diff options
Diffstat (limited to 'sound/pci/hda/hda_local.h')
| -rw-r--r-- | sound/pci/hda/hda_local.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index 3bfcf42ff6c..4e77f474729 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -23,6 +23,15 @@ #ifndef __SOUND_HDA_LOCAL_H #define __SOUND_HDA_LOCAL_H +/* We abuse kcontrol_new.subdev field to pass the NID corresponding to + * the given new control. If id.subdev has a bit flag HDA_SUBDEV_NID_FLAG, + * snd_hda_ctl_add() takes the lower-bit subdev value as a valid NID. + * + * Note that the subdevice field is cleared again before the real registration + * in snd_hda_ctl_add(), so that this value won't appear in the outside. + */ +#define HDA_SUBDEV_NID_FLAG (1U << 31) + /* * for mixer controls */ @@ -33,7 +42,7 @@ /* mono volume with index (index=0,1,...) (channel=1,2) */ #define HDA_CODEC_VOLUME_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \ - .subdevice = (1<<31)|(nid), \ + .subdevice = HDA_SUBDEV_NID_FLAG | (nid), \ .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | \ SNDRV_CTL_ELEM_ACCESS_TLV_READ | \ SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK, \ @@ -54,7 +63,7 @@ /* mono mute switch with index (index=0,1,...) (channel=1,2) */ #define HDA_CODEC_MUTE_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \ - .subdevice = (1<<31)|(nid), \ + .subdevice = HDA_SUBDEV_NID_FLAG | (nid), \ .info = snd_hda_mixer_amp_switch_info, \ .get = snd_hda_mixer_amp_switch_get, \ .put = snd_hda_mixer_amp_switch_put, \ @@ -71,7 +80,7 @@ /* special beep mono mute switch with index (index=0,1,...) (channel=1,2) */ #define HDA_CODEC_MUTE_BEEP_MONO_IDX(xname, xcidx, nid, channel, xindex, direction) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xcidx, \ - .subdevice = (1<<31)|(nid), \ + .subdevice = HDA_SUBDEV_NID_FLAG | (nid), \ .info = snd_hda_mixer_amp_switch_info, \ .get = snd_hda_mixer_amp_switch_get, \ .put = snd_hda_mixer_amp_switch_put_beep, \ |