From patchwork Fri Dec 22 15:53:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 757694 Received: from mail-ej1-f44.google.com (mail-ej1-f44.google.com [209.85.218.44]) (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 4B6262377A for ; Fri, 22 Dec 2023 15:53:35 +0000 (UTC) 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="laBi0PXw" Received: by mail-ej1-f44.google.com with SMTP id a640c23a62f3a-a235eb41251so243359266b.3 for ; Fri, 22 Dec 2023 07:53:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1703260413; x=1703865213; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:autocrypt:references:cc:to :from:content-language:subject:user-agent:mime-version:date :message-id:from:to:cc:subject:date:message-id:reply-to; bh=jR0i5R6/MoO43dXK7YzoNWNwN6P7QFzTN9/1M/VZa0s=; b=laBi0PXw26FBD/HYlli/Bx++1OUsHXdEu5A5oIuF+kH7TCVFohPhEVfjDyZL/Gj7XT OyLu7RPeS8K5ZkOwt68cRWGkekdGIGaFCkvUJOrW6JduQNzUhWwr8tFfCEfN+EPS7b6S uH4mQbncqM94EwZrhz3aYkHHtbc0s6fQZ4Jwe9dLZWx4WOaa5xu7gvAA0wC2tgXXE5zo rfVC8vICgn+pohH6DQtgoKVYjl05GNVCpRbdTMRdNVx9FyfsrCghGvHMZB3llkYZZjJZ Hn1DK7f5IG8wXQB4Flz8/088gw+StqxD5Yqo8wIq44Czum70jWQXI11WnUU3im0lTvaM V95A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703260413; x=1703865213; h=content-transfer-encoding:in-reply-to:autocrypt:references:cc:to :from:content-language:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=jR0i5R6/MoO43dXK7YzoNWNwN6P7QFzTN9/1M/VZa0s=; b=sBi3fePx8aoG5pMURW7B9j34ZdnTPYXRV1swY0NEwRY/538qSD4bG/EXyjvf1+dVLh B2CVoXg6Hq0APP5yy6P2jH6VYipaHVWWe9htO447txKYz+JVFphVYD1L0i1dQlnLt0Uv FFKx7l9clQKN59Z74khfgA7e/DPtodAVB69SG46ArDD1CzeJ/Hz2DRbbWGUxOLKWIBr0 0pegar/8A2ijFQUsI2AumAIDJEV4DckhyMuLWtU8SVpVRLY+PFFETq7BmNcdDnnY6Eco bbU9qHo2BBbocUWJoVmiHCz4zkCLsf7YptlmzZEppL55D+oWH0EmLKbMqNxcovZOkypf CHUQ== X-Gm-Message-State: AOJu0Yx2hscyjua+xfq4M4XNzFUAgk5eXeztm+Fjz6Opvh+sIpuLQzB5 TEk9S0mtqZ20JZ5a9aB5K1c= X-Google-Smtp-Source: AGHT+IGesR55oCjE3LuRGQ3/zeokYx6VQn+wG3SH4hSXak+GQO2+PyA8WcwLISolfdN91aUejXXhAQ== X-Received: by 2002:a17:907:5004:b0:a23:5a0a:76f3 with SMTP id fw4-20020a170907500400b00a235a0a76f3mr549985ejc.176.1703260413272; Fri, 22 Dec 2023 07:53:33 -0800 (PST) Received: from ?IPV6:2a01:c22:76fe:e700:90c7:5d23:5f70:b2c6? 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[2a01:c22:76fe:e700:90c7:5d23:5f70:b2c6]) by smtp.googlemail.com with ESMTPSA id az16-20020a170907905000b00a26ac53c2b7sm1519145ejc.98.2023.12.22.07.53.