diff options
Diffstat (limited to 'firmware/drivers/audio/rk27xx_codec.c')
-rw-r--r-- | firmware/drivers/audio/rk27xx_codec.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/firmware/drivers/audio/rk27xx_codec.c b/firmware/drivers/audio/rk27xx_codec.c new file mode 100644 index 0000000000..ebc6c476a3 --- /dev/null +++ b/firmware/drivers/audio/rk27xx_codec.c | |||
@@ -0,0 +1,160 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Driver for internal Rockchip rk27xx audio codec | ||
11 | * (shCODlp-100.01-HD IP core from Dolphin) | ||
12 | * | ||
13 | * Copyright (c) 2011 Marcin Bukat | ||
14 | * | ||
15 | * This program is free software; you can redistribute it and/or | ||
16 | * modify it under the terms of the GNU General Public License | ||
17 | * as published by the Free Software Foundation; either version 2 | ||
18 | * of the License, or (at your option) any later version. | ||
19 | * | ||
20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
21 | * KIND, either express or implied. | ||
22 | * | ||
23 | ****************************************************************************/ | ||
24 | #include "kernel.h" | ||
25 | #include "audio.h" | ||
26 | #include "audiohw.h" | ||
27 | #include "system.h" | ||
28 | #include "i2c-rk27xx.h" | ||
29 | |||
30 | const struct sound_settings_info audiohw_settings[] = { | ||
31 | [SOUND_VOLUME] = {"dB", 1, 5,-335, 45,-255}, | ||
32 | /* HAVE_SW_TONE_CONTROLS */ | ||
33 | [SOUND_BASS] = {"dB", 0, 1, -24, 24, 0}, | ||
34 | [SOUND_TREBLE] = {"dB", 0, 1, -24, 24, 0}, | ||
35 | [SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0}, | ||
36 | [SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0}, | ||
37 | [SOUND_STEREO_WIDTH] = {"%", 0, 5, 0, 250, 100}, | ||
38 | #ifdef HAVE_RECORDING /* disabled for now */ | ||
39 | [SOUND_LEFT_GAIN] = {"dB", 2, 75, -1725, 3000, 0}, | ||
40 | [SOUND_RIGHT_GAIN] = {"dB", 2, 75, -1725, 3000, 0}, | ||
41 | [SOUND_MIC_GAIN] = {"dB", 0, 1, 0, 20, 20}, | ||
42 | #endif | ||
43 | }; | ||
44 | |||
45 | /* private functions to read/write codec registers */ | ||
46 | static int codec_write(uint8_t reg, uint8_t val) | ||
47 | { | ||
48 | return i2c_write(CODEC_I2C_ADDR, reg, 1, &val); | ||
49 | } | ||
50 | |||
51 | #if 0 | ||
52 | static int codec_read(uint8_t reg, uint8_t *val) | ||
53 | { | ||
54 | return i2c_read(CODEC_I2C_ADDR, reg, 1, val); | ||
55 | } | ||
56 | #endif | ||
57 | |||
58 | static void audiohw_mute(bool mute) | ||
59 | { | ||
60 | if (mute) | ||
61 | codec_write(CR1, SB_MICBIAS|DAC_MUTE|DACSEL); | ||
62 | else | ||
63 | codec_write(CR1, SB_MICBIAS|DACSEL); | ||
64 | } | ||
65 | |||
66 | /* public functions */ | ||
67 | int tenthdb2master(int tdb) | ||
68 | { | ||
69 | /* we lie here a bit and present 0.5dB gain steps | ||
70 | * but codec has 'variable' gain steps (0.5, 1.0, 2.0) | ||
71 | * depending on gain region. | ||
72 | */ | ||
73 | |||
74 | if (tdb < VOLUME_MIN) | ||
