From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dy1-f175.google.com (mail-dy1-f175.google.com [74.125.82.175]) (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 63E4237EFFF for ; Mon, 11 May 2026 20:06:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778529992; cv=none; b=h9oc6H0BZ/8n+/AihPjQhY7oCaIPg/tVd6iaTHvyWg8UkjZxlhDzw5WnhMsMAm4K0GMxDHLtQYu2RkDpS338wfKTvMfDIbiGbHGXBUFL55ZTMO1hJkFTw9o+l4jJUEK8zcvDUoT5+WQJ2lrdxcvwvF/azdG9WeaKx/6n2b7mXAg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778529992; c=relaxed/simple; bh=Ao1+s9xEtiD6QBHowI6J7Mkv3FXHYl0iJlmorIy3mQc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=saT1cRmpioFxpM/1/1a21gxbCzTcXg/yxpguVz/cFyZs8EM7s09RZJ9DVha1Wv5bwp+GIkbsulHfM1X4oRi1hYBiDTOn891Gi6vUFkBZo3OXnuVIuoXU1hKP1eWL5XZ8PCpYRKcC2InbXn0i9HIaV/cndKCmP4EDCmtSFBt10qQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wkennington.com; spf=none smtp.mailfrom=wkennington.com; dkim=pass (2048-bit key) header.d=wkennington-com.20251104.gappssmtp.com header.i=@wkennington-com.20251104.gappssmtp.com header.b=pUmyBP6d; arc=none smtp.client-ip=74.125.82.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wkennington.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=wkennington.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=wkennington-com.20251104.gappssmtp.com header.i=@wkennington-com.20251104.gappssmtp.com header.b="pUmyBP6d" Received: by mail-dy1-f175.google.com with SMTP id 5a478bee46e88-2b4520f6b32so8262621eec.0 for ; Mon, 11 May 2026 13:06:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wkennington-com.20251104.gappssmtp.com; s=20251104; t=1778529990; x=1779134790; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=J4YeuQQs5xPCqUDNxVj/DEq8wwCdgbhYL0v3c1ldlH8=; b=pUmyBP6dpTkLgscSKNDvdAsWyvS41oDGkdPFHZY4fYG+3Bqo/yGMvpfz3Am1hj6hpq ZcWCHGGlALaCcSz5RSzbyltt5yvIDCDvkvrkuSSAntHXqIcw9YZutBXhyO/mVJBOrVst KYMBLg5P5oTja1zo9tesLlpzGkS8b344rkLTo4SX+1Nr8gk9bXg2HImxvp1TjY4A5ImW 6Tt65J4hCwg7VAeag3j0i/e0Kv70ifXzpC76c8qLjMckY/sM6rmBWLFd3b3KfnBHdNUl 62MnXnsGAK4bRN8jGqCNq6ZUSvG2qEA9JAC/UoTdz0atITZqB0TbAUOZEDJnavCRH8DH Kd4g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778529990; x=1779134790; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=J4YeuQQs5xPCqUDNxVj/DEq8wwCdgbhYL0v3c1ldlH8=; b=H2N0Ln2LDGJuvBN8YaOPNx/wYx/30qMvOqIfMQmnxstIq9itB3C5v1em/gAyK9jcOK XkVTMujKiH/RB1Lk98K3JCIdx7lEFIYR5Nc2ZFSWbXyDoBOlMql1ediuWnqdQ6ELFAcm ZzpIbkv5yup9yaPXBX3HfcAjHIUhs+m712vD9VhZklzggRxJQMwkuOZ2uWkMc1/L5t6Y xHQx2Ll+OirK3354PMFRMKJ164gLtXVcHACw6JgCF/DHsXLZ1aDJhIZbj3T4WR8FMjNo lOkgo12bAch7RWDEahQmMi3HQiaJO2FA9rEu/ynpX/GbAqtl/0E04v5nPU52Dk8bKuG3 vOwA== X-Forwarded-Encrypted: i=1; AFNElJ9Inm7RCcnf613zNJOFPFlYqNSkHpm4x5IUXMf/UMFO7St01UMUs5ooNo0vv5LyZapxDOgsQMZzCrFxZic=@vger.kernel.org