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GET /api/1.2/patches/831130/?format=api
{ "id": 831130, "url": "http://patchwork.ozlabs.org/api/1.2/patches/831130/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20171027072612.26565-8-jeffy.chen@rock-chips.com/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/1.2/projects/28/?format=api", "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": "<20171027072612.26565-8-jeffy.chen@rock-chips.com>", "list_archive_url": null, "date": "2017-10-27T07:26:12", "name": "[RFC,v10,7/7] PCI / PM: Add support for the PCIe WAKE# signal for OF", "commit_ref": null, "pull_url": null, "state": "not-applicable", "archived": false, "hash": "93be0f2776661d1573fbe3c016fc6cb9733b9478", "submitter": { "id": 67754, "url": "http://patchwork.ozlabs.org/api/1.2/people/67754/?format=api", "name": "Jeffy Chen", "email": "jeffy.chen@rock-chips.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20171027072612.26565-8-jeffy.chen@rock-chips.com/mbox/", "series": [ { "id": 10523, "url": "http://patchwork.ozlabs.org/api/1.2/series/10523/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=10523", "date": "2017-10-27T07:26:06", "name": "PCI: rockchip: Move PCIe WAKE# handling into pci core", "version": 10, "mbox": "http://patchwork.ozlabs.org/series/10523/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/831130/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/831130/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-pci-owner@vger.kernel.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=linux-pci-owner@vger.kernel.org;\n\treceiver=<UNKNOWN>)", "Received": [ "from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3yNb7p3yk8z9t2x\n\tfor <incoming@patchwork.ozlabs.org>;\n\tFri, 27 Oct 2017 18:28:06 +1100 (AEDT)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1752278AbdJ0H1v (ORCPT <rfc822;incoming@patchwork.ozlabs.org>);\n\tFri, 27 Oct 2017 03:27:51 -0400", "from regular1.263xmail.com ([211.150.99.130]:45154 \"EHLO\n\tregular1.263xmail.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1752213AbdJ0H1b (ORCPT\n\t<rfc822; linux-pci@vger.kernel.org>); Fri, 27 Oct 2017 03:27:31 -0400", "from jeffy.chen?rock-chips.com (unknown [192.168.167.228])\n\tby regular1.263xmail.com (Postfix) with ESMTP id AD229B23F;\n\tFri, 27 Oct 2017 15:27:27 +0800 (CST)", "from localhost (localhost [127.0.0.1])\n\tby smtp.263.net (Postfix) with ESMTPA id 7801C3C3;\n\tFri, 27 Oct 2017 15:27:24 +0800 (CST)", "from localhost (unknown [103.29.142.67])\n\tby smtp.263.net (Postfix) whith ESMTP id 10507LW0K2A;\n\tFri, 27 Oct 2017 15:27:27 +0800 (CST)" ], "X-263anti-spam": "KSV:0;", "X-MAIL-GRAY": "0", "X-MAIL-DELIVERY": "1", "X-KSVirus-check": "0", "X-ABS-CHECKED": "4", "X-RL-SENDER": "jeffy.chen@rock-chips.com", "X-FST-TO": "linux-kernel@vger.kernel.org", "X-SENDER-IP": "103.29.142.67", "X-LOGIN-NAME": "jeffy.chen@rock-chips.com", "X-UNIQUE-TAG": "<461e159ed8b17613307189c7f4772576>", "X-ATTACHMENT-NUM": "0", "X-SENDER": "cjf@rock-chips.com", "X-DNS-TYPE": "0", "From": "Jeffy