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TOMOYO Linux Cross Reference
Linux/sound/pci/ac97/ac97_codec.c

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  1 /*
  2  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  3  *  Universal interface for Audio Codec '97
  4  *
  5  *  For more details look to AC '97 component specification revision 2.2
  6  *  by Intel Corporation (http://developer.intel.com).
  7  *
  8  *
  9  *   This program is free software; you can redistribute it and/or modify
 10  *   it under the terms of the GNU General Public License as published by
 11  *   the Free Software Foundation; either version 2 of the License, or
 12  *   (at your option) any later version.
 13  *
 14  *   This program is distributed in the hope that it will be useful,
 15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 17  *   GNU General Public License for more details.
 18  *
 19  *   You should have received a copy of the GNU General Public License
 20  *   along with this program; if not, write to the Free Software
 21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 22  *
 23  */
 24 
 25 #include <linux/delay.h>
 26 #include <linux/init.h>
 27 #include <linux/slab.h>
 28 #include <linux/pci.h>
 29 #include <linux/module.h>
 30 #include <linux/mutex.h>
 31 #include <sound/core.h>
 32 #include <sound/pcm.h>
 33 #include <sound/tlv.h>
 34 #include <sound/ac97_codec.h>
 35 #include <sound/asoundef.h>
 36 #include <sound/initval.h>
 37 #include "ac97_id.h"
 38 
 39 #include "ac97_patch.c"
 40 
 41 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
 42 MODULE_DESCRIPTION("Universal interface for Audio Codec '97");
 43 MODULE_LICENSE("GPL");
 44 
 45 static bool enable_loopback;
 46 
 47 module_param(enable_loopback, bool, 0444);
 48 MODULE_PARM_DESC(enable_loopback, "Enable AC97 ADC/DAC Loopback Control");
 49 
 50 #ifdef CONFIG_SND_AC97_POWER_SAVE
 51 static int power_save = CONFIG_SND_AC97_POWER_SAVE_DEFAULT;
 52 module_param(power_save, int, 0644);
 53 MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
 54                  "(in second, 0 = disable).");
 55 #endif
 56 /*
 57 
 58  */
 59 
 60 struct ac97_codec_id {
 61         unsigned int id;
 62         unsigned int mask;
 63         const char *name;
 64         int (*patch)(struct snd_ac97 *ac97);
 65         int (*mpatch)(struct snd_ac97 *ac97);
 66         unsigned int flags;
 67 };
 68 
 69 static const struct ac97_codec_id snd_ac97_codec_id_vendors[] = {
 70 { 0x41445300, 0xffffff00, "Analog Devices",     NULL,   NULL },
 71 { 0x414b4d00, 0xffffff00, "Asahi Kasei",        NULL,   NULL },
 72 { 0x414c4300, 0xffffff00, "Realtek",            NULL,   NULL },
 73 { 0x414c4700, 0xffffff00, "Realtek",            NULL,   NULL },
 74 /*
 75  * This is an _inofficial_ Aztech Labs entry
 76  * (value might differ from unknown official Aztech ID),
 77  * currently used by the AC97 emulation of the almost-AC97 PCI168 card.
 78  */
 79 { 0x415a5400, 0xffffff00, "Aztech Labs (emulated)",     NULL,   NULL },
 80 { 0x434d4900, 0xffffff00, "C-Media Electronics", NULL,  NULL },
 81 { 0x43525900, 0xffffff00, "Cirrus Logic",       NULL,   NULL },
 82 { 0x43585400, 0xffffff00, "Conexant",           NULL,   NULL },
 83 { 0x44543000, 0xffffff00, "Diamond Technology", NULL,   NULL },
 84 { 0x454d4300, 0xffffff00, "eMicro",             NULL,   NULL },
 85 { 0x45838300, 0xffffff00, "ESS Technology",     NULL,   NULL },
 86 { 0x48525300, 0xffffff00, "Intersil",           NULL,   NULL },
 87 { 0x49434500, 0xffffff00, "ICEnsemble",         NULL,   NULL },
 88 { 0x49544500, 0xffffff00, "ITE Tech.Inc",       NULL,   NULL },
 89 { 0x4e534300, 0xffffff00, "National Semiconductor", NULL, NULL },
 90 { 0x50534300, 0xffffff00, "Philips",            NULL,   NULL },
 91 { 0x53494c00, 0xffffff00, "Silicon Laboratory", NULL,   NULL },
 92 { 0x53544d00, 0xffffff00, "STMicroelectronics", NULL,   NULL },
 93 { 0x54524100, 0xffffff00, "TriTech",            NULL,   NULL },
 94 { 0x54584e00, 0xffffff00, "Texas Instruments",  NULL,   NULL },
 95 { 0x56494100, 0xffffff00, "VIA Technologies",   NULL,   NULL },
 96 { 0x57454300, 0xffffff00, "Winbond",            NULL,   NULL },
 97 { 0x574d4c00, 0xffffff00, "Wolfson",            NULL,   NULL },
 98 { 0x594d4800, 0xffffff00, "Yamaha",             NULL,   NULL },
 99 { 0x83847600, 0xffffff00, "SigmaTel",           NULL,   NULL },
100 { 0,          0,          NULL,                 NULL,   NULL }
101 };
102 
103 static const struct ac97_codec_id snd_ac97_codec_ids[] = {
104 { 0x41445303, 0xffffffff, "AD1819",             patch_ad1819,   NULL },
105 { 0x41445340, 0xffffffff, "AD1881",             patch_ad1881,   NULL },
106 { 0x41445348, 0xffffffff, "AD1881A",            patch_ad1881,   NULL },
107 { 0x41445360, 0xffffffff, "AD1885",             patch_ad1885,   NULL },
108 { 0x41445361, 0xffffffff, "AD1886",             patch_ad1886,   NULL },
109 { 0x41445362, 0xffffffff, "AD1887",             patch_ad1881,   NULL },
110 { 0x41445363, 0xffffffff, "AD1886A",            patch_ad1881,   NULL },
111 { 0x41445368, 0xffffffff, "AD1888",             patch_ad1888,   NULL },
112 { 0x41445370, 0xffffffff, "AD1980",             patch_ad1980,   NULL },
113 { 0x41445372, 0xffffffff, "AD1981A",            patch_ad1981a,  NULL },
114 { 0x41445374, 0xffffffff, "AD1981B",            patch_ad1981b,  NULL },
115 { 0x41445375, 0xffffffff, "AD1985",             patch_ad1985,   NULL },
116 { 0x41445378, 0xffffffff, "AD1986",             patch_ad1986,   NULL },
117 { 0x414b4d00, 0xffffffff, "AK4540",             NULL,           NULL },
118 { 0x414b4d01, 0xffffffff, "AK4542",             NULL,           NULL },
119 { 0x414b4d02, 0xffffffff, "AK4543",             NULL,           NULL },
120 { 0x414b4d06, 0xffffffff, "AK4544A",            NULL,           NULL },
121 { 0x414b4d07, 0xffffffff, "AK4545",             NULL,           NULL },
122 { 0x414c4300, 0xffffff00, "ALC100,100P",        NULL,           NULL },
123 { 0x414c4710, 0xfffffff0, "ALC200,200P",        NULL,           NULL },
124 { 0x414c4721, 0xffffffff, "ALC650D",            NULL,   NULL }, /* already patched */
125 { 0x414c4722, 0xffffffff, "ALC650E",            NULL,   NULL }, /* already patched */
126 { 0x414c4723, 0xffffffff, "ALC650F",            NULL,   NULL }, /* already patched */
127 { 0x414c4720, 0xfffffff0, "ALC650",             patch_alc650,   NULL },
128 { 0x414c4730, 0xffffffff, "ALC101",             NULL,           NULL },
129 { 0x414c4740, 0xfffffff0, "ALC202",             NULL,           NULL },
130 { 0x414c4750, 0xfffffff0, "ALC250",             NULL,           NULL },
131 { 0x414c4760, 0xfffffff0, "ALC655",             patch_alc655,   NULL },
132 { 0x414c4770, 0xfffffff0, "ALC203",             patch_alc203,   NULL },
133 { 0x414c4781, 0xffffffff, "ALC658D",            NULL,   NULL }, /* already patched */
134 { 0x414c4780, 0xfffffff0, "ALC658",             patch_alc655,   NULL },
135 { 0x414c4790, 0xfffffff0, "ALC850",             patch_alc850,   NULL },
136 { 0x415a5401, 0xffffffff, "AZF3328",            patch_aztech_azf3328,   NULL },
137 { 0x434d4941, 0xffffffff, "CMI9738",            patch_cm9738,   NULL },
138 { 0x434d4961, 0xffffffff, "CMI9739",            patch_cm9739,   NULL },
139 { 0x434d4969, 0xffffffff, "CMI9780",            patch_cm9780,   NULL },
140 { 0x434d4978, 0xffffffff, "CMI9761A",           patch_cm9761,   NULL },
141 { 0x434d4982, 0xffffffff, "CMI9761B",           patch_cm9761,   NULL },
142 { 0x434d4983, 0xffffffff, "CMI9761A+",          patch_cm9761,   NULL },
143 { 0x43525900, 0xfffffff8, "CS4297",             NULL,           NULL },
144 { 0x43525910, 0xfffffff8, "CS4297A",            patch_cirrus_spdif,     NULL },
145 { 0x43525920, 0xfffffff8, "CS4298",             patch_cirrus_spdif,             NULL },
146 { 0x43525928, 0xfffffff8, "CS4294",             NULL,           NULL },
147 { 0x43525930, 0xfffffff8, "CS4299",             patch_cirrus_cs4299,    NULL },
148 { 0x43525948, 0xfffffff8, "CS4201",             NULL,           NULL },
149 { 0x43525958, 0xfffffff8, "CS4205",             patch_cirrus_spdif,     NULL },
150 { 0x43525960, 0xfffffff8, "CS4291",             NULL,           NULL },
151 { 0x43525970, 0xfffffff8, "CS4202",             NULL,           NULL },
152 { 0x43585421, 0xffffffff, "HSD11246",           NULL,           NULL }, // SmartMC II
153 { 0x43585428, 0xfffffff8, "Cx20468",            patch_conexant, NULL }, // SmartAMC fixme: the mask might be different
154 { 0x43585430, 0xffffffff, "Cx20468-31",         patch_conexant, NULL },
155 { 0x43585431, 0xffffffff, "Cx20551",           patch_cx20551,  NULL },
156 { 0x44543031, 0xfffffff0, "DT0398",             NULL,           NULL },
157 { 0x454d4328, 0xffffffff, "EM28028",            NULL,           NULL },  // same as TR28028?
158 { 0x45838308, 0xffffffff, "ESS1988",            NULL,           NULL },
159 { 0x48525300, 0xffffff00, "HMP9701",            NULL,           NULL },
160 { 0x49434501, 0xffffffff, "ICE1230",            NULL,           NULL },
161 { 0x49434511, 0xffffffff, "ICE1232",            NULL,           NULL }, // alias VIA VT1611A?
162 { 0x49434514, 0xffffffff, "ICE1232A",           NULL,           NULL },
163 { 0x49434551, 0xffffffff, "VT1616",             patch_vt1616,   NULL }, 
164 { 0x49434552, 0xffffffff, "VT1616i",            patch_vt1616,   NULL }, // VT1616 compatible (chipset integrated)
165 { 0x49544520, 0xffffffff, "IT2226E",            NULL,           NULL },
166 { 0x49544561, 0xffffffff, "IT2646E",            patch_it2646,   NULL },
167 { 0x4e534300, 0xffffffff, "LM4540,43,45,46,48", NULL,           NULL }, // only guess --jk
168 { 0x4e534331, 0xffffffff, "LM4549",             NULL,           NULL },
169 { 0x4e534350, 0xffffffff, "LM4550",             patch_lm4550,   NULL }, // volume wrap fix 
170 { 0x50534304, 0xffffffff, "UCB1400",            patch_ucb1400,  NULL },
171 { 0x53494c20, 0xffffffe0, "Si3036,8",           mpatch_si3036,  mpatch_si3036, AC97_MODEM_PATCH },
172 { 0x53544d02, 0xffffffff, "ST7597",             NULL,           NULL },
173 { 0x54524102, 0xffffffff, "TR28022",            NULL,           NULL },
174 { 0x54524103, 0xffffffff, "TR28023",            NULL,           NULL },
175 { 0x54524106, 0xffffffff, "TR28026",            NULL,           NULL },
176 { 0x54524108, 0xffffffff, "TR28028",            patch_tritech_tr28028,  NULL }, // added by xin jin [07/09/99]
177 { 0x54524123, 0xffffffff, "TR28602",            NULL,           NULL }, // only guess --jk [TR28023 = eMicro EM28023 (new CT1297)]
178 { 0x54584e03, 0xffffffff, "TLV320AIC27",        NULL,           NULL },
179 { 0x54584e20, 0xffffffff, "TLC320AD9xC",        NULL,           NULL },
180 { 0x56494161, 0xffffffff, "VIA1612A",           NULL,           NULL }, // modified ICE1232 with S/PDIF
181 { 0x56494170, 0xffffffff, "VIA1617A",           patch_vt1617a,  NULL }, // modified VT1616 with S/PDIF
182 { 0x56494182, 0xffffffff, "VIA1618",            patch_vt1618,   NULL },
183 { 0x57454301, 0xffffffff, "W83971D",            NULL,           NULL },
184 { 0x574d4c00, 0xffffffff, "WM9701,WM9701A",     NULL,           NULL },
185 { 0x574d4C03, 0xffffffff, "WM9703,WM9707,WM9708,WM9717", patch_wolfson03, NULL},
186 { 0x574d4C04, 0xffffffff, "WM9704M,WM9704Q",    patch_wolfson04, NULL},
187 { 0x574d4C05, 0xffffffff, "WM9705,WM9710",      patch_wolfson05, NULL},
188 { 0x574d4C09, 0xffffffff, "WM9709",             NULL,           NULL},
189 { 0x574d4C12, 0xffffffff, "WM9711,WM9712,WM9715",       patch_wolfson11, NULL},
190 { 0x574d4c13, 0xffffffff, "WM9713,WM9714",      patch_wolfson13, NULL, AC97_DEFAULT_POWER_OFF},
191 { 0x594d4800, 0xffffffff, "YMF743",             patch_yamaha_ymf743,    NULL },
192 { 0x594d4802, 0xffffffff, "YMF752",             NULL,           NULL },
193 { 0x594d4803, 0xffffffff, "YMF753",             patch_yamaha_ymf753,    NULL },
194 { 0x83847600, 0xffffffff, "STAC9700,83,84",     patch_sigmatel_stac9700,        NULL },
195 { 0x83847604, 0xffffffff, "STAC9701,3,4,5",     NULL,           NULL },
196 { 0x83847605, 0xffffffff, "STAC9704",           NULL,           NULL },
197 { 0x83847608, 0xffffffff, "STAC9708,11",        patch_sigmatel_stac9708,        NULL },
198 { 0x83847609, 0xffffffff, "STAC9721,23",        patch_sigmatel_stac9721,        NULL },
199 { 0x83847644, 0xffffffff, "STAC9744",           patch_sigmatel_stac9744,        NULL },
200 { 0x83847650, 0xffffffff, "STAC9750,51",        NULL,           NULL }, // patch?
201 { 0x83847652, 0xffffffff, "STAC9752,53",        NULL,           NULL }, // patch?
202 { 0x83847656, 0xffffffff, "STAC9756,57",        patch_sigmatel_stac9756,        NULL },
203 { 0x83847658, 0xffffffff, "STAC9758,59",        patch_sigmatel_stac9758,        NULL },
204 { 0x83847666, 0xffffffff, "STAC9766,67",        NULL,           NULL }, // patch?
