1 /***************************************************************************
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
10 * Driver for WM8751 audio codec
12 * Based on code from the ipodlinux project - http://ipodlinux.org/
13 * Adapted for Rockbox in December 2005
15 * Original file: linux/arch/armnommu/mach-ipod/audio.c
17 * Copyright (c) 2003-2005 Bernard Leach (leachbj@bouncycastle.org)
19 * This program is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU General Public License
21 * as published by the Free Software Foundation; either version 2
22 * of the License, or (at your option) any later version.
24 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
25 * KIND, either express or implied.
27 ****************************************************************************/
34 const struct sound_settings_info audiohw_settings
[] = {
35 [SOUND_VOLUME
] = {"dB", 0, 1, -74, 6, -25},
36 #ifdef USE_ADAPTIVE_BASS
37 [SOUND_BASS
] = {"", 0, 1, 0, 15, 0},
39 [SOUND_BASS
] = {"dB", 1, 15, -60, 90, 0},
41 [SOUND_TREBLE
] = {"dB", 1, 15, -60, 90, 0},
42 [SOUND_BALANCE
] = {"%", 0, 1,-100, 100, 0},
43 [SOUND_CHANNELS
] = {"", 0, 1, 0, 5, 0},
44 [SOUND_STEREO_WIDTH
] = {"%", 0, 5, 0, 250, 100},
47 /* Flags used in combination with settings */
49 /* use zero crossing to reduce clicks during volume changes */
50 #define LOUT1_BITS (LOUT1_LO1ZC)
51 /* latch left volume first then update left+right together */
52 #define ROUT1_BITS (ROUT1_RO1ZC | ROUT1_RO1VU)
53 #define LOUT2_BITS (LOUT2_LO2ZC)
54 #define ROUT2_BITS (ROUT2_RO2ZC | ROUT2_RO2VU)
55 /* We use linear bass control with 200 Hz cutoff */
56 #ifdef USE_ADAPTIVE_BASE
57 #define BASSCTRL_BITS (BASSCTRL_BC | BASSCTRL_BB)
59 #define BASSCTRL_BITS (BASSCTRL_BC)
61 /* We use linear treble control with 4 kHz cutoff */
62 #define TREBCTRL_BITS (TREBCTRL_TC)
64 static int prescaler
= 0;
66 /* convert tenth of dB volume (-730..60) to master volume register value */
67 int tenthdb2master(int db
)
69 /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
70 /* 1111111 == +6dB (0x7f) */
71 /* 1111001 == 0dB (0x79) */
72 /* 0110000 == -73dB (0x30) */
73 /* 0101111..0000000 == mute (<= 0x2f) */
77 return (db
/ 10) + 73 + 0x30;
80 static int tone_tenthdb2hw(int value
)
82 /* -6.0db..+0db..+9.0db step 1.5db - translate -60..+0..+90 step 15
85 value
= 10 - (value
+ 60) / 15;
88 value
= 0xf; /* 0db -> off */
94 #ifdef USE_ADAPTIVE_BASS
95 static int adaptivebass2hw(int value
)
97 /* 0 to 15 step 1 - step -1 0 = off is a 15 in the register */
104 #if defined(HAVE_WM8750)
105 static int recvol2hw(int value
)
107 /* convert tenth of dB of input volume (-172...300) to input register value */
108 /* +30dB to -17.25 0.75dB step 6 bits */
109 /* 111111 == +30dB (0x3f) */
110 /* 010111 == 0dB (0x17) */
111 /* 000000 == -17.25dB */
113 return (3*(value
/10 - 0x17))/4;
116 static void audiohw_mute(bool mute
)
118 /* Mute: Set DACMU = 1 to soft-mute the audio DACs. */
119 /* Unmute: Set DACMU = 0 to soft-un-mute the audio DACs. */
120 wmcodec_write(DACCTRL
, mute
? DACCTRL_DACMU
: 0);
123 /* Reset and power up the WM8751 */
124 void audiohw_preinit(void)
127 /* controls headphone ouput */
128 GPIOL_ENABLE
|= 0x10;
129 GPIOL_OUTPUT_EN
|= 0x10;
130 GPIOL_OUTPUT_VAL
|= 0x10; /* disable */
134 * 1. Switch on power supplies.
135 * By default the WM8751 is in Standby Mode, the DAC is
136 * digitally muted and the Audio Interface, Line outputs
137 * and Headphone outputs are all OFF (DACMU = 1 Power
138 * Management registers 1 and 2 are all zeros).
