From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ixit.cz (ip-94-112-25-9.bb.vodafone.cz [94.112.25.9]) (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 967BF3126BD; Tue, 2 Dec 2025 11:55:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=94.112.25.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764676504; cv=none; b=qR7jo1+FuUN5eHeOHul+za+yCjCaMtmW4lQ21WvdRMRfurLcvzXgdR4SKETc3ORbqb3dRFllcZyfz9kkwCx+6gEHgXOYBIQ6BWWztVYCXNDQFL+SwKmcLSEY0Pz0AKYKSYQXXlFEpJtykxMCm9k9WbbXB5cTG+GAF/vw5uPJLNE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764676504; c=relaxed/simple; bh=6KBJDDO+XHsx/PuDzZzSe7gEWnyg5xv3GKYIKizGq3w=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Cu0sc67L2mU5rWTjK6HkZ4KmKOEyusmf6HDx1Q67oVFAwgOy+QUk5bIplnWw0wjvpvqGyQ2E7Ahgt00lX1KOVs2iWfUoJhSlXBVVWi7FXocSNTEGym71YzgwCXKka+ynZrbK3Kbw/bAxsIERXHKVWOSBFja2pKakEiAMYZXUqj4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ixit.cz; spf=pass smtp.mailfrom=ixit.cz; dkim=pass (1024-bit key) header.d=ixit.cz header.i=@ixit.cz header.b=C76GaQdy; arc=none smtp.client-ip=94.112.25.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ixit.cz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ixit.cz Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ixit.cz header.i=@ixit.cz header.b="C76GaQdy" Received: from [10.0.0.200] (unknown [10.0.0.1]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange x25519) (No client certificate requested) by ixit.cz (Postfix) with ESMTPSA id D0CED5340D08; Tue, 02 Dec 2025 12:54:57 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ixit.cz; s=dkim; t=1764676497; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:autocrypt:autocrypt; bh=og3cF3k0PjodDE4Wtmlo7MrvRlp/2RHJA8actY/OrbQ=; b=C76GaQdycV3T7akLMspCp/PpFS3NxbvUvjRvmpgMlKxOSGfnmsxic8pZwCaUw7tUL3fG1n l1uXuxcOKdt8o5QdCLch4CgcDMeLvfHOx3XCk6BeOTGG1UwNzciVZSA6Zwbe842VWQLAkE 3o3So3dxUeoZKZmmFN2SmLKe+jwKl28= Message-ID: <90f0da32-7101-482e-bfd2-ff1702d1a9f4@ixit.cz> Date: Tue, 2 Dec 2025 12:54:57 +0100 Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 0/7] Input: synaptics-rmi4 - add quirks for third party touchscreen controllers To: Kaustabh Chakraborty , Dmitry Torokhov , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "Jason A. Donenfeld" , Matthias Schiffer , Vincent Huang Cc: linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Casey Connolly , phone-devel@vger.kernel.org, Krzysztof Kozlowski , Pavel Machek References: <20251113-synaptics-rmi4-v6-0-d9836afab801@ixit.cz> Content-Language: en-US From: David Heidelberg Autocrypt: addr=david@ixit.cz; keydata= xsFNBF5v1x4BEADS3EddwsNsvVAI1XF8uQKbdYPY/GhjaSLziwVnbwv5BGwqB1tfXoHnccoA 