From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Thompson Date: Wed, 24 Jul 2019 11:12:22 +0000 Subject: Re: [PATCH v3 2/7] backlight: gpio: simplify the platform data handling Message-Id: <20190724111222.6wcq72btthz4l3r7@holly.lan> List-Id: References: <20190724082508.27617-1-brgl@bgdev.pl> <20190724082508.27617-3-brgl@bgdev.pl> In-Reply-To: <20190724082508.27617-3-brgl@bgdev.pl> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Bartosz Golaszewski Cc: linux-fbdev@vger.kernel.org, Rich Felker , Yoshinori Sato , Bartlomiej Zolnierkiewicz , Jingoo Han , linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Bartosz Golaszewski , Andy Shevchenko , Lee Jones On Wed, Jul 24, 2019 at 10:25:03AM +0200, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski > > Now that the last user of platform data (sh ecovec24) defines a proper > GPIO lookup and sets the 'default-on' device property, we can drop the > platform_data-specific GPIO handling and unify a big chunk of code. > > The only field used from the platform data is now the fbdev pointer. > > Signed-off-by: Bartosz Golaszewski Reviewed-by: Daniel Thompson > --- > drivers/video/backlight/gpio_backlight.c | 64 +++++------------------- > 1 file changed, 13 insertions(+), 51 deletions(-) > > diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c > index e84f3087e29f..01262186fa1e 100644 > --- a/drivers/video/backlight/gpio_backlight.c > +++ b/drivers/video/backlight/gpio_backlight.c > @@ -55,30 +55,6 @@ static const struct backlight_ops gpio_backlight_ops = { > .check_fb = gpio_backlight_check_fb, > }; > > -static int gpio_backlight_probe_dt(struct platform_device *pdev, > - struct gpio_backlight *gbl) > -{ > - struct device *dev = &pdev->dev; > - enum gpiod_flags flags; > - int ret; > - > - gbl->def_value = device_property_read_bool(dev, "default-on"); > - flags = gbl->def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW; > - > - gbl->gpiod = devm_gpiod_get(dev, NULL, flags); > - if (IS_ERR(gbl->gpiod)) { > - ret = PTR_ERR(gbl->gpiod); > - > - if (ret != -EPROBE_DEFER) { > - dev_err(dev, > - "Error: The gpios parameter is missing or invalid.\n"); > - } > - return ret; > - } > - > - return 0; > -} > - > static int gpio_backlight_probe(struct platform_device *pdev) > { > struct gpio_backlight_platform_data *pdata > @@ -86,6 +62,7 @@ static int gpio_backlight_probe(struct platform_device *pdev) > struct backlight_properties props; > struct backlight_device *bl; > struct gpio_backlight *gbl; > + enum gpiod_flags flags; > int ret; > > gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL); > @@ -94,35 +71,20 @@ static int gpio_backlight_probe(struct platform_device *pdev) > > gbl->dev = &pdev->dev; > > - if (pdev->dev.fwnode) { > - ret = gpio_backlight_probe_dt(pdev, gbl); > - if (ret) > - return ret; > - } else if (pdata) { > - /* > - * Legacy platform data GPIO retrieveal. Do not expand > - * the use of this code path, currently only used by one > - * SH board. > - */ > - unsigned long flags = GPIOF_DIR_OUT; > - > + if (pdata) > gbl->fbdev = pdata->fbdev; > - gbl->def_value = pdata->def_value; > - flags |= gbl->def_value ? GPIOF_INIT_HIGH : GPIOF_INIT_LOW; > - > - ret = devm_gpio_request_one(gbl->dev, pdata->gpio, flags, > - pdata ? pdata->name : "backlight"); > - if (ret < 0) { > - dev_err(&pdev->dev, "unable to request GPIO\n"); > - return ret; > + > + gbl->def_value = device_property_read_bool(&pdev->dev, "default-on"); > + flags = gbl->def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW; > + > + gbl->gpiod = devm_gpiod_get(&pdev->dev, NULL, flags); > + if (IS_ERR(gbl->gpiod)) { > + ret = PTR_ERR(gbl->gpiod); > + if (ret != -EPROBE_DEFER) { > + dev_err(&pdev->dev, > + "Error: The gpios parameter is missing or invalid.