RE: usb: gadget: dwc2: not getting audio data

PALAK SHAH
2023-04-06T18:06:44Z

Hi Minas,
Thank you for the patch. I was able to run the test 15 and 16.
[palakshah@localhost usb]$ sudo ./testusb -D /dev/bus/usb/003/002 -t15
unknown speed /dev/bus/usb/003/002 0
/dev/bus/usb/003/002 test 15, 32.000889 secs

[palakshah@localhost usb]$ sudo ./testusb -D /dev/bus/usb/003/002 -t16
unknown speed /dev/bus/usb/003/002 0
/dev/bus/usb/003/002 test 16, 32.000911 secs

Thanks,
Palak

-----Original Message-----
From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Sent: Thursday, April 6, 2023 12:57 AM
To: PALAK SHAH <palak.shah@raritan.com>
Cc: linux-usb@vger.kernel.org
Subject: RE: usb: gadget: dwc2: not getting audio data

Hi Palak,

>On 4/6/2023 5:43 AM, Palak SHAH wrote:
>From: PALAK SHAH <palak.shah@raritan.com>
>Sent: Thursday, April 6, 2023 5:43 AM
>To: Minas Harutyunyan <hminas@synopsys.com>
>Cc: linux-usb@vger.kernel.org
>Subject: RE: usb: gadget: dwc2: not getting audio data
>
>Hi Minas,
>Last week I was able to install g_zero driver on the device side. And I
>installed usbtest.ko as a static driver on the linux host kernel
>running kernel version 5.0.9.
>
>On the host I see -
>[palakshah@localhost usb]$ lsusb
>Bus 002 Device 002: ID 8087:8000 Intel Corp.
>Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001
>Device 002: ID 8087:8008 Intel Corp.
>Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004
>Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 006:
>ID 0525:a4a0 Netchip Technology, Inc. Linux-USB "Gadget Zero" // g_zero
>driver Bus 003 Device 002: ID 04b4:0101 Cypress Semiconductor Corp.
>Keyboard/Hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root
>hub
>
>I ran the test
>[palakshah@localhost usb]$ sudo ./testusb -a
>unknown speed /dev/bus/usb/003/006 0
>/dev/bus/usb/003/006 test 0, 0.000013 secs
>/dev/bus/usb/003/006 test 1, 0.216270 secs
>/dev/bus/usb/003/006 test 2, 0.096186 secs
>/dev/bus/usb/003/006 test 3, 0.216282 secs
>/dev/bus/usb/003/006 test 4, 0.096046 secs
>/dev/bus/usb/003/006 test 5, 2.870960 secs
>/dev/bus/usb/003/006 test 6, 3.055972 secs
>/dev/bus/usb/003/006 test 7, 2.872110 secs
>/dev/bus/usb/003/006 test 8, 3.059713 secs
>/dev/bus/usb/003/006 test 9, 8.601377 secs
>/dev/bus/usb/003/006 test 10, 26.794975 secs
>/dev/bus/usb/003/006 test 11, 4.006801 secs
>/dev/bus/usb/003/006 test 12, 4.002395 secs
>/dev/bus/usb/003/006 test 13, 4.874480 secs
>/dev/bus/usb/003/006 test 14 --> 22 (Invalid argument)
>/dev/bus/usb/003/006 test 17, 0.185385 secs
>/dev/bus/usb/003/006 test 18, 0.098154 secs
>/dev/bus/usb/003/006 test 19, 0.197473 secs
>/dev/bus/usb/003/006 test 20, 0.098188 secs
>/dev/bus/usb/003/006 test 21 --> 22 (Invalid argument)
>
>Atleast now I can run some of the tests, however I am interested in the
>ISOC transfer, which is tested using t15 and t16. But test 15 and 16 did not run.
>
>I put more messages in the code and I found that, it exits both the tests -
> if (dev->out_iso_pipe == 0 || param->sglen == 0){
> pr_info("TEST 15: dev->out_iso_pipe == 0 ||
>param->sglen == 0 Error condition!!\n");
> break;
> }
>
>I put more messages in the code, and I realize that dev->out_iso_pipe is null.
>
> if (dev->in_pipe){
> printk("dev->in_pipe is true\n"); this gets printed
> rtest = " bulk-in";
> }
> if (dev->out_pipe){
> printk("dev->out_pipe is true\n"); this gets printed
> wtest = " bulk-out";
> }
> if (dev->in_iso_pipe){
> printk("dev->in_iso_pipe is true\n"); // this doesn't get printed.
> irtest = " iso-in";
> }
> if (dev->out_iso_pipe){
> printk("dev->out_iso_pipe is true\n"); // not printed
> iwtest = " iso-out";
> }
>
>Some dmesg messages that I printed, it prints in_pipe and out_pipe is
>true for BULK transfer, but ISOC transfer is not set.
>
>[ 2.051466] usb 3-8: New USB device found, idVendor=0525,
>idProduct=a4a0, bcdDevice= 5.04
>[ 2.051468] usb 3-8: New USB device strings: Mfr=1, Product=2,
>SerialNumber=3
>[ 2.051469] usb 3-8: Product: Gadget Zero
>[ 2.051470] usb 3-8: Manufacturer: Linux 5.4.80-kx4 with ffb40000.usb
>[ 2.051471] usb 3-8: SerialNumber: 0123456789.0123456789.0123456789
>[ 2.053199] USBTEST.ko usbtest_probe!!!
>[ 2.053200] dev->in_pipe is true
>[ 2.053200] dev->out_pipe is true
>[ 2.053201] USBTEST : Linux gadget zero
>[ 2.053202] USBTEST high-speed {control in/out bulk-in bulk-out} tests (+alt)
>[ 2.166449] usb 3-10: new low-speed USB device number 3 using xhci_hcd
>
>Any idea how I can test ISOC test?

