• James Hogan's avatar
    gpio-tz1090-pdc: add TZ1090 PDC gpio driver · 79bb6460
    James Hogan authored
    Add a GPIO driver for the low-power Powerdown Controller GPIOs in the
    TZ1090 SoC.
    
    The driver is instantiated by device tree and supports interrupts for
    the SysWake GPIOs only.
    
    Changes in v4:
     - fix typos in DT bindings compatible properties
     - reference Documentation/devicetree/bindings/gpio/gpio.txt in
       gpio-ranges description in DT bindings
     - fix gpio-ranges examples in DT bindings (it must now have 3 cells)
    
    Changes in v3:
     - separated from irq-imgpdc and removed arch/metag changes to allow
       these patches to go upstream separately via the pinctrl[/gpio] trees
       (particularly the pinctrl drivers depend on the new pinconf DT
       bindings).
     - some s/unsigned/unsigned int/.
     - gpio-tz1090*: refer to <dt-bindings/gpio/gpio.h> and
       <dt-bindings/interrupt-controller/irq.h> flags in bindings.
     - gpio-tz1090*: move initcall from postcore to subsys.
    
    Changes in v2:
     - gpio-tz1090-pdc: remove references to Linux flags in dt bindings
     - gpio-tz1090-pdc: make use of BIT() from linux/bitops.h
     - gpio-tz1090-pdc: make register accessors inline to match pinctrl
     - gpio-tz1090-pdc: update gpio-ranges to use 3 cells after recent ABI
       breakage
    Signed-off-by: default avatarJames Hogan <james.hogan@imgtec.com>
    Cc: Grant Likely <grant.likely@linaro.org>
    Cc: Rob Herring <rob.herring@calxeda.com>
    Cc: Rob Landley <rob@landley.net>
    Cc: Linus Walleij <linus.walleij@linaro.org>
    Cc: linux-doc@vger.kernel.org
    Cc: devicetree-discuss@lists.ozlabs.org
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
    79bb6460
gpio-tz1090-pdc.c 6.07 KB