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
319 lines
10 KiB
C
319 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 WM8758 audio codec - based on datasheet for WM8983
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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 "system.h"
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#include "string.h"
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#include "audio.h"
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#include "wmcodec.h"
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#include "audiohw.h"
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#include "sound.h"
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/* shadow registers */
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static unsigned short eq1_reg = EQ1_EQ3DMODE | EQ_GAIN_VALUE(0);
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static unsigned short eq5_reg = EQ_GAIN_VALUE(0);
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/* convert tenth of dB volume (-89..6) to master volume register value */
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int tenthdb2master(int db)
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{
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/* att DAC AMP result
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+6dB 0 +6 96
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0dB 0 0 90
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-57dB 0 -57 33
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-58dB -1 -57 32
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-89dB -32 -57 1
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-90dB -oo -oo 0 */
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if (db < VOLUME_MIN) {
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return 0;
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} else {
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return (db-VOLUME_MIN)/10 + 1;
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}
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}
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/* helper function that calculates the register setting for amplifier and
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DAC volume out of the input from tenthdb2master() */
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static void get_volume_params(int db, int *dac, int *amp)
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{
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/* should never happen, set max volume for amp and dac */
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if (db > 96) {
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*dac = 255;
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*amp = 63;
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}
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/* set dac to max and set volume for amp (better snr) */
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else if (db > 32) {
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*dac = 255;
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*amp = (db-90)+57;
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}
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/* set amp to min and reduce dac output */
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else if (db > 0) {
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*dac = (db-33)*2 + 255;
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*amp = 0;
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}
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/* mute all */
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else {
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*dac = 0x00;
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*amp = 0x40;
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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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wmcodec_write(DACCTRL, DACCTRL_SOFTMUTE);
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} else {
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wmcodec_write(DACCTRL, DACCTRL_DACOSR128);
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}
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}
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void audiohw_preinit(void)
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{
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/* Set low bias mode */
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wmcodec_write(BIASCTRL, BIASCTRL_BIASCUT);
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/* Enable HPCOM, LINECOM */
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wmcodec_write(OUTCTRL, OUTCTRL_HP_COM | OUTCTRL_LINE_COM
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| OUTCTRL_TSOPCTRL | OUTCTRL_TSDEN | OUTCTRL_VROI);
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/* Mute all Outputs and set PGAs minimum gain */
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wmcodec_write(LOUT1VOL, 0x140);
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wmcodec_write(ROUT1VOL, 0x140);
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wmcodec_write(LOUT2VOL, 0x140);
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wmcodec_write(ROUT2VOL, 0x140);
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wmcodec_write(OUT3MIX, 0x40);
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wmcodec_write(OUT4MIX, 0x40);
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/* Enable L/ROUT1 */
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wmcodec_write(PWRMGMT2, PWRMGMT2_ROUT1EN | PWRMGMT2_LOUT1EN);
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/* Enable VMID independent current bias */
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wmcodec_write(OUT4TOADC, OUT4TOADC_POBCTRL);
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/* Enable required DACs and mixers */
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wmcodec_write(PWRMGMT3, PWRMGMT3_RMIXEN | PWRMGMT3_LMIXEN
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| PWRMGMT3_DACENR | PWRMGMT3_DACENL);
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/* Enable VMIDSEL, BIASEN, BUFIOEN */
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wmcodec_write(PWRMGMT1, PWRMGMT1_PLLEN | PWRMGMT1_BIASEN
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| PWRMGMT1_BUFIOEN | PWRMGMT1_VMIDSEL_10K);
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/* Setup digital interface, input amplifiers, PLL, ADCs and DACs */
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wmcodec_write(AINTFCE, AINTFCE_IWL_16BIT | AINTFCE_FORMAT_I2S);
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wmcodec_write(CLKCTRL, CLKCTRL_MS); /* WM8758 is clock master */
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audiohw_set_frequency(HW_FREQ_44);
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wmcodec_write(LOUTMIX, LOUTMIX_DACL2LMIX);
