linux/include/sound/sh_fsi.h
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   1#ifndef __SOUND_FSI_H
   2#define __SOUND_FSI_H
   3
   4/*
   5 * Fifo-attached Serial Interface (FSI) support for SH7724
   6 *
   7 * Copyright (C) 2009 Renesas Solutions Corp.
   8 * Kuninori Morimoto <morimoto.kuninori@renesas.com>
   9 *
  10 * This program is free software; you can redistribute it and/or modify
  11 * it under the terms of the GNU General Public License version 2 as
  12 * published by the Free Software Foundation.
  13 */
  14
  15#define FSI_PORT_A      0
  16#define FSI_PORT_B      1
  17
  18#include <linux/clk.h>
  19#include <sound/soc.h>
  20
  21/*
  22 * flags format
  23 *
  24 * 0x00000CBA
  25 *
  26 * A:  inversion
  27 * B:  format mode
  28 * C:  chip specific
  29 */
  30
  31/* A: clock inversion */
  32#define SH_FSI_INVERSION_MASK   0x0000000F
  33#define SH_FSI_LRM_INV          (1 << 0)
  34#define SH_FSI_BRM_INV          (1 << 1)
  35#define SH_FSI_LRS_INV          (1 << 2)
  36#define SH_FSI_BRS_INV          (1 << 3)
  37
  38/* B: format mode */
  39#define SH_FSI_FMT_MASK         0x000000F0
  40#define SH_FSI_FMT_DAI          (0 << 4)
  41#define SH_FSI_FMT_SPDIF        (1 << 4)
  42
  43/* C: chip specific */
  44#define SH_FSI_OPTION_MASK      0x00000F00
  45#define SH_FSI_ENABLE_STREAM_MODE       (1 << 8) /* for 16bit data */
  46
  47/*
  48 * set_rate return value
  49 *
  50 * see ACKMD/BPFMD on
  51 *     ACK_MD (FSI2)
  52 *     CKG1   (FSI)
  53 *
  54 * err          : return value <  0
  55 * no change    : return value == 0
  56 * change xMD   : return value >  0
  57 *
  58 * 0x-00000AB
  59 *
  60 * A:  ACKMD value
  61 * B:  BPFMD value
  62 */
  63
  64#define SH_FSI_ACKMD_MASK       (0xF << 0)
  65#define SH_FSI_ACKMD_512        (1 << 0)
  66#define SH_FSI_ACKMD_256        (2 << 0)
  67#define SH_FSI_ACKMD_128        (3 << 0)
  68#define SH_FSI_ACKMD_64         (4 << 0)
  69#define SH_FSI_ACKMD_32         (5 << 0)
  70
  71#define SH_FSI_BPFMD_MASK       (0xF << 4)
  72#define SH_FSI_BPFMD_512        (1 << 4)
  73#define SH_FSI_BPFMD_256        (2 << 4)
  74#define SH_FSI_BPFMD_128        (3 << 4)
  75#define SH_FSI_BPFMD_64         (4 << 4)
  76#define SH_FSI_BPFMD_32         (5 << 4)
  77#define SH_FSI_BPFMD_16         (6 << 4)
  78
  79struct sh_fsi_port_info {
  80        unsigned long flags;
  81        int tx_id;
  82        int rx_id;
  83        int (*set_rate)(struct device *dev, int rate, int enable);
  84};
  85
  86struct sh_fsi_platform_info {
  87        struct sh_fsi_port_info port_a;
  88        struct sh_fsi_port_info port_b;
  89};
  90
  91#endif /* __SOUND_FSI_H */
  92
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