pl2303.c revision 3e152505a57db6622deb1322c22551c046e33d16
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prolific PL2303 USB to serial adaptor driver 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 44d0dce3e0b794942407391c52f8dd2760802f391Greg Kroah-Hartman * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com) 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2003 IBM Corp. 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Original driver for 2.2.x by anonymous 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 94d0dce3e0b794942407391c52f8dd2760802f391Greg Kroah-Hartman * This program is free software; you can redistribute it and/or 104d0dce3e0b794942407391c52f8dd2760802f391Greg Kroah-Hartman * modify it under the terms of the GNU General Public License version 114d0dce3e0b794942407391c52f8dd2760802f391Greg Kroah-Hartman * 2 as published by the Free Software Foundation. 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * See Documentation/usb/usb-serial.txt for more information on using this driver 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/kernel.h> 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/errno.h> 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/slab.h> 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty.h> 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_driver.h> 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/tty_flip.h> 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/serial.h> 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/moduleparam.h> 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/spinlock.h> 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <asm/uaccess.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb.h> 30a969888ce91673c7f4b86520d851a6f0d5a5fa7dGreg Kroah-Hartman#include <linux/usb/serial.h> 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "pl2303.h" 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version Information 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define DRIVER_DESC "Prolific PL2303 USB to serial adaptor driver" 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int debug; 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PL2303_CLOSING_WAIT (30*HZ) 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PL2303_BUF_SIZE 1024 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define PL2303_TMP_BUF_SIZE 1024 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct pl2303_buf { 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int buf_size; 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf_buf; 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf_get; 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char *buf_put; 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_device_id id_table [] = { 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, 553d861494729c70d9ebeb7d93caa107897925c355Peter Moulder { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, 598a28dea3accda319d51a1bf4d3e280771d946f78Masakazu Mokuno { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, 6558381719845d9ee19a321c2eb69cfa9b7886be9aWang Jun { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, 6857833ea6b95a3995149f1f6d1a8d8862ab7a0ba2Akira Tsukamoto { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID_USB60F) }, 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, 75a8310f3b8b713e52d77c56d4b8865685ee40d02aLuiz Fernando Capitulino { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, 761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, 77a8310f3b8b713e52d77c56d4b8865685ee40d02aLuiz Fernando Capitulino { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, 78e7beb667842ad0f6ec95a22e7c88e71dfbd60649Andreas Loibl { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, 79acbb36f116243bed515357264ecbb6ff9c6d2a5bPeter Favrholdt { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, 80c6c27721a42b991965bb792d5c196b8331d008d5Christian Lindner { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, 81c6c27721a42b991965bb792d5c196b8331d008d5Christian Lindner { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, 826cceb05f8df6e28ab90f44bdeba50d33928cdee5Denis MONTERRAT { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, 83c6c27721a42b991965bb792d5c196b8331d008d5Christian Lindner { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, 84491b04ce1c9adfa0cd73f095086f3c37da81b667Dick Streefland { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, 853b92847425a98d26ad9d2b8682d3ce6020c90752Matthew Meno { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, 86b7aa94b682dc6b6dcdc01d36f8e65cef5aae81e2Kim Oldfield { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, 878fd801339350b63cbb90730ff8b2be349fb3dc67Johannes Steingraeber { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, 882d94b981c7fcb0fba4aa3442cd180066dbedbbc8YOSHIFUJI Hideaki { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, 899e3285dba5cac12d656da66fd7d420ff1bc0ecc0Magnus Damm { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, 90002e8f2c80c6be76bb312940bc278fc10b2b2487Piotr Roszatycki { USB_DEVICE(HL340_VENDOR_ID, HL340_PRODUCT_ID) }, 91cc311ee7d29d96f0bf15599f4456012d6f5ea23cDamien Stuart { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } /* Terminating entry */ 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 95372db8a780f63368c6960a167b7a19aad776d704Thiago GalesiMODULE_DEVICE_TABLE(usb, id_table); 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_driver pl2303_driver = { 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "pl2303", 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .probe = usb_serial_probe, 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disconnect = usb_serial_disconnect, 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = id_table, 102ba9dc657af86d05d2971633e57d1f6f94ed60472Greg Kroah-Hartman .no_dynamic_id = 1, 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_LINE_REQUEST_TYPE 0x21 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_LINE_REQUEST 0x20 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_CONTROL_REQUEST_TYPE 0x21 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_CONTROL_REQUEST 0x22 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CONTROL_DTR 0x01 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CONTROL_RTS 0x02 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_REQUEST_TYPE 0x21 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_REQUEST 0x23 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_ON 0xffff 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_OFF 0x0000 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GET_LINE_REQUEST_TYPE 0xa1 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GET_LINE_REQUEST 0x21 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_WRITE_REQUEST_TYPE 0x40 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_WRITE_REQUEST 0x01 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_READ_REQUEST_TYPE 0xc0 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_READ_REQUEST 0x01 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_STATE 0x08 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_STATE_TRANSIENT_MASK 0x74 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_DCD 0x01 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_DSR 0x02 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_BREAK_ERROR 0x04 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_RING 0x08 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_FRAME_ERROR 0x10 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_PARITY_ERROR 0x20 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_OVERRUN_ERROR 0x40 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_CTS 0x80 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum pl2303_type { 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type_0, /* don't know the difference between type 0 and */ 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type_1, /* type 1, until someone from prolific tells us... */ 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HX, /* HX version of the pl2303 chip */ 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct pl2303_private { 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_buf *buf; 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int write_urb_in_use; 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t delta_msr_wait; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 line_control; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 line_status; 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 termios_initialized; 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum pl2303_type type; 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 156572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 157572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_alloc 158572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 159572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Allocate a circular buffer and all associated memory. 