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Tue, 09 Jun 2026 15:18:08 -0700 (PDT) Received: from alsa-dev.int.suenodeluz.com.do ([74.244.193.113]) by smtp.gmail.com with ESMTPSA id 956f58d0204a3-660d6205a5bsm11414260d50.10.2026.06.09.15.18.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Jun 2026 15:18:07 -0700 (PDT) From: Frank van de Pol To: tiwai@suse.de, perex@perex.cz Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, Frank van de Pol Subject: [PATCH 0/1] ALSA: usb: Add support for Reloop Jockey 3 DJ controllers Date: Tue, 9 Jun 2026 18:16:42 -0400 Message-ID: <20260609221643.3439698-1-fvdpol@gmail.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Takashi, Hello ALSA community, After being away from active ALSA development for some 25 years or so, I am happy to submit this patch to introduce a dedicated driver supporting the Jockey 3 series of DJ Controllers made by Reloop (specifically covering the Master Edition and the Remix variants). I initially evaluated the feasibility of integrating the required logic to handle the non-standard proprietary Ploytec framing protocol into the standard USB-audio driver via quirks. However, doing so would require introducing numerous hardware-specific exceptions throughout the core layout, adding significant complexity. A clean, isolated driver subdirectory provides much better long-term maintainability without cluttering the existing class-compliant architecture. I have successfully validated and stress-tested this driver across three distinct hardware architectures to ensure robustness regarding DMA, timing, and memory alignment: - x86_64 (Standard PC desktop environment) - armhf (32-bit legacy environment on a Raspberry Pi 1B) - arm64 (64-bit modern SoC environment on a Raspberry Pi 4) I look forward to your review and feedback, and I am more than happy to make architectural adjustments as required. Best regards, Frank van de Pol Frank van de Pol (1): ALSA: usb: Add support for Reloop Jockey 3 DJ controllers MAINTAINERS | 7 + sound/usb/Kconfig | 1 + sound/usb/Makefile | 1 + sound/usb/jockey3/Kconfig | 19 + sound/usb/jockey3/Makefile | 3 + sound/usb/jockey3/jockey3.c | 841 ++++++++++++++++++++++++++++++ sound/usb/jockey3/ploytec_codec.c | 116 +++++ sound/usb/jockey3/ploytec_codec.h | 34 ++ 8 files changed, 1022 insertions(+) create mode 100644 sound/usb/jockey3/Kconfig create mode 100644 sound/usb/jockey3/Makefile create mode 100644 sound/usb/jockey3/jockey3.c create mode 100644 sound/usb/jockey3/ploytec_codec.c create mode 100644 sound/usb/jockey3/ploytec_codec.h -- 2.47.3