{"id":2219680,"url":"http://patchwork.ozlabs.org/api/patches/2219680/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260403-wakeirq_support-v9-1-1cbecf3b58d7@oss.qualcomm.com/","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/projects/28/?format=json","name":"Linux PCI development","link_name":"linux-pci","list_id":"linux-pci.vger.kernel.org","list_email":"linux-pci@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260403-wakeirq_support-v9-1-1cbecf3b58d7@oss.qualcomm.com>","list_archive_url":null,"date":"2026-04-03T17:33:33","name":"[v9,1/3] PM: sleep: wakeirq: Add support for dedicated shared wake IRQ setup","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"48f28f4b676fe29071ecd2c5a91ec9627b8fc8f7","submitter":{"id":89908,"url":"http://patchwork.ozlabs.org/api/people/89908/?format=json","name":"Krishna Chaitanya Chundru","email":"krishna.chundru@oss.qualcomm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260403-wakeirq_support-v9-1-1cbecf3b58d7@oss.qualcomm.com/mbox/","series":[{"id":498658,"url":"http://patchwork.ozlabs.org/api/series/498658/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/list/?series=498658","date":"2026-04-03T17:33:32","name":"PCI: Add support for PCIe WAKE# interrupt","version":9,"mbox":"http://patchwork.ozlabs.org/series/498658/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2219680/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2219680/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linux-pci@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=qualcomm.com header.i=@qualcomm.com header.a=rsa-sha256\n header.s=qcppdkim1 header.b=dqeG9Sey;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com\n header.a=rsa-sha256 header.s=google header.b=ZbbbTCxU;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"<20260403-wakeirq_support-v9-1-1cbecf3b58d7@oss.qualcomm.com>","References":"<20260403-wakeirq_support-v9-0-1cbecf3b58d7@oss.qualcomm.com>","In-Reply-To":"<20260403-wakeirq_support-v9-0-1cbecf3b58d7@oss.qualcomm.com>","To":"\"Rafael J. Wysocki\" , Len Brown ,\n Pavel Machek ,\n Greg Kroah-Hartman ,\n Danilo Krummrich ,\n Bjorn Helgaas ,\n Bartosz Golaszewski ,\n Linus Walleij ,\n Bartosz Golaszewski , Rob Herring ,\n Saravana Kannan ,\n Linus Walleij ","Cc":"linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,\n linux-pci@vger.kernel.org, linux-gpio@vger.kernel.org,\n quic_vbadigan@quicinc.com, sherry.sun@nxp.com,\n driver-core@lists.linux.dev, devicetree@vger.kernel.org,\n Krishna Chaitanya Chundru ","X-Mailer":"b4 0.14.2","X-Developer-Signature":"v=1; a=ed25519-sha256; t=1775237619; l=4919;\n i=krishna.chundru@oss.qualcomm.com; s=20230907; h=from:subject:message-id;\n bh=rZiOZBnfnYQhiYHGIxAvJ9diYifTV8qWwPU2z0ofvp8=;\n b=AtVe7Za3lH9ooZtSOFwQ+ddqgaaMkLKTsqDn9qYDBQyyFK+dX9FjNqWehwfP9dUX65Fmih+Dq\n T8CyWBsudwtARHgL1Bug5or/c6NzndI5Bwt1VErpm+i0QrfSWhK0PlH","X-Developer-Key":"i=krishna.chundru@oss.qualcomm.com; a=ed25519;\n pk=10CL2pdAKFyzyOHbfSWHCD0X0my7CXxj8gJScmn1FAg=","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDAzMDE1NiBTYWx0ZWRfX2YR6Z6zcEJqu\n 9MG5JAvFYmNspNobstOLgDpMh9fu1Q2r08ExDB5OspPLgtEej7xD7AyAu60KF3HePuA/KJucj11\n