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 94B9DC433FE for ; Sat, 29 Oct 2022 18:43:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229670AbiJ2Sn1 (ORCPT ); Sat, 29 Oct 2022 14:43:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39910 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229588AbiJ2SnZ (ORCPT ); Sat, 29 Oct 2022 14:43:25 -0400 Received: from mail-oa1-x2c.google.com (mail-oa1-x2c.google.com [IPv6:2001:4860:4864:20::2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B650C40BC6 for ; Sat, 29 Oct 2022 11:43:23 -0700 (PDT) Received: by mail-oa1-x2c.google.com with SMTP id 586e51a60fabf-13c2cfd1126so9707083fac.10 for ; Sat, 29 Oct 2022 11:43:23 -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=SjDvVlPBZ2PiKAi+9C6+buDBdSeaLu2FPV7dopY6H2t/EzsyqOVceneXRO6uq7jVZU 7nTEiRra7/HOgK/ro0ucbD+RRKmzb/tphWhcwBiGB7EU6J2ZZDGpNSZL6kmgS7mq+3El lTSSOnxPfeZtvHzDA93lggQ4RJRCuOEvZYJTvVUr0pwMNRAS7iEbFSPK7+DzPW3I2O3D ggQ2ntiR+8hiVBqmmJAmPQNmwUALUoAVGod0ql2y0WM/rQOcKO3EJgVKIUB45fIEvten aBBJAsp021jcg92bFUbd+jUKm4PVPO6UVb9QZpz/+JY+5FH12iI25zfO8aL8aHXBaV3b Wrhw== 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=mcWtEI3c24yOmi38flJ86lT8ObGdAeRmL1yOnMyNVgX52P2XJUC6atVVnEFLYi7kV6 ynNsOpqW3JuDWzxx7rzmg7fLD8EuqR2TOxIXCiTp8fBz+7PPwuSLXUHtwRYd3mi4Ubfg Vji31qVNrMuOixQOvqy4yg9c5yRgymzfE9EF/ic9jUKJr+Nu5r3Sh9gfI65yAZ2dSyfO X5r2wxhWtycUMn/IFYZMDFATvccHzcwkqHf54VxfFVjx4l3NSVRQyceqLvFq6YsjiDgC SzxQeB4VvpM+bGLAOSHGZGQdvu3FB3PDdJv9l1cI+2EVwEIw+vqeG64TG8ivwXtecvRm afMQ== X-Gm-Message-State: ACrzQf2tltWjfSoLEnxISYk9LgyJQ0yFBBgdSfFzQa+QNL33DuUZxVvS qzbNma69KJMXcgHoaT+d488oE5+p0ywzm2Sj X-Google-Smtp-Source: AMsMyM50ufWSgBjfzZB6/E6vwfiM1/oZHheFjGzT0+KACVd090SUDpidYuUQA/FCYl90RsFjrF83QA== X-Received: by 2002:a05:6870:612c:b0:132:a4d3:e0d8 with SMTP id s44-20020a056870612c00b00132a4d3e0d8mr2970057oae.95.1667069002990; Sat, 29 Oct 2022 11:43:22 -0700 (PDT) Received: from antonio-Lenovo-Legion-5-15IMH05H.multilaserwifi.com.br ([45.163.246.1]) by smtp.googlemail.com with ESMTPSA id o22-20020a9d7656000000b006619533d1ddsm855436otl.76.2022.10.29.11.43.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 29 Oct 2022 11:43:22 -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 15:42:55 -0300 Message-Id: <20221029184255.24041-1-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