From patchwork Sat Dec 7 13:03:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nick Chan X-Patchwork-Id: 13898261 Received: from mail-pl1-f181.google.com (mail-pl1-f181.google.com [209.85.214.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 15F5914A4F3; Sat, 7 Dec 2024 13:04:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.181 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733576694; cv=none; b=sO1tHNWI6vIxaPgqo2ysBlCzmlE1dhA9YlhB8SPeoaRh+bMxUXs9ickMgO4Q1aoTEP9nGjzoRiqx8miV928hT7RgXesKntQKXY5YjMSDY003po754URLwDdeeVVmXQX//dVfQ1v7Or0ttKYsFhFX4pdHou46QB0OBvCKsRnBRfE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733576694; c=relaxed/simple; bh=xbMDhkWnVIJmZc2hbDYYC8Fz8jfR0f5DvBXM5oOGGqg=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=iFY/qIiaFyY7JNj5a932ZrRNPqt0jnhSpRjfc9G+xupozyqGNh6kvY6K45c6yIKq7Ysoz4qPbw45FnqBPx429obDap01nwIDI4itMookUT0t/tnjyF0AhwY0jB7/J6uIMXfkd96c2BSD0RlfFNfCxWxaGolhtWljZ6sFDZxID0c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=G6zvbTIs; arc=none smtp.client-ip=209.85.214.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="G6zvbTIs" Received: by mail-pl1-f181.google.com with SMTP id d9443c01a7336-215e194b65aso28676595ad.1; Sat, 07 Dec 2024 05:04:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1733576692; x=1734181492; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:from:to:cc:subject:date:message-id:reply-to; bh=moWB21d17IXR2Ld3TZN2U112qJtHW3wGr/Qsd74h1mg=; b=G6zvbTIsprkrfZasHgZn8TSWpkcQYF3duuxIAVYxorthK5+vRZVk6ne9TesqSd5msk 7iaAnBfpl02zn9AmT44BofRiS7y6CWvEB6F6axYYnjx2hXx+dbrAhqnwTPFAEw48tQ8L KsjhGgAggC3CbhJOlDbpsf5RR6fYLCfOuw38Y6bcBOclBNalApetGFfu1yC8MqZwiQ/R ECN/y0fh4mEkJpsQLZGeMXHfY/arN6PNIt+qcjetW9UZQLoh5ZhpvLKvxejrnG2qHpYu TYZ+WfjTUetwfZUaljtonqrTVfHAoTHovhZbPH6YEJpJYJOSIptBhmAA1ImkjrW+9jGe m0vw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1733576692; x=1734181492; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=moWB21d17IXR2Ld3TZN2U112qJtHW3wGr/Qsd74h1mg=; b=repD5++Fp0lkniej+cJtZiX8QdAOAQtxncHlEM0mKnWXg6qwPRaeBimaST9UH1QCZj 0wM+3XC2HVeh42v4t3emTsls9mR1MfDmoHnEUPx+r79QQGtXIRHz1SbG2cFtgvQ5wd14 i4nbojTNtxQFcDu1reNEa/HSDWxEkFxf3m1uyu4Ps2cymJYYwmyJrJ6WX+pTBZWgtIbP /5VpmUWTthvfbI+UEg19oqLLqYZFnFXLsZuPUNYeVUJYDB7jKh8BKUsjlau8BV/QoC5a dHm6WWFQetUL6FGnXjjCcItI8X4LLsGRYNpIDSh8wtHQx2gWG4TEbHhq8rub7dFpgAJ2 AUHQ== X-Forwarded-Encrypted: i=1; AJvYcCUUm3ETEY38saUqyO9sL3saxApIJB/KGWwpgpPWqildgL/ddDhjzX83OaMbjqSn24q3fO/WoQWk1pZv@vger.kernel.org, AJvYcCUvwbpOrnD0d19mZmZ4e9wDBDGRqLs8nJDk6Zlfaj1wOix7/arnp0BCJsnj220rBDbmgGZXYEhoqM3Midk=@vger.kernel.org, AJvYcCXMiCudZe6RjC2fdDm9Uk1QLVpLeboGPDFaGHg264hCROBNiGaOdsJ2CexnIXmN/knH0Wcfte0C6Gmv6uJp@vger.kernel.org, AJvYcCXPOcyFkXPh40tmK4hqaOwlzGzC49XESk57ll5B6NwaRtuYNEKpWcTKn1xXw+YCpZuel25+dLDX9LiGwA==@vger.kernel.org