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