https://bugs.gentoo.org/652422

--- alsa-lib-1.1.6/src/conf/cards/aliases.alisp
+++ alsa-lib-1.1.6/src/conf/cards/aliases.alisp
@@ -0,0 +1,29 @@
+(setq snd_card_aliases_array
+  (
+    ("YMF724" 		. "YMF744")
+    ("YMF724F"		. "YMF744")
+    ("YMF740"		. "YMF744")
+    ("YMF740C"		. "YMF744")
+    ("YMF754"		. "YMF744")
+    ("CMIPCI"		. "CMI8338")
+    ("CMI8738"		. "CMI8338")
+    ("CMI8738-MC4"	. "CMI8738-MC6")
+    ("E-mu APS"		. "EMU10K1")
+    ("GUS Max"		. "GUS")
+    ("GUS ACE" 		. "GUS")
+    ("GUS Extreme"	. "GUS")
+    ("AMD InterWave"	. "GUS")
+    ("Dynasonic 3-D"	. "GUS")
+    ("InterWave STB"	. "GUS")
+  )
+)
+
+(defun snd_card_alias (cardname)
+  (setq r (assq cardname snd_card_aliases_array))
+  (setq r (if (null r) cardname r))
+  (unsetq r)
+)
+
+(defun snd_card_alias_unset ()
+  (unsetq snd_card_aliases_array snd_card_alias)
+)
--- alsa-lib-1.1.6/src/conf/cards/SI7018/sndoc-mixer.alisp
+++ alsa-lib-1.1.6/src/conf/cards/SI7018/sndoc-mixer.alisp
@@ -0,0 +1,11 @@
+;
+; SiS SI7018 mixer abstract layer
+;
+; Copyright (c) 2003 Jaroslav Kysela <perex@perex.cz>
+; License: GPL v2 (http://www.gnu.org/licenses/gpl.html)
+;
+
+(defun sndoc_mixer_open (hctl pcm)
+  (princ "sndoc_mixer_open: hctl=" hctl " pcm=" pcm "\n")
+  0
+)
--- alsa-lib-1.1.6/src/conf/cards/SI7018/sndop-mixer.alisp
+++ alsa-lib-1.1.6/src/conf/cards/SI7018/sndop-mixer.alisp
@@ -0,0 +1,11 @@
+;
+; SiS SI7018 mixer abstract layer
+;
+; Copyright (c) 2003 Jaroslav Kysela <perex@perex.cz>
+; License: GPL v2 (http://www.gnu.org/licenses/gpl.html)
+;
+
+(defun sndop_mixer_open (hctl pcm)
+  (princ "sndop_mixer_open: hctl=" hctl " pcm=" pcm "\n")
+  0
+)
--- alsa-lib-1.1.6/src/conf/smixer.conf
+++ alsa-lib-1.1.6/src/conf/smixer.conf
@@ -0,0 +1,13 @@
+_full smixer-python.so
+usb {
+	searchl "USB"
+	lib smixer-usb.so
+}
+ac97 {
+	searchl "AC97a:"
+	lib smixer-ac97.so
+}
+hda {
+	searchl "HDA:"
+	lib smixer-hda.so
+}
--- alsa-lib-1.1.6/src/conf/sndo-mixer.alisp
+++ alsa-lib-1.1.6/src/conf/sndo-mixer.alisp
@@ -0,0 +1,115 @@
+;
+; Toplevel configuration for the ALSA Ordinary Mixer Interface
+;
+; Copyright (c) 2003 Jaroslav Kysela <perex@perex.cz>
+; License: GPL v2 (http://www.gnu.org/licenses/gpl.html)
+;
+
+(defun sndo_include (hctl stream)
+  (setq info (Acall "ctl_card_info" (Acall "hctl_ctl" hctl)))
+  (if (= (Aerror info) 0)
+    (progn
+      (setq info (Aresult info))
+      (setq driver (cdr (assq "driver" (unsetq info))))
+      (setq file (concat (path "data") "/alsa/cards/" (snd_card_alias driver) "/sndo" stream "-mixer.alisp"))
+      (setq r (include file))
+      (when (= r -2) (Asyserr "unable to find file " file))
+    )
+    (setq r (Aerror info))
