target/linux/brcm47xx-2.6/files/include/asm-mips/mach-bcm947xx/gpio.h

   1 #ifndef __BCM947XX_GPIO_H
   2 #define __BCM947XX_GPIO_H
   3
   4 #include <linux/ssb/ssb.h>
   5 #include <linux/ssb/ssb_driver_chipcommon.h>
   6 #include <linux/ssb/ssb_driver_extif.h>
   7
   8 extern struct ssb_bus ssb;
   9
  10 static inline int gpio_request(unsigned gpio, const char *label)
  11 {
  12         return 0;
  13 }
  14
  15 static inline void gpio_free(unsigned gpio)
  16 {
  17 }
  18
  19 static inline int gpio_direction_input(unsigned gpio)
  20 {
  21         if (ssb.chipco->dev)
  22                 ssb_chipco_gpioouten(&ssb.chipco, 1 << gpio, 0);
  23         else if (ssb.extif->dev)
  24                 ssb_extif_gpioouten(&ssb.extif, 1 << gpio, 0);
  25         else
  26                 return -EINVAL;
  27         return 0;
  28 }
  29
  30 static inline int gpio_direction_output(unsigned gpio)
  31 {
  32         if (ssb.chipco->dev)
  33                 ssb_chipco_gpioouten(&ssb.chipco, 1 << gpio, 1 << gpio);
  34         else if (ssb.extif->dev)
  35                 ssb_extif_gpioouten(&ssb.extif, 1 << gpio, 1 << gpio);
  36         else
  37                 return -EINVAL;
  38
  39         return 0;
  40 }
  41
  42
  43 static inline int gpio_to_irq(unsigned gpio)
  44 {
  45         struct ssb_device *dev;
  46
  47         dev = ssb.chipco->dev;
  48         if (!dev)
  49                 dev = ssb.extif->dev;
  50         if (!dev)
  51                 return -EINVAL;
  52
  53         return ssb_mips_irq(dev) + 2;
  54 }
  55
  56 static inline int irq_to_gpio(unsigned gpio)
  57 {
  58         return -EINVAL;
  59 }
  60
  61
  62 static inline int gpio_get_value(unsigned gpio)
  63 {
  64         if (ssb.chipco->dev)
  65                 return ssb_chipco_gpioin(&ssb.chipco, 1 << gpio) ? 1 : 0;
  66         else if (ssb.extif->dev)
  67                 return ssb_extif_gpioin(&ssb.extif, 1 << gpio) ? 1 : 0;
  68         else
  69                 return 0;
  70 }
  71
  72 static inline int gpio_set_value(unsigned gpio, int value)
  73 {
  74         if (ssb.chipco->dev)
  75                 ssb_chipco_gpioout(&ssb.chipco, 1 << gpio, (value ? 1 << gpio : 0));
  76         else if (ssb.extif->dev)
  77                 ssb_extif_gpioout(&ssb.extif, 1 << gpio, (value ? 1 << gpio : 0));
  78
  79         return 0;
  80 }
  81
  82
  83 /* cansleep wrappers */
  84 #include <asm-generic/gpio.h>
  85
  86
  87 #endif /* __BCM947XX_GPIO_H */
  88