X-Gm-Message-State: AOJu0YzQCxTZB59IwiuKlW6AfKSU4VSIjg4LmBvVaqZLrhOhN2rHDHaU YGiy+ogSEQqvw5i6ppLILaVfnWb1YKoKHIlI9BBPNSk3CKVUnDGOt5LDdQDjtedlUxi2cQe/7AW pTFZYf+M= X-Gm-Gg: Acq92OE/UTLity5CT4TD2WH8C0vy+5r6T9Xyhg4/9N0MZIMMaEibjev8e7ZGyI5hJg8 0wcpeU8nQXUg4G9a1JuI5eGYkpxfKEascocYJFsZrx5sdRFhmW+X511Cld8IED7GSnkrzBfdMTQ ogillp/QU63+UtFmVbNU4332Fi8MEWc0Ddmi8wOdc4SBIzCIQFxJo+jaFFb9bodNcFckBEMSZ2+ Ov9165LZ4Gp01mnVcMa77Ya5RoXrybvazBM72bowxyGunF1a1TIIgi14LhsZCIhNkqJ/PY6XxnZ YSG8pElxS6zXIyAPPm4Vbhf5bWXPzsdwRtRQpnc+KT6Y5hh3piY+nFTGmLXzhMxSBZzy/YOlBdq RIU4UGbLbkUSto4nJJ/+D6zPfNttG9l6k1mDCBHkbqW5yo+0ipKpTebPArowkfXAAxR3f8uQq1A 9MNdQCndK7hqfQWHEXf8OLywmLYfrRd7IpnHZ3jPv8jwhmtkizFTI8ssqSnktZniHuVgOgZm5f5 E26U0LOWKNf6aapq/BqnZcruA== X-Received: by 2002:a05:693c:394c:b0:2df:71f0:e5b3 with SMTP id 5a478bee46e88-2f54f9447a6mr12068082eec.20.1778529990290; Mon, 11 May 2026 13:06:30 -0700 (PDT) Received: from wakbuild.c.googlers.com (123.143.125.34.bc.googleusercontent.com. [34.125.143.123]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2f888c469b6sm15066942eec.24.2026.05.11.13.06.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 11 May 2026 13:06:29 -0700 (PDT) From: "William A. Kennington III" Date: Mon, 11 May 2026 20:06:28 +0000 Subject: [PATCH v5 3/4] i2c: designware: Convert platform driver to use shutdown hook Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260511-dw-i2c-v5-3-6c382e1b5de6@wkennington.com> References: <20260511-dw-i2c-v5-0-6c382e1b5de6@wkennington.com> In-Reply-To: <20260511-dw-i2c-v5-0-6c382e1b5de6@wkennington.com> To: Mika Westerberg , Andy Shevchenko , Jan Dabros , Andi Shyti Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, "William A. Kennington III" X-Mailer: b4 0.14.3 Convert the platform driver to use the new i2c_dw_shutdown() hook, allowing the controller to gracefully NACK controllers requests during system shutdown. Signed-off-by: William A. Kennington III --- drivers/i2c/busses/i2c-designware-platdrv.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 3351c4a9ef11..da2babd6188b 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -289,9 +289,23 @@ static const struct platform_device_id dw_i2c_platform_ids[] = { }; MODULE_DEVICE_TABLE(platform, dw_i2c_platform_ids); +static void dw_i2c_plat_shutdown(struct platform_device *pdev) +{ + struct dw_i2c_dev *i_dev; + + i_dev = platform_get_drvdata(pdev); + if (!i_dev) + return; + + pm_runtime_disable(&pdev->dev); + if (!pm_runtime_status_suspended(&pdev->dev)) + i2c_dw_shutdown(i_dev); +} + static struct platform_driver dw_i2c_driver = { .probe = dw_i2c_plat_probe, .remove = dw_i2c_plat_remove, + .shutdown = dw_i2c_plat_shutdown, .driver = { .name = "i2c_designware", .of_match_table = dw_i2c_of_match, -- 2.54.0.563.g4f69b47b94-goog