pl2303.c revision c82c6d45a2fc882fedfde517ba86690b2d5ed555
11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Prolific PL2303 USB to serial adaptor driver 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 44d0dce3e0b794942407391c52f8dd2760802f391Greg Kroah-Hartman * Copyright (C) 2001-2007 Greg Kroah-Hartman (greg@kroah.com) 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (C) 2003 IBM Corp. 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Original driver for 2.2.x by anonymous 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 94d0dce3e0b794942407391c52f8dd2760802f391Greg Kroah-Hartman * This program is free software; you can redistribute it and/or 104d0dce3e0b794942407391c52f8dd2760802f391Greg Kroah-Hartman * modify it under the terms of the GNU General Public License version 114d0dce3e0b794942407391c52f8dd2760802f391Greg Kroah-Hartman * 2 as published by the Free Software Foundation. 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 133a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox * See Documentation/usb/usb-serial.txt for more information on using this 143a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox * driver 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> 283a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox#include <linux/uaccess.h> 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/usb.h> 30a969888ce91673c7f4b86520d851a6f0d5a5fa7dGreg Kroah-Hartman#include <linux/usb/serial.h> 31b2d6d98fc71bb94ada78d433f26a93498802d3f8Johan Hovold#include <asm/unaligned.h> 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "pl2303.h" 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 34228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold 35228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold#define PL2303_QUIRK_UART_STATE_IDX0 BIT(0) 3623c6acb9684ac87c2e752f61900c7a1a2dd543acJohan Hovold#define PL2303_QUIRK_LEGACY BIT(1) 37228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold 387d40d7e85a25e01948bcb4dc3eda1355af318337Németh Mártonstatic const struct usb_device_id id_table[] = { 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, 413d861494729c70d9ebeb7d93caa107897925c355Peter Moulder { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_PHAROS) }, 44b483b6aaa56f0db72fa50e85b6499a32d82009bfMax Arnold { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ALDIGA) }, 454be2fa186d54758296d30c565d7b5111dd45b000Steve Murphy { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MMX) }, 46727df3569b358ef440683787c2b9fe8cc55a0954Greg Kroah-Hartman { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_GPRS) }, 4718344a1cd5889d48dac67229fcf024ed300030d5Simone Contini { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) }, 4896a3e79edff6f41b0f115a82f1a39d66218077a7Dario Lombardo { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) }, 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, 508a28dea3accda319d51a1bf4d3e280771d946f78Masakazu Mokuno { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID_UCSGT) }, 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID) }, 5658381719845d9ee19a321c2eb69cfa9b7886be9aWang Jun { USB_DEVICE(ITEGNO_VENDOR_ID, ITEGNO_PRODUCT_ID_2080) }, 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(MA620_VENDOR_ID, MA620_PRODUCT_ID) }, 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(RATOC_VENDOR_ID, RATOC_PRODUCT_ID) }, 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(TRIPP_VENDOR_ID, TRIPP_PRODUCT_ID) }, 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(RADIOSHACK_VENDOR_ID, RADIOSHACK_PRODUCT_ID) }, 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(DCU10_VENDOR_ID, DCU10_PRODUCT_ID) }, 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(SITECOM_VENDOR_ID, SITECOM_PRODUCT_ID) }, 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(ALCATEL_VENDOR_ID, ALCATEL_PRODUCT_ID) }, 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_PRODUCT_ID) }, 65228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_SX1), 66228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, 67228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X65), 68228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, 69228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75), 70228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, 71e7beb667842ad0f6ec95a22e7c88e71dfbd60649Andreas Loibl { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, 72912299f6f0587bb6c221705ed9949709b36b3c56Alan Cox { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ 73acbb36f116243bed515357264ecbb6ff9c6d2a5bPeter Favrholdt { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, 74c6c27721a42b991965bb792d5c196b8331d008d5Christian Lindner { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, 75c6c27721a42b991965bb792d5c196b8331d008d5Christian Lindner { USB_DEVICE(CA_42_CA42_VENDOR_ID, CA_42_CA42_PRODUCT_ID) }, 766cceb05f8df6e28ab90f44bdeba50d33928cdee5Denis MONTERRAT { USB_DEVICE(SAGEM_VENDOR_ID, SAGEM_PRODUCT_ID) }, 77c6c27721a42b991965bb792d5c196b8331d008d5Christian Lindner { USB_DEVICE(LEADTEK_VENDOR_ID, LEADTEK_9531_PRODUCT_ID) }, 78491b04ce1c9adfa0cd73f095086f3c37da81b667Dick Streefland { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, 793b92847425a98d26ad9d2b8682d3ce6020c90752Matthew Meno { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, 80b7aa94b682dc6b6dcdc01d36f8e65cef5aae81e2Kim Oldfield { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, 818fd801339350b63cbb90730ff8b2be349fb3dc67Johannes Steingraeber { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, 822d94b981c7fcb0fba4aa3442cd180066dbedbbc8YOSHIFUJI Hideaki { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, 839e3285dba5cac12d656da66fd7d420ff1bc0ecc0Magnus Damm { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, 84cc311ee7d29d96f0bf15599f4456012d6f5ea23cDamien Stuart { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, 857c99200142c04d0f1ed3f048014591f841efdaedMatthew Arnold { USB_DEVICE(SUPERIAL_VENDOR_ID, SUPERIAL_PRODUCT_ID) }, 86af4b8514aafd53d97b05a0a30b7d4cfd2cbb7b81Mike Provencher { USB_DEVICE(HP_VENDOR_ID, HP_LD220_PRODUCT_ID) }, 878540d66615c39010168ab97eaafb476ec2851298Gianpaolo Cugola { USB_DEVICE(CRESSI_VENDOR_ID, CRESSI_EDY_PRODUCT_ID) }, 88f36ecd5de93e4c85a9e3d25100c6e233155b12e5Jef Driesen { USB_DEVICE(ZEAGLE_VENDOR_ID, ZEAGLE_N2ITION3_PRODUCT_ID) }, 8949276560c9004fce24c42e3c0ad75f34d956fc63Khanh-Dang Nguyen Thu Lam { USB_DEVICE(SONY_VENDOR_ID, SONY_QN3USB_PRODUCT_ID) }, 9035904e6b5106fda51b04c8b8080c04466865415fPawel Ludwikow { USB_DEVICE(SANWA_VENDOR_ID, SANWA_PRODUCT_ID) }, 919a61d72602771906e11a5944e8571f8006387b39Manuel Jander { USB_DEVICE(ADLINK_VENDOR_ID, ADLINK_ND6530_PRODUCT_ID) }, 92598f0b703506da841d3459dc0c48506be14d1778Eric Benoit { USB_DEVICE(SMART_VENDOR_ID, SMART_PRODUCT_ID) }, 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds { } /* Terminating entry */ 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 96372db8a780f63368c6960a167b7a19aad776d704Thiago GalesiMODULE_DEVICE_TABLE(usb, id_table); 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_LINE_REQUEST_TYPE 0x21 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_LINE_REQUEST 0x20 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_CONTROL_REQUEST_TYPE 0x21 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define SET_CONTROL_REQUEST 0x22 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CONTROL_DTR 0x01 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define CONTROL_RTS 0x02 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_REQUEST_TYPE 0x21 1073a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox#define BREAK_REQUEST 0x23 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_ON 0xffff 1091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define BREAK_OFF 0x0000 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GET_LINE_REQUEST_TYPE 0xa1 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define GET_LINE_REQUEST 0x21 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_WRITE_REQUEST_TYPE 0x40 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_WRITE_REQUEST 0x01 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_READ_REQUEST_TYPE 0xc0 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define VENDOR_READ_REQUEST 0x01 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 120228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold#define UART_STATE_INDEX 8 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_STATE_TRANSIENT_MASK 0x74 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_DCD 0x01 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_DSR 0x02 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_BREAK_ERROR 0x04 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_RING 0x08 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_FRAME_ERROR 0x10 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_PARITY_ERROR 0x20 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_OVERRUN_ERROR 0x40 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define UART_CTS 0x80 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsenum pl2303_type { 