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| author | Takashi Iwai <tiwai@suse.de> | 2007-07-27 19:02:40 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@perex.cz> | 2007-10-16 15:58:11 +0200 |
| commit | 532d5381793f3c824f8ff68d7067fab8c76bb811 (patch) | |
| tree | 41a27e08a905c28576167b711ccc2b06ea234a9f /sound/pci/hda/hda_local.h | |
| parent | [ALSA] hda-intel - Add hwdep interface (diff) | |
| download | linux-532d5381793f3c824f8ff68d7067fab8c76bb811.tar.xz linux-532d5381793f3c824f8ff68d7067fab8c76bb811.zip | |
[ALSA] hda-codec - Add a generic bind-control helper
Added callbacks for a generic bind-control of mixer elements.
This can be used for creating a mixer element controlling multiple
widgets at the same time. Two macros, HDA_BIND_VOL() and HDA_BIND_SW(),
are introduced for creating bind-volume and bind-switch, respectively.
It taks the mixer element name and struct hda_bind_ctls pointer, which
contains the real control callbacks in ops field and long array for
private_value of each bound widget.
All widgets have to be the same type (i.e. the same amp capability).
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/pci/hda/hda_local.h')
| -rw-r--r-- | sound/pci/hda/hda_local.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_local.h b/sound/pci/hda/hda_local.h index 12428a67eb2a..fafcffe6fc79 100644 --- a/sound/pci/hda/hda_local.h +++ b/sound/pci/hda/hda_local.h @@ -102,6 +102,53 @@ int snd_hda_mixer_bind_switch_get(struct snd_kcontrol *kcontrol, int snd_hda_mixer_bind_switch_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol); +/* more generic bound controls */ +struct hda_ctl_ops { + snd_kcontrol_info_t *info; + snd_kcontrol_get_t *get; + snd_kcontrol_put_t *put; + snd_kcontrol_tlv_rw_t *tlv; +}; + +extern struct hda_ctl_ops snd_hda_bind_vol; /* for bind-volume with TLV */ +extern struct hda_ctl_ops snd_hda_bind_sw; /* for bind-switch */ + +struct hda_bind_ctls { + struct hda_ctl_ops *ops; + long values[]; +}; + +int snd_hda_mixer_bind_ctls_info(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_info *uinfo); +int snd_hda_mixer_bind_ctls_get(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol); +int snd_hda_mixer_bind_ctls_put(struct snd_kcontrol *kcontrol, + struct snd_ctl_elem_value *ucontrol); +int snd_hda_mixer_bind_tlv(struct snd_kcontrol *kcontrol, int op_flag, + unsigned int size, unsigned int __user *tlv); + +#define HDA_BIND_VOL(xname, bindrec) \ + { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \ + .name = xname, \ + .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |\ + SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ + SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK,\ + .info = snd_hda_mixer_bind_ctls_info,\ + .get = snd_hda_mixer_bind_ctls_get,\ + .put = snd_hda_mixer_bind_ctls_put,\ + .tlv = { .c = snd_hda_mixer_bind_tlv },\ + .private_value = (long) (bindrec) } +#define HDA_BIND_SW(xname, bindrec) \ + { .iface = SNDRV_CTL_ELEM_IFACE_MIXER,\ + .name = xname, \ + .info = snd_hda_mixer_bind_ctls_info,\ + .get = snd_hda_mixer_bind_ctls_get,\ + .put = snd_hda_mixer_bind_ctls_put,\ + .private_value = (long) (bindrec) } + +/* + * SPDIF I/O + */ int snd_hda_create_spdif_out_ctls(struct hda_codec *codec, hda_nid_t nid); int snd_hda_create_spdif_in_ctls(struct hda_codec *codec, hda_nid_t nid); |