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Add helper functions for rssi_half_db rssi_dbm conversion and rssi_correction lookup table:

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and use them for priv->rssi_correction/priv->last_auto_fpga_lbt_th initialization in openwifi_dev_probe()
This commit is contained in:
Xianjun Jiao 2022-03-28 15:23:53 +02:00
parent 7b2f8bdfff
commit cb81054882
1 changed files with 44 additions and 5 deletions
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49
driver/sdr.c
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@ -72,6 +72,9 @@ u32 gen_mpdu_crc(u8 *data_in, u32 num_bytes);
u8 gen_mpdu_delim_crc(u16 m);
static int openwifi_set_antenna(struct ieee80211_hw *dev, u32 tx_ant, u32 rx_ant);
static int openwifi_get_antenna(struct ieee80211_hw *dev, u32 *tx_ant, u32 *rx_ant);
int rssi_half_db_to_rssi_dbm(int rssi_half_db, int rssi_correction);
int rssi_dbm_to_rssi_half_db(int rssi_dbm, int rssi_correction);
int rssi_correction_lookup_table(u32 freq_MHz);
#include "sdrctl_intf.c"
#include "sysfs_intf.c"
@ -139,9 +142,32 @@ void openwifi_rfkill_exit(struct ieee80211_hw *hw)
}
//----------------rfkill end-----------------------------------
//static void ad9361_rf_init(void);
//static void ad9361_rf_stop(void);
//static void ad9361_rf_calc_rssi(void);
inline int rssi_dbm_to_rssi_half_db(int rssi_dbm, int rssi_correction)
{
return ((rssi_correction+rssi_dbm)<<1);
}
inline int rssi_correction_lookup_table(u32 freq_MHz)
{
int rssi_correction;
if (freq_MHz<2412) {
rssi_correction = 153;
} else if (freq_MHz<=2484) {
rssi_correction = 153;
} else if (freq_MHz<5160) {
rssi_correction = 153;
} else if (freq_MHz<=5240) {
rssi_correction = 145;
} else if (freq_MHz<=5320) {
rssi_correction = 148;
} else {
rssi_correction = 148;
}
return rssi_correction;
}
static void ad9361_rf_set_channel(struct ieee80211_hw *dev,
struct ieee80211_conf *conf)
{
@ -353,6 +379,19 @@ static int rx_dma_setup(struct ieee80211_hw *dev){
return(0);
}
inline int rssi_half_db_to_rssi_dbm(int rssi_half_db, int rssi_correction)
{
int rssi_db, rssi_dbm;
rssi_db = (rssi_half_db>>1);
rssi_dbm = rssi_db - rssi_correction;
rssi_dbm = (rssi_dbm < (-128)? (-128) : rssi_dbm);
return rssi_dbm;
}
static irqreturn_t openwifi_rx_interrupt(int irq, void *dev_id)
{
struct ieee80211_hw *dev = dev_id;
@ -1898,8 +1937,8 @@ static int openwifi_dev_probe(struct platform_device *pdev)
// if (test_mode&2)
// TX_OFFSET_TUNING_ENABLE = false;
priv->last_auto_fpga_lbt_th = 134;//just to avoid uninitialized
priv->rssi_correction = 43;//this will be set in real-time by _rf_set_channel()
priv->rssi_correction = rssi_correction_lookup_table(5220);//5220MHz. this will be set in real-time by _rf_set_channel()
priv->last_auto_fpga_lbt_th = rssi_dbm_to_rssi_half_db(-78, priv->rssi_correction);//-78dBm. a magic value. just to avoid uninitialized
//priv->rf_bw = 20000000; // Signal quality issue! NOT use for now. 20MHz or 40MHz. 40MHz need ddc/duc. 20MHz works in bypass mode
priv->rf_bw = 40000000; // 20MHz or 40MHz. 40MHz need ddc/duc. 20MHz works in bypass mode