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 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
  30 /***********************************************************
  31 *
  32 * FUNCTIONS: Blackfin General Purpose Ports Access Functions
  33 *
  34 * INPUTS/OUTPUTS:
  35 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
  36 *
  37 *
  38 * DESCRIPTION: These functions abstract direct register access
  39 *              to Blackfin processor General Purpose
  40 *              Ports Regsiters
  41 *
  42 * CAUTION: These functions do not belong to the GPIO Driver API
  43 *************************************************************
  44 * MODIFICATION HISTORY :
  45 **************************************************************/
  46
  47 #if !BFIN_GPIO_PINT
  48 void set_gpio_dir(unsigned, unsigned short);
  49 void set_gpio_inen(unsigned, unsigned short);
  50 void set_gpio_polar(unsigned, unsigned short);
  51 void set_gpio_edge(unsigned, unsigned short);
  52 void set_gpio_both(unsigned, unsigned short);
  53 void set_gpio_data(unsigned, unsigned short);
  54 void set_gpio_maska(unsigned, unsigned short);
  55 void set_gpio_maskb(unsigned, unsigned short);
  56 void set_gpio_toggle(unsigned);
  57 void set_gpiop_dir(unsigned, unsigned short);
  58 void set_gpiop_inen(unsigned, unsigned short);
  59 void set_gpiop_polar(unsigned, unsigned short);
  60 void set_gpiop_edge(unsigned, unsigned short);
  61 void set_gpiop_both(unsigned, unsigned short);
  62 void set_gpiop_data(unsigned, unsigned short);
  63 void set_gpiop_maska(unsigned, unsigned short);
  64 void set_gpiop_maskb(unsigned, unsigned short);
  65 unsigned short get_gpio_dir(unsigned);
  66 unsigned short get_gpio_inen(unsigned);
  67 unsigned short get_gpio_polar(unsigned);
  68 unsigned short get_gpio_edge(unsigned);
  69 unsigned short get_gpio_both(unsigned);
  70 unsigned short get_gpio_maska(unsigned);
  71 unsigned short get_gpio_maskb(unsigned);
  72 unsigned short get_gpio_data(unsigned);
  73 unsigned short get_gpiop_dir(unsigned);
  74 unsigned short get_gpiop_inen(unsigned);
  75 unsigned short get_gpiop_polar(unsigned);
  76 unsigned short get_gpiop_edge(unsigned);
  77 unsigned short get_gpiop_both(unsigned);
  78 unsigned short get_gpiop_maska(unsigned);
  79 unsigned short get_gpiop_maskb(unsigned);
  80 unsigned short get_gpiop_data(unsigned);
  81
  82 struct gpio_port_t {
  83         unsigned short data;
  84         unsigned short dummy1;
  85         unsigned short data_clear;
  86         unsigned short dummy2;
  87         unsigned short data_set;
  88         unsigned short dummy3;
  89         unsigned short toggle;
  90         unsigned short dummy4;
  91         unsigned short maska;
  92         unsigned short dummy5;
  93         unsigned short maska_clear;
  94         unsigned short dummy6;
  95         unsigned short maska_set;
  96         unsigned short dummy7;
  97         unsigned short maska_toggle;
  98         unsigned short dummy8;
  99         unsigned short maskb;
 100         unsigned short dummy9;
 101         unsigned short maskb_clear;
 102         unsigned short dummy10;
 103         unsigned short maskb_set;
 104         unsigned short dummy11;
 105         unsigned short maskb_toggle;
 106         unsigned short dummy12;
 107         unsigned short dir;
 108         unsigned short dummy13;
 109         unsigned short polar;
 110         unsigned short dummy14;
 111         unsigned short edge;
 112         unsigned short dummy15;
 113         unsigned short both;
 114         unsigned short dummy16;
 115         unsigned short inen;
 116 };
 117 #endif
 118
 119 #ifdef BFIN_SPECIAL_GPIO_BANKS
 120 void bfin_special_gpio_free(unsigned gpio);
 121 int bfin_special_gpio_request(unsigned gpio, const char *label);
 122 # ifdef CONFIG_PM
 123 void bfin_special_gpio_pm_hibernate_restore(void);