1337f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold TYPE_01, /* Type 0 and 1 (difference unknown) */ 1347f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold TYPE_HX, /* HX version of the pl2303 chip */ 135359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold TYPE_COUNT 136359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold}; 137359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold 138359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovoldstruct pl2303_type_data { 139359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold speed_t max_baud_rate; 140359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold unsigned long quirks; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1438bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovoldstruct pl2303_serial_private { 144359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold struct pl2303_type_data *type; 145228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold unsigned long quirks; 1468bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold}; 1478bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstruct pl2303_private { 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spinlock_t lock; 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 line_control; 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 line_status; 152623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold 153623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold u8 line_settings[7]; 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 156359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovoldstatic struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = { 157359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold [TYPE_01] = { 158359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold .max_baud_rate = 1228800, 159359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold .quirks = PL2303_QUIRK_LEGACY, 160359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold }, 161359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold}; 162359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold 163362eb02603be7bb835c47f2cf585954a5080449dJohan Hovoldstatic int pl2303_vendor_read(struct usb_serial *serial, u16 value, 164362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold unsigned char buf[1]) 165eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp{ 166362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold struct device *dev = &serial->interface->dev; 167ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold int res; 168ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 169ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold res = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), 170eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp VENDOR_READ_REQUEST, VENDOR_READ_REQUEST_TYPE, 171362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold value, 0, buf, 1, 100); 172362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold if (res != 1) { 173362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold dev_err(dev, "%s - failed to read [%04x]: %d\n", __func__, 174362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold value, res); 175362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold if (res >= 0) 176362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold res = -EIO; 177362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold 178362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold return res; 179362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold } 180ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 181362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, buf[0]); 182ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 183362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold return 0; 184eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp} 185eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp 186362eb02603be7bb835c47f2cf585954a5080449dJohan Hovoldstatic int pl2303_vendor_write(struct usb_serial *serial, u16 value, u16 index) 187eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp{ 188362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold struct device *dev = &serial->interface->dev; 189ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold int res; 190ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 191362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold dev_dbg(dev, "%s - [%04x] = %02x\n", __func__, value, index); 192362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold 193ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 194eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp VENDOR_WRITE_REQUEST, VENDOR_WRITE_REQUEST_TYPE, 195eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp value, index, NULL, 0, 100); 196362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold if (res) { 197362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold dev_err(dev, "%s - failed to write [%04x]: %d\n", __func__, 198362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold value, res); 199362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold return res; 200362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold } 201ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 202362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold return 0; 203eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp} 204eb44da0b3aa0105cb38d81c5747a8feae64834beSarah Sharp 205228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovoldstatic int pl2303_probe(struct usb_serial *serial, 206228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold const struct usb_device_id *id) 207228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold{ 208228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold usb_set_serial_data(serial, (void *)id->driver_info); 209228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold 210228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold return 0; 211228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold} 212228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold 213372db8a780f63368c6960a167b7a19aad776d704Thiago Galesistatic int pl2303_startup(struct usb_serial *serial) 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 2158bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold struct pl2303_serial_private *spriv; 2167f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold enum pl2303_type type = TYPE_01; 2173e152505a57db6622deb1322c22551c046e33d16Sarah Sharp unsigned char *buf; 2188bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 2198bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); 2208bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold if (!spriv) 2218bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold return -ENOMEM; 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 223362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold buf = kmalloc(1, GFP_KERNEL); 2248bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold if (!buf) { 2258bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold kfree(spriv); 2263e152505a57db6622deb1322c22551c046e33d16Sarah Sharp return -ENOMEM; 2278bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold } 2283e152505a57db6622deb1322c22551c046e33d16Sarah Sharp 229b52e111363e366202386f3e67f71681dbbb8e5d9Greg Kroah-Hartman if (serial->dev->descriptor.bDeviceClass == 0x02) 2307f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold type = TYPE_01; /* type 0 */ 231b52e111363e366202386f3e67f71681dbbb8e5d9Greg Kroah-Hartman else if (serial->dev->descriptor.bMaxPacketSize0 == 0x40) 2327f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold type = TYPE_HX; 233281393ad0bcfc309434d2bff38abc15805c2cbc4Greg Kroah-Hartman else if (serial->dev->descriptor.bDeviceClass == 0x00) 2347f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold type = TYPE_01; /* type 1 */ 235281393ad0bcfc309434d2bff38abc15805c2cbc4Greg Kroah-Hartman else if (serial->dev->descriptor.bDeviceClass == 0xFF) 2367f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold type = TYPE_01; /* type 1 */ 237b52e111363e366202386f3e67f71681dbbb8e5d9Greg Kroah-Hartman dev_dbg(&serial->interface->dev, "device type: %d\n", type); 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 239359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold spriv->type = &pl2303_type_data[type]; 240228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold spriv->quirks = (unsigned long)usb_get_serial_data(serial); 241359defdaa46c6ecf6a29600f3d57c663c9c35fd2Johan Hovold spriv->quirks |= spriv->type->quirks; 242228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold 2438bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold usb_set_serial_data(serial, spriv); 2443e152505a57db6622deb1322c22551c046e33d16Sarah Sharp 245362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_read(serial, 0x8484, buf); 246362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_write(serial, 0x0404, 0); 247362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_read(serial, 0x8484, buf); 