141 wmcodec_write(RESET
, RESET_RESET
); /*Reset*/
143 /* 2. Enable Vmid and VREF. */
144 wmcodec_write(PWRMGMT1
, PWRMGMT1_VREF
| PWRMGMT1_VMIDSEL_5K
);
147 wmcodec_write(AINTFCE
,AINTFCE_WL_16
|AINTFCE_FORMAT_I2S
);
149 /* BCLKINV=0(Dont invert BCLK) MS=1(Enable Master) LRSWAP=0 LRP=0 */
150 /* IWL=00(16 bit) FORMAT=10(I2S format) */
151 wmcodec_write(AINTFCE
, AINTFCE_MS
| AINTFCE_WL_16
|
154 /* Set default samplerate */
156 audiohw_set_frequency(HW_FREQ_DEFAULT
);
159 /* Enable DACs and audio output after a short delay */
160 void audiohw_postinit(void)
162 /* From app notes: allow Vref to stabilize to reduce clicks */
165 /* 3. Enable DACs as required. */
166 wmcodec_write(PWRMGMT2
, PWRMGMT2_DACL
| PWRMGMT2_DACR
);
168 /* 4. Enable line and / or headphone output buffers as required. */
169 #if defined(MROBE_100) || defined(MPIO_HD200)
170 wmcodec_write(PWRMGMT2
, PWRMGMT2_DACL
| PWRMGMT2_DACR
|
171 PWRMGMT2_LOUT1
| PWRMGMT2_ROUT1
);
173 wmcodec_write(PWRMGMT2
, PWRMGMT2_DACL
| PWRMGMT2_DACR
|
174 PWRMGMT2_LOUT1
| PWRMGMT2_ROUT1
| PWRMGMT2_LOUT2
|
178 /* Full -0dB on the DACS */
179 wmcodec_write(LEFTGAIN
, 0xff);
180 wmcodec_write(RIGHTGAIN
, RIGHTGAIN_RDVU
| 0xff);
182 wmcodec_write(ADDITIONAL1
, ADDITIONAL1_TSDEN
| ADDITIONAL1_TOEN
|
183 ADDITIONAL1_DMONOMIX_LLRR
| ADDITIONAL1_VSEL_DEFAULT
);
185 wmcodec_write(LEFTMIX1
, LEFTMIX1_LD2LO
| LEFTMIX1_LI2LO_DEFAULT
);
186 wmcodec_write(RIGHTMIX2
, RIGHTMIX2_RD2RO
| RIGHTMIX2_RI2RO_DEFAULT
);
188 #ifdef TOSHIBA_GIGABEAT_F
189 #ifdef HAVE_HARDWARE_BEEP
190 /* Single-ended mono input */
191 wmcodec_write(MONOMIX1
, 0);
193 /* Route mono input to both outputs at 0dB */
194 wmcodec_write(LEFTMIX2
, LEFTMIX2_MI2LO
| LEFTMIX2_MI2LOVOL(2));
195 wmcodec_write(RIGHTMIX1
, RIGHTMIX1_MI2RO
| RIGHTMIX1_MI2ROVOL(2));
200 /* Crude fix for high pitch noise at startup
201 * I should find out what realy causes this
203 wmcodec_write(LOUT1
, LOUT1_BITS
|0x7f);
204 wmcodec_write(ROUT1
, ROUT1_BITS
|0x7f);
205 wmcodec_write(LOUT1
, LOUT1_BITS
);
206 wmcodec_write(ROUT1
, ROUT1_BITS
);
209 /* lower power consumption */
210 wmcodec_write(PWRMGMT1
, PWRMGMT1_VREF
| PWRMGMT1_VMIDSEL_50K
);
215 /* enable headphone output */
216 GPIOL_OUTPUT_VAL
&= ~0x10;
217 GPIOL_OUTPUT_EN
|= 0x10;
221 void audiohw_set_master_vol(int vol_l
, int vol_r
)
223 /* +6 to -73dB 1dB steps (plus mute == 80levels) 7bits */
224 /* 1111111 == +6dB */
226 /* 0110000 == -73dB */
227 /* 0101111 == mute (0x2f) */
229 wmcodec_write(LOUT1
, LOUT1_BITS
| LOUT1_LOUT1VOL(vol_l
));
230 wmcodec_write(ROUT1
, ROUT1_BITS
| ROUT1_ROUT1VOL(vol_r
));
234 void audiohw_set_lineout_vol(int vol_l
, int vol_r
)
236 wmcodec_write(LOUT2
, LOUT2_BITS
| LOUT2_LOUT2VOL(vol_l
));
237 wmcodec_write(ROUT2
, ROUT2_BITS
| ROUT2_ROUT2VOL(vol_r
));
241 void audiohw_set_bass(int value
