arch/blackfin/include/asm/gpio.h

   1 /*
   2  * File:         arch/blackfin/kernel/bfin_gpio.h
   3  * Based on:
   4  * Author:       Michael Hennerich (hennerich@blackfin.uclinux.org)
   5  *
   6  * Created:
   7  * Description:
   8  *
   9  * Modified:
  10  *               Copyright 2004-2008 Analog Devices Inc.
  11  *
  12  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, see the file COPYING, or write
  26  * to the Free Software Foundation, Inc.,
  27  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  28  */
  29
  30 #ifndef __ARCH_BLACKFIN_GPIO_H__
  31 #define __ARCH_BLACKFIN_GPIO_H__
  32
  33 #define gpio_bank(x)    ((x) >> 4)
  34 #define gpio_bit(x)     (1<<((x) & 0xF))
  35 #define gpio_sub_n(x)   ((x) & 0xF)
  36
  37 #define GPIO_BANKSIZE   16
  38 #define GPIO_BANK_NUM   DIV_ROUND_UP(MAX_BLACKFIN_GPIOS, GPIO_BANKSIZE)
  39
  40 #include <mach/gpio.h>
  41
  42 #define GPIO_0  0
  43 #define GPIO_1  1
  44 #define GPIO_2  2
  45 #define GPIO_3  3
  46 #define GPIO_4  4
  47 #define GPIO_5  5
  48 #define GPIO_6  6
  49 #define GPIO_7  7
  50 #define GPIO_8  8
  51 #define GPIO_9  9
  52 #define GPIO_10 10
  53 #define GPIO_11 11
  54 #define GPIO_12 12
  55 #define GPIO_13 13
  56 #define GPIO_14 14
  57 #define GPIO_15 15
  58 #define GPIO_16 16
  59 #define GPIO_17 17
  60 #define GPIO_18 18
  61 #define GPIO_19 19
  62 #define GPIO_20 20
  63 #define GPIO_21 21
  64 #define GPIO_22 22
  65 #define GPIO_23 23
  66 #define GPIO_24 24
  67 #define GPIO_25 25
  68 #define GPIO_26 26
  69 #define GPIO_27 27
  70 #define GPIO_28 28
  71 #define GPIO_29 29
  72 #define GPIO_30 30
  73 #define GPIO_31 31
  74 #define GPIO_32 32
  75 #define GPIO_33 33
  76 #define GPIO_34 34
  77 #define GPIO_35 35
  78 #define GPIO_36 36
  79 #define GPIO_37 37
  80 #define GPIO_38 38
  81 #define GPIO_39 39
  82 #define GPIO_40 40
  83 #define GPIO_41 41
  84 #define GPIO_42 42
  85 #define GPIO_43 43
  86 #define GPIO_44 44
  87 #define GPIO_45 45
  88 #define GPIO_46 46
  89 #define GPIO_47 47
  90
  91 #define PERIPHERAL_USAGE 1
  92 #define GPIO_USAGE 0
  93
  94 #ifndef __ASSEMBLY__
  95
  96 /***********************************************************
  97 *
  98 * FUNCTIONS: Blackfin General Purpose Ports Access Functions
  99 *
 100 * INPUTS/OUTPUTS:
 101 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
 102 *
 103 *
 104 * DESCRIPTION: These functions abstract direct register access
 105 *              to Blackfin processor General Purpose
 106 *              Ports Regsiters
 107 *
 108 * CAUTION: These functions do not belong to the GPIO Driver API
 109 *************************************************************
 110 * MODIFICATION HISTORY :
 111 **************************************************************/
 112
 113 #ifndef CONFIG_BF54x
 114 void set_gpio_dir(unsigned, unsigned short);
 115 void set_gpio_inen(unsigned, unsigned short);
 116 void set_gpio_polar(unsigned, unsigned short);
 117 void set_gpio_edge(unsigned, unsigned short);
 118 void set_gpio_both(unsigned, unsigned short);
 119 void set_gpio_data(unsigned, unsigned short);
 120 void set_gpio_maska(unsigned, unsigned short);
 121 void set_gpio_maskb(unsigned, unsigned short);
