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Diffstat (limited to 'firmware/drivers/audio/wm8731l.c')
-rw-r--r-- | firmware/drivers/audio/wm8731l.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/firmware/drivers/audio/wm8731l.c b/firmware/drivers/audio/wm8731l.c new file mode 100644 index 0000000000..62b1b6a81e --- /dev/null +++ b/firmware/drivers/audio/wm8731l.c | |||
@@ -0,0 +1,305 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Driver for WM8731L 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 "lcd.h" | ||
27 | #include "cpu.h" | ||
28 | #include "kernel.h" | ||
29 | #include "thread.h" | ||
30 | #include "power.h" | ||
31 | #include "debug.h" | ||
32 | #include "system.h" | ||
33 | #include "sprintf.h" | ||
34 | #include "button.h" | ||
35 | #include "string.h" | ||
36 | #include "file.h" | ||
37 | #include "buffer.h" | ||
38 | #include "audio.h" | ||
39 | |||
40 | #include "wmcodec.h" | ||
41 | #include "wm8731l.h" | ||
42 | #include "i2s.h" | ||
43 | |||
44 | #define IPOD_PCM_LEVEL 0x65 /* -6dB */ | ||
45 | |||
46 | /* use zero crossing to reduce clicks during volume changes */ | ||
47 | #define VOLUME_ZC_WAIT (1<<7) | ||
48 | |||
49 | /* convert tenth of dB volume (-730..60) to master volume register value */ | ||
50 | int tenthdb2master(int db) | ||
51 | { | ||
52 | /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */ | ||
53 | /* 1111111 == +6dB (0x7f) */ | ||
54 | /* 1111001 == 0dB (0x79) */ | ||
55 | /* 0110000 == -73dB (0x30 */ | ||
56 | /* 0101111 == mute (0x2f) */ | ||
57 | |||
58 | if (db < VOLUME_MIN) { | ||
59 | return 0x2f; | ||
60 | } else { | ||
61 | return((db/10)+0x30+73); | ||
62 | } | ||
63 | } | ||
64 | |||
65 | /* convert tenth of dB volume (-780..0) to mixer volume register value */ | ||
66 | int tenthdb2mixer(int db) | ||
67 | { | ||
68 | if (db < -660) /* 1.5 dB steps */ | ||
69 | return (2640 - db) / 15; | ||
70 | else if (db < -600) /* 0.75 dB steps */ | ||
71 | return (990 - db) * 2 / 15; | ||
72 | else if (db < -460) /* 0.5 dB steps */ | ||
73 | return (460 - db) / 5; | ||
74 | else /* 0.25 dB steps */ | ||
75 | return -db * 2 / 5; | ||
76 | } | ||
77 | |||
78 | int audiohw_mute(int mute) | ||
79 | { | ||
80 | if (mute) | ||
81 | { | ||
82 | /* Set DACMU = 1 to soft-mute the audio DACs. */ | ||
83 | wmcodec_write(DACCTRL, 0x8); | ||
84 | } else { | ||
85 | /* Set DACMU = 0 to soft-un-mute the audio DACs. */ | ||
86 | wmcodec_write(DACCTRL, 0x0); | ||
87 | } | ||
88 | |||
89 | return 0; | ||
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 | #ifdef HAVE_WM8721 | ||
117 | /* DACSEL=1 */ | ||
118 | wmcodec_write(0x4, 0x10); | ||
119 | #elif defined HAVE_WM8731 | ||
120 | /* DACSEL=1, BYPASS=1 */ | ||
121 | wmcodec_write(0x4, 0x18); | ||
122 | #endif | ||
123 | |||
124 | /* set power register to POWEROFF=0 on OUTPD=0, DACPD=0 */ | ||
