1 /* SPDX-License-Identifier: GPL-2.0-only */ 1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* 2 /*
3 * Machine interface for the pinctrl subsystem 3 * Machine interface for the pinctrl subsystem.
4 * 4 *
5 * Copyright (C) 2011 ST-Ericsson SA 5 * Copyright (C) 2011 ST-Ericsson SA
6 * Written on behalf of Linaro for ST-Ericsson 6 * Written on behalf of Linaro for ST-Ericsson
7 * Based on bits of regulator core, gpio core 7 * Based on bits of regulator core, gpio core and clk core
8 * 8 *
9 * Author: Linus Walleij <linus.walleij@linaro 9 * Author: Linus Walleij <linus.walleij@linaro.org>
10 */ 10 */
11 #ifndef __LINUX_PINCTRL_MACHINE_H 11 #ifndef __LINUX_PINCTRL_MACHINE_H
12 #define __LINUX_PINCTRL_MACHINE_H 12 #define __LINUX_PINCTRL_MACHINE_H
13 13
14 #include <linux/array_size.h> !! 14 #include <linux/bug.h>
15 15
16 #include <linux/pinctrl/pinctrl-state.h> 16 #include <linux/pinctrl/pinctrl-state.h>
17 17
18 enum pinctrl_map_type { 18 enum pinctrl_map_type {
19 PIN_MAP_TYPE_INVALID, 19 PIN_MAP_TYPE_INVALID,
20 PIN_MAP_TYPE_DUMMY_STATE, 20 PIN_MAP_TYPE_DUMMY_STATE,
21 PIN_MAP_TYPE_MUX_GROUP, 21 PIN_MAP_TYPE_MUX_GROUP,
22 PIN_MAP_TYPE_CONFIGS_PIN, 22 PIN_MAP_TYPE_CONFIGS_PIN,
23 PIN_MAP_TYPE_CONFIGS_GROUP, 23 PIN_MAP_TYPE_CONFIGS_GROUP,
24 }; 24 };
25 25
26 /** 26 /**
27 * struct pinctrl_map_mux - mapping table cont 27 * struct pinctrl_map_mux - mapping table content for MAP_TYPE_MUX_GROUP
28 * @group: the name of the group whose mux fun 28 * @group: the name of the group whose mux function is to be configured. This
29 * field may be left NULL, and the first 29 * field may be left NULL, and the first applicable group for the function
30 * will be used. 30 * will be used.
31 * @function: the mux function to select for t 31 * @function: the mux function to select for the group
32 */ 32 */
33 struct pinctrl_map_mux { 33 struct pinctrl_map_mux {
34 const char *group; 34 const char *group;
35 const char *function; 35 const char *function;
36 }; 36 };
37 37
38 /** 38 /**
39 * struct pinctrl_map_configs - mapping table 39 * struct pinctrl_map_configs - mapping table content for MAP_TYPE_CONFIGS_*
40 * @group_or_pin: the name of the pin or group 40 * @group_or_pin: the name of the pin or group whose configuration parameters
41 * are to be configured. 41 * are to be configured.
42 * @configs: a pointer to an array of config p 42 * @configs: a pointer to an array of config parameters/values to program into
43 * hardware. Each individual pin controll 43 * hardware. Each individual pin controller defines the format and meaning
44 * of config parameters. 44 * of config parameters.
45 * @num_configs: the number of entries in arra 45 * @num_configs: the number of entries in array @configs
46 */ 46 */
47 struct pinctrl_map_configs { 47 struct pinctrl_map_configs {
48 const char *group_or_pin; 48 const char *group_or_pin;
49 unsigned long *configs; 49 unsigned long *configs;
50 unsigned int num_configs; !! 50 unsigned num_configs;
51 }; 51 };
52 52
53 /** 53 /**
54 * struct pinctrl_map - boards/machines shall 54 * struct pinctrl_map - boards/machines shall provide this map for devices
55 * @dev_name: the name of the device using thi 55 * @dev_name: the name of the device using this specific mapping, the name
56 * must be the same as in your struct dev 56 * must be the same as in your struct device*. If this name is set to the
57 * same name as the pin controllers own d 57 * same name as the pin controllers own dev_name(), the map entry will be
58 * hogged by the driver itself upon regis 58 * hogged by the driver itself upon registration
59 * @name: the name of this specific map entry 59 * @name: the name of this specific map entry for the particular machine.
