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TOMOYO Linux Cross Reference
Linux/sound/pci/ice1712/prodigy192.c

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  1 /*
  2  *   ALSA driver for ICEnsemble VT1724 (Envy24HT)
  3  *
  4  *   Lowlevel functions for AudioTrak Prodigy 192 cards
  5  *   Supported IEC958 input from optional MI/ODI/O add-on card.
  6  *
  7  *   Specifics (SW, HW):
  8  *   -------------------
  9  *      * 49.5MHz crystal
 10  *      * SPDIF-OUT on the card:
 11  *        - coax (through isolation transformer)/toslink supplied by
 12  *          74HC04 gates - 3 in parallel
 13  *        - output switched between on-board CD drive dig-out connector
 14  *          and ice1724 SPDTX pin, using 74HC02 NOR gates, controlled
 15  *          by GPIO20 (0 = CD dig-out, 1 = SPDTX)
 16  *      * SPDTX goes straight to MI/ODI/O card's SPDIF-OUT coax
 17  *
 18  *      * MI/ODI/O card: AK4114 based, used for iec958 input only
 19  *              - toslink input -> RX0
 20  *              - coax input -> RX1
 21  *              - 4wire protocol:
 22  *                      AK4114          ICE1724
 23  *                      ------------------------------
 24  *                      CDTO (pin 32) -- GPIO11 pin 86
 25  *                      CDTI (pin 33) -- GPIO10 pin 77
 26  *                      CCLK (pin 34) -- GPIO9 pin 76
 27  *                      CSN  (pin 35) -- GPIO8 pin 75
 28  *              - output data Mode 7 (24bit, I2S, slave)
 29  *              - both MCKO1 and MCKO2 of ak4114 are fed to FPGA, which
 30  *                outputs master clock to SPMCLKIN of ice1724.
 31  *                Experimentally I found out that only a combination of
 32  *                OCKS0=1, OCKS1=1 (128fs, 64fs output) and ice1724 -
 33  *                VT1724_MT_I2S_MCLK_128X=0 (256fs input) yields correct
 34  *                sampling rate. That means the the FPGA doubles the
 35  *                MCK01 rate.
 36  *
 37  *      Copyright (c) 2003 Takashi Iwai <tiwai@suse.de>
 38  *      Copyright (c) 2003 Dimitromanolakis Apostolos <apostol@cs.utoronto.ca>
 39  *      Copyright (c) 2004 Kouichi ONO <co2b@ceres.dti.ne.jp>
 40  *
 41  *   This program is free software; you can redistribute it and/or modify
 42  *   it under the terms of the GNU General Public License as published by
 43  *   the Free Software Foundation; either version 2 of the License, or
 44  *   (at your option) any later version.
 45  *
 46  *   This program is distributed in the hope that it will be useful,
 47  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 48  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 49  *   GNU General Public License for more details.