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wmcodec_write(ROUTMIX, ROUTMIX_DACR2RMIX);
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/* Disable VMID independent current bias */
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wmcodec_write(OUT4TOADC, 0);
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}
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void audiohw_postinit(void)
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{
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wmcodec_write(PWRMGMT1, PWRMGMT1_PLLEN | PWRMGMT1_BIASEN
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| PWRMGMT1_BUFIOEN | PWRMGMT1_VMIDSEL_500K);
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/* lower the VMID power consumption */
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wmcodec_write(BIASCTRL, 0);
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audiohw_mute(false);
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}
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void audiohw_set_master_vol(int vol_l, int vol_r)
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{
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int dac_l, amp_l, dac_r, amp_r;
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get_volume_params(vol_l, &dac_l, &_l);
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get_volume_params(vol_r, &dac_r, &_r);
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/* set DAC
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Important: DAC is global and will also affect lineout */
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wmcodec_write(LDACVOL, dac_l);
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wmcodec_write(RDACVOL, dac_r | RDACVOL_DACVU);
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/* set headphone amp OUT1 */
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wmcodec_write(LOUT1VOL, amp_l | LOUT1VOL_LOUT1ZC);
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wmcodec_write(ROUT1VOL, amp_r | ROUT1VOL_ROUT1ZC | ROUT1VOL_OUT1VU);
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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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int dac_l, amp_l, dac_r, amp_r;
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get_volume_params(vol_l, &dac_l, &_l);
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get_volume_params(vol_r, &dac_r, &_r);
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/* set lineout amp OUT2 */
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wmcodec_write(LOUT2VOL, amp_l | LOUT2VOL_LOUT2ZC);
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wmcodec_write(ROUT2VOL, amp_r | ROUT2VOL_ROUT2ZC | ROUT2VOL_OUT2VU);
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}
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void audiohw_enable_lineout(bool enable)
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{
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/* Initialize data without lineout enabling. */
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int pwrmgmt3_data = PWRMGMT3_RMIXEN | PWRMGMT3_LMIXEN
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| PWRMGMT3_DACENR | PWRMGMT3_DACENL;
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/* Set lineout (OUT2), if enabled. */
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if (enable)
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pwrmgmt3_data |= PWRMGMT3_LOUT2EN | PWRMGMT3_ROUT2EN;
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/* Set register. */
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wmcodec_write(PWRMGMT3, pwrmgmt3_data);
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}
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void audiohw_set_bass(int value)
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{
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eq1_reg = (eq1_reg & ~EQ_GAIN_MASK) | EQ_GAIN_VALUE(value);
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wmcodec_write(EQ1, eq1_reg);
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}
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void audiohw_set_bass_cutoff(int value)
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{
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eq1_reg = (eq1_reg & ~EQ_CUTOFF_MASK) | EQ_CUTOFF_VALUE(value);
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wmcodec_write(EQ1, eq1_reg);
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}
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void audiohw_set_treble(int value)
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{
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eq5_reg = (eq5_reg & ~EQ_GAIN_MASK) | EQ_GAIN_VALUE(value);
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wmcodec_write(EQ5, eq5_reg);
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}
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void audiohw_set_treble_cutoff(int value)
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{
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eq5_reg = (eq5_reg & ~EQ_CUTOFF_MASK) | EQ_CUTOFF_VALUE(value);
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wmcodec_write(EQ5, eq5_reg);
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}
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/* Nice shutdown of WM8758 codec */
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void audiohw_close(void)
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{
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audiohw_mute(true);
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/* Disable Thermal shutdown */
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wmcodec_write(OUTCTRL, OUTCTRL_HP_COM | OUTCTRL_VROI);
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/* Enable VMIDTOG */
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wmcodec_write(OUT4TOADC, OUT4TOADC_VMIDTOG);
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/* Disable VMIDSEL and BUFIOEN */
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wmcodec_write(PWRMGMT1, PWRMGMT1_PLLEN | PWRMGMT1_BIASEN
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| PWRMGMT1_VMIDSEL_OFF);
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/* Wait for VMID to discharge */
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sleep(3*HZ/10);
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/* Power off registers */
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wmcodec_write(PWRMGMT2, 0);
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wmcodec_write(PWRMGMT3, 0);
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wmcodec_write(PWRMGMT1, 0);
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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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/* CLKCTRL_MCLKDIV_MASK and ADDCTRL_SR_MASK don't overlap,
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so they can both fit in one byte. Bit 0 selects PLL
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configuration via pll_setups.
