_URBS 16 /* URB Count */
+#define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */
+
+#define USB_VENDOR_ID_ATENINTL 0x0557
+#define ATENINTL_DEVICE_ID_2011 0x2011
+#define ATENINTL_DEVICE_ID_7820 0x7820
+
+static struct usb_device_id id_table[] = {
+ { USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_2011) },
+ { USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_7820) },
+ { } /* terminating entry */
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+/* This structure holds all of the local port information */
+struct ATENINTL_port {
+ int port_num; /*Actual port number in the device(1,2,etc)*/
+ __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
+ unsigned char *bulk_out_buffer; /* buffer used for the bulk out endpoint */
+ struct urb *write_urb; /* write URB for this port */
+ __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
+ unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
+ struct urb *read_urb; /* read URB for this port */
+ __u8 shadowLCR; /* last LCR value received */
+ __u8 shadowMCR; /* last MCR value received */
+ char open;
+ char chaseResponsePending;
+ wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */
+ wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */
+ struct async_icount icount;
+ struct usb_serial_port *port; /* loop back to the owner of this object */
+ /*Offsets*/
+ __u8 SpRegOffset;
+ __u8 ControlRegOffset;
+ __u8 DcrRegOffset;
+ /* for processing control URBS in interrupt context */
+ struct urb *control_urb;
+ char *ctrl_buf;
+ int MsrLsr;
+
+ struct urb *write_urb_pool[NUM_URBS];
+ /* we pass a pointer to this as the arguement sent to cypress_set_termios old_termios */
+ struct ktermios tmp_termios; /* stores the old termios settings */
+ spinlock_t lock; /* private lock */
+};
+
+/* This structure holds all of the individual serial device information */
+struct ATENINTL_serial {
+ __u8 interrupt_in_endpoint; /* the interrupt endpoint handle */
+ unsigned char *interrupt_in_buffer; /* the buffer we use for the interrupt endpoint */
+ struct urb *interrupt_read_urb; /* our interrupt urb */
+ __u8 bulk_in_endpoint; /* the bulk in endpoint handle */
+ unsigned char *bulk_in_buffer; /* the buffer we use for the bulk in endpoint */
+ struct urb *read_urb; /* our bulk read urb */
+ __u8 bulk_out_endpoint; /* the bulk out endpoint handle */
+ struct usb_serial *serial; /* loop back to the owner of this object */
+ int ATEN2011_spectrum_2or4ports; /* this says the number of ports in the device */
+ /* Indicates about the no.of opened ports of an individual USB-serial adapater. */
+ unsigned int NoOfOpenPorts;
+ /* a flag for Status endpoint polling */
+ unsigned char status_polling_started;
+};
+
+static void ATEN2011_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port,
+ struct ktermios *old_termios);
+static void ATEN2011_change_port_settings(struct tty_struct *tty,
+ struct ATENINTL_port *ATEN2011_port,
+ struct ktermios *old_termios);
+
+/*************************************
+ * Bit definitions for each register *
+ *************************************/
+#define LCR_BITS_5 0x00 /* 5 bits/char */
+#define LCR_BITS_6 0x01 /* 6 bits/char */
+#define LCR_BITS_7 0x02 /* 7 bits/char */
+#define LCR_BITS_8 0x03 /* 8 bits/char */
+#define LCR_BITS_MASK 0x03 /* Mask for bits/char field */
+
+#define LCR_STOP_1 0x00 /* 1 stop bit */
+#define LCR_STOP_1_5 0x04 /* 1.5 stop bits (if 5 bits/char) */
+#define LCR_STOP_2 0x04 /* 2 stop bits (if 6-8 bits/char) */
+#define LCR_STOP_MASK 0x04 /* Mask for stop bits field */
+
+#define LCR_PAR_NONE 0x00 /* No parity */
+#define LCR_PAR_ODD 0x08 /* Odd parity */
+#define LCR_PAR_EVEN 0x18 /* Even parity */
+#define LCR_PAR_MARK 0x28 /* Force parity bit to 1 */
+#define LCR_PAR_SPACE 0x38 /* Force parity bit to 0 */
+#define LCR_PAR_MASK 0x38 /* Mask for parity field */
+
+#define LCR_SET_BREAK 0x40 /* Set Break condition */
+#define LCR_DL_ENABLE 0x80 /* Enable access to divisor latch */
+
+#define MCR_DTR 0x01 /* Assert DTR */
+#define MCR_RTS 0x02 /* Assert RTS */
+#define MCR_OUT1 0x04 /* Loopback only: Sets state of RI */
+#define MCR_MASTER_IE 0x08 /* Enable interrupt outputs */
+#define MCR_LOOPBACK 0x10 /* Set internal (digital) loopback mode */
+#define MCR_XON_ANY 0x20 /* Enable any char to exit XOFF mode */
+
+#define ATEN2011_MSR_CTS 0x10 /* Current state of CTS */
+#define ATEN2011_MSR_DSR 0x20 /* Current state of DSR */
+#define ATEN2011_MSR_RI 0x40 /* Current state of RI */
+#define ATEN2011_MSR_CD 0x80 /* Current state of CD */
+
+
+static int debug;
+
+/*
+ * Version Information
+ */
+#define DRIVER_VERSION "2.0"
+#define DRIVER_DESC "ATENINTL 2011 USB Serial Adapter"
+
+/*
+ * Defines used for sending commands to port
+ */
+
+#define ATEN_WDR_TIMEOUT (50) /* default urb timeout */
+
+/* Requests */
+#define ATEN_RD_RTYPE 0xC0
+#define ATEN_WR_RTYPE 0x40
+#define ATEN_RDREQ 0x0D
+#define ATEN_WRREQ 0x0E
+#define ATEN_CTRL_TIMEOUT 500
+#define VENDOR_READ_LENGTH (0x01)
+
+/* set to 1 for RS485 mode and 0 for RS232 mode */
+/* FIXME make this somehow dynamic and not build time specific */
+static int RS485mode;
+
+static int set_reg_sync(struct usb_serial_port *port, __u16 reg, __u16 val)
+{
+ struct usb_device *dev = port->serial->dev;
+ val = val & 0x00ff;
+
+ dbg("%s: is %x, value %x", __func__, reg, val);
+
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ATEN_WRREQ,
+ ATEN_WR_RTYPE, val, reg, NULL, 0,
+ ATEN_WDR_TIMEOUT);
+}
+
+static int get_reg_sync(struct usb_serial_port *port, __u16 reg, __u16 *val)
+{
+ struct usb_device *dev = port->serial->dev;
+ int ret;
+
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), ATEN_RDREQ,
+ ATEN_RD_RTYPE, 0, reg, val, VENDOR_READ_LENGTH,
+ ATEN_WDR_TIMEOUT);
+ dbg("%s: offset is %x, return val %x", __func__, reg, *val);
+ *val = (*val) & 0x00ff;
+ return ret;
+}
+
+static int set_uart_reg(struct usb_serial_port *port, __u16 reg, __u16 val)
+{
+ struct usb_device *dev = port->serial->dev;
+ struct ATENINTL_serial *a_serial;
+ __u16 minor;
+
+ a_serial = usb_get_serial_data(port->serial);
+ minor = port->serial->minor;
+ if (minor == SERIAL_TTY_NO_MINOR)
+ minor = 0;
+ val = val & 0x00ff;
+
+ /*
+ * For the UART control registers,
+ * the application number need to be Or'ed
+ */
+ if (a_serial->ATEN2011_spectrum_2or4ports == 4)
+ val |= (((__u16)port->number - minor) + 1) << 8;
+ else {
+ if (((__u16) port->number - minor) == 0)
+ val |= (((__u16)port->number - minor) + 1) << 8;
+ else
+ val |= (((__u16)port->number - minor) + 2) << 8;
+ }
+ dbg("%s: application number is %x", __func__, val);
+
+ return usb_control_msg(dev, usb_sndctrlpipe(dev, 0), ATEN_WRREQ,
+ ATEN_WR_RTYPE, val, reg, NULL, 0,
+ ATEN_WDR_TIMEOUT);
+}
+
+static int get_uart_reg(struct usb_serial_port *port, __u16 reg, __u16 *val)
+{
+ struct usb_device *dev = port->serial->dev;
+ int ret = 0;
+ __u16 wval;
+ struct ATENINTL_serial *a_serial;
+ __u16 minor = port->serial->minor;
+
+ a_serial = usb_get_serial_data(port->serial);
+ if (minor == SERIAL_TTY_NO_MINOR)
+ minor = 0;
+
+ /* wval is same as application number */
+ if (a_serial->ATEN2011_spectrum_2or4ports == 4)
+ wval = (((__u16)port->number - minor) + 1) << 8;
+ else {
+ if (((__u16) port->number - minor) == 0)
+ wval = (((__u16) port->number - minor) + 1) << 8;
+ else
+ wval = (((__u16) port->number - minor) + 2) << 8;
+ }
+ dbg("%s: application number is %x", __func__, wval);
+ ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0), ATEN_RDREQ,
+ ATEN_RD_RTYPE, wval, reg, val, VENDOR_READ_LENGTH,
+ ATEN_WDR_TIMEOUT);
+ *val = (*val) & 0x00ff;
+ return ret;
+}
+
+static int handle_newMsr(struct ATENINTL_port *port, __u8 newMsr)
+{
+ struct ATENINTL_port *ATEN2011_port;
+ struct async_icount *icount;
+ ATEN2011_port = port;
+ icount = &ATEN2011_port->icount;
+ if (newMsr &
+ (ATEN_MSR_DELTA_CTS | ATEN_MSR_DELTA_DSR | ATEN_MSR_DELTA_RI |
+ ATEN_MSR_DELTA_CD)) {
+ icount = &ATEN2011_port->icount;
+
+ /* update input line counters */
+ if (newMsr & ATEN_MSR_DELTA_CTS)
+ icount->cts++;
+ if (newMsr & ATEN_MSR_DELTA_DSR)
+ icount->dsr++;
+ if (newMsr & ATEN_MSR_DELTA_CD)
+ icount->dcd++;
+ if (newMsr & ATEN_MSR_DELTA_RI)
+ icount->rng++;
+ }
+
+ return 0;
+}
+
+static int handle_newLsr(struct ATENINTL_port *port, __u8 newLsr)
+{
+ struct async_icount *icount;
+
+ dbg("%s - %02x", __func__, newLsr);
+
+ if (newLsr & SERIAL_LSR_BI) {
+ /*
+ * Parity and Framing errors only count if they occur exclusive
+ * of a break being received.
