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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 "wmcodec.h"
#include "wm8731l.h"
#define IPOD_PCM_LEVEL 0x65 /* -6dB */
int wmcodec_mute(int mute)
{
if (mute)
{
/* Set DACMU = 1 to soft-mute the audio DACs. */
wmcodec_write(DACCTRL, 0x8);
} else {
/* Set DACMU = 0 to soft-un-mute the audio DACs. */
wmcodec_write(DACCTRL, 0x0);
}
return 0;
}
/** From ipodLinux **/
static void codec_set_active(int active)
{
/* set active to 0x0 or 0x1 */
if (active) {
wmcodec_write(ACTIVECTRL, 0x01);
} else {
wmcodec_write(ACTIVECTRL, 0x00);
}
}
/* Silently enable / disable audio output */
void wmcodec_enable_output(bool enable)
{
if (enable)
{
/* reset the I2S controller into known state */
i2s_reset();
wmcodec_write(RESET, 0x0); /*Reset*/
codec_set_active(0x0);
#ifdef HAVE_WM8721
/* DACSEL=1 */
wmcodec_write(0x4, 0x10);
#elif defined HAVE_WM8731
/* DACSEL=1, BYPASS=1 */
wmcodec_write(0x4, 0x18);
#endif
/* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */
wmcodec_write(PWRMGMT, 0x67);
/* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */
/* IWL=00(16 bit) FORMAT=10(I2S format) */
wmcodec_write(AINTFCE, 0x42);
wmcodec_set_sample_rate(WM8731L_44100HZ);
/* set the volume to -6dB */
wmcodec_write(LOUTVOL, IPOD_PCM_LEVEL);
wmcodec_write(ROUTVOL, 0x100 | IPOD_PCM_LEVEL);
/* ACTIVE=1 */
codec_set_active(1);
/* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */
wmcodec_write(DACCTRL, 0x0);
#if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
/* We need to enable bit 4 of GPIOL for output for sound on H10 */
GPIOL_OUTPUT_VAL |= 0x10;
#endif
wmcodec_mute(0);
} else {
#if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
/* We need to disable bit 4 of GPIOL to disable sound on H10 */
GPIOL_OUTPUT_VAL &= ~0x10;
#endif
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) */
wmcodec_write(LOUTVOL, vol_l);
wmcodec_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 */
wmcodec_write(DACCTRL, 0x8);
/* ACTIVE=0 */
codec_set_active(0x0);
/* line in mute left & right*/
wmcodec_write(LINVOL, 0x100 | 0x80);
/* set DACSEL=0, MUTEMIC=1 */
wmcodec_write(0x4, 0x2);
/* set POWEROFF=0 OUTPD=0 DACPD=1 */
wmcodec_write(PWRMGMT, 0x6f);
/* set POWEROFF=1 OUTPD=1 DACPD=1 */
wmcodec_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);
wmcodec_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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