Chen <jeffy.chen@rock-chips.com>", "To": "linux-kernel@vger.kernel.org, bhelgaas@google.com", "Cc": "linux-pm@vger.kernel.org, tony@atomide.com,\n\tshawn.lin@rock-chips.com, briannorris@chromium.org,\n\trjw@rjwysocki.net, dianders@chromium.org,\n\tJeffy Chen <jeffy.chen@rock-chips.com>, linux-pci@vger.kernel.org", "Subject": "[RFC PATCH v10 7/7] PCI / PM: Add support for the PCIe WAKE# signal\n\tfor OF", "Date": "Fri, 27 Oct 2017 15:26:12 +0800", "Message-Id": "<20171027072612.26565-8-jeffy.chen@rock-chips.com>", "X-Mailer": "git-send-email 2.11.0", "In-Reply-To": "<20171027072612.26565-1-jeffy.chen@rock-chips.com>", "References": "<20171027072612.26565-1-jeffy.chen@rock-chips.com>", "Sender": "linux-pci-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<linux-pci.vger.kernel.org>", "X-Mailing-List": "linux-pci@vger.kernel.org" }, "content": "Add pci-of.c to handle the PCIe WAKE# interrupt.\n\nAlso use the dedicated wakeirq infrastructure to simplify it.\n\nSigned-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>\n---\n\nChanges in v10:\nUse device_set_wakeup_capable() instead of device_set_wakeup_enable(),\nsince dedicated wakeirq will be lost in device_set_wakeup_enable(false).\n\nChanges in v9:\nFix check error in .cleanup().\nMove dedicated wakeirq setup to setup() callback and use\ndevice_set_wakeup_enable() to enable/disable.\n\nChanges in v8:\nAdd pci-of.c and use platform_pm_ops to handle the PCIe WAKE# signal.\n\nChanges in v7:\nMove PCIE_WAKE handling into pci core.\n\nChanges in v6:\nFix device_init_wake error handling, and add some comments.\n\nChanges in v5:\nRebase.\n\nChanges in v3:\nFix error handling.\n\nChanges in v2:\nUse dev_pm_set_dedicated_wake_irq.\n\n drivers/pci/Makefile | 2 +-\n drivers/pci/pci-of.c | 127 +++++++++++++++++++++++++++++++++++++++++++++++++++\n 2 files changed, 128 insertions(+), 1 deletion(-)\n create mode 100644 drivers/pci/pci-of.c", "diff": "diff --git a/drivers/pci/Makefile b/drivers/pci/Makefile\nindex 66a21acad952..4f76dbdb024c 100644\n--- a/drivers/pci/Makefile\n+++ b/drivers/pci/Makefile\n@@ -49,7 +49,7 @@ obj-$(CONFIG_PCI_ECAM) += ecam.o\n \n obj-$(CONFIG_XEN_PCIDEV_FRONTEND) += xen-pcifront.o\n \n-obj-$(CONFIG_OF) += of.o\n+obj-$(CONFIG_OF) += of.o pci-of.o\n \n ccflags-$(CONFIG_PCI_DEBUG) := -DDEBUG\n \ndiff --git a/drivers/pci/pci-of.c b/drivers/pci/pci-of.c\nnew file mode 100644\nindex 000000000000..28f3c4a0eec8\n--- /dev/null\n+++ b/drivers/pci/pci-of.c\n@@ -0,0 +1,127 @@\n+/*\n+ * OF PCI PM support\n+ *\n+ * Copyright (c) 2017 Rockchip, Inc.