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ctdaio.h

/**
 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
 *
 * This source file is released under GPL v2 license (no other versions).
 * See the COPYING file included in the main directory of this source
 * distribution for the license terms and conditions.
 *
 * @File    ctdaio.h
 *
 * @Brief
 * This file contains the definition of Digital Audio Input Output
 * resource management object.
 *
 * @Author  Liu Chun
 * @Date    May 23 2008
 *
 */

#ifndef CTDAIO_H
#define CTDAIO_H

#include "ctresource.h"
#include "ctimap.h"
#include <linux/spinlock.h>
#include <linux/list.h>

/* Define the descriptor of a daio resource */
enum DAIOTYP {
      LINEO1,
      LINEO2,
      LINEO3,
      LINEO4,
      SPDIFOO,    /* S/PDIF Out (Flexijack/Optical) */
      LINEIM,
      SPDIFIO,    /* S/PDIF In (Flexijack/Optical) on the card */
      SPDIFI1,    /* S/PDIF In on internal Drive Bay */
      NUM_DAIOTYP
};

struct dao_rsc_ops;
struct dai_rsc_ops;
struct daio_mgr;

struct daio {
      struct rsc rscl;  /* Basic resource info for left TX/RX */
      struct rsc rscr;  /* Basic resource info for right TX/RX */
      enum DAIOTYP type;
};

struct dao {
      struct daio daio;
      struct dao_rsc_ops *ops;      /* DAO specific operations */
      struct imapper **imappers;
      struct daio_mgr *mgr;
      void *hw;
      void *ctrl_blk;
};

struct dai {
      struct daio daio;
      struct dai_rsc_ops *ops;      /* DAI specific operations */
      void *hw;
      void *ctrl_blk;
};

struct dao_desc {
      unsigned int msr:4;
      unsigned int passthru:1;
};

struct dao_rsc_ops {
      int (*set_spos)(struct dao *dao, unsigned int spos);
      int (*commit_write)(struct dao *dao);
      int (*get_spos)(struct dao *dao, unsigned int *spos);
      int (*reinit)(struct dao *dao, const struct dao_desc *desc);
      int (*set_left_input)(struct dao *dao, struct rsc *input);
      int (*set_right_input)(struct dao *dao, struct rsc *input);
      int (*clear_left_input)(struct dao *dao);
      int (*clear_right_input)(struct dao *dao);
};

struct dai_rsc_ops {
      int (*set_srt_srcl)(struct dai *dai, struct rsc *src);
      int (*set_srt_srcr)(struct dai *dai, struct rsc *src);
      int (*set_srt_msr)(struct dai *dai, unsigned int msr);
      int (*set_enb_src)(struct dai *dai, unsigned int enb);
      int (*set_enb_srt)(struct dai *dai, unsigned int enb);
      int (*commit_write)(struct dai *dai);
};

/* Define daio resource request description info */
struct daio_desc {
      unsigned int type:4;
      unsigned int msr:4;
      unsigned int passthru:1;
};

struct daio_mgr {
      struct rsc_mgr mgr;     /* Basic resource manager info */
      spinlock_t mgr_lock;
      spinlock_t imap_lock;
      struct list_head imappers;
      struct imapper *init_imap;
      unsigned int init_imap_added;

       /* request one daio resource */
      int (*get_daio)(struct daio_mgr *mgr,
                  const struct daio_desc *desc, struct daio **rdaio);
      /* return one daio resource */
      int (*put_daio)(struct daio_mgr *mgr, struct daio *daio);
      int (*daio_enable)(struct daio_mgr *mgr, struct daio *daio);
      int (*daio_disable)(struct daio_mgr *mgr, struct daio *daio);
      int (*imap_add)(struct daio_mgr *mgr, struct imapper *entry);
      int (*imap_delete)(struct daio_mgr *mgr, struct imapper *entry);
      int (*commit_write)(struct daio_mgr *mgr);
};

/* Constructor and destructor of daio resource manager */
int daio_mgr_create(void *hw, struct daio_mgr **rdaio_mgr);
int daio_mgr_destroy(struct daio_mgr *daio_mgr);

#endif /* CTDAIO_H */

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