)
243 wmcodec_write(BASSCTRL
, BASSCTRL_BITS
|
245 #ifdef USE_ADAPTIVE_BASS
246 BASSCTRL_BASS(adaptivebass2hw(value
)));
248 BASSCTRL_BASS(tone_tenthdb2hw(value
)));
252 void audiohw_set_treble(int value
)
254 wmcodec_write(TREBCTRL
, TREBCTRL_BITS
|
255 TREBCTRL_TREB(tone_tenthdb2hw(value
)));
258 void audiohw_set_prescaler(int value
)
260 prescaler
= 3 * value
/ 15;
261 wmcodec_write(LEFTGAIN
, 0xff - (prescaler
& LEFTGAIN_LDACVOL
));
262 wmcodec_write(RIGHTGAIN
, RIGHTGAIN_RDVU
|
263 (0xff - (prescaler
& RIGHTGAIN_RDACVOL
)));
266 /* Nice shutdown of WM8751 codec */
267 void audiohw_close(void)
269 /* 1. Set DACMU = 1 to soft-mute the audio DACs. */
272 /* 2. Disable all output buffers. */
273 wmcodec_write(PWRMGMT2
, 0x0);
275 /* 3. Switch off the power supplies. */
276 wmcodec_write(PWRMGMT1
, 0x0);
279 void audiohw_set_frequency(int fsel
)
283 static const unsigned char srctrl_table
[HW_NUM_FREQ
] =
285 HW_HAVE_11_([HW_FREQ_11
] = CODEC_SRCTRL_11025HZ
,)
286 HW_HAVE_22_([HW_FREQ_22
] = CODEC_SRCTRL_22050HZ
,)
287 HW_HAVE_44_([HW_FREQ_44
] = CODEC_SRCTRL_44100HZ
,)
288 HW_HAVE_88_([HW_FREQ_88
] = CODEC_SRCTRL_88200HZ
,)
291 if ((unsigned)fsel
>= HW_NUM_FREQ
)
292 fsel
= HW_FREQ_DEFAULT
;
294 wmcodec_write(CLOCKING
, srctrl_table
[fsel
]);
298 #if defined(HAVE_WM8750)
299 void audiohw_set_recsrc(int source
, bool recording
)
305 * if recording == false we use analog bypass from input
306 * turn off ADC, PGA to save power
307 * turn on output buffer(s)
309 * if recording == true we route input signal to PGA
310 * and monitoring picks up signal after PGA in analog domain
311 * turn on ADC, PGA, DAC, output buffer(s)
316 case AUDIO_SRC_PLAYBACK
:
317 /* mute PGA, disable all audio paths but DAC and output stage*/
318 wmcodec_write(LINVOL
, LINVOL_LINMUTE
| LINVOL_LINVOL(23)); /* 0dB */
319 wmcodec_write(RINVOL
, RINVOL_RINMUTE
| RINVOL_RINVOL(23)); /* 0dB */
320 wmcodec_write(PWRMGMT1
, PWRMGMT1_VREF
| PWRMGMT1_VMIDSEL_50K
);
321 wmcodec_write(PWRMGMT2
, PWRMGMT2_DACL
| PWRMGMT2_DACR
|
322 PWRMGMT2_LOUT1
| PWRMGMT2_ROUT1
);
324 /* route DAC signal to output mixer */
325 wmcodec_write(LEFTMIX1
, LEFTMIX1_LD2LO
);
326 wmcodec_write(RIGHTMIX2
, RIGHTMIX2_RD2RO
);
332 case AUDIO_SRC_FMRADIO
:
335 /* Set input volume to PGA */
336 wmcodec_write(LINVOL
, LINVOL_LINVOL(23));
337 wmcodec_write(RINVOL
, RINVOL_RINVOL(23));
339 /* Turn on PGA and ADC */
340 wmcodec_write(PWRMGMT1
, PWRMGMT1_VREF
| PWRMGMT1_VMIDSEL_50K
|
341 PWRMGMT1_AINL
| PWRMGMT1_AINR
|
342 PWRMGMT1_ADCL
| PWRMGMT1_ADCR
);
344 /* Setup input source for PGA as INPUT1
347 wmcodec_write(ADCL
, ADCL_LINSEL_LINPUT1
| ADCL_LMICBOOST_DISABLED
);
348 wmcodec_write(ADCR
, ADCR_RINSEL_RINPUT1
| ADCR_RMICBOOST_DISABLED
);
350 /* setup output digital data
351 * default is LADC -> LDATA, RADC -> RDATA
