From patchwork Wed Aug 19 18:56:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vaibhav Gupta X-Patchwork-Id: 11725733 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 17C6F14F6 for ; Thu, 20 Aug 2020 07:16:49 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EAD9820786 for ; Thu, 20 Aug 2020 07:16:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="YSsPXgdb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EAD9820786 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 73FCC6E8F3; Thu, 20 Aug 2020 07:15:39 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by gabe.freedesktop.org (Postfix) with ESMTPS id 738CF6E5CC for ; Wed, 19 Aug 2020 18:59:25 +0000 (UTC) Received: by mail-pg1-x542.google.com with SMTP id 128so11843200pgd.5 for ; Wed, 19 Aug 2020 11:59:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=6SwW9DvsaTVzEe8rYytiBA176ZEm49NeUyegN/TvZxk=; b=YSsPXgdbsE6HMZQBWbvHa516SeqorDSP49+EHMEd67zIXPQeYtQtmOAjF56GHZ4ENC Xes44b5QftvrU0bHvqmBY/RJBqIT/mqJOJMuwq5oR550n1Dt39WkwKAtb56Jp/BNpapU n5xcaM+eXqCMXR11855GweHH4jxNv8qQVFzY8PxtYAY32anTsYLwg42iteXgiQv3cVoH jyaR9706HrP9cwbBlREmMl7vs9xrggzmsyU2mJgfjvc/r1XVeumsdfG61K8EDi+P9Vx0 xOhdUfcyDgzEOOsSKCza8JUml+9+kIoZ2cc/CG4h5ByYWhQfiFmQ0so34lSoaOfYBJV1 kbkg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=6SwW9DvsaTVzEe8rYytiBA176ZEm49NeUyegN/TvZxk=; b=BV8sCLysnYW2Uxwm2OVb7062fAfHFhtiSvLlcoij4aYKlTfe0c+PjdJ6vNm5EaH9ZN 6lhMpxMbIYkHo3DkHLT2byQeZJ3lRUDGcS0fkSZRJRPL6T3y4TL6ye76RfY3KoTCntQ/ vWXT4rsMYiUHODM0deybLe2ekmoSGWuTimQ1PXX6ltP1bxDMsfeZgckEcl6p7MRMTRjW Qoy+IumYVF8BJSNq/fAiFJaJxhXNFPN70FvlphZVo1+UtXuIjd49iAZ4zY1C7p2imLLP 3o2vOslmAklC/Qprtb1qJk1zcFPc0cTtrKWQo/HeRizd7Lkyu3wKS84DD3rBNL2rI6ZE nAtw== X-Gm-Message-State: AOAM533lESfSrdCfLZ3J7ZIyd7jLSoLGnEAMko95XZ6ma6YNk9epOIfV HfkTlme9J73zcrKNSLMmD2gNtCSle3CWT511 X-Google-Smtp-Source: ABdhPJzlZoB9mX9uX/0f4umZ3wploRhwn9d7X9NR1Pk93n4y87Cd9Zl8KupRYvEiMnjWyJTmoxrHHQ== X-Received: by 2002:aa7:8757:: with SMTP id g23mr20042724pfo.283.1597863564965; Wed, 19 Aug 2020 11:59:24 -0700 (PDT) Received: from varodek.iballbatonwifi.com ([103.105.152.86]) by smtp.gmail.com with ESMTPSA id o134sm29149305pfg.200.2020.08.19.11.59.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Aug 2020 11:59:24 -0700 (PDT) From: Vaibhav Gupta To: Bjorn Helgaas , Bjorn Helgaas , Bjorn Helgaas , Vaibhav Gupta , Bartlomiej Zolnierkiewicz , Sam Ravnborg , Paul Mackerras , Russell King , Andres Salomon , Antonino Daplas Subject: [PATCH v3 04/12] fbdev: aty: use generic power management Date: Thu, 20 Aug 2020 00:26:46 +0530 Message-Id: <20200819185654.151170-5-vaibhavgupta40@gmail.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200819185654.151170-1-vaibhavgupta40@gmail.com> References: <20200819185654.151170-1-vaibhavgupta40@gmail.com> MIME-Version: 1.0 X-Mailman-Approved-At: Thu, 20 Aug 2020 07:14:47 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, Vaibhav Gupta , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-geode@lists.infradead.org, Shuah Khan , linux-kernel-mentees@lists.linuxfoundation.org, linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Drivers should do only device-specific jobs. But in general, drivers using legacy PCI PM framework for .suspend()/.resume() have to manage many PCI PM-related tasks themselves which can be done by PCI Core itself. This brings extra load on the driver and it directly calls PCI helper functions to handle them. Switch to the new generic framework by updating function signatures and define a "struct dev_pm_ops" variable to bind PM callbacks. Also, remove unnecessary calls to the PCI Helper functions along with the legacy .suspend & .resume bindings. Now, - atyfb_pci_suspend() had a "pm_message_t" type parameter as per legacy PCI PM framework, that got deprecated in generic. - Rename the callback as atyfb_pci_suspend_late() and preserve the parameter. - Define 3 new callbacks as: * atyfb_pci_suspend() * atyfb_pci_freeze() * atyfb_pci_hibernate() which in turn call atyfb_pci_suspend_late() by passing appropriate value for "pm_message_t" type parameter. - Bind the callbacks in "struct dev_pm_ops" type variable "atyfb_pci_pm_ops". Signed-off-by: Vaibhav Gupta --- drivers/video/fbdev/aty/atyfb_base.c | 50 ++++++++++++++++++++-------- 1 file changed, 36 insertions(+), 14 deletions(-) diff --git a/drivers/video/fbdev/aty/atyfb_base.c b/drivers/video/fbdev/aty/atyfb_base.c index b0ac895e5ac9..a24d5bf6ade1 100644 --- a/drivers/video/fbdev/aty/atyfb_base.c +++ b/drivers/video/fbdev/aty/atyfb_base.c @@ -132,8 +132,8 @@ #define PRINTKI(fmt, args...) printk(KERN_INFO "atyfb: " fmt, ## args) #define PRINTKE(fmt, args...) printk(KERN_ERR "atyfb: " fmt, ## args) -#if defined(CONFIG_PM) || defined(CONFIG_PMAC_BACKLIGHT) || \ -defined (CONFIG_FB_ATY_GENERIC_LCD) || defined(CONFIG_FB_ATY_BACKLIGHT) +#if defined(CONFIG_PMAC_BACKLIGHT) || defined(CONFIG_FB_ATY_GENERIC_LCD) || \ +defined(CONFIG_FB_ATY_BACKLIGHT) static const u32 lt_lcd_regs[] = { CNFG_PANEL_LG, LCD_GEN_CNTL_LG, @@ -175,7 +175,7 @@ u32 aty_ld_lcd(int index, const struct atyfb_par *par) return aty_ld_le32(LCD_DATA, par); } } -#endif /* defined(CONFIG_PM) || defined(CONFIG_PMAC_BACKLIGHT) || defined (CONFIG_FB_ATY_GENERIC_LCD) */ +#endif /* defined(CONFIG_PMAC_BACKLIGHT) || defined (CONFIG_FB_ATY_GENERIC_LCD) */ #ifdef CONFIG_FB_ATY_GENERIC_LCD /* @@ -1994,7 +1994,7 @@ static int atyfb_mmap(struct fb_info *info, struct vm_area_struct *vma) -#if defined(CONFIG_PM) && defined(CONFIG_PCI) +#if defined(CONFIG_PCI) #ifdef CONFIG_PPC_PMAC /* Power management routines. Those are used for PowerBook sleep. @@ -2055,8 +2055,9 @@ static int aty_power_mgmt(int sleep, struct atyfb_par *par) } #endif /* CONFIG_PPC_PMAC */ -static int atyfb_pci_suspend(struct pci_dev *pdev, pm_message_t state) +static int atyfb_pci_suspend_late(struct device *dev, pm_message_t state) { + struct pci_dev *pdev = to_pci_dev(dev); struct fb_info *info = pci_get_drvdata(pdev); struct atyfb_par *par = (struct atyfb_par *) info->par; @@ -2082,7 +2083,6 @@ static int atyfb_pci_suspend(struct pci_dev *pdev, pm_message_t state) * first save the config space content so the core can * restore it properly on resume. */ - pci_save_state(pdev); #ifdef CONFIG_PPC_PMAC /* Set chip to "suspend" mode */ @@ -2094,8 +2094,6 @@ static int atyfb_pci_suspend(struct pci_dev *pdev, pm_message_t state) console_unlock(); return -EIO; } -#else - pci_set_power_state(pdev, pci_choose_state(pdev, state)); #endif console_unlock(); @@ -2105,6 +2103,21 @@ static int atyfb_pci_suspend(struct pci_dev *pdev, pm_message_t state) return 0; } +static int __maybe_unused atyfb_pci_suspend(struct device *dev) +{ + return atyfb_pci_suspend_late(dev, PMSG_SUSPEND); +} + +static int __maybe_unused atyfb_pci_hibernate(struct device *dev) +{ + return atyfb_pci_suspend_late(dev, PMSG_HIBERNATE); +} + +static int __maybe_unused atyfb_pci_freeze(struct device *dev) +{ + return atyfb_pci_suspend_late(dev, PMSG_FREEZE); +} + static void aty_resume_chip(struct fb_info *info) { struct atyfb_par *par = info->par; @@ -2119,8 +2132,9 @@ static void aty_resume_chip(struct fb_info *info) aty_ld_le32(BUS_CNTL, par) | BUS_APER_REG_DIS, par); } -static int atyfb_pci_resume(struct pci_dev *pdev) +static int __maybe_unused atyfb_pci_resume(struct device *dev) { + struct pci_dev *pdev = to_pci_dev(dev); struct fb_info *info = pci_get_drvdata(pdev); struct atyfb_par *par = (struct atyfb_par *) info->par; @@ -2162,7 +2176,18 @@ static int atyfb_pci_resume(struct pci_dev *pdev) return 0; } -#endif /* defined(CONFIG_PM) && defined(CONFIG_PCI) */ +static const struct dev_pm_ops atyfb_pci_pm_ops = { +#ifdef CONFIG_PM_SLEEP + .suspend = atyfb_pci_suspend, + .resume = atyfb_pci_resume, + .freeze = atyfb_pci_freeze, + .thaw = atyfb_pci_resume, + .poweroff = atyfb_pci_hibernate, + .restore = atyfb_pci_resume, +#endif /* CONFIG_PM_SLEEP */ +}; + +#endif /* defined(CONFIG_PCI) */ /* Backlight */ #ifdef CONFIG_FB_ATY_BACKLIGHT @@ -3801,10 +3826,7 @@ static struct pci_driver atyfb_driver = { .id_table = atyfb_pci_tbl, .probe = atyfb_pci_probe, .remove = atyfb_pci_remove, -#ifdef CONFIG_PM - .suspend = atyfb_pci_suspend, - .resume = atyfb_pci_resume, -#endif /* CONFIG_PM */ + .driver.pm = &atyfb_pci_pm_ops, }; #endif /* CONFIG_PCI */