From 5f503ee9e270f8251ba9024bafa8d698050066cb Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Tue, 18 Nov 2014 16:11:37 +0100 Subject: 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 --- sound/usb/mixer_quirks.c | 84 ++++++++++++++++++++++++++---------------------- 1 file changed, 46 insertions(+), 38 deletions(-) (limited to 'sound/usb') diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c index 41cacf889c98..f2b1c0d8ccd1 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, -- cgit v1.2.1