blob: aec6f3b598830a9b9975cc8b68deaefe69853249 [file] [log] [blame]
/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Driver for WM8758 audio codec
*
* Based on code from the ipodlinux project - http://ipodlinux.org/
* Adapted for Rockbox in December 2005
*
* 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-pp5020.h"
#include "wm8758.h"
#include "pcf50605.h"
void wmcodec_reset(void);
#define IPOD_PCM_LEVEL 0x65 /* -6dB */
//#define BASSCTRL 0x
//#define TREBCTRL 0x0b
/*
* Reset the I2S BIT.FORMAT I2S, 16bit, FIFO.FORMAT 32bit
*/
static void i2s_reset(void)
{
/* PP502x */
/* 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);
}
void wm8758_write(int reg, int data)
{
ipod_i2c_send(0x1a, (reg<<1) | ((data&0x100)>>8),data&0xff);
}
/*
* Initialise the WM8758 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();
/* 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);
return 0;
}
/* Silently enable / disable audio output */
void wmcodec_enable_output(bool enable)
{
if (enable)
{
/* reset the I2S controller into known state */
i2s_reset();
/* TODO: Review the power-up sequence to prevent pops */
wm8758_write(RESET, 0x1ff); /*Reset*/
wm8758_write(PWRMGMT1, 0x2b);
wm8758_write(PWRMGMT2, 0x180);
wm8758_write(PWRMGMT3, 0x6f);
wm8758_write(AINTFCE, 0x10);
wm8758_write(CLKCTRL, 0x49);
wm8758_write(OUTCTRL, 1);
/* The iPod can handle multiple frequencies, but fix at 44.1KHz
for now */
wmcodec_set_sample_rate(WM8758_44100HZ);
wm8758_write(LOUTMIX,0x1); /* Enable mixer */
wm8758_write(ROUTMIX,0x1); /* Enable mixer */
wmcodec_mute(0);
} else {
wmcodec_mute(1);
}
}
int wmcodec_set_master_vol(int vol_l, int vol_r)
{
/* OUT1 */
wm8758_write(LOUT1VOL, vol_l);
wm8758_write(ROUT1VOL, 0x100 | vol_r);
/* OUT2 */
wm8758_write(LOUT2VOL, vol_l);
wm8758_write(ROUT2VOL, 0x100 | vol_r);
return 0;
}
int wmcodec_set_mixer_vol(int channel1, int channel2)
{
(void)channel1;
(void)channel2;
return 0;
}
/* We are using Linear bass control */
void wmcodec_set_bass(int value)
{
(void)value;
#if 0
/* Not yet implemented - this is the wm8975 code*/
int regvalues[]={11, 10, 10, 9, 8, 8, 0xf , 6, 6, 5, 4, 4, 3, 2, 1, 0};
if ((value >= -6) && (value <= 9)) {
/* We use linear bass control with 130Hz cutoff */
wm8758_write(BASSCTRL, regvalues[value+6]);
}
#endif
}
void wmcodec_set_treble(int value)
{
(void)value;
#if 0
/* Not yet implemented - this is the wm8975 code*/
int regvalues[]={11, 10, 10, 9, 8, 8, 0xf , 6, 6, 5, 4, 4, 3, 2, 1, 0};
if ((value >= -6) && (value <= 9)) {
/* We use a 8Khz cutoff */
wm8758_write(TREBCTRL, regvalues[value+6]);
}
#endif
}
int wmcodec_mute(int mute)
{
if (mute)
{
/* Set DACMU = 1 to soft-mute the audio DACs. */
wm8758_write(DACCTRL, 0x40);
} else {
/* Set DACMU = 0 to soft-un-mute the audio DACs. */
wm8758_write(DACCTRL, 0x0);
}
return 0;
}
/* Nice shutdown of WM8758 codec */
void wmcodec_close(void)
{
wmcodec_mute(1);
wm8758_write(PWRMGMT3, 0x0);
wm8758_write(PWRMGMT1, 0x0);
wm8758_write(PWRMGMT2, 0x40);
}
/* Change the order of the noise shaper, 5th order is recommended above 32kHz */
void wmcodec_set_nsorder(int order)
{
(void)order;
}
/* Note: Disable output before calling this function */
void wmcodec_set_sample_rate(int sampling_control)
{
/**** We force 44.1KHz for now. ****/
(void)sampling_control;
/* set clock div */
wm8758_write(CLKCTRL, 1 | (0 << 2) | (2 << 5));
/* setup PLL for MHZ=11.2896 */
wm8758_write(PLLN, (1 << 4) | 0x7);
wm8758_write(PLLK1, 0x21);
wm8758_write(PLLK2, 0x161);
wm8758_write(PLLK3, 0x26);
/* set clock div */
wm8758_write(CLKCTRL, 1 | (1 << 2) | (2 << 5) | (1 << 8));
/* set srate */
wm8758_write(SRATECTRL, (0 << 1));
}
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;
}