sh_fsi.h

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#ifndef __SOUND_FSI_H
#define __SOUND_FSI_H

/*
 * Fifo-attached Serial Interface (FSI) support for SH7724
 *
 * Copyright (C) 2009 Renesas Solutions Corp.
 * Kuninori Morimoto <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#define FSI_PORT_A  0
#define FSI_PORT_B  1

#include <linux/clk.h>
#include <sound/soc.h>

/*
 * flags format
 *
 * 0x00000CBA
 *
 * A:  inversion
 * B:  format mode
 * C:  chip specific
 */

/* A: clock inversion */
#define SH_FSI_INVERSION_MASK   0x0000000F
#define SH_FSI_LRM_INV      (1 << 0)
#define SH_FSI_BRM_INV      (1 << 1)
#define SH_FSI_LRS_INV      (1 << 2)
#define SH_FSI_BRS_INV      (1 << 3)

/* B: format mode */
#define SH_FSI_FMT_MASK     0x000000F0
#define SH_FSI_FMT_DAI      (0 << 4)
#define SH_FSI_FMT_SPDIF    (1 << 4)

/* C: chip specific */
#define SH_FSI_OPTION_MASK  0x00000F00
#define SH_FSI_ENABLE_STREAM_MODE   (1 << 8) /* for 16bit data */

/*
 * set_rate return value
 *
 * see ACKMD/BPFMD on
 *     ACK_MD (FSI2)
 *     CKG1   (FSI)
 *
 * err      : return value <  0
 * no change    : return value == 0
 * change xMD   : return value >  0
 *
 * 0x-00000AB
 *
 * A:  ACKMD value
 * B:  BPFMD value
 */

#define SH_FSI_ACKMD_MASK   (0xF << 0)
#define SH_FSI_ACKMD_512    (1 << 0)
#define SH_FSI_ACKMD_256    (2 << 0)
#define SH_FSI_ACKMD_128    (3 << 0)
#define SH_FSI_ACKMD_64     (4 << 0)
#define SH_FSI_ACKMD_32     (5 << 0)

#define SH_FSI_BPFMD_MASK   (0xF << 4)
#define SH_FSI_BPFMD_512    (1 << 4)
#define SH_FSI_BPFMD_256    (2 << 4)
#define SH_FSI_BPFMD_128    (3 << 4)
#define SH_FSI_BPFMD_64     (4 << 4)
#define SH_FSI_BPFMD_32     (5 << 4)
#define SH_FSI_BPFMD_16     (6 << 4)

struct sh_fsi_port_info {
    unsigned long flags;
    int tx_id;
    int rx_id;
    int (*set_rate)(struct device *dev, int rate, int enable);
};

struct sh_fsi_platform_info {
    struct sh_fsi_port_info port_a;
    struct sh_fsi_port_info port_b;
};

#endif /* __SOUND_FSI_H */