352 * so we don't touch this
355 /* power up DAC and output stage */
356 wmcodec_write(PWRMGMT2
, PWRMGMT2_DACL
| PWRMGMT2_DACR
|
357 PWRMGMT2_LOUT1
| PWRMGMT2_ROUT1
);
360 wmcodec_write(LEFTMIX1
, LEFTMIX1_LMIXSEL_ADCLIN
|
362 wmcodec_write(RIGHTMIX2
, RIGHTMIX2_RMIXSEL_ADCRIN
|
368 /* turn off ADC, PGA */
369 wmcodec_write(PWRMGMT1
, PWRMGMT1_VREF
| PWRMGMT1_VMIDSEL_50K
);
371 /* turn on DAC and output stage */
372 wmcodec_write(PWRMGMT2
, PWRMGMT2_DACL
| PWRMGMT2_DACR
|
373 PWRMGMT2_LOUT1
| PWRMGMT2_ROUT1
);
375 /* setup monitor mode by routing input signal to outmix
378 wmcodec_write(LEFTMIX1
, LEFTMIX1_LI2LO
| LEFTMIX1_LMIXSEL_LINPUT1
|
379 LEFTMIX1_LI2LOVOL(0x20) | LEFTMIX1_LD2LO
);
380 wmcodec_write(RIGHTMIX2
, RIGHTMIX2_RI2RO
| RIGHTMIX2_RMIXSEL_RINPUT1
|
381 RIGHTMIX2_RI2ROVOL(0x20) | RIGHTMIX2_RD2RO
);
385 case AUDIO_SRC_LINEIN
:
386 /* Set input volume to PGA */
387 wmcodec_write(LINVOL
, LINVOL_LINVOL(23));
388 wmcodec_write(RINVOL
, RINVOL_RINVOL(23));
390 /* Turn on PGA, ADC, DAC */
391 wmcodec_write(PWRMGMT1
, PWRMGMT1_VREF
| PWRMGMT1_VMIDSEL_50K
|
392 PWRMGMT1_AINL
| PWRMGMT1_AINR
|
393 PWRMGMT1_ADCL
| PWRMGMT1_ADCR
);
395 /* turn on DAC and output stage */
396 wmcodec_write(PWRMGMT2
, PWRMGMT2_DACL
| PWRMGMT2_DACR
|
397 PWRMGMT2_LOUT1
| PWRMGMT2_ROUT1
);
399 /* Setup input source for PGA as INPUT2
402 wmcodec_write(ADCL
, ADCL_LINSEL_LINPUT2
| ADCL_LMICBOOST_DISABLED
);
403 wmcodec_write(ADCR
, ADCR_RINSEL_RINPUT2
| ADCR_RMICBOOST_DISABLED
);
405 /* setup output digital data
406 * default is LADC -> LDATA, RADC -> RDATA
407 * so we don't touch this
410 /* digital monitor */
411 wmcodec_write(LEFTMIX1
, LEFTMIX1_LMIXSEL_ADCLIN
|
413 wmcodec_write(RIGHTMIX2
, RIGHTMIX2_RMIXSEL_ADCRIN
|
418 /* Set input volume to PGA */
419 wmcodec_write(LINVOL
, LINVOL_LINVOL(23));
420 wmcodec_write(RINVOL
, RINVOL_RINVOL(23));
422 /* Turn on PGA and ADC, turn off DAC */
423 wmcodec_write(PWRMGMT1
, PWRMGMT1_VREF
| PWRMGMT1_VMIDSEL_50K
|
424 PWRMGMT1_AINL
| PWRMGMT1_AINR
|
425 PWRMGMT1_ADCL
| PWRMGMT1_ADCR
);
427 /* turn on DAC and output stage */
428 wmcodec_write(PWRMGMT2
, PWRMGMT2_DACL
| PWRMGMT2_DACR
|
429 PWRMGMT2_LOUT1
| PWRMGMT2_ROUT1
);
431 /* Setup input source for PGA as INPUT3
434 wmcodec_write(ADCL
, ADCL_LINSEL_LINPUT3
| ADCL_LMICBOOST_DISABLED
);
435 wmcodec_write(ADCR
, ADCR_RINSEL_RINPUT3
| ADCR_RMICBOOST_DISABLED
);
437 /* setup output digital data
438 * default is LADC -> LDATA, RADC -> RDATA
439 * so we don't touch this
443 wmcodec_write(LEFTMIX1
, LEFTMIX1_LMIXSEL_ADCLIN
|
445 wmcodec_write(RIGHTMIX2
, RIGHTMIX2_RMIXSEL_ADCRIN
|
449 } /* switch(source) */
453 void audiohw_set_recvol(int left
, int right
, int type
)
456 wmcodec_write(LINVOL
, LINVOL_LINVOL(recvol2hw(left
)));
457 wmcodec_write(RINVOL
, RINVOL_RINVOL(recvol2hw(right
)));