248362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_read(serial, 0x8383, buf); 249362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_read(serial, 0x8484, buf); 250362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_write(serial, 0x0404, 1); 251362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_read(serial, 0x8484, buf); 252362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_read(serial, 0x8383, buf); 253362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_write(serial, 0, 1); 254362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_write(serial, 1, 0); 25523c6acb9684ac87c2e752f61900c7a1a2dd543acJohan Hovold if (spriv->quirks & PL2303_QUIRK_LEGACY) 256362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_write(serial, 2, 0x24); 2577f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold else 2587f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold pl2303_vendor_write(serial, 2, 0x44); 2593e152505a57db6622deb1322c22551c046e33d16Sarah Sharp 2603e152505a57db6622deb1322c22551c046e33d16Sarah Sharp kfree(buf); 261ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2638bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold} 2641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2658bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovoldstatic void pl2303_release(struct usb_serial *serial) 2668bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold{ 267ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold struct pl2303_serial_private *spriv = usb_get_serial_data(serial); 2688bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 2698bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold kfree(spriv); 2708bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold} 2718bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 2728bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovoldstatic int pl2303_port_probe(struct usb_serial_port *port) 2738bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold{ 2748bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold struct pl2303_private *priv; 2758bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 2768bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold priv = kzalloc(sizeof(*priv), GFP_KERNEL); 2778bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold if (!priv) 2788bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold return -ENOMEM; 2798bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 2808bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold spin_lock_init(&priv->lock); 2818bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 2828bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold usb_set_serial_port_data(port, priv); 2838bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 284d7be62211125c85fa1dd796e92aadce84961a502Johan Hovold port->port.drain_delay = 256; 285d7be62211125c85fa1dd796e92aadce84961a502Johan Hovold 2868bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold return 0; 2878bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold} 2888bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 2898bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovoldstatic int pl2303_port_remove(struct usb_serial_port *port) 2908bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold{ 291ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold struct pl2303_private *priv = usb_get_serial_port_data(port); 2928bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 2938bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold kfree(priv); 2948bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold 2958bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold return 0; 2961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 298f45d0a5aa593cdf48a37489fc61c145e16964288Johan Hovoldstatic int pl2303_set_control_lines(struct usb_serial_port *port, u8 value) 2991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 300f45d0a5aa593cdf48a37489fc61c145e16964288Johan Hovold struct usb_device *dev = port->serial->dev; 3011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int retval; 3023a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox 303a6ec8245bf09fd51a0561ff372a12473b48d269bJohan Hovold dev_dbg(&port->dev, "%s - %02x\n", __func__, value); 304a6ec8245bf09fd51a0561ff372a12473b48d269bJohan Hovold 305372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi retval = usb_control_msg(dev, usb_sndctrlpipe(dev, 0), 306372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi SET_CONTROL_REQUEST, SET_CONTROL_REQUEST_TYPE, 307372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi value, 0, NULL, 0, 100); 308a6ec8245bf09fd51a0561ff372a12473b48d269bJohan Hovold if (retval) 309a6ec8245bf09fd51a0561ff372a12473b48d269bJohan Hovold dev_err(&port->dev, "%s - failed: %d\n", __func__, retval); 310ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 3111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return retval; 3121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 3131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 31459afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold/* 31559afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold * Returns the nearest supported baud rate. 31659afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold */ 31759afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovoldstatic speed_t pl2303_get_supported_baud_rate(speed_t baud) 3181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 31959afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold static const speed_t baud_sup[] = { 32059afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold 75, 150, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600, 32159afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold 14400, 19200, 28800, 38400, 57600, 115200, 230400, 460800, 32259afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold 500000, 614400, 921600, 1228800, 2457600, 3000000, 6000000 32359afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold }; 3241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 32559afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold unsigned i; 326692ed4ddf0010dd643d38d6ef1a15bf64a7fbc6dGreg Kroah-Hartman 3277e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) { 3287e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman if (baud_sup[i] > baud) 3297e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman break; 3307e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman } 331692ed4ddf0010dd643d38d6ef1a15bf64a7fbc6dGreg Kroah-Hartman 3327e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman if (i == ARRAY_SIZE(baud_sup)) 3337e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman baud = baud_sup[i - 1]; 3347e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1])) 3357e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman baud = baud_sup[i - 1]; 3367e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman else 3377e12a6fcbf266eb0d5b19761f91b2964ad18e371Greg Kroah-Hartman baud = baud_sup[i]; 338692ed4ddf0010dd643d38d6ef1a15bf64a7fbc6dGreg Kroah-Hartman 33959afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold return baud; 34059afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold} 34159afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold 342c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovoldstatic speed_t pl2303_encode_baud_rate_divisor(unsigned char buf[4], 343c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold speed_t baud) 344c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold{ 345c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold unsigned int tmp; 346c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold 347c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold /* 348c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold * Apparently the formula is: 349c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold * baudrate = 12M * 32 / (2^buf[1]) / buf[0] 350c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold */ 351c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold tmp = 12000000 * 32 / baud; 352c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold buf[3] = 0x80; 353c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold buf[2] = 0; 354c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold buf[1] = (tmp >= 256); 355c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold while (tmp >= 256) { 356c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold tmp >>= 2; 357c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold buf[1] <<= 1; 358c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold } 359c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold buf[0] = tmp; 360c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold 361c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold return baud; 362c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold} 363c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold 36459afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovoldstatic void pl2303_encode_baud_rate(struct tty_struct *tty, 