 50  *
 51  *   You should have received a copy of the GNU General Public License
 52  *   along with this program; if not, write to the Free Software
 53  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 54  *
 55  */      
 56 
 57 #include <linux/delay.h>
 58 #include <linux/interrupt.h>
 59 #include <linux/init.h>
 60 #include <linux/slab.h>
 61 #include <sound/core.h>
 62 
 63 #include "ice1712.h"
 64 #include "envy24ht.h"
 65 #include "prodigy192.h"
 66 #include "stac946x.h"
 67 #include <sound/tlv.h>
 68 
 69 struct prodigy192_spec {
 70         struct ak4114 *ak4114;
 71         /* rate change needs atomic mute/unmute of all dacs*/
 72         struct mutex mute_mutex;
 73 };
 74 
 75 static inline void stac9460_put(struct snd_ice1712 *ice, int reg, unsigned char val)
 76 {
 77         snd_vt1724_write_i2c(ice, PRODIGY192_STAC9460_ADDR, reg, val);
 78 }
 79 
 80 static inline unsigned char stac9460_get(struct snd_ice1712 *ice, int reg)
 81 {
 82         return snd_vt1724_read_i2c(ice, PRODIGY192_STAC9460_ADDR, reg);
 83 }
 84 
 85 /*
 86  * DAC mute control
 87  */
 88 
 89 /*
 90  * idx = STAC9460 volume register number, mute: 0 = mute, 1 = unmute
 91  */
 92 static int stac9460_dac_mute(struct snd_ice1712 *ice, int idx,
 93                 unsigned char mute)
 94 {
 95         unsigned char new, old;
 96         int change;
 97         old = stac9460_get(ice, idx);
 98         new = (~mute << 7 & 0x80) | (old & ~0x80);
 99         change = (new != old);
100         if (change)
101                 /* dev_dbg(ice->card->dev, "Volume register 0x%02x: 0x%02x\n", idx, new);*/
102                 stac9460_put(ice, idx, new);
103         return change;
104 }
105 
106 #define stac9460_dac_mute_info          snd_ctl_boolean_mono_info
107 
108 static int stac9460_dac_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
109 {
110         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
111         unsigned char val;
112         int idx;
113 
114         if (kcontrol->private_value)
115                 idx = STAC946X_MASTER_VOLUME;
116         else
117                 idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_VOLUME;
118         val = stac9460_get(ice, idx);
119         ucontrol->value.integer.value[0] = (~val >> 7) & 0x1;
120         return 0;
121 }
122 
123 static int stac9460_dac_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
124 {
125         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
126         struct prodigy192_spec *spec = ice->spec;
127         int idx, change;
128 
129         if (kcontrol->private_value)
130                 idx = STAC946X_MASTER_VOLUME;
131         else
132                 idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_VOLUME;
133         /* due to possible conflicts with stac9460_set_rate_val, mutexing */
134         mutex_lock(&spec->mute_mutex);
135         /*
136         dev_dbg(ice->card->dev, "Mute put: reg 0x%02x, ctrl value: 0x%02x\n", idx,
137                ucontrol->value.integer.value[0]);
138         */
139         change = stac9460_dac_mute(ice, idx, ucontrol->value.integer.value[0]);
140         mutex_unlock(&spec->mute_mutex);
141         return change;
142 }
143 
144 /*
145  * DAC volume attenuation mixer control
146  */
147 static int stac9460_dac_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
148 {
149         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
150         uinfo->count = 1;
151         uinfo->value.integer.min = 0;                   /* mute */
152         uinfo->value.integer.max = 0x7f;                /* 0dB */
153         return 0;
154 }
155 
156 static int stac9460_dac_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
157 {
158         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
159         int idx;
160         unsigned char vol;
161 
162         if (kcontrol->private_value)
163                 idx = STAC946X_MASTER_VOLUME;
164         else
165                 idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_VOLUME;
166         vol = stac9460_get(ice, idx) & 0x7f;
167         ucontrol->value.integer.value[0] = 0x7f - vol;
168 
169         return 0;
170 }
171 
172 static int stac9460_dac_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
173 {
174         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
