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drivers: pinctrl sleep and idle states in the core

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If a device have sleep and idle states in addition to the
default state, look up these in the core and stash them in
the pinctrl state container.

Add accessor functions for pinctrl consumers to put the pins
into "default", "sleep" and "idle" states passing nothing but
the struct device * affected.

Solution suggested by Kevin Hilman, Mark Brown and Dmitry
Torokhov in response to a patch series from Hebbar
Gururaja.

Cc: Hebbar Gururaja <gururaja.hebbar@ti.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Acked-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij
2013-06-05 15:30:33 +02:00
parent 7970cb770d
commit 14005ee270
4 changed files with 118 additions and 0 deletions
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34
include/linux/pinctrl/consumer.h
View File

@@ -40,6 +40,25 @@ extern int pinctrl_select_state(struct pinctrl *p, struct pinctrl_state *s);
extern struct pinctrl * __must_check devm_pinctrl_get(struct device *dev);
extern void devm_pinctrl_put(struct pinctrl *p);
#ifdef CONFIG_PM
extern int pinctrl_pm_select_default_state(struct device *dev);
extern int pinctrl_pm_select_sleep_state(struct device *dev);
extern int pinctrl_pm_select_idle_state(struct device *dev);
#else
static inline int pinctrl_pm_select_default_state(struct device *dev)
{
return 0;
}
static inline int pinctrl_pm_select_sleep_state(struct device *dev)
{
return 0;
}
static inline int pinctrl_pm_select_idle_state(struct device *dev)
{
return 0;
}
#endif
#else /* !CONFIG_PINCTRL */
static inline int pinctrl_request_gpio(unsigned gpio)
@@ -199,6 +218,21 @@ static inline int pin_config_group_set(const char *dev_name,
return 0;
}
static inline int pinctrl_pm_select_default_state(struct device *dev)
{
return 0;
}
static inline int pinctrl_pm_select_sleep_state(struct device *dev)
{
return 0;
}
static inline int pinctrl_pm_select_idle_state(struct device *dev)
{
return 0;
}
#endif
#endif /* __LINUX_PINCTRL_CONSUMER_H */