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ALSA: control: add support for ENUMERATED user space controls

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Handling of user control elements was implemented for all types except
ENUMERATED.  This type will be needed for the device-specific mixers of
upcoming FireWire drivers.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Clemens Ladisch
2011-10-07 22:38:59 +02:00
committed by Takashi Iwai
parent f92766bc89
commit 8d448162bd
3 changed files with 83 additions and 5 deletions
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sound/core/control_compat.c
+4
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@@ -83,6 +83,8 @@ struct snd_ctl_elem_info32 {
u32 items;
u32 item;
char name[64];
u64 names_ptr;
u32 names_length;
} enumerated;
unsigned char reserved[128];
} value;
@@ -372,6 +374,8 @@ static int snd_ctl_elem_add_compat(struct snd_ctl_file *file,
&data32->value.enumerated,
sizeof(data->value.enumerated)))
goto error;
data->value.enumerated.names_ptr =
(uintptr_t)compat_ptr(data->value.enumerated.names_ptr);
break;
default:
break;