175         int idx;
176         unsigned char tmp, ovol, nvol;
177         int change;
178 
179         if (kcontrol->private_value)
180                 idx = STAC946X_MASTER_VOLUME;
181         else
182                 idx  = snd_ctl_get_ioffidx(kcontrol, &ucontrol->id) + STAC946X_LF_VOLUME;
183         nvol = ucontrol->value.integer.value[0];
184         tmp = stac9460_get(ice, idx);
185         ovol = 0x7f - (tmp & 0x7f);
186         change = (ovol != nvol);
187         if (change) {
188                 ovol =  (0x7f - nvol) | (tmp & 0x80);
189                 /*
190                 dev_dbg(ice->card->dev, "DAC Volume: reg 0x%02x: 0x%02x\n",
191                        idx, ovol);
192                 */
193                 stac9460_put(ice, idx, (0x7f - nvol) | (tmp & 0x80));
194         }
195         return change;
196 }
197 
198 /*
199  * ADC mute control
200  */
201 #define stac9460_adc_mute_info          snd_ctl_boolean_stereo_info
202 
203 static int stac9460_adc_mute_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
204 {
205         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
206         unsigned char val;
207         int i;
208 
209         for (i = 0; i < 2; ++i) {
210                 val = stac9460_get(ice, STAC946X_MIC_L_VOLUME + i);
211                 ucontrol->value.integer.value[i] = ~val>>7 & 0x1;
212         }
213 
214         return 0;
215 }
216 
217 static int stac9460_adc_mute_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
218 {
219         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
220         unsigned char new, old;
221         int i, reg;
222         int change;
223 
224         for (i = 0; i < 2; ++i) {
225                 reg = STAC946X_MIC_L_VOLUME + i;
226                 old = stac9460_get(ice, reg);
227                 new = (~ucontrol->value.integer.value[i]<<7&0x80) | (old&~0x80);
228                 change = (new != old);
229                 if (change)
230                         stac9460_put(ice, reg, new);
231         }
232 
233         return change;
234 }
235 
236 /*
237  * ADC gain mixer control
238  */
239 static int stac9460_adc_vol_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
240 {
241         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
242         uinfo->count = 2;
243         uinfo->value.integer.min = 0;           /* 0dB */
244         uinfo->value.integer.max = 0x0f;        /* 22.5dB */
245         return 0;
246 }
247 
248 static int stac9460_adc_vol_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
249 {
250         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
251         int i, reg;
252         unsigned char vol;
253 
254         for (i = 0; i < 2; ++i) {
255                 reg = STAC946X_MIC_L_VOLUME + i;
256                 vol = stac9460_get(ice, reg) & 0x0f;
257                 ucontrol->value.integer.value[i] = 0x0f - vol;
258         }
259 
260         return 0;
261 }
262 
263 static int stac9460_adc_vol_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
264 {
265         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
266         int i, reg;
267         unsigned char ovol, nvol;
268         int change;
269 
270         for (i = 0; i < 2; ++i) {
271                 reg = STAC946X_MIC_L_VOLUME + i;
272                 nvol = ucontrol->value.integer.value[i] & 0x0f;
273                 ovol = 0x0f - stac9460_get(ice, reg);
274                 change = ((ovol & 0x0f)  != nvol);
275                 if (change)
276                         stac9460_put(ice, reg, (0x0f - nvol) | (ovol & ~0x0f));
277         }
278 
279         return change;
280 }
281 
282 static int stac9460_mic_sw_info(struct snd_kcontrol *kcontrol,
283                                 struct snd_ctl_elem_info *uinfo)
284 {
285         static const char * const texts[2] = { "Line In", "Mic" };
286 
287         return snd_ctl_enum_info(uinfo, 1, 2, texts);
288 }
289 
290 
291 static int stac9460_mic_sw_get(struct snd_kcontrol *kcontrol,
292                         struct snd_ctl_elem_value *ucontrol)
293 {
294         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
295         unsigned char val;
296                 
297         val = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
