Commit b3f09304 authored by Felix Fietkau's avatar Felix Fietkau
Browse files

mt76: mt76x02: fix beacon timer drift adjustment 



Check the count before incrementing it to match vendor code behavior.
This defers the adjustment by one more tick, which should improve accuracy

Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent a6982fcd

drivers/net/wireless/mediatek/mt76/mt76x02_mmio.c

+7 −7
Original line number Diff line number Diff line
@@ -79,24 +79,24 @@ mt76x02_resync_beacon_timer(struct mt76x02_dev *dev) 
	 * Beacon timer drifts by 1us every tick, the timer is configured

	 * in 1/16 TU (64us) units.

	 */

	if (dev->tbtt_count < 62)

	if (dev->tbtt_count < 63)

		return;



	if (dev->tbtt_count >= 64) {

		dev->tbtt_count = 0;

		return;

	}



	/*

	 * The updated beacon interval takes effect after two TBTT, because

	 * at this point the original interval has already been loaded into

	 * the next TBTT_TIMER value

	 */

	if (dev->tbtt_count == 62)

	if (dev->tbtt_count == 63)

		timer_val -= 1;



	mt76_rmw_field(dev, MT_BEACON_TIME_CFG,

		       MT_BEACON_TIME_CFG_INTVAL, timer_val);



	if (dev->tbtt_count >= 64) {

		dev->tbtt_count = 0;

		return;

	}

}



static void mt76x02_pre_tbtt_tasklet(unsigned long arg)