diff options
Diffstat (limited to 'drivers/pinctrl/pinctrl-abx500.h')
-rw-r--r-- | drivers/pinctrl/pinctrl-abx500.h | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-abx500.h b/drivers/pinctrl/pinctrl-abx500.h new file mode 100644 index 000000000000..eeca8f973999 --- /dev/null +++ b/drivers/pinctrl/pinctrl-abx500.h | |||
@@ -0,0 +1,234 @@ | |||
1 | #ifndef PINCTRL_PINCTRL_ABx5O0_H | ||
2 | #define PINCTRL_PINCTRL_ABx500_H | ||
3 | |||
4 | /* Package definitions */ | ||
5 | #define PINCTRL_AB8500 0 | ||
6 | #define PINCTRL_AB8540 1 | ||
7 | #define PINCTRL_AB9540 2 | ||
8 | #define PINCTRL_AB8505 3 | ||
9 | |||
10 | /* pins alternate function */ | ||
11 | enum abx500_pin_func { | ||
12 | ABX500_DEFAULT, | ||
13 | ABX500_ALT_A, | ||
14 | ABX500_ALT_B, | ||
15 | ABX500_ALT_C, | ||
16 | }; | ||
17 | |||
18 | /** | ||
19 | * struct abx500_function - ABx500 pinctrl mux function | ||
20 | * @name: The name of the function, exported to pinctrl core. | ||
21 | * @groups: An array of pin groups that may select this function. | ||
22 | * @ngroups: The number of entries in @groups. | ||
23 | */ | ||
24 | struct abx500_function { | ||
25 | const char *name; | ||
26 | const char * const *groups; | ||
27 | unsigned ngroups; | ||
28 | }; | ||
29 | |||
30 | /** | ||
31 | * struct abx500_pingroup - describes a ABx500 pin group | ||
32 | * @name: the name of this specific pin group | ||
33 | * @pins: an array of discrete physical pins used in this group, taken | ||
34 | * from the driver-local pin enumeration space | ||
35 | * @num_pins: the number of pins in this group array, i.e. the number of | ||
36 | * elements in .pins so we can iterate over that array | ||
37 | * @altsetting: the altsetting to apply to all pins in this group to | ||
38 | * configure them to be used by a function | ||
39 | */ | ||
40 | struct abx500_pingroup { | ||
41 | const char *name; | ||
42 | const unsigned int *pins; | ||
43 | const unsigned npins; | ||
44 | int altsetting; | ||
45 | }; | ||
46 | |||
47 | #define ALTERNATE_FUNCTIONS(pin, sel_bit, alt1, alt2, alta, altb, altc) \ | ||
48 | { \ | ||
49 | .pin_number = pin, \ | ||
50 | .gpiosel_bit = sel_bit, \ | ||
51 | .alt_bit1 = alt1, \ | ||
52 | .alt_bit2 = alt2, \ | ||
53 | .alta_val = alta, \ | ||
54 | .altb_val = altb, \ | ||
55 | .altc_val = altc, \ | ||
56 | } | ||
57 | |||
58 | #define UNUSED -1 | ||
59 | /** | ||
60 | * struct alternate_functions | ||
61 | * @pin_number: The pin number | ||
62 | * @gpiosel_bit: Control bit in GPIOSEL register, | ||
63 | * @alt_bit1: First AlternateFunction bit used to select the | ||
64 | * alternate function | ||
65 | * @alt_bit2: Second AlternateFunction bit used to select the | ||
66 | * alternate function | ||
67 | * | ||
68 | * these 3 following fields are necessary due to none | ||
69 | * coherency on how to select the altA, altB and altC | ||
70 | * function between the ABx500 SOC family when using | ||
71 | * alternatfunc register. | ||
72 | * @alta_val: value to write in alternatfunc to select altA function | ||
73 | * @altb_val: value to write in alternatfunc to select altB function | ||
74 | * @altc_val: value to write in alternatfunc to select altC function | ||
75 | */ | ||
76 | struct alternate_functions { | ||
77 | unsigned pin_number; | ||
78 | s8 gpiosel_bit; | ||
79 | s8 alt_bit1; | ||
80 | s8 alt_bit2; | ||
81 | u8 alta_val; | ||
82 | u8 altb_val; | ||
83 | u8 altc_val; | ||
84 | }; | ||
85 | |||
86 | /** | ||
87 | * struct pullud - specific pull up/down feature | ||
88 | * @first_pin: The pin number of the first pins which support | ||
89 | * specific pull up/down | ||
90 | * @last_pin: The pin number of the last pins | ||
91 | */ | ||
92 | struct pullud { | ||
93 | unsigned first_pin; | ||
94 | unsigned last_pin; | ||
95 | }; | ||
96 | |||
97 | #define GPIO_IRQ_CLUSTER(a, b, c) \ | ||
98 | { \ | ||
99 | .start = a, \ | ||
100 | .end = b, \ | ||
101 | .to_irq = c, \ | ||
102 | } | ||
103 | |||
104 | /** | ||
105 | * struct abx500_gpio_irq_cluster - indicates GPIOs which are interrupt | ||
106 | * capable | ||
107 | * @start: The pin number of the first pin interrupt capable | ||
108 | * @end: The pin number of the last pin interrupt capable | ||
109 | * @to_irq: The ABx500 GPIO's associated IRQs are clustered | ||
110 | * together throughout the interrupt numbers at irregular | ||
111 | * intervals. To solve this quandary, we will place the | ||
112 | * read-in values into the cluster information table | ||
113 | */ | ||
114 | |||