205 { 0,          0,          NULL,                 NULL,           NULL }
206 };
207 
208 
209 static void update_power_regs(struct snd_ac97 *ac97);
210 #ifdef CONFIG_SND_AC97_POWER_SAVE
211 #define ac97_is_power_save_mode(ac97) \
212         ((ac97->scaps & AC97_SCAP_POWER_SAVE) && power_save)
213 #else
214 #define ac97_is_power_save_mode(ac97) 0
215 #endif
216 
217 
218 /*
219  *  I/O routines
220  */
221 
222 static int snd_ac97_valid_reg(struct snd_ac97 *ac97, unsigned short reg)
223 {
224         /* filter some registers for buggy codecs */
225         switch (ac97->id) {
226         case AC97_ID_ST_AC97_ID4:
227                 if (reg == 0x08)
228                         return 0;
229                 /* fall through */
230         case AC97_ID_ST7597:
231                 if (reg == 0x22 || reg == 0x7a)
232                         return 1;
233                 /* fall through */
234         case AC97_ID_AK4540:
235         case AC97_ID_AK4542:
236                 if (reg <= 0x1c || reg == 0x20 || reg == 0x26 || reg >= 0x7c)
237                         return 1;
238                 return 0;
239         case AC97_ID_AD1819:    /* AD1819 */
240         case AC97_ID_AD1881:    /* AD1881 */
241         case AC97_ID_AD1881A:   /* AD1881A */
242                 if (reg >= 0x3a && reg <= 0x6e) /* 0x59 */
243                         return 0;
244                 return 1;
245         case AC97_ID_AD1885:    /* AD1885 */
246         case AC97_ID_AD1886:    /* AD1886 */
247         case AC97_ID_AD1886A:   /* AD1886A - !!verify!! --jk */
248         case AC97_ID_AD1887:    /* AD1887 - !!verify!! --jk */
249                 if (reg == 0x5a)
250                         return 1;
251                 if (reg >= 0x3c && reg <= 0x6e) /* 0x59 */
252                         return 0;
253                 return 1;
254         case AC97_ID_STAC9700:
255         case AC97_ID_STAC9704:
256         case AC97_ID_STAC9705:
257         case AC97_ID_STAC9708:
258         case AC97_ID_STAC9721:
259         case AC97_ID_STAC9744:
260         case AC97_ID_STAC9756:
261                 if (reg <= 0x3a || reg >= 0x5a)
262                         return 1;
263                 return 0;
264         }
265         return 1;
266 }
267 
268 /**
269  * snd_ac97_write - write a value on the given register
270  * @ac97: the ac97 instance
271  * @reg: the register to change
272  * @value: the value to set
273  *
274  * Writes a value on the given register.  This will invoke the write
275  * callback directly after the register check.
276  * This function doesn't change the register cache unlike
277  * #snd_ca97_write_cache(), so use this only when you don't want to
278  * reflect the change to the suspend/resume state.
279  */
280 void snd_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short value)
281 {
282         if (!snd_ac97_valid_reg(ac97, reg))
283                 return;
284         if ((ac97->id & 0xffffff00) == AC97_ID_ALC100) {
285                 /* Fix H/W bug of ALC100/100P */
286                 if (reg == AC97_MASTER || reg == AC97_HEADPHONE)
287                         ac97->bus->ops->write(ac97, AC97_RESET, 0);     /* reset audio codec */
288         }
289         ac97->bus->ops->write(ac97, reg, value);
290 }
291 
292 EXPORT_SYMBOL(snd_ac97_write);
293 
294 /**
295  * snd_ac97_read - read a value from the given register
296  * 
297  * @ac97: the ac97 instance
298  * @reg: the register to read
299  *
300  * Reads a value from the given register.  This will invoke the read
301  * callback directly after the register check.
302  *
303  * Return: The read value.
304  */
305 unsigned short snd_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
306 {
307         if (!snd_ac97_valid_reg(ac97, reg))
308                 return 0;
309         return ac97->bus->ops->read(ac97, reg);
310 }
311 
312 /* read a register - return the cached value if already read */
313 static inline unsigned short snd_ac97_read_cache(struct snd_ac97 *ac97, unsigned short reg)
314 {
315         if (! test_bit(reg, ac97->reg_accessed)) {
316                 ac97->regs[reg] = ac97->bus->ops->read(ac97, reg);
317                 // set_bit(reg, ac97->reg_accessed);
318         }
319         return ac97->regs[reg];
320 }
321 
322 EXPORT_SYMBOL(snd_ac97_read);
323 
324 /**
325  * snd_ac97_write_cache - write a value on the given register and update the cache
326  * @ac97: the ac97 instance
327  * @reg: the register to change
328  * @value: the value to set
329  *
330  * Writes a value on the given register and updates the register
331  * cache.  The cached values are used for the cached-read and the
332  * suspend/resume.
333  */
334 void snd_ac97_write_cache(struct snd_ac97 *ac97, unsigned short reg, unsigned short value)
335 {
336         if (!snd_ac97_valid_reg(ac97, reg))
337                 return;
338         mutex_lock(&ac97->reg_mutex);
339         ac97->regs[reg] = value;
340         ac97->bus->ops->write(ac97, reg, value);
341         set_bit(reg, ac97->reg_accessed);
342         mutex_unlock(&ac97->reg_mutex);
343 }
344 
345 EXPORT_SYMBOL(snd_ac97_write_cache);
346 
347 /**
348  * snd_ac97_update - update the value on the given register
349  * @ac97: the ac97 instance
350  * @reg: the register to change
351  * @value: the value to set
352  *
353  * Compares the value with the register cache and updates the value
354  * only when the value is changed.
355  *
356  * Return: 1 if the value is changed, 0 if no change, or a negative
357  * code on failure.
358  */
359 int snd_ac97_update(struct snd_ac97 *ac97, unsigned short reg, unsigned short value)
360 {
361         int change;
362 
363         if (!snd_ac97_valid_reg(ac97, reg))
364                 return -EINVAL;
365         mutex_lock(&ac97->reg_mutex);
366         change = ac97->regs[reg] != value;
367         if (change) {
368                 ac97->regs[reg] = value;
369                 ac97->bus->ops->write(ac97, reg, value);
370         }
371         set_bit(reg, ac97->reg_accessed);
372         mutex_unlock(&ac97->reg_mutex);
373         return change;
374 }
375 
376 EXPORT_SYMBOL(snd_ac97_update);
377 
378 /**
379  * snd_ac97_update_bits - update the bits on the given register
380  * @ac97: the ac97 instance
381  * @reg: the register to change
382  * @mask: the bit-mask to change
383  * @value: the value to set
384  *
385  * Updates the masked-bits on the given register only when the value
386  * is changed.
387  *
388  * Return: 1 if the bits are changed, 0 if no change, or a negative
389  * code on failure.
390  */
391 int snd_ac97_update_bits(struct snd_ac97 *ac97, unsigned short reg, unsigned short mask, unsigned short value)
392 {
393         int change;
394 
395         if (!snd_ac97_valid_reg(ac97, reg))
396                 return -EINVAL;
397         mutex_lock(&ac97->reg_mutex);
398         change = snd_ac97_update_bits_nolock(ac97, reg, mask, value);
399         mutex_unlock(&ac97->reg_mutex);
400         return change;
401 }
402 
403 EXPORT_SYMBOL(snd_ac97_update_bits);
404 
405 /* no lock version - see snd_ac97_update_bits() */
406 int snd_ac97_update_bits_nolock(struct snd_ac97 *ac97, unsigned short reg,
407                                 unsigned short mask, unsigned short value)
408 {
409         int change;
410         unsigned short old, new;
411 
412         old = snd_ac97_read_cache(ac97, reg);
413         new = (old & ~mask) | (value & mask);
414         change = old != new;
415         if (change) {
416                 ac97->regs[reg] = new;
417                 ac97->bus->ops->write(ac97, reg, new);
418         }
419         set_bit(reg, ac97->reg_accessed);
420         return change;
421 }
422 
423 static int snd_ac97_ad18xx_update_pcm_bits(struct snd_ac97 *ac97, int codec, unsigned short mask, unsigned short value)
424 {
425         int change;
426         unsigned short old, new, cfg;
427 
428         mutex_lock(&ac97->page_mutex);
429         old = ac97->spec.ad18xx.pcmreg[codec];
430         new = (old & ~mask) | (value & mask);
431         change = old != new;
432         if (change) {
433                 mutex_lock(&ac97->reg_mutex);
434                 cfg = snd_ac97_read_cache(ac97, AC97_AD_SERIAL_CFG);
435                 ac97->spec.ad18xx.pcmreg[codec] = new;
436                 /* select single codec */
437                 ac97->bus->ops->write(ac97, AC97_AD_SERIAL_CFG,
438                                  (cfg & ~0x7000) |
439                                  ac97->spec.ad18xx.unchained[codec] | ac97->spec.ad18xx.chained[codec]);
440                 /* update PCM bits */
441                 ac97->bus->ops->write(ac97, AC97_PCM, new);
442                 /* select all codecs */
443                 ac97->bus->ops->write(ac97, AC97_AD_SERIAL_CFG,
444                                  cfg | 0x7000);
445                 mutex_unlock(&ac97->reg_mutex);
446         }
447         mutex_unlock(&ac97->page_mutex);
448         return change;
449 }
450 
451 /*
452  * Controls
453  */
454 
455 static int snd_ac97_info_enum_double(struct snd_kcontrol *kcontrol,
456                                      struct snd_ctl_elem_info *uinfo)
457 {
458         struct ac97_enum *e = (struct ac97_enum *)kcontrol->private_value;
459         
460         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
461         uinfo->count = e->shift_l == e->shift_r ? 1 : 2;
462         uinfo->value.enumerated.items = e->mask;
463         
464         if (uinfo->value.enumerated.item > e->mask - 1)
465                 uinfo->value.enumerated.item = e->mask - 1;
466         strcpy(uinfo->value.enumerated.name, e->texts[uinfo->value.enumerated.item]);
467         return 0;
468 }
469 
470 static int snd_ac97_get_enum_double(struct snd_kcontrol *kcontrol,
471                                     struct snd_ctl_elem_value *ucontrol)
472 {
473         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
474         struct ac97_enum *e = (struct ac97_enum *)kcontrol->private_value;
475         unsigned short val, bitmask;
476         
477         for (bitmask = 1; bitmask < e->mask; bitmask <<= 1)
478                 ;
479         val = snd_ac97_read_cache(ac97, e->reg);
480         ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & (bitmask - 1);
481         if (e->shift_l != e->shift_r)
482                 ucontrol->value.enumerated.item[1] = (val >> e->shift_r) & (bitmask - 1);
483 
484         return 0;
485 }
486 
487 static int snd_ac97_put_enum_double(struct snd_kcontrol *kcontrol,
488                                     struct snd_ctl_elem_value *ucontrol)
489 {
490         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
491         struct ac97_enum *e = (struct ac97_enum *)kcontrol->private_value;
492         unsigned short val;
493         unsigned short mask, bitmask;
494         
495         for (bitmask = 1; bitmask < e->mask; bitmask <<= 1)
496                 ;
497         if (ucontrol->value.enumerated.item[0] > e->mask - 1)
498                 return -EINVAL;
499         val = ucontrol->value.enumerated.item[0] << e->shift_l;
500         mask = (bitmask - 1) << e->shift_l;
501         if (e->shift_l != e->shift_r) {
502                 if (ucontrol->value.enumerated.item[1] > e->mask - 1)
503                         return -EINVAL;
504                 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
505                 mask |= (bitmask - 1) << e->shift_r;
506         }
507         return snd_ac97_update_bits(ac97, e->reg, mask, val);
508 }
509 
510 /* save/restore ac97 v2.3 paging */
511 static int snd_ac97_page_save(struct snd_ac97 *ac97, int reg, struct snd_kcontrol *kcontrol)
512 {
513         int page_save = -1;
514         if ((kcontrol->private_value & (1<<25)) &&
515             (ac97->ext_id & AC97_EI_REV_MASK) >= AC97_EI_REV_23 &&
516             (reg >= 0x60 && reg < 0x70)) {
517                 unsigned short page = (kcontrol->private_value >> 26) & 0x0f;
518                 mutex_lock(&ac97->page_mutex); /* lock paging */
519                 page_save = snd_ac97_read(ac97, AC97_INT_PAGING) & AC97_PAGE_MASK;
520                 snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, page);
521         }
522         return page_save;
523 }
524 
525 static void snd_ac97_page_restore(struct snd_ac97 *ac97, int page_save)
526 {
527         if (page_save >= 0) {
528                 snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, page_save);
529                 mutex_unlock(&ac97->page_mutex); /* unlock paging */
530         }
531 }
532 
533 /* volume and switch controls */
534 static int snd_ac97_info_volsw(struct snd_kcontrol *kcontrol,
535                                struct snd_ctl_elem_info *uinfo)
536 {
537         int mask = (kcontrol->private_value >> 16) & 0xff;
538         int shift = (kcontrol->private_value >> 8) & 0x0f;
539         int rshift = (kcontrol->private_value >> 12) & 0x0f;
540 
541         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
542         uinfo->count = shift == rshift ? 1 : 2;
543         uinfo->value.integer.min = 0;
544         uinfo->value.integer.max = mask;
545         return 0;
546 }
547 
548 static int snd_ac97_get_volsw(struct snd_kcontrol *kcontrol,
549                               struct snd_ctl_elem_value *ucontrol)
550 {
551         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
552         int reg = kcontrol->private_value & 0xff;
553         int shift = (kcontrol->private_value >> 8) & 0x0f;
554         int rshift = (kcontrol->private_value >> 12) & 0x0f;
555         int mask = (kcontrol->private_value >> 16) & 0xff;
556         int invert = (kcontrol->private_value >> 24) & 0x01;
557         int page_save;
558 
559         page_save = snd_ac97_page_save(ac97, reg, kcontrol);
560         ucontrol->value.integer.value[0] = (snd_ac97_read_cache(ac97, reg) >> shift) & mask;
561         if (shift != rshift)
562                 ucontrol->value.integer.value[1] = (snd_ac97_read_cache(ac97, reg) >> rshift) & mask;
563         if (invert) {
564                 ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
565                 if (shift != rshift)
566                         ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
567         }
568         snd_ac97_page_restore(ac97, page_save);
569         return 0;
570 }
571 
572 static int snd_ac97_put_volsw(struct snd_kcontrol *kcontrol,
573                               struct snd_ctl_elem_value *ucontrol)
574 {
575         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
576         int reg = kcontrol->private_value & 0xff;
577         int shift = (kcontrol->private_value >> 8) & 0x0f;
578         int rshift = (kcontrol->private_value >> 12) & 0x0f;
579         int mask = (kcontrol->private_value >> 16) & 0xff;
580         int invert = (kcontrol->private_value >> 24) & 0x01;
581         int err, page_save;
582         unsigned short val, val2, val_mask;
583         
584         page_save = snd_ac97_page_save(ac97, reg, kcontrol);
585         val = (ucontrol->value.integer.value[0] & mask);
586         if (invert)
587                 val = mask - val;
588         val_mask = mask << shift;
589         val = val << shift;
590         if (shift != rshift) {
591                 val2 = (ucontrol->value.integer.value[1] & mask);
592                 if (invert)
593                         val2 = mask - val2;
594                 val_mask |= mask << rshift;
595                 val |= val2 << rshift;
596         }
597         err = snd_ac97_update_bits(ac97, reg, val_mask, val);
598         snd_ac97_page_restore(ac97, page_save);
599 #ifdef CONFIG_SND_AC97_POWER_SAVE
600         /* check analog mixer power-down */
601         if ((val_mask & AC97_PD_EAPD) &&
602             (kcontrol->private_value & (1<<30))) {
603                 if (val & AC97_PD_EAPD)
604                         ac97->power_up &= ~(1 << (reg>>1));
605                 else
606                         ac97->power_up |= 1 << (reg>>1);
607                 update_power_regs(ac97);
