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authorDaniel Mack <zonque@gmail.com>2011-05-25 09:09:01 +0200
committerTakashi Iwai <tiwai@suse.de>2011-05-25 09:36:20 +0200
commit9e38658f703732cb69936553cef4bdb4e5294f3f (patch)
tree8db752c56b8c5677c5ea215bf6b249f17844e4e6 /sound/usb
parentef9d59708949b2012b1b723a1eaec82981c40013 (diff)
downloadlinux-linaro-precise-9e38658f703732cb69936553cef4bdb4e5294f3f.tar.gz
ALSA: usb-audio: export snd_usb_feature_unit_ctl
In order to allow quirks functions to hook up to the standard feature unit op tables, this patch exports a pointer to the struct that is used internally. That way, all the code handling the control can be kept private, and external code can reference the symbol to re-use it. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb')
-rw-r--r--sound/usb/card.c1
-rw-r--r--sound/usb/mixer.c13
-rw-r--r--sound/usb/mixer.h11
-rw-r--r--sound/usb/quirks.c1
4 files changed, 15 insertions, 11 deletions
diff --git a/sound/usb/card.c b/sound/usb/card.c
index 84a5ce70a2b..220c6167dd8 100644
--- a/sound/usb/card.c
+++ b/sound/usb/card.c
@@ -48,6 +48,7 @@
#include <linux/usb/audio.h>
#include <linux/usb/audio-v2.h>
+#include <sound/control.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/pcm.h>
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index ba19bfdfdc9..c22fa76e363 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -86,16 +86,6 @@ struct mixer_build {
const struct usbmix_selector_map *selector_map;
};
-enum {
- USB_MIXER_BOOLEAN,
- USB_MIXER_INV_BOOLEAN,
- USB_MIXER_S8,
- USB_MIXER_U8,
- USB_MIXER_S16,
- USB_MIXER_U16,
-};
-
-
/*E-mu 0202/0404/0204 eXtension Unit(XU) control*/
enum {
USB_XU_CLOCK_RATE = 0xe301,
@@ -985,6 +975,9 @@ static struct snd_kcontrol_new usb_feature_unit_ctl_ro = {
.put = NULL,
};
+/* This symbol is exported in order to allow the mixer quirks to
+ * hook up to the standard feature unit control mechanism */
+struct snd_kcontrol_new *snd_usb_feature_unit_ctl = &usb_feature_unit_ctl;
/*
* build a feature control
diff --git a/sound/usb/mixer.h b/sound/usb/mixer.h
index 459551ac53a..ae1a14dcfe8 100644
--- a/sound/usb/mixer.h
+++ b/sound/usb/mixer.h
@@ -24,7 +24,16 @@ struct usb_mixer_interface {
u8 xonar_u1_status;
};
-#define MAX_CHANNELS 10 /* max logical channels */
+#define MAX_CHANNELS 16 /* max logical channels */
+
+enum {
+ USB_MIXER_BOOLEAN,
+ USB_MIXER_INV_BOOLEAN,
+ USB_MIXER_S8,
+ USB_MIXER_U8,
+ USB_MIXER_S16,
+ USB_MIXER_U16,
+};
struct usb_mixer_elem_info {
struct usb_mixer_interface *mixer;
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index bd13d725724..2546dc808e4 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -19,6 +19,7 @@
#include <linux/usb.h>
#include <linux/usb/audio.h>
+#include <sound/control.h>
#include <sound/core.h>
#include <sound/info.h>
#include <sound/pcm.h>