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Commit 1ac3294b authored by Yan-Hsuan Chuang's avatar Yan-Hsuan Chuang Committed by Kalle Valo
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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: default avatarYan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
parent bc61ae96

drivers/net/wireless/realtek/rtw88/rtw8822c.c

+16 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/net/wireless/realtek/rtw88/rtw8822c.h

+2 −0
Original line number Diff line number Diff line
@@ -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