Re: [PATCH v4] ALSA: hda/realtek: Enable internal speakers on Razer Blade 16 (2025)

[Takashi Iwai]

On Tue, 23 Jun 2026 21:14:36 +0200,
Christopher Höner wrote:
> 
> On the Razer Blade 16 (2025) (Realtek ALC298, PCI SSID 1a58:300e) the
> internal speakers are driven through an external smart amplifier whose
> crossover, voicing and protection live in a DSP reached over a vendor
> coef mailbox on NID 0x20.  Both speaker pins are fed from one DAC
> through a mixer and the amplifier does the crossover.  The BIOS leaves
> the tweeter pin (NID 0x14) disabled (default config 0x411111f0), so the
> tweeters are not exposed and the amplifier is never programmed for this
> machine under Linux.
> 
> Add a fixup for the machine that:
> 
>   - re-exposes the tweeter pin (NID 0x14) as an internal speaker in the
>     same association (2) as the woofer (NID 0x17), so the controls come
>     out as "Speaker"/"Bass Speaker", with auto-mute on headphone
>     insertion;
> 
>   - pins every output to a fixed converter via preferred_dacs so the
>     routing does not depend on the generic parser's DAC-allocation
>     heuristics: both speaker pins share DAC 0x03 (the only converter
>     that drives the woofer on this machine) through the mixer, while the
>     headphone (NID 0x21) keeps DAC 0x02.  Without a fixed assignment the
>     parser brings up only one speaker pin and leaves the other silent;
> 
>   - wakes the external amp, programs its DSP over the NID-0x20 mailbox
>     at init (boot and resume) and parks it; it is woken again for
>     playback and parked afterwards from a pcm_playback_hook, like the
>     existing Samsung and LG Gram amplifier fixups.
> 
> The DSP sequence was obtained by capturing the Windows driver's HD-audio
> traffic via QEMU/VFIO passthrough of the controller and reducing it to
> the NID-0x20 writes this machine needs; everything else the parser
> rebuilds.  The captured tables are large, so the programming and
> the fixup live in a separate file under
> sound/hda/codecs/helpers/ that the codec driver includes.
> 
> Signed-off-by: Christopher Höner <christopher-hoener@xxxxxx>

Applied to for-next branch now.  Thanks.


Takashi