pl2303.c revision 572d3138eb0cf17a2bf36944cc1d2c753578862e
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prolific PL2303 USB to serial adaptor driver 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2001-2004 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 * 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or modify 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it under the terms of the GNU General Public License as published by 11502b95c1cc9e2c855a26f90fc999c5211b8ba957Greg Kroah-Hartman * the Free Software Foundation; either version 2 of the License. 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) }, 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, 6458381719845d9ee19a321c2eb69cfa9b7886be9aWang Jun { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, 701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, 73a8310f3b8b713e52d77c56d4b8865685ee40d02aLuiz Fernando Capitulino { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1) }, 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65) }, 75a8310f3b8b713e52d77c56d4b8865685ee40d02aLuiz Fernando Capitulino { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75) }, 76acbb36f116243bed515357264ecbb6ff9c6d2a5bPeter Favrholdt { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, 77c6c27721a42b991965bb792d5c196b8331d008d5Christian Lindner { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, 78c6c27721a42b991965bb792d5c196b8331d008d5Christian Lindner { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, 796cceb05f8df6e28ab90f44bdeba50d33928cdee5Denis MONTERRAT { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, 80c6c27721a42b991965bb792d5c196b8331d008d5Christian Lindner { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, 81491b04ce1c9adfa0cd73f095086f3c37da81b667Dick Streefland { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, 823b92847425a98d26ad9d2b8682d3ce6020c90752Matthew Meno { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, 83b7aa94b682dc6b6dcdc01d36f8e65cef5aae81e2Kim Oldfield { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } /* Terminating entry */ 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 87372db8a780f63368c6960a167b7a19aad776d704Thiago GalesiMODULE_DEVICE_TABLE(usb, id_table); 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct usb_driver pl2303_driver = { 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .name = "pl2303", 911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .probe = usb_serial_probe, 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .disconnect = usb_serial_disconnect, 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .id_table = id_table, 94ba9dc657af86d05d2971633e57d1f6f94ed60472Greg Kroah-Hartman .no_dynamic_id = 1, 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_LINE_REQUEST_TYPE 0x21 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_LINE_REQUEST 0x20 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_CONTROL_REQUEST_TYPE 0x21 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_CONTROL_REQUEST 0x22 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CONTROL_DTR 0x01 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CONTROL_RTS 0x02 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_REQUEST_TYPE 0x21 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_REQUEST 0x23 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_ON 0xffff 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_OFF 0x0000 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GET_LINE_REQUEST_TYPE 0xa1 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GET_LINE_REQUEST 0x21 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_WRITE_REQUEST_TYPE 0x40 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_WRITE_REQUEST 0x01 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_READ_REQUEST_TYPE 0xc0 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_READ_REQUEST 0x01 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_STATE 0x08 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_STATE_TRANSIENT_MASK 0x74 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_DCD 0x01 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_DSR 0x02 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_BREAK_ERROR 0x04 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_RING 0x08 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_FRAME_ERROR 0x10 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_PARITY_ERROR 0x20 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_OVERRUN_ERROR 0x40 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_CTS 0x80 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum pl2303_type { 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type_0, /* don't know the difference between type 0 and */ 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type_1, /* type 1, until someone from prolific tells us... */ 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds HX, /* HX version of the pl2303 chip */ 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct pl2303_private { 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_buf *buf; 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int write_urb_in_use; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds wait_queue_head_t delta_msr_wait; 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 line_control; 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 line_status; 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 termios_initialized; 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum pl2303_type type; 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 148572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 149572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_alloc 150572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 151572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Allocate a circular buffer and all associated memory. 152572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 153572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic struct pl2303_buf *pl2303_buf_alloc(unsigned int size) 154572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 155572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi struct pl2303_buf *pb; 156572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 157572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (size == 0) 158572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return NULL; 159572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 160572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb = (struct pl2303_buf *)kmalloc(sizeof(struct pl2303_buf), GFP_KERNEL); 161572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 162572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return NULL; 163572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 164572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_buf = kmalloc(size, GFP_KERNEL); 165572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb->buf_buf == NULL) { 166572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi kfree(pb); 167572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return NULL; 168572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 169572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 170572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_size = size; 171572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get = pb->buf_put = pb->buf_buf; 172572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 173572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return pb; 174572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 175572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 176572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 177572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_free 178572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 179572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Free the buffer and all associated memory. 180572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 181572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic void pl2303_buf_free(struct pl2303_buf *pb) 182572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 183572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb) { 184572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi kfree(pb->buf_buf); 185572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi kfree(pb); 186572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 187572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 188572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 189572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 190572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_clear 191572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 192572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Clear out all data in the circular buffer. 