608         }
609 #endif
610         return err;
611 }
612 
613 static const struct snd_kcontrol_new snd_ac97_controls_master_mono[2] = {
614 AC97_SINGLE("Master Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
615 AC97_SINGLE("Master Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1)
616 };
617 
618 static const struct snd_kcontrol_new snd_ac97_controls_tone[2] = {
619 AC97_SINGLE("Tone Control - Bass", AC97_MASTER_TONE, 8, 15, 1),
620 AC97_SINGLE("Tone Control - Treble", AC97_MASTER_TONE, 0, 15, 1)
621 };
622 
623 static const struct snd_kcontrol_new snd_ac97_controls_pc_beep[2] = {
624 AC97_SINGLE("Beep Playback Switch", AC97_PC_BEEP, 15, 1, 1),
625 AC97_SINGLE("Beep Playback Volume", AC97_PC_BEEP, 1, 15, 1)
626 };
627 
628 static const struct snd_kcontrol_new snd_ac97_controls_mic_boost =
629         AC97_SINGLE("Mic Boost (+20dB)", AC97_MIC, 6, 1, 0);
630 
631 
632 static const char* std_rec_sel[] = {"Mic", "CD", "Video", "Aux", "Line", "Mix", "Mix Mono", "Phone"};
633 static const char* std_3d_path[] = {"pre 3D", "post 3D"};
634 static const char* std_mix[] = {"Mix", "Mic"};
635 static const char* std_mic[] = {"Mic1", "Mic2"};
636 
637 static const struct ac97_enum std_enum[] = {
638 AC97_ENUM_DOUBLE(AC97_REC_SEL, 8, 0, 8, std_rec_sel),
639 AC97_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 15, 2, std_3d_path),
640 AC97_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 9, 2, std_mix),
641 AC97_ENUM_SINGLE(AC97_GENERAL_PURPOSE, 8, 2, std_mic),
642 };
643 
644 static const struct snd_kcontrol_new snd_ac97_control_capture_src = 
645 AC97_ENUM("Capture Source", std_enum[0]); 
646 
647 static const struct snd_kcontrol_new snd_ac97_control_capture_vol =
648 AC97_DOUBLE("Capture Volume", AC97_REC_GAIN, 8, 0, 15, 0);
649 
650 static const struct snd_kcontrol_new snd_ac97_controls_mic_capture[2] = {
651 AC97_SINGLE("Mic Capture Switch", AC97_REC_GAIN_MIC, 15, 1, 1),
652 AC97_SINGLE("Mic Capture Volume", AC97_REC_GAIN_MIC, 0, 15, 0)
653 };
654 
655 enum {
656         AC97_GENERAL_PCM_OUT = 0,
657         AC97_GENERAL_STEREO_ENHANCEMENT,
658         AC97_GENERAL_3D,
659         AC97_GENERAL_LOUDNESS,
660         AC97_GENERAL_MONO,
661         AC97_GENERAL_MIC,
662         AC97_GENERAL_LOOPBACK
663 };
664 
665 static const struct snd_kcontrol_new snd_ac97_controls_general[7] = {
666 AC97_ENUM("PCM Out Path & Mute", std_enum[1]),
667 AC97_SINGLE("Simulated Stereo Enhancement", AC97_GENERAL_PURPOSE, 14, 1, 0),
668 AC97_SINGLE("3D Control - Switch", AC97_GENERAL_PURPOSE, 13, 1, 0),
669 AC97_SINGLE("Loudness (bass boost)", AC97_GENERAL_PURPOSE, 12, 1, 0),
670 AC97_ENUM("Mono Output Select", std_enum[2]),
671 AC97_ENUM("Mic Select", std_enum[3]),
672 AC97_SINGLE("ADC/DAC Loopback", AC97_GENERAL_PURPOSE, 7, 1, 0)
673 };
674 
675 static const struct snd_kcontrol_new snd_ac97_controls_3d[2] = {
676 AC97_SINGLE("3D Control - Center", AC97_3D_CONTROL, 8, 15, 0),
677 AC97_SINGLE("3D Control - Depth", AC97_3D_CONTROL, 0, 15, 0)
678 };
679 
680 static const struct snd_kcontrol_new snd_ac97_controls_center[2] = {
681 AC97_SINGLE("Center Playback Switch", AC97_CENTER_LFE_MASTER, 7, 1, 1),
682 AC97_SINGLE("Center Playback Volume", AC97_CENTER_LFE_MASTER, 0, 31, 1)
683 };
684 
685 static const struct snd_kcontrol_new snd_ac97_controls_lfe[2] = {
686 AC97_SINGLE("LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 1, 1),
687 AC97_SINGLE("LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 31, 1)
688 };
689 
690 static const struct snd_kcontrol_new snd_ac97_control_eapd =
691 AC97_SINGLE("External Amplifier", AC97_POWERDOWN, 15, 1, 1);
692 
693 static const struct snd_kcontrol_new snd_ac97_controls_modem_switches[2] = {
694 AC97_SINGLE("Off-hook Switch", AC97_GPIO_STATUS, 0, 1, 0),
695 AC97_SINGLE("Caller ID Switch", AC97_GPIO_STATUS, 2, 1, 0)
696 };
697 
698 /* change the existing EAPD control as inverted */
699 static void set_inv_eapd(struct snd_ac97 *ac97, struct snd_kcontrol *kctl)
700 {
701         kctl->private_value = AC97_SINGLE_VALUE(AC97_POWERDOWN, 15, 1, 0);
702         snd_ac97_update_bits(ac97, AC97_POWERDOWN, (1<<15), (1<<15)); /* EAPD up */
703         ac97->scaps |= AC97_SCAP_INV_EAPD;
704 }
705 
706 static int snd_ac97_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
707 {
708         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
709         uinfo->count = 1;
710         return 0;
711 }
712                         
713 static int snd_ac97_spdif_cmask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
714 {
715         ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
716                                            IEC958_AES0_NONAUDIO |
717                                            IEC958_AES0_CON_EMPHASIS_5015 |
718                                            IEC958_AES0_CON_NOT_COPYRIGHT;
719         ucontrol->value.iec958.status[1] = IEC958_AES1_CON_CATEGORY |
720                                            IEC958_AES1_CON_ORIGINAL;
721         ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS;
722         return 0;
723 }
724                         
725 static int snd_ac97_spdif_pmask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
726 {
727         /* FIXME: AC'97 spec doesn't say which bits are used for what */
728         ucontrol->value.iec958.status[0] = IEC958_AES0_PROFESSIONAL |
729                                            IEC958_AES0_NONAUDIO |
730                                            IEC958_AES0_PRO_FS |
731                                            IEC958_AES0_PRO_EMPHASIS_5015;
732         return 0;
733 }
734 
735 static int snd_ac97_spdif_default_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
736 {
737         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
738 
739         mutex_lock(&ac97->reg_mutex);
740         ucontrol->value.iec958.status[0] = ac97->spdif_status & 0xff;
741         ucontrol->value.iec958.status[1] = (ac97->spdif_status >> 8) & 0xff;
742         ucontrol->value.iec958.status[2] = (ac97->spdif_status >> 16) & 0xff;
743         ucontrol->value.iec958.status[3] = (ac97->spdif_status >> 24) & 0xff;
744         mutex_unlock(&ac97->reg_mutex);
745         return 0;
746 }
747                         
748 static int snd_ac97_spdif_default_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
749 {
750         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
751         unsigned int new = 0;
752         unsigned short val = 0;
753         int change;
754 
755         new = val = ucontrol->value.iec958.status[0] & (IEC958_AES0_PROFESSIONAL|IEC958_AES0_NONAUDIO);
756         if (ucontrol->value.iec958.status[0] & IEC958_AES0_PROFESSIONAL) {
757                 new |= ucontrol->value.iec958.status[0] & (IEC958_AES0_PRO_FS|IEC958_AES0_PRO_EMPHASIS_5015);
758                 switch (new & IEC958_AES0_PRO_FS) {
759                 case IEC958_AES0_PRO_FS_44100: val |= 0<<12; break;
760                 case IEC958_AES0_PRO_FS_48000: val |= 2<<12; break;
761                 case IEC958_AES0_PRO_FS_32000: val |= 3<<12; break;
762                 default:                       val |= 1<<12; break;
763                 }
764                 if ((new & IEC958_AES0_PRO_EMPHASIS) == IEC958_AES0_PRO_EMPHASIS_5015)
765                         val |= 1<<3;
766         } else {
767                 new |= ucontrol->value.iec958.status[0] & (IEC958_AES0_CON_EMPHASIS_5015|IEC958_AES0_CON_NOT_COPYRIGHT);
768                 new |= ((ucontrol->value.iec958.status[1] & (IEC958_AES1_CON_CATEGORY|IEC958_AES1_CON_ORIGINAL)) << 8);
769                 new |= ((ucontrol->value.iec958.status[3] & IEC958_AES3_CON_FS) << 24);
770                 if ((new & IEC958_AES0_CON_EMPHASIS) == IEC958_AES0_CON_EMPHASIS_5015)
771                         val |= 1<<3;
772                 if (!(new & IEC958_AES0_CON_NOT_COPYRIGHT))
773                         val |= 1<<2;
774                 val |= ((new >> 8) & 0xff) << 4;        // category + original
775                 switch ((new >> 24) & 0xff) {
776                 case IEC958_AES3_CON_FS_44100: val |= 0<<12; break;
777                 case IEC958_AES3_CON_FS_48000: val |= 2<<12; break;
778                 case IEC958_AES3_CON_FS_32000: val |= 3<<12; break;
779                 default:                       val |= 1<<12; break;
780                 }
781         }
782 
783         mutex_lock(&ac97->reg_mutex);
784         change = ac97->spdif_status != new;
785         ac97->spdif_status = new;
786 
787         if (ac97->flags & AC97_CS_SPDIF) {
788                 int x = (val >> 12) & 0x03;
789                 switch (x) {
790                 case 0: x = 1; break;  // 44.1
791                 case 2: x = 0; break;  // 48.0
792                 default: x = 0; break; // illegal.
793                 }
794                 change |= snd_ac97_update_bits_nolock(ac97, AC97_CSR_SPDIF, 0x3fff, ((val & 0xcfff) | (x << 12)));
795         } else if (ac97->flags & AC97_CX_SPDIF) {
796                 int v;
797                 v = new & (IEC958_AES0_CON_EMPHASIS_5015|IEC958_AES0_CON_NOT_COPYRIGHT) ? 0 : AC97_CXR_COPYRGT;
798                 v |= new & IEC958_AES0_NONAUDIO ? AC97_CXR_SPDIF_AC3 : AC97_CXR_SPDIF_PCM;
799                 change |= snd_ac97_update_bits_nolock(ac97, AC97_CXR_AUDIO_MISC, 
800                                                       AC97_CXR_SPDIF_MASK | AC97_CXR_COPYRGT,
801                                                       v);
802         } else if (ac97->id == AC97_ID_YMF743) {
803                 change |= snd_ac97_update_bits_nolock(ac97,
804                                                       AC97_YMF7X3_DIT_CTRL,
805                                                       0xff38,
806                                                       ((val << 4) & 0xff00) |
807                                                       ((val << 2) & 0x0038));
808         } else {
809                 unsigned short extst = snd_ac97_read_cache(ac97, AC97_EXTENDED_STATUS);
810                 snd_ac97_update_bits_nolock(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, 0); /* turn off */
811 
812                 change |= snd_ac97_update_bits_nolock(ac97, AC97_SPDIF, 0x3fff, val);
813                 if (extst & AC97_EA_SPDIF) {
814                         snd_ac97_update_bits_nolock(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, AC97_EA_SPDIF); /* turn on again */
815                 }
816         }
817         mutex_unlock(&ac97->reg_mutex);
818 
819         return change;
820 }
821 
822 static int snd_ac97_put_spsa(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
823 {
824         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
825         int reg = kcontrol->private_value & 0xff;
826         int shift = (kcontrol->private_value >> 8) & 0xff;
827         int mask = (kcontrol->private_value >> 16) & 0xff;
828         // int invert = (kcontrol->private_value >> 24) & 0xff;
829         unsigned short value, old, new;
830         int change;
831 
832         value = (ucontrol->value.integer.value[0] & mask);
833 
834         mutex_lock(&ac97->reg_mutex);
835         mask <<= shift;
836         value <<= shift;
837         old = snd_ac97_read_cache(ac97, reg);
838         new = (old & ~mask) | value;
839         change = old != new;
840 
841         if (change) {
842                 unsigned short extst = snd_ac97_read_cache(ac97, AC97_EXTENDED_STATUS);
843                 snd_ac97_update_bits_nolock(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, 0); /* turn off */
844                 change = snd_ac97_update_bits_nolock(ac97, reg, mask, value);
845                 if (extst & AC97_EA_SPDIF)
846                         snd_ac97_update_bits_nolock(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, AC97_EA_SPDIF); /* turn on again */
847         }
848         mutex_unlock(&ac97->reg_mutex);
849         return change;
850 }
851 
852 static const struct snd_kcontrol_new snd_ac97_controls_spdif[5] = {
853         {
854                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
855                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
856                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
857                 .info = snd_ac97_spdif_mask_info,
858                 .get = snd_ac97_spdif_cmask_get,
859         },
860         {
861                 .access = SNDRV_CTL_ELEM_ACCESS_READ,
862                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
863                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
864                 .info = snd_ac97_spdif_mask_info,
865                 .get = snd_ac97_spdif_pmask_get,
866         },
867         {
868                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
869                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
870                 .info = snd_ac97_spdif_mask_info,
871                 .get = snd_ac97_spdif_default_get,
872                 .put = snd_ac97_spdif_default_put,
873         },
874 
875         AC97_SINGLE(SNDRV_CTL_NAME_IEC958("",PLAYBACK,SWITCH),AC97_EXTENDED_STATUS, 2, 1, 0),
876         {
877                 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
878                 .name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,NONE) "AC97-SPSA",
879                 .info = snd_ac97_info_volsw,
880                 .get = snd_ac97_get_volsw,
881                 .put = snd_ac97_put_spsa,
882                 .private_value = AC97_SINGLE_VALUE(AC97_EXTENDED_STATUS, 4, 3, 0)
883         },
884 };
885 
886 #define AD18XX_PCM_BITS(xname, codec, lshift, rshift, mask) \
887 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ac97_ad18xx_pcm_info_bits, \
888   .get = snd_ac97_ad18xx_pcm_get_bits, .put = snd_ac97_ad18xx_pcm_put_bits, \
889   .private_value = (codec) | ((lshift) << 8) | ((rshift) << 12) | ((mask) << 16) }
890 
891 static int snd_ac97_ad18xx_pcm_info_bits(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
892 {
893         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
894         int mask = (kcontrol->private_value >> 16) & 0x0f;
895         int lshift = (kcontrol->private_value >> 8) & 0x0f;
896         int rshift = (kcontrol->private_value >> 12) & 0x0f;
897 
898         uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
899         if (lshift != rshift && (ac97->flags & AC97_STEREO_MUTES))
900                 uinfo->count = 2;
901         else
902                 uinfo->count = 1;
903         uinfo->value.integer.min = 0;
904         uinfo->value.integer.max = mask;
905         return 0;
906 }
907 
908 static int snd_ac97_ad18xx_pcm_get_bits(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
909 {
910         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
911         int codec = kcontrol->private_value & 3;
912         int lshift = (kcontrol->private_value >> 8) & 0x0f;
913         int rshift = (kcontrol->private_value >> 12) & 0x0f;
914         int mask = (kcontrol->private_value >> 16) & 0xff;
915         
916         ucontrol->value.integer.value[0] = mask - ((ac97->spec.ad18xx.pcmreg[codec] >> lshift) & mask);
917         if (lshift != rshift && (ac97->flags & AC97_STEREO_MUTES))
918                 ucontrol->value.integer.value[1] = mask - ((ac97->spec.ad18xx.pcmreg[codec] >> rshift) & mask);
919         return 0;
920 }
921 
922 static int snd_ac97_ad18xx_pcm_put_bits(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
923 {
924         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
925         int codec = kcontrol->private_value & 3;
926         int lshift = (kcontrol->private_value >> 8) & 0x0f;
927         int rshift = (kcontrol->private_value >> 12) & 0x0f;
928         int mask = (kcontrol->private_value >> 16) & 0xff;
929         unsigned short val, valmask;
930         
931         val = (mask - (ucontrol->value.integer.value[0] & mask)) << lshift;
932         valmask = mask << lshift;
933         if (lshift != rshift && (ac97->flags & AC97_STEREO_MUTES)) {
