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brcmfmac: fallback to mimo_bw_cap for older firmwares

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In order to support the driver behaviour introduced by:

   commit d0575a5a703978c43e25128421158c78534ba100
   Author: Daniel Kim <dekim@broadcom.com>
   Date:   Wed Mar 12 18:12:14 2014 -0700

       brcmfmac: Enable 40MHz bandwidth in 2GHz band and OBSS scanning

in devices that do not support bwcap firmware command a fallback
is added.

Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arend van Spriel 2014-03-20 10:18:03 +01:00 committed by John W. Linville
parent 4d1a4f16c9
commit 67b3bd4e65
1 changed files with 18 additions and 8 deletions
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26
drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
View File

@ -4930,16 +4930,27 @@ static void init_vif_event(struct brcmf_cfg80211_vif_event *event)
mutex_init(&event->vif_event_lock);
}
static int brcmf_set_bwcap(struct brcmf_if *ifp, u32 band, u32 bw_cap)
static int brcmf_enable_bw40_2g(struct brcmf_if *ifp)
{
struct brcmf_fil_bwcap_le band_bwcap;
u32 val;
int err;
band_bwcap.band = cpu_to_le32(band);
band_bwcap.bw_cap = cpu_to_le32(bw_cap);
err = brcmf_fil_iovar_data_set(ifp, "bw_cap", &band_bwcap,
sizeof(band_bwcap));
/* verify support for bw_cap command */
val = WLC_BAND_5G;
err = brcmf_fil_iovar_int_get(ifp, "bw_cap", &val);
if (!err) {
/* only set 2G bandwidth using bw_cap command */
band_bwcap.band = cpu_to_le32(WLC_BAND_2G);
band_bwcap.bw_cap = cpu_to_le32(WLC_BW_40MHZ_BIT);
err = brcmf_fil_iovar_data_set(ifp, "bw_cap", &band_bwcap,
sizeof(band_bwcap));
} else {
brcmf_dbg(INFO, "fallback to mimo_bw_cap\n");
val = WLC_N_BW_40ALL;
err = brcmf_fil_iovar_int_set(ifp, "mimo_bw_cap", val);
}
return err;
}
@ -5005,11 +5016,10 @@ struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct brcmf_pub *drvr,
*/
if (wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap.cap &
IEEE80211_HT_CAP_SUP_WIDTH_20_40) {
err = brcmf_set_bwcap(ifp, WLC_BAND_2G, WLC_BW_CAP_40MHZ);
if (!err) {
err = brcmf_enable_bw40_2g(ifp);
if (!err)
err = brcmf_fil_iovar_int_set(ifp, "obss_coex",
BRCMF_OBSS_COEX_AUTO);
}
}
err = brcmf_fil_iovar_int_set(ifp, "tdls_enable", 1);