• Sonic Zhang's avatar
    pinctrl: allow exlusive GPIO/mux pin allocation · fa76a3db
    Sonic Zhang authored
    Disallow simultaneous use of the the GPIO and peripheral mux
    functions by setting a flag "strict" in struct pinctrl_desc.
    
    The blackfin pinmux and gpio controller doesn't allow user to
    set up a pin for both GPIO and peripheral function. So, add flag
    strict in struct pinctrl_desc to check both gpio_owner and
    mux_owner before approving the pin request.
    
    v2-changes:
    - if strict flag is set, check gpio_owner and mux_onwer in if and
      else clause
    
    v3-changes:
    - add kerneldoc for this struct
    - augment Documentation/pinctrl.txt
    Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
    fa76a3db
pinmux.c 17.1 KB