linux-kernel - Re: [PATCH v5 0/6] Add spi-hid, transport for HID over SPI bus

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Message-ID: <6fe399c7-9c88-4e5a-b1a6-1bc62482655d@kernel.org>
Date: Tue, 25 Feb 2025 22:00:02 +0100
From: Konrad Dybcio <konradybcio@...nel.org>
To: Jarrett Schultz <jaschultzms@...il.com>,
 Dmitry Torokhov <dmitry.torokhov@...il.com>, Rob Herring
 <robh+dt@...nel.org>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>, Jonathan Corbet <corbet@....net>,
 Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
 Jiri Kosina <jikos@...nel.org>,
 Benjamin Tissoires <benjamin.tissoires@...hat.com>,
 Bjorn Andersson <bjorn.andersson@...aro.org>, Shawn Guo
 <shawnguo@...nel.org>, Geert Uytterhoeven <geert+renesas@...der.be>,
 Marcel Ziswiler <marcel.ziswiler@...adex.com>,
 Biju Das <biju.das.jz@...renesas.com>,
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, Vinod Koul <vkoul@...nel.org>
Cc: Dmitry Antipov <dmanti@...rosoft.com>, linux-input@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-doc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 Jarrett Schultz <jaschultz@...rosoft.com>
Subject: Re: [PATCH v5 0/6] Add spi-hid, transport for HID over SPI bus

On 7.07.2022 6:58 PM, Jarrett Schultz wrote:
> From: Jarrett Schultz <jaschultz@...rosoft.com>
> 
> Surface Duo devices use a touch digitizer that communicates to the main
> SoC via SPI and presents itself as a HID device. This patch's goal is to
> add the spi-hid transport driver to drivers/hid. The driver follows the
> publically available HID Over SPI Protocol Specification version 1.0.
> 
> The specification is available at
> https://www.microsoft.com/en-us/download/details.aspx?id=103325.

Hi, I know this is a bit of an old thread..

The spec mentions some oddities around dual or quad SPI - do you
perhaps have some version of this patchset that implements those?

Konrad