160572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 161572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic struct pl2303_buf *pl2303_buf_alloc(unsigned int size) 162572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 163572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi struct pl2303_buf *pb; 164572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 165572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (size == 0) 166572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return NULL; 167572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 1685cbded585d129d0226cb48ac4202b253c781be26Robert P. J. Day pb = kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL); 169572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 170572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return NULL; 171572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 172572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_buf = kmalloc(size, GFP_KERNEL); 173572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb->buf_buf == NULL) { 174572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi kfree(pb); 175572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return NULL; 176572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 177572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 178572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_size = size; 179572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get = pb->buf_put = pb->buf_buf; 180572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 181572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return pb; 182572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 183572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 184572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 185572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_free 186572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 187572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Free the buffer and all associated memory. 188572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 189572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic void pl2303_buf_free(struct pl2303_buf *pb) 190572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 191572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb) { 192572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi kfree(pb->buf_buf); 193572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi kfree(pb); 194572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 195572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 196572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 197572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 198572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_clear 199572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 200572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Clear out all data in the circular buffer. 201572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 202572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic void pl2303_buf_clear(struct pl2303_buf *pb) 203572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 204572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb != NULL) 205572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get = pb->buf_put; 206572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* equivalent to a get of all data available */ 207572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 208572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 209572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 210572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_data_avail 211572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 212572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Return the number of bytes of data available in the circular 213572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * buffer. 214572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 215572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb) 216572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 217572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 218572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 219572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 220572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return ((pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size); 221572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 222572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 223572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 224572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_space_avail 225572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 226572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Return the number of bytes of space available in the circular 227572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * buffer. 228572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 229572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb) 230572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 231572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 232572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 233572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 234572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return ((pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size); 235572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 236572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 237572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 238572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_put 239572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 240572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Copy data data from a user buffer and put it into the circular buffer. 241572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Restrict to the amount of space available. 242572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 243572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Return the number of bytes copied. 244572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 245572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, 246572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int count) 247572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 248572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int len; 249572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 250572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 251572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 252572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 253572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi len = pl2303_buf_space_avail(pb); 254572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count > len) 255572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi count = len; 256572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 257572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count == 0) 258572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 259572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 260572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi len = pb->buf_buf + pb->buf_size - pb->buf_put; 261572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count > len) { 262572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(pb->buf_put, buf, len); 263572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(pb->buf_buf, buf+len, count - len); 264572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_put = pb->buf_buf + count - len; 265572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } else { 266572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(pb->buf_put, buf, count); 267572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count < len) 268572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_put += count; 269572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi else /* count == len */ 270572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_put = pb->buf_buf; 271572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 272572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 273572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return count; 274572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 275572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 276572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 277572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_get 278572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 279572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Get data from the circular buffer and copy to the given buffer. 280572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Restrict to the amount of data available. 