+ */
+ newLsr &= (__u8) (SERIAL_LSR_OE | SERIAL_LSR_BI);
+ }
+
+ /* update input line counters */
+ icount = &port->icount;
+ if (newLsr & SERIAL_LSR_BI)
+ icount->brk++;
+ if (newLsr & SERIAL_LSR_OE)
+ icount->overrun++;
+ if (newLsr & SERIAL_LSR_PE)
+ icount->parity++;
+ if (newLsr & SERIAL_LSR_FE)
+ icount->frame++;
+
+ return 0;
+}
+
+static void ATEN2011_control_callback(struct urb *urb)
+{
+ unsigned char *data;
+ struct ATENINTL_port *ATEN2011_port;
+ __u8 regval = 0x0;
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __func__,
+ urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d", __func__,
+ urb->status);
+ goto exit;
+ }
+
+ ATEN2011_port = (struct ATENINTL_port *)urb->context;
+
+ dbg("%s urb buffer size is %d", __func__, urb->actual_length);
+ dbg("%s ATEN2011_port->MsrLsr is %d port %d", __func__,
+ ATEN2011_port->MsrLsr, ATEN2011_port->port_num);
+ data = urb->transfer_buffer;
+ regval = (__u8) data[0];
+ dbg("%s data is %x", __func__, regval);
+ if (ATEN2011_port->MsrLsr == 0)
+ handle_newMsr(ATEN2011_port, regval);
+ else if (ATEN2011_port->MsrLsr == 1)
+ handle_newLsr(ATEN2011_port, regval);
+
+exit:
+ return;
+}
+
+static int ATEN2011_get_reg(struct ATENINTL_port *ATEN, __u16 Wval, __u16 reg,
+ __u16 *val)
+{
+ struct usb_device *dev = ATEN->port->serial->dev;
+ struct usb_ctrlrequest *dr = NULL;
+ unsigned char *buffer = NULL;
+ int ret = 0;
+ buffer = (__u8 *) ATEN->ctrl_buf;
+
+ dr = (void *)(buffer + 2);
+ dr->bRequestType = ATEN_RD_RTYPE;
+ dr->bRequest = ATEN_RDREQ;
+ dr->wValue = cpu_to_le16(Wval);
+ dr->wIndex = cpu_to_le16(reg);
+ dr->wLength = cpu_to_le16(2);
+
+ usb_fill_control_urb(ATEN->control_urb, dev, usb_rcvctrlpipe(dev, 0),
+ (unsigned char *)dr, buffer, 2,
+ ATEN2011_control_callback, ATEN);
+ ATEN->control_urb->transfer_buffer_length = 2;
+ ret = usb_submit_urb(ATEN->control_urb, GFP_ATOMIC);
+ return ret;
+}
+
+static void ATEN2011_interrupt_callback(struct urb *urb)
+{
+ int result;
+ int length;
+ struct ATENINTL_port *ATEN2011_port;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct usb_serial *serial;
+ __u16 Data;
+ unsigned char *data;
+ __u8 sp[5], st;
+ int i;
+ __u16 wval;
+ int minor;
+
+ dbg("%s", " : Entering");
+
+ ATEN2011_serial = (struct ATENINTL_serial *)urb->context;
+
+ switch (urb->status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dbg("%s - urb shutting down with status: %d", __func__,
+ urb->status);
+ return;
+ default:
+ dbg("%s - nonzero urb status received: %d", __func__,
+ urb->status);
+ goto exit;
+ }
+ length = urb->actual_length;
+ data = urb->transfer_buffer;
+
+ serial = ATEN2011_serial->serial;
+
+ /* ATENINTL get 5 bytes
+ * Byte 1 IIR Port 1 (port.number is 0)
+ * Byte 2 IIR Port 2 (port.number is 1)
+ * Byte 3 IIR Port 3 (port.number is 2)
+ * Byte 4 IIR Port 4 (port.number is 3)
+ * Byte 5 FIFO status for both */
+
+ if (length && length > 5) {
+ dbg("%s", "Wrong data !!!");
+ return;
+ }
+
+ /* MATRIX */
+ if (ATEN2011_serial->ATEN2011_spectrum_2or4ports == 4) {
+ sp[0] = (__u8) data[0];
+ sp[1] = (__u8) data[1];
+ sp[2] = (__u8) data[2];
+ sp[3] = (__u8) data[3];
+ st = (__u8) data[4];
+ } else {
+ sp[0] = (__u8) data[0];
+ sp[1] = (__u8) data[2];
+ /* sp[2]=(__u8)data[2]; */
+ /* sp[3]=(__u8)data[3]; */
+ st = (__u8) data[4];
+
+ }
+ for (i = 0; i < serial->num_ports; i++) {
+ ATEN2011_port = usb_get_serial_port_data(serial->port[i]);
+ minor = serial->minor;
+ if (minor == SERIAL_TTY_NO_MINOR)
+ minor = 0;
+ if ((ATEN2011_serial->ATEN2011_spectrum_2or4ports == 2)
+ && (i != 0))
+ wval =
+ (((__u16) serial->port[i]->number -
+ (__u16) (minor)) + 2) << 8;
+ else
+ wval =
+ (((__u16) serial->port[i]->number -
+ (__u16) (minor)) + 1) << 8;
+ if (ATEN2011_port->open != 0) {
+ if (sp[i] & 0x01) {
+ dbg("SP%d No Interrupt !!!", i);
+ } else {
+ switch (sp[i] & 0x0f) {
+ case SERIAL_IIR_RLS:
+ dbg("Serial Port %d: Receiver status error or address bit detected in 9-bit mode", i);
+ ATEN2011_port->MsrLsr = 1;
+ ATEN2011_get_reg(ATEN2011_port, wval,
+ LINE_STATUS_REGISTER,
+ &Data);
+ break;
+ case SERIAL_IIR_MS:
+ dbg("Serial Port %d: Modem status change", i);
+ ATEN2011_port->MsrLsr = 0;
+ ATEN2011_get_reg(ATEN2011_port, wval,
+ MODEM_STATUS_REGISTER,
+ &Data);
+ break;
+ }
+ }
+ }
+
+ }
+exit:
+ if (ATEN2011_serial->status_polling_started == 0)
+ return;
+
+ result = usb_submit_urb(urb, GFP_ATOMIC);
+ if (result) {
+ dev_err(&urb->dev->dev,
+ "%s - Error %d submitting interrupt urb\n",
+ __func__, result);
+ }
+
+ return;
+}
+
+static void ATEN2011_bulk_in_callback(struct urb *urb)
+{
+ int status;
+ unsigned char *data;
+ struct usb_serial *serial;
+ struct usb_serial_port *port;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct ATENINTL_port *ATEN2011_port;
+ struct tty_struct *tty;
+
+ if (urb->status) {
+ dbg("nonzero read bulk status received: %d", urb->status);
+ return;
+ }
+
+ ATEN2011_port = (struct ATENINTL_port *)urb->context;
+
+ port = (struct usb_serial_port *)ATEN2011_port->port;
+ serial = port->serial;
+
+ dbg("%s", "Entering...");
+
+ data = urb->transfer_buffer;
+ ATEN2011_serial = usb_get_serial_data(serial);
+
+ if (urb->actual_length) {
+ tty = tty_port_tty_get(&ATEN2011_port->port->port);
+ if (tty) {
+ tty_buffer_request_room(tty, urb->actual_length);
+ tty_insert_flip_string(tty, data, urb->actual_length);
+ tty_flip_buffer_push(tty);
+ tty_kref_put(tty);
+ }
+
+ ATEN2011_port->icount.rx += urb->actual_length;
+ dbg("ATEN2011_port->icount.rx is %d:",
+ ATEN2011_port->icount.rx);
+ }
+
+ if (!ATEN2011_port->read_urb) {
+ dbg("%s", "URB KILLED !!!");
+ return;
+ }
+
+ if (ATEN2011_port->read_urb->status != -EINPROGRESS) {
+ ATEN2011_port->read_urb->dev = serial->dev;
+
+ status = usb_submit_urb(ATEN2011_port->read_urb, GFP_ATOMIC);
+ if (status)
+ dbg("usb_submit_urb(read bulk) failed, status = %d", status);
+ }
+}
+
+static void ATEN2011_bulk_out_data_callback(struct urb *urb)
+{
+ struct ATENINTL_port *ATEN2011_port;
+ struct tty_struct *tty;
+
+ if (urb->status) {
+ dbg("nonzero write bulk status received:%d", urb->status);
+ return;
+ }
+
+ ATEN2011_port = (struct ATENINTL_port *)urb->context;
+
+ dbg("%s", "Entering .........");
+
+ tty = tty_port_tty_get(&ATEN2011_port->port->port);
+
+ if (tty && ATEN2011_port->open) {
+ /* tell the tty driver that something has changed */
+ wake_up_interruptible(&tty->write_wait);
+ }
+
+ /* schedule_work(&ATEN2011_port->port->work); */
+ tty_kref_put(tty);
+
+}
+
+#ifdef ATENSerialProbe
+static int ATEN2011_serial_probe(struct usb_serial *serial,
+ const struct usb_device_id *id)
+{
+
+ /*need to implement the mode_reg reading and updating\
+ structures usb_serial_ device_type\
+ (i.e num_ports, num_bulkin,bulkout etc) */
+ /* Also we can update the changes attach */
+ return 1;
+}
+#endif
+
+static int ATEN2011_open(struct tty_struct *tty, struct usb_serial_port *port,
+ struct file *filp)
+{
+ int response;
+ int j;
+ struct usb_serial *serial;
+ struct urb *urb;
+ __u16 Data;
+ int status;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct ATENINTL_port *ATEN2011_port;
+ struct ktermios tmp_termios;
+ int minor;
+
+ serial = port->serial;
+
+ ATEN2011_port = usb_get_serial_port_data(port);
+
+ if (ATEN2011_port == NULL)
+ return -ENODEV;
+
+ ATEN2011_serial = usb_get_serial_data(serial);
+ if (ATEN2011_serial == NULL)
+ return -ENODEV;
+
+ /* increment the number of opened ports counter here */
+ ATEN2011_serial->NoOfOpenPorts++;
+
+ usb_clear_halt(serial->dev, port->write_urb->pipe);
+ usb_clear_halt(serial->dev, port->read_urb->pipe);
+
+ /* Initialising the write urb pool */
+ for (j = 0; j < NUM_URBS; ++j) {
+ urb = usb_alloc_urb(0, GFP_ATOMIC);
+ ATEN2011_port->write_urb_pool[j] = urb;
+
+ if (urb == NULL) {
+ err("No more urbs???");
+ continue;
+ }
+
+ urb->transfer_buffer = NULL;
+ urb->transfer_buffer =
+ kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
+ if (!urb->transfer_buffer) {
+ err("%s-out of memory for urb buffers.", __func__);
+ continue;
+ }
+ }
+
+/*****************************************************************************
+ * Initialize ATEN2011 -- Write Init values to corresponding Registers
+ *
+ * Register Index
+ * 1 : IER
+ * 2 : FCR
+ * 3 : LCR
+ * 4 : MCR
+ *
+ * 0x08 : SP1/2 Control Reg
+ *****************************************************************************/
+
+/* NEED to check the fallowing Block */
+
+ Data = 0x0;
+ status = get_reg_sync(port, ATEN2011_port->SpRegOffset, &Data);
+ if (status < 0) {
+ dbg("Reading Spreg failed");
+ return -1;
+ }
+ Data |= 0x80;
+ status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data);
+ if (status < 0) {
+ dbg("writing Spreg failed");
+ return -1;
+ }
+
+ Data &= ~0x80;
+ status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data);
+ if (status < 0) {
+ dbg("writing Spreg failed");
+ return -1;
+ }
+
+/* End of block to be checked */
+/**************************CHECK***************************/
+
+ if (RS485mode == 0)
+ Data = 0xC0;
+ else
+ Data = 0x00;
+ status = set_uart_reg(port, SCRATCH_PAD_REGISTER, Data);
+ if (status < 0) {
+ dbg("Writing SCRATCH_PAD_REGISTER failed status-0x%x", status);
+ return -1;
+ } else
+ dbg("SCRATCH_PAD_REGISTER Writing success status%d", status);
+
+/**************************CHECK***************************/
+
+ Data = 0x0;
+ status = get_reg_sync(port, ATEN2011_port->ControlRegOffset, &Data);
+ if (status < 0) {
+ dbg("Reading Controlreg failed");
+ return -1;
+ }
+ Data |= 0x08; /* Driver done bit */
+ Data |= 0x20; /* rx_disable */
+ status = 0;
+ status =
+ set_reg_sync(port, ATEN2011_port->ControlRegOffset, Data);
+ if (status < 0) {
+ dbg("writing Controlreg failed");
+ return -1;
+ }
+ /*
+ * do register settings here
+ * Set all regs to the device default values.
