From fa863b2d5e62e2ea7d86ccfa9a888bd28dd79ebe Mon Sep 17 00:00:00 2001 From: Michael Gernoth Date: Sat, 11 Apr 2015 14:34:44 +0200 Subject: [PATCH] ALSA: emu10k1: handle dock disconnects When the dock on an E-mu 1010 card is disconnected, all outputs get muted by the hardware. Add logic to detect a disconnect and unmute. Signed-off-by: Michael Gernoth Signed-off-by: Takashi Iwai --- sound/pci/emu10k1/emu10k1_main.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/sound/pci/emu10k1/emu10k1_main.c b/sound/pci/emu10k1/emu10k1_main.c index 4887299011ef..54079f5d5673 100644 --- a/sound/pci/emu10k1/emu10k1_main.c +++ b/sound/pci/emu10k1/emu10k1_main.c @@ -707,6 +707,7 @@ static int emu1010_firmware_thread(void *data) { struct snd_emu10k1 *emu = data; u32 tmp, tmp2, reg; + u32 last_reg = 0; int err; for (;;) { @@ -782,7 +783,15 @@ static int emu1010_firmware_thread(void *data) msleep(10); /* Unmute all. Default is muted after a firmware load */ snd_emu1010_fpga_write(emu, EMU_HANA_UNMUTE, EMU_UNMUTE); + } else if (!reg && last_reg) { + /* Audio Dock removed */ + dev_info(emu->card->dev, + "emu1010: Audio Dock detached\n"); + /* Unmute all */ + snd_emu1010_fpga_write(emu, EMU_HANA_UNMUTE, EMU_UNMUTE); } + + last_reg = reg; } dev_info(emu->card->dev, "emu1010: firmware thread stopping\n"); return 0; -- 2.20.1