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V4L/DVB (4882): budget-ci IR: make debounce logic conditional

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Change the debounce logic so that it is not used at all unless the
debounce parameter has been set. This makes for a much "snappier" remote
for most users as there is no timeout to wait for (the debounce logic has
a 350ms timer for the next repeat, but with the RC5 protocol, one event
per ~110ms is possible)

Signed-off-by: David Hardeman <david@hardeman.nu>
Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
David Hardeman 2006-12-02 21:16:06 -02:00 committed by Mauro Carvalho Chehab
parent b5471a27b4
commit 59236d46da
1 changed files with 21 additions and 18 deletions
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39
drivers/media/dvb/ttpci/budget-ci.c
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@ -159,27 +159,32 @@ static void msp430_ir_interrupt(unsigned long data)
if (budget_ci->ir.rc5_device != IR_DEVICE_ANY && budget_ci->ir.rc5_device != device)
return;
/* Are we still waiting for a keyup event while this is a new key? */
if ((ir_key != dev->repeat_key || toggle != prev_toggle) && del_timer(&dev->timer))
ir_input_nokey(dev, &budget_ci->ir.state);
prev_toggle = toggle;
/* Ignore repeated key sequences if requested */
if (ir_key == dev->repeat_key && bounces > 0 && timer_pending(&dev->timer)) {
if (toggle == prev_toggle && ir_key == dev->repeat_key &&
bounces > 0 && timer_pending(&dev->timer)) {
if (ir_debug)
printk("budget_ci: debounce logic ignored IR command\n");
bounces--;
return;
}
prev_toggle = toggle;
/* New keypress? */
if (!timer_pending(&dev->timer))
/* Are we still waiting for a keyup event? */
if (del_timer(&dev->timer))
ir_input_nokey(dev, &budget_ci->ir.state);
/* Generate keypress */
if (ir_debug)
printk("budget_ci: generating keypress 0x%02x\n", ir_key);
ir_input_keydown(dev, &budget_ci->ir.state, ir_key, (ir_key & (command << 8)));
/* Do we want to delay the keyup event? */
if (debounce) {
bounces = debounce;
/* Prepare a keyup event sometime in the future */
mod_timer(&dev->timer, jiffies + msecs_to_jiffies(IR_REPEAT_TIMEOUT));
/* Generate a new or repeated keypress */
ir_input_keydown(dev, &budget_ci->ir.state, ir_key, ((device << 8) | command));
mod_timer(&dev->timer, jiffies + msecs_to_jiffies(IR_REPEAT_TIMEOUT));
} else {
ir_input_nokey(dev, &budget_ci->ir.state);
}
}
static void msp430_ir_debounce(unsigned long data)
@ -297,11 +302,9 @@ static int msp430_ir_init(struct budget_ci *budget_ci)
break;
}
/* initialise the key-up timeout handler */
/* initialise the key-up debounce timeout handler */
input_dev->timer.function = msp430_ir_keyup;
input_dev->timer.data = (unsigned long) &budget_ci->ir;
input_dev->rep[REP_DELAY] = 1;
input_dev->rep[REP_PERIOD] = 1;
error = input_register_device(input_dev);
if (error) {