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rockbox/firmware/drivers/wm8731l.c
Jens Arnold 7e0ea2153c iPod mini 2G: Define correct audio codec, and fix WM8731 driver to work with PP5020. Audio is working now. 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9367 a1c6a512-1295-4272-9138-f99709370657
2006-03-30 20:18:02 +00:00

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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"
#define IPOD_PCM_LEVEL 0x65 /* -6dB */
#define LINVOL 0x00
#define RINVOL 0x01
#define LOUTVOL 0x02
#define ROUTVOL 0x03
#define DACCTRL 0x05
#define PWRMGMT 0x06
#define AINTFCE 0x07
#define SAMPCTRL 0x08
#define ACTIVECTRL 0x09
#define RESET 0x0f
void wm8731_write(int reg, int data)
{
ipod_i2c_send(0x1a, (reg<<1) | ((data&0x100)>>8),data&0xff);
}
int wmcodec_mute(int mute)
{
if (mute)
{
/* Set DACMU = 1 to soft-mute the audio DACs. */
wm8731_write(DACCTRL, 0x8);
} else {
/* Set DACMU = 0 to soft-un-mute the audio DACs. */
wm8731_write(DACCTRL, 0x0);
}
return 0;
}
/** From ipodLinux **/
static void codec_set_active(int active)
{
/* set active to 0x0 or 0x1 */
if (active) {
wm8731_write(ACTIVECTRL, 0x01);
} else {
wm8731_write(ACTIVECTRL, 0x00);
}
}
/*
* Reset the I2S BIT.FORMAT I2S, 16bit, FIFO.FORMAT 32bit
*/
static void i2s_reset(void)
{
#if CONFIG_CPU == PP5020
/* I2S soft reset */
outl(inl(0x70002800) | 0x80000000, 0x70002800);
outl(inl(0x70002800) & ~0x80000000, 0x70002800);
/* BIT.FORMAT [11:10] = I2S (default) */
outl(inl(0x70002800) & ~0xc00, 0x70002800);
/* BIT.SIZE [9:8] = 16bit (default) */
outl(inl(0x70002800) & ~0x300, 0x70002800);
/* FIFO.FORMAT [6:4] = 32 bit LSB */
/* since BIT.SIZ < FIFO.FORMAT low 16 bits will be 0 */
outl(inl(0x70002800) | 0x30, 0x70002800);
/* RX_ATN_LVL=1 == when 12 slots full */
/* TX_ATN_LVL=1 == when 12 slots empty */
outl(inl(0x7000280c) | 0x33, 0x7000280c);
/* Rx.CLR = 1, TX.CLR = 1 */
outl(inl(0x7000280c) | 0x1100, 0x7000280c);
#elif CONFIG_CPU == PP5002
/* 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);
#endif
}
/*
* Initialise the WM8975 for playback via headphone and line out.
* Note, I'm using the WM8750 datasheet as its apparently close.
*/
int wmcodec_init(void) {
/* reset I2C */
i2c_init();
#if CONFIG_CPU == PP5020
/* normal outputs for CDI and I2S pin groups */
outl(inl(0x70000020) & ~0x300, 0x70000020);
/*mini2?*/
outl(inl(0x70000010) & ~0x3000000, 0x70000010);
/*mini2?*/
/* device reset */
outl(inl(0x60006004) | 0x800, 0x60006004);
outl(inl(0x60006004) & ~0x800, 0x60006004);
/* device enable */
outl(inl(0x6000600C) | 0x807, 0x6000600C);
/* enable external dev clock clocks */
outl(inl(0x6000600c) | 0x2, 0x6000600c);
/* external dev clock to 24MHz */
outl(inl(0x70000018) & ~0xc, 0x70000018);
#else
/* 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);
#endif
return 0;
}
/* Silently enable / disable audio output */
void wmcodec_enable_output(bool enable)
{
if (enable)
{
/* reset the I2S controller into known state */
i2s_reset();
wm8731_write(RESET, 0x0); /*Reset*/
codec_set_active(0x0);
#ifdef HAVE_WM8721
/* DACSEL=1 */
wm8731_write(0x4, 0x10);
#elif defined HAVE_WM8731
/* DACSEL=1, BYPASS=1 */
wm8731_write(0x4, 0x18);
#endif
/* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */
wm8731_write(PWRMGMT, 0x67);
/* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */
/* IWL=00(16 bit) FORMAT=10(I2S format) */
wm8731_write(AINTFCE, 0x42);
wmcodec_set_sample_rate(WM8731L_44100HZ);
/* set the volume to -6dB */
wm8731_write(LOUTVOL, IPOD_PCM_LEVEL);
wm8731_write(ROUTVOL, 0x100 | IPOD_PCM_LEVEL);
/* ACTIVE=1 */
codec_set_active(1);
/* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */
wm8731_write(DACCTRL, 0x0);
wmcodec_mute(0);
} else {
wmcodec_mute(1);
}
}
int wmcodec_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) */
wm8731_write(LOUTVOL, vol_l);
wm8731_write(ROUTVOL, vol_r);
return 0;
}
int wmcodec_set_mixer_vol(int channel1, int channel2)
{
(void)channel1;
(void)channel2;
return 0;
}
void wmcodec_set_bass(int value)
{
(void)value;
}
void wmcodec_set_treble(int value)
{
(void)value;
}
/* Nice shutdown of WM8731 codec */
void wmcodec_close(void)
{
/* set DACMU=1 DEEMPH=0 */
wm8731_write(DACCTRL, 0x8);
/* ACTIVE=0 */
codec_set_active(0x0);
/* line in mute left & right*/
wm8731_write(LINVOL, 0x100 | 0x80);
/* set DACSEL=0, MUTEMIC=1 */
wm8731_write(0x4, 0x2);
/* set POWEROFF=0 OUTPD=0 DACPD=1 */
wm8731_write(PWRMGMT, 0x6f);
/* set POWEROFF=1 OUTPD=1 DACPD=1 */
wm8731_write(PWRMGMT, 0xff);
}
/* Change the order of the noise shaper, 5th order is recommended above 32kHz */
void wmcodec_set_nsorder(int order)
{
(void)order;
}
void wmcodec_set_sample_rate(int sampling_control)
{
codec_set_active(0x0);
wm8731_write(SAMPCTRL, sampling_control);
codec_set_active(0x1);
}
void wmcodec_enable_recording(bool source_mic)
{
(void)source_mic;
}
void wmcodec_disable_recording(void)
{
}
void wmcodec_set_recvol(int left, int right, int type)
{
(void)left;
(void)right;
(void)type;
}
void wmcodec_set_monitor(int enable)
{
(void)enable;
}
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