From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.1 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EBF90C433E0 for ; Wed, 5 Aug 2020 18:24:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C427322CA1 for ; Wed, 5 Aug 2020 18:24:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="PSluF0Ft" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728628AbgHESXv (ORCPT ); Wed, 5 Aug 2020 14:23:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60016 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729174AbgHESLJ (ORCPT ); Wed, 5 Aug 2020 14:11:09 -0400 Received: from mail-pl1-x643.google.com (mail-pl1-x643.google.com [IPv6:2607:f8b0:4864:20::643]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 62924C0617A3; Wed, 5 Aug 2020 11:09:45 -0700 (PDT) Received: by mail-pl1-x643.google.com with SMTP id w19so12758612plq.3; Wed, 05 Aug 2020 11:09:45 -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=B1dL9NIqPaG8kTtxrKrQZP2Mw3nbKryvhXJJhuiXF3I=; b=PSluF0FtdT+Om/bzBDquw3qF0LxOPjniWWeaGZe5f1u4fXAfbfPfTPE4tOA8oGXjKe SdK6vVKOsHOnS9c6GjmBKj+3NBigffqUQkvku2E5VbJAywb3NnTWnqL1Przbl35TLUYD r87i6InR6SIWjuZu7j38/XHbZfteiddwuiV6ydKo1Gxv/lcqkvvF7mcxyvcD4+BwijLq vvK/cwIzopjXNwodmnjjr85ID7eGGpsmi9UHh0vDsvbrxlxtgybYgsbEJxKoYKzyrwAU p3nxyFiekf1jXA36LKz03k+0VOMURFdkOAW4hqQTHcCDUUlnGh0ehmDo+M5HuSc+Dk7O cdzQ== 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=B1dL9NIqPaG8kTtxrKrQZP2Mw3nbKryvhXJJhuiXF3I=; b=RKa0ffHQy3khi1cHM89sV72liBhElOLqsdafTn+lfdB+h2bLrmBxX2KfOYgVcIyXud c0TX49IW0c4dFSfLq8Pw1MnNrJ3riXntjKNhnHAevCCeOwxGhmNdfaJ25zpCbpd3XDwd lLKjCEjCFRpfq5a5PzB0nHHyN9Tl+fORlYBiZdGZuWpmA6sjSHnisjDYedRcvZLf28gc yLsJ6TZ8yu8orHhLCKlyue3sWYZWxNde+BF43IPUx0Z/nWXGhs/UMsxLX9GwP/VGL4zy P8wtRdWs7r2EAKckrLQLB3jidst3jNTY8d/DufqHrmqHf+MF0bU4hJ/G1BpBoq5EqE5v 76uA== X-Gm-Message-State: AOAM530nF2AJPC4Y9/oQCoVkvQRO88+f3m6Atv0pkgPjnxGQNdDnPOif kapnjUJLpqVj/6kQkf8zDIM= X-Google-Smtp-Source: ABdhPJwPs+1RKcGAtXdbkaMuXzE72m2vxBZT/zcxGLG4rjME36hPn5Q3MfrQIKsdMVnlVU+1WOyZJg== X-Received: by 2002:a17:90a:f290:: with SMTP id fs16mr4432461pjb.35.1596650984881; Wed, 05 Aug 2020 11:09:44 -0700 (PDT) Received: from varodek.iballbatonwifi.com ([103.105.152.86]) by smtp.gmail.com with ESMTPSA id t63sm4977510pfb.210.2020.08.05.11.09.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 05 Aug 2020 11:09:44 -0700 (PDT) From: Vaibhav Gupta To: Bjorn Helgaas , Bjorn Helgaas , Bjorn Helgaas , Vaibhav Gupta , Bartlomiej Zolnierkiewicz , Paul Mackerras , Russell King , Andres Salomon , Antonino Daplas , Florian Tobias Schandinat Cc: Vaibhav Gupta , dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-geode@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kernel-mentees@lists.linuxfoundation.org, Shuah Khan Subject: [PATCH v1 04/12] fbdev: aty: use generic power management Date: Wed, 5 Aug 2020 23:37:14 +0530 Message-Id: <20200805180722.244008-5-vaibhavgupta40@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200805180722.244008-1-vaibhavgupta40@gmail.com> References: <20200805180722.244008-1-vaibhavgupta40@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Drivers using legacy power management .suspen()/.resume() callbacks have to manage PCI states and device's PM states themselves. They also need to take care of standard configuration registers. Switch to generic power management framework using a single "struct dev_pm_ops" variable to take the unnecessary load from the driver. This also avoids the need for the driver to directly call most of the PCI helper functions and device power state control functions, as through the generic framework PCI Core takes care of the necessary operations, and drivers are required to do only device-specific jobs. 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 */ -- 2.27.0