\n"); > } > - gbl->gpiod = gpio_to_desc(pdata->gpio); > - if (!gbl->gpiod) > - return -EINVAL; > - } else { > - dev_err(&pdev->dev, > - "failed to find platform data or device tree node.\n"); > - return -ENODEV; > + return ret; > } > > memset(&props, 0, sizeof(props)); > -- > 2.21.0 > 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=-8.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 342EEC7618B for ; Wed, 24 Jul 2019 11:12:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F1B842190F for ; Wed, 24 Jul 2019 11:12:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="RmdGRok0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727460AbfGXLM2 (ORCPT ); Wed, 24 Jul 2019 07:12:28 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:44276 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726622AbfGXLM2 (ORCPT ); Wed, 24 Jul 2019 07:12:28 -0400 Received: by mail-wr1-f66.google.com with SMTP id p17so46494231wrf.11 for ; Wed, 24 Jul 2019 04:12:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=3Mf8w5hPQ8vkoVY1yIn2y097hPhW6Wz39EJFUer/8/I=; b=RmdGRok0fXh/6pwCnKE20oo1XLTAnNpBQ/haiHKDt849cme4tzL7w6Uy1QaQVOeraA kMQpxu6aEqhCWOvu9huGYWkRbYFu0UsdSxnrBRtjeqJ6f1M12j43TRDv+Trm3V5Dd2ZQ FEeqmte9nGupLrujUrDcfuhTbB+/Un26j7BM6cSbLsTTuxKUET2fMxOsat3mPOonuh0m jyPqjTQiF2GvoPNrKGJMLG94+hEiomyQ/71hbuMYwy43WgZtGoY+Kwi9b/S4+DH1+Nvn MqfRXgoQuMT23Xv/h+9H1/UMJQxy6Ewu8liXu08KkLR2jZPS6CpACmme/592N09VbnC3 FlSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=3Mf8w5hPQ8vkoVY1yIn2y097hPhW6Wz39EJFUer/8/I=; b=HhG3wpj+0fR5qZkJLdX3/ToBHffIE51P6+KoW2/vI/Y2bxpTBNgZ6MIvASOxORahxc uR0QL4urMgudurUQrKYVk0eHrd+PlKmOWU0e6O1wIzbKLo0NfWowT73F/oFwtoA0+U7+ basJ9tUng2c1rxpbEPsPSCP9WBWbCdKVxl/wB2UeDKdyOSyRDauTi8q7HBQ8a1oCAI3D NWEDfKgqO1R0hT6wQ9DEaujf+0e71ZkGJfYp6vLxXJgyvnlkee2+E2Za4F9YX9LTIf3r 8qkfbFhkIQ+ZVUXV9cn+iGHhL3c4O1C5qVwlYIcsTZiGv/T7JKT3rKJJd13X0E2D1U2s Tg5g== X-Gm-Message-State: APjAAAVKk8V+ziogEOv1qZvqQb8fDGNsVRkr35tzHATyVOg4ANQJkxZd eJcVejX4elZDAddC/ul0R2zyXQ== X-Google-Smtp-Source: APXvYqyGihY987W1wtDENE5DlizL290ek5v9J4SXoQGdoqEePNMqO7vAu54DHqwKZ688fzGQ2kh5wA== X-Received: by 2002:adf:f812:: with SMTP id s18mr15180099wrp.32.1563966745286; Wed, 24 Jul 2019 04:12:25 -0700 (PDT) Received: from holly.lan (cpc141214-aztw34-2-0-cust773.18-1.cable.virginm.net. [86.9.19.6]) by smtp.gmail.com with ESMTPSA id j33sm89874753wre.42.2019.07.24.04.12.23 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Wed, 24 Jul 2019 04:12:24 -0700 (PDT) Date: Wed, 24 Jul 2019 12:12:22 +0100 From: Daniel Thompson To: Bartosz Golaszewski Cc: Yoshinori Sato , Rich Felker , Lee Jones , Jingoo Han , Bartlomiej Zolnierkiewicz , Linus Walleij , Andy Shevchenko , linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, Bartosz Golaszewski Subject: Re: [PATCH v3 2/7] backlight: gpio: simplify the platform data handling Message-ID: <20190724111222.6wcq72btthz4l3r7@holly.lan> References: <20190724082508.27617-1-brgl@bgdev.pl> <20190724082508.27617-3-brgl@bgdev.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190724082508.27617-3-brgl@bgdev.pl> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jul 24, 2019 at 10:25:03AM +0200, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski > > Now that the last user of platform data (sh ecovec24) defines a proper > GPIO lookup and sets the 'default-on' device property, we can drop the > platform_data-specific GPIO handling and unify a big chunk of code. > > The only field used from the platform data is now the fbdev pointer. > > Signed-off-by: Bartosz Golaszewski Reviewed-by: Daniel Thompson > --- > drivers/video/backlight/gpio_backlight.c | 64 +++++------------------- > 1 file changed, 13 insertions(+), 51 deletions(-) > > diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c > index e84f3087e29f..01262186fa1e 100644 > --- a/drivers/video/backlight/gpio_backlight.c > +++ b/drivers/video/backlight/gpio_backlight.c > @@ -55,30 +55,6 @@ static const