LXR linux/include/asm-generic/gpio.h

   1#ifndef _ASM_GENERIC_GPIO_H
   2#define _ASM_GENERIC_GPIO_H
   3
   4/* platforms that don't directly support access to GPIOs through I2C, SPI,
   5 * or other blocking infrastructure can use these wrappers.
   6 */
   7
   8static inline int gpio_cansleep(unsigned gpio)
   9{
  10        return 0;
  11}
  12
  13static inline int gpio_get_value_cansleep(unsigned gpio)
  14{
  15        might_sleep();
  16        return gpio_get_value(gpio);
  17}
  18
  19static inline void gpio_set_value_cansleep(unsigned gpio, int value)
  20{
  21        might_sleep();
  22        gpio_set_value(gpio, value);
  23}
  24
  25#endif /* _ASM_GENERIC_GPIO_H */
  26