/*
* Function esi_change_speed (task)
*
* Set the speed for the Extended Systems JetEye PC ESI-9680 type dongle
*
*/
static int esi_change_speed(struct irda_task *task)
{
dongle_t *self = (dongle_t *) task->instance;
__u32 speed = (__u32) task->param;
int dtr, rts;
switch (speed) {
case 19200:
dtr = TRUE;
rts = FALSE;
break;
case 115200:
dtr = rts = TRUE;
break;
case 9600:
default:
dtr = FALSE;
rts = TRUE;
break;
}
/* Change speed of dongle */
self->set_dtr_rts(self->dev, dtr, rts);
self->speed = speed;
irda_task_next_state(task, IRDA_TASK_DONE);
return 0;
}
/*
* Function esi_reset (task)
*
* Reset dongle;
*
*/
static int esi_reset(struct irda_task *task)
{
dongle_t *self = (dongle_t *) task->instance;
self->set_dtr_rts(self->dev, FALSE, FALSE);
irda_task_next_state(task, IRDA_TASK_DONE);
return 0;
}
/*
* Function girbil_reset (driver)
*
* This function resets the girbil dongle.
*
* Algorithm:
* 0. set RTS, and wait at least 5 ms
* 1. clear RTS
*/
static int girbil_reset(struct irda_task *task)
{
dongle_t *self = (dongle_t *) task->instance;
__u8 control = GIRBIL_TXEN | GIRBIL_RXEN;
int ret = 0;
self->reset_task = task;
switch (task->state) {
case IRDA_TASK_INIT:
/* Reset dongle */
self->set_dtr_rts(self->dev, TRUE, FALSE);
irda_task_next_state(task, IRDA_TASK_WAIT1);
/* Sleep at least 5 ms */
ret = MSECS_TO_JIFFIES(20);
break;
case IRDA_TASK_WAIT1:
/* Set DTR and clear RTS to enter command mode */
self->set_dtr_rts(self->dev, FALSE, TRUE);
irda_task_next_state(task, IRDA_TASK_WAIT2);
ret = MSECS_TO_JIFFIES(20);
break;
case IRDA_TASK_WAIT2:
/* Write control byte */
self->write(self->dev, &control, 1);
irda_task_next_state(task, IRDA_TASK_WAIT3);
ret = MSECS_TO_JIFFIES(20);
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:
ERROR(__FUNCTION__ "(), unknown state %d\n", task->state);
irda_task_next_state(task, IRDA_TASK_DONE);
self->reset_task = NULL;
ret = -1;
break;
}
return ret;
}
static int mcp2120_reset(struct irda_task *task)
{
dongle_t *self = (dongle_t *) task->instance;
int ret = 0;
self->reset_task = task;
switch (task->state) {
case IRDA_TASK_INIT:
//printk("mcp2120_reset irda_task_init\n");
/* Reset dongle by setting RTS*/
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:
//printk("mcp2120_reset irda_task_wait1\n");
/* clear RTS and wait for at least 30 ms. */
self->set_dtr_rts(self->dev, FALSE, FALSE);
irda_task_next_state(task, IRDA_TASK_WAIT2);
ret = MSECS_TO_JIFFIES(50);
break;
case IRDA_TASK_WAIT2:
//printk("mcp2120_reset irda_task_wait2\n");
/* Go back to normal mode */
self->set_dtr_rts(self->dev, FALSE, FALSE);
irda_task_next_state(task, IRDA_TASK_DONE);
self->reset_task = NULL;
break;
default:
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;
}
/*
* Function actisys_change_speed (task)
*
* Change speed of the ACTiSYS IR-220L and IR-220L+ type IrDA dongles.
* To cycle through the available baud rates, pulse RTS low for a few us.
*
* First, we reset the dongle to always start from a known state.
* Then, we cycle through the speeds by pulsing RTS low and then up.
* The dongle allow us to pulse quite fast, se we can set speed in one go,
* which is must faster ( < 100 us) and less complex than what is found
* in some other dongle drivers...
* Note that even if the new speed is the same as the current speed,
* we reassert the speed. This make sure that things are all right,
* and it's fast anyway...
* By the way, this function will work for both type of dongles,
* because the additional speed is at the end of the sequence...
*/
static int actisys_change_speed(struct irda_task *task)
{
dongle_t *self = (dongle_t *) task->instance;
__u32 speed = (__u32) task->param; /* Target speed */
int ret = 0;
int i = 0;
IRDA_DEBUG(4, __FUNCTION__ "(), speed=%d (was %d)\n", speed,
self->speed);
/* Go to a known state by reseting the dongle */
/* Reset the dongle : set DTR low for 10 us */
self->set_dtr_rts(self->dev, FALSE, TRUE);
udelay(MIN_DELAY);
/* Go back to normal mode (we are now at 9600 b/s) */
self->set_dtr_rts(self->dev, TRUE, TRUE);
/*
* Now, we can set the speed requested. Send RTS pulses until we
* reach the target speed
*/
for (i=0; i<MAX_SPEEDS; i++) {
if (speed == baud_rates[i]) {
self->speed = baud_rates[i];
break;
}
/* Make sure previous pulse is finished */
udelay(MIN_DELAY);
/* Set RTS low for 10 us */
self->set_dtr_rts(self->dev, TRUE, FALSE);
udelay(MIN_DELAY);
/* Set RTS high for 10 us */
self->set_dtr_rts(self->dev, TRUE, TRUE);
}
/* Check if life is sweet... */
if (i >= MAX_SPEEDS)
ret = -1; /* This should not happen */
/* Basta lavoro, on se casse d'ici... */
irda_task_next_state(task, IRDA_TASK_DONE);
return ret;
}
/*
* Function ep7211_ir_reset (task)
*
* Reset the EP7211 I/R. We don't really have to do anything.