36559afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold struct usb_serial_port *port, 36659afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold u8 buf[4]) 36759afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold{ 36859afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold struct usb_serial *serial = port->serial; 36959afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold struct pl2303_serial_private *spriv = usb_get_serial_data(serial); 37059afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold speed_t baud; 37159afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold 37259afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold baud = tty_get_baud_rate(tty); 37359afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold dev_dbg(&port->dev, "baud requested = %u\n", baud); 37459afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold if (!baud) 37559afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold return; 376871996ede12306cd1d75ed8135bed6f1fcbcd0e6Johan Hovold 377871996ede12306cd1d75ed8135bed6f1fcbcd0e6Johan Hovold if (spriv->type->max_baud_rate) 378871996ede12306cd1d75ed8135bed6f1fcbcd0e6Johan Hovold baud = min_t(speed_t, baud, spriv->type->max_baud_rate); 37959afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold /* 38059afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold * Set baud rate to nearest supported value. 38159afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold * 38259afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold * NOTE: If unsupported values are set directly, the PL2303 seems to 38359afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold * use 9600 baud. 38459afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold */ 38559afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold baud = pl2303_get_supported_baud_rate(baud); 38659afe10e8dd33d26f8c2ae7572f9023044e71babJohan Hovold 387c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold if (baud <= 115200) 388692ed4ddf0010dd643d38d6ef1a15bf64a7fbc6dGreg Kroah-Hartman put_unaligned_le32(baud, buf); 389c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold else 390c82c6d45a2fc882fedfde517ba86690b2d5ed555Johan Hovold baud = pl2303_encode_baud_rate_divisor(buf, baud); 391692ed4ddf0010dd643d38d6ef1a15bf64a7fbc6dGreg Kroah-Hartman 39215e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold /* Save resulting baud rate */ 393b2d6d98fc71bb94ada78d433f26a93498802d3f8Johan Hovold tty_encode_baud_rate(tty, baud, baud); 394f84ee3b2f5e5e39041c39268a9eab5046a050d44Johan Hovold dev_dbg(&port->dev, "baud set = %u\n", baud); 39515e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold} 39615e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold 397383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovoldstatic int pl2303_get_line_request(struct usb_serial_port *port, 398383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold unsigned char buf[7]) 399383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold{ 400383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold struct usb_device *udev = port->serial->dev; 401383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold int ret; 402383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 403383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 404383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, 405383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 0, 0, buf, 7, 100); 406383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold if (ret != 7) { 407383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold dev_err(&port->dev, "%s - failed: %d\n", __func__, ret); 408383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 409383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold if (ret > 0) 410383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold ret = -EIO; 411383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 412383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold return ret; 413383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold } 414383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 415383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf); 416383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 417383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold return 0; 418383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold} 419383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 420383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovoldstatic int pl2303_set_line_request(struct usb_serial_port *port, 421383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold unsigned char buf[7]) 422383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold{ 423383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold struct usb_device *udev = port->serial->dev; 424383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold int ret; 425383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 426383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 427383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold SET_LINE_REQUEST, SET_LINE_REQUEST_TYPE, 428383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 0, 0, buf, 7, 100); 429383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold if (ret != 7) { 430383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold dev_err(&port->dev, "%s - failed: %d\n", __func__, ret); 431383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 432383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold if (ret > 0) 433383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold ret = -EIO; 434383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 435383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold return ret; 436383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold } 437383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 438383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold dev_dbg(&port->dev, "%s - %7ph\n", __func__, buf); 439383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 440383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold return 0; 441383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold} 442383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold 44315e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovoldstatic void pl2303_set_termios(struct tty_struct *tty, 44415e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold struct usb_serial_port *port, struct ktermios *old_termios) 44515e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold{ 44615e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold struct usb_serial *serial = port->serial; 44715e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold struct pl2303_serial_private *spriv = usb_get_serial_data(serial); 44815e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold struct pl2303_private *priv = usb_get_serial_port_data(port); 44915e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold unsigned long flags; 45015e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold unsigned char *buf; 451383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold int ret; 45215e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold u8 control; 45315e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold 45415e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) 45515e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold return; 45615e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold 45715e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold buf = kzalloc(7, GFP_KERNEL); 45815e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold if (!buf) { 45915e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold /* Report back no change occurred */ 46015e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold if (old_termios) 46115e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold tty->termios = *old_termios; 46215e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold return; 46315e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold } 46415e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold 465383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold pl2303_get_line_request(port, buf); 46615e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold 467a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner switch (C_CSIZE(tty)) { 468a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner case CS5: 469a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner buf[6] = 5; 470a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner break; 471a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner case CS6: 472a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner buf[6] = 6; 473a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner break; 474a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner case CS7: 475a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner buf[6] = 7; 476a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner break; 477a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner default: 478a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner