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authorTakashi Iwai <tiwai@suse.de>2018-04-27 14:23:37 +0200
committerTakashi Iwai <tiwai@suse.de>2018-05-02 16:02:32 +0200
commit964af639ad699404cbe36d0c1fc85970700e6107 (patch)
treeab5b7731f63449b7892bcd476f5174b80c5dd314 /sound/usb/mixer_quirks.c
parent9c367c01d3d5060a2bcb2ca76a447bdb42c83c91 (diff)
ALSA: usb-audio: Initialize Dell Dock playback volumes
In the early commit adcdd0d5a1cb ("ALSA: usb-audio: Skip volume controls triggers hangup on Dell USB Dock"), we add the mixer quirks for Dell dock to skip two mixer FU's for playback. This supposed that the device has always the proper initial volume, but it doesn't seem always correct. This patch adds the explicit initialization of the volumes to the fixed 0dB at the device probe time. Also, such a fixup is needed after the resume, so a new function is hooked to the resume callback as well. Bugzilla: http://bugzilla.suse.com/show_bug.cgi?id=1089467 Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/mixer_quirks.c')
-rw-r--r--sound/usb/mixer_quirks.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/sound/usb/mixer_quirks.c b/sound/usb/mixer_quirks.c
index 56537a156580..4377374affd3 100644
--- a/sound/usb/mixer_quirks.c
+++ b/sound/usb/mixer_quirks.c
@@ -1799,6 +1799,26 @@ static int snd_soundblaster_e1_switch_create(struct usb_mixer_interface *mixer)
NULL);
}
+static void dell_dock_init_vol(struct snd_usb_audio *chip, int ch, int id)
+{
+ u16 buf = 0;
+
+ snd_usb_ctl_msg(chip->dev, usb_sndctrlpipe(chip->dev, 0), UAC_SET_CUR,
+ USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_OUT,
+ ch, snd_usb_ctrl_intf(chip) | (id << 8),
+ &buf, 2);
+}
+
+static int dell_dock_mixer_init(struct usb_mixer_interface *mixer)
+{
+ /* fix to 0dB playback volumes */
+ dell_dock_init_vol(mixer->chip, 1, 16);
+ dell_dock_init_vol(mixer->chip, 2, 16);
+ dell_dock_init_vol(mixer->chip, 1, 19);
+ dell_dock_init_vol(mixer->chip, 2, 19);
+ return 0;
+}
+
int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
{
int err = 0;
@@ -1884,11 +1904,25 @@ int snd_usb_mixer_apply_create_quirk(struct usb_mixer_interface *mixer)
case USB_ID(0x041e, 0x323b): /* Creative Sound Blaster E1 */
err = snd_soundblaster_e1_switch_create(mixer);
break;
+ case USB_ID(0x0bda, 0x4014): /* Dell WD15 dock */
+ err = dell_dock_mixer_init(mixer);
+ break;
}
return err;
}
+#ifdef CONFIG_PM
+void snd_usb_mixer_resume_quirk(struct usb_mixer_interface *mixer)
+{
+ switch (mixer->chip->usb_id) {
+ case USB_ID(0x0bda, 0x4014): /* Dell WD15 dock */
+ dell_dock_mixer_init(mixer);
+ break;
+ }
+}
+#endif
+
void snd_usb_mixer_rc_memory_change(struct usb_mixer_interface *mixer,
int unitid)
{