diff options
Diffstat (limited to 'drivers/net/irda/litelink-sir.c')
| -rw-r--r-- | drivers/net/irda/litelink-sir.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/drivers/net/irda/litelink-sir.c b/drivers/net/irda/litelink-sir.c deleted file mode 100644 index 8eefcb44bac3..000000000000 --- a/drivers/net/irda/litelink-sir.c +++ /dev/null @@ -1,199 +0,0 @@ -/********************************************************************* - * - * Filename: litelink.c - * Version: 1.1 - * Description: Driver for the Parallax LiteLink dongle - * Status: Stable - * Author: Dag Brattli <dagb@cs.uit.no> - * Created at: Fri May 7 12:50:33 1999 - * Modified at: Fri Dec 17 09:14:23 1999 - * Modified by: Dag Brattli <dagb@cs.uit.no> - * - * Copyright (c) 1999 Dag Brattli, All Rights Reserved. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see <http://www.gnu.org/licenses/>. - * - ********************************************************************/ - -/* - * Modified at: Thu Jan 15 2003 - * Modified by: Eugene Crosser <crosser@average.org> - * - * Convert to "new" IRDA infrastructure for kernel 2.6 - */ - -#include <linux/module.h> -#include <linux/delay.h> -#include <linux/init.h> - -#include <net/irda/irda.h> - -#include "sir-dev.h" - -#define MIN_DELAY 25 /* 15 us, but wait a little more to be sure */ -#define MAX_DELAY 10000 /* 1 ms */ - -static int litelink_open(struct sir_dev *dev); -static int litelink_close(struct sir_dev *dev); -static int litelink_change_speed(struct sir_dev *dev, unsigned speed); -static int litelink_reset(struct sir_dev *dev); - -/* These are the baudrates supported - 9600 must be last one! */ -static unsigned baud_rates[] = { 115200, 57600, 38400, 19200, 9600 }; - -static struct dongle_driver litelink = { - .owner = THIS_MODULE, - .driver_name = "Parallax LiteLink", - .type = IRDA_LITELINK_DONGLE, - .open = litelink_open, - .close = litelink_close, - .reset = litelink_reset, - .set_speed = litelink_change_speed, -}; - -static int __init litelink_sir_init(void) -{ - return irda_register_dongle(&litelink); -} - -static void __exit litelink_sir_cleanup(void) -{ - irda_unregister_dongle(&litelink); -} - -static int litelink_open(struct sir_dev *dev) -{ - struct qos_info *qos = &dev->qos; - - /* Power up dongle */ - sirdev_set_dtr_rts(dev, TRUE, TRUE); - - /* Set the speeds we can accept */ - qos->baud_rate.bits &= IR_115200|IR_57600|IR_38400|IR_19200|IR_9600; - qos->min_turn_time.bits = 0x7f; /* Needs 0.01 ms */ - irda_qos_bits_to_value(qos); - - /* irda thread waits 50 msec for power settling */ - - return 0; -} - -static int litelink_close(struct sir_dev *dev) -{ - /* Power off dongle */ - sirdev_set_dtr_rts(dev, FALSE, FALSE); - - return 0; -} - -/* - * Function litelink_change_speed (task) - * - * Change speed of the Litelink dongle. To cycle through the available - * baud rates, pulse RTS low for a few ms. - */ -static int litelink_change_speed(struct sir_dev *dev, unsigned speed) -{ - int i; - - /* dongle already reset by irda-thread - current speed (dongle and - * port) is the default speed (115200 for litelink!) - */ - - /* Cycle through avaiable baudrates until we reach the correct one */ - for (i = 0; baud_rates[i] != speed; i++) { - - /* end-of-list reached due to invalid speed request */ - if (baud_rates[i] == 9600) - break; - - /* Set DTR, clear RTS */ - sirdev_set_dtr_rts(dev, FALSE, TRUE); - - /* Sleep a minimum of 15 us */ - udelay(MIN_DELAY); - - /* Set DTR, Set RTS */ - sirdev_set_dtr_rts(dev, TRUE, TRUE); - - /* Sleep a minimum of 15 us */ - udelay(MIN_DELAY); - } - - dev->speed = baud_rates[i]; - - /* invalid baudrate should not happen - but if, we return -EINVAL and - * the dongle configured for 9600 so the stack has a chance to recover - */ - - return (dev->speed == speed) ? 0 : -EINVAL; -} - -/* - * Function litelink_reset (task) - * - * Reset the Litelink type dongle. - * - */ -static int litelink_reset(struct sir_dev *dev) -{ - /* probably the power-up can be dropped here, but with only - * 15 usec delay it's not worth the risk unless somebody with - * the hardware confirms it doesn't break anything... - */ - - /* Power on dongle */ - sirdev_set_dtr_rts(dev, TRUE, TRUE); - - /* Sleep a minimum of 15 us */ - udelay(MIN_DELAY); - - /* Clear RTS to reset dongle */ - sirdev_set_dtr_rts(dev, TRUE, FALSE); - - /* Sleep a minimum of 15 us */ - udelay(MIN_DELAY); - - /* Go back to normal mode */ - sirdev_set_dtr_rts(dev, TRUE, TRUE); - - /* Sleep a minimum of 15 us */ - udelay(MIN_DELAY); - - /* This dongles speed defaults to 115200 bps */ - dev->speed = 115200; - - return 0; -} - -MODULE_AUTHOR("Dag Brattli <dagb@cs.uit.no>"); -MODULE_DESCRIPTION("Parallax Litelink dongle driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("irda-dongle-5"); /* IRDA_LITELINK_DONGLE */ - -/* - * Function init_module (void) - * - * Initialize Litelink module - * - */ -module_init(litelink_sir_init); - -/* - * Function cleanup_module (void) - * - * Cleanup Litelink module - * - */ -module_exit(litelink_sir_cleanup); |