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authorTakashi Iwai <tiwai@suse.de>2014-11-18 16:11:37 +0100
committerTakashi Iwai <tiwai@suse.de>2014-11-21 11:57:55 +0100
commit5f503ee9e270f8251ba9024bafa8d698050066cb (patch)
treed78f2ddf1a969f505396bcaac66ef64e80cb6ce4 /sound/usb/mixer_quirks.c
parent9cf3689bfe0784b6f6afb301bece95d3fc3eeb64 (diff)
downloadop-kernel-dev-5f503ee9e270f8251ba9024bafa8d698050066cb.zip
op-kernel-dev-5f503ee9e270f8251ba9024bafa8d698050066cb.tar.gz
ALSA: usb-audio: Add Emu0204 channel switch resume support
Similar as the previous fix, this adds the proper resume support to Emu0202 "Front Jack Channels" enum mixer element. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/mixer_quirks.c')
-rw-r--r--sound/usb/mixer_quirks.c84
1 files changed, 46 insertions, 38 deletions
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 41cacf8..f2b1c0d 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -473,63 +473,71 @@ static int snd_emu0204_ch_switch_get(struct snd_kcontrol *kcontrol,
return 0;
}
-static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol,
- struct snd_ctl_elem_value *ucontrol)
+static int snd_emu0204_ch_switch_update(struct usb_mixer_interface *mixer,
+ int value)
{
- struct usb_mixer_interface *mixer = snd_kcontrol_chip(kcontrol);
- unsigned int value = ucontrol->value.enumerated.item[0];
- int err, changed;
+ struct snd_usb_audio *chip = mixer->chip;
+ int err;
unsigned char buf[2];
- if (value > 1)
- return -EINVAL;
-
- buf[0] = 0x01;
- buf[1] = value ? 0x02 : 0x01;
-
- changed = value != kcontrol->private_value;
- down_read(&mixer->chip->shutdown_rwsem);
+ down_read(&chip->shutdown_rwsem);
if (mixer->chip->shutdown) {
err = -ENODEV;
goto out;
}
- err = snd_usb_ctl_msg(mixer->chip->dev,
- usb_sndctrlpipe(mixer->chip->dev, 0), UAC_SET_CUR,
+
+ buf[0] = 0x01;
+ buf[1] = value ? 0x02 : 0x01;
+ err = snd_usb_ctl_msg(chip->dev,
+ usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
0x0400, 0x0e00, buf, 2);
out:
- up_read(&mixer->chip->shutdown_rwsem);
- if (err < 0)
- return err;
+ up_read(&chip->shutdown_rwsem);
+ return err;
+}
+
+static int snd_emu0204_ch_switch_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct usb_mixer_elem_list *list = snd_kcontrol_chip(kcontrol);
+ struct usb_mixer_interface *mixer = list->mixer;
+ unsigned int value = ucontrol->value.enumerated.item[0];
+ int err;
+
+ if (value > 1)
+ return -EINVAL;
+
+ if (value == kcontrol->private_value)
+ return 0;
+
kcontrol->private_value = value;
- return changed;
+ err = snd_emu0204_ch_switch_update(mixer, value);
+ return err < 0 ? err : 1;
}
+static int snd_emu0204_ch_switch_resume(struct usb_mixer_elem_list *list)
+{
+ return snd_emu0204_ch_switch_update(list->mixer,
+ list->kctl->private_value);
+}
-static struct snd_kcontrol_new snd_emu0204_controls[] = {
- {
- .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
- .name = "Front Jack Channels",
- .info = snd_emu0204_ch_switch_info,
- .get = snd_emu0204_ch_switch_get,
- .put = snd_emu0204_ch_switch_put,
- .private_value = 0,
- },
+static struct snd_kcontrol_new snd_emu0204_control = {
+ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+ .name = "Front Jack Channels",
+ .info = snd_emu0204_ch_switch_info,
+ .get = snd_emu0204_ch_switch_get,
+ .put = snd_emu0204_ch_switch_put,
+ .private_value = 0,
};
static int snd_emu0204_controls_create(struct usb_mixer_interface *mixer)
{
- int i, err;
-
- for (i = 0; i < ARRAY_SIZE(snd_emu0204_controls); ++i) {
- err = snd_ctl_add(mixer->chip->card,
- snd_ctl_new1(&snd_emu0204_controls[i], mixer));
- if (err < 0)
- return err;
- }
-
- return 0;
+ return add_single_ctl_with_resume(mixer, 0,
+ snd_emu0204_ch_switch_resume,
+ &snd_emu0204_control, NULL);
}
+
/* ASUS Xonar U1 / U3 controls */
static int snd_xonar_u1_switch_get(struct snd_kcontrol *kcontrol,
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