On Thu, Jun 17, 2021 at 05:08:09PM +0800, shumingf@realtek.com wrote:
> From: Shuming Fan <shumingf@realtek.com>
> 
> This patch uses the same mapping as the machine driver:
> BTN_0 : KEY_PLAYPAUSE
> BTN_1 : KEY_VOICECOMMAND
> BTN_2 : KEY_VOLUMEUP
> BTN_3 : KEY_VOLUMEDOWN

Which machine driver?  Can't there be multiple machine drivers, and if
they're already overriding things why do this?