1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Pinctrl driver for the Wondermedia SoC's
4 *
5 * Copyright (c) 2013 Tony Prisk <linux@prisktech.co.nz>
6 */
7
8#include <linux/gpio/driver.h>
9
10/* VT8500 has no enable register in the extgpio bank. */
11#define NO_REG	0xFFFF
12
13#define WMT_PINCTRL_BANK(__en, __dir, __dout, __din, __pen, __pcfg)	\
14{									\
15	.reg_en		= __en,						\
16	.reg_dir	= __dir,					\
17	.reg_data_out	= __dout,					\
18	.reg_data_in	= __din,					\
19	.reg_pull_en	= __pen,					\
20	.reg_pull_cfg	= __pcfg,					\
21}
22
23/* Encode/decode the bank/bit pairs into a pin value */
24#define WMT_PIN(__bank, __offset)	((__bank << 5) | __offset)
25#define WMT_BANK_FROM_PIN(__pin)	(__pin >> 5)
26#define WMT_BIT_FROM_PIN(__pin)		(__pin & 0x1f)
27
28#define WMT_GROUP(__name, __data)		\
29{						\
30	.name = __name,				\
31	.pins = __data,				\
32	.npins = ARRAY_SIZE(__data),		\
33}
34
35struct wmt_pinctrl_bank_registers {
36	u32	reg_en;
37	u32	reg_dir;
38	u32	reg_data_out;
39	u32	reg_data_in;
40
41	u32	reg_pull_en;
42	u32	reg_pull_cfg;
43};
44
45struct wmt_pinctrl_group {
46	const char *name;
47	const unsigned int *pins;
48	const unsigned npins;
49};
50
51struct wmt_pinctrl_data {
52	struct device *dev;
53	struct pinctrl_dev *pctl_dev;
54
55	/* must be initialized before calling wmt_pinctrl_probe */
56	void __iomem *base;
57	const struct wmt_pinctrl_bank_registers *banks;
58	const struct pinctrl_pin_desc *pins;
59	const char * const *groups;
60
61	u32 nbanks;
62	u32 npins;
63	u32 ngroups;
64
65	struct gpio_chip gpio_chip;
66	struct pinctrl_gpio_range gpio_range;
67};
68
69int wmt_pinctrl_probe(struct platform_device *pdev,
70		      struct wmt_pinctrl_data *data);
71