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 /*  package information */
22 #define STM32MP_PKG_AA		BIT(0)
23 #define STM32MP_PKG_AB		BIT(1)
24 #define STM32MP_PKG_AC		BIT(2)
25 #define STM32MP_PKG_AD		BIT(3)
26 
27 struct stm32_desc_function {
28 	const char *name;
29 	const unsigned char num;
30 };
31 
32 struct stm32_desc_pin {
33 	struct pinctrl_pin_desc pin;
34 	const struct stm32_desc_function *functions;
35 	const unsigned int pkg;
36 };
37 
38 #define STM32_PIN(_pin, ...)					\
39 	{							\
40 		.pin = _pin,					\
41 		.functions = (struct stm32_desc_function[]){	\
42 			__VA_ARGS__, { } },			\
43 	}
44 
45 #define STM32_PIN_PKG(_pin, _pkg, ...)					\
46 	{							\
47 		.pin = _pin,					\
48 		.pkg  = _pkg,				\
49 		.functions = (struct stm32_desc_function[]){	\
50 			__VA_ARGS__, { } },			\
51 	}
52 #define STM32_FUNCTION(_num, _name)		\
53 	{							\
54 		.num = _num,					\
55 		.name = _name,					\
56 	}
57 
58 struct stm32_pinctrl_match_data {
59 	const struct stm32_desc_pin *pins;
60 	const unsigned int npins;
61 };
62 
63 struct stm32_gpio_bank;
64 
65 int stm32_pctl_probe(struct platform_device *pdev);
66 void stm32_pmx_get_mode(struct stm32_gpio_bank *bank,
67 			int pin, u32 *mode, u32 *alt);
68 int stm32_pinctrl_resume(struct device *dev);
69 
70 #endif /* __PINCTRL_STM32_H */
71 
72