To run isoc tests test 15/16 apply follow patch:

diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index ac0d75ac2d2f..7736b0a98cab 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -187,9 +187,11 @@ get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf)
continue;
}
}
- if ((in && out) || iso_in || iso_out || int_in || int_out)
- goto found;
}
+
+ if ((in && out) || iso_in || iso_out || int_in || int_out)
+ goto found;
+
return -EINVAL;

found:

Thanks,
Minas

>
>Thanks,
>Palak
>
>-----Original Message-----
>From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
>Sent: Friday, March 10, 2023 4:04 AM
>To: Palak SHAH <palak.shah@raritan.com>; Maynard CABIENTE
><maynard.cabiente@raritan.com>
>Cc: linux-usb@vger.kernel.org
>Subject: RE: usb: gadget: dwc2: not getting audio data
>
>Hi Palak,
>
>>On 3/9/2023 8:21 PM, Palak SHAH wrote:
>>From: Palak SHAH <palak.shah@raritan.com>
>>Sent: Thursday, March 9, 2023 8:21 PM
>>To: Minas Harutyunyan <hminas@synopsys.com>; Maynard CABIENTE
>><maynard.cabiente@raritan.com>
>>Cc: linux-usb@vger.kernel.org
>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>
>>Hi Minas,
>>Yes I do have g_audio module loaded.
>>
>>This dmesg logs are from my device -
>>[ 1151.517385] g_audio gadget: Linux USB Audio Gadget, version: Feb 2,
>>2012 [ 1151.517401] g_audio gadget: g_audio ready [ 1151.517418] dwc2
>>ffb00000.usb: bound driver g_audio [ 1151.640143] dwc2 ffb40000.usb:
>>bound driver configfs-gadget [ 1151.808188] dwc2 ffb40000.usb: new
>>device is high- speed [ 1151.922374] dwc2 ffb40000.usb: new device is
>>high-speed [ 1151.982406] dwc2 ffb40000.usb: new address 24 [
>>1151.996762] configfs- gadget gadget: high-speed config #1: c
>>
>># lsmod
>>Module Size Used by
>>usb_f_uac1 20480 3
>>u_audio 20480 1 usb_f_uac1
>>snd_pcm 94208 1 u_audio
>>snd_timer 36864 1 snd_pcm
>>g_audio 16384 0
>>usb_f_hid 20480 9
>>libcomposite 61440 16 usb_f_uac1,u_audio,g_audio,usb_f_hid
>>
>>This is my host -
>>[palakshah@fedora ~]$ lsusb
>>Bus 002 Device 002: ID 0bda:0328 Realtek Semiconductor Corp.
>>USB3.0-CRW Bus
>>002 Device 003: ID 0bda:0411 Realtek Semiconductor Corp. Hub Bus 002
>>Device
>>001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 023: ID
>>14dd:1010 Raritan Computer, Inc. KX4-101 // this is my device that I
>>am connected to.
>>Bus 001 Device 002: ID 14dd:1007 Raritan Computer, Inc. D2CIM-VUSB KVM
>>connector Bus 001 Device 005: ID 8087:0a2b Intel Corp. Bluetooth
>>wireless interface Bus 001 Device 004: ID 0bda:5411 Realtek
>>Semiconductor
>Corp.
>>RTS5411 Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root
>>hub
>>
>>[palakshah@fedora ~]$ sudo ./testusb -D /dev/bus/usb/001/023 -t15
>>[sudo] password for palakshah:
>>./testusb: /dev/bus/usb/001/023 may see only control tests
>>/dev/bus/usb/001/023 test 15 --> 25 (Inappropriate ioctl for device)
>>