125 | wmcodec_write(PWRMGMT, 0x67); | ||
126 | |||
127 | /* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */ | ||
128 | /* IWL=00(16 bit) FORMAT=10(I2S format) */ | ||
129 | wmcodec_write(AINTFCE, 0x42); | ||
130 | |||
131 | audiohw_set_sample_rate(WM8731L_44100HZ); | ||
132 | |||
133 | /* set the volume to -6dB */ | ||
134 | wmcodec_write(LOUTVOL, IPOD_PCM_LEVEL); | ||
135 | wmcodec_write(ROUTVOL, 0x100 | IPOD_PCM_LEVEL); | ||
136 | |||
137 | /* ACTIVE=1 */ | ||
138 | codec_set_active(1); | ||
139 | |||
140 | /* 5. Set DACMU = 0 to soft-un-mute the audio DACs. */ | ||
141 | wmcodec_write(DACCTRL, 0x0); | ||
142 | |||
143 | #if defined(IRIVER_H10) || defined(IRIVER_H10_5GB) | ||
144 | /* We need to enable bit 4 of GPIOL for output for sound on H10 */ | ||
145 | GPIOL_OUTPUT_VAL |= 0x10; | ||
146 | #endif | ||
147 | audiohw_mute(0); | ||
148 | } else { | ||
149 | #if defined(IRIVER_H10) || defined(IRIVER_H10_5GB) | ||
150 | /* We need to disable bit 4 of GPIOL to disable sound on H10 */ | ||
151 | GPIOL_OUTPUT_VAL &= ~0x10; | ||
152 | #endif | ||
153 | audiohw_mute(1); | ||
154 | } | ||
155 | } | ||
156 | |||
157 | int audiohw_set_master_vol(int vol_l, int vol_r) | ||
158 | { | ||
159 | /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */ | ||
160 | /* 1111111 == +6dB */ | ||
161 | /* 1111001 == 0dB */ | ||
162 | /* 0110000 == -73dB */ | ||
163 | /* 0101111 == mute (0x2f) */ | ||
164 | |||
165 | wmcodec_write(LOUTVOL, VOLUME_ZC_WAIT | vol_l); | ||
166 | wmcodec_write(ROUTVOL, VOLUME_ZC_WAIT | vol_r); | ||
167 | |||
168 | return 0; | ||
169 | } | ||
170 | |||
171 | int audiohw_set_mixer_vol(int channel1, int channel2) | ||
172 | { | ||
173 | (void)channel1; | ||
174 | (void)channel2; | ||
175 | |||
176 | return 0; | ||
177 | } | ||
178 | |||
179 | void audiohw_set_bass(int value) | ||
180 | { | ||
181 | (void)value; | ||
182 | } | ||
183 | |||
184 | void audiohw_set_treble(int value) | ||
185 | { | ||
186 | (void)value; | ||
187 | } | ||
188 | |||
189 | /* Nice shutdown of WM8731 codec */ | ||
190 | void audiohw_close(void) | ||
191 | { | ||
192 | /* set DACMU=1 DEEMPH=0 */ | ||
193 | wmcodec_write(DACCTRL, 0x8); | ||
194 | |||
195 | /* ACTIVE=0 */ | ||
196 | codec_set_active(0x0); | ||
197 | |||
198 | /* line in mute left & right*/ | ||
199 | wmcodec_write(LINVOL, 0x100 | 0x80); | ||
200 | |||
201 | /* set DACSEL=0, MUTEMIC=1 */ | ||
202 | wmcodec_write(0x4, 0x2); | ||
203 | |||
204 | /* set POWEROFF=0 OUTPD=0 DACPD=1 */ | ||
205 | wmcodec_write(PWRMGMT, 0x6f); | ||
206 | |||
207 | /* set POWEROFF=1 OUTPD=1 DACPD=1 */ | ||
208 | wmcodec_write(PWRMGMT, 0xff); | ||
209 | } | ||
210 | |||
211 | /* Change the order of the noise shaper, 5th order is recommended above 32kHz */ | ||
212 | void audiohw_set_nsorder(int order) | ||
213 | { | ||
214 | (void)order; | ||
215 | } | ||
