From patchwork Wed Jun 21 21:54:57 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 13287985 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 995CBC001DD for ; Wed, 21 Jun 2023 21:55:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1840910E356; Wed, 21 Jun 2023 21:55:11 +0000 (UTC) Received: from mail-ed1-x533.google.com (mail-ed1-x533.google.com [IPv6:2a00:1450:4864:20::533]) by gabe.freedesktop.org (Postfix) with ESMTPS id AE32010E356 for ; Wed, 21 Jun 2023 21:55:09 +0000 (UTC) Received: by mail-ed1-x533.google.com with SMTP id 4fb4d7f45d1cf-51878f8e541so7567679a12.3 for ; Wed, 21 Jun 2023 14:55:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shruggie-ro.20221208.gappssmtp.com; s=20221208; t=1687384506; x=1689976506; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=kRUDsn4e6Ks8YzmKCfn5h1mpk0f1GA6PVcpiiIMFAtA=; b=ryqDqOAnnAJv9G8ZbZBMXI5Qf+NLTe4Z9G/CWY3yA0+dio5cKumyowL69kJfe4FSZ4 3/YwzXdHBxwfWqgXBexKcev4SCbeY75p0+Quq+Bsmx0dkRqAKi2foN/NHk93KSSNpt2G 9valT+R/D0YupatdQ9mJ8e5ogQnivBeohbZwy6luFduk0m0SvbuZiIrjiL16lPrlLM2U MfxFXJLqzPuZB48nubuzvOwBk/aLqDI2j+FKXY3iB8oBsDhng/Hr87OGMFObUMd0MQdI SedfW0L6q9PhuH+pS1qiEl/qbActqTHvoDcdHM/LKVs+o4yDOGpAUSke/eC4IuFGqaGh C7gg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687384506; x=1689976506; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=kRUDsn4e6Ks8YzmKCfn5h1mpk0f1GA6PVcpiiIMFAtA=; b=YXvvmsmOn1nSwepHVNZcoMR8rInDjAnQ5joA4C64jEEBJr5HGUV0TvMAXRV9KILphB 2lAQjhtefq0YAMF3VO6Die8J1jEBJVlB1vFzoklZ8ymGZO3sEJgHOPEjIan1MYjJ7KiS usic14xKLuyv8C6k8B9FyKiJVjKQg8yecNdkE4Is7z8W+mNx8uR3leujfyIDghD2MckI UF0pDGg8oxaFFILG1N+TBD6N2O7nYwgrIuImfxocFfPZgaAC+HJqwZfaOndPChRmEeCr ZKIA4lEaoqYBg0bsxevdTRS9ofqZVJHsfgum9X6DGIt15z6GKZ9+DUc2cwkzULTlWFhD hj0Q== X-Gm-Message-State: AC+VfDxtaJEGESoV/RwPrPf+CIY26azPnMJNX/k+MjHgGE6TOLa3JIci CYqBAr+sbmhUQHzayG1tuvlr+348Vv0ylSofAI1bSA== X-Google-Smtp-Source: ACHHUZ68KU6zeF4KhP/4rSB+WCwcso3Hz0SCmqZuTCSqxgmUfmsCgyUVJ5ghWnoL72nCuOtxLztz5A== X-Received: by 2002:aa7:c3cc:0:b0:51a:4b53:e3f9 with SMTP id l12-20020aa7c3cc000000b0051a4b53e3f9mr7987253edr.31.1687384506197; Wed, 21 Jun 2023 14:55:06 -0700 (PDT) Received: from localhost.localdomain ([188.27.132.2]) by smtp.gmail.com with ESMTPSA id d16-20020aa7d5d0000000b0051a358a76c9sm3115417eds.72.2023.06.21.14.55.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Jun 2023 14:55:05 -0700 (PDT) From: Alexandru Ardelean To: dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org Subject: [PATCH v2 2/2] backlight: gpio_backlight: add new property default-brightness-level Date: Thu, 22 Jun 2023 00:54:57 +0300 Message-Id: <20230621215457.11297-2-alex@shruggie.ro> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230621215457.11297-1-alex@shruggie.ro> References: <20230621215457.11297-1-alex@shruggie.ro> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: daniel.thompson@linaro.org, pavel@ucw.cz, jingoohan1@gmail.com, deller@gmx.de, lee@kernel.org, conor+dt@kernel.org, Alexandru Ardelean , robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, Yannick Fertre Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Yannick Fertre Add new property to set a brightness by default at probe. Reviewed-by: Daniel Thompson Signed-off-by: Yannick Fertre Signed-off-by: Alexandru Ardelean --- Link to original patch: https://github.com/STMicroelectronics/linux/commit/c4067d7bd883c6fa14ffd49892c4ce663cdafe98 Changelog v1 -> v2: * https://lore.kernel.org/dri-devel/20230519200520.10657-1-alex@shruggie.ro/ * removed 'Reviewed-by: Philippe CORNU ' as requested * patch is now second patch of 2 (was first in series) * added 'Reviewed-by: Daniel Thompson ' drivers/video/backlight/gpio_backlight.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/video/backlight/gpio_backlight.c b/drivers/video/backlight/gpio_backlight.c index 6f78d928f054..d3fa3a8bef4d 100644 --- a/drivers/video/backlight/gpio_backlight.c +++ b/drivers/video/backlight/gpio_backlight.c @@ -53,6 +53,7 @@ static int gpio_backlight_probe(struct platform_device *pdev) struct backlight_device *bl; struct gpio_backlight *gbl; int ret, init_brightness, def_value; + u32 value; gbl = devm_kzalloc(dev, sizeof(*gbl), GFP_KERNEL); if (gbl == NULL) @@ -93,7 +94,11 @@ static int gpio_backlight_probe(struct platform_device *pdev) else bl->props.power = FB_BLANK_UNBLANK; - bl->props.brightness = 1; + ret = device_property_read_u32(dev, "default-brightness-level", &value); + if (!ret && value <= props.max_brightness) + bl->props.brightness = value; + else + bl->props.brightness = 1; init_brightness = backlight_get_brightness(bl); ret = gpiod_direction_output(gbl->gpiod, init_brightness);