+ * First Disable all interrupts.
+ */
+
+ Data = 0x00;
+ status = set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
+ if (status < 0) {
+ dbg("disableing interrupts failed");
+ return -1;
+ }
+ /* Set FIFO_CONTROL_REGISTER to the default value */
+ Data = 0x00;
+ status = set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
+ if (status < 0) {
+ dbg("Writing FIFO_CONTROL_REGISTER failed");
+ return -1;
+ }
+
+ Data = 0xcf; /* chk */
+ status = set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
+ if (status < 0) {
+ dbg("Writing FIFO_CONTROL_REGISTER failed");
+ return -1;
+ }
+
+ Data = 0x03; /* LCR_BITS_8 */
+ status = set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
+ ATEN2011_port->shadowLCR = Data;
+
+ Data = 0x0b; /* MCR_DTR|MCR_RTS|MCR_MASTER_IE */
+ status = set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+ ATEN2011_port->shadowMCR = Data;
+
+#ifdef Check
+ Data = 0x00;
+ status = get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
+ ATEN2011_port->shadowLCR = Data;
+
+ Data |= SERIAL_LCR_DLAB; /* data latch enable in LCR 0x80 */
+ status = set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
+
+ Data = 0x0c;
+ status = set_uart_reg(port, DIVISOR_LATCH_LSB, Data);
+
+ Data = 0x0;
+ status = set_uart_reg(port, DIVISOR_LATCH_MSB, Data);
+
+ Data = 0x00;
+ status = get_uart_reg(port, LINE_CONTROL_REGISTER, &Data);
+
+/* Data = ATEN2011_port->shadowLCR; */ /* data latch disable */
+ Data = Data & ~SERIAL_LCR_DLAB;
+ status = set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
+ ATEN2011_port->shadowLCR = Data;
+#endif
+ /* clearing Bulkin and Bulkout Fifo */
+ Data = 0x0;
+ status = get_reg_sync(port, ATEN2011_port->SpRegOffset, &Data);
+
+ Data = Data | 0x0c;
+ status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data);
+
+ Data = Data & ~0x0c;
+ status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data);
+ /* Finally enable all interrupts */
+ Data = 0x0;
+ Data = 0x0c;
+ status = set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
+
+ /* clearing rx_disable */
+ Data = 0x0;
+ status = get_reg_sync(port, ATEN2011_port->ControlRegOffset, &Data);
+ Data = Data & ~0x20;
+ status = set_reg_sync(port, ATEN2011_port->ControlRegOffset, Data);
+
+ /* rx_negate */
+ Data = 0x0;
+ status = get_reg_sync(port, ATEN2011_port->ControlRegOffset, &Data);
+ Data = Data | 0x10;
+ status = 0;
+ status = set_reg_sync(port, ATEN2011_port->ControlRegOffset, Data);
+
+ /* 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 (tty)
+ tty->low_latency = 1;
+ /*
+ * Check to see if we've set up our endpoint info yet
+ * (can't set it up in ATEN2011_startup as the structures
+ * were not set up at that time.)
+ */
+ if (ATEN2011_serial->NoOfOpenPorts == 1) {
+ /* start the status polling here */
+ ATEN2011_serial->status_polling_started = 1;
+ /* If not yet set, Set here */
+ ATEN2011_serial->interrupt_in_buffer =
+ serial->port[0]->interrupt_in_buffer;
+ ATEN2011_serial->interrupt_in_endpoint =
+ serial->port[0]->interrupt_in_endpointAddress;
+ ATEN2011_serial->interrupt_read_urb =
+ serial->port[0]->interrupt_in_urb;
+
+ /* set up interrupt urb */
+ usb_fill_int_urb(ATEN2011_serial->interrupt_read_urb,
+ serial->dev,
+ usb_rcvintpipe(serial->dev,
+ ATEN2011_serial->
+ interrupt_in_endpoint),
+ ATEN2011_serial->interrupt_in_buffer,
+ ATEN2011_serial->interrupt_read_urb->
+ transfer_buffer_length,
+ ATEN2011_interrupt_callback, ATEN2011_serial,
+ ATEN2011_serial->interrupt_read_urb->interval);
+
+ /* start interrupt read for ATEN2011 *
+ * will continue as long as ATEN2011 is connected */
+
+ response =
+ usb_submit_urb(ATEN2011_serial->interrupt_read_urb,
+ GFP_KERNEL);
+ if (response) {
+ dbg("%s - Error %d submitting interrupt urb",
+ __func__, response);
+ }
+
+ }
+
+ /*
+ * See if we've set up our endpoint info yet
+ * (can't set it up in ATEN2011_startup as the
+ * structures were not set up at that time.)
