tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 PERIPHERAL_USAGE 1
20#define GPIO_USAGE 0
21
22#ifndef BFIN_GPIO_PINT
23# define BFIN_GPIO_PINT 0
24#endif
25
26#ifndef __ASSEMBLY__
27
28#include <linux/compiler.h>
29#include <linux/gpio.h>
30
31/***********************************************************
32*
33* FUNCTIONS: Blackfin General Purpose Ports Access Functions
34*
35* INPUTS/OUTPUTS:
36* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
37*
38*
39* DESCRIPTION: These functions abstract direct register access
40* to Blackfin processor General Purpose
41* Ports Regsiters
42*
43* CAUTION: These functions do not belong to the GPIO Driver API
44*************************************************************
45* MODIFICATION HISTORY :
46**************************************************************/
47
48#if !BFIN_GPIO_PINT
49void set_gpio_dir(unsigned, unsigned short);
50void set_gpio_inen(unsigned, unsigned short);
51void set_gpio_polar(unsigned, unsigned short);
52void set_gpio_edge(unsigned, unsigned short);
53void set_gpio_both(unsigned, unsigned short);
54void set_gpio_data(unsigned, unsigned short);
55void set_gpio_maska(unsigned, unsigned short);
56void set_gpio_maskb(unsigned, unsigned short);
57void set_gpio_toggle(unsigned);
58void set_gpiop_dir(unsigned, unsigned short);
59void set_gpiop_inen(unsigned, unsigned short);
60void set_gpiop_polar(unsigned, unsigned short);
61void set_gpiop_edge(unsigned, unsigned short);
62void set_gpiop_both(unsigned, unsigned short);
63void set_gpiop_data(unsigned, unsigned short);
64void set_gpiop_maska(unsigned, unsigned short);
65void set_gpiop_maskb(unsigned, unsigned short);
66unsigned short get_gpio_dir(unsigned);
67unsigned short get_gpio_inen(unsigned);
68unsigned short get_gpio_polar(unsigned);
69unsigned short get_gpio_edge(unsigned);
70unsigned short get_gpio_both(unsigned);
71unsigned short get_gpio_maska(unsigned);
72unsigned short get_gpio_maskb(unsigned);
73unsigned short get_gpio_data(unsigned);
74unsigned short get_gpiop_dir(unsigned);
75unsigned short get_gpiop_inen(unsigned);
76unsigned short get_gpiop_polar(unsigned);
77unsigned short get_gpiop_edge(unsigned);
78unsigned short get_gpiop_both(unsigned);
79unsigned short get_gpiop_maska(unsigned);
80unsigned short get_gpiop_maskb(unsigned);
81unsigned short get_gpiop_data(unsigned);
82
83struct gpio_port_t {
84 unsigned short data;
85 unsigned short dummy1;
86 unsigned short data_clear;
87 unsigned short dummy2;
88 unsigned short data_set;
89 unsigned short dummy3;
90 unsigned short toggle;
91 unsigned short dummy4;
92 unsigned short maska;
93 unsigned short dummy5;
94 unsigned short maska_clear;
95 unsigned short dummy6;
96 unsigned short maska_set;
97 unsigned short dummy7;
98 unsigned short maska_toggle;
99 unsigned short dummy8;
100 unsigned short maskb;
101 unsigned short dummy9;
102 unsigned short maskb_clear;
103 unsigned short dummy10;
104 unsigned short maskb_set;
105 unsigned short dummy11;
106 unsigned short maskb_toggle;
107 unsigned short dummy12;
108 unsigned short dir;
109 unsigned short dummy13;
110 unsigned short polar;
111 unsigned short dummy14;
112 unsigned short edge;
113 unsigned short dummy15;
114 unsigned short both;
115 unsigned short dummy16;
116 unsigned short inen;
117};
118#endif
119
120#ifdef BFIN_SPECIAL_GPIO_BANKS
121void bfin_special_gpio_free(unsigned gpio);
122int bfin_special_gpio_request(unsigned gpio, const char *label);
123# ifdef CONFIG_PM
124void bfin_special_gpio_pm_hibernate_restore(void);
125void bfin_special_gpio_pm_hibernate_suspend(void);
126# endif
127#endif
128
129#ifdef CONFIG_PM
130int bfin_pm_standby_ctrl(unsigned ctrl);
131
132static inline int bfin_pm_standby_setup(void)
133{
134 return bfin_pm_standby_ctrl(1);
135}
136
137static inline void bfin_pm_standby_restore(void)
138{
139 bfin_pm_standby_ctrl(0);
140}
141
142void bfin_gpio_pm_hibernate_restore(void);
143void bfin_gpio_pm_hibernate_suspend(void);
144void bfin_pint_suspend(void);
145void bfin_pint_resume(void);
146
147# if !BFIN_GPIO_PINT
148int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
149
150struct gpio_port_s {
151 unsigned short data;
152 unsigned short maska;
153 unsigned short maskb;
