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author | Michael Sevakis <jethead71@rockbox.org> | 2007-10-02 07:48:50 +0000 |
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committer | Michael Sevakis <jethead71@rockbox.org> | 2007-10-02 07:48:50 +0000 |
commit | 15b7321fe1345a9efd296fe135f19e1da45f0e7c (patch) | |
tree | e2b704e2e0dd20d8d6d46e6fedc159fafc7fdca4 /firmware/drivers/audio/wm8721.c | |
parent | 4d34457cd0a1958ff271bb2d87bfdba1432b678e (diff) | |
download | rockbox-15b7321fe1345a9efd296fe135f19e1da45f0e7c.tar.gz rockbox-15b7321fe1345a9efd296fe135f19e1da45f0e7c.zip |
Split wm8731 and wm8721 drivers. wm8721 can be much simpler since it has no recording. Provide reg bit definitions for those. Add some temporary hacks pcm-pp to prevent crashing when playing after recording. Make playback start after recording on pp5020. Get wm8731 to monitor recording but plans are to do that digitally.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14948 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/drivers/audio/wm8721.c')
-rw-r--r-- | firmware/drivers/audio/wm8721.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/firmware/drivers/audio/wm8721.c b/firmware/drivers/audio/wm8721.c new file mode 100644 index 0000000000..9b58454ca8 --- /dev/null +++ b/firmware/drivers/audio/wm8721.c | |||
@@ -0,0 +1,190 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Driver for WM8721 audio codec | ||
11 | * | ||
12 | * Based on code from the ipodlinux project - http://ipodlinux.org/ | ||
13 | * Adapted for Rockbox in January 2006 | ||
14 | * | ||
15 | * Original file: linux/arch/armnommu/mach-ipod/audio.c | ||
16 | * | ||
17 | * Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org) | ||
18 | * | ||
19 | * All files in this archive are subject to the GNU General Public License. | ||
20 | * See the file COPYING in the source tree root for full license agreement. | ||
21 | * | ||
22 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
23 | * KIND, either express or implied. | ||
24 | * | ||
25 | ****************************************************************************/ | ||
26 | #include "config.h" | ||
27 | #include "logf.h" | ||
28 | #include "system.h" | ||
29 | #include "string.h" | ||
30 | #include "audio.h" | ||
31 | |||
32 | #include "wmcodec.h" | ||
33 | #include "audiohw.h" | ||
34 | #include "i2s.h" | ||
35 | |||
36 | #define IPOD_PCM_LEVEL 0x65 /* -6dB */ | ||
37 | |||
38 | /* use zero crossing to reduce clicks during volume changes */ | ||
39 | #define VOLUME_ZC_WAIT (1<<7) | ||
40 | |||
41 | const struct sound_settings_info audiohw_settings[] = { | ||
42 | [SOUND_VOLUME] = {"dB", 0, 1, -74, 6, -25}, | ||
43 | /* HAVE_SW_TONE_CONTROLS */ | ||
44 | [SOUND_BASS] = {"dB", 0, 1, -24, 24, 0}, | ||
45 | [SOUND_TREBLE] = {"dB", 0, 1, -24, 24, 0}, | ||
46 | [SOUND_BALANCE] = {"%", 0, 1,-100, 100, 0}, | ||
47 | [SOUND_CHANNELS] = {"", 0, 1, 0, 5, 0}, | ||
48 | [SOUND_STEREO_WIDTH] = {"%", 0, 1, 0, 255, 100}, | ||
49 | }; | ||
50 | |||
51 | /* convert tenth of dB volume (-730..60) to master volume register value */ | ||
52 | int tenthdb2master(int db) | ||
53 | { | ||
54 | /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */ | ||
55 | /* 1111111 == +6dB (0x7f) */ | ||
56 | /* 1111001 == 0dB (0x79) */ | ||
57 | /* 0110000 == -73dB (0x30 */ | ||
58 | /* 0101111 == mute (0x2f) */ | ||
59 | |||
60 | if (db < VOLUME_MIN) { | ||
61 | return 0x2f; | ||
62 | } else { | ||
63 | return((db/10)+0x30+73); | ||
64 | } | ||
65 | } | ||
66 | |||
67 | /* convert tenth of dB volume (-780..0) to mixer volume register value */ | ||
68 | int tenthdb2mixer(int db) | ||
69 | { | ||
70 | if (db < -660) /* 1.5 dB steps */ | ||