+ */
+
+ dbg("port number is %d", port->number);
+ dbg("serial number is %d", port->serial->minor);
+ dbg("Bulkin endpoint is %d", port->bulk_in_endpointAddress);
+ dbg("BulkOut endpoint is %d", port->bulk_out_endpointAddress);
+ dbg("Interrupt endpoint is %d",
+ port->interrupt_in_endpointAddress);
+ dbg("port's number in the device is %d", ATEN2011_port->port_num);
+ ATEN2011_port->bulk_in_buffer = port->bulk_in_buffer;
+ ATEN2011_port->bulk_in_endpoint = port->bulk_in_endpointAddress;
+ ATEN2011_port->read_urb = port->read_urb;
+ ATEN2011_port->bulk_out_endpoint = port->bulk_out_endpointAddress;
+
+ minor = port->serial->minor;
+ if (minor == SERIAL_TTY_NO_MINOR)
+ minor = 0;
+
+ /* set up our bulk in urb */
+ if ((ATEN2011_serial->ATEN2011_spectrum_2or4ports == 2)
+ && (((__u16) port->number - (__u16) (minor)) != 0)) {
+ usb_fill_bulk_urb(ATEN2011_port->read_urb, serial->dev,
+ usb_rcvbulkpipe(serial->dev,
+ (port->
+ bulk_in_endpointAddress +
+ 2)), port->bulk_in_buffer,
+ ATEN2011_port->read_urb->
+ transfer_buffer_length,
+ ATEN2011_bulk_in_callback, ATEN2011_port);
+ } else
+ usb_fill_bulk_urb(ATEN2011_port->read_urb,
+ serial->dev,
+ usb_rcvbulkpipe(serial->dev,
+ port->
+ bulk_in_endpointAddress),
+ port->bulk_in_buffer,
+ ATEN2011_port->read_urb->
+ transfer_buffer_length,
+ ATEN2011_bulk_in_callback, ATEN2011_port);
+
+ dbg("ATEN2011_open: bulkin endpoint is %d",
+ port->bulk_in_endpointAddress);
+ response = usb_submit_urb(ATEN2011_port->read_urb, GFP_KERNEL);
+ if (response) {
+ err("%s - Error %d submitting control urb", __func__,
+ response);
+ }
+
+ /* initialize our wait queues */
+ init_waitqueue_head(&ATEN2011_port->wait_chase);
+ init_waitqueue_head(&ATEN2011_port->wait_command);
+
+ /* initialize our icount structure */
+ memset(&(ATEN2011_port->icount), 0x00, sizeof(ATEN2011_port->icount));
+
+ /* initialize our port settings */
+ ATEN2011_port->shadowMCR = MCR_MASTER_IE; /* Must set to enable ints! */
+ ATEN2011_port->chaseResponsePending = 0;
+ /* send a open port command */
+ ATEN2011_port->open = 1;
+ /* ATEN2011_change_port_settings(ATEN2011_port,old_termios); */
+ /* Setup termios */
+ ATEN2011_set_termios(tty, port, &tmp_termios);
+ ATEN2011_port->icount.tx = 0;
+ ATEN2011_port->icount.rx = 0;
+
+ dbg("usb_serial serial:%x ATEN2011_port:%x\nATEN2011_serial:%x usb_serial_port port:%x",
+ (unsigned int)serial, (unsigned int)ATEN2011_port,
+ (unsigned int)ATEN2011_serial, (unsigned int)port);
+
+ return 0;
+
+}
+
+static int ATEN2011_chars_in_buffer(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ int i;
+ int chars = 0;
+ struct ATENINTL_port *ATEN2011_port;
+
+ /* dbg("%s"," ATEN2011_chars_in_buffer:entering ..........."); */
+
+ ATEN2011_port = usb_get_serial_port_data(port);
+ if (ATEN2011_port == NULL) {
+ dbg("%s", "ATEN2011_break:leaving ...........");
+ return -1;
+ }
+
+ for (i = 0; i < NUM_URBS; ++i)
+ if (ATEN2011_port->write_urb_pool[i]->status == -EINPROGRESS)
+ chars += URB_TRANSFER_BUFFER_SIZE;
+
+ dbg("%s - returns %d", __func__, chars);
+ return chars;
+
+}
+
+static void ATEN2011_block_until_tx_empty(struct tty_struct *tty,
+ struct ATENINTL_port *ATEN2011_port)
+{
+ int timeout = HZ / 10;
+ int wait = 30;
+ int count;
+
+ while (1) {
+ count = ATEN2011_chars_in_buffer(tty);
+
+ /* Check for Buffer status */
+ if (count <= 0)
+ return;
+
+ /* Block the thread for a while */
+ interruptible_sleep_on_timeout(&ATEN2011_port->wait_chase,
+ timeout);
+
+ /* No activity.. count down section */
+ wait--;
+ if (wait == 0) {
+ dbg("%s - TIMEOUT", __func__);
+ return;
+ } else {
+ /* Reset timout value back to seconds */
+ wait = 30;
+ }
+ }
+}
+
+static void ATEN2011_close(struct tty_struct *tty, struct usb_serial_port *port,
+ struct file *filp)
+{
+ struct usb_serial *serial;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct ATENINTL_port *ATEN2011_port;
+ int no_urbs;
+ __u16 Data;
+
+ dbg("%s", "ATEN2011_close:entering...");
+ serial = port->serial;
+
+ /* take the Adpater and port's private data */
+ ATEN2011_serial = usb_get_serial_data(serial);
+ ATEN2011_port = usb_get_serial_port_data(port);
+ if ((ATEN2011_serial == NULL) || (ATEN2011_port == NULL))
+ return;
+
+ if (serial->dev) {
+ /* flush and block(wait) until tx is empty */
+ ATEN2011_block_until_tx_empty(tty, ATEN2011_port);
+ }
+ /* kill the ports URB's */
+ for (no_urbs = 0; no_urbs < NUM_URBS; no_urbs++)
+ usb_kill_urb(ATEN2011_port->write_urb_pool[no_urbs]);
+ /* Freeing Write URBs */
+ for (no_urbs = 0; no_urbs < NUM_URBS; ++no_urbs) {
+ kfree(ATEN2011_port->write_urb_pool[no_urbs]->transfer_buffer);
+ usb_free_urb(ATEN2011_port->write_urb_pool[no_urbs]);
+ }
+ /* While closing port, shutdown all bulk read, write *
+ * and interrupt read if they exists */
+ if (serial->dev) {
+ if (ATEN2011_port->write_urb) {
+ dbg("%s", "Shutdown bulk write");
+ usb_kill_urb(ATEN2011_port->write_urb);
+ }
+ if (ATEN2011_port->read_urb) {
+ dbg("%s", "Shutdown bulk read");
+ usb_kill_urb(ATEN2011_port->read_urb);
+ }
+ if ((&ATEN2011_port->control_urb)) {
+ dbg("%s", "Shutdown control read");
+ /* usb_kill_urb (ATEN2011_port->control_urb); */
+
+ }
+ }
+ /* if(ATEN2011_port->ctrl_buf != NULL) */
+ /* kfree(ATEN2011_port->ctrl_buf); */
+ /* decrement the no.of open ports counter of an individual USB-serial adapter. */
+ ATEN2011_serial->NoOfOpenPorts--;
+ dbg("NoOfOpenPorts in close%d:in port%d",
+ ATEN2011_serial->NoOfOpenPorts, port->number);
+ if (ATEN2011_serial->NoOfOpenPorts == 0) {
+ /* stop the stus polling here */
+ ATEN2011_serial->status_polling_started = 0;
+ if (ATEN2011_serial->interrupt_read_urb) {
+ dbg("%s", "Shutdown interrupt_read_urb");
+ /* ATEN2011_serial->interrupt_in_buffer=NULL; */
+ /* usb_kill_urb (ATEN2011_serial->interrupt_read_urb); */
+ }
+ }
+ if (ATEN2011_port->write_urb) {
+ /* if this urb had a transfer buffer already (old tx) free it */
+ kfree(ATEN2011_port->write_urb->transfer_buffer);
+ usb_free_urb(ATEN2011_port->write_urb);
+ }
+
+ /* clear the MCR & IER */
+ Data = 0x00;
+ set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+ Data = 0x00;
+ set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
+
+ ATEN2011_port->open = 0;
+ dbg("%s", "Leaving ............");
+
+}
+
+static void ATEN2011_block_until_chase_response(struct tty_struct *tty,
+ struct ATENINTL_port
+ *ATEN2011_port)
+{
+ int timeout = 1 * HZ;
+ int wait = 10;
+ int count;
+
+ while (1) {
+ count = ATEN2011_chars_in_buffer(tty);
+
+ /* Check for Buffer status */
+ if (count <= 0) {
+ ATEN2011_port->chaseResponsePending = 0;
+ return;
+ }
+
+ /* Block the thread for a while */
+ interruptible_sleep_on_timeout(&ATEN2011_port->wait_chase,
+ timeout);
+ /* No activity.. count down section */
+ wait--;
+ if (wait == 0) {
+ dbg("%s - TIMEOUT", __func__);
+ return;
+ } else {
+ /* Reset timout value back to seconds */
+ wait = 10;
+ }
+ }
+
+}
+
+static void ATEN2011_break(struct tty_struct *tty, int break_state)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ unsigned char data;
+ struct usb_serial *serial;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct ATENINTL_port *ATEN2011_port;
+
+ dbg("%s", "Entering ...........");
+ dbg("ATEN2011_break: Start");
+
+ serial = port->serial;
+
+ ATEN2011_serial = usb_get_serial_data(serial);
+ ATEN2011_port = usb_get_serial_port_data(port);
+
+ if ((ATEN2011_serial == NULL) || (ATEN2011_port == NULL))
+ return;
+
+ /* flush and chase */
+ ATEN2011_port->chaseResponsePending = 1;
+
+ if (serial->dev) {
+ /* flush and block until tx is empty */
+ ATEN2011_block_until_chase_response(tty, ATEN2011_port);
+ }
+
+ if (break_state == -1)
+ data = ATEN2011_port->shadowLCR | LCR_SET_BREAK;
+ else
+ data = ATEN2011_port->shadowLCR & ~LCR_SET_BREAK;
+
+ ATEN2011_port->shadowLCR = data;
+ dbg("ATEN2011_break ATEN2011_port->shadowLCR is %x",
+ ATEN2011_port->shadowLCR);
+ set_uart_reg(port, LINE_CONTROL_REGISTER, ATEN2011_port->shadowLCR);
+
+ return;
+}
+
+static int ATEN2011_write_room(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ int i;
+ int room = 0;
+ struct ATENINTL_port *ATEN2011_port;