case CS8: 479a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner buf[6] = 8; 48015e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold } 481a313249937820f8b1996133fc285efbd6aad2c5bColin Leitner dev_dbg(&port->dev, "data bits = %d\n", buf[6]); 48215e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold 483692ed4ddf0010dd643d38d6ef1a15bf64a7fbc6dGreg Kroah-Hartman /* For reference buf[0]:buf[3] baud rate value */ 48479816824c1ae73542d9523283ce353142b67563eJohan Hovold pl2303_encode_baud_rate(tty, port, &buf[0]); 48515e7cead1ed89d445cf86c75a72368e98a7a9039Johan Hovold 4861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[4]=0 is 1 stop bits */ 4871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[4]=1 is 1.5 stop bits */ 4881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[4]=2 is 2 stop bits */ 48987265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold if (C_CSTOPB(tty)) { 49087265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold /* 49187265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold * NOTE: Comply with "real" UARTs / RS232: 49229cf1b72f34519413b3fafbccc9ac776eb948edeFrank Schaefer * use 1.5 instead of 2 stop bits with 5 data bits 49329cf1b72f34519413b3fafbccc9ac776eb948edeFrank Schaefer */ 49487265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold if (C_CSIZE(tty) == CS5) { 49529cf1b72f34519413b3fafbccc9ac776eb948edeFrank Schaefer buf[4] = 1; 496d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "stop bits = 1.5\n"); 49729cf1b72f34519413b3fafbccc9ac776eb948edeFrank Schaefer } else { 49829cf1b72f34519413b3fafbccc9ac776eb948edeFrank Schaefer buf[4] = 2; 499d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "stop bits = 2\n"); 50029cf1b72f34519413b3fafbccc9ac776eb948edeFrank Schaefer } 5011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[4] = 0; 503d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "stop bits = 1\n"); 5041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 50687265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold if (C_PARENB(tty)) { 5071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=0 is none parity */ 5081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=1 is odd parity */ 5091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=2 is even parity */ 5101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=3 is mark parity */ 5111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* For reference buf[5]=4 is space parity */ 51287265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold if (C_PARODD(tty)) { 51387265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold if (tty->termios.c_cflag & CMSPAR) { 5146dd81b45fd7628f3eb308f387aee696366718f25Frank Schaefer buf[5] = 3; 515d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "parity = mark\n"); 5166dd81b45fd7628f3eb308f387aee696366718f25Frank Schaefer } else { 5176dd81b45fd7628f3eb308f387aee696366718f25Frank Schaefer buf[5] = 1; 518d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "parity = odd\n"); 5196dd81b45fd7628f3eb308f387aee696366718f25Frank Schaefer } 5201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 52187265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold if (tty->termios.c_cflag & CMSPAR) { 5226dd81b45fd7628f3eb308f387aee696366718f25Frank Schaefer buf[5] = 4; 523d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "parity = space\n"); 5246dd81b45fd7628f3eb308f387aee696366718f25Frank Schaefer } else { 5256dd81b45fd7628f3eb308f387aee696366718f25Frank Schaefer buf[5] = 2; 526d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "parity = even\n"); 5276dd81b45fd7628f3eb308f387aee696366718f25Frank Schaefer } 5281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds buf[5] = 0; 531d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "parity = none\n"); 5321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 5331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 534623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold /* 535623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * Some PL2303 are known to lose bytes if you change serial settings 536623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * even to the same values as before. Thus we actually need to filter 537623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * in this specific case. 538623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * 539623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * Note that the tty_termios_hw_change check above is not sufficient 540623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * as a previously requested baud rate may differ from the one 541623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * actually used (and stored in old_termios). 542623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * 543623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * NOTE: No additional locking needed for line_settings as it is 544623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold * only used in set_termios, which is serialised against itself. 545623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold */ 546623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold if (!old_termios || memcmp(buf, priv->line_settings, 7)) { 547383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold ret = pl2303_set_line_request(port, buf); 548383d19c58729e34b3b94e47da20aa7fe4970a577Johan Hovold if (!ret) 549623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold memcpy(priv->line_settings, buf, 7); 550623c8263376c0b8a4b0c220232e7313d762cd0ccJohan Hovold } 5511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 5521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* change control lines if we are switching to or from B0 */ 5531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_lock_irqsave(&priv->lock, flags); 5541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control = priv->line_control; 55587265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold if (C_BAUD(tty) == B0) 5561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); 5572d8f4447b58bba5f8cb895c07690434c02307eafJohan Hovold else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) 5581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control |= (CONTROL_DTR | CONTROL_RTS); 5591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (control != priv->line_control) { 5601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control = priv->line_control; 5611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 562f45d0a5aa593cdf48a37489fc61c145e16964288Johan Hovold pl2303_set_control_lines(port, control); 5631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } else { 5641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds spin_unlock_irqrestore(&priv->lock, flags); 5651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 566372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 56787265b4514f5a0b79efdccdcb1c6331285652640Johan Hovold if (C_CRTSCTS(tty)) { 56823c6acb9684ac87c2e752f61900c7a1a2dd543acJohan Hovold if (spriv->quirks & PL2303_QUIRK_LEGACY) 569362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_write(serial, 0x0, 0x41); 5707f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold else 5717f966ac7a939633ff6fa8cec58982676c243b4f8Johan Hovold pl2303_vendor_write(serial, 0x0, 0x61); 572715f9527c1c1edd1a9c7a55ab4535211279c9374t.sefzick } else { 573362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_write(serial, 0x0, 0x0); 5741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 575572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 576572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi kfree(buf); 577572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi} 578572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi 579335f8514f200e63d689113d29cb7253a5c282967Alan Coxstatic void pl2303_dtr_rts(struct usb_serial_port *port, int on) 580335f8514f200e63d689113d29cb7253a5c282967Alan Cox{ 581335f8514f200e63d689113d29cb7253a5c282967Alan Cox struct pl2303_private *priv = usb_get_serial_port_data(port); 582335f8514f200e63d689113d29cb7253a5c282967Alan Cox unsigned long flags; 583335f8514f200e63d689113d29cb7253a5c282967Alan Cox u8 control; 584335f8514f200e63d689113d29cb7253a5c282967Alan Cox 585335f8514f200e63d689113d29cb7253a5c282967Alan Cox spin_lock_irqsave(&priv->lock, flags); 586335f8514f200e63d689113d29cb7253a5c282967Alan Cox if (on) 587335f8514f200e63d689113d29cb7253a5c282967Alan Cox priv->line_control |= (CONTROL_DTR | CONTROL_RTS); 588335f8514f200e63d689113d29cb7253a5c282967Alan Cox else 589335f8514f200e63d689113d29cb7253a5c282967Alan Cox priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); 590335f8514f200e63d689113d29cb7253a5c282967Alan Cox control = priv->line_control; 591335f8514f200e63d689113d29cb7253a5c282967Alan Cox spin_unlock_irqrestore(&priv->lock, flags); 592ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 593f45d0a5aa593cdf48a37489fc61c145e16964288Johan Hovold pl2303_set_control_lines(port, control); 594335f8514f200e63d689113d29cb7253a5c282967Alan Cox} 595335f8514f200e63d689113d29cb7253a5c282967Alan Cox 