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Initial AR9485/AR933x 1x1 LNA diversity work.

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* Add the LNA configuration table entries for AR933x/AR9485
* Add a chip-dependent LNA signal level delta in the startup path
* Add a TODO list for the stuff I haven't yet ported over but
  I haven't.

Tested:

* AR9462 with LNA diversity enabled
This commit is contained in:
Adrian Chadd 2013-06-14 03:42:10 +00:00
parent d5aeb77948
commit 0f0eebe793
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=251730
2 changed files with 257 additions and 43 deletions
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298
sys/dev/ath/if_ath_lna_div.c
View File

@ -88,6 +88,7 @@ int
ath_lna_div_attach(struct ath_softc *sc)
{
struct if_ath_ant_comb_state *ss;
HAL_ANT_COMB_CONFIG div_ant_conf;
/* Only do this if diversity is enabled */
if (! ath_hal_hasdivantcomb(sc->sc_ah))
@ -102,6 +103,18 @@ ath_lna_div_attach(struct ath_softc *sc)
return (0);
}
/* Fetch the hardware configuration */
OS_MEMZERO(&div_ant_conf, sizeof(div_ant_conf));
ath_hal_div_comb_conf_get(sc->sc_ah, &div_ant_conf);
/* Figure out what the hardware specific bits should be */
if ((div_ant_conf.antdiv_configgroup == HAL_ANTDIV_CONFIG_GROUP_1) ||
(div_ant_conf.antdiv_configgroup == HAL_ANTDIV_CONFIG_GROUP_2)) {
ss->lna1_lna2_delta = -9;
} else {
ss->lna1_lna2_delta = -3;
}
/* Let's flip this on */
sc->sc_lna_div = ss;
sc->sc_dolnadiv = 1;
@ -458,51 +471,235 @@ ath_select_ant_div_from_quick_scan(struct if_ath_ant_comb_state *antcomb,
}
static void
ath_ant_div_conf_fast_divbias(HAL_ANT_COMB_CONFIG *ant_conf)
ath_ant_adjust_fast_divbias(struct if_ath_ant_comb_state *antcomb,
int alt_ratio, int alt_ant_ratio_th, u_int config_group,
HAL_ANT_COMB_CONFIG *pdiv_ant_conf)
{
/* Adjust the fast_div_bias based on main and alt lna conf */
switch ((ant_conf->main_lna_conf << 4) | ant_conf->alt_lna_conf) {
case (0x01): /* A-B LNA2 */
ant_conf->fast_div_bias = 0x3b;
break;
case (0x02): /* A-B LNA1 */
ant_conf->fast_div_bias = 0x3d;
break;
case (0x03): /* A-B A+B */
ant_conf->fast_div_bias = 0x1;
break;
case (0x10): /* LNA2 A-B */
ant_conf->fast_div_bias = 0x7;
break;
case (0x12): /* LNA2 LNA1 */
ant_conf->fast_div_bias = 0x2;
break;
case (0x13): /* LNA2 A+B */
ant_conf->fast_div_bias = 0x7;
break;
case (0x20): /* LNA1 A-B */
ant_conf->fast_div_bias = 0x6;
break;
case (0x21): /* LNA1 LNA2 */
ant_conf->fast_div_bias = 0x0;
break;
case (0x23): /* LNA1 A+B */
ant_conf->fast_div_bias = 0x6;
break;
case (0x30): /* A+B A-B */
ant_conf->fast_div_bias = 0x1;
break;
case (0x31): /* A+B LNA2 */
ant_conf->fast_div_bias = 0x3b;
break;
case (0x32): /* A+B LNA1 */
ant_conf->fast_div_bias = 0x3d;
break;
default:
break;
if (config_group == HAL_ANTDIV_CONFIG_GROUP_1) {
switch ((pdiv_ant_conf->main_lna_conf << 4)
| pdiv_ant_conf->alt_lna_conf) {
case (0x01): //A-B LNA2
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x02): //A-B LNA1
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x03): //A-B A+B
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x10): //LNA2 A-B
if ((antcomb->scan == 0)
&& (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) {
pdiv_ant_conf->fast_div_bias = 0x3f;
} else {
pdiv_ant_conf->fast_div_bias = 0x1;
}
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x12): //LNA2 LNA1
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x13): //LNA2 A+B
if ((antcomb->scan == 0)
&& (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) {
pdiv_ant_conf->fast_div_bias = 0x3f;
} else {
pdiv_ant_conf->fast_div_bias = 0x1;
}
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x20): //LNA1 A-B
if ((antcomb->scan == 0)
&& (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) {
pdiv_ant_conf->fast_div_bias = 0x3f;
} else {
pdiv_ant_conf->fast_div_bias = 0x1;
}
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x21): //LNA1 LNA2
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x23): //LNA1 A+B
if ((antcomb->scan == 0)
&& (alt_ratio > ATH_ANT_DIV_COMB_ALT_ANT_RATIO)) {
pdiv_ant_conf->fast_div_bias = 0x3f;
} else {
pdiv_ant_conf->fast_div_bias = 0x1;
}
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x30): //A+B A-B
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x31): //A+B LNA2
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x32): //A+B LNA1
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
default:
break;
}
} else if (config_group == HAL_ANTDIV_CONFIG_GROUP_2) {
