0fc7fb3686
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15691 a1c6a512-1295-4272-9138-f99709370657
330 lines
9.5 KiB
C
330 lines
9.5 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 "config.h"
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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 "wmcodec.h"
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#include "audiohw.h"
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#include "i2s.h"
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const struct sound_settings_info audiohw_settings[] = {
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[SOUND_VOLUME] = {"dB", 0, 1, -74, 6, -25},
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/* HAVE_SW_TONE_CONTROLS */
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[SOUND_BASS] = {"dB", 0, 1, -24, 24, 0},
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[SOUND_TREBLE] = {"dB", 0, 1, -24, 24, 0},
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[SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0},
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[SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0},
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[SOUND_STEREO_WIDTH] = {"%", 0, 5, 0, 250, 100},
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#ifdef HAVE_RECORDING
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[SOUND_LEFT_GAIN] = {"dB", 1, 1, 0, 31, 23},
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[SOUND_RIGHT_GAIN] = {"dB", 1, 1, 0, 31, 23},
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[SOUND_MIC_GAIN] = {"dB", 1, 1, 0, 1, 0},
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#endif
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};
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/* Init values/shadows
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* Ignore bit 8 since that only specifies "both" for updating
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* gains */
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static unsigned char wm8731_regs[7] =
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{
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[LINVOL] = LINVOL_LINMUTE,
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[RINVOL] = RINVOL_RINMUTE,
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[LOUTVOL] = ROUTVOL_RZCEN,
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[ROUTVOL] = ROUTVOL_RZCEN,
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[AAPCTRL] = AAPCTRL_MUTEMIC | AAPCTRL_DACSEL,
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[DAPCTRL] = DAPCTRL_DACMU | DAPCTRL_DEEMP_44KHz | DAPCTRL_ADCHPD,
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[PDCTRL] = PDCTRL_LINEINPD | PDCTRL_MICPD | PDCTRL_ADCPD |
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PDCTRL_OUTPD | PDCTRL_OSCPD | PDCTRL_CLKOUTPD,
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};
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static void wm8731_write(int reg, unsigned val)
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{
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wm8731_regs[reg] = (unsigned char)val;
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wmcodec_write(reg, val);
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}
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static void wm8731_write_and(int reg, unsigned bits)
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{
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wm8731_write(reg, wm8731_regs[reg] & bits);
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}
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static void wm8731_write_or(int reg, unsigned bits)
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{
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wm8731_write(reg, wm8731_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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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 sound_val2phys(int setting, int value)
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{
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int result;
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switch(setting)
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{
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case SOUND_LEFT_GAIN:
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case SOUND_RIGHT_GAIN:
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result = (value - 23) * 15;
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break;
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case SOUND_MIC_GAIN:
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result = value * 200;
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break;
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default:
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result = value;
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break;
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}
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return result;
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}
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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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wm8731_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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wm8731_write_and(DAPCTRL, ~DAPCTRL_DACMU);
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}
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}
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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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wmcodec_write(ACTIVECTRL, active ? ACTIVECTRL_ACTIVE : 0);
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}
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void audiohw_preinit(void)
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{
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i2s_reset();
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/* POWER UP SEQUENCE */
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/* 1) Switch on power supplies. By default the WM8731 is in Standby Mode,
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* the DAC is digitally muted and the Audio Interface and Outputs are
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* all OFF. */
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wmcodec_write(RESET, RESET_RESET);
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/* 2) Set all required bits in the Power Down register (0Ch) to '0';
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* EXCEPT the OUTPD bit, this should be set to '1' (Default). */
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wm8731_write(PDCTRL, wm8731_regs[PDCTRL]);
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/* 3) Set required values in all other registers except 12h (Active). */
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wmcodec_write(AINTFCE, AINTFCE_FORMAT_I2S | AINTFCE_IWL_16BIT |
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AINTFCE_MS);
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wm8731_write(AAPCTRL, wm8731_regs[AAPCTRL]);
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wm8731_write(DAPCTRL, wm8731_regs[DAPCTRL]);
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wmcodec_write(SAMPCTRL, WM8731_USB24_44100HZ);
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/* 5) The last write of the sequence should be setting OUTPD to '0'
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* (active) in register 0Ch, enabling the DAC signal path, free
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* of any significant power-up noise. */
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wm8731_write_and(PDCTRL, ~PDCTRL_OUTPD);
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}
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void audiohw_postinit(void)
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{
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sleep(HZ);
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/* 4) Set the 'Active' bit in register 12h. */
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codec_set_active(true);