RML5MAX254BnLR5s46ehHtAcU9GvDO7lE6AWxb70mS0Raal6m0e2r5amTiFReOgVfQ69VhjGy4o\n VBkwA77oag5XTJ/zwkeD6xDkA0mC/QU98pc86SiX0zMEfmp/WsnEs+8eyVN4WtXbRyxHo6SocK5\n IlyKNqoIhdk8i4rScXHODWpXPrEUwgw8b5V7xy+MMoX4D6Itgu5OlunbHpdMJjVEivu1CWqP0Bf\n KWjz8UawbedqVlI/DwHmiaXnxyEN3YW6xzjKqHVeTkYRFhfUYsnvMKpKsZzICN4Jb6anKBx30HM\n W+LGw+Jhqd9gwYyatKhLRpPFbiBHNy6XvSpSU4/y1CB+XRjlYDgnb5J7fvWzSeLtqOzpRt9BrEf\n FnoqL3gjkWrs5q4pHdw==","X-Authority-Analysis":"v=2.4 cv=Cc4FJbrl c=1 sm=1 tr=0 ts=69cffa02 cx=c_pps\n a=Oh5Dbbf/trHjhBongsHeRQ==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17\n a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10\n a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=rJkE3RaqiGZ5pbrm-msn:22\n a=EUspDBNiAAAA:8 a=VwQbUJbxAAAA:8 a=GqrSgIjjxmp09zFQf4gA:9 a=QEXdDO2ut3YA:10\n a=_Vgx9l1VpLgwpw_dHYaR:22","X-Proofpoint-GUID":"8EblrXf41g2qFVlaMRq8y5oteSHAErH3","X-Proofpoint-ORIG-GUID":"8EblrXf41g2qFVlaMRq8y5oteSHAErH3","X-Proofpoint-Virus-Version":"vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-04-03_05,2026-04-03_01,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n priorityscore=1501 malwarescore=0 impostorscore=0 suspectscore=0\n lowpriorityscore=0 bulkscore=0 phishscore=0 spamscore=0 clxscore=1015\n adultscore=0 classifier=typeunknown authscore=0 authtc= authcc=\n route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001\n definitions=main-2604030156"},"content":"Some devices require more flexibility when configuring their dedicated\nwake-up interrupts, such as support for IRQF_SHARED or other IRQ flags.\nThis is particularly useful in PCIe systems where multiple endpoints\n(e.g., Wi-Fi and Bluetooth controllers) share a common WAKE# signal\nline which requests platform to re-establish power and reference clocks\nto the components. In such cases, drivers can use this new API\ndev_pm_set_dedicated_shared_wake_irq() to register a shared wake IRQ.\n\nUpdate the internal helper __dev_pm_set_dedicated_wake_irq() to accept an\nirq_flags argument. Modify the existing dev_pm_set_dedicated_wake_irq()\nand dev_pm_set_dedicated_wake_irq_reverse() to preserve current behavior.\n\nWhen IRQ registered with IRQF_SHARED we can't use IRQF_NO_AUTOEN flag,\nso after registering for irq, disable it explicitly.\n\nSigned-off-by: Krishna Chaitanya Chundru \nAcked-by: Rafael J. Wysocki (Intel) \n---\n drivers/base/power/wakeirq.c | 39 ++++++++++++++++++++++++++++++++++-----\n include/linux/pm_wakeirq.h | 6 ++++++\n 2 files changed, 40 insertions(+), 5 deletions(-)","diff":"diff --git a/drivers/base/power/wakeirq.c b/drivers/base/power/wakeirq.c\nindex ad23f0fa5d1a5a9eb49b1af2288ee4908082b13e..b7b106f55559a7c85cb35d9e5ed22fe37970662d 100644\n--- a/drivers/base/power/wakeirq.c\n+++ b/drivers/base/power/wakeirq.c\n@@ -171,7 +171,8 @@ static irqreturn_t handle_threaded_wake_irq(int irq, void *_wirq)\n \treturn IRQ_HANDLED;\n }\n \n-static int __dev_pm_set_dedicated_wake_irq(struct device *dev, int irq, unsigned int flag)\n+static int __dev_pm_set_dedicated_wake_irq(struct device *dev, int irq, unsigned int flag,\n+\t\t\t\t\t unsigned int irq_flags)\n {\n \tstruct wake_irq *wirq;\n \tint err;\n@@ -200,8 +201,7 @@ static int __dev_pm_set_dedicated_wake_irq(struct device *dev, int irq, unsigned\n \t * so we use a threaded irq.