1 /*
2 * Copyright 2006-2009 Analog Devices Inc.
3 *
4 * Licensed under the GPL-2 or later.
5 */
6
7 #ifndef __ARCH_BLACKFIN_GPIO_H__
8 #define __ARCH_BLACKFIN_GPIO_H__
9
10 #define gpio_bank(x) ((x) >> 4)
11 #define gpio_bit(x) (1<<((x) & 0xF))
12 #define gpio_sub_n(x) ((x) & 0xF)
13
14 #define GPIO_BANKSIZE 16
15 #define GPIO_BANK_NUM DIV_ROUND_UP(MAX_BLACKFIN_GPIOS, GPIO_BANKSIZE)
16
17 #include <mach/gpio.h>
18
19 #define GPIO_0 0
20 #define GPIO_1 1
21 #define GPIO_2 2
22 #define GPIO_3 3
23 #define GPIO_4 4
24 #define GPIO_5 5
25 #define GPIO_6 6
26 #define GPIO_7 7
27 #define GPIO_8 8
28 #define GPIO_9 9
29 #define GPIO_10 10
30 #define GPIO_11 11
31 #define GPIO_12 12
32 #define GPIO_13 13
33 #define GPIO_14 14
34 #define GPIO_15 15
35 #define GPIO_16 16
36 #define GPIO_17 17
37 #define GPIO_18 18
38 #define GPIO_19 19
39 #define GPIO_20 20
40 #define GPIO_21 21
41 #define GPIO_22 22
42 #define GPIO_23 23
43 #define GPIO_24 24
44 #define GPIO_25 25
45 #define GPIO_26 26
46 #define GPIO_27 27
47 #define GPIO_28 28
48 #define GPIO_29 29
49 #define GPIO_30 30
50 #define GPIO_31 31
51 #define GPIO_32 32
52 #define GPIO_33 33
53 #define GPIO_34 34
54 #define GPIO_35 35
55 #define GPIO_36 36
56 #define GPIO_37 37
57 #define GPIO_38 38
58 #define GPIO_39 39
59 #define GPIO_40 40
60 #define GPIO_41 41
61 #define GPIO_42 42
62 #define GPIO_43 43
63 #define GPIO_44 44
64 #define GPIO_45 45
65 #define GPIO_46 46
66 #define GPIO_47 47
67
68 #define PERIPHERAL_USAGE 1
69 #define GPIO_USAGE 0
70
71 #ifndef __ASSEMBLY__
72
73 #include <linux/compiler.h>
74
75 /***********************************************************
76 *
77 * FUNCTIONS: Blackfin General Purpose Ports Access Functions
78 *
79 * INPUTS/OUTPUTS:
80 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
81 *
82 *
83 * DESCRIPTION: These functions abstract direct register access
84 * to Blackfin processor General Purpose
85 * Ports Regsiters
86 *
87 * CAUTION: These functions do not belong to the GPIO Driver API
88 *************************************************************
89 * MODIFICATION HISTORY :
90 **************************************************************/
91
92 #ifndef CONFIG_BF54x
93 void set_gpio_dir(unsigned, unsigned short);
94 void set_gpio_inen(unsigned, unsigned short);
95 void set_gpio_polar(unsigned, unsigned short);
96 void set_gpio_edge(unsigned, unsigned short);
97 void set_gpio_both(unsigned, unsigned short);
98 void set_gpio_data(unsigned, unsigned short);
99 void set_gpio_maska(unsigned, unsigned short);
100 void set_gpio_maskb(unsigned, unsigned short);
101 void set_gpio_toggle(unsigned);
102 void set_gpiop_dir(unsigned, unsigned short);
103 void set_gpiop_inen(unsigned, unsigned short);
104 void set_gpiop_polar(unsigned, unsigned short);
105 void set_gpiop_edge(unsigned, unsigned short);
106 void set_gpiop_both(unsigned, unsigned short);
107 void set_gpiop_data(unsigned, unsigned short);
108 void set_gpiop_maska(unsigned, unsigned short);
109 void set_gpiop_maskb(unsigned, unsigned short);
110 unsigned short get_gpio_dir(unsigned);
111 unsigned short get_gpio_inen(unsigned);
112 unsigned short get_gpio_polar(unsigned);
113 unsigned short get_gpio_edge(unsigned);
114 unsigned short get_gpio_both(unsigned);
115 unsigned short get_gpio_maska(unsigned);
116 unsigned short get_gpio_maskb(unsigned);
117 unsigned short get_gpio_data(unsigned);
118 unsigned short get_gpiop_dir(unsigned);
119 unsigned short get_gpiop_inen(unsigned);
120 unsigned short get_gpiop_polar(unsigned);
121 unsigned short get_gpiop_edge(unsigned);
122 unsigned short get_gpiop_both(unsigned);
123 unsigned short get_gpiop_maska(unsigned);
124 unsigned short get_gpiop_maskb(unsigned);
125 unsigned short get_gpiop_data(unsigned);
126
127 struct gpio_port_t {
128 unsigned short data;
129 unsigned short dummy1;
130 unsigned short data_clear;
131 unsigned short dummy2;
132 unsigned short data_set;
133 unsigned short dummy3;
134 unsigned short toggle;
135 unsigned short dummy4;
136 unsigned short maska;
137 unsigned short dummy5;
138 unsigned short maska_clear;
139 unsigned short dummy6;
140 unsigned short maska_set;
141 unsigned short dummy7;
142 unsigned short maska_toggle;
143 unsigned short dummy8;
144 unsigned short maskb;
145 unsigned short dummy9;
146 unsigned short maskb_clear;
147 unsigned short dummy10;
148 unsigned short maskb_set;
149 unsigned short dummy11;
150 unsigned short maskb_toggle;
151 unsigned short dummy12;
152 unsigned short dir;
153 unsigned short dummy13;
154 unsigned short polar;
155 unsigned short dummy14;