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*/
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static const unsigned char freq_setups[HW_NUM_FREQ] =
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{
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[HW_FREQ_48] = CLKCTRL_MCLKDIV_2 | ADDCTRL_SR_48kHz | 1,
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[HW_FREQ_44] = CLKCTRL_MCLKDIV_2 | ADDCTRL_SR_48kHz,
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[HW_FREQ_32] = CLKCTRL_MCLKDIV_3 | ADDCTRL_SR_32kHz | 1,
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[HW_FREQ_24] = CLKCTRL_MCLKDIV_4 | ADDCTRL_SR_24kHz | 1,
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[HW_FREQ_22] = CLKCTRL_MCLKDIV_4 | ADDCTRL_SR_24kHz,
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[HW_FREQ_16] = CLKCTRL_MCLKDIV_6 | ADDCTRL_SR_16kHz | 1,
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[HW_FREQ_12] = CLKCTRL_MCLKDIV_8 | ADDCTRL_SR_12kHz | 1,
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[HW_FREQ_11] = CLKCTRL_MCLKDIV_8 | ADDCTRL_SR_12kHz,
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[HW_FREQ_8] = CLKCTRL_MCLKDIV_12 | ADDCTRL_SR_8kHz | 1
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};
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/* Each PLL configuration is an array consisting of
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{ PLLN, PLLK1, PLLK2, PLLK3 }. The WM8983 datasheet requires
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5 < PLLN < 13, and states optimum is PLLN = 8, f2 = 90 MHz
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*/
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static const unsigned short pll_setups[2][4] =
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{
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/* f1 = 12 MHz, R = 7.5264, f2 = 90.3168 MHz, fPLLOUT = 22.5792 MHz */
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{ PLLN_PLLPRESCALE | 0x7, 0x21, 0x161, 0x26 },
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/* f1 = 12 MHz, R = 8.192, f2 = 98.304 MHz, fPLLOUT = 24.576 MHz */
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{ PLLN_PLLPRESCALE | 0x8, 0xC, 0x93, 0xE9 }
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};
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int i;
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/* PLLN, PLLK1, PLLK2, PLLK3 are contiguous (at 0x24 to 0x27) */
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for (i = 0; i < 4; i++)
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wmcodec_write(PLLN + i, pll_setups[freq_setups[fsel] & 1][i]);
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/* CLKCTRL_MCLKDIV divides fPLLOUT to get SYSCLK (256 * sample rate) */
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wmcodec_write(CLKCTRL, CLKCTRL_CLKSEL
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| (freq_setups[fsel] & CLKCTRL_MCLKDIV_MASK)
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| CLKCTRL_BCLKDIV_2 | CLKCTRL_MS);
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/* set ADC and DAC filter characteristics according to sample rate */
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wmcodec_write(ADDCTRL, (freq_setups[fsel] & ADDCTRL_SR_MASK)
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| ADDCTRL_SLOWCLKEN);
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/* SLOWCLK enabled for zero cross timeout to work */
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}
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void audiohw_enable_recording(bool source_mic)
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{
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(void)source_mic; /* We only have a line-in (I think) */
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wmcodec_write(PWRMGMT2, PWRMGMT2_ROUT1EN | PWRMGMT2_LOUT1EN
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| PWRMGMT2_INPGAENR | PWRMGMT2_INPGAENL
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| PWRMGMT2_ADCENR | PWRMGMT2_ADCENL);
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wmcodec_write(INCTRL, INCTRL_R2_2INPGA | INCTRL_L2_2INPGA);
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wmcodec_write(LADCBOOST, LADCBOOST_L2_2BOOST(5));
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wmcodec_write(RADCBOOST, RADCBOOST_R2_2BOOST(5));
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/* Enable monitoring */
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wmcodec_write(LOUTMIX, LOUTMIX_BYP2LMIXVOL(5)
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| LOUTMIX_BYPL2LMIX | LOUTMIX_DACL2LMIX);
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wmcodec_write(ROUTMIX, ROUTMIX_BYP2RMIXVOL(5)
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| ROUTMIX_BYPR2RMIX | ROUTMIX_DACR2RMIX);
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}
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void audiohw_disable_recording(void)
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{
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wmcodec_write(LOUTMIX, LOUTMIX_DACL2LMIX);
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wmcodec_write(ROUTMIX, ROUTMIX_DACR2RMIX);
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wmcodec_write(PWRMGMT2, PWRMGMT2_ROUT1EN | PWRMGMT2_LOUT1EN);
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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:
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right = left;
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/* fall through */
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case AUDIO_GAIN_LINEIN:
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wmcodec_write(LINPGAVOL, LINPGAVOL_INPGAZCL
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| (left & LINPGAVOL_INPGAVOL_MASK));
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wmcodec_write(RINPGAVOL, RINPGAVOL_INPGAVU | RINPGAVOL_INPGAZCR
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| (right & RINPGAVOL_INPGAVOL_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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(void)enable;
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}
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