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wifi: rtw89: 8851b: rfk: add AACK

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Automatic amplitude control calibration (AACK) is the calibration to ensure
the oscillator is biased for a constant output amplitude. We do this
calibration if card does power on.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230424065242.17477-3-pkshih@realtek.com
This commit is contained in:
Ping-Ke Shih
2023-04-24 14:52:39 +08:00
committed by Kalle Valo
parent 2a59fe291f
commit 27d5559fd1
3 changed files with 49 additions and 0 deletions
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6
drivers/net/wireless/realtek/rtw89/reg.h
View File

@@ -3782,15 +3782,21 @@
#define RR_LOGEN 0xa3
#define RR_LOGEN_RPT GENMASK(19, 16)
#define RR_SX 0xaf
#define RR_IBD 0xc9
#define RR_IBD_VAL GENMASK(4, 0)
#define RR_LDO 0xb1
#define RR_LDO_SEL GENMASK(8, 6)
#define RR_VCO 0xb2
#define RR_VCO_SEL GENMASK(9, 8)
#define RR_VCI 0xb3
#define RR_VCI_ON BIT(7)
#define RR_LPF 0xb7
#define RR_LPF_BUSY BIT(8)
#define RR_XTALX2 0xb8
#define RR_MALSEL 0xbe
#define RR_SYNFB 0xc5
#define RR_SYNFB_LK BIT(15)
#define RR_AACK 0xca
#define RR_LCKST 0xcf
#define RR_LCKST_BIN BIT(0)
#define RR_LCK_TRG 0xd3

42
drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.c
View File

@@ -17,6 +17,48 @@ static u8 _kpath(struct rtw89_dev *rtwdev, enum rtw89_phy_idx phy_idx)
return RF_A;
}
void rtw8851b_aack(struct rtw89_dev *rtwdev)
{
u32 tmp05, ib[4];
u32 tmp;
int ret;
int rek;
int i;
rtw89_debug(rtwdev, RTW89_DBG_RFK, "[LCK]DO AACK\n");
tmp05 = rtw89_read_rf(rtwdev, RF_PATH_A, RR_RSV1, RFREG_MASK);
rtw89_write_rf(rtwdev, RF_PATH_A, RR_MOD, RR_MOD_MASK, 0x3);
rtw89_write_rf(rtwdev, RF_PATH_A, RR_RSV1, RFREG_MASK, 0x0);
for (rek = 0; rek < 4; rek++) {
rtw89_write_rf(rtwdev, RF_PATH_A, RR_AACK, RFREG_MASK, 0x8201e);
rtw89_write_rf(rtwdev, RF_PATH_A, RR_AACK, RFREG_MASK, 0x8201f);
fsleep(100);
ret = read_poll_timeout_atomic(rtw89_read_rf, tmp, tmp,
1, 1000, false,
rtwdev, RF_PATH_A, 0xd0, BIT(16));
if (ret)
rtw89_warn(rtwdev, "[LCK]AACK timeout\n");
rtw89_write_rf(rtwdev, RF_PATH_A, RR_VCI, RR_VCI_ON, 0x1);
for (i = 0; i < 4; i++) {
rtw89_write_rf(rtwdev, RF_PATH_A, RR_VCO, RR_VCO_SEL, i);
ib[i] = rtw89_read_rf(rtwdev, RF_PATH_A, RR_IBD, RR_IBD_VAL);
}
rtw89_write_rf(rtwdev, RF_PATH_A, RR_VCI, RR_VCI_ON, 0x0);
if (ib[0] != 0 && ib[1] != 0 && ib[2] != 0 && ib[3] != 0)
break;
}
if (rek != 0)
rtw89_debug(rtwdev, RTW89_DBG_RFK, "[LCK]AACK rek = %d\n", rek);
rtw89_write_rf(rtwdev, RF_PATH_A, RR_RSV1, RFREG_MASK, tmp05);
}
static void _bw_setting(struct rtw89_dev *rtwdev, enum rtw89_rf_path path,
enum rtw89_bandwidth bw, bool dav)
{

1
drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.h
View File

@@ -7,6 +7,7 @@
#include "core.h"
void rtw8851b_aack(struct rtw89_dev *rtwdev);
void rtw8851b_set_channel_rf(struct rtw89_dev *rtwdev,
const struct rtw89_chan *chan,
enum rtw89_phy_idx phy_idx);