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rtl8180: improve signal reporting for rtl8185 hardware

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The existing code seemed to be somewhat based on the datasheet, but
varied substantially from the vendor-provided driver.  This mirrors the
handling of the rtl8185 case from that driver, but still neglects the
specifics for the rtl8180 hardware.  Those details are a bit muddled...

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
John W. Linville 2010-07-19 16:35:20 -04:00
parent b603742f49
commit 8b74964c73
1 changed files with 8 additions and 3 deletions
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11
drivers/net/wireless/rtl818x/rtl8180_dev.c
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@ -103,6 +103,7 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
{
struct rtl8180_priv *priv = dev->priv;
unsigned int count = 32;
u8 signal;
while (count--) {
struct rtl8180_rx_desc *entry = &priv->rx_ring[priv->rx_idx];
@ -130,10 +131,14 @@ static void rtl8180_handle_rx(struct ieee80211_hw *dev)
skb_put(skb, flags & 0xFFF);
rx_status.antenna = (flags2 >> 15) & 1;
/* TODO: improve signal/rssi reporting */
rx_status.signal = (flags2 >> 8) & 0x7F;
/* XXX: is this correct? */
rx_status.rate_idx = (flags >> 20) & 0xF;
/* TODO: improve signal/rssi reporting for !rtl8185 */
signal = (flags2 >> 17) & 0x7F;
if (rx_status.rate_idx > 3)
signal = 90 - clamp_t(u8, signal, 25, 90);
else
signal = 95 - clamp_t(u8, signal, 30, 95);
rx_status.signal = signal;
rx_status.freq = dev->conf.channel->center_freq;
rx_status.band = dev->conf.channel->band;
rx_status.mactime = le64_to_cpu(entry->tsft);