>>[palakshah@fedora ~]$ sudo ./testusb -D /dev/bus/usb/001/023 -t16
>>./testusb: /dev/bus/usb/001/023 may see only control tests
>>/dev/bus/usb/001/023 test 16 --> 25 (Inappropriate ioctl for device)
>>
>>But still host cannot talk to the device.
>>
>
>On host side should be loaded module usbtest.ko On device side remove
>your
>function(gadget) driver, instead load g_zero (not g_audio) function.
>
>Thanks,
>Minas
>
>
>>Thanks,
>>Palak
>>
>>-----Original Message-----
>>From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
>>Sent: Thursday, March 9, 2023 5:03 AM
>>To: Palak SHAH <palak.shah@raritan.com>; Maynard CABIENTE
>><maynard.cabiente@raritan.com>
>>Cc: linux-usb@vger.kernel.org
>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>
>>Hi Palak,
>>
>>>On 3/9/2023 1:42 AM, Palak SHAH wrote:
>>>From: Palak SHAH <palak.shah@raritan.com>
>>>Sent: Thursday, March 9, 2023 1:42 AM
>>>To: Minas Harutyunyan <hminas@synopsys.com>; Maynard CABIENTE
>>><maynard.cabiente@raritan.com>
>>>Cc: linux-usb@vger.kernel.org
>>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>>
>>>Hi Minas,
>>>A while ago, I asked you if I can run a usb test, to test IP core,
>>>without doing audio test.
>>>
>>>You had suggested that to test usbtest program (see
>>>https://urldefense.com/v3/__https://eur01.safelinks.protection.outlook.
>>>com/?url=https*3A*2F*2Furldefense.com*2Fv3*2F__https*3A*2F*2Feur01
>.saf
>>>e
>>>links.protection.outlook.com*2F&data=05*7C01*7Cpalak.shah*40raritan.c
>o
>>>m
>>>*7Ce899edf3108b4733963408db2085841d*7C199686b5bef4496087867a6b
>1888fee3
>>>*
>>>7C1*7C0*7C638139530054005175*7CUnknown*7CTWFpbGZsb3d8eyJWIjoi
>MC4wLjAwM
>>>D
>>>AiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&
>sdata
>>>=
>>>efRKGkGDjq5OhK347*2B6r2*2FaXjZy4wysBzzl5XezhEZo*3D&reserved=0*__
>;JSUlJ
>>>S
>>>UlJSUlJSUlJSUlJSUlJSUlJSUlJSUlPw!!A4F2R9G_pg!fXoTRt1krMtYNUcU033cc_C
>Yw
>>>9 YrC_nUj99EXR4vAwT-
>hb3T78zqvyakXvx4elweFNfmoHxwarh2RDYX7L7rJqCcWz9z$
>>>url=http*3A*2F*2Fwww.linux-
>>>usb.org*2Fusbtest*2F&data=05*7C01*7Cpalak.shah*40raritan.com*7Ccdc9
>cf1
>>>8
>>>d5c54
>>>b2c74fc08daf53d681e*7C199686b5bef4496087867a6b1888fee3*7C1*7C0*7
>C63809
>>>1
>>>94134
>>>5558693*7CUnknown*7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV
>2luMzIiLC
>>>J
>>>BTiI6
>>>Ik1haWwiLCJXVCI6Mn0*3D*7C3000*7C*7C*7C&sdata=OIiLXl6dlCHlfACx6Zx
>pLhQkp
>>>0
>>>7xIwb
>>>qAR3CtnqfsFU*3D&reserved=0__;JSUlJSUlJSUlJSUlJSUlJSUlJSUl!!A4F2R9G_pg
>!
>>>f
>>>3GN6S
>>>P6NM--pKekkA-jG4RICPguFvb3DNeRO6jFDEhovrY3IEC2-
>>>aL0ay4g95j7BsdRM6JRGwjL6kPzTS8z13tShKOe$ )
>>>
>>>So I tried this program. I compiled it on my linux host, and run it
>>>on the host, which is connected to the Linux device acting as USB gadget.
>>>
>>>I am running test t15 and t16 which is for ISOC. Infact I tried
>>>running
>>all.
>>>I ran it on the host device. And I get this error -
>>>
>>>[palakshah@fedora ~]$ sudo ./testusb -D /dev/bus/usb/001/019 -t15
