arch/blackfin/include/asm/bfin_sport.h

   1 /*
   2  * bfin_sport.h - interface to Blackfin SPORTs
   3  *
   4  * Copyright 2004-2009 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8 #ifndef __BFIN_SPORT_H__
   9 #define __BFIN_SPORT_H__
  10
  11
  12 #include <linux/types.h>
  13 #include <uapi/asm/bfin_sport.h>
  14
  15 /*
  16  * All Blackfin system MMRs are padded to 32bits even if the register
  17  * itself is only 16bits.  So use a helper macro to streamline this.
  18  */
  19 #define __BFP(m) u16 m; u16 __pad_##m
  20 struct sport_register {
  21         __BFP(tcr1);
  22         __BFP(tcr2);
  23         __BFP(tclkdiv);
  24         __BFP(tfsdiv);
  25         union {
  26                 u32 tx32;
  27                 u16 tx16;
  28         };
  29         u32 __pad_tx;
  30         union {
  31                 u32 rx32;       /* use the anomaly wrapper below */
  32                 u16 rx16;
  33         };
  34         u32 __pad_rx;
  35         __BFP(rcr1);
  36         __BFP(rcr2);
  37         __BFP(rclkdiv);
  38         __BFP(rfsdiv);
  39         __BFP(stat);
  40         __BFP(chnl);
  41         __BFP(mcmc1);
  42         __BFP(mcmc2);
  43         u32 mtcs0;
  44         u32 mtcs1;
  45         u32 mtcs2;
  46         u32 mtcs3;
  47         u32 mrcs0;
  48         u32 mrcs1;
  49         u32 mrcs2;
  50         u32 mrcs3;
  51 };
  52 #undef __BFP
  53
  54 struct bfin_snd_platform_data {
  55         const unsigned short *pin_req;
  56 };
  57
  58 #define bfin_read_sport_rx32(base) \
  59 ({ \
  60         struct sport_register *__mmrs = (void *)base; \
  61         u32 __ret; \
  62         unsigned long flags; \
  63         if (ANOMALY_05000473) \
  64                 local_irq_save(flags); \
  65         __ret = __mmrs->rx32; \
  66         if (ANOMALY_05000473) \
  67                 local_irq_restore(flags); \
  68         __ret; \
  69 })
  70
  71 #endif