11da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/********************************************************************* 21da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 31da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Filename: ma600.c 41da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Version: 0.1 51da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Description: Implementation of the MA600 dongle 61da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Status: Experimental. 71da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Author: Leung <95Etwl@alumni.ee.ust.hk> http://www.engsvr.ust/~eetwl95 81da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Created at: Sat Jun 10 20:02:35 2000 91da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modified at: Sat Aug 16 09:34:13 2003 101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Modified by: Martin Diehl <mad@mdiehl.de> (modified for new sir_dev) 111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Note: very thanks to Mr. Maru Wang <maru@mobileaction.com.tw> for providing 131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * information on the MA600 dongle 141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Copyright (c) 2000 Leung, All Rights Reserved. 161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is free software; you can redistribute it and/or 181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * modify it under the terms of the GNU General Public License as 191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * published by the Free Software Foundation; either version 2 of 201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * the License, or (at your option) any later version. 211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This program is distributed in the hope that it will be useful, 231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * but WITHOUT ANY WARRANTY; without even the implied warranty of 241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * GNU General Public License for more details. 261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * You should have received a copy of the GNU General Public License 281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * along with this program; if not, write to the Free Software 291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * MA 02111-1307 USA 311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds ********************************************************************/ 331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/module.h> 351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/delay.h> 361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <linux/init.h> 371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include <net/irda/irda.h> 391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#include "sir-dev.h" 411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ma600_open(struct sir_dev *); 431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ma600_close(struct sir_dev *); 441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ma600_change_speed(struct sir_dev *, unsigned); 451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ma600_reset(struct sir_dev *); 461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* control byte for MA600 */ 481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MA600_9600 0x00 491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MA600_19200 0x01 501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MA600_38400 0x02 511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MA600_57600 0x03 521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MA600_115200 0x04 531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MA600_DEV_ID1 0x05 541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MA600_DEV_ID2 0x06 551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#define MA600_2400 0x08 561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic struct dongle_driver ma600 = { 581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .owner = THIS_MODULE, 591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .driver_name = "MA600", 601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .type = IRDA_MA600_DONGLE, 611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .open = ma600_open, 621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .close = ma600_close, 631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .reset = ma600_reset, 641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds .set_speed = ma600_change_speed, 651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds}; 661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int __init ma600_sir_init(void) 691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 70a97a6f10771b90235b33c13a6db9279237a08422Harvey Harrison IRDA_DEBUG(2, "%s()\n", __func__); 711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return irda_register_dongle(&ma600); 721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic void __exit ma600_sir_cleanup(void) 751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 76a97a6f10771b90235b33c13a6db9279237a08422Harvey Harrison IRDA_DEBUG(2, "%s()\n", __func__); 771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irda_unregister_dongle(&ma600); 781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 791da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds Power on: 821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (0) Clear RTS and DTR for 1 second 831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (1) Set RTS and DTR for 1 second 841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (2) 9600 bps now 851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds Note: assume RTS, DTR are clear before 861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds*/ 871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ma600_open(struct sir_dev *dev) 881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds struct qos_info *qos = &dev->qos; 901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 91a97a6f10771b90235b33c13a6db9279237a08422Harvey Harrison IRDA_DEBUG(2, "%s()\n", __func__); 921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sirdev_set_dtr_rts(dev, TRUE, TRUE); 941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Explicitly set the speeds we can accept */ 961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qos->baud_rate.bits &= IR_2400|IR_9600|IR_19200|IR_38400 971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds |IR_57600|IR_115200; 981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Hm, 0x01 means 10ms - for >= 1ms we would need 0x07 */ 991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds qos->min_turn_time.bits = 0x01; /* Needs at least 1 ms */ 1001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds irda_qos_bits_to_value(qos); 1011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* irda thread waits 50 msec for power settling */ 1031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1041da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ma600_close(struct sir_dev *dev) 1081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 109a97a6f10771b90235b33c13a6db9279237a08422Harvey Harrison IRDA_DEBUG(2, "%s()\n", __func__); 1101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Power off dongle */ 1121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sirdev_set_dtr_rts(dev, FALSE, FALSE); 1131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 1151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic __u8 get_control_byte(__u32 speed) 1181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds __u8 byte; 1201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds switch (speed) { 1221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds default: 1231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 115200: 1241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds byte = MA600_115200; 1251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 57600: 1271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds byte = MA600_57600; 1281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 38400: 1301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds byte = MA600_38400; 1311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 19200: 1331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds byte = MA600_19200; 1341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 9600: 1361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds byte = MA600_9600; 1371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds case 2400: 1391da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds byte = MA600_2400; 1401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds break; 1411da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 1421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return byte; 1441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 1451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function ma600_change_speed (dev, speed) 1481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Set the speed for the MA600 type dongle. 