\n+ *\n+ * Author: Jeffy Chen <jeffy.chen@rock-chips.com>\n+ *\n+ * This program is free software: you can redistribute it and/or modify\n+ * it under the terms of the GNU General Public License as published by\n+ * the Free Software Foundation, either version 2 of the License, or\n+ * (at your option) any later version.\n+ */\n+\n+#include <linux/init.h>\n+#include <linux/of_irq.h>\n+#include <linux/pci.h>\n+#include <linux/pm_wakeirq.h>\n+#include \"pci.h\"\n+\n+struct of_pci_pm_data {\n+\tstruct device\t*dev;\n+\tunsigned int\twakeup_irq;\n+\tatomic_t\twakeup_cnt;\n+};\n+\n+static void *of_pci_setup(struct device *dev)\n+{\n+\tstruct of_pci_pm_data *data;\n+\tint irq, ret;\n+\n+\tif (!dev->of_node)\n+\t\treturn NULL;\n+\n+\tdata = devm_kzalloc(dev, sizeof(struct of_pci_pm_data), GFP_KERNEL);\n+\tif (!data)\n+\t\treturn ERR_PTR(-ENOMEM);\n+\n+\tirq = of_irq_get_byname(dev->of_node, \"wakeup\");\n+\tif (irq < 0) {\n+\t\tif (irq == -EPROBE_DEFER)\n+\t\t\treturn ERR_PTR(irq);\n+\n+\t\treturn NULL;\n+\t}\n+\n+\tdata->wakeup_irq = irq;\n+\tdata->dev = dev;\n+\n+\tdevice_init_wakeup(dev, true);\n+\tret = dev_pm_set_dedicated_wake_irq(dev, irq);\n+\tif (ret < 0) {\n+\t\tdevice_init_wakeup(dev, false);\n+\t\treturn NULL;\n+\t}\n+\tdevice_set_wakeup_capable(dev, false);\n+\n+\tdev_info(dev, \"Wakeup IRQ %d\\n\", irq);\n+\treturn data;\n+}\n+\n+static void *of_pci_setup_dev(struct pci_dev *pci_dev)\n+{\n+\treturn of_pci_setup(&pci_dev->dev);\n+}\n+\n+static void *of_pci_setup_host_bridge(struct pci_host_bridge *bridge)\n+{\n+\treturn of_pci_setup(bridge->dev.parent);\n+}\n+\n+static void of_pci_cleanup(void *pmdata)\n+{\n+\tstruct of_pci_pm_data *data = pmdata;\n+\n+\tif (!IS_ERR_OR_NULL(data)) {\n+\t\tdevice_init_wakeup(data->dev, false);\n+\t\tdev_pm_clear_wake_irq(data->dev);\n+\t}\n+}\n+\n+static bool of_pci_can_wakeup(void *pmdata)\n+{\n+\tstruct of_pci_pm_data *data = pmdata;\n+\n+\tif (IS_ERR_OR_NULL(data))\n+\t\treturn false;\n+\n+\treturn data->wakeup_irq > 0;\n+}\n+\n+static int of_pci_dev_wakeup(void *pmdata, bool enable)\n+{\n+\tstruct of_pci_pm_data *data = pmdata;\n+\tstruct device *dev = data->dev;\n+\n+\tdevice_set_wakeup_capable(dev, enable);\n+\treturn 0;\n+}\n+\n+static int of_pci_bridge_wakeup(void *pmdata, bool enable)\n+{\n+\tstruct of_pci_pm_data *data = pmdata;\n+\n+\tif (enable && atomic_inc_return(&data->wakeup_cnt) != 1)\n+\t\treturn 0;\n+\n+\tif (!enable && atomic_dec_return(&data->wakeup_cnt) != 0)\n+\t\treturn 0;\n+\n+\treturn of_pci_dev_wakeup(pmdata, enable);\n+}\n+\n+static const struct pci_platform_pm_ops of_pci_platform_pm = {\n+\t.setup_dev\t\t= of_pci_setup_dev,\n+\t.setup_host_bridge\t= of_pci_setup_host_bridge,\n+\t.cleanup\t\t= of_pci_cleanup,\n+\t.can_wakeup\t\t= of_pci_can_wakeup,\n+\t.dev_wakeup\t\t= of_pci_dev_wakeup,\n+\t.bridge_wakeup\t\t= of_pci_bridge_wakeup,\n+};\n+\n+static int __init of_pci_init(void)\n+{\n+\tpci_set_platform_pm(&of_pci_platform_pm);\n+\treturn 0;\n+}\n+arch_initcall(of_pci_init);\n", "prefixes": [ "RFC", "v10", "7/7" ] }