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

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Date:   Tue, 31 Jan 2023 10:16:17 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Neil Armstrong <neil.armstrong@...aro.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 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?

> +	help
> +	  This driver enables UCSI support on platforms that expose UCSI
> +	  interface as PMIC GLINK device.

Module name when built?

A follow-on patch can be sent, this is minor.

thanks,

greg k-h