281572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 282572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Return the number of bytes copied. 283572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 284572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, 285572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int count) 286572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 287572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int len; 288572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 289572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 290572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 291572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 292572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi len = pl2303_buf_data_avail(pb); 293572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count > len) 294572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi count = len; 295572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 296572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count == 0) 297572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 298572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 299572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi len = pb->buf_buf + pb->buf_size - pb->buf_get; 300572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count > len) { 301572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(buf, pb->buf_get, len); 302572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(buf+len, pb->buf_buf, count - len); 303572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get = pb->buf_buf + count - len; 304572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } else { 305572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(buf, pb->buf_get, count); 306572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count < len) 307572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get += count; 308572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi else /* count == len */ 309572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get = pb->buf_buf; 310572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 311572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 312572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return count; 313572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 315eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharpstatic int pl2303_vendor_read(__u16 value, __u16 index, 316eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp struct usb_serial *serial, unsigned char *buf) 317eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp{ 318eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp int res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 319eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, 320eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp value, index, buf, 1, 100); 321eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp dbg("0x%x:0x%x:0x%x:0x%x %d - %x", VENDOR_READ_REQUEST_TYPE, 322eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp VENDOR_READ_REQUEST, value, index, res, buf[0]); 323eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp return res; 324eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp} 325eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp 326eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharpstatic int pl2303_vendor_write(__u16 value, __u16 index, 327eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp struct usb_serial *serial) 328eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp{ 329eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp int res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 330eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, 331eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp value, index, NULL, 0, 100); 332eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp dbg("0x%x:0x%x:0x%x:0x%x %d", VENDOR_WRITE_REQUEST_TYPE, 333eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp VENDOR_WRITE_REQUEST, value, index, res); 334eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp return res; 335eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp} 336eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp 337372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_startup(struct usb_serial *serial) 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv; 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum pl2303_type type = type_0; 3413e152505a57db6622deb1322c22551c046e33d16Sarah Sharp unsigned char *buf; 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3443e152505a57db6622deb1322c22551c046e33d16Sarah Sharp buf = kmalloc(10, GFP_KERNEL); 3453e152505a57db6622deb1322c22551c046e33d16Sarah Sharp if (buf == NULL) 3463e152505a57db6622deb1322c22551c046e33d16Sarah Sharp return -ENOMEM; 3473e152505a57db6622deb1322c22551c046e33d16Sarah Sharp 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (serial->dev->descriptor.bDeviceClass == 0x02) 3491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = type_0; 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = HX; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (serial->dev->descriptor.bDeviceClass == 0x00) 3531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = type_1; 3541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (serial->dev->descriptor.bDeviceClass == 0xFF) 3551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = type_1; 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("device type: %d", type); 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < serial->num_ports; ++i) { 35980b6ca48321974a6566a1c9048ba34f60420bca6Eric Sesterhenn priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!priv) 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&priv->lock); 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (priv->buf == NULL) { 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(priv); 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&priv->delta_msr_wait); 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->type = type; 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_port_data(serial->port[i], priv); 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3723e152505a57db6622deb1322c22551c046e33d16Sarah Sharp 3733e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_read(0x8484, 0, serial, buf); 3743e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_write(0x0404, 0, serial); 3753e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_read(0x8484, 0, serial, buf); 3763e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_read(0x8383, 0, serial, buf); 3773e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_read(0x8484, 0, serial, buf); 3783e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_write(0x0404, 1, serial); 3793e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_read(0x8484, 0, serial, buf); 3803e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_read(0x8383, 0, serial, buf); 3813e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_write(0, 1, serial); 3823e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_write(1, 0, serial); 3833e152505a57db6622deb1322c22551c046e33d16Sarah Sharp if (type == HX) 3843e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_write(2, 0x44, serial); 3853e152505a57db6622deb1322c22551c046e33d16Sarah Sharp else 3863e152505a57db6622deb1322c22551c046e33d16Sarah Sharp pl2303_vendor_write(2, 0x24, serial); 3873e152505a57db6622deb1322c22551c046e33d16Sarah Sharp 3883e152505a57db6622deb1322c22551c046e33d16Sarah Sharp kfree(buf); 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldscleanup: 3923e152505a57db6622deb1322c22551c046e33d16Sarah Sharp kfree(buf); 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (--i; i>=0; --i) { 3941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv = usb_get_serial_port_data(serial->port[i]); 3951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pl2303_buf_free(priv->buf); 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(priv); 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_port_data(serial->port[i], NULL); 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 4001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 402372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int set_control_lines(struct usb_device *dev, u8 value) 4031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 4051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 406372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 407372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, 408372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi value, 0, NULL, 0, 100); 4091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - value = %d, retval = %d", __FUNCTION__, value, retval); 4101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 4111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void