934                 val |= (mask - (ucontrol->value.integer.value[1] & mask)) << rshift;
935                 valmask |= mask << rshift;
936         }
937         return snd_ac97_ad18xx_update_pcm_bits(ac97, codec, valmask, val);
938 }
939 
940 #define AD18XX_PCM_VOLUME(xname, codec) \
941 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .info = snd_ac97_ad18xx_pcm_info_volume, \
942   .get = snd_ac97_ad18xx_pcm_get_volume, .put = snd_ac97_ad18xx_pcm_put_volume, \
943   .private_value = codec }
944 
945 static int snd_ac97_ad18xx_pcm_info_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
946 {
947         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
948         uinfo->count = 2;
949         uinfo->value.integer.min = 0;
950         uinfo->value.integer.max = 31;
951         return 0;
952 }
953 
954 static int snd_ac97_ad18xx_pcm_get_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
955 {
956         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
957         int codec = kcontrol->private_value & 3;
958         
959         mutex_lock(&ac97->page_mutex);
960         ucontrol->value.integer.value[0] = 31 - ((ac97->spec.ad18xx.pcmreg[codec] >> 0) & 31);
961         ucontrol->value.integer.value[1] = 31 - ((ac97->spec.ad18xx.pcmreg[codec] >> 8) & 31);
962         mutex_unlock(&ac97->page_mutex);
963         return 0;
964 }
965 
966 static int snd_ac97_ad18xx_pcm_put_volume(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
967 {
968         struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
969         int codec = kcontrol->private_value & 3;
970         unsigned short val1, val2;
971         
972         val1 = 31 - (ucontrol->value.integer.value[0] & 31);
973         val2 = 31 - (ucontrol->value.integer.value[1] & 31);
974         return snd_ac97_ad18xx_update_pcm_bits(ac97, codec, 0x1f1f, (val1 << 8) | val2);
975 }
976 
977 static const struct snd_kcontrol_new snd_ac97_controls_ad18xx_pcm[2] = {
978 AD18XX_PCM_BITS("PCM Playback Switch", 0, 15, 7, 1),
979 AD18XX_PCM_VOLUME("PCM Playback Volume", 0)
980 };
981 
982 static const struct snd_kcontrol_new snd_ac97_controls_ad18xx_surround[2] = {
983 AD18XX_PCM_BITS("Surround Playback Switch", 1, 15, 7, 1),
984 AD18XX_PCM_VOLUME("Surround Playback Volume", 1)
985 };
986 
987 static const struct snd_kcontrol_new snd_ac97_controls_ad18xx_center[2] = {
988 AD18XX_PCM_BITS("Center Playback Switch", 2, 15, 15, 1),
989 AD18XX_PCM_BITS("Center Playback Volume", 2, 8, 8, 31)
990 };
991 
992 static const struct snd_kcontrol_new snd_ac97_controls_ad18xx_lfe[2] = {
993 AD18XX_PCM_BITS("LFE Playback Switch", 2, 7, 7, 1),
994 AD18XX_PCM_BITS("LFE Playback Volume", 2, 0, 0, 31)
995 };
996 
997 /*
998  *
999  */
1000 
1001 static void snd_ac97_powerdown(struct snd_ac97 *ac97);
1002 
1003 static int snd_ac97_bus_free(struct snd_ac97_bus *bus)
1004 {
1005         if (bus) {
1006                 snd_ac97_bus_proc_done(bus);
1007                 kfree(bus->pcms);
1008                 if (bus->private_free)
1009                         bus->private_free(bus);
1010                 kfree(bus);
1011         }
1012         return 0;
1013 }
1014 
1015 static int snd_ac97_bus_dev_free(struct snd_device *device)
1016 {
1017         struct snd_ac97_bus *bus = device->device_data;
1018         return snd_ac97_bus_free(bus);
1019 }
1020 
1021 static int snd_ac97_free(struct snd_ac97 *ac97)
1022 {
1023         if (ac97) {
1024 #ifdef CONFIG_SND_AC97_POWER_SAVE
1025                 cancel_delayed_work_sync(&ac97->power_work);
1026 #endif
1027                 snd_ac97_proc_done(ac97);
1028                 if (ac97->bus)
1029                         ac97->bus->codec[ac97->num] = NULL;
1030                 if (ac97->private_free)
1031                         ac97->private_free(ac97);
1032                 kfree(ac97);
1033         }
1034         return 0;
1035 }
1036 
1037 static int snd_ac97_dev_free(struct snd_device *device)
1038 {
1039         struct snd_ac97 *ac97 = device->device_data;
1040         snd_ac97_powerdown(ac97); /* for avoiding click noises during shut down */
1041         return snd_ac97_free(ac97);
1042 }
1043 
1044 static int snd_ac97_try_volume_mix(struct snd_ac97 * ac97, int reg)
1045 {
1046         unsigned short val, mask = AC97_MUTE_MASK_MONO;
1047 
1048         if (! snd_ac97_valid_reg(ac97, reg))
1049                 return 0;
1050 
1051         switch (reg) {
1052         case AC97_MASTER_TONE:
1053                 return ac97->caps & AC97_BC_BASS_TREBLE ? 1 : 0;
1054         case AC97_HEADPHONE:
1055                 return ac97->caps & AC97_BC_HEADPHONE ? 1 : 0;
1056         case AC97_REC_GAIN_MIC:
1057                 return ac97->caps & AC97_BC_DEDICATED_MIC ? 1 : 0;
1058         case AC97_3D_CONTROL:
1059                 if (ac97->caps & AC97_BC_3D_TECH_ID_MASK) {
1060                         val = snd_ac97_read(ac97, reg);
1061                         /* if nonzero - fixed and we can't set it */
1062                         return val == 0;
1063                 }
1064                 return 0;
1065         case AC97_CENTER_LFE_MASTER:    /* center */
1066                 if ((ac97->ext_id & AC97_EI_CDAC) == 0)
1067                         return 0;
1068                 break;
1069         case AC97_CENTER_LFE_MASTER+1:  /* lfe */
1070                 if ((ac97->ext_id & AC97_EI_LDAC) == 0)
1071                         return 0;
1072                 reg = AC97_CENTER_LFE_MASTER;
1073                 mask = 0x0080;
1074                 break;
1075         case AC97_SURROUND_MASTER:
1076                 if ((ac97->ext_id & AC97_EI_SDAC) == 0)
1077                         return 0;
1078                 break;
1079         }
1080 
1081         val = snd_ac97_read(ac97, reg);
1082         if (!(val & mask)) {
1083                 /* nothing seems to be here - mute flag is not set */
1084                 /* try another test */
1085                 snd_ac97_write_cache(ac97, reg, val | mask);
1086                 val = snd_ac97_read(ac97, reg);
1087                 val = snd_ac97_read(ac97, reg);
1088                 if (!(val & mask))
1089                         return 0;       /* nothing here */
1090         }
1091         return 1;               /* success, useable */
1092 }
1093 
1094 static void check_volume_resolution(struct snd_ac97 *ac97, int reg, unsigned char *lo_max, unsigned char *hi_max)
1095 {
1096         unsigned short cbit[3] = { 0x20, 0x10, 0x01 };
1097         unsigned char max[3] = { 63, 31, 15 };
1098         int i;
1099 
1100         /* first look up the static resolution table */
1101         if (ac97->res_table) {
1102                 const struct snd_ac97_res_table *tbl;
1103                 for (tbl = ac97->res_table; tbl->reg; tbl++) {
1104                         if (tbl->reg == reg) {
1105                                 *lo_max = tbl->bits & 0xff;
1106                                 *hi_max = (tbl->bits >> 8) & 0xff;
1107                                 return;
1108                         }
1109                 }
1110         }
1111 
1112         *lo_max = *hi_max = 0;
1113         for (i = 0 ; i < ARRAY_SIZE(cbit); i++) {
1114                 unsigned short val;
1115                 snd_ac97_write(
1116                         ac97, reg,
1117                         AC97_MUTE_MASK_STEREO | cbit[i] | (cbit[i] << 8)
1118                 );
1119                 /* Do the read twice due to buffers on some ac97 codecs.
1120                  * e.g. The STAC9704 returns exactly what you wrote to the register
1121                  * if you read it immediately. This causes the detect routine to fail.
1122                  */
1123                 val = snd_ac97_read(ac97, reg);
1124                 val = snd_ac97_read(ac97, reg);
1125                 if (! *lo_max && (val & 0x7f) == cbit[i])
1126                         *lo_max = max[i];
1127                 if (! *hi_max && ((val >> 8) & 0x7f) == cbit[i])
1128                         *hi_max = max[i];
1129                 if (*lo_max && *hi_max)
1130                         break;
1131         }
1132 }
1133 
1134 static int snd_ac97_try_bit(struct snd_ac97 * ac97, int reg, int bit)
1135 {
1136         unsigned short mask, val, orig, res;
1137 
1138         mask = 1 << bit;
1139         orig = snd_ac97_read(ac97, reg);
1140         val = orig ^ mask;
1141         snd_ac97_write(ac97, reg, val);
1142         res = snd_ac97_read(ac97, reg);
1143         snd_ac97_write_cache(ac97, reg, orig);
1144         return res == val;
1145 }
1146 
1147 /* check the volume resolution of center/lfe */
1148 static void snd_ac97_change_volume_params2(struct snd_ac97 * ac97, int reg, int shift, unsigned char *max)
1149 {
1150         unsigned short val, val1;
1151 
1152         *max = 63;
1153         val = AC97_MUTE_MASK_STEREO | (0x20 << shift);
1154         snd_ac97_write(ac97, reg, val);
1155         val1 = snd_ac97_read(ac97, reg);
1156         if (val != val1) {
1157                 *max = 31;
1158         }
1159         /* reset volume to zero */
1160         snd_ac97_write_cache(ac97, reg, AC97_MUTE_MASK_STEREO);
1161 }
1162 
1163 static inline int printable(unsigned int x)
1164 {
1165         x &= 0xff;
1166         if (x < ' ' || x >= 0x71) {
1167                 if (x <= 0x89)
1168                         return x - 0x71 + 'A';
1169                 return '?';
1170         }
1171         return x;
1172 }
1173 
1174 static struct snd_kcontrol *snd_ac97_cnew(const struct snd_kcontrol_new *_template,
1175                                           struct snd_ac97 * ac97)
1176 {
1177         struct snd_kcontrol_new template;
1178         memcpy(&template, _template, sizeof(template));
1179         template.index = ac97->num;
1180         return snd_ctl_new1(&template, ac97);
1181 }
1182 
1183 /*
1184  * create mute switch(es) for normal stereo controls
1185  */
1186 static int snd_ac97_cmute_new_stereo(struct snd_card *card, char *name, int reg,
1187                                      int check_stereo, int check_amix,
1188                                      struct snd_ac97 *ac97)
1189 {
1190         struct snd_kcontrol *kctl;
1191         int err;
1192         unsigned short val, val1, mute_mask;
1193 
1194         if (! snd_ac97_valid_reg(ac97, reg))
1195                 return 0;
1196 
1197         mute_mask = AC97_MUTE_MASK_MONO;
1198         val = snd_ac97_read(ac97, reg);
1199         if (check_stereo || (ac97->flags & AC97_STEREO_MUTES)) {
1200                 /* check whether both mute bits work */
1201                 val1 = val | AC97_MUTE_MASK_STEREO;
1202                 snd_ac97_write(ac97, reg, val1);
1203                 if (val1 == snd_ac97_read(ac97, reg))
1204                         mute_mask = AC97_MUTE_MASK_STEREO;
1205         }
1206         if (mute_mask == AC97_MUTE_MASK_STEREO) {
1207                 struct snd_kcontrol_new tmp = AC97_DOUBLE(name, reg, 15, 7, 1, 1);
1208                 if (check_amix)
1209                         tmp.private_value |= (1 << 30);
1210                 tmp.index = ac97->num;
1211                 kctl = snd_ctl_new1(&tmp, ac97);
1212         } else {
1213                 struct snd_kcontrol_new tmp = AC97_SINGLE(name, reg, 15, 1, 1);
1214                 if (check_amix)
1215                         tmp.private_value |= (1 << 30);
1216                 tmp.index = ac97->num;
1217                 kctl = snd_ctl_new1(&tmp, ac97);
1218         }
1219         err = snd_ctl_add(card, kctl);
1220         if (err < 0)
1221                 return err;
1222         /* mute as default */
1223         snd_ac97_write_cache(ac97, reg, val | mute_mask);
1224         return 0;
1225 }
1226 
1227 /*
1228  * set dB information
1229  */
1230 static const DECLARE_TLV_DB_SCALE(db_scale_4bit, -4500, 300, 0);
1231 static const DECLARE_TLV_DB_SCALE(db_scale_5bit, -4650, 150, 0);
1232 static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
1233 static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
1234 static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
1235 
1236 static const unsigned int *find_db_scale(unsigned int maxval)
1237 {
1238         switch (maxval) {
1239         case 0x0f: return db_scale_4bit;
1240         case 0x1f: return db_scale_5bit;
1241         case 0x3f: return db_scale_6bit;
1242         }
1243         return NULL;
1244 }
1245 
1246 static void set_tlv_db_scale(struct snd_kcontrol *kctl, const unsigned int *tlv)
1247 {
1248         kctl->tlv.p = tlv;
1249         if (tlv)
1250                 kctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
1251 }
1252 
1253 /*
1254  * create a volume for normal stereo/mono controls
1255  */
1256 static int snd_ac97_cvol_new(struct snd_card *card, char *name, int reg, unsigned int lo_max,
1257                              unsigned int hi_max, struct snd_ac97 *ac97)
1258 {
1259         int err;
1260         struct snd_kcontrol *kctl;
1261 
1262         if (! snd_ac97_valid_reg(ac97, reg))
1263                 return 0;
1264         if (hi_max) {
1265                 /* invert */
1266                 struct snd_kcontrol_new tmp = AC97_DOUBLE(name, reg, 8, 0, lo_max, 1);
1267                 tmp.index = ac97->num;
1268                 kctl = snd_ctl_new1(&tmp, ac97);
1269         } else {
1270                 /* invert */
1271                 struct snd_kcontrol_new tmp = AC97_SINGLE(name, reg, 0, lo_max, 1);
1272                 tmp.index = ac97->num;
1273                 kctl = snd_ctl_new1(&tmp, ac97);
1274         }
1275         if (!kctl)
1276                 return -ENOMEM;
1277         if (reg >= AC97_PHONE && reg <= AC97_PCM)
1278                 set_tlv_db_scale(kctl, db_scale_5bit_12db_max);
1279         else
1280                 set_tlv_db_scale(kctl, find_db_scale(lo_max));
1281         err = snd_ctl_add(card, kctl);
1282         if (err < 0)
1283                 return err;
1284         snd_ac97_write_cache(
1285                 ac97, reg,
1286                 (snd_ac97_read(ac97, reg) & AC97_MUTE_MASK_STEREO)
1287                 | lo_max | (hi_max << 8)
1288         );
1289         return 0;
1290 }
1291 
1292 /*
1293  * create a mute-switch and a volume for normal stereo/mono controls
1294  */
1295 static int snd_ac97_cmix_new_stereo(struct snd_card *card, const char *pfx,
1296                                     int reg, int check_stereo, int check_amix,
1297                                     struct snd_ac97 *ac97)
1298 {
1299         int err;
1300         char name[SNDRV_CTL_ELEM_ID_NAME_MAXLEN];
1301         unsigned char lo_max, hi_max;
1302 
1303         if (! snd_ac97_valid_reg(ac97, reg))
1304                 return 0;
1305 
1306         if (snd_ac97_try_bit(ac97, reg, 15)) {
1307                 sprintf(name, "%s Switch", pfx);
1308                 if ((err = snd_ac97_cmute_new_stereo(card, name, reg,
1309                                                      check_stereo, check_amix,
1310                                                      ac97)) < 0)
1311                         return err;
1312         }
1313         check_volume_resolution(ac97, reg, &lo_max, &hi_max);
1314         if (lo_max) {
1315                 sprintf(name, "%s Volume", pfx);
1316                 if ((err = snd_ac97_cvol_new(card, name, reg, lo_max, hi_max, ac97)) < 0)
1317                         return err;
1318         }
1319         return 0;
1320 }
1321 
1322 #define snd_ac97_cmix_new(card, pfx, reg, acheck, ac97) \
1323         snd_ac97_cmix_new_stereo(card, pfx, reg, 0, acheck, ac97)
1324 #define snd_ac97_cmute_new(card, name, reg, acheck, ac97) \
1325         snd_ac97_cmute_new_stereo(card, name, reg, 0, acheck, ac97)
1326 
1327 static unsigned int snd_ac97_determine_spdif_rates(struct snd_ac97 *ac97);
1328 
1329 static int snd_ac97_mixer_build(struct snd_ac97 * ac97)
1330 {
1331         struct snd_card *card = ac97->bus->card;
1332         struct snd_kcontrol *kctl;
1333         int err;
1334         unsigned int idx;
1335         unsigned char max;
1336 
1337         /* build master controls */
