0c7b787398
This is going right in since it's long overdue. If anything is goofed, drop me a line or just tweak it yourself if you know what's wrong. :-) Make HW/SW codec interface more uniform when emulating HW functionality on SWCODEC for functions such as "audiohw_set_pitch". The firmware-to- DSP plumbing is in firmware/drivers/audiohw-swcodec.c. "sound_XXX" APIs are all in sound.c with none in DSP code any longer. Reduce number of settings definitions needed by each codec by providing defaults for common ones like balance, channels and SW tone controls. Remove need for separate SIM code and tables and add virtual codec header for hosted targets. Change-Id: I3f23702bca054fc9bda40f49824ce681bb7f777b
336 lines
10 KiB
C
336 lines
10 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 WM8975 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 December 2005
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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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 "logf.h"
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#include "system.h"
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#include "string.h"
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#include "audio.h"
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#include "sound.h"
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#include "wmcodec.h"
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#include "audiohw.h"
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static unsigned short wm8975_regs[WM8975_NUM_REGISTERS] =
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{
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[LINVOL] = LINVOL_LZCEN | 23, /* 0dB */
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[RINVOL] = RINVOL_RIVU | RINVOL_RZCEN | 23, /* 0dB */
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[DAPCTRL] = DAPCTRL_DACMU,
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/* This reduces the popping noise during codec powerup
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noticably, especially with high-impedance loads.
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We might want to change this for all targets,
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but it has only been tested on iPod Nano 2G so far. */
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#ifdef IPOD_NANO2G
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[PWRMGMT1] = PWRMGMT1_VMIDSEL_500K | PWRMGMT1_VREF,
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#else
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[PWRMGMT1] = PWRMGMT1_VMIDSEL_5K | PWRMGMT1_VREF,
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#endif
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[PWRMGMT2] = PWRMGMT2_DACL | PWRMGMT2_DACR | PWRMGMT2_LOUT1
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| PWRMGMT2_ROUT1 | PWRMGMT2_LOUT2 | PWRMGMT2_ROUT2,
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};
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static void wm8975_write(int reg, unsigned val)
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{
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if (WM8975_NUM_REGISTERS > reg) {
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wm8975_regs[reg] = val;
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wmcodec_write(reg, val);
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}
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}
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static void wm8975_write_and(int reg, unsigned bits)
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{
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wm8975_write(reg, wm8975_regs[reg] & bits);
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}
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static void wm8975_write_or(int reg, unsigned bits)
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{
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wm8975_write(reg, wm8975_regs[reg] | bits);
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}
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/* convert tenth of dB volume (-730..60) to master volume register value */
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static int vol_tenthdb2hw(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..0000000 == mute (0x2f) */
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if (db < VOLUME_MIN) {
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return 0x0;
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} else {
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return((db/10)+73+0x30);
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}
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}
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static void audiohw_mute(bool mute)
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{
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if (mute) {
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/* Set DACMU = 1 to soft-mute the audio DACs. */
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wm8975_write_or(DAPCTRL, DAPCTRL_DACMU);
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} else {
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/* Set DACMU = 0 to soft-un-mute the audio DACs. */
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wm8975_write_and(DAPCTRL, ~DAPCTRL_DACMU);
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}
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}
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#define IPOD_PCM_LEVEL 0x65 /* -6dB */
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/* This reduces the popping noise during codec powerup
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noticably, especially with high-impedance loads.
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We might want to change this for all targets,
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but it has only been tested on iPod Nano 2G so far. */
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#ifdef IPOD_NANO2G
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void audiohw_preinit(void)
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{
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wm8975_write(RESET, RESET_RESET);
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wm8975_write(AINTFCE, AINTFCE_MS | AINTFCE_LRP_I2S_RLO
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| AINTFCE_IWL_16BIT | AINTFCE_FORMAT_I2S);
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wm8975_write(LOUTMIX1, LOUTMIX1_LD2LO | LOUTMIX1_LI2LOVOL(5));
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wm8975_write(ROUTMIX2, ROUTMIX2_RD2RO | ROUTMIX2_RI2ROVOL(5));
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wm8975_write(PWRMGMT1, wm8975_regs[PWRMGMT1]);
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wm8975_write(PWRMGMT2, wm8975_regs[PWRMGMT2]);
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}
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void audiohw_postinit(void)
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{
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wm8975_regs[PWRMGMT1] &= ~PWRMGMT1_VMIDSEL_MASK;
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wm8975_regs[PWRMGMT1] |= PWRMGMT1_VMIDSEL_50K;