pl2303_send(struct usb_serial_port *port) 4141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count, result; 4161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 4171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 4181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 4201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 4221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (priv->write_urb_in_use) { 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, 429372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi port->bulk_out_size); 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count == 0) { 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->write_urb_in_use = 1; 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 440372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, 441372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi port->write_urb->transfer_buffer); 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->transfer_buffer_length = count; 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->dev = port->serial->dev; 445372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) { 447372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&port->dev, "%s - failed submitting write urb," 448372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " error %d\n", __FUNCTION__, result); 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->write_urb_in_use = 0; 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // TODO: reschedule pl2303_send 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 453cf2c7481d2ff7f0c266de873b2fe93883e9782f9Pete Zaitcev usb_serial_port_softint(port); 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 456572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic int pl2303_write(struct usb_serial_port *port, const unsigned char *buf, 457572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi int count) 458572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 459572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi struct pl2303_private *priv = usb_get_serial_port_data(port); 460572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned long flags; 461572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 462572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi dbg("%s - port %d, %d bytes", __FUNCTION__, port->number, count); 463572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 464572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (!count) 465572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return count; 466572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 467572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_lock_irqsave(&priv->lock, flags); 468572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi count = pl2303_buf_put(priv->buf, buf, count); 469572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 470572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 471572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pl2303_send(port); 472572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 473572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return count; 474572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 475572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int pl2303_write_room(struct usb_serial_port *port) 4771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int room = 0; 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds room = pl2303_buf_space_avail(priv->buf); 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - returns %d", __FUNCTION__, room); 4891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return room; 4901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int pl2303_chars_in_buffer(struct usb_serial_port *port) 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int chars = 0; 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds chars = pl2303_buf_data_avail(priv->buf); 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 5031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - returns %d", __FUNCTION__, chars); 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return chars; 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 508372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void pl2303_set_termios(struct usb_serial_port *port, 509606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox struct ktermios *old_termios) 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int cflag; 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *buf; 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int baud; 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 control; 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!priv->termios_initialized) { 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(port->tty->termios) = tty_std_termios; 525372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi port->tty->termios->c_cflag = B9600 | CS8 | CREAD | 526372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi HUPCL | CLOCAL; 527df64c47184aedf34fd2a69a4b7f68584fe982fdfAlan Cox port->tty->termios->c_ispeed = 9600; 528df64c47184aedf34fd2a69a4b7f68584fe982fdfAlan Cox port->tty->termios->c_ospeed = 9600; 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->termios_initialized = 1; 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 533bf5e5834bffc62b50cd4a201804506eb11ef1af8Alan Cox /* The PL2303 is reported to lose bytes if you change 534bf5e5834bffc62b50cd4a201804506eb11ef1af8Alan Cox serial settings even to the same values as before. Thus 535bf5e5834bffc62b50cd4a201804506eb11ef1af8Alan Cox we actually need to filter in this specific case */ 536bf5e5834bffc62b50cd4a201804506eb11ef1af8Alan Cox 537bf5e5834bffc62b50cd4a201804506eb11ef1af8Alan Cox if (!tty_termios_hw_change(port->tty->termios, old_termios)) 538bf5e5834bffc62b50cd4a201804506eb11ef1af8Alan Cox return; 539bf5e5834bffc62b50cd4a201804506eb11ef1af8Alan Cox 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cflag = port->tty->termios->c_cflag; 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 542372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi buf = kzalloc(7, GFP_KERNEL); 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buf) { 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__); 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 548372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 549372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, 550372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 0, 0, buf, 7, 100); 551372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, 552372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CSIZE) { 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cflag & CSIZE) { 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS5: buf[6] = 5; break; 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS6: buf[6] = 6; break; 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS7: buf[6] = 7; break; 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS8: buf[6] = 8; break; 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - data bits = %d", __FUNCTION__, buf[6]); 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 565e0c79f512cf469bc11fe9d53a4dcc5d0c39a3b79Alan Cox baud = tty_get_baud_rate(port->tty);; 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - baud = %d", __FUNCTION__, baud); 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (baud) { 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = baud & 0xff; 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = (baud >> 8) & 0xff; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[2] = (baud >> 16) & 0xff; 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[3] = (baud >> 24) & 0xff; 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[4]=0 is 1 stop bits */ 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[4]=1 is 1.5 stop bits */ 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[4]=2 is 2 stop bits */ 5771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CSTOPB) { 5781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[4] = 2; 5791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - stop bits = 2", __FUNCTION__); 5801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[4] = 0; 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - stop bits = 1", __FUNCTION__); 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & PARENB) { 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=0 is none parity */ 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=1 is odd parity */ 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=2 is even parity */ 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=3 is mark parity */ 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=4 is space parity */ 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & PARODD) { 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = 1; 