release/src-rt-6.x.4708/linux/linux-2.6.36/arch/sh/include/cpu-sh3/cpu/dac.h

   1 #ifndef __ASM_CPU_SH3_DAC_H
   2 #define __ASM_CPU_SH3_DAC_H
   3
   4 /*
   5  * Copyright (C) 2003  Andriy Skulysh
   6  */
   7
   8
   9 #define DADR0   0xa40000a0
  10 #define DADR1   0xa40000a2
  11 #define DACR    0xa40000a4
  12 #define DACR_DAOE1      0x80
  13 #define DACR_DAOE0      0x40
  14 #define DACR_DAE        0x20
  15
  16
  17 static __inline__ void sh_dac_enable(int channel)
  18 {
  19         unsigned char v;
  20         v = __raw_readb(DACR);
  21         if(channel) v |= DACR_DAOE1;
  22         else v |= DACR_DAOE0;
  23         __raw_writeb(v,DACR);
  24 }
  25
  26 static __inline__ void sh_dac_disable(int channel)
  27 {
  28         unsigned char v;
  29         v = __raw_readb(DACR);
  30         if(channel) v &= ~DACR_DAOE1;
  31         else v &= ~DACR_DAOE0;
  32         __raw_writeb(v,DACR);
  33 }
  34
  35 static __inline__ void sh_dac_output(u8 value, int channel)
  36 {
  37         if(channel) __raw_writeb(value,DADR1);
  38         else __raw_writeb(value,DADR0);
  39 }
  40
  41 #endif /* __ASM_CPU_SH3_DAC_H */