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d="scan'208";a="280536179" Received: from rwthex-s2-a.rwth-ad.de ([134.130.26.154]) by mail-in-4.itc.rwth-aachen.de with ESMTP; 09 Sep 2025 15:05:18 +0200 Received: from [IPV6:2a00:8a60:c000:1:6109:d098:ebb8:aa0] (2a00:8a60:c000:1:6109:d098:ebb8:aa0) by rwthex-s2-a.rwth-ad.de (2a00:8a60:1:e500::26:154) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.36; Tue, 9 Sep 2025 15:05:17 +0200 Message-ID: <03b0cd37-4b05-4b5e-a395-5e5d405e1b20@rwth-aachen.de> Date: Tue, 9 Sep 2025 15:05:17 +0200 Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/2] samples: rust: add a USB driver sample To: Greg Kroah-Hartman CC: Daniel Almeida , Danilo Krummrich , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Michal Wilczynski , Igor Korotin , , , References: <20250825-b4-usb-v1-2-7aa024de7ae8@collabora.com> <2025090618-smudgy-cringing-a7a4@gregkh> <2025090601-iron-glitter-c77d@gregkh> <831C4AE2-6964-4699-9E74-E4B721B87B17@collabora.com> <9657C897-087E-4544-849B-964E99D95A50@collabora.com> <85B643A9-1657-43ED-BE98-BE7E502D08DA@collabora.com> <3aca9e74-b67c-4bfe-a206-9a6eecdf76ab@rwth-aachen.de> <2025090916-dill-elated-3d68@gregkh> Content-Language: en-US From: Simon Neuenhausen In-Reply-To: <2025090916-dill-elated-3d68@gregkh> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-ClientProxiedBy: RWTHEX-S2-B.rwth-ad.de (2a00:8a60:1:e500::26:155) To rwthex-s2-a.rwth-ad.de (2a00:8a60:1:e500::26:154) (Sorry for sending this again. I forgot to hit reply all, since I'm pretty new to this.) On 09.09.25 14:14, Greg Kroah-Hartman wrote: > On Tue, Sep 09, 2025 at 01:19:12PM +0200, Simon Neuenhausen wrote: >> Hi, >> >>> On 06.09.25 17:46, Daniel Almeida wrote: >>> As I said to Greg above, Iā€™m here to help if anyone wants to write a >>> USB >>> driver. Those interested >> are free to reach out to me and we will work together to merge the >> required >> abstractions with a real user in mind. Hopefully this encourages >> others to >> join in this work šŸ™‚ >> I had planned on writing a USB driver for TI nspire calculators, that >> would >> make them mountable as USB mass storage devices, since they use a >> proprietary USB protocol, that usually requires paid software from >> TI. At >> the time I gave up on that, due to the lack of USB support in RFL, but I >> could revive the effort using this. > usb-storage is really just SCSI, so if you want to try to do this, you > are going to have to write a scsi driver for the calculator.Ā  Not > something you probably really want to do šŸ™ AFAIK it's not actually SCSI, but some custom USB protocol, that doesn't work on blocks, but files and directories directly. It also allows taking screenshots and performing firmware updates. > Odd are this would be a much simpler userspace program instead, as you > can control USB devices directly from userspace, no kernel driver > needed. Yes, a userspace program using FUSE would probably be simpler, since there's already exists "libnspire" for interacting with nspire calculators in userspace. As I said, it's gimmicky. Greetings Simon