>>>./testusb: /dev/bus/usb/001/019 may see only control tests
>>>/dev/bus/usb/001/019 test 15 --> 25 (Inappropriate ioctl for device)
>>>
>>>Either I get error 25 (Inappropriate ioctl for device) or error 38
>>>(Function Not Implemented).
>>>
>>>If I do, [palakshah@fedora ~]$ sudo ./testusb -a no test devices
>>>recognized
>>>
>>>I tried to google, why these tests don't work, but did not find
>>>anything useful. Do you have any idea?
>>>
>>
>>Did you modprobe g_zero module on device side?
>>lsusb command should show that connected device:
>>...
>>Bus 001 Device 002: ID 0525:a4a0 Netchip Technology, Inc. Linux-USB
>>"Gadget Zero"
>>...
>>
>>Thanks,
>>Minas
>>
>>>Thanks,
>>>Palak
>>>
>>>-----Original Message-----
>>>From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
>>>Sent: Monday, March 6, 2023 11:31 PM
>>>To: Palak SHAH <palak.shah@raritan.com>; Maynard CABIENTE
>>><maynard.cabiente@raritan.com>
>>>Cc: linux-usb@vger.kernel.org
>>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>>
>>>Hi Palak,
>>>
>>>>On 3/6/2023 8:26 AM, Palak SHAH wrote:
>>>>From: Palak SHAH <palak.shah@raritan.com>
>>>>Sent: Monday, March 6, 2023 8:26 PM
>>>>To: Minas Harutyunyan <hminas@synopsys.com>; Maynard CABIENTE
>>>><maynard.cabiente@raritan.com>
>>>>Cc: linux-usb@vger.kernel.org
>>>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>>>
>>>>Hi Minas,
>>>>
>>>>>I can recommend you:
>>>>>1. disable debug prints to minimize platform loading
>>>>
>>>>[Palak] I am working on this
>>>>
>>>>>2. change Descriptor DMA mode to Buffer DMA
>>>>
>>>>[Palak] Can you please explain this more, what does this mean?
>>>
>>>Core can work in 3 different modes to transferring data between FIFO
>>>and
>>>RAM: Slave, Buffer DMA and Descriptor DMA.
>>>
>>>To switch from DDMA to BDMA in file params.c file in function
>>>dwc2_set_default_params()
>>> ...
>>> if ((hsotg->dr_mode == USB_DR_MODE_PERIPHERAL) ||
>>> (hsotg->dr_mode == USB_DR_MODE_OTG)) {
>>> p->g_dma = dma_capable;
>>> p->g_dma_desc = hw->dma_desc_enable;
>>> ...
>>>Update last line to
>>> p->g_dma_desc = 0;
>>>
>>>Thanks,
>>>Minas
>>>
>>>>
>>>>Thanks,
>>>>Palak
>>>>
>>>>-----Original Message-----
>>>>From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
>>>>Sent: Thursday, March 2, 2023 11:35 PM
>>>>To: Palak SHAH <palak.shah@raritan.com>; Maynard CABIENTE
>>>><maynard.cabiente@raritan.com>
>>>>Cc: linux-usb@vger.kernel.org
>>>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>>>
>>>>Hi Palak,
>>>>
>>>>>On 2/28/2023 12:21 AM, Palak SHAH wrote:
>>>>>From: Palak SHAH <palak.shah@raritan.com>
>>>>>Sent: Tuesday, February 28, 2023 12:21 AM
>>>>>To: Minas Harutyunyan <hminas@synopsys.com>; Maynard CABIENTE
>>>>><maynard.cabiente@raritan.com>
>>>>>Cc: linux-usb@vger.kernel.org
>>>>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>>>>
>>>>>Hi Minas,
>>>>>I have attached the following USB traces and debug log.