+
+ ATEN2011_port = usb_get_serial_port_data(port);
+ if (ATEN2011_port == NULL) {
+ dbg("%s", "ATEN2011_break:leaving ...........");
+ return -1;
+ }
+
+ for (i = 0; i < NUM_URBS; ++i)
+ if (ATEN2011_port->write_urb_pool[i]->status != -EINPROGRESS)
+ room += URB_TRANSFER_BUFFER_SIZE;
+
+ dbg("%s - returns %d", __func__, room);
+ return room;
+
+}
+
+static int ATEN2011_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *data, int count)
+{
+ int status;
+ int i;
+ int bytes_sent = 0;
+ int transfer_size;
+ int minor;
+
+ struct ATENINTL_port *ATEN2011_port;
+ struct usb_serial *serial;
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct urb *urb;
+ const unsigned char *current_position = data;
+ unsigned char *data1;
+ dbg("%s", "entering ...........");
+
+ serial = port->serial;
+
+ ATEN2011_port = usb_get_serial_port_data(port);
+ if (ATEN2011_port == NULL) {
+ dbg("%s", "ATEN2011_port is NULL");
+ return -1;
+ }
+
+ ATEN2011_serial = usb_get_serial_data(serial);
+ if (ATEN2011_serial == NULL) {
+ dbg("%s", "ATEN2011_serial is NULL");
+ return -1;
+ }
+
+ /* try to find a free urb in the list */
+ urb = NULL;
+
+ for (i = 0; i < NUM_URBS; ++i) {
+ if (ATEN2011_port->write_urb_pool[i]->status != -EINPROGRESS) {
+ urb = ATEN2011_port->write_urb_pool[i];
+ dbg("URB:%d", i);
+ break;
+ }
+ }
+
+ if (urb == NULL) {
+ dbg("%s - no more free urbs", __func__);
+ goto exit;
+ }
+
+ if (urb->transfer_buffer == NULL) {
+ urb->transfer_buffer =
+ kmalloc(URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
+
+ if (urb->transfer_buffer == NULL) {
+ err("%s no more kernel memory...", __func__);
+ goto exit;
+ }
+ }
+ transfer_size = min(count, URB_TRANSFER_BUFFER_SIZE);
+
+ memcpy(urb->transfer_buffer, current_position, transfer_size);
+ /* usb_serial_debug_data (__FILE__, __func__, transfer_size, urb->transfer_buffer); */
+
+ /* fill urb with data and submit */
+ minor = port->serial->minor;
+ if (minor == SERIAL_TTY_NO_MINOR)
+ minor = 0;
+ if ((ATEN2011_serial->ATEN2011_spectrum_2or4ports == 2)
+ && (((__u16) port->number - (__u16) (minor)) != 0)) {
+ usb_fill_bulk_urb(urb, ATEN2011_serial->serial->dev,
+ usb_sndbulkpipe(ATEN2011_serial->serial->dev,
+ (port->
+ bulk_out_endpointAddress) +
+ 2), urb->transfer_buffer,
+ transfer_size,
+ ATEN2011_bulk_out_data_callback,
+ ATEN2011_port);
+ } else
+
+ usb_fill_bulk_urb(urb,
+ ATEN2011_serial->serial->dev,
+ usb_sndbulkpipe(ATEN2011_serial->serial->dev,
+ port->
+ bulk_out_endpointAddress),
+ urb->transfer_buffer, transfer_size,
+ ATEN2011_bulk_out_data_callback,
+ ATEN2011_port);
+
+ data1 = urb->transfer_buffer;
+ dbg("bulkout endpoint is %d", port->bulk_out_endpointAddress);
+ /* for(i=0;i < urb->actual_length;i++) */
+ /* dbg("Data is %c ",data1[i]); */
+
+ /* send it down the pipe */
+ status = usb_submit_urb(urb, GFP_ATOMIC);
+
+ if (status) {
+ err("%s - usb_submit_urb(write bulk) failed with status = %d",
+ __func__, status);
+ bytes_sent = status;
+ goto exit;
+ }
+ bytes_sent = transfer_size;
+ ATEN2011_port->icount.tx += transfer_size;
+ dbg("ATEN2011_port->icount.tx is %d:", ATEN2011_port->icount.tx);
+
+exit:
+ return bytes_sent;
+}
+
+static void ATEN2011_throttle(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct ATENINTL_port *ATEN2011_port;
+ int status;
+
+ dbg("- port %d", port->number);
+
+ ATEN2011_port = usb_get_serial_port_data(port);
+
+ if (ATEN2011_port == NULL)
+ return;
+
+ if (!ATEN2011_port->open) {
+ dbg("%s", "port not opened");
+ return;
+ }
+
+ dbg("%s", "Entering .......... ");
+
+ if (!tty) {
+ dbg("%s - no tty available", __func__);
+ return;
+ }
+
+ /* if we are implementing XON/XOFF, send the stop character */
+ if (I_IXOFF(tty)) {
+ unsigned char stop_char = STOP_CHAR(tty);
+ status = ATEN2011_write(tty, port, &stop_char, 1);
+ if (status <= 0)
+ return;
+ }
+
+ /* if we are implementing RTS/CTS, toggle that line */
+ if (tty->termios->c_cflag & CRTSCTS) {
+ ATEN2011_port->shadowMCR &= ~MCR_RTS;
+ status = set_uart_reg(port, MODEM_CONTROL_REGISTER,
+ ATEN2011_port->shadowMCR);
+ if (status < 0)
+ return;
+ }
+
+ return;
+}
+
+static void ATEN2011_unthrottle(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ int status;
+ struct ATENINTL_port *ATEN2011_port = usb_get_serial_port_data(port);
+
+ if (ATEN2011_port == NULL)
+ return;
+
+ if (!ATEN2011_port->open) {
+ dbg("%s - port not opened", __func__);
+ return;
+ }
+
+ dbg("%s", "Entering .......... ");
+
+ if (!tty) {
+ dbg("%s - no tty available", __func__);
+ return;
+ }
+
+ /* if we are implementing XON/XOFF, send the start character */
+ if (I_IXOFF(tty)) {
+ unsigned char start_char = START_CHAR(tty);
+ status = ATEN2011_write(tty, port, &start_char, 1);
+ if (status <= 0)
+ return;
+ }
+
+ /* if we are implementing RTS/CTS, toggle that line */
+ if (tty->termios->c_cflag & CRTSCTS) {
+ ATEN2011_port->shadowMCR |= MCR_RTS;
+ status = set_uart_reg(port, MODEM_CONTROL_REGISTER,
+ ATEN2011_port->shadowMCR);
+ if (status < 0)
+ return;
+ }
+
+ return;
+}
+
+static int ATEN2011_tiocmget(struct tty_struct *tty, struct file *file)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct ATENINTL_port *ATEN2011_port;
+ unsigned int result;
+ __u16 msr;
+ __u16 mcr;
+ /* unsigned int mcr; */
+ int status = 0;
+ ATEN2011_port = usb_get_serial_port_data(port);
+
+ dbg("%s - port %d", __func__, port->number);
+
+ if (ATEN2011_port == NULL)
+ return -ENODEV;
+
+ status = get_uart_reg(port, MODEM_STATUS_REGISTER, &msr);
+ status = get_uart_reg(port, MODEM_CONTROL_REGISTER, &mcr);
+ /* mcr = ATEN2011_port->shadowMCR; */
+ /* COMMENT2: the Fallowing three line are commented for updating only MSR values */
+ result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0)
+ | ((mcr & MCR_RTS) ? TIOCM_RTS : 0)
+ | ((mcr & MCR_LOOPBACK) ? TIOCM_LOOP : 0)
+ | ((msr & ATEN2011_MSR_CTS) ? TIOCM_CTS : 0)
+ | ((msr & ATEN2011_MSR_CD) ? TIOCM_CAR : 0)
+ | ((msr & ATEN2011_MSR_RI) ? TIOCM_RI : 0)
+ | ((msr & ATEN2011_MSR_DSR) ? TIOCM_DSR : 0);
+
+ dbg("%s - 0x%04X", __func__, result);
+
+ return result;
+}
+
+static int ATEN2011_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct ATENINTL_port *ATEN2011_port;
+ unsigned int mcr;
+ unsigned int status;
+
+ dbg("%s - port %d", __func__, port->number);
+
+ ATEN2011_port = usb_get_serial_port_data(port);
+
+ if (ATEN2011_port == NULL)
+ return -ENODEV;
+
+ mcr = ATEN2011_port->shadowMCR;
+ if (clear & TIOCM_RTS)
+ mcr &= ~MCR_RTS;
+ if (clear & TIOCM_DTR)
+ mcr &= ~MCR_DTR;
+ if (clear & TIOCM_LOOP)
+ mcr &= ~MCR_LOOPBACK;
+
+ if (set & TIOCM_RTS)
+ mcr |= MCR_RTS;
+ if (set & TIOCM_DTR)
+ mcr |= MCR_DTR;
+ if (set & TIOCM_LOOP)
+ mcr |= MCR_LOOPBACK;
+
+ ATEN2011_port->shadowMCR = mcr;
+
+ status = set_uart_reg(port, MODEM_CONTROL_REGISTER, mcr);
+ if (status < 0) {
+ dbg("setting MODEM_CONTROL_REGISTER Failed");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void ATEN2011_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port,
+ struct ktermios *old_termios)
+{
+ int status;
+ unsigned int cflag;
+ struct usb_serial *serial;
+ struct ATENINTL_port *ATEN2011_port;
+
+ dbg("ATEN2011_set_termios: START");
+
+ serial = port->serial;
+
+ ATEN2011_port = usb_get_serial_port_data(port);
+
+ if (ATEN2011_port == NULL)
+ return;
+
+ if (!ATEN2011_port->open) {
+ dbg("%s - port not opened", __func__);
+ return;
+ }
+
+ dbg("%s", "setting termios - ");
+
+ cflag = tty->termios->c_cflag;
+
+ if (!cflag) {
+ dbg("%s %s", __func__, "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))) {
+ dbg("%s", "Nothing to change");
+ return;
+ }
+ }
+
+ dbg("%s - clfag %08x iflag %08x", __func__,
+ tty->termios->c_cflag, RELEVANT_IFLAG(tty->termios->c_iflag));
+
+ if (old_termios) {
+ dbg("%s - old clfag %08x old iflag %08x", __func__,
+ old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag));
+ }
+
+ dbg("%s - port %d", __func__, port->number);
+
+ /* change the port settings to the new ones specified */
+
+ ATEN2011_change_port_settings(tty, ATEN2011_port, old_termios);
+
+ if (!ATEN2011_port->read_urb) {
+ dbg("%s", "URB KILLED !!!!!");
+ return;
