5df4405317
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@17327 a1c6a512-1295-4272-9138-f99709370657
361 lines
11 KiB
C
361 lines
11 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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* Copyright (C) 2008 by Michael Sevakis
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*
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* Driver for WM8978 audio codec
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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 "system.h"
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#include "audiohw.h"
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#include "wmcodec.h"
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#include "audio.h"
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//#define LOGF_ENABLE
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#include "logf.h"
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#define HW_VOL_MIN 0
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#define HW_VOL_MUTE 0
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#define HW_VOL_MAX 96
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/* TODO: Define/refine an API for special hardware steps outside the
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* main codec driver such as special GPIO handling. */
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extern void audiohw_enable_headphone_jack(bool enable);
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const struct sound_settings_info audiohw_settings[] =
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{
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[SOUND_VOLUME] = {"dB", 0, 1, -90, 6, -25},
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[SOUND_BASS] = {"dB", 0, 1, -12, 12, 0},
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[SOUND_TREBLE] = {"dB", 0, 1, -12, 12, 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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[SOUND_LEFT_GAIN] = {"dB", 1, 1,-128, 96, 0},
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[SOUND_RIGHT_GAIN] = {"dB", 1, 1,-128, 96, 0},
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#if 0
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[SOUND_MIC_GAIN] = {"dB", 1, 1,-128, 108, 16},
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#endif
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#if 0
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[SOUND_BASS_CUTOFF] = {"", 0, 1, 1, 4, 1},
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[SOUND_TREBLE_CUTOFF] = {"", 0, 1, 1, 4, 1},
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#endif
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};
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static uint16_t wmc_regs[WMC_NUM_REGISTERS] =
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{
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/* Initialized with post-reset default values - the 2-wire interface
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* cannot be read. Or-in additional bits desired for some registers. */
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[0 ... WMC_NUM_REGISTERS-1] = 0x8000, /* To ID invalids in gaps */
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[WMC_SOFTWARE_RESET] = 0x000,
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[WMC_POWER_MANAGEMENT1] = 0x000,
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[WMC_POWER_MANAGEMENT2] = 0x000,
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[WMC_POWER_MANAGEMENT3] = 0x000,
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[WMC_AUDIO_INTERFACE] = 0x050,
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[WMC_COMPANDING_CTRL] = 0x000,
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[WMC_CLOCK_GEN_CTRL] = 0x140,
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[WMC_ADDITIONAL_CTRL] = 0x000,
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[WMC_GPIO] = 0x000,
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[WMC_JACK_DETECT_CONTROL1] = 0x000,
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[WMC_DAC_CONTROL] = 0x000,
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[WMC_LEFT_DAC_DIGITAL_VOL] = 0x0ff | WMC_VU,
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[WMC_RIGHT_DAC_DIGITAL_VOL] = 0x0ff | WMC_VU,
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[WMC_JACK_DETECT_CONTROL2] = 0x000,
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[WMC_ADC_CONTROL] = 0x100,
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[WMC_LEFT_ADC_DIGITAL_VOL] = 0x0ff | WMC_VU,
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[WMC_RIGHT_ADC_DIGITAL_VOL] = 0x0ff | WMC_VU,
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[WMC_EQ1_LOW_SHELF] = 0x12c,
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[WMC_EQ2_PEAK1] = 0x02c,
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[WMC_EQ3_PEAK2] = 0x02c,
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[WMC_EQ4_PEAK3] = 0x02c,
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[WMC_EQ5_HIGH_SHELF] = 0x02c,
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[WMC_DAC_LIMITER1] = 0x032,
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[WMC_DAC_LIMITER2] = 0x000,
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[WMC_NOTCH_FILTER1] = 0x000,
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[WMC_NOTCH_FILTER2] = 0x000,
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[WMC_NOTCH_FILTER3] = 0x000,
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[WMC_NOTCH_FILTER4] = 0x000,
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[WMC_ALC_CONTROL1] = 0x038,
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[WMC_ALC_CONTROL2] = 0x00b,
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[WMC_ALC_CONTROL3] = 0x032,
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[WMC_NOISE_GATE] = 0x000,
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[WMC_PLL_N] = 0x008,
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[WMC_PLL_K1] = 0x00c,
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[WMC_PLL_K2] = 0x093,
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[WMC_PLL_K3] = 0x0e9,
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[WMC_3D_CONTROL] = 0x000,
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[WMC_BEEP_CONTROL] = 0x000,
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[WMC_INPUT_CTRL] = 0x033,
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[WMC_LEFT_INP_PGA_GAIN_CTRL] = 0x010,
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[WMC_RIGHT_INP_PGA_GAIN_CTRL] = 0x010,
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[WMC_LEFT_ADC_BOOST_CTRL] = 0x100,
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[WMC_RIGHT_ADC_BOOST_CTRL] = 0x100,
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[WMC_OUTPUT_CTRL] = 0x002,
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[WMC_LEFT_MIXER_CTRL] = 0x001,
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[WMC_RIGHT_MIXER_CTRL] = 0x001,
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[WMC_LOUT1_HP_VOLUME_CTRL] = 0x039 | WMC_VU | WMC_ZC,
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[WMC_ROUT1_HP_VOLUME_CTRL] = 0x039 | WMC_VU | WMC_ZC,
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[WMC_LOUT2_SPK_VOLUME_CTRL] = 0x039 | WMC_VU | WMC_ZC,
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[WMC_ROUT2_SPK_VOLUME_CTRL] = 0x039 | WMC_VU | WMC_ZC,
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[WMC_OUT3_MIXER_CTRL] = 0x001,
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[WMC_OUT4_MONO_MIXER_CTRL] = 0x001,
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};
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struct
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{
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int vol_l;
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int vol_r;
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bool ahw_mute;