X-Gm-Message-State: AOJu0Yw4tqEu0CjW7qw8MWjeeCVu/QS2aW9vXM6LExsJyYPyoU7OAHel gyZMJV/dLNRfG+KrVSXW/p9I/8s8tkRMVGgyTtl9RZUNnLEcFDmnTOjA4g== X-Gm-Gg: ASbGnctKvhvXUfsQDKW9RTcnaMxIMHiAJDctrcjzfoxT2fg2rKEPIZjoEgahc9Dn0Al Pho7WqRTCR2LM6jIyNXcAY45g33+Hkf3lQHNh+E0drA/+5KCBFrWgN3UW3WUkPDaEpre/RgDXEg CFH+W3+kOA1w8WwzSsSyopqy2+0PwqDOaO9F0XLtr834Z6rFAM/0a2aPeatq5PAwSRF1lFkEzop 1+W4F+T0DXs6JkR6vOKFe0pdL1ylEimWJhcfVWNywr/1roARwms2oL0KJdMvxYfjw== X-Google-Smtp-Source: AGHT+IEXK6h1lriVkUgeA8NkzsgEpDjD4uXCqmEP1oor2nMQ4lKCeHQ2ggi4Xw9LEbdrlC3ZH0E/BA== X-Received: by 2002:a17:903:124a:b0:215:5ea2:654b with SMTP id d9443c01a7336-21614d5435fmr111914685ad.1.1733576692163; Sat, 07 Dec 2024 05:04:52 -0800 (PST) Received: from localhost.localdomain ([59.188.211.160]) by smtp.googlemail.com with ESMTPSA id d9443c01a7336-21628c59730sm12779715ad.105.2024.12.07.05.04.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 Dec 2024 05:04:51 -0800 (PST) From: Nick Chan To: Lee Jones , Daniel Thompson , Jingoo Han , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Helge Deller , Hector Martin , Sven Peter , Alyssa Rosenzweig , Nick Chan , dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 0/3] Apple DWI backlight driver Date: Sat, 7 Dec 2024 21:03:13 +0800 Message-ID: <20241207130433.30351-1-towinchenmi@gmail.com> X-Mailer: git-send-email 2.47.1 Precedence: bulk X-Mailing-List: linux-fbdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Apple SoCs come with a 2-wire interface named DWI. On some iPhones, iPads and iPod touches the backlight controller is connected via this interface. This series adds a backlight driver for backlight controllers connected this way. Changes since v1: - Fixed dt-bindings $id. - Make power-domains an optional property in dt-bindings. - Added missing error checking after devm_ioremap_resource() in dwi_bl_probe(). v1: https://lore.kernel.org/asahi/20241206172735.4310-1-towinchenmi@gmail.com/T Nick Chan --- Nick Chan (3): dt-bindings: leds: backlight: apple,dwi-bl: Add bindings for Apple DWI backlight backlight: dwi_bl: Add Apple DWI backlight driver MAINTAINERS: Add entries for Apple DWI backlight controller .../bindings/leds/backlight/apple,dwi-bl.yaml | 54 ++++++++ MAINTAINERS | 2 + drivers/video/backlight/Kconfig | 12 ++ drivers/video/backlight/Makefile | 1 + drivers/video/backlight/dwi_bl.c | 124 ++++++++++++++++++ 5 files changed, 193 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/apple,dwi-bl.yaml create mode 100644 drivers/video/backlight/dwi_bl.c base-commit: 40384c840ea1944d7c5a392e8975ed088ecf0b37