arch/blackfin/include/asm/bfin_twi.h

   1 /*
   2  * bfin_twi.h - interface to Blackfin TWIs
   3  *
   4  * Copyright 2005-2010 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #ifndef __ASM_BFIN_TWI_H__
  10 #define __ASM_BFIN_TWI_H__
  11
  12 #include <linux/types.h>
  13
  14 /*
  15  * All Blackfin system MMRs are padded to 32bits even if the register
  16  * itself is only 16bits.  So use a helper macro to streamline this.
  17  */
  18 #define __BFP(m) u16 m; u16 __pad_##m
  19
  20 /*
  21  * bfin twi registers layout
  22  */
  23 struct bfin_twi_regs {
  24         __BFP(clkdiv);
  25         __BFP(control);
  26         __BFP(slave_ctl);
  27         __BFP(slave_stat);
  28         __BFP(slave_addr);
  29         __BFP(master_ctl);
  30         __BFP(master_stat);
  31         __BFP(master_addr);
  32         __BFP(int_stat);
  33         __BFP(int_mask);
  34         __BFP(fifo_ctl);
  35         __BFP(fifo_stat);
  36         u32 __pad[20];
  37         __BFP(xmt_data8);
  38         __BFP(xmt_data16);
  39         __BFP(rcv_data8);
  40         __BFP(rcv_data16);
  41 };
  42
  43 #undef __BFP
  44
  45 #endif