bdf3004f96
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19410 a1c6a512-1295-4272-9138-f99709370657
249 lines
7.6 KiB
C
249 lines
7.6 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Driver for WM8751 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)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
#include "kernel.h"
|
|
#include "wmcodec.h"
|
|
#include "audio.h"
|
|
#include "audiohw.h"
|
|
#include "system.h"
|
|
|
|
const struct sound_settings_info audiohw_settings[] = {
|
|
[SOUND_VOLUME] = {"dB", 0, 1, -74, 6, -25},
|
|
#ifdef USE_ADAPTIVE_BASS
|
|
[SOUND_BASS] = {"", 0, 1, 0, 15, 0},
|
|
#else
|
|
[SOUND_BASS] = {"dB", 1, 15, -60, 90, 0},
|
|
#endif
|
|
[SOUND_TREBLE] = {"dB", 1, 15, -60, 90, 0},
|
|
[SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0},
|
|
[SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0},
|
|
[SOUND_STEREO_WIDTH] = {"%", 0, 5, 0, 250, 100},
|
|
};
|
|
|
|
/* Flags used in combination with settings */
|
|
|
|
/* use zero crossing to reduce clicks during volume changes */
|
|
#define LOUT1_BITS (LOUT1_LO1ZC)
|
|
/* latch left volume first then update left+right together */
|
|
#define ROUT1_BITS (ROUT1_RO1ZC | ROUT1_RO1VU)
|
|
#define LOUT2_BITS (LOUT2_LO2ZC)
|
|
#define ROUT2_BITS (ROUT2_RO2ZC | ROUT2_RO2VU)
|
|
/* We use linear bass control with 200 Hz cutoff */
|
|
#ifdef USE_ADAPTIVE_BASE
|
|
#define BASSCTRL_BITS (BASSCTRL_BC | BASSCTRL_BB)
|
|
#else
|
|
#define BASSCTRL_BITS (BASSCTRL_BC)
|
|
#endif
|
|
/* We use linear treble control with 4 kHz cutoff */
|
|
#define TREBCTRL_BITS (TREBCTRL_TC)
|
|
|
|
/* convert tenth of dB volume (-730..60) to master volume register value */
|
|
int tenthdb2master(int db)
|
|
{
|
|
/* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
|
|
/* 1111111 == +6dB (0x7f) */
|
|
/* 1111001 == 0dB (0x79) */
|
|
/* 0110000 == -73dB (0x30) */
|
|
/* 0101111..0000000 == mute (<= 0x2f) */
|
|
if (db < VOLUME_MIN)
|
|
return 0x0;
|
|
else
|
|
return (db / 10) + 73 + 0x30;
|
|
}
|
|
|
|
static int tone_tenthdb2hw(int value)
|
|
{
|
|
/* -6.0db..+0db..+9.0db step 1.5db - translate -60..+0..+90 step 15
|
|
to 10..6..0 step -1.
|
|
*/
|
|
value = 10 - (value + 60) / 15;
|
|
|
|
if (value == 6)
|
|
value = 0xf; /* 0db -> off */
|
|
|
|
return value;
|
|
}
|
|
|
|
|
|
#ifdef USE_ADAPTIVE_BASS
|
|
static int adaptivebass2hw(int value)
|
|
{
|
|
/* 0 to 15 step 1 - step -1 0 = off is a 15 in the register */
|
|
value = 15 - value;
|
|
|
|
return value;
|
|
}
|
|
#endif
|
|
|
|
/* Reset and power up the WM8751 */
|
|
void audiohw_preinit(void)
|
|
{
|
|
#ifdef MROBE_100
|
|
/* controls headphone ouput */
|
|
GPIOL_ENABLE |= 0x10;
|
|
GPIOL_OUTPUT_EN |= 0x10;
|
|
GPIOL_OUTPUT_VAL |= 0x10; /* disable */
|
|
#endif
|
|
|
|
/*
|
|
* 1. Switch on power supplies.
|
|
* By default the WM8751 is in Standby Mode, the DAC is
|
|
* digitally muted and the Audio Interface, Line outputs
|
|
* and Headphone outputs are all OFF (DACMU = 1 Power
|
|
* Management registers 1 and 2 are all zeros).
