arch/arm7/common/platform_device.c

   1 #include <tinyx/device.h>
   2 #include <tinyx/kernel.h>
   3 #include <asm/io.h>
   4 #include <asm/platform_device.h>
   5
   6 static void platform_writeb(struct device *dev,
   7                             unsigned char val, unsigned long addr)
   8 {
   9         __raw_writeb(val, addr);
  10 }
  11
  12 static void platform_writew(struct device *dev,
  13                             unsigned int val, unsigned long addr)
  14 {
  15         __raw_writew(val, addr);
  16 }
  17
  18 static void platform_writel(struct device *dev,
  19                             unsigned long val, unsigned long addr)
  20 {
  21         __raw_writel(val, addr);
  22 }
  23
  24 static unsigned char platform_readb(struct device *dev, unsigned long addr)
  25 {
  26         return __raw_readb(addr);
  27 }
  28
  29 static unsigned int platform_readw(struct device *dev, unsigned long addr)
  30 {
  31         return __raw_readb(addr);
  32 }
  33
  34 static unsigned long platform_readl(struct device *dev, unsigned long addr)
  35 {
  36         return __raw_readb(addr);
  37 }
  38
  39 static struct bus_type platform_bus = {
  40         .name = "platform",
  41         .writeb = platform_writeb,
  42         .writew = platform_writew,
  43         .writel = platform_writel,
  44         .readb = platform_readb,
  45         .readw = platform_readw,
  46         .readl = platform_readl,
  47 };
  48
  49 int register_platform_device(struct device *dev)
  50 {
  51         return register_device(dev, &platform_bus);
  52 }
  53
  54 static int __init init_platform(void)
  55 {
  56         register_bus_type(&platform_bus);
  57
  58         return 0;
  59 }
  60
  61 early_init(init_platform);