75 | return 31; | ||
76 | else if (tdb < -115) | ||
77 | return -(((tdb + 115)/20) - 20); /* 2.0 dB steps */ | ||
78 | else if (tdb < 5) | ||
79 | return -(((tdb + 5)/10) - 9); /* 1.0 dB steps */ | ||
80 | else | ||
81 | return -((tdb - 45)/5); /* 0.5 dB steps */ | ||
82 | } | ||
83 | |||
84 | void audiohw_preinit(void) | ||
85 | { | ||
86 | /* PD7 output low */ | ||
87 | GPIO_PDDR &= ~(1<<7); | ||
88 | GPIO_PDCON |= (1<<7); | ||
89 | |||
90 | codec_write(PMR2, SB_SLEEP|GIM|SB_MC); | ||
91 | codec_write(AICR, DAC_SERIAL|ADC_SERIAL|DAC_I2S|ADC_I2S); | ||
92 | codec_write(CR1, SB_MICBIAS|DAC_MUTE|DACSEL); | ||
93 | codec_write(CR2, ADC_HPF); | ||
94 | codec_write(CCR1, CRYSTAL_12M); | ||
95 | codec_write(CCR2, (FREQ44100 << 4)|FREQ44100); | ||
96 | codec_write(CRR, RATIO_8|KFAST_32|THRESHOLD_128); | ||
97 | codec_write(TR1, NOSC); | ||
98 | } | ||
99 | |||
100 | void audiohw_postinit(void) | ||
101 | { | ||
102 | codec_write(PMR1, SB_OUT|SB_MIX|SB_ADC|SB_IN1|SB_IN2|SB_MIC|SB_IND); | ||
103 | |||
104 | udelay(10000); | ||
105 | |||
106 | codec_write(PMR2, GIM | SB_MC); | ||
107 | |||
108 | udelay(10000); | ||
109 | |||
110 | codec_write(PMR1, SB_OUT|SB_ADC|SB_IN1|SB_IN2|SB_MIC|SB_IND); | ||
111 | |||
112 | udelay(10000); | ||
113 | |||
114 | codec_write(PMR1, SB_ADC|SB_IN1|SB_IN2|SB_MIC|SB_IND); | ||
115 | |||
116 | sleep(3*HZ); | ||
117 | GPIO_PDDR |= (1<<7); /* PD7 high */ | ||
118 | sleep(HZ/10); | ||
119 | |||
120 | audiohw_mute(false); | ||
121 | } | ||
122 | |||
123 | void audiohw_close(void) | ||
124 | { | ||
125 | /* stub */ | ||
126 | } | ||
127 | |||
128 | void audiohw_set_frequency(int fsel) | ||
129 | { | ||
130 | static const unsigned char values_freq[HW_NUM_FREQ] = | ||
131 | { | ||
132 | HW_HAVE_8_([HW_FREQ_8] = (FREQ8000<<4)|FREQ8000,) | ||
133 | HW_HAVE_11_([HW_FREQ_11] = (FREQ11025<<4)|FREQ11025,) | ||
134 | HW_HAVE_12_([HW_FREQ_12] = (FREQ12000<<4)|FREQ12000,) | ||
135 | HW_HAVE_16_([HW_FREQ_16] = (FREQ16000<<4)|FREQ16000,) | ||
136 | HW_HAVE_22_([HW_FREQ_22] = (FREQ22050<<4)|FREQ22050,) | ||
137 | HW_HAVE_24_([HW_FREQ_24] = (FREQ24000<<4)|FREQ24000,) | ||
138 | HW_HAVE_32_([HW_FREQ_32] = (FREQ32000<<4)|FREQ32000,) | ||
139 | HW_HAVE_44_([HW_FREQ_44] = (FREQ44100<<4)|FREQ44100,) | ||
140 | HW_HAVE_48_([HW_FREQ_48] = (FREQ48000<<4)|FREQ48000,) | ||
141 | HW_HAVE_96_([HW_FREQ_96] = (FREQ96000<<4)|FREQ96000,) | ||
142 | }; | ||
143 | |||
144 | if ((unsigned)fsel >= HW_NUM_FREQ) | ||
145 | fsel = HW_FREQ_DEFAULT; | ||
146 | |||
147 | /* we setup the same sampling freq for DAC and ADC */ | ||
148 | codec_write(CCR2, values_freq[fsel]); | ||
149 | } | ||
150 | |||
151 | void audiohw_set_master_vol(int vol_l, int vol_r) | ||
152 | { | ||
153 | uint8_t val; | ||
154 | |||
155 | val = (uint8_t)(vol_r & 0x1f); | ||
156 | codec_write(CGR9, val); | ||
157 | |||
158 | val = (uint8_t)(vol_l & 0x1f); | ||
159 | codec_write(CGR8, val); | ||
160 | } | ||