298         ucontrol->value.enumerated.item[0] = (val >> 7) & 0x1;
299         return 0;
300 }
301 
302 static int stac9460_mic_sw_put(struct snd_kcontrol *kcontrol,
303                         struct snd_ctl_elem_value *ucontrol)
304 {
305         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
306         unsigned char new, old;
307         int change;
308         old = stac9460_get(ice, STAC946X_GENERAL_PURPOSE);
309         new = (ucontrol->value.enumerated.item[0] << 7 & 0x80) | (old & ~0x80);
310         change = (new != old);
311         if (change)
312                 stac9460_put(ice, STAC946X_GENERAL_PURPOSE, new);
313         return change;
314 }
315 /*
316  * Handler for setting correct codec rate - called when rate change is detected
317  */
318 static void stac9460_set_rate_val(struct snd_ice1712 *ice, unsigned int rate)
319 {
320         unsigned char old, new;
321         int idx;
322         unsigned char changed[7];
323         struct prodigy192_spec *spec = ice->spec;
324 
325         if (rate == 0)  /* no hint - S/PDIF input is master, simply return */
326                 return;
327         else if (rate <= 48000)
328                 new = 0x08;     /* 256x, base rate mode */
329         else if (rate <= 96000)
330                 new = 0x11;     /* 256x, mid rate mode */
331         else
332                 new = 0x12;     /* 128x, high rate mode */
333         old = stac9460_get(ice, STAC946X_MASTER_CLOCKING);
334         if (old == new)
335                 return;
336         /* change detected, setting master clock, muting first */
337         /* due to possible conflicts with mute controls - mutexing */
338         mutex_lock(&spec->mute_mutex);
339         /* we have to remember current mute status for each DAC */
340         for (idx = 0; idx < 7 ; ++idx)
341                 changed[idx] = stac9460_dac_mute(ice,
342                                 STAC946X_MASTER_VOLUME + idx, 0);
343         /*dev_dbg(ice->card->dev, "Rate change: %d, new MC: 0x%02x\n", rate, new);*/
344         stac9460_put(ice, STAC946X_MASTER_CLOCKING, new);
345         udelay(10);
346         /* unmuting - only originally unmuted dacs -
347          * i.e. those changed when muting */
348         for (idx = 0; idx < 7 ; ++idx) {
349                 if (changed[idx])
350                         stac9460_dac_mute(ice, STAC946X_MASTER_VOLUME + idx, 1);
351         }
352         mutex_unlock(&spec->mute_mutex);
353 }
354 
355 
356 static const DECLARE_TLV_DB_SCALE(db_scale_dac, -19125, 75, 0);
357 static const DECLARE_TLV_DB_SCALE(db_scale_adc, 0, 150, 0);
358 
359 /*
360  * mixers
361  */
362 
363 static struct snd_kcontrol_new stac_controls[] = {
364         {
365                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
366                 .name = "Master Playback Switch",
367                 .info = stac9460_dac_mute_info,
368                 .get = stac9460_dac_mute_get,
369                 .put = stac9460_dac_mute_put,
370                 .private_value = 1,
371                 .tlv = { .p = db_scale_dac }
372         },
373         {
374                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
375                 .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
376                            SNDRV_CTL_ELEM_ACCESS_TLV_READ),
377                 .name = "Master Playback Volume",
378                 .info = stac9460_dac_vol_info,
379                 .get = stac9460_dac_vol_get,
380                 .put = stac9460_dac_vol_put,
381                 .private_value = 1,
382                 .tlv = { .p = db_scale_dac }
383         },
384         {
385                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
386                 .name = "DAC Switch",
387                 .count = 6,
388                 .info = stac9460_dac_mute_info,
389                 .get = stac9460_dac_mute_get,
390                 .put = stac9460_dac_mute_put,
391         },
392         {
393                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
394                 .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
395                            SNDRV_CTL_ELEM_ACCESS_TLV_READ),
396                 .name = "DAC Volume",
397                 .count = 6,
398                 .info = stac9460_dac_vol_info,
