[PATCH rtw-next v6 1/3] wifi: rtw88: rtw8822c: Use bitfield macros for DAC IQ sampling

Define proper GENMASK constants for the In-phase (I) and Quadrature
(Q) components of the DAC IQ data register in the header file.
Replace manual bit shifting, masking, and rtw_read32_mask() with
standard rtw_read32() and the FIELD_GET() macro to improve code
readability.

Signed-off-by: Arsenii Pashchenko <[email protected]>
---
 drivers/net/wireless/realtek/rtw88/rtw8822c.c | 18 +++++++++---------
 drivers/net/wireless/realtek/rtw88/rtw8822c.h |  3 +++
 2 files changed, 12 insertions(+), 9 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.c b/drivers/net/wireless/realtek/rtw88/rtw8822c.c
index 244c80264..137544649 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8822c.c
+++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.c
@@ -291,9 +291,9 @@ static void rtw8822c_dac_cal_iq_sample(struct rtw_dev *rtwdev, u32 *iv, u32 *qv)
 
 	while (i < DACK_SN_8822C && cnt < 10000) {
 		cnt++;
-		temp = rtw_read32_mask(rtwdev, 0x2dbc, 0x3fffff);
-		iv[i] = (temp & 0x3ff000) >> 12;
-		qv[i] = temp & 0x3ff;
+		temp = rtw_read32(rtwdev, 0x2dbc);
+		iv[i] = FIELD_GET(RTW8822C_DAC_IV_MASK, temp);
+		qv[i] = FIELD_GET(RTW8822C_DAC_QV_MASK, temp);
 
 		if (rtw8822c_dac_iq_check(rtwdev, iv[i]) &&
 		    rtw8822c_dac_iq_check(rtwdev, qv[i]))
@@ -344,12 +344,12 @@ static void rtw8822c_dac_cal_iq_search(struct rtw_dev *rtwdev,
 		rtw8822c_dac_iq_sort(rtwdev, iv, qv);
 
 		if (i_delta > 5 || q_delta > 5) {
-			temp = rtw_read32_mask(rtwdev, 0x2dbc, 0x3fffff);
-			iv[0] = (temp & 0x3ff000) >> 12;
-			qv[0] = temp & 0x3ff;
-			temp = rtw_read32_mask(rtwdev, 0x2dbc, 0x3fffff);
-			iv[DACK_SN_8822C - 1] = (temp & 0x3ff000) >> 12;
-			qv[DACK_SN_8822C - 1] = temp & 0x3ff;
+			temp = rtw_read32(rtwdev, 0x2dbc);
+			iv[0] = FIELD_GET(RTW8822C_DAC_IV_MASK, temp);
+			qv[0] = FIELD_GET(RTW8822C_DAC_QV_MASK, temp);
+			temp = rtw_read32(rtwdev, 0x2dbc);
+			iv[DACK_SN_8822C - 1] = FIELD_GET(RTW8822C_DAC_IV_MASK, temp);
+			qv[DACK_SN_8822C - 1] = FIELD_GET(RTW8822C_DAC_QV_MASK, temp);
 		} else {
 			break;
 		}
diff --git a/drivers/net/wireless/realtek/rtw88/rtw8822c.h b/drivers/net/wireless/realtek/rtw88/rtw8822c.h
index fc62b67a1..7bea99614 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8822c.h
+++ b/drivers/net/wireless/realtek/rtw88/rtw8822c.h
@@ -141,6 +141,9 @@ const struct rtw_table name ## _tbl = {			\
 #define DACK_RF_8822C		1
 #define DACK_SN_8822C		100
 
+#define RTW8822C_DAC_IV_MASK GENMASK(21, 12)
+#define RTW8822C_DAC_QV_MASK GENMASK(9, 0)
+
 /* phy status page0 */
 #define GET_PHY_STAT_P0_PWDB_A(phy_stat)                                       \
 	le32_get_bits(*((__le32 *)(phy_stat) + 0x00), GENMASK(15, 8))
-- 
2.55.0