596335f8514f200e63d689113d29cb7253a5c282967Alan Coxstatic void pl2303_close(struct usb_serial_port *port) 597572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi{ 5988b0127b2082601e40295045414a8318f2c8ee5a0Johan Hovold usb_serial_generic_close(port); 599572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi usb_kill_urb(port->interrupt_in_urb); 6001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 602a509a7e478e4766114d69f12d19d644ac63e9765Alan Coxstatic int pl2303_open(struct tty_struct *tty, struct usb_serial_port *port) 6031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 6041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 6058bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold struct pl2303_serial_private *spriv = usb_get_serial_data(serial); 6061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 6071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 60823c6acb9684ac87c2e752f61900c7a1a2dd543acJohan Hovold if (spriv->quirks & PL2303_QUIRK_LEGACY) { 6091694899fd1af43636351aac97f415fd3c9cefb1dDariusz M usb_clear_halt(serial->dev, port->write_urb->pipe); 6101694899fd1af43636351aac97f415fd3c9cefb1dDariusz M usb_clear_halt(serial->dev, port->read_urb->pipe); 6113e152505a57db6622deb1322c22551c046e33d16Sarah Sharp } else { 6121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* reset upstream data pipes */ 613362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_write(serial, 8, 0); 614362eb02603be7bb835c47f2cf585954a5080449dJohan Hovold pl2303_vendor_write(serial, 9, 0); 6151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 6161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Setup termios */ 61895da310e66ee8090119596c70ca8432e57f9a97fAlan Cox if (tty) 6192d8f4447b58bba5f8cb895c07690434c02307eafJohan Hovold pl2303_set_termios(tty, port, NULL); 6201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 621372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); 6221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) { 623ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold dev_err(&port->dev, "failed to submit interrupt urb: %d\n", 624ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold result); 625db6e9186c90188edea20aaa5161ea073440cc2a1Johan Hovold return result; 6261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 627d4691c3fa3d371835b1eacb39066ab113c4b9d8cJohan Hovold 628f5230a53c1d551811b077ccad219105786da1becJohan Hovold result = usb_serial_generic_open(tty, port); 629d4691c3fa3d371835b1eacb39066ab113c4b9d8cJohan Hovold if (result) { 630d4691c3fa3d371835b1eacb39066ab113c4b9d8cJohan Hovold usb_kill_urb(port->interrupt_in_urb); 631d4691c3fa3d371835b1eacb39066ab113c4b9d8cJohan Hovold return result; 632d4691c3fa3d371835b1eacb39066ab113c4b9d8cJohan Hovold } 633d4691c3fa3d371835b1eacb39066ab113c4b9d8cJohan Hovold 6341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 6351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 63720b9d17715017ae4dd4ec87fabc36d33b9de708eAlan Coxstatic int pl2303_tiocmset(struct tty_struct *tty, 638372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi unsigned int set, unsigned int clear) 6391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 64095da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 6411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 6421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 control; 6446f1efd6c5aa63ddcfe1ffc60ade716f5421766f4Johan Hovold int ret; 6456fdd8e8e33730a2abc886113bd0b6c4343f63cc9Flavio Leitner 646372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 6471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_RTS) 6481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control |= CONTROL_RTS; 6491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (set & TIOCM_DTR) 6501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control |= CONTROL_DTR; 6511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_RTS) 6521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control &= ~CONTROL_RTS; 6531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (clear & TIOCM_DTR) 6541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds priv->line_control &= ~CONTROL_DTR; 6551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds control = priv->line_control; 656372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 6571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6585ddbb26b8b571231cace9f013b2d0ae66229b316Johan Hovold ret = pl2303_set_control_lines(port, control); 6595ddbb26b8b571231cace9f013b2d0ae66229b316Johan Hovold if (ret) 6605ddbb26b8b571231cace9f013b2d0ae66229b316Johan Hovold return usb_translate_errors(ret); 6616f1efd6c5aa63ddcfe1ffc60ade716f5421766f4Johan Hovold 6625ddbb26b8b571231cace9f013b2d0ae66229b316Johan Hovold return 0; 6631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 66560b33c133ca0b7c0b6072c87234b63fee6e80558Alan Coxstatic int pl2303_tiocmget(struct tty_struct *tty) 6661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 66795da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 6681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 6691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 6701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int mcr; 6711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int status; 6721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int result; 6731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 674372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 6751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mcr = priv->line_control; 6761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = priv->line_status; 677372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 6781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds result = ((mcr & CONTROL_DTR) ? TIOCM_DTR : 0) 6801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((mcr & CONTROL_RTS) ? TIOCM_RTS : 0) 6811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_CTS) ? TIOCM_CTS : 0) 6821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_DSR) ? TIOCM_DSR : 0) 6831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_RING) ? TIOCM_RI : 0) 6841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds | ((status & UART_DCD) ? TIOCM_CD : 0); 6851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 686d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "%s - result = %x\n", __func__, result); 6871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 6881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return result; 6891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 6901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 691335f8514f200e63d689113d29cb7253a5c282967Alan Coxstatic int pl2303_carrier_raised(struct usb_serial_port *port) 692335f8514f200e63d689113d29cb7253a5c282967Alan Cox{ 693335f8514f200e63d689113d29cb7253a5c282967Alan Cox struct pl2303_private *priv = usb_get_serial_port_data(port); 694ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 695335f8514f200e63d689113d29cb7253a5c282967Alan Cox if (priv->line_status & UART_DCD) 696335f8514f200e63d689113d29cb7253a5c282967Alan Cox return 1; 697ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 698335f8514f200e63d689113d29cb7253a5c282967Alan Cox return 0; 699335f8514f200e63d689113d29cb7253a5c282967Alan Cox} 700335f8514f200e63d689113d29cb7253a5c282967Alan Cox 701824d11bef5540062d17380c65ee52d4b2948ca84Johan Hovoldstatic int pl2303_tiocmiwait(struct tty_struct *tty, unsigned long arg) 7021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 703824d11bef5540062d17380c65ee52d4b2948ca84Johan Hovold struct usb_serial_port *port = tty->driver_data; 7041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct pl2303_private *priv = usb_get_serial_port_data(port); 7051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned long flags; 7061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int prevstatus; 7071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int status; 7081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned int changed; 7091da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 710372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 7111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prevstatus = priv->line_status; 712372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 7131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds while (1) { 7156d0cad657a133818038683120fff9c5c5f8dc751Johan Hovold interruptible_sleep_on(&port->port.delta_msr_wait); 7161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* see if a signal did it */ 7171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (signal_pending(current)) 7181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ERESTARTSYS; 719372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 72040509ca982c00c4b70fc00be887509feca0bff15Johan Hovold if (port->serial->disconnected) 72140509ca982c00c4b70fc00be887509feca0bff15Johan Hovold return -EIO; 72240509ca982c00c4b70fc00be887509feca0bff15Johan Hovold 723372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_lock_irqsave(&priv->lock, flags); 