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Commit e25aa82a authored by Gabor Juhos's avatar Gabor Juhos Committed by John W. Linville
Browse files

rt2x00: rt2800lib: fix VGC adjustment for RT3572 and RT3593 



The Ralink DPO_RT5572_LinuxSTA_2.6.1.3_20121022
reference driver uses different RSSI threshold
and VGC adjustment values for the RT3572 and
RT3593 chipsets.

Update the rt2800_link_tuner function to use the
same values. Also change the comment in the function
to make it more generic.

References:

  RT35xx_ChipAGCAdjust function in chips/rt35xx.c
  RSSI_FOR_MID_LOW_SENSIBILITY constant in include/chip/rtmp_phy.h
  RT3593_R66_MID_LOW_SENS_GET macro in include/chip/rt3593.h
  RT3593_R66_NON_MID_LOW_SEMS_GET macro in include/chips/rt3593.h

Signed-off-by: default avatarGabor Juhos <juhosg@openwrt.org>
Acked-by: default avatarStanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 0beb1bbf

drivers/net/wireless/rt2x00/rt2800lib.c

+20 −5
Original line number Diff line number Diff line
@@ -4471,19 +4471,34 @@ void rt2800_link_tuner(struct rt2x00_dev *rt2x00dev, struct link_qual *qual, 


	if (rt2x00_rt_rev(rt2x00dev, RT2860, REV_RT2860C))

		return;

	/*

	 * When RSSI is better then -80 increase VGC level with 0x10, except

	 * for rt5592 chip.



	/* When RSSI is better than a certain threshold, increase VGC

	 * with a chip specific value in order to improve the balance

	 * between sensibility and noise isolation.

	 */



	vgc = rt2800_get_default_vgc(rt2x00dev);



	if (rt2x00_rt(rt2x00dev, RT5592)) {

	switch (rt2x00dev->chip.rt) {

	case RT3572:

	case RT3593:

		if (qual->rssi > -65) {

			if (rt2x00dev->curr_band == IEEE80211_BAND_2GHZ)

				vgc += 0x20;

			else

				vgc += 0x10;

		}

		break;



	case RT5592:

		if (qual->rssi > -65)

			vgc += 0x20;

	} else {

		break;



	default:

		if (qual->rssi > -80)

			vgc += 0x10;

		break;

	}



	rt2800_set_vgc(rt2x00dev, qual, vgc);