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 Dec 2023 07:53:32 -0800 (PST) Message-ID: Date: Fri, 22 Dec 2023 16:53:34 +0100 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH RFC 1/3] i2c: smbus: Prepare i2c_register_spd for use on muxed segments Content-Language: en-US From: Heiner Kallweit To: Jean Delvare , Andi Shyti , Wolfram Sang , Peter Korsgaard , Peter Rosin Cc: "linux-i2c@vger.kernel.org" References: Autocrypt: addr=hkallweit1@gmail.com; keydata= xsFNBF/0ZFUBEAC0eZyktSE7ZNO1SFXL6cQ4i4g6Ah3mOUIXSB4pCY5kQ6OLKHh0FlOD5/5/ sY7IoIouzOjyFdFPnz4Bl3927ClT567hUJJ+SNaFEiJ9vadI6vZm2gcY4ExdIevYHWe1msJF MVE4yNwdS+UsPeCF/6CQQTzHc+n7DomE7fjJD5J1hOJjqz2XWe71fTvYXzxCFLwXXbBiqDC9 dNqOe5odPsa4TsWZ09T33g5n2nzTJs4Zw8fCy8rLqix/raVsqr8fw5qM66MVtdmEljFaJ9N8 /W56qGCp+H8Igk/F7CjlbWXiOlKHA25mPTmbVp7VlFsvsmMokr/imQr+0nXtmvYVaKEUwY2g 86IU6RAOuA8E0J5bD/BeyZdMyVEtX1kT404UJZekFytJZrDZetwxM/cAH+1fMx4z751WJmxQ J7mIXSPuDfeJhRDt9sGM6aRVfXbZt+wBogxyXepmnlv9K4A13z9DVLdKLrYUiu9/5QEl6fgI kPaXlAZmJsQfoKbmPqCHVRYj1lpQtDM/2/BO6gHASflWUHzwmBVZbS/XRs64uJO8CB3+V3fa cIivllReueGCMsHh6/8wgPAyopXOWOxbLsZ291fmZqIR0L5Y6b2HvdFN1Xhc+YrQ8TKK+Z4R mJRDh0wNQ8Gm89g92/YkHji4jIWlp2fwzCcx5+lZCQ1XdqAiHQARAQABzSZIZWluZXIgS2Fs bHdlaXQgPGhrYWxsd2VpdDFAZ21haWwuY29tPsLBjgQTAQgAOBYhBGxfqY/yOyXjyjJehXLe ig9U8DoMBQJf9GRVAhsDBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAAAoJEHLeig9U8DoMSycQ AJbfg8HZEK0ljV4M8nvdaiNixWAufrcZ+SD8zhbxl8GispK4F3Yo+20Y3UoZ7FcIidJWUUJL axAOkpI/70YNhlqAPMsuudlAieeYZKjIv1WV5ucNZ3VJ7dC+dlVqQdAr1iD869FZXvy91KhJ wYulyCf+s4T9YgmLC6jLMBZghKIf1uhSd0NzjyCqYWbk2ZxByZHgunEShOhHPHswu3Am0ftt ePaYIHgZs+Vzwfjs8I7EuW/5/f5G9w1vibXxtGY/GXwgGGHRDjFM7RSprGOv4F5eMGh+NFUJ TU9N96PQYMwXVxnQfRXl8O6ffSVmFx4H9rovxWPKobLmqQL0WKLLVvA/aOHCcMKgfyKRcLah 57vGC50Ga8oT2K1g0AhKGkyJo7lGXkMu5yEs0m9O+btqAB261/E3DRxfI1P/tvDZpLJKtq35 dXsj6sjvhgX7VxXhY1wE54uqLLHY3UZQlmH3QF5t80MS7/KhxB1pO1Cpcmkt9hgyzH8+5org +9wWxGUtJWNP7CppY+qvv3SZtKJMKsxqk5coBGwNkMms56z4qfJm2PUtJQGjA65XWdzQACib 2iaDQoBqGZfXRdPT0tC1H5kUJuOX4ll1hI/HBMEFCcO8++Bl2wcrUsAxLzGvhINVJX2DAQaF aNetToazkCnzubKfBOyiTqFJ0b63c5dqziAgzsFNBF/0ZFUBEADF8UEZmKDl1w/UxvjeyAeX kghYkY3bkK6gcIYXdLRfJw12GbvMioSguvVzASVHG8h7NbNjk1yur6AONfbUpXKSNZ0skV8V fG+ppbaY+zQofsSMoj5gP0amwbwvPzVqZCYJai81VobefTX2MZM2Mg/ThBVtGyzV3NeCpnBa 8AX3s9rrX2XUoCibYotbbxx9afZYUFyflOc7kEpc9uJXIdaxS2Z6MnYLHsyVjiU6tzKCiVOU KJevqvzPXJmy0xaOVf7mhFSNQyJTrZpLa+tvB1DQRS08CqYtIMxRrVtC0t0LFeQGly6bOngr ircurWJiJKbSXVstLHgWYiq3/GmCSx/82ObeLO3PftklpRj8d+kFbrvrqBgjWtMH4WtK5uN5 1WJ71hWJfNchKRlaJ3GWy8KolCAoGsQMovn/ZEXxrGs1ndafu47yXOpuDAozoHTBGvuSXSZo ythk/0EAuz5IkwkhYBT1MGIAvNSn9ivE5aRnBazugy0rTRkVggHvt3/7flFHlGVGpBHxFUwb /a4UjJBPtIwa4tWR8B1Ma36S8Jk456k2n1id7M0LQ+eqstmp6Y+UB+pt9NX6t0Slw1NCdYTW gJezWTVKF7pmTdXszXGxlc9kTrVUz04PqPjnYbv5UWuDd2eyzGjrrFOsJEi8OK2d2j4FfF++ AzOMdW09JVqejQARAQABwsF2BBgBCAAgFiEEbF+pj/I7JePKMl6Fct6KD1TwOgwFAl/0ZFUC GwwACgkQct6KD1TwOgxUfg//eAoYc0Vm4NrxymfcY30UjHVD0LgSvU8kUmXxil3qhFPS7KA+ y7tgcKLHOkZkXMX5MLFcS9+SmrAjSBBV8omKoHNo+kfFx/dUAtz0lot8wNGmWb+NcHeKM1eb nwUMOEa1uDdfZeKef/U/2uHBceY7Gc6zPZPWgXghEyQMTH2UhLgeam8yglyO+A6RXCh+s6ak