+ }
+
+ if (ATEN2011_port->read_urb->status != -EINPROGRESS) {
+ ATEN2011_port->read_urb->dev = serial->dev;
+ status = usb_submit_urb(ATEN2011_port->read_urb, GFP_ATOMIC);
+ if (status) {
+ dbg
+ (" usb_submit_urb(read bulk) failed, status = %d",
+ status);
+ }
+ }
+ return;
+}
+
+static int get_lsr_info(struct tty_struct *tty,
+ struct ATENINTL_port *ATEN2011_port,
+ unsigned int __user *value)
+{
+ int count;
+ unsigned int result = 0;
+
+ count = ATEN2011_chars_in_buffer(tty);
+ if (count == 0) {
+ dbg("%s -- Empty", __func__);
+ result = TIOCSER_TEMT;
+ }
+
+ if (copy_to_user(value, &result, sizeof(int)))
+ return -EFAULT;
+ return 0;
+}
+
+static int get_number_bytes_avail(struct tty_struct *tty,
+ struct ATENINTL_port *ATEN2011_port,
+ unsigned int __user *value)
+{
+ unsigned int result = 0;
+
+ if (!tty)
+ return -ENOIOCTLCMD;
+
+ result = tty->read_cnt;
+
+ dbg("%s(%d) = %d", __func__, ATEN2011_port->port->number, result);
+ if (copy_to_user(value, &result, sizeof(int)))
+ return -EFAULT;
+
+ return -ENOIOCTLCMD;
+}
+
+static int set_modem_info(struct ATENINTL_port *ATEN2011_port, unsigned int cmd,
+ unsigned int __user *value)
+{
+ unsigned int mcr;
+ unsigned int arg;
+ __u16 Data;
+ int status;
+ struct usb_serial_port *port;
+
+ if (ATEN2011_port == NULL)
+ return -1;
+
+ port = (struct usb_serial_port *)ATEN2011_port->port;
+
+ mcr = ATEN2011_port->shadowMCR;
+
+ if (copy_from_user(&arg, value, sizeof(int)))
+ return -EFAULT;
+
+ switch (cmd) {
+ case TIOCMBIS:
+ if (arg & TIOCM_RTS)
+ mcr |= MCR_RTS;
+ if (arg & TIOCM_DTR)
+ mcr |= MCR_RTS;
+ if (arg & TIOCM_LOOP)
+ mcr |= MCR_LOOPBACK;
+ break;
+
+ case TIOCMBIC:
+ if (arg & TIOCM_RTS)
+ mcr &= ~MCR_RTS;
+ if (arg & TIOCM_DTR)
+ mcr &= ~MCR_RTS;
+ if (arg & TIOCM_LOOP)
+ mcr &= ~MCR_LOOPBACK;
+ break;
+
+ case TIOCMSET:
+ /* turn off the RTS and DTR and LOOPBACK
+ * and then only turn on what was asked to */
+ mcr &= ~(MCR_RTS | MCR_DTR | MCR_LOOPBACK);
+ mcr |= ((arg & TIOCM_RTS) ? MCR_RTS : 0);
+ mcr |= ((arg & TIOCM_DTR) ? MCR_DTR : 0);
+ mcr |= ((arg & TIOCM_LOOP) ? MCR_LOOPBACK : 0);
+ break;
+ }
+
+ ATEN2011_port->shadowMCR = mcr;
+
+ Data = ATEN2011_port->shadowMCR;
+ status = set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+ if (status < 0) {
+ dbg("setting MODEM_CONTROL_REGISTER Failed");
+ return -1;
+ }
+
+ return 0;
+}
+
+static int get_modem_info(struct ATENINTL_port *ATEN2011_port,
+ unsigned int __user *value)
+{
+ unsigned int result = 0;
+ __u16 msr;
+ unsigned int mcr = ATEN2011_port->shadowMCR;
+ int status;
+
+ status = get_uart_reg(ATEN2011_port->port, MODEM_STATUS_REGISTER, &msr);
+ result = ((mcr & MCR_DTR) ? TIOCM_DTR : 0) /* 0x002 */
+ |((mcr & MCR_RTS) ? TIOCM_RTS : 0) /* 0x004 */
+ |((msr & ATEN2011_MSR_CTS) ? TIOCM_CTS : 0) /* 0x020 */
+ |((msr & ATEN2011_MSR_CD) ? TIOCM_CAR : 0) /* 0x040 */
+ |((msr & ATEN2011_MSR_RI) ? TIOCM_RI : 0) /* 0x080 */
+ |((msr & ATEN2011_MSR_DSR) ? TIOCM_DSR : 0); /* 0x100 */
+
+ dbg("%s -- %x", __func__, result);
+
+ if (copy_to_user(value, &result, sizeof(int)))
+ return -EFAULT;
+ return 0;
+}
+
+static int get_serial_info(struct ATENINTL_port *ATEN2011_port,
+ struct serial_struct __user *retinfo)
+{
+ struct serial_struct tmp;
+
+ if (ATEN2011_port == NULL)
+ return -1;
+
+ if (!retinfo)
+ return -EFAULT;
+
+ memset(&tmp, 0, sizeof(tmp));
+
+ tmp.type = PORT_16550A;
+ tmp.line = ATEN2011_port->port->serial->minor;
+ if (tmp.line == SERIAL_TTY_NO_MINOR)
+ tmp.line = 0;
+ tmp.port = ATEN2011_port->port->number;
+ tmp.irq = 0;
+ tmp.flags = ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ;
+ tmp.xmit_fifo_size = NUM_URBS * URB_TRANSFER_BUFFER_SIZE;
+ tmp.baud_base = 9600;
+ tmp.close_delay = 5 * HZ;
+ tmp.closing_wait = 30 * HZ;
+
+ if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
+ return -EFAULT;
+ return 0;
+}
+
+static int ATEN2011_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct ATENINTL_port *ATEN2011_port;
+ struct async_icount cnow;
+ struct async_icount cprev;
+ struct serial_icounter_struct icount;
+ int ATENret = 0;
+ unsigned int __user *user_arg = (unsigned int __user *)arg;
+
+ ATEN2011_port = usb_get_serial_port_data(port);
+
+ if (ATEN2011_port == NULL)
+ return -1;
+
+ dbg("%s - port %d, cmd = 0x%x", __func__, port->number, cmd);
+
+ switch (cmd) {
+ /* return number of bytes available */
+
+ case TIOCINQ:
+ dbg("%s (%d) TIOCINQ", __func__, port->number);
+ return get_number_bytes_avail(tty, ATEN2011_port, user_arg);
+ break;
+
+ case TIOCOUTQ:
+ dbg("%s (%d) TIOCOUTQ", __func__, port->number);
+ return put_user(ATEN2011_chars_in_buffer(tty), user_arg);
+ break;
+
+ case TIOCSERGETLSR:
+ dbg("%s (%d) TIOCSERGETLSR", __func__, port->number);
+ return get_lsr_info(tty, ATEN2011_port, user_arg);
+ return 0;
+
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __func__,
+ port->number);
+ ATENret = set_modem_info(ATEN2011_port, cmd, user_arg);
+ return ATENret;
+
+ case TIOCMGET:
+ dbg("%s (%d) TIOCMGET", __func__, port->number);
+ return get_modem_info(ATEN2011_port, user_arg);
+
+ case TIOCGSERIAL:
+ dbg("%s (%d) TIOCGSERIAL", __func__, port->number);
+ return get_serial_info(ATEN2011_port,
+ (struct serial_struct __user *)arg);
+
+ case TIOCSSERIAL:
+ dbg("%s (%d) TIOCSSERIAL", __func__, port->number);
+ break;
+
+ case TIOCMIWAIT:
+ dbg("%s (%d) TIOCMIWAIT", __func__, port->number);
+ cprev = ATEN2011_port->icount;
+ while (1) {
+ /* see if a signal did it */
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ cnow = ATEN2011_port->icount;
+ if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
+ cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
+ return -EIO; /* no change => error */
+ if (((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
+ ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
+ ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
+ ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts))) {
+ return 0;
+ }
+ cprev = cnow;
+ }
+ /* NOTREACHED */
+ break;
+
+ case TIOCGICOUNT:
+ cnow = ATEN2011_port->icount;
+ icount.cts = cnow.cts;
+ icount.dsr = cnow.dsr;
+ icount.rng = cnow.rng;
+ icount.dcd = cnow.dcd;
+ icount.rx = cnow.rx;
+ icount.tx = cnow.tx;
+ icount.frame = cnow.frame;
+ icount.overrun = cnow.overrun;
+ icount.parity = cnow.parity;
+ icount.brk = cnow.brk;
+ icount.buf_overrun = cnow.buf_overrun;
+
+ dbg("%s (%d) TIOCGICOUNT RX=%d, TX=%d", __func__,
+ port->number, icount.rx, icount.tx);
+ if (copy_to_user((void __user *)arg, &icount, sizeof(icount)))
+ return -EFAULT;
+ return 0;
+
+ default:
+ break;
+ }
+
+ return -ENOIOCTLCMD;
+}
+
+static int ATEN2011_calc_baud_rate_divisor(int baudRate, int *divisor,
+ __u16 *clk_sel_val)
+{
+ dbg("%s - %d", __func__, baudRate);
+
+ if (baudRate <= 115200) {
+ *divisor = 115200 / baudRate;
+ *clk_sel_val = 0x0;
+ }
+ if ((baudRate > 115200) && (baudRate <= 230400)) {
+ *divisor = 230400 / baudRate;
+ *clk_sel_val = 0x10;
+ } else if ((baudRate > 230400) && (baudRate <= 403200)) {
+ *divisor = 403200 / baudRate;
+ *clk_sel_val = 0x20;
+ } else if ((baudRate > 403200) && (baudRate <= 460800)) {
+ *divisor = 460800 / baudRate;
+ *clk_sel_val = 0x30;
+ } else if ((baudRate > 460800) && (baudRate <= 806400)) {
+ *divisor = 806400 / baudRate;
+ *clk_sel_val = 0x40;
+ } else if ((baudRate > 806400) && (baudRate <= 921600)) {
+ *divisor = 921600 / baudRate;
+ *clk_sel_val = 0x50;
+ } else if ((baudRate > 921600) && (baudRate <= 1572864)) {
+ *divisor = 1572864 / baudRate;
+ *clk_sel_val = 0x60;
+ } else if ((baudRate > 1572864) && (baudRate <= 3145728)) {
+ *divisor = 3145728 / baudRate;
+ *clk_sel_val = 0x70;
+ }
+ return 0;
+}
+
+static int ATEN2011_send_cmd_write_baud_rate(struct ATENINTL_port
+ *ATEN2011_port, int baudRate)
+{
+ int divisor = 0;
+ int status;
+ __u16 Data;
+ unsigned char number;
+ __u16 clk_sel_val;
+ struct usb_serial_port *port;
+ int minor;
+
+ if (ATEN2011_port == NULL)
+ return -1;
+
+ port = (struct usb_serial_port *)ATEN2011_port->port;
+
+ dbg("%s", "Entering .......... ");
+
+ minor = ATEN2011_port->port->serial->minor;
+ if (minor == SERIAL_TTY_NO_MINOR)