+  )
+  (unsetq info driver file r)
+)
+
+(defun sndo_mixer_open_fcn (hctl stream pcm)
+  (setq fcn (concat "sndo" stream "_mixer_open"))
+  (setq r (if (exfun fcn) (funcall fcn hctl pcm) 0))
+  (when (= r 0)
+    (setq hctls (if hctls (cons hctls (cons hctl)) hctl))
+  )
+  (unsetq fcn r)
+)
+
+(defun sndo_mixer_open_hctl (name stream pcm)
+  (setq hctl (Acall "hctl_open" name nil))
+  (setq r (Aerror hctl))
+  (when (= r 0)
+    (setq hctl (Aresult hctl))
+    (setq r (sndo_include hctl stream))
+    (if (= r 0)
+       (setq r (sndo_mixer_open_fcn hctl stream pcm))
+       (Acall "hctl_close" hctl)
+    )
+  )
+  (unsetq hctl r)
+)
+
+(defun sndo_mixer_open_virtual (name stream pcm)
+  (setq file (concat (path "data") "/alsa/virtual/" name "/sndo" stream "-mixer.alisp"))
+  (setq r (include file))
+  (when (= r -2) (Asyserr "unable to find file " file))
+  (when (= r 0) (setq r (sndo_mixer_open_fcn nil stream pcm)))
+  (unsetq file r)
+)
+
+(defun sndo_mixer_open1 (name stream)
+  (if (compare-strings name 0 2 "hw:" 0 2)
+    (sndo_mixer_open_hctl name stream nil)
+    (sndo_mixer_open_virtual name stream nil)
+  )
+)
+
+(defun sndo_mixer_open (pname cname)
+  (setq r (sndo_mixer_open1 pname "p"))
+  (when (= r 0) (setq r (sndo_mixer_open1 cname "c")))
+  (when (!= r 0) (sndo_mixer_close))
+  (unsetq sndo_mixer_open
+	  sndo_mixer_open_pcm sndo_mixer_open_pcm1
+          sndo_mixer_open_virtual sndo_mixer_open_fcn
+	  sndo_include r)
+)
+
+(defun sndo_mixer_open_pcm1 (pcm stream)
+  (setq info (Acall "pcm_info" pcm))
+  (setq r (Aerror info))
+  (when (= r 0)
+    (setq info (Aresult info))
+    (setq card (cdr (assq "card" info)))
+    (setq r
+      (if (< card 0)
+	(sndo_mixer_open_virtual (Acall "pcm_name" pcm) stream pcm)
+        (sndo_mixer_open_hctl (format "hw:%i" card) stream pcm)
+      )
+    )
+  )
+  (unsetq info card r)
+)
+
+(defun sndo_mixer_open_pcm (ppcm cpcm)
+  (setq r (sndo_mixer_open_pcm1 ppcm "p"))
+  (when (= r 0) (setq r (sndo_mixer_open_pcm1 cpcm "c")))
+  (when (!= r 0) (sndo_mixer_close))
+  (unsetq sndo_mixer_open
+	  sndo_mixer_open_pcm sndo_mixer_open_pcm1
+          sndo_mixer_open_virtual sndo_mixer_open_fcn
+	  sndo_include r)
+)
+
+(defun sndo_mixer_close1 (hctl stream)
+  (when hctl
+    (progn
+      (setq fcn (concat "sndo" stream "_mixer_close"))
+      (when (exfun fcn) (funcall fcn hctl))
+      (unsetq fcn)
+      (Acall "hctl_close" hctl)
+    )
+  )
+)
+
+(defun sndo_mixer_close nil
+  (sndo_mixer_close1 (nth 1 hctls) "c")
+  (sndo_mixer_close1 (nth 0 hctls) "p")
+  (snd_card_alias_unset)
+  (unsetq hctls)
+)
+
+(include (concat (path "data") "/alsa/cards/aliases.alisp"))