主机:Gentoo Linux 11.2
内核版本:Linux 3.0.6
以前在Ubuntu下USB转串口驱动已经编译进内核,而编译的Gentoo内核没有编译进去,这里将内核中PL2303驱动 copy出来单独编译出pl2303.ko然后将其复制进/usr/src/linux/drivers/usb/serial/目录下
然后使用命令
modprobe usbserial
modprobe pl2303
然后将usb转串口接口插入usb,使用命令查看dmesg | tail查看如下
查看内核中驱动,看到usbserial.ko驱动,下面单独编译pl2303.ko
从内核中拷贝的pl2303.h
[cpp]
- /*
- * Prolific PL2303 USB to serial adaptor driver header file
- *
- * 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.
- *
- */
- #define BENQ_VENDOR_ID 0x04a5
- #define BENQ_PRODUCT_ID_S81 0x4027
- #define PL2303_VENDOR_ID 0x067b
- #define PL2303_PRODUCT_ID 0x2303
- #define PL2303_PRODUCT_ID_RSAQ2 0x04bb
- #define PL2303_PRODUCT_ID_DCU11 0x1234
- #define PL2303_PRODUCT_ID_PHAROS 0xaaa0
- #define PL2303_PRODUCT_ID_RSAQ3 0xaaa2
- #define PL2303_PRODUCT_ID_ALDIGA 0x0611
- #define PL2303_PRODUCT_ID_MMX 0x0612
- #define PL2303_PRODUCT_ID_GPRS 0x0609
- #define PL2303_PRODUCT_ID_HCR331 0x331a
- #define PL2303_PRODUCT_ID_MOTOROLA 0x0307
- #define ATEN_VENDOR_ID 0x0557
- #define ATEN_VENDOR_ID2 0x0547
- #define ATEN_PRODUCT_ID 0x2008
- #define IODATA_VENDOR_ID 0x04bb
- #define IODATA_PRODUCT_ID 0x0a03
- #define IODATA_PRODUCT_ID_RSAQ5 0x0a0e
- #define ELCOM_VENDOR_ID 0x056e
- #define ELCOM_PRODUCT_ID 0x5003
- #define ELCOM_PRODUCT_ID_UCSGT 0x5004
- #define ITEGNO_VENDOR_ID 0x0eba
- #define ITEGNO_PRODUCT_ID 0x1080
- #define ITEGNO_PRODUCT_ID_2080 0x2080
- #define MA620_VENDOR_ID 0x0df7
- #define MA620_PRODUCT_ID 0x0620
- #define RATOC_VENDOR_ID 0x0584
- #define RATOC_PRODUCT_ID 0xb000
- #define TRIPP_VENDOR_ID 0x2478
- #define TRIPP_PRODUCT_ID 0x2008
- #define RADIOSHACK_VENDOR_ID 0x1453
- #define RADIOSHACK_PRODUCT_ID 0x4026
- #define DCU10_VENDOR_ID 0x0731
- #define DCU10_PRODUCT_ID 0x0528
- #define SITECOM_VENDOR_ID 0x6189
- #define SITECOM_PRODUCT_ID 0x2068
- /* Alcatel OT535/735 USB cable */
- #define ALCATEL_VENDOR_ID 0x11f7
- #define ALCATEL_PRODUCT_ID 0x02df
- /* Samsung I330 phone cradle */
- #define SAMSUNG_VENDOR_ID 0x04e8
- #define SAMSUNG_PRODUCT_ID 0x8001
- #define SIEMENS_VENDOR_ID 0x11f5
- #define SIEMENS_PRODUCT_ID_SX1 0x0001
- #define SIEMENS_PRODUCT_ID_X65 0x0003
- #define SIEMENS_PRODUCT_ID_X75 0x0004
- #define SIEMENS_PRODUCT_ID_EF81 0x0005
- #define SYNTECH_VENDOR_ID 0x0745
- #define SYNTECH_PRODUCT_ID 0x0001
- /* Nokia CA-42 Cable */
- #define NOKIA_CA42_VENDOR_ID 0x078b
- #define NOKIA_CA42_PRODUCT_ID 0x1234
