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rt2x00: rt2800lib: fix VGC programming for RT3572 and RT3593 

According to the DPO_RT5572_LinuxSTA_2.6.1.3_20121022
reference driver, programming of the 'BBP 66' register
on the RT3572 and RT3593 chipsets must be done via the
'rt2800_bbp_write_with_rx_chain' function. This ensures
that value is correclty set for all RX chains.

References:
  RT35xx_ChipAGCAdjust and RT35xx_SetAGCInitValue functions
  in chips/rt35xx.c

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Gabor Juhos 2013-10-03 20:00:43 +02:00 committed by John W. Linville
parent 0ffd2a9a44
commit 271f1a4d70
1 changed files with 8 additions and 2 deletions
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10
drivers/net/wireless/rt2x00/rt2800lib.c
View File

@ -4442,11 +4442,17 @@ static inline void rt2800_set_vgc(struct rt2x00_dev *rt2x00dev,
struct link_qual *qual, u8 vgc_level)
{
if (qual->vgc_level != vgc_level) {
if (rt2x00_rt(rt2x00dev, RT5592)) {
if (rt2x00_rt(rt2x00dev, RT3572) ||
rt2x00_rt(rt2x00dev, RT3593)) {
rt2800_bbp_write_with_rx_chain(rt2x00dev, 66,
vgc_level);
} else if (rt2x00_rt(rt2x00dev, RT5592)) {
rt2800_bbp_write(rt2x00dev, 83, qual->rssi > -65 ? 0x4a : 0x7a);
rt2800_bbp_write_with_rx_chain(rt2x00dev, 66, vgc_level);
} else
} else {
rt2800_bbp_write(rt2x00dev, 66, vgc_level);
}
qual->vgc_level = vgc_level;
qual->vgc_level_reg = vgc_level;
}