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wm8975_write(PWRMGMT1, wm8975_regs[PWRMGMT1]);
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audiohw_mute(false);
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}
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#else /* !IPOD_NANO2G */
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void audiohw_preinit(void)
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{
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/* POWER UP SEQUENCE */
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wm8975_write(RESET, RESET_RESET);
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/* 2. Enable Vmid and VREF, quick startup. */
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wm8975_write(PWRMGMT1, wm8975_regs[PWRMGMT1]);
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sleep(HZ/50);
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wm8975_regs[PWRMGMT1] &= ~PWRMGMT1_VMIDSEL_MASK;
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wm8975_write(PWRMGMT1, wm8975_regs[PWRMGMT1] | PWRMGMT1_VMIDSEL_50K);
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/* 4. Enable DACs, line and headphone output buffers as required. */
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wm8975_write(PWRMGMT2, wm8975_regs[PWRMGMT2]);
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wm8975_write(AINTFCE, AINTFCE_MS | AINTFCE_LRP_I2S_RLO
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| AINTFCE_IWL_16BIT | AINTFCE_FORMAT_I2S);
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wm8975_write(DAPCTRL, wm8975_regs[DAPCTRL] );
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/* Set sample rate. */
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wm8975_write(SAMPCTRL, WM8975_44100HZ);
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/* set the volume to -6dB */
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wm8975_write(LOUT1VOL, LOUT1VOL_LO1ZC | IPOD_PCM_LEVEL);
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wm8975_write(ROUT1VOL, ROUT1VOL_RO1VU | ROUT1VOL_RO1ZC | IPOD_PCM_LEVEL);
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wm8975_write(LOUTMIX1, LOUTMIX1_LD2LO| LOUTMIX1_LI2LOVOL(5));
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wm8975_write(LOUTMIX2, LOUTMIX2_RI2LOVOL(5));
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wm8975_write(ROUTMIX1, ROUTMIX1_LI2ROVOL(5));
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wm8975_write(ROUTMIX2, ROUTMIX2_RD2RO| ROUTMIX2_RI2ROVOL(5));
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wm8975_write(MOUTMIX1, 0);
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wm8975_write(MOUTMIX2, 0);
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}
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void audiohw_postinit(void)
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{
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audiohw_mute(false);
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}
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#endif
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void audiohw_set_volume(int vol_l, int vol_r)
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{
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vol_l = vol_tenthdb2hw(vol_l);
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vol_r = vol_tenthdb2hw(vol_r);
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/* OUT1 */
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wm8975_write(LOUT1VOL, LOUT1VOL_LO1ZC | vol_l);
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wm8975_write(ROUT1VOL, ROUT1VOL_RO1VU | ROUT1VOL_RO1ZC | vol_r);
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}
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void audiohw_set_lineout_vol(int vol_l, int vol_r)
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{
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vol_l = vol_tenthdb2hw(vol_l);
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vol_r = vol_tenthdb2hw(vol_r);
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/* OUT2 */
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wm8975_write(LOUT2VOL, LOUT2VOL_LO2ZC | vol_l);
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wm8975_write(ROUT2VOL, ROUT2VOL_RO2VU | ROUT2VOL_RO2ZC | vol_r);
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}
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void audiohw_enable_lineout(bool enable)
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{
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if (enable) {
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/* Enable lineout */
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wm8975_regs[PWRMGMT2] |= (PWRMGMT2_LOUT2 | PWRMGMT2_ROUT2);
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} else {
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/* Disable lineout */
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wm8975_regs[PWRMGMT2] &= ~(PWRMGMT2_LOUT2 | PWRMGMT2_ROUT2);
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}
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wm8975_write(PWRMGMT2, wm8975_regs[PWRMGMT2]);
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}
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void audiohw_set_bass(int value)
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{
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const int regvalues[] = {
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11, 10, 10, 9, 8, 8, 0xf, 6, 6, 5, 4, 4, 3, 2, 2, 1
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};
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if ((value >= -6) && (value <= 9)) {
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/* We use linear bass control with 200 Hz cutoff */
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wm8975_write(BASSCTRL, regvalues[value + 6] | BASSCTRL_BC);
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}
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}
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void audiohw_set_treble(int value)
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{
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const int regvalues[] = {
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11, 10, 10, 9, 8, 8, 0xf, 6, 6, 5, 4, 4, 3, 2, 2, 1
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};
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if ((value >= -6) && (value <= 9)) {
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/* We use linear treble control with 4 kHz cutoff */
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wm8975_write(TREBCTRL, regvalues[value + 6] | TREBCTRL_TC);
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}
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}
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/* Nice shutdown of WM8975 codec */
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void audiohw_close(void)
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{
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audiohw_mute(true);
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/* 2. Disable all output buffers. */
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wm8975_write(PWRMGMT2, 0x0);
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/* 3. Switch off the power supplies. */
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wm8975_write(PWRMGMT1, 0x0);
