linux-kernel - Re: [PATCH V17 3/3] Input: new da7280 haptic driver

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Date:   Thu, 23 Jul 2020 13:50:37 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Roy Im <roy.im.opensource@...semi.com>,
        Uwe Kleine-Koenig <u.kleine-koenig@...gutronix.de>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Brian Masney <masneyb@...tation.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Lee Jones <lee.jones@...aro.org>, Luca Weiss <luca@...tu.xyz>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Pascal PAILLET-LME <p.paillet@...com>,
        Rob Herring <robh@...nel.org>,
        Samuel Ortiz <sameo@...ux.intel.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Support Opensource <support.opensource@...semi.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pwm@...r.kernel.org
Subject: Re: [PATCH V17 3/3] Input: new da7280 haptic driver

On 7/23/20 8:01 AM, Roy Im wrote:
> diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig
> index 362e8a0..06dc5a3 100644
> --- a/drivers/input/misc/Kconfig
> +++ b/drivers/input/misc/Kconfig
> @@ -869,4 +869,17 @@ config INPUT_STPMIC1_ONKEY
>  	  To compile this driver as a module, choose M here: the
>  	  module will be called stpmic1_onkey.
>  
> +config INPUT_DA7280_HAPTICS
> +	tristate "Dialog Semiconductor DA7280 haptics support"
> +	depends on INPUT && I2C
> +	select INPUT_FF_MEMLESS
> +	select REGMAP_I2C
> +	help
> +	  Say Y to enable support for the Dialog DA7280 haptics driver.
> +	  The haptics can be controlled by I2C communication,
> +	  or by PWM input, or by GPI.

	  Is that                GPIO.
?

Can the haptics be controlled only by PWM or only by GPI(O)?

Just curious: why is I2C required to build the driver if a user is
only controlling the device by PWM or GPI?


> +
> +	  To compile this driver as a module, choose M here: the
> +	  module will be called da7280.
> +
>  endif

thanks.
-- 
~Randy