From patchwork Wed Feb 6 10:14:44 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kepplinger X-Patchwork-Id: 10798981 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EE50913B4 for ; Wed, 6 Feb 2019 10:15:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D6A382956B for ; Wed, 6 Feb 2019 10:15:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C691A29943; Wed, 6 Feb 2019 10:15:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DD63B2956B for ; Wed, 6 Feb 2019 10:15:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729553AbfBFKPH (ORCPT ); Wed, 6 Feb 2019 05:15:07 -0500 Received: from mx-ginzinger.sigmacloud.services ([185.154.235.147]:34011 "EHLO mx-ginzinger.sigmacloud.services" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729185AbfBFKPG (ORCPT ); Wed, 6 Feb 2019 05:15:06 -0500 Received: from [31.193.165.228] (port=60550 helo=mx-ginzinger.sigmacloud.services) by mx-ginzinger.sigmacloud.services with esmtps (TLSv1.2:AES256-GCM-SHA384:256) (Exim 4.82_1-5b7a7c0-XX) (envelope-from ) id 1grKEI-00038r-0b; Wed, 06 Feb 2019 11:14:54 +0100 Received: from martin-laptop.buero.ginzinger.com (10.10.1.120) by exc1.buero.ginzinger.com (10.1.1.204) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1466.3; Wed, 6 Feb 2019 11:14:53 +0100 X-CTCH-RefID: str=0001.0A0B0209.5C5AB39E.002C,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0 From: Martin Kepplinger To: , , , , , , , , CC: , Melchior Franz , Manfred Schlaegl Subject: [PATCH] fbdev: mxsfb: implement FB_PRE_INIT_FB option Date: Wed, 6 Feb 2019 11:14:44 +0100 Message-ID: <20190206101444.26594-1-martin.kepplinger@ginzinger.com> X-Mailer: git-send-email 2.20.1 X-Originating-IP: [10.10.1.120] X-ClientProxiedBy: exc1.buero.ginzinger.com (10.1.1.204) To exc1.buero.ginzinger.com (10.1.1.204) X-EXCLAIMER-MD-ORIGINAL-SUBJECT: [NOSIG][NODISC][PATCH] fbdev: mxsfb: implement FB_PRE_INIT_FB option X-EXCLAIMER-MD-CONFIG: 9dd172f7-de2e-4231-b886-ec11f46e03b3 MIME-Version: 1.0 Sender: linux-fbdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Melchior Franz The FB_PRE_INIT_FB option keeps the kernel from reinitializing the display and prevents flickering during the transition from a bootloader splash screen to the kernel logo screen. Make this option available for the mxsfb driver. Signed-off-by: Melchior Franz Signed-off-by: Martin Kepplinger Signed-off-by: Manfred Schlaegl --- drivers/video/fbdev/Kconfig | 2 +- drivers/video/fbdev/mxsfb.c | 12 ++++++++++++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig index 58a9590c9db6..0e7ab29c9c70 100644 --- a/drivers/video/fbdev/Kconfig +++ b/drivers/video/fbdev/Kconfig @@ -2183,7 +2183,7 @@ config FB_EP93XX config FB_PRE_INIT_FB bool "Don't reinitialize, use bootloader's GDC/Display configuration" - depends on FB && FB_MB862XX_LIME + depends on FB && (FB_MB862XX_LIME || FB_MXS) ---help--- Select this option if display contents should be inherited as set by the bootloader. diff --git a/drivers/video/fbdev/mxsfb.c b/drivers/video/fbdev/mxsfb.c index 12c8bd1d24d5..a017200a16b3 100644 --- a/drivers/video/fbdev/mxsfb.c +++ b/drivers/video/fbdev/mxsfb.c @@ -181,6 +181,7 @@ struct mxsfb_info { const struct mxsfb_devdata *devdata; u32 sync; struct regulator *reg_lcd; + int pre_init; }; #define mxsfb_is_v3(host) (host->devdata->ipversion == 3) @@ -419,6 +420,12 @@ static int mxsfb_set_par(struct fb_info *fb_info) fb_info->fix.line_length = line_size; + if (host->pre_init) { + mxsfb_enable_controller(fb_info); + host->pre_init = 0; + return 0; + } + /* * It seems, you can't re-program the controller if it is still running. * This may lead into shifted pictures (FIFO issue?). @@ -931,6 +938,10 @@ static int mxsfb_probe(struct platform_device *pdev) if (IS_ERR(host->reg_lcd)) host->reg_lcd = NULL; +#if defined(CONFIG_FB_PRE_INIT_FB) + host->pre_init = 1; +#endif + fb_info->pseudo_palette = devm_kcalloc(&pdev->dev, 16, sizeof(u32), GFP_KERNEL); if (!fb_info->pseudo_palette) { @@ -963,6 +974,7 @@ static int mxsfb_probe(struct platform_device *pdev) mxsfb_enable_controller(fb_info); } + host->pre_init = 0; dev_info(&pdev->dev, "initialized\n"); return 0;