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}
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/* Note: Disable output before calling this function */
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void audiohw_set_frequency(int fsel)
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{
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(void)fsel;
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}
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#ifdef HAVE_RECORDING
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void audiohw_enable_recording(bool source_mic)
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{
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wm8975_regs[PWRMGMT1] |= PWRMGMT1_AINL | PWRMGMT1_AINR
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| PWRMGMT1_ADCL | PWRMGMT1_ADCR;
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wm8975_write(PWRMGMT1, wm8975_regs[PWRMGMT1]);
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/* NOTE: When switching to digital monitoring we will not want
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* the DACs disabled. Also the outputs shouldn't be disabled
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* when recording from line in (dock connector) - needs testing. */
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wm8975_regs[PWRMGMT2] &= ~(PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1
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| PWRMGMT2_LOUT2 | PWRMGMT2_ROUT2);
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wm8975_write(PWRMGMT2, wm8975_regs[PWRMGMT2]);
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wm8975_write_or(LINVOL, LINVOL_LINMUTE);
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wm8975_write_or(RINVOL, RINVOL_RINMUTE);
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wm8975_write(ADDCTRL3, ADDCTRL3_VROI);
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if (source_mic) {
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wm8975_write(ADDCTRL1, ADDCTRL1_VSEL_LOWBIAS | ADDCTRL1_DATSEL_RADC
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| ADDCTRL1_TOEN);
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wm8975_write(ADCLPATH, 0);
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wm8975_write(ADCRPATH, ADCRPATH_RINSEL_RIN2 | ADCRPATH_RMICBOOST_20dB);
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} else {
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wm8975_write(ADDCTRL1, ADDCTRL1_VSEL_LOWBIAS | ADDCTRL1_DATSEL_NORMAL
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| ADDCTRL1_TOEN);
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wm8975_write(ADCLPATH, ADCLPATH_LINSEL_LIN1 | ADCLPATH_LMICBOOST_OFF);
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wm8975_write(ADCRPATH, ADCRPATH_RINSEL_RIN1 | ADCRPATH_RMICBOOST_OFF);
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}
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wm8975_write_and(LINVOL, ~LINVOL_LINMUTE);
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wm8975_write_and(RINVOL, ~RINVOL_RINMUTE);
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}
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void audiohw_disable_recording(void)
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{
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/* mute inputs */
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wm8975_write_or(LINVOL, LINVOL_LINMUTE);
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wm8975_write_or(RINVOL, RINVOL_RINMUTE);
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wm8975_write(ADDCTRL3, 0);
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wm8975_regs[PWRMGMT2] |= PWRMGMT2_DACL | PWRMGMT2_DACR
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| PWRMGMT2_LOUT1 | PWRMGMT2_ROUT1
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| PWRMGMT2_LOUT2 | PWRMGMT2_ROUT2;
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wm8975_write(PWRMGMT2, wm8975_regs[PWRMGMT2]);
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wm8975_regs[PWRMGMT1] &= ~(PWRMGMT1_AINL | PWRMGMT1_AINR
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| PWRMGMT1_ADCL | PWRMGMT1_ADCR);
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wm8975_write(PWRMGMT1, wm8975_regs[PWRMGMT1]);
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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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switch (type)
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{
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case AUDIO_GAIN_MIC: /* Mic uses right ADC */
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wm8975_regs[RINVOL] &= ~RINVOL_MASK;
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wm8975_write_or(RINVOL, left & RINVOL_MASK);
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break;
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case AUDIO_GAIN_LINEIN:
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wm8975_regs[LINVOL] &= ~LINVOL_MASK;
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wm8975_write_or(LINVOL, left & LINVOL_MASK);
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wm8975_regs[RINVOL] &= ~RINVOL_MASK;
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wm8975_write_or(RINVOL, right & RINVOL_MASK);
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break;
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default:
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return;
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}
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}
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void audiohw_set_monitor(bool enable)
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{
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if (enable) {
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/* set volume to 0 dB */
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wm8975_regs[LOUTMIX1] &= ~LOUTMIX1_LI2LOVOL_MASK;
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wm8975_regs[LOUTMIX1] |= LOUTMIX1_LI2LOVOL(2);
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wm8975_regs[ROUTMIX2] &= ~ROUTMIX2_RI2ROVOL_MASK;
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wm8975_regs[ROUTMIX2] |= ROUTMIX2_RI2ROVOL(2);
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/* set mux to line input */
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wm8975_write_and(LOUTMIX1, ~LOUTMIX1_LMIXSEL_MASK);
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wm8975_write_and(ROUTMIX1, ~ROUTMIX1_RMIXSEL_MASK);
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/* enable bypass */
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wm8975_write_or(LOUTMIX1, LOUTMIX1_LI2LO);
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wm8975_write_or(ROUTMIX2, ROUTMIX2_RI2RO);
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} else {
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/* disable bypass */
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wm8975_write_and(LOUTMIX1, ~LOUTMIX1_LI2LO);
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wm8975_write_and(ROUTMIX2, ~ROUTMIX2_RI2RO);
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}
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}
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#endif /* HAVE_RECORDING */
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