linux-kernel - Re: [PATCH V4 3/6] soc: qcom: eud: Add driver support for Embedded USB Debugger(EUD)

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Message-ID: <f4804aba-0863-08f4-9362-7f0cc681285d@quicinc.com>
Date:   Thu, 27 Jan 2022 17:34:24 +0530
From:   Souradeep Chowdhury <quic_schowdhu@...cinc.com>
To:     Greg KH <greg@...ah.com>
CC:     <linux-arm-msm@...r.kernel.org>, <linux-usb@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <pure.logic@...us-software.ie>,
        <bjorn.andersson@...aro.org>, <robh@...nel.org>,
        <linux-kernel@...r.kernel.org>, <quic_tsoni@...cinc.com>,
        <quic_psodagud@...cinc.com>, <quic_satyap@...cinc.com>,
        <quic_pheragu@...cinc.com>, <quic_rjendra@...cinc.com>,
        <quic_sibis@...cinc.com>, <quic_saipraka@...cinc.com>
Subject: Re: [PATCH V4 3/6] soc: qcom: eud: Add driver support for Embedded
 USB Debugger(EUD)


On 1/26/2022 3:00 PM, Greg KH wrote:
> On Fri, Jan 21, 2022 at 07:23:48PM +0530, Souradeep Chowdhury wrote:
>> Add support for control peripheral of EUD (Embedded USB Debugger) to
>> listen to events such as USB attach/detach, pet EUD to indicate software
>> is functional.Reusing the platform device kobj, sysfs entry 'enable' is
>> created to enable or disable EUD.
>>
>> To enable the eud the following needs to be done
>> echo 1 > /sys/bus/platform/.../enable
>>
>> To disable eud, following is the command
>> echo 0 > /sys/bus/platform/.../enable
>>
>> Signed-off-by: Souradeep Chowdhury <quic_schowdhu@...cinc.com>
>> ---
>>   Documentation/ABI/testing/sysfs-driver-eud |   9 ++
>>   drivers/soc/qcom/Kconfig                   |  10 ++
>>   drivers/soc/qcom/Makefile                  |   1 +
>>   drivers/soc/qcom/qcom_eud.c                | 250 +++++++++++++++++++++++++++++
> This should go under drivers/usb/ as it's creating a USB generic
> user/kernel api that all future devices of this type must follow.
Ack. Will move this to drivers/usb.
>
> thanks,
>
> greg k-h