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eac.h

/*
 * arch/arm/plat-omap/include/mach2/eac.h
 *
 * Defines for Enhanced Audio Controller
 *
 * Contact: Jarkko Nikula <jarkko.nikula@nokia.com>
 *
 * Copyright (C) 2006 Nokia Corporation
 * Copyright (C) 2004 Texas Instruments, Inc.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#ifndef __ASM_ARM_ARCH_OMAP2_EAC_H
#define __ASM_ARM_ARCH_OMAP2_EAC_H

#include <mach/io.h>
#include <mach/hardware.h>
#include <asm/irq.h>

#include <sound/core.h>

/* master codec clock source */
#define EAC_MCLK_EXT_MASK     0x100
enum eac_mclk_src {
      EAC_MCLK_INT_11290000, /* internal 96 MHz / 8.5 = 11.29 Mhz */
      EAC_MCLK_EXT_11289600 = EAC_MCLK_EXT_MASK,
      EAC_MCLK_EXT_12288000,
      EAC_MCLK_EXT_2x11289600,
      EAC_MCLK_EXT_2x12288000,
};

/* codec port interface mode */
enum eac_codec_mode {
      EAC_CODEC_PCM,
      EAC_CODEC_AC97,
      EAC_CODEC_I2S_MASTER, /* codec port, I.e. EAC is the master */
      EAC_CODEC_I2S_SLAVE,
};

/* configuration structure for I2S mode */
00055 struct eac_i2s_conf {
      /* if enabled, then first data slot (left channel) is signaled as
       * positive level of frame sync EAC.AC_FS */
      unsigned    polarity_changed_mode:1;
      /* if enabled, then serial data starts one clock cycle after the
       * of EAC.AC_FS for first audio slot */
      unsigned    sync_delay_enable:1;
};

/* configuration structure for EAC codec port */
00065 struct eac_codec {
      enum eac_mclk_src mclk_src;

      enum eac_codec_mode     codec_mode;
      union {
            struct eac_i2s_conf     i2s;
      } codec_conf;

      int         default_rate; /* audio sampling rate */

      int         (* set_power)(void *private_data, int dac, int adc);
      int         (* register_controls)(void *private_data,
                                    struct snd_card *card);
      const char  *short_name;

      void        *private_data;
};

/* structure for passing platform dependent data to the EAC driver */
00084 struct eac_platform_data {
        int (* init)(struct device *eac_dev);
      void  (* cleanup)(struct device *eac_dev);
      /* these callbacks are used to configure & control external MCLK
       * source. NULL if not used */
      int   (* enable_ext_clocks)(struct device *eac_dev);
      void  (* disable_ext_clocks)(struct device *eac_dev);
};

extern void omap_init_eac(struct eac_platform_data *pdata);

extern int eac_register_codec(struct device *eac_dev, struct eac_codec *codec);
extern void eac_unregister_codec(struct device *eac_dev);

extern int eac_set_mode(struct device *eac_dev, int play, int rec);

#endif /* __ASM_ARM_ARCH_OMAP2_EAC_H */

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