[#4922] unwanted sound comes up after g_audio module is installed on BF548 and BF527
Submitted By: Vivi Li
Open Date
2009-02-20 05:05:01 Close Date
2009-12-18 03:23:09
Priority:
Medium Assignee:
Cliff Cai
Status:
Closed Fixed In Release:
N/A
Found In Release:
2009R1-RC6 Release:
Category:
Drivers Board:
EZKIT Lite
Processor:
BF548 Silicon Revision:
Is this bug repeatable?:
Yes Resolution:
Assigned (Not Start)
Uboot version or rev.:
Toolchain version or rev.:
gcc4.1_2009-01-19
App binary format:
N/A
Summary: unwanted sound comes up after g_audio module is installed on BF548 and BF527
Details:
For gadget audio test on BF548 and BF527, after g_audio module is installed, there will be unwanted sound even nothing is played on PC.
And I can not play audio until module is installed for more than 5 seconds. During this time, error message of "Device or resource busy" will come out.
--
(on target board)
root:/> modprobe g_audio
g_audio gadget: Hardware params: access 3, format 2, channels 2, rate 48000
g_audio gadget: audio_buf_size 48000, req_buf_size 200, req_count 256
g_audio gadget: Linux USB Audio Gadget, version: Dec 18, 2008
g_audio gadget: g_audio ready
root:/> g_audio gadget: high speed config #1: Linux USB Audio Gadget
(on PC)
test@uclinux63-527-usbdev:~/work/cruise/checkouts/uclinux-dist/testsuites/usbdev> aplay -D plug:hw:1 ../bluetoothalsa/test.wav
ALSA lib pcm_hw.c:1240:(_snd_pcm_hw_open) Invalid value for card
aplay: main:583: audio open error: No such file or directory
test@uclinux63-527-usbdev:~/work/cruise/checkouts/uclinux-dist/testsuites/usbdev> aplay -D plug:hw:1 ../bluetoothalsa/test.wav
aplay: main:583: audio open error: Device or resource busy
test@uclinux63-527-usbdev:~/work/cruise/checkouts/uclinux-dist/testsuites/usbdev> aplay -D plug:hw:1 ../bluetoothalsa/test.wav
aplay: main:583: audio open error: Device or resource busy
test@uclinux63-527-usbdev:~/work/cruise/checkouts/uclinux-dist/testsuites/usbdev> aplay -D plug:hw:1 ../bluetoothalsa/test.wav
aplay: main:583: audio open error: Device or resource busy
test@uclinux63-527-usbdev:~/work/cruise/checkouts/uclinux-dist/testsuites/usbdev> aplay -D plug:hw:1 ../bluetoothalsa/test.wav
Playing WAVE '../bluetoothalsa/test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
--
Follow-ups
--- Vivi Li 2009-08-12 05:27:00
For 09r1 branch, this bug disappear on bf527-ezkit. But still has this problem
on bf548-ezkit.
--- Cliff Cai 2009-12-18 02:24:19
don't see it on bf527c.AD1980 is out of date.
--- Vivi Li 2009-12-18 03:23:09
yes, close it.
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