7241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds status = priv->line_status; 725372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi spin_unlock_irqrestore(&priv->lock, flags); 726372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 7273a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox changed = prevstatus ^ status; 728372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 7291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (((arg & TIOCM_RNG) && (changed & UART_RING)) || 7301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((arg & TIOCM_DSR) && (changed & UART_DSR)) || 7311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ((arg & TIOCM_CD) && (changed & UART_DCD)) || 7323a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox ((arg & TIOCM_CTS) && (changed & UART_CTS))) { 7331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds prevstatus = status; 7361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 7371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* NOTREACHED */ 7381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 7391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 74100a0d0d65b61241a718d0aee96f46b9a2d93bf26Alan Coxstatic int pl2303_ioctl(struct tty_struct *tty, 742372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi unsigned int cmd, unsigned long arg) 7431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 74467b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas struct serial_struct ser; 74595da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 746d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman 7471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (cmd) { 74867b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas case TIOCGSERIAL: 74967b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas memset(&ser, 0, sizeof ser); 75067b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas ser.type = PORT_16654; 751e5b1e2062e0535e8ffef79bb34d857e21380d101Greg Kroah-Hartman ser.line = port->minor; 7521143832eca8f1d64da7d85642c956ae9d25c69e1Greg Kroah-Hartman ser.port = port->port_number; 75367b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas ser.baud_base = 460800; 75467b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas 75567b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas if (copy_to_user((void __user *)arg, &ser, sizeof ser)) 75667b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas return -EFAULT; 75767b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas 75867b9946dd07eeef8188e4cab816d2c370bcaa7b2John Tsiombikas return 0; 7593a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox default: 7603a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox break; 7611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 762ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 7631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -ENOIOCTLCMD; 7641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 76695da310e66ee8090119596c70ca8432e57f9a97fAlan Coxstatic void pl2303_break_ctl(struct tty_struct *tty, int break_state) 7671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 76895da310e66ee8090119596c70ca8432e57f9a97fAlan Cox struct usb_serial_port *port = tty->driver_data; 7691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct usb_serial *serial = port->serial; 7701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u16 state; 7711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds int result; 7721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 7731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (break_state == 0) 7741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds state = BREAK_OFF; 7751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 7761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds state = BREAK_ON; 777ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 778d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "%s - turning break %s\n", __func__, 7793a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox state == BREAK_OFF ? "off" : "on"); 7801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 781372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), 782372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi BREAK_REQUEST, BREAK_REQUEST_TYPE, state, 783372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 0, NULL, 0, 100); 7841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (result) 785d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_err(&port->dev, "error sending break = %d\n", result); 7861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 7871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 78897bb13ec5bc156352cca8af90080597e04299a73Flavio Leitnerstatic void pl2303_update_line_status(struct usb_serial_port *port, 78997bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned char *data, 79097bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned int actual_length) 79197bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner{ 792228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold struct usb_serial *serial = port->serial; 793228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold struct pl2303_serial_private *spriv = usb_get_serial_data(serial); 79497bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner struct pl2303_private *priv = usb_get_serial_port_data(port); 795d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek struct tty_struct *tty; 79697bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned long flags; 797228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold unsigned int status_idx = UART_STATE_INDEX; 798d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek u8 prev_line_status; 79997bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 800228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold if (spriv->quirks & PL2303_QUIRK_UART_STATE_IDX0) 801228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold status_idx = 0; 80297bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 803228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold if (actual_length < status_idx + 1) 804a009b75aa0ed55f0bc473c8a3b3e872cbca807ecLuiz Fernando N. Capitulino return; 80597bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner 8063a0f43e9deffd9619ac34e3b6b9ba7089aa1e511Alan Cox /* Save off the uart status for others to look at */ 80797bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner spin_lock_irqsave(&priv->lock, flags); 808d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek prev_line_status = priv->line_status; 80997bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner priv->line_status = data[status_idx]; 81097bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner spin_unlock_irqrestore(&priv->lock, flags); 811ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 812430eb0d27c1b36c5191c16b2472b26137673a8d4Jason Wessel if (priv->line_status & UART_BREAK_ERROR) 813430eb0d27c1b36c5191c16b2472b26137673a8d4Jason Wessel usb_serial_handle_break(port); 814ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold 8156d0cad657a133818038683120fff9c5c5f8dc751Johan Hovold wake_up_interruptible(&port->port.delta_msr_wait); 816d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek 817d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek tty = tty_port_tty_get(&port->port); 818d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek if (!tty) 819d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek return; 820d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek if ((priv->line_status ^ prev_line_status) & UART_DCD) 821d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek usb_serial_handle_dcd_change(port, tty, 822d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek priv->line_status & UART_DCD); 823d14fc1a74e846d7851f24fc9519fe87dc12a1231Libor Pechacek tty_kref_put(tty); 82497bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner} 8251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8267d12e780e003f93433d49ce78cfedf4b4c52adc5David Howellsstatic void pl2303_read_int_callback(struct urb *urb) 8271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 828cdc97792289179974af6dda781c855696358d307Ming Lei struct usb_serial_port *port = urb->context; 8291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds unsigned char *data = urb->transfer_buffer; 83097bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner unsigned int actual_length = urb->actual_length; 831461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman int status = urb->status; 832461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman int retval; 8331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 834461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman switch (status) { 8351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 0: 8361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* success */ 8371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 8381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ECONNRESET: 8391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ENOENT: 