LXR linux/arch/blackfin/include/asm/bfin

   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
  20struct 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
  54struct 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
  72