1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
4  * Copyright (c) 2020 Linaro Ltd.
5  */
6 #ifndef __PINCTRL_LPASS_LPI_H__
7 #define __PINCTRL_LPASS_LPI_H__
8 
9 #include <linux/bitops.h>
10 #include <linux/bitfield.h>
11 #include "../core.h"
12 
13 #define LPI_SLEW_RATE_CTL_REG	0xa000
14 #define LPI_TLMM_REG_OFFSET		0x1000
15 #define LPI_SLEW_RATE_MAX		0x03
16 #define LPI_SLEW_BITS_SIZE		0x02
17 #define LPI_SLEW_RATE_MASK		GENMASK(1, 0)
18 #define LPI_GPIO_CFG_REG		0x00
19 #define LPI_GPIO_PULL_MASK		GENMASK(1, 0)
20 #define LPI_GPIO_FUNCTION_MASK		GENMASK(5, 2)
21 #define LPI_GPIO_OUT_STRENGTH_MASK	GENMASK(8, 6)
22 #define LPI_GPIO_OE_MASK		BIT(9)
23 #define LPI_GPIO_VALUE_REG		0x04
24 #define LPI_GPIO_VALUE_IN_MASK		BIT(0)
25 #define LPI_GPIO_VALUE_OUT_MASK		BIT(1)
26 
27 #define LPI_GPIO_BIAS_DISABLE		0x0
28 #define LPI_GPIO_PULL_DOWN		0x1
29 #define LPI_GPIO_KEEPER			0x2
30 #define LPI_GPIO_PULL_UP		0x3
31 #define LPI_GPIO_DS_TO_VAL(v)		(v / 2 - 1)
32 #define LPI_NO_SLEW				-1
33 
34 #define LPI_FUNCTION(fname)			                \
35 	[LPI_MUX_##fname] = {		                \
36 		.name = #fname,				\
37 		.groups = fname##_groups,               \
38 		.ngroups = ARRAY_SIZE(fname##_groups),	\
39 	}
40 
41 #define LPI_PINGROUP(id, soff, f1, f2, f3, f4)		\
42 	{						\
43 		.group.name = "gpio" #id,			\
44 		.group.pins = gpio##id##_pins,		\
45 		.pin = id,				\
46 		.slew_offset = soff,			\
47 		.group.num_pins = ARRAY_SIZE(gpio##id##_pins),	\
48 		.funcs = (int[]){			\
49 			LPI_MUX_gpio,			\
50 			LPI_MUX_##f1,			\
51 			LPI_MUX_##f2,			\
52 			LPI_MUX_##f3,			\
53 			LPI_MUX_##f4,			\
54 		},					\
55 		.nfuncs = 5,				\
56 	}
57 
58 struct lpi_pingroup {
59 	struct group_desc group;
60 	unsigned int pin;
61 	/* Bit offset in slew register for SoundWire pins only */
62 	int slew_offset;
63 	unsigned int *funcs;
64 	unsigned int nfuncs;
65 };
66 
67 struct lpi_function {
68 	const char *name;
69 	const char * const *groups;
70 	unsigned int ngroups;
71 };
72 
73 struct lpi_pinctrl_variant_data {
74 	const struct pinctrl_pin_desc *pins;
75 	int npins;
76 	const struct lpi_pingroup *groups;
77 	int ngroups;
78 	const struct lpi_function *functions;
79 	int nfunctions;
80 };
81 
82 int lpi_pinctrl_probe(struct platform_device *pdev);
83 int lpi_pinctrl_remove(struct platform_device *pdev);
84 
85 #endif /*__PINCTRL_LPASS_LPI_H__*/
86