115 | struct abx500_gpio_irq_cluster { | ||
116 | int start; | ||
117 | int end; | ||
118 | int to_irq; | ||
119 | }; | ||
120 | |||
121 | /** | ||
122 | * struct abx500_pinrange - map pin numbers to GPIO offsets | ||
123 | * @offset: offset into the GPIO local numberspace, incidentally | ||
124 | * identical to the offset into the local pin numberspace | ||
125 | * @npins: number of pins to map from both offsets | ||
126 | * @altfunc: altfunc setting to be used to enable GPIO on a pin in | ||
127 | * this range (may vary) | ||
128 | */ | ||
129 | struct abx500_pinrange { | ||
130 | unsigned int offset; | ||
131 | unsigned int npins; | ||
132 | int altfunc; | ||
133 | }; | ||
134 | |||
135 | #define ABX500_PINRANGE(a, b, c) { .offset = a, .npins = b, .altfunc = c } | ||
136 | |||
137 | /** | ||
138 | * struct abx500_pinctrl_soc_data - ABx500 pin controller per-SoC configuration | ||
139 | * @gpio_ranges: An array of GPIO ranges for this SoC | ||
140 | * @gpio_num_ranges: The number of GPIO ranges for this SoC | ||
141 | * @pins: An array describing all pins the pin controller affects. | ||
142 | * All pins which are also GPIOs must be listed first within the | ||
143 | * array, and be numbered identically to the GPIO controller's | ||
144 | * numbering. | ||
145 | * @npins: The number of entries in @pins. | ||
146 | * @functions: The functions supported on this SoC. | ||
147 | * @nfunction: The number of entries in @functions. | ||
148 | * @groups: An array describing all pin groups the pin SoC supports. | ||
149 | * @ngroups: The number of entries in @groups. | ||
150 | * @alternate_functions: array describing pins which supports alternate and | ||
151 | * how to set it. | ||
152 | * @pullud: array describing pins which supports pull up/down | ||
153 | * specific registers. | ||
154 | * @gpio_irq_cluster: An array of GPIO interrupt capable for this SoC | ||
155 | * @ngpio_irq_cluster: The number of GPIO inetrrupt capable for this SoC | ||
156 | * @irq_gpio_rising_offset: Interrupt offset used as base to compute specific | ||
157 | * setting strategy of the rising interrupt line | ||
158 | * @irq_gpio_falling_offset: Interrupt offset used as base to compute specific | ||
159 | * setting strategy of the falling interrupt line | ||
160 | * @irq_gpio_factor: Factor used to compute specific setting strategy of | ||
161 | * the interrupt line | ||
162 | */ | ||
163 | |||
164 | struct abx500_pinctrl_soc_data { | ||
165 | const struct abx500_pinrange *gpio_ranges; | ||
166 | unsigned gpio_num_ranges; | ||
167 | const struct pinctrl_pin_desc *pins; | ||
168 | unsigned npins; | ||
169 | const struct abx500_function *functions; | ||
170 | unsigned nfunctions; | ||
171 | const struct abx500_pingroup *groups; | ||
172 | unsigned ngroups; | ||
173 | struct alternate_functions *alternate_functions; | ||
174 | struct pullud *pullud; | ||
175 | struct abx500_gpio_irq_cluster *gpio_irq_cluster; | ||
176 | unsigned ngpio_irq_cluster; | ||
177 | int irq_gpio_rising_offset; | ||
178 | int irq_gpio_falling_offset; | ||
179 | int irq_gpio_factor; | ||
180 | }; | ||
181 | |||
182 | #ifdef CONFIG_PINCTRL_AB8500 | ||
183 | |||
184 | void abx500_pinctrl_ab8500_init(struct abx500_pinctrl_soc_data **soc); | ||
185 | |||
186 | #else | ||
187 | |||
188 | static inline void | ||
189 | abx500_pinctrl_ab8500_init(struct abx500_pinctrl_soc_data **soc) | ||
190 | { | ||
191 | } | ||
192 | |||
193 | #endif | ||
194 | |||
195 | #ifdef CONFIG_PINCTRL_AB8540 | ||
196 | |||
197 | void abx500_pinctrl_ab8540_init(struct abx500_pinctrl_soc_data **soc); | ||
198 | |||
199 | #else | ||
200 | |||
201 | static inline void | ||
202 | abx500_pinctrl_ab8540_init(struct abx500_pinctrl_soc_data **soc) | ||
203 | { | ||
204 | } | ||
205 | |||
206 | #endif | ||
207 | |||
208 | #ifdef CONFIG_PINCTRL_AB9540 | ||
209 | |||
210 | void abx500_pinctrl_ab9540_init(struct abx500_pinctrl_soc_data **soc); | ||
211 | |||
212 | #else | ||
213 | |||
214 | static inline void | ||
215 | abx500_pinctrl_ab9540_init(struct abx500_pinctrl_soc_data **soc) | ||
216 | { | ||
217 | } | ||
218 | |||
219 | #endif | ||
220 | |||
221 | #ifdef CONFIG_PINCTRL_AB8505 | ||
222 | |||
223 | void abx500_pinctrl_ab8505_init(struct abx500_pinctrl_soc_data **soc); | ||
224 | |||
225 | #else | ||
226 | |||
227 | static inline void | ||
228 | abx500_pinctrl_ab8505_init(struct abx500_pinctrl_soc_data **soc) | ||
229 | { | ||
230 | } | ||
231 | |||
232 | #endif | ||
233 | |||
234 | #endif /* PINCTRL_PINCTRL_ABx500_H */ | ||