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Mon, 29 Jun 2026 10:30:10 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id G+JMJDJJQmrEHgAAD6G6ig (envelope-from ); Mon, 29 Jun 2026 10:30:10 +0000 Date: Mon, 29 Jun 2026 12:30:10 +0200 Message-ID: <87y0fxprkd.wl-tiwai@suse.de> From: Takashi Iwai To: Federico Beffa Cc: perex@perex.cz, tiwai@suse.com, willerz@gmail.com, abhi220204@gmail.com, jpfuentealbabizama@gmail.com, uwe@kuechler.org, jean-louis.colaco@orange.fr, cassiogabrielcontato@gmail.com, cryolitia@uniontech.com, yury.norov@gmail.com, i@rong.moe, tasos@tasossah.com, geert+renesas@glider.be, simon@mungewell.org, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] ALSA: usb-audio: Add support for Pioneer DJ DJM-S11 In-Reply-To: <20260625115340.823184-1-beffa@fbengineering.ch> References: <20260625115340.823184-1-beffa@fbengineering.ch> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Spam-Flag: NO X-Spam-Score: -1.80 X-Spamd-Result: default: False [-1.80 / 50.00]; BAYES_HAM(-3.00)[99.99%]; SUSPICIOUS_RECIPS(1.50)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCPT_COUNT_TWELVE(0.00)[17]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCVD_VIA_SMTP_AUTH(0.00)[]; TAGGED_RCPT(0.00)[renesas]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVRCPT(0.00)[gmail.com,orange.fr]; TO_DN_SOME(0.00)[]; FROM_HAS_DN(0.00)[]; FREEMAIL_CC(0.00)[perex.cz,suse.com,gmail.com,kuechler.org,orange.fr,uniontech.com,rong.moe,tasossah.com,glider.be,mungewell.org,vger.kernel.org]; RCVD_TLS_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:mid] X-Spam-Level: On Thu, 25 Jun 2026 13:46:28 +0200, Federico Beffa wrote: > > The Pioneer DJ DJM-S11, a professional 2-port DJ mixer, is currently not > recognized as an audio interface and therefore not usable on Linux. This > patch enables its full audio functionality. > > Like other mixers in the Pioneer DJ DJM family, the DJM-S11 uses > vendor-specific USB class descriptors (0xff) and requires custom mixer > quirks to expose the hardware's input capture routing and volume > controls. > > Add the USB vendor and product ID (2b73:0037) to quirks-table.h, mapping > the control interface (Interface 0) to trigger the standard mixer quirks, > and establishing the audio formats for the playback and capture streams. > > Control interface 3 is likely related to the touchscreen which is > capable to display waveforms, etc. This functionality is not supported. > > In mixer_quirks.c, add the DSP routing options for the DJM-S11. This > creates the ALSA kcontrols for selecting the capture sources (Phono, > Line, Post-fader, etc.) and initializes the default DSP state during > the device probe. > > Note that the DJM-S11's capture endpoint clock is strictly slaved to > its playback endpoint. Capturing audio (e.g., timecode vinyl DVS input) > physically requires an active playback stream on the output channels > to feed the master word clock back to the capture stage. Userspace > audio servers (such as PipeWire or JACK) should be configured in > full-duplex mode or have automatic node suspension disabled to maintain > the clock line and prevent I/O errors during capture. > > Signed-off-by: Federico Beffa Applied to for-next branch now. Thanks. Takashi