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - parity = odd", __FUNCTION__); 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = 2; 5961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - parity = even", __FUNCTION__); 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = 0; 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - parity = none", __FUNCTION__); 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 603372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 604372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, 605372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 0, 0, buf, 7, 100); 606372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("0x21:0x20:0:0 %d", i); 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* change control lines if we are switching to or from B0 */ 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control = priv->line_control; 6111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((cflag & CBAUD) == B0) 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control |= (CONTROL_DTR | CONTROL_RTS); 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (control != priv->line_control) { 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control = priv->line_control; 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 6181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_control_lines(serial->dev, control); 6191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 6211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 622372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 6231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; 6241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 625372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 626372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, 627372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 0, 0, buf, 7, 100); 628372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, 6291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); 6301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CRTSCTS) { 6321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (priv->type == HX) 633eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp pl2303_vendor_write(0x0, 0x61, serial); 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 635eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp pl2303_vendor_write(0x0, 0x41, serial); 636715f9527c1c1edd1a9c7a55ab4535211279c9374t.sefzick } else { 637eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp pl2303_vendor_write(0x0, 0x0, serial); 6381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 639572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 640df64c47184aedf34fd2a69a4b7f68584fe982fdfAlan Cox /* FIXME: Need to read back resulting baud rate */ 641df64c47184aedf34fd2a69a4b7f68584fe982fdfAlan Cox if (baud) 642df64c47184aedf34fd2a69a4b7f68584fe982fdfAlan Cox tty_encode_baud_rate(port->tty, baud, baud); 643df64c47184aedf34fd2a69a4b7f68584fe982fdfAlan Cox 644572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi kfree(buf); 645572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 646572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 647572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic void pl2303_close(struct usb_serial_port *port, struct file *filp) 648572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 649572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi struct pl2303_private *priv = usb_get_serial_port_data(port); 650572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned long flags; 651572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int c_cflag; 652572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi int bps; 653572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi long timeout; 654572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi wait_queue_t wait; 655572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 656572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi dbg("%s - port %d", __FUNCTION__, port->number); 657572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 658572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* wait for data to drain from the buffer */ 659572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_lock_irqsave(&priv->lock, flags); 660572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout = PL2303_CLOSING_WAIT; 661572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi init_waitqueue_entry(&wait, current); 662572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi add_wait_queue(&port->tty->write_wait, &wait); 663572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi for (;;) { 664572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi set_current_state(TASK_INTERRUPTIBLE); 665572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pl2303_buf_data_avail(priv->buf) == 0 || 666572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout == 0 || signal_pending(current) || 667572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi !usb_get_intfdata(port->serial->interface)) /* disconnect */ 668572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi break; 669572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 670572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout = schedule_timeout(timeout); 671572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_lock_irqsave(&priv->lock, flags); 672572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 673572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi set_current_state(TASK_RUNNING); 674572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi remove_wait_queue(&port->tty->write_wait, &wait); 675572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* clear out any remaining data in the buffer */ 676572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pl2303_buf_clear(priv->buf); 677572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 678572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 679572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* wait for characters to drain from the device */ 680572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* (this is long enough for the entire 256 byte */ 681572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* pl2303 hardware buffer to drain with no flow */ 682572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* control for data rates of 1200 bps or more, */ 683572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* for lower rates we should really know how much */ 684572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* data is in the buffer to compute a delay */ 685572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* that is not unnecessarily long) */ 686572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi bps = tty_get_baud_rate(port->tty); 687572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (bps > 1200) 688572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout = max((HZ*2560)/bps,HZ/10); 689572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi else 690572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout = 2*HZ; 691572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi schedule_timeout_interruptible(timeout); 692572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 693572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* shutdown our urbs */ 694572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi dbg("%s - shutting down urbs", __FUNCTION__); 695572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi usb_kill_urb(port->write_urb); 696572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi usb_kill_urb(port->read_urb); 697572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi usb_kill_urb(port->interrupt_in_urb); 698572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 699572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (port->tty) { 700572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi c_cflag = port->tty->termios->c_cflag; 701572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (c_cflag & HUPCL) { 702572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* drop DTR and RTS */ 703572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_lock_irqsave(&priv->lock, flags); 704572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi priv->line_control = 0; 705572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 706572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi set_control_lines(port->serial->dev, 0); 707572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 708572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 711372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_open(struct usb_serial_port *port, struct file *filp) 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 713606d099cdd1080bbb50ea50dc52d98252f8f10a1Alan Cox struct ktermios tmp_termios; 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7201694899fd1af43636351aac97f415fd3c9cefb1dDariusz