From patchwork Sat Oct 19 08:35:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 11199993 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 67605913 for ; Sat, 19 Oct 2019 08:36:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 45BD820872 for ; Sat, 19 Oct 2019 08:36:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="Jk5EBmYa" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728384AbfJSIgg (ORCPT ); Sat, 19 Oct 2019 04:36:36 -0400 Received: from mail-wr1-f65.google.com ([209.85.221.65]:40209 "EHLO mail-wr1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728416AbfJSIgY (ORCPT ); Sat, 19 Oct 2019 04:36:24 -0400 Received: by mail-wr1-f65.google.com with SMTP id o28so8548346wro.7 for ; Sat, 19 Oct 2019 01:36:22 -0700 (PDT) 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=qycHXMO6hwxhUdb3jdVqS6gIVNXR0dtaUr+q4ZsWEBE=; b=Jk5EBmYa+f25dVL0ytlmaRtf8WAVFhl1TWLYulD/cjGDX1wCaySBwWD/vh2NWZbHVD 5niPb2mYSBspLggl0tema5K8Qd8+JzAAcvvu2lPy3+1NRihUAq2JxJ+U490BS8+w0udd t4XfieezI2QS399OfGYDN0hIKV10tM5OK2EICaKM2qjVBAoJ4TJWV1ckCVAhKi4xVHVR QrENWpsMNxsrVai6eEP6BAsNmRZHafdwOW+Q7Y1XYH+rqy2dJEVhPp/9PkmRjJrViH5x tQvWbNZ6yFRV4KParbooJKpz3bzQ20Mn0F+ULmYO5KMaC4yAG2FyBZfAd3ofmJEjIwBm IcjQ== 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=qycHXMO6hwxhUdb3jdVqS6gIVNXR0dtaUr+q4ZsWEBE=; b=Xdv9EfW6kMXEM7YLaExxfiD6Bf5r1Hi0ylPjvQAoL52pywSv8cG/9Lc9Lto04UVzME CyEfQbJ9Jvm3tm5FBsDyc7MAHFNnuuF1uBFR9aiPvoED3iLQhJ/jmcsUgJ+EnOn9tnnd VfwH5NSStEzOJIzxeGgS3S9wM6n1BIWZFceKbHobZm8IBukG9G08uAU9LHfHYRs2DQYr 3Tt030wqb+cYTPpzRp16CJeLaRQ8vmDAA41AQLjNfWDe2bvnOA0HgdB5mMymioVIXRAO 1c2V4kTL1GNBFZZJRr9PsNXrFtPP3VEaCbk9cM0dU9uy1udY9MdrrQ+ipyj4jdzKIcvX El/g== X-Gm-Message-State: APjAAAV1ZdT9h04xS5xjZINHus9g4pi55p681uq0k8k5vQvCvuS2yvbE 4PHSzFZoY8hdSKdSuoPx7LVQsOnt9Wc= X-Google-Smtp-Source: APXvYqxL4ngNwJD3Ia6U3FUSz7NI06K8MQss3MsCYJfxqtNfTF2X+Kq18B1s3ij+8TKee2gNA8Mvcg== X-Received: by 2002:adf:fcc5:: with SMTP id f5mr10803495wrs.37.1571474182248; Sat, 19 Oct 2019 01:36:22 -0700 (PDT) Received: from debian-brgl.home ([2a01:cb1d:af:5b00:6d6c:8493:1ab5:dad7]) by smtp.gmail.com with ESMTPSA id u1sm7242627wmc.38.2019.10.19.01.36.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Oct 2019 01:36:21 -0700 (PDT) From: Bartosz Golaszewski To: Yoshinori Sato , Rich Felker , Lee Jones , Daniel Thompson , Jingoo Han , Bartlomiej Zolnierkiewicz , Linus Walleij , Andy Shevchenko , Jacopo Mondi Cc: linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v6 9/9] backlight: gpio: pull gpio_backlight_initial_power_state() into probe Date: Sat, 19 Oct 2019 10:35:56 +0200 Message-Id: <20191019083556.19466-10-brgl@bgdev.pl> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191019083556.19466-1-brgl@bgdev.pl> References: <20191019083556.19466-1-brgl@bgdev.pl> MIME-Version: 1.0 Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org 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 | 38 +++++++++--------------- 1 file changed, 14 insertions(+), 24 deletions(-) diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c index 7b411f6ee15a..4336db6bf6b5 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_get_curr_brightness(struct backlight_device *bl) @@ -60,41 +57,24 @@ 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_direction(gbl->gpiod) == 0 && - 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, init_brightness; + int ret, init_brightness, 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)) { @@ -115,7 +95,17 @@ 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_direction(gbl->gpiod) == 0 && + gpiod_get_value_cansleep(gbl->gpiod) == 0) + bl->props.power = FB_BLANK_POWERDOWN; + else + bl->props.power = FB_BLANK_UNBLANK; + bl->props.brightness = 1; init_brightness = gpio_backlight_get_curr_brightness(bl);