arch/blackfin/include/asm/gpio.h

   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
 172 static inline int bfin_pm_standby_setup(void)
 173 {
 174         return bfin_pm_standby_ctrl(1);
 175 }
 176
 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
 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
 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
 250 static inline int gpio_cansleep(unsigned int gpio)
 251 {
 252         return __gpio_cansleep(gpio);
 253 }
 254
 255 static inline int gpio_to_irq(unsigned gpio)
 256 {
 257         return __gpio_to_irq(gpio);
 258 }
 259
 260 #else /* !CONFIG_GPIOLIB */
 261
 262 static inline int gpio_request(unsigned gpio, const char *label)
 263 {
 264         return bfin_gpio_request(gpio, label);
 265 }
 266
 267 static inline void gpio_free(unsigned gpio)
 268 {
 269         return bfin_gpio_free(gpio);
 270 }
 271
 272 static inline int gpio_direction_input(unsigned gpio)
 273 {
 274         return bfin_gpio_direction_input(gpio);
 275 }
 276
 277 static inline int gpio_direction_output(unsigned gpio, int value)
 278 {
 279         return bfin_gpio_direction_output(gpio, value);
 280 }
 281
 282 static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
 283 {
 284         return -EINVAL;
 285 }
 286
 287 static inline int gpio_get_value(unsigned gpio)
 288 {
 289         return bfin_gpio_get_value(gpio);
 290 }
 291
 292 static inline void gpio_set_value(unsigned gpio, int value)
 293 {
 294         return bfin_gpio_set_value(gpio, value);
 295 }
 296
 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
 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__ */