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Date:   Fri, 29 Oct 2021 15:03:24 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Charles Mirabile <cmirabil@...hat.com>,
        linux-kernel@...r.kernel.org
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-input@...r.kernel.org,
        Serge Schneider <serge@...pberrypi.org>,
        Stefan Wahren <stefan.wahren@...e.com>,
        Nicolas Saenz Julienne <nsaenzju@...hat.com>,
        linux-rpi-kernel@...ts.infradead.org, fedora-rpi@...glegroups.com,
        Mwesigwa Guma <mguma@...hat.com>,
        Joel Savitz <jsavitz@...hat.com>
Subject: Re: [PATCH 2/5] drivers/input/joystick: sensehat: Raspberry Pi Sense
 HAT joystick driver

On 10/29/21 2:55 PM, Charles Mirabile wrote:
> This patch implements support for the joystick.
> It supports left/right/up/down/enter and is
> attached via i2c and a gpio pin for irq.
> 
> Signed-off-by: Charles Mirabile <cmirabil@...hat.com>
> Signed-off-by: Mwesigwa Guma <mguma@...hat.com>
> Signed-off-by: Joel Savitz <jsavitz@...hat.com>
> ---
>   drivers/input/joystick/Kconfig             |   8 ++
>   drivers/input/joystick/Makefile            |   1 +
>   drivers/input/joystick/sensehat-joystick.c | 135 +++++++++++++++++++++
>   3 files changed, 144 insertions(+)
>   create mode 100644 drivers/input/joystick/sensehat-joystick.c
> 
> diff --git a/drivers/input/joystick/Kconfig b/drivers/input/joystick/Kconfig
> index 3b23078bc7b5..d2f78353b74c 100644
> --- a/drivers/input/joystick/Kconfig
> +++ b/drivers/input/joystick/Kconfig
> @@ -399,4 +399,12 @@ config JOYSTICK_N64
>   	  Say Y here if you want enable support for the four
>   	  built-in controller ports on the Nintendo 64 console.
>   
> +config JOYSTICK_SENSEHAT
> +	tristate "Raspberry Pi Sense HAT joystick"
> +	depends on GPIOLIB && INPUT

I think also:
	depends on I2C

since this one:

> +	select MFD_SENSEHAT_CORE

also depends on I2C and 'select' does not follow any
dependency chains.

Same comment applies to patch 3/5 for SENSEHAT_DISPLAY.

> +
> +	help
> +	  This is the joystick driver for the Raspberry Pi Sense HAT
> +
>   endif


-- 
~Randy

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