193572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 194572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic void pl2303_buf_clear(struct pl2303_buf *pb) 195572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 196572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb != NULL) 197572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get = pb->buf_put; 198572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* equivalent to a get of all data available */ 199572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 200572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 201572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 202572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_data_avail 203572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 204572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Return the number of bytes of data available in the circular 205572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * buffer. 206572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 207572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic unsigned int pl2303_buf_data_avail(struct pl2303_buf *pb) 208572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 209572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 210572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 211572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 212572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return ((pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size); 213572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 214572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 215572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 216572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_space_avail 217572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 218572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Return the number of bytes of space available in the circular 219572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * buffer. 220572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 221572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic unsigned int pl2303_buf_space_avail(struct pl2303_buf *pb) 222572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 223572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 224572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 225572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 226572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return ((pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size); 227572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 228572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 229572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 230572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_put 231572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 232572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Copy data data from a user buffer and put it into the circular buffer. 233572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Restrict to the amount of space available. 234572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 235572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Return the number of bytes copied. 236572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 237572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic unsigned int pl2303_buf_put(struct pl2303_buf *pb, const char *buf, 238572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int count) 239572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 240572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int len; 241572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 242572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 243572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 244572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 245572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi len = pl2303_buf_space_avail(pb); 246572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count > len) 247572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi count = len; 248572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 249572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count == 0) 250572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 251572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 252572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi len = pb->buf_buf + pb->buf_size - pb->buf_put; 253572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count > len) { 254572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(pb->buf_put, buf, len); 255572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(pb->buf_buf, buf+len, count - len); 256572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_put = pb->buf_buf + count - len; 257572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } else { 258572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(pb->buf_put, buf, count); 259572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count < len) 260572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_put += count; 261572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi else /* count == len */ 262572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_put = pb->buf_buf; 263572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 264572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 265572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return count; 266572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 267572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 268572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi/* 269572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * pl2303_buf_get 270572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 271572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Get data from the circular buffer and copy to the given buffer. 272572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Restrict to the amount of data available. 273572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * 274572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi * Return the number of bytes copied. 275572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi */ 276572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic unsigned int pl2303_buf_get(struct pl2303_buf *pb, char *buf, 277572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int count) 278572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 279572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int len; 280572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 281572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pb == NULL) 282572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 283572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 284572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi len = pl2303_buf_data_avail(pb); 285572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count > len) 286572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi count = len; 287572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 288572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count == 0) 289572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return 0; 290572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 291572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi len = pb->buf_buf + pb->buf_size - pb->buf_get; 292572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count > len) { 293572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(buf, pb->buf_get, len); 294572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(buf+len, pb->buf_buf, count - len); 295572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get = pb->buf_buf + count - len; 296572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } else { 297572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi memcpy(buf, pb->buf_get, count); 298572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (count < len) 299572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get += count; 300572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi else /* count == len */ 301572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pb->buf_get = pb->buf_buf; 302572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 303572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 304572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return count; 305572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 3061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 307372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_startup(struct usb_serial *serial) 3081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv; 3101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds enum pl2303_type type = type_0; 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (serial->dev->descriptor.bDeviceClass == 0x02) 3141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = type_0; 3151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) 