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Wed, 11 Nov 2026 23:20:31 -0800 (PST) Received: from sdciot-sh07-lnx.qualcomm.com ([114.94.8.21]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3b197c73e27sm3149185a91.9.2026.11.11.23.20.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Nov 2026 23:20:30 -0800 (PST) From: Linghui Wu To: Bartosz Golaszewski Cc: Bjorn Andersson , Konrad Dybcio , Abel Vesa , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bartosz Golaszewski , Miaoqing Pan , Hangtian Zhu , Shuai Zhang , linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Linghui Wu Subject: [PATCH v4 2/3] power: sequencing: qcom-wcn: support SW_CTRL wake IRQ Date: Thu, 12 Nov 2026 15:20:08 +0800 Message-ID: <20261112072009.3815276-3-linghui.wu@oss.qualcomm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261112072009.3815276-1-linghui.wu@oss.qualcomm.com> References: <20261019093911.3199891-1-linghui.wu@oss.qualcomm.com> <20261112072009.3815276-1-linghui.wu@oss.qualcomm.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Proofpoint-ORIG-GUID: ecZJrD1am6Quj8drs9HqcBlzZsZeOf4A X-Proofpoint-Spam-Info: AW1haW4tMjYxMTEyMDAyOSBTYWx0ZWRfX5AEzQ3Ebketp hblZQQo8runFd5JzvByUJso8tWOKiPXW5NtoJbgs/ZrdBaPSOcrZz42kxJTsvNxa4wWPecSFOze eE4XB/o/ASxpFR8gDgLGA+iF5JTix8I= X-Proofpoint-GUID: ecZJrD1am6Quj8drs9HqcBlzZsZeOf4A X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMTEyMDAyOSBTYWx0ZWRfX9vZ9C4sAeY40 TAMH0yQPq6P4HmRrswpwiMU8ElJ5mYmVVxuJQSOvvbu+D7w+U+SKjRoNTg0dP2iPTS2HH4wLj4t LxELDyj9pE+gYk/8ceC141V//ECnBl1/ub4n+4xWnDnFu2b2m8E0ExiU2DwNLzsuLi56HVJoqu7 mVK4Mx3ZkE5HCNYsvoaAFUWnfDVP1pgM9zySyBvBHe3F8PHIUoqi0T7McfPqSO+Him3qPUPb2v7 hYqx0YKJyj2CLc6ZMENmdQii9OaSo2k/vH742YCQoXhRthcIw3IADOQjGqzSt0RwJpFlqNhneLc x1Qt2Naqb7CghY4gxFThdQ9a9L30ZuXUtX566cWp0uF48oF+N4+Vupzck+rzaIYE8oVx376X9eZ KXNIcmZzqhl9mb4Of+zhctplXIeFBQSK76YL9Jv3djaZbXpBmkPPzSBb4Yj9ScIKzg0u6auuVl0 wBtINIO9XZ/x1IX1Vxg== X-Authority-Analysis: v=2.4 cv=A8b5rKWG c=1 sm=1 tr=0 ts=6af568c0 cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=Uz3yg00KUFJ2y2WijEJ4bw==:17 a=zJRp6_cAMcgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=d3QjpUUrb7QHECHc-BAA:9 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-11-12_01,2026-11-11_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 malwarescore=0 spamscore=0 clxscore=1015 impostorscore=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 suspectscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2611040001 definitions=main-2611120029 Some WCN3990-family devices use SW_CTRL to signal that resources need to remain available while the application processor is suspended. When the PMU is marked as a wakeup source, request the existing SW_CTRL GPIO as an input, map it to an IRQ and register it as a dedicated wake IRQ. The PM core then keeps the IRQ disabled during normal operation and arms it for system suspend. Signed-off-by: Linghui Wu --- drivers/power/sequencing/pwrseq-qcom-wcn.c | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/power/sequencing/pwrseq-qcom-wcn.c b/drivers/power/sequencing/pwrseq-qcom-wcn.c index e51b655add01..26b436df9b93 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 @@ -484,11 +486,18 @@ 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 gpio_desc *swctrl_gpio; struct pwrseq_config config; + int wake_irq; int i, ret; ctx = devm_kzalloc_obj(dev, *ctx); @@ -525,6 +534,33 @@ 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")) { + swctrl_gpio = devm_gpiod_get(dev, "swctrl", GPIOD_IN); + if (IS_ERR(swctrl_gpio)) + return dev_err_probe(dev, PTR_ERR(swctrl_gpio), + "Failed to get the SW_CTRL GPIO\n"); + + wake_irq = gpiod_to_irq(swctrl_gpio); + 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; + } + ctx->wlan_gpio = devm_gpiod_get_optional(dev, "wlan-enable", GPIOD_OUT_LOW); if (IS_ERR(ctx->wlan_gpio)) -- 2.43.0