diff options
Diffstat (limited to 'firmware/target/mips/ingenic_x1000/fiiom3k/audiohw-fiiom3k.c')
-rw-r--r-- | firmware/target/mips/ingenic_x1000/fiiom3k/audiohw-fiiom3k.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/firmware/target/mips/ingenic_x1000/fiiom3k/audiohw-fiiom3k.c b/firmware/target/mips/ingenic_x1000/fiiom3k/audiohw-fiiom3k.c new file mode 100644 index 0000000000..2f43809523 --- /dev/null +++ b/firmware/target/mips/ingenic_x1000/fiiom3k/audiohw-fiiom3k.c | |||
@@ -0,0 +1,81 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2021 Aidan MacDonald | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | #include "audiohw.h" | ||
23 | #include "system.h" | ||
24 | #include "pcm_sampr.h" | ||
25 | #include "logf.h" | ||
26 | #include "aic-x1000.h" | ||
27 | #include "i2c-x1000.h" | ||
28 | #include "gpio-x1000.h" | ||
29 | #include "x1000/aic.h" | ||
30 | #include "x1000/cpm.h" | ||
31 | |||
32 | void audiohw_init(void) | ||
33 | { | ||
34 | /* Configure AIC for I2S operation */ | ||
35 | jz_writef(CPM_CLKGR, AIC(0)); | ||
36 | gpio_config(GPIO_B, 0x1f, GPIO_DEVICE(1)); | ||
37 | jz_writef(AIC_I2SCR, STPBK(1)); | ||
38 | |||
39 | /* Operate as I2S master, use external codec */ | ||
40 | jz_writef(AIC_CFG, AUSEL(1), ICDC(0), BCKD(1), SYNCD(1), LSMP(1)); | ||
41 | jz_writef(AIC_I2SCR, ESCLK(1), AMSL(0)); | ||
42 | |||
43 | /* Stereo audio, packed 16 bit samples */ | ||
44 | jz_writef(AIC_CCR, PACK16(1), CHANNEL(1), OSS(1)); | ||
45 | |||
46 | /* Initialize DAC */ | ||
47 | i2c_x1000_set_freq(AK4376_BUS, I2C_FREQ_400K); | ||
48 | ak4376_init(); | ||
49 | } | ||
50 | |||
51 | void audiohw_postinit(void) | ||
52 | { | ||
53 | } | ||
54 | |||
55 | void audiohw_close(void) | ||
56 | { | ||
57 | ak4376_close(); | ||
58 | } | ||
59 | |||
60 | void ak4376_set_pdn_pin(int level) | ||
61 | { | ||
62 | gpio_config(GPIO_A, 1 << 16, GPIO_OUTPUT(level ? 1 : 0)); | ||
63 | } | ||
64 | |||
65 | int ak4376_set_mclk_freq(int hw_freq, bool enabled) | ||
66 | { | ||
67 | /* Get the multiplier */ | ||
68 | int freq = hw_freq_sampr[hw_freq]; | ||
69 | int mult = freq >= SAMPR_176 ? 128 : 256; | ||
70 | |||
71 | if(enabled) { | ||
72 | /* Set the new frequency; clock is enabled afterward */ | ||
73 | if(aic_i2s_set_mclk(X1000_CLK_SCLK_A, freq, mult)) | ||
74 | logf("WARNING: unachievable audio rate %d x %d!?", freq, mult); | ||
75 | } else { | ||
76 | /* Shut off the clock */ | ||
77 | jz_writef(AIC_I2SCR, STPBK(1)); | ||
78 | } | ||
79 | |||
80 | return mult; | ||
81 | } | ||