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pinctrl: Add pinctrl_pm_select_init_state helper function

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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: Christian Bruel <christian.bruel@foss.st.com>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patch.msgid.link/20250820075411.1178729-3-christian.bruel@foss.st.com
This commit is contained in:
Christian Bruel
2025-08-20 09:54:02 +02:00
committed by Manivannan Sadhasivam
parent 272dad3f84
commit 08383cd479
2 changed files with 23 additions and 0 deletions
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13
drivers/pinctrl/core.c
View File

@@ -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

10
include/linux/pinctrl/consumer.h
View File

@@ -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;