use ac97 default parameters for these ac97 based drivers.

this makes the emulation expansion factor 1 by default since there's no
emulation.  previously the factor was 2 because these drivers emulate
8-bit ulaw playback with 16-bit linear encodings.  having a factor
other than 1 by default creates block size and hiwat/lowat issues
with applications that set the block size and hiwat before other
parameters.

ok ratchov@

1 files changed, 9 insertions, 2 deletions

diff --git a/sys/dev/pci/esa.c b/sys/dev/pci/esa.c
index 91f03545bc9..c549cd9d09b 100644
--- a/sys/dev/pci/esa.c
+++ b/sys/dev/pci/esa.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: esa.c,v 1.14 2008/04/21 00:32:43 jakemsr Exp $	*/
+/*	$OpenBSD: esa.c,v 1.15 2008/05/29 02:10:01 jakemsr Exp $	*/
 /* $NetBSD: esa.c,v 1.12 2002/03/24 14:17:35 jmcneill Exp $ */
 
 /*
@@ -109,6 +109,7 @@ void		esa_close(void *);
 int		esa_query_encoding(void *, struct audio_encoding *);
 int		esa_set_params(void *, int, int, struct audio_params *,
 			       struct audio_params *);
+void		esa_get_default_params(void *, int, struct audio_params *);
 int		esa_round_blocksize(void *, int);
 int		esa_commit_settings(void *);
 int		esa_halt_output(void *);
@@ -208,7 +209,7 @@ struct audio_hw_if esa_hw_if = {
 	esa_get_props,
 	esa_trigger_output,
 	esa_trigger_input,
-	NULL
+	esa_get_default_params
 };
 
 struct cfdriver esa_cd = {
@@ -249,6 +250,12 @@ esa_query_encoding(void *hdl, struct audio_encoding *ae)
 	return (0);
 }
 
+void
+esa_get_default_params(void *addr, int mode, struct audio_params *params)
+{
+	ac97_get_default_params(params);
+}
+
 int
 esa_set_params(void *hdl, int setmode, int usemode, struct audio_params *play,
 	       struct audio_params *rec)