static int litelink_change_speed(struct sir_dev *dev, unsigned speed)
{
int i;
IRDA_DEBUG(2, "%s()\n", __func__);
for (i = 0; baud_rates[i] != speed; i++) {
if (baud_rates[i] == 9600)
break;
sirdev_set_dtr_rts(dev, FALSE, TRUE);
udelay(MIN_DELAY);
sirdev_set_dtr_rts(dev, TRUE, TRUE);
udelay(MIN_DELAY);
}
dev->speed = baud_rates[i];
return (dev->speed == speed) ? 0 : -EINVAL;
}
/*
* Function litelink_reset (task)
*
* Reset the Litelink type dongle.
*
*/
static int litelink_reset(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
/* 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);
dev->speed = 115200;
return 0;
}
static int litelink_reset(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
sirdev_set_dtr_rts(dev, TRUE, TRUE);
udelay(MIN_DELAY);
sirdev_set_dtr_rts(dev, TRUE, FALSE);
udelay(MIN_DELAY);
sirdev_set_dtr_rts(dev, TRUE, TRUE);
udelay(MIN_DELAY);
dev->speed = 115200;
return 0;
}
static int esi_reset(struct sir_dev *dev)
{
sirdev_set_dtr_rts(dev, FALSE, FALSE);
sirdev_set_dtr_rts(dev, FALSE, TRUE);
dev->speed = 9600;
return 0;
}
static int actisys_reset(struct sir_dev *dev)
{
/* Reset the dongle : set DTR low for 10 us */
sirdev_set_dtr_rts(dev, FALSE, TRUE);
udelay(MIN_DELAY);
/* Go back to normal mode */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
dev->speed = 9600; /* That's the default */
return 0;
}
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*/
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(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)) {
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 */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(10));
/* dongle is now switched to the new speed */
dev->speed = speed;
return 0;
}
int ma600_reset(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
/* 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;
}
static int esi_close(struct sir_dev *dev)
{
sirdev_set_dtr_rts(dev, FALSE, FALSE);
return 0;
}
static int toim3232_close(struct sir_dev *dev)
{
/* Power off dongle */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
return 0;
}
static int toim3232_open(struct sir_dev *dev)
{
struct qos_info *qos = &dev->qos;
IRDA_DEBUG(2, "%s()\n", __func__);
/* Pull the lines high to start with.
*
* For the IR320ST-2, we need to charge the main supply capacitor to
* switch the device on. We keep DTR high throughout to do this.
* When RTS, TD and RD are high, they will also trickle-charge the
* cap. RTS is high for data transmission, and low for baud rate select.
* -- DGB
*/
sirdev_set_dtr_rts(dev, TRUE, TRUE);
/* The TOI3232 supports many speeds between 1200bps and 115000bps.
* We really only care about those supported by the IRDA spec, but
* 38400 seems to be implemented in many places */
qos->baud_rate.bits &= IR_2400|IR_9600|IR_19200|IR_38400|IR_57600|IR_115200;
/* From the tekram driver. Not sure what a reasonable value is -- DGB */
qos->min_turn_time.bits = 0x01; /* Needs at least 10 ms */
irda_qos_bits_to_value(qos);
/* irda thread waits 50 msec for power settling */
return 0;
}
static int actisys_close(struct sir_dev *dev)
{
/* Power off the dongle */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
return 0;
}
static int esi_change_speed(struct sir_dev *dev, unsigned speed)
{
int ret = 0;
int dtr, rts;
switch (speed) {
case 19200:
dtr = TRUE;
rts = FALSE;
break;
case 115200:
dtr = rts = TRUE;
break;
default:
ret = -EINVAL;
speed = 9600;
case 9600:
dtr = FALSE;
rts = TRUE;
break;
}
sirdev_set_dtr_rts(dev, dtr, rts);
dev->speed = speed;
return ret;
}
static int girbil_reset(struct sir_dev *dev)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
u8 control = GIRBIL_TXEN | GIRBIL_RXEN;
