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brcmfmac: add function converting ieee80211_channel to chanspec 

The firmware carries channel information in a different format
as the provided ieee80211_channel structure. Conversion is needed
when receiving requests from cfg80211 carrying ieee80211_channel
structures. This patch adds a utility function to do that.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
5bit-waveforms
Arend van Spriel 2012-10-22 10:36:22 -07:00 committed by John W. Linville
parent ec5a07d5c4
commit 6e186166ea
1 changed files with 27 additions and 25 deletions
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52
drivers/net/wireless/brcm80211/brcmfmac/wl_cfg80211.c
View File

@ -392,6 +392,31 @@ static u8 brcmf_mw_to_qdbm(u16 mw)
return qdbm;
}
static u16 channel_to_chanspec(struct ieee80211_channel *ch)
{
u16 chanspec;
chanspec = ieee80211_frequency_to_channel(ch->center_freq);
chanspec &= WL_CHANSPEC_CHAN_MASK;
if (ch->band == IEEE80211_BAND_2GHZ)
chanspec |= WL_CHANSPEC_BAND_2G;
else
chanspec |= WL_CHANSPEC_BAND_5G;
if (ch->flags & IEEE80211_CHAN_NO_HT40) {
chanspec |= WL_CHANSPEC_BW_20;
chanspec |= WL_CHANSPEC_CTL_SB_NONE;
} else {
chanspec |= WL_CHANSPEC_BW_40;
if (ch->flags & IEEE80211_CHAN_NO_HT40PLUS)
chanspec |= WL_CHANSPEC_CTL_SB_LOWER;
else
chanspec |= WL_CHANSPEC_CTL_SB_UPPER;
}
return chanspec;
}
static void convert_key_from_CPU(struct brcmf_wsec_key *key,
struct brcmf_wsec_key_le *key_le)
{
@ -701,8 +726,6 @@ static void brcmf_escan_prep(struct brcmf_scan_params_le *params_le,
s32 i;
s32 offset;
u16 chanspec;
u16 channel;
struct ieee80211_channel *req_channel;
char *ptr;
struct brcmf_ssid_le ssid_le;
@ -726,30 +749,9 @@ static void brcmf_escan_prep(struct brcmf_scan_params_le *params_le,
WL_SCAN("### List of channelspecs to scan ### %d\n", n_channels);
if (n_channels > 0) {
for (i = 0; i < n_channels; i++) {
chanspec = 0;
req_channel = request->channels[i];
channel = ieee80211_frequency_to_channel(
req_channel->center_freq);
if (req_channel->band == IEEE80211_BAND_2GHZ)
chanspec |= WL_CHANSPEC_BAND_2G;
else
chanspec |= WL_CHANSPEC_BAND_5G;
if (req_channel->flags & IEEE80211_CHAN_NO_HT40) {
chanspec |= WL_CHANSPEC_BW_20;
chanspec |= WL_CHANSPEC_CTL_SB_NONE;
} else {
chanspec |= WL_CHANSPEC_BW_40;
if (req_channel->flags &
IEEE80211_CHAN_NO_HT40PLUS)
chanspec |= WL_CHANSPEC_CTL_SB_LOWER;
else
chanspec |= WL_CHANSPEC_CTL_SB_UPPER;
}
chanspec |= (channel & WL_CHANSPEC_CHAN_MASK);
chanspec = channel_to_chanspec(request->channels[i]);
WL_SCAN("Chan : %d, Channel spec: %x\n",
channel, chanspec);
request->channels[i]->hw_value, chanspec);
params_le->channel_list[i] = cpu_to_le16(chanspec);
}
} else {