3161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = HX; 3171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (serial->dev->descriptor.bDeviceClass == 0x00) 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = type_1; 3191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (serial->dev->descriptor.bDeviceClass == 0xFF) 3201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds type = type_1; 3211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("device type: %d", type); 3221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < serial->num_ports; ++i) { 32480b6ca48321974a6566a1c9048ba34f60420bca6Eric Sesterhenn priv = kzalloc(sizeof(struct pl2303_private), GFP_KERNEL); 3251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!priv) 3261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 3271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_init(&priv->lock); 3281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->buf = pl2303_buf_alloc(PL2303_BUF_SIZE); 3291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (priv->buf == NULL) { 3301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(priv); 3311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto cleanup; 3321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds init_waitqueue_head(&priv->delta_msr_wait); 3341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->type = type; 3351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_port_data(serial->port[i], priv); 3361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 3381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldscleanup: 3401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (--i; i>=0; --i) { 3411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv = usb_get_serial_port_data(serial->port[i]); 3421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pl2303_buf_free(priv->buf); 3431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(priv); 3441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_port_data(serial->port[i], NULL); 3451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 3471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 349372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int set_control_lines(struct usb_device *dev, u8 value) 3501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 3521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 353372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 354372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, 355372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi value, 0, NULL, 0, 100); 3561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - value = %d, retval = %d", __FUNCTION__, value, retval); 3571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 3581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void pl2303_send(struct usb_serial_port *port) 3611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 3621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int count, result; 3631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 3641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 3651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 3671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 3691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (priv->write_urb_in_use) { 3711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 3721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 3731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds count = pl2303_buf_get(priv->buf, port->write_urb->transfer_buffer, 376372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi port->bulk_out_size); 3771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (count == 0) { 3791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 3801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 3811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->write_urb_in_use = 1; 3841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 3861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 387372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_serial_debug_data(debug, &port->dev, __FUNCTION__, count, 388372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi port->write_urb->transfer_buffer); 3891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 3901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->transfer_buffer_length = count; 3911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->write_urb->dev = port->serial->dev; 392372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_submit_urb(port->write_urb, GFP_ATOMIC); 3931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) { 394372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&port->dev, "%s - failed submitting write urb," 395372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " error %d\n", __FUNCTION__, result); 3961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->write_urb_in_use = 0; 3971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds // TODO: reschedule pl2303_send 3981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 3991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 400cf2c7481d2ff7f0c266de873b2fe93883e9782f9Pete Zaitcev usb_serial_port_softint(port); 4011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 403572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic int pl2303_write(struct usb_serial_port *port, const unsigned char *buf, 404572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi int count) 405572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 406572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi struct pl2303_private *priv = usb_get_serial_port_data(port); 407572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned long flags; 408572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 409572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi dbg("%s - port %d, %d bytes", __FUNCTION__, port->number, count); 410572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 411572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (!count) 412572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return count; 413572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 414572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_lock_irqsave(&priv->lock, flags); 415572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi count = pl2303_buf_put(priv->buf, buf, count); 416572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 417572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 418572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pl2303_send(port); 419572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 420572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi return count; 421572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 422572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 4231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int pl2303_write_room(struct usb_serial_port *port) 4241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 4261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int room = 0; 4271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 4281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 4301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 4321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds room = pl2303_buf_space_avail(priv->buf); 4331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 4341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - returns %d", __FUNCTION__, room); 4361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return room; 4371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int pl2303_chars_in_buffer(struct usb_serial_port *port) 4401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 4421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int chars = 0; 4431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 4441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 4461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 4481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds chars = pl2303_buf_data_avail(priv->buf); 4491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 4501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - returns %d", __FUNCTION__, chars); 4521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return chars; 4531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 4541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 455372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void pl2303_set_termios(struct usb_serial_port *port, 456372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi struct termios *old_termios) 4571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 4581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 4591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 4601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 4611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int cflag; 