struct backlight_ops gpio_backlight_ops = { > .check_fb = gpio_backlight_check_fb, > }; > > -static int gpio_backlight_probe_dt(struct platform_device *pdev, > - struct gpio_backlight *gbl) > -{ > - struct device *dev = &pdev->dev; > - enum gpiod_flags flags; > - int ret; > - > - gbl->def_value = device_property_read_bool(dev, "default-on"); > - flags = gbl->def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW; > - > - gbl->gpiod = devm_gpiod_get(dev, NULL, flags); > - if (IS_ERR(gbl->gpiod)) { > - ret = PTR_ERR(gbl->gpiod); > - > - if (ret != -EPROBE_DEFER) { > - dev_err(dev, > - "Error: The gpios parameter is missing or invalid.\n"); > - } > - return ret; > - } > - > - return 0; > -} > - > static int gpio_backlight_probe(struct platform_device *pdev) > { > struct gpio_backlight_platform_data *pdata = > @@ -86,6 +62,7 @@ static int gpio_backlight_probe(struct platform_device *pdev) > struct backlight_properties props; > struct backlight_device *bl; > struct gpio_backlight *gbl; > + enum gpiod_flags flags; > int ret; > > gbl = devm_kzalloc(&pdev->dev, sizeof(*gbl), GFP_KERNEL); > @@ -94,35 +71,20 @@ static int gpio_backlight_probe(struct platform_device *pdev) > > gbl->dev = &pdev->dev; > > - if (pdev->dev.fwnode) { > - ret = gpio_backlight_probe_dt(pdev, gbl); > - if (ret) > - return ret; > - } else if (pdata) { > - /* > - * Legacy platform data GPIO retrieveal. Do not expand > - * the use of this code path, currently only used by one > - * SH board. > - */ > - unsigned long flags = GPIOF_DIR_OUT; > - > + if (pdata) > gbl->fbdev = pdata->fbdev; > - gbl->def_value = pdata->def_value; > - flags |= gbl->def_value ? GPIOF_INIT_HIGH : GPIOF_INIT_LOW; > - > - ret = devm_gpio_request_one(gbl->dev, pdata->gpio, flags, > - pdata ? pdata->name : "backlight"); > - if (ret < 0) { > - dev_err(&pdev->dev, "unable to request GPIO\n"); > - return ret; > + > + gbl->def_value = device_property_read_bool(&pdev->dev, "default-on"); > + flags = gbl->def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW; > + > + gbl->gpiod = devm_gpiod_get(&pdev->dev, NULL, flags); > + if (IS_ERR(gbl->gpiod)) { > + ret = PTR_ERR(gbl->gpiod); > + if (ret != -EPROBE_DEFER) { > + dev_err(&pdev->dev, > + "Error: The gpios parameter is missing or invalid.\n"); > } > - gbl->gpiod = gpio_to_desc(pdata->gpio); > - if (!gbl->gpiod) > - return -EINVAL; > - } else { > - dev_err(&pdev->dev, > - "failed to find platform data or device tree node.\n"); > - return -ENODEV; > + return ret; > } > > memset(&props, 0, sizeof(props)); > -- > 2.21.0 > From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Thompson Subject: Re: [PATCH v3 2/7] backlight: gpio: simplify the platform data handling Date: Wed, 24 Jul 2019 12:12:22 +0100 Message-ID: <20190724111222.6wcq72btthz4l3r7@holly.lan> References: <20190724082508.27617-1-brgl@bgdev.pl> <20190724082508.27617-3-brgl@bgdev.pl> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-wr1-x444.google.com (mail-wr1-x444.google.com [IPv6:2a00:1450:4864:20::444]) by gabe.freedesktop.org (Postfix) with ESMTPS id A47626E516 for ; Wed, 24 Jul 2019 11:12:26 +0000 (UTC) Received: by mail-wr1-x444.google.com with SMTP id c2so43307971wrm.8 for ; Wed, 24 Jul 2019 04:12:26 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20190724082508.27617-3-brgl@bgdev.pl> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Bartosz Golaszewski Cc: linux-fbdev@vger.kernel.org, Rich Felker , Yoshinori Sato , Bartlomiej Zolnierkiewicz , Jingoo Han , linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Bartosz Golaszewski , Andy Shevchenko , Lee Jones List-Id: dri-devel@lists.freedesktop.org T24gV2VkLCBKdWwgMjQsIDIwMTkgYXQgMTA6MjU6MDNBTSArMDIwMCwgQmFydG9zeiBHb2xhc3pl d3NraSB3cm90ZToKPiBGcm9tOiBCYXJ0b3N6IEdvbGFzemV3c2tpIDxiZ29sYXN6ZXdza2lAYmF5 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