summaryrefslogtreecommitdiffstats
path: root/firmware/target/mips/ingenic_x1000/erosqnative/audiohw-erosqnative.c
blob: df97aba0c86959a16a56d90daf0193fcb108fb56 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (C) 2021 Aidan MacDonald, Dana Conrad
 *
 * 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 "system.h"
#include "audiohw.h"
#include "pcm_sw_volume.h"
#include "pcm_sampr.h"
#include "i2c-target.h"
#include "button.h"

// #define LOGF_ENABLE
#include "logf.h"

#include "aic-x1000.h"
#include "i2c-x1000.h"
#include "gpio-x1000.h"

/*
 * Earlier devices audio path appears to be:
 * DAC \--> HP Amp --> Stereo Switch --> HP OUT
 *      \-> LO OUT
 *
 * Recent devices, the audio path seems to have changed to:
 * DAC --> HP Amp --> Stereo Switch \--> HP OUT
 *                                   \-> LO OUT
 */

void audiohw_init(void)
{
    /* explicitly mute everything */
    gpio_set_level(GPIO_HPAMP_SHDN, 0);
    gpio_set_level(GPIO_STEREOSW_MUTE, 1);
    gpio_set_level(GPIO_DAC_PWR, 0);

    aic_set_play_last_sample(true);
    aic_set_external_codec(true);
    aic_set_i2s_mode(AIC_I2S_MASTER_MODE);
    audiohw_set_frequency(HW_FREQ_48);

    aic_enable_i2s_master_clock(true);
    aic_enable_i2s_bit_clock(true);

    mdelay(10);

    /* power on DAC and HP Amp */
    gpio_set_level(GPIO_DAC_ANALOG_PWR, 1);
    gpio_set_level(GPIO_HPAMP_POWER, 1);
}

void audiohw_postinit(void)
{
    /*
     * enable playback, fill FIFO buffer with -1 to prevent
     * the DAC from auto-muting, wait, and then stop playback.
     * This seems to completely prevent power-on or first-track
     * clicking.
     */
    jz_writef(AIC_CCR, ERPL(1));
    for (int i = 0; i < 32; i++)
    {
        jz_write(AIC_DR, 0xFFFFFF);
    }
    /* Wait until all samples are through the FIFO. */
    while(jz_readf(AIC_SR, TFL) != 0);
    mdelay(20); /* This seems to silence the power-on click */
    jz_writef(AIC_CCR, ERPL(0));

    /* unmute - attempt to make power-on pop-free */
    gpio_set_level(GPIO_STEREOSW_SEL, 0);
    gpio_set_level(GPIO_HPAMP_SHDN, 1);
    mdelay(10);
    gpio_set_level(GPIO_DAC_PWR, 1);
    mdelay(10);
    gpio_set_level(GPIO_STEREOSW_MUTE, 0);

    i2c_x1000_set_freq(ES9018K2M_BUS, I2C_FREQ_400K);

    int ret = es9018k2m_read_reg(ES9018K2M_REG0_SYSTEM_SETTINGS);
    if (ret >= 0) /* Detected ES9018K2M DAC */
    {
        logf("ES9018K2M found: ret=%d", ret);
        es9018k2m_present_flag = 1;

       /* Default is 32-bit data, and it works ok. Enabling the following
        * causes issue. Which is weird, I definitely thought AIC was configured
        * for 24-bit data... */
        // es9018k2m_write_reg(ES9018K2M_REG1_INPUT_CONFIG, 0b01001100); // 24-bit data

    } else { /* Default to SWVOL for PCM5102A DAC */
        logf("Default to SWVOL: ret=%d", ret);
    }
}

void audiohw_close(void)
{
    /* mute - attempt to make power-off pop-free */
    gpio_set_level(GPIO_STEREOSW_MUTE, 1);
    mdelay(10);
    gpio_set_level(GPIO_DAC_PWR, 0);
    mdelay(10);
    gpio_set_level(GPIO_HPAMP_SHDN, 0);
}

void audiohw_set_frequency(int fsel)
{
    int sampr = hw_freq_sampr[fsel];
    int mult = 256;

    aic_enable_i2s_bit_clock(false);
    aic_set_i2s_clock(X1000_CLK_SCLK_A, sampr, mult);
    aic_enable_i2s_bit_clock(true);
}

void audiohw_set_volume(int vol_l, int vol_r)
{
    int l, r;

    eros_qn_set_last_vol(vol_l, vol_r);

    l = vol_l;
    r = vol_r;

#if (defined(HAVE_HEADPHONE_DETECTION) && defined(HAVE_LINEOUT_DETECTION))
    /* make sure headphones aren't present - don't want to
     * blow out our eardrums cranking it to full */
    if (lineout_inserted() && !headphones_inserted())
    {
        eros_qn_switch_output(1);

        l = r = eros_qn_get_volume_limit();
    }
    else
    {
        eros_qn_switch_output(0);
    }
#endif

    if (es9018k2m_present_flag) /* ES9018K2M */
    {
        /* Same volume range and mute point for both DACs, so use PCM5102A_VOLUME_MIN */
        l = l <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : l;
        r = r <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : r;

        /* set software volume just below unity due to
         * DAC offset. We don't want to overflow the PCM system. */
        pcm_set_master_volume(-1, -1);
        es9018k2m_set_volume_async(l, r);
    }
    else /* PCM5102A */
    {
        l = l <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : (l / 20);
        r = r <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : (r / 20);

        pcm_set_master_volume(l, r);
    }
}

void audiohw_set_filter_roll_off(int value)
{
    if (es9018k2m_present_flag)
    {
        es9018k2m_set_filter_roll_off(value);
    }
}