- /* CA-42 CLONE Cable www.ca-42.com chipset: Prolific Technology Inc */
- #define CA_42_CA42_VENDOR_ID 0x10b5
- #define CA_42_CA42_PRODUCT_ID 0xac70
- #define SAGEM_VENDOR_ID 0x079b
- #define SAGEM_PRODUCT_ID 0x0027
- /* Leadtek GPS 9531 (ID 0413:2101) */
- #define LEADTEK_VENDOR_ID 0x0413
- #define LEADTEK_9531_PRODUCT_ID 0x2101
- /* USB GSM cable from Speed Dragon Multimedia, Ltd */
- #define SPEEDDRAGON_VENDOR_ID 0x0e55
- #define SPEEDDRAGON_PRODUCT_ID 0x110b
- /* DATAPILOT Universal-2 Phone Cable */
- #define DATAPILOT_U2_VENDOR_ID 0x0731
- #define DATAPILOT_U2_PRODUCT_ID 0x2003
- /* Belkin “F5U257” Serial Adapter */
- #define BELKIN_VENDOR_ID 0x050d
- #define BELKIN_PRODUCT_ID 0x0257
- /* Alcor Micro Corp. USB 2.0 TO RS-232 */
- #define ALCOR_VENDOR_ID 0x058F
- #define ALCOR_PRODUCT_ID 0x9720
- /* Willcom WS002IN Data Driver (by NetIndex Inc.) */
- #define WS002IN_VENDOR_ID 0x11f6
- #define WS002IN_PRODUCT_ID 0x2001
- /* Corega CG-USBRS232R Serial Adapter */
- #define COREGA_VENDOR_ID 0x07aa
- #define COREGA_PRODUCT_ID 0x002a
- /* Y.C. Cable U.S.A., Inc – USB to RS-232 */
- #define YCCABLE_VENDOR_ID 0x05ad
- #define YCCABLE_PRODUCT_ID 0x0fba
- /* “Superial” USB – Serial */
- #define SUPERIAL_VENDOR_ID 0x5372
- #define SUPERIAL_PRODUCT_ID 0x2303
- /* Hewlett-Packard LD220-HP POS Pole Display */
- #define HP_VENDOR_ID 0x03f0
- #define HP_LD220_PRODUCT_ID 0x3524
- /* Cressi Edy (diving computer) PC interface */
- #define CRESSI_VENDOR_ID 0x04b8
- #define CRESSI_EDY_PRODUCT_ID 0x0521
- /* Zeagle dive computer interface */
- #define ZEAGLE_VENDOR_ID 0x04b8
- #define ZEAGLE_N2ITION3_PRODUCT_ID 0x0522
- /* Sony, USB data cable for CMD-Jxx mobile phones */
- #define SONY_VENDOR_ID 0x054c
- #define SONY_QN3USB_PRODUCT_ID 0x0437
- /* Sanwa KB-USB2 multimeter cable (ID: 11ad:0001) */
- #define SANWA_VENDOR_ID 0x11ad
- #define SANWA_PRODUCT_ID 0x0001
- /* ADLINK ND-6530 RS232,RS485 and RS422 adapter */
- #define ADLINK_VENDOR_ID 0x0b63
- #define ADLINK_ND6530_PRODUCT_ID 0x6530
- /* WinChipHead USB->RS 232 adapter */
- #define WINCHIPHEAD_VENDOR_ID 0x4348
- #define WINCHIPHEAD_USBSER_PRODUCT_ID 0x5523
[cpp]
- /*
- * Prolific PL2303 USB to serial adaptor driver
- *
- * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com)
- * 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 version
- * 2 as published by the Free Software Foundation.
