include/sound/sh_fsi.h

   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
  85 struct 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
  92 struct 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 */