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Commit 3d0f0fa0 authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

Input: atkbd - restore repeat rate when resuming 



Make the AT keyboard driver restore previously set repeat rate
when resuming. Noticed by Linus Torvalds.

Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 184dd275

drivers/input/keyboard/atkbd.c

+60 −43
Original line number Diff line number Diff line
@@ -482,13 +482,7 @@ static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data, 
	return IRQ_HANDLED;

}



/*

 * atkbd_event_work() is used to complete processing of events that

 * can not be processed by input_event() which is often called from

 * interrupt context.

 */



static void atkbd_event_work(void *data)

static int atkbd_set_repeat_rate(struct atkbd *atkbd)

{

	const short period[32] =

		{ 33,  37,  42,  46,  50,  54,  58,  63,  67,  75,  83,  92, 100, 109, 116, 125,
@@ -496,18 +490,32 @@ static void atkbd_event_work(void *data) 
	const short delay[4] =

		{ 250, 500, 750, 1000 };



	struct atkbd *atkbd = data;

	struct input_dev *dev = atkbd->dev;

	unsigned char param[2];

	int i, j;

	unsigned char param;

	int i = 0, j = 0;



	mutex_lock(&atkbd->event_mutex);

	while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])

		i++;

	dev->rep[REP_PERIOD] = period[i];



	while (j < ARRAY_SIZE(period) - 1 && delay[j] < dev->rep[REP_DELAY])

		j++;

	dev->rep[REP_DELAY] = delay[j];



	param = i | (j << 5);

	return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);

}



static int atkbd_set_leds(struct atkbd *atkbd)

{

	struct input_dev *dev = atkbd->dev;

	unsigned char param[2];



	if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask)) {

	param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)

		 | (test_bit(LED_NUML,    dev->led) ? 2 : 0)

		 | (test_bit(LED_CAPSL,   dev->led) ? 4 : 0);

		ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS);

	if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))

		return -1;



	if (atkbd->extra) {

		param[0] = 0;
@@ -516,22 +524,31 @@ static void atkbd_event_work(void *data) 
			 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)

			 | (test_bit(LED_MISC,    dev->led) ? 0x10 : 0)

			 | (test_bit(LED_MUTE,    dev->led) ? 0x20 : 0);

			ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS);

		}

		if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))

			return -1;

	}



	if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask)) {

		i = j = 0;

		while (i < 31 && period[i] < dev->rep[REP_PERIOD])

			i++;

		while (j < 3 && delay[j] < dev->rep[REP_DELAY])

			j++;

		dev->rep[REP_PERIOD] = period[i];

		dev->rep[REP_DELAY] = delay[j];

		param[0] = i | (j << 5);

		ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETREP);

	return 0;

}



/*

 * atkbd_event_work() is used to complete processing of events that

 * can not be processed by input_event() which is often called from

 * interrupt context.

 */



static void atkbd_event_work(void *data)

{

	struct atkbd *atkbd = data;



	mutex_lock(&atkbd->event_mutex);



	if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))

		atkbd_set_leds(atkbd);



	if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))

		atkbd_set_repeat_rate(atkbd);



	mutex_unlock(&atkbd->event_mutex);

}
@@ -975,7 +992,6 @@ static int atkbd_reconnect(struct serio *serio) 
{

	struct atkbd *atkbd = serio_get_drvdata(serio);

	struct serio_driver *drv = serio->drv;

	unsigned char param[1];



	if (!atkbd || !drv) {

		printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
@@ -985,10 +1001,6 @@ static int atkbd_reconnect(struct serio *serio) 
	atkbd_disable(atkbd);



	if (atkbd->write) {

		param[0] = (test_bit(LED_SCROLLL, atkbd->dev->led) ? 1 : 0)

		         | (test_bit(LED_NUML,    atkbd->dev->led) ? 2 : 0)

		         | (test_bit(LED_CAPSL,   atkbd->dev->led) ? 4 : 0);



		if (atkbd_probe(atkbd))

			return -1;

		if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
@@ -996,8 +1008,13 @@ static int atkbd_reconnect(struct serio *serio) 


		atkbd_activate(atkbd);



		if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))

			return -1;

/*

 * Restore repeat rate and LEDs (that were reset by atkbd_activate)

 * to pre-resume state

 */

		if (!atkbd->softrepeat)

			atkbd_set_repeat_rate(atkbd);

		atkbd_set_leds(atkbd);

	}



	atkbd_enable(atkbd);