+ minor = 0;
+ number = ATEN2011_port->port->number - minor;
+
+ dbg("%s - port = %d, baud = %d", __func__,
+ ATEN2011_port->port->number, baudRate);
+ /* reset clk_uart_sel in spregOffset */
+ if (baudRate > 115200) {
+#ifdef HW_flow_control
+ /*
+ * NOTE: need to see the pther register to modify
+ * setting h/w flow control bit to 1;
+ */
+ /* Data = ATEN2011_port->shadowMCR; */
+ Data = 0x2b;
+ ATEN2011_port->shadowMCR = Data;
+ status = set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+ if (status < 0) {
+ dbg("Writing spreg failed in set_serial_baud");
+ return -1;
+ }
+#endif
+
+ } else {
+#ifdef HW_flow_control
+ /* setting h/w flow control bit to 0; */
+ /* Data = ATEN2011_port->shadowMCR; */
+ Data = 0xb;
+ ATEN2011_port->shadowMCR = Data;
+ status = set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+ if (status < 0) {
+ dbg("Writing spreg failed in set_serial_baud");
+ return -1;
+ }
+#endif
+
+ }
+
+ if (1) /* baudRate <= 115200) */ {
+ clk_sel_val = 0x0;
+ Data = 0x0;
+ status =
+ ATEN2011_calc_baud_rate_divisor(baudRate, &divisor,
+ &clk_sel_val);
+ status = get_reg_sync(port, ATEN2011_port->SpRegOffset, &Data);
+ if (status < 0) {
+ dbg("reading spreg failed in set_serial_baud");
+ return -1;
+ }
+ Data = (Data & 0x8f) | clk_sel_val;
+ status = set_reg_sync(port, ATEN2011_port->SpRegOffset, Data);
+ if (status < 0) {
+ dbg("Writing spreg failed in set_serial_baud");
+ return -1;
+ }
+ /* Calculate the Divisor */
+
+ if (status) {
+ err("%s - bad baud rate", __func__);
+ dbg("%s", "bad baud rate");
+ return status;
+ }
+ /* Enable access to divisor latch */
+ Data = ATEN2011_port->shadowLCR | SERIAL_LCR_DLAB;
+ ATEN2011_port->shadowLCR = Data;
+ set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
+
+ /* Write the divisor */
+ Data = (unsigned char)(divisor & 0xff);
+ dbg("set_serial_baud Value to write DLL is %x", Data);
+ set_uart_reg(port, DIVISOR_LATCH_LSB, Data);
+
+ Data = (unsigned char)((divisor & 0xff00) >> 8);
+ dbg("set_serial_baud Value to write DLM is %x", Data);
+ set_uart_reg(port, DIVISOR_LATCH_MSB, Data);
+
+ /* Disable access to divisor latch */
+ Data = ATEN2011_port->shadowLCR & ~SERIAL_LCR_DLAB;
+ ATEN2011_port->shadowLCR = Data;
+ set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
+
+ }
+
+ return status;
+}
+
+static void ATEN2011_change_port_settings(struct tty_struct *tty,
+ struct ATENINTL_port *ATEN2011_port,
+ struct ktermios *old_termios)
+{
+ int baud;
+ unsigned cflag;
+ unsigned iflag;
+ __u8 lData;
+ __u8 lParity;
+ __u8 lStop;
+ int status;
+ __u16 Data;
+ struct usb_serial_port *port;
+ struct usb_serial *serial;
+
+ if (ATEN2011_port == NULL)
+ return;
+
+ port = (struct usb_serial_port *)ATEN2011_port->port;
+
+ serial = port->serial;
+
+ dbg("%s - port %d", __func__, ATEN2011_port->port->number);
+
+ if (!ATEN2011_port->open) {
+ dbg("%s - port not opened", __func__);
+ return;
+ }
+
+ if ((!tty) || (!tty->termios)) {
+ dbg("%s - no tty structures", __func__);
+ return;
+ }
+
+ dbg("%s", "Entering .......... ");
+
+ lData = LCR_BITS_8;
+ lStop = LCR_STOP_1;
+ lParity = LCR_PAR_NONE;
+
+ cflag = tty->termios->c_cflag;
+ iflag = tty->termios->c_iflag;
+
+ /* Change the number of bits */
+
+ /* COMMENT1: the below Line"if(cflag & CSIZE)" is added for the errors we get for serial loop data test i.e serial_loopback.pl -v */
+ /* if(cflag & CSIZE) */
+ {
+ switch (cflag & CSIZE) {
+ case CS5:
+ lData = LCR_BITS_5;
+ break;
+
+ case CS6:
+ lData = LCR_BITS_6;
+ break;
+
+ case CS7:
+ lData = LCR_BITS_7;
+ break;
+ default:
+ case CS8:
+ lData = LCR_BITS_8;
+ break;
+ }
+ }
+ /* Change the Parity bit */
+ if (cflag & PARENB) {
+ if (cflag & PARODD) {
+ lParity = LCR_PAR_ODD;
+ dbg("%s - parity = odd", __func__);
+ } else {
+ lParity = LCR_PAR_EVEN;
+ dbg("%s - parity = even", __func__);
+ }
+
+ } else {
+ dbg("%s - parity = none", __func__);
+ }
+
+ if (cflag & CMSPAR)
+ lParity = lParity | 0x20;
+
+ /* Change the Stop bit */
+ if (cflag & CSTOPB) {
+ lStop = LCR_STOP_2;
+ dbg("%s - stop bits = 2", __func__);
+ } else {
+ lStop = LCR_STOP_1;
+ dbg("%s - stop bits = 1", __func__);
+ }
+
+ /* Update the LCR with the correct value */
+ ATEN2011_port->shadowLCR &=
+ ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);
+ ATEN2011_port->shadowLCR |= (lData | lParity | lStop);
+
+ dbg
+ ("ATEN2011_change_port_settings ATEN2011_port->shadowLCR is %x",
+ ATEN2011_port->shadowLCR);
+ /* Disable Interrupts */
+ Data = 0x00;
+ set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
+
+ Data = 0x00;
+ set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
+
+ Data = 0xcf;
+ set_uart_reg(port, FIFO_CONTROL_REGISTER, Data);
+
+ /* Send the updated LCR value to the ATEN2011 */
+ Data = ATEN2011_port->shadowLCR;
+
+ set_uart_reg(port, LINE_CONTROL_REGISTER, Data);
+
+ Data = 0x00b;
+ ATEN2011_port->shadowMCR = Data;
+ set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+ Data = 0x00b;
+ set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+
+ /* set up the MCR register and send it to the ATEN2011 */
+
+ ATEN2011_port->shadowMCR = MCR_MASTER_IE;
+ if (cflag & CBAUD)
+ ATEN2011_port->shadowMCR |= (MCR_DTR | MCR_RTS);
+
+ if (cflag & CRTSCTS)
+ ATEN2011_port->shadowMCR |= (MCR_XON_ANY);
+ else
+ ATEN2011_port->shadowMCR &= ~(MCR_XON_ANY);
+
+ Data = ATEN2011_port->shadowMCR;
+ set_uart_reg(port, MODEM_CONTROL_REGISTER, Data);
+
+ /* Determine divisor based on baud rate */
+ baud = tty_get_baud_rate(tty);
+
+ if (!baud) {
+ /* pick a default, any default... */
+ dbg("%s", "Picked default baud...");
+ baud = 9600;
+ }
+
+ dbg("%s - baud rate = %d", __func__, baud);
+ status = ATEN2011_send_cmd_write_baud_rate(ATEN2011_port, baud);
+
+ /* Enable Interrupts */
+ Data = 0x0c;
+ set_uart_reg(port, INTERRUPT_ENABLE_REGISTER, Data);
+
+ if (ATEN2011_port->read_urb->status != -EINPROGRESS) {
+ ATEN2011_port->read_urb->dev = serial->dev;
+
+ status = usb_submit_urb(ATEN2011_port->read_urb, GFP_ATOMIC);
+
+ if (status) {
+ dbg
+ (" usb_submit_urb(read bulk) failed, status = %d",
+ status);
+ }
+ }
+ dbg
+ ("ATEN2011_change_port_settings ATEN2011_port->shadowLCR is End %x",
+ ATEN2011_port->shadowLCR);
+
+ return;
+}
+
+static int ATEN2011_calc_num_ports(struct usb_serial *serial)
+{
+
+ __u16 Data = 0x00;
+ int ret = 0;
+ int ATEN2011_2or4ports;
+ ret = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ ATEN_RDREQ, ATEN_RD_RTYPE, 0, GPIO_REGISTER,
+ &Data, VENDOR_READ_LENGTH, ATEN_WDR_TIMEOUT);
+
+/* ghostgum: here is where the problem appears to bet */
+/* Which of the following are needed? */
+/* Greg used the serial->type->num_ports=2 */
+/* But the code in the ATEN2011_open relies on serial->num_ports=2 */
+ if ((Data & 0x01) == 0) {
+ ATEN2011_2or4ports = 2;
+ serial->type->num_ports = 2;
+ serial->num_ports = 2;
+ }
+ /* else if(serial->interface->cur_altsetting->desc.bNumEndpoints == 9) */
+ else {
+ ATEN2011_2or4ports = 4;
+ serial->type->num_ports = 4;
+ serial->num_ports = 4;
+
+ }
+
+ return ATEN2011_2or4ports;
+}
+
+static int ATEN2011_startup(struct usb_serial *serial)
+{
+ struct ATENINTL_serial *ATEN2011_serial;
+ struct ATENINTL_port *ATEN2011_port;
+ struct usb_device *dev;
+ int i, status;
+ int minor;
+
+ __u16 Data;
+ dbg("%s", " ATEN2011_startup :entering..........");
+
+ if (!serial) {
+ dbg("%s", "Invalid Handler");
+ return -1;
+ }
+
+ dev = serial->dev;
+
+ dbg("%s", "Entering...");
+
+ /* create our private serial structure */
+ ATEN2011_serial = kzalloc(sizeof(struct ATENINTL_serial), GFP_KERNEL);
+ if (ATEN2011_serial == NULL) {
+ err("%s - Out of memory", __func__);
+ return -ENOMEM;
+ }
+
+ /* resetting the private structure field values to zero */
+ memset(ATEN2011_serial, 0, sizeof(struct ATENINTL_serial));
+
+ ATEN2011_serial->serial = serial;
+ /* initilize status polling flag to 0 */
+ ATEN2011_serial->status_polling_started = 0;
+
+ usb_set_serial_data(serial, ATEN2011_serial);
+ ATEN2011_serial->ATEN2011_spectrum_2or4ports =
+ ATEN2011_calc_num_ports(serial);
+ /* we set up the pointers to the endpoints in the ATEN2011_open *
