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authorKai-Heng Feng <kai.heng.feng@canonical.com>2021-03-26 00:59:12 +0800
committerTakashi Iwai <tiwai@suse.de>2021-03-26 09:09:58 +0100
commit69644fca2716699cc6896aff51d37b1e886c94d2 (patch)
treeba433590b55338fffada329b664c8c4c34a8f4ae /sound/usb/mixer.c
parente839fbed26e8b8713803b8ac73da92fd2b0c7594 (diff)
ALSA: usb-audio: Carve out connector value checking into a helper
This is preparation for next patch, no functional change intended. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Link: https://lore.kernel.org/r/20210325165918.22593-1-kai.heng.feng@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/mixer.c')
-rw-r--r--sound/usb/mixer.c34
1 files changed, 25 insertions, 9 deletions
diff --git a/sound/usb/mixer.c b/sound/usb/mixer.c
index b004b2e63a5d..5a2d9a768f70 100644
--- a/sound/usb/mixer.c
+++ b/sound/usb/mixer.c
@@ -1446,13 +1446,11 @@ static int mixer_ctl_master_bool_get(struct snd_kcontrol *kcontrol,
return 0;
}
-/* get the connectors status and report it as boolean type */
-static int mixer_ctl_connector_get(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+static int get_connector_value(struct usb_mixer_elem_info *cval,
+ char *name, int *val)
{
- struct usb_mixer_elem_info *cval = kcontrol->private_data;
struct snd_usb_audio *chip = cval->head.mixer->chip;
- int idx = 0, validx, ret, val;
+ int idx = 0, validx, ret;
validx = cval->control << 8 | 0;
@@ -1467,21 +1465,24 @@ static int mixer_ctl_connector_get(struct snd_kcontrol *kcontrol,
ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), UAC2_CS_CUR,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
validx, idx, &uac2_conn, sizeof(uac2_conn));
- val = !!uac2_conn.bNrChannels;
+ if (val)
+ *val = !!uac2_conn.bNrChannels;
} else { /* UAC_VERSION_3 */
struct uac3_insertion_ctl_blk uac3_conn;
ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), UAC2_CS_CUR,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
validx, idx, &uac3_conn, sizeof(uac3_conn));
- val = !!uac3_conn.bmConInserted;
+ if (val)
+ *val = !!uac3_conn.bmConInserted;
}
snd_usb_unlock_shutdown(chip);
if (ret < 0) {
- if (strstr(kcontrol->id.name, "Speaker")) {
- ucontrol->value.integer.value[0] = 1;
+ if (name && strstr(name, "Speaker")) {
+ if (val)
+ *val = 1;
return 0;
}
error:
@@ -1491,6 +1492,21 @@ error:
return filter_error(cval, ret);
}
+ return ret;
+}
+
+/* get the connectors status and report it as boolean type */
+static int mixer_ctl_connector_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_info *cval = kcontrol->private_data;
+ int ret, val;
+
+ ret = get_connector_value(cval, kcontrol->id.name, &val);
+
+ if (ret < 0)
+ return ret;
+
ucontrol->value.integer.value[0] = val;
return 0;
}