Wje7Vo1wGK4eYxp6pwMPJXLMsI0ii/2k3YPEJPv+yJf90MbYyQSbkTwZhrsokjQEaIfjrIk3 rQRjTve/J62WIO28IbY/mENuGgWehRlTAbhC4BLTZ5uYS0YMQCR7v9UGMWdNWXFyrOB6PjSu Trn9MsPoUc8qI72mVpxEXQDLlrd2ijEWm7Nrf52YMD7hL6rXXuis7R6zY8WnnBhW0uCfhajx q+KuARXC0sDLztcjaS3ayXonpoCPZep2Bd5xqE4Ln8/COCslP7E92W1uf1EcdXXIrx1acg21 H/0Z53okMykVs3a8tECPHIxnre2UxKdTbCEkjkR4V6JyplTS47oWMw3zyI7zkaadfzVFBxk2 lo/Tny+FX1Azea3Ce7oOnRUEZtWSsUidtIjmL8YUQFZYm+JUIgfRmSpMFq8JP4VH43GXpB/S OCrl+/xujzvoUBFV/cHKjEQYBxo+MaiQa1U54ykM2W4DnHb1UiEf5xDkFd4= In-Reply-To: If this is an adapter on a muxed bus segment, assume that each segment is connected to a subset of the (> 8) overall memory slots. In this case let's probe the maximum of 8 slots, however stop if the number of overall populated slots is reached. If we're not on a muxed segment and the total number of slots is > 8, report an error, because then not all SPD eeproms can be addressed. Presumably the bus is muxed, but the mux config is missing. Signed-off-by: Heiner Kallweit --- drivers/i2c/i2c-smbus.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/i2c/i2c-smbus.c b/drivers/i2c/i2c-smbus.c index 74807c6db..ad7ea0215 100644 --- a/drivers/i2c/i2c-smbus.c +++ b/drivers/i2c/i2c-smbus.c @@ -351,13 +351,17 @@ void i2c_register_spd(struct i2c_adapter *adap) if (!dimm_count) return; - dev_info(&adap->dev, "%d/%d memory slots populated (from DMI)\n", - dimm_count, slot_count); - - if (slot_count > 8) { - dev_warn(&adap->dev, - "Systems with more than 8 memory slots not supported yet, not instantiating SPD\n"); - return; + /* Check whether we're a child adapter on a muxed segment */ + if (i2c_parent_is_i2c_adapter(adap)) { + slot_count = 8; + } else { + if (slot_count > 8) { + dev_err(&adap->dev, + "More than 8 memory slots on a single bus, mux config missing?\n"); + return; + } + dev_info(&adap->dev, "%d/%d memory slots populated (from DMI)\n", + dimm_count, slot_count); } /* From patchwork Fri Dec 22 15:54:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 758156 Received: from mail-ej1-f52.google.com (mail-ej1-f52.google.com [209.85.218.52]) (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 58A892377A for ; Fri, 22 Dec 2023 15:54:22 +0000 (UTC) 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="nOnItPx+" Received: by mail-ej1-f52.google.com with SMTP id a640c23a62f3a-a2340c803c6so240751266b.0 for ; Fri, 22 Dec 2023 07:54:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1703260460; x=1703865260; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:autocrypt:references:cc:to :from:content-language:subject:user-agent:mime-version:date :message-id:from:to:cc:subject:date:message-id:reply-to; bh=VhC/n0CjRVF8KvYMwp370+kS3ypHbKyh7rtKGmohXUo=; b=nOnItPx+1oA77oV0Q6Me7IF37v6CXYMf7WnCfgbuuQMgROvYU4o9k0f04rNgZCiQRP