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1 | /* | |
2 | * Copyright (C) 2015-2017 Socionext Inc. | |
3 | * Author: Masahiro Yamada <yamada.masahiro@socionext.com> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | */ | |
15 | ||
16 | #ifndef __PINCTRL_UNIPHIER_H__ | |
17 | #define __PINCTRL_UNIPHIER_H__ | |
18 | ||
19 | #include <linux/bitops.h> | |
20 | #include <linux/bug.h> | |
21 | #include <linux/kernel.h> | |
22 | #include <linux/types.h> | |
23 | ||
24 | struct platform_device; | |
25 | ||
26 | /* input enable control register bit */ | |
27 | #define UNIPHIER_PIN_IECTRL_SHIFT 0 | |
28 | #define UNIPHIER_PIN_IECTRL_BITS 8 | |
29 | #define UNIPHIER_PIN_IECTRL_MASK ((1UL << (UNIPHIER_PIN_IECTRL_BITS)) \ | |
30 | - 1) | |
31 | ||
32 | /* drive strength control register number */ | |
33 | #define UNIPHIER_PIN_DRVCTRL_SHIFT ((UNIPHIER_PIN_IECTRL_SHIFT) + \ | |
34 | (UNIPHIER_PIN_IECTRL_BITS)) | |
35 | #define UNIPHIER_PIN_DRVCTRL_BITS 9 | |
36 | #define UNIPHIER_PIN_DRVCTRL_MASK ((1UL << (UNIPHIER_PIN_DRVCTRL_BITS)) \ | |
37 | - 1) | |
38 | ||
39 | /* drive control type */ | |
40 | #define UNIPHIER_PIN_DRV_TYPE_SHIFT ((UNIPHIER_PIN_DRVCTRL_SHIFT) + \ | |
41 | (UNIPHIER_PIN_DRVCTRL_BITS)) | |
42 | #define UNIPHIER_PIN_DRV_TYPE_BITS 3 | |
43 | #define UNIPHIER_PIN_DRV_TYPE_MASK ((1UL << (UNIPHIER_PIN_DRV_TYPE_BITS)) \ | |
44 | - 1) | |
45 | ||
46 | /* pull-up / pull-down register number */ | |
47 | #define UNIPHIER_PIN_PUPDCTRL_SHIFT ((UNIPHIER_PIN_DRV_TYPE_SHIFT) + \ | |
48 | (UNIPHIER_PIN_DRV_TYPE_BITS)) | |
49 | #define UNIPHIER_PIN_PUPDCTRL_BITS 9 | |
50 | #define UNIPHIER_PIN_PUPDCTRL_MASK ((1UL << (UNIPHIER_PIN_PUPDCTRL_BITS))\ | |
51 | - 1) | |
52 | ||
53 | /* direction of pull register */ | |
54 | #define UNIPHIER_PIN_PULL_DIR_SHIFT ((UNIPHIER_PIN_PUPDCTRL_SHIFT) + \ | |
55 | (UNIPHIER_PIN_PUPDCTRL_BITS)) | |
56 | #define UNIPHIER_PIN_PULL_DIR_BITS 3 | |
57 | #define UNIPHIER_PIN_PULL_DIR_MASK ((1UL << (UNIPHIER_PIN_PULL_DIR_BITS))\ | |
58 | - 1) | |
59 | ||
60 | #if UNIPHIER_PIN_PULL_DIR_SHIFT + UNIPHIER_PIN_PULL_DIR_BITS > BITS_PER_LONG | |
61 | #error "unable to pack pin attributes." | |
62 | #endif | |
63 | ||
64 | #define UNIPHIER_PIN_IECTRL_NONE (UNIPHIER_PIN_IECTRL_MASK) | |
65 | ||
66 | /* drive control type */ | |
67 | enum uniphier_pin_drv_type { | |
68 | UNIPHIER_PIN_DRV_1BIT, /* 2 level control: 4/8 mA */ | |
69 | UNIPHIER_PIN_DRV_2BIT, /* 4 level control: 8/12/16/20 mA */ | |
70 | UNIPHIER_PIN_DRV_3BIT, /* 8 level control: 4/5/7/9/11/12/14/16 mA */ | |
71 | UNIPHIER_PIN_DRV_FIXED4, /* fixed to 4mA */ | |
72 | UNIPHIER_PIN_DRV_FIXED5, /* fixed to 5mA */ | |
