diff options
| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2021-03-25 19:59:12 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-03-26 11:09:58 +0300 |
| commit | 69644fca2716699cc6896aff51d37b1e886c94d2 (patch) | |
| tree | ba433590b55338fffada329b664c8c4c34a8f4ae /sound/usb | |
| parent | e839fbed26e8b8713803b8ac73da92fd2b0c7594 (diff) | |
| download | linux-69644fca2716699cc6896aff51d37b1e886c94d2.tar.xz | |
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')
| -rw-r--r-- | sound/usb/mixer.c | 34 |
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; } |