int ret = 0;
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
switch (state) {
case SIRDEV_STATE_DONGLE_RESET:
/* Reset dongle */
sirdev_set_dtr_rts(dev, TRUE, FALSE);
/* Sleep at least 5 ms */
delay = 20;
state = GIRBIL_STATE_WAIT1_RESET;
break;
case GIRBIL_STATE_WAIT1_RESET:
/* Set DTR and clear RTS to enter command mode */
sirdev_set_dtr_rts(dev, FALSE, TRUE);
delay = 20;
state = GIRBIL_STATE_WAIT2_RESET;
break;
case GIRBIL_STATE_WAIT2_RESET:
/* Write control byte */
sirdev_raw_write(dev, &control, 1);
delay = 20;
state = GIRBIL_STATE_WAIT3_RESET;
break;
case GIRBIL_STATE_WAIT3_RESET:
/* Go back to normal mode */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
dev->speed = 9600;
break;
default:
IRDA_ERROR("%s(), undefined state %d\n", __FUNCTION__, state);
ret = -1;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
/*
* Function esi_reset (task)
*
* Reset dongle;
*
*/
static int esi_reset(struct sir_dev *dev)
{
sirdev_set_dtr_rts(dev, FALSE, FALSE);
/* Hm, the old esi-driver left the dongle unpowered relying on
* the following speed change to repower. This might work for
* the esi because we only need the modem lines. However, now the
* general rule is reset must bring the dongle to some working
* well-known state because speed change might write to registers.
* The old esi-driver didn't any delay here - let's hope it' fine.
*/
sirdev_set_dtr_rts(dev, FALSE, TRUE);
dev->speed = 9600;
return 0;
}
static int girbil_reset(struct sir_dev *dev)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
u8 control = GIRBIL_TXEN | GIRBIL_RXEN;
int ret = 0;
IRDA_DEBUG(2, "%s()\n", __func__);
switch (state) {
case SIRDEV_STATE_DONGLE_RESET:
sirdev_set_dtr_rts(dev, TRUE, FALSE);
delay = 20;
state = GIRBIL_STATE_WAIT1_RESET;
break;
case GIRBIL_STATE_WAIT1_RESET:
sirdev_set_dtr_rts(dev, FALSE, TRUE);
delay = 20;
state = GIRBIL_STATE_WAIT2_RESET;
break;
case GIRBIL_STATE_WAIT2_RESET:
sirdev_raw_write(dev, &control, 1);
delay = 20;
state = GIRBIL_STATE_WAIT3_RESET;
break;
case GIRBIL_STATE_WAIT3_RESET:
sirdev_set_dtr_rts(dev, TRUE, TRUE);
dev->speed = 9600;
break;
default:
IRDA_ERROR("%s(), undefined state %d\n", __func__, state);
ret = -1;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
static int tekram_reset(struct sir_dev *dev)
{
/* Clear DTR, Set RTS */
sirdev_set_dtr_rts(dev, FALSE, TRUE);
/* Should sleep 1 ms */
msleep(1);
/* Set DTR, Set RTS */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
/* Wait at least 50 us */
udelay(75);
dev->speed = 9600;
return 0;
}
static int tekram_close(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
/* */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
return 0;
}
static int toim3232_close(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
/* Power off dongle */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
return 0;
}
static int old_belkin_close(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
sirdev_set_dtr_rts(dev, FALSE, FALSE);
return 0;
}
static int girbil_close(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
/* Power off dongle */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
return 0;
}
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);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(10));
/* Go back to normal mode */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(10));
dev->speed = 9600; /* That's the dongle-default */
return 0;
}
static int tekram_reset(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
sirdev_set_dtr_rts(dev, FALSE, TRUE);
msleep(1);
sirdev_set_dtr_rts(dev, TRUE, TRUE);
udelay(75);
dev->speed = 9600;
return 0;
}
