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| author | Jaroslav Kysela <perex@suse.cz> | 2006-07-05 17:34:51 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2006-09-23 10:37:26 +0200 |
| commit | 8aa9b586e42099817163aba01d925c2660c4dbbe (patch) | |
| tree | b70172eafcb672074fda1858c7a9c5779a1132f8 /include/sound/control.h | |
| parent | 6bbe13ecbbce4415a5a7959b3bc35b18313025e0 (diff) | |
| download | linux-8aa9b586e42099817163aba01d925c2660c4dbbe.tar.gz | |
[ALSA] Control API - more robust TLV implementation
- added callback option - added READ/WRITE/COMMAND flags to access member - added WRITE/COMMAND ioctls - added SNDRV_CTL_EVENT_MASK_TLV for TLV change notifications - added TLV support to ELEM_ADD ioctl Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'include/sound/control.h')
| -rw-r--r-- | include/sound/control.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/include/sound/control.h b/include/sound/control.h index a93a58d0e688..e3905c5a0950 100644 --- a/include/sound/control.h +++ b/include/sound/control.h @@ -30,6 +30,11 @@ struct snd_kcontrol; typedef int (snd_kcontrol_info_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_info * uinfo); typedef int (snd_kcontrol_get_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol); typedef int (snd_kcontrol_put_t) (struct snd_kcontrol * kcontrol, struct snd_ctl_elem_value * ucontrol); +typedef int (snd_kcontrol_tlv_rw_t)(struct snd_kcontrol *kcontrol, + int op_flag, /* 0=read,1=write,-1=command */ + unsigned int size, + unsigned int __user *tlv); + struct snd_kcontrol_new { snd_ctl_elem_iface_t iface; /* interface identifier */ @@ -42,7 +47,10 @@ struct snd_kcontrol_new { snd_kcontrol_info_t *info; snd_kcontrol_get_t *get; snd_kcontrol_put_t *put; - unsigned int *tlv; + union { + snd_kcontrol_tlv_rw_t *c; + unsigned int *p; + } tlv; unsigned long private_value; }; @@ -59,7 +67,11 @@ struct snd_kcontrol { snd_kcontrol_info_t *info; snd_kcontrol_get_t *get; snd_kcontrol_put_t *put; - unsigned int *tlv; + snd_kcontrol_tlv_rw_t *tlv_rw; + union { + snd_kcontrol_tlv_rw_t *c; + unsigned int *p; + } tlv; unsigned long private_value; void *private_data; void (*private_free)(struct snd_kcontrol *kcontrol); |