71 | return (2640 - db) / 15; | ||
72 | else if (db < -600) /* 0.75 dB steps */ | ||
73 | return (990 - db) * 2 / 15; | ||
74 | else if (db < -460) /* 0.5 dB steps */ | ||
75 | return (460 - db) / 5; | ||
76 | else /* 0.25 dB steps */ | ||
77 | return -db * 2 / 5; | ||
78 | } | ||
79 | |||
80 | void audiohw_mute(bool mute) | ||
81 | { | ||
82 | if (mute) | ||
83 | { | ||
84 | /* Set DACMU = 1 to soft-mute the audio DACs. */ | ||
85 | wmcodec_write(DACCTRL, 0x8); | ||
86 | } else { | ||
87 | /* Set DACMU = 0 to soft-un-mute the audio DACs. */ | ||
88 | wmcodec_write(DACCTRL, 0x0); | ||
89 | } | ||
90 | } | ||
91 | |||
92 | /** From ipodLinux **/ | ||
93 | static void codec_set_active(int active) | ||
94 | { | ||
95 | /* set active to 0x0 or 0x1 */ | ||
96 | if (active) { | ||
97 | wmcodec_write(ACTIVECTRL, 0x01); | ||
98 | } else { | ||
99 | wmcodec_write(ACTIVECTRL, 0x00); | ||
100 | } | ||
101 | } | ||
102 | |||
103 | |||
104 | /* Silently enable / disable audio output */ | ||
105 | void audiohw_enable_output(bool enable) | ||
106 | { | ||
107 | if (enable) | ||
108 | { | ||
109 | /* reset the I2S controller into known state */ | ||
110 | i2s_reset(); | ||
111 | |||
112 | wmcodec_write(RESET, 0x0); /*Reset*/ | ||
113 | |||
114 | codec_set_active(0x0); | ||
115 | |||
116 | /* DACSEL=1 */ | ||
117 | wmcodec_write(0x4, 0x10); | ||
118 | |||
119 | /* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */ | ||
120 | wmcodec_write(PWRMGMT, 0x67); | ||
121 | |||
122 | /* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */ | ||
123 | /* IWL=00(16 bit) FORMAT=10(I2S format) */ | ||
124 | wmcodec_write(AINTFCE, 0x42); | ||
125 | |||
126 | audiohw_set_sample_rate(WM8721_USB24_44100HZ); | ||
127 | |||
128 | /* set the volume to -6dB */ | ||
129 | wmcodec_write(LOUTVOL, IPOD_PCM_LEVEL); | ||
130 | wmcodec_write(ROUTVOL, 0x100 | IPOD_PCM_LEVEL); | ||
131 | |||
132 | /* ACTIVE=1 */ | ||
133 | codec_set_active(1); | ||
134 | |||
135 | /* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */ | ||
136 | wmcodec_write(DACCTRL, 0x0); | ||
137 | |||
138 | audiohw_mute(0); | ||
139 | } else { | ||
140 | audiohw_mute(1); | ||
141 | } | ||
142 | } | ||
143 | |||
144 | int audiohw_set_master_vol(int vol_l, int vol_r) | ||
145 | { | ||
146 | /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */ | ||
147 | /* 1111111 == +6dB */ | ||
148 | /* 1111001 == 0dB */ | ||
149 | /* 0110000 == -73dB */ | ||
150 | /* 0101111 == mute (0x2f) */ | ||
151 | wmcodec_write(LOUTVOL, VOLUME_ZC_WAIT | vol_l); | ||
152 | wmcodec_write(ROUTVOL, VOLUME_ZC_WAIT | vol_r); | ||
153 | |||
154 | return 0; | ||
155 | } | ||
156 | |||
157 | /* Nice shutdown of WM8721 codec */ | ||
158 | void audiohw_close(void) | ||
159 | { | ||
160 | /* set DACMU=1 DEEMPH=0 */ | ||
161 | wmcodec_write(DACCTRL, 0x8); | ||
162 | |||
163 | /* ACTIVE=0 */ | ||
164 | codec_set_active(0x0); | ||
165 | |||
166 | /* line in mute left & right*/ | ||
167 | wmcodec_write(LINVOL, 0x100 | 0x80); | ||
168 | |||
169 | /* set DACSEL=0, MUTEMIC=1 */ | ||
170 | wmcodec_write(0x4, 0x2); | ||
171 | |||
172 | /* set POWEROFF=0 OUTPD=0 DACPD=1 */ | ||
173 | wmcodec_write(PWRMGMT, 0x6f); | ||
174 | |||
175 | /* set POWEROFF=1 OUTPD=1 DACPD=1 */ | ||
176 | wmcodec_write(PWRMGMT, 0xff); | ||
177 | } | ||
178 | |||
179 | /* Change the order of the noise shaper, 5th order is recommended above 32kHz */ | ||
180 | void audiohw_set_nsorder(int order) | ||
181 | { | ||
182 | (void)order; | ||
183 | } | ||
184 | |||
185 | void audiohw_set_sample_rate(int sampling_control) | ||
186 | { | ||
187 | codec_set_active(0x0); | ||
188 | wmcodec_write(SAMPCTRL, sampling_control); | ||
189 | codec_set_active(0x1); | ||
190 | } | ||