60 * This is the parameter passed to pinmux 60 * This is the parameter passed to pinmux_lookup_state()
61 * @type: the type of mapping table entry 61 * @type: the type of mapping table entry
62 * @ctrl_dev_name: the name of the device cont 62 * @ctrl_dev_name: the name of the device controlling this specific mapping,
63 * the name must be the same as in your s 63 * the name must be the same as in your struct device*. This field is not
64 * used for PIN_MAP_TYPE_DUMMY_STATE 64 * used for PIN_MAP_TYPE_DUMMY_STATE
65 * @data: Data specific to the mapping type 65 * @data: Data specific to the mapping type
66 */ 66 */
67 struct pinctrl_map { 67 struct pinctrl_map {
68 const char *dev_name; 68 const char *dev_name;
69 const char *name; 69 const char *name;
70 enum pinctrl_map_type type; 70 enum pinctrl_map_type type;
71 const char *ctrl_dev_name; 71 const char *ctrl_dev_name;
72 union { 72 union {
73 struct pinctrl_map_mux mux; 73 struct pinctrl_map_mux mux;
74 struct pinctrl_map_configs con 74 struct pinctrl_map_configs configs;
75 } data; 75 } data;
76 }; 76 };
77 77
78 /* Convenience macros to create mapping table 78 /* Convenience macros to create mapping table entries */
79 79
80 #define PIN_MAP_DUMMY_STATE(dev, state) \ 80 #define PIN_MAP_DUMMY_STATE(dev, state) \
81 { 81 { \
82 .dev_name = dev, 82 .dev_name = dev, \
83 .name = state, 83 .name = state, \
84 .type = PIN_MAP_TYPE_DUMMY_STA 84 .type = PIN_MAP_TYPE_DUMMY_STATE, \
85 } 85 }
86 86
87 #define PIN_MAP_MUX_GROUP(dev, state, pinctrl, 87 #define PIN_MAP_MUX_GROUP(dev, state, pinctrl, grp, func) \
88 { 88 { \
89 .dev_name = dev, 89 .dev_name = dev, \
90 .name = state, 90 .name = state, \
91 .type = PIN_MAP_TYPE_MUX_GROUP 91 .type = PIN_MAP_TYPE_MUX_GROUP, \
92 .ctrl_dev_name = pinctrl, 92 .ctrl_dev_name = pinctrl, \
93 .data.mux = { 93 .data.mux = { \
94 .group = grp, 94 .group = grp, \
95 .function = func, 95 .function = func, \
96 }, 96 }, \
97 } 97 }
98 98
99 #define PIN_MAP_MUX_GROUP_DEFAULT(dev, pinctrl 99 #define PIN_MAP_MUX_GROUP_DEFAULT(dev, pinctrl, grp, func) \
100 PIN_MAP_MUX_GROUP(dev, PINCTRL_STATE_D 100 PIN_MAP_MUX_GROUP(dev, PINCTRL_STATE_DEFAULT, pinctrl, grp, func)
101 101
102 #define PIN_MAP_MUX_GROUP_HOG(dev, state, grp, 102 #define PIN_MAP_MUX_GROUP_HOG(dev, state, grp, func) \
103 PIN_MAP_MUX_GROUP(dev, state, dev, grp 103 PIN_MAP_MUX_GROUP(dev, state, dev, grp, func)
104 104
105 #define PIN_MAP_MUX_GROUP_HOG_DEFAULT(dev, grp 105 #define PIN_MAP_MUX_GROUP_HOG_DEFAULT(dev, grp, func) \
106 PIN_MAP_MUX_GROUP(dev, PINCTRL_STATE_D 106 PIN_MAP_MUX_GROUP(dev, PINCTRL_STATE_DEFAULT, dev, grp, func)
107 107
108 #define PIN_MAP_CONFIGS_PIN(dev, state, pinctr 108 #define PIN_MAP_CONFIGS_PIN(dev, state, pinctrl, pin, cfgs) \
109 { 109 { \
110 .dev_name = dev, 110 .dev_name = dev, \
111 .name = state, 111 .name = state, \
112 .type = PIN_MAP_TYPE_CONFIGS_P 112 .type = PIN_MAP_TYPE_CONFIGS_PIN, \
113 .ctrl_dev_name = pinctrl, 113 .ctrl_dev_name = pinctrl, \
114 .data.configs = { 114 .data.configs = { \
115 .group_or_pin = pin, 115 .group_or_pin = pin, \
116 .configs = cfgs, 116 .configs = cfgs, \
117 .num_configs = ARRAY_S 117 .num_configs = ARRAY_SIZE(cfgs), \
