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p54: power save management

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This patch implements dynamic power save feature for p54.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Christian Lamparter 2008-12-30 13:48:41 +01:00 committed by John W. Linville
parent 51eed9923d
commit 2b8d4e2eea
2 changed files with 43 additions and 0 deletions
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42
drivers/net/wireless/p54/p54common.c
View file

@ -1765,6 +1765,43 @@ static int p54_set_edcf(struct ieee80211_hw *dev)
return 0;
}
static int p54_set_ps(struct ieee80211_hw *dev)
{
struct p54_common *priv = dev->priv;
struct sk_buff *skb;
struct p54_psm *psm;
u16 mode;
int i;
if (dev->conf.flags & IEEE80211_CONF_PS)
mode = cpu_to_le16(P54_PSM | P54_PSM_DTIM | P54_PSM_MCBC);
else
mode = P54_PSM_CAM;
skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*psm) +
sizeof(struct p54_hdr), P54_CONTROL_TYPE_PSM,
GFP_ATOMIC);
if (!skb)
return -ENOMEM;
psm = (struct p54_psm *)skb_put(skb, sizeof(*psm));
psm->mode = cpu_to_le16(mode);
psm->aid = cpu_to_le16(priv->aid);
for (i = 0; i < ARRAY_SIZE(psm->intervals); i++) {
psm->intervals[i].interval =
cpu_to_le16(dev->conf.listen_interval);
psm->intervals[i].periods = 1;
}
psm->beacon_rssi_skip_max = 60;
psm->rssi_delta_threshold = 0;
psm->nr = 0;
priv->tx(dev, skb);
return 0;
}
static int p54_beacon_tim(struct sk_buff *skb)
{
/*
@ -1957,6 +1994,11 @@ static int p54_config(struct ieee80211_hw *dev, u32 changed)
if (ret)
goto out;
}
if (changed & IEEE80211_CONF_CHANGE_PS) {
ret = p54_set_ps(dev);
if (ret)
goto out;
}
out:
mutex_unlock(&priv->conf_mutex);

1
drivers/net/wireless/p54/p54common.h
View file

@ -534,6 +534,7 @@ struct p54_psm_interval {
__le16 periods;
} __attribute__ ((packed));
#define P54_PSM_CAM 0
#define P54_PSM BIT(0)
#define P54_PSM_DTIM BIT(1)
#define P54_PSM_MCBC BIT(2)