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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Driver for AS3514 audio codec
*
* Copyright (c) 2007 Daniel Ankers
* Copyright (c) 2007 Christian Gmeiner
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#ifndef _ASCODEC_TARGET_H
#define _ASCODEC_TARGET_H
#ifndef SIMULATOR
#include "as3514.h"
#include "kernel.h" /* for struct wakeup */
#include "clock-target.h" /* for AS3525_I2C_PRESCALER */
#include "system-arm.h"
/* Charge Pump and Power management Settings */
#define AS314_CP_DCDC3_SETTING \
((0<<7) | /* CP_SW Auto-Switch Margin 0=200/300 1=150/255 */ \
(0<<6) | /* CP_on 0=Normal op 1=Chg Pump Always On */ \
(0<<5) | /* LREG_CPnot Always write 0 */ \
(0<<3) | /* DCDC3p BVDD setting 3.6/3.2/3.1/3.0 */ \
(1<<2) | /* LREG_off 1=Auto mode switching 0=Length Reg only*/\
(0<<0) ) /* CVDDp Core Voltage Setting 1.2/1.15/1.10/1.05*/
#define CVDD_1_20 0
#define CVDD_1_15 1
#define CVDD_1_10 2
#define CVDD_1_05 3
#define ASCODEC_REQ_READ 0
#define ASCODEC_REQ_WRITE 1
/*
* How many bytes we using in struct ascodec_request for the data buffer.
* 4 fits the alignment best right now.
* We don't actually use more than 2 at the moment (in adc_read).
* Upper limit would be 255 since DACNT is 8 bits!
*/
#define ASCODEC_REQ_MAXLEN 4
typedef void (ascodec_cb_fn)(unsigned const char *data, unsigned cnt);
struct ascodec_request {
unsigned char type;
unsigned char index;
unsigned char status;
unsigned char cnt;
unsigned char data[ASCODEC_REQ_MAXLEN];
struct wakeup wkup;
ascodec_cb_fn *callback;
struct ascodec_request *next;
};
void ascodec_init(void);
int ascodec_write(unsigned int index, unsigned int value);
#if CONFIG_CPU == AS3525v2
static inline void ascodec_write_pmu(unsigned int index, unsigned int subreg,
unsigned int value)
{
/* we disable interrupts to make sure no operation happen on the i2c bus
* between selecting the sub register and writing to it */
int oldstatus = disable_irq_save();
ascodec_write(AS3543_PMU_ENABLE, 8|subreg);
ascodec_write(index, value);
restore_irq(oldstatus);
}
#endif
int ascodec_read(unsigned int index);
int ascodec_readbytes(unsigned int index, unsigned int len, unsigned char *data);
/*
* The request struct passed in must be allocated statically.
* If you call ascodec_async_write from different places, each
* call needs it's own request struct.
* This comment is duplicated in .c and .h for your convenience.
*/
void ascodec_async_write(unsigned index, unsigned int value, struct ascodec_request *req);
/*
* The request struct passed in must be allocated statically.
* If you call ascodec_async_read from different places, each
* call needs it's own request struct.
* If len is bigger than ASCODEC_REQ_MAXLEN it will be
* set to ASCODEC_REQ_MAXLEN.
* This comment is duplicated in .c and .h for your convenience.
*/
void ascodec_async_read(unsigned index, unsigned int len,
struct ascodec_request *req, ascodec_cb_fn *cb);
void ascodec_req_init(struct ascodec_request *req, int type,
unsigned int index, unsigned int cnt);
void ascodec_submit(struct ascodec_request *req);
void ascodec_lock(void);
void ascodec_unlock(void);
#if CONFIG_CPU == AS3525
void ascodec_wait_adc_finished(void);
#else
static inline void ascodec_wait_adc_finished(void)
{
/* FIXME: Doesn't work yet on AS3525v2 */
}
#endif
void ascodec_enable_endofch_irq(void);
void ascodec_disable_endofch_irq(void);
#endif /* !SIMULATOR */
#endif /* !_ASCODEC_TARGET_H */
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