154 unsigned short dir;
155 unsigned short polar;
156 unsigned short edge;
157 unsigned short both;
158 unsigned short inen;
159
160 unsigned short fer;
161 unsigned short reserved;
162 unsigned short mux;
163};
164# endif
165#endif /*CONFIG_PM*/
166
167/***********************************************************
168*
169* FUNCTIONS: Blackfin GPIO Driver
170*
171* INPUTS/OUTPUTS:
172* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
173*
174*
175* DESCRIPTION: Blackfin GPIO Driver API
176*
177* CAUTION:
178*************************************************************
179* MODIFICATION HISTORY :
180**************************************************************/
181
182int bfin_gpio_request(unsigned gpio, const char *label);
183void bfin_gpio_free(unsigned gpio);
184int bfin_gpio_irq_request(unsigned gpio, const char *label);
185void bfin_gpio_irq_free(unsigned gpio);
186int bfin_gpio_direction_input(unsigned gpio);
187int bfin_gpio_direction_output(unsigned gpio, int value);
188int bfin_gpio_get_value(unsigned gpio);
189void bfin_gpio_set_value(unsigned gpio, int value);
190
191#include <asm/irq.h>
192#include <asm/errno.h>
193
194#ifdef CONFIG_GPIOLIB
195#include <asm-generic/gpio.h> /* cansleep wrappers */
196
197static inline int gpio_get_value(unsigned int gpio)
198{
199 if (gpio < MAX_BLACKFIN_GPIOS)
200 return bfin_gpio_get_value(gpio);
201 else
202 return __gpio_get_value(gpio);
203}
204
205static inline void gpio_set_value(unsigned int gpio, int value)
206{
207 if (gpio < MAX_BLACKFIN_GPIOS)
208 bfin_gpio_set_value(gpio, value);
209 else
210 __gpio_set_value(gpio, value);
211}
212
213static inline int gpio_cansleep(unsigned int gpio)
214{
215 return __gpio_cansleep(gpio);
216}
217
218static inline int gpio_to_irq(unsigned gpio)
219{
220 return __gpio_to_irq(gpio);
221}
222
223#else /* !CONFIG_GPIOLIB */
224
225static inline int gpio_request(unsigned gpio, const char *label)
226{
227 return bfin_gpio_request(gpio, label);
228}
229
230static inline void gpio_free(unsigned gpio)
231{
232 return bfin_gpio_free(gpio);
233}
234
235static inline int gpio_direction_input(unsigned gpio)
236{
237 return bfin_gpio_direction_input(gpio);
238}
239
240static inline int gpio_direction_output(unsigned gpio, int value)
241{
242 return bfin_gpio_direction_output(gpio, value);
243}
244
245static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
246{
247 return -EINVAL;
248}
249
250static inline int gpio_request_one(unsigned gpio, unsigned long flags, const char *label)
251{
252 int err;
253
254 err = bfin_gpio_request(gpio, label);
255 if (err)
256 return err;
257
258 if (flags & GPIOF_DIR_IN)
259 err = bfin_gpio_direction_input(gpio);
260 else
261 err = bfin_gpio_direction_output(gpio,
262 (flags & GPIOF_INIT_HIGH) ? 1 : 0);
263
264 if (err)
265 bfin_gpio_free(gpio);
266
267 return err;
268}
269
270static inline int gpio_request_array(const struct gpio *array, size_t num)
271{
272 int i, err;
273
274 for (i = 0; i < num; i++, array++) {
275 err = gpio_request_one(array->gpio, array->flags, array->label);
276 if (err)
277 goto err_free;
278 }
279 return 0;
280
281err_free:
282 while (i--)
283 bfin_gpio_free((--array)->gpio);
284 return err;
285}
286
287static inline void gpio_free_array(const struct gpio *array, size_t num)
288{
289 while (num--)
290 bfin_gpio_free((array++)->gpio);
291}
292
293static inline int __gpio_get_value(unsigned gpio)
294{
295 return bfin_gpio_get_value(gpio);
296}
297
298static inline void __gpio_set_value(unsigned gpio, int value)
299{
300 return bfin_gpio_set_value(gpio, value);
301}
302
303static inline int gpio_get_value(unsigned gpio)
304{
305 return __gpio_get_value(gpio);
306}
307
308static inline void gpio_set_value(unsigned gpio, int value)
309{
310 return __gpio_set_value(gpio, value);
311}
312
313static inline int gpio_to_irq(unsigned gpio)
314{
315 if (likely(gpio < MAX_BLACKFIN_GPIOS))
316 return gpio + GPIO_IRQ_BASE;
317
318 return -EINVAL;
319}
320
321#include <asm-generic/gpio.h> /* cansleep wrappers */
322#endif /* !CONFIG_GPIOLIB */
323
324static inline int irq_to_gpio(unsigned irq)
325{
326 return (irq - GPIO_IRQ_BASE);
327}
328
329#endif /* __ASSEMBLY__ */
330
331#endif /* __ARCH_BLACKFIN_GPIO_H__ */