switch ((pdiv_ant_conf->main_lna_conf << 4)
| pdiv_ant_conf->alt_lna_conf) {
case (0x01): //A-B LNA2
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x02): //A-B LNA1
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x03): //A-B A+B
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x10): //LNA2 A-B
if ((antcomb->scan == 0)
&& (alt_ratio > alt_ant_ratio_th)) {
pdiv_ant_conf->fast_div_bias = 0x1;
} else {
pdiv_ant_conf->fast_div_bias = 0x2;
}
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x12): //LNA2 LNA1
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x13): //LNA2 A+B
if ((antcomb->scan == 0)
&& (alt_ratio > alt_ant_ratio_th)) {
pdiv_ant_conf->fast_div_bias = 0x1;
} else {
pdiv_ant_conf->fast_div_bias = 0x2;
}
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x20): //LNA1 A-B
if ((antcomb->scan == 0)
&& (alt_ratio > alt_ant_ratio_th)) {
pdiv_ant_conf->fast_div_bias = 0x1;
} else {
pdiv_ant_conf->fast_div_bias = 0x2;
}
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x21): //LNA1 LNA2
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x23): //LNA1 A+B
if ((antcomb->scan == 0)
&& (alt_ratio > alt_ant_ratio_th)) {
pdiv_ant_conf->fast_div_bias = 0x1;
} else {
pdiv_ant_conf->fast_div_bias = 0x2;
}
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x30): //A+B A-B
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x31): //A+B LNA2
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
case (0x32): //A+B LNA1
pdiv_ant_conf->fast_div_bias = 0x1;
pdiv_ant_conf->main_gaintb = 0;
pdiv_ant_conf->alt_gaintb = 0;
break;
default:
break;
}
} else { /* DEFAULT_ANTDIV_CONFIG_GROUP */
switch ((pdiv_ant_conf->main_lna_conf << 4) | pdiv_ant_conf->alt_lna_conf) {
case (0x01): //A-B LNA2
pdiv_ant_conf->fast_div_bias = 0x3b;
break;
case (0x02): //A-B LNA1
pdiv_ant_conf->fast_div_bias = 0x3d;
break;
case (0x03): //A-B A+B
pdiv_ant_conf->fast_div_bias = 0x1;
break;
case (0x10): //LNA2 A-B
pdiv_ant_conf->fast_div_bias = 0x7;
break;
case (0x12): //LNA2 LNA1
pdiv_ant_conf->fast_div_bias = 0x2;
break;
case (0x13): //LNA2 A+B
pdiv_ant_conf->fast_div_bias = 0x7;
break;
case (0x20): //LNA1 A-B
pdiv_ant_conf->fast_div_bias = 0x6;
break;
case (0x21): //LNA1 LNA2
pdiv_ant_conf->fast_div_bias = 0x0;
break;
case (0x23): //LNA1 A+B
pdiv_ant_conf->fast_div_bias = 0x6;
break;
case (0x30): //A+B A-B
pdiv_ant_conf->fast_div_bias = 0x1;
break;
case (0x31): //A+B LNA2
pdiv_ant_conf->fast_div_bias = 0x3b;
break;
case (0x32): //A+B LNA1
pdiv_ant_conf->fast_div_bias = 0x3d;
break;
default:
break;
}
}
}
/*
* AR9485/AR933x TODO:
* + Select a ratio based on whether RSSI is low or not; but I need
* to figure out what "low_rssi_th" is sourced from.
* + What's ath_ant_div_comb_alt_check() in the reference driver do?
* + .. and there's likely a bunch of other things to include in this.
*/
/* Antenna diversity and combining */
void
ath_lna_rx_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs,
@ -576,6 +773,15 @@ ath_lna_rx_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs,
}
}
#if 0
DPRINTF(sc, ATH_DEBUG_DIVERSITY,
"%s: total pkt=%d, aggr=%d, short_scan=%d\n",
__func__,
antcomb->total_pkt_count,
!! (rs->rs_moreaggr),
!! (short_scan));
#endif
if (((antcomb->total_pkt_count < ATH_ANT_DIV_COMB_MAX_PKTCOUNT) ||
rs->rs_moreaggr) && !short_scan)
return;
@ -642,7 +848,7 @@ ath_lna_rx_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs,
}
if ((alt_rssi_avg < (main_rssi_avg +
ATH_ANT_DIV_COMB_LNA1_LNA2_DELTA)))
antcomb->lna1_lna2_delta)))
goto div_comb_done;
}
@ -756,7 +962,15 @@ ath_lna_rx_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs,
antcomb->quick_scan_cnt++;
div_comb_done:
#if 0
ath_ant_div_conf_fast_divbias(&div_ant_conf);
#endif
ath_ant_adjust_fast_divbias(antcomb,
alt_ratio,
ATH_ANT_DIV_COMB_ALT_ANT_RATIO,
div_ant_conf.antdiv_configgroup,
&div_ant_conf);
ath_hal_div_comb_conf_set(sc->sc_ah, &div_ant_conf);

2
sys/dev/ath/if_ath_lna_div.h
View File

@ -43,7 +43,6 @@
#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO 30
#define ATH_ANT_DIV_COMB_ALT_ANT_RATIO2 20
#define ATH_ANT_DIV_COMB_LNA1_LNA2_DELTA -3
#define ATH_ANT_DIV_COMB_LNA1_LNA2_SWITCH_DELTA -1
#define ATH_ANT_DIV_COMB_LNA1_DELTA_HI -4
#define ATH_ANT_DIV_COMB_LNA1_DELTA_MID -2
@ -75,6 +74,7 @@ struct if_ath_ant_comb_state {
HAL_BOOL first_ratio;
HAL_BOOL second_ratio;
unsigned long scan_start_time;
int lna1_lna2_delta;
};
extern int ath_lna_div_attach(struct ath_softc *sc);