4621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *buf; 4631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int baud; 4641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 4651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 control; 4661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 4681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((!port->tty) || (!port->tty->termios)) { 4701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - no tty structures", __FUNCTION__); 4711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 4751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!priv->termios_initialized) { 4761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds *(port->tty->termios) = tty_std_termios; 477372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi port->tty->termios->c_cflag = B9600 | CS8 | CREAD | 478372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi HUPCL | CLOCAL; 4791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->termios_initialized = 1; 4801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 4821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 4831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds cflag = port->tty->termios->c_cflag; 4841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* check that they really want us to change something */ 4851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (old_termios) { 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((cflag == old_termios->c_cflag) && 487372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi (RELEVANT_IFLAG(port->tty->termios->c_iflag) == 488372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi RELEVANT_IFLAG(old_termios->c_iflag))) { 489372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("%s - nothing to change...", __FUNCTION__); 490372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi return; 4911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 494372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi buf = kzalloc(7, GFP_KERNEL); 4951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!buf) { 4961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev_err(&port->dev, "%s - out of memory.\n", __FUNCTION__); 4971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 4981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 4991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 500372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 501372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, 502372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 0, 0, buf, 7, 100); 503372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, 504372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CSIZE) { 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cflag & CSIZE) { 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS5: buf[6] = 5; break; 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS6: buf[6] = 6; break; 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS7: buf[6] = 7; break; 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 5121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case CS8: buf[6] = 8; break; 5131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - data bits = %d", __FUNCTION__, buf[6]); 5151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds baud = 0; 5181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cflag & CBAUD) { 5191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B0: baud = 0; break; 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B75: baud = 75; break; 5211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B150: baud = 150; break; 5221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B300: baud = 300; break; 5231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B600: baud = 600; break; 5241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B1200: baud = 1200; break; 5251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B1800: baud = 1800; break; 5261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B2400: baud = 2400; break; 5271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B4800: baud = 4800; break; 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B9600: baud = 9600; break; 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B19200: baud = 19200; break; 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B38400: baud = 38400; break; 5311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B57600: baud = 57600; break; 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B115200: baud = 115200; break; 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B230400: baud = 230400; break; 5341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case B460800: baud = 460800; break; 5351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 536372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&port->dev, "pl2303 driver does not support" 537372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " the baudrate requested (fix it)\n"); 5381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 5391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - baud = %d", __FUNCTION__, baud); 5411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (baud) { 5421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = baud & 0xff; 5431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[1] = (baud >> 8) & 0xff; 5441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[2] = (baud >> 16) & 0xff; 5451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[3] = (baud >> 24) & 0xff; 5461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[4]=0 is 1 stop bits */ 5491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[4]=1 is 1.5 stop bits */ 5501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[4]=2 is 2 stop bits */ 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CSTOPB) { 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[4] = 2; 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - stop bits = 2", __FUNCTION__); 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[4] = 0; 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - stop bits = 1", __FUNCTION__); 5571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & PARENB) { 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=0 is none parity */ 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=1 is odd parity */ 5621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=2 is even parity */ 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=3 is mark parity */ 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=4 is space parity */ 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & PARODD) { 5661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = 1; 5671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - parity = odd", __FUNCTION__); 5681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = 2; 5701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - parity = even", __FUNCTION__); 5711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = 0; 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - parity = none", __FUNCTION__); 5751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 577372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi i = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 578372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, 579372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 0, 0, buf, 7, 100); 580372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("0x21:0x20:0:0 %d", i); 5811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* change control lines if we are switching to or from B0 */ 5831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 5841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control = priv->line_control; 5851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if ((cflag & CBAUD) == B0) 5861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); 5871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 5881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control |= (CONTROL_DTR | CONTROL_RTS); 5891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (control != priv->line_control) { 5901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control = priv->line_control; 5911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 5921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds set_control_lines(serial->dev, control); 5931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 5951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 596372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 5971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; 5981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 599372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 600372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, 601372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 0, 0, buf, 7, 100); 602372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("0xa1:0x21:0:0 %d - %x %x %x %x %x %x %x", i, 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6]); 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (cflag & CRTSCTS) { 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u16 index; 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (priv->type == HX) 6081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds index = 0x61; 6091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 6101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds index = 0x41; 611372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi i = usb_control_msg(serial->dev, 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_sndctrlpipe(serial->dev, 0), 6131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds VENDOR_WRITE_REQUEST, 6141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds VENDOR_WRITE_REQUEST_TYPE, 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 0x0, index, NULL, 0, 100); 616372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("0x40:0x1:0x0:0x%x %d", index, i); 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 618572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 619572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi kfree(buf); 620572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 621572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 622572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic void pl2303_close(struct usb_serial_port *port, struct file *filp) 623572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 624572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi struct pl2303_private *priv = usb_get_serial_port_data(port); 625572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned long flags; 626572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi unsigned int c_cflag; 627572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi int bps; 628572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi long timeout; 629572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi wait_queue_t wait; 630572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 631572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi dbg("%s - port %d", __FUNCTION__, port->number); 632572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 633572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* wait for data to drain from the buffer */ 634572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_lock_irqsave(&priv->lock, flags); 635572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout = PL2303_CLOSING_WAIT; 636572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi init_waitqueue_entry(&wait, current); 637572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi add_wait_queue(&port->tty->write_wait, &wait); 638572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi for (;;) { 639572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi set_current_state(TASK_INTERRUPTIBLE); 640572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (pl2303_buf_data_avail(priv->buf) == 0 || 641572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout == 0 || signal_pending(current) || 642572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi !usb_get_intfdata(port->serial->interface)) /* disconnect */ 643572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi break; 644572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 645572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout = schedule_timeout(timeout); 646572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_lock_irqsave(&priv->lock, flags); 647572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 648572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi set_current_state(TASK_RUNNING); 649572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi remove_wait_queue(&port->tty->write_wait, &wait); 650572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* clear out any remaining data in the buffer */ 651572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi pl2303_buf_clear(priv->buf); 652572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 653572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 654572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* wait for characters to drain from the device */ 655572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* (this is long enough for the entire 256 byte */ 656572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* pl2303 hardware buffer to drain with no flow */ 657572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* control for data rates of 1200 bps or more, */ 658572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* for lower rates we should really know how much */ 659572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* data is in the buffer to compute a delay */ 660572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* that is not unnecessarily long) */ 661572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi bps = tty_get_baud_rate(port->tty); 662572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (bps > 1200) 663572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout = max((HZ*2560)/bps,HZ/10); 664572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi else 665572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi timeout = 2*HZ; 666572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi schedule_timeout_interruptible(timeout); 667572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 668572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* shutdown our urbs */ 669572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi dbg("%s - shutting down urbs", __FUNCTION__); 670572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi usb_kill_urb(port->write_urb); 671572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi usb_kill_urb(port->read_urb); 672572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi usb_kill_urb(port->interrupt_in_urb); 673572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 674572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (port->tty) { 675572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi c_cflag = port->tty->termios->c_cflag; 676572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi if (c_cflag & HUPCL) { 677572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi /* drop DTR and RTS */ 678572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_lock_irqsave(&priv->lock, flags); 679572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi priv->line_control = 0; 680572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 681572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi set_control_lines(port->serial->dev, 0); 682572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 683572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi } 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 686372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_open(struct usb_serial_port *port, struct file *filp) 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct termios tmp_termios; 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 6911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *buf; 6921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 6931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 6951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6961694899fd1af43636351aac97f415fd3c9cefb1dDariusz M if (priv->type != HX) { 6971694899fd1af43636351aac97f415fd3c9cefb1dDariusz M usb_clear_halt(serial->dev, port->write_urb->pipe); 6981694899fd1af43636351aac97f415fd3c9cefb1dDariusz M usb_clear_halt(serial->dev, port->read_urb->pipe); 6991694899fd1af43636351aac97f415fd3c9cefb1dDariusz M } 7001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf = kmalloc(10, GFP_KERNEL); 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (buf==NULL) 7031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOMEM; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define FISH(a,b,c,d) \ 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result=usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev,0), \ 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds b, a, c, d, buf, 1, 100); \ 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("0x%x:0x%x:0x%x:0x%x %d - %x",a,b,c,d,result,buf[0]); 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SOUP(a,b,c,d) \ 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result=usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev,0), \ 7121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds b, a, c, d, NULL, 0, 100); \ 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("0x%x:0x%x:0x%x:0x%x %d",a,b,c,d,result); 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0x0404, 0); 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8383, 0); 7191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); 7201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0x0404, 1); 7211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8484, 0); 