diff options
| author | Clemens Ladisch <clemens@ladisch.de> | 2005-07-29 15:32:58 +0200 |
|---|---|---|
| committer | Jaroslav Kysela <perex@suse.cz> | 2005-08-30 08:43:22 +0200 |
| commit | 67ed4161f60d76b3b27efc085b36357a6a90768c (patch) | |
| tree | d69bd70f968a1e439d8b9a43ff8d4b60eb3c8bdf /Documentation/sound | |
| parent | 42dfd0adab83c95890e562623264999914771763 (diff) | |
[ALSA] sound - fix .iface field of mixer control elements
Documentation,CS46xx driver,EMU10K1/EMU10K2 driver,AD1848 driver
SB16/AWE driver,CMIPCI driver,ENS1370/1+ driver,RME32 driver
RME96 driver,ICE1712 driver,ICE1724 driver,KORG1212 driver
RME HDSP driver,RME9652 driver
This patch changes .iface to SNDRV_CTL_ELEM_IFACE_MIXER whre _PCM or
_HWDEP was used in controls that are not associated with a specific PCM
(sub)stream or hwdep device, and changes some controls that got
inconsitent .iface values due to copy+paste errors. Furthermore, it
makes sure that all control that do use _PCM or _HWDEP use the correct
number in the .device field.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Diffstat (limited to 'Documentation/sound')
| -rw-r--r-- | Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl index db0b7d2dc477..0475478c2484 100644 --- a/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl +++ b/Documentation/sound/alsa/DocBook/writing-an-alsa-driver.tmpl @@ -3422,10 +3422,17 @@ struct _snd_pcm_runtime { <para> The <structfield>iface</structfield> field specifies the type of - the control, - <constant>SNDRV_CTL_ELEM_IFACE_XXX</constant>. There are - <constant>MIXER</constant>, <constant>PCM</constant>, - <constant>CARD</constant>, etc. + the control, <constant>SNDRV_CTL_ELEM_IFACE_XXX</constant>, which + is usually <constant>MIXER</constant>. + Use <constant>CARD</constant> for global controls that are not + logically part of the mixer. + If the control is closely associated with some specific device on + the sound card, use <constant>HWDEP</constant>, + <constant>PCM</constant>, <constant>RAWMIDI</constant>, + <constant>TIMER</constant>, or <constant>SEQUENCER</constant>, and + specify the device number with the + <structfield>device</structfield> and + <structfield>subdevice</structfield> fields. </para> <para> |