linux-kernel - Re: [PATCH 1/7] usb: typec: ucsi: add PMIC Glink UCSI driver

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Message-ID: <720aee1d-87e8-5291-c6a0-ef53e830a21d@linaro.org>
Date:   Fri, 10 Feb 2023 11:31:08 +0100
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/7] usb: typec: ucsi: add PMIC Glink UCSI driver

On 31/01/2023 10:16, Greg Kroah-Hartman wrote:
> On Mon, Jan 30, 2023 at 10:54:32AM +0100, Neil Armstrong wrote:
>> Introduce the UCSI PMIC Glink aux driver that communicates
>> with the aDSP firmware with the UCSI protocol which handles
>> the USB-C Port(s) Power Delivery.
>>
>> The UCSI messaging is necessary on newer Qualcomm SoCs to
>> provide USB role switch and altmode notifications.
>>
>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>> ---
>>   drivers/usb/typec/ucsi/Kconfig      |   7 +
>>   drivers/usb/typec/ucsi/Makefile     |   1 +
>>   drivers/usb/typec/ucsi/ucsi_glink.c | 321 ++++++++++++++++++++++++++++++++++++
>>   3 files changed, 329 insertions(+)
>>
>> diff --git a/drivers/usb/typec/ucsi/Kconfig b/drivers/usb/typec/ucsi/Kconfig
>> index 8f9c4b9f31f7..dee6069e46a2 100644
>> --- a/drivers/usb/typec/ucsi/Kconfig
>> +++ b/drivers/usb/typec/ucsi/Kconfig
>> @@ -58,4 +58,11 @@ config UCSI_STM32G0
>>   	  To compile the driver as a module, choose M here: the module will be
>>   	  called ucsi_stm32g0.
>>   
>> +config UCSI_PMIC_GLINK
>> +	tristate "UCSI Qualcomm PMIC GLINK Interface Driver"
>> +	depends on QCOM_PMIC_GLINK
> 
> No way to test build this code without this option?

Nop, the QCOM_PMIC_GLINK is a build dependency, this can't be removed

> 
>> +	help
>> +	  This driver enables UCSI support on platforms that expose UCSI
>> +	  interface as PMIC GLINK device.
> 
> Module name when built?

OK will add a follow-patch if needed

Thanks,
Neil

> 
> A follow-on patch can be sent, this is minor.
> 
> thanks,
> 
> greg k-h