216 | |||
217 | void audiohw_set_sample_rate(int sampling_control) | ||
218 | { | ||
219 | codec_set_active(0x0); | ||
220 | wmcodec_write(SAMPCTRL, sampling_control); | ||
221 | codec_set_active(0x1); | ||
222 | } | ||
223 | |||
224 | void audiohw_enable_recording(bool source_mic) | ||
225 | { | ||
226 | static int line_level = 0x17; | ||
227 | static int mic_boost = true; | ||
228 | codec_set_active(0x0); | ||
229 | |||
230 | /* set BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 | ||
231 | * LRP=0 IWL=00(16 bit) FORMAT=10(I2S format) */ | ||
232 | wmcodec_write(AINTFCE, 0x42); | ||
233 | |||
234 | wmcodec_write(LOUTVOL, 0x0); /* headphone mute left */ | ||
235 | wmcodec_write(ROUTVOL, 0x0); /* headphone mute right */ | ||
236 | |||
237 | |||
238 | if(source_mic){ | ||
239 | wmcodec_write(LINVOL, 0x80); /* line in mute left */ | ||
240 | wmcodec_write(RINVOL, 0x80); /* line in mute right */ | ||
241 | |||
242 | |||
243 | if (mic_boost) { | ||
244 | wmcodec_write(AAPCTRL, 0x5); /* INSEL=mic, MIC_BOOST=enable */ | ||
245 | } else { | ||
246 | wmcodec_write(AAPCTRL, 0x4); /* INSEL=mic */ | ||
247 | } | ||
248 | } else { | ||
249 | if (line_level == 0) { | ||
250 | wmcodec_write(LINVOL, 0x80); | ||
251 | wmcodec_write(RINVOL, 0x80); | ||
252 | } else { | ||
253 | wmcodec_write(LINVOL, line_level); | ||
254 | wmcodec_write(RINVOL, line_level); | ||
255 | } | ||
256 | wmcodec_write(AAPCTRL, 0xa); /* BY PASS, mute mic, INSEL=line in */ | ||
257 | } | ||
258 | |||
259 | /* disable ADC high pass filter, mute dac */ | ||
260 | wmcodec_write(DACCTRL, 0x9); | ||
261 | |||
262 | /* power on (PWR_OFF=0) */ | ||
263 | if(source_mic){ | ||
264 | /* CLKOUTPD OSCPD OUTPD DACPD LINEINPD */ | ||
265 | wmcodec_write(PWRMGMT, 0x79); | ||
266 | } else { | ||
267 | wmcodec_write(PWRMGMT, 0x7a); /* MICPD */ | ||
268 | } | ||
269 | |||
270 | codec_set_active(0x1); | ||
271 | } | ||
272 | |||
273 | void audiohw_disable_recording(void) | ||
274 | { | ||
275 | /* set DACMU=1 DEEMPH=0 */ | ||
276 | wmcodec_write(DACCTRL, 0x8); | ||
277 | |||
278 | /* ACTIVE=0 */ | ||
279 | codec_set_active(0x0); | ||
280 | |||
281 | /* line in mute left & right*/ | ||
282 | wmcodec_write(LINVOL, 0x80); | ||
283 | wmcodec_write(RINVOL, 0x80); | ||
284 | |||
285 | /* set DACSEL=0, MUTEMIC=1 */ | ||
286 | wmcodec_write(AAPCTRL, 0x2); | ||
287 | |||
288 | /* set POWEROFF=0 OUTPD=0 DACPD=1 */ | ||
289 | wmcodec_write(PWRMGMT, 0x6f); | ||
290 | |||
291 | /* set POWEROFF=1 OUTPD=1 DACPD=1 */ | ||
292 | wmcodec_write(PWRMGMT, 0xff); | ||
293 | } | ||
294 | |||
295 | void audiohw_set_recvol(int left, int right, int type) | ||
296 | { | ||
297 | (void)left; | ||
298 | (void)right; | ||
299 | (void)type; | ||
300 | } | ||
301 | |||
302 | void audiohw_set_monitor(int enable) | ||
303 | { | ||
304 | (void)enable; | ||
305 | } | ||