 122 void set_gpio_toggle(unsigned);
 123 void set_gpiop_dir(unsigned, unsigned short);
 124 void set_gpiop_inen(unsigned, unsigned short);
 125 void set_gpiop_polar(unsigned, unsigned short);
 126 void set_gpiop_edge(unsigned, unsigned short);
 127 void set_gpiop_both(unsigned, unsigned short);
 128 void set_gpiop_data(unsigned, unsigned short);
 129 void set_gpiop_maska(unsigned, unsigned short);
 130 void set_gpiop_maskb(unsigned, unsigned short);
 131 unsigned short get_gpio_dir(unsigned);
 132 unsigned short get_gpio_inen(unsigned);
 133 unsigned short get_gpio_polar(unsigned);
 134 unsigned short get_gpio_edge(unsigned);
 135 unsigned short get_gpio_both(unsigned);
 136 unsigned short get_gpio_maska(unsigned);
 137 unsigned short get_gpio_maskb(unsigned);
 138 unsigned short get_gpio_data(unsigned);
 139 unsigned short get_gpiop_dir(unsigned);
 140 unsigned short get_gpiop_inen(unsigned);
 141 unsigned short get_gpiop_polar(unsigned);
 142 unsigned short get_gpiop_edge(unsigned);
 143 unsigned short get_gpiop_both(unsigned);
 144 unsigned short get_gpiop_maska(unsigned);
 145 unsigned short get_gpiop_maskb(unsigned);
 146 unsigned short get_gpiop_data(unsigned);
 147
 148 struct gpio_port_t {
 149         unsigned short data;
 150         unsigned short dummy1;
 151         unsigned short data_clear;
 152         unsigned short dummy2;
 153         unsigned short data_set;
 154         unsigned short dummy3;
 155         unsigned short toggle;
 156         unsigned short dummy4;
 157         unsigned short maska;
 158         unsigned short dummy5;
 159         unsigned short maska_clear;
 160         unsigned short dummy6;
 161         unsigned short maska_set;
 162         unsigned short dummy7;
 163         unsigned short maska_toggle;
 164         unsigned short dummy8;
 165         unsigned short maskb;
 166         unsigned short dummy9;
 167         unsigned short maskb_clear;
 168         unsigned short dummy10;
 169         unsigned short maskb_set;
 170         unsigned short dummy11;
 171         unsigned short maskb_toggle;
 172         unsigned short dummy12;
 173         unsigned short dir;
 174         unsigned short dummy13;
 175         unsigned short polar;
 176         unsigned short dummy14;
 177         unsigned short edge;
 178         unsigned short dummy15;
 179         unsigned short both;
 180         unsigned short dummy16;
 181         unsigned short inen;
 182 };
 183 #endif
 184
 185 #ifdef CONFIG_PM
 186
 187 unsigned int bfin_pm_standby_setup(void);
 188 void bfin_pm_standby_restore(void);
 189
 190 void bfin_gpio_pm_hibernate_restore(void);
 191 void bfin_gpio_pm_hibernate_suspend(void);
 192
 193 #ifndef CONFIG_BF54x
 194 #define PM_WAKE_RISING  0x1
 195 #define PM_WAKE_FALLING 0x2
 196 #define PM_WAKE_HIGH    0x4
 197 #define PM_WAKE_LOW     0x8
 198 #define PM_WAKE_BOTH_EDGES      (PM_WAKE_RISING | PM_WAKE_FALLING)
 199 #define PM_WAKE_IGNORE  0xF0
 200
 201 int gpio_pm_wakeup_request(unsigned gpio, unsigned char type);
 202 void gpio_pm_wakeup_free(unsigned gpio);
 203
 204 struct gpio_port_s {
 205         unsigned short data;
 206         unsigned short maska;
 207         unsigned short maskb;
 208         unsigned short dir;
 209         unsigned short polar;
