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@xxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtw89/reg.h | 6 +++
.../net/wireless/realtek/rtw89/rtw8851b_rfk.c | 42 +++++++++++++++++++
.../net/wireless/realtek/rtw89/rtw8851b_rfk.h | 1 +
3 files changed, 49 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw89/reg.h b/drivers/net/wireless/realtek/rtw89/reg.h
index 266e4231b5f34..c840a96b79f23 100644
--- a/drivers/net/wireless/realtek/rtw89/reg.h
+++ b/drivers/net/wireless/realtek/rtw89/reg.h
@@ -3776,15 +3776,21 @@
#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
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.c b/drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.c
index 9276e852bb051..471ed1a634765 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.c
@@ -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)
{
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.h b/drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.h
index c81eb98dcf928..cd38d9ed1ff39 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.h
+++ b/drivers/net/wireless/realtek/rtw89/rtw8851b_rfk.h
@@ -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);
--
2.25.1