M if (priv->type != HX) { 7211694899fd1af43636351aac97f415fd3c9cefb1dDariusz M usb_clear_halt(serial->dev, port->write_urb->pipe); 7221694899fd1af43636351aac97f415fd3c9cefb1dDariusz M usb_clear_halt(serial->dev, port->read_urb->pipe); 7233e152505a57db6622deb1322c22551c046e33d16Sarah Sharp } else { 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* reset upstream data pipes */ 725eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp pl2303_vendor_write(8, 0, serial); 726eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp pl2303_vendor_write(9, 0, serial); 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Setup termios */ 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port->tty) { 731372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi pl2303_set_termios(port, &tmp_termios); 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //FIXME: need to assert RTS and DTR if CRTSCTS off 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - submitting read urb", __FUNCTION__); 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->read_urb->dev = serial->dev; 738372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_submit_urb(port->read_urb, GFP_KERNEL); 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) { 740372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&port->dev, "%s - failed submitting read urb," 741372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " error %d\n", __FUNCTION__, result); 742372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi pl2303_close(port, NULL); 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EPROTO; 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - submitting interrupt urb", __FUNCTION__); 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->interrupt_in_urb->dev = serial->dev; 748372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 7491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) { 750372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&port->dev, "%s - failed submitting interrupt urb," 751372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " error %d\n", __FUNCTION__, result); 752372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi pl2303_close(port, NULL); 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EPROTO; 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 758372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_tiocmset(struct usb_serial_port *port, struct file *file, 759372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi unsigned int set, unsigned int clear) 7601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 control; 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7656fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner if (!usb_get_intfdata(port->serial->interface)) 7666fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner return -ENODEV; 7676fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner 768372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control |= CONTROL_RTS; 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control |= CONTROL_DTR; 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control &= ~CONTROL_RTS; 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control &= ~CONTROL_DTR; 7771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control = priv->line_control; 778372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 780372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi return set_control_lines(port->serial->dev, control); 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 783372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_tiocmget(struct usb_serial_port *port, struct file *file) 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int mcr; 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int status; 7891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int result; 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s (%d)", __FUNCTION__, port->number); 7921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7936fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner if (!usb_get_intfdata(port->serial->interface)) 7946fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner return -ENODEV; 7956fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner 796372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mcr = priv->line_control; 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = priv->line_status; 799372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) 8021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) 8031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_CTS) ? TIOCM_CTS : 0) 8041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_DSR) ? TIOCM_DSR : 0) 8051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_RING) ? TIOCM_RI : 0) 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_DCD) ? TIOCM_CD : 0); 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - result = %x", __FUNCTION__, result); 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return result; 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int wait_modem_info(struct usb_serial_port *port, unsigned int arg) 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int prevstatus; 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int status; 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int changed; 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 821372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prevstatus = priv->line_status; 823372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (1) { 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds interruptible_sleep_on(&priv->delta_msr_wait); 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* see if a signal did it */ 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ERESTARTSYS; 830372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 831372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 8321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = priv->line_status; 833372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 834372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds changed=prevstatus^status; 836372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (((arg & TIOCM_RNG) && (changed & UART_RING)) || 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((arg & TIOCM_DSR) && (changed & UART_DSR)) || 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((arg & TIOCM_CD) && (changed & UART_DCD)) || 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((arg & TIOCM_CTS) && (changed & UART_CTS)) ) { 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prevstatus = status; 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTREACHED */ 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 849372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_ioctl(struct usb_serial_port *port, struct file *file, 850372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi unsigned int cmd, unsigned long arg) 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd); 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cmd) { 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCMIWAIT: 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return wait_modem_info(port, arg); 8581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s not supported = 0x%04x", __FUNCTION__, cmd); 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOIOCTLCMD; 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 867372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void pl2303_break_ctl(struct usb_serial_port *port, int break_state) 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 state; 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (break_state == 0) 8761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds state = BREAK_OFF; 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds state = BREAK_ON; 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - turning break %s", __FUNCTION__, state==BREAK_OFF ? "off" : "on"); 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 881372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 882372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi BREAK_REQUEST, BREAK_REQUEST_TYPE, state, 883372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 0, NULL, 0, 100); 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - error sending break = %d", __FUNCTION__, result); 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 888372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void pl2303_shutdown(struct usb_serial *serial) 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 8911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv; 8921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s", __FUNCTION__); 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < serial->num_ports; ++i) { 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv = usb_get_serial_port_data(serial->port[i]); 