串口调试信息如下：
[ 4.601946] asoc: WM8976 HiFi <-> s3c64xx-i2s mapping ok
[ 4.606797] ************************wangyulu wm8976_add_widgets************************
[ 4.614915] Entered s5pv210_wm8976_init
[ 4.618440] set_scenario_endpoints(); 0
[ 4.623468] set_scenario_endpoints(); 2
[ 4.628285] bus: 'platform': really_probe: bound device soc-audio to driver soc-audio
[ 4.633869] speaker_scan_init();
[ 4.637068] headphone is not insert
[ 4.943869] smdkv2xx_audio_init done
[ 4.943903] ALSA device list:
[ 4.943932] #0: smdk (WM8580)
[ 4.943961] #1: smdk (WM8976)
[ 4.944013] GACT probability NOT on
[ 4.944052] Mirror/redirect action on
[ 4.944088] u32 classifier
[ 4.944139] Actions configured
[ 4.947539] Netfilter messages via NETLINK v0.30.
[ 4.952273] nf_conntrack version 0.5.0 (5647 buckets, 22588 max)
[ 4.958343] CONFIG_NF_CT_ACCT is deprecated and will be removed soon. Please use
[ 4.965564] nf_conntrack.acct=1 kernel parameter, acct=1 nf_conntrack module option or
[ 4.973444] sysctl net.netfilter.nf_conntrack_acct=1 to enable it.
[ 4.980260] ctnetlink v0.93: registering with nfnetlink.
[ 4.985000] xt_time: kernel timezone is -0000
[ 4.991396] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 4.994600] arp_tables: (C) 2002 David S. Miller
[ 4.999158] TCP cubic registered
[ 5.002336] NET: Registered protocol family 10
[ 5.008643] lo: Disabled Privacy Extensions
[ 5.015833] Mobile IPv6
[ 5.015860] IPv6 over IPv4 tunneling driver
[ 5.019002] sit0: Disabled Privacy Extensions
[ 5.024788] ip6tnl0: Disabled Privacy Extensions
[ 5.027840] NET: Registered protocol family 17
[ 5.030821] NET: Registered protocol family 15
[ 5.035335] Bluetooth: L2CAP ver 2.14
[ 5.038874] Bluetooth: L2CAP socket layer initialized
[ 5.043923] Bluetooth: SCO (Voice Link) ver 0.6
[ 5.048403] Bluetooth: SCO socket layer initialized
[ 5.053325] Bluetooth: RFCOMM TTY layer initialized
[ 5.058121] Bluetooth: RFCOMM socket layer initialized
[ 5.063230] Bluetooth: RFCOMM ver 1.11