target/linux/brcm47xx/files-2.6.25/include/asm-mips/mach-bcm947xx/gpio.h

   1 #ifndef __BCM947XX_GPIO_H
   2 #define __BCM947XX_GPIO_H
   3
   4 #include <linux/ssb/ssb_embedded.h>
   5
   6 extern struct ssb_bus ssb;
   7
   8 static inline int gpio_request(unsigned gpio, const char *label)
   9 {
  10         return 0;
  11 }
  12
  13 static inline void gpio_free(unsigned gpio)
  14 {
  15 }
  16
  17 static inline int gpio_direction_input(unsigned gpio)
  18 {
  19         ssb_gpio_outen(&ssb, 1 << gpio, 0);
  20         return 0;
  21 }
  22
  23 static inline int gpio_direction_output(unsigned gpio, int value)
  24 {
  25         ssb_gpio_out(&ssb, 1 << gpio, (value ? 1 << gpio : 0));
  26         ssb_gpio_outen(&ssb, 1 << gpio, 1 << gpio);
  27         return 0;
  28 }
  29
  30
  31 static inline int gpio_to_irq(unsigned gpio)
  32 {
  33         struct ssb_device *dev;
  34
  35         dev = ssb.chipco.dev;
  36         if (!dev)
  37                 dev = ssb.extif.dev;
  38         if (!dev)
  39                 return -EINVAL;
  40
  41         return ssb_mips_irq(dev) + 2;
  42 }
  43
  44 static inline int irq_to_gpio(unsigned gpio)
  45 {
  46         return -EINVAL;
  47 }
  48
  49
  50 static inline int gpio_get_value(unsigned gpio)
  51 {
  52         return !!ssb_gpio_in(&ssb, 1 << gpio);
  53 }
  54
  55 static inline int gpio_set_value(unsigned gpio, int value)
  56 {
  57         ssb_gpio_out(&ssb, 1 << gpio, (value ? 1 << gpio : 0));
  58         return 0;
  59 }
  60
  61
  62 /* cansleep wrappers */
  63 #include <asm-generic/gpio.h>
  64
  65
  66 #endif /* __BCM947XX_GPIO_H */
  67