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[PATCH 1/3] wifi: rtw89: TX power limit/limit_ru consider negative

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From: Zong-Zhe Yang <kevin_yang@xxxxxxxxxxx>

Some chips' RF TX power limit/limit_ru tables start to configure some
negative values. Fix the setting logic to prevent negative values from
polluting fields of others.

Signed-off-by: Zong-Zhe Yang <kevin_yang@xxxxxxxxxxx>
Signed-off-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
---
 drivers/net/wireless/realtek/rtw89/rtw8852a.c | 18 ++++++++++--------
 drivers/net/wireless/realtek/rtw89/rtw8852c.c | 18 ++++++++++--------
 2 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852a.c b/drivers/net/wireless/realtek/rtw89/rtw8852a.c
index 81bd0c4fe21bc..c8cdbc32dcf7f 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852a.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852a.c
@@ -1450,7 +1450,7 @@ static void rtw8852a_set_txpwr_limit(struct rtw89_dev *rtwdev,
 	struct rtw89_txpwr_limit lmt[NTX_NUM_8852A];
 	u32 addr, val;
 	const s8 *ptr;
-	u8 i, j, k;
+	u8 i, j;
 
 	rtw89_debug(rtwdev, RTW89_DBG_TXPWR,
 		    "[TXPWR] set txpwr limit with ch=%d bw=%d\n", ch, bw);
@@ -1461,10 +1461,11 @@ static void rtw8852a_set_txpwr_limit(struct rtw89_dev *rtwdev,
 		for (j = 0; j < __MAC_TXPWR_LMT_PAGE_SIZE; j += 4) {
 			addr = R_AX_PWR_LMT + j + __MAC_TXPWR_LMT_PAGE_SIZE * i;
 			ptr = (s8 *)&lmt[i] + j;
-			val = 0;
 
-			for (k = 0; k < 4; k++)
-				val |= (ptr[k] << (8 * k));
+			val = FIELD_PREP(GENMASK(7, 0), ptr[0]) |
+			      FIELD_PREP(GENMASK(15, 8), ptr[1]) |
+			      FIELD_PREP(GENMASK(23, 16), ptr[2]) |
+			      FIELD_PREP(GENMASK(31, 24), ptr[3]);
 
 			rtw89_mac_txpwr_write32(rtwdev, phy_idx, addr, val);
 		}
@@ -1481,7 +1482,7 @@ static void rtw8852a_set_txpwr_limit_ru(struct rtw89_dev *rtwdev,
 	struct rtw89_txpwr_limit_ru lmt_ru[NTX_NUM_8852A];
 	u32 addr, val;
 	const s8 *ptr;
-	u8 i, j, k;
+	u8 i, j;
 
 	rtw89_debug(rtwdev, RTW89_DBG_TXPWR,
 		    "[TXPWR] set txpwr limit ru with ch=%d bw=%d\n", ch, bw);
@@ -1493,10 +1494,11 @@ static void rtw8852a_set_txpwr_limit_ru(struct rtw89_dev *rtwdev,
 			addr = R_AX_PWR_RU_LMT + j +
 			       __MAC_TXPWR_LMT_RU_PAGE_SIZE * i;
 			ptr = (s8 *)&lmt_ru[i] + j;
-			val = 0;
 
-			for (k = 0; k < 4; k++)
-				val |= (ptr[k] << (8 * k));
+			val = FIELD_PREP(GENMASK(7, 0), ptr[0]) |
+			      FIELD_PREP(GENMASK(15, 8), ptr[1]) |
+			      FIELD_PREP(GENMASK(23, 16), ptr[2]) |
+			      FIELD_PREP(GENMASK(31, 24), ptr[3]);
 
 			rtw89_mac_txpwr_write32(rtwdev, phy_idx, addr, val);
 		}
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852c.c b/drivers/net/wireless/realtek/rtw89/rtw8852c.c
index b697aef2faf2d..7f5d609b31738 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852c.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852c.c
@@ -2100,7 +2100,7 @@ static void rtw8852c_set_txpwr_limit(struct rtw89_dev *rtwdev,
 	struct rtw89_txpwr_limit lmt[NTX_NUM_8852C];
 	u32 addr, val;
 	const s8 *ptr;
-	u8 i, j, k;
+	u8 i, j;
 
 	rtw89_debug(rtwdev, RTW89_DBG_TXPWR,
 		    "[TXPWR] set txpwr limit with ch=%d bw=%d\n", ch, bw);
@@ -2111,10 +2111,11 @@ static void rtw8852c_set_txpwr_limit(struct rtw89_dev *rtwdev,
 		for (j = 0; j < __MAC_TXPWR_LMT_PAGE_SIZE; j += 4) {
 			addr = R_AX_PWR_LMT + j + __MAC_TXPWR_LMT_PAGE_SIZE * i;
 			ptr = (s8 *)&lmt[i] + j;
-			val = 0;
 
-			for (k = 0; k < 4; k++)
-				val |= (ptr[k] << (8 * k));
+			val = FIELD_PREP(GENMASK(7, 0), ptr[0]) |
+			      FIELD_PREP(GENMASK(15, 8), ptr[1]) |
+			      FIELD_PREP(GENMASK(23, 16), ptr[2]) |
+			      FIELD_PREP(GENMASK(31, 24), ptr[3]);
 
 			rtw89_mac_txpwr_write32(rtwdev, phy_idx, addr, val);
 		}
@@ -2131,7 +2132,7 @@ static void rtw8852c_set_txpwr_limit_ru(struct rtw89_dev *rtwdev,
 	struct rtw89_txpwr_limit_ru lmt_ru[NTX_NUM_8852C];
 	u32 addr, val;
 	const s8 *ptr;
-	u8 i, j, k;
+	u8 i, j;
 
 	rtw89_debug(rtwdev, RTW89_DBG_TXPWR,
 		    "[TXPWR] set txpwr limit ru with ch=%d bw=%d\n", ch, bw);
@@ -2143,10 +2144,11 @@ static void rtw8852c_set_txpwr_limit_ru(struct rtw89_dev *rtwdev,
 			addr = R_AX_PWR_RU_LMT + j +
 			       __MAC_TXPWR_LMT_RU_PAGE_SIZE * i;
 			ptr = (s8 *)&lmt_ru[i] + j;
-			val = 0;
 
-			for (k = 0; k < 4; k++)
-				val |= (ptr[k] << (8 * k));
+			val = FIELD_PREP(GENMASK(7, 0), ptr[0]) |
+			      FIELD_PREP(GENMASK(15, 8), ptr[1]) |
+			      FIELD_PREP(GENMASK(23, 16), ptr[2]) |
+			      FIELD_PREP(GENMASK(31, 24), ptr[3]);
 
 			rtw89_mac_txpwr_write32(rtwdev, phy_idx, addr, val);
 		}
-- 
2.25.1




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