8971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (priv) { 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pl2303_buf_free(priv->buf); 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(priv); 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_port_data(serial->port[i], NULL); 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 902372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi } 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 90597bb13ec5bc156352cca8af90080597e04299a73Flavio Leitnerstatic void pl2303_update_line_status(struct usb_serial_port *port, 90697bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned char *data, 90797bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned int actual_length) 90897bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner{ 90997bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 91097bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner struct pl2303_private *priv = usb_get_serial_port_data(port); 91197bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned long flags; 91297bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner u8 status_idx = UART_STATE; 91395f209f93663103db2a8fb989e226ac68a98b036Horst Schirmeier u8 length = UART_STATE + 1; 9149c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi u16 idv, idp; 91597bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 9169c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi idv = le16_to_cpu(port->serial->dev->descriptor.idVendor); 9179c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi idp = le16_to_cpu(port->serial->dev->descriptor.idProduct); 9189c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi 9199c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi 9209c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi if (idv == SIEMENS_VENDOR_ID) { 9219c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi if (idp == SIEMENS_PRODUCT_ID_X65 || 9229c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi idp == SIEMENS_PRODUCT_ID_SX1 || 9239c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi idp == SIEMENS_PRODUCT_ID_X75) { 9249c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi 9259c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi length = 1; 9269c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi status_idx = 0; 9279c53761681497d598a31ed2f6b29b5b3480c49dbThiago Galesi } 92897bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner } 92997bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 93097bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner if (actual_length < length) 931a009b75aa0ed55f0bc473c8a3b3e872cbca807ecLuiz Fernando N. Capitulino return; 93297bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 93397bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner /* Save off the uart status for others to look at */ 93497bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner spin_lock_irqsave(&priv->lock, flags); 93597bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner priv->line_status = data[status_idx]; 93697bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner spin_unlock_irqrestore(&priv->lock, flags); 937372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi wake_up_interruptible(&priv->delta_msr_wait); 93897bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner} 9391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9407d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void pl2303_read_int_callback(struct urb *urb) 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = urb->transfer_buffer; 94497bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned int actual_length = urb->actual_length; 945461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman int status = urb->status; 946461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman int retval; 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s (%d)", __FUNCTION__, port->number); 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 950461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman switch (status) { 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0: 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* success */ 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ECONNRESET: 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ENOENT: 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ESHUTDOWN: 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this urb is terminated, clean up */ 958372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("%s - urb shutting down with status: %d", __FUNCTION__, 959461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman status); 9601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 962372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("%s - nonzero urb status received: %d", __FUNCTION__, 963461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman status); 9641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 967372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_serial_debug_data(debug, &port->dev, __FUNCTION__, 968372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi urb->actual_length, urb->transfer_buffer); 969372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 97097bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner pl2303_update_line_status(port, data, actual_length); 9711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 973461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman retval = usb_submit_urb(urb, GFP_ATOMIC); 974461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman if (retval) 975372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&urb->dev->dev, 976372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi "%s - usb_submit_urb failed with result %d\n", 977461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman __FUNCTION__, retval); 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9807d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void pl2303_read_bulk_callback(struct urb *urb) 9811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty; 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = urb->transfer_buffer; 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 989461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman int status = urb->status; 990461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman u8 line_status; 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char tty_flag; 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 995461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman if (status) { 996461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman dbg("%s - urb status = %d", __FUNCTION__, status); 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!port->open_count) { 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port is closed, exiting.", __FUNCTION__); 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1001461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman if (status == -EPROTO) { 1002372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi /* PL2303 mysteriously fails with -EPROTO reschedule 1003372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi * the read */ 1004372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("%s - caught -EPROTO, resubmitting the urb", 1005372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi __FUNCTION__); 10061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->dev = port->serial->dev; 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = usb_submit_urb(urb, GFP_ATOMIC); 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) 1009372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&urb->dev->dev, "%s - failed" 1010372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " resubmitting read urb, error %d\n", 1011372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi __FUNCTION__, result); 10121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - unable to handle the error, exiting.", __FUNCTION__); 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1018372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_serial_debug_data(debug, &port->dev, __FUNCTION__, 1019372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi urb->actual_length, data); 10201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get tty_flag from status */ 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flag = TTY_NORMAL; 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 1025461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman line_status = priv->line_status; 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_status &= ~UART_STATE_TRANSIENT_MASK; 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 1028372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi wake_up_interruptible(&priv->delta_msr_wait); 10291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* break takes precedence over parity, */ 