[src/trunk]: src/sys/arch/x68k/dev Audio vchan auto config works again due to...

[nat <nat%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c8647a44fbc1
branches:  trunk
changeset: 355456:c8647a44fbc1
user:      nat <nat%NetBSD.org@localhost>
date:      Sat Jul 29 07:30:39 2017 +0000

description:
Audio vchan auto config works again due to the use of a null_filter.

Tested and confirmed working by isaki@.

diffstat:

 sys/arch/x68k/dev/vs.c |  12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)

diffs (40 lines):

diff -r 0d24e4f24778 -r c8647a44fbc1 sys/arch/x68k/dev/vs.c
--- a/sys/arch/x68k/dev/vs.c    Sat Jul 29 07:19:47 2017 +0000
+++ b/sys/arch/x68k/dev/vs.c    Sat Jul 29 07:30:39 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vs.c,v 1.39 2017/07/09 12:49:26 isaki Exp $    */
+/*     $NetBSD: vs.c,v 1.40 2017/07/29 07:30:39 nat Exp $      */
 
 /*
  * Copyright (c) 2001 Tetsuya Isaki. All rights reserved.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vs.c,v 1.39 2017/07/09 12:49:26 isaki Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vs.c,v 1.40 2017/07/29 07:30:39 nat Exp $");
 
 #include "audio.h"
 #include "vs.h"
@@ -160,6 +160,8 @@
 
 #define NUM_RATE       (sizeof(vs_l2r)/sizeof(vs_l2r[0]))
 
+extern stream_filter_factory_t null_filter;
+
 static int
 vs_match(device_t parent, cfdata_t cf, void *aux)
 {
@@ -405,6 +407,12 @@
        pfil->prepend(pfil, msm6258_slinear16_to_adpcm, play);
        rfil->prepend(rfil, msm6258_adpcm_to_slinear16, play);
 
+       play->validbits = 16;
+       play->precision = 16;
+
+       pfil->prepend(pfil, null_filter, play);
+       rfil->prepend(rfil, null_filter, play);
+
        sc->sc_current.prate = rate;
        sc->sc_current.rrate = rate;