diff options
| author | Yan-Hsuan Chuang <yhchuang@realtek.com> | 2019-09-09 10:16:07 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-09-13 18:03:18 +0300 |
| commit | 1ac3294bf75e8a15122277ba3fd3ef58e4647a4a (patch) | |
| tree | 2a3918770d0bd889d8396a8d422693ebc6afb13b | |
| parent | bc61ae96437fb178ca27714967fd8acf1cd91336 (diff) | |
| download | linux-1ac3294bf75e8a15122277ba3fd3ef58e4647a4a.tar.xz | |
rtw88: 8822c: add FW IQK support
Add support for doing IQK in firmware
Ideally the RF component's I/Q vectors should be orthogonal,
but usually they are not. So we need to calibrate for the RF
components, ex. PA/LNA, ADC/DAC.
And if the I/Q vectors are more orthogonal, the mixed signal
will have less deviation. This helps with those rates with
higher modulation (MCS8-9), because they have more strict
EVM/SNR requirement. Also the better of the quality of the
signal, the longer it can propagate, and the better throughput
performance we can get.
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/rtw8822c.c | 16 | ||||
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/rtw8822c.h | 2 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.c b/drivers/net/wireless/realtek/rtw88/rtw8822c.c index e11bbc37120a..176ca5fafe95 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8822c.c +++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.c @@ -1876,6 +1876,22 @@ static void rtw8822c_false_alarm_statistics(struct rtw_dev *rtwdev) static void rtw8822c_do_iqk(struct rtw_dev *rtwdev) { + struct rtw_iqk_para para = {0}; + u8 iqk_chk; + int counter; + + para.clear = 1; + rtw_fw_do_iqk(rtwdev, ¶); + + for (counter = 0; counter < 300; counter++) { + iqk_chk = rtw_read8(rtwdev, REG_RPT_CIP); + if (iqk_chk == 0xaa) + break; + msleep(20); + } + rtw_write8(rtwdev, REG_IQKSTAT, 0x0); + + rtw_dbg(rtwdev, RTW_DBG_RFK, "iqk counter=%d\n", counter); } /* for coex */ diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.h b/drivers/net/wireless/realtek/rtw88/rtw8822c.h index 5ee1de41504d..14a8894fd081 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8822c.h +++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.h @@ -176,6 +176,7 @@ struct rtw8822c_efuse { #define REG_TXF7 0x1ab0 #define REG_CCK_SOURCE 0x1abc #define BIT_NBI_EN BIT(30) +#define REG_IQKSTAT 0x1b10 #define REG_TXANT 0x1c28 #define REG_ENCCK 0x1c3c #define BIT_CCK_BLK_EN BIT(1) @@ -197,6 +198,7 @@ struct rtw8822c_efuse { #define REG_OFDM_FACNT3 0x2d0c #define REG_OFDM_FACNT4 0x2d10 #define REG_OFDM_FACNT5 0x2d20 +#define REG_RPT_CIP 0x2d9c #define REG_OFDM_TXCNT 0x2de0 #define REG_ORITXCODE2 0x4100 #define REG_3WIRE2 0x410c |