TX antenna diversity is a mechanism to select a proper antenna from two
antenna for single one hardware PHY chip. It chooses antenna with better
EVM or RSSI, and use GPIO to control SPDT to switch selected antenna.
RFE type from efuse is used to define if a module can support TX antenna
diversity when (type % 3) is 2.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230418012820.5139-3-pkshih@realtek.com
{
struct ieee80211_hw *hw = rtwdev->hw;
struct rtw89_efuse *efuse = &rtwdev->efuse;
+ struct rtw89_hal *hal = &rtwdev->hal;
int ret;
int tx_headroom = IEEE80211_HT_CTL_LEN;
BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_P2P_GO);
- hw->wiphy->available_antennas_tx = BIT(rtwdev->chip->rf_path_num) - 1;
- hw->wiphy->available_antennas_rx = BIT(rtwdev->chip->rf_path_num) - 1;
+ if (hal->ant_diversity) {
+ hw->wiphy->available_antennas_tx = 0x3;
+ hw->wiphy->available_antennas_rx = 0x3;
+ } else {
+ hw->wiphy->available_antennas_tx = BIT(rtwdev->chip->rf_path_num) - 1;
+ hw->wiphy->available_antennas_rx = BIT(rtwdev->chip->rf_path_num) - 1;
+ }
hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS |
WIPHY_FLAG_TDLS_EXTERNAL_SETUP |
u8 tx_nss;
u8 rx_nss;
bool tx_path_diversity;
+ bool ant_diversity;
+ bool ant_diversity_fixed;
bool support_cckpd;
bool support_igi;
atomic_t roc_entity_idx;
int rtw89_mac_setup_phycap(struct rtw89_dev *rtwdev)
{
+ struct rtw89_efuse *efuse = &rtwdev->efuse;
struct rtw89_hal *hal = &rtwdev->hal;
const struct rtw89_chip_info *chip = rtwdev->chip;
struct rtw89_mac_c2h_info c2h_info = {0};
hal->tx_path_diversity = true;
}
+ if (chip->rf_path_num == 1) {
+ hal->antenna_tx = RF_A;
+ hal->antenna_rx = RF_A;
+ if ((efuse->rfe_type % 3) == 2)
+ hal->ant_diversity = true;
+ }
+
rtw89_debug(rtwdev, RTW89_DBG_FW,
"phycap hal/phy/chip: tx_nss=0x%x/0x%x/0x%x rx_nss=0x%x/0x%x/0x%x\n",
hal->tx_nss, tx_nss, chip->tx_nss,
"ant num/bitmap: tx=%d/0x%x rx=%d/0x%x\n",
tx_ant, hal->antenna_tx, rx_ant, hal->antenna_rx);
rtw89_debug(rtwdev, RTW89_DBG_FW, "TX path diversity=%d\n", hal->tx_path_diversity);
+ rtw89_debug(rtwdev, RTW89_DBG_FW, "Antenna diversity=%d\n", hal->ant_diversity);
return 0;
}
struct rtw89_dev *rtwdev = hw->priv;
struct rtw89_hal *hal = &rtwdev->hal;
- if (rx_ant != hw->wiphy->available_antennas_rx && rx_ant != hal->antenna_rx)
+ if (hal->ant_diversity) {
+ if (tx_ant != rx_ant || hweight32(tx_ant) != 1)
+ return -EINVAL;
+ } else if (rx_ant != hw->wiphy->available_antennas_rx && rx_ant != hal->antenna_rx) {
return -EINVAL;
+ }
mutex_lock(&rtwdev->mutex);
hal->antenna_tx = tx_ant;
hal->antenna_rx = rx_ant;
hal->tx_path_diversity = false;
+ hal->ant_diversity_fixed = true;
mutex_unlock(&rtwdev->mutex);
return 0;