298 lines
8.0 KiB
C
298 lines
8.0 KiB
C
/*********************************************************************
|
|
*
|
|
* Filename: act200l.c
|
|
* Version: 0.8
|
|
* Description: Implementation for the ACTiSYS ACT-IR200L dongle
|
|
* Status: Experimental.
|
|
* Author: SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>
|
|
* Created at: Fri Aug 3 17:35:42 2001
|
|
* Modified at: Fri Aug 17 10:22:40 2001
|
|
* Modified by: SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>
|
|
*
|
|
* Copyright (c) 2001 SHIMIZU Takuya, 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.
|
|
*
|
|
********************************************************************/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/tty.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <net/irda/irda.h>
|
|
#include <net/irda/irda_device.h>
|
|
|
|
static int act200l_reset(struct irda_task *task);
|
|
static void act200l_open(dongle_t *self, struct qos_info *qos);
|
|
static void act200l_close(dongle_t *self);
|
|
static int act200l_change_speed(struct irda_task *task);
|
|
|
|
/* Regsiter 0: Control register #1 */
|
|
#define ACT200L_REG0 0x00
|
|
#define ACT200L_TXEN 0x01 /* Enable transmitter */
|
|
#define ACT200L_RXEN 0x02 /* Enable receiver */
|
|
|
|
/* Register 1: Control register #2 */
|
|
#define ACT200L_REG1 0x10
|
|
#define ACT200L_LODB 0x01 /* Load new baud rate count value */
|
|
#define ACT200L_WIDE 0x04 /* Expand the maximum allowable pulse */
|
|
|
|
/* Register 4: Output Power register */
|
|
#define ACT200L_REG4 0x40
|
|
#define ACT200L_OP0 0x01 /* Enable LED1C output */
|
|
#define ACT200L_OP1 0x02 /* Enable LED2C output */
|
|
#define ACT200L_BLKR 0x04
|
|
|
|
/* Register 5: Receive Mode register */
|
|
#define ACT200L_REG5 0x50
|
|
#define ACT200L_RWIDL 0x01 /* fixed 1.6us pulse mode */
|
|
|
|
/* Register 6: Receive Sensitivity register #1 */
|
|
#define ACT200L_REG6 0x60
|
|
#define ACT200L_RS0 0x01 /* receive threshold bit 0 */
|
|
#define ACT200L_RS1 0x02 /* receive threshold bit 1 */
|
|
|
|
/* Register 7: Receive Sensitivity register #2 */
|
|
#define ACT200L_REG7 0x70
|
|
#define ACT200L_ENPOS 0x04 /* Ignore the falling edge */
|
|
|
|
/* Register 8,9: Baud Rate Dvider register #1,#2 */
|
|
#define ACT200L_REG8 0x80
|
|
#define ACT200L_REG9 0x90
|
|
|
|
#define ACT200L_2400 0x5f
|
|
#define ACT200L_9600 0x17
|
|
#define ACT200L_19200 0x0b
|
|
#define ACT200L_38400 0x05
|
|
#define ACT200L_57600 0x03
|
|
#define ACT200L_115200 0x01
|
|
|
|
/* Register 13: Control register #3 */
|
|
#define ACT200L_REG13 0xd0
|
|
#define ACT200L_SHDW 0x01 /* Enable access to shadow registers */
|
|
|
|
/* Register 15: Status register */
|
|
#define ACT200L_REG15 0xf0
|
|
|
|
/* Register 21: Control register #4 */
|
|
#define ACT200L_REG21 0x50
|
|
#define ACT200L_EXCK 0x02 /* Disable clock output driver */
|
|
#define ACT200L_OSCL 0x04 /* oscillator in low power, medium accuracy mode */
|
|
|
|
static struct dongle_reg dongle = {
|
|
.type = IRDA_ACT200L_DONGLE,
|
|
.open = act200l_open,
|
|
.close = act200l_close,
|
|
.reset = act200l_reset,
|
|
.change_speed = act200l_change_speed,
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
static int __init act200l_init(void)
|
|
{
|
|
return irda_device_register_dongle(&dongle);
|
|
}
|
|
|
|
static void __exit act200l_cleanup(void)
|
|
{
|
|
irda_device_unregister_dongle(&dongle);
|
|
}
|
|
|
|
static void act200l_open(dongle_t *self, struct qos_info *qos)
|
|
{
|
|
IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );
|
|
|
|
/* Power on the dongle */
|
|
self->set_dtr_rts(self->dev, TRUE, TRUE);
|
|
|
|
/* Set the speeds we can accept */
|
|
qos->baud_rate.bits &= IR_9600|IR_19200|IR_38400|IR_57600|IR_115200;
|
|
qos->min_turn_time.bits = 0x03;
|
|
}
|
|
|
|
static void act200l_close(dongle_t *self)
|
|
{
|
|
IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );
|
|
|
|
/* Power off the dongle */
|
|
self->set_dtr_rts(self->dev, FALSE, FALSE);
|
|
}
|
|
|
|
/*
|
|
* Function act200l_change_speed (dev, speed)
|
|
*
|
|
* Set the speed for the ACTiSYS ACT-IR200L type dongle.