>>>>>1) dmesg and usb sniffer logs during driver loading.
>>>>>
>>>>>2) EP1(OUT) - I play AUDIO on the HOST. And I do arecord on the
>>>>>linux device that acts as USB gadget. So the audio is going OUT
>>>>>from the host. So you will see EP1 OUT.
>>>>>I have attached logs and USB sniffer data, during arecord.
>>>>>
>>>>>I am not testing ISOC EP1(IN) yet. I am still seeing and debugging
>>>>>issues with Ep1(out).
>>>>>
>>>>>3) When I change UAC1_DEF_REQ_NUM 2 changed to 32, the problem
>STILL
>>>>>exist with EP1(OUT). ONLY log behaivor is different. In the log I
>>>>>see XferCompl, but I don't get any data in the arecord.
>>>>>I have attached 2 files. Arecord_command.txt shows what I run.
>>>>>Arecord_output shows what I get after I run the command.
>>>>>
>>>>>4) I sent you regdump, hw_params, params and fifo in the previous
>email.
>>>>>
>>>>
>>>>I'm not find any issue based on the '_arecord.txt', just again 7
>>>>second time
>>>>gap:
>>>>
>>>>[ 228.173271] dwc2 ffb40000.usb: dwc2_hsotg_epint: At the end of
>>>>the function, dwc2_hsotg_epint() [ 228.173271] [ 235.536299] dwc2
>>>>ffb40000.usb: dwc2_hsotg_ep_queue, ep1out: req 777cd34b: req
>>>>len(200)@req buf(af65750d), # of int=0, req zero=0, snok(short not
>>>>ok)=0
>>>>
>>>>I can recommend you:
>>>>1. disable debug prints to minimize platform loading 2. change
>>>>Descriptor DMA mode to Buffer DMA
>>>>
>>>>Thanks,
>>>>Minas
>>>>
>>>>
>>>>>Thanks,
>>>>>Palak
>>>>>
>>>>>-----Original Message-----
>>>>>From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
>>>>>Sent: Monday, February 27, 2023 5:18 AM
>>>>>To: Palak SHAH <palak.shah@raritan.com>; Maynard CABIENTE
>>>>><maynard.cabiente@raritan.com>
>>>>>Cc: linux-usb@vger.kernel.org
>>>>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>>>>
>>>>>Hi Palak,
>>>>>
>>>>>>On 2/27/2023 6:02 AM, Palak SHAH wrote:
>>>>>>From: Palak SHAH <palak.shah@raritan.com>
>>>>>>Sent: Monday, February 27, 2023 6:02 AM
>>>>>>To: Minas Harutyunyan <hminas@synopsys.com>; Maynard CABIENTE
>>>>>><maynard.cabiente@raritan.com>
>>>>>>Cc: linux-usb@vger.kernel.org
>>>>>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>>>>>
>>>>>>Hi Minas,
>>>>>>Please find attached the logs - regdump, hw_params, params and
>>>>>>fifo, taken when the driver is loaded.
>>>>>>
>>>>>>I will send the USB traces tomorrow.
>>>>>
>>>>>
>>>>>USB trace for arecord (EP1IN ISOC) and debug log.
>>>>>
>>>>>
>>>>>Could you please confirm that after defining UAC1_DEF_REQ_NUM to 32
>>>>>playing audio (EP1OUT ISOC) no any issue seen?
>>>>>
>>>>>Thanks,
>>>>>Minas
>>>>>
>>>>>>
>>>>>>Thanks,
>>>>>>Palak
>>>>>>
>>>>>>-----Original Message-----
>>>>>>From: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
>>>>>>Sent: Friday, February 24, 2023 5:33 AM
>>>>>>To: Palak SHAH <palak.shah@raritan.com>; Maynard CABIENTE
>>>>>><maynard.cabiente@raritan.com>