ZyQ5Fynvdq8hOb7qhq4RzPaDjW1ecEE00lrw2mLt8YRXx/EuvWDaLubuwNqiouSHQMiI 46a1hDpS7YKBrzWW/Gh/nLHEQH2naQ0r/OMTxVhvmG5CZjcQbkWPDErk62/EvTofI13x EAgs8P11jK2AulGV+DFtMj7cBaPdQ4NuP6PY3UaxaAVdthJ634jJjMuDbHbxOf9lJJQ5 FEzHKh27Pw03S9gjm22AhIJvQzeF7/T1c/sF1wxXT2XrZ3qYfWFpyIN0UsrDQJDQWrH9 Gibg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703260460; x=1703865260; h=content-transfer-encoding:in-reply-to:autocrypt:references:cc:to :from:content-language:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=VhC/n0CjRVF8KvYMwp370+kS3ypHbKyh7rtKGmohXUo=; b=eZCNnCVxZGTXfGjqYtIFDpTlf9pOCCg0/0ClDtklkfMPRYYEBtufSZpSeI71939WSC VZSbtPgWGwN6WwoFUynRQ5qCS/MiDgBRM8VRt+T52arwkd+BlY9k+eqIpI1tFVimUtJ/ GETqcUGy5AWOielblwjwKmKI57oj/G+1MXL6FENMgCFLiyaaZEI8lkkEugjSFQAKPWs0 mNSWX59/GC3Axe3EMDxOf/q6meYQ6pJCiUpGE+zbUTl71jm3nYb3rv8VKYC1PxwAzZJj Btkk0sj28sN/4aupa4NpTxE7gUeGbvNfvNMJvSv5nJ82Fy5THasQBeJfVT7LNNDbRZeH KCqQ== X-Gm-Message-State: AOJu0YwjNXafvJcB3wfa9aZmaVY0/6Kp6FSe+YChJWPqVWD6CEZ76Cx8 nAuwyO94Kmh7OrmmRm6/Ve0= X-Google-Smtp-Source: AGHT+IGDBwvCkFXDQEggshlWEwjFQkkwLogaEWp9SiWseovl2nNgJKkWcIU2OrSdsLyGYLlKjbacrA== X-Received: by 2002:a17:906:174d:b0:a26:9d1c:a73a with SMTP id d13-20020a170906174d00b00a269d1ca73amr966281eje.59.1703260460576; Fri, 22 Dec 2023 07:54:20 -0800 (PST) Received: from ?IPV6:2a01:c22:76fe:e700:90c7:5d23:5f70:b2c6? 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[2a01:c22:76fe:e700:90c7:5d23:5f70:b2c6]) by smtp.googlemail.com with ESMTPSA id az16-20020a170907905000b00a26ac53c2b7sm1519145ejc.98.2023.12.22.07.54.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 Dec 2023 07:54:20 -0800 (PST) Message-ID: <6cf1d639-1b5c-4f8a-9ed3-6ff8187329b3@gmail.com> Date: Fri, 22 Dec 2023 16:54:21 +0100 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH RFC 2/3] i2c: mux: gpio: Allow to call i2c_register_spd on a muxed segment Content-Language: en-US From: Heiner Kallweit To: Jean Delvare , Andi Shyti , Wolfram Sang , Peter Korsgaard , Peter Rosin Cc: "linux-i2c@vger.kernel.org" References: Autocrypt: addr=hkallweit1@gmail.com; keydata= xsFNBF/0ZFUBEAC0eZyktSE7ZNO1SFXL6cQ4i4g6Ah3mOUIXSB4pCY5kQ6OLKHh0FlOD5/5/ sY7IoIouzOjyFdFPnz4Bl3927ClT567hUJJ+SNaFEiJ9vadI6vZm2gcY4ExdIevYHWe1msJF MVE4yNwdS+UsPeCF/6CQQTzHc+n7DomE7fjJD5J1hOJjqz2XWe71fTvYXzxCFLwXXbBiqDC9 dNqOe5odPsa4TsWZ09T33g5n2nzTJs4Zw8fCy8rLqix/raVsqr8fw5qM66MVtdmEljFaJ9N8 /W56qGCp+H8Igk/F7CjlbWXiOlKHA25mPTmbVp7VlFsvsmMokr/imQr+0nXtmvYVaKEUwY2g 86IU6RAOuA8E0J5bD/BeyZdMyVEtX1kT404UJZekFytJZrDZetwxM/cAH+1fMx4z751WJmxQ J7mIXSPuDfeJhRDt9sGM6aRVfXbZt+wBogxyXepmnlv9K4A13z9DVLdKLrYUiu9/5QEl6fgI kPaXlAZmJsQfoKbmPqCHVRYj1lpQtDM/2/BO6gHASflWUHzwmBVZbS/XRs64uJO8CB3+V3fa