- *
- * See Documentation/usb/usb-serial.txt for more information on using this
- * driver
- *
- */
- #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 <linux/uaccess.h>
- #include <linux/usb.h>
- #include <linux/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)
- static const 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_DCU11) },
- { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) },
- { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) },
- { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) },
- { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) },
- { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) },
- { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
- { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
- { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
- { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
- { 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(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) },
- { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */
- { 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(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) },
- { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) },
- { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) },
- { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) },
- { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) },
- { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) },
- { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) },
- { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) },
- { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) },
- { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) },
- { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) },
- { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) },
- { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) },
- { USB_DEVICE(WINCHIPHEAD_VENDOR_ID, WINCHIPHEAD_USBSER_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,
- .suspend = usb_serial_suspend,
- .resume = usb_serial_resume,
- .no_dynamic_id = 1,
- .supports_autosuspend = 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
- 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;
- wait_queue_head_t delta_msr_wait;
- u8 line_control;
- u8 line_status;
- enum pl2303_type type;
- };
- static int pl2303_vendor_read(__u16 value, __u16 index,
- struct usb_serial *serial, unsigned char *buf)
- {
- int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE,
- value, index, buf, 1, 100);
- dbg(“0x%x:0x%x:0x%x:0x%x %d – %x”, VENDOR_READ_REQUEST_TYPE,
- VENDOR_READ_REQUEST, value, index, res, buf[0]);
- return res;
- }
- static int pl2303_vendor_write(__u16 value, __u16 index,
- struct usb_serial *serial)
- {
- int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE,
- value, index, NULL, 0, 100);
- dbg(“0x%x:0x%x:0x%x:0x%x %d”, VENDOR_WRITE_REQUEST_TYPE,
- VENDOR_WRITE_REQUEST, value, index, res);
- return res;
- }
- static int pl2303_startup(struct usb_serial *serial)
- {
- struct pl2303_private *priv;
- enum pl2303_type type = type_0;
- unsigned char *buf;
- int i;
- buf = kmalloc(10, GFP_KERNEL);
- if (buf == NULL)
- return -ENOMEM;
- 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);
- init_waitqueue_head(&priv->delta_msr_wait);
- priv->type = type;
- usb_set_serial_port_data(serial->port[i], priv);
- }
- pl2303_vendor_read(0x8484, 0, serial, buf);
- pl2303_vendor_write(0x0404, 0, serial);
- pl2303_vendor_read(0x8484, 0, serial, buf);
- pl2303_vendor_read(0x8383, 0, serial, buf);
- pl2303_vendor_read(0x8484, 0, serial, buf);
- pl2303_vendor_write(0x0404, 1, serial);
- pl2303_vendor_read(0x8484, 0, serial, buf);
- pl2303_vendor_read(0x8383, 0, serial, buf);
- pl2303_vendor_write(0, 1, serial);
- pl2303_vendor_write(1, 0, serial);
- if (type == HX)
- pl2303_vendor_write(2, 0x44, serial);
- else
- pl2303_vendor_write(2, 0x24, serial);
- kfree(buf);
- return 0;
- cleanup:
- kfree(buf);
- for (–i; i >= 0; –i) {
- priv = usb_get_serial_port_data(serial->port[i]);
- kfree(priv);
- usb_set_serial_port_data(serial->port[i], NULL);
- }
- return -ENOMEM;
- }
- static int set_control_lines(struct usb_device *dev, u8 value)
- {
- int retval;
- retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
- SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE,
- value, 0, NULL, 0, 100);
- dbg(“%s – value = %d, retval = %d”, __func__, value, retval);
- return retval;
- }
- static void pl2303_set_termios(struct tty_struct *tty,
- struct usb_serial_port *port, struct ktermios *old_termios)
- {
- struct usb_serial *serial = port->serial;
- struct pl2303_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
- unsigned int cflag;
- unsigned char *buf;
- int baud;
- int i;
- u8 control;
- const int baud_sup[] = { 75, 150, 300, 600, 1200, 1800, 2400, 3600,
- 4800, 7200, 9600, 14400, 19200, 28800, 38400,
- 57600, 115200, 230400, 460800, 614400,
- 921600, 1228800, 2457600, 3000000, 6000000 };
- int baud_floor, baud_ceil;
- int k;
- dbg(“%s – port %d”, __func__, port->number);
- /* The PL2303 is reported to lose bytes if you change
- serial settings even to the same values as before. Thus
- we actually need to filter in this specific case */
- if (!tty_termios_hw_change(tty->termios, old_termios))
- return;
- cflag = tty->termios->c_cflag;
- buf = kzalloc(7, GFP_KERNEL);
- if (!buf) {
- dev_err(&port->dev, “%s – out of memory.\n”, __func__);
- /* Report back no change occurred */
- *tty->termios = *old_termios;
- return;
- }
- i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
- 0, 0, buf, 7, 100);
- dbg(“0xa1:0x21:0:0 %d – %x %x %x %x %x %x %x”, i,
- buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
- if (cflag & CSIZE) {
- switch (cflag & CSIZE) {
- case CS5:
- buf[6] = 5;
- break;
- case CS6:
- buf[6] = 6;
- break;
- case CS7:
- buf[6] = 7;
- break;
- default:
- case CS8:
- buf[6] = 8;
- break;
- }
- dbg(“%s – data bits = %d”, __func__, buf[6]);
- }
- /* For reference buf[0]:buf[3] baud rate value */
- /* NOTE: Only the values defined in baud_sup are supported !
