e85bc74b30
The GPIO API was pretty clunky and pin settings were decentralized, making it hard to see what was happening and making GPIO stuff look like a mess, frankly. Instead of passing clunky (port, pin) pairs everywhere, GPIOs are now identified with a single int. The extra overhead should be minimal as GPIO configuration is generally not on a performance-critical path. Pin assignments are now mostly consolidated in gpio-target.h and put in various tables so gpio_init() can assign most pins at boot time. Most drivers no longer need to touch GPIOs and basic pin I/O stuff can happen without config since pins are put into the right state. IRQ pins still need to be configured manually before use. Change-Id: Ic5326284b0b2a2f613e9e76a41cb50e24af3aa47
91 lines
2.3 KiB
C
91 lines
2.3 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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* $Id$
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*
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* Copyright (C) 2021 Aidan MacDonald
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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 "audiohw.h"
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#include "system.h"
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#include "pcm_sampr.h"
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#include "aic-x1000.h"
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#include "i2c-x1000.h"
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#include "gpio-x1000.h"
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#include "logf.h"
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static int cur_fsel = HW_FREQ_48;
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static int cur_power_mode = 0;
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static void set_ak_freqmode(void)
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{
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int freq = hw_freq_sampr[cur_fsel];
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int mult = freq >= SAMPR_176 ? 128 : 256;
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aic_enable_i2s_bit_clock(false);
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aic_set_i2s_clock(X1000_CLK_SCLK_A, freq, mult);
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ak4376_set_freqmode(cur_fsel, mult, cur_power_mode);
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aic_enable_i2s_bit_clock(true);
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}
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void audiohw_init(void)
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{
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/* Configure AIC */
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aic_set_external_codec(true);
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aic_set_i2s_mode(AIC_I2S_MASTER_MODE);
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aic_enable_i2s_master_clock(true);
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/* Initialize DAC */
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i2c_x1000_set_freq(AK4376_BUS, I2C_FREQ_400K);
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ak4376_open();
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set_ak_freqmode();
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}
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void audiohw_postinit(void)
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{
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}
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void audiohw_close(void)
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{
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ak4376_close();
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}
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void audiohw_set_volume(int vol_l, int vol_r)
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{
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ak4376_set_volume(vol_l, vol_r);
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}
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void audiohw_set_filter_roll_off(int val)
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{
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ak4376_set_filter_roll_off(val);
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}
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void audiohw_set_frequency(int fsel)
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{
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cur_fsel = fsel;
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set_ak_freqmode();
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}
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void audiohw_set_power_mode(int mode)
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{
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cur_power_mode = mode;
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set_ak_freqmode();
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}
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void ak4376_set_pdn_pin(int level)
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{
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gpio_set_level(GPIO_AK4376_POWER, level ? 1 : 0);
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}
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