From patchwork Wed Aug 19 18:56:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vaibhav Gupta X-Patchwork-Id: 11725671 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 F186014F6 for ; Thu, 20 Aug 2020 07:15:24 +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 D02B620786 for ; Thu, 20 Aug 2020 07:15:24 +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="C/qtghbr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D02B620786 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 9DAAF6E8CC; Thu, 20 Aug 2020 07:14:50 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pj1-x1043.google.com (mail-pj1-x1043.google.com [IPv6:2607:f8b0:4864:20::1043]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5FAC46E5CC for ; Wed, 19 Aug 2020 18:59:05 +0000 (UTC) Received: by mail-pj1-x1043.google.com with SMTP id ds1so1195521pjb.1 for ; Wed, 19 Aug 2020 11:59:05 -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=YOa3gLvydrZ+M8ZPM8t68nbD2HobP2Ca0rk36tt9kOs=; b=C/qtghbrD1UJlZHs7y6FJYluRDf7CVLYC6umtiDsiG0okaZ48xgOnCZVaDIDNIqm/b FW/eWMbuVSTGJEPCgzwngz09k3+JNnmeQ1e/J5WIdsdMK3bzSljXkTU30HJW1pAM/709 JQeRjaK/A0CtwlHIXPKI4SThX1dJcWQqZd4KOfv8VXarjBl2fzLsY1YgeEVy3bCsqwgG fK4xtmeJXjK5V5h08cOj22kPjtmMfZgNCgO1ZzZJ86ug3h1sAQunascNG24dFQs2TIaO XIpVOvJ1QJzcMPICCMmjfCJ5g/BZkJmy5rQ2qkmCDZ23R3rPG7itSNv40EQheWT4zv0P I2PQ== 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=YOa3gLvydrZ+M8ZPM8t68nbD2HobP2Ca0rk36tt9kOs=; b=O5WKoD0m+7mrzkZR3LkEiLOik9h/snHFq3LYeTF+8Zw6ZmBL+xBcyGWgTPZVjnVLsA 9PMXHUbbF3zd0yxrc1/40LMswK3NLUfRtbvie/eehl+UCTGfG1kkrZ+lcXIyBLN1SK0R w/ZUSXL8q54z2MhOVhS/gdBCOH8b5HImR67jwtK8Y1StnWR3DetmT/2Lj6MSmnyoL/SO idV1qgFPE4Ty1/MCItDoVthLhAnO2ZFXIeHwQipE5xprckFA/DADNbjp8Bx1tUCNj3jZ gwTQRBIfpiWcAoYpJVWDDpWdfIMn/dcLLIkAuzAalnJjCjrl+lEhjDmRsxiXSTPRhydj wVSA== X-Gm-Message-State: AOAM5337J9W5/8NtvdFfX+foLYiipRQEoxW3CJ8n0gfYb+qbFioJm2dJ ZLnSSvz/NH4Ep6NRHidlrCU= X-Google-Smtp-Source: ABdhPJxER7aCHiNOQ/dUrb1nUfSCAIhoucl6lnSouMre2qYP5XjMMuE9m++iANKwAsbi1PazpLm+Zg== X-Received: by 2002:a17:90b:378d:: with SMTP id mz13mr5175546pjb.98.1597863544886; Wed, 19 Aug 2020 11:59:04 -0700 (PDT) Received: from varodek.iballbatonwifi.com ([103.105.152.86]) by smtp.gmail.com with ESMTPSA id o134sm29149305pfg.200.2020.08.19.11.58.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Aug 2020 11:59:04 -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 01/12] fbdev: gxfb: use generic power management Date: Thu, 20 Aug 2020 00:26:43 +0530 Message-Id: <20200819185654.151170-2-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" Switch to the new generic framework by updating function signatures and define a "struct dev_pm_ops" variable to bind PM callbacks. This way we can remove the legacy .suspend & .resume bindings from "gxfb_driver". The gxfb_suspend() is designed to function only in the case of Suspend. Thus, the code was kept inside "if (state.event == PM_EVENT_SUSPEND)" container. This is because, in the legacy framework, this callback was invoked even in the event of Freeze and Hibernate. Hence, added the load of unnecessary function-calls. The goal can be achieved by binding the callback with only "gxfb_pm_ops.suspend" in the new framework. This also avoids the step of checking "if (state.event == PM_EVENT_SUSPEND)" every time the callback is invoked. Signed-off-by: Vaibhav Gupta --- drivers/video/fbdev/geode/gxfb.h | 5 ---- drivers/video/fbdev/geode/gxfb_core.c | 36 ++++++++++++++------------ drivers/video/fbdev/geode/suspend_gx.c | 4 --- 3 files changed, 20 insertions(+), 25 deletions(-) diff --git a/drivers/video/fbdev/geode/gxfb.h b/drivers/video/fbdev/geode/gxfb.h index d2e9c5c8e294..792c111c21e4 100644 --- a/drivers/video/fbdev/geode/gxfb.h +++ b/drivers/video/fbdev/geode/gxfb.h @@ -21,7 +21,6 @@ struct gxfb_par { void __iomem *dc_regs; void __iomem *vid_regs; void __iomem *gp_regs; -#ifdef CONFIG_PM int powered_down; /* register state, for power management functionality */ @@ -36,7 +35,6 @@ struct gxfb_par { uint64_t fp[FP_REG_COUNT]; uint32_t pal[DC_PAL_COUNT]; -#endif }; unsigned int gx_frame_buffer_size(void); @@ -49,11 +47,8 @@ void gx_set_dclk_frequency(struct fb_info *info); void gx_configure_display(struct fb_info *info); int gx_blank_display(struct fb_info *info, int blank_mode); -#ifdef CONFIG_PM int gx_powerdown(struct fb_info *info); int gx_powerup(struct fb_info *info); -#endif - /* Graphics Processor registers (table 6-23 from the data book) */ enum gp_registers { diff --git a/drivers/video/fbdev/geode/gxfb_core.c b/drivers/video/fbdev/geode/gxfb_core.c index d38a148d4746..44089b331f91 100644 --- a/drivers/video/fbdev/geode/gxfb_core.c +++ b/drivers/video/fbdev/geode/gxfb_core.c @@ -322,17 +322,14 @@ static struct fb_info *gxfb_init_fbinfo(struct device *dev) return info; } -#ifdef CONFIG_PM -static int gxfb_suspend(struct pci_dev *pdev, pm_message_t state) +static int __maybe_unused gxfb_suspend(struct device *dev) { - struct fb_info *info = pci_get_drvdata(pdev); + struct fb_info *info = dev_get_drvdata(dev); - if (state.event == PM_EVENT_SUSPEND) { - console_lock(); - gx_powerdown(info); - fb_set_suspend(info, 1); - console_unlock(); - } + console_lock(); + gx_powerdown(info); + fb_set_suspend(info, 1); + console_unlock(); /* there's no point in setting PCI states; we emulate PCI, so * we don't end up getting power savings anyways */ @@ -340,9 +337,9 @@ static int gxfb_suspend(struct pci_dev *pdev, pm_message_t state) return 0; } -static int gxfb_resume(struct pci_dev *pdev) +static int __maybe_unused gxfb_resume(struct device *dev) { - struct fb_info *info = pci_get_drvdata(pdev); + struct fb_info *info = dev_get_drvdata(dev); int ret; console_lock(); @@ -356,7 +353,6 @@ static int gxfb_resume(struct pci_dev *pdev) console_unlock(); return 0; } -#endif static int gxfb_probe(struct pci_dev *pdev, const struct pci_device_id *id) { @@ -467,15 +463,23 @@ static const struct pci_device_id gxfb_id_table[] = { MODULE_DEVICE_TABLE(pci, gxfb_id_table); +static const struct dev_pm_ops gxfb_pm_ops = { +#ifdef CONFIG_PM_SLEEP + .suspend = gxfb_suspend, + .resume = gxfb_resume, + .freeze = NULL, + .thaw = gxfb_resume, + .poweroff = NULL, + .restore = gxfb_resume, +#endif +}; + static struct pci_driver gxfb_driver = { .name = "gxfb", .id_table = gxfb_id_table, .probe = gxfb_probe, .remove = gxfb_remove, -#ifdef CONFIG_PM - .suspend = gxfb_suspend, - .resume = gxfb_resume, -#endif + .driver.pm = &gxfb_pm_ops, }; #ifndef MODULE diff --git a/drivers/video/fbdev/geode/suspend_gx.c b/drivers/video/fbdev/geode/suspend_gx.c index 1110a527c35c..8c49d4e98772 100644 --- a/drivers/video/fbdev/geode/suspend_gx.c +++ b/drivers/video/fbdev/geode/suspend_gx.c @@ -11,8 +11,6 @@ #include "gxfb.h" -#ifdef CONFIG_PM - static void gx_save_regs(struct gxfb_par *par) { int i; @@ -259,5 +257,3 @@ int gx_powerup(struct fb_info *info) par->powered_down = 0; return 0; } - -#endif