73 | UNIPHIER_PIN_DRV_FIXED8, /* fixed to 8mA */ | |
74 | UNIPHIER_PIN_DRV_NONE, /* no support (input only pin) */ | |
75 | }; | |
76 | ||
77 | /* direction of pull register (no pin supports bi-directional pull biasing) */ | |
78 | enum uniphier_pin_pull_dir { | |
79 | UNIPHIER_PIN_PULL_UP, /* pull-up or disabled */ | |
80 | UNIPHIER_PIN_PULL_DOWN, /* pull-down or disabled */ | |
81 | UNIPHIER_PIN_PULL_UP_FIXED, /* always pull-up */ | |
82 | UNIPHIER_PIN_PULL_DOWN_FIXED, /* always pull-down */ | |
83 | UNIPHIER_PIN_PULL_NONE, /* no pull register */ | |
84 | }; | |
85 | ||
86 | #define UNIPHIER_PIN_IECTRL(x) \ | |
87 | (((x) & (UNIPHIER_PIN_IECTRL_MASK)) << (UNIPHIER_PIN_IECTRL_SHIFT)) | |
88 | #define UNIPHIER_PIN_DRVCTRL(x) \ | |
89 | (((x) & (UNIPHIER_PIN_DRVCTRL_MASK)) << (UNIPHIER_PIN_DRVCTRL_SHIFT)) | |
90 | #define UNIPHIER_PIN_DRV_TYPE(x) \ | |
91 | (((x) & (UNIPHIER_PIN_DRV_TYPE_MASK)) << (UNIPHIER_PIN_DRV_TYPE_SHIFT)) | |
92 | #define UNIPHIER_PIN_PUPDCTRL(x) \ | |
93 | (((x) & (UNIPHIER_PIN_PUPDCTRL_MASK)) << (UNIPHIER_PIN_PUPDCTRL_SHIFT)) | |
94 | #define UNIPHIER_PIN_PULL_DIR(x) \ | |
95 | (((x) & (UNIPHIER_PIN_PULL_DIR_MASK)) << (UNIPHIER_PIN_PULL_DIR_SHIFT)) | |
96 | ||
97 | #define UNIPHIER_PIN_ATTR_PACKED(iectrl, drvctrl, drv_type, pupdctrl, pull_dir)\ | |
98 | (UNIPHIER_PIN_IECTRL(iectrl) | \ | |
99 | UNIPHIER_PIN_DRVCTRL(drvctrl) | \ | |
100 | UNIPHIER_PIN_DRV_TYPE(drv_type) | \ | |
101 | UNIPHIER_PIN_PUPDCTRL(pupdctrl) | \ | |
102 | UNIPHIER_PIN_PULL_DIR(pull_dir)) | |
103 | ||
104 | static inline unsigned int uniphier_pin_get_iectrl(void *drv_data) | |
105 | { | |
106 | return ((unsigned long)drv_data >> UNIPHIER_PIN_IECTRL_SHIFT) & | |
107 | UNIPHIER_PIN_IECTRL_MASK; | |
108 | } | |
109 | ||
110 | static inline unsigned int uniphier_pin_get_drvctrl(void *drv_data) | |
111 | { | |
112 | return ((unsigned long)drv_data >> UNIPHIER_PIN_DRVCTRL_SHIFT) & | |
113 | UNIPHIER_PIN_DRVCTRL_MASK; | |
114 | } | |
115 | ||
116 | static inline unsigned int uniphier_pin_get_drv_type(void *drv_data) | |
117 | { | |
118 | return ((unsigned long)drv_data >> UNIPHIER_PIN_DRV_TYPE_SHIFT) & | |
119 | UNIPHIER_PIN_DRV_TYPE_MASK; | |
120 | } | |
121 | ||
122 | static inline unsigned int uniphier_pin_get_pupdctrl(void *drv_data) | |
123 | { | |
124 | return ((unsigned long)drv_data >> UNIPHIER_PIN_PUPDCTRL_SHIFT) & | |
125 | UNIPHIER_PIN_PUPDCTRL_MASK; | |
126 | } | |
127 | ||
128 | static inline unsigned int uniphier_pin_get_pull_dir(void *drv_data) | |
129 | { | |
130 | return ((unsigned long)drv_data >> UNIPHIER_PIN_PULL_DIR_SHIFT) & | |
131 | UNIPHIER_PIN_PULL_DIR_MASK; | |
132 | } | |
133 | ||
134 | enum uniphier_pinmux_gpio_range_type { | |
