pl2303-linux.zip

/* * Prolific PL2303 USB to serial adaptor driver * * Copyright (C) 2001-2004 Greg Kroah-Hartman ([email protected]) * Copyright (C) 2003 IBM Corp. * * Original driver for 2.2.x by anonymous * * 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. * * See Documentation/usb/usb-serial.txt for more information on using this driver * */ #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/serial.h> #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/spinlock.h> #include <asm/uaccess.h> #include <linux/usb.h> #include "usb-serial.h" #include "pl2303.h" /* * Version Information */ #define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver" static int debug; #define PL2303_CLOSING_WAIT (30*HZ) #define PL2303_BUF_SIZE 1024 #define PL2303_TMP_BUF_SIZE 1024 struct pl2303_buf { unsigned int buf_size; char *buf_buf; char *buf_get; char *buf_put; }; static struct usb_device_id id_table [] = { { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, { USB_DEVICE(OTI_VENDOR_ID, OTI_PRODUCT_ID) }, { } /* Terminating entry */ }; MODULE_DEVICE_TABLE (usb, id_table); static struct usb_driver pl2303_driver = { .name = "pl2303", .probe = usb_serial_probe, .disconnect = usb_serial_disconnect, .id_table = id_table, .no_dynamic_id = 1, }; #define SET_LINE_REQUEST_TYPE 0x21 #define SET_LINE_REQUEST 0x20 #define SET_CONTROL_REQUEST_TYPE 0x21 #define SET_CONTROL_REQUEST 0x22 #define CONTROL_DTR 0x01 #define CONTROL_RTS 0x02 #define BREAK_REQUEST_TYPE 0x21 #define BREAK_REQUEST 0x23 #define BREAK_ON 0xffff #define BREAK_OFF 0x0000 #define GET_LINE_REQUEST_TYPE 0xa1 #define GET_LINE_REQUEST 0x21 #define VENDOR_WRITE_REQUEST_TYPE 0x40 #define VENDOR_WRITE_REQUEST 0x01 #define VENDOR_READ_REQUEST_TYPE 0xc0 #define VENDOR_READ_REQUEST 0x01 #define UART_STATE 0x08 #define UART_STATE_TRANSIENT_MASK 0x74 #define UART_DCD 0x01 #define UART_DSR 0x02 #define UART_BREAK_ERROR 0x04 #define UART_RING 0x08 #define UART_FRAME_ERROR 0x10 #define UART_PARITY_ERROR 0x20 #define UART_OVERRUN_ERROR 0x40 #define UART_CTS 0x80 /* function prototypes for a PL2303 serial converter */ static int pl2303_open (struct usb_serial_port *port, struct file *filp); static void pl2303_close (struct usb_serial_port *port, struct file *filp); static void pl2303_set_termios (struct usb_serial_port *port, struct termios *old); static int pl2303_ioctl (struct usb_serial_port *port, struct file *file, unsigned int cmd, unsigned long arg); static void pl2303_read_int_callback (struct urb *urb, struct pt_regs *regs); static void pl2303_read_bulk_callback (struct urb *urb, struct pt_regs *regs); static void pl2303_write_bulk_callback (struct urb *urb, struct pt_regs *regs); static int pl2303_write (struct usb_serial_port *port, const unsigned char *buf, int count); static void pl2303_send (struct usb_serial_port *port); static int pl2303_write_room(struct usb_serial_port *port); static int pl2303_chars_in_buffer(struct usb_serial_port *port); static void pl2303_break_ctl(struct usb_serial_port *port,int break_state); static int pl2303_tiocmget (struct usb_serial_port *port, struct file *file); static int pl2303_tiocmset (struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear); static int pl2303_startup (struct usb_serial *serial); static void pl2303_shutdown (struct usb_serial *serial); static struct pl2303_buf *pl2303_buf_alloc(unsigned int size); static void pl2303_buf_free(struct pl2303_buf *pb); static void pl2303_buf_clear(struct pl2303_buf *pb); static unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb); static unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb); static unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, unsigned int count); static unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, unsigned int count); /* All of the device info needed for the PL2303 SIO serial converter */ static struct usb_serial_driver pl2303_device = { .driver = { .owner = THIS_MODULE, .name = "pl2303", }, .id_table = id_table, .num_interrupt_in = NUM_DONT_CARE, .num_bulk_in = 1, .num_bulk_out = 1, .num_ports = 1, .open = pl2303_open, .close = pl2303_close, .write = pl2303_write, .ioctl = pl2303_ioctl, .break_ctl = pl2303_break_ctl, .set_termios = pl2303_set_termios, .tiocmget = pl2303_tiocmget, .tiocmset = pl2303_tiocmset, .read_bulk_callback = pl2303_read_bulk_callback, .read_int_callback = pl2303_read_int_callback, .write_bulk_callback = pl2303_write_bulk_callback, .write_room = pl2303_write_room, .chars_in_buffer = pl2303_chars_in_buffer, .attach = pl2303_startup, .shutdown = pl2303_shutdown, }; enum pl2303_type { type_0, /* don't know the difference between type 0 and */ type_1, /* type 1, until someone from prolific tells us... */ HX, /* HX version of the pl2303 chip */ }; struct pl2303_private { spinlock_t lock; struct pl2303_buf *buf; int write_urb_in_use; wait_queue_head_t delta_msr_wait; u8 line_control; u8 line_status; u8 termios_initialized; enum pl2303_type type; }; static int pl2303_startup (struct usb_serial *serial) { struct pl2303_private *priv; enum pl2303_type type = type_0; int i; if (serial->dev->descriptor.bDeviceClass == 0x02) type = type_0; else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) type = HX; else if (serial->dev->descriptor.bDeviceClass == 0x00) type = type_1; else if (serial->dev->descriptor.bDeviceClass == 0xFF) type = type_1; dbg("device type: %d", type); for (i = 0; i < serial->num_ports; ++i) { priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); if (!priv) goto cleanup; spin_lock_init(&priv->lock); priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); if (priv->buf == NULL) { kfree(priv); goto cleanup; } init_waitqueue_head(&priv->delta_msr_wait); priv->type = type; usb_set_ser