From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) (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 32E981494CC; Thu, 3 Apr 2025 21:46:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.44 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743716799; cv=none; b=Mfjt215B38x7/1y7p9VUzY5Px8ySdtMys29lq23ojM1NbYNP6K1zY7zW2mtwiy7Jl9HDK2f4HPUs6RQthlReyVwOi0aBAxcglKTm47Ilb3StPQaYGwChHZmxrsLHXJ6WeUCwhZZpNwGvOd9QwjJVbJ9tnl8W4ucMjykfKIYNmUg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743716799; c=relaxed/simple; bh=UoHi17w8zgHvpFGQto+G13hZRwmTH8OcIzC9cvweJ94=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=k/yE0ExhFegSk2qAYx5hpcGsSnUc/F4roKdH21S8jzxWUppk186ROrLzGcrn8Z74PjZ5/m3a22qgUnY3ehpCIN4Z3Zh27u+RIS77O3yfMR11GlCVgHywrX48mypur6kvqvQVRNU88KryWrMy0ZJSnJnOHzfBADXeaSmXg90pqhA= 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=iUrRfy1W; arc=none smtp.client-ip=209.85.128.44 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="iUrRfy1W" Received: by mail-wm1-f44.google.com with SMTP id 5b1f17b1804b1-43ce71582e9so9529495e9.1; Thu, 03 Apr 2025 14:46:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1743716796; x=1744321596; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=KDLT5jaOfTvnXrHcbjmxYiedZsavDNsVTNdUJK4Wfl8=; b=iUrRfy1Wmpgodg/UJzrDsD4g5H6fiotEQ5YmUlhWVGHsJQNgXES/1uqHdL6Slkpbcz WdBnxnsle+MaVPMvc+z/hqQ0cU6FeMtvor0scjWivwcrukxwF5RTk+nlwbGfjVG+mj48 UzLRe9Y/IDsuXoSTQJhAAWAUkr7zXWiekoMYR6EXfmrL+JjFPQSVxTPucxMDIqsf4MyH xldk+/mkxoH4wSpgvS9qkaKVfOi8RC7Pd/JggUzqq5lyHmpcEifobiCj8y2CLqH252Il saGmsrT/SpNQPrm/fIqRnt1QUM3VPsp8BFnMGO7euGEM9kajDalsEBLzdu7xdkntjMLR ZH2w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743716796; x=1744321596; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=KDLT5jaOfTvnXrHcbjmxYiedZsavDNsVTNdUJK4Wfl8=; b=vbJBKtg45OtZErigGqTCKC8zrolj6u57pDauhgKGy02jV1g9K0lDFspF/A2QMfFweM Eiwk3riSjPo6G2N+1kdj0WmG69572dW2I1SuGoZiLNRfeRi2r5LgkLi4D31fnJlXH9tC j2qFHvvTvxgVAILRkHaxL6Hhn0WgTHZgHdwv/OtJk6r7wPolcBwb3ke3iHlxNC0Pg9Rn xBi4Qx0jxKcKcoQL/DrNxUPz5HYGyaEasCgeVOLzU/ctv/4/Y7pV4oyOcgQNnGf1mt4J eqHhuLgdh+eGmpDvO4S5VMvQOtwxMoNZBpCpo7aBISjjNUWuIcnDh2cDFl8W8mAl9ltT XdPA== X-Forwarded-Encrypted: i=1; AJvYcCULI1tVethUEb+iCThqXaZ/hFQD+fx0xkCTducu6N19rieQaCzsw5afP7Oh+YbGZW/3eEsxAvQj@vger.kernel.org, AJvYcCXMmQzXsW9N4dSXmFqD18K6RBneP5vPInrrnMY9UwJ4CqKzjKeNwrJWfsc9FmGdHdEvH5DM+fYjqtnLc9k=@vger.kernel.org X-Gm-Message-State: AOJu0YzQdeGgFiAdpiPh7UalCEIje46PEX38Z98t0DyqYGJZDUBvkfmM AXVbYJdpZ4pIDZLVFK4GMWyA3VEhiv4CUttqIpeZCf8RTKAAh0tv X-Gm-Gg: ASbGncsDqXkA96baBKRlleHWFttKDmbSZ8EvK9iH7i2UAZAznE5sJaCKq9MOi/YNV/S jGhd9FyZ17BDm5pXr037eaEuepGGqB9Lio2TfxPc3ORi/bdVve5Td2ksV1F89FnE2JdpEQjN08D RivzUd499bW+SQ7KLswkVUZqLCixYod/Hj1tnfRC6PoQpXzNYy/jQL5LfRe5Z3hz3t+m/z25hVN GkmdOAy3FGJRB3agVZB8uNFPBWPHzJ7hOi7JBu8Ix5WJBwPDi1lu+Q018T0+jbzJTQrkeb6zPbx