cIivllReueGCMsHh6/8wgPAyopXOWOxbLsZ291fmZqIR0L5Y6b2HvdFN1Xhc+YrQ8TKK+Z4R mJRDh0wNQ8Gm89g92/YkHji4jIWlp2fwzCcx5+lZCQ1XdqAiHQARAQABzSZIZWluZXIgS2Fs bHdlaXQgPGhrYWxsd2VpdDFAZ21haWwuY29tPsLBjgQTAQgAOBYhBGxfqY/yOyXjyjJehXLe ig9U8DoMBQJf9GRVAhsDBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAAAoJEHLeig9U8DoMSycQ AJbfg8HZEK0ljV4M8nvdaiNixWAufrcZ+SD8zhbxl8GispK4F3Yo+20Y3UoZ7FcIidJWUUJL axAOkpI/70YNhlqAPMsuudlAieeYZKjIv1WV5ucNZ3VJ7dC+dlVqQdAr1iD869FZXvy91KhJ wYulyCf+s4T9YgmLC6jLMBZghKIf1uhSd0NzjyCqYWbk2ZxByZHgunEShOhHPHswu3Am0ftt ePaYIHgZs+Vzwfjs8I7EuW/5/f5G9w1vibXxtGY/GXwgGGHRDjFM7RSprGOv4F5eMGh+NFUJ TU9N96PQYMwXVxnQfRXl8O6ffSVmFx4H9rovxWPKobLmqQL0WKLLVvA/aOHCcMKgfyKRcLah 57vGC50Ga8oT2K1g0AhKGkyJo7lGXkMu5yEs0m9O+btqAB261/E3DRxfI1P/tvDZpLJKtq35 dXsj6sjvhgX7VxXhY1wE54uqLLHY3UZQlmH3QF5t80MS7/KhxB1pO1Cpcmkt9hgyzH8+5org +9wWxGUtJWNP7CppY+qvv3SZtKJMKsxqk5coBGwNkMms56z4qfJm2PUtJQGjA65XWdzQACib 2iaDQoBqGZfXRdPT0tC1H5kUJuOX4ll1hI/HBMEFCcO8++Bl2wcrUsAxLzGvhINVJX2DAQaF aNetToazkCnzubKfBOyiTqFJ0b63c5dqziAgzsFNBF/0ZFUBEADF8UEZmKDl1w/UxvjeyAeX kghYkY3bkK6gcIYXdLRfJw12GbvMioSguvVzASVHG8h7NbNjk1yur6AONfbUpXKSNZ0skV8V fG+ppbaY+zQofsSMoj5gP0amwbwvPzVqZCYJai81VobefTX2MZM2Mg/ThBVtGyzV3NeCpnBa 8AX3s9rrX2XUoCibYotbbxx9afZYUFyflOc7kEpc9uJXIdaxS2Z6MnYLHsyVjiU6tzKCiVOU KJevqvzPXJmy0xaOVf7mhFSNQyJTrZpLa+tvB1DQRS08CqYtIMxRrVtC0t0LFeQGly6bOngr ircurWJiJKbSXVstLHgWYiq3/GmCSx/82ObeLO3PftklpRj8d+kFbrvrqBgjWtMH4WtK5uN5 1WJ71hWJfNchKRlaJ3GWy8KolCAoGsQMovn/ZEXxrGs1ndafu47yXOpuDAozoHTBGvuSXSZo ythk/0EAuz5IkwkhYBT1MGIAvNSn9ivE5aRnBazugy0rTRkVggHvt3/7flFHlGVGpBHxFUwb /a4UjJBPtIwa4tWR8B1Ma36S8Jk456k2n1id7M0LQ+eqstmp6Y+UB+pt9NX6t0Slw1NCdYTW gJezWTVKF7pmTdXszXGxlc9kTrVUz04PqPjnYbv5UWuDd2eyzGjrrFOsJEi8OK2d2j4FfF++ AzOMdW09JVqejQARAQABwsF2BBgBCAAgFiEEbF+pj/I7JePKMl6Fct6KD1TwOgwFAl/0ZFUC GwwACgkQct6KD1TwOgxUfg//eAoYc0Vm4NrxymfcY30UjHVD0LgSvU8kUmXxil3qhFPS7KA+ y7tgcKLHOkZkXMX5MLFcS9+SmrAjSBBV8omKoHNo+kfFx/dUAtz0lot8wNGmWb+NcHeKM1eb nwUMOEa1uDdfZeKef/U/2uHBceY7Gc6zPZPWgXghEyQMTH2UhLgeam8yglyO+A6RXCh+s6ak Wje7Vo1wGK4eYxp6pwMPJXLMsI0ii/2k3YPEJPv+yJf90MbYyQSbkTwZhrsokjQEaIfjrIk3 rQRjTve/J62WIO28IbY/mENuGgWehRlTAbhC4BLTZ5uYS0YMQCR7v9UGMWdNWXFyrOB6PjSu Trn9MsPoUc8qI72mVpxEXQDLlrd2ijEWm7Nrf52YMD7hL6rXXuis7R6zY8WnnBhW0uCfhajx q+KuARXC0sDLztcjaS3ayXonpoCPZep2Bd5xqE4Ln8/COCslP7E92W1uf1EcdXXIrx1acg21 H/0Z53okMykVs3a8tECPHIxnre2UxKdTbCEkjkR4V6JyplTS47oWMw3zyI7zkaadfzVFBxk2 lo/Tny+FX1Azea3Ce7oOnRUEZtWSsUidtIjmL8YUQFZYm+JUIgfRmSpMFq8JP4VH43GXpB/S OCrl+/xujzvoUBFV/cHKjEQYBxo+MaiQa1U54ykM2W4DnHb1UiEf5xDkFd4= In-Reply-To: Now that i2c_register_spd() has been extended for use on muxed segments, provide the parent with an option to instruct the child adapters to call i2c_register_spd() for each segment. Signed-off-by: Heiner Kallweit --- drivers/i2c/muxes/i2c-mux-gpio.c | 6 ++++++ include/linux/platform_data/i2c-mux-gpio.h | 2 ++ 2 files changed, 8 insertions(+) diff --git a/drivers/i2c/muxes/i2c-mux-gpio.c b/drivers/i2c/muxes/i2c-mux-gpio.c index 6b979a0a6..eafbc4abd 100644 --- a/drivers/i2c/muxes/i2c-mux-gpio.c +++ b/drivers/i2c/muxes/i2c-mux-gpio.c @@ -7,6 +7,7 @@ #include #include +#include #include #include #include @@ -216,6 +217,11 @@ static int i2c_mux_gpio_probe(struct platform_device *pdev) dev_info(&pdev->dev, "%d port mux on %s adapter\n", mux->data.n_values, parent->name); + if (mux->data.register_spd) { + for (i = 0; i < muxc->num_adapters; i++) + i2c_register_spd(muxc->adapter[i]); + } + return 0; add_adapter_failed: diff --git a/include/linux/platform_data/i2c-mux-gpio.h b/include/linux/platform_data/i2c-mux-gpio.h index 5e4c2c272..cbeb74f92 100644 --- a/include/linux/platform_data/i2c-mux-gpio.h +++ b/include/linux/platform_data/i2c-mux-gpio.h @@ -20,6 +20,7 @@ * @n_values: Number of multiplexer positions (busses to instantiate) * @classes: Optional I2C auto-detection classes * @idle: Bitmask to write to MUX when idle or GPIO_I2CMUX_NO_IDLE if not used + * @register_spd: call i2c_register_spd for the child adapters on muxed segments */ struct i2c_mux_gpio_platform_data { int parent; @@ -28,6 +29,7 @@ struct i2c_mux_gpio_platform_data { int n_values; const unsigned *classes; unsigned idle; + unsigned int register_spd:1; }; #endif /* _LINUX_I2C_MUX_GPIO_H */ From patchwork Fri Dec 22 15:55:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 757693 Received: from mail-lj1-f182.google.com (mail-lj1-f182.google.com [209.85.208.182]) (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 8A1BD2376B for ; Fri, 22 Dec 2023 15:55:22 +0000 (UTC) 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="kgqcR0GU" Received: by mail-lj1-f182.google.com with SMTP id 38308e7fff4ca-2cca9a9362aso9181891fa.3 for ; Fri, 22 Dec 2023 07:55:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1703260520; x=1703865320; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:autocrypt:references:cc:to :from:content-language:subject:user-agent:mime-version:date :message-id:from:to:cc:subject:date:message-id:reply-to; bh=qZkaVyceP1VLLqnBEoqxsOvZOt3NvGiEwHenKANI6Ww=; b=kgqcR0GUSleUyKMYSMr0c0czrL0mgl6XYBDPbt89xQoCRfKVSBM8ei3Wb1JTgSfWI1 hUWZxB/1v2vkI3LL2KKE0FbPylQJ6GLlMhCgMpxw6A9HFjtAiSjQg6Czy7M2c+d56Fi3 4pu+HyBQXWkJxJyeAlxQ9eqf7R9V669cze23VEfexbaRdmLmbKuCef+IjEpL6DbbLn/d h0bCR1LMp0Q95FMGTKV2McKQEruvvS5bYAflxUI/asLvDXHZWa+HkN66VydJO+Y/XtaA pz2SIox6e5HdVyPIZH+2AvUu4dZRYYgfjcyQCHSvcmaZQuz7Mbya8NoVkaO1iK+5Lgva bKLA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1703260520; x=1703865320; h=content-transfer-encoding:in-reply-to:autocrypt:references:cc:to :from:content-language:subject:user-agent:mime-version:date :message-id:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=qZkaVyceP1VLLqnBEoqxsOvZOt3NvGiEwHenKANI6Ww=; b=Qn7A3qmPJlJVo7+IFmhmcjZK27oFJbpAkzRmDv2k6938K+uTVqp7Gn63QBOyzhSLk/ MoMO9cbXZ9EYyKSN3LuJGbqGT6Y4VI0yHXYz6Mey8UI4Ik0kb4sUpAPPyNdL5D4M22lg PwFaOBICwo9vlD9NLgcXJ5ZaWhsKZeNoV4Eed+qg1J4cyCAR92pcgAij8npwdwkOkgDV CTRDt5QXyRtvSX3uF4pY7F/M+mfDIn2ZZdF6b6jpnme/S7gB5B/wi63OrGAm82QiC+1t RuPYeBNodmbKF/djQHSU/XqJJCvpVb4ooQA4Qfq39lolRaaU7jCbivK4Adk5xq0L05Vu G92A== X-Gm-Message-State: AOJu0Yzm9t+VdMRR++nL3WnMQ1c6E7WQRfJ7fNP3rSwvLyTdhJfs25vH XeDUNUenmWnqPCxNesSFPl0= X-Google-Smtp-Source: AGHT+IFRYvbkuQZvCKTjI2TiKr0wnSLQXeOvyEW482D2pjS7yTKguoeS+qlG79AMwigSnBhZJxU2LA== X-Received: by 2002:ac2:44da:0:b0:50e:5937:d962 with SMTP id d26-20020ac244da000000b0050e5937d962mr432736lfm.103.1703260520126; Fri, 22 Dec 2023 07:55:20 -0800 (PST) Received: from ?IPV6:2a01:c22:76fe:e700:90c7:5d23:5f70:b2c6? 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[2a01:c22:76fe:e700:90c7:5d23:5f70:b2c6]) by smtp.googlemail.com with ESMTPSA id az16-20020a170907905000b00a26ac53c2b7sm1519145ejc.98.2023.12.22.07.55.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 Dec 2023 07:55:19 -0800 (PST) Message-ID: <1e7aa485-8d8b-48c3-ac2b-85f6d40404cd@gmail.com> Date: Fri, 22 Dec 2023 16:55:21 +0100 Precedence: bulk X-Mailing-List: linux-i2c@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH RFC 3/3] i2c: i801: Call i2c_register_spd() on muxed bus segments Content-Language: en-US From: Heiner Kallweit To: Jean Delvare , Andi Shyti , Wolfram Sang , Peter Korsgaard , Peter Rosin Cc: "linux-i2c@vger.kernel.org" References: Autocrypt: addr=hkallweit1@gmail.com; keydata= xsFNBF/0ZFUBEAC0eZyktSE7ZNO1SFXL6cQ4i4g6Ah3mOUIXSB4pCY5kQ6OLKHh0FlOD5/5/ sY7IoIouzOjyFdFPnz4Bl3927ClT567hUJJ+SNaFEiJ9vadI6vZm2gcY4ExdIevYHWe1msJF MVE4yNwdS+UsPeCF/6CQQTzHc+n7DomE7fjJD5J1hOJjqz2XWe71fTvYXzxCFLwXXbBiqDC9 dNqOe5odPsa4TsWZ09T33g5n2nzTJs4Zw8fCy8rLqix/raVsqr8fw5qM66MVtdmEljFaJ9N8 /W56qGCp+H8Igk/F7CjlbWXiOlKHA25mPTmbVp7VlFsvsmMokr/imQr+0nXtmvYVaKEUwY2g 86IU6RAOuA8E0J5bD/BeyZdMyVEtX1kT404UJZekFytJZrDZetwxM/cAH+1fMx4z751WJmxQ J7mIXSPuDfeJhRDt9sGM6aRVfXbZt+wBogxyXepmnlv9K4A13z9DVLdKLrYUiu9/5QEl6fgI kPaXlAZmJsQfoKbmPqCHVRYj1lpQtDM/2/BO6gHASflWUHzwmBVZbS/XRs64uJO8CB3+V3fa cIivllReueGCMsHh6/8wgPAyopXOWOxbLsZ291fmZqIR0L5Y6b2HvdFN1Xhc+YrQ8TKK+Z4R mJRDh0wNQ8Gm89g92/YkHji4jIWlp2fwzCcx5+lZCQ1XdqAiHQARAQABzSZIZWluZXIgS2Fs bHdlaXQgPGhrYWxsd2VpdDFAZ21haWwuY29tPsLBjgQTAQgAOBYhBGxfqY/yOyXjyjJehXLe ig9U8DoMBQJf9GRVAhsDBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAAAoJEHLeig9U8DoMSycQ AJbfg8HZEK0ljV4M8nvdaiNixWAufrcZ+SD8zhbxl8GispK4F3Yo+20Y3UoZ7FcIidJWUUJL