From patchwork Thu May 14 19:09:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Ravnborg X-Patchwork-Id: 1290612 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pwm-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=ravnborg.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=OaZrLbTW; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49NLj05dLvz9sfR for ; Fri, 15 May 2020 05:10:28 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730286AbgENTKX (ORCPT ); Thu, 14 May 2020 15:10:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51184 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1730284AbgENTKW (ORCPT ); Thu, 14 May 2020 15:10:22 -0400 Received: from mail-lj1-x244.google.com (mail-lj1-x244.google.com [IPv6:2a00:1450:4864:20::244]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD888C061A0F; Thu, 14 May 2020 12:10:21 -0700 (PDT) Received: by mail-lj1-x244.google.com with SMTP id f18so4723558lja.13; Thu, 14 May 2020 12:10:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=uvAqoIVnlBgyd68hnn1WiT3rXHhwfxcl0UeJKweLhko=; b=OaZrLbTWdUNdE4LXccXwIoqLV+2ksJ4Yz7Tv7vBdYId/RUkl1J0RJkHGPtLE+qYQGD A3lwKWbkJx/maHhmD8hyeQvedIL+YgJAm5IIMnc/f7FcnwTB+mkaVDOussWdSjd3TC95 S4SVAwpqeGMuoL4PsU0pdB46yS0P/3VYKCz04GBoWP+uMYBLflp74lTTunGciS/ZNmI2 AEWlRbgNES13Gr1h6jAp6FjKHLxqsvKiEeYOrZJwoKwadRo0GU8h5epYANQi32oo8O7i QAF7LXsTMpCAxVGAamcGOH1pWHqo7ppeP4H5AKbRB2xrYCxVnfxd14kZBurnDchUwezT QTjQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=uvAqoIVnlBgyd68hnn1WiT3rXHhwfxcl0UeJKweLhko=; b=Ss7pwryxiCm60sPiT/rippAkBoNsVxr2Mnm1uzE/WqpGLnoAlSovMLbkQEbLbxB+Y7 a/EngUzVcdeLNPuvBQnsgIR5TI09sSAAJi4cKYVfFPwO6fDgS6l1qej6/nl38LwRaLuh yK6FOjWUFwPVoGG/8FYq+c5LgINwfiDmlroOGSxDFVBTAmPn1rr3s68JAFVQ2kEfQX4Z QPFuyRhU6ld/324UYTfuDmsf5v6oKOrto+r/F2m1WddN15itXDXSGF5in7rxv0I5cnp0 tIybGY9rYi4MwGkFKrJrl8YYO46aE/EojxXZQZ39hAzL5iZXZs3HGrpCW3xgm1DISAmR 1x7A== X-Gm-Message-State: AOAM530Rar9j/zpOVtqKroRi3bxdVjEkz7SKwV+NYO+9saamAIeyaS+t ycuFWRfMXuf/Z0WbdwEFKFM= X-Google-Smtp-Source: ABdhPJz1wwUxhhbKyXbGPZbBiIEsG4KEM76cKxu9cIh2796pYawzu/mXE3iTzXyvDvGKAApNYB578A== X-Received: by 2002:a2e:8805:: with SMTP id x5mr3852963ljh.223.1589483420269; Thu, 14 May 2020 12:10:20 -0700 (PDT) Received: from saturn.lan ([2a00:fd00:805f:db00:8d23:71d:e677:1c7c]) by smtp.gmail.com with ESMTPSA id q30sm2362958lfd.32.2020.05.14.12.10.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 14 May 2020 12:10:19 -0700 (PDT) From: Sam Ravnborg To: dri-devel@lists.freedesktop.org, Jingoo Han , Lee Jones , Daniel Thompson Cc: Allison Randal , Andy Gross , Bartlomiej Zolnierkiewicz , Bjorn Andersson , Daniel Vetter , David Airlie , Douglas Anderson , Enrico Weigelt , Jani Nikula , Jonathan Corbet , Jyri Sarha , Kate Stewart , Kefeng Wang , Laurent Pinchart , Linus Walleij , linux-arm-msm@vger.kernel.org, linux-pwm@vger.kernel.org, Maarten Lankhorst , Maxime Ripard , Michael Hennerich , patches@opensource.cirrus.com, Russell King , Sam Ravnborg , Support Opensource , Thierry Reding , Thomas Gleixner , Thomas Zimmermann , Tomi Valkeinen , Uwe Kleine Konig , Zheng Bin Subject: [PATCH v1 03/18] video: amba-clcd: use devm_of_find_backlight Date: Thu, 14 May 2020 21:09:46 +0200 Message-Id: <20200514191001.457441-4-sam@ravnborg.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200514191001.457441-1-sam@ravnborg.org> References: <20200514191001.457441-1-sam@ravnborg.org> MIME-Version: 1.0 Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org Look up backlight device using devm_of_find_backlight(). This simplifies the code and prevents us from hardcoding the node name in the driver. Signed-off-by: Sam Ravnborg Cc: Russell King Cc: Sam Ravnborg Cc: Bartlomiej Zolnierkiewicz Cc: Daniel Vetter Cc: Linus Walleij Cc: Jani Nikula Cc: Douglas Anderson --- drivers/video/fbdev/amba-clcd.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-) diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c index c3d55fc6c4e0..b7682de412d8 100644 --- a/drivers/video/fbdev/amba-clcd.c +++ b/drivers/video/fbdev/amba-clcd.c @@ -602,20 +602,17 @@ static int clcdfb_snprintf_mode(char *buf, int size, struct fb_videomode *mode) mode->refresh); } -static int clcdfb_of_get_backlight(struct device_node *panel, +static int clcdfb_of_get_backlight(struct device *dev, struct clcd_panel *clcd_panel) { - struct device_node *backlight; + struct backlight_device *backlight; - /* Look up the optional backlight phandle */ - backlight = of_parse_phandle(panel, "backlight", 0); - if (backlight) { - clcd_panel->backlight = of_find_backlight_by_node(backlight); - of_node_put(backlight); + /* Look up the optional backlight device */ + backlight = devm_of_find_backlight(dev); + if (IS_ERR(backlight)) + return PTR_ERR(backlight); - if (!clcd_panel->backlight) - return -EPROBE_DEFER; - } + clcd_panel->backlight = backlight; return 0; } @@ -717,7 +714,7 @@ static int clcdfb_of_init_display(struct clcd_fb *fb) if (!panel) return -ENODEV; - err = clcdfb_of_get_backlight(panel, fb->panel); + err = clcdfb_of_get_backlight(&fb->dev->dev, fb->panel); if (err) return err;