linux-kernel - Re: [PATCH] macintosh: move mac

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Date:   Tue, 9 May 2017 17:43:27 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Michal Suchanek <msuchanek@...e.de>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] macintosh: move mac_hid driver to input/mouse.

Hi Michal,

On Tue, May 09, 2017 at 09:14:18PM +0200, Michal Suchanek wrote:
> There is nothing mac-specific about this driver. Non-mac hardware with
> suboptimal built-in pointer devices exists.
> 
> This makes it possible to use this emulation not only on x86 and ppc
> notebooks but also on arm and mips.

I'd rather we did not promote from drivers/macintosh to other platforms,
but rather removed it. The same functionality can be done from
userspace.

What hardware do you believe would benefit from this and why?

Thanks.

> 
> Signed-off-by: Michal Suchanek <msuchanek@...e.de>
> ---
>  drivers/input/mouse/Kconfig                  | 20 ++++++++++++++++++++
>  drivers/input/mouse/Makefile                 |  1 +
>  drivers/{macintosh => input/mouse}/mac_hid.c |  0
>  drivers/macintosh/Kconfig                    | 17 -----------------
>  drivers/macintosh/Makefile                   |  1 -
>  5 files changed, 21 insertions(+), 18 deletions(-)
>  rename drivers/{macintosh => input/mouse}/mac_hid.c (100%)
> 
> diff --git a/drivers/input/mouse/Kconfig b/drivers/input/mouse/Kconfig
> index 89ebb8f39fee..5533fd3a113f 100644
> --- a/drivers/input/mouse/Kconfig
> +++ b/drivers/input/mouse/Kconfig
> @@ -12,6 +12,26 @@ menuconfig INPUT_MOUSE
>  
>  if INPUT_MOUSE
>  
> +config MAC_EMUMOUSEBTN
> +	tristate "Support for mouse button 2+3 emulation"
> +	depends on SYSCTL && INPUT
> +	help
> +	  This provides generic support for emulating the 2nd and 3rd mouse
> +	  button with keypresses.  If you say Y here, the emulation is still
> +	  disabled by default.  The emulation is controlled by these sysctl
> +	  entries:
> +	  /proc/sys/dev/mac_hid/mouse_button_emulation
> +	  /proc/sys/dev/mac_hid/mouse_button2_keycode
> +	  /proc/sys/dev/mac_hid/mouse_button3_keycode
> +
> +	  If you have an Apple machine with a 1-button mouse, say Y here.
> +
> +	  This emulation can be useful on notebooks with suboptimal touchpad
> +	  hardware as well.
> +
> +	  To compile this driver as a module, choose M here: the
> +	  module will be called mac_hid.
> +
>  config MOUSE_PS2
>  	tristate "PS/2 mouse"
>  	default y
> diff --git a/drivers/input/mouse/Makefile b/drivers/input/mouse/Makefile
> index 56bf0ad877c6..dfaad1dd8857 100644
> --- a/drivers/input/mouse/Makefile
> +++ b/drivers/input/mouse/Makefile
> @@ -4,6 +4,7 @@
>  
>  # Each configuration option enables a list of files.
>  
> +obj-$(CONFIG_MAC_EMUMOUSEBTN)		+= mac_hid.o
>  obj-$(CONFIG_MOUSE_AMIGA)		+= amimouse.o
>  obj-$(CONFIG_MOUSE_APPLETOUCH)		+= appletouch.o
>  obj-$(CONFIG_MOUSE_ATARI)		+= atarimouse.o
> diff --git a/drivers/macintosh/mac_hid.c b/drivers/input/mouse/mac_hid.c
> similarity index 100%
> rename from drivers/macintosh/mac_hid.c
> rename to drivers/input/mouse/mac_hid.c
> diff --git a/drivers/macintosh/Kconfig b/drivers/macintosh/Kconfig
> index 97a420c11eed..011df09c5167 100644
> --- a/drivers/macintosh/Kconfig
> +++ b/drivers/macintosh/Kconfig
> @@ -159,23 +159,6 @@ config INPUT_ADBHID
>  
>  	  If unsure, say Y.
>  
> -config MAC_EMUMOUSEBTN
> -	tristate "Support for mouse button 2+3 emulation"
> -	depends on SYSCTL && INPUT
> -	help
> -	  This provides generic support for emulating the 2nd and 3rd mouse
> -	  button with keypresses.  If you say Y here, the emulation is still
> -	  disabled by default.  The emulation is controlled by these sysctl
> -	  entries:
> -	  /proc/sys/dev/mac_hid/mouse_button_emulation
> -	  /proc/sys/dev/mac_hid/mouse_button2_keycode
> -	  /proc/sys/dev/mac_hid/mouse_button3_keycode
> -
> -	  If you have an Apple machine with a 1-button mouse, say Y here.
> -
> -	  To compile this driver as a module, choose M here: the
> -	  module will be called mac_hid.
> -
>  config THERM_WINDTUNNEL
>  	tristate "Support for thermal management on Windtunnel G4s"
>  	depends on I2C && I2C_POWERMAC && PPC_PMAC && !PPC_PMAC64
> diff --git a/drivers/macintosh/Makefile b/drivers/macintosh/Makefile
> index 516eb65bcacc..ab8b1e74d160 100644
> --- a/drivers/macintosh/Makefile
> +++ b/drivers/macintosh/Makefile
> @@ -7,7 +7,6 @@
>  obj-$(CONFIG_PPC_PMAC)		+= macio_asic.o macio_sysfs.o
>  
>  obj-$(CONFIG_PMAC_MEDIABAY)	+= mediabay.o
> -obj-$(CONFIG_MAC_EMUMOUSEBTN)	+= mac_hid.o
>  obj-$(CONFIG_INPUT_ADBHID)	+= adbhid.o
>  obj-$(CONFIG_ANSLCD)		+= ans-lcd.o
>  
> -- 
> 2.10.2
> 

-- 
Dmitry