Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
This commit is contained in:
Linus Torvalds
264
drivers/net/irda/ma600-sir.c
Normal file
264
drivers/net/irda/ma600-sir.c
Normal file
@@ -0,0 +1,264 @@
|
||||
/*********************************************************************
|
||||
*
|
||||
* Filename: ma600.c
|
||||
* Version: 0.1
|
||||
* Description: Implementation of the MA600 dongle
|
||||
* Status: Experimental.
|
||||
* Author: Leung <95Etwl@alumni.ee.ust.hk> http://www.engsvr.ust/~eetwl95
|
||||
* Created at: Sat Jun 10 20:02:35 2000
|
||||
* Modified at: Sat Aug 16 09:34:13 2003
|
||||
* Modified by: Martin Diehl <mad@mdiehl.de> (modified for new sir_dev)
|
||||
*
|
||||
* Note: very thanks to Mr. Maru Wang <maru@mobileaction.com.tw> for providing
|
||||
* information on the MA600 dongle
|
||||
*
|
||||
* Copyright (c) 2000 Leung, 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, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||
* MA 02111-1307 USA
|
||||
*
|
||||
********************************************************************/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/delay.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/sched.h>
|
||||
|
||||
#include <net/irda/irda.h>
|
||||
|
||||
#include "sir-dev.h"
|
||||
|
||||
static int ma600_open(struct sir_dev *);
|
||||
static int ma600_close(struct sir_dev *);
|
||||
static int ma600_change_speed(struct sir_dev *, unsigned);
|
||||
static int ma600_reset(struct sir_dev *);
|
||||
|
||||
/* control byte for MA600 */
|
||||
#define MA600_9600 0x00
|
||||
#define MA600_19200 0x01
|
||||
#define MA600_38400 0x02
|
||||
#define MA600_57600 0x03
|
||||
#define MA600_115200 0x04
|
||||
#define MA600_DEV_ID1 0x05
|
||||
#define MA600_DEV_ID2 0x06
|
||||
#define MA600_2400 0x08
|
||||
|
||||
static struct dongle_driver ma600 = {
|
||||
.owner = THIS_MODULE,
|
||||
.driver_name = "MA600",
|
||||
.type = IRDA_MA600_DONGLE,
|
||||
.open = ma600_open,
|
||||
.close = ma600_close,
|
||||
.reset = ma600_reset,
|
||||
.set_speed = ma600_change_speed,
|
||||
};
|
||||
|
||||
|
||||
static int __init ma600_sir_init(void)
|
||||
{
|
||||
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
|
||||
return irda_register_dongle(&ma600);
|
||||
}
|
||||
|
||||
static void __exit ma600_sir_cleanup(void)
|
||||
{
|
||||
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
|
||||
irda_unregister_dongle(&ma600);
|
||||
}
|
||||
|
||||
/*
|
||||
Power on:
|
||||
(0) Clear RTS and DTR for 1 second
|
||||
(1) Set RTS and DTR for 1 second
|
||||
(2) 9600 bps now
|
||||
Note: assume RTS, DTR are clear before
|
||||
*/
|
||||
static int ma600_open(struct sir_dev *dev)
|
||||
{
|
||||
struct qos_info *qos = &dev->qos;
|
||||
|
||||
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
|
||||
|
||||
sirdev_set_dtr_rts(dev, TRUE, TRUE);
|
||||
|
||||
/* Explicitly set the speeds we can accept */
|
||||
qos->baud_rate.bits &= IR_2400|IR_9600|IR_19200|IR_38400
|
||||
|IR_57600|IR_115200;
|
||||
/* Hm, 0x01 means 10ms - for >= 1ms we would need 0x07 */
|
||||
qos->min_turn_time.bits = 0x01; /* Needs at least 1 ms */
|
||||
irda_qos_bits_to_value(qos);
|
||||
|
||||
/* irda thread waits 50 msec for power settling */
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int ma600_close(struct sir_dev *dev)
|
||||
{
|
||||
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
|
||||
|
||||
/* Power off dongle */
|
||||
sirdev_set_dtr_rts(dev, FALSE, FALSE);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static __u8 get_control_byte(__u32 speed)
|
||||
{
|
||||
__u8 byte;
|
||||
|
||||
switch (speed) {
|
||||
default:
|
||||
case 115200:
|
||||
byte = MA600_115200;
|
||||
break;
|
||||
case 57600:
|
||||
byte = MA600_57600;
|
||||
break;
|
||||
case 38400:
|
||||
byte = MA600_38400;
|
||||
break;
|
||||
case 19200:
|
||||
byte = MA600_19200;
|
||||
break;
|
||||
case 9600:
|
||||
byte = MA600_9600;
|
||||
break;
|
||||
case 2400:
|
||||
byte = MA600_2400;
|
||||
break;
|
||||
}
|
||||
|
||||
return byte;
|
||||
}
|
||||
|
||||
/*
|
||||
* Function ma600_change_speed (dev, speed)
|
||||
*
|
||||
* Set the speed for the MA600 type dongle.
