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/*
* Purpose: Low level routines for AC97 based Envy24HT boards (mainly Envy24-PT).
*/
/*
*
* This file is part of Open Sound System.
*
* Copyright (C) 4Front Technologies 1996-2008.
*
* This 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.
*
*/
#include "oss_envy24ht_cfg.h"
#include "spdif.h"
#include "envy24ht.h"
#define AKM_ADDRESS 0x10
#if 0
# define PRT_STATUS(v) outb(v&0xff, 0x378)
#else
# define PRT_STATUS(v)
#endif
#if 0
static unsigned char
i2c_read (envy24ht_devc * devc, unsigned char addr, unsigned char pos)
{
int i;
unsigned char data;
oss_native_word flags;
MUTEX_ENTER_IRQDISABLE (devc->low_mutex, flags);
OUTB (devc->osdev, pos, devc->ccs_base + 0x11); /* Offset */
OUTB (devc->osdev, addr << 1, devc->ccs_base + 0x10); /* Read address */
for (i = 0; i < 2000; i++)
{
unsigned char status = INB (devc->osdev, devc->ccs_base + 0x13);
if (!(status & 1))
break;
}
oss_udelay (1);
data = INB (devc->osdev, devc->ccs_base + 0x12);
MUTEX_EXIT_IRQRESTORE (devc->low_mutex, flags);
return data;
}
static void
i2c_write (envy24ht_devc * devc, unsigned char addr, unsigned char pos,
unsigned char data)
{
int i;
oss_native_word flags;
MUTEX_ENTER_IRQDISABLE (devc->low_mutex, flags);
OUTB (devc->osdev, pos, devc->ccs_base + 0x11); /* Offset */
OUTB (devc->osdev, data, devc->ccs_base + 0x12); /* Data */
OUTB (devc->osdev, (addr << 1) | 1, devc->ccs_base + 0x10); /* Write address */
for (i = 0; i < 2000; i++)
{
unsigned char status = INB (devc->osdev, devc->ccs_base + 0x13);
if (!(status & 1))
break;
}
MUTEX_EXIT_IRQRESTORE (devc->low_mutex, flags);
}
#endif
/*ARGSUSED*/
static void
init_cs8415a (envy24ht_devc * devc)
{
}
/*ARGSUSED*/
static void
init_wm8728 (envy24ht_devc * devc)
{
#if 0
printk ("Regs=");
for (i = 0; i < 0x18; i++)
{
PRT_STATUS (2);
printk ("%02x ", i2c_read (devc, addr, i));
PRT_STATUS (0);
}
printk ("\n");
#endif
}
static void
ac97_card_init (envy24ht_devc * devc)
{
PRT_STATUS (0);
PRT_STATUS (0x01);
PRT_STATUS (0);
OUTW (devc->osdev, 0x000f, devc->ccs_base + 0x14); /* GPIO */
oss_udelay (1000);
devc->recsrc = 0;
init_cs8415a (devc);
init_wm8728 (devc);
}
/*ARGSUSED*/
static int
ac97_mixer_init (envy24ht_devc * devc, int dev, int group)
{
return 0;
}
#if 0
static int
ac97_private1 (envy24ht_devc * devc, int value)
{
i2c_write (devc, AKM_ADDRESS, (value >> 8) & 0xff, value & 0xff);
return 0;
}
#endif
envy24ht_auxdrv_t envy24ht_ac97_auxdrv = {
ac97_card_init,
ac97_mixer_init
};
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