1338         /* AD claims to remove this control from AD1887, although spec v2.2 does not allow this */
1339         if (snd_ac97_try_volume_mix(ac97, AC97_MASTER)) {
1340                 if (ac97->flags & AC97_HAS_NO_MASTER_VOL)
1341                         err = snd_ac97_cmute_new(card, "Master Playback Switch",
1342                                                  AC97_MASTER, 0, ac97);
1343                 else
1344                         err = snd_ac97_cmix_new(card, "Master Playback",
1345                                                 AC97_MASTER, 0, ac97);
1346                 if (err < 0)
1347                         return err;
1348         }
1349 
1350         ac97->regs[AC97_CENTER_LFE_MASTER] = AC97_MUTE_MASK_STEREO;
1351 
1352         /* build center controls */
1353         if ((snd_ac97_try_volume_mix(ac97, AC97_CENTER_LFE_MASTER)) 
1354                 && !(ac97->flags & AC97_AD_MULTI)) {
1355                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_center[0], ac97))) < 0)
1356                         return err;
1357                 if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_center[1], ac97))) < 0)
1358                         return err;
1359                 snd_ac97_change_volume_params2(ac97, AC97_CENTER_LFE_MASTER, 0, &max);
1360                 kctl->private_value &= ~(0xff << 16);
1361                 kctl->private_value |= (int)max << 16;
1362                 set_tlv_db_scale(kctl, find_db_scale(max));
1363                 snd_ac97_write_cache(ac97, AC97_CENTER_LFE_MASTER, ac97->regs[AC97_CENTER_LFE_MASTER] | max);
1364         }
1365 
1366         /* build LFE controls */
1367         if ((snd_ac97_try_volume_mix(ac97, AC97_CENTER_LFE_MASTER+1))
1368                 && !(ac97->flags & AC97_AD_MULTI)) {
1369                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_lfe[0], ac97))) < 0)
1370                         return err;
1371                 if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_lfe[1], ac97))) < 0)
1372                         return err;
1373                 snd_ac97_change_volume_params2(ac97, AC97_CENTER_LFE_MASTER, 8, &max);
1374                 kctl->private_value &= ~(0xff << 16);
1375                 kctl->private_value |= (int)max << 16;
1376                 set_tlv_db_scale(kctl, find_db_scale(max));
1377                 snd_ac97_write_cache(ac97, AC97_CENTER_LFE_MASTER, ac97->regs[AC97_CENTER_LFE_MASTER] | max << 8);
1378         }
1379 
1380         /* build surround controls */
1381         if ((snd_ac97_try_volume_mix(ac97, AC97_SURROUND_MASTER)) 
1382                 && !(ac97->flags & AC97_AD_MULTI)) {
1383                 /* Surround Master (0x38) is with stereo mutes */
1384                 if ((err = snd_ac97_cmix_new_stereo(card, "Surround Playback",
1385                                                     AC97_SURROUND_MASTER, 1, 0,
1386                                                     ac97)) < 0)
1387                         return err;
1388         }
1389 
1390         /* build headphone controls */
1391         if (snd_ac97_try_volume_mix(ac97, AC97_HEADPHONE)) {
1392                 if ((err = snd_ac97_cmix_new(card, "Headphone Playback",
1393                                              AC97_HEADPHONE, 0, ac97)) < 0)
1394                         return err;
1395         }
1396         
1397         /* build master mono controls */
1398         if (snd_ac97_try_volume_mix(ac97, AC97_MASTER_MONO)) {
1399                 if ((err = snd_ac97_cmix_new(card, "Master Mono Playback",
1400                                              AC97_MASTER_MONO, 0, ac97)) < 0)
1401                         return err;
1402         }
1403         
1404         /* build master tone controls */
1405         if (!(ac97->flags & AC97_HAS_NO_TONE)) {
1406                 if (snd_ac97_try_volume_mix(ac97, AC97_MASTER_TONE)) {
1407                         for (idx = 0; idx < 2; idx++) {
1408                                 if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_tone[idx], ac97))) < 0)
1409                                         return err;
1410                                 if (ac97->id == AC97_ID_YMF743 ||
1411                                     ac97->id == AC97_ID_YMF753) {
1412                                         kctl->private_value &= ~(0xff << 16);
1413                                         kctl->private_value |= 7 << 16;
1414                                 }
1415                         }
1416                         snd_ac97_write_cache(ac97, AC97_MASTER_TONE, 0x0f0f);
1417                 }
1418         }
1419         
1420         /* build Beep controls */
1421         if (!(ac97->flags & AC97_HAS_NO_PC_BEEP) && 
1422                 ((ac97->flags & AC97_HAS_PC_BEEP) ||
1423             snd_ac97_try_volume_mix(ac97, AC97_PC_BEEP))) {
1424                 for (idx = 0; idx < 2; idx++)
1425                         if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_pc_beep[idx], ac97))) < 0)
1426                                 return err;
1427                 set_tlv_db_scale(kctl, db_scale_4bit);
1428                 snd_ac97_write_cache(
1429                         ac97,
1430                         AC97_PC_BEEP,
1431                         (snd_ac97_read(ac97, AC97_PC_BEEP)
1432                                 | AC97_MUTE_MASK_MONO | 0x001e)
1433                 );
1434         }
1435         
1436         /* build Phone controls */
1437         if (!(ac97->flags & AC97_HAS_NO_PHONE)) {
1438                 if (snd_ac97_try_volume_mix(ac97, AC97_PHONE)) {
1439                         if ((err = snd_ac97_cmix_new(card, "Phone Playback",
1440                                                      AC97_PHONE, 1, ac97)) < 0)
1441                                 return err;
1442                 }
1443         }
1444         
1445         /* build MIC controls */
1446         if (!(ac97->flags & AC97_HAS_NO_MIC)) {
1447                 if (snd_ac97_try_volume_mix(ac97, AC97_MIC)) {
1448                         if ((err = snd_ac97_cmix_new(card, "Mic Playback",
1449                                                      AC97_MIC, 1, ac97)) < 0)
1450                                 return err;
1451                         if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_mic_boost, ac97))) < 0)
1452                                 return err;
1453                 }
1454         }
1455 
1456         /* build Line controls */
1457         if (snd_ac97_try_volume_mix(ac97, AC97_LINE)) {
1458                 if ((err = snd_ac97_cmix_new(card, "Line Playback",
1459                                              AC97_LINE, 1, ac97)) < 0)
1460                         return err;
1461         }
1462         
1463         /* build CD controls */
1464         if (!(ac97->flags & AC97_HAS_NO_CD)) {
1465                 if (snd_ac97_try_volume_mix(ac97, AC97_CD)) {
1466                         if ((err = snd_ac97_cmix_new(card, "CD Playback",
1467                                                      AC97_CD, 1, ac97)) < 0)
1468                                 return err;
1469                 }
1470         }
1471         
1472         /* build Video controls */
1473         if (!(ac97->flags & AC97_HAS_NO_VIDEO)) {
1474                 if (snd_ac97_try_volume_mix(ac97, AC97_VIDEO)) {
1475                         if ((err = snd_ac97_cmix_new(card, "Video Playback",
1476                                                      AC97_VIDEO, 1, ac97)) < 0)
1477                                 return err;
1478                 }
1479         }
1480 
1481         /* build Aux controls */
1482         if (!(ac97->flags & AC97_HAS_NO_AUX)) {
1483                 if (snd_ac97_try_volume_mix(ac97, AC97_AUX)) {
1484                         if ((err = snd_ac97_cmix_new(card, "Aux Playback",
1485                                                      AC97_AUX, 1, ac97)) < 0)
1486                                 return err;
1487                 }
1488         }
1489 
1490         /* build PCM controls */
1491         if (ac97->flags & AC97_AD_MULTI) {
1492                 unsigned short init_val;
1493                 if (ac97->flags & AC97_STEREO_MUTES)
1494                         init_val = 0x9f9f;
1495                 else
1496                         init_val = 0x9f1f;
1497                 for (idx = 0; idx < 2; idx++)
1498                         if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_pcm[idx], ac97))) < 0)
1499                                 return err;
1500                 set_tlv_db_scale(kctl, db_scale_5bit);
1501                 ac97->spec.ad18xx.pcmreg[0] = init_val;
1502                 if (ac97->scaps & AC97_SCAP_SURROUND_DAC) {
1503                         for (idx = 0; idx < 2; idx++)
1504                                 if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_surround[idx], ac97))) < 0)
1505                                         return err;
1506                         set_tlv_db_scale(kctl, db_scale_5bit);
1507                         ac97->spec.ad18xx.pcmreg[1] = init_val;
1508                 }
1509                 if (ac97->scaps & AC97_SCAP_CENTER_LFE_DAC) {
1510                         for (idx = 0; idx < 2; idx++)
1511                                 if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_center[idx], ac97))) < 0)
1512                                         return err;
1513                         set_tlv_db_scale(kctl, db_scale_5bit);
1514                         for (idx = 0; idx < 2; idx++)
1515                                 if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_ad18xx_lfe[idx], ac97))) < 0)
1516                                         return err;
1517                         set_tlv_db_scale(kctl, db_scale_5bit);
1518                         ac97->spec.ad18xx.pcmreg[2] = init_val;
1519                 }
1520                 snd_ac97_write_cache(ac97, AC97_PCM, init_val);
1521         } else {
1522                 if (!(ac97->flags & AC97_HAS_NO_STD_PCM)) {
1523                         if (ac97->flags & AC97_HAS_NO_PCM_VOL)
1524                                 err = snd_ac97_cmute_new(card,
1525                                                          "PCM Playback Switch",
1526                                                          AC97_PCM, 0, ac97);
1527                         else
1528                                 err = snd_ac97_cmix_new(card, "PCM Playback",
1529                                                         AC97_PCM, 0, ac97);
1530                         if (err < 0)
1531                                 return err;
1532                 }
1533         }
1534 
1535         /* build Capture controls */
1536         if (!(ac97->flags & AC97_HAS_NO_REC_GAIN)) {
1537                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_control_capture_src, ac97))) < 0)
1538                         return err;
1539                 if (snd_ac97_try_bit(ac97, AC97_REC_GAIN, 15)) {
1540                         err = snd_ac97_cmute_new(card, "Capture Switch",
1541                                                  AC97_REC_GAIN, 0, ac97);
1542                         if (err < 0)
1543                                 return err;
1544                 }
1545                 if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_control_capture_vol, ac97))) < 0)
1546                         return err;
1547                 set_tlv_db_scale(kctl, db_scale_rec_gain);
1548                 snd_ac97_write_cache(ac97, AC97_REC_SEL, 0x0000);
1549                 snd_ac97_write_cache(ac97, AC97_REC_GAIN, 0x0000);
1550         }
1551         /* build MIC Capture controls */
1552         if (snd_ac97_try_volume_mix(ac97, AC97_REC_GAIN_MIC)) {
1553                 for (idx = 0; idx < 2; idx++)
1554                         if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_mic_capture[idx], ac97))) < 0)
1555                                 return err;
1556                 set_tlv_db_scale(kctl, db_scale_rec_gain);
1557                 snd_ac97_write_cache(ac97, AC97_REC_GAIN_MIC, 0x0000);
1558         }
1559 
1560         /* build PCM out path & mute control */
1561         if (snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 15)) {
1562                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_PCM_OUT], ac97))) < 0)
1563                         return err;
1564         }
1565 
1566         /* build Simulated Stereo Enhancement control */
1567         if (ac97->caps & AC97_BC_SIM_STEREO) {
1568                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_STEREO_ENHANCEMENT], ac97))) < 0)
1569                         return err;
1570         }
1571 
1572         /* build 3D Stereo Enhancement control */
1573         if (snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 13)) {
1574                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_3D], ac97))) < 0)
1575                         return err;
1576         }
1577 
1578         /* build Loudness control */
1579         if (ac97->caps & AC97_BC_LOUDNESS) {
1580                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_LOUDNESS], ac97))) < 0)
1581                         return err;
1582         }
1583 
1584         /* build Mono output select control */
1585         if (snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 9)) {
1586                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_MONO], ac97))) < 0)
1587                         return err;
1588         }
1589 
1590         /* build Mic select control */
1591         if (snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 8)) {
1592                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_MIC], ac97))) < 0)
1593                         return err;
1594         }
1595 
1596         /* build ADC/DAC loopback control */
1597         if (enable_loopback && snd_ac97_try_bit(ac97, AC97_GENERAL_PURPOSE, 7)) {
1598                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_general[AC97_GENERAL_LOOPBACK], ac97))) < 0)
1599                         return err;
1600         }
1601 
1602         snd_ac97_update_bits(ac97, AC97_GENERAL_PURPOSE, ~AC97_GP_DRSS_MASK, 0x0000);
1603 
1604         /* build 3D controls */
1605         if (ac97->build_ops->build_3d) {
1606                 ac97->build_ops->build_3d(ac97);
1607         } else {
1608                 if (snd_ac97_try_volume_mix(ac97, AC97_3D_CONTROL)) {
1609                         unsigned short val;
1610                         val = 0x0707;
1611                         snd_ac97_write(ac97, AC97_3D_CONTROL, val);
1612                         val = snd_ac97_read(ac97, AC97_3D_CONTROL);
1613                         val = val == 0x0606;
1614                         if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_3d[0], ac97))) < 0)
1615                                 return err;
1616                         if (val)
1617                                 kctl->private_value = AC97_3D_CONTROL | (9 << 8) | (7 << 16);
1618                         if ((err = snd_ctl_add(card, kctl = snd_ac97_cnew(&snd_ac97_controls_3d[1], ac97))) < 0)
1619                                 return err;
1620                         if (val)
1621                                 kctl->private_value = AC97_3D_CONTROL | (1 << 8) | (7 << 16);
1622                         snd_ac97_write_cache(ac97, AC97_3D_CONTROL, 0x0000);
1623                 }
1624         }
1625 
1626         /* build S/PDIF controls */
1627 
1628         /* Hack for ASUS P5P800-VM, which does not indicate S/PDIF capability */
1629         if (ac97->subsystem_vendor == 0x1043 &&
1630             ac97->subsystem_device == 0x810f)
1631                 ac97->ext_id |= AC97_EI_SPDIF;
1632 
1633         if ((ac97->ext_id & AC97_EI_SPDIF) && !(ac97->scaps & AC97_SCAP_NO_SPDIF)) {
1634                 if (ac97->build_ops->build_spdif) {
1635                         if ((err = ac97->build_ops->build_spdif(ac97)) < 0)
1636                                 return err;
