From patchwork Sun May 26 10:51:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Patrick Gansterer X-Patchwork-Id: 13674247 Received: from mx107.easyname.com (mx107.easyname.com [217.74.15.3]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 60BD8D524; Sun, 26 May 2024 11:10:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.74.15.3 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716721842; cv=none; b=kgH0hRmNFB7OZcVWRn59wfZn1yb/6appc/7y90hyBEi0SY1xTNzpHMvDTvJwEpHW6EPS/Zzazf+qX48TvvCOrywjsJzLf8JXwY7Wdd3PTXrrukdpeRWU7VemXbMlCt8lpb/ulFyv9V6Xth9YUJ1vWppS/Y2cOqfa1ZzMjNOAeB4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716721842; c=relaxed/simple; bh=FSzONcmAL58vinmBF8IEjcRWq/HhTFkgIH7TtQ8hLHA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=F4oJZNSwKLdJFFXJpvmlpnjhUKgaeMLSxPeoGXa4b3hlFaHuaBUKZj2I5sw98C8FsfV4TxUxdtsZk2coWUYzjWA5iWqfW7alVnNWN6xqvSwjDgZmimugxmOIpvnFQnIcfkhCwpy57HPjbwndV0vXKLu9gNpV1+q0BAvq6jOXGHg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=paroga.com; spf=pass smtp.mailfrom=paroga.com; dkim=pass (2048-bit key) header.d=paroga.com header.i=@paroga.com header.b=eVMliy08; dkim=pass (2048-bit key) header.d=paroga.com header.i=@paroga.com header.b=eVMliy08; arc=none smtp.client-ip=217.74.15.3 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=paroga.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=paroga.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=paroga.com header.i=@paroga.com header.b="eVMliy08"; dkim=pass (2048-bit key) header.d=paroga.com header.i=@paroga.com header.b="eVMliy08" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=paroga.com; s=easyname; h=Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject :Cc:To:From:Sender:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=3aXGfsIt9R394loRp+3WF8arPd+Dmc7dX8LDibAPSlU=; b=eVMliy088Ng/ln3LbHY2H9U50a hl5Lt0SocfhopF/klQMQTmR1AXoG6Z826v9P7vDe+wJp2R9VDiMgVAbvgAw0UbL1auFwWSCM+TKJ9 1LLUamA8Shwza+nl7mTMPFFBRC85G/xNsJMy5LzQMWq5WHJc4MD2X53BGmyLoUAWuu69H6ZXArIhD FVA7bmrL7LTAfkY+yPoiDrRw2oFN4nENaRhLfPs9J+j/gfqVi7Rw3ZxkYLa5c6bHzPE5mTBT/5ngA hQei/QBGfP0GOUlbS1GLpHmQfzQlv1QFx1+KldidxXCm7XObs1y5nqbysqYwemKc8P7g1sbLX5LEg RIVrgw0A==; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=paroga.com; s=easyname; h=Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject :Cc:To:From:Sender:Reply-To:Content-Type:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: In-Reply-To:References:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=3aXGfsIt9R394loRp+3WF8arPd+Dmc7dX8LDibAPSlU=; b=eVMliy088Ng/ln3LbHY2H9U50a hl5Lt0SocfhopF/klQMQTmR1AXoG6Z826v9P7vDe+wJp2R9VDiMgVAbvgAw0UbL1auFwWSCM+TKJ9 1LLUamA8Shwza+nl7mTMPFFBRC85G/xNsJMy5LzQMWq5WHJc4MD2X53BGmyLoUAWuu69H6ZXArIhD FVA7bmrL7LTAfkY+yPoiDrRw2oFN4nENaRhLfPs9J+j/gfqVi7Rw3ZxkYLa5c6bHzPE5mTBT/5ngA hQei/QBGfP0GOUlbS1GLpHmQfzQlv1QFx1+KldidxXCm7XObs1y5nqbysqYwemKc8P7g1sbLX5LEg RIVrgw0A==; Received: from 84-115-225-171.cable.dynamic.surfer.at ([84.115.225.171] helo=localhost.localdomain) by mx.easyname.com with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1sBBTq-00073L-Vj; Sun, 26 May 2024 10:52:03 +0000 From: Patrick Gansterer 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 Cc: Patrick Gansterer , Lee Jones , Daniel Thompson , Jingoo Han , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Helge Deller , Sam Ravnborg Subject: [PATCH v6 0/2] backlight: Add new lm3509 backlight driver Date: Sun, 26 May 2024 12:51:28 +0200 Message-ID: <20240526105136.721529-1-paroga@paroga.com> X-Mailer: git-send-email 2.45.1 Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Easy-Autoreply: EN This is a general driver for LM3509 backlight chip of TI. LM3509 is High Efficiency Boost for White LEDs and/or OLED Displays with Dual Current Sinks. This driver supports OLED/White LED select, brightness control and sub/main control. The datasheet can be found at http://www.ti.com/product/lm3509. --- Changes in v6: Removed unnecessary allOf in device tree binding v5: https://lore.kernel.org/all/20240330145931.729116-1-paroga@paroga.com/ Changes in v5: Renamed lm3509_bl_led_pdata to lm3509_bl_led_data Set backlight_properties.scale to BACKLIGHT_SCALE_NON_LINEAR Add dev_err_probe() for first write to a register Use dev_err_probe() instead of dev_err() v4: https://lore.kernel.org/all/20240310135344.3455294-1-paroga@paroga.com/ Changes in v4: Use backlight_*() to access backlight_device Do not set backlight_properties.power v3: https://lore.kernel.org/all/20240309132521.1290173-1-paroga@paroga.com/ Changes in v3: Improved device tree bindings documentation v2: https://lore.kernel.org/all/20240308215617.1729664-1-paroga@paroga.com/ Changes in v2: Add device tree nodes for each output Addressed multiple smaller review comments v1: https://lore.kernel.org/all/20240302212757.1871164-1-paroga@paroga.com/ Patrick Gansterer (2): dt-bindings: backlight: Add Texas Instruments LM3509 backlight: Add new lm3509 backlight driver .../bindings/leds/backlight/ti,lm3509.yaml | 136 +++++++ drivers/video/backlight/Kconfig | 7 + drivers/video/backlight/Makefile | 1 + drivers/video/backlight/lm3509_bl.c | 340 ++++++++++++++++++ 4 files changed, 484 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/ti,lm3509.yaml create mode 100644 drivers/video/backlight/lm3509_bl.c