7221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds FISH (VENDOR_READ_REQUEST_TYPE, VENDOR_READ_REQUEST, 0x8383, 0); 7231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 0, 1); 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 1, 0); 7251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (priv->type == HX) { 7271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* HX chip */ 7281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x44); 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* reset upstream data pipes */ 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 8, 0); 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 9, 0); 7321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds SOUP (VENDOR_WRITE_REQUEST_TYPE, VENDOR_WRITE_REQUEST, 2, 0x24); 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(buf); 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Setup termios */ 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port->tty) { 740372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi pl2303_set_termios(port, &tmp_termios); 7411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds //FIXME: need to assert RTS and DTR if CRTSCTS off 7441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - submitting read urb", __FUNCTION__); 7461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->read_urb->dev = serial->dev; 747372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_submit_urb(port->read_urb, GFP_KERNEL); 7481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) { 749372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&port->dev, "%s - failed submitting read urb," 750372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " error %d\n", __FUNCTION__, result); 751372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi pl2303_close(port, NULL); 7521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EPROTO; 7531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - submitting interrupt urb", __FUNCTION__); 7561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds port->interrupt_in_urb->dev = serial->dev; 757372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 7581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) { 759372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&port->dev, "%s - failed submitting interrupt urb," 760372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " error %d\n", __FUNCTION__, result); 761372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi pl2303_close(port, NULL); 7621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -EPROTO; 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 767372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_tiocmset(struct usb_serial_port *port, struct file *file, 768372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi unsigned int set, unsigned int clear) 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 control; 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7746fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner if (!usb_get_intfdata(port->serial->interface)) 7756fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner return -ENODEV; 7766fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner 777372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 7781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 7791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control |= CONTROL_RTS; 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 7811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control |= CONTROL_DTR; 7821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 7831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control &= ~CONTROL_RTS; 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 7851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control &= ~CONTROL_DTR; 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control = priv->line_control; 787372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 7881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 789372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi return set_control_lines(port->serial->dev, control); 7901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 792372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_tiocmget(struct usb_serial_port *port, struct file *file) 7931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 7941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 7951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 7961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int mcr; 7971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int status; 7981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int result; 7991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s (%d)", __FUNCTION__, port->number); 8011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8026fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner if (!usb_get_intfdata(port->serial->interface)) 8036fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner return -ENODEV; 8046fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner 805372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 8061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mcr = priv->line_control; 8071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = priv->line_status; 808372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 8091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) 8111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) 8121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_CTS) ? TIOCM_CTS : 0) 8131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_DSR) ? TIOCM_DSR : 0) 8141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_RING) ? TIOCM_RI : 0) 8151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_DCD) ? TIOCM_CD : 0); 8161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - result = %x", __FUNCTION__, result); 8181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return result; 8201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int wait_modem_info(struct usb_serial_port *port, unsigned int arg) 8231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 8261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int prevstatus; 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int status; 8281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int changed; 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 830372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 8311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prevstatus = priv->line_status; 832372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (1) { 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds interruptible_sleep_on(&priv->delta_msr_wait); 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* see if a signal did it */ 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ERESTARTSYS; 839372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 840372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = priv->line_status; 842372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 843372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds changed=prevstatus^status; 845372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 8461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (((arg & TIOCM_RNG) && (changed & UART_RING)) || 8471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((arg & TIOCM_DSR) && (changed & UART_DSR)) || 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((arg & TIOCM_CD) && (changed & UART_DCD)) || 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((arg & TIOCM_CTS) && (changed & UART_CTS)) ) { 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prevstatus = status; 8531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTREACHED */ 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 858372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_ioctl(struct usb_serial_port *port, struct file *file, 859372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi unsigned int cmd, unsigned long arg) 8601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s (%d) cmd = 0x%04x", __FUNCTION__, port->number, cmd); 8621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cmd) { 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case TIOCMIWAIT: 8651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s (%d) TIOCMIWAIT", __FUNCTION__, port->number); 8661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return wait_modem_info(port, arg); 8671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 8691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s not supported = 0x%04x", __FUNCTION__, cmd); 8701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOIOCTLCMD; 8741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 876372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void pl2303_break_ctl(struct usb_serial_port *port, int break_state) 8771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 