1637                 } else {
1638                         for (idx = 0; idx < 5; idx++)
1639                                 if ((err = snd_ctl_add(card, snd_ac97_cnew(&snd_ac97_controls_spdif[idx], ac97))) < 0)
1640                                         return err;
1641                         if (ac97->build_ops->build_post_spdif) {
1642                                 if ((err = ac97->build_ops->build_post_spdif(ac97)) < 0)
1643                                         return err;
1644                         }
1645                         /* set default PCM S/PDIF params */
1646                         /* consumer,PCM audio,no copyright,no preemphasis,PCM coder,original,48000Hz */
1647                         snd_ac97_write_cache(ac97, AC97_SPDIF, 0x2a20);
1648                         ac97->rates[AC97_RATES_SPDIF] = snd_ac97_determine_spdif_rates(ac97);
1649                 }
1650                 ac97->spdif_status = SNDRV_PCM_DEFAULT_CON_SPDIF;
1651         }
1652         
1653         /* build chip specific controls */
1654         if (ac97->build_ops->build_specific)
1655                 if ((err = ac97->build_ops->build_specific(ac97)) < 0)
1656                         return err;
1657 
1658         if (snd_ac97_try_bit(ac97, AC97_POWERDOWN, 15)) {
1659                 kctl = snd_ac97_cnew(&snd_ac97_control_eapd, ac97);
1660                 if (! kctl)
1661                         return -ENOMEM;
1662                 if (ac97->scaps & AC97_SCAP_INV_EAPD)
1663                         set_inv_eapd(ac97, kctl);
1664                 if ((err = snd_ctl_add(card, kctl)) < 0)
1665                         return err;
1666         }
1667 
1668         return 0;
1669 }
1670 
1671 static int snd_ac97_modem_build(struct snd_card *card, struct snd_ac97 * ac97)
1672 {
1673         int err, idx;
1674 
1675         /*
1676         printk(KERN_DEBUG "AC97_GPIO_CFG = %x\n",
1677                snd_ac97_read(ac97,AC97_GPIO_CFG));
1678         */
1679         snd_ac97_write(ac97, AC97_GPIO_CFG, 0xffff & ~(AC97_GPIO_LINE1_OH));
1680         snd_ac97_write(ac97, AC97_GPIO_POLARITY, 0xffff & ~(AC97_GPIO_LINE1_OH));
1681         snd_ac97_write(ac97, AC97_GPIO_STICKY, 0xffff);
1682         snd_ac97_write(ac97, AC97_GPIO_WAKEUP, 0x0);
1683         snd_ac97_write(ac97, AC97_MISC_AFE, 0x0);
1684 
1685         /* build modem switches */
1686         for (idx = 0; idx < ARRAY_SIZE(snd_ac97_controls_modem_switches); idx++)
1687                 if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_ac97_controls_modem_switches[idx], ac97))) < 0)
1688                         return err;
1689 
1690         /* build chip specific controls */
1691         if (ac97->build_ops->build_specific)
1692                 if ((err = ac97->build_ops->build_specific(ac97)) < 0)
1693                         return err;
1694 
1695         return 0;
1696 }
1697 
1698 static int snd_ac97_test_rate(struct snd_ac97 *ac97, int reg, int shadow_reg, int rate)
1699 {
1700         unsigned short val;
1701         unsigned int tmp;
1702 
1703         tmp = ((unsigned int)rate * ac97->bus->clock) / 48000;
1704         snd_ac97_write_cache(ac97, reg, tmp & 0xffff);
1705         if (shadow_reg)
1706                 snd_ac97_write_cache(ac97, shadow_reg, tmp & 0xffff);
1707         val = snd_ac97_read(ac97, reg);
1708         return val == (tmp & 0xffff);
1709 }
1710 
1711 static void snd_ac97_determine_rates(struct snd_ac97 *ac97, int reg, int shadow_reg, unsigned int *r_result)
1712 {
1713         unsigned int result = 0;
1714         unsigned short saved;
1715 
1716         if (ac97->bus->no_vra) {
1717                 *r_result = SNDRV_PCM_RATE_48000;
1718                 if ((ac97->flags & AC97_DOUBLE_RATE) &&
1719                     reg == AC97_PCM_FRONT_DAC_RATE)
1720                         *r_result |= SNDRV_PCM_RATE_96000;
1721                 return;
1722         }
1723 
1724         saved = snd_ac97_read(ac97, reg);
1725         if ((ac97->ext_id & AC97_EI_DRA) && reg == AC97_PCM_FRONT_DAC_RATE)
1726                 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
1727                                      AC97_EA_DRA, 0);
1728         /* test a non-standard rate */
1729         if (snd_ac97_test_rate(ac97, reg, shadow_reg, 11000))
1730                 result |= SNDRV_PCM_RATE_CONTINUOUS;
1731         /* let's try to obtain standard rates */
1732         if (snd_ac97_test_rate(ac97, reg, shadow_reg, 8000))
1733                 result |= SNDRV_PCM_RATE_8000;
1734         if (snd_ac97_test_rate(ac97, reg, shadow_reg, 11025))
1735                 result |= SNDRV_PCM_RATE_11025;
1736         if (snd_ac97_test_rate(ac97, reg, shadow_reg, 16000))
1737                 result |= SNDRV_PCM_RATE_16000;
1738         if (snd_ac97_test_rate(ac97, reg, shadow_reg, 22050))
1739                 result |= SNDRV_PCM_RATE_22050;
1740         if (snd_ac97_test_rate(ac97, reg, shadow_reg, 32000))
1741                 result |= SNDRV_PCM_RATE_32000;
1742         if (snd_ac97_test_rate(ac97, reg, shadow_reg, 44100))
1743                 result |= SNDRV_PCM_RATE_44100;
1744         if (snd_ac97_test_rate(ac97, reg, shadow_reg, 48000))
1745                 result |= SNDRV_PCM_RATE_48000;
1746         if ((ac97->flags & AC97_DOUBLE_RATE) &&
1747             reg == AC97_PCM_FRONT_DAC_RATE) {
1748                 /* test standard double rates */
1749                 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
1750                                      AC97_EA_DRA, AC97_EA_DRA);
1751                 if (snd_ac97_test_rate(ac97, reg, shadow_reg, 64000 / 2))
1752                         result |= SNDRV_PCM_RATE_64000;
1753                 if (snd_ac97_test_rate(ac97, reg, shadow_reg, 88200 / 2))
1754                         result |= SNDRV_PCM_RATE_88200;
1755                 if (snd_ac97_test_rate(ac97, reg, shadow_reg, 96000 / 2))
1756                         result |= SNDRV_PCM_RATE_96000;
1757                 /* some codecs don't support variable double rates */
1758                 if (!snd_ac97_test_rate(ac97, reg, shadow_reg, 76100 / 2))
1759                         result &= ~SNDRV_PCM_RATE_CONTINUOUS;
1760                 snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS,
1761                                      AC97_EA_DRA, 0);
1762         }
1763         /* restore the default value */
1764         snd_ac97_write_cache(ac97, reg, saved);
1765         if (shadow_reg)
1766                 snd_ac97_write_cache(ac97, shadow_reg, saved);
1767         *r_result = result;
1768 }
1769 
1770 /* check AC97_SPDIF register to accept which sample rates */
1771 static unsigned int snd_ac97_determine_spdif_rates(struct snd_ac97 *ac97)
1772 {
1773         unsigned int result = 0;
1774         int i;
1775         static unsigned short ctl_bits[] = {
1776                 AC97_SC_SPSR_44K, AC97_SC_SPSR_32K, AC97_SC_SPSR_48K
1777         };
1778         static unsigned int rate_bits[] = {
1779                 SNDRV_PCM_RATE_44100, SNDRV_PCM_RATE_32000, SNDRV_PCM_RATE_48000
1780         };
1781 
1782         for (i = 0; i < (int)ARRAY_SIZE(ctl_bits); i++) {
1783                 snd_ac97_update_bits(ac97, AC97_SPDIF, AC97_SC_SPSR_MASK, ctl_bits[i]);
1784                 if ((snd_ac97_read(ac97, AC97_SPDIF) & AC97_SC_SPSR_MASK) == ctl_bits[i])
1785                         result |= rate_bits[i];
1786         }
1787         return result;
1788 }
1789 
1790 /* look for the codec id table matching with the given id */
1791 static const struct ac97_codec_id *look_for_codec_id(const struct ac97_codec_id *table,
1792                                                      unsigned int id)
1793 {
1794         const struct ac97_codec_id *pid;
1795 
1796         for (pid = table; pid->id; pid++)
1797                 if (pid->id == (id & pid->mask))
1798                         return pid;
1799         return NULL;
1800 }
1801 
1802 void snd_ac97_get_name(struct snd_ac97 *ac97, unsigned int id, char *name, int modem)
1803 {
1804         const struct ac97_codec_id *pid;
1805 
1806         sprintf(name, "0x%x %c%c%c", id,
1807                 printable(id >> 24),
1808                 printable(id >> 16),
1809                 printable(id >> 8));
1810         pid = look_for_codec_id(snd_ac97_codec_id_vendors, id);
1811         if (! pid)
1812                 return;
1813 
1814         strcpy(name, pid->name);
1815         if (ac97 && pid->patch) {
1816                 if ((modem && (pid->flags & AC97_MODEM_PATCH)) ||
1817                     (! modem && ! (pid->flags & AC97_MODEM_PATCH)))
1818                         pid->patch(ac97);
1819         } 
1820 
1821         pid = look_for_codec_id(snd_ac97_codec_ids, id);
1822         if (pid) {
1823                 strcat(name, " ");
1824                 strcat(name, pid->name);
1825                 if (pid->mask != 0xffffffff)
1826                         sprintf(name + strlen(name), " rev %d", id & ~pid->mask);
1827                 if (ac97 && pid->patch) {
1828                         if ((modem && (pid->flags & AC97_MODEM_PATCH)) ||
1829                             (! modem && ! (pid->flags & AC97_MODEM_PATCH)))
1830                                 pid->patch(ac97);
1831                 }
1832         } else
1833                 sprintf(name + strlen(name), " id %x", id & 0xff);
1834 }
1835 
1836 /**
1837  * snd_ac97_get_short_name - retrieve codec name
1838  * @ac97: the codec instance
1839  *
1840  * Return: The short identifying name of the codec.
1841  */
1842 const char *snd_ac97_get_short_name(struct snd_ac97 *ac97)
1843 {
1844         const struct ac97_codec_id *pid;
1845 
1846         for (pid = snd_ac97_codec_ids; pid->id; pid++)
1847                 if (pid->id == (ac97->id & pid->mask))
1848                         return pid->name;
1849         return "unknown codec";
1850 }
1851 
1852 EXPORT_SYMBOL(snd_ac97_get_short_name);
1853 
1854 /* wait for a while until registers are accessible after RESET
1855  * return 0 if ok, negative not ready
1856  */
1857 static int ac97_reset_wait(struct snd_ac97 *ac97, int timeout, int with_modem)
1858 {
1859         unsigned long end_time;
1860         unsigned short val;
1861 
1862         end_time = jiffies + timeout;
1863         do {
1864                 
1865                 /* use preliminary reads to settle the communication */
1866                 snd_ac97_read(ac97, AC97_RESET);
1867                 snd_ac97_read(ac97, AC97_VENDOR_ID1);
1868                 snd_ac97_read(ac97, AC97_VENDOR_ID2);
1869                 /* modem? */
1870                 if (with_modem) {
1871                         val = snd_ac97_read(ac97, AC97_EXTENDED_MID);
1872                         if (val != 0xffff && (val & 1) != 0)
1873                                 return 0;
1874                 }
1875                 if (ac97->scaps & AC97_SCAP_DETECT_BY_VENDOR) {
1876                         /* probably only Xbox issue - all registers are read as zero */
1877                         val = snd_ac97_read(ac97, AC97_VENDOR_ID1);
1878                         if (val != 0 && val != 0xffff)
1879                                 return 0;
1880                 } else {
1881                         /* because the PCM or MASTER volume registers can be modified,
1882                          * the REC_GAIN register is used for tests
1883                          */
1884                         /* test if we can write to the record gain volume register */
1885                         snd_ac97_write_cache(ac97, AC97_REC_GAIN, 0x8a05);
1886                         if ((snd_ac97_read(ac97, AC97_REC_GAIN) & 0x7fff) == 0x0a05)
1887                                 return 0;
1888                 }
1889                 schedule_timeout_uninterruptible(1);
1890         } while (time_after_eq(end_time, jiffies));
1891         return -ENODEV;
1892 }
1893 
1894 /**
1895  * snd_ac97_bus - create an AC97 bus component
1896  * @card: the card instance
1897  * @num: the bus number
1898  * @ops: the bus callbacks table
1899  * @private_data: private data pointer for the new instance
1900  * @rbus: the pointer to store the new AC97 bus instance.
1901  *
1902  * Creates an AC97 bus component.  An struct snd_ac97_bus instance is newly
1903  * allocated and initialized.
1904  *
1905  * The ops table must include valid callbacks (at least read and
1906  * write).  The other callbacks, wait and reset, are not mandatory.
1907  * 
1908  * The clock is set to 48000.  If another clock is needed, set
1909  * (*rbus)->clock manually.
1910  *
1911  * The AC97 bus instance is registered as a low-level device, so you don't
1912  * have to release it manually.
1913  *
1914  * Return: Zero if successful, or a negative error code on failure.
1915  */
1916 int snd_ac97_bus(struct snd_card *card, int num, struct snd_ac97_bus_ops *ops,
1917                  void *private_data, struct snd_ac97_bus **rbus)
1918 {
1919         int err;
1920         struct snd_ac97_bus *bus;
1921         static struct snd_device_ops dev_ops = {
1922                 .dev_free =     snd_ac97_bus_dev_free,
1923         };
1924 
1925         if (snd_BUG_ON(!card))
1926                 return -EINVAL;
1927         bus = kzalloc(sizeof(*bus), GFP_KERNEL);
1928         if (bus == NULL)
1929                 return -ENOMEM;
1930         bus->card = card;
1931         bus->num = num;
1932         bus->ops = ops;
1933         bus->private_data = private_data;
1934         bus->clock = 48000;
1935         spin_lock_init(&bus->bus_lock);
1936         snd_ac97_bus_proc_init(bus);
1937         if ((err = snd_device_new(card, SNDRV_DEV_BUS, bus, &dev_ops)) < 0) {
1938                 snd_ac97_bus_free(bus);
1939                 return err;
1940         }
1941         if (rbus)
1942                 *rbus = bus;
1943         return 0;
1944 }
1945 
1946 EXPORT_SYMBOL(snd_ac97_bus);
1947 
1948 /* stop no dev release warning */
1949 static void ac97_device_release(struct device * dev)
1950 {
1951 }
1952 
1953 /* register ac97 codec to bus */
1954 static int snd_ac97_dev_register(struct snd_device *device)
1955 {
1956         struct snd_ac97 *ac97 = device->device_data;
1957         int err;
1958 
1959         ac97->dev.bus = &ac97_bus_type;
1960         ac97->dev.parent = ac97->bus->card->dev;
1961         ac97->dev.release = ac97_device_release;
1962         dev_set_name(&ac97->dev, "%d-%d:%s",
1963                      ac97->bus->card->number, ac97->num,
1964                      snd_ac97_get_short_name(ac97));
1965         if ((err = device_register(&ac97->dev)) < 0) {
1966                 snd_printk(KERN_ERR "Can't register ac97 bus\n");
1967                 ac97->dev.bus = NULL;
1968                 return err;
1969         }
1970         return 0;
1971 }
1972 
1973 /* disconnect ac97 codec */
1974 static int snd_ac97_dev_disconnect(struct snd_device *device)
1975 {
1976         struct snd_ac97 *ac97 = device->device_data;
1977         if (ac97->dev.bus)
1978                 device_unregister(&ac97->dev);
1979         return 0;
1980 }
1981 
1982 /* build_ops to do nothing */
1983 static const struct snd_ac97_build_ops null_build_ops;
1984 
1985 #ifdef CONFIG_SND_AC97_POWER_SAVE
1986 static void do_update_power(struct work_struct *work)
1987 {
1988         update_power_regs(
1989                 container_of(work, struct snd_ac97, power_work.work));
1990 }
1991 #endif
1992 
1993 /**
1994  * snd_ac97_mixer - create an Codec97 component
1995  * @bus: the AC97 bus which codec is attached to
1996  * @template: the template of ac97, including index, callbacks and
1997  *         the private data.
1998  * @rac97: the pointer to store the new ac97 instance.
1999  *
2000  * Creates an Codec97 component.  An struct snd_ac97 instance is newly
2001  * allocated and initialized from the template.  The codec
2002  * is then initialized by the standard procedure.
2003  *
2004  * The template must include the codec number (num) and address (addr),
2005  * and the private data (private_data).