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* which takes precedence over framing errors */ 1032461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman if (line_status & UART_BREAK_ERROR ) 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flag = TTY_BREAK; 1034461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman else if (line_status & UART_PARITY_ERROR) 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flag = TTY_PARITY; 1036461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman else if (line_status & UART_FRAME_ERROR) 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flag = TTY_FRAME; 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - tty_flag = %d", __FUNCTION__, tty_flag); 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty = port->tty; 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty && urb->actual_length) { 104233f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox tty_buffer_request_room(tty, urb->actual_length + 1); 10431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* overrun is special, not associated with a char */ 1044461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman if (line_status & UART_OVERRUN_ERROR) 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_insert_flip_char(tty, 0, TTY_OVERRUN); 104633f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox for (i = 0; i < urb->actual_length; ++i) 1047372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi tty_insert_flip_char(tty, data[i], tty_flag); 1048372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi tty_flip_buffer_push(tty); 10491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Schedule the next read _if_ we are still open */ 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port->open_count) { 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->dev = port->serial->dev; 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = usb_submit_urb(urb, GFP_ATOMIC); 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) 1056372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&urb->dev->dev, "%s - failed resubmitting" 1057372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " read urb, error %d\n", __FUNCTION__, result); 10581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10637d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void pl2303_write_bulk_callback(struct urb *urb) 10641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 1068461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman int status = urb->status; 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1072461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman switch (status) { 10731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0: 10741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* success */ 10751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 10761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ECONNRESET: 10771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ENOENT: 10781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ESHUTDOWN: 10791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this urb is terminated, clean up */ 1080372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("%s - urb shutting down with status: %d", __FUNCTION__, 1081461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman status); 10821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->write_urb_in_use = 0; 10831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 10851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* error in the urb, so we have to resubmit it */ 10861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - Overflow in write", __FUNCTION__); 1087372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, 1088461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman status); 10891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->transfer_buffer_length = 1; 10901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->dev = port->serial->dev; 1091372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 10921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) 1093372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&urb->dev->dev, "%s - failed resubmitting write" 1094372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " urb, error %d\n", __FUNCTION__, result); 10951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 10961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->write_urb_in_use = 0; 11001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* send any buffered data */ 11021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pl2303_send(port); 11031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1105572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* All of the device info needed for the PL2303 SIO serial converter */ 1106572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic struct usb_serial_driver pl2303_device = { 1107572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .driver = { 1108572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .owner = THIS_MODULE, 1109572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .name = "pl2303", 1110572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi }, 1111572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .id_table = id_table, 1112d9b1b787736852f462dbf277b3ca708cbbf693aeJohannes Hölzl .usb_driver = &pl2303_driver, 1113572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .num_interrupt_in = NUM_DONT_CARE, 1114572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .num_bulk_in = 1, 1115572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .num_bulk_out = 1, 1116572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .num_ports = 1, 1117572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .open = pl2303_open, 1118572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .close = pl2303_close, 1119572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .write = pl2303_write, 1120572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .ioctl = pl2303_ioctl, 1121572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .break_ctl = pl2303_break_ctl, 1122572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .set_termios = pl2303_set_termios, 1123572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .tiocmget = pl2303_tiocmget, 1124572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .tiocmset = pl2303_tiocmset, 1125572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .read_bulk_callback = pl2303_read_bulk_callback, 1126572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .read_int_callback = pl2303_read_int_callback, 1127572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .write_bulk_callback = pl2303_write_bulk_callback, 1128572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .write_room = pl2303_write_room, 1129572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .chars_in_buffer = pl2303_chars_in_buffer, 1130572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .attach = pl2303_startup, 1131572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .shutdown = pl2303_shutdown, 1132572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi}; 11331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1134372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int __init pl2303_init(void) 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 1137372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_serial_register(&pl2303_device); 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto failed_usb_serial_register; 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_register(&pl2303_driver); 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 11431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto failed_usb_register; 114417a882fc0c91477b2582a6dfd4ca93ae7eb58cd3Greg Kroah-Hartman info(DRIVER_DESC); 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfailed_usb_register: 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_serial_deregister(&pl2303_device); 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfailed_usb_serial_register: 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1152372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void __exit pl2303_exit(void) 11531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1154372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_deregister(&pl2303_driver); 1155372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_serial_deregister(&pl2303_device); 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(pl2303_init); 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(pl2303_exit); 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION(DRIVER_DESC); 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(debug, bool, S_IRUGO | S_IWUSR); 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_PARM_DESC(debug, "Debug enabled or not"); 11661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1167