[PATCH] ALSA: hda: Poll jack events for LS7A HD-Audio

[Huacai Chen]

LS7A HD-Audio disable interrupts and use polling mode due to hardware
drawbacks. As a result, unsolicited jack events are also unusable. If
we want to support headphone hotplug, we need to also poll jack events.

Here we use 1500ms as the poll interval if no module parameter specify
it.

Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
---
 sound/pci/hda/hda_intel.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index b4540c5cd2a6..5060d5428caf 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1867,6 +1867,8 @@ static int azx_first_init(struct azx *chip)
 		bus->polling_mode = 1;
 		bus->not_use_interrupts = 1;
 		bus->access_sdnctl_in_dword = 1;
+		if (!chip->jackpoll_interval)
+			chip->jackpoll_interval = msecs_to_jiffies(1500);
 	}
 
 	err = pcim_iomap_regions(pci, 1 << 0, "ICH HD audio");
-- 
2.43.5