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Wed, 14 Oct 2026 21:13:01 -0700 (PDT) Received: from sdciot-sh07-lnx.qualcomm.com ([114.94.8.21]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ac944af2f1sm2267762a91.15.2026.10.14.21.12.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Oct 2026 21:13:01 -0700 (PDT) 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 , 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 v2 2/3] power: sequencing: qcom-wcn: support SW_CTRL wake IRQ Date: Thu, 15 Oct 2026 12:12:40 +0800 Message-ID: <20261015041241.2186521-3-linghui.wu@oss.qualcomm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261015041241.2186521-1-linghui.wu@oss.qualcomm.com> References: <20261014121910.1509541-1-linghui.wu@oss.qualcomm.com> <20261015041241.2186521-1-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-Spam-Info: AW1haW4tMjYxMDE1MDAxNiBTYWx0ZWRfX3xH+H7BPic0R CMVaP0Q6mi6LPh8mqoILhjrZOHgXcVhu/GfFD6v9TIT9RvvWI582+tr4nrDVLESn5EUIeLpf2Sp FX13/JMfLeSOgBpYYeypwOVso+gWwQw= X-Authority-Analysis: v=2.4 cv=K9u3jCWI c=1 sm=1 tr=0 ts=6ad052cf cx=c_pps a=RP+M6JBNLl+fLTcSJhASfg==:117 a=Uz3yg00KUFJ2y2WijEJ4bw==:17 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=EUspDBNiAAAA:8 a=d3QjpUUrb7QHECHc-BAA:9 a=iS9zxrgQBfv6-_F4QbHw:22 X-Proofpoint-GUID: Drvp8rcNwOGi2yDD4RG8hsEJxZYs2lsS X-Proofpoint-ORIG-GUID: Drvp8rcNwOGi2yDD4RG8hsEJxZYs2lsS X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE1MDAxNiBTYWx0ZWRfX1HGk+K8Qn7lr efDlOk0ikB+GasKk995Ab7iEDUGQ1kKH6Bq4craIemUtFAIS5bTQwlrCKOVPLAOVa2ogYgTS/lv dIgbRzzjkUbZG1GH/8QrX9EgVK0rV3Us6U4vZl8AkDnVR5YoGwiECnVPBr+zZrMdPbSYQQd/KtK MvxGEWagLvY++FgADyL/9jNAXOfK9al+iPkT+wId32C8JEGayvSOjFROoLJ5X7eAvzmBU5YMzOH uwpTtFrbHUrZSYz09NznmCkSe8NSNH5dYesOqXZwGQdH7EW4uLPcM5MM8pii2jWUhUiHwjIbISj Y3qUjaJBiJkRYL2IeDr43RPKabkqmrDqyJfoQ8buQqEma329rsuXZM0MJEwiZ9ZNTefvHTXEAhJ Mvll5JS8hxqyrCI6yNfRztD+KICODoS2XdJyA/Q3+wNwq+CouspewdgQaZIW+F+o5snHA5z7yID h0U3GbEH9Hjz98KLllw== 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_01,2026-10-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 clxscore=1015 spamscore=0 priorityscore=1501 phishscore=0 suspectscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610150016 Some WCN3990-family devices use SW_CTRL to signal that resources must 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 636dd7e63891..69b7eb565996 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(dev, sizeof(*ctx), GFP_KERNEL); @@ -526,6 +535,33 @@ 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