diff options
| author | Ping-Ke Shih <pkshih@realtek.com> | 2020-05-12 18:26:13 +0800 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2020-05-13 18:48:41 +0300 |
| commit | f71eb7f603170bf8742c53c9fb72a64df04cb6e4 (patch) | |
| tree | 38ed3f4aca21c463de33fa8749aa1ef5e45495af /drivers/net | |
| parent | b2fe11f0777311a764e47e2f9437809b4673b7b1 (diff) | |
rtw88: 8723d: Add LC calibration
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
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/main.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/rtw8723d.c | 31 | ||||
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/rtw8723d.h | 3 |
3 files changed, 35 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/main.h b/drivers/net/wireless/realtek/rtw88/main.h index e0365a70c6f7..c5046986f9af 100644 --- a/drivers/net/wireless/realtek/rtw88/main.h +++ b/drivers/net/wireless/realtek/rtw88/main.h @@ -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" diff --git a/drivers/net/wireless/realtek/rtw88/rtw8723d.c b/drivers/net/wireless/realtek/rtw88/rtw8723d.c index 92c742d1ce6d..0f5ddd41b019 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8723d.c +++ b/drivers/net/wireless/realtek/rtw88/rtw8723d.c @@ -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); } diff --git a/drivers/net/wireless/realtek/rtw88/rtw8723d.h b/drivers/net/wireless/realtek/rtw88/rtw8723d.h index ac66f672bec8..6a7d58992df5 100644 --- a/drivers/net/wireless/realtek/rtw88/rtw8723d.h +++ b/drivers/net/wireless/realtek/rtw88/rtw8723d.h @@ -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 |