From patchwork Tue Oct 25 20:38:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 13019866 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 960C8FA373E for ; Tue, 25 Oct 2022 20:39:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231356AbiJYUjJ (ORCPT ); Tue, 25 Oct 2022 16:39:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37700 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232481AbiJYUjG (ORCPT ); Tue, 25 Oct 2022 16:39:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C8CA9AC4B9; Tue, 25 Oct 2022 13:39:05 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 6561B61B8C; Tue, 25 Oct 2022 20:39:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9C2C3C433B5; Tue, 25 Oct 2022 20:39:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666730344; bh=bnYxHxTDl/z/W50ryG9bLwzmSvCiz6uSDgFkbYd/EOA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=quKfNtmqtPTPLTrZWSAl0cLEuhgcf/eTZn6PkksPzNTkKRdt9LLiEKmtPfTHEfH9o 0b7yfbmDsdU0GCaUDTH4lMcyUwMh/EyH0E2X38RtiyvIQ9X84gteB04KfLVHlzXheT mOboh9mPuZvMcO6kQh9A8c7mvPpYnLV1r3+8OTz+qopU/CPFFbeCBUczRsFa29YRQ1 h3zgO/hd0veku1Pxl8zzSRHy3UAwl0y5xkICWjD7n7QvTbHirRdKAPXGHMTlXrnYh+ Gd56kvaSS9CTpc58lccQxt77LbhVxUY6YY4Z6yoylZGawZZOXMx1bGVNwz6zGay2zB fHTtavjyJWgew== From: Bjorn Helgaas To: David Airlie Cc: =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , "Rafael J . Wysocki" , Vaibhav Gupta , dri-devel@lists.freedesktop.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Helgaas Subject: [PATCH v2 3/8] agp/amd-k7: Convert to generic power management Date: Tue, 25 Oct 2022 15:38:47 -0500 Message-Id: <20221025203852.681822-4-helgaas@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221025203852.681822-1-helgaas@kernel.org> References: <20221025203852.681822-1-helgaas@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Bjorn Helgaas Convert agpgart-amdk7 from legacy PCI power management to the generic power management framework. Previously agpgart-amdk7 used legacy PCI power management, and agp_amdk7_suspend() and agp_amdk7_resume() were responsible for both device-specific things and generic PCI things like saving and restoring config space and managing power state: agp_amdk7_suspend pci_save_state <-- generic PCI pci_set_power_state <-- generic PCI agp_amdk7_resume pci_set_power_state(PCI_D0) <-- generic PCI pci_restore_state <-- generic PCI amd_irongate_driver.configure <-- device-specific Convert to generic power management where the PCI bus PM methods do the generic PCI things, and the driver needs only the device-specific part, i.e., suspend_devices_and_enter dpm_suspend_start(PMSG_SUSPEND) pci_pm_suspend # PCI bus .suspend() method agp_amdk7_suspend <-- not needed at all; removed suspend_enter dpm_suspend_noirq(PMSG_SUSPEND) pci_pm_suspend_noirq # PCI bus .suspend_noirq() method pci_save_state <-- generic PCI pci_prepare_to_sleep <-- generic PCI pci_set_power_state ... dpm_resume_end(PMSG_RESUME) pci_pm_resume # PCI bus .resume() method pci_restore_standard_config pci_set_power_state(PCI_D0) <-- generic PCI pci_restore_state <-- generic PCI agp_amdk7_resume # driver->pm->resume amd_irongate_driver.configure <-- device-specific Based on 0aeddbd0cb07 ("via-agp: convert to generic power management") by Vaibhav Gupta . Signed-off-by: Bjorn Helgaas --- drivers/char/agp/amd-k7-agp.c | 24 ++++-------------------- 1 file changed, 4 insertions(+), 20 deletions(-) diff --git a/drivers/char/agp/amd-k7-agp.c b/drivers/char/agp/amd-k7-agp.c index 2b2095542816..55397ba765d2 100644 --- a/drivers/char/agp/amd-k7-agp.c +++ b/drivers/char/agp/amd-k7-agp.c @@ -488,26 +488,11 @@ static void agp_amdk7_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } -#ifdef CONFIG_PM - -static int agp_amdk7_suspend(struct pci_dev *pdev, pm_message_t state) +static int agp_amdk7_resume(struct device *dev) { - pci_save_state(pdev); - pci_set_power_state(pdev, pci_choose_state(pdev, state)); - - return 0; -} - -static int agp_amdk7_resume(struct pci_dev *pdev) -{ - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - return amd_irongate_driver.configure(); } -#endif /* CONFIG_PM */ - /* must be the same order as name table above */ static const struct pci_device_id agp_amdk7_pci_table[] = { { @@ -539,15 +524,14 @@ static const struct pci_device_id agp_amdk7_pci_table[] = { MODULE_DEVICE_TABLE(pci, agp_amdk7_pci_table); +static DEFINE_SIMPLE_DEV_PM_OPS(agp_amdk7_pm_ops, NULL, agp_amdk7_resume); + static struct pci_driver agp_amdk7_pci_driver = { .name = "agpgart-amdk7", .id_table = agp_amdk7_pci_table, .probe = agp_amdk7_probe, .remove = agp_amdk7_remove, -#ifdef CONFIG_PM - .suspend = agp_amdk7_suspend, - .resume = agp_amdk7_resume, -#endif + .driver.pm = &agp_amdk7_pm_ops, }; static int __init agp_amdk7_init(void)