From e8a8a1be43afe63079ae48ce1a9eb3052df3b1a4 Mon Sep 17 00:00:00 2001 From: Tomasz Moń Date: Wed, 16 Nov 2011 14:08:01 +0000 Subject: Sandisk Sansa Connect port (FS #12363) Included are drivers for buttons, backlight, lcd, audio and storage. git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31000 a1c6a512-1295-4272-9138-f99709370657 --- firmware/drivers/audio/aic3x.c | 247 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 247 insertions(+) create mode 100644 firmware/drivers/audio/aic3x.c (limited to 'firmware/drivers') diff --git a/firmware/drivers/audio/aic3x.c b/firmware/drivers/audio/aic3x.c new file mode 100644 index 0000000000..3284326565 --- /dev/null +++ b/firmware/drivers/audio/aic3x.c @@ -0,0 +1,247 @@ +/*************************************************************************** + * __________ __ ___. + * Open \______ \ ____ ____ | | _\_ |__ _______ ___ + * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / + * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < + * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ + * \/ \/ \/ \/ \/ + * $Id: $ + * + * Copyright (C) 2011 by Tomasz Moń + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ****************************************************************************/ +#include "config.h" +#include "logf.h" +#include "system.h" +#include "string.h" +#include "audio.h" + +#ifdef SANSA_CONNECT +#include "avr-sansaconnect.h" +#endif + +#if CONFIG_I2C == I2C_DM320 +#include "i2c-dm320.h" +#endif +#include "audiohw.h" + +/* (7-bit) address is 0x18, the LSB is read/write flag */ +#define AIC3X_ADDR (0x18 << 1) + +static char volume_left = 0, volume_right = 0; + +const struct sound_settings_info audiohw_settings[] = { + [SOUND_VOLUME] = {"dB", 0, 1, VOLUME_MIN/10, VOLUME_MAX/10, -25}, + /* HAVE_SW_TONE_CONTROLS */ + [SOUND_BASS] = {"dB", 0, 1, -24, 24, 0}, + [SOUND_TREBLE] = {"dB", 0, 1, -24, 24, 0}, + [SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0}, + [SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0}, + [SOUND_STEREO_WIDTH] = {"%", 0, 5, 0, 250, 100}, +}; + +/* convert tenth of dB volume to master volume register value */ +int tenthdb2master(int db) +{ + /* 0 to -63.0dB in 1dB steps, aic3x can goto -63.5 in 0.5dB steps */ + if (db < VOLUME_MIN) + { + return 0x7E; + } + else if (db >= VOLUME_MAX) + { + return 0x00; + } + else + { + return (-((db)/5)); /* VOLUME_MIN is negative */ + } +} + +static void aic3x_write_reg(unsigned reg, unsigned value) +{ + unsigned char data[2]; + + data[0] = reg; + data[1] = value; + +#if CONFIG_I2C == I2C_DM320 + if (i2c_write(AIC3X_ADDR, data, 2) != 0) +#else + #warning Implement aic3x_write_reg() +#endif + { + logf("AIC3X error reg=0x%x", reg); + return; + } +} + +static void aic3x_apply_volume(void) +{ + unsigned char data[3]; + +#if 0 /* handle page switching onve we use first page at all */ + aic3x_write_reg(0, 0); /* switch to page 0 */ +#endif + + data[0] = AIC3X_LEFT_VOL; + data[1] = volume_left; + data[2] = volume_right; + + /* use autoincrement write */ +#if CONFIG_I2C == I2C_DM320 + if (i2c_write(AIC3X_ADDR, data, 3) != 0) +#else + #warning Implement aic3x_apply_volume() +#endif + { + logf("AIC3X error in apply volume"); + return; + } +} + + +static void audiohw_mute(bool mute) +{ + if (mute) + { + volume_left |= 0x80; + volume_right |= 0x80; + } + else + { + volume_left &= 0x7F; + volume_right &= 0x7F; + } + + aic3x_apply_volume(); +} + +/* public