diff options
Diffstat (limited to 'drivers/net/wireless/rtl818x/rtl8180_sa2400.c')
| -rw-r--r-- | drivers/net/wireless/rtl818x/rtl8180_sa2400.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/drivers/net/wireless/rtl818x/rtl8180_sa2400.c b/drivers/net/wireless/rtl818x/rtl8180_sa2400.c index cea4e0ccb92..d064fcc5ec0 100644 --- a/drivers/net/wireless/rtl818x/rtl8180_sa2400.c +++ b/drivers/net/wireless/rtl818x/rtl8180_sa2400.c @@ -76,6 +76,31 @@ static void sa2400_write_phy_antenna(struct ieee80211_hw *dev, short chan) } +static u8 sa2400_rf_rssi_map[] = { + 0x64, 0x64, 0x63, 0x62, 0x61, 0x60, 0x5f, 0x5e, + 0x5d, 0x5c, 0x5b, 0x5a, 0x57, 0x54, 0x52, 0x50, + 0x4e, 0x4c, 0x4a, 0x48, 0x46, 0x44, 0x41, 0x3f, + 0x3c, 0x3a, 0x37, 0x36, 0x36, 0x1c, 0x1c, 0x1b, + 0x1b, 0x1a, 0x1a, 0x19, 0x19, 0x18, 0x18, 0x17, + 0x17, 0x16, 0x16, 0x15, 0x15, 0x14, 0x14, 0x13, + 0x13, 0x12, 0x12, 0x11, 0x11, 0x10, 0x10, 0x0f, + 0x0f, 0x0e, 0x0e, 0x0d, 0x0d, 0x0c, 0x0c, 0x0b, + 0x0b, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x07, + 0x07, 0x06, 0x06, 0x05, 0x04, 0x03, 0x02, +}; + +static u8 sa2400_rf_calc_rssi(u8 agc, u8 sq) +{ + if (sq == 0x80) + return 1; + + if (sq > 78) + return 32; + + /* TODO: recalc sa2400_rf_rssi_map to avoid mult / div */ + return 65 * sa2400_rf_rssi_map[sq] / 100; +} + static void sa2400_rf_set_channel(struct ieee80211_hw *dev, struct ieee80211_conf *conf) { @@ -198,5 +223,6 @@ const struct rtl818x_rf_ops sa2400_rf_ops = { .name = "Philips", .init = sa2400_rf_init, .stop = sa2400_rf_stop, - .set_chan = sa2400_rf_set_channel + .set_chan = sa2400_rf_set_channel, + .calc_rssi = sa2400_rf_calc_rssi, }; |