9kTgKAbiXG/CiZFhD6l4WCIskQDKzyQN3JhCUIxh16Xyw0lECI7iqoW9LmMoN1dNKcUmCO9g lZxQaOl+1bY/7ttd7DapLh9rmBXJ2lKiMEaIpUwb/Nw0d7Enp4Jy2TpkhPywIpUn8CoJCv3/ 61qbvI9y5utB/UhfMAUXsaAgwEJyGPAqHlC0YZjaTwOu+YQUE3AFzhCbksq95CwDz4U4gdls dmv9tkATfu2OmzERZQ6vJTehK0Pu4l5KmCAzYg42I9Dy4E6b17x6NncKbcByQFOXMtG0qVUk F1yeeOQUHwu+8t3ZDMBUhCkRL/juuoqLmyDWKMc0hKNNeZ9BNXgB8fXkRLWEUfgDXsFyEkKp NxUy5bDRlivf6XfExnikk5kj9l2gGlNQwqROti/46bfbmlmc/a2GM4k8ZyalHNEAdwtXYSpP 8JJmlbQ7hNTLkc3HQLRsIocN5th/ur7pPMz1Beyp0gbE9GcOceqmdZQB80vJ01XDyCAihf6l AMnzwpXZsjqIqH9r7T7tM6tVEVbPSwPt4eZYXSoJijEBC/43TBbmxDX+5+3txRaSCRQrG9dY k3mMGM3xJLCps2KnaqMcgUnvb1KdTgEFUZQaItw7HyRd6RppewARAQABzSBEYXZpZCBIZWlk ZWxiZXJnIDxkYXZpZEBpeGl0LmN6PsLBlAQTAQgAPgIbAwULCQgHAgYVCgkICwIEFgIDAQIe AQIXgBYhBNd6Cc/u3Cu9U6cEdGACP8TTSSByBQJl+KksBQkPDaAOAAoJEGACP8TTSSBy6IAQ AMqFqVi9LLxCEcUWBn82ssQGiVSDniKpFE/tp7lMXflwhjD5xoftoWOmMYkiWE86t5x5Fsp7 afALx7SEDz599F1K1bLnaga+budu55JEAYGudD2WwpLJ0kPzRhqBwGFIx8k6F+goZJzxPDsf loAtXQE62UvEKa4KRRcZmF0GGoRsgA7vE7OnV8LMeocdD3eb2CuXLzauHAfdvqF50IfPH/sE jbzROiAZU+WgrwU946aOzrN8jVU+Cy8XAccGAZxsmPBfhTY5f2VN1IqvfaRdkKKlmWVJWGw+ ycFpAEJKFRdfcc5PSjUJcALn5C+hxzL2hBpIZJdfdfStn+DWHXNgBeRDiZj1x6vvyaC43RAb VXvRzOQfG4EaMVMIOvBjBA/FtIpb1gtXA42ewhvPnd5RVCqD9YYUxsVpJ9d+XsAy7uib3BsV W2idAEsPtoqhVhq8bCUs/G4sC2DdyGZK8MRFDJqciJSUbqA+5z1ZCuE8UOPDpZKiW6H/OuOM zDcjh0lOzr4p+/1TSg1PbUh7fQ+nbMuiT044sC1lLtJK0+Zyn0GwhR82oNM4fldNsaHRW42w QGD35+eNo5Pvb3We5XRMlBdhFnj7Siggp4J8/PJ6MJvRyC+RIJPGtbdMB2/RxWunFLn87e5w UgwR9jPMHAstuTR1yR23c4SIYoQ2fzkrRzuazsFNBF5v1x4BEADnlrbta2WL87BlEOotZUh0 zXANMrNV15WxexsirLetfqbs0AGCaTRNj+uWlTUDJRXOVIwzmF76Us3I2796+Od2ocNpLheZ 7EIkq8budtLVd1c06qJ+GMraz51zfgSIazVInNMPk9T6fz0lembji5yEcNPNNBA4sHiFmXfo IhepHFOBApjS0CiOPqowYxSTPe/DLcJ/LDwWpTi37doKPhBwlHev1BwVCbrLEIFjY0MLM0aT jiBBlyLJaTqvE48gblonu2SGaNmGtkC3VoQUQFcVYDXtlL9CVbNo7BAt5gwPcNqEqkUL60Jh FtvVSKyQh6gn7HHsyMtgltjZ3NKjv8S3yQd7zxvCn79tCKwoeNevsvoMq/bzlKxc9QiKaRPO aDj3FtW7R/3XoKJBY8Hckyug6uc2qYWRpnuXc0as6S0wfek6gauExUttBKrtSbPPHiuTeNHt NsT4+dyvaJtQKPBTbPHkXpTO8e1+YAg7kPj3aKFToE/dakIh8iqUHLNxywDAamRVn8Ha67WO AEAA3iklJ49QQk2ZyS1RJ2Ul28ePFDZ3QSr9LoJiOBZv9XkbhXS164iRB7rBZk6ZRVgCz3V6 hhhjkipYvpJ/fpjXNsVL8jvel1mYNf0a46T4QQDQx4KQj0zXJbC2fFikAtu1AULktF4iEXEI rSjFoqhd4euZ+QARAQABwsF8BBgBCAAmAhsMFiEE13oJz+7cK71TpwR0YAI/xNNJIHIFAmX4 qVAFCQ8NoDIACgkQYAI/xNNJIHKN4A/+Ine2Ii7JiuGITjJkcV6pgKlfwYdEs4eFD1pTRb/K 5dprUz3QSLP41u9OJQ23HnESMvn31UENk9ffebNoW7WxZ/8cTQY0JY/cgTTrlNXtyAlGbR3/ 3Q/VBJptf04Er7I6TaKAmqWzdVeKTw33LljpkHp02vrbOdylb4JQG/SginLV9purGAFptYRO 8JNa2J4FAQtQTrfOUjulOWMxy7XRkqK3QqLcPW79/CFn7q1yxamPkpoXUJq9/fVjlhk7P+da NYQpe4WQQnktBY29SkFnvfIAwqIVU8ix5Oz8rghuCcAdR7lEJ7hCX9bR0EE05FOXdZy5FWL9 GHvFa/Opkq3DPmFl/0nt4HJqq1Nwrr+WR6d0414oo1n2hPEllge/6iD3ZYwptTvOFKEw/v0A