[PATCH rtw-next v2 01/14] wifi: rtw89: 8922de: add low latency quirk for Valve device

[Ping-Ke Shih <pkshih@realtek.com>]

From: Hsiao-Yung Chen <henchy.chen@realtek.com>

Add RTW89_QUIRK_LOW_LATENCY to the rtw89_quirks enum for
latency-sensitive platforms. When set, the RA report handler skips
computing max_agg_wait and leaves it at its default of zero, which
makes rtw89_core_txq_agg_wait() bail out early, so frames are
dispatched immediately instead of being held to build an aggregate,
trading throughput for lower latency.

Apply the quirk for the Valve device (SSID 0x1e44:0x1400) on the
8922DE, and add RTW89_CUSTID_VALVE for that customer ID.

Signed-off-by: Hsiao-Yung Chen <henchy.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
---
 drivers/net/wireless/realtek/rtw89/core.h      | 2 ++
 drivers/net/wireless/realtek/rtw89/phy.c       | 3 ++-
 drivers/net/wireless/realtek/rtw89/rtw8922de.c | 8 +++++++-
 3 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index 2b21d969ece7..b1a0103aaf0c 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -6465,6 +6465,7 @@ enum rtw89_quirks {
 	RTW89_QUIRK_THERMAL_PROT_110C,
 	RTW89_QUIRK_HW_INFO_SYSFS,
 	RTW89_QUIRK_DISABLE_2GHZ,
+	RTW89_QUIRK_LOW_LATENCY,
 
 	NUM_OF_RTW89_QUIRKS,
 };
@@ -6479,6 +6480,7 @@ enum rtw89_custid {
 	RTW89_CUSTID_AMD = 6,
 	RTW89_CUSTID_FUJITSU = 7,
 	RTW89_CUSTID_DELL = 8,
+	RTW89_CUSTID_VALVE, /* driver only */
 };
 
 enum rtw89_pkt_drop_sel {
diff --git a/drivers/net/wireless/realtek/rtw89/phy.c b/drivers/net/wireless/realtek/rtw89/phy.c
index c78107e92206..ebf6ecf08c35 100644
--- a/drivers/net/wireless/realtek/rtw89/phy.c
+++ b/drivers/net/wireless/realtek/rtw89/phy.c
@@ -3345,7 +3345,8 @@ static void __rtw89_phy_c2h_ra_rpt_iter(struct rtw89_sta_link *rtwsta_link,
 		*changed = true;
 	}
 
-	rtwsta_link->max_agg_wait = link_sta->agg.max_rc_amsdu_len / 1500 - 1;
+	if (!test_bit(RTW89_QUIRK_LOW_LATENCY, rtwdev->quirks))
+		rtwsta_link->max_agg_wait = link_sta->agg.max_rc_amsdu_len / 1500 - 1;
 }
 
 static void rtw89_phy_c2h_ra_rpt_iter(void *data, struct ieee80211_sta *sta)
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8922de.c b/drivers/net/wireless/realtek/rtw89/rtw8922de.c
index a71e41f28544..b8dbb680c3bd 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8922de.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8922de.c
@@ -9,6 +9,12 @@
 #include "reg.h"
 #include "rtw8922d.h"
 
+static const struct rtw89_pci_ssid_quirk rtw8922de_pci_ssid_quirks[] = {
+	{RTW89_PCI_SSID(PCI_VENDOR_ID_REALTEK, 0x895D, 0x1E44, 0x1400, VALVE),
+		.bitmap = BIT(RTW89_QUIRK_LOW_LATENCY)},
+	{},
+};
+
 static const struct rtw89_pci_info rtw8922d_pci_info = {
 	.gen_def		= &rtw89_pci_gen_be,
 	.isr_def		= &rtw89_pci_isr_be_v1,
@@ -66,7 +72,7 @@ static const struct rtw89_pci_info rtw8922d_pci_info = {
 	.disable_intr		= rtw89_pci_disable_intr_v3,
 	.recognize_intrs	= rtw89_pci_recognize_intrs_v3,
 
-	.ssid_quirks		= NULL,
+	.ssid_quirks		= rtw8922de_pci_ssid_quirks,
 };
 
 static const struct rtw89_driver_info rtw89_8922de_vs_info = {
-- 
2.25.1