diff options
author | Greg Kroah-Hartman <gregkh@suse.de> | 2006-05-15 19:15:45 -0700 |
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committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-05-15 19:15:45 -0700 |
commit | c94aa05c67ae62e0478c200f8e1cf13227ea0ac5 (patch) | |
tree | 95e6eb485ad7c8f718d3f7ca71612d64ecb83875 /usb | |
parent | 2074a6f843b2c9d690e9af46b379a50d0c83384d (diff) | |
download | patches-c94aa05c67ae62e0478c200f8e1cf13227ea0ac5.tar.gz |
add mos7720 driver
Diffstat (limited to 'usb')
-rw-r--r-- | usb/usb-serial-mos7720.patch | 2172 |
1 files changed, 2172 insertions, 0 deletions
diff --git a/usb/usb-serial-mos7720.patch b/usb/usb-serial-mos7720.patch new file mode 100644 index 0000000000000..a4a116e16324c --- /dev/null +++ b/usb/usb-serial-mos7720.patch @@ -0,0 +1,2172 @@ +From: Greg Kroah-Hartman <gregkh@suse.de> +Subject: USB: add USB serial mos7720 driver + +Add support for Moschip 7720 USB dual port usb to serial device. + +This driver is originally based on the drivers/usb/io_edgeport.c driver. + +Cleaned up and forward ported by me. + +(yes, I know it still doesn't follow coding standard, am still fixing it up...) + +Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> + +--- + drivers/usb/serial/Kconfig | 10 + drivers/usb/serial/Makefile | 1 + drivers/usb/serial/mos7720.c | 2121 +++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 2132 insertions(+) + +--- gregkh-2.6.orig/drivers/usb/serial/Kconfig ++++ gregkh-2.6/drivers/usb/serial/Kconfig +@@ -422,6 +422,16 @@ config USB_SERIAL_MCT_U232 + To compile this driver as a module, choose M here: the + module will be called mct_u232. + ++config USB_SERIAL_MOS7720 ++ tristate "USB Moschip 7720 Single Port Serial Driver" ++ depends on USB_SERIAL ++ ---help--- ++ Say Y here if you want to use a USB Serial single port adapter from ++ Moschip Semiconductor Tech. ++ ++ To compile this driver as a module, choose M here: the ++ module will be called mos7720. ++ + config USB_SERIAL_NAVMAN + tristate "USB Navman GPS device" + depends on USB_SERIAL +--- gregkh-2.6.orig/drivers/usb/serial/Makefile ++++ gregkh-2.6/drivers/usb/serial/Makefile +@@ -34,6 +34,7 @@ obj-$(CONFIG_USB_SERIAL_KEYSPAN_PDA) += + obj-$(CONFIG_USB_SERIAL_KLSI) += kl5kusb105.o + obj-$(CONFIG_USB_SERIAL_KOBIL_SCT) += kobil_sct.o + obj-$(CONFIG_USB_SERIAL_MCT_U232) += mct_u232.o ++obj-$(CONFIG_USB_SERIAL_MOS7720) += mos7720.o + obj-$(CONFIG_USB_SERIAL_NAVMAN) += navman.o + obj-$(CONFIG_USB_SERIAL_OMNINET) += omninet.o + obj-$(CONFIG_USB_SERIAL_OPTION) += option.o +--- /dev/null ++++ gregkh-2.6/drivers/usb/serial/mos7720.c +@@ -0,0 +1,2121 @@ ++/************************************************************************* ++ *** Moschip Semiconductor Tech. Ltd. ++ *** -------------------------------------------------------------------- ++ *** ++ *** Module Name: Mos7720 ++ *** ++ *** File: mos7720.c ++ *** ++ *** File Revision: 1.0 ++ *** Author : VijayaKumar.G.N. (vijaykumar@aspirecom.net) ++ *** : AjayKumar (ajay@aspirecom.net) ++ *** ++ *** Leader : Gurudeva.N. (gurudev@aspirecom.net) ++ *** ++ Originally based on drivers/usb/serial/io_edgeport.c which is: ++ Copyright (C) 2000 Inside Out Networks, All rights reserved. ++ Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> ++ ++ *************************************************************************/ ++ ++#include <linux/config.h> ++#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/serial_reg.h> ++#include <linux/usb.h> ++#include <asm/uaccess.h> ++ ++static int debug; ++#include "usb-serial.h" ++ ++#define DPRINTK(fmt, args...) printk( "%s: " fmt, __FUNCTION__ , ## args) ++ ++/* ++ * Version Information ++ */ ++#define DRIVER_VERSION "1.0.0.4F" ++#define DRIVER_AUTHOR "Aspire Communications pvt Ltd." ++#define DRIVER_DESC "Moschip USB Serial Driver" ++ ++/* default urb timeout */ ++#define MOS_WDR_TIMEOUT (HZ * 5) ++ ++#define MOS_PORT1 0x0200 ++#define MOS_PORT2 0x0300 ++#define MOS_VENREG 0x0000 ++#define MOS_MAX_PORT 0x02 ++#define MOS_WRITE 0x0E ++#define MOS_READ 0x0D ++ ++/* 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 ++ ++#define NUM_URBS 16 /* URB Count */ ++#define URB_TRANSFER_BUFFER_SIZE 32 /* URB Size */ ++ ++/* This structure holds all of the local port information */ ++struct moschip_port ++{ ++ __s16 rxBytesAvail; /* the number of bytes that we need to read from this device */ ++ __s16 rxBytesRemaining; /* the number of port bytes left to read */ ++ char write_in_progress; /* TRUE while a write URB is outstanding */ ++ __u8 shadowLCR; /* last LCR value received */ ++ __u8 shadowMCR; /* last MCR value received */ ++ __u8 shadowMSR; /* last MSR value received */ ++ __u8 shadowLSR; /* last LSR value received */ ++ __u8 shadowXonChar; /* last value set as XON char in moschip */ ++ __u8 shadowXoffChar; /* last value set as XOFF char in moschip */ ++ __u8 validDataMask; ++ char open; ++ char chaseResponsePending; ++ wait_queue_head_t wait_chase; /* for handling sleeping while waiting for chase to finish */ ++ wait_queue_head_t wait_open; /* for handling sleeping while waiting for open to finish */ ++ wait_queue_head_t wait_command; /* for handling sleeping while waiting for command to finish */ ++ wait_queue_head_t delta_msr_wait; /* for handling sleeping while waiting for msr change to happen */ ++ struct async_icount icount; ++ struct usb_serial_port *port; /* loop back to the owner of this object */ ++ struct urb *write_urb_pool[NUM_URBS]; ++}; ++ ++ ++/* This structure holds all of the individual serial device information */ ++struct moschip_serial ++{ ++ int interrupt_started; ++}; ++ ++#define USB_VENDOR_ID_MOSCHIP 0x9710 ++#define MOSCHIP_DEVICE_ID_7720 0x7720 ++#define MOSCHIP_DEVICE_ID_7715 0x7715 ++ ++static struct usb_device_id moschip_port_id_table [] = { ++ { USB_DEVICE(USB_VENDOR_ID_MOSCHIP,MOSCHIP_DEVICE_ID_7720) }, ++ { } /* terminating entry */ ++}; ++MODULE_DEVICE_TABLE (usb, moschip_port_id_table); ++ ++/* function prototypes for the usbserial callbacks */ ++static int mos7720_chars_in_buffer (struct usb_serial_port *port); ++ ++ ++/* function prototypes for all of our local functions */ ++ ++static int calc_baud_rate_divisor (int baud_rate, int *divisor); ++static void change_port_settings (struct moschip_port *mos7720_port, struct termios *old_termios); ++ ++static void block_until_chase_response(struct moschip_port *mos7720_port); ++static void block_until_tx_empty(struct moschip_port *mos7720_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 set_serial_private(struct usb_serial *serial, struct moschip_serial *data) ++{ ++ usb_set_serial_data(serial, (void *)data ); ++} ++ ++static inline struct moschip_serial * get_serial_private(struct usb_serial *serial) ++{ ++ return (struct moschip_serial*) usb_get_serial_data(serial); ++} ++ ++static inline void set_port_private(struct usb_serial_port *port, struct moschip_port *data) ++{ ++ usb_set_serial_port_data(port, (void*)data ); ++} ++ ++static inline struct moschip_port * get_port_private(struct usb_serial_port *port) ++{ ++ return (struct moschip_port*) usb_get_serial_port_data(port); ++} ++ ++ ++/************************************************************************/ ++/************************************************************************/ ++/* 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 */ ++/************************************************************************/ ++/************************************************************************/ ++ ++/***************************************************************************** ++ * mos7720_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, ++ * ++ *****************************************************************************/ ++ ++static void mos7720_interrupt_callback (struct urb *urb,struct pt_regs *regs) ++{ ++ int result; ++ int length ; ++ __u32 *data ; ++ struct moschip_port *mos7720_port; ++ unsigned int status; ++ __u8 sp1,sp2,st; ++ ++ dbg("%s"," : Entering\n"); ++ ++ if (!urb) { ++ dbg("%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; ++ ++ mos7720_port= (struct moschip_port*)urb->context; ++ ++ if(!mos7720_port) ++ { ++ DPRINTK("%s","NULL mos7720_serial pointer \n"); ++ return ; ++ } ++ ++ /* Moschip get 4 bytes ++ * Byte 1 IIR Port 1 (port.number is 0) ++ * Byte 2 IIR Port 2 (port.number is 1) ++ * Byte 3 -------------- ++ * Byte 4 FIFO status for both */ ++ ++ if(length && length>4) ++ { ++ DPRINTK("%s \n","Wrong data !!!"); ++ return; ++ } ++ ++ status=*data; ++ ++ sp1=(status & 0xff000000)>>24; ++ sp2=(status & 0x00ff0000)>>16; ++ st =status & 0x000000ff; ++ ++ if((sp1 & 0x01) || (sp2 & 0x01)) ++ DPRINTK("No Interrupt !!!"); ++ /* No Interrupt Pending in both the ports */ ++ else ++ { ++ switch(sp1 & 0x0f) ++ { ++ case SERIAL_IIR_RLS: DPRINTK("Serial Port 1: Receiver status error or address bit detected in 9-bit mode\n"); ++ break; ++ case SERIAL_IIR_CTI: DPRINTK("Serial Port 1: Receiver time out\n"); ++ break; ++ case SERIAL_IIR_MS: DPRINTK("Serial Port 1: Modem status change\n"); ++ break; ++ } ++ ++ switch(sp2 & 0x0f) ++ { ++ case SERIAL_IIR_RLS: DPRINTK("Serial Port 2: Receiver status error or address bit detected in 9-bit mode\n"); ++ break; ++ case SERIAL_IIR_CTI: DPRINTK("Serial Port 2: Receiver time out\n"); ++ break; ++ case SERIAL_IIR_MS: DPRINTK("Serial Port 2: Modem status change\n"); ++ break; ++ } ++ } ++ ++exit: ++ ++ result = usb_submit_urb (urb, GFP_ATOMIC); ++ if (result) ++ { ++ dev_err(&urb->dev->dev, "%s - Error %d submitting control urb\n", __FUNCTION__, result); ++ } ++ ++ return; ++ ++} ++ ++/***************************************************************************** ++ * mos7720_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 mos7720_bulk_in_callback (struct urb *urb, struct pt_regs *regs) ++{ ++ int status; ++ unsigned char *data ; ++ struct usb_serial *serial; ++ struct usb_serial_port *port; ++ struct moschip_serial *mos7720_serial; ++ struct moschip_port *mos7720_port; ++ struct tty_struct *tty; ++ ++ if (urb->status) { ++ DPRINTK("nonzero read bulk status received: %d",urb->status); ++ return; ++ } ++ ++ mos7720_port = urb->context; ++ if(!mos7720_port) ++ { ++ DPRINTK("%s","NULL mos7720_port pointer \n"); ++ return ; ++ } ++ ++ port = mos7720_port->port; ++ ++ serial = port->serial; ++ ++ DPRINTK("%s\n","Entering... \n"); ++ ++ data = urb->transfer_buffer; ++ mos7720_serial = get_serial_private(serial); ++ ++ DPRINTK("%s","Entering ........... \n"); ++ ++ tty = port->tty; ++ if (tty && urb->actual_length) { ++ tty_buffer_request_room(tty, urb->actual_length); ++ tty_insert_flip_string(tty, data, urb->actual_length); ++ tty_flip_buffer_push(tty); ++ } ++ ++ if(!port->read_urb) ++ { ++ DPRINTK("%s","URB KILLED !!!\n"); ++ return; ++ } ++ ++ if(port->read_urb->status!=-EINPROGRESS) ++ { ++ port->read_urb->dev = serial->dev; ++ ++ status = usb_submit_urb(port->read_urb, GFP_ATOMIC); ++ ++ if (status) ++ { ++ DPRINTK(" usb_submit_urb(read bulk) failed, status = %d", status); ++ } ++ } ++} ++ ++/***************************************************************************** ++ * mos7720_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 mos7720_bulk_out_data_callback (struct urb *urb, struct pt_regs *regs) ++{ ++ struct moschip_port *mos7720_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; ++ } ++ ++ mos7720_port = (struct moschip_port *)urb->context; ++ if(!mos7720_port) ++ { ++ DPRINTK("%s","NULL mos7720_port pointer \n"); ++ return ; ++ } ++ ++ DPRINTK("%s \n","Entering ........."); ++ ++ tty = mos7720_port->port->tty; ++ ++ if (tty && mos7720_port->open) ++ { ++ /* let the tty driver wakeup if it has a special * ++ * write_wakeup function */ ++ ++ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) && tty->ldisc.write_wakeup) { ++ (tty->ldisc.write_wakeup)(tty); ++ } ++ ++ /* tell the tty driver that something has changed */ ++ wake_up_interruptible(&tty->write_wait); ++ } ++ ++ /* Release the Write URB */ ++ mos7720_port->write_in_progress = 0; ++ ++//schedule_work(&mos7720_port->port->work); ++ ++} ++ ++/***************************************************************************** ++ * SendMosCmd ++ * this function will be used for sending command to device ++ * Input : 5 Input ++ * pointer to the serial device, ++ * request type ++ * value ++ * register index ++ * pointer to data/buffer ++ *****************************************************************************/ ++ ++ ++static int SendMosCmd(struct usb_serial *serial, __u8 request, __u16 value, __u16 index, void *data) ++{ ++ int status; ++ unsigned int pipe; ++ __u8 requesttype; ++ __u16 size; ++ ++ size = 0x00; ++ ++ if (value < MOS_MAX_PORT) { ++ if (le16_to_cpu(serial->dev->descriptor.idProduct) == MOSCHIP_DEVICE_ID_7715) { ++ value = value*0x100+0x100; ++ } else { ++ value = value*0x100+0x200; ++ } ++ } else { ++ value = 0x0000; ++ if ((le16_to_cpu(serial->dev->descriptor.idProduct) == MOSCHIP_DEVICE_ID_7715) && ++ (index != 0x08)) { ++ DPRINTK("serial->product== MOSCHIP_DEVICE_ID_7715"); ++ //index = 0x01 ; ++ } ++ } ++ ++ if (request == MOS_WRITE) { ++ request = (__u8)MOS_WRITE; ++ requesttype = (__u8)0x40; ++ value = value + (__u16)*((unsigned char *)data); ++ data = NULL; ++ pipe = usb_sndctrlpipe(serial->dev, 0); ++ } else { ++ request = (__u8)MOS_READ; ++ requesttype = (__u8)0xC0; ++ size = 0x01; ++ pipe = usb_rcvctrlpipe(serial->dev,0); ++ } ++ ++ status = usb_control_msg(serial->dev, pipe, request, requesttype, ++ value, index, data, size, MOS_WDR_TIMEOUT); ++ ++ if (status < 0) ++ dbg("Command Write failed Value %x index %x\n",value,index); ++ ++ return status; ++} ++ ++ ++/************************************************************************/ ++/************************************************************************/ ++/* 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 */ ++/* 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 */ ++/************************************************************************/ ++/************************************************************************/ ++ ++ ++/***************************************************************************** ++ * Driver tty interface functions ++ *****************************************************************************/ ++ ++/***************************************************************************** ++ * 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. ++ *****************************************************************************/ ++ ++static int mos7720_open (struct usb_serial_port *port, struct file * filp) ++{ ++ int response; ++ char data; ++ int j; ++ struct usb_serial *serial; ++ struct usb_serial_port *port0; ++ struct urb *urb; ++ ++ struct moschip_serial *mos7720_serial; ++ struct moschip_port *mos7720_port; ++ ++ serial = port->serial; ++ ++ mos7720_port = get_port_private(port); ++ ++ if (mos7720_port == NULL) ++ return -ENODEV; ++ ++ port0 = serial->port[0]; ++ ++ mos7720_serial = get_serial_private(serial); ++ ++ if (mos7720_serial == NULL || port0 == NULL) ++ { ++ return -ENODEV; ++ } ++ ++ ++ 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,SLAB_ATOMIC); ++ mos7720_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 MCS7720 -- Write Init values to corresponding Registers ++ * ++ * Register Index ++ * 1 : IER ++ * 2 : FCR ++ * 3 : LCR ++ * 4 : MCR ++ * ++ * 0x08 : SP1/2 Control Reg ++ *****************************************************************************/ ++ ++ SendMosCmd(port->serial,MOS_READ,mos7720_port->port->number - mos7720_port->port->serial->minor, UART_LSR, &data); ++ DPRINTK("\nSS::%x LSR:%x\n",(unsigned int)mos7720_port,data); ++ ++ DPRINTK("%s", "Check:Sending Command .......... \n"); ++ ++ data = 0x02; ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,0x01, &data); ++ data = 0x02; ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,0x02, &data); ++ ++ data = 0x00; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x01, &data); ++ data = 0x00; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x02, &data); ++ ++ data = 0xCF; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x02, &data); ++ data = 0x03; ++ mos7720_port->shadowLCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x03, &data); ++ data = 0x0b; ++ mos7720_port->shadowMCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x04, &data); ++ data = 0x0b; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x04, &data); ++ ++ data = 0x00; ++ SendMosCmd(port->serial,MOS_READ,MOS_MAX_PORT,0x08, &data); ++ data = 0x00; ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,0x08, &data); ++ ++/* data = 0x00; ++ SendMosCmd(port->serial,MOS_READ,MOS_MAX_PORT,port->number - port->serial->minor + 1, &data); ++ data = 0x03; ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,port->number - port->serial->minor + 1, &data); ++ data = 0x00; ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,port->number - port->serial->minor + 1, &data); ++*/ ++ data = 0x00; ++ SendMosCmd(port->serial,MOS_READ,MOS_MAX_PORT,0x08, &data); ++ ++ data = data | (port->number - port->serial->minor + 1); ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,0x08, &data); ++ ++ data = 0x83; ++ mos7720_port->shadowLCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x03, &data); ++ data = 0x0c; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x00, &data); ++ data = 0x00; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x01, &data); ++ data = 0x03; ++ mos7720_port->shadowLCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x03, &data); ++ data = 0x0c; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x01, &data); ++ data = 0x0c; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x01, &data); ++ ++//Matrix ++ ++ /* 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 (port->tty) ++ port->tty->low_latency = 1; ++ /* see if we've set up our endpoint info yet * ++ * (can't set it up in mos7720_startup as the * ++ * structures were not set up at that time.) */ ++ ++ ++ if (!mos7720_serial->interrupt_started) { ++ DPRINTK("%s \n","Interrupt buffer NULL !!!"); ++ ++ /* not set up yet, so do it now */ ++ mos7720_serial->interrupt_started = 1; ++ ++ DPRINTK("%s \n","To Submit URB !!!"); ++ ++ /* set up our interrupt urb */ ++ usb_fill_int_urb(port0->interrupt_in_urb, serial->dev, ++ usb_rcvintpipe(serial->dev, ++ port->interrupt_in_endpointAddress), ++ port0->interrupt_in_buffer, ++ port0->interrupt_in_urb->transfer_buffer_length, ++ mos7720_interrupt_callback, mos7720_port, ++ port0->interrupt_in_urb->interval); ++ ++ /* start interrupt read for this mos7720 this interrupt * ++ * will continue as long as the mos7720 is connected */ ++ DPRINTK("%s \n","Submit URB over !!!"); ++ response = usb_submit_urb(port0->interrupt_in_urb, GFP_KERNEL); ++ if (response) ++ err("%s - Error %d submitting control urb", __FUNCTION__, response); ++ } ++ ++ /* set up our bulk in urb */ ++ usb_fill_bulk_urb(port->read_urb, serial->dev, ++ usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress), ++ port->bulk_in_buffer, ++ port->read_urb->transfer_buffer_length, ++ mos7720_bulk_in_callback, mos7720_port); ++ response = usb_submit_urb(port->read_urb, GFP_KERNEL); ++ if (response) ++ err("%s - Error %d submitting read urb", __FUNCTION__, response); ++ ++ /* initialize our wait queues */ ++ init_waitqueue_head(&mos7720_port->wait_open); ++ init_waitqueue_head(&mos7720_port->wait_chase); ++ init_waitqueue_head(&mos7720_port->delta_msr_wait); ++ init_waitqueue_head(&mos7720_port->wait_command); ++ ++ /* initialize our icount structure */ ++ memset (&(mos7720_port->icount), 0x00, sizeof(mos7720_port->icount)); ++ ++ /* initialize our port settings */ ++ mos7720_port->shadowMCR = UART_MCR_OUT2; /* Must set to enable ints! */ ++ mos7720_port->chaseResponsePending = 0; ++ /* send a open port command */ ++ mos7720_port->open = 1; ++ mos7720_port->rxBytesAvail = 0x0; ++ ++ ++ DPRINTK("\n\nusb_serial serial:%x mos7720_port:%x\nmos7720_serial:%x usb_serial_port port:%x\n\n",(unsigned int)serial,(unsigned int)mos7720_port,(unsigned int)mos7720_serial,(unsigned int)port); ++ ++ ++ return 0; ++} ++ ++/***************************************************************************** ++ * mos7720_close ++ * this function is called by the tty driver when a port is closed ++ *****************************************************************************/ ++ ++static void mos7720_close (struct usb_serial_port *port, struct file * filp) ++{ ++ struct usb_serial *serial; ++ struct moschip_serial *mos7720_serial; ++ struct moschip_port *mos7720_port; ++ char data; ++ int j; ++ ++ DPRINTK("%s\n","mos7720_close:entering..."); ++ ++ serial = port->serial; ++ ++ mos7720_serial = get_serial_private(serial); ++ mos7720_port = get_port_private(port); ++ ++ if ((mos7720_serial == NULL) || (mos7720_port == NULL)) ++ { ++ return; ++ } ++ ++ ++ for (j = 0; j < NUM_URBS; ++j) ++ usb_unlink_urb (mos7720_port->write_urb_pool[j]); ++ ++ ++ /* Freeing Write URBs*/ ++ for (j = 0; j < NUM_URBS; ++j) ++ { ++ if (mos7720_port->write_urb_pool[j]) ++ { ++ if (mos7720_port->write_urb_pool[j]->transfer_buffer) ++ kfree(mos7720_port->write_urb_pool[j]->transfer_buffer); ++ ++ usb_free_urb (mos7720_port->write_urb_pool[j]); ++ } ++ } ++ ++ ++ if (serial->dev) ++ { ++ /* flush and block until tx is empty*/ ++ block_until_tx_empty(mos7720_port); ++ } ++ ++ /* While closing port, shutdown all bulk read, write * ++ * and interrupt read if they exists */ ++ if (serial->dev) { ++ if (port->write_urb) { ++ DPRINTK("%s","Shutdown bulk write\n"); ++ usb_unlink_urb(port->write_urb); ++ } ++ if (port->read_urb) { ++ DPRINTK("%s","Shutdown bulk read\n"); ++ usb_unlink_urb(port->read_urb); ++ } ++ } ++ ++ ++ ++ ++ data = 0x00; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x04, &data); ++ ++ data = 0x00; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x01, &data); ++ ++ mos7720_port->open = 0; ++ ++ DPRINTK("%s \n","Leaving ............"); ++} ++ ++ ++/***************************************************************************** ++ * SerialBreak ++ * this function sends a break to the port ++ *****************************************************************************/ ++static void mos7720_break (struct usb_serial_port *port, int break_state) ++{ ++ unsigned char data; ++ struct usb_serial *serial; ++ struct moschip_serial *mos7720_serial; ++ struct moschip_port *mos7720_port; ++ ++ DPRINTK("%s \n","Entering ..........."); ++ ++ serial = port->serial; ++ ++ mos7720_serial = get_serial_private(serial); ++ mos7720_port = get_port_private(port); ++ ++ if ((mos7720_serial == NULL) || (mos7720_port == NULL)) { ++ return; ++ } ++ ++ /* flush and chase */ ++ mos7720_port->chaseResponsePending = 1; ++ ++ if (serial->dev) { ++ /* flush and block until tx is empty*/ ++ block_until_chase_response(mos7720_port); ++ } ++ ++ if (break_state == -1) { ++ data = mos7720_port->shadowLCR | UART_LCR_SBC; ++ } else { ++ data = mos7720_port->shadowLCR & ~UART_LCR_SBC; ++ } ++ ++ mos7720_port->shadowLCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x03, &data); ++ ++ return; ++} ++ ++ ++/************************************************************************ ++ * ++ * block_until_chase_response ++ * ++ * This function will block the close until one of the following: ++ * 1. Response to our Chase comes from mos7720 ++ * 2. A timout of 10 seconds without activity has expired ++ * (1K of mos7720 data @ 2400 baud ==> 4 sec to empty) ++ * ++ ************************************************************************/ ++ ++static void block_until_chase_response(struct moschip_port *mos7720_port) ++{ ++ int timeout = 1*HZ; ++ int wait = 10; ++ int count ; ++ ++ ++ while (1) ++ { ++ count = mos7720_chars_in_buffer(mos7720_port->port); ++ ++ /* Check for Buffer status */ ++ if (count <= 0) { ++ mos7720_port->chaseResponsePending = 0; ++ return; ++ } ++ ++ /* Block the thread for a while */ ++ interruptible_sleep_on_timeout (&mos7720_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; ++ } ++ } ++ ++} ++ ++ ++/************************************************************************ ++ * ++ * block_until_tx_empty ++ * ++ * This function will block the close until one of the following: ++ * 1. TX count are 0 ++ * 2. The mos7720 has stopped ++ * 3. A timout of 3 seconds without activity has expired ++ * ++ ************************************************************************/ ++static void block_until_tx_empty (struct moschip_port *mos7720_port) ++{ ++ int timeout = HZ/10; ++ int wait = 30; ++ int count; ++ ++ while (1) ++ { ++ ++ count = mos7720_chars_in_buffer(mos7720_port->port); ++ ++ /* Check for Buffer status */ ++ if(count<=0) ++ { ++ return; ++ } ++ ++ /* Block the thread for a while */ ++ interruptible_sleep_on_timeout (&mos7720_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; ++ } ++ } ++} ++ ++/***************************************************************************** ++ * mos7720_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. ++ *****************************************************************************/ ++ ++static int mos7720_write_room (struct usb_serial_port *port) ++{ ++ int i; ++ int room = 0; ++ struct moschip_port *mos7720_port; ++ ++ ++ DPRINTK("%s \n"," mos7720_write_room:entering ..........."); ++ ++ mos7720_port = get_port_private(port); ++ if (mos7720_port == NULL) ++ { ++ DPRINTK("%s \n","mos7720_break:leaving ..........."); ++ return -1; ++ } ++ ++ for (i = 0; i < NUM_URBS; ++i) ++ { ++ if (mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) ++ { ++ room += URB_TRANSFER_BUFFER_SIZE; ++ } ++ } ++ ++ dbg("%s - returns %d", __FUNCTION__, room); ++ return (room); ++ ++} ++ ++ ++/***************************************************************************** ++ * mos7720_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. ++ *****************************************************************************/ ++ ++static int mos7720_chars_in_buffer (struct usb_serial_port *port) ++{ ++ int i; ++ int chars = 0; ++ struct moschip_port *mos7720_port; ++ ++ DPRINTK("%s \n"," mos7720_chars_in_buffer:entering ..........."); ++ ++ mos7720_port = get_port_private(port); ++ if (mos7720_port == NULL) ++ { ++ DPRINTK("%s \n","mos7720_break:leaving ..........."); ++ return -1; ++ } ++ ++ for (i = 0; i < NUM_URBS; ++i) ++ { ++ if (mos7720_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. ++ *****************************************************************************/ ++ ++static int mos7720_write(struct usb_serial_port *port, const unsigned char *data, int count) ++{ ++ int status; ++ int i; ++ int bytes_sent = 0; ++ int transfer_size; ++ ++ struct moschip_port *mos7720_port; ++ struct usb_serial *serial; ++ struct moschip_serial *mos7720_serial; ++ struct urb *urb; ++ ++ const unsigned char *current_position = data; ++ ++ DPRINTK("%s \n","entering ..........."); ++ ++ serial = port->serial; ++ ++ mos7720_port = get_port_private(port); ++ if(mos7720_port==NULL) ++ { ++ DPRINTK("%s","mos7720_port is NULL\n"); ++ return -1; ++ } ++ ++ mos7720_serial =get_serial_private(serial); ++ if(mos7720_serial==NULL) ++ { ++ DPRINTK("%s","mos7720_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 (mos7720_port->write_urb_pool[i]->status != -EINPROGRESS) ++ { ++ urb = mos7720_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); ++ ++ memcpy (urb->transfer_buffer, current_position, transfer_size); ++ usb_serial_debug_data(debug, &port->dev, __FUNCTION__, transfer_size, urb->transfer_buffer); ++ ++ /* fill urb with data and submit */ ++ ++ usb_fill_bulk_urb (urb, ++ serial->dev, ++ usb_sndbulkpipe(serial->dev, ++ port->bulk_out_endpointAddress), ++ urb->transfer_buffer, ++ transfer_size, ++ mos7720_bulk_out_data_callback, ++ mos7720_port); ++ ++ ++ /* 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; ++ ++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. ++ *****************************************************************************/ ++ ++static void mos7720_throttle (struct usb_serial_port *port) ++{ ++ struct moschip_port *mos7720_port; ++ struct tty_struct *tty; ++ int status; ++ ++ DPRINTK("- port %d\n", port->number); ++ ++ mos7720_port = get_port_private(port); ++ ++ if (mos7720_port == NULL) ++ return; ++ ++ if (!mos7720_port->open) ++ { ++ DPRINTK("%s\n","port not opened"); ++ return; ++ } ++ ++ DPRINTK("%s","Entering .......... \n"); ++ ++ tty = port->tty; ++ 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); ++ status = mos7720_write(port, &stop_char, 1); ++ if (status <= 0) ++ { ++ return; ++ } ++ } ++ ++ /* if we are implementing RTS/CTS, toggle that line */ ++ if (tty->termios->c_cflag & CRTSCTS) ++ { ++ mos7720_port->shadowMCR &= ~UART_MCR_RTS; ++ status = SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor, UART_MCR, &mos7720_port->shadowMCR); ++ if (status != 0) ++ { ++ return; ++ } ++ } ++ ++ return; ++} ++ ++ ++/***************************************************************************** ++ * mos7720_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) ++ *****************************************************************************/ ++static void mos7720_unthrottle (struct usb_serial_port *port) ++{ ++ struct tty_struct *tty; ++ int status; ++ struct moschip_port *mos7720_port = get_port_private(port); ++ ++ if (mos7720_port == NULL) ++ return; ++ ++ if (!mos7720_port->open) { ++ dbg("%s - port not opened", __FUNCTION__); ++ return; ++ } ++ ++ DPRINTK("%s","Entering .......... \n"); ++ ++ tty = port->tty; ++ 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); ++ status = mos7720_write(port, &start_char, 1); ++ if (status <= 0) ++ { ++ return; ++ } ++ } ++ ++ /* if we are implementing RTS/CTS, toggle that line */ ++ if (tty->termios->c_cflag & CRTSCTS) ++ { ++ mos7720_port->shadowMCR |= UART_MCR_RTS; ++ status = SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor, UART_MCR, &mos7720_port->shadowMCR); ++ if (status != 0) ++ { ++ return; ++ } ++ } ++ ++ return; ++} ++ ++ ++/***************************************************************************** ++ * SerialSetTermios ++ * this function is called by the tty driver when it wants to change the termios structure ++ *****************************************************************************/ ++ ++static void mos7720_set_termios (struct usb_serial_port *port, struct termios *old_termios) ++{ ++ int status; ++ unsigned int cflag; ++ struct usb_serial *serial; ++ struct moschip_port *mos7720_port; ++ struct tty_struct *tty; ++ ++ serial = port->serial; ++ ++ mos7720_port = get_port_private(port); ++ ++ if (mos7720_port == NULL) ++ return; ++ ++ tty = port->tty; ++ ++ if (!port->tty || !port->tty->termios) ++ { ++ dbg ("%s - no tty or termios", __FUNCTION__); ++ return; ++ } ++ ++ if (!mos7720_port->open) ++ { ++ dbg("%s - port not opened", __FUNCTION__); ++ return; ++ } ++ ++ DPRINTK("%s\n","setting termios - ASPIRE"); ++ ++ cflag = tty->termios->c_cflag; ++ ++ if (!cflag) ++ { ++ printk("%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 */ ++ ++ change_port_settings (mos7720_port, old_termios); ++ ++ if(!port->read_urb) ++ { ++ DPRINTK("%s","URB KILLED !!!!!\n"); ++ return; ++ } ++ ++ if(port->read_urb->status!=-EINPROGRESS) ++ { ++ port->read_urb->dev = serial->dev; ++ status = usb_submit_urb(port->read_urb, GFP_ATOMIC); ++ if (status) ++ { ++ DPRINTK(" usb_submit_urb(read bulk) failed, status = %d", status); ++ } ++ } ++ return; ++} ++ ++ ++/***************************************************************************** ++ * 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. ++ *****************************************************************************/ ++ ++static int get_lsr_info(struct moschip_port *mos7720_port, unsigned int __user *value) ++{ ++ int count; ++ unsigned int result = 0; ++ ++ count = mos7720_chars_in_buffer(mos7720_port->port); ++ 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. ++ *****************************************************************************/ ++ ++static int get_number_bytes_avail(struct moschip_port *mos7720_port, unsigned int __user *value) ++{ ++ unsigned int result = 0; ++ struct tty_struct *tty = mos7720_port->port->tty; ++ ++ if (!tty) ++ return -ENOIOCTLCMD; ++ ++ result = tty->read_cnt; ++ ++ dbg("%s(%d) = %d", __FUNCTION__, mos7720_port->port->number, result); ++ if (copy_to_user(value, &result, sizeof(int))) ++ return -EFAULT; ++ ++ return -ENOIOCTLCMD; ++} ++/***************************************************************************** ++ * set_higher_rates ++ * function to set for Higher rates ++ *****************************************************************************/ ++ ++static int set_higher_rates(struct moschip_port *mos7720_port, unsigned int baud) ++{ ++ unsigned char data; ++ ++ struct usb_serial_port *port; ++ struct usb_serial *serial; ++ ++ ++ if (mos7720_port == NULL) ++ return -1; ++ ++ port = (struct usb_serial_port*)mos7720_port->port; ++ ++ serial = (struct usb_serial*)port->serial; ++ ++ /*********************************************** ++ * Init Sequence for higher rates ++ ***********************************************/ ++ ++ DPRINTK("%s", "Sending Setting Commands .......... \n"); ++ ++ data = 0x000; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x01, &data); ++ data = 0x000; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x02, &data); ++ data = 0x0CF; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x02, &data); ++ data = 0x00b; ++ mos7720_port->shadowMCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x04, &data); ++ data = 0x00b; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x04, &data); ++ ++ data = 0x000; ++ SendMosCmd(port->serial,MOS_READ,MOS_MAX_PORT,0x08, &data); ++ data = 0x000; ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,0x08, &data); ++ ++ ++ /*********************************************** ++ * Set for higher rates * ++ ***********************************************/ ++ ++ data = baud * 0x10; ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,port->number - port->serial->minor + 1,&data); ++ ++ data = 0x003; ++ SendMosCmd(port->serial,MOS_READ,MOS_MAX_PORT,0x08, &data); ++ data = 0x003; ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,0x08, &data); ++ ++ data = 0x02b; ++ mos7720_port->shadowMCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x04, &data); ++ data = 0x02b; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x04, &data); ++ ++ /*********************************************** ++ * Set DLL/DLM ++ ***********************************************/ ++ ++ data = mos7720_port->shadowLCR | UART_LCR_DLAB; ++ mos7720_port->shadowLCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x03, &data); ++ ++ data = 0x001; /* DLL */ ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x00, &data); ++ data = 0x000; /* DLM */ ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x01, &data); ++ ++ data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; ++ mos7720_port->shadowLCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x03, &data); ++ ++ ++ return 0; ++} ++ ++/***************************************************************************** ++ * set_modem_info ++ * function to set modem info ++ *****************************************************************************/ ++ ++static int set_modem_info(struct moschip_port *mos7720_port, unsigned int cmd, unsigned int __user *value) ++{ ++ unsigned int mcr ; ++ unsigned int arg; ++ unsigned char data; ++ ++ struct usb_serial_port *port; ++ ++ if (mos7720_port == NULL) ++ return -1; ++ ++ ++ port = (struct usb_serial_port*)mos7720_port->port; ++ ++ mcr = mos7720_port->shadowMCR; ++ ++ if (copy_from_user(&arg, value, sizeof(int))) ++ return -EFAULT; ++ ++ switch (cmd) { ++ case TIOCMBIS: ++ if (arg & TIOCM_RTS) ++ mcr |= UART_MCR_RTS; ++ if (arg & TIOCM_DTR) ++ mcr |= UART_MCR_RTS; ++ if (arg & TIOCM_LOOP) ++ mcr |= UART_MCR_LOOP; ++ break; ++ ++ case TIOCMBIC: ++ if (arg & TIOCM_RTS) ++ mcr &= ~UART_MCR_RTS; ++ if (arg & TIOCM_DTR) ++ mcr &= ~UART_MCR_RTS; ++ if (arg & TIOCM_LOOP) ++ mcr &= ~UART_MCR_LOOP; ++ break; ++ ++ case TIOCMSET: ++ /* turn off the RTS and DTR and LOOPBACK ++ * and then only turn on what was asked to */ ++ mcr &= ~(UART_MCR_RTS | UART_MCR_DTR | UART_MCR_LOOP); ++ mcr |= ((arg & TIOCM_RTS) ? UART_MCR_RTS : 0); ++ mcr |= ((arg & TIOCM_DTR) ? UART_MCR_DTR : 0); ++ mcr |= ((arg & TIOCM_LOOP) ? UART_MCR_LOOP : 0); ++ break; ++ } ++ ++ mos7720_port->shadowMCR = mcr; ++ ++ data = mos7720_port->shadowMCR; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor, UART_MCR, &data); ++ ++ return 0; ++} ++ ++/***************************************************************************** ++ * get_modem_info ++ * function to get modem info ++ *****************************************************************************/ ++ ++static int get_modem_info(struct moschip_port *mos7720_port, unsigned int __user *value) ++{ ++ unsigned int result = 0; ++ unsigned int msr = mos7720_port->shadowMSR; ++ unsigned int mcr = mos7720_port->shadowMCR; ++ ++ result = ((mcr & UART_MCR_DTR) ? TIOCM_DTR: 0) /* 0x002 */ ++ | ((mcr & UART_MCR_RTS) ? TIOCM_RTS: 0) /* 0x004 */ ++ | ((msr & UART_MSR_CTS) ? TIOCM_CTS: 0) /* 0x020 */ ++ | ((msr & UART_MSR_DCD) ? TIOCM_CAR: 0) /* 0x040 */ ++ | ((msr & UART_MSR_RI) ? TIOCM_RI: 0) /* 0x080 */ ++ | ((msr & UART_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 moschip_port *mos7720_port, struct serial_struct __user *retinfo) ++{ ++ struct serial_struct tmp; ++ ++ if (mos7720_port == NULL) ++ return -1; ++ ++ ++ if (!retinfo) ++ return -EFAULT; ++ ++ memset(&tmp, 0, sizeof(tmp)); ++ ++ tmp.type = PORT_16550A; ++ tmp.line = mos7720_port->port->serial->minor; ++ tmp.port = mos7720_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 ++ *****************************************************************************/ ++ ++static int mos7720_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg) ++{ ++ struct moschip_port *mos7720_port; ++ ++ struct async_icount cnow; ++ struct async_icount cprev; ++ struct serial_icounter_struct icount; ++ ++ mos7720_port = get_port_private(port); ++ if (mos7720_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); ++ return get_number_bytes_avail(mos7720_port, (unsigned int __user *)arg); ++ break; ++ ++ case TIOCSERGETLSR: ++ dbg("%s (%d) TIOCSERGETLSR", __FUNCTION__, port->number); ++ return get_lsr_info(mos7720_port, (unsigned int __user *)arg); ++ return 0; ++ ++ case TIOCMBIS: ++ case TIOCMBIC: ++ case TIOCMSET: ++ dbg("%s (%d) TIOCMSET/TIOCMBIC/TIOCMSET", __FUNCTION__, port->number); ++ return set_modem_info(mos7720_port, cmd, (unsigned int __user *)arg); ++ ++ case TIOCMGET: ++ dbg("%s (%d) TIOCMGET", __FUNCTION__, port->number); ++ return get_modem_info(mos7720_port, (unsigned int __user *) arg); ++ ++ case TIOCGSERIAL: ++ dbg("%s (%d) TIOCGSERIAL", __FUNCTION__, port->number); ++ return get_serial_info(mos7720_port, (struct serial_struct __user *) arg); ++ ++ case TIOCSSERIAL: ++ dbg("%s (%d) TIOCSSERIAL", __FUNCTION__, port->number); ++ break; ++ ++ case TIOCMIWAIT: ++ dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); ++ cprev = mos7720_port->icount; ++ while (1) { ++ interruptible_sleep_on(&mos7720_port->delta_msr_wait); ++ /* see if a signal did it */ ++ if (signal_pending(current)) ++ return -ERESTARTSYS; ++ cnow = mos7720_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 = mos7720_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 __user *)arg, &icount, sizeof(icount))) ++ return -EFAULT; ++ return 0; ++ } ++ ++ return -ENOIOCTLCMD; ++} ++ ++ ++/***************************************************************************** ++ * send_cmd_write_baud_rate ++ * this function sends the proper command to change the baud rate of the ++ * specified port. ++ *****************************************************************************/ ++ ++static int send_cmd_write_baud_rate (struct moschip_port *mos7720_port, int baudrate) ++{ ++ int divisor; ++ int status; ++ unsigned char data; ++ unsigned char number ; ++ ++ struct usb_serial_port *port; ++ ++ if (mos7720_port == NULL) ++ return -1; ++ ++ port = mos7720_port->port; ++ ++ DPRINTK("%s","Entering .......... \n"); ++ ++ number = mos7720_port->port->number - mos7720_port->port->serial->minor; ++ dbg("%s - port = %d, baud = %d", __FUNCTION__, mos7720_port->port->number, baudrate); ++ ++ /* Calculate the Divisor */ ++ status = calc_baud_rate_divisor (baudrate, &divisor); ++ if (status) ++ { ++ err("%s - bad baud rate", __FUNCTION__); ++ DPRINTK("%s\n","bad baud rate"); ++ return status; ++ } ++ ++ /* Enable access to divisor latch */ ++ data = mos7720_port->shadowLCR | UART_LCR_DLAB; ++ mos7720_port->shadowLCR = data; ++ SendMosCmd(mos7720_port->port->serial,MOS_WRITE,port->number - port->serial->minor, UART_LCR, &data); ++ ++ /* Write the divisor */ ++ data = ((unsigned char)(divisor & 0xff)); ++ SendMosCmd(mos7720_port->port->serial,MOS_WRITE,port->number - port->serial->minor,0x00, &data); ++ ++ data = ((unsigned char)((divisor & 0xff00) >> 8)); ++ SendMosCmd(mos7720_port->port->serial,MOS_WRITE,port->number - port->serial->minor,0x01, &data); ++ ++ /* Disable access to divisor latch */ ++ data = mos7720_port->shadowLCR & ~UART_LCR_DLAB; ++ mos7720_port->shadowLCR = data; ++ SendMosCmd(mos7720_port->port->serial,MOS_WRITE,port->number - port->serial->minor,0x03, &data); ++ ++ return status; ++} ++ ++/* baud rate information */ ++struct divisor_table_entry ++{ ++ __u32 baudrate; ++ __u16 divisor; ++}; ++ ++/* Define table of divisors for moschip 7720 hardware * ++ * These assume a 3.6864MHz crystal, the standard /16, and * ++ * MCR.7 = 0. */ ++static struct divisor_table_entry divisor_table[] = { ++ { 50, 2304}, ++ { 110, 1047}, /* 2094.545455 => 230450 => .0217 % over */ ++ { 134, 857}, /* 1713.011152 => 230398.5 => .00065% under */ ++ { 150, 768}, ++ { 300, 384}, ++ { 600, 192}, ++ { 1200, 96}, ++ { 1800, 64}, ++ { 2400, 48}, ++ { 4800, 24}, ++ { 7200, 16}, ++ { 9600, 12}, ++ { 19200, 6}, ++ { 38400, 3}, ++ { 57600, 2}, ++ { 115200, 1}, ++}; ++ ++/***************************************************************************** ++ * calc_baud_rate_divisor ++ * this function calculates the proper baud rate divisor for the specified ++ * baud rate. ++ *****************************************************************************/ ++static int calc_baud_rate_divisor(int baudrate, int *divisor) ++{ ++ int i; ++ __u16 custom; ++ __u16 round1; ++ __u16 round; ++ ++ ++ dbg("%s - %d", __FUNCTION__, baudrate); ++ ++ for (i = 0; i < ARRAY_SIZE(divisor_table); i++) { ++ if (divisor_table[i].baudrate == baudrate) { ++ *divisor = 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 -EINVAL; ++} ++ ++ ++ ++/***************************************************************************** ++ * change_port_settings ++ * This routine is called to set the UART on the device to match ++ * the specified new settings. ++ *****************************************************************************/ ++ ++static void change_port_settings (struct moschip_port *mos7720_port, struct termios *old_termios) ++{ ++ struct tty_struct *tty; ++ int baud; ++ unsigned cflag; ++ unsigned iflag; ++ __u8 mask = 0xff; ++ __u8 lData; ++ __u8 lParity; ++ __u8 lStop; ++ int status; ++ char data; ++ ++ struct usb_serial_port *port; ++ struct usb_serial *serial; ++ ++ if (mos7720_port == NULL) ++ return ; ++ ++ port = (struct usb_serial_port *)mos7720_port->port; ++ ++ serial = port->serial; ++ ++ dbg("%s - port %d", __FUNCTION__, mos7720_port->port->number); ++ ++ if (!mos7720_port->open) { ++ dbg("%s - port not opened", __FUNCTION__); ++ return; ++ } ++ ++ tty = mos7720_port->port->tty; ++ ++ if ((!tty) || (!tty->termios)) ++ { ++ dbg("%s - no tty structures", __FUNCTION__); ++ return; ++ } ++ ++ DPRINTK("%s","Entering .......... \n"); ++ ++ lData = UART_LCR_WLEN8; ++ lStop = 0x00; /* 1 stop bit */ ++ lParity = 0x00; /* No parity */ ++ ++ cflag = tty->termios->c_cflag; ++ iflag = tty->termios->c_iflag; ++ ++ /* Change the number of bits */ ++ switch (cflag & CSIZE) ++ { ++ case CS5: lData = UART_LCR_WLEN5; ++ mask = 0x1f; ++ break; ++ ++ case CS6: lData = UART_LCR_WLEN6; ++ mask = 0x3f; ++ break; ++ ++ case CS7: lData = UART_LCR_WLEN7; ++ mask = 0x7f; ++ break; ++ default: ++ case CS8: lData = UART_LCR_WLEN8; ++ break; ++ } ++ ++ /* Change the Parity bit */ ++ if (cflag & PARENB) { ++ if (cflag & PARODD) { ++ lParity = UART_LCR_PARITY; ++ dbg("%s - parity = odd", __FUNCTION__); ++ } else { ++ lParity = (UART_LCR_EPAR | UART_LCR_PARITY); ++ 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 = UART_LCR_STOP; ++ dbg("%s - stop bits = 2", __FUNCTION__); ++ } else { ++ lStop = 0x00; ++ dbg("%s - stop bits = 1", __FUNCTION__); ++ } ++ ++#define LCR_BITS_MASK 0x03 /* Mask for bits/char field */ ++#define LCR_STOP_MASK 0x04 /* Mask for stop bits field */ ++#define LCR_PAR_MASK 0x38 /* Mask for parity field */ ++ ++ /* Update the LCR with the correct value */ ++ mos7720_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK); ++ mos7720_port->shadowLCR |= (lData | lParity | lStop); ++ ++ mos7720_port->validDataMask = mask; ++ ++ /* Disable Interrupts */ ++ data = 0x00; ++ SendMosCmd(mos7720_port->port->serial,MOS_WRITE,port->number - port->serial->minor, UART_IER, &data); ++ ++ data = 0x00; ++ SendMosCmd(mos7720_port->port->serial,MOS_WRITE,port->number - port->serial->minor, UART_FCR, &data); ++ ++ data = 0xcf; ++ SendMosCmd(mos7720_port->port->serial,MOS_WRITE,port->number - port->serial->minor, UART_FCR, &data); ++ ++ /* Send the updated LCR value to the mos7720 */ ++ data = mos7720_port->shadowLCR; ++ SendMosCmd(mos7720_port->port->serial,MOS_WRITE,port->number - port->serial->minor, UART_LCR, &data); ++ ++ data = 0x00b; ++ mos7720_port->shadowMCR = data; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x04, &data); ++ data = 0x00b; ++ SendMosCmd(port->serial,MOS_WRITE,port->number - port->serial->minor,0x04, &data); ++ ++ /* set up the MCR register and send it to the mos7720 */ ++ ++ mos7720_port->shadowMCR = UART_MCR_OUT2; ++ if (cflag & CBAUD) ++ mos7720_port->shadowMCR |= (UART_MCR_DTR | UART_MCR_RTS); ++ ++ ++ if (cflag & CRTSCTS) { ++ mos7720_port->shadowMCR |= (UART_MCR_XONANY); ++ ++ /* To set hardware flow control to the specified * ++ * serial port, in SP1/2_CONTROL_REG */ ++ ++ if (port->number) { ++ data = 0x001; ++ SendMosCmd(port->serial, MOS_WRITE, MOS_MAX_PORT, 0x08, &data); ++ } else { ++ data = 0x002; ++ SendMosCmd(port->serial,MOS_WRITE,MOS_MAX_PORT,0x08, &data); ++ } ++ } else { ++ mos7720_port->shadowMCR &= ~(UART_MCR_XONANY); ++ } ++ ++ data = mos7720_port->shadowMCR; ++ SendMosCmd(mos7720_port->port->serial,MOS_WRITE,port->number - port->serial->minor, UART_MCR, &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; ++ } ++ ++ if (baud >= 230400) { ++ set_higher_rates(mos7720_port, baud); ++ /* Enable Interrupts */ ++ data = 0x0c; ++ SendMosCmd(mos7720_port->port->serial, MOS_WRITE,port->number - port->serial->minor, UART_IER, &data); ++ return; ++ } ++ ++ dbg("%s - baud rate = %d", __FUNCTION__, baud); ++ status = send_cmd_write_baud_rate (mos7720_port, baud); ++ ++ /* Enable Interrupts */ ++ data = 0x0c; ++ SendMosCmd(mos7720_port->port->serial, MOS_WRITE,port->number - port->serial->minor, UART_IER, &data); ++ ++ if (port->read_urb->status != -EINPROGRESS) { ++ port->read_urb->dev = serial->dev; ++ ++ status = usb_submit_urb(port->read_urb, GFP_ATOMIC); ++ ++ if (status) ++ { ++ DPRINTK(" usb_submit_urb(read bulk) failed, status = %d", status); ++ } ++ } ++ return; ++} ++ ++/**************************************************************************** ++ * mos7720_startup ++ ****************************************************************************/ ++ ++static int mos7720_startup (struct usb_serial *serial) ++{ ++ struct moschip_serial *mos7720_serial; ++ struct moschip_port *mos7720_port; ++ struct usb_device *dev; ++ int i; ++ char data; ++ ++// DPRINTK("%s \n"," mos7720_startup :entering.........."); ++ ++ if(!serial) ++ { ++ DPRINTK("%s\n","Invalid Handler"); ++ return -1; ++ } ++ ++ dev = serial->dev; ++ ++ DPRINTK("%s\n","Entering..."); ++ ++ /* create our private serial structure */ ++ mos7720_serial = kzalloc(sizeof(struct moschip_serial), GFP_KERNEL); ++ if (mos7720_serial == NULL) { ++ err("%s - Out of memory", __FUNCTION__); ++ return -ENOMEM; ++ } ++ ++ set_serial_private(serial,mos7720_serial); ++ ++ /* we set up the pointers to the endpoints in the mos7720_open * ++ * function, as the structures aren't created yet. */ ++ ++ /* set up port private structures */ ++ for (i = 0; i < serial->num_ports; ++i) { ++ mos7720_port = kzalloc(sizeof(struct moschip_port), GFP_KERNEL); ++ if (mos7720_port == NULL) { ++ err("%s - Out of memory", __FUNCTION__); ++ set_serial_private(serial,NULL); ++ kfree(mos7720_serial); ++ return -ENOMEM; ++ } ++ ++ /* 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; ++ ++ mos7720_port->port = serial->port[i]; ++ set_port_private(serial->port[i],mos7720_port); ++ ++ dbg("port number is %d", serial->port[i]->number); ++ dbg("serial number is %d", serial->minor); ++ } ++ ++ ++ /* setting configuration feature to one */ ++ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), (__u8)0x03, 0x00,0x01,0x00, NULL, 0x00, 5*HZ); ++ ++ SendMosCmd(serial,MOS_READ,0x00, UART_LSR, &data); // LSR For Port 1 ++ DPRINTK("LSR:%x\n",data); ++ ++ SendMosCmd(serial,MOS_READ,0x01, UART_LSR, &data); // LSR For Port 2 ++ DPRINTK("LSR:%x\n",data); ++ ++ return 0; ++} ++ ++ ++ ++/**************************************************************************** ++ * mos7720_shutdown ++ * This function is called whenever the device is removed from the usb bus. ++ ****************************************************************************/ ++ ++static void mos7720_shutdown (struct usb_serial *serial) ++{ ++ int i; ++ ++ dbg("%s \n"," shutdown :entering.........."); ++ ++ /* 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) { ++ kfree(get_port_private(serial->port[i])); ++ set_port_private(serial->port[i],NULL); ++ } ++ ++ /* free private structure allocated for serial device */ ++ kfree(get_serial_private(serial)); ++ set_serial_private(serial,NULL); ++ ++ dbg("%s\n","Thank u :: ASPIRE COMMUNICATIONS"); ++} ++ ++ ++/**************************************************************************** ++ * moschip7720_2port_driver ++ * Structure defining MCS7720, usb serail device ++ ****************************************************************************/ ++ ++static struct usb_serial_driver moschip7720_2port_driver = { ++ .driver = { ++ .owner = THIS_MODULE, ++ .name = "moschip7720", ++ }, ++ .description = "Moschip 2 port adapter", ++ .id_table = moschip_port_id_table, ++ .num_interrupt_in = 1, ++ .num_bulk_in = 2, ++ .num_bulk_out = 2, ++ .num_ports = 2, ++ .open = mos7720_open, ++ .close = mos7720_close, ++ .throttle = mos7720_throttle, ++ .unthrottle = mos7720_unthrottle, ++ .attach = mos7720_startup, ++ .shutdown = mos7720_shutdown, ++ .ioctl = mos7720_ioctl, ++ .set_termios = mos7720_set_termios, ++ .write = mos7720_write, ++ .write_room = mos7720_write_room, ++ .chars_in_buffer = mos7720_chars_in_buffer, ++ .break_ctl = mos7720_break, ++ .read_bulk_callback = mos7720_bulk_in_callback, ++}; ++ ++static struct usb_driver usb_driver = { ++ .name = "moschip7720", ++ .probe = usb_serial_probe, ++ .disconnect = usb_serial_disconnect, ++ .id_table = moschip_port_id_table, ++}; ++ ++ int __init moschip7720_init(void) ++{ ++ int retval; ++ ++ DPRINTK("%s \n"," mos7720_init :entering.........."); ++ ++ /* Register with the usb serial */ ++ retval = usb_serial_register (&moschip7720_2port_driver); ++ ++ if(retval) ++ goto failed_port_device_register; ++ ++ DPRINTK("%s\n","Entring..."); ++ info(DRIVER_DESC " " DRIVER_VERSION); ++ ++ /* Register with the usb */ ++ retval = usb_register(&usb_driver); ++ if (retval) ++ goto failed_usb_register; ++ ++ return 0; ++ ++failed_usb_register: ++ usb_serial_deregister(&moschip7720_2port_driver); ++ ++failed_port_device_register: ++ return retval; ++} ++ ++/**************************************************************************** ++ * moschip7720_exit ++ * Called when the driver is about to be unloaded. ++ ****************************************************************************/ ++void __exit moschip7720_exit (void) ++{ ++ usb_deregister(&usb_driver); ++ usb_serial_deregister(&moschip7720_2port_driver); ++} ++ ++module_init(moschip7720_init); ++module_exit(moschip7720_exit); ++ ++/* Module information */ ++MODULE_AUTHOR( DRIVER_AUTHOR ); ++MODULE_DESCRIPTION( DRIVER_DESC ); ++MODULE_LICENSE("GPL"); ++ ++MODULE_PARM_DESC(debug, "Debug enabled or not"); |