135 | UNIPHIER_PINMUX_GPIO_RANGE_PORT, | |
136 | UNIPHIER_PINMUX_GPIO_RANGE_IRQ, | |
137 | UNIPHIER_PINMUX_GPIO_RANGE_NONE, | |
138 | }; | |
139 | ||
140 | struct uniphier_pinctrl_group { | |
141 | const char *name; | |
142 | const unsigned *pins; | |
143 | unsigned num_pins; | |
144 | const int *muxvals; | |
145 | enum uniphier_pinmux_gpio_range_type range_type; | |
146 | }; | |
147 | ||
148 | struct uniphier_pinmux_function { | |
149 | const char *name; | |
150 | const char * const *groups; | |
151 | unsigned num_groups; | |
152 | }; | |
153 | ||
154 | struct uniphier_pinctrl_socdata { | |
155 | const struct pinctrl_pin_desc *pins; | |
156 | unsigned int npins; | |
157 | const struct uniphier_pinctrl_group *groups; | |
158 | int groups_count; | |
159 | const struct uniphier_pinmux_function *functions; | |
160 | int functions_count; | |
161 | unsigned int caps; | |
162 | #define UNIPHIER_PINCTRL_CAPS_PERPIN_IECTRL BIT(1) | |
163 | #define UNIPHIER_PINCTRL_CAPS_DBGMUX_SEPARATE BIT(0) | |
164 | }; | |
165 | ||
166 | #define UNIPHIER_PINCTRL_PIN(a, b, c, d, e, f, g) \ | |
167 | { \ | |
168 | .number = a, \ | |
169 | .name = b, \ | |
170 | .drv_data = (void *)UNIPHIER_PIN_ATTR_PACKED(c, d, e, f, g), \ | |
171 | } | |
172 | ||
173 | #define __UNIPHIER_PINCTRL_GROUP(grp, type) \ | |
174 | { \ | |
175 | .name = #grp, \ | |
176 | .pins = grp##_pins, \ | |
177 | .num_pins = ARRAY_SIZE(grp##_pins), \ | |
178 | .muxvals = grp##_muxvals + \ | |
179 | BUILD_BUG_ON_ZERO(ARRAY_SIZE(grp##_pins) != \ | |
180 | ARRAY_SIZE(grp##_muxvals)), \ | |
181 | .range_type = type, \ | |
182 | } | |
183 | ||
184 | #define UNIPHIER_PINCTRL_GROUP(grp) \ | |
185 | __UNIPHIER_PINCTRL_GROUP(grp, UNIPHIER_PINMUX_GPIO_RANGE_NONE) | |
186 | ||
187 | #define UNIPHIER_PINCTRL_GROUP_GPIO_RANGE_PORT(grp) \ | |
188 | __UNIPHIER_PINCTRL_GROUP(grp, UNIPHIER_PINMUX_GPIO_RANGE_PORT) | |
189 | ||
190 | #define UNIPHIER_PINCTRL_GROUP_GPIO_RANGE_IRQ(grp) \ | |
191 | __UNIPHIER_PINCTRL_GROUP(grp, UNIPHIER_PINMUX_GPIO_RANGE_IRQ) | |
192 | ||
193 | #define UNIPHIER_PINCTRL_GROUP_SINGLE(grp, array, ofst) \ | |
194 | { \ | |
195 | .name = #grp, \ | |
196 | .pins = array##_pins + ofst, \ | |
197 | .num_pins = 1, \ | |
198 | .muxvals = array##_muxvals + ofst, \ | |
199 | } | |
200 | ||
201 | #define UNIPHIER_PINMUX_FUNCTION(func) \ | |
202 | { \ | |
203 | .name = #func, \ | |
204 | .groups = func##_groups, \ | |
205 | .num_groups = ARRAY_SIZE(func##_groups), \ | |
206 | } | |
207 | ||
208 | int uniphier_pinctrl_probe(struct platform_device *pdev, | |
209 | struct uniphier_pinctrl_socdata *socdata); | |
210 | ||
211 | #endif /* __PINCTRL_UNIPHIER_H__ */ |