wifi: rtw89: phy: ignore special data from BB parameter file

BB parameter file is a list of tuple {addr, val} with conditional hardware
version. However, tuples within a condition can't be empty, so insert a
special dummy tuple for this case. Then, ignore this tuple when writing.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240105064407.36750-1-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/core.h

@@ -32,6 +32,7 @@ extern const struct ieee80211_ops rtw89_ops;
 #define MASKDWORD 0xffffffff
 #define RFREG_MASK 0xfffff
 #define INV_RF_DATA 0xffffffff
+#define BYPASS_CR_DATA 0xbabecafe
 
 #define RTW89_TRACK_WORK_PERIOD	round_jiffies_relative(HZ * 2)
 #define RTW89_FORBID_BA_TIMER round_jiffies_relative(HZ * 4)

drivers/net/wireless/realtek/rtw89/phy.c

@@ -905,6 +905,8 @@ static void rtw89_phy_config_bb_reg(struct rtw89_dev *rtwdev,
 		udelay(5);
 	else if (reg->addr == 0xf9)
 		udelay(1);
+	else if (reg->data == BYPASS_CR_DATA)
+		rtw89_debug(rtwdev, RTW89_DBG_PHY_TRACK, "Bypass CR 0x%x\n", reg->addr);
 	else
 		rtw89_phy_write32(rtwdev, reg->addr, reg->data);
 }