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audiohw_mute(false);
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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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}
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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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wm8731_write(LOUTVOL, LOUTVOL_LZCEN | (vol_l & LOUTVOL_LHPVOL_MASK));
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wm8731_write(ROUTVOL, ROUTVOL_RZCEN | (vol_r & ROUTVOL_RHPVOL_MASK));
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return 0;
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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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/* POWER DOWN SEQUENCE */
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/* 1) Set the OUTPD bit to '1' (power down). */
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wm8731_write_or(PDCTRL, PDCTRL_OUTPD);
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/* 2) Remove the WM8731 supplies. */
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}
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void audiohw_set_nsorder(int order)
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{
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static const unsigned char deemp[4] =
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{
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DAPCTRL_DEEMP_DISABLE,
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DAPCTRL_DEEMP_32KHz,
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DAPCTRL_DEEMP_44KHz,
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DAPCTRL_DEEMP_48KHz
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};
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if ((unsigned)order >= ARRAYLEN(deemp))
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order = 0;
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wm8731_write(DAPCTRL,
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(wm8731_regs[DAPCTRL] & ~DAPCTRL_DEEMP_MASK) | deemp[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(false);
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wmcodec_write(SAMPCTRL, sampling_control);
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codec_set_active(true);
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}
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void audiohw_enable_recording(bool source_mic)
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{
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codec_set_active(false);
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wm8731_regs[PDCTRL] &= ~PDCTRL_ADCPD;
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/* NOTE: When switching to digital monitoring we will not want
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* the DAC disabled. */
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wm8731_regs[PDCTRL] |= PDCTRL_DACPD;
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wm8731_regs[AAPCTRL] &= ~AAPCTRL_DACSEL;
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if (source_mic) {
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wm8731_write_or(LINVOL, LINVOL_LINMUTE);
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wm8731_write_or(RINVOL, RINVOL_RINMUTE);
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wm8731_regs[PDCTRL] &= ~PDCTRL_MICPD;
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wm8731_regs[PDCTRL] |= PDCTRL_LINEINPD;
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wm8731_regs[AAPCTRL] |= AAPCTRL_INSEL | AAPCTRL_SIDETONE;
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wm8731_regs[AAPCTRL] &= ~(AAPCTRL_MUTEMIC | AAPCTRL_BYPASS);
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} else {
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wm8731_regs[PDCTRL] |= PDCTRL_MICPD;
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wm8731_regs[PDCTRL] &= ~PDCTRL_LINEINPD;
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wm8731_regs[AAPCTRL] |= AAPCTRL_MUTEMIC | AAPCTRL_BYPASS;
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wm8731_regs[AAPCTRL] &= ~(AAPCTRL_INSEL | AAPCTRL_SIDETONE);
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}
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wm8731_write(PDCTRL, wm8731_regs[PDCTRL]);
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wm8731_write(AAPCTRL, wm8731_regs[AAPCTRL]);
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if (!source_mic) {
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wm8731_write_and(LINVOL, ~LINVOL_LINMUTE);
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wm8731_write_and(RINVOL, ~RINVOL_RINMUTE);
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}
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codec_set_active(true);
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}
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void audiohw_disable_recording(void)
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{
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codec_set_active(false);
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/* Mute inputs */
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wm8731_write_or(LINVOL, LINVOL_LINMUTE);
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wm8731_write_or(RINVOL, RINVOL_RINMUTE);
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wm8731_write_or(AAPCTRL, AAPCTRL_MUTEMIC);
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/* Turn off input analog audio paths */
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wm8731_regs[AAPCTRL] &= ~(AAPCTRL_BYPASS | AAPCTRL_SIDETONE);
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wm8731_write(AAPCTRL, wm8731_regs[AAPCTRL]);
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/* Set power config */
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wm8731_regs[PDCTRL] &= ~PDCTRL_DACPD;
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wm8731_regs[PDCTRL] |= PDCTRL_MICPD | PDCTRL_LINEINPD |
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PDCTRL_ADCPD;
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wm8731_write(PDCTRL, wm8731_regs[PDCTRL]);
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/* Select DAC */
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wm8731_write_or(AAPCTRL, AAPCTRL_DACSEL);
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codec_set_active(true);
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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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if (left > 0) {
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wm8731_write_or(AAPCTRL, AAPCTRL_MIC_BOOST);
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}
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else {
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wm8731_write_and(AAPCTRL, ~AAPCTRL_MIC_BOOST);
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}
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break;
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case AUDIO_GAIN_LINEIN:
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wm8731_regs[LINVOL] &= ~LINVOL_MASK;
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wm8731_write(LINVOL, wm8731_regs[LINVOL] | (left & LINVOL_MASK));
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wm8731_regs[RINVOL] &= ~RINVOL_MASK;
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wm8731_write(RINVOL, wm8731_regs[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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{
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wm8731_write_and(PDCTRL, ~PDCTRL_LINEINPD);
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wm8731_write_or(AAPCTRL, AAPCTRL_BYPASS);
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}
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else {
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wm8731_write_and(AAPCTRL, ~AAPCTRL_BYPASS);
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wm8731_write_or(PDCTRL, PDCTRL_LINEINPD);
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}
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}
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