From nobody Wed Apr 8 21:16:45 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D3A76C433FE for ; Sat, 29 Oct 2022 18:49:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229719AbiJ2StD (ORCPT ); Sat, 29 Oct 2022 14:49:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46902 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229441AbiJ2StB (ORCPT ); Sat, 29 Oct 2022 14:49:01 -0400 Received: from mail-oa1-x33.google.com (mail-oa1-x33.google.com [IPv6:2001:4860:4864:20::33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8A3E24523F for ; Sat, 29 Oct 2022 11:49:00 -0700 (PDT) Received: by mail-oa1-x33.google.com with SMTP id 586e51a60fabf-13ba86b5ac0so9776889fac.1 for ; Sat, 29 Oct 2022 11:49:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=57RVFwJZ3iFyz/7pgcHKldBgiU0NMfJt4GoVXyg5tyw=; b=UmpE5fSWtp7oajWqEDBMnGKOSdYRlUjlCvONnEviqRMM5dChgSO3aEmhSQGMMCfW8A LdZyzL9YMoDOcDj6QecWqPEvDvATZKmXz79TjnZYp5sRJLvf0CqmxBdu6uqLTbW3CKZt Q1jdYGLgsrcVQsYvOQU0Qhkk/HGLQ4Udygmv3tx7Y1rNs+t9EtZGU9L5Q5w5iZUVgaoF PmP/cqOnpuPN5pW2helMx730eN6h2emtYVBqiq/bltkJNoeKp2YQ3dN/N9pVW6mbfhtn SN1hBQcEYqQA6WQgH1n9LXmZLoS9UB8uNWlV1YLLtr/4U/LA6tJhIOvGwZDgHU3IQsg1 NJug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=57RVFwJZ3iFyz/7pgcHKldBgiU0NMfJt4GoVXyg5tyw=; b=GtmwCTtw0f6QGlcn+KrnrGI3YLvpnwXwOmOgpg5JqyriZF5vHMbCQ2xgFG0ijsdz28 8U4mMrRQwqkLuqI+yVqz5FiZL4fXJyx2cJXeYi63ydbJ5SR5AQLowxEW4UvFvPdxKjya B5TyBPDQ/o9EvriBIJDHnBL5E7epTIPFqcOXUmZ0xqRHEcCvb8y+7UnTHg4hcFstKdyZ c6T/Vw96i4Ec/cZABPXMfpX/3u0pxtu17ijjP8SylznJeOQW/8Ac3ZnjWag6uRDMiFFa I42Mv5x5v6TMmcoCP8Jz7PM4a++pkCOT7jzevKHlYhz3MDhZfpwxmB6MM1vDMhqtKY9i UIkw== X-Gm-Message-State: ACrzQf3b2lHxwkbNCOLtnWO2f2HK77JuhImIAivD16SGZzcrsLIWUO0y e0LVD6QDTnsGjs6v28VZzcfQF/ZlUtXdwD/Q X-Google-Smtp-Source: AMsMyM6gxp24dY1reFhIf12V9j7++47EFrSvA6JaTa/RQdLSoSvclTEVkuhzvfrgvmZmhqIDRpLyYw== X-Received: by 2002:a05:6870:9627:b0:136:c323:2ad8 with SMTP id d39-20020a056870962700b00136c3232ad8mr12328976oaq.259.1667069339786; Sat, 29 Oct 2022 11:48:59 -0700 (PDT) Received: from antonio-Lenovo-Legion-5-15IMH05H.multilaserwifi.com.br ([45.163.246.1]) by smtp.googlemail.com with ESMTPSA id q11-20020a4a6c0b000000b0049602fb9b4csm741898ooc.46.2022.10.29.11.48.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 29 Oct 2022 11:48:59 -0700 (PDT) From: antoniospg To: linux-kernel@vger.kernel.org Cc: antoniospg , Ben Skeggs , Karol Herbst , Lyude Paul , David Airlie , Daniel Vetter , dri-devel@lists.freedesktop.org (open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS), nouveau@lists.freedesktop.org (open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS) Subject: [PATCH] drm/nouveau: Adding support to control backlight using bl_power for nva3. Date: Sat, 29 Oct 2022 15:48:50 -0300 Message-Id: <20221029184851.25340-1-antoniospg100@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Test plan: * Turn off: echo 1 > /sys/class/backlight/nv_backlight/bl_power * Turn on: echo 0 > /sys/class/backlight/nv_backlight/bl_power Signed-off-by: antoniospg --- drivers/gpu/drm/nouveau/nouveau_backlight.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c b/drivers/gpu/drm/= nouveau/nouveau_backlight.c index a2141d3d9b1d..855d0ce9f7fa 100644 --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c @@ -263,7 +263,16 @@ nva3_set_intensity(struct backlight_device *bd) u32 div, val; =20 div =3D nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or)); - val =3D (bd->props.brightness * div) / 100; + + switch (bd->props.power) { + case FB_BLANK_UNBLANK: + val =3D (bd->props.brightness * div) / 100; + break; + default: + val =3D 0; + break; + } + if (div) { nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or), val | --=20 2.25.1