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} wmc_vol =
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{
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0, 0, false
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};
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static void wmc_write(unsigned int reg, unsigned int val)
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{
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if (reg >= WMC_NUM_REGISTERS || (wmc_regs[reg] & 0x8000))
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{
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logf("wm8978 invalid register: %d", reg);
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return;
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}
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wmc_regs[reg] = val & ~0x8000;
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wmcodec_write(reg, val);
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}
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static void wmc_set(unsigned int reg, unsigned int bits)
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{
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wmc_write(reg, wmc_regs[reg] | bits);
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}
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static void wmc_clear(unsigned int reg, unsigned int bits)
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{
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wmc_write(reg, wmc_regs[reg] & ~bits);
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}
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static void wmc_write_masked(unsigned int reg, unsigned int bits,
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unsigned int mask)
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{
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wmc_write(reg, (wmc_regs[reg] & ~mask) | (bits & mask));
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}
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/* convert tenth of dB volume (-890..60) to master volume register value
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* (000000...111111) */
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int tenthdb2master(int db)
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{
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/* -90dB to +6dB 1dB steps (96 levels) 7bits */
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/* 1100000 == +6dB (0x60,96) */
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/* 1101010 == 0dB (0x5a,90) */
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/* 1000001 == -57dB (0x21,33,DAC) */
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/* 0000001 == -89dB (0x01,01) */
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/* 0000000 == -90dB (0x00,00,Mute) */
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if (db <= VOLUME_MIN)
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{
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return 0x0;
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}
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else
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{
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return (db - VOLUME_MIN) / 10;
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}
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}
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void audiohw_preinit(void)
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{
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/* 1. Turn on external power supplies. Wait for supply voltage to settle. */
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/* Step 1 should be completed already. Reset and return all registers to
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* defaults */
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wmcodec_write(WMC_SOFTWARE_RESET, 0xff);
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sleep(HZ/10);
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/* 2. Mute all analogue outputs */
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wmc_set(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE);
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wmc_set(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE);
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wmc_set(WMC_LOUT2_SPK_VOLUME_CTRL, WMC_MUTE);
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wmc_set(WMC_ROUT2_SPK_VOLUME_CTRL, WMC_MUTE);
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wmc_set(WMC_OUT3_MIXER_CTRL, WMC_MUTE);
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wmc_set(WMC_OUT4_MONO_MIXER_CTRL, WMC_MUTE);
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wmc_set(WMC_INPUT_CTRL, 0x000);
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/* 3. Set L/RMIXEN = 1 and DACENL/R = 1 in register R3. */
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wmc_write(WMC_POWER_MANAGEMENT3,
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WMC_RMIXEN | WMC_LMIXEN | WMC_DACENR | WMC_DACENL);
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/* 4. Set BUFIOEN = 1 and VMIDSEL[1:0] to required value in register
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* R1. Wait for VMID supply to settle */
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wmc_write(WMC_POWER_MANAGEMENT1, WMC_BUFIOEN | WMC_VMIDSEL_300K);
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sleep(HZ/10);
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/* 5. Set BIASEN = 1 in register R1. */
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wmc_set(WMC_POWER_MANAGEMENT1, WMC_BIASEN);
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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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/* 6. Set L/ROUTEN = 1 in register R2. */
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wmc_write(WMC_POWER_MANAGEMENT2, WMC_LOUT1EN | WMC_ROUT1EN);
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/* 7. Enable other mixers as required */
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/* 8. Enable other outputs as required */
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/* 9. Set remaining registers */
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wmc_write(WMC_AUDIO_INTERFACE, WMC_WL_16 | WMC_FMT_I2S
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| WMC_DACLRSWAP | WMC_ADCLRSWAP);
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wmc_write(WMC_DAC_CONTROL, WMC_DACOSR_128 | WMC_AMUTE);
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/* Specific to HW clocking */
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wmc_write(WMC_CLOCK_GEN_CTRL, WMC_MCLKDIV_1_5 | WMC_BCLKDIV_8 | WMC_MS);
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wmc_write(WMC_ADDITIONAL_CTRL, WMC_SR_48KHZ); /* 44.1 */
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/* Initialize to minimum volume */
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wmc_write_masked(WMC_LEFT_DAC_DIGITAL_VOL, 189, WMC_DVOL);
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wmc_write_masked(WMC_LOUT1_HP_VOLUME_CTRL, 0, WMC_AVOL);
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wmc_write_masked(WMC_RIGHT_DAC_DIGITAL_VOL, 189, WMC_DVOL);
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wmc_write_masked(WMC_ROUT1_HP_VOLUME_CTRL, 0, WMC_AVOL);
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/* ADC silenced */
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wmc_write_masked(WMC_LEFT_ADC_DIGITAL_VOL, 0x00, WMC_DVOL);
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wmc_write_masked(WMC_RIGHT_ADC_DIGITAL_VOL, 0x00, WMC_DVOL);
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audiohw_enable_headphone_jack(true);
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}
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void audiohw_set_headphone_vol(int vol_l, int vol_r)
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{