399                 .get = stac9460_dac_vol_get,
400                 .put = stac9460_dac_vol_put,
401                 .tlv = { .p = db_scale_dac }
402         },
403         {
404                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
405                 .name = "ADC Capture Switch",
406                 .count = 1,
407                 .info = stac9460_adc_mute_info,
408                 .get = stac9460_adc_mute_get,
409                 .put = stac9460_adc_mute_put,
410 
411         },
412         {
413                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
414                 .access = (SNDRV_CTL_ELEM_ACCESS_READWRITE |
415                            SNDRV_CTL_ELEM_ACCESS_TLV_READ),
416                 .name = "ADC Capture Volume",
417                 .count = 1,
418                 .info = stac9460_adc_vol_info,
419                 .get = stac9460_adc_vol_get,
420                 .put = stac9460_adc_vol_put,
421                 .tlv = { .p = db_scale_adc }
422         },
423         {
424                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
425                 .name = "Analog Capture Input",
426                 .info = stac9460_mic_sw_info,
427                 .get = stac9460_mic_sw_get,
428                 .put = stac9460_mic_sw_put,
429 
430         },
431 };
432 
433 /* AK4114 - ICE1724 connections on Prodigy192 + MI/ODI/O */
434 /* CDTO (pin 32) -- GPIO11 pin 86
435  * CDTI (pin 33) -- GPIO10 pin 77
436  * CCLK (pin 34) -- GPIO9 pin 76
437  * CSN  (pin 35) -- GPIO8 pin 75
438  */
439 #define AK4114_ADDR     0x00 /* C1-C0: Chip Address
440                               * (According to datasheet fixed to “00”)
441                               */
442 
443 /*
444  * 4wire ak4114 protocol - writing data
445  */
446 static void write_data(struct snd_ice1712 *ice, unsigned int gpio,
447                        unsigned int data, int idx)
448 {
449         for (; idx >= 0; idx--) {
450                 /* drop clock */
451                 gpio &= ~VT1724_PRODIGY192_CCLK;
452                 snd_ice1712_gpio_write(ice, gpio);
453                 udelay(1);
454                 /* set data */
455                 if (data & (1 << idx))
456                         gpio |= VT1724_PRODIGY192_CDOUT;
457                 else
458                         gpio &= ~VT1724_PRODIGY192_CDOUT;
459                 snd_ice1712_gpio_write(ice, gpio);
460                 udelay(1);
461                 /* raise clock */
462                 gpio |= VT1724_PRODIGY192_CCLK;
463                 snd_ice1712_gpio_write(ice, gpio);
464                 udelay(1);
465         }
466 }
467 
468 /*
469  * 4wire ak4114 protocol - reading data
470  */
471 static unsigned char read_data(struct snd_ice1712 *ice, unsigned int gpio,
472                                int idx)
473 {
474         unsigned char data = 0;
475 
476         for (; idx >= 0; idx--) {
477                 /* drop clock */
478                 gpio &= ~VT1724_PRODIGY192_CCLK;
479                 snd_ice1712_gpio_write(ice, gpio);
480                 udelay(1);
481                 /* read data */
482                 if (snd_ice1712_gpio_read(ice) & VT1724_PRODIGY192_CDIN)
483                         data |= (1 << idx);
484                 udelay(1);
485                 /* raise clock */
486                 gpio |= VT1724_PRODIGY192_CCLK;
487                 snd_ice1712_gpio_write(ice, gpio);
488                 udelay(1);
489         }
490         return data;
491 }
492 /*
493  * 4wire ak4114 protocol - starting sequence
494  */
495 static unsigned int prodigy192_4wire_start(struct snd_ice1712 *ice)
496 {
497         unsigned int tmp;
498 
499         snd_ice1712_save_gpio_status(ice);
500         tmp = snd_ice1712_gpio_read(ice);
501 
502         tmp |= VT1724_PRODIGY192_CCLK; /* high at init */
503         tmp &= ~VT1724_PRODIGY192_CS; /* drop chip select */
504         snd_ice1712_gpio_write(ice, tmp);
505         udelay(1);
506         return tmp;
507 }
508 
509 /*
510  * 4wire ak4114 protocol - final sequence
511  */
512 static void prodigy192_4wire_finish(struct snd_ice1712 *ice, unsigned int tmp)
513 {
514         tmp |= VT1724_PRODIGY192_CS; /* raise chip select */
515         snd_ice1712_gpio_write(ice, tmp);
516         udelay(1);
517         snd_ice1712_restore_gpio_status(ice);