118 }, 118 }, \
119 } 119 }
120 120
121 #define PIN_MAP_CONFIGS_PIN_DEFAULT(dev, pinct 121 #define PIN_MAP_CONFIGS_PIN_DEFAULT(dev, pinctrl, pin, cfgs) \
122 PIN_MAP_CONFIGS_PIN(dev, PINCTRL_STATE 122 PIN_MAP_CONFIGS_PIN(dev, PINCTRL_STATE_DEFAULT, pinctrl, pin, cfgs)
123 123
124 #define PIN_MAP_CONFIGS_PIN_HOG(dev, state, pi 124 #define PIN_MAP_CONFIGS_PIN_HOG(dev, state, pin, cfgs) \
125 PIN_MAP_CONFIGS_PIN(dev, state, dev, p 125 PIN_MAP_CONFIGS_PIN(dev, state, dev, pin, cfgs)
126 126
127 #define PIN_MAP_CONFIGS_PIN_HOG_DEFAULT(dev, p 127 #define PIN_MAP_CONFIGS_PIN_HOG_DEFAULT(dev, pin, cfgs) \
128 PIN_MAP_CONFIGS_PIN(dev, PINCTRL_STATE 128 PIN_MAP_CONFIGS_PIN(dev, PINCTRL_STATE_DEFAULT, dev, pin, cfgs)
129 129
130 #define PIN_MAP_CONFIGS_GROUP(dev, state, pinc 130 #define PIN_MAP_CONFIGS_GROUP(dev, state, pinctrl, grp, cfgs) \
131 { 131 { \
132 .dev_name = dev, 132 .dev_name = dev, \
133 .name = state, 133 .name = state, \
134 .type = PIN_MAP_TYPE_CONFIGS_G 134 .type = PIN_MAP_TYPE_CONFIGS_GROUP, \
135 .ctrl_dev_name = pinctrl, 135 .ctrl_dev_name = pinctrl, \
136 .data.configs = { 136 .data.configs = { \
137 .group_or_pin = grp, 137 .group_or_pin = grp, \
138 .configs = cfgs, 138 .configs = cfgs, \
139 .num_configs = ARRAY_S 139 .num_configs = ARRAY_SIZE(cfgs), \
140 }, 140 }, \
141 } 141 }
142 142
143 #define PIN_MAP_CONFIGS_GROUP_DEFAULT(dev, pin 143 #define PIN_MAP_CONFIGS_GROUP_DEFAULT(dev, pinctrl, grp, cfgs) \
144 PIN_MAP_CONFIGS_GROUP(dev, PINCTRL_STA 144 PIN_MAP_CONFIGS_GROUP(dev, PINCTRL_STATE_DEFAULT, pinctrl, grp, cfgs)
145 145
146 #define PIN_MAP_CONFIGS_GROUP_HOG(dev, state, 146 #define PIN_MAP_CONFIGS_GROUP_HOG(dev, state, grp, cfgs) \
147 PIN_MAP_CONFIGS_GROUP(dev, state, dev, 147 PIN_MAP_CONFIGS_GROUP(dev, state, dev, grp, cfgs)
148 148
149 #define PIN_MAP_CONFIGS_GROUP_HOG_DEFAULT(dev, 149 #define PIN_MAP_CONFIGS_GROUP_HOG_DEFAULT(dev, grp, cfgs) \
150 PIN_MAP_CONFIGS_GROUP(dev, PINCTRL_STA 150 PIN_MAP_CONFIGS_GROUP(dev, PINCTRL_STATE_DEFAULT, dev, grp, cfgs)
151 151
152 struct pinctrl_map; <<
153 <<
154 #ifdef CONFIG_PINCTRL 152 #ifdef CONFIG_PINCTRL
155 153
156 extern int pinctrl_register_mappings(const str 154 extern int pinctrl_register_mappings(const struct pinctrl_map *map,
157 unsigned !! 155 unsigned num_maps);
158 extern void pinctrl_unregister_mappings(const 156 extern void pinctrl_unregister_mappings(const struct pinctrl_map *map);
159 extern void pinctrl_provide_dummies(void); 157 extern void pinctrl_provide_dummies(void);
160 #else 158 #else
161 159
162 static inline int pinctrl_register_mappings(co 160 static inline int pinctrl_register_mappings(const struct pinctrl_map *map,
163 un !! 161 unsigned num_maps)
164 { 162 {
165 return 0; 163 return 0;
166 } 164 }
167 165
168 static inline void pinctrl_unregister_mappings 166 static inline void pinctrl_unregister_mappings(const struct pinctrl_map *map)
169 { 167 {
170 } 168 }
171 169
172 static inline void pinctrl_provide_dummies(voi 170 static inline void pinctrl_provide_dummies(void)
173 { 171 {
174 } 172 }
175 #endif /* !CONFIG_PINCTRL */ 173 #endif /* !CONFIG_PINCTRL */
176 #endif 174 #endif
177 175
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