2013.10.01. 20:03 keltezéssel, Gabor Juhos írta:
> The Ralink DPO_RT5572_LinuxSTA_2.6.1.3_20121022
> reference driver uses different RSSI threshold
> and VGC adjustment values for the RT3572 and for
> the 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: Gabor Juhos <juhosg@xxxxxxxxxxx>
> ---
> drivers/net/wireless/rt2x00/rt2800lib.c | 18 +++++++++++++-----
> 1 file changed, 13 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/net/wireless/rt2x00/rt2800lib.c b/drivers/net/wireless/rt2x00/rt2800lib.c
> index 25c550a..0dd15b2 100644
> --- a/drivers/net/wireless/rt2x00/rt2800lib.c
> +++ b/drivers/net/wireless/rt2x00/rt2800lib.c
> @@ -4465,17 +4465,25 @@ 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) && qual->rssi > -65)
> + if ((rt2x00_rt(rt2x00dev, RT3572) ||
> + rt2x00_rt(rt2x00dev, RT3593)) && qual->rssi > -65) {
> + if (rt2x00dev->curr_band == IEEE80211_BAND_2GHZ)
> + vgc += 0x20;
> + else
> + vgc += 0x10;
> + } else if (rt2x00_rt(rt2x00dev, RT5592) && qual->rssi > -65) {
> vgc += 0x20;
> - else if (qual->rssi > -80)
> + } else if (qual->rssi > -80) {
> vgc += 0x10;
> + }
Erm, this seems broken even in the original code. If the rssi value is between
-65 and -80, vgc will be increased by 0x10 regardless of the actual chipset.
John, please skip this patch set. I will send a modified version.
-Gabor
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