From patchwork Tue Oct 25 20:38:49 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 618608 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 4B894C38A2D for ; Tue, 25 Oct 2022 20:39:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232691AbiJYUjL (ORCPT ); Tue, 25 Oct 2022 16:39:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37726 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232566AbiJYUjK (ORCPT ); Tue, 25 Oct 2022 16:39:10 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7FD9FD0391; Tue, 25 Oct 2022 13:39:09 -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 1C4A061B8C; Tue, 25 Oct 2022 20:39:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4BD34C433C1; Tue, 25 Oct 2022 20:39:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1666730348; bh=8fcKVS7AfBzhVRRFGbvp3IwCPKGe825c+S+gHIvQpD4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dPxd7DCfKp0b1owFL2qCHDzBpXGBIbPB5tEc3UZ6kTQ6RBstcSNpDCZ+VvZiNcikw 6mjjA7M5RYjBqpCht5dCOnWAJZM7uH24TQNij5zE1tVoFQ9jeRv4g0q7NZD4L1GBH6 ONslAoUWPsYiuHp5zIop0jpT1rMlZVP+g8lORze+bAtC2fd0nl+ZQNN8ijimATfk4z 3KrzAJbYTPKuotWqtxcr5cuBgknoHC7QSxHZJHybyocEMXGYfYu1eKzVnzKX92m/x4 3DhKdiEycjWgxtn8K4lNw62KJIFuc71c1/cH1eCVIHn1EEts59nG0qh/TK3QbbsLgg dBHCnIUwTl5qg== 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 5/8] agp/nvidia: Convert to generic power management Date: Tue, 25 Oct 2022 15:38:49 -0500 Message-Id: <20221025203852.681822-6-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-pm@vger.kernel.org From: Bjorn Helgaas Convert agpgart-nvidia from legacy PCI power management to the generic power management framework. Previously agpgart-nvidia used legacy PCI power management, and agp_nvidia_suspend() and agp_nvidia_resume() were responsible for both device-specific things and generic PCI things: agp_nvidia_suspend pci_save_state <-- generic PCI pci_set_power_state(PCI_D3hot) <-- generic PCI agp_nvidia_resume pci_set_power_state(PCI_D0) <-- generic PCI pci_restore_state <-- generic PCI nvidia_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_nvidia_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_nvidia_resume # driver->pm->resume nvidia_configure <-- device-specific Based on 0aeddbd0cb07 ("via-agp: convert to generic power management") by Vaibhav Gupta . Signed-off-by: Bjorn Helgaas --- drivers/char/agp/nvidia-agp.c | 24 ++++-------------------- 1 file changed, 4 insertions(+), 20 deletions(-) diff --git a/drivers/char/agp/nvidia-agp.c b/drivers/char/agp/nvidia-agp.c index 826dbd06f6bb..dbcbc06cc202 100644 --- a/drivers/char/agp/nvidia-agp.c +++ b/drivers/char/agp/nvidia-agp.c @@ -404,28 +404,13 @@ static void agp_nvidia_remove(struct pci_dev *pdev) agp_put_bridge(bridge); } -#ifdef CONFIG_PM -static int agp_nvidia_suspend(struct pci_dev *pdev, pm_message_t state) +static int agp_nvidia_resume(struct device *dev) { - pci_save_state(pdev); - pci_set_power_state(pdev, PCI_D3hot); - - return 0; -} - -static int agp_nvidia_resume(struct pci_dev *pdev) -{ - /* set power state 0 and restore PCI space */ - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - /* reconfigure AGP hardware again */ nvidia_configure(); return 0; } -#endif - static const struct pci_device_id agp_nvidia_pci_table[] = { { @@ -449,15 +434,14 @@ static const struct pci_device_id agp_nvidia_pci_table[] = { MODULE_DEVICE_TABLE(pci, agp_nvidia_pci_table); +static DEFINE_SIMPLE_DEV_PM_OPS(agp_nvidia_pm_ops, NULL, agp_nvidia_resume); + static struct pci_driver agp_nvidia_pci_driver = { .name = "agpgart-nvidia", .id_table = agp_nvidia_pci_table, .probe = agp_nvidia_probe, .remove = agp_nvidia_remove, -#ifdef CONFIG_PM - .suspend = agp_nvidia_suspend, - .resume = agp_nvidia_resume, -#endif + .driver.pm = &agp_nvidia_pm_ops, }; static int __init agp_nvidia_init(void)