- * => if unsupported values are set, the PL2303 seems to use
- * 9600 baud (at least my PL2303X always does)
- */
- baud = tty_get_baud_rate(tty);
- dbg(“%s – baud requested = %d”, __func__, baud);
- if (baud) {
- /* Set baudrate to nearest supported value */
- for (k=0; k<ARRAY_SIZE(baud_sup); k++) {
- if (baud_sup[k] / baud) {
- baud_ceil = baud_sup[k];
- if (k==0) {
- baud = baud_ceil;
- } else {
- baud_floor = baud_sup[k-1];
- if ((baud_ceil % baud)
- > (baud % baud_floor))
- baud = baud_floor;
- else
- baud = baud_ceil;
- }
- break;
- }
- }
- if (baud > 1228800) {
- /* type_0, type_1 only support up to 1228800 baud */
- if (priv->type != HX)
- baud = 1228800;
- else if (baud > 6000000)
- baud = 6000000;
- }
- dbg(“%s – baud set = %d”, __func__, baud);
- if (baud <= 115200) {
- buf[0] = baud & 0xff;
- buf[1] = (baud >> 8) & 0xff;
- buf[2] = (baud >> 16) & 0xff;
- buf[3] = (baud >> 24) & 0xff;
- } else {
- /* apparently the formula for higher speeds is:
- * baudrate = 12M * 32 / (2^buf[1]) / buf[0]
- */
- unsigned tmp = 12*1000*1000*32 / baud;
- buf[3] = 0x80;
- buf[2] = 0;
- buf[1] = (tmp >= 256);
- while (tmp >= 256) {
- tmp >>= 2;
- buf[1] <<= 1;
- }
- if (tmp > 256) {
- tmp %= 256;
- }
- buf[0] = tmp;
- }
- }
- /* For reference buf[4]=0 is 1 stop bits */
- /* For reference buf[4]=1 is 1.5 stop bits */
- /* For reference buf[4]=2 is 2 stop bits */
- if (cflag & CSTOPB) {
- /* NOTE: Comply with “real” UARTs / RS232:
- * use 1.5 instead of 2 stop bits with 5 data bits
- */
- if ((cflag & CSIZE) == CS5) {
- buf[4] = 1;
- dbg(“%s – stop bits = 1.5”, __func__);
- } else {
- buf[4] = 2;
- dbg(“%s – stop bits = 2”, __func__);
- }
- } else {
- buf[4] = 0;
- dbg(“%s – stop bits = 1”, __func__);
- }
- if (cflag & PARENB) {
- /* For reference buf[5]=0 is none parity */
- /* For reference buf[5]=1 is odd parity */
- /* For reference buf[5]=2 is even parity */
- /* For reference buf[5]=3 is mark parity */
- /* For reference buf[5]=4 is space parity */
- if (cflag & PARODD) {
- if (cflag & CMSPAR) {
- buf[5] = 3;
- dbg(“%s – parity = mark”, __func__);
- } else {
- buf[5] = 1;
- dbg(“%s – parity = odd”, __func__);
- }
- } else {
- if (cflag & CMSPAR) {
- buf[5] = 4;
- dbg(“%s – parity = space”, __func__);
- } else {
- buf[5] = 2;
- dbg(“%s – parity = even”, __func__);
- }
- }
- } else {
- buf[5] = 0;
- dbg(“%s – parity = none”, __func__);
- }
- i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE,
- 0, 0, buf, 7, 100);
- dbg(“0x21:0x20:0:0 %d”, i);
- /* change control lines if we are switching to or from B0 */
- spin_lock_irqsave(&priv->lock, flags);
- control = priv->line_control;
- if ((cflag & CBAUD) == B0)
- priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
- else
- priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
- if (control != priv->line_control) {
- control = priv->line_control;
- spin_unlock_irqrestore(&priv->lock, flags);
- set_control_lines(serial->dev, control);
- } else {
- spin_unlock_irqrestore(&priv->lock, flags);
- }
- buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0;
- i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE,
- 0, 0, buf, 7, 100);
- dbg(“0xa1:0x21:0:0 %d – %x %x %x %x %x %x %x”, i,
- buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]);
- if (cflag & CRTSCTS) {
- if (priv->type == HX)
- pl2303_vendor_write(0x0, 0x61, serial);
- else
- pl2303_vendor_write(0x0, 0x41, serial);
- } else {
- pl2303_vendor_write(0x0, 0x0, serial);
- }
- /* Save resulting baud rate */
- if (baud)
- tty_encode_baud_rate(tty, baud, baud);
- kfree(buf);
- }
- static void pl2303_dtr_rts(struct usb_serial_port *port, int on)
- {
