From 67ed4161f60d76b3b27efc085b36357a6a90768c Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Fri, 29 Jul 2005 15:32:58 +0200 Subject: [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 --- .../sound/alsa/DocBook/writing-an-alsa-driver.tmpl | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'Documentation/sound') 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 { The iface field specifies the type of - the control, - SNDRV_CTL_ELEM_IFACE_XXX. There are - MIXER, PCM, - CARD, etc. + the control, SNDRV_CTL_ELEM_IFACE_XXX, which + is usually MIXER. + Use CARD 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 HWDEP, + PCM, RAWMIDI, + TIMER, or SEQUENCER, and + specify the device number with the + device and + subdevice fields. -- cgit v1.2.2