15dfe87f96
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@13209 a1c6a512-1295-4272-9138-f99709370657
305 lines
7.6 KiB
C
305 lines
7.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Driver for WM8731L audio codec
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*
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* Based on code from the ipodlinux project - http://ipodlinux.org/
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* Adapted for Rockbox in January 2006
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*
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* Original file: linux/arch/armnommu/mach-ipod/audio.c
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*
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* Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "lcd.h"
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#include "cpu.h"
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#include "kernel.h"
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#include "thread.h"
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#include "power.h"
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#include "debug.h"
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#include "system.h"
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#include "sprintf.h"
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#include "button.h"
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#include "string.h"
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#include "file.h"
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#include "buffer.h"
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#include "audio.h"
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#include "wmcodec.h"
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#include "wm8731l.h"
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#include "i2s.h"
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#define IPOD_PCM_LEVEL 0x65 /* -6dB */
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/* use zero crossing to reduce clicks during volume changes */
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#define VOLUME_ZC_WAIT (1<<7)
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/* convert tenth of dB volume (-730..60) to master volume register value */
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int tenthdb2master(int db)
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{
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/* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
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/* 1111111 == +6dB (0x7f) */
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/* 1111001 == 0dB (0x79) */
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/* 0110000 == -73dB (0x30 */
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/* 0101111 == mute (0x2f) */
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if (db < VOLUME_MIN) {
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return 0x2f;
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} else {
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return((db/10)+0x30+73);
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}
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}
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/* convert tenth of dB volume (-780..0) to mixer volume register value */
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int tenthdb2mixer(int db)
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{
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if (db < -660) /* 1.5 dB steps */
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return (2640 - db) / 15;
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else if (db < -600) /* 0.75 dB steps */
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return (990 - db) * 2 / 15;
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else if (db < -460) /* 0.5 dB steps */
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return (460 - db) / 5;
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else /* 0.25 dB steps */
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return -db * 2 / 5;
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}
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int audiohw_mute(int mute)
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{
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if (mute)
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{
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/* Set DACMU = 1 to soft-mute the audio DACs. */
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wmcodec_write(DACCTRL, 0x8);
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} else {
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/* Set DACMU = 0 to soft-un-mute the audio DACs. */
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wmcodec_write(DACCTRL, 0x0);
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}
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return 0;
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}
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/** From ipodLinux **/
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static void codec_set_active(int active)
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{
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/* set active to 0x0 or 0x1 */
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if (active) {
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wmcodec_write(ACTIVECTRL, 0x01);
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} else {
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wmcodec_write(ACTIVECTRL, 0x00);
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}
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}
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/* Silently enable / disable audio output */
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void audiohw_enable_output(bool enable)
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{
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if (enable)
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{
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/* reset the I2S controller into known state */
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i2s_reset();
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wmcodec_write(RESET, 0x0); /*Reset*/
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codec_set_active(0x0);
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#ifdef HAVE_WM8721
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/* DACSEL=1 */
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wmcodec_write(0x4, 0x10);
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#elif defined HAVE_WM8731
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/* DACSEL=1, BYPASS=1 */
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wmcodec_write(0x4, 0x18);
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#endif
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/* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */
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wmcodec_write(PWRMGMT, 0x67);
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/* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */
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/* IWL=00(16 bit) FORMAT=10(I2S format) */
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wmcodec_write(AINTFCE, 0x42);
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audiohw_set_sample_rate(WM8731L_44100HZ);
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/* set the volume to -6dB */
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wmcodec_write(LOUTVOL, IPOD_PCM_LEVEL);
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wmcodec_write(ROUTVOL, 0x100 | IPOD_PCM_LEVEL);
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/* ACTIVE=1 */
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codec_set_active(1);
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/* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */
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wmcodec_write(DACCTRL, 0x0);
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#if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
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/* We need to enable bit 4 of GPIOL for output for sound on H10 */
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GPIOL_OUTPUT_VAL |= 0x10;
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#endif
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audiohw_mute(0);
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} else {
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#if defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
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/* We need to disable bit 4 of GPIOL to disable sound on H10 */
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GPIOL_OUTPUT_VAL &= ~0x10;
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#endif
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audiohw_mute(1);
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}
