linux-kernel - Re: [PATCH v6 2/2] input: add Qualcomm SPMI haptics driver

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Date:   Tue, 11 Oct 2022 08:13:33 -0400
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Caleb Connolly <caleb@...nolly.tech>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        devicetree@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Jeff LaBundy <jeff@...undy.com>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Rob Herring <robh+dt@...nel.org>, Tom Rix <trix@...hat.com>
Subject: Re: [PATCH v6 2/2] input: add Qualcomm SPMI haptics driver

On 10/10/2022 12:30, Caleb Connolly wrote:
> Add support for the haptics found in pmi8998 and related PMICs.
> Based on the ff-memless interface. Currently this driver provides
> a partial implementation of hardware features.
> 
> This driver only supports LRAs (Linear Resonant Actuators) in the "buffer"
> mode with a single wave pattern.
> 
> Signed-off-by: Caleb Connolly <caleb@...nolly.tech>
> ---
>  drivers/input/misc/Kconfig                |  15 +
>  drivers/input/misc/Makefile               |   1 +
>  drivers/input/misc/qcom-pmi8998-haptics.c | 690 ++++++++++++++++++++++
>  3 files changed, 706 insertions(+)
>  create mode 100644 drivers/input/misc/qcom-pmi8998-haptics.c
> 
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index a18ab7358d8f..c3b59ea23144 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -186,6 +186,21 @@ config INPUT_PMIC8XXX_PWRKEY
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called pmic8xxx-pwrkey.
> 
> +config INPUT_QCOM_PMI8998_HAPTICS
> +	tristate "Qualcomm SPMI HAPTICS"
> +	depends on ARCH_QCOM

|| COMPILE_TEST

> +	depends on MFD_PM8XXX || MFD_SPMI_PMIC

|| COMPILE_TEST (and actually test it)

> +	select INPUT_FF_MEMLESS
> +	help
> +	  This option enables support for the haptics found in pmi8998 and
> +	  related PMICs. Based on the ff-memless interface.
> +
> +	  This driver is for hardware too new for the INPUT_PM8XXX_VIBRATOR
> +	  driver.
> +
> +	  To compile this driver as module, choose M here: the
> +	  module will be called qcom_pmi8998_haptics.
> +


Best regards,
Krzysztof