|
|
*
|
|
*/
|
|
static int act200l_change_speed(struct irda_task *task)
|
|
{
|
|
dongle_t *self = (dongle_t *) task->instance;
|
|
__u32 speed = (__u32) task->param;
|
|
__u8 control[3];
|
|
int ret = 0;
|
|
|
|
IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );
|
|
|
|
self->speed_task = task;
|
|
|
|
switch (task->state) {
|
|
case IRDA_TASK_INIT:
|
|
if (irda_task_execute(self, act200l_reset, NULL, task,
|
|
(void *) speed))
|
|
{
|
|
/* Dongle need more time to reset */
|
|
irda_task_next_state(task, IRDA_TASK_CHILD_WAIT);
|
|
|
|
/* Give reset 1 sec to finish */
|
|
ret = msecs_to_jiffies(1000);
|
|
}
|
|
break;
|
|
case IRDA_TASK_CHILD_WAIT:
|
|
IRDA_WARNING("%s(), resetting dongle timed out!\n",
|
|
__FUNCTION__);
|
|
ret = -1;
|
|
break;
|
|
case IRDA_TASK_CHILD_DONE:
|
|
/* Clear DTR and set RTS to enter command mode */
|
|
self->set_dtr_rts(self->dev, FALSE, TRUE);
|
|
|
|
switch (speed) {
|
|
case 9600:
|
|
default:
|
|
control[0] = ACT200L_REG8 | (ACT200L_9600 & 0x0f);
|
|
control[1] = ACT200L_REG9 | ((ACT200L_9600 >> 4) & 0x0f);
|
|
break;
|
|
case 19200:
|
|
control[0] = ACT200L_REG8 | (ACT200L_19200 & 0x0f);
|
|
control[1] = ACT200L_REG9 | ((ACT200L_19200 >> 4) & 0x0f);
|
|
break;
|
|
case 38400:
|
|
control[0] = ACT200L_REG8 | (ACT200L_38400 & 0x0f);
|
|
control[1] = ACT200L_REG9 | ((ACT200L_38400 >> 4) & 0x0f);
|
|
break;
|
|
case 57600:
|
|
control[0] = ACT200L_REG8 | (ACT200L_57600 & 0x0f);
|
|
control[1] = ACT200L_REG9 | ((ACT200L_57600 >> 4) & 0x0f);
|
|
break;
|
|
case 115200:
|
|
control[0] = ACT200L_REG8 | (ACT200L_115200 & 0x0f);
|
|
control[1] = ACT200L_REG9 | ((ACT200L_115200 >> 4) & 0x0f);
|
|
break;
|
|
}
|
|
control[2] = ACT200L_REG1 | ACT200L_LODB | ACT200L_WIDE;
|
|
|
|
/* Write control bytes */
|
|
self->write(self->dev, control, 3);
|
|
irda_task_next_state(task, IRDA_TASK_WAIT);
|
|
ret = msecs_to_jiffies(5);
|
|
break;
|
|
case IRDA_TASK_WAIT:
|
|
/* Go back to normal mode */
|
|
self->set_dtr_rts(self->dev, TRUE, TRUE);
|
|
|
|
irda_task_next_state(task, IRDA_TASK_DONE);
|
|
self->speed_task = NULL;
|
|
break;
|
|
default:
|
|
IRDA_ERROR("%s(), unknown state %d\n",
|
|
__FUNCTION__, task->state);
|
|
irda_task_next_state(task, IRDA_TASK_DONE);
|
|
self->speed_task = NULL;
|
|
ret = -1;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Function act200l_reset (driver)
|
|
*
|
|
* Reset the ACTiSYS ACT-IR200L type dongle.
