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authorTakashi Iwai <tiwai@suse.de>2007-07-27 18:58:06 +0200
committerJaroslav Kysela <perex@perex.cz>2007-10-16 15:58:10 +0200
commit2807314d467e7dd929c42050031aabbd28e78f0b (patch)
treed4d05f61ef8cc1115ae73af900b8012392321caa /include/sound/hda_hwdep.h
parentef5fa1a49fc3b5fe8e734f25fa61bc73ccba344e (diff)
downloadlinux-2807314d467e7dd929c42050031aabbd28e78f0b.tar.bz2
[ALSA] hda-intel - Add hwdep interface
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 <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'include/sound/hda_hwdep.h')
-rw-r--r--include/sound/hda_hwdep.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/include/sound/hda_hwdep.h b/include/sound/hda_hwdep.h
new file mode 100644
index 000000000000..1c0034e87f22
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+++ b/include/sound/hda_hwdep.h
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+/*
+ * 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