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pinctrl: stm32: add suspend/resume management

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During power sequence, GPIO hardware registers could be lost if the power
supply is switched off. Each device using pinctrl API is in charge of
managing pins during suspend/resume sequences. But for pins used as gpio or
irq stm32 pinctrl driver has to save the hardware configuration.

Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Alexandre Torgue
2019-05-10 09:42:29 +02:00
committed by Linus Walleij
parent b672a87ae5
commit e2f3cf18c3
2 changed files with 134 additions and 0 deletions
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2
drivers/pinctrl/stm32/pinctrl-stm32.h
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@@ -65,5 +65,7 @@ struct stm32_gpio_bank;
int stm32_pctl_probe(struct platform_device *pdev);
void stm32_pmx_get_mode(struct stm32_gpio_bank *bank,
int pin, u32 *mode, u32 *alt);
int stm32_pinctrl_resume(struct device *dev);
#endif /* __PINCTRL_STM32_H */