*
*/
static int ep7211_ir_reset(struct irda_task *task)
{
irda_task_next_state(task, IRDA_TASK_DONE);
return 0;
}
/*
* Function ep7211_ir_change_speed (task)
*
* Change speed of the EP7211 I/R port. We don't really have to do anything
* for the EP7211 as long as the rate is being changed at the serial port
* level.
*/
static int ep7211_ir_change_speed(struct irda_task *task)
{
irda_task_next_state(task, IRDA_TASK_DONE);
return 0;
}
/*
* Function mcp2120_change_speed (dev, speed)
*
* Set the speed for the MCP2120.
*
*/
static int mcp2120_change_speed(struct irda_task *task)
{
dongle_t *self = (dongle_t *) task->instance;
__u32 speed = (__u32) task->param;
__u8 control[2];
int ret = 0;
self->speed_task = task;
switch (task->state) {
case IRDA_TASK_INIT:
/* Need to reset the dongle and go to 9600 bps before
programming */
//printk("Dmcp2120_change_speed irda_task_init\n");
if (irda_task_execute(self, mcp2120_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:
WARNING("%s(), resetting dongle timed out!\n", __FUNCTION__);
ret = -1;
break;
case IRDA_TASK_CHILD_DONE:
/* Set DTR to enter command mode */
self->set_dtr_rts(self->dev, TRUE, FALSE);
udelay(500);
switch (speed) {
case 9600:
default:
control[0] = MCP2120_9600;
//printk("mcp2120 9600\n");
break;
case 19200:
control[0] = MCP2120_19200;
//printk("mcp2120 19200\n");
break;
case 34800:
control[0] = MCP2120_38400;
//printk("mcp2120 38400\n");
break;
case 57600:
control[0] = MCP2120_57600;
//printk("mcp2120 57600\n");
break;
case 115200:
control[0] = MCP2120_115200;
//printk("mcp2120 115200\n");
break;
}
control[1] = MCP2120_COMMIT;
/* Write control bytes */
self->write(self->dev, control, 2);
irda_task_next_state(task, IRDA_TASK_WAIT);
ret = MSECS_TO_JIFFIES(100);
//printk("mcp2120_change_speed irda_child_done\n");
break;
case IRDA_TASK_WAIT:
/* Go back to normal mode */
self->set_dtr_rts(self->dev, FALSE, FALSE);
irda_task_next_state(task, IRDA_TASK_DONE);
self->speed_task = NULL;
//printk("mcp2120_change_speed irda_task_wait\n");
break;
default:
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 ep93xx_sir_reset (task)
*
* Reset the EP93xx IrDA. We don't really have to do anything.
*
*/
static int ep93xx_sir_reset(struct irda_task *task)
{
DPRINTK("----------------\n ep93xx_sir_reset \n-----------------\n");
irda_task_next_state(task, IRDA_TASK_DONE);
return 0;
}
/*
* Function ep93xx_sir_change_speed (task)
*
* Change speed of the EP93xx I/R port. We don't have to do anything
* here as long as the rate is being changed at the serial port
* level. irtty.c should take care of that.
*/
static int ep93xx_sir_change_speed(struct irda_task *task)
{
DPRINTK("----------------\n ep93xx_sir_change_speed \n-----------------\n");
irda_task_next_state(task, IRDA_TASK_DONE);
return 0;
}
/*
* Function girbil_change_speed (dev, speed)
*
* Set the speed for the Girbil type dongle.
*
*/
static int girbil_change_speed(struct irda_task *task)
{
dongle_t *self = (dongle_t *) task->instance;
__u32 speed = (__u32) task->param;
__u8 control[2];
int ret = 0;
self->speed_task = task;
switch (task->state) {
case IRDA_TASK_INIT:
/* Need to reset the dongle and go to 9600 bps before
programming */
if (irda_task_execute(self, girbil_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:
WARNING(__FUNCTION__ "(), resetting dongle timed out!\n");
ret = -1;
break;
case IRDA_TASK_CHILD_DONE:
/* Set DTR and Clear RTS to enter command mode */
self->set_dtr_rts(self->dev, FALSE, TRUE);
switch (speed) {
case 9600:
default:
control[0] = GIRBIL_9600;
break;
case 19200:
control[0] = GIRBIL_19200;
break;
case 34800:
control[0] = GIRBIL_38400;
break;
case 57600:
control[0] = GIRBIL_57600;
break;
case 115200:
control[0] = GIRBIL_115200;
break;
}
control[1] = GIRBIL_LOAD;
/* Write control bytes */
self->write(self->dev, control, 2);
irda_task_next_state(task, IRDA_TASK_WAIT);
ret = MSECS_TO_JIFFIES(100);
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:
ERROR(__FUNCTION__ "(), unknown state %d\n", task->state);
irda_task_next_state(task, IRDA_TASK_DONE);
self->speed_task = NULL;
ret = -1;
break;
}
return ret;
}