518 }
519 
520 /*
521  * Write data to addr register of ak4114
522  */
523 static void prodigy192_ak4114_write(void *private_data, unsigned char addr,
524                                unsigned char data)
525 {
526         struct snd_ice1712 *ice = private_data;
527         unsigned int tmp, addrdata;
528         tmp = prodigy192_4wire_start(ice);
529         addrdata = (AK4114_ADDR << 6) | 0x20 | (addr & 0x1f);
530         addrdata = (addrdata << 8) | data;
531         write_data(ice, tmp, addrdata, 15);
532         prodigy192_4wire_finish(ice, tmp);
533 }
534 
535 /*
536  * Read data from addr register of ak4114
537  */
538 static unsigned char prodigy192_ak4114_read(void *private_data,
539                                             unsigned char addr)
540 {
541         struct snd_ice1712 *ice = private_data;
542         unsigned int tmp;
543         unsigned char data;
544 
545         tmp = prodigy192_4wire_start(ice);
546         write_data(ice, tmp, (AK4114_ADDR << 6) | (addr & 0x1f), 7);
547         data = read_data(ice, tmp, 7);
548         prodigy192_4wire_finish(ice, tmp);
549         return data;
550 }
551 
552 
553 static int ak4114_input_sw_info(struct snd_kcontrol *kcontrol,
554                                 struct snd_ctl_elem_info *uinfo)
555 {
556         static const char * const texts[2] = { "Toslink", "Coax" };
557 
558         return snd_ctl_enum_info(uinfo, 1, 2, texts);
559 }
560 
561 
562 static int ak4114_input_sw_get(struct snd_kcontrol *kcontrol,
563                         struct snd_ctl_elem_value *ucontrol)
564 {
565         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
566         unsigned char val;
567                 
568         val = prodigy192_ak4114_read(ice, AK4114_REG_IO1);
569         /* AK4114_IPS0 bit = 0 -> RX0 = Toslink
570          * AK4114_IPS0 bit = 1 -> RX1 = Coax
571          */
572         ucontrol->value.enumerated.item[0] = (val & AK4114_IPS0) ? 1 : 0;
573         return 0;
574 }
575 
576 static int ak4114_input_sw_put(struct snd_kcontrol *kcontrol,
577                         struct snd_ctl_elem_value *ucontrol)
578 {
579         struct snd_ice1712 *ice = snd_kcontrol_chip(kcontrol);
580         unsigned char new, old, itemvalue;
581         int change;
582 
583         old = prodigy192_ak4114_read(ice, AK4114_REG_IO1);
584         /* AK4114_IPS0 could be any bit */
585         itemvalue = (ucontrol->value.enumerated.item[0]) ? 0xff : 0x00;
586 
587         new = (itemvalue & AK4114_IPS0) | (old & ~AK4114_IPS0);
588         change = (new != old);
589         if (change)
590                 prodigy192_ak4114_write(ice, AK4114_REG_IO1, new);
591         return change;
592 }
593 
594 
595 static struct snd_kcontrol_new ak4114_controls[] = {
596         {
597                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
598                 .name = "MIODIO IEC958 Capture Input",
599                 .info = ak4114_input_sw_info,
600                 .get = ak4114_input_sw_get,
601                 .put = ak4114_input_sw_put,
602 
603         }
604 };
605 
606 
607 static int prodigy192_ak4114_init(struct snd_ice1712 *ice)
608 {
609         static const unsigned char ak4114_init_vals[] = {
610                 AK4114_RST | AK4114_PWN | AK4114_OCKS0 | AK4114_OCKS1,
611                 /* ice1724 expects I2S and provides clock,
612                  * DEM0 disables the deemphasis filter
613                  */
614                 AK4114_DIF_I24I2S | AK4114_DEM0 ,
615                 AK4114_TX1E,
616                 AK4114_EFH_1024 | AK4114_DIT, /* default input RX0 */
617                 0,
618                 0
619         };
620         static const unsigned char ak4114_init_txcsb[] = {
621                 0x41, 0x02, 0x2c, 0x00, 0x00
622         };
623         struct prodigy192_spec *spec = ice->spec;
624         int err;
625 
626         err = snd_ak4114_create(ice->card,
627                                  prodigy192_ak4114_read,
628                                  prodigy192_ak4114_write,
629                                  ak4114_init_vals, ak4114_init_txcsb,
630                                  ice, &spec->ak4114);
631         if (err < 0)
632                 return err;
633         /* AK4114 in Prodigy192 cannot detect external rate correctly.
