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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>
72 lines
1.6 KiB
C
72 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) Maxime Coquelin 2015
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* Copyright (C) STMicroelectronics 2017
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* Author: Maxime Coquelin <mcoquelin.stm32@gmail.com>
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*/
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#ifndef __PINCTRL_STM32_H
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#define __PINCTRL_STM32_H
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#include <linux/pinctrl/pinctrl.h>
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#include <linux/pinctrl/pinconf-generic.h>
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#define STM32_PIN_NO(x) ((x) << 8)
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#define STM32_GET_PIN_NO(x) ((x) >> 8)
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#define STM32_GET_PIN_FUNC(x) ((x) & 0xff)
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#define STM32_PIN_GPIO 0
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#define STM32_PIN_AF(x) ((x) + 1)
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#define STM32_PIN_ANALOG (STM32_PIN_AF(15) + 1)
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/* package information */
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#define STM32MP_PKG_AA BIT(0)
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#define STM32MP_PKG_AB BIT(1)
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#define STM32MP_PKG_AC BIT(2)
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#define STM32MP_PKG_AD BIT(3)
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struct stm32_desc_function {
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const char *name;
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const unsigned char num;
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};
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struct stm32_desc_pin {
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struct pinctrl_pin_desc pin;
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const struct stm32_desc_function *functions;
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const unsigned int pkg;
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};
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#define STM32_PIN(_pin, ...) \
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{ \
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.pin = _pin, \
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.functions = (struct stm32_desc_function[]){ \
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__VA_ARGS__, { } }, \
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}
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#define STM32_PIN_PKG(_pin, _pkg, ...) \
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{ \
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.pin = _pin, \
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.pkg = _pkg, \
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.functions = (struct stm32_desc_function[]){ \
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__VA_ARGS__, { } }, \
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}
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#define STM32_FUNCTION(_num, _name) \
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{ \
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.num = _num, \
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.name = _name, \
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}
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struct stm32_pinctrl_match_data {
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const struct stm32_desc_pin *pins;
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const unsigned int npins;
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};
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struct stm32_gpio_bank;
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int stm32_pctl_probe(struct platform_device *pdev);
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void stm32_pmx_get_mode(struct stm32_gpio_bank *bank,
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int pin, u32 *mode, u32 *alt);
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int stm32_pinctrl_resume(struct device *dev);
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#endif /* __PINCTRL_STM32_H */
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