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}
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int audiohw_set_master_vol(int vol_l, int vol_r)
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{
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/* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
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/* 1111111 == +6dB */
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/* 1111001 == 0dB */
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/* 0110000 == -73dB */
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/* 0101111 == mute (0x2f) */
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wmcodec_write(LOUTVOL, VOLUME_ZC_WAIT | vol_l);
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wmcodec_write(ROUTVOL, VOLUME_ZC_WAIT | vol_r);
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return 0;
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}
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int audiohw_set_mixer_vol(int channel1, int channel2)
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{
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(void)channel1;
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(void)channel2;
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return 0;
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}
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void audiohw_set_bass(int value)
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{
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(void)value;
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}
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void audiohw_set_treble(int value)
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{
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(void)value;
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}
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/* Nice shutdown of WM8731 codec */
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void audiohw_close(void)
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{
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/* set DACMU=1 DEEMPH=0 */
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wmcodec_write(DACCTRL, 0x8);
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/* ACTIVE=0 */
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codec_set_active(0x0);
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/* line in mute left & right*/
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wmcodec_write(LINVOL, 0x100 | 0x80);
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/* set DACSEL=0, MUTEMIC=1 */
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wmcodec_write(0x4, 0x2);
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/* set POWEROFF=0 OUTPD=0 DACPD=1 */
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wmcodec_write(PWRMGMT, 0x6f);
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/* set POWEROFF=1 OUTPD=1 DACPD=1 */
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wmcodec_write(PWRMGMT, 0xff);
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}
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/* Change the order of the noise shaper, 5th order is recommended above 32kHz */
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void audiohw_set_nsorder(int order)
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{
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(void)order;
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}
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void audiohw_set_sample_rate(int sampling_control)
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{
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codec_set_active(0x0);
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wmcodec_write(SAMPCTRL, sampling_control);
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codec_set_active(0x1);
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}
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void audiohw_enable_recording(bool source_mic)
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{
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static int line_level = 0x17;
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static int mic_boost = true;
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codec_set_active(0x0);
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/* set BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0
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* LRP=0 IWL=00(16 bit) FORMAT=10(I2S format) */
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wmcodec_write(AINTFCE, 0x42);
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wmcodec_write(LOUTVOL, 0x0); /* headphone mute left */
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wmcodec_write(ROUTVOL, 0x0); /* headphone mute right */
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if(source_mic){
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wmcodec_write(LINVOL, 0x80); /* line in mute left */
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wmcodec_write(RINVOL, 0x80); /* line in mute right */
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if (mic_boost) {
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wmcodec_write(AAPCTRL, 0x5); /* INSEL=mic, MIC_BOOST=enable */
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} else {
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wmcodec_write(AAPCTRL, 0x4); /* INSEL=mic */
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}
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} else {
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if (line_level == 0) {
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wmcodec_write(LINVOL, 0x80);
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wmcodec_write(RINVOL, 0x80);
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} else {
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wmcodec_write(LINVOL, line_level);
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wmcodec_write(RINVOL, line_level);
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}
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wmcodec_write(AAPCTRL, 0xa); /* BY PASS, mute mic, INSEL=line in */
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}
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/* disable ADC high pass filter, mute dac */
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wmcodec_write(DACCTRL, 0x9);
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/* power on (PWR_OFF=0) */
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if(source_mic){
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/* CLKOUTPD OSCPD OUTPD DACPD LINEINPD */
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wmcodec_write(PWRMGMT, 0x79);
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} else {
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wmcodec_write(PWRMGMT, 0x7a); /* MICPD */
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}
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codec_set_active(0x1);
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}
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void audiohw_disable_recording(void)
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{
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/* set DACMU=1 DEEMPH=0 */
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wmcodec_write(DACCTRL, 0x8);
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/* ACTIVE=0 */
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codec_set_active(0x0);
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/* line in mute left & right*/
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wmcodec_write(LINVOL, 0x80);
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wmcodec_write(RINVOL, 0x80);
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/* set DACSEL=0, MUTEMIC=1 */
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wmcodec_write(AAPCTRL, 0x2);
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/* set POWEROFF=0 OUTPD=0 DACPD=1 */
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wmcodec_write(PWRMGMT, 0x6f);
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/* set POWEROFF=1 OUTPD=1 DACPD=1 */
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wmcodec_write(PWRMGMT, 0xff);
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}
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void audiohw_set_recvol(int left, int right, int type)
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{
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(void)left;
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(void)right;
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(void)type;
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}
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void audiohw_set_monitor(int enable)
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{
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(void)enable;
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}
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