634          * No reason to stop capture stream due to incorrect checks */
635         spec->ak4114->check_flags = AK4114_CHECK_NO_RATE;
636         return 0;
637 }
638 
639 static void stac9460_proc_regs_read(struct snd_info_entry *entry,
640                 struct snd_info_buffer *buffer)
641 {
642         struct snd_ice1712 *ice = entry->private_data;
643         int reg, val;
644         /* registers 0x0 - 0x14 */
645         for (reg = 0; reg <= 0x15; reg++) {
646                 val = stac9460_get(ice, reg);
647                 snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
648         }
649 }
650 
651 
652 static void stac9460_proc_init(struct snd_ice1712 *ice)
653 {
654         struct snd_info_entry *entry;
655         if (!snd_card_proc_new(ice->card, "stac9460_codec", &entry))
656                 snd_info_set_text_ops(entry, ice, stac9460_proc_regs_read);
657 }
658 
659 
660 static int prodigy192_add_controls(struct snd_ice1712 *ice)
661 {
662         struct prodigy192_spec *spec = ice->spec;
663         unsigned int i;
664         int err;
665 
666         for (i = 0; i < ARRAY_SIZE(stac_controls); i++) {
667                 err = snd_ctl_add(ice->card,
668                                   snd_ctl_new1(&stac_controls[i], ice));
669                 if (err < 0)
670                         return err;
671         }
672         if (spec->ak4114) {
673                 /* ak4114 is connected */
674                 for (i = 0; i < ARRAY_SIZE(ak4114_controls); i++) {
675                         err = snd_ctl_add(ice->card,
676                                           snd_ctl_new1(&ak4114_controls[i],
677                                                        ice));
678                         if (err < 0)
679                                 return err;
680                 }
681                 err = snd_ak4114_build(spec->ak4114,
682                                 NULL, /* ak4114 in MIO/DI/O handles no IEC958 output */
683                                 ice->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
684                 if (err < 0)
685                         return err;
686         }
687         stac9460_proc_init(ice);
688         return 0;
689 }
690 
691 /*
692  * check for presence of MI/ODI/O add-on card with digital inputs
693  */
694 static int prodigy192_miodio_exists(struct snd_ice1712 *ice)
695 {
696 
697         unsigned char orig_value;
698         const unsigned char test_data = 0xd1;   /* random value */
699         unsigned char addr = AK4114_REG_INT0_MASK; /* random SAFE address */
700         int exists = 0;
701 
702         orig_value = prodigy192_ak4114_read(ice, addr);
703         prodigy192_ak4114_write(ice, addr, test_data);
704         if (prodigy192_ak4114_read(ice, addr) == test_data) {
705                 /* ak4114 seems to communicate, apparently exists */
706                 /* writing back original value */
707                 prodigy192_ak4114_write(ice, addr, orig_value);
708                 exists = 1;
709         }
710         return exists;
711 }
712 
713 /*
714  * initialize the chip
715  */
716 static int prodigy192_init(struct snd_ice1712 *ice)
717 {
718         static const unsigned short stac_inits_prodigy[] = {
719                 STAC946X_RESET, 0,
720                 STAC946X_MASTER_CLOCKING, 0x11,
721 /*              STAC946X_MASTER_VOLUME, 0,
722                 STAC946X_LF_VOLUME, 0,
