1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * Copyright (C) 2016 IBM Corp. |
4 | */ |
5 | |
6 | #ifndef PINCTRL_ASPEED |
7 | #define PINCTRL_ASPEED |
8 | |
9 | #include <linux/pinctrl/pinctrl.h> |
10 | #include <linux/pinctrl/pinmux.h> |
11 | #include <linux/pinctrl/pinconf.h> |
12 | #include <linux/pinctrl/pinconf-generic.h> |
13 | #include <linux/regmap.h> |
14 | |
15 | #include "pinmux-aspeed.h" |
16 | |
17 | /** |
18 | * @param The pinconf parameter type |
19 | * @pins The pin range this config struct covers, [low, high] |
20 | * @reg The register housing the configuration bits |
21 | * @mask The mask to select the bits of interest in @reg |
22 | */ |
23 | struct aspeed_pin_config { |
24 | enum pin_config_param param; |
25 | unsigned int pins[2]; |
26 | unsigned int reg; |
27 | u32 mask; |
28 | }; |
29 | |
30 | #define ASPEED_PINCTRL_PIN(name_) \ |
31 | [name_] = { \ |
32 | .number = name_, \ |
33 | .name = #name_, \ |
34 | .drv_data = (void *) &(PIN_SYM(name_)) \ |
35 | } |
36 | |
37 | #define ASPEED_SB_PINCONF(param_, pin0_, pin1_, reg_, bit_) { \ |
38 | .param = param_, \ |
39 | .pins = {pin0_, pin1_}, \ |
40 | .reg = reg_, \ |
41 | .mask = BIT_MASK(bit_) \ |
42 | } |
43 | |
44 | #define ASPEED_PULL_DOWN_PINCONF(pin_, reg_, bit_) \ |
45 | ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_PULL_DOWN, pin_, pin_, reg_, bit_), \ |
46 | ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_DISABLE, pin_, pin_, reg_, bit_) |
47 | |
48 | #define ASPEED_PULL_UP_PINCONF(pin_, reg_, bit_) \ |
49 | ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_PULL_UP, pin_, pin_, reg_, bit_), \ |
50 | ASPEED_SB_PINCONF(PIN_CONFIG_BIAS_DISABLE, pin_, pin_, reg_, bit_) |
51 | /* |
52 | * Aspeed pin configuration description. |
53 | * |
54 | * @param: pinconf configuration parameter |
55 | * @arg: The supported argument for @param, or -1 if any value is supported |
56 | * @val: The register value to write to configure @arg for @param |
57 | * @mask: The bitfield mask for @val |
58 | * |
59 | * The map is to be used in conjunction with the configuration array supplied |
60 | * by the driver implementation. |
61 | */ |
62 | struct aspeed_pin_config_map { |
63 | enum pin_config_param param; |
64 | s32 arg; |
65 | u32 val; |
66 | u32 mask; |
67 | }; |
68 | |
69 | struct aspeed_pinctrl_data { |
70 | struct regmap *scu; |
71 | |
72 | const struct pinctrl_pin_desc *pins; |
73 | const unsigned int npins; |
74 | |
75 | const struct aspeed_pin_config *configs; |
76 | const unsigned int nconfigs; |
77 | |
78 | struct aspeed_pinmux_data pinmux; |
79 | |
80 | const struct aspeed_pin_config_map *confmaps; |
81 | const unsigned int nconfmaps; |
82 | }; |
83 | |
84 | /* Aspeed pinctrl helpers */ |
85 | int aspeed_pinctrl_get_groups_count(struct pinctrl_dev *pctldev); |
86 | const char *aspeed_pinctrl_get_group_name(struct pinctrl_dev *pctldev, |
87 | unsigned int group); |
88 | int aspeed_pinctrl_get_group_pins(struct pinctrl_dev *pctldev, |
89 | unsigned int group, const unsigned int **pins, |
90 | unsigned int *npins); |
91 | void aspeed_pinctrl_pin_dbg_show(struct pinctrl_dev *pctldev, |
92 | struct seq_file *s, unsigned int offset); |
93 | int aspeed_pinmux_get_fn_count(struct pinctrl_dev *pctldev); |
94 | const char *aspeed_pinmux_get_fn_name(struct pinctrl_dev *pctldev, |
95 | unsigned int function); |
96 | int aspeed_pinmux_get_fn_groups(struct pinctrl_dev *pctldev, |
97 | unsigned int function, const char * const **groups, |
98 | unsigned int * const num_groups); |
99 | int aspeed_pinmux_set_mux(struct pinctrl_dev *pctldev, unsigned int function, |
100 | unsigned int group); |
101 | int aspeed_gpio_request_enable(struct pinctrl_dev *pctldev, |
102 | struct pinctrl_gpio_range *range, |
103 | unsigned int offset); |
104 | int aspeed_pinctrl_probe(struct platform_device *pdev, |
105 | struct pinctrl_desc *pdesc, |
106 | struct aspeed_pinctrl_data *pdata); |
107 | int aspeed_pin_config_get(struct pinctrl_dev *pctldev, unsigned int offset, |
108 | unsigned long *config); |
109 | int aspeed_pin_config_set(struct pinctrl_dev *pctldev, unsigned int offset, |
110 | unsigned long *configs, unsigned int num_configs); |
111 | int aspeed_pin_config_group_get(struct pinctrl_dev *pctldev, |
112 | unsigned int selector, |
113 | unsigned long *config); |
114 | int aspeed_pin_config_group_set(struct pinctrl_dev *pctldev, |
115 | unsigned int selector, |
116 | unsigned long *configs, |
117 | unsigned int num_configs); |
118 | |
119 | #endif /* PINCTRL_ASPEED */ |
120 | |