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wl18xx: disable MCS_13 for wl18xx PG 1.0 

There are some problems with MCS_13 in PG 1.0 hardware.  So we disable
it when PG 1.0 is detected.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
This commit is contained in:
Luciano Coelho 2012-05-10 12:14:03 +03:00
parent 4afc37a0c1
commit 7ae25da396
1 changed files with 18 additions and 0 deletions
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18
drivers/net/wireless/ti/wl18xx/main.c
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@ -588,6 +588,9 @@ static int wl18xx_identify_chip(struct wl1271 *wl)
WLCORE_QUIRK_FWLOG_NOT_IMPLEMENTED |
WLCORE_QUIRK_RX_BLOCKSIZE_ALIGN;
/* PG 1.0 has some problems with MCS_13, so disable it */
wl->ht_cap.mcs.rx_mask[1] &= ~BIT(5);
/* TODO: need to blocksize alignment for RX/TX separately? */
break;
default:
@ -914,6 +917,10 @@ static void wl18xx_set_rx_csum(struct wl1271 *wl,
skb->ip_summed = CHECKSUM_UNNECESSARY;
}
/*
* TODO: instead of having these two functions to get the rate mask,
* we should modify the wlvif->rate_set instead
*/
static u32 wl18xx_sta_get_ap_rate_mask(struct wl1271 *wl,
struct wl12xx_vif *wlvif)
{
@ -940,6 +947,17 @@ static u32 wl18xx_ap_get_mimo_wide_rate_mask(struct wl1271 *wl,
return CONF_TX_RATE_USE_WIDE_CHAN;
} else {
wl1271_debug(DEBUG_ACX, "using MIMO rate mask");
/*
* PG 1.0 has some problems with MCS_13, so disable it
*
* TODO: instead of hacking this in here, we should
* make it more general and change a bit in the
* wlvif->rate_set instead.
*/
if (wl->chip.id == CHIP_ID_185x_PG10)
return CONF_TX_MIMO_RATES & ~CONF_HW_BIT_RATE_MCS_13;
return CONF_TX_MIMO_RATES;
}
}