yqOoYSiKX9F7Ko7QO+VnYeVDsDDevKic2T/4GDpcSVd9ipiKxCQvUAzKUH7RUpqDTa+rYurm zRKcgRumz2Tc1ouHj6qINlzEe3a5ldctIn/dvR1l2Ko7GBTG+VGp9U5NOAEkGpxHG9yg6eeY fFYnMme51H/HKiyUlFiE3yd5LSmv8Dhbf+vsI4x6BOOOq4Iyop/Exavj1owGxW0hpdUGcCl1 ovlwVPO/6l/XLAmSGwdnGqok5eGZQzSst0tj9RC9O0dXO1TZocOsf0tJ8dR2egX4kxM= In-Reply-To: <20251113-synaptics-rmi4-v6-0-d9836afab801@ixit.cz> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 13/11/2025 17:30, David Heidelberg via B4 Relay wrote: > With the growing popularity of running upstream Linux on mobile devices, > we're beginning to run into more and more edgecases. The OnePlus 6 is a > fairly well supported 2018 era smartphone, selling over a million units > in it's first 22 days. With this level of popularity, it's almost > inevitable that we get third party replacement displays, and as a > result, replacement touchscreen controllers. > > The OnePlus 6 shipped with an extremely usecase specific touchscreen > driver, it implemented only the bare minimum parts of the highly generic > rmi4 protocol, instead hardcoding most of the register addresses. > > As a result, the third party touchscreen controllers that are often > found in replacement screens, implement only the registers that the > downstream driver reads from. They additionally have other restrictions > such as heavy penalties on unaligned reads. > > This series attempts to implement the necessary workaround to support > some of these chips with the rmi4 driver. Although it's worth noting > that at the time of writing there are other unofficial controllers in > the wild that don't work even with these patches. > > We have been shipping these patches in postmarketOS for the last several > years, and they are known to not cause any regressions on the OnePlus > 6/6T (with the official Synaptics controller), however I don't own any > other rmi4 hardware to further validate this. > > The series is also available (until merged) at > https://gitlab.com/sdm845/sdm845-next/-/commits/b4/synaptics-rmi4 > > --- > Changes in v6: > - Rebased on top of next-20251113. > - No other change since the Rob Herring comment. > - Link to v5: https://lore.kernel.org/r/20250410-synaptics-rmi4-v5-0-b41bb90f78b9@ixit.cz [...] Hello Dmitry, May I ask whether this series will make it into 6.19? I realize it may be unlikely, but I’m beginning to feel that this series is being overlooked. I’m very willing to improve it and help make the mainline experience better, but I can’t do so without any feedback. Since Rob indicated that this approach appears to be the right direction, please let me know if there is anything I can do to move it forward. Thank you, David