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
52 void set_gpio_dir(unsigned, unsigned short);
53 void set_gpio_inen(unsigned, unsigned short);
54 void set_gpio_polar(unsigned, unsigned short);
55 void set_gpio_edge(unsigned, unsigned short);
56 void set_gpio_both(unsigned, unsigned short);
57 void set_gpio_data(unsigned, unsigned short);
58 void set_gpio_maska(unsigned, unsigned short);
59 void set_gpio_maskb(unsigned, unsigned short);
60 void set_gpio_toggle(unsigned);
61 void set_gpiop_dir(unsigned, unsigned short);
62 void set_gpiop_inen(unsigned, unsigned short);
63 void set_gpiop_polar(unsigned, unsigned short);
64 void set_gpiop_edge(unsigned, unsigned short);
65 void set_gpiop_both(unsigned, unsigned short);
66 void set_gpiop_data(unsigned, unsigned short);
67 void set_gpiop_maska(unsigned, unsigned short);
68 void set_gpiop_maskb(unsigned, unsigned short);
69 unsigned short get_gpio_dir(unsigned);
70 unsigned short get_gpio_inen(unsigned);
71 unsigned short get_gpio_polar(unsigned);
72 unsigned short get_gpio_edge(unsigned);
73 unsigned short get_gpio_both(unsigned);
74 unsigned short get_gpio_maska(unsigned);
75 unsigned short get_gpio_maskb(unsigned);
76 unsigned short get_gpio_data(unsigned);
77 unsigned short get_gpiop_dir(unsigned);
78 unsigned short get_gpiop_inen(unsigned);
79 unsigned short get_gpiop_polar(unsigned);
80 unsigned short get_gpiop_edge(unsigned);
81 unsigned short get_gpiop_both(unsigned);
82 unsigned short get_gpiop_maska(unsigned);
83 unsigned short get_gpiop_maskb(unsigned);
84 unsigned short get_gpiop_data(unsigned);
85
86 struct 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
123 void bfin_special_gpio_free(unsigned gpio);
124 int bfin_special_gpio_request(unsigned gpio, const char *label);
125 # ifdef CONFIG_PM
126 void bfin_special_gpio_pm_hibernate_restore(void);
127 void bfin_special_gpio_pm_hibernate_suspend(void);
128 # endif
129 #endif
130
131 #ifdef CONFIG_PM
132 void bfin_gpio_pm_hibernate_restore(void);
133 void bfin_gpio_pm_hibernate_suspend(void);
134 int bfin_gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
135 int bfin_gpio_pm_standby_ctrl(unsigned ctrl);
136
bfin_pm_standby_setup(void)137 static inline int bfin_pm_standby_setup(void)
138 {
139 return bfin_gpio_pm_standby_ctrl(1);
140 }
141
bfin_pm_standby_restore(void)142 static inline void bfin_pm_standby_restore(void)
143 {
144 bfin_gpio_pm_standby_ctrl(0);
145 }
146
147
148 struct 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 **************************************************************/
178 int bfin_gpio_irq_request(unsigned gpio, const char *label);
179 void bfin_gpio_irq_free(unsigned gpio);
180 void bfin_gpio_irq_prepare(unsigned gpio);
181
irq_to_gpio(unsigned irq)182 static 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
gpio_get_value(unsigned int gpio)193 static inline int gpio_get_value(unsigned int gpio)
194 {
195 return __gpio_get_value(gpio);
196 }
197
gpio_set_value(unsigned int gpio,int value)198 static inline void gpio_set_value(unsigned int gpio, int value)
199 {
200 __gpio_set_value(gpio, value);
201 }
202
gpio_cansleep(unsigned int gpio)203 static inline int gpio_cansleep(unsigned int gpio)
204 {
205 return __gpio_cansleep(gpio);
206 }
207
gpio_to_irq(unsigned gpio)208 static 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