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pinctrl: add pinctrl_provide_dummies interface for platforms to use

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Add a interface pinctrl_provide_dummies for platform to indicate
whether it needs use pinctrl dummy state.

ChangeLog v3->v4:
* remove dummy gpio support in pinctrl subsystem.
  Let gpio driver decide whether it wants to use pinctrl gpio mux
  function.
ChangeLog v2->v3:
* Also changed the missed pinctrl gpio APIs in v1.
ChangeLog v1->v2:
* Based on sascha's suggestion, drop using kconfig since it will hide
  pinctrl errors on all other boards.
  See: https://lkml.org/lkml/2012/4/18/282
  It seemed both Linus and Stephen agreed with this way, so i'm ok
  with it too.
* Add dummy gpio support.
  pinctrl gpio in the same situation as state.
* Patch name changed.
  Original is pinctrl: handle dummy state in core.
* Split removing old dt dummy interface into a separate patch

Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Dong Aisheng
2012-04-26 16:15:50 +08:00
committed by Linus Walleij
parent ad6e1107ba
commit 5b3aa5f7c6
2 changed files with 31 additions and 3 deletions
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5
include/linux/pinctrl/machine.h
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@@ -154,7 +154,7 @@ struct pinctrl_map {
extern int pinctrl_register_mappings(struct pinctrl_map const *map,
unsigned num_maps);
extern void pinctrl_provide_dummies(void);
#else
static inline int pinctrl_register_mappings(struct pinctrl_map const *map,
@@ -163,5 +163,8 @@ static inline int pinctrl_register_mappings(struct pinctrl_map const *map,
return 0;
}
static inline void pinctrl_provide_dummies(void)
{
}
#endif /* !CONFIG_PINCTRL */
#endif