2006  * 
2007  * The ac97 instance is registered as a low-level device, so you don't
2008  * have to release it manually.
2009  *
2010  * Return: Zero if successful, or a negative error code on failure.
2011  */
2012 int snd_ac97_mixer(struct snd_ac97_bus *bus, struct snd_ac97_template *template, struct snd_ac97 **rac97)
2013 {
2014         int err;
2015         struct snd_ac97 *ac97;
2016         struct snd_card *card;
2017         char name[64];
2018         unsigned long end_time;
2019         unsigned int reg;
2020         const struct ac97_codec_id *pid;
2021         static struct snd_device_ops ops = {
2022                 .dev_free =     snd_ac97_dev_free,
2023                 .dev_register = snd_ac97_dev_register,
2024                 .dev_disconnect =       snd_ac97_dev_disconnect,
2025         };
2026 
2027         if (rac97)
2028                 *rac97 = NULL;
2029         if (snd_BUG_ON(!bus || !template))
2030                 return -EINVAL;
2031         if (snd_BUG_ON(template->num >= 4))
2032                 return -EINVAL;
2033         if (bus->codec[template->num])
2034                 return -EBUSY;
2035 
2036         card = bus->card;
2037         ac97 = kzalloc(sizeof(*ac97), GFP_KERNEL);
2038         if (ac97 == NULL)
2039                 return -ENOMEM;
2040         ac97->private_data = template->private_data;
2041         ac97->private_free = template->private_free;
2042         ac97->bus = bus;
2043         ac97->pci = template->pci;
2044         ac97->num = template->num;
2045         ac97->addr = template->addr;
2046         ac97->scaps = template->scaps;
2047         ac97->res_table = template->res_table;
2048         bus->codec[ac97->num] = ac97;
2049         mutex_init(&ac97->reg_mutex);
2050         mutex_init(&ac97->page_mutex);
2051 #ifdef CONFIG_SND_AC97_POWER_SAVE
2052         INIT_DELAYED_WORK(&ac97->power_work, do_update_power);
2053 #endif
2054 
2055 #ifdef CONFIG_PCI
2056         if (ac97->pci) {
2057                 pci_read_config_word(ac97->pci, PCI_SUBSYSTEM_VENDOR_ID, &ac97->subsystem_vendor);
2058                 pci_read_config_word(ac97->pci, PCI_SUBSYSTEM_ID, &ac97->subsystem_device);
2059         }
2060 #endif
2061         if (bus->ops->reset) {
2062                 bus->ops->reset(ac97);
2063                 goto __access_ok;
2064         }
2065 
2066         ac97->id = snd_ac97_read(ac97, AC97_VENDOR_ID1) << 16;
2067         ac97->id |= snd_ac97_read(ac97, AC97_VENDOR_ID2);
2068         if (ac97->id && ac97->id != (unsigned int)-1) {
2069                 pid = look_for_codec_id(snd_ac97_codec_ids, ac97->id);
2070                 if (pid && (pid->flags & AC97_DEFAULT_POWER_OFF))
2071                         goto __access_ok;
2072         }
2073 
2074         /* reset to defaults */
2075         if (!(ac97->scaps & AC97_SCAP_SKIP_AUDIO))
2076                 snd_ac97_write(ac97, AC97_RESET, 0);
2077         if (!(ac97->scaps & AC97_SCAP_SKIP_MODEM))
2078                 snd_ac97_write(ac97, AC97_EXTENDED_MID, 0);
2079         if (bus->ops->wait)
2080                 bus->ops->wait(ac97);
2081         else {
2082                 udelay(50);
2083                 if (ac97->scaps & AC97_SCAP_SKIP_AUDIO)
2084                         err = ac97_reset_wait(ac97, msecs_to_jiffies(500), 1);
2085                 else {
2086                         err = ac97_reset_wait(ac97, msecs_to_jiffies(500), 0);
2087                         if (err < 0)
2088                                 err = ac97_reset_wait(ac97,
2089                                                       msecs_to_jiffies(500), 1);
2090                 }
2091                 if (err < 0) {
2092                         snd_printk(KERN_WARNING "AC'97 %d does not respond - RESET\n", ac97->num);
2093                         /* proceed anyway - it's often non-critical */
2094                 }
2095         }
2096       __access_ok:
2097         ac97->id = snd_ac97_read(ac97, AC97_VENDOR_ID1) << 16;
2098         ac97->id |= snd_ac97_read(ac97, AC97_VENDOR_ID2);
2099         if (! (ac97->scaps & AC97_SCAP_DETECT_BY_VENDOR) &&
2100             (ac97->id == 0x00000000 || ac97->id == 0xffffffff)) {
2101                 snd_printk(KERN_ERR "AC'97 %d access is not valid [0x%x], removing mixer.\n", ac97->num, ac97->id);
2102                 snd_ac97_free(ac97);
2103                 return -EIO;
2104         }
2105         pid = look_for_codec_id(snd_ac97_codec_ids, ac97->id);
2106         if (pid)
2107                 ac97->flags |= pid->flags;
2108         
2109         /* test for AC'97 */
2110         if (!(ac97->scaps & AC97_SCAP_SKIP_AUDIO) && !(ac97->scaps & AC97_SCAP_AUDIO)) {
2111                 /* test if we can write to the record gain volume register */
2112                 snd_ac97_write_cache(ac97, AC97_REC_GAIN, 0x8a06);
2113                 if (((err = snd_ac97_read(ac97, AC97_REC_GAIN)) & 0x7fff) == 0x0a06)
2114                         ac97->scaps |= AC97_SCAP_AUDIO;
2115         }
2116         if (ac97->scaps & AC97_SCAP_AUDIO) {
2117                 ac97->caps = snd_ac97_read(ac97, AC97_RESET);
2118                 ac97->ext_id = snd_ac97_read(ac97, AC97_EXTENDED_ID);
2119                 if (ac97->ext_id == 0xffff)     /* invalid combination */
2120                         ac97->ext_id = 0;
2121         }
2122 
2123         /* test for MC'97 */
2124         if (!(ac97->scaps & AC97_SCAP_SKIP_MODEM) && !(ac97->scaps & AC97_SCAP_MODEM)) {
2125                 ac97->ext_mid = snd_ac97_read(ac97, AC97_EXTENDED_MID);
2126                 if (ac97->ext_mid == 0xffff)    /* invalid combination */
2127                         ac97->ext_mid = 0;
2128                 if (ac97->ext_mid & 1)
2129                         ac97->scaps |= AC97_SCAP_MODEM;
2130         }
2131 
2132         if (!ac97_is_audio(ac97) && !ac97_is_modem(ac97)) {
2133                 if (!(ac97->scaps & (AC97_SCAP_SKIP_AUDIO|AC97_SCAP_SKIP_MODEM)))
2134                         snd_printk(KERN_ERR "AC'97 %d access error (not audio or modem codec)\n", ac97->num);
2135                 snd_ac97_free(ac97);
2136                 return -EACCES;
2137         }
2138 
2139         if (bus->ops->reset) // FIXME: always skipping?
2140                 goto __ready_ok;
2141 
2142         /* FIXME: add powerdown control */
2143         if (ac97_is_audio(ac97)) {
2144                 /* nothing should be in powerdown mode */
2145                 snd_ac97_write_cache(ac97, AC97_POWERDOWN, 0);
2146                 if (! (ac97->flags & AC97_DEFAULT_POWER_OFF)) {
2147                         snd_ac97_write_cache(ac97, AC97_RESET, 0); /* reset to defaults */
2148                         udelay(100);
2149                         snd_ac97_write_cache(ac97, AC97_POWERDOWN, 0);
2150                 }
2151                 /* nothing should be in powerdown mode */
2152                 snd_ac97_write_cache(ac97, AC97_GENERAL_PURPOSE, 0);
2153                 end_time = jiffies + msecs_to_jiffies(5000);
2154                 do {
2155                         if ((snd_ac97_read(ac97, AC97_POWERDOWN) & 0x0f) == 0x0f)
2156                                 goto __ready_ok;
2157                         schedule_timeout_uninterruptible(1);
2158                 } while (time_after_eq(end_time, jiffies));
2159                 snd_printk(KERN_WARNING "AC'97 %d analog subsections not ready\n", ac97->num);
2160         }
2161 
2162         /* FIXME: add powerdown control */
2163         if (ac97_is_modem(ac97)) {
2164                 unsigned char tmp;
2165 
2166                 /* nothing should be in powerdown mode */
2167                 /* note: it's important to set the rate at first */
2168                 tmp = AC97_MEA_GPIO;
2169                 if (ac97->ext_mid & AC97_MEI_LINE1) {
2170                         snd_ac97_write_cache(ac97, AC97_LINE1_RATE, 8000);
2171                         tmp |= AC97_MEA_ADC1 | AC97_MEA_DAC1;
2172                 }
2173                 if (ac97->ext_mid & AC97_MEI_LINE2) {
2174                         snd_ac97_write_cache(ac97, AC97_LINE2_RATE, 8000);
2175                         tmp |= AC97_MEA_ADC2 | AC97_MEA_DAC2;
2176                 }
2177                 if (ac97->ext_mid & AC97_MEI_HANDSET) {
2178                         snd_ac97_write_cache(ac97, AC97_HANDSET_RATE, 8000);
2179                         tmp |= AC97_MEA_HADC | AC97_MEA_HDAC;
2180                 }
2181                 snd_ac97_write_cache(ac97, AC97_EXTENDED_MSTATUS, 0);
2182                 udelay(100);
2183                 /* nothing should be in powerdown mode */
2184                 snd_ac97_write_cache(ac97, AC97_EXTENDED_MSTATUS, 0);
2185                 end_time = jiffies + msecs_to_jiffies(100);
2186                 do {
2187                         if ((snd_ac97_read(ac97, AC97_EXTENDED_MSTATUS) & tmp) == tmp)
2188                                 goto __ready_ok;
2189                         schedule_timeout_uninterruptible(1);
2190                 } while (time_after_eq(end_time, jiffies));
2191                 snd_printk(KERN_WARNING "MC'97 %d converters and GPIO not ready (0x%x)\n", ac97->num, snd_ac97_read(ac97, AC97_EXTENDED_MSTATUS));
2192         }
2193         
2194       __ready_ok:
2195         if (ac97_is_audio(ac97))
2196                 ac97->addr = (ac97->ext_id & AC97_EI_ADDR_MASK) >> AC97_EI_ADDR_SHIFT;
2197         else
2198                 ac97->addr = (ac97->ext_mid & AC97_MEI_ADDR_MASK) >> AC97_MEI_ADDR_SHIFT;
2199         if (ac97->ext_id & 0x01c9) {    /* L/R, MIC, SDAC, LDAC VRA support */
2200                 reg = snd_ac97_read(ac97, AC97_EXTENDED_STATUS);
2201                 reg |= ac97->ext_id & 0x01c0; /* LDAC/SDAC/CDAC */
2202                 if (! bus->no_vra)
2203                         reg |= ac97->ext_id & 0x0009; /* VRA/VRM */
2204                 snd_ac97_write_cache(ac97, AC97_EXTENDED_STATUS, reg);
2205         }
2206         if ((ac97->ext_id & AC97_EI_DRA) && bus->dra) {
2207                 /* Intel controllers require double rate data to be put in
2208                  * slots 7+8, so let's hope the codec supports it. */
2209                 snd_ac97_update_bits(ac97, AC97_GENERAL_PURPOSE, AC97_GP_DRSS_MASK, AC97_GP_DRSS_78);
2210                 if ((snd_ac97_read(ac97, AC97_GENERAL_PURPOSE) & AC97_GP_DRSS_MASK) == AC97_GP_DRSS_78)
2211                         ac97->flags |= AC97_DOUBLE_RATE;
2212                 /* restore to slots 10/11 to avoid the confliction with surrounds */
2213                 snd_ac97_update_bits(ac97, AC97_GENERAL_PURPOSE, AC97_GP_DRSS_MASK, 0);
2214         }
2215         if (ac97->ext_id & AC97_EI_VRA) {       /* VRA support */
2216                 snd_ac97_determine_rates(ac97, AC97_PCM_FRONT_DAC_RATE, 0, &ac97->rates[AC97_RATES_FRONT_DAC]);
2217                 snd_ac97_determine_rates(ac97, AC97_PCM_LR_ADC_RATE, 0, &ac97->rates[AC97_RATES_ADC]);
2218         } else {
2219                 ac97->rates[AC97_RATES_FRONT_DAC] = SNDRV_PCM_RATE_48000;
2220                 if (ac97->flags & AC97_DOUBLE_RATE)
2221                         ac97->rates[AC97_RATES_FRONT_DAC] |= SNDRV_PCM_RATE_96000;
2222                 ac97->rates[AC97_RATES_ADC] = SNDRV_PCM_RATE_48000;
2223         }
2224         if (ac97->ext_id & AC97_EI_SPDIF) {
2225                 /* codec specific code (patch) should override these values */
2226                 ac97->rates[AC97_RATES_SPDIF] = SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_32000;
2227         }
2228         if (ac97->ext_id & AC97_EI_VRM) {       /* MIC VRA support */
2229                 snd_ac97_determine_rates(ac97, AC97_PCM_MIC_ADC_RATE, 0, &ac97->rates[AC97_RATES_MIC_ADC]);
2230         } else {
2231                 ac97->rates[AC97_RATES_MIC_ADC] = SNDRV_PCM_RATE_48000;
2232         }
2233         if (ac97->ext_id & AC97_EI_SDAC) {      /* SDAC support */
2234                 snd_ac97_determine_rates(ac97, AC97_PCM_SURR_DAC_RATE, AC97_PCM_FRONT_DAC_RATE, &ac97->rates[AC97_RATES_SURR_DAC]);
2235                 ac97->scaps |= AC97_SCAP_SURROUND_DAC;
2236         }
2237         if (ac97->ext_id & AC97_EI_LDAC) {      /* LDAC support */
2238                 snd_ac97_determine_rates(ac97, AC97_PCM_LFE_DAC_RATE, AC97_PCM_FRONT_DAC_RATE, &ac97->rates[AC97_RATES_LFE_DAC]);
2239                 ac97->scaps |= AC97_SCAP_CENTER_LFE_DAC;
2240         }
2241         /* additional initializations */
2242         if (bus->ops->init)
2243                 bus->ops->init(ac97);
2244         snd_ac97_get_name(ac97, ac97->id, name, !ac97_is_audio(ac97));
2245         snd_ac97_get_name(NULL, ac97->id, name, !ac97_is_audio(ac97));  // ac97->id might be changed in the special setup code
2246         if (! ac97->build_ops)
2247                 ac97->build_ops = &null_build_ops;
2248 
2249         if (ac97_is_audio(ac97)) {
2250                 char comp[16];
2251                 if (card->mixername[0] == '\0') {
2252                         strcpy(card->mixername, name);
2253                 } else {
2254                         if (strlen(card->mixername) + 1 + strlen(name) + 1 <= sizeof(card->mixername)) {
2255                                 strcat(card->mixername, ",");
2256                                 strcat(card->mixername, name);
2257                         }
2258                 }
2259                 sprintf(comp, "AC97a:%08x", ac97->id);
2260                 if ((err = snd_component_add(card, comp)) < 0) {
2261                         snd_ac97_free(ac97);
2262                         return err;
2263                 }
2264                 if (snd_ac97_mixer_build(ac97) < 0) {
2265                         snd_ac97_free(ac97);
2266                         return -ENOMEM;
2267                 }
2268         }
2269         if (ac97_is_modem(ac97)) {
2270                 char comp[16];
2271                 if (card->mixername[0] == '\0') {
2272                         strcpy(card->mixername, name);
2273                 } else {
2274                         if (strlen(card->mixername) + 1 + strlen(name) + 1 <= sizeof(card->mixername)) {
2275                                 strcat(card->mixername, ",");
2276                                 strcat(card->mixername, name);
2277                         }
2278                 }
2279                 sprintf(comp, "AC97m:%08x", ac97->id);
2280                 if ((err = snd_component_add(card, comp)) < 0) {
2281                         snd_ac97_free(ac97);
2282                         return err;
2283                 }
2284                 if (snd_ac97_modem_build(card, ac97) < 0) {
2285                         snd_ac97_free(ac97);
2286                         return -ENOMEM;
2287                 }
2288         }
2289         if (ac97_is_audio(ac97))
2290                 update_power_regs(ac97);
2291         snd_ac97_proc_init(ac97);
2292         if ((err = snd_device_new(card, SNDRV_DEV_CODEC, ac97, &ops)) < 0) {
2293                 snd_ac97_free(ac97);
2294                 return err;
2295         }
2296         *rac97 = ac97;
2297         return 0;
2298 }
2299 
2300 EXPORT_SYMBOL(snd_ac97_mixer);
2301 
2302 /*
2303  * Power down the chip.
