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#ifndef CONFIG_PINCTRL
29
30#include <linux/compiler.h>
31#include <asm/blackfin.h>
32#include <asm/portmux.h>
33#include <asm/irq_handler.h>
34
35/***********************************************************
36*
37* FUNCTIONS: Blackfin General Purpose Ports Access Functions
38*
39* INPUTS/OUTPUTS:
40* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
41*
42*
43* DESCRIPTION: These functions abstract direct register access
44*              to Blackfin processor General Purpose
45*              Ports Regsiters
46*
47* CAUTION: These functions do not belong to the GPIO Driver API
48*************************************************************
49* MODIFICATION HISTORY :
50**************************************************************/
51
52void set_gpio_dir(unsigned, unsigned short);
53void set_gpio_inen(unsigned, unsigned short);
54void set_gpio_polar(unsigned, unsigned short);
55void set_gpio_edge(unsigned, unsigned short);
56void set_gpio_both(unsigned, unsigned short);
57void set_gpio_data(unsigned, unsigned short);
58void set_gpio_maska(unsigned, unsigned short);
59void set_gpio_maskb(unsigned, unsigned short);
60void set_gpio_toggle(unsigned);
61void set_gpiop_dir(unsigned, unsigned short);
62void set_gpiop_inen(unsigned, unsigned short);
63void set_gpiop_polar(unsigned, unsigned short);
64void set_gpiop_edge(unsigned, unsigned short);
65void set_gpiop_both(unsigned, unsigned short);
66void set_gpiop_data(unsigned, unsigned short);
67void set_gpiop_maska(unsigned, unsigned short);
68void set_gpiop_maskb(unsigned, unsigned short);
69unsigned short get_gpio_dir(unsigned);
70unsigned short get_gpio_inen(unsigned);
71unsigned short get_gpio_polar(unsigned);
72unsigned short get_gpio_edge(unsigned);
73unsigned short get_gpio_both(unsigned);
74unsigned short get_gpio_maska(unsigned);
75unsigned short get_gpio_maskb(unsigned);
76unsigned short get_gpio_data(unsigned);
77unsigned short get_gpiop_dir(unsigned);
78unsigned short get_gpiop_inen(unsigned);
79unsigned short get_gpiop_polar(unsigned);
80unsigned short get_gpiop_edge(unsigned);
81unsigned short get_gpiop_both(unsigned);
82unsigned short get_gpiop_maska(unsigned);
83unsigned short get_gpiop_maskb(unsigned);
84unsigned short get_gpiop_data(unsigned);
85
86struct gpio_port_t {
87	unsigned short data;
88	unsigned short dummy1;
89	unsigned short data_clear;
90	unsigned short dummy2;
91	unsigned short data_set;
92	unsigned short dummy3;
93	unsigned short toggle;
94	unsigned short dummy4;
95	unsigned short maska;
96	unsigned short dummy5;
97	unsigned short maska_clear;
98	unsigned short dummy6;
99	unsigned short maska_set;
100	unsigned short dummy7;
101	unsigned short maska_toggle;
102	unsigned short dummy8;
103	unsigned short maskb;
104	unsigned short dummy9;
105	unsigned short maskb_clear;
106	unsigned short dummy10;
107	unsigned short maskb_set;
108	unsigned short dummy11;
109	unsigned short maskb_toggle;
110	unsigned short dummy12;
111	unsigned short dir;
112	unsigned short dummy13;
113	unsigned short polar;
114	unsigned short dummy14;
115	unsigned short edge;
116	unsigned short dummy15;
117	unsigned short both;
118	unsigned short dummy16;
119	unsigned short inen;
120};
121
122#ifdef BFIN_SPECIAL_GPIO_BANKS
123void bfin_special_gpio_free(unsigned gpio);
124int bfin_special_gpio_request(unsigned gpio, const char *label);
125# ifdef CONFIG_PM
126void bfin_special_gpio_pm_hibernate_restore(void);
127void bfin_special_gpio_pm_hibernate_suspend(void);
128# endif
129#endif
130
131#ifdef CONFIG_PM
132void bfin_gpio_pm_hibernate_restore(void);
133void bfin_gpio_pm_hibernate_suspend(void);
134int bfin_gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
135int bfin_gpio_pm_standby_ctrl(unsigned ctrl);
136
137static inline int bfin_pm_standby_setup(void)
138{
139	return bfin_gpio_pm_standby_ctrl(1);
140}
141
142static inline void bfin_pm_standby_restore(void)
143{
144	bfin_gpio_pm_standby_ctrl(0);
145}
146
147
148struct gpio_port_s {
149	unsigned short data;
150	unsigned short maska;
151	unsigned short maskb;
152	unsigned short dir;
153	unsigned short polar;
154	unsigned short edge;
155	unsigned short both;
156	unsigned short inen;
157
158	unsigned short fer;
159	unsigned short reserved;
160	unsigned short mux;
161};
162#endif /*CONFIG_PM*/
163
164/***********************************************************
165*
166* FUNCTIONS: Blackfin GPIO Driver
167*
168* INPUTS/OUTPUTS:
169* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
170*
171*
172* DESCRIPTION: Blackfin GPIO Driver API
173*
174* CAUTION:
175*************************************************************
176* MODIFICATION HISTORY :
177**************************************************************/
178int bfin_gpio_irq_request(unsigned gpio, const char *label);
179void bfin_gpio_irq_free(unsigned gpio);
180void bfin_gpio_irq_prepare(unsigned gpio);
181
182static inline int irq_to_gpio(unsigned irq)
183{
184	return irq - GPIO_IRQ_BASE;
185}
186#endif /* CONFIG_PINCTRL */
187
188#include <asm/irq.h>
189#include <asm/errno.h>
190
191#include <asm-generic/gpio.h>		/* cansleep wrappers */
192
193static inline int gpio_get_value(unsigned int gpio)
194{
195	return __gpio_get_value(gpio);
196}
197
198static inline void gpio_set_value(unsigned int gpio, int value)
199{
200	__gpio_set_value(gpio, value);
201}
202
203static inline int gpio_cansleep(unsigned int gpio)
204{
205	return __gpio_cansleep(gpio);
206}
207
208static inline int gpio_to_irq(unsigned gpio)
209{
210	return __gpio_to_irq(gpio);
211}
212#endif /* __ASSEMBLY__ */
213
214#endif /* __ARCH_BLACKFIN_GPIO_H__ */
215