|
|
*/
|
|
static int act200l_reset(struct irda_task *task)
|
|
{
|
|
dongle_t *self = (dongle_t *) task->instance;
|
|
__u8 control[9] = {
|
|
ACT200L_REG15,
|
|
ACT200L_REG13 | ACT200L_SHDW,
|
|
ACT200L_REG21 | ACT200L_EXCK | ACT200L_OSCL,
|
|
ACT200L_REG13,
|
|
ACT200L_REG7 | ACT200L_ENPOS,
|
|
ACT200L_REG6 | ACT200L_RS0 | ACT200L_RS1,
|
|
ACT200L_REG5 | ACT200L_RWIDL,
|
|
ACT200L_REG4 | ACT200L_OP0 | ACT200L_OP1 | ACT200L_BLKR,
|
|
ACT200L_REG0 | ACT200L_TXEN | ACT200L_RXEN
|
|
};
|
|
int ret = 0;
|
|
|
|
IRDA_DEBUG(2, "%s()\n", __FUNCTION__ );
|
|
|
|
self->reset_task = task;
|
|
|
|
switch (task->state) {
|
|
case IRDA_TASK_INIT:
|
|
/* Power on the dongle */
|
|
self->set_dtr_rts(self->dev, TRUE, TRUE);
|
|
|
|
irda_task_next_state(task, IRDA_TASK_WAIT1);
|
|
ret = msecs_to_jiffies(50);
|
|
break;
|
|
case IRDA_TASK_WAIT1:
|
|
/* Reset the dongle : set RTS low for 25 ms */
|
|
self->set_dtr_rts(self->dev, TRUE, FALSE);
|
|
|
|
irda_task_next_state(task, IRDA_TASK_WAIT2);
|
|
ret = msecs_to_jiffies(50);
|
|
break;
|
|
case IRDA_TASK_WAIT2:
|
|
/* Clear DTR and set RTS to enter command mode */
|
|
self->set_dtr_rts(self->dev, FALSE, TRUE);
|
|
|
|
/* Write control bytes */
|
|
self->write(self->dev, control, 9);
|
|
irda_task_next_state(task, IRDA_TASK_WAIT3);
|
|
ret = msecs_to_jiffies(15);
|
|
break;
|
|
case IRDA_TASK_WAIT3:
|
|
/* Go back to normal mode */
|
|
self->set_dtr_rts(self->dev, TRUE, TRUE);
|
|
|
|
irda_task_next_state(task, IRDA_TASK_DONE);
|
|
self->reset_task = NULL;
|
|
break;
|
|
default:
|
|
IRDA_ERROR("%s(), unknown state %d\n",
|
|
__FUNCTION__, task->state);
|
|
irda_task_next_state(task, IRDA_TASK_DONE);
|
|
self->reset_task = NULL;
|
|
ret = -1;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
MODULE_AUTHOR("SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>");
|
|
MODULE_DESCRIPTION("ACTiSYS ACT-IR200L dongle driver");
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_ALIAS("irda-dongle-10"); /* IRDA_ACT200L_DONGLE */
|
|
|
|
/*
|
|
* Function init_module (void)
|
|
*
|
|
* Initialize ACTiSYS ACT-IR200L module
|
|
*
|
|
*/
|
|
module_init(act200l_init);
|
|
|
|
/*
|
|
* Function cleanup_module (void)
|
|
*
|
|
* Cleanup ACTiSYS ACT-IR200L module
|
|
*
|
|
*/
|
|
module_exit(act200l_cleanup);
|