Re: [PATCH v3 2/9] ALSA: hda/i915: Allow override of gpu binding.

[Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>]

On 8/7/23 04:00, Maarten Lankhorst wrote:
> Selecting CONFIG_DRM selects CONFIG_VIDEO_NOMODESET, which exports
> video_firmware_drivers_only(). This can be used as a first
> approximation on whether i915 will be available. It's safe to use as
> this is only built when CONFIG_SND_HDA_I915 is selected by CONFIG_I915.
> 
> It's not completely fool proof, as you can boot with "nomodeset
> i915.modeset=1" to make i915 load regardless, or use
> "i915.force_probe=!*" to never load i915, but the common case of
> booting with nomodeset to disable all GPU drivers this will work as
> intended.
> 
> Because of this, we add an extra module parameter,
> snd_hda_core.gpu_bind that can be used to signal users intent.
> -1 follows nomodeset, 0 disables binding, 1 forces wait/-EPROBE_DEFER
> on binding.
> 
> Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Reviewed-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
> Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>

Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>