291b2338c9
This patch has been tested on iPod 80 and 160slim, actually it works but some updates must be done to the final version: - unlimitted input buffer - decrease CHUNK_SIZE - use non-cached addresses instead of discard d-cache ??? Capture hardware versions: Ver iPod models capture support --- ----------- --------------- 0 80/160fat dock line-in 1 120/160slim dock line-in + jack mic HW version 1 includes an amplifier for the jack plug mic. Capture HW detection only tested on iPod 80 and 160slim. CODEC power: AFAIK, OF powers CS42L55 at VA=2.4V for capture (1.8V for playback) and turns on the ADC charge pump. CODEC datasheet recommmends to disable the charge pump for VA>2.1V. CS42L55 DS, s4.13 (Required Initialization Settings): for VA>2.1V, some adjustments "must" be done using undocummented "control port compensation" registers. OF does not modifies these registers when VA=2.4V. This patch configures capture HW in the same way as OF does. TODO: - ADC full scale voltage depends on VA, perform tests to find clipping levels for VA=1.8V and VA=2.4V Change-Id: I7e20fd3ecaa83b1c58d5c746f5153fe5c3891d75
97 lines
3 KiB
C
97 lines
3 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: audio-nano2g.c 23095 2009-10-11 09:17:12Z dave $
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*
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* Copyright (C) 2006 by Michael Sevakis
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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 "cpu.h"
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#include "audio.h"
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#include "sound.h"
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#include "pmu-target.h"
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extern int rec_hw_ver;
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#if INPUT_SRC_CAPS != 0
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void audio_set_output_source(int source)
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{
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if ((unsigned)source >= AUDIO_NUM_SOURCES)
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source = AUDIO_SRC_PLAYBACK;
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} /* audio_set_output_source */
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void audio_input_mux(int source, unsigned flags)
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{
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(void)flags;
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/* Prevent pops from unneeded switching */
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static int last_source = AUDIO_SRC_PLAYBACK;
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switch (source)
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{
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default: /* playback - no recording */
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source = AUDIO_SRC_PLAYBACK;
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case AUDIO_SRC_PLAYBACK:
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#ifdef HAVE_RECORDING
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if (source != last_source)
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{
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audiohw_set_monitor(false);
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audiohw_disable_recording();
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/* Vcodec = 1800mV (900mV + value*100mV) */
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pmu_ldo_set_voltage(3, 0x9);
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if (rec_hw_ver == 1)
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GPIOCMD = 0xe070e;
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}
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#endif
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break;
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#ifdef HAVE_MIC_REC
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case AUDIO_SRC_MIC: /* recording only */
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if (source != last_source)
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{
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if (rec_hw_ver == 1)
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GPIOCMD = 0xe070f;
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/* Vcodec = 2400mV (900mV + value*100mV) */
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pmu_ldo_set_voltage(3, 0xf);
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audiohw_set_monitor(false);
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audiohw_enable_recording(true); /* source mic */
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}
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break;
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#endif
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#ifdef HAVE_LINE_REC
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case AUDIO_SRC_LINEIN: /* recording only */
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if (source != last_source)
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{
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if (rec_hw_ver == 1)
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GPIOCMD = 0xe070e;
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/* Vcodec = 2400mV (900mV + value*100mV) */
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pmu_ldo_set_voltage(3, 0xf);
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audiohw_set_monitor(false);
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audiohw_enable_recording(false); /* source line */
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}
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break;
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#endif
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} /* end switch */
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last_source = source;
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} /* audio_input_mux */
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#endif /* INPUT_SRC_CAPS != 0 */
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