2304  *
2305  * MASTER and HEADPHONE registers are muted but the register cache values
2306  * are not changed, so that the values can be restored in snd_ac97_resume().
2307  */
2308 static void snd_ac97_powerdown(struct snd_ac97 *ac97)
2309 {
2310         unsigned short power;
2311 
2312         if (ac97_is_audio(ac97)) {
2313                 /* some codecs have stereo mute bits */
2314                 snd_ac97_write(ac97, AC97_MASTER, 0x9f9f);
2315                 snd_ac97_write(ac97, AC97_HEADPHONE, 0x9f9f);
2316         }
2317 
2318         /* surround, CLFE, mic powerdown */
2319         power = ac97->regs[AC97_EXTENDED_STATUS];
2320         if (ac97->scaps & AC97_SCAP_SURROUND_DAC)
2321                 power |= AC97_EA_PRJ;
2322         if (ac97->scaps & AC97_SCAP_CENTER_LFE_DAC)
2323                 power |= AC97_EA_PRI | AC97_EA_PRK;
2324         power |= AC97_EA_PRL;
2325         snd_ac97_write(ac97, AC97_EXTENDED_STATUS, power);
2326 
2327         /* powerdown external amplifier */
2328         if (ac97->scaps & AC97_SCAP_INV_EAPD)
2329                 power = ac97->regs[AC97_POWERDOWN] & ~AC97_PD_EAPD;
2330         else if (! (ac97->scaps & AC97_SCAP_EAPD_LED))
2331                 power = ac97->regs[AC97_POWERDOWN] | AC97_PD_EAPD;
2332         power |= AC97_PD_PR6;   /* Headphone amplifier powerdown */
2333         power |= AC97_PD_PR0 | AC97_PD_PR1;     /* ADC & DAC powerdown */
2334         snd_ac97_write(ac97, AC97_POWERDOWN, power);
2335         udelay(100);
2336         power |= AC97_PD_PR2;   /* Analog Mixer powerdown (Vref on) */
2337         snd_ac97_write(ac97, AC97_POWERDOWN, power);
2338         if (ac97_is_power_save_mode(ac97)) {
2339                 power |= AC97_PD_PR3;   /* Analog Mixer powerdown */
2340                 snd_ac97_write(ac97, AC97_POWERDOWN, power);
2341                 udelay(100);
2342                 /* AC-link powerdown, internal Clk disable */
2343                 /* FIXME: this may cause click noises on some boards */
2344                 power |= AC97_PD_PR4 | AC97_PD_PR5;
2345                 snd_ac97_write(ac97, AC97_POWERDOWN, power);
2346         }
2347 }
2348 
2349 
2350 struct ac97_power_reg {
2351         unsigned short reg;
2352         unsigned short power_reg;
2353         unsigned short mask;
2354 };
2355 
2356 enum { PWIDX_ADC, PWIDX_FRONT, PWIDX_CLFE, PWIDX_SURR, PWIDX_MIC, PWIDX_SIZE };
2357 
2358 static struct ac97_power_reg power_regs[PWIDX_SIZE] = {
2359         [PWIDX_ADC] = { AC97_PCM_LR_ADC_RATE, AC97_POWERDOWN, AC97_PD_PR0},
2360         [PWIDX_FRONT] = { AC97_PCM_FRONT_DAC_RATE, AC97_POWERDOWN, AC97_PD_PR1},
2361         [PWIDX_CLFE] = { AC97_PCM_LFE_DAC_RATE, AC97_EXTENDED_STATUS,
2362                          AC97_EA_PRI | AC97_EA_PRK},
2363         [PWIDX_SURR] = { AC97_PCM_SURR_DAC_RATE, AC97_EXTENDED_STATUS,
2364                          AC97_EA_PRJ},
2365         [PWIDX_MIC] = { AC97_PCM_MIC_ADC_RATE, AC97_EXTENDED_STATUS,
2366                         AC97_EA_PRL},
2367 };
2368 
2369 #ifdef CONFIG_SND_AC97_POWER_SAVE
2370 /**
2371  * snd_ac97_update_power - update the powerdown register
2372  * @ac97: the codec instance
2373  * @reg: the rate register, e.g. AC97_PCM_FRONT_DAC_RATE
2374  * @powerup: non-zero when power up the part
2375  *
2376  * Update the AC97 powerdown register bits of the given part.
2377  *
2378  * Return: Zero.
2379  */
2380 int snd_ac97_update_power(struct snd_ac97 *ac97, int reg, int powerup)
2381 {
2382         int i;
2383 
2384         if (! ac97)
2385                 return 0;
2386 
2387         if (reg) {
2388                 /* SPDIF requires DAC power, too */
2389                 if (reg == AC97_SPDIF)
2390                         reg = AC97_PCM_FRONT_DAC_RATE;
2391                 for (i = 0; i < PWIDX_SIZE; i++) {
2392                         if (power_regs[i].reg == reg) {
2393                                 if (powerup)
2394                                         ac97->power_up |= (1 << i);
2395                                 else
2396                                         ac97->power_up &= ~(1 << i);
2397                                 break;
2398                         }
2399                 }
2400         }
2401 
2402         if (ac97_is_power_save_mode(ac97) && !powerup)
2403                 /* adjust power-down bits after two seconds delay
2404                  * (for avoiding loud click noises for many (OSS) apps
2405                  *  that open/close frequently)
2406                  */
2407                 schedule_delayed_work(&ac97->power_work,
2408                                       msecs_to_jiffies(power_save * 1000));
2409         else {
2410                 cancel_delayed_work(&ac97->power_work);
2411                 update_power_regs(ac97);
2412         }
2413 
2414         return 0;
2415 }
2416 
2417 EXPORT_SYMBOL(snd_ac97_update_power);
2418 #endif /* CONFIG_SND_AC97_POWER_SAVE */
2419 
2420 static void update_power_regs(struct snd_ac97 *ac97)
2421 {
2422         unsigned int power_up, bits;
2423         int i;
2424 
2425         power_up = (1 << PWIDX_FRONT) | (1 << PWIDX_ADC);
2426         power_up |= (1 << PWIDX_MIC);
2427         if (ac97->scaps & AC97_SCAP_SURROUND_DAC)
2428                 power_up |= (1 << PWIDX_SURR);
2429         if (ac97->scaps & AC97_SCAP_CENTER_LFE_DAC)
2430                 power_up |= (1 << PWIDX_CLFE);
2431 #ifdef CONFIG_SND_AC97_POWER_SAVE
2432         if (ac97_is_power_save_mode(ac97))
2433                 power_up = ac97->power_up;
2434 #endif
2435         if (power_up) {
2436                 if (ac97->regs[AC97_POWERDOWN] & AC97_PD_PR2) {
2437                         /* needs power-up analog mix and vref */
2438                         snd_ac97_update_bits(ac97, AC97_POWERDOWN,
2439                                              AC97_PD_PR3, 0);
2440                         msleep(1);
2441                         snd_ac97_update_bits(ac97, AC97_POWERDOWN,
2442                                              AC97_PD_PR2, 0);
2443                 }
2444         }
2445         for (i = 0; i < PWIDX_SIZE; i++) {
2446                 if (power_up & (1 << i))
2447                         bits = 0;
2448                 else
2449                         bits = power_regs[i].mask;
2450                 snd_ac97_update_bits(ac97, power_regs[i].power_reg,
2451                                      power_regs[i].mask, bits);
2452         }
2453         if (! power_up) {
2454                 if (! (ac97->regs[AC97_POWERDOWN] & AC97_PD_PR2)) {
2455                         /* power down analog mix and vref */
2456                         snd_ac97_update_bits(ac97, AC97_POWERDOWN,
2457                                              AC97_PD_PR2, AC97_PD_PR2);
2458                         snd_ac97_update_bits(ac97, AC97_POWERDOWN,
2459                                              AC97_PD_PR3, AC97_PD_PR3);
2460                 }
2461         }
2462 }
2463 
2464 
2465 #ifdef CONFIG_PM
2466 /**
2467  * snd_ac97_suspend - General suspend function for AC97 codec
2468  * @ac97: the ac97 instance
2469  *
2470  * Suspends the codec, power down the chip.
2471  */
2472 void snd_ac97_suspend(struct snd_ac97 *ac97)
2473 {
2474         if (! ac97)
2475                 return;
2476         if (ac97->build_ops->suspend)
2477                 ac97->build_ops->suspend(ac97);
2478 #ifdef CONFIG_SND_AC97_POWER_SAVE
2479         cancel_delayed_work_sync(&ac97->power_work);
2480 #endif
2481         snd_ac97_powerdown(ac97);
2482 }
2483 
2484 EXPORT_SYMBOL(snd_ac97_suspend);
2485 
2486 /*
2487  * restore ac97 status
2488  */
2489 static void snd_ac97_restore_status(struct snd_ac97 *ac97)
2490 {
2491         int i;
2492 
2493         for (i = 2; i < 0x7c ; i += 2) {
2494                 if (i == AC97_POWERDOWN || i == AC97_EXTENDED_ID)
2495                         continue;
2496                 /* restore only accessible registers
2497                  * some chip (e.g. nm256) may hang up when unsupported registers
2498                  * are accessed..!
2499                  */
2500                 if (test_bit(i, ac97->reg_accessed)) {
2501                         snd_ac97_write(ac97, i, ac97->regs[i]);
2502                         snd_ac97_read(ac97, i);
2503                 }
2504         }
2505 }
2506 
2507 /*
2508  * restore IEC958 status
2509  */
2510 static void snd_ac97_restore_iec958(struct snd_ac97 *ac97)
2511 {
2512         if (ac97->ext_id & AC97_EI_SPDIF) {
2513                 if (ac97->regs[AC97_EXTENDED_STATUS] & AC97_EA_SPDIF) {
2514                         /* reset spdif status */
2515                         snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, 0);
2516                         snd_ac97_write(ac97, AC97_EXTENDED_STATUS, ac97->regs[AC97_EXTENDED_STATUS]);
2517                         if (ac97->flags & AC97_CS_SPDIF)
2518                                 snd_ac97_write(ac97, AC97_CSR_SPDIF, ac97->regs[AC97_CSR_SPDIF]);
2519                         else
2520                                 snd_ac97_write(ac97, AC97_SPDIF, ac97->regs[AC97_SPDIF]);
2521                         snd_ac97_update_bits(ac97, AC97_EXTENDED_STATUS, AC97_EA_SPDIF, AC97_EA_SPDIF); /* turn on again */
2522                 }
2523         }
2524 }
2525 
2526 /**
2527  * snd_ac97_resume - General resume function for AC97 codec
2528  * @ac97: the ac97 instance
2529  *
2530  * Do the standard resume procedure, power up and restoring the
2531  * old register values.
2532  */
2533 void snd_ac97_resume(struct snd_ac97 *ac97)
2534 {
2535         unsigned long end_time;
2536 
2537         if (! ac97)
2538                 return;
2539 
2540         if (ac97->bus->ops->reset) {
2541                 ac97->bus->ops->reset(ac97);
2542                 goto  __reset_ready;
2543         }
2544 
2545         snd_ac97_write(ac97, AC97_POWERDOWN, 0);
2546         if (! (ac97->flags & AC97_DEFAULT_POWER_OFF)) {
2547                 if (!(ac97->scaps & AC97_SCAP_SKIP_AUDIO))
2548                         snd_ac97_write(ac97, AC97_RESET, 0);
2549                 else if (!(ac97->scaps & AC97_SCAP_SKIP_MODEM))
2550                         snd_ac97_write(ac97, AC97_EXTENDED_MID, 0);
2551                 udelay(100);
2552                 snd_ac97_write(ac97, AC97_POWERDOWN, 0);
2553         }
2554         snd_ac97_write(ac97, AC97_GENERAL_PURPOSE, 0);
2555 
2556         snd_ac97_write(ac97, AC97_POWERDOWN, ac97->regs[AC97_POWERDOWN]);
2557         if (ac97_is_audio(ac97)) {
2558                 ac97->bus->ops->write(ac97, AC97_MASTER, 0x8101);
2559                 end_time = jiffies + msecs_to_jiffies(100);
2560                 do {
2561                         if (snd_ac97_read(ac97, AC97_MASTER) == 0x8101)
2562                                 break;
2563                         schedule_timeout_uninterruptible(1);
2564                 } while (time_after_eq(end_time, jiffies));
2565                 /* FIXME: extra delay */
2566                 ac97->bus->ops->write(ac97, AC97_MASTER, AC97_MUTE_MASK_MONO);
2567                 if (snd_ac97_read(ac97, AC97_MASTER) != AC97_MUTE_MASK_MONO)
2568                         msleep(250);
2569         } else {
2570                 end_time = jiffies + msecs_to_jiffies(100);
2571                 do {
2572                         unsigned short val = snd_ac97_read(ac97, AC97_EXTENDED_MID);
2573                         if (val != 0xffff && (val & 1) != 0)
2574                                 break;
2575                         schedule_timeout_uninterruptible(1);
2576                 } while (time_after_eq(end_time, jiffies));
2577         }
2578 __reset_ready:
2579 
2580         if (ac97->bus->ops->init)
2581                 ac97->bus->ops->init(ac97);
2582 
2583         if (ac97->build_ops->resume)
2584                 ac97->build_ops->resume(ac97);
2585         else {
2586                 snd_ac97_restore_status(ac97);
2587                 snd_ac97_restore_iec958(ac97);
2588         }
2589 }
2590 
2591 EXPORT_SYMBOL(snd_ac97_resume);
2592 #endif
2593 
2594 
2595 /*
2596  * Hardware tuning
2597  */
2598 static void set_ctl_name(char *dst, const char *src, const char *suffix)
2599 {
2600         if (suffix)
2601                 sprintf(dst, "%s %s", src, suffix);
2602         else
2603                 strcpy(dst, src);
2604 }       
2605 
2606 /* remove the control with the given name and optional suffix */
2607 static int snd_ac97_remove_ctl(struct snd_ac97 *ac97, const char *name,
2608                                const char *suffix)
2609 {
2610         struct snd_ctl_elem_id id;
2611         memset(&id, 0, sizeof(id));
2612         set_ctl_name(id.name, name, suffix);
2613         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
2614         return snd_ctl_remove_id(ac97->bus->card, &id);
2615 }
2616 
2617 static struct snd_kcontrol *ctl_find(struct snd_ac97 *ac97, const char *name, const char *suffix)
2618 {
2619         struct snd_ctl_elem_id sid;
2620         memset(&sid, 0, sizeof(sid));
2621         set_ctl_name(sid.name, name, suffix);
2622         sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
2623         return snd_ctl_find_id(ac97->bus->card, &sid);
2624 }
2625 
2626 /* rename the control with the given name and optional suffix */
2627 static int snd_ac97_rename_ctl(struct snd_ac97 *ac97, const char *src,
2628                                const char *dst, const char *suffix)
2629 {
2630         struct snd_kcontrol *kctl = ctl_find(ac97, src, suffix);
2631         if (kctl) {
2632                 set_ctl_name(kctl->id.name, dst, suffix);
2633                 return 0;
2634         }
2635         return -ENOENT;
2636 }
2637 
2638 /* rename both Volume and Switch controls - don't check the return value */
2639 static void snd_ac97_rename_vol_ctl(struct snd_ac97 *ac97, const char *src,
2640                                     const char *dst)
2641 {
2642         snd_ac97_rename_