 210         unsigned short edge;
 211         unsigned short both;
 212         unsigned short inen;
 213
 214         unsigned short fer;
 215         unsigned short reserved;
 216         unsigned short mux;
 217 };
 218 #endif /*CONFIG_BF54x*/
 219 #endif /*CONFIG_PM*/
 220 /***********************************************************
 221 *
 222 * FUNCTIONS: Blackfin GPIO Driver
 223 *
 224 * INPUTS/OUTPUTS:
 225 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
 226 *
 227 *
 228 * DESCRIPTION: Blackfin GPIO Driver API
 229 *
 230 * CAUTION:
 231 *************************************************************
 232 * MODIFICATION HISTORY :
 233 **************************************************************/
 234
 235 int bfin_gpio_request(unsigned gpio, const char *label);
 236 void bfin_gpio_free(unsigned gpio);
 237 int bfin_gpio_irq_request(unsigned gpio, const char *label);
 238 void bfin_gpio_irq_free(unsigned gpio);
 239 int bfin_gpio_direction_input(unsigned gpio);
 240 int bfin_gpio_direction_output(unsigned gpio, int value);
 241 int bfin_gpio_get_value(unsigned gpio);
 242 void bfin_gpio_set_value(unsigned gpio, int value);
 243
 244 #ifdef CONFIG_GPIOLIB
 245 #include <asm-generic/gpio.h>           /* cansleep wrappers */
 246
 247 static inline int gpio_get_value(unsigned int gpio)
 248 {
 249         if (gpio < MAX_BLACKFIN_GPIOS)
 250                 return bfin_gpio_get_value(gpio);
 251         else
 252                 return __gpio_get_value(gpio);
 253 }
 254
 255 static inline void gpio_set_value(unsigned int gpio, int value)
 256 {
 257         if (gpio < MAX_BLACKFIN_GPIOS)
 258                 bfin_gpio_set_value(gpio, value);
 259         else
 260                 __gpio_set_value(gpio, value);
 261 }
 262
 263 static inline int gpio_cansleep(unsigned int gpio)
 264 {
 265         return __gpio_cansleep(gpio);
 266 }
 267
 268 #else /* !CONFIG_GPIOLIB */
 269
 270 static inline int gpio_request(unsigned gpio, const char *label)
 271 {
 272         return bfin_gpio_request(gpio, label);
 273 }
 274
 275 static inline void gpio_free(unsigned gpio)
 276 {
 277         return bfin_gpio_free(gpio);
 278 }
 279
 280 static inline int gpio_direction_input(unsigned gpio)
 281 {
 282         return bfin_gpio_direction_input(gpio);
 283 }
 284
 285 static inline int gpio_direction_output(unsigned gpio, int value)
 286 {
 287         return bfin_gpio_direction_output(gpio, value);
 288 }
 289
 290 static inline int gpio_get_value(unsigned gpio)
 291 {
 292         return bfin_gpio_get_value(gpio);
 293 }
 294
 295 static inline void gpio_set_value(unsigned gpio, int value)
 296 {
 297         return bfin_gpio_set_value(gpio, value);
 298 }
 299
 300 #include <asm-generic/gpio.h>           /* cansleep wrappers */
 301 #endif  /* !CONFIG_GPIOLIB */
 302 #include <asm/irq.h>
 303
 304 static inline int gpio_to_irq(unsigned gpio)
 305 {
 306         if (likely(gpio < MAX_BLACKFIN_GPIOS))
 307                 return gpio + GPIO_IRQ_BASE;
 308
 309         return -EINVAL;
 310 }
 311
 312 static inline int irq_to_gpio(unsigned irq)
 313 {
 314         return (irq - GPIO_IRQ_BASE);
 315 }
 316
 317 #endif /* __ASSEMBLY__ */
 318
 319 #endif /* __ARCH_BLACKFIN_GPIO_H__ */