1501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * The dongle has already been reset to a known state (dongle default) 1521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * We cycle through speeds by pulsing RTS low and then high. 1531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 1561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function ma600_change_speed (dev, speed) 1571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Set the speed for the MA600 type dongle. 1591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Algorithm 1611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1. Reset (already done by irda thread state machine) 1621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2. clear RTS, set DTR and wait for 1ms 1631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 3. send Control Byte to the MA600 through TXD to set new baud rate 1641da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * wait until the stop bit of Control Byte is sent (for 9600 baud rate, 1651da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * it takes about 10 msec) 1661da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 4. set RTS, set DTR (return to NORMAL Operation) 1671da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 5. wait at least 10 ms, new setting (baud rate, etc) takes effect here 1681da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * after 1691da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1701da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1711da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* total delays are only about 20ms - let's just sleep for now to 1721da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * avoid the state machine complexity before we get things working 1731da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 1741da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1751da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsstatic int ma600_change_speed(struct sir_dev *dev, unsigned speed) 1761da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 1771da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds u8 byte; 1781da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 179a97a6f10771b90235b33c13a6db9279237a08422Harvey Harrison IRDA_DEBUG(2, "%s(), speed=%d (was %d)\n", __func__, 1801da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds speed, dev->speed); 1811da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1821da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* dongle already reset, dongle and port at default speed (9600) */ 1831da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1841da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Set RTS low for 1 ms */ 1851da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sirdev_set_dtr_rts(dev, TRUE, FALSE); 1861da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds mdelay(1); 1871da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1881da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Write control byte */ 1891da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds byte = get_control_byte(speed); 1901da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sirdev_raw_write(dev, &byte, sizeof(byte)); 1911da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1921da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Wait at least 10ms: fake wait_until_sent - 10 bits at 9600 baud*/ 1931da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep(15); /* old ma600 uses 15ms */ 1941da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 1951da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#if 1 1961da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* read-back of the control byte. ma600 is the first dongle driver 1971da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * which uses this so there might be some unidentified issues. 1981da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Disable this in case of problems with readback. 1991da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2001da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2011da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sirdev_raw_read(dev, &byte, sizeof(byte)); 2021da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds if (byte != get_control_byte(speed)) { 2031da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds IRDA_WARNING("%s(): bad control byte read-back %02x != %02x\n", 204a97a6f10771b90235b33c13a6db9279237a08422Harvey Harrison __func__, (unsigned) byte, 2051da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds (unsigned) get_control_byte(speed)); 2061da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return -1; 2071da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds } 2081da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds else 209a97a6f10771b90235b33c13a6db9279237a08422Harvey Harrison IRDA_DEBUG(2, "%s() control byte write read OK\n", __func__); 2101da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds#endif 2111da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2121da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Set DTR, Set RTS */ 2131da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sirdev_set_dtr_rts(dev, TRUE, TRUE); 2141da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2151da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Wait at least 10ms */ 2161da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep(10); 2171da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2181da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* dongle is now switched to the new speed */ 2191da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->speed = speed; 2201da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2211da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2221da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2231da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2241da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* 2251da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Function ma600_reset (dev) 2261da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2271da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * This function resets the ma600 dongle. 2281da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2291da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * Algorithm: 2301da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 0. DTR=0, RTS=1 and wait 10 ms 2311da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 1. DTR=1, RTS=1 and wait 10 ms 2321da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * 2. 9600 bps now 2331da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2341da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2351da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds/* total delays are only about 20ms - let's just sleep for now to 2361da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds * avoid the state machine complexity before we get things working 2371da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds */ 2381da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2390e49e64526ccd8cb78d7c4b4a732024ff221d4d0Hannes Ederstatic int ma600_reset(struct sir_dev *dev) 2401da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds{ 241a97a6f10771b90235b33c13a6db9279237a08422Harvey Harrison IRDA_DEBUG(2, "%s()\n", __func__); 2421da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2431da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Reset the dongle : set DTR low for 10 ms */ 2441da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sirdev_set_dtr_rts(dev, FALSE, TRUE); 2451da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep(10); 2461da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2471da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds /* Go back to normal mode */ 2481da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds sirdev_set_dtr_rts(dev, TRUE, TRUE); 2491da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds msleep(10); 2501da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2511da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds dev->speed = 9600; /* That's the dongle-default */ 2521da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2531da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds return 0; 2541da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds} 2551da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2561da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_AUTHOR("Leung <95Etwl@alumni.ee.ust.hk> http://www.engsvr.ust/~eetwl95"); 2571da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_DESCRIPTION("MA600 dongle driver version 0.1"); 2581da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_LICENSE("GPL"); 2591da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus TorvaldsMODULE_ALIAS("irda-dongle-11"); /* IRDA_MA600_DONGLE */ 2601da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 2611da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_init(ma600_sir_init); 2621da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvaldsmodule_exit(ma600_sir_cleanup); 2631da177e4c3f41524e886b7f1b8a0c1fc7321cacLinus Torvalds 264