\n \t */\n \terr = request_threaded_irq(irq, NULL, handle_threaded_wake_irq,\n-\t\t\t\t IRQF_ONESHOT | IRQF_NO_AUTOEN,\n-\t\t\t\t wirq->name, wirq);\n+\t\t\t\t IRQF_ONESHOT | irq_flags, wirq->name, wirq);\n \tif (err)\n \t\tgoto err_free_name;\n \n@@ -237,7 +237,7 @@ static int __dev_pm_set_dedicated_wake_irq(struct device *dev, int irq, unsigned\n */\n int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq)\n {\n-\treturn __dev_pm_set_dedicated_wake_irq(dev, irq, 0);\n+\treturn __dev_pm_set_dedicated_wake_irq(dev, irq, 0, IRQF_NO_AUTOEN);\n }\n EXPORT_SYMBOL_GPL(dev_pm_set_dedicated_wake_irq);\n \n@@ -258,10 +258,39 @@ EXPORT_SYMBOL_GPL(dev_pm_set_dedicated_wake_irq);\n */\n int dev_pm_set_dedicated_wake_irq_reverse(struct device *dev, int irq)\n {\n-\treturn __dev_pm_set_dedicated_wake_irq(dev, irq, WAKE_IRQ_DEDICATED_REVERSE);\n+\treturn __dev_pm_set_dedicated_wake_irq(dev, irq, WAKE_IRQ_DEDICATED_REVERSE,\n+\t\t\t\t\t IRQF_NO_AUTOEN);\n }\n EXPORT_SYMBOL_GPL(dev_pm_set_dedicated_wake_irq_reverse);\n \n+/**\n+ * dev_pm_set_dedicated_shared_wake_irq - Request a dedicated shared wake-up interrupt\n+ * @dev: Device entry\n+ * @irq: Device wake-up interrupt\n+ * @flags: Custom IRQ flags (e.g., IRQ_TYPE_EDGE_FALLING)\n+ *\n+ * This API sets up a threaded interrupt handler for a device that has\n+ * a shared wake-up interrupt in addition to the device IO interrupt. It also\n+ * sets IRQ flags like IRQ_TYPE_EDGE_FALLING passed by the caller.\n+ *\n+ * Returns 0 on success or a negative error code on failure.\n+ */\n+int dev_pm_set_dedicated_shared_wake_irq(struct device *dev, int irq, unsigned long flags)\n+{\n+\tstruct wake_irq *wirq;\n+\tint ret;\n+\n+\tret = __dev_pm_set_dedicated_wake_irq(dev, irq, 0, IRQF_SHARED | flags);\n+\tif (ret)\n+\t\treturn ret;\n+\n+\twirq = dev->power.wakeirq;\n+\tdisable_irq_nosync(wirq->irq);\n+\n+\treturn 0;\n+}\n+EXPORT_SYMBOL_GPL(dev_pm_set_dedicated_shared_wake_irq);\n+\n /**\n * dev_pm_enable_wake_irq_check - Checks and enables wake-up interrupt\n * @dev: Device\ndiff --git a/include/linux/pm_wakeirq.h b/include/linux/pm_wakeirq.h\nindex 25b63ed51b765c2c6919f259668a12675330835e..61f1e840745b56baa57db37563e450cb2d757a85 100644\n--- a/include/linux/pm_wakeirq.h\n+++ b/include/linux/pm_wakeirq.h\n@@ -11,6 +11,7 @@ extern int dev_pm_set_dedicated_wake_irq(struct device *dev, int irq);\n extern int dev_pm_set_dedicated_wake_irq_reverse(struct device *dev, int irq);\n extern void dev_pm_clear_wake_irq(struct device *dev);\n extern int devm_pm_set_wake_irq(struct device *dev, int irq);\n+extern int dev_pm_set_dedicated_shared_wake_irq(struct device *dev, int irq, unsigned long flags);\n \n #else\t/* !CONFIG_PM */\n \n@@ -38,5 +39,10 @@ static inline int devm_pm_set_wake_irq(struct device *dev, int irq)\n \treturn 0;\n }\n \n+static inline int dev_pm_set_dedicated_shared_wake_irq(struct device *dev,\n+\t\t\t\t\t\t int irq, unsigned long flags)\n+{\n+\treturn 0;\n+}\n #endif\t/* CONFIG_PM */\n #endif\t/* _LINUX_PM_WAKEIRQ_H */\n","prefixes":["v9","1/3"]}