Commit 08383cd4 authored by Christian Bruel's avatar Christian Bruel Committed by Manivannan Sadhasivam
Browse files

pinctrl: Add pinctrl_pm_select_init_state helper function 



If a platform requires an initial pinctrl state during probing, this
helper function provides the client with access to the same initial
state.

eg:
 xxx_suspend_noirq
    ...
    pinctrl_pm_select_sleep_state

 xxx resume_noirq
    pinctrl_pm_select_init_state
    ...
    pinctrl_pm_select_default_state

Signed-off-by: default avatarChristian Bruel <christian.bruel@foss.st.com>
Signed-off-by: default avatarManivannan Sadhasivam <mani@kernel.org>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20250820075411.1178729-3-christian.bruel@foss.st.com
parent 272dad3f

drivers/pinctrl/core.c

+13 −0
Original line number Diff line number Diff line
@@ -1655,6 +1655,19 @@ int pinctrl_pm_select_default_state(struct device *dev) 
}

EXPORT_SYMBOL_GPL(pinctrl_pm_select_default_state);



/**

 * pinctrl_pm_select_init_state() - select init pinctrl state for PM

 * @dev: device to select init state for

 */

int pinctrl_pm_select_init_state(struct device *dev)

{

	if (!dev->pins)

		return 0;



	return pinctrl_select_bound_state(dev, dev->pins->init_state);

}

EXPORT_SYMBOL_GPL(pinctrl_pm_select_init_state);



/**

 * pinctrl_pm_select_sleep_state() - select sleep pinctrl state for PM

 * @dev: device to select sleep state for

include/linux/pinctrl/consumer.h

+10 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ int pinctrl_select_default_state(struct device *dev); 


#ifdef CONFIG_PM

int pinctrl_pm_select_default_state(struct device *dev);

int pinctrl_pm_select_init_state(struct device *dev);

int pinctrl_pm_select_sleep_state(struct device *dev);

int pinctrl_pm_select_idle_state(struct device *dev);

#else
@@ -55,6 +56,10 @@ static inline int pinctrl_pm_select_default_state(struct device *dev) 
{

	return 0;

}

static inline int pinctrl_pm_select_init_state(struct device *dev)

{

	return 0;

}

static inline int pinctrl_pm_select_sleep_state(struct device *dev)

{

	return 0;
@@ -143,6 +148,11 @@ static inline int pinctrl_pm_select_default_state(struct device *dev) 
	return 0;

}



static inline int pinctrl_pm_select_init_state(struct device *dev)

{

	return 0;

}



static inline int pinctrl_pm_select_sleep_state(struct device *dev)

{

	return 0;