723                 STAC946X_RF_VOLUME, 0,
724                 STAC946X_LR_VOLUME, 0,
725                 STAC946X_RR_VOLUME, 0,
726                 STAC946X_CENTER_VOLUME, 0,
727                 STAC946X_LFE_VOLUME, 0,*/
728                 (unsigned short)-1
729         };
730         const unsigned short *p;
731         int err = 0;
732         struct prodigy192_spec *spec;
733 
734         /* prodigy 192 */
735         ice->num_total_dacs = 6;
736         ice->num_total_adcs = 2;
737         ice->vt1720 = 0;  /* ice1724, e.g. 23 GPIOs */
738         
739         spec = kzalloc(sizeof(*spec), GFP_KERNEL);
740         if (!spec)
741                 return -ENOMEM;
742         ice->spec = spec;
743         mutex_init(&spec->mute_mutex);
744 
745         /* initialize codec */
746         p = stac_inits_prodigy;
747         for (; *p != (unsigned short)-1; p += 2)
748                 stac9460_put(ice, p[0], p[1]);
749         ice->gpio.set_pro_rate = stac9460_set_rate_val;
750 
751         /* MI/ODI/O add on card with AK4114 */
752         if (prodigy192_miodio_exists(ice)) {
753                 err = prodigy192_ak4114_init(ice);
754                 /* from this moment if err = 0 then
755                  * spec->ak4114 should not be null
756                  */
757                 dev_dbg(ice->card->dev,
758                         "AK4114 initialized with status %d\n", err);
759         } else
760                 dev_dbg(ice->card->dev, "AK4114 not found\n");
761 
762         return err;
763 }
764 
765 
766 /*
767  * Aureon boards don't provide the EEPROM data except for the vendor IDs.
768  * hence the driver needs to sets up it properly.
769  */
770 
771 static unsigned char prodigy71_eeprom[] = {
772         [ICE_EEP2_SYSCONF]     = 0x6a,  /* 49MHz crystal, mpu401,
773                                          * spdif-in+ 1 stereo ADC,
774                                          * 3 stereo DACs
775                                          */
776         [ICE_EEP2_ACLINK]      = 0x80,  /* I2S */
777         [ICE_EEP2_I2S]         = 0xf8,  /* vol, 96k, 24bit, 192k */
778         [ICE_EEP2_SPDIF]       = 0xc3,  /* out-en, out-int, spdif-in */
779         [ICE_EEP2_GPIO_DIR]    = 0xff,
780         [ICE_EEP2_GPIO_DIR1]   = ~(VT1724_PRODIGY192_CDIN >> 8) ,
781         [ICE_EEP2_GPIO_DIR2]   = 0xbf,
782         [ICE_EEP2_GPIO_MASK]   = 0x00,
783         [ICE_EEP2_GPIO_MASK1]  = 0x00,
784         [ICE_EEP2_GPIO_MASK2]  = 0x00,
785         [ICE_EEP2_GPIO_STATE]  = 0x00,
786         [ICE_EEP2_GPIO_STATE1] = 0x00,
787         [ICE_EEP2_GPIO_STATE2] = 0x10,  /* GPIO20: 0 = CD drive dig. input
788                                          * passthrough,
789                                          * 1 = SPDIF-OUT from ice1724
790                                          */
791 };
792 
793 
794 /* entry point */
795 struct snd_ice1712_card_info snd_vt1724_prodigy192_cards[] = {
796         {
797                 .subvendor = VT1724_SUBDEVICE_PRODIGY192VE,
798                 .name = "Audiotrak Prodigy 192",
799                 .model = "prodigy192",
800                 .chip_init = prodigy192_init,
801                 .build_controls = prodigy192_add_controls,
802                 .eeprom_size = sizeof(prodigy71_eeprom),
803                 .eeprom_data = prodigy71_eeprom,
804         },
805         { } /* terminator */
806 };
807 

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