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 __ASSEMBLY__
  23
  24 #include <linux/compiler.h>
  25
  26 /***********************************************************
  27 *
  28 * FUNCTIONS: Blackfin General Purpose Ports Access Functions
  29 *
  30 * INPUTS/OUTPUTS:
  31 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
  32 *
  33 *
  34 * DESCRIPTION: These functions abstract direct register access
  35 *              to Blackfin processor General Purpose
  36 *              Ports Regsiters
  37 *
  38 * CAUTION: These functions do not belong to the GPIO Driver API
  39 *************************************************************
  40 * MODIFICATION HISTORY :
  41 **************************************************************/
  42
  43 #ifndef CONFIG_BF54x
  44 void set_gpio_dir(unsigned, unsigned short);
  45 void set_gpio_inen(unsigned, unsigned short);
  46 void set_gpio_polar(unsigned, unsigned short);
  47 void set_gpio_edge(unsigned, unsigned short);
  48 void set_gpio_both(unsigned, unsigned short);
  49 void set_gpio_data(unsigned, unsigned short);
  50 void set_gpio_maska(unsigned, unsigned short);
  51 void set_gpio_maskb(unsigned, unsigned short);
  52 void set_gpio_toggle(unsigned);
  53 void set_gpiop_dir(unsigned, unsigned short);
  54 void set_gpiop_inen(unsigned, unsigned short);
  55 void set_gpiop_polar(unsigned, unsigned short);
  56 void set_gpiop_edge(unsigned, unsigned short);
  57 void set_gpiop_both(unsigned, unsigned short);
  58 void set_gpiop_data(unsigned, unsigned short);
  59 void set_gpiop_maska(unsigned, unsigned short);
  60 void set_gpiop_maskb(unsigned, unsigned short);
  61 unsigned short get_gpio_dir(unsigned);
  62 unsigned short get_gpio_inen(unsigned);
  63 unsigned short get_gpio_polar(unsigned);
  64 unsigned short get_gpio_edge(unsigned);
  65 unsigned short get_gpio_both(unsigned);
  66 unsigned short get_gpio_maska(unsigned);
  67 unsigned short get_gpio_maskb(unsigned);
  68 unsigned short get_gpio_data(unsigned);
  69 unsigned short get_gpiop_dir(unsigned);
  70 unsigned short get_gpiop_inen(unsigned);
  71 unsigned short get_gpiop_polar(unsigned);
  72 unsigned short get_gpiop_edge(unsigned);
  73 unsigned short get_gpiop_both(unsigned);
  74 unsigned short get_gpiop_maska(unsigned);
  75 unsigned short get_gpiop_maskb(unsigned);
  76 unsigned short get_gpiop_data(unsigned);
  77
  78 struct gpio_port_t {
  79         unsigned short data;
  80         unsigned short dummy1;
  81         unsigned short data_clear;
  82         unsigned short dummy2;
  83         unsigned short data_set;
  84         unsigned short dummy3;
  85         unsigned short toggle;
  86         unsigned short dummy4;
  87         unsigned short maska;
  88         unsigned short dummy5;
  89         unsigned short maska_clear;
  90         unsigned short dummy6;
  91         unsigned short maska_set;
  92         unsigned short dummy7;
  93         unsigned short maska_toggle;
  94         unsigned short dummy8;
  95         unsigned short maskb;
  96         unsigned short dummy9;
  97         unsigned short maskb_clear;
  98         unsigned short dummy10;
  99         unsigned short maskb_set;
 100         unsigned short dummy11;
 101         unsigned short maskb_toggle;
 102         unsigned short dummy12;
 103         unsigned short dir;
 104         unsigned short dummy13;
 105         unsigned short polar;
 106         unsigned short dummy14;
 107         unsigned short edge;
 108         unsigned short dummy15;
 109         unsigned short both;
 110         unsigned short dummy16;
 111         unsigned short inen;
 112 };
 113 #endif
 114
 115 #ifdef BFIN_SPECIAL_GPIO_BANKS
 116 void bfin_special_gpio_free(unsigned gpio);
 117 int bfin_special_gpio_request(unsigned gpio, const char *label);
 118 #endif
 119
 120 #ifdef CONFIG_PM
 121 int bfin_pm_standby_ctrl(unsigned ctrl);
 122
 123 static inline int bfin_pm_standby_setup(void)
 124 {
 125         return bfin_pm_standby_ctrl(1);
 126 }
 127
