openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
This commit is contained in:
Yan-Hsuan Chuang 2019-09-09 15:16:07 +08:00 committed by Kalle Valo
parent bc61ae9643
commit 1ac3294bf7
2 changed files with 18 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/net/wireless/realtek/rtw88/rtw8822c.c
View File

@ -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, &para);
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 */

2
drivers/net/wireless/realtek/rtw88/rtw8822c.h
View File

@ -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