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Wed, 14 Oct 2026 05:20:39 -0700 (PDT) Received: from sdciot-sh07-lnx.qualcomm.com ([114.94.8.21]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-89d804ec645sm1016990b3a.43.2026.10.14.05.20.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Oct 2026 05:20:38 -0700 (PDT) From: Linghui Wu To: Bartosz Golaszewski , Bjorn Andersson , Konrad Dybcio Cc: Bartosz Golaszewski , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Miaoqing Pan , Hangtian Zhu , linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Linghui Wu Subject: [RFC PATCH 2/3] power: sequencing: qcom-wcn: support SW_CTRL wake IRQ Date: Wed, 14 Oct 2026 20:19:09 +0800 Message-ID: <20261014121910.1509541-3-linghui.wu@oss.qualcomm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261014121910.1509541-1-linghui.wu@oss.qualcomm.com> References: <20261014121910.1509541-1-linghui.wu@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: MJfSLzMN4-ArraLWtNal_Jv5ovgPAa0C X-Proofpoint-GUID: MJfSLzMN4-ArraLWtNal_Jv5ovgPAa0C X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE0MDA0OSBTYWx0ZWRfXxbYAMNdKwtTR xtMWEgbAf5wm68NxnBPRi3GYlVa3zO3NJNiXM37P6t48vMxqXjpoXPsNDwTixJQXXsdwqkX731i yQuCP2r0HBq54sZmIF5+m607DOso+DEW6JYib5MNomgkM5iyJZsdUwlbJERIKoOWfH1RwU7wbXe GS+RWiJlc6bCsy+Y9Fp6ZpVP0jXEUF6LcjnRfAVnl7gvy1eWrEzAqTfBmL4XcWDaA1ec5qL/uJB r/O8GZL8W7twhPWblHJSecgnRnkNqPvfBkAxpTtEyOgC2frQb69mRQgMzbgGBShlbpfzcXkqSAQ 9b0L/IHMTQDnI5ADBMiL3iMBhSrtSxzfyi4kRymRdEOsMa4tOXZ3rFC1N+q0N7vdQr2JmRjHCn/ 5CxkYg2/C4DbHWwGPfKnaFk5YnQ4ZillDz8CZxdxwMHxvmFfyI7MBonH4f/wSCerXkWEvCYru6w HYDR1D+Z4vGwQiprR3g== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE0MDA0OSBTYWx0ZWRfX1tLmxax+r5ux sYzcWxvyabnGZRWaY6FsrKFWQumL0ZXPcGb8vTSl3NUaR/58aGqUBqAsm+V0/CIiqnUvBymBhNJ Wdl7gMMrw+ieKqAUuSap2BgLh1dJZ2k= X-Authority-Analysis: v=2.4 cv=U7AHnuru c=1 sm=1 tr=0 ts=6acf7398 cx=c_pps a=WW5sKcV1LcKqjgzy2JUPuA==:117 a=Uz3yg00KUFJ2y2WijEJ4bw==:17 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=7e_bQlA4RtQnbCSGg-kA:9 a=OpyuDcXvxspvyRM73sMx:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-13_01,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 malwarescore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 bulkscore=0 phishscore=0 suspectscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610140049 Some WCN3990-family designs route SW_CTRL to an interrupt capable of waking the application processor. Requesting the IRQ resource also enables the Qualcomm TLMM power-save wakeup path when WAKEUP_PRESENT is advertised. When the PMU is marked as a wakeup source, retrieve the dedicated "wakeup" interrupt and register it as a dedicated wake IRQ. Keep it disabled during normal operation and let the PM core arm it for system suspend. Signed-off-by: Linghui Wu --- drivers/power/sequencing/pwrseq-qcom-wcn.c | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/power/sequencing/pwrseq-qcom-wcn.c b/drivers/power/sequencing/pwrseq-qcom-wcn.c index d41793e1fcd..e052187ffb9 100644 --- a/drivers/power/sequencing/pwrseq-qcom-wcn.c +++ b/drivers/power/sequencing/pwrseq-qcom-wcn.c @@ -11,6 +11,8 @@ #include #include #include +#include +#include #include #include #include @@ -454,11 +456,17 @@ static int pwrseq_qcom_wcn3990_match(struct pwrseq_device *pwrseq, return pwrseq_qcom_wcn_match_regulator(pwrseq, dev, "vdd-1.8-xo-supply"); } +static void pwrseq_qcom_wcn_clear_wake_irq(void *data) +{ + dev_pm_clear_wake_irq(data); +} + static int pwrseq_qcom_wcn_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct pwrseq_qcom_wcn_ctx *ctx; struct pwrseq_config config; + int wake_irq; int i, ret; ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); @@ -496,6 +504,28 @@ static int pwrseq_qcom_wcn_probe(struct platform_device *pdev) return dev_err_probe(dev, PTR_ERR(ctx->bt_gpio), "Failed to get the Bluetooth enable GPIO\n"); + if (device_property_read_bool(dev, "wakeup-source")) { + wake_irq = platform_get_irq_byname(pdev, "wakeup"); + if (wake_irq < 0) + return dev_err_probe(dev, wake_irq, + "Failed to get the SW_CTRL wake IRQ\n"); + + ret = devm_device_init_wakeup(dev); + if (ret) + return dev_err_probe(dev, ret, + "Failed to enable wakeup\n"); + + ret = dev_pm_set_dedicated_wake_irq(dev, wake_irq); + if (ret) + return dev_err_probe(dev, ret, + "Failed to set the SW_CTRL wake IRQ\n"); + + ret = devm_add_action_or_reset(dev, + pwrseq_qcom_wcn_clear_wake_irq, dev); + if (ret) + return ret; + } + /* * FIXME: This should actually be GPIOD_OUT_LOW, but doing so would * cause the WLAN power to be toggled, resulting in PCIe link down. -- 2.43.0