- struct pl2303_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
- u8 control;
- spin_lock_irqsave(&priv->lock, flags);
- /* Change DTR and RTS */
- if (on)
- priv->line_control |= (CONTROL_DTR | CONTROL_RTS);
- else
- priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS);
- control = priv->line_control;
- spin_unlock_irqrestore(&priv->lock, flags);
- set_control_lines(port->serial->dev, control);
- }
- static void pl2303_close(struct usb_serial_port *port)
- {
- dbg(“%s – port %d”, __func__, port->number);
- usb_serial_generic_close(port);
- usb_kill_urb(port->interrupt_in_urb);
- }
- static int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port)
- {
- struct ktermios tmp_termios;
- struct usb_serial *serial = port->serial;
- struct pl2303_private *priv = usb_get_serial_port_data(port);
- int result;
- dbg(“%s – port %d”, __func__, port->number);
- if (priv->type != HX) {
- usb_clear_halt(serial->dev, port->write_urb->pipe);
- usb_clear_halt(serial->dev, port->read_urb->pipe);
- } else {
- /* reset upstream data pipes */
- pl2303_vendor_write(8, 0, serial);
- pl2303_vendor_write(9, 0, serial);
- }
- /* Setup termios */
- if (tty)
- pl2303_set_termios(tty, port, &tmp_termios);
- dbg(“%s – submitting read urb”, __func__);
- result = usb_serial_generic_submit_read_urb(port, GFP_KERNEL);
- if (result) {
- pl2303_close(port);
- return -EPROTO;
- }
- dbg(“%s – submitting interrupt urb”, __func__);
- result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
- if (result) {
- dev_err(&port->dev, “%s – failed submitting interrupt urb,”
- ” error %d\n”, __func__, result);
- pl2303_close(port);
- return -EPROTO;
- }
- port->port.drain_delay = 256;
- return 0;
- }
- static int pl2303_tiocmset(struct tty_struct *tty,
- unsigned int set, unsigned int clear)
- {
- struct usb_serial_port *port = tty->driver_data;
- struct pl2303_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
- u8 control;
- if (!usb_get_intfdata(port->serial->interface))
- return -ENODEV;
- spin_lock_irqsave(&priv->lock, flags);
- if (set & TIOCM_RTS)
- priv->line_control |= CONTROL_RTS;
- if (set & TIOCM_DTR)
- priv->line_control |= CONTROL_DTR;
- if (clear & TIOCM_RTS)
- priv->line_control &= ~CONTROL_RTS;
- if (clear & TIOCM_DTR)
- priv->line_control &= ~CONTROL_DTR;
- control = priv->line_control;
- spin_unlock_irqrestore(&priv->lock, flags);
- return set_control_lines(port->serial->dev, control);
- }
- static int pl2303_tiocmget(struct tty_struct *tty)
- {
- struct usb_serial_port *port = tty->driver_data;
- struct pl2303_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
- unsigned int mcr;
- unsigned int status;
- unsigned int result;
- dbg(“%s (%d)”, __func__, port->number);
- if (!usb_get_intfdata(port->serial->interface))
- return -ENODEV;
- spin_lock_irqsave(&priv->lock, flags);
- mcr = priv->line_control;
- status = priv->line_status;
- spin_unlock_irqrestore(&priv->lock, flags);
- result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0)
- | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0)
- | ((status & UART_CTS) ? TIOCM_CTS : 0)
- | ((status & UART_DSR) ? TIOCM_DSR : 0)
- | ((status & UART_RING) ? TIOCM_RI : 0)
- | ((status & UART_DCD) ? TIOCM_CD : 0);
- dbg(“%s – result = %x”, __func__, result);
- return result;
- }
- static int pl2303_carrier_raised(struct usb_serial_port *port)
- {
- struct pl2303_private *priv = usb_get_serial_port_data(port);
- if (priv->line_status & UART_DCD)
- return 1;
- return 0;
- }
- static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
- {
- struct pl2303_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
- unsigned int prevstatus;
- unsigned int status;