vg0U/MEHVob1Gqeyqy6SZljduYYRQhVhIHV0tjfFbluPtn4ep/tDGy2Cej0= X-Google-Smtp-Source: AGHT+IFtF/KVAoDcggALyJa6yUnhhZ7LhPdgH+LEEouPBpTHX9lLc/XZJT72W1VXptDBNhM5KaENqg== X-Received: by 2002:a05:600c:1d12:b0:43c:fd72:f028 with SMTP id 5b1f17b1804b1-43ed0db3ba4mr2585675e9.29.1743716796219; Thu, 03 Apr 2025 14:46:36 -0700 (PDT) Received: from [192.168.0.2] ([212.50.121.5]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39c301b76f2sm2788425f8f.53.2025.04.03.14.46.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 03 Apr 2025 14:46:34 -0700 (PDT) Message-ID: Date: Fri, 4 Apr 2025 00:47:01 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: GNSS support for Qualcomm PCIe modem device To: Muhammad Nuzaihan , Slark Xiao Cc: Loic Poulain , manivannan.sadhasivam@linaro.org, netdev@vger.kernel.org, Qiang Yu , johan@kernel.org, mhi@lists.linux.dev, linux-kernel@vger.kernel.org References: <2703842b.58be.195fa426e5e.Coremail.slark_xiao@163.com> Content-Language: en-US From: Sergey Ryazanov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Slark, Zaihan, Zaihn, congratulations with the progress, curious to see the result. Slark, thank you for remind me. It's a good moment. Lets see how we can prototype it. Will try to do it this weekend and send some RFC next week. On 03.04.2025 11:42, Muhammad Nuzaihan wrote: > Hi Slark, > > I just implemented it in the wwan subsystem since it works for me (even > without flow control). I wanted to port it to use GPS subsystem, > however, debugging in GPS subsystem is too troublesome, especially when > the driver crashes. > > Unless i can have some VM with direct access to the Quectel hardware so > i don't need to keep rebooting my machine if it crashes. > > For now, i am getting GNSS/NMEA data from Quectel with MHI wwan > modifications. > > Regards, > Zaihan > > > On Thu, Apr 3 2025 at 04:02:01 PM +0800, Muhammad Nuzaihan > wrote: >> Hi Slark, >> >> I just implemented it in the wwan subsystem since it works for me >> (even without flow control). I wanted to port it to use GPS subsystem, >> however, debugging in GPS subsystem is too troublesome, especially >> when the driver crashes. >> >> Unless i can have some VM with direct access to the Quectel hardware >> so i don't need to keep rebooting my machine if it crashes. >> >> For now, i am getting GNSS/NMEA data from Quectel with MHI wwan >> modifications. >> >> Regards, >> Zaihan >> >> On Thu, Apr 3 2025 at 02:06:52 PM +0800, Slark Xiao >> wrote: >>> >>> Hi Sergey, Muhammad, >>> This is Slark. We have a discussion about the feature of GNSS/NMEA >>> over QC PCIe modem >>> device since 2024/12.May I know if we have any progress on this feature? >>> >>> It's really a common requirement for modem device since we have >>> received some complaint >>> from our customer. Please help provide your advice. -- Sergey