 124 void bfin_special_gpio_pm_hibernate_suspend(void);
 125 # endif
 126 #endif
 127
 128 #ifdef CONFIG_PM
 129 int bfin_pm_standby_ctrl(unsigned ctrl);
 130
 131 static inline int bfin_pm_standby_setup(void)
 132 {
 133         return bfin_pm_standby_ctrl(1);
 134 }
 135
 136 static inline void bfin_pm_standby_restore(void)
 137 {
 138         bfin_pm_standby_ctrl(0);
 139 }
 140
 141 void bfin_gpio_pm_hibernate_restore(void);
 142 void bfin_gpio_pm_hibernate_suspend(void);
 143
 144 # if !BFIN_GPIO_PINT
 145 int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
 146
 147 struct gpio_port_s {
 148         unsigned short data;
 149         unsigned short maska;
 150         unsigned short maskb;
 151         unsigned short dir;
 152         unsigned short polar;
 153         unsigned short edge;
 154         unsigned short both;
 155         unsigned short inen;
 156
 157         unsigned short fer;
 158         unsigned short reserved;
 159         unsigned short mux;
 160 };
 161 # endif
 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
 179 int bfin_gpio_request(unsigned gpio, const char *label);
 180 void bfin_gpio_free(unsigned gpio);
 181 int bfin_gpio_irq_request(unsigned gpio, const char *label);
 182 void bfin_gpio_irq_free(unsigned gpio);
 183 int bfin_gpio_direction_input(unsigned gpio);
 184 int bfin_gpio_direction_output(unsigned gpio, int value);
 185 int bfin_gpio_get_value(unsigned gpio);
 186 void bfin_gpio_set_value(unsigned gpio, int value);
 187
 188 #include <asm/irq.h>
 189 #include <asm/errno.h>
 190
 191 #ifdef CONFIG_GPIOLIB
 192 #include <asm-generic/gpio.h>           /* cansleep wrappers */
 193
 194 static inline int gpio_get_value(unsigned int gpio)
 195 {
 196         if (gpio < MAX_BLACKFIN_GPIOS)
 197                 return bfin_gpio_get_value(gpio);
 198         else
 199                 return __gpio_get_value(gpio);
 200 }
 201
 202 static inline void gpio_set_value(unsigned int gpio, int value)
 203 {
 204         if (gpio < MAX_BLACKFIN_GPIOS)
 205                 bfin_gpio_set_value(gpio, value);
 206         else
 207                 __gpio_set_value(gpio, value);
 208 }
 209
 210 static inline int gpio_cansleep(unsigned int gpio)
 211 {
 212         return __gpio_cansleep(gpio);
 213 }
 214
 215 static inline int gpio_to_irq(unsigned gpio)
 216 {
 217         return __gpio_to_irq(gpio);
 218 }
 219
 220 #else /* !CONFIG_GPIOLIB */
 221
 222 static inline int gpio_request(unsigned gpio, const char *label)
 223 {
 224         return bfin_gpio_request(gpio, label);
 225 }
 226
 227 static inline void gpio_free(unsigned gpio)
 228 {
 229         return bfin_gpio_free(gpio);
 230 }
 231
 232 static inline int gpio_direction_input(unsigned gpio)
 233 {
 234         return bfin_gpio_direction_input(gpio);
 235 }
 236
 237 static inline int gpio_direction_output(unsigned gpio, int value)
 238 {
 239         return bfin_gpio_direction_output(gpio, value);
 240 }
 241
 242 static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
 243 {
 244         return -EINVAL;
 245 }
 246
 247 static inline int gpio_get_value(unsigned gpio)
 248 {
 249         return bfin_gpio_get_value(gpio);
 250 }
 251
 252 static inline void gpio_set_value(unsigned gpio, int value)
 253 {
 254         return bfin_gpio_set_value(gpio, value);
 255 }
 256
 257 static inline int gpio_to_irq(unsigned gpio)
 258 {
 259         if (likely(gpio < MAX_BLACKFIN_GPIOS))
 260                 return gpio + GPIO_IRQ_BASE;
 261
 262         return -EINVAL;
 263 }
 264
 265 #include <asm-generic/gpio.h>           /* cansleep wrappers */
 266 #endif  /* !CONFIG_GPIOLIB */
 267
 268 static inline int irq_to_gpio(unsigned irq)
 269 {
 270         return (irq - GPIO_IRQ_BASE);
 271 }
 272
 273 #endif /* __ASSEMBLY__ */
 274
 275 #endif /* __ARCH_BLACKFIN_GPIO_H__ */