|
|
*/
|
|
wmcodec_write(RESET, RESET_RESET); /*Reset*/
|
|
|
|
/* 2. Enable Vmid and VREF. */
|
|
wmcodec_write(PWRMGMT1, PWRMGMT1_VREF | PWRMGMT1_VMIDSEL_5K);
|
|
|
|
/* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */
|
|
/* IWL=00(16 bit) FORMAT=10(I2S format) */
|
|
wmcodec_write(AINTFCE, AINTFCE_MS | AINTFCE_WL_16 |
|
|
AINTFCE_FORMAT_I2S);
|
|
|
|
/* Set default samplerate */
|
|
audiohw_set_frequency(HW_FREQ_DEFAULT);
|
|
}
|
|
|
|
/* Enable DACs and audio output after a short delay */
|
|
void audiohw_postinit(void)
|
|
{
|
|
/* From app notes: allow Vref to stabilize to reduce clicks */
|
|
sleep(HZ);
|
|
|
|
/* 3. Enable DACs as required. */
|
|
wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR);
|
|
|
|
/* 4. Enable line and / or headphone output buffers as required. */
|
|
#ifdef MROBE_100
|
|
wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR |
|
|
PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1);
|
|
#else
|
|
wmcodec_write(PWRMGMT2, PWRMGMT2_DACL | PWRMGMT2_DACR |
|
|
PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1 | PWRMGMT2_LOUT2 |
|
|
PWRMGMT2_ROUT2);
|
|
#endif
|
|
|
|
wmcodec_write(ADDITIONAL1, ADDITIONAL1_TSDEN | ADDITIONAL1_TOEN |
|
|
ADDITIONAL1_DMONOMIX_LLRR | ADDITIONAL1_VSEL_DEFAULT);
|
|
|
|
wmcodec_write(LEFTMIX1, LEFTMIX1_LD2LO | LEFTMIX1_LI2LO_DEFAULT);
|
|
wmcodec_write(RIGHTMIX2, RIGHTMIX2_RD2RO | RIGHTMIX2_RI2RO_DEFAULT);
|
|
|
|
#ifdef TOSHIBA_GIGABEAT_F
|
|
#ifdef HAVE_HARDWARE_BEEP
|
|
/* Single-ended mono input */
|
|
wmcodec_write(MONOMIX1, 0);
|
|
|
|
/* Route mono input to both outputs at 0dB */
|
|
wmcodec_write(LEFTMIX2, LEFTMIX2_MI2LO | LEFTMIX2_MI2LOVOL(2));
|
|
wmcodec_write(RIGHTMIX1, RIGHTMIX1_MI2RO | RIGHTMIX1_MI2ROVOL(2));
|
|
#endif
|
|
#endif
|
|
|
|
audiohw_mute(false);
|
|
|
|
#ifdef MROBE_100
|
|
/* enable headphone output */
|
|
GPIOL_OUTPUT_VAL &= ~0x10;
|
|
GPIOL_OUTPUT_EN |= 0x10;
|
|
#endif
|
|
}
|
|
|
|
void audiohw_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(LOUT1, LOUT1_BITS | LOUT1_LOUT1VOL(vol_l));
|
|
wmcodec_write(ROUT1, ROUT1_BITS | ROUT1_ROUT1VOL(vol_r));
|
|
}
|
|
|
|
#ifndef MROBE_100
|
|
void audiohw_set_lineout_vol(int vol_l, int vol_r)
|
|
{
|
|
wmcodec_write(LOUT2, LOUT2_BITS | LOUT2_LOUT2VOL(vol_l));
|
|
wmcodec_write(ROUT2, ROUT2_BITS | ROUT2_ROUT2VOL(vol_r));
|
|
}
|
|
#endif
|
|
|
|
void audiohw_set_bass(int value)
|
|
{
|
|
wmcodec_write(BASSCTRL, BASSCTRL_BITS |
|
|
|
|
#ifdef USE_ADAPTIVE_BASS
|
|
BASSCTRL_BASS(adaptivebass2hw(value)));
|
|
#else
|
|
BASSCTRL_BASS(tone_tenthdb2hw(value)));
|
|
#endif
|
|
}
|
|
|
|
void audiohw_set_treble(int value)
|
|
{
|
|
wmcodec_write(TREBCTRL, TREBCTRL_BITS |
|
|
TREBCTRL_TREB(tone_tenthdb2hw(value)));
|
|
}
|
|
|
|
void audiohw_mute(bool mute)
|
|
{
|
|
/* Mute: Set DACMU = 1 to soft-mute the audio DACs. */
|
|
/* Unmute: Set DACMU = 0 to soft-un-mute the audio DACs. */
|
|
wmcodec_write(DACCTRL, mute ? DACCTRL_DACMU : 0);
|
|
}
|
|
|
|
/* Nice shutdown of WM8751 codec */
|
|
void audiohw_close(void)
|
|
{
|
|
/* 1. Set DACMU = 1 to soft-mute the audio DACs. */
|
|
audiohw_mute(true);
|
|
|
|
/* 2. Disable all output buffers. */
|
|
wmcodec_write(PWRMGMT2, 0x0);
|
|
|
|
/* 3. Switch off the power supplies. */
|
|
wmcodec_write(PWRMGMT1, 0x0);
|
|
}
|
|
|
|
void audiohw_set_frequency(int fsel)
|
|
{
|
|
static const unsigned char srctrl_table[HW_NUM_FREQ] =
|
|
{
|
|
HW_HAVE_11_([HW_FREQ_11] = CODEC_SRCTRL_11025HZ,)
|
|
HW_HAVE_22_([HW_FREQ_22] = CODEC_SRCTRL_22050HZ,)
|
|
HW_HAVE_44_([HW_FREQ_44] = CODEC_SRCTRL_44100HZ,)
|
|
HW_HAVE_88_([HW_FREQ_88] = CODEC_SRCTRL_88200HZ,)
|
|
};
|
|
|
|
if ((unsigned)fsel >= HW_NUM_FREQ)
|
|
fsel = HW_FREQ_DEFAULT;
|
|
|
|
wmcodec_write(CLOCKING, srctrl_table[fsel]);
|
|
}
|