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brcmfmac: Add beamforming support. 

Some devices support beamforming. This patch enables tx beamforming
if supported and reports beamforming capabilities per channel if
supported.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Hante Meuleman 2015-11-25 11:32:43 +01:00 committed by Kalle Valo
parent 1119e23edf
commit 7bf65aa9ad
3 changed files with 42 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
View File

@ -5672,7 +5672,8 @@ static __le16 brcmf_get_mcs_map(u32 nchain, enum ieee80211_vht_mcs_support supp)
}
static void brcmf_update_vht_cap(struct ieee80211_supported_band *band,
u32 bw_cap[2], u32 nchain)
u32 bw_cap[2], u32 nchain, u32 txstreams,
u32 txbf_bfe_cap, u32 txbf_bfr_cap)
{
__le16 mcs_map;
@ -5691,6 +5692,25 @@ static void brcmf_update_vht_cap(struct ieee80211_supported_band *band,
mcs_map = brcmf_get_mcs_map(nchain, IEEE80211_VHT_MCS_SUPPORT_0_9);
band->vht_cap.vht_mcs.rx_mcs_map = mcs_map;
band->vht_cap.vht_mcs.tx_mcs_map = mcs_map;
/* Beamforming support information */
if (txbf_bfe_cap & BRCMF_TXBF_SU_BFE_CAP)
band->vht_cap.cap |= IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE;
if (txbf_bfe_cap & BRCMF_TXBF_MU_BFE_CAP)
band->vht_cap.cap |= IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE;
if (txbf_bfr_cap & BRCMF_TXBF_SU_BFR_CAP)
band->vht_cap.cap |= IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE;
if (txbf_bfr_cap & BRCMF_TXBF_MU_BFR_CAP)
band->vht_cap.cap |= IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE;
if ((txbf_bfe_cap || txbf_bfr_cap) && (txstreams > 1)) {
band->vht_cap.cap |=
(2 << IEEE80211_VHT_CAP_BEAMFORMEE_STS_SHIFT);
band->vht_cap.cap |= ((txstreams - 1) <<
IEEE80211_VHT_CAP_SOUNDING_DIMENSIONS_SHIFT);
band->vht_cap.cap |=
IEEE80211_VHT_CAP_VHT_LINK_ADAPTATION_VHT_MRQ_MFB;
}
}
static int brcmf_setup_wiphybands(struct wiphy *wiphy)
@ -5705,6 +5725,9 @@ static int brcmf_setup_wiphybands(struct wiphy *wiphy)
int err;
s32 i;
struct ieee80211_supported_band *band;
u32 txstreams = 0;
u32 txbf_bfe_cap = 0;
u32 txbf_bfr_cap = 0;
(void)brcmf_fil_iovar_int_get(ifp, "vhtmode", &vhtmode);
err = brcmf_fil_iovar_int_get(ifp, "nmode", &nmode);
@ -5733,6 +5756,14 @@ static int brcmf_setup_wiphybands(struct wiphy *wiphy)
return err;
}
if (vhtmode) {
(void)brcmf_fil_iovar_int_get(ifp, "txstreams", &txstreams);
(void)brcmf_fil_iovar_int_get(ifp, "txbf_bfe_cap",
&txbf_bfe_cap);
(void)brcmf_fil_iovar_int_get(ifp, "txbf_bfr_cap",
&txbf_bfr_cap);
}
wiphy = cfg_to_wiphy(cfg);
for (i = 0; i < ARRAY_SIZE(wiphy->bands); i++) {
band = wiphy->bands[i];
@ -5742,7 +5773,8 @@ static int brcmf_setup_wiphybands(struct wiphy *wiphy)
if (nmode)
brcmf_update_ht_cap(band, bw_cap, nchain);
if (vhtmode)
brcmf_update_vht_cap(band, bw_cap, nchain);
brcmf_update_vht_cap(band, bw_cap, nchain, txstreams,
txbf_bfe_cap, txbf_bfr_cap);
}
return 0;

3
drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.c
View File

@ -153,6 +153,9 @@ int brcmf_c_preinit_dcmds(struct brcmf_if *ifp)
goto done;
}
/* Enable tx beamforming, errors can be ignored (not supported) */
(void)brcmf_fil_iovar_int_set(ifp, "txbf", 1);
/* do bus specific preinit here */
err = brcmf_bus_preinit(ifp->drvr->bus_if);
done:

5
drivers/net/wireless/broadcom/brcm80211/brcmfmac/fwil_types.h
View File

@ -121,6 +121,11 @@
#define BRCMF_MAX_ASSOCLIST 128
#define BRCMF_TXBF_SU_BFE_CAP BIT(0)
#define BRCMF_TXBF_MU_BFE_CAP BIT(1)
#define BRCMF_TXBF_SU_BFR_CAP BIT(0)
#define BRCMF_TXBF_MU_BFR_CAP BIT(1)
/* join preference types for join_pref iovar */
enum brcmf_join_pref_types {
BRCMF_JOIN_PREF_RSSI = 1,