linux-kernel - [PATCH 0/2] Add SW_MACHINE

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Date:   Fri, 12 Jun 2020 14:53:57 +0200
From:   Merlijn Wajer <merlijn@...zup.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     pavel@....cz, Merlijn Wajer <merlijn@...zup.org>,
        Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Rob Herring <robh+dt@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jeffrey Hugo <jhugo@...eaurora.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Borislav Petkov <bp@...e.de>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        Mattias Jacobsson <2pi@....nu>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Mark Gross <mgross@...ux.intel.com>,
        linux-omap@...r.kernel.org (open list:OMAP DEVICE TREE SUPPORT),
        devicetree@...r.kernel.org (open list:OMAP DEVICE TREE SUPPORT),
        linux-kernel@...r.kernel.org (open list),
        linux-input@...r.kernel.org (open list:INPUT (KEYBOARD, MOUSE, JOYSTICK
        , TOUCHSCREEN)...)
Subject: [PATCH 0/2] Add SW_MACHINE_COVER key

this series adds the sw_machine_cover key, and changes the nokia n900 dts to
expose the key via gpio-keys.

before, this gpio was used as card detect gpio, causing the card not to show up
if the phone was booted without cover, see this thread on linux-omap:

    n900: remove mmc1 "safety feature"? (was: re: mmc0 on nokia n900 on linux 5.4.18)

since there is no realistic use for using this gpio as card detect, instead
expose it to userspace via gpio-keys. there are no event type for machine covers
yet, so add that first.

the key should be 1 when the cover is closed, and 0 when the cover is open.

starting the nokia n900 with the cover removed, putting the cover in place:

    event: time 1581684523.415296, type 5 (ev_sw), code 16 (?), value 1

removing the cover again, exposing mmc1 and the battery:

    event: time 1581684529.413706, type 5 (ev_sw), code 16 (?), value 0

Merlijn Wajer (2):
  Input: add `SW_MACHINE_COVER`
  ARM: dts: n900: remove mmc1 card detect gpio

 arch/arm/boot/dts/omap3-n900.dts       | 12 ++++++++----
 include/linux/mod_devicetable.h        |  2 +-
 include/uapi/linux/input-event-codes.h |  3 ++-
 3 files changed, 11 insertions(+), 6 deletions(-)

-- 
2.24.1