156 unsigned short edge;
157 unsigned short dummy15;
158 unsigned short both;
159 unsigned short dummy16;
160 unsigned short inen;
161 };
162 #endif
163
164 #ifdef BFIN_SPECIAL_GPIO_BANKS
165 void bfin_special_gpio_free(unsigned gpio);
166 int bfin_special_gpio_request(unsigned gpio, const char *label);
167 #endif
168
169 #ifdef CONFIG_PM
170 int bfin_pm_standby_ctrl(unsigned ctrl);
171
bfin_pm_standby_setup(void)172 static inline int bfin_pm_standby_setup(void)
173 {
174 return bfin_pm_standby_ctrl(1);
175 }
176
bfin_pm_standby_restore(void)177 static inline void bfin_pm_standby_restore(void)
178 {
179 bfin_pm_standby_ctrl(0);
180 }
181
182 void bfin_gpio_pm_hibernate_restore(void);
183 void bfin_gpio_pm_hibernate_suspend(void);
184
185 #ifndef CONFIG_BF54x
186 int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
187
188 struct gpio_port_s {
189 unsigned short data;
190 unsigned short maska;
191 unsigned short maskb;
192 unsigned short dir;
193 unsigned short polar;
194 unsigned short edge;
195 unsigned short both;
196 unsigned short inen;
197
198 unsigned short fer;
199 unsigned short reserved;
200 unsigned short mux;
201 };
202 #endif /*CONFIG_BF54x*/
203 #endif /*CONFIG_PM*/
204 /***********************************************************
205 *
206 * FUNCTIONS: Blackfin GPIO Driver
207 *
208 * INPUTS/OUTPUTS:
209 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
210 *
211 *
212 * DESCRIPTION: Blackfin GPIO Driver API
213 *
214 * CAUTION:
215 *************************************************************
216 * MODIFICATION HISTORY :
217 **************************************************************/
218
219 int bfin_gpio_request(unsigned gpio, const char *label);
220 void bfin_gpio_free(unsigned gpio);
221 int bfin_gpio_irq_request(unsigned gpio, const char *label);
222 void bfin_gpio_irq_free(unsigned gpio);
223 int bfin_gpio_direction_input(unsigned gpio);
224 int bfin_gpio_direction_output(unsigned gpio, int value);
225 int bfin_gpio_get_value(unsigned gpio);
226 void bfin_gpio_set_value(unsigned gpio, int value);
227
228 #include <asm/irq.h>
229 #include <asm/errno.h>
230
231 #ifdef CONFIG_GPIOLIB
232 #include <asm-generic/gpio.h> /* cansleep wrappers */
233
gpio_get_value(unsigned int gpio)234 static inline int gpio_get_value(unsigned int gpio)
235 {
236 if (gpio < MAX_BLACKFIN_GPIOS)
237 return bfin_gpio_get_value(gpio);
238 else
239 return __gpio_get_value(gpio);
240 }
241
gpio_set_value(unsigned int gpio,int value)242 static inline void gpio_set_value(unsigned int gpio, int value)
243 {
244 if (gpio < MAX_BLACKFIN_GPIOS)
245 bfin_gpio_set_value(gpio, value);
246 else
247 __gpio_set_value(gpio, value);
248 }
249
gpio_cansleep(unsigned int gpio)250 static inline int gpio_cansleep(unsigned int gpio)
251 {
252 return __gpio_cansleep(gpio);
253 }
254
gpio_to_irq(unsigned gpio)255 static inline int gpio_to_irq(unsigned gpio)
256 {
257 return __gpio_to_irq(gpio);
258 }
259
260 #else /* !CONFIG_GPIOLIB */
261
gpio_request(unsigned gpio,const char * label)262 static inline int gpio_request(unsigned gpio, const char *label)
263 {
264 return bfin_gpio_request(gpio, label);
265 }
266
gpio_free(unsigned gpio)267 static inline void gpio_free(unsigned gpio)
268 {
269 return bfin_gpio_free(gpio);
270 }
271
gpio_direction_input(unsigned gpio)272 static inline int gpio_direction_input(unsigned gpio)
273 {
274 return bfin_gpio_direction_input(gpio);
275 }
276
gpio_direction_output(unsigned gpio,int value)277 static inline int gpio_direction_output(unsigned gpio, int value)
278 {
279 return bfin_gpio_direction_output(gpio, value);
280 }
281
gpio_set_debounce(unsigned gpio,unsigned debounce)282 static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
283 {
284 return -EINVAL;
285 }
286
gpio_get_value(unsigned gpio)287 static inline int gpio_get_value(unsigned gpio)
288 {
289 return bfin_gpio_get_value(gpio);
290 }
291
gpio_set_value(unsigned gpio,int value)292 static inline void gpio_set_value(unsigned gpio, int value)
293 {
294 return bfin_gpio_set_value(gpio, value);
295 }
296
gpio_to_irq(unsigned gpio)297 static inline int gpio_to_irq(unsigned gpio)
298 {
299 if (likely(gpio < MAX_BLACKFIN_GPIOS))
300 return gpio + GPIO_IRQ_BASE;
301
302 return -EINVAL;
303 }
304
305 #include <asm-generic/gpio.h> /* cansleep wrappers */
306 #endif /* !CONFIG_GPIOLIB */
307
irq_to_gpio(unsigned irq)308 static inline int irq_to_gpio(unsigned irq)
309 {
310 return (irq - GPIO_IRQ_BASE);
311 }
312
313 #endif /* __ASSEMBLY__ */
314
315 #endif /* __ARCH_BLACKFIN_GPIO_H__ */
316