static int mcp2120_close(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __func__);
/* Power off dongle */
/* reset and inhibit mcp2120 */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
// sirdev_set_dtr_rts(dev, FALSE, FALSE);
return 0;
}
static int tekram_reset(struct sir_dev *dev)
{
IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
/* Clear DTR, Set RTS */
sirdev_set_dtr_rts(dev, FALSE, TRUE);
/* Should sleep 1 ms */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(MSECS_TO_JIFFIES(1));
/* Set DTR, Set RTS */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
/* Wait at least 50 us */
udelay(75);
dev->speed = 9600;
return 0;
}
static int toim3232_reset(struct sir_dev *dev)
{
/* Switch off both DTR and RTS to switch off dongle */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
/* Should sleep a while. This might be evil doing it this way.*/
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(50));
/* Set DTR, Set RTS (data mode) */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
/* Wait at least 10 ms for power to stabilize again */
set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(10));
/* Speed should now be 9600 */
dev->speed = 9600;
return 0;
}
/*
* 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 sir_dev *dev, unsigned speed)
{
int ret = 0;
int i = 0;
IRDA_DEBUG(4, "%s(), speed=%d (was %d)\n", __FUNCTION__,
speed, dev->speed);
/* dongle was already resetted from irda_request state machine,
* we are in known state (dongle default)
*/
/*
* 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]) {
dev->speed = speed;
break;
}
/* Set RTS low for 10 us */
sirdev_set_dtr_rts(dev, TRUE, FALSE);
udelay(MIN_DELAY);
/* Set RTS high for 10 us */
sirdev_set_dtr_rts(dev, TRUE, TRUE);
udelay(MIN_DELAY);
}
/* Check if life is sweet... */
if (i >= MAX_SPEEDS) {
actisys_reset(dev);
ret = -EINVAL; /* This should not happen */
}
/* Basta lavoro, on se casse d'ici... */
return ret;
}
static int mcp2120_reset(struct sir_dev *dev)
{
unsigned state = dev->fsm.substate;
unsigned delay = 0;
int ret = 0;
IRDA_DEBUG(2, "%s()\n", __func__);
switch (state) {
case SIRDEV_STATE_DONGLE_RESET:
;
/* Reset dongle by setting RTS*/
sirdev_set_dtr_rts(dev, TRUE, TRUE);
state = MCP2120_STATE_WAIT1_RESET;
delay = 50;
break;
case MCP2120_STATE_WAIT1_RESET:
;
/* clear RTS and wait for at least 30 ms. */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
state = MCP2120_STATE_WAIT2_RESET;
delay = 50;
break;
case MCP2120_STATE_WAIT2_RESET:
;
/* Go back to normal mode */
sirdev_set_dtr_rts(dev, FALSE, FALSE);
break;
default:
IRDA_ERROR("%s(), undefined state %d\n", __func__, state);
ret = -EINVAL;
break;
}
dev->fsm.substate = state;
return (delay > 0) ? delay : ret;
}
static int tekram_open(struct sir_dev *dev)
{
struct qos_info *qos = &dev->qos;
sirdev_set_dtr_rts(dev, TRUE, TRUE);
qos->baud_rate.bits &= IR_9600|IR_19200|IR_38400|IR_57600|IR_115200;
qos->min_turn_time.bits = 0x01; /* Needs at least 10 ms */
irda_qos_bits_to_value(qos);
/* irda thread waits 50 msec for power settling */
return 0;
}
static int esi_open(struct sir_dev *dev)
{
struct qos_info *qos = &dev->qos;
/* Power up and set dongle to 9600 baud */
sirdev_set_dtr_rts(dev, FALSE, TRUE);
qos->baud_rate.bits &= IR_9600|IR_19200|IR_115200;
qos->min_turn_time.bits = 0x01; /* Needs at least 10 ms */
irda_qos_bits_to_value(qos);
/* irda thread waits 50 msec for power settling */
return 0;
}
static int esi_open(struct sir_dev *dev)
{
struct qos_info *qos = &dev->qos;
sirdev_set_dtr_rts(dev, FALSE, TRUE);
qos->baud_rate.bits &= IR_9600|IR_19200|IR_115200;
qos->min_turn_time.bits = 0x01;
irda_qos_bits_to_value(qos);
return 0;
}
