arch/arm/plat-ambarella/include/plat/audio.h

/*
 * arch/arm/plat-ambarella/include/plat/audio.h
 *
 * Author: Anthony Ginger <hfjiang@ambarella.com>
 *
 * Copyright (C) 2004-2010, Ambarella, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

#ifndef __PLAT_AMBARELLA_AUDIO_H
#define __PLAT_AMBARELLA_AUDIO_H

/* ==========================================================================*/
#define DAI_CLOCK_MASK		0x0000001f

#define MAX_MCLK_IDX_NUM		15

/* ==========================================================================*/
#ifndef __ASSEMBLER__

struct notifier_block;

struct ambarella_i2s_interface {
	u8 state;
	u8 mode;
	u8 sfreq;
	u8 clksrc;
	u8 ms_mode;
	u8 mclk;
	u8 ch;
	u8 oversample;
	u8 word_order;
	u8 word_len;
	u8 word_pos;
	u8 slots;
};

#define MAX_OVERSAMPLE_IDX_NUM	9
enum AudioCodec_OverSample {
	AudioCodec_128xfs = 0,
	AudioCodec_256xfs = 1,
	AudioCodec_384xfs = 2,
	AudioCodec_512xfs = 3,
	AudioCodec_768xfs = 4,
	AudioCodec_1024xfs = 5,
	AudioCodec_1152xfs = 6,
	AudioCodec_1536xfs = 7,
	AudioCodec_2304xfs = 8
};

enum AudioCodec_MCLK {
	AudioCodec_18_432M = 0,
	AudioCodec_16_9344M = 1,
	AudioCodec_12_288M = 2,
	AudioCodec_11_2896M = 3,
	AudioCodec_9_216M = 4,
	AudioCodec_8_4672M = 5,
	AudioCodec_8_192M = 6,
	AudioCodec_6_144 = 7,
	AudioCodec_5_6448M = 8,
	AudioCodec_4_608M = 9,
	AudioCodec_4_2336M = 10,
	AudioCodec_4_096M = 11,
	AudioCodec_3_072M = 12,
	AudioCodec_2_8224M = 13,
	AudioCodec_2_048M = 14
};

enum audio_in_freq_e
{
	AUDIO_SF_reserved = 0,
	AUDIO_SF_96000,
	AUDIO_SF_48000,
	AUDIO_SF_44100,
	AUDIO_SF_32000,
	AUDIO_SF_24000,
	AUDIO_SF_22050,
	AUDIO_SF_16000,
	AUDIO_SF_12000,
	AUDIO_SF_11025,
	AUDIO_SF_8000,
};

enum Audio_Notify_Type
{
	AUDIO_NOTIFY_UNKNOWN,
	AUDIO_NOTIFY_INIT,
	AUDIO_NOTIFY_SETHWPARAMS,
	AUDIO_NOTIFY_REMOVE
};

enum DAI_Mode
{
	DAI_leftJustified_Mode = 0,
	DAI_rightJustified_Mode = 1,
	DAI_MSBExtend_Mode = 2,
	DAI_I2S_Mode = 4,
	DAI_DSP_Mode = 6
};

enum DAI_MS_MODE
{
	DAI_SLAVE = 0,
	DAI_MASTER = 1
};

enum DAI_resolution
{
	DAI_16bits = 0,
	DAI_18bits = 1,
	DAI_20bits = 2,
	DAI_24bits = 3,
	DAI_32bits = 4

};

enum DAI_ifunion
{
	DAI_union = 0,
	DAI_nonunion = 1
};

enum DAI_WordOrder
{
	DAI_MSB_FIRST = 0,
	DAI_LSB_FIRST = 1
};

enum DAI_INIT_CTL
{
	DAI_FIFO_RST = 1,
	DAI_RX_EN = 2,
	DAI_TX_EN = 4
};

#define DAI_32slots	32
#define DAI_64slots	64
#define DAI_48slots	48

#define AMBARELLA_CLKSRC_ONCHIP	AUC_CLK_ONCHIP_PLL_27MHZ
#define AMBARELLA_CLKSRC_EXTERNAL	AUC_CLK_EXTERNAL
#define AMBARELLA_CLKDIV_LRCLK	0

struct ambarella_i2s_controller {
	void					(*aucodec_digitalio_0)(void);
	void					(*aucodec_digitalio_1)(void);
	void					(*aucodec_digitalio_2)(void);
	void					(*channel_select)(u32);
	void					(*set_audio_pll)(u8, u8);
};

/* ==========================================================================*/
extern struct platform_device			ambarella_i2s0;
extern struct platform_device			ambarella_pcm0;
extern struct platform_device			ambarella_dummy_codec0;

extern u32					alsa_tx_enable_flag;

/* ==========================================================================*/
extern int ambarella_init_audio(void);

extern void ambarella_audio_notify_transition(struct ambarella_i2s_interface *data, unsigned int type);
extern int ambarella_audio_register_notifier(struct notifier_block *nb);
extern int ambarella_audio_unregister_notifier(struct notifier_block *nb);

extern struct ambarella_i2s_interface get_audio_i2s_interface(void);

#endif /* __ASSEMBLER__ */
/* ==========================================================================*/

#endif