8401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case -ESHUTDOWN: 8411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* this urb is terminated, clean up */ 842d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", 843d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman __func__, status); 8441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return; 8451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 846d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", 847d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman __func__, status); 8481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds goto exit; 8491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 8501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 85159d33f2fc2d63796296b1b76143e039d6e7cf532Greg Kroah-Hartman usb_serial_debug_data(&port->dev, __func__, 852372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi urb->actual_length, urb->transfer_buffer); 853372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi 85497bb13ec5bc156352cca8af90080597e04299a73Flavio Leitner pl2303_update_line_status(port, data, actual_length); 8551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 8561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsexit: 857461d696aeeae294ad22dfcaae462d1757f955778Greg Kroah-Hartman retval = usb_submit_urb(urb, GFP_ATOMIC); 858ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold if (retval) { 859d8789b2b90aeb53ce59ac232d2ff0d8357d53893Greg Kroah-Hartman dev_err(&port->dev, 860372db8a780f63368c6960a167b7a19aad776d704Thiago Galesi "%s - usb_submit_urb failed with result %d\n", 861441b62c1edb986827154768d89bbac0ba779984fHarvey Harrison __func__, retval); 862ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold } 8631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 8641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 865f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovoldstatic void pl2303_process_read_urb(struct urb *urb) 866d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox{ 867f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold struct usb_serial_port *port = urb->context; 868f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold struct pl2303_private *priv = usb_get_serial_port_data(port); 869d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox unsigned char *data = urb->transfer_buffer; 870d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox char tty_flag = TTY_NORMAL; 871f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold unsigned long flags; 872f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold u8 line_status; 873f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold int i; 874f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold 875f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold /* update line status */ 876f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold spin_lock_irqsave(&priv->lock, flags); 877f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold line_status = priv->line_status; 878f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold priv->line_status &= ~UART_STATE_TRANSIENT_MASK; 879f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold spin_unlock_irqrestore(&priv->lock, flags); 880f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold 881f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold if (!urb->actual_length) 882f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold return; 883f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold 884ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold /* 885ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold * Break takes precedence over parity, which takes precedence over 886ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold * framing errors. 887ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold */ 888d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox if (line_status & UART_BREAK_ERROR) 889d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox tty_flag = TTY_BREAK; 890d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox else if (line_status & UART_PARITY_ERROR) 891d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox tty_flag = TTY_PARITY; 892d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox else if (line_status & UART_FRAME_ERROR) 893d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox tty_flag = TTY_FRAME; 894d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox 8953ba19fe31b726371b45f91a8de9341f5625e75e4Johan Hovold if (tty_flag != TTY_NORMAL) 8963ba19fe31b726371b45f91a8de9341f5625e75e4Johan Hovold dev_dbg(&port->dev, "%s - tty_flag = %d\n", __func__, 8973ba19fe31b726371b45f91a8de9341f5625e75e4Johan Hovold tty_flag); 898d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox /* overrun is special, not associated with a char */ 899d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox if (line_status & UART_OVERRUN_ERROR) 90092a19f9cec9a80ad93c06e115822deb729e2c6adJiri Slaby tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); 9019388e2e71a51fab0aa2309bbb45e8a23d89a95a9Johan Hovold 902d45cc8df7f59eb4db28408076ce979cd5e18f2b7Johan Hovold if (port->port.console && port->sysrq) { 903d4fc4a7bfc2dee626f4fec1e209e58eaa4312de6Alan Cox for (i = 0; i < urb->actual_length; ++i) 9046ee9f4b4affe751d313d2538999aeec134d413a6Dmitry Torokhov if (!usb_serial_handle_sysrq_char(port, data[i])) 90592a19f9cec9a80ad93c06e115822deb729e2c6adJiri Slaby tty_insert_flip_char(&port->port, data[i], 90692a19f9cec9a80ad93c06e115822deb729e2c6adJiri Slaby tty_flag); 907d45cc8df7f59eb4db28408076ce979cd5e18f2b7Johan Hovold } else { 9082f69335710884ae6112fc8196ebe29b5cda7b79bJiri Slaby tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, 909d45cc8df7f59eb4db28408076ce979cd5e18f2b7Johan Hovold urb->actual_length); 9109388e2e71a51fab0aa2309bbb45e8a23d89a95a9Johan Hovold } 9111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 9122e124b4a390ca85325fae75764bef92f0547fa25Jiri Slaby tty_flip_buffer_push(&port->port); 9131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 9141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 915572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesistatic struct usb_serial_driver pl2303_device = { 916572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .driver = { 917572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .owner = THIS_MODULE, 918572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .name = "pl2303", 919572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi }, 920572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .id_table = id_table, 921572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .num_ports = 1, 9227919c2fd9e07276403b9a4d9ae52305e0d70f923Johan Hovold .bulk_in_size = 256, 9233efeaff6298290b36499532f0b4c87aa4bae8aefJohan Hovold .bulk_out_size = 256, 924572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .open = pl2303_open, 925572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .close = pl2303_close, 926ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan Hovold .dtr_rts = pl2303_dtr_rts, 927335f8514f200e63d689113d29cb7253a5c282967Alan Cox .carrier_raised = pl2303_carrier_raised, 928572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .ioctl = pl2303_ioctl, 929572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .break_ctl = pl2303_break_ctl, 930572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .set_termios = pl2303_set_termios, 931572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .tiocmget = pl2303_tiocmget, 932572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .tiocmset = pl2303_tiocmset, 933824d11bef5540062d17380c65ee52d4b2948ca84Johan Hovold .tiocmiwait = pl2303_tiocmiwait, 934f08e07ac8b87b1a4b8ff88a061195e99282dfbbdJohan Hovold .process_read_urb = pl2303_process_read_urb, 935572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .read_int_callback = pl2303_read_int_callback, 936228e4105374cffd5372b1dbdf1f8ec8cf1d964aeJohan Hovold .probe = pl2303_probe, 937572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi .attach = pl2303_startup, 938f9c99bb8b3a1ec81af68d484a551307326c2e933Alan Stern .release = pl2303_release, 9398bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold .port_probe = pl2303_port_probe, 9408bf769eb5f6efc33f95088850f33fcc05d28b508Johan Hovold .port_remove = pl2303_port_remove, 941572d3138eb0cf17a2bf36944cc1d2c753578862eThiago Galesi}; 9421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 943f667ddad41e303ebc2c6d5bf3105dffe2fbdd717Alan Sternstatic struct usb_serial_driver * const serial_drivers[] = { 944f667ddad41e303ebc2c6d5bf3105dffe2fbdd717Alan Stern &pl2303_device, NULL 945f667ddad41e303ebc2c6d5bf3105dffe2fbdd717Alan Stern}; 946f667ddad41e303ebc2c6d5bf3105dffe2fbdd717Alan Stern 94768e24113457e437b1576670f2419b77ed0531e9eGreg Kroah-Hartmanmodule_usb_serial_driver(serial_drivers, id_table); 9481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 949ccfe8188a321f4039a7e52c8336bb4ff3ca35139Johan HovoldMODULE_DESCRIPTION("Prolific PL2303 USB to serial adaptor driver"); 9501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 951