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/* flags format
  19
  20 * 0xABCDEEFF
  21 *
  22 * A:  channel size for TDM (input)
  23 * B:  channel size for TDM (ooutput)
  24 * C:  inversion
  25 * D:  mode
  26 * E:  input format
  27 * F:  output format
  28 */
  29
  30#include <linux/clk.h>
  31#include <sound/soc.h>
  32
  33/* TDM channel */
  34#define SH_FSI_SET_CH_I(x)      ((x & 0xF) << 28)
  35#define SH_FSI_SET_CH_O(x)      ((x & 0xF) << 24)
  36
  37#define SH_FSI_CH_IMASK         0xF0000000
  38#define SH_FSI_CH_OMASK         0x0F000000
  39#define SH_FSI_GET_CH_I(x)      ((x & SH_FSI_CH_IMASK) >> 28)
  40#define SH_FSI_GET_CH_O(x)      ((x & SH_FSI_CH_OMASK) >> 24)
  41
  42/* clock inversion */
  43#define SH_FSI_INVERSION_MASK   0x00F00000
  44#define SH_FSI_LRM_INV          (1 << 20)
  45#define SH_FSI_BRM_INV          (1 << 21)
  46#define SH_FSI_LRS_INV          (1 << 22)
  47#define SH_FSI_BRS_INV          (1 << 23)
  48
  49/* mode */
  50#define SH_FSI_MODE_MASK        0x000F0000
  51#define SH_FSI_IN_SLAVE_MODE    (1 << 16)  /* default master mode */
  52#define SH_FSI_OUT_SLAVE_MODE   (1 << 17)  /* default master mode */
  53
  54/* DI format */
  55#define SH_FSI_FMT_MASK         0x000000FF
  56#define SH_FSI_IFMT(x)          (((SH_FSI_FMT_ ## x) & SH_FSI_FMT_MASK) << 8)
  57#define SH_FSI_OFMT(x)          (((SH_FSI_FMT_ ## x) & SH_FSI_FMT_MASK) << 0)
  58#define SH_FSI_GET_IFMT(x)      ((x >> 8) & SH_FSI_FMT_MASK)
  59#define SH_FSI_GET_OFMT(x)      ((x >> 0) & SH_FSI_FMT_MASK)
  60
  61#define SH_FSI_FMT_MONO         0
  62#define SH_FSI_FMT_MONO_DELAY   1
  63#define SH_FSI_FMT_PCM          2
  64#define SH_FSI_FMT_I2S          3
  65#define SH_FSI_FMT_TDM          4
  66#define SH_FSI_FMT_TDM_DELAY    5
  67#define SH_FSI_FMT_SPDIF        6
  68
  69
  70#define SH_FSI_IFMT_TDM_CH(x) \
  71        (SH_FSI_IFMT(TDM)       | SH_FSI_SET_CH_I(x))
  72#define SH_FSI_IFMT_TDM_DELAY_CH(x) \
  73        (SH_FSI_IFMT(TDM_DELAY) | SH_FSI_SET_CH_I(x))
  74
  75#define SH_FSI_OFMT_TDM_CH(x) \
  76        (SH_FSI_OFMT(TDM)       | SH_FSI_SET_CH_O(x))
  77#define SH_FSI_OFMT_TDM_DELAY_CH(x) \
  78        (SH_FSI_OFMT(TDM_DELAY) | SH_FSI_SET_CH_O(x))
  79
  80
  81/*
  82 * set_rate return value
  83 *
  84 * see ACKMD/BPFMD on
  85 *     ACK_MD (FSI2)
  86 *     CKG1   (FSI)
  87 *
  88 * err          : return value <  0
  89 * no change    : return value == 0
  90 * change xMD   : return value >  0
  91 *
  92 * 0x-00000AB
  93 *
  94 * A:  ACKMD value
  95 * B:  BPFMD value
  96 */
  97
  98#define SH_FSI_ACKMD_MASK       (0xF << 0)
  99#define SH_FSI_ACKMD_512        (1 << 0)
 100#define SH_FSI_ACKMD_256        (2 << 0)
 101#define SH_FSI_ACKMD_128        (3 << 0)
 102#define SH_FSI_ACKMD_64         (4 << 0)
 103#define SH_FSI_ACKMD_32         (5 << 0)
 104
 105#define SH_FSI_BPFMD_MASK       (0xF << 4)
 106#define SH_FSI_BPFMD_512        (1 << 4)
 107#define SH_FSI_BPFMD_256        (2 << 4)
 108#define SH_FSI_BPFMD_128        (3 << 4)
 109#define SH_FSI_BPFMD_64         (4 << 4)
 110#define SH_FSI_BPFMD_32         (5 << 4)
 111#define SH_FSI_BPFMD_16         (6 << 4)
 112
 113struct sh_fsi_platform_info {
 114        unsigned long porta_flags;
 115        unsigned long portb_flags;
 116        int (*set_rate)(struct device *dev, int is_porta, int rate, int enable);
 117};
 118
 119#endif /* __SOUND_FSI_H */
 120