|
||||
*
|
||||
* The dongle has already been reset to a known state (dongle default)
|
||||
* We cycle through speeds by pulsing RTS low and then high.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Function ma600_change_speed (dev, speed)
|
||||
*
|
||||
* Set the speed for the MA600 type dongle.
|
||||
*
|
||||
* Algorithm
|
||||
* 1. Reset (already done by irda thread state machine)
|
||||
* 2. clear RTS, set DTR and wait for 1ms
|
||||
* 3. send Control Byte to the MA600 through TXD to set new baud rate
|
||||
* wait until the stop bit of Control Byte is sent (for 9600 baud rate,
|
||||
* it takes about 10 msec)
|
||||
* 4. set RTS, set DTR (return to NORMAL Operation)
|
||||
* 5. wait at least 10 ms, new setting (baud rate, etc) takes effect here
|
||||
* after
|
||||
*/
|
||||
|
||||
/* total delays are only about 20ms - let's just sleep for now to
|
||||
* avoid the state machine complexity before we get things working
|
||||
*/
|
||||
|
||||
static int ma600_change_speed(struct sir_dev *dev, unsigned speed)
|
||||
{
|
||||
u8 byte;
|
||||
|
||||
IRDA_DEBUG(2, "%s(), speed=%d (was %d)\n", __FUNCTION__,
|
||||
speed, dev->speed);
|
||||
|
||||
/* dongle already reset, dongle and port at default speed (9600) */
|
||||
|
||||
/* Set RTS low for 1 ms */
|
||||
sirdev_set_dtr_rts(dev, TRUE, FALSE);
|
||||
mdelay(1);
|
||||
|
||||
/* Write control byte */
|
||||
byte = get_control_byte(speed);
|
||||
sirdev_raw_write(dev, &byte, sizeof(byte));
|
||||
|
||||
/* Wait at least 10ms: fake wait_until_sent - 10 bits at 9600 baud*/
|
||||
msleep(15); /* old ma600 uses 15ms */
|
||||
|
||||
#if 1
|
||||
/* read-back of the control byte. ma600 is the first dongle driver
|
||||
* which uses this so there might be some unidentified issues.
|
||||
* Disable this in case of problems with readback.
|
||||
*/
|
||||
|
||||
sirdev_raw_read(dev, &byte, sizeof(byte));
|
||||
if (byte != get_control_byte(speed)) {
|
||||
IRDA_WARNING("%s(): bad control byte read-back %02x != %02x\n",
|
||||
__FUNCTION__, (unsigned) byte,
|
||||
(unsigned) get_control_byte(speed));
|
||||
return -1;
|
||||
}
|
||||
else
|
||||
IRDA_DEBUG(2, "%s() control byte write read OK\n", __FUNCTION__);
|
||||
#endif
|
||||
|
||||
/* Set DTR, Set RTS */
|
||||
sirdev_set_dtr_rts(dev, TRUE, TRUE);
|
||||
|
||||
/* Wait at least 10ms */
|
||||
msleep(10);
|
||||
|
||||
/* dongle is now switched to the new speed */
|
||||
dev->speed = speed;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Function ma600_reset (dev)
|
||||
*
|
||||
* This function resets the ma600 dongle.
|
||||
*
|
||||
* Algorithm:
|
||||
* 0. DTR=0, RTS=1 and wait 10 ms
|
||||
* 1. DTR=1, RTS=1 and wait 10 ms
|
||||
* 2. 9600 bps now
|
||||
*/
|
||||
|
||||
/* total delays are only about 20ms - let's just sleep for now to
|
||||
* avoid the state machine complexity before we get things working
|
||||
*/
|
||||
|
||||
int ma600_reset(struct sir_dev *dev)
|
||||
{
|
||||
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
|
||||
|
||||
/* Reset the dongle : set DTR low for 10 ms */
|
||||
sirdev_set_dtr_rts(dev, FALSE, TRUE);
|
||||
msleep(10);
|
||||
|
||||
/* Go back to normal mode */
|
||||
sirdev_set_dtr_rts(dev, TRUE, TRUE);
|
||||
msleep(10);
|
||||
|
||||
dev->speed = 9600; /* That's the dongle-default */
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
MODULE_AUTHOR("Leung <95Etwl@alumni.ee.ust.hk> http://www.engsvr.ust/~eetwl95");
|
||||
MODULE_DESCRIPTION("MA600 dongle driver version 0.1");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_ALIAS("irda-dongle-11"); /* IRDA_MA600_DONGLE */
|
||||
|
||||
module_init(ma600_sir_init);
|
||||
module_exit(ma600_sir_cleanup);
|
||||
|
||||
Reference in New Issue
Block a user