/*************************************************************************** * __________ __ ___. * 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 "config.h" #include "logf.h" #include "system.h" #include "string.h" #include "audio.h" #include "wmcodec.h" #include "audiohw.h" #include "i2s.h" #define IPOD_PCM_LEVEL 0x65 /* -6dB */ /* use zero crossing to reduce clicks during volume changes */ #define VOLUME_ZC_WAIT (1<<7) const struct sound_settings_info audiohw_settings[] = { [SOUND_VOLUME] = {"dB", 0, 1, -74, 6, -25}, /* HAVE_SW_TONE_CONTROLS */ [SOUND_BASS] = {"dB", 0, 1, -24, 24, 0}, [SOUND_TREBLE] = {"dB", 0, 1, -24, 24, 0}, [SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0}, [SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0}, [SOUND_STEREO_WIDTH] = {"%", 0, 1, 0, 255, 100}, #ifdef HAVE_RECORDING [SOUND_LEFT_GAIN] = {"dB", 1, 1,-128, 96, 0}, [SOUND_RIGHT_GAIN] = {"dB", 1, 1,-128, 96, 0}, [SOUND_MIC_GAIN] = {"dB", 1, 1,-128, 108, 16}, #endif }; /* 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 == mute (0x2f) */ if (db < VOLUME_MIN) { return 0x2f; } else { return((db/10)+0x30+73); } } /* convert tenth of dB volume (-780..0) to mixer volume register value */ int tenthdb2mixer(int db) { if (db < -660) /* 1.5 dB steps */ return (2640 - db) / 15; else if (db < -600) /* 0.75 dB steps */ return (990 - db) * 2 / 15; else if (db < -460) /* 0.5 dB steps */ return (460 - db) / 5; else /* 0.25 dB steps */ return -db * 2 / 5; } int audiohw_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 audiohw_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); audiohw_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 audiohw_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 audiohw_mute(1); } } int 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(LOUTVOL, VOLUME_ZC_WAIT | vol_l); wmcodec_write(ROUTVOL, VOLUME_ZC_WAIT | vol_r); return 0; } int audiohw_set_mixer_vol(int channel1, int channel2) { (void)channel1; (void)channel2; return 0; } void audiohw_set_bass(int value) { (void)value; } void audiohw_set_treble(int value) { (void)value; } /* Nice shutdown of WM8731 codec */ void audiohw_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 audiohw_set_nsorder(int order) { (void)order; } void audiohw_set_sample_rate(int sampling_control) { codec_set_active(0x0); wmcodec_write(SAMPCTRL, sampling_control); codec_set_active(0x1); } void audiohw_enable_recording(bool source_mic) { static int line_level = 0x17; static int mic_boost = true; codec_set_active(0x0); /* set 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_write(LOUTVOL, 0x0); /* headphone mute left */ wmcodec_write(ROUTVOL, 0x0); /* headphone mute right */ if(source_mic){ wmcodec_write(LINVOL, 0x80); /* line in mute left */ wmcodec_write(RINVOL, 0x80); /* line in mute right */ if (mic_boost) { wmcodec_write(AAPCTRL, 0x5); /* INSEL=mic, MIC_BOOST=enable */ } else { wmcodec_write(AAPCTRL, 0x4); /* INSEL=mic */ } } else { if (line_level == 0) { wmcodec_write(LINVOL, 0x80); wmcodec_write(RINVOL, 0x80); } else { wmcodec_write(LINVOL, line_level); wmcodec_write(RINVOL, line_level); } wmcodec_write(AAPCTRL, 0xa); /* BY PASS, mute mic, INSEL=line in */ } /* disable ADC high pass filter, mute dac */ wmcodec_write(DACCTRL, 0x9); /* power on (PWR_OFF=0) */ if(source_mic){ /* CLKOUTPD OSCPD OUTPD DACPD LINEINPD */ wmcodec_write(PWRMGMT, 0x79); } else { wmcodec_write(PWRMGMT, 0x7a); /* MICPD */ } codec_set_active(0x1); } void audiohw_disable_recording(void) { /* set DACMU=1 DEEMPH=0 */ wmcodec_write(DACCTRL, 0x8); /* ACTIVE=0 */ codec_set_active(0x0); /* line in mute left & right*/ wmcodec_write(LINVOL, 0x80); wmcodec_write(RINVOL, 0x80); /* set DACSEL=0, MUTEMIC=1 */ wmcodec_write(AAPCTRL, 0x2); /* set POWEROFF=0 OUTPD=0 DACPD=1 */ wmcodec_write(PWRMGMT, 0x6f); /* set POWEROFF=1 OUTPD=1 DACPD=1 */ wmcodec_write(PWRMGMT, 0xff); } void audiohw_set_recvol(int left, int right, int type) { (void)left; (void)right; (void)type; } void audiohw_set_monitor(int enable) { (void)enable; }