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ALSA: hda/hdmi: Add module option to disable audio component binding

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commit b392350ec3 upstream.

As the recent regression showed, we want sometimes to turn off the
audio component binding just for debugging.  This patch adds the
module option to control it easily without compilation.

Fixes: ade49db337 ("ALSA: hda/hdmi - Allow audio component for AMD/ATI and Nvidia HDMI")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207223
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20200415162523.27499-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Takashi Iwai
2020-04-15 18:25:23 +02:00
committed by Greg Kroah-Hartman
parent 1e1f9d3628
commit dbb11f1d6d
1 changed files with 9 additions and 0 deletions
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9
sound/pci/hda/patch_hdmi.c
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@@ -57,6 +57,10 @@ MODULE_PARM_DESC(static_hdmi_pcm, "Don't restrict PCM parameters per ELD info");
#define is_cherryview(codec) ((codec)->core.vendor_id == 0x80862883)
#define is_valleyview_plus(codec) (is_valleyview(codec) || is_cherryview(codec))
static bool enable_acomp = true;
module_param(enable_acomp, bool, 0444);
MODULE_PARM_DESC(enable_acomp, "Enable audio component binding (default=yes)");
struct hdmi_spec_per_cvt {
hda_nid_t cvt_nid;
int assigned;
@@ -2550,6 +2554,11 @@ static void generic_acomp_init(struct hda_codec *codec,
{
struct hdmi_spec *spec = codec->spec;
if (!enable_acomp) {
codec_info(codec, "audio component disabled by module option\n");
return;
}
spec->port2pin = port2pin;
setup_drm_audio_ops(codec, ops);
if (!snd_hdac_acomp_init(&codec->bus->core, &spec->drm_audio_ops,