+ * function, as the structures aren't created yet. */
+
+ /* set up port private structures */
+ for (i = 0; i < serial->num_ports; ++i) {
+ ATEN2011_port =
+ kmalloc(sizeof(struct ATENINTL_port), GFP_KERNEL);
+ if (ATEN2011_port == NULL) {
+ err("%s - Out of memory", __func__);
+ usb_set_serial_data(serial, NULL);
+ kfree(ATEN2011_serial);
+ return -ENOMEM;
+ }
+ memset(ATEN2011_port, 0, sizeof(struct ATENINTL_port));
+
+ /*
+ * Initialize all port interrupt end point to port 0
+ * int endpoint. Our device has only one interrupt end point
+ * comman to all port
+ */
+ /* serial->port[i]->interrupt_in_endpointAddress = serial->port[0]->interrupt_in_endpointAddress; */
+
+ ATEN2011_port->port = serial->port[i];
+ usb_set_serial_port_data(serial->port[i], ATEN2011_port);
+
+ minor = serial->port[i]->serial->minor;
+ if (minor == SERIAL_TTY_NO_MINOR)
+ minor = 0;
+ ATEN2011_port->port_num =
+ ((serial->port[i]->number - minor) + 1);
+
+ if (ATEN2011_port->port_num == 1) {
+ ATEN2011_port->SpRegOffset = 0x0;
+ ATEN2011_port->ControlRegOffset = 0x1;
+ ATEN2011_port->DcrRegOffset = 0x4;
+ } else if ((ATEN2011_port->port_num == 2)
+ && (ATEN2011_serial->ATEN2011_spectrum_2or4ports ==
+ 4)) {
+ ATEN2011_port->SpRegOffset = 0x8;
+ ATEN2011_port->ControlRegOffset = 0x9;
+ ATEN2011_port->DcrRegOffset = 0x16;
+ } else if ((ATEN2011_port->port_num == 2)
+ && (ATEN2011_serial->ATEN2011_spectrum_2or4ports ==
+ 2)) {
+ ATEN2011_port->SpRegOffset = 0xa;
+ ATEN2011_port->ControlRegOffset = 0xb;
+ ATEN2011_port->DcrRegOffset = 0x19;
+ } else if ((ATEN2011_port->port_num == 3)
+ && (ATEN2011_serial->ATEN2011_spectrum_2or4ports ==
+ 4)) {
+ ATEN2011_port->SpRegOffset = 0xa;
+ ATEN2011_port->ControlRegOffset = 0xb;
+ ATEN2011_port->DcrRegOffset = 0x19;
+ } else if ((ATEN2011_port->port_num == 4)
+ && (ATEN2011_serial->ATEN2011_spectrum_2or4ports ==
+ 4)) {
+ ATEN2011_port->SpRegOffset = 0xc;
+ ATEN2011_port->ControlRegOffset = 0xd;
+ ATEN2011_port->DcrRegOffset = 0x1c;
+ }
+
+ usb_set_serial_port_data(serial->port[i], ATEN2011_port);
+
+ /* enable rx_disable bit in control register */
+
+ status = get_reg_sync(serial->port[i],
+ ATEN2011_port->ControlRegOffset, &Data);
+ if (status < 0) {
+ dbg("Reading ControlReg failed status-0x%x",
+ status);
+ break;
+ } else
+ dbg
+ ("ControlReg Reading success val is %x, status%d",
+ Data, status);
+ Data |= 0x08; /* setting driver done bit */
+ Data |= 0x04; /* sp1_bit to have cts change reflect in modem status reg */
+
+ /* Data |= 0x20; */ /* rx_disable bit */
+ status = set_reg_sync(serial->port[i],
+ ATEN2011_port->ControlRegOffset, Data);
+ if (status < 0) {
+ dbg
+ ("Writing ControlReg failed(rx_disable) status-0x%x",
+ status);
+ break;
+ } else
+ dbg
+ ("ControlReg Writing success(rx_disable) status%d",
+ status);
+
+ /*
+ * Write default values in DCR (i.e 0x01 in DCR0, 0x05 in DCR2
+ * and 0x24 in DCR3
+ */
+ Data = 0x01;
+ status = set_reg_sync(serial->port[i],
+ (__u16)(ATEN2011_port->DcrRegOffset + 0),
+ Data);
+ if (status < 0) {
+ dbg("Writing DCR0 failed status-0x%x", status);
+ break;
+ } else
+ dbg("DCR0 Writing success status%d", status);
+
+ Data = 0x05;
+ status = set_reg_sync(serial->port[i],
+ (__u16)(ATEN2011_port->DcrRegOffset + 1),
+ Data);
+ if (status < 0) {
+ dbg("Writing DCR1 failed status-0x%x", status);
+ break;
+ } else
+ dbg("DCR1 Writing success status%d", status);
+
+ Data = 0x24;
+ status = set_reg_sync(serial->port[i],
+ (__u16)(ATEN2011_port->DcrRegOffset + 2),
+ Data);
+ if (status < 0) {
+ dbg("Writing DCR2 failed status-0x%x", status);
+ break;
+ } else
+ dbg("DCR2 Writing success status%d", status);
+
+ /* write values in clkstart0x0 and clkmulti 0x20 */
+ Data = 0x0;
+ status = set_reg_sync(serial->port[i], CLK_START_VALUE_REGISTER,
+ Data);
+ if (status < 0) {
+ dbg
+ ("Writing CLK_START_VALUE_REGISTER failed status-0x%x",
+ status);
+ break;
+ } else
+ dbg
+ ("CLK_START_VALUE_REGISTER Writing success status%d",
+ status);
+
+ Data = 0x20;
+ status = set_reg_sync(serial->port[i], CLK_MULTI_REGISTER,
+ Data);
+ if (status < 0) {
+ dbg
+ ("Writing CLK_MULTI_REGISTER failed status-0x%x",
+ status);
+ break;
+ } else
+ dbg("CLK_MULTI_REGISTER Writing success status%d",
+ status);
+
+ /* Zero Length flag register */
+ if ((ATEN2011_port->port_num != 1)
+ && (ATEN2011_serial->ATEN2011_spectrum_2or4ports == 2)) {
+
+ Data = 0xff;
+ status = set_reg_sync(serial->port[i],
+ (__u16)(ZLP_REG1 + ((__u16)ATEN2011_port->port_num)),
+ Data);
+ dbg("ZLIP offset%x",
+ (__u16) (ZLP_REG1 +
+ ((__u16) ATEN2011_port->port_num)));
+ if (status < 0) {
+ dbg
+ ("Writing ZLP_REG%d failed status-0x%x",
+ i + 2, status);
+ break;
+ } else
+ dbg("ZLP_REG%d Writing success status%d",
+ i + 2, status);
+ } else {
+ Data = 0xff;
+ status = set_reg_sync(serial->port[i],
+ (__u16)(ZLP_REG1 + ((__u16)ATEN2011_port->port_num) - 0x1),
+ Data);
+ dbg("ZLIP offset%x",
+ (__u16) (ZLP_REG1 +
+ ((__u16) ATEN2011_port->port_num) -
+ 0x1));
+ if (status < 0) {
+ dbg
+ ("Writing ZLP_REG%d failed status-0x%x",
+ i + 1, status);
+ break;
+ } else
+ dbg("ZLP_REG%d Writing success status%d",
+ i + 1, status);
+
+ }
+ ATEN2011_port->control_urb = usb_alloc_urb(0, GFP_ATOMIC);
+ ATEN2011_port->ctrl_buf = kmalloc(16, GFP_KERNEL);
+
+ }
+
+ /* Zero Length flag enable */
+ Data = 0x0f;
+ status = set_reg_sync(serial->port[0], ZLP_REG5, Data);
+ if (status < 0) {
+ dbg("Writing ZLP_REG5 failed status-0x%x", status);
+ return -1;
+ } else
+ dbg("ZLP_REG5 Writing success status%d", status);
+
+ /* setting configuration feature to one */
+ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ (__u8) 0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5 * HZ);
+ return 0;
+}
+
+static void ATEN2011_shutdown(struct usb_serial *serial)
+{
+ int i;
+ struct ATENINTL_port *ATEN2011_port;
+
+ /* check for the ports to be closed,close the ports and disconnect */
+
+ /* free private structure allocated for serial port *
+ * stop reads and writes on all ports */
+
+ for (i = 0; i < serial->num_ports; ++i) {
+ ATEN2011_port = usb_get_serial_port_data(serial->port[i]);
+ kfree(ATEN2011_port->ctrl_buf);
+ usb_kill_urb(ATEN2011_port->control_urb);
+ kfree(ATEN2011_port);
+ usb_set_serial_port_data(serial->port[i], NULL);
+ }
+
+ /* free private structure allocated for serial device */
+
+ kfree(usb_get_serial_data(serial));
+ usb_set_serial_data(serial, NULL);
+}
+
+static struct usb_serial_driver aten_serial_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "aten2011",
+ },
+ .description = DRIVER_DESC,
+ .id_table = id_table,
+ .open = ATEN2011_open,
+ .close = ATEN2011_close,
+ .write = ATEN2011_write,
+ .write_room = ATEN2011_write_room,
+ .chars_in_buffer = ATEN2011_chars_in_buffer,
+ .throttle = ATEN2011_throttle,
+ .unthrottle = ATEN2011_unthrottle,
+ .calc_num_ports = ATEN2011_calc_num_ports,
+
+ .ioctl = ATEN2011_ioctl,
+ .set_termios = ATEN2011_set_termios,
+ .break_ctl = ATEN2011_break,
+ .tiocmget = ATEN2011_tiocmget,
+ .tiocmset = ATEN2011_tiocmset,
+ .attach = ATEN2011_startup,
+ .shutdown = ATEN2011_shutdown,
+ .read_bulk_callback = ATEN2011_bulk_in_callback,
+ .read_int_callback = ATEN2011_interrupt_callback,
+};
+
+static struct usb_driver aten_driver = {
+ .name = "aten2011",
+ .probe = usb_serial_probe,
+ .disconnect = usb_serial_disconnect,
+ .id_table = id_table,
+};
+
+static int __init aten_init(void)
+{
+ int retval;
+
+ /* Register with the usb serial */
+ retval = usb_serial_register(&aten_serial_driver);
+ if (retval)
+ return retval;
+
+ printk(KERN_INFO KBUILD_MODNAME ":"
+ DRIVER_DESC " " DRIVER_VERSION "\n");
+
+ /* Register with the usb */
+ retval = usb_register(&aten_driver);
+ if (retval)
+ usb_serial_deregister(&aten_serial_driver);
+
+ return retval;
+}
+
+static void __exit aten_exit(void)
+{
+ usb_deregister(&aten_driver);
+ usb_serial_deregister(&aten_serial_driver);
+}
+
+module_init(aten_init);
+module_exit(aten_exit);
+
+/* Module information */
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+MODULE_PARM_DESC(debug, "Debug enabled or not");
projects / linux-2.6-omap-h63xx.git / blobdiff