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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Driver for WM8731L audio codec
*
* Based on code from the ipodlinux project - http://ipodlinux.org/
* Adapted for Rockbox in January 2006
*
* Original file: linux/arch/armnommu/mach-ipod/audio.c
*
* Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "lcd.h"
#include "cpu.h"
#include "kernel.h"
#include "thread.h"
#include "power.h"
#include "debug.h"
#include "system.h"
#include "sprintf.h"
#include "button.h"
#include "string.h"
#include "file.h"
#include "buffer.h"
#include "audio.h"
#include "i2c-pp5002.h"
#include "wm8731l.h"
#include "pcf50605.h"
void wm8731l_reset(void);
#define IPOD_PCM_LEVEL 0x65 /* -6dB */
#define RESET (0x0f<<1)
#define PWRMGMT1 (0x19<<1)
#define PWRMGMT2 (0x1a<<1)
#define AINTFCE (0x07<<1)
#define LOUT1VOL (0x02<<1)
#define ROUT1VOL (0x03<<1)
#define LOUT2VOL (0x28<<1)
#define ROUT2VOL (0x29<<1)
int wm8731l_mute(int mute)
{
if (mute)
{
/* Set DACMU = 1 to soft-mute the audio DACs. */
ipod_i2c_send(0x1a, 0xa, 0x8);
} else {
/* Set DACMU = 0 to soft-un-mute the audio DACs. */
ipod_i2c_send(0x1a, 0xa, 0x0);
}
return 0;
}
/** From ipodLinux **/
static void codec_set_active(int active)
{
/* set active to 0x0 or 0x1 */
if (active) {
ipod_i2c_send(0x1a, 0x12, 0x01);
} else {
ipod_i2c_send(0x1a, 0x12, 0x00);
}
}
/*
* Reset the I2S BIT.FORMAT I2S, 16bit, FIFO.FORMAT 32bit
*/
static void i2s_reset(void)
{
/* I2S device reset */
outl(inl(0xcf005030) | 0x80, 0xcf005030);
outl(inl(0xcf005030) & ~0x80, 0xcf005030);
/* I2S controller enable */
outl(inl(0xc0002500) | 0x1, 0xc0002500);
/* BIT.FORMAT [11:10] = I2S (default) */
/* BIT.SIZE [9:8] = 24bit */
/* FIFO.FORMAT = 24 bit LSB */
/* reset DAC and ADC fifo */
outl(inl(0xc000251c) | 0x30000, 0xc000251c);
}
/*
* Initialise the WM8975 for playback via headphone and line out.
* Note, I'm using the WM8750 datasheet as its apparently close.
*/
int wm8731l_init(void) {
/* reset I2C */
i2c_init();
/* device reset */
outl(inl(0xcf005030) | 0x80, 0xcf005030);
outl(inl(0xcf005030) & ~0x80, 0xcf005030);
/* device enable */
outl(inl(0xcf005000) | 0x80, 0xcf005000);
/* GPIO D06 enable for output */
outl(inl(0xcf00000c) | 0x40, 0xcf00000c);
outl(inl(0xcf00001c) & ~0x40, 0xcf00001c);
/* bits 11,10 == 01 */
outl(inl(0xcf004040) | 0x400, 0xcf004040);
outl(inl(0xcf004040) & ~0x800, 0xcf004040);
outl(inl(0xcf004048) & ~0x1, 0xcf004048);
outl(inl(0xcf000004) & ~0xf, 0xcf000004);
outl(inl(0xcf004044) & ~0xf, 0xcf004044);
/* C03 = 0 */
outl(inl(0xcf000008) | 0x8, 0xcf000008);
outl(inl(0xcf000018) | 0x8, 0xcf000018);
outl(inl(0xcf000028) & ~0x8, 0xcf000028);
return 0;
}
/* Silently enable / disable audio output */
void wm8731l_enable_output(bool enable)
{
if (enable)
{
/* reset the I2S controller into known state */
i2s_reset();
ipod_i2c_send(0x1a, 0x1e, 0x0); /*Reset*/
codec_set_active(0x0);
/* DACSEL=1 */
/* BYPASS=1 */
ipod_i2c_send(0x1a, 0x8, 0x18);
/* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */
ipod_i2c_send(0x1a, 0xc, 0x67);
/* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */
/* IWL=00(16 bit) FORMAT=10(I2S format) */
ipod_i2c_send(0x1a, 0xe, 0x42);
wm8731l_set_sample_rate(WM8731L_44100HZ);
/* set the volume to -6dB */
ipod_i2c_send(0x1a, 0x4, IPOD_PCM_LEVEL);
ipod_i2c_send(0x1a, 0x6 | 0x1, IPOD_PCM_LEVEL);
/* ACTIVE=1 */
codec_set_active(1);
/* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */
ipod_i2c_send(0x1a, 0xa, 0x0);
wm8731l_mute(0);
} else {
wm8731l_mute(1);
}
}
int wm8731l_set_master_vol(int vol_l, int vol_r)
{
/* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
/* 1111111 == +6dB */
/* 1111001 == 0dB */
/* 0110000 == -73dB */
/* 0101111 == mute (0x2f) */
if (vol_l == vol_r) {
ipod_i2c_send(0x1a, 0x4 | 0x1, vol_l);
} else {
ipod_i2c_send(0x1a, 0x4, vol_l);
ipod_i2c_send(0x1a, 0x6, vol_r);
}
return 0;
}
int wm8975_set_mixer_vol(int channel1, int channel2)
{
(void)channel1;
(void)channel2;
return 0;
}
void wm8731l_set_bass(int value)
{
(void)value;
}
void wm8731l_set_treble(int value)
{
(void)value;
}
/* Nice shutdown of WM8975 codec */
void wm8731l_close(void)
{
/* set DACMU=1 DEEMPH=0 */
ipod_i2c_send(0x1a, 0xa, 0x8);
/* ACTIVE=0 */
codec_set_active(0x0);
/* line in mute left & right*/
ipod_i2c_send(0x1a, 0x0 | 0x1, 0x80);
/* set DACSEL=0, MUTEMIC=1 */
ipod_i2c_send(0x1a, 0x8, 0x2);
/* set POWEROFF=0 OUTPD=0 DACPD=1 */
ipod_i2c_send(0x1a, 0xc, 0x6f);
/* set POWEROFF=1 OUTPD=1 DACPD=1 */
ipod_i2c_send(0x1a, 0xc, 0xff);
}
/* Change the order of the noise shaper, 5th order is recommended above 32kHz */
void wm8731l_set_nsorder(int order)
{
(void)order;
}
/* */
void wm8731l_set_sample_rate(int sampling_control)
{
codec_set_active(0x0);
ipod_i2c_send(0x1a, 0x10, sampling_control);
codec_set_active(0x1);
}
void wm8731l_enable_recording(bool source_mic)
{
(void)source_mic;
}
void wm8731l_disable_recording(void)
{
}
void wm8731l_set_recvol(int left, int right, int type)
{
(void)left;
(void)right;
(void)type;
}
void wm8731l_set_monitor(int enable)
{
(void)enable;
}
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