- unsigned int changed;
- spin_lock_irqsave(&priv->lock, flags);
- prevstatus = priv->line_status;
- spin_unlock_irqrestore(&priv->lock, flags);
- while (1) {
- interruptible_sleep_on(&priv->delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
- spin_lock_irqsave(&priv->lock, flags);
- status = priv->line_status;
- spin_unlock_irqrestore(&priv->lock, flags);
- changed = prevstatus ^ status;
- if (((arg & TIOCM_RNG) && (changed & UART_RING)) ||
- ((arg & TIOCM_DSR) && (changed & UART_DSR)) ||
- ((arg & TIOCM_CD) && (changed & UART_DCD)) ||
- ((arg & TIOCM_CTS) && (changed & UART_CTS))) {
- return 0;
- }
- prevstatus = status;
- }
- /* NOTREACHED */
- return 0;
- }
- static int pl2303_ioctl(struct tty_struct *tty,
- unsigned int cmd, unsigned long arg)
- {
- struct serial_struct ser;
- struct usb_serial_port *port = tty->driver_data;
- dbg(“%s (%d) cmd = 0x%04x”, __func__, port->number, cmd);
- switch (cmd) {
- case TIOCGSERIAL:
- memset(&ser, 0, sizeof ser);
- ser.type = PORT_16654;
- ser.line = port->serial->minor;
- ser.port = port->number;
- ser.baud_base = 460800;
- if (copy_to_user((void __user *)arg, &ser, sizeof ser))
- return -EFAULT;
- return 0;
- case TIOCMIWAIT:
- dbg(“%s (%d) TIOCMIWAIT”, __func__, port->number);
- return wait_modem_info(port, arg);
- default:
- dbg(“%s not supported = 0x%04x”, __func__, cmd);
- break;
- }
- return -ENOIOCTLCMD;
- }
- static void pl2303_break_ctl(struct tty_struct *tty, int break_state)
- {
- struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial = port->serial;
- u16 state;
- int result;
- dbg(“%s – port %d”, __func__, port->number);
- if (break_state == 0)
- state = BREAK_OFF;
- else
- state = BREAK_ON;
- dbg(“%s – turning break %s”, __func__,
- state == BREAK_OFF ? “off” : “on”);
- result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- BREAK_REQUEST, BREAK_REQUEST_TYPE, state,
- 0, NULL, 0, 100);
- if (result)
- dbg(“%s – error sending break = %d”, __func__, result);
- }
- static void pl2303_release(struct usb_serial *serial)
- {
- int i;
- struct pl2303_private *priv;
- dbg(“%s”, __func__);
- for (i = 0; i < serial->num_ports; ++i) {
- priv = usb_get_serial_port_data(serial->port[i]);
- kfree(priv);
- }
- }
- static void pl2303_update_line_status(struct usb_serial_port *port,
- unsigned char *data,
- unsigned int actual_length)
- {
- struct pl2303_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
- unsigned long flags;
- u8 status_idx = UART_STATE;
- u8 length = UART_STATE + 1;
- u8 prev_line_status;
- u16 idv, idp;
- idv = le16_to_cpu(port->serial->dev->descriptor.idVendor);
- idp = le16_to_cpu(port->serial->dev->descriptor.idProduct);
- if (idv == SIEMENS_VENDOR_ID) {
- if (idp == SIEMENS_PRODUCT_ID_X65 ||
- idp == SIEMENS_PRODUCT_ID_SX1 ||
- idp == SIEMENS_PRODUCT_ID_X75) {
- length = 1;
- status_idx = 0;
- }
- }
- if (actual_length < length)
- return;
- /* Save off the uart status for others to look at */
- spin_lock_irqsave(&priv->lock, flags);
- prev_line_status = priv->line_status;
- priv->line_status = data[status_idx];
- spin_unlock_irqrestore(&priv->lock, flags);
- if (priv->line_status & UART_BREAK_ERROR)
- usb_serial_handle_break(port);
- wake_up_interruptible(&priv->delta_msr_wait);
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
- if ((priv->line_status ^ prev_line_status) & UART_DCD)
- usb_serial_handle_dcd_change(port, tty,
- priv->line_status & UART_DCD);
- tty_kref_put(tty);
- }
- static void pl2303_read_int_callback(struct urb *urb)
- {
- struct usb_serial_port *port = urb->context;
- unsigned char *data = urb->transfer_buffer;
- unsigned int actual_length = urb->actual_length;
- int status = urb->status;
