Received-SPF: pass (google.com: domain of linux-wireless-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
From:   Baochen Qiang <quic_bqiang@quicinc.com>
To:     <ath11k@lists.infradead.org>
CC:     <linux-wireless@vger.kernel.org>
Subject: [PATCH] wifi: ath11k: Send PME message during wakeup from D3cold
Date:   Mon, 10 Oct 2022 11:32:37 +0800
Message-ID: <20221010033237.415478-1-quic_bqiang@quicinc.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Content-Type: text/plain
Precedence: bulk

We are seeing system stuck on some specific platforms due to
WLAN chip fails to wakeup from D3cold state.

With this flag, firmware will send PME message during wakeup
and this issue is gone.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3

Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
---
 drivers/net/wireless/ath/ath11k/qmi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c
index 84e3abecbdac..145f20a681bd 100644
--- a/drivers/net/wireless/ath/ath11k/qmi.c
+++ b/drivers/net/wireless/ath/ath11k/qmi.c
@@ -19,6 +19,7 @@
 #define SLEEP_CLOCK_SELECT_INTERNAL_BIT	0x02
 #define HOST_CSTATE_BIT			0x04
 #define PLATFORM_CAP_PCIE_GLOBAL_RESET	0x08
+#define PLATFORM_CAP_PCIE_PME_D3COLD	0x10
 
 #define FW_BUILD_ID_MASK "QC_IMAGE_VERSION_STRING="
 
@@ -1752,6 +1753,8 @@ static int ath11k_qmi_host_cap_send(struct ath11k_base *ab)
 	if (ab->hw_params.global_reset)
 		req.nm_modem |= PLATFORM_CAP_PCIE_GLOBAL_RESET;
 
+	req.nm_modem |= PLATFORM_CAP_PCIE_PME_D3COLD;
+
 	ath11k_dbg(ab, ATH11K_DBG_QMI, "qmi host cap request\n");
 
 	ret = qmi_txn_init(&ab->qmi.handle, &txn,

base-commit: 023baf1318ef21442fab3842bf03883bc81223e0
-- 
2.25.1