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rtw88: 8723d: Add LC calibration

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LC calibration is done by hardware circuit. Driver sets the LCK bit to kick
start, and then poll the bit to check if it's done.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200512102621.5148-2-yhchuang@realtek.com
This commit is contained in:
Ping-Ke Shih 2020-05-12 18:26:13 +08:00 committed by Kalle Valo
parent b2fe11f077
commit f71eb7f603
3 changed files with 35 additions and 0 deletions
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1
drivers/net/wireless/realtek/rtw88/main.h
View File

@ -11,6 +11,7 @@
#include <linux/average.h>
#include <linux/bitops.h>
#include <linux/bitfield.h>
#include <linux/iopoll.h>
#include <linux/interrupt.h>
#include "util.h"

31
drivers/net/wireless/realtek/rtw88/rtw8723d.c
View File

@ -64,6 +64,34 @@ static const struct rtw_hw_reg rtw8723d_txagc[] = {
#define WLAN_LTR_CTRL1 0xCB004010
#define WLAN_LTR_CTRL2 0x01233425
static void rtw8723d_lck(struct rtw_dev *rtwdev)
{
u32 lc_cal;
u8 val_ctx, rf_val;
int ret;
val_ctx = rtw_read8(rtwdev, REG_CTX);
if ((val_ctx & BIT_MASK_CTX_TYPE) != 0)
rtw_write8(rtwdev, REG_CTX, val_ctx & ~BIT_MASK_CTX_TYPE);
else
rtw_write8(rtwdev, REG_TXPAUSE, 0xFF);
lc_cal = rtw_read_rf(rtwdev, RF_PATH_A, RF_CFGCH, RFREG_MASK);
rtw_write_rf(rtwdev, RF_PATH_A, RF_CFGCH, RFREG_MASK, lc_cal | BIT_LCK);
ret = read_poll_timeout(rtw_read_rf, rf_val, rf_val != 0x1,
10000, 1000000, false,
rtwdev, RF_PATH_A, RF_CFGCH, BIT_LCK);
if (ret)
rtw_warn(rtwdev, "failed to poll LCK status bit\n");
rtw_write_rf(rtwdev, RF_PATH_A, RF_CFGCH, RFREG_MASK, lc_cal);
if ((val_ctx & BIT_MASK_CTX_TYPE) != 0)
rtw_write8(rtwdev, REG_CTX, val_ctx);
else
rtw_write8(rtwdev, REG_TXPAUSE, 0x00);
}
static void rtw8723d_phy_set_param(struct rtw_dev *rtwdev)
{
u8 xtal_cap;
@ -125,6 +153,9 @@ static void rtw8723d_phy_set_param(struct rtw_dev *rtwdev)
rtw_phy_init(rtwdev);
rtw_write16_set(rtwdev, REG_TXDMA_OFFSET_CHK, BIT_DROP_DATA_EN);
rtw8723d_lck(rtwdev);
rtw_write32_mask(rtwdev, REG_OFDM0_XAAGC1, MASKBYTE0, 0x50);
rtw_write32_mask(rtwdev, REG_OFDM0_XAAGC1, MASKBYTE0, 0x20);
}

3
drivers/net/wireless/realtek/rtw88/rtw8723d.h
View File

@ -78,6 +78,7 @@ struct rtw8723d_efuse {
#define RFCFGCH_BW_20M (BIT(11) | BIT(10))
#define RFCFGCH_BW_40M BIT(10)
#define BIT_MASK_RFMOD BIT(0)
#define BIT_LCK BIT(15)
#define REG_PSDFN 0x0808
#define REG_ANALOG_P4 0x088c
@ -115,6 +116,8 @@ struct rtw8723d_efuse {
#define REG_OFDM_FA_RSTD_11N 0x0d00
#define BIT_MASK_OFDM_FA_RST1 BIT(27)
#define BIT_MASK_OFDM_FA_KEEP1 BIT(31)
#define REG_CTX 0x0d03
#define BIT_MASK_CTX_TYPE GENMASK(6, 4)
#define REG_OFDM1_CFOTRK 0x0d2c
#define BIT_EN_CFOTRK BIT(28)
#define REG_OFDM1_CSI1 0x0d40