axAOkpI/70YNhlqAPMsuudlAieeYZKjIv1WV5ucNZ3VJ7dC+dlVqQdAr1iD869FZXvy91KhJ wYulyCf+s4T9YgmLC6jLMBZghKIf1uhSd0NzjyCqYWbk2ZxByZHgunEShOhHPHswu3Am0ftt ePaYIHgZs+Vzwfjs8I7EuW/5/f5G9w1vibXxtGY/GXwgGGHRDjFM7RSprGOv4F5eMGh+NFUJ TU9N96PQYMwXVxnQfRXl8O6ffSVmFx4H9rovxWPKobLmqQL0WKLLVvA/aOHCcMKgfyKRcLah 57vGC50Ga8oT2K1g0AhKGkyJo7lGXkMu5yEs0m9O+btqAB261/E3DRxfI1P/tvDZpLJKtq35 dXsj6sjvhgX7VxXhY1wE54uqLLHY3UZQlmH3QF5t80MS7/KhxB1pO1Cpcmkt9hgyzH8+5org +9wWxGUtJWNP7CppY+qvv3SZtKJMKsxqk5coBGwNkMms56z4qfJm2PUtJQGjA65XWdzQACib 2iaDQoBqGZfXRdPT0tC1H5kUJuOX4ll1hI/HBMEFCcO8++Bl2wcrUsAxLzGvhINVJX2DAQaF aNetToazkCnzubKfBOyiTqFJ0b63c5dqziAgzsFNBF/0ZFUBEADF8UEZmKDl1w/UxvjeyAeX kghYkY3bkK6gcIYXdLRfJw12GbvMioSguvVzASVHG8h7NbNjk1yur6AONfbUpXKSNZ0skV8V fG+ppbaY+zQofsSMoj5gP0amwbwvPzVqZCYJai81VobefTX2MZM2Mg/ThBVtGyzV3NeCpnBa 8AX3s9rrX2XUoCibYotbbxx9afZYUFyflOc7kEpc9uJXIdaxS2Z6MnYLHsyVjiU6tzKCiVOU KJevqvzPXJmy0xaOVf7mhFSNQyJTrZpLa+tvB1DQRS08CqYtIMxRrVtC0t0LFeQGly6bOngr ircurWJiJKbSXVstLHgWYiq3/GmCSx/82ObeLO3PftklpRj8d+kFbrvrqBgjWtMH4WtK5uN5 1WJ71hWJfNchKRlaJ3GWy8KolCAoGsQMovn/ZEXxrGs1ndafu47yXOpuDAozoHTBGvuSXSZo ythk/0EAuz5IkwkhYBT1MGIAvNSn9ivE5aRnBazugy0rTRkVggHvt3/7flFHlGVGpBHxFUwb /a4UjJBPtIwa4tWR8B1Ma36S8Jk456k2n1id7M0LQ+eqstmp6Y+UB+pt9NX6t0Slw1NCdYTW gJezWTVKF7pmTdXszXGxlc9kTrVUz04PqPjnYbv5UWuDd2eyzGjrrFOsJEi8OK2d2j4FfF++ AzOMdW09JVqejQARAQABwsF2BBgBCAAgFiEEbF+pj/I7JePKMl6Fct6KD1TwOgwFAl/0ZFUC GwwACgkQct6KD1TwOgxUfg//eAoYc0Vm4NrxymfcY30UjHVD0LgSvU8kUmXxil3qhFPS7KA+ y7tgcKLHOkZkXMX5MLFcS9+SmrAjSBBV8omKoHNo+kfFx/dUAtz0lot8wNGmWb+NcHeKM1eb nwUMOEa1uDdfZeKef/U/2uHBceY7Gc6zPZPWgXghEyQMTH2UhLgeam8yglyO+A6RXCh+s6ak Wje7Vo1wGK4eYxp6pwMPJXLMsI0ii/2k3YPEJPv+yJf90MbYyQSbkTwZhrsokjQEaIfjrIk3 rQRjTve/J62WIO28IbY/mENuGgWehRlTAbhC4BLTZ5uYS0YMQCR7v9UGMWdNWXFyrOB6PjSu Trn9MsPoUc8qI72mVpxEXQDLlrd2ijEWm7Nrf52YMD7hL6rXXuis7R6zY8WnnBhW0uCfhajx q+KuARXC0sDLztcjaS3ayXonpoCPZep2Bd5xqE4Ln8/COCslP7E92W1uf1EcdXXIrx1acg21 H/0Z53okMykVs3a8tECPHIxnre2UxKdTbCEkjkR4V6JyplTS47oWMw3zyI7zkaadfzVFBxk2 lo/Tny+FX1Azea3Ce7oOnRUEZtWSsUidtIjmL8YUQFZYm+JUIgfRmSpMFq8JP4VH43GXpB/S OCrl+/xujzvoUBFV/cHKjEQYBxo+MaiQa1U54ykM2W4DnHb1UiEf5xDkFd4= In-Reply-To: Instruct child adapters to call i2c_register_spd() for each muxed bus segment. Signed-off-by: Heiner Kallweit --- drivers/i2c/busses/i2c-i801.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 070999139..dd68335f8 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -1402,6 +1402,7 @@ static void i801_add_mux(struct i801_priv *priv) gpio_data.n_values = mux_config->n_values; gpio_data.classes = mux_config->classes; gpio_data.idle = I2C_MUX_GPIO_NO_IDLE; + gpio_data.register_spd = 1; /* Register GPIO descriptor lookup table */ lookup = devm_kzalloc(dev,