1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) Maxime Coquelin 2015
4  * Copyright (C) STMicroelectronics 2017
5  * Author:  Maxime Coquelin <mcoquelin.stm32@gmail.com>
6  */
7 #ifndef __PINCTRL_STM32_H
8 #define __PINCTRL_STM32_H
9 
10 #include <linux/pinctrl/pinctrl.h>
11 #include <linux/pinctrl/pinconf-generic.h>
12 
13 #define STM32_PIN_NO(x) ((x) << 8)
14 #define STM32_GET_PIN_NO(x) ((x) >> 8)
15 #define STM32_GET_PIN_FUNC(x) ((x) & 0xff)
16 
17 #define STM32_PIN_GPIO		0
18 #define STM32_PIN_AF(x)		((x) + 1)
19 #define STM32_PIN_ANALOG	(STM32_PIN_AF(15) + 1)
20 
21 struct stm32_desc_function {
22 	const char *name;
23 	const unsigned char num;
24 };
25 
26 struct stm32_desc_pin {
27 	struct pinctrl_pin_desc pin;
28 	const struct stm32_desc_function *functions;
29 };
30 
31 #define STM32_PIN(_pin, ...)					\
32 	{							\
33 		.pin = _pin,					\
34 		.functions = (struct stm32_desc_function[]){	\
35 			__VA_ARGS__, { } },			\
36 	}
37 
38 #define STM32_FUNCTION(_num, _name)		\
39 	{							\
40 		.num = _num,					\
41 		.name = _name,					\
42 	}
43 
44 struct stm32_pinctrl_match_data {
45 	const struct stm32_desc_pin *pins;
46 	const unsigned int npins;
47 };
48 
49 struct stm32_gpio_bank;
50 
51 int stm32_pctl_probe(struct platform_device *pdev);
52 void stm32_pmx_get_mode(struct stm32_gpio_bank *bank,
53 			int pin, u32 *mode, u32 *alt);
54 #endif /* __PINCTRL_STM32_H */
55 
56