diff options
| author | Ping-Ke Shih <pkshih@realtek.com> | 2022-05-03 07:54:03 +0800 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2022-05-03 08:32:02 +0300 |
| commit | fb8177d729f2c1f772128441adc80962d7e6ee85 (patch) | |
| tree | fb0d1ad88f80d666e7ae55318c475f65d296c426 /drivers/net/wireless/realtek/rtw89/rtw8852c_rfk.c | |
| parent | 76599a8d0b7d23b990d03dc5a0ceb450afd18391 (diff) | |
rtw89: 8852c: rfk: add LCK
LCK is short fro LC Tank calibration. Do this calibration once driver
loads RF parameters table. Since the characteristic can be changed by
temperature, we do this calibration again if difference of thermal value
is over a threshold.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220502235408.15052-4-pkshih@realtek.com
Diffstat (limited to 'drivers/net/wireless/realtek/rtw89/rtw8852c_rfk.c')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw89/rtw8852c_rfk.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852c_rfk.c b/drivers/net/wireless/realtek/rtw89/rtw8852c_rfk.c index 4245a2c5f9d6..ce08b2dcf545 100644 --- a/drivers/net/wireless/realtek/rtw89/rtw8852c_rfk.c +++ b/drivers/net/wireless/realtek/rtw89/rtw8852c_rfk.c @@ -632,6 +632,69 @@ static void _rxbb_bw(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy, } } +static void _lck_keep_thermal(struct rtw89_dev *rtwdev) +{ + struct rtw89_lck_info *lck = &rtwdev->lck; + int path; + + for (path = 0; path < rtwdev->chip->rf_path_num; path++) { + lck->thermal[path] = + ewma_thermal_read(&rtwdev->phystat.avg_thermal[path]); + rtw89_debug(rtwdev, RTW89_DBG_RFK_TRACK, + "[LCK] path=%d thermal=0x%x", path, lck->thermal[path]); + } +} + +static void _lck(struct rtw89_dev *rtwdev) +{ + u32 tmp18[2]; + int path = rtwdev->dbcc_en ? 2 : 1; + int i; + + rtw89_debug(rtwdev, RTW89_DBG_RFK_TRACK, "[LCK] DO LCK\n"); + + tmp18[0] = rtw89_read_rf(rtwdev, RF_PATH_A, RR_CFGCH, RFREG_MASK); + tmp18[1] = rtw89_read_rf(rtwdev, RF_PATH_B, RR_CFGCH, RFREG_MASK); + + for (i = 0; i < path; i++) { + rtw89_write_rf(rtwdev, i, RR_LCK_TRG, RR_LCK_TRGSEL, 0x1); + rtw89_write_rf(rtwdev, i, RR_CFGCH, RFREG_MASK, tmp18[i]); + rtw89_write_rf(rtwdev, i, RR_LCK_TRG, RR_LCK_TRGSEL, 0x0); + } + + _lck_keep_thermal(rtwdev); +} + +#define RTW8852C_LCK_TH 8 + +void rtw8852c_lck_track(struct rtw89_dev *rtwdev) +{ + struct rtw89_lck_info *lck = &rtwdev->lck; + u8 cur_thermal; + int delta; + int path; + + for (path = 0; path < rtwdev->chip->rf_path_num; path++) { + cur_thermal = + ewma_thermal_read(&rtwdev->phystat.avg_thermal[path]); + delta = abs((int)cur_thermal - lck->thermal[path]); + + rtw89_debug(rtwdev, RTW89_DBG_RFK_TRACK, + "[LCK] path=%d current thermal=0x%x delta=0x%x\n", + path, cur_thermal, delta); + + if (delta >= RTW8852C_LCK_TH) { + _lck(rtwdev); + return; + } + } +} + +void rtw8852c_lck_init(struct rtw89_dev *rtwdev) +{ + _lck_keep_thermal(rtwdev); +} + static void rtw8852c_ctrl_bw_ch(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy, u8 central_ch, enum rtw89_band band, |