[PATCH] ALSA: usb-audio: Disable autosuspend for Lenovo ThinkStation P620

[Kai-Heng Feng]

If USB autosuspend is enabled, both front and rear panel can no longer
detect jack insertion.

Enable USB remote wakeup, i.e. needs_remote_wakeup = 1, doesn't help
either.

So disable USB autosuspend to prevent missing jack detection event.

Signed-off-by: Kai-Heng Feng <kai.heng.f...@canonical.com>
---
 sound/usb/quirks-table.h | 18 ++++++++++++++----
 sound/usb/quirks.c       | 10 ++++++++++
 sound/usb/usbaudio.h     |  1 +
 3 files changed, 25 insertions(+), 4 deletions(-)

diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h
index f4fb002e3ef4..416de71c6895 100644
--- a/sound/usb/quirks-table.h
+++ b/sound/usb/quirks-table.h
@@ -2827,14 +2827,24 @@ YAMAHA_DEVICE(0x7010, "UB99"),
 /* Lenovo ThinkStation P620 Rear Line-in, Line-out and Microphone */
 {
        USB_DEVICE(0x17aa, 0x1046),
-       QUIRK_DEVICE_PROFILE("Lenovo", "ThinkStation P620 Rear",
-                            "Lenovo-ThinkStation-P620-Rear"),
+       .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+               .vendor_name = "Lenovo",
+               .product_name = "ThinkStation P620 Rear",
+               .profile_name = "Lenovo-ThinkStation-P620-Rear",
+               .ifnum = QUIRK_ANY_INTERFACE,
+               .type = QUIRK_SETUP_DISABLE_AUTOSUSPEND
+       }
 },
 /* Lenovo ThinkStation P620 Internal Speaker + Front Headset */
 {
        USB_DEVICE(0x17aa, 0x104d),
-       QUIRK_DEVICE_PROFILE("Lenovo", "ThinkStation P620 Main",
-                            "Lenovo-ThinkStation-P620-Main"),
+       .driver_info = (unsigned long) & (const struct snd_usb_audio_quirk) {
+               .vendor_name = "Lenovo",
+               .product_name = "ThinkStation P620 Main",
+               .profile_name = "Lenovo-ThinkStation-P620-Main",
+               .ifnum = QUIRK_ANY_INTERFACE,
+               .type = QUIRK_SETUP_DISABLE_AUTOSUSPEND
+       }
 },
 
 /* Native Instruments MK2 series */
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index abf99b814a0f..b800fd92106c 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -518,6 +518,15 @@ static int setup_fmt_after_resume_quirk(struct 
snd_usb_audio *chip,
        return 1;       /* Continue with creating streams and mixer */
 }
 
+static int setup_disable_autosuspend(struct snd_usb_audio *chip,
+                                      struct usb_interface *iface,
+                                      struct usb_driver *driver,
+                                      const struct snd_usb_audio_quirk *quirk)
+{
+       driver->supports_autosuspend = 0;
+       return 1;       /* Continue with creating streams and mixer */
+}
+
 /*
  * audio-interface quirks
  *
@@ -557,6 +566,7 @@ int snd_usb_create_quirk(struct snd_usb_audio *chip,
                [QUIRK_AUDIO_ALIGN_TRANSFER] = create_align_transfer_quirk,
                [QUIRK_AUDIO_STANDARD_MIXER] = create_standard_mixer_quirk,
                [QUIRK_SETUP_FMT_AFTER_RESUME] = setup_fmt_after_resume_quirk,
+               [QUIRK_SETUP_DISABLE_AUTOSUSPEND] = setup_disable_autosuspend,
        };
 
        if (quirk->type < QUIRK_TYPE_COUNT) {
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h
index b91c4c0807ec..6839915a0128 100644
--- a/sound/usb/usbaudio.h
+++ b/sound/usb/usbaudio.h
@@ -102,6 +102,7 @@ enum quirk_type {
        QUIRK_AUDIO_ALIGN_TRANSFER,
        QUIRK_AUDIO_STANDARD_MIXER,
        QUIRK_SETUP_FMT_AFTER_RESUME,
+       QUIRK_SETUP_DISABLE_AUTOSUSPEND,
 
        QUIRK_TYPE_COUNT
 };
-- 
2.17.1