8791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 state; 8801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 8811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 8831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (break_state == 0) 8851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds state = BREAK_OFF; 8861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 8871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds state = BREAK_ON; 8881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - turning break %s", __FUNCTION__, state==BREAK_OFF ? "off" : "on"); 8891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 890372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 891372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi BREAK_REQUEST, BREAK_REQUEST_TYPE, state, 892372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 0, NULL, 0, 100); 8931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) 8941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - error sending break = %d", __FUNCTION__, result); 8951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 897372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void pl2303_shutdown(struct usb_serial *serial) 8981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 8991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 9001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv; 9011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s", __FUNCTION__); 9031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds for (i = 0; i < serial->num_ports; ++i) { 9051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv = usb_get_serial_port_data(serial->port[i]); 9061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (priv) { 9071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds pl2303_buf_free(priv->buf); 9081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds kfree(priv); 9091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_set_serial_port_data(serial->port[i], NULL); 9101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 911372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi } 9121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 91497bb13ec5bc156352cca8af90080597e04299a73Flavio Leitnerstatic void pl2303_update_line_status(struct usb_serial_port *port, 91597bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned char *data, 91697bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned int actual_length) 91797bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner{ 91897bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 91997bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner struct pl2303_private *priv = usb_get_serial_port_data(port); 92097bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned long flags; 92197bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner u8 status_idx = UART_STATE; 92295f209f93663103db2a8fb989e226ac68a98b036Horst Schirmeier u8 length = UART_STATE + 1; 92397bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 92497bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner if ((le16_to_cpu(port->serial->dev->descriptor.idVendor) == SIEMENS_VENDOR_ID) && 925b8f4c1d6674463e5824eada1ad7ec799276718bdLuiz Fernando Capitulino (le16_to_cpu(port->serial->dev->descriptor.idProduct) == SIEMENS_PRODUCT_ID_X65 || 926b8f4c1d6674463e5824eada1ad7ec799276718bdLuiz Fernando Capitulino le16_to_cpu(port->serial->dev->descriptor.idProduct) == SIEMENS_PRODUCT_ID_SX1 || 927b8f4c1d6674463e5824eada1ad7ec799276718bdLuiz Fernando Capitulino le16_to_cpu(port->serial->dev->descriptor.idProduct) == SIEMENS_PRODUCT_ID_X75)) { 92897bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner length = 1; 92997bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner status_idx = 0; 93097bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner } 93197bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 93297bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner if (actual_length < length) 933a009b75aa0ed55f0bc473c8a3b3e872cbca807ecLuiz Fernando N. Capitulino return; 93497bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 93597bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner /* Save off the uart status for others to look at */ 93697bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner spin_lock_irqsave(&priv->lock, flags); 93797bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner priv->line_status = data[status_idx]; 93897bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner spin_unlock_irqrestore(&priv->lock, flags); 939372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi wake_up_interruptible(&priv->delta_msr_wait); 94097bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner} 9411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 942372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void pl2303_read_int_callback(struct urb *urb, struct pt_regs *regs) 9431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 9451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = urb->transfer_buffer; 94697bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned int actual_length = urb->actual_length; 9471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int status; 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s (%d)", __FUNCTION__, port->number); 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (urb->status) { 9521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0: 9531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* success */ 9541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 9551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ECONNRESET: 9561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ENOENT: 9571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ESHUTDOWN: 9581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this urb is terminated, clean up */ 959372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("%s - urb shutting down with status: %d", __FUNCTION__, 960372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi urb->status); 9611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 9621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 963372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dbg("%s - nonzero urb status received: %d", __FUNCTION__, 964372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi urb->status); 9651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 9661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 9671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 968372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_serial_debug_data(debug, &port->dev, __FUNCTION__, 969372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi urb->actual_length, urb->transfer_buffer); 970372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 97197bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner pl2303_update_line_status(port, data, actual_length); 9721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 974372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi status = usb_submit_urb(urb, GFP_ATOMIC); 9751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status) 976372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&urb->dev->dev, 977372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi "%s - usb_submit_urb failed with result %d\n", 9781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __FUNCTION__, status); 9791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 981372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void pl2303_read_bulk_callback(struct urb *urb, struct pt_regs *regs) 9821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 9831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 9841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 9851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct tty_struct *tty; 9861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = urb->transfer_buffer; 9871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 9881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int i; 9891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 9901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 status; 9911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds char tty_flag; 9921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 9941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->status) { 9961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - urb->status = %d", __FUNCTION__, urb->status); 9971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (!port->open_count) { 9981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port is closed, exiting.", __FUNCTION__); 9991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (urb->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->status = 0; 10071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->dev = port->serial->dev; 