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int prev_l = wmc_vol.vol_l;
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int prev_r = wmc_vol.vol_r;
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int dac_l, dac_r;
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wmc_vol.vol_l = vol_l;
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wmc_vol.vol_r = vol_r;
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/* When analogue volume falls below -57dB (0x00) start attenuating the
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* DAC volume */
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if (vol_l >= 33)
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{
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if (vol_l > HW_VOL_MAX)
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vol_l = HW_VOL_MAX;
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dac_l = 255;
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vol_l -= 33;
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}
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else
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{
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if (vol_l < HW_VOL_MIN)
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vol_l = HW_VOL_MIN;
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dac_l = 2*vol_l + 189;
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vol_l = 0;
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}
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if (vol_r >= 33)
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{
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if (vol_r > HW_VOL_MAX)
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vol_r = HW_VOL_MAX;
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dac_r = 255;
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vol_r -= 33;
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}
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else
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{
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if (vol_r < HW_VOL_MIN)
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vol_r = HW_VOL_MIN;
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dac_r = 2*vol_r + 189;
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vol_r = 0;
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}
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/* Have to write both channels always to have the latching work */
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wmc_write_masked(WMC_LEFT_DAC_DIGITAL_VOL, dac_l, WMC_DVOL);
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wmc_write_masked(WMC_LOUT1_HP_VOLUME_CTRL, vol_l, WMC_AVOL);
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wmc_write_masked(WMC_RIGHT_DAC_DIGITAL_VOL, dac_r, WMC_DVOL);
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wmc_write_masked(WMC_ROUT1_HP_VOLUME_CTRL, vol_r, WMC_AVOL);
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if (wmc_vol.vol_l > HW_VOL_MUTE)
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{
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/* Not muted and going up from mute level? */
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if (prev_l <= HW_VOL_MUTE && !wmc_vol.ahw_mute)
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wmc_clear(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE);
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}
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else
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{
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/* Going to mute level? */
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if (prev_l > HW_VOL_MUTE)
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wmc_set(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE);
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}
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if (wmc_vol.vol_r > HW_VOL_MUTE)
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{
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/* Not muted and going up from mute level? */
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if (prev_r <= HW_VOL_MIN && !wmc_vol.ahw_mute)
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wmc_clear(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE);
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}
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else
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{
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/* Going to mute level? */
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if (prev_r > HW_VOL_MUTE)
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wmc_set(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE);
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}
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}
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void audiohw_close(void)
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{
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/* 1. Mute all analogue outputs */
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audiohw_mute(true);
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audiohw_enable_headphone_jack(false);
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/* 2. Disable power management register 1. R1 = 00 */
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wmc_write(WMC_POWER_MANAGEMENT1, 0x000);
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/* 3. Disable power management register 2. R2 = 00 */
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wmc_write(WMC_POWER_MANAGEMENT2, 0x000);
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/* 4. Disable power management register 3. R3 = 00 */
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wmc_write(WMC_POWER_MANAGEMENT3, 0x000);
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/* 5. Remove external power supplies. */
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}
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void audiohw_mute(bool mute)
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{
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wmc_vol.ahw_mute = mute;
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/* No DAC mute here, please - take care of each enabled output. */
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if (mute)
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{
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wmc_set(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE);
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wmc_set(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE);
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}
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else
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{
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/* Unmute outputs not at mute level */
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if (wmc_vol.vol_l > HW_VOL_MUTE)
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wmc_clear(WMC_LOUT1_HP_VOLUME_CTRL, WMC_MUTE);
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if (wmc_vol.vol_r > HW_VOL_MUTE)
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wmc_clear(WMC_ROUT1_HP_VOLUME_CTRL, WMC_MUTE);
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}
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}
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#ifdef HAVE_RECORDING
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/* TODO */
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void audiohw_set_recvol(int left, int right, int type)
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{
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(void)left; (void)right; (void)type;
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}
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#endif
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