1 /*
2  * IMX pinmux core definitions
3  *
4  * Copyright (C) 2012 Freescale Semiconductor, Inc.
5  * Copyright (C) 2012 Linaro Ltd.
6  *
7  * Author: Dong Aisheng <dong.aisheng@linaro.org>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  */
14 
15 #ifndef __DRIVERS_PINCTRL_IMX_H
16 #define __DRIVERS_PINCTRL_IMX_H
17 
18 struct platform_device;
19 
20 /**
21  * struct imx_pin_group - describes a single i.MX pin
22  * @pin: the pin_id of this pin
23  * @mux_mode: the mux mode for this pin.
24  * @input_reg: the select input register offset for this pin if any
25  *	0 if no select input setting needed.
26  * @input_val: the select input value for this pin.
27  * @configs: the config for this pin.
28  */
29 struct imx_pin {
30 	unsigned int pin;
31 	unsigned int mux_mode;
32 	u16 input_reg;
33 	unsigned int input_val;
34 	unsigned long config;
35 };
36 
37 /**
38  * struct imx_pin_group - describes an IMX pin group
39  * @name: the name of this specific pin group
40  * @npins: the number of pins in this group array, i.e. the number of
41  *	elements in .pins so we can iterate over that array
42  * @pin_ids: array of pin_ids. pinctrl forces us to maintain such an array
43  * @pins: array of pins
44  */
45 struct imx_pin_group {
46 	const char *name;
47 	unsigned npins;
48 	unsigned int *pin_ids;
49 	struct imx_pin *pins;
50 };
51 
52 /**
53  * struct imx_pmx_func - describes IMX pinmux functions
54  * @name: the name of this specific function
55  * @groups: corresponding pin groups
56  * @num_groups: the number of groups
57  */
58 struct imx_pmx_func {
59 	const char *name;
60 	const char **groups;
61 	unsigned num_groups;
62 };
63 
64 /**
65  * struct imx_pin_reg - describe a pin reg map
66  * @mux_reg: mux register offset
67  * @conf_reg: config register offset
68  */
69 struct imx_pin_reg {
70 	s16 mux_reg;
71 	s16 conf_reg;
72 };
73 
74 struct imx_pinctrl_soc_info {
75 	struct device *dev;
76 	const struct pinctrl_pin_desc *pins;
77 	unsigned int npins;
78 	struct imx_pin_reg *pin_regs;
79 	struct imx_pin_group *groups;
80 	unsigned int ngroups;
81 	struct imx_pmx_func *functions;
82 	unsigned int nfunctions;
83 	unsigned int flags;
84 };
85 
86 #define SHARE_MUX_CONF_REG	0x1
87 
88 #define NO_MUX		0x0
89 #define NO_PAD		0x0
90 
91 #define IMX_PINCTRL_PIN(pin) PINCTRL_PIN(pin, #pin)
92 
93 #define PAD_CTL_MASK(len)	((1 << len) - 1)
94 #define IMX_MUX_MASK	0x7
95 #define IOMUXC_CONFIG_SION	(0x1 << 4)
96 
97 int imx_pinctrl_probe(struct platform_device *pdev,
98 			struct imx_pinctrl_soc_info *info);
99 int imx_pinctrl_remove(struct platform_device *pdev);
100 #endif /* __DRIVERS_PINCTRL_IMX_H */
101