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[ALSA] hda-intel - Add hwdep interface

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Added a hwdep interface for each codec (enabled per kconfig).
This interface can be used for reading/writing HD-audio verbs
and other purposes as future extensions.

Signed-off-by: Takashi Iwai <[email protected]>
Signed-off-by: Jaroslav Kysela <[email protected]>
This commit is contained in:
Takashi Iwai 2007-07-27 18:58:06 +02:00 • committed by Jaroslav Kysela
commit 2807314d46
8 changed files with 192 additions and 5 deletions
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1
include/sound/asound.h
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@ -92,6 +92,7 @@ enum {
SNDRV_HWDEP_IFACE_USX2Y_PCM, /* Tascam US122, US224 & US428 rawusb pcm */
SNDRV_HWDEP_IFACE_PCXHR, /* Digigram PCXHR */
SNDRV_HWDEP_IFACE_SB_RC, /* SB Extigy/Audigy2NX remote control */
SNDRV_HWDEP_IFACE_HDA, /* HD-audio */
/* Don't forget to change the following: */
SNDRV_HWDEP_IFACE_LAST = SNDRV_HWDEP_IFACE_SB_RC

44
include/sound/hda_hwdep.h Normal file
View file

@ -0,0 +1,44 @@
/*
* HWDEP Interface for HD-audio codec
*
* Copyright (c) 2007 Takashi Iwai <tiwai@suse.de>
*
* This driver is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This driver is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __SOUND_HDA_HWDEP_H
#define __SOUND_HDA_HWDEP_H
#define HDA_HWDEP_VERSION ((1 << 16) | (0 << 8) | (0 << 0)) /* 1.0.0 */
/* verb */
#define HDA_REG_NID_SHIFT 24
#define HDA_REG_VERB_SHIFT 8
#define HDA_REG_VAL_SHIFT 0
#define HDA_VERB(nid,verb,param) ((nid)<<24 | (verb)<<8 | (param))
struct hda_verb_ioctl {
u32 verb; /* HDA_VERB() */
u32 res; /* response */
};
/*
* ioctls
*/
#define HDA_IOCTL_PVERSION _IOR('H', 0x10, int)
#define HDA_IOCTL_VERB_WRITE _IOWR('H', 0x11, struct hda_verb_ioctl)
#define HDA_IOCTL_GET_WCAP _IOWR('H', 0x12, struct hda_verb_ioctl)
#endif