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 * D:  clock selecter if master mode
  30 */
  31
  32/* A: clock inversion */
  33#define SH_FSI_INVERSION_MASK   0x0000000F
  34#define SH_FSI_LRM_INV          (1 << 0)
  35#define SH_FSI_BRM_INV          (1 << 1)
  36#define SH_FSI_LRS_INV          (1 << 2)
  37#define SH_FSI_BRS_INV          (1 << 3)
  38
  39/* B: format mode */
  40#define SH_FSI_FMT_MASK         0x000000F0
  41#define SH_FSI_FMT_DAI          (0 << 4)
  42#define SH_FSI_FMT_SPDIF        (1 << 4)
  43
  44/* C: chip specific */
  45#define SH_FSI_OPTION_MASK      0x00000F00
  46#define SH_FSI_ENABLE_STREAM_MODE       (1 << 8) /* for 16bit data */
  47
  48/* D:  clock selecter if master mode */
  49#define SH_FSI_CLK_MASK         0x0000F000
  50#define SH_FSI_CLK_EXTERNAL     (0 << 12)
  51#define SH_FSI_CLK_CPG          (1 << 12) /* FSIxCK + FSI-DIV */
  52
  53/*
  54 * set_rate return value
  55 *
  56 * see ACKMD/BPFMD on
  57 *     ACK_MD (FSI2)
  58 *     CKG1   (FSI)
  59 *
  60 * err          : return value <  0
  61 * no change    : return value == 0
  62 * change xMD   : return value >  0
  63 *
  64 * 0x-00000AB
  65 *
  66 * A:  ACKMD value
  67 * B:  BPFMD value
  68 */
  69
  70#define SH_FSI_ACKMD_MASK       (0xF << 0)
  71#define SH_FSI_ACKMD_512        (1 << 0)
  72#define SH_FSI_ACKMD_256        (2 << 0)
  73#define SH_FSI_ACKMD_128        (3 << 0)
  74#define SH_FSI_ACKMD_64         (4 << 0)
  75#define SH_FSI_ACKMD_32         (5 << 0)
  76
  77#define SH_FSI_BPFMD_MASK       (0xF << 4)
  78#define SH_FSI_BPFMD_512        (1 << 4)
  79#define SH_FSI_BPFMD_256        (2 << 4)
  80#define SH_FSI_BPFMD_128        (3 << 4)
  81#define SH_FSI_BPFMD_64         (4 << 4)
  82#define SH_FSI_BPFMD_32         (5 << 4)
  83#define SH_FSI_BPFMD_16         (6 << 4)
  84
  85struct sh_fsi_port_info {
  86        unsigned long flags;
  87        int tx_id;
  88        int rx_id;
  89        int (*set_rate)(struct device *dev, int rate, int enable);
  90};
  91
  92struct sh_fsi_platform_info {
  93        struct sh_fsi_port_info port_a;
  94        struct sh_fsi_port_info port_b;
  95};
  96
  97#endif /* __SOUND_FSI_H */
  98
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