- int retval;
- dbg(“%s (%d)”, __func__, port->number);
- switch (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__,
- status);
- return;
- default:
- dbg(“%s – nonzero urb status received: %d”, __func__,
- status);
- goto exit;
- }
- usb_serial_debug_data(debug, &port->dev, __func__,
- urb->actual_length, urb->transfer_buffer);
- pl2303_update_line_status(port, data, actual_length);
- exit:
- retval = usb_submit_urb(urb, GFP_ATOMIC);
- if (retval)
- dev_err(&urb->dev->dev,
- “%s – usb_submit_urb failed with result %d\n”,
- __func__, retval);
- }
- static void pl2303_process_read_urb(struct urb *urb)
- {
- struct usb_serial_port *port = urb->context;
- struct pl2303_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
- unsigned char *data = urb->transfer_buffer;
- char tty_flag = TTY_NORMAL;
- unsigned long flags;
- u8 line_status;
- int i;
- /* update line status */
- spin_lock_irqsave(&priv->lock, flags);
- line_status = priv->line_status;
- priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
- spin_unlock_irqrestore(&priv->lock, flags);
- wake_up_interruptible(&priv->delta_msr_wait);
- if (!urb->actual_length)
- return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
- /* break takes precedence over parity, */
- /* which takes precedence over framing errors */
- if (line_status & UART_BREAK_ERROR)
- tty_flag = TTY_BREAK;
- else if (line_status & UART_PARITY_ERROR)
- tty_flag = TTY_PARITY;
- else if (line_status & UART_FRAME_ERROR)
- tty_flag = TTY_FRAME;
- dbg(“%s – tty_flag = %d”, __func__, tty_flag);
- /* overrun is special, not associated with a char */
- if (line_status & UART_OVERRUN_ERROR)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
- if (port->port.console && port->sysrq) {
- for (i = 0; i < urb->actual_length; ++i)
- if (!usb_serial_handle_sysrq_char(port, data[i]))
- tty_insert_flip_char(tty, data[i], tty_flag);
- } else {
- tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
- urb->actual_length);
- }
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
- /* 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,
- .usb_driver = &pl2303_driver,
- .num_ports = 1,
- .bulk_in_size = 256,
- .bulk_out_size = 256,
- .open = pl2303_open,
- .close = pl2303_close,
- .dtr_rts = pl2303_dtr_rts,
- .carrier_raised = pl2303_carrier_raised,
- .ioctl = pl2303_ioctl,
- .break_ctl = pl2303_break_ctl,
- .set_termios = pl2303_set_termios,
- .tiocmget = pl2303_tiocmget,
- .tiocmset = pl2303_tiocmset,
- .process_read_urb = pl2303_process_read_urb,
- .read_int_callback = pl2303_read_int_callback,
- .attach = pl2303_startup,
- .release = pl2303_release,
- };
- static int __init pl2303_init(void)
- {
- int retval;
- retval = usb_serial_register(&pl2303_device);
- if (retval)
- goto failed_usb_serial_register;
- retval = usb_register(&pl2303_driver);
- if (retval)
- goto failed_usb_register;
- printk(KERN_INFO KBUILD_MODNAME “: “ DRIVER_DESC “\n”);
- return 0;
- failed_usb_register:
- usb_serial_deregister(&pl2303_device);
- failed_usb_serial_register:
- return retval;
- }
- static void __exit pl2303_exit(void)
- {
- usb_deregister(&pl2303_driver);
- usb_serial_deregister(&pl2303_device);
- }
- module_init(pl2303_init);
- module_exit(pl2303_exit);
- MODULE_DESCRIPTION(DRIVER_DESC);
- MODULE_LICENSE(“GPL”);
- module_param(debug, bool, S_IRUGO | S_IWUSR);
- MODULE_PARM_DESC(debug, “Debug enabled or not”);
[cpp]
- #KVER = /usr/src/linux
- KVER = /lib/modules/`uname -r`/build
- CURDIR = $(shell pwd)
- # Kernel modules
- obj-m := pl2303.o
- build: kernel_modules
- kernel_modules:
- $(MAKE) -C $(KVER) M=$(CURDIR) modules
- clean:
- $(MAKE) -C $(KVER) M=$(CURDIR) clean