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wifi: rtw89: 8852bx: support different SAR configs by antenna

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Calculate difference of SAR configs between RF path A and RF path B.
And then, based on the calculated result, set the TX power reference
CR (control register). Finally, declare to support SAR by antenna in
8852b/8852bt chip info.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20250326020643.14487-13-pkshih@realtek.com
This commit is contained in:
Zong-Zhe Yang 2025-03-26 10:06:43 +08:00 committed by Ping-Ke Shih
parent 7b51b39368
commit 28b921020b
3 changed files with 26 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/realtek/rtw89/rtw8852b.c
View File

@ -853,7 +853,7 @@ const struct rtw89_chip_info rtw8852b_chip_info = {
.support_unii4 = true,
.support_ant_gain = true,
.support_tas = false,
.support_sar_by_ant = false,
.support_sar_by_ant = true,
.ul_tb_waveform_ctrl = true,
.ul_tb_pwr_diff = false,
.rx_freq_frome_ie = true,

24
drivers/net/wireless/realtek/rtw89/rtw8852b_common.c
View File

@ -8,6 +8,7 @@
#include "phy.h"
#include "reg.h"
#include "rtw8852b_common.h"
#include "sar.h"
#include "util.h"
static const struct rtw89_reg3_def rtw8852bx_pmac_ht20_mcs7_tbl[] = {
@ -1234,6 +1235,7 @@ static u32 rtw8852bx_bb_cal_txpwr_ref(struct rtw89_dev *rtwdev,
u32_encode_bits(ref, B_DPD_REF);
}
/* @pwr_ofst (unit: 1/8 dBm): power of path A minus power of path B */
static void rtw8852bx_set_txpwr_ref(struct rtw89_dev *rtwdev,
enum rtw89_phy_idx phy_idx, s16 pwr_ofst)
{
@ -1336,6 +1338,27 @@ static void rtw8852bx_set_tx_shape(struct rtw89_dev *rtwdev,
tx_shape_ofdm);
}
static s16 rtw8852bx_get_txpwr_sar_diff(struct rtw89_dev *rtwdev,
const struct rtw89_chan *chan)
{
struct rtw89_sar_parm sar_parm = {
.center_freq = chan->freq,
.force_path = true,
};
s16 sar_bb_a, sar_bb_b;
s8 sar_mac;
sar_parm.path = RF_PATH_A;
sar_mac = rtw89_query_sar(rtwdev, &sar_parm);
sar_bb_a = rtw89_phy_txpwr_mac_to_bb(rtwdev, sar_mac);
sar_parm.path = RF_PATH_B;
sar_mac = rtw89_query_sar(rtwdev, &sar_parm);
sar_bb_b = rtw89_phy_txpwr_mac_to_bb(rtwdev, sar_mac);
return sar_bb_a - sar_bb_b;
}
static void rtw8852bx_set_txpwr_diff(struct rtw89_dev *rtwdev,
const struct rtw89_chan *chan,
enum rtw89_phy_idx phy_idx)
@ -1343,6 +1366,7 @@ static void rtw8852bx_set_txpwr_diff(struct rtw89_dev *rtwdev,
s16 pwr_ofst;
pwr_ofst = rtw89_phy_ant_gain_pwr_offset(rtwdev, chan);
pwr_ofst += rtw8852bx_get_txpwr_sar_diff(rtwdev, chan);
rtw8852bx_set_txpwr_ref(rtwdev, phy_idx, pwr_ofst);
}

2
drivers/net/wireless/realtek/rtw89/rtw8852bt.c
View File

@ -786,7 +786,7 @@ const struct rtw89_chip_info rtw8852bt_chip_info = {
.support_unii4 = true,
.support_ant_gain = true,
.support_tas = false,
.support_sar_by_ant = false,
.support_sar_by_ant = true,
.ul_tb_waveform_ctrl = true,
.ul_tb_pwr_diff = false,
.rx_freq_frome_ie = true,