1 /*
2  * Exynos pinctrl driver header.
3  * Copyright (C) 2016 Samsung Electronics
4  * Thomas Abraham <thomas.ab@samsung.com>
5  *
6  * SPDX-License-Identifier:	GPL-2.0+
7  */
8 
9 #ifndef __PINCTRL_EXYNOS_H_
10 #define __PINCTRL_EXYNOS__H_
11 
12 #define PIN_CON		0x00	/* Offset of pin function register */
13 #define PIN_DAT		0x04	/* Offset of pin data register */
14 #define PIN_PUD		0x08	/* Offset of pin pull up/down config register */
15 #define PIN_DRV		0x0C	/* Offset of pin drive strength register */
16 
17 /**
18  * struct samsung_pin_bank_data: represent a controller pin-bank data.
19  * @offset: starting offset of the pin-bank registers.
20  * @nr_pins: number of pins included in this bank.
21  * @name: name to be prefixed for each pin in this pin bank.
22  */
23 struct samsung_pin_bank_data {
24 	u32		offset;
25 	u8		nr_pins;
26 	const char	*name;
27 };
28 
29 #define EXYNOS_PIN_BANK(pins, reg, id)			\
30 	{						\
31 		.offset	= reg,				\
32 		.nr_pins	= pins,			\
33 		.name		= id			\
34 	}
35 
36 /**
37  * struct samsung_pin_ctrl: represent a pin controller.
38  * @pin_banks: list of pin banks included in this controller.
39  * @nr_banks: number of pin banks.
40  */
41 struct samsung_pin_ctrl {
42 	const struct samsung_pin_bank_data *pin_banks;
43 	u32 nr_banks;
44 };
45 
46 /**
47  * struct exynos_pinctrl_priv: exynos pin controller driver private data
48  * @pin_ctrl: pin controller bank information.
49  * @base: base address of the pin controller instance.
50  * @num_banks: number of pin banks included in the pin controller.
51  */
52 struct exynos_pinctrl_priv {
53 	const struct samsung_pin_ctrl *pin_ctrl;
54 	unsigned long base;
55 	int num_banks;
56 };
57 
58 /**
59  * struct exynos_pinctrl_config_data: configuration for a peripheral.
60  * @offset: offset of the config registers in the controller.
61  * @mask: value of the register to be masked with.
62  * @value: new value to be programmed.
63  */
64 struct exynos_pinctrl_config_data {
65 	const unsigned int	offset;
66 	const unsigned int	mask;
67 	const unsigned int	value;
68 };
69 
70 
71 void exynos_pinctrl_setup_peri(struct exynos_pinctrl_config_data *conf,
72 		unsigned int num_conf, unsigned long base);
73 int exynos_pinctrl_set_state(struct udevice *dev,
74 		struct udevice *config);
75 int exynos_pinctrl_probe(struct udevice *dev);
76 
77 #endif /* __PINCTRL_EXYNOS_H_ */
78