>>>>>>Cc: linux-usb@vger.kernel.org
>>>>>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>>>>>
>>>>>>Hi Polak,
>>>>>>
>>>>>>>On 2/24/2023 3:04 AM, Palak SHAH wrote:
>>>>>>>From: Palak SHAH <palak.shah@raritan.com>
>>>>>>>Sent: Friday, February 24, 2023 3:04 AM
>>>>>>>To: Minas Harutyunyan <hminas@synopsys.com>; Maynard CABIENTE
>>>>>>><maynard.cabiente@raritan.com>
>>>>>>>Cc: linux-usb@vger.kernel.org
>>>>>>>Subject: RE: usb: gadget: dwc2: not getting audio data
>>>>>>>
>>>>>>>Hi Minas,
>>>>>>>I have attached the log where I connect to the audio gadget (and
>>>>>>>therefore, load the driver). We can do it using command line on a
>>>>>>>serial prompt or using GUI and connecting to Audio gadget.
>>>>>>>
>>>>>>>However, in both cases, I don't see any EP1(out) data and the
>>>>>>>register
>>>>>>dump.
>>>>>>>Ep1out comes out only when I play a you tube video and I do
>>>>>>>arecord to capture data.
>>>>>>
>>>>>>According your device configuration EP1(out) using when you play
>>>>>>audio, and
>>>>>>EP1(in) using when you record audio by arecord.
>>>>>>So, after driver loading these both ISOC EP's will not seen in log
>>>>>>until aplay/arecord will not run.
>>>>>>
>>>>>>>
>>>>>>>Please let me know if the log doesn't have the information you need.
>>>>>>
>>>>>>No, it's again dmesg. I asked for core all register dump which
>>>>>>available under debugfs's. dwc2 debugfs's under follow directory:
>>>>>>/sys/kernel/debug/usb/dwc2.2.auto/
>>>>>>In your case 'dwc2.2.auto' can be little bit different. In this
>>>>>>directory there are files regdump, hw_params, params, fifo, etc.
>>>>>>Just use 'cat regdump'
>>>>>>to get register dump. Please also provide me cat of hw_params,
>>>>>>params and fifo. These last 3 files need to cat just once after
>>>>>>driver
>>loading.
>>>>>>
>>>>>>>
>>>>>>>Also, I tried changing UAC1_DEF_REQ_NUM 2 changed to 32. I saw a
>>>>>>>change in the behaivor of logs, I got XferCompl all the time, and
>>>>>>>not
>>>>>ep_disabled.
>>>>>>
>>>>>>So, after defining UAC1_DEF_REQ_NUM to 32 playing audio (ep1out)
>>>>>>work without any issue? And increasing req number to 32 fixed
>>>>>>issue which we debug till now?
>>>>>>
>>>>>>>However, arecord behaivor did not change, meaning I still did not
>>>>>>>get the data. It only changed the logging behaivor.
>>>>>>
>>>>>>If you still see issues with arecord (ep1in) then please provide
>>>>>>me debug log for this case and USB trace by Ellisys.
>>>>>>
>>>>>>Thanks,
>>>>>>Minas
>>>>>>
>>>>>>
>>
>>
>>________________________________
>>
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>________________________________
>
>Ce message, ainsi que tous les fichiers joints à ce message, peuvent
>contenir des informations sensibles et/ ou confidentielles ne devant
>pas être divulguées. Si vous n'êtes pas le destinataire de ce message
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