Porting WM8960 to Android jb4.2.2

[#1]

The document will introduce all steps for poring WM8960 audio codec to freescale android4.2.2 BSP.

Attachments include :

(1)Document for porting

(2)Codec driver : wm8960.c

(3)Machine driver: imx-wm8960.c

(4)wm8960 schematic for reference

(5)Android Audio HAL: config_wm8960.h

(6)schematic: MX6QDL-PIANO-CNFV1.DSN

(7)i.MX6DL BSP files

mx6dl_piano.c

mx6dl_piano.h

mx6dl_piano_pmic_pfuse100.c

(8)i.MX6Q BSP files

mx6q_piano.c

mx6q_piano.h

mx6q_piano_pmic_pfuse100.c

Freescale TICS Team

Weidong.sun

[huangkc]

This document is so wonderful!But Can you write a document introduce how to port the driver to android4.4.3?

[weidong_sun]

OK, thank you for your high praise！

porting to android4.4.3 wil be arranged to be next work.

Regards,

weidong

[huangkc]

looking forward to your new document!

Thandks

[wilsonchen]

hi sun,

I port the wm8960 code to android4.4.2, the wm8960 driver is ok,I can found the wm8960 sound card  and can found the

controlC0

pcmC0D0c

pcmC0D0p

timer

in /dev/snd dir.

but that has some problem,the logcat is:

W/audio_hw_primary( 2281): card -1, port 0 device 0x400

W/audio_hw_primary( 2281): rate 44100, channel 2 period_size 0xc0

E/audio_hw_primary( 2281): cannot open pcm_out driver 1: cannot open device '/dev/snd/pcmC4294967295D0p': No such file or directory

W/audio_hw_primary( 2281): card -1, port 0 device 0x400

W/audio_hw_primary( 2281): rate 44100, channel 2 period_size 0xc0

E/audio_hw_primary( 2281): cannot open pcm_out driver 1: cannot open device '/dev/snd/pcmC4294967295D0p': No such file or directory

and can't hear anything on the headphone.

all are base on the document's guide.

can you give me some advise?

[wilsonchen]

hi,sun!

Can you write a document introduce how to port the driver to android4.4.3/android5.0/yocto1.6.2?

Is there a plan？

[vijay_jay5]

Hi Wilson,

            I am using WM8960 for my project, I added above modules(config_wm8960.h,wm8960.c,wm8960.h,imx-wm8960.c) , Working Fine.I can able to hear the audio. Thanks Weidong.sun.

[vijay_jay5]

Hi Zidan,

          I want small info from you.I took sabresd reference, Audio COdec working fine( I can able to record & Listen audio),As per imx-wm8960(Machine drivers) routed Audio Codec(WM8960) to MIC(input1 ADC to store audio in Process) & Head_phone(Processor's DAC to output channel).

But As per my requirements i need to play Auxillory audio stream which connected to 2nd input channel & FM in 3rd input channel(Like below pic).

So how i can route(switch one input channel to other input channel) it in imx-wm8960.c file like below.

static const struct snd_soc_dapm_route imx6_audio_map[] = {

    { "Headphone Jack",         NULL,           "HP_L"      },

    { "Headphone Jack",         NULL,           "HP_R"      },

    { "Speaker_L",              NULL,           "SPK_LP"    },

    { "Speaker_L",              NULL,           "SPK_LN"    },

    { "Speaker_R",              NULL,           "SPK_RP"    },

    { "Speaker_R",              NULL,           "SPK_RN"    },

    { "LINPUT1",                NULL,           "MICB"      },

    { "MICB",                   NULL,           "Mic Jack"  },

//    { "LINPUT3",                "LINPUT3 Switch",       "HP_L"   },

//    { "RINPUT3",                "RINPUT3 Switch",       "HP_R"   },

}

I am waiting for your reply. Thank you.

[david5icp]

Hi,

It's not working on my platform. The only diffenent is i2c channel, othere are same.. does I lost something ?

------------------------------ parital log --------------------------------

usbcore: registered new interface driver snd-usb-audio

wm8960 i2C probe

wm8960 i2C probe sucessful

imx-hdmi-soc-dai: probe of imx-hdmi-soc-dai.0 failed with error -12

imx_wm8960_probe successful,MCLK is 24000000

wm8960 machine device add

ALSA device list:

  No soundcards found.

oprofile: using arm/armv7-ca9

GACT probability NOT on

Mirror/redirect action on

--------------------------------------------------------------------------

Please help me to check ... Thanks!

David5ICP

[weidong_sun]

Hi wilson,

     In our new BSP , wm8960 was supported. you can find it on i.MX6UL evk board.

Regards,

Weidong

[jiangshao]

请问，您的问题解决了吗？我也遇到了类似问题，ALSA device list:里找不到wm8960。若已经解决，介意告诉我解决方法吗？

[david5icp]

Hi Jiang,

 我當初的問題是 I2C channel 設定的問題, 因我的 i2c 與參考設計不同, 除在  board file 裡定義外, 在  driver 也須調整, 請見下述斜體字部分::

static struct snd_soc_dai_link imx_dai[] = {
{
.name = "HiFi",
.stream_name = "HiFi",
.codec_dai_name = "wm8960-hifi",
.codec_name = "wm8960.1-001a",
/* wm8960.1-001a代表的是用I2C1来控制codec,其I2C地址为0x1a;I2CX, X代表的是0,1,2,开始 */
.cpu_dai_name = "imx-ssi.1", 
/*
* 代表的是同一个声卡中的第一个设备与SSI1相连;I2SX X代表0,1,2;ssi.1代表SSI1。
* IMX6中的SSI接口有3对可以接着路I2S；三路SSI可以每路SSI 单独作为一个声卡，
* 也可以是一个声卡包含多个设备；
*/
.platform_name = "imx-pcm-audio.1",
/* 代表的连接接口与SSI来对应，用哪路SSI，其后面的数字就是几。 */
.init = imx_wm8960_init,
.ops = &imx_hifi_ops,
},
};

出處 詳細可參考這篇 :: http://www.bkjia.com/Androidjc/972723.html 

BR.

David Wu

[jiangshao]

非常感谢！在您的帮助下，wm8960终于被识别了。

只是似乎和hdmi有些冲突，在设置-》声音-》音量中修改音量时，偶尔会导致黑屏（hdmi接口的显示器）。而且声音播放也不正常。不知您是否遇到了类似问题？

[jiangshao]

你好，在David Wu的帮助下，wm8960终于被识别了。但是似乎和hdmi有些冲突，在设置-》声音-》音量中修改音量时，偶尔会导致黑屏（hdmi接口的显示器）。而且声音播放也不正常。这大概是哪里的问题？有解决的办法吗？

[david5icp]

Hi Jiang,

 我是沒有碰到你說的現象.. 但有發生開機時 HDMI 異常而造成 I2C 無法讀取 (我的 HDMI 與 Wm8960 接同一組 i2c).. .. 因為 我量了 i2c 發現是被  HDMI 拉到 low .. 以致同一 i2c channel 上的 devices 都不能用.. 我沒有繼續追查... 因我預計這是解不了了 (HDMI 本身造成)... 最後我把他們兩組分開了 ~

BR.

David Wu

[wilsonchen]

hi sun,

new BSP ,the wm8960 for the i.MX6UL board is the sai interface,but the imx6q/dl/solo must use the ssi interface.

so the wm8960 is not supported in imx6q/dl/solo.

Do you have the plan to port the wm8960 to the imx6q/dl/solo in the new kernel bsp?

thanks