From patchwork Mon Oct 7 03:32:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 11176887 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 F11291862 for ; Mon, 7 Oct 2019 07:02:59 +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 D98292246F for ; Mon, 7 Oct 2019 07:02:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D98292246F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl 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 112316E4B5; Mon, 7 Oct 2019 07:01:59 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pg1-x541.google.com (mail-pg1-x541.google.com [IPv6:2607:f8b0:4864:20::541]) by gabe.freedesktop.org (Postfix) with ESMTPS id 014346E452 for ; Mon, 7 Oct 2019 03:32:12 +0000 (UTC) Received: by mail-pg1-x541.google.com with SMTP id i14so7299152pgt.11 for ; Sun, 06 Oct 2019 20:32:12 -0700 (PDT) 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=v4a+pKVTYSrGaRJIHf88S7PAjoi+WG4Wfk9hIUcxXSg=; b=ibRMAO4hB2t+R4XYFkZ1LqR7afk5pVbV+nr/g204VVpEgoUAFVeBK8S/02Djjopqe0 5t64FiOMipZDp4/GuAVEZbbmERX3rSTP6yM4F+nyakHuaeElXxGoqJHaYrBZswtUW0NM 9gxGAcQitpknhAznW3oOBX4wpwej8CjK/0UDkTLarw+Qnlnj2TbzQoTYpU5nbthALse3 f6IzFGPtZvh6qIrHt12PyIPGo6szn6MIx+hA0rcW/HLoP/cifISUYSUJMZF6++iKVpE3 ueRIaEorubaeFgWBDvLtt1EXvdBNwHD4dFmf4TvA6DukW5yx/hZC9AwD07CAZ8qMocxQ easg== X-Gm-Message-State: APjAAAVGoBmz3okPe+DqrF8uGtz9xVsH9aOWQBARmCdeE+F9UT4r/riU 7LaVrf17o4jHFHv/i42mfZiMEQ== X-Google-Smtp-Source: APXvYqxJi6Cn38KU2ldDEqD3uN4eN8sBJwkVwzMxJCScyN7v5yPIeq7dl+xAxIUxlchljuW1E7ZgqA== X-Received: by 2002:a63:705b:: with SMTP id a27mr27756444pgn.136.1570419132502; Sun, 06 Oct 2019 20:32:12 -0700 (PDT) Received: from debian-brgl.local (96-95-220-76-static.hfc.comcastbusiness.net. [96.95.220.76]) by smtp.gmail.com with ESMTPSA id x10sm16377720pfr.44.2019.10.06.20.32.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 06 Oct 2019 20:32:12 -0700 (PDT) From: Bartosz Golaszewski To: Yoshinori Sato , Rich Felker , Lee Jones , Daniel Thompson , Jingoo Han , Bartlomiej Zolnierkiewicz , Linus Walleij , Andy Shevchenko , Jacopo Mondi Subject: [PATCH v5 7/7] backlight: gpio: pull gpio_backlight_initial_power_state() into probe Date: Mon, 7 Oct 2019 05:32:00 +0200 Message-Id: <20191007033200.13443-8-brgl@bgdev.pl> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191007033200.13443-1-brgl@bgdev.pl> References: <20191007033200.13443-1-brgl@bgdev.pl> MIME-Version: 1.0 X-Mailman-Approved-At: Mon, 07 Oct 2019 07:01:51 +0000 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=v4a+pKVTYSrGaRJIHf88S7PAjoi+WG4Wfk9hIUcxXSg=; b=VEhWSNZoLO5WHHbpp9caxeGXuImosevibbsBdB/CmdKiB1x1QaJiw3PM+vtD47onTj YnRJWOaxfiYOZMGKnNbIAnpk+Lkq3FitSuXfKNWTeVjsYnLhroWVQs+X9ZiUO38IcwTd rYYrkk7IaNSq5w6fCEOUfRmZ9UZ8BXM1z/VvKLUdDa5+ITtgJ6i795wC/Ax32hcUvskA 5XpcsN84YILPA2nLpfRifCQHKvAQu0rAFy8Ro1p1OrvG8Ax57GMGJEO+PYc96po6eCAp 6cQLwl1Rsh7FmaNNg7cNvfCg8BiyO0ggdLaZlKDi4Ouwzk9EVF/CUd28ES5S5X3zjTX3 ccJw== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Bartosz Golaszewski , linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-sh@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Bartosz Golaszewski The probe function in the gpio-backlight driver is quite short. If we pull gpio_backlight_initial_power_state() into probe we can drop two more fields from struct gpio_backlight and shrink the driver code. Signed-off-by: Bartosz Golaszewski Acked-by: Daniel Thompson --- drivers/video/backlight/gpio_backlight.c | 37 +++++++++--------------- 1 file changed, 13 insertions(+), 24 deletions(-) diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c index 6247687b6330..407d4eaafc5c 100644 --- a/drivers/video/backlight/gpio_backlight.c +++ b/drivers/video/backlight/gpio_backlight.c @@ -17,11 +17,8 @@ #include struct gpio_backlight { - struct device *dev; struct device *fbdev; - struct gpio_desc *gpiod; - int def_value; }; static int gpio_backlight_update_status(struct backlight_device *bl) @@ -53,41 +50,24 @@ static const struct backlight_ops gpio_backlight_ops = { .check_fb = gpio_backlight_check_fb, }; -static int gpio_backlight_initial_power_state(struct gpio_backlight *gbl) -{ - struct device_node *node = gbl->dev->of_node; - - /* Not booted with device tree or no phandle link to the node */ - if (!node || !node->phandle) - return gbl->def_value ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; - - /* if the enable GPIO is disabled, do not enable the backlight */ - if (gpiod_get_value_cansleep(gbl->gpiod) == 0) - return FB_BLANK_POWERDOWN; - - return FB_BLANK_UNBLANK; -} - - static int gpio_backlight_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct gpio_backlight_platform_data *pdata = dev_get_platdata(dev); + struct device_node *of_node = dev->of_node; struct backlight_properties props; struct backlight_device *bl; struct gpio_backlight *gbl; - int ret; + int ret, def_value; gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL); if (gbl == NULL) return -ENOMEM; - gbl->dev = dev; - if (pdata) gbl->fbdev = pdata->fbdev; - gbl->def_value = device_property_read_bool(dev, "default-on"); + def_value = device_property_read_bool(dev, "default-on"); gbl->gpiod = devm_gpiod_get(dev, NULL, GPIOD_ASIS); if (IS_ERR(gbl->gpiod)) { @@ -109,7 +89,16 @@ static int gpio_backlight_probe(struct platform_device *pdev) return PTR_ERR(bl); } - bl->props.power = gpio_backlight_initial_power_state(gbl); + /* Set the initial power state */ + if (!of_node || !of_node->phandle) + /* Not booted with device tree or no phandle link to the node */ + bl->props.power = def_value ? FB_BLANK_UNBLANK + : FB_BLANK_POWERDOWN; + else if (gpiod_get_value_cansleep(gbl->gpiod) == 0) + bl->props.power = FB_BLANK_POWERDOWN; + else + bl->props.power = FB_BLANK_UNBLANK; + bl->props.brightness = 1; backlight_update_status(bl);