/*
* linux/include/asm-arm/arch-omap2/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 <asm/arch/io.h>
#include <asm/arch/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 */
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 */
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 */
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 */