functions */ + +/** + * Init our tlv with default values + */ +void audiohw_init(void) +{ + logf("AIC3X init"); + + /* Do software reset (self-clearing) */ + aic3x_write_reg(AIC3X_SOFT_RESET, 0x80); + + /* ADC fs = fs(ref)/5.5; DAC fs = fs(ref) */ + aic3x_write_reg(AIC3X_SMPL_RATE, 0x90); + + /* Enable PLL. Set Q=16, P=1 */ + aic3x_write_reg(AIC3X_PLL_REG_A, 0x81); + /* PLL J = 53 */ + aic3x_write_reg(AIC3X_PLL_REG_B, 0xD4); + /* PLL D = 5211 */ + aic3x_write_reg(AIC3X_PLL_REG_C, 0x51); + aic3x_write_reg(AIC3X_PLL_REG_D, 0x6C); /* PLL D = 5211 */ + + /* Left DAC plays left channel, Right DAC plays right channel */ + aic3x_write_reg(AIC3X_DATAPATH, 0xA); + + /* Audio data interface */ + /* BCLK and WCLK are outputs (master mode) */ + aic3x_write_reg(AIC3X_DATA_REG_A, 0xC0); + /* right-justified mode */ + aic3x_write_reg(AIC3X_DATA_REG_B, 0x80); + /* data offset = 0 clocks */ + aic3x_write_reg(AIC3X_DATA_REG_C, 0); + + /* GPIO1 used for audio serial data bus ADC word clock */ + aic3x_write_reg(AIC3X_GPIO1_CTRL, 0x10); + + /* power left and right DAC, HPLCOM constant VCM output */ + aic3x_write_reg(AIC3X_DAC_POWER, 0xD0); + /* HPRCOM as constant VCM output. Enable short-circuit protection + (limit current) */ + aic3x_write_reg(AIC3X_HIGH_POWER, 0xC); + + /* driver power-on time 200 ms, ramp-up step time 4 ms */ + aic3x_write_reg(AIC3X_POP_REDUCT, 0x7C); + + /* DAC_L1 routed to HPLOUT, volume analog gain 0xC (-6.0dB) */ + aic3x_write_reg(AIC3X_DAC_L1_VOL, 0x8C); + /* HPLOUT output level 0dB, not muted, fully powered up */ + aic3x_write_reg(AIC3X_HPLOUT_LVL, 0xB); + + /* HPLCOM is muted */ + aic3x_write_reg(AIC3X_HPLCOM_LVL, 0x7); + + /* DAC_R1 routed to HPROUT, volume analog gain 0xC (-6.0 dB) */ + aic3x_write_reg(AIC3X_DAC_R1_VOL, 0x8C); + /* HPROUT output level 0dB, not muted, fully powered up */ + aic3x_write_reg(AIC3X_HPROUT_LVL, 0xB); + + /* DAC_L1 routed to MONO_LOP/M, gain 0x2 (-1.0dB) */ + aic3x_write_reg(AIC3X_DAC_L1_MONO_LOP_M_VOL, 0x92); + /* DAC_R1 routed to MONO_LOP/M, gain 0x2 (-1.0dB) */ + aic3x_write_reg(AIC3X_DAC_R1_MONO_LOP_M_VOL, 0x92); + + /* MONO_LOP output level 6dB, not muted, fully powered up */ + aic3x_write_reg(AIC3X_MONO_LOP_M_LVL, 0x6b); + + /* DAC_L1 routed to LEFT_LOP/M */ + aic3x_write_reg(AIC3X_DAC_L1_LEFT_LOP_M_VOL, 0x80); + /* LEFT_LOP/M output level 0dB, not muted */ + aic3x_write_reg(AIC3X_LEFT_LOP_M_LVL, 0xB); + + /* DAC_R1 routed to RIGHT_LOP/M */ + aic3x_write_reg(AIC3X_DAC_R1_RIGHT_LOP_M_VOL, 0x80); + /* RIGHT_LOP/M output level 0dB, not muted */ + aic3x_write_reg(AIC3X_RIGHT_LOP_M_LVL, 0xB); +} + +void audiohw_postinit(void) +{ + audiohw_mute(false); + + /* Power up Left, Right DAC/LOP, HPLOUT and HPROUT */ + aic3x_write_reg(AIC3X_MOD_POWER, 0xFE); +} + +void audiohw_set_frequency(int fsel) +{ + (void)fsel; + /* TODO */ +} + +void audiohw_set_headphone_vol(int vol_l, int vol_r) +{ + if ((volume_left & 0x7F) == (vol_l & 0x7F) && + (volume_right & 0x7F) == (vol_r & 0x7F)) + { + /* Volume already set to this value */ + return; + } + + volume_left &= 0x80; /* preserve mute bit */ + volume_left |= (vol_l & 0x7F); /* set gain */ + + volume_right &= 0x80; /* preserve mute bit */ + volume_right |= (vol_r & 0x7F); /* set gain */ + + aic3x_apply_volume(); +} + +/* Nice shutdown of AIC3X codec */ +void audiohw_close(void) +{ + audiohw_mute(true); +#ifdef SANSA_CONNECT + avr_hid_reset_codec(); +#endif +} + + -- cgit v1.2.3