From: Ping-Ke Shih <pkshih@realtek.com>
To: <linux-wireless@vger.kernel.org>
Cc: <timlee@realtek.com>
Subject: [PATCH rtw-next 1/2] wifi: rtw89: enable low-latency power-save optimization for RTL8852B/RTL8852BT
Date: Tue, 3 Nov 2026 15:52:54 +0800 [thread overview]
Message-ID: <20261103075255.56487-2-pkshih@realtek.com> (raw)
In-Reply-To: <20261103075255.56487-1-pkshih@realtek.com>
From: Chin-Yen Lee <timlee@realtek.com>
The low-latency power-save optimization (LPS) was originally
introduced specifically for RTL8852A to improve interactive
application performance by exiting power-save during packet
bursts.
To extend this feature to RTL8852B and RTL8852BT, introduce
a new flag "support_low_latency_lps" in chip info instead of
hardcoding chip ID checks. Enable this capability for RTL8852A,
RTL8852B, and RTL8852BT while explicitly disabling it for other
supported chips.
Signed-off-by: Chin-Yen Lee <timlee@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
drivers/net/wireless/realtek/rtw89/core.c | 2 +-
drivers/net/wireless/realtek/rtw89/core.h | 1 +
drivers/net/wireless/realtek/rtw89/rtw8851b.c | 1 +
drivers/net/wireless/realtek/rtw89/rtw8852a.c | 1 +
drivers/net/wireless/realtek/rtw89/rtw8852b.c | 1 +
drivers/net/wireless/realtek/rtw89/rtw8852bt.c | 1 +
drivers/net/wireless/realtek/rtw89/rtw8852c.c | 1 +
drivers/net/wireless/realtek/rtw89/rtw8922a.c | 1 +
drivers/net/wireless/realtek/rtw89/rtw8922d.c | 1 +
9 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c
index 58ee5efc3b5e..bfa31d365bef 100644
--- a/drivers/net/wireless/realtek/rtw89/core.c
+++ b/drivers/net/wireless/realtek/rtw89/core.c
@@ -3006,7 +3006,7 @@ static bool rtw89_core_proto_stats_can_lps(struct rtw89_dev *rtwdev,
struct rtw89_vif *rtwvif,
enum rtw89_tfc_interval interval)
{
- if (rtwdev->chip->chip_id != RTL8852A)
+ if (!rtwdev->chip->support_low_latency_lps)
return true;
if (rtwvif->burst_active)
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index 0d893b992a4a..cce2c2e48080 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -5837,6 +5837,7 @@ struct rtw89_chip_info {
bool support_sar_by_ant;
bool support_noise;
bool support_fw_cmd_ofld;
+ bool support_low_latency_lps;
bool ul_tb_waveform_ctrl;
bool ul_tb_pwr_diff;
bool rx_freq_from_ie;
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8851b.c b/drivers/net/wireless/realtek/rtw89/rtw8851b.c
index 272f4f4e1fb9..a7facfe96884 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8851b.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8851b.c
@@ -2647,6 +2647,7 @@ const struct rtw89_chip_info rtw8851b_chip_info = {
.support_sar_by_ant = false,
.support_noise = false,
.support_fw_cmd_ofld = false,
+ .support_low_latency_lps = false,
.ul_tb_waveform_ctrl = true,
.ul_tb_pwr_diff = false,
.rx_freq_from_ie = true,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852a.c b/drivers/net/wireless/realtek/rtw89/rtw8852a.c
index 5207df4f9cd5..3b5e3c178440 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852a.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852a.c
@@ -2418,6 +2418,7 @@ const struct rtw89_chip_info rtw8852a_chip_info = {
.support_sar_by_ant = false,
.support_noise = true,
.support_fw_cmd_ofld = false,
+ .support_low_latency_lps = true,
.ul_tb_waveform_ctrl = false,
.ul_tb_pwr_diff = false,
.rx_freq_from_ie = true,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852b.c b/drivers/net/wireless/realtek/rtw89/rtw8852b.c
index d19388b86aca..138f499af677 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852b.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852b.c
@@ -1025,6 +1025,7 @@ const struct rtw89_chip_info rtw8852b_chip_info = {
.support_sar_by_ant = true,
.support_noise = false,
.support_fw_cmd_ofld = false,
+ .support_low_latency_lps = true,
.ul_tb_waveform_ctrl = true,
.ul_tb_pwr_diff = false,
.rx_freq_from_ie = true,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852bt.c b/drivers/net/wireless/realtek/rtw89/rtw8852bt.c
index 23ad02d1fcd4..7306ae7db096 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852bt.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852bt.c
@@ -866,6 +866,7 @@ const struct rtw89_chip_info rtw8852bt_chip_info = {
.support_sar_by_ant = true,
.support_noise = false,
.support_fw_cmd_ofld = false,
+ .support_low_latency_lps = true,
.ul_tb_waveform_ctrl = true,
.ul_tb_pwr_diff = false,
.rx_freq_from_ie = true,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852c.c b/drivers/net/wireless/realtek/rtw89/rtw8852c.c
index e556ba0c14a7..bdcce2e94f99 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852c.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852c.c
@@ -3222,6 +3222,7 @@ const struct rtw89_chip_info rtw8852c_chip_info = {
.support_sar_by_ant = true,
.support_noise = false,
.support_fw_cmd_ofld = true,
+ .support_low_latency_lps = false,
.ul_tb_waveform_ctrl = false,
.ul_tb_pwr_diff = true,
.rx_freq_from_ie = false,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8922a.c b/drivers/net/wireless/realtek/rtw89/rtw8922a.c
index e48300287697..a3b5da979768 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8922a.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8922a.c
@@ -3270,6 +3270,7 @@ const struct rtw89_chip_info rtw8922a_chip_info = {
.support_sar_by_ant = true,
.support_noise = false,
.support_fw_cmd_ofld = false,
+ .support_low_latency_lps = false,
.ul_tb_waveform_ctrl = false,
.ul_tb_pwr_diff = false,
.rx_freq_from_ie = false,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8922d.c b/drivers/net/wireless/realtek/rtw89/rtw8922d.c
index bdf9bcf2cf22..43d9df619260 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8922d.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8922d.c
@@ -3791,6 +3791,7 @@ const struct rtw89_chip_info rtw8922d_chip_info = {
.support_sar_by_ant = true,
.support_noise = false,
.support_fw_cmd_ofld = false,
+ .support_low_latency_lps = false,
.ul_tb_waveform_ctrl = false,
.ul_tb_pwr_diff = false,
.rx_freq_from_ie = false,
--
2.25.1
next prev parent reply other threads:[~2026-11-03 7:53 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-03 7:52 [PATCH rtw-next 0/2] wifi: rtw89: improve latency and tolerance for power-save Ping-Ke Shih
2026-11-03 7:52 ` Ping-Ke Shih [this message]
2026-11-03 7:52 ` [PATCH rtw-next 2/2] wifi: rtw89: avoid premature power save entry for buffered traffic Ping-Ke Shih
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