10081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = usb_submit_urb(urb, GFP_ATOMIC); 10091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) 1010372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&urb->dev->dev, "%s - failed" 1011372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " resubmitting read urb, error %d\n", 1012372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi __FUNCTION__, result); 10131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - unable to handle the error, exiting.", __FUNCTION__); 10161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1019372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_serial_debug_data(debug, &port->dev, __FUNCTION__, 1020372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi urb->actual_length, data); 10211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* get tty_flag from status */ 10231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flag = TTY_NORMAL; 10241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 10261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = priv->line_status; 10271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_status &= ~UART_STATE_TRANSIENT_MASK; 10281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 1029372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi wake_up_interruptible(&priv->delta_msr_wait); 10301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* break takes precedence over parity, */ 10321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* which takes precedence over framing errors */ 10331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & UART_BREAK_ERROR ) 10341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flag = TTY_BREAK; 10351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (status & UART_PARITY_ERROR) 10361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flag = TTY_PARITY; 10371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else if (status & UART_FRAME_ERROR) 10381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_flag = TTY_FRAME; 10391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - tty_flag = %d", __FUNCTION__, tty_flag); 10401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty = port->tty; 10421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (tty && urb->actual_length) { 104333f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox tty_buffer_request_room(tty, urb->actual_length + 1); 10441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* overrun is special, not associated with a char */ 10451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (status & UART_OVERRUN_ERROR) 10461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds tty_insert_flip_char(tty, 0, TTY_OVERRUN); 104733f0f88f1c51ae5c2d593d26960c760ea154c2e2Alan Cox for (i = 0; i < urb->actual_length; ++i) 1048372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi tty_insert_flip_char(tty, data[i], tty_flag); 1049372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi tty_flip_buffer_push(tty); 10501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Schedule the next read _if_ we are still open */ 10531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (port->open_count) { 10541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds urb->dev = port->serial->dev; 10551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = usb_submit_urb(urb, GFP_ATOMIC); 10561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) 1057372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi dev_err(&urb->dev->dev, "%s - failed resubmitting" 1058372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi " read urb, error %d\n", __FUNCTION__, result); 10591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 10601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 10621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 10631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1064372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void pl2303_write_bulk_callback(struct urb *urb, struct pt_regs *regs) 10651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 10661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial_port *port = (struct usb_serial_port *) urb->context; 10671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 10681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 10691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dbg("%s - port %d", __FUNCTION__, port->number); 10711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 10721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (urb->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__, 1081372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi urb->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__, 1088372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi urb->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, 1112572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .num_interrupt_in = NUM_DONT_CARE, 1113572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .num_bulk_in = 1, 1114572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .num_bulk_out = 1, 1115572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .num_ports = 1, 1116572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .open = pl2303_open, 1117572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .close = pl2303_close, 1118572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .write = pl2303_write, 1119572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .ioctl = pl2303_ioctl, 1120572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .break_ctl = pl2303_break_ctl, 1121572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .set_termios = pl2303_set_termios, 1122572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .tiocmget = pl2303_tiocmget, 1123572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .tiocmset = pl2303_tiocmset, 1124572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .read_bulk_callback = pl2303_read_bulk_callback, 1125572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .read_int_callback = pl2303_read_int_callback, 1126572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .write_bulk_callback = pl2303_write_bulk_callback, 1127572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .write_room = pl2303_write_room, 1128572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .chars_in_buffer = pl2303_chars_in_buffer, 1129572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .attach = pl2303_startup, 1130572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .shutdown = pl2303_shutdown, 1131572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi}; 11321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1133372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int __init pl2303_init(void) 11341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 11351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 1136372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 11371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_serial_register(&pl2303_device); 11381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 11391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto failed_usb_serial_register; 11401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds retval = usb_register(&pl2303_driver); 11411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (retval) 11421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto failed_usb_register; 114317a882fc0c91477b2582a6dfd4ca93ae7eb58cd3Greg Kroah-Hartman info(DRIVER_DESC); 11441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 11451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfailed_usb_register: 11461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds usb_serial_deregister(&pl2303_device); 11471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsfailed_usb_serial_register: 11481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 11491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1151372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic void __exit pl2303_exit(void) 11521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1153372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_deregister(&pl2303_driver); 1154372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi usb_serial_deregister(&pl2303_device); 11551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 11561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(pl2303_init); 11581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(pl2303_exit); 11591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION(DRIVER_DESC); 11611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 11621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 11631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_param(debug, bool, S_IRUGO | S_IWUSR); 11641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_PARM_DESC(debug, "Debug enabled or not"); 11651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1166