 128 static inline void bfin_pm_standby_restore(void)
 129 {
 130         bfin_pm_standby_ctrl(0);
 131 }
 132
 133 void bfin_gpio_pm_hibernate_restore(void);
 134 void bfin_gpio_pm_hibernate_suspend(void);
 135
 136 #ifndef CONFIG_BF54x
 137 int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
 138
 139 struct gpio_port_s {
 140         unsigned short data;
 141         unsigned short maska;
 142         unsigned short maskb;
 143         unsigned short dir;
 144         unsigned short polar;
 145         unsigned short edge;
 146         unsigned short both;
 147         unsigned short inen;
 148
 149         unsigned short fer;
 150         unsigned short reserved;
 151         unsigned short mux;
 152 };
 153 #endif /*CONFIG_BF54x*/
 154 #endif /*CONFIG_PM*/
 155 /***********************************************************
 156 *
 157 * FUNCTIONS: Blackfin GPIO Driver
 158 *
 159 * INPUTS/OUTPUTS:
 160 * gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
 161 *
 162 *
 163 * DESCRIPTION: Blackfin GPIO Driver API
 164 *
 165 * CAUTION:
 166 *************************************************************
 167 * MODIFICATION HISTORY :
 168 **************************************************************/
 169
 170 int bfin_gpio_request(unsigned gpio, const char *label);
 171 void bfin_gpio_free(unsigned gpio);
 172 int bfin_gpio_irq_request(unsigned gpio, const char *label);
 173 void bfin_gpio_irq_free(unsigned gpio);
 174 int bfin_gpio_direction_input(unsigned gpio);
 175 int bfin_gpio_direction_output(unsigned gpio, int value);
 176 int bfin_gpio_get_value(unsigned gpio);
 177 void bfin_gpio_set_value(unsigned gpio, int value);
 178
 179 #include <asm/irq.h>
 180 #include <asm/errno.h>
 181
 182 #ifdef CONFIG_GPIOLIB
 183 #include <asm-generic/gpio.h>           /* cansleep wrappers */
 184
 185 static inline int gpio_get_value(unsigned int gpio)
 186 {
 187         if (gpio < MAX_BLACKFIN_GPIOS)
 188                 return bfin_gpio_get_value(gpio);
 189         else
 190                 return __gpio_get_value(gpio);
 191 }
 192
 193 static inline void gpio_set_value(unsigned int gpio, int value)
 194 {
 195         if (gpio < MAX_BLACKFIN_GPIOS)
 196                 bfin_gpio_set_value(gpio, value);
 197         else
 198                 __gpio_set_value(gpio, value);
 199 }
 200
 201 static inline int gpio_cansleep(unsigned int gpio)
 202 {
 203         return __gpio_cansleep(gpio);
 204 }
 205
 206 static inline int gpio_to_irq(unsigned gpio)
 207 {
 208         return __gpio_to_irq(gpio);
 209 }
 210
 211 #else /* !CONFIG_GPIOLIB */
 212
 213 static inline int gpio_request(unsigned gpio, const char *label)
 214 {
 215         return bfin_gpio_request(gpio, label);
 216 }
 217
 218 static inline void gpio_free(unsigned gpio)
 219 {
 220         return bfin_gpio_free(gpio);
 221 }
 222
 223 static inline int gpio_direction_input(unsigned gpio)
 224 {
 225         return bfin_gpio_direction_input(gpio);
 226 }
 227
 228 static inline int gpio_direction_output(unsigned gpio, int value)
 229 {
 230         return bfin_gpio_direction_output(gpio, value);
 231 }
 232
 233 static inline int gpio_set_debounce(unsigned gpio, unsigned debounce)
 234 {
 235         return -EINVAL;
 236 }
 237
 238 static inline int gpio_get_value(unsigned gpio)
 239 {
 240         return bfin_gpio_get_value(gpio);
 241 }
 242
 243 static inline void gpio_set_value(unsigned gpio, int value)
 244 {
 245         return bfin_gpio_set_value(gpio, value);
 246 }
 247
 248 static inline int gpio_to_irq(unsigned gpio)
 249 {
 250         if (likely(gpio < MAX_BLACKFIN_GPIOS))
 251                 return gpio + GPIO_IRQ_BASE;
 252
 253         return -EINVAL;
 254 }
 255
 256 #include <asm-generic/gpio.h>           /* cansleep wrappers */
 257 #endif  /* !CONFIG_GPIOLIB */
 258
 259 static inline int irq_to_gpio(unsigned irq)
 260 {
 261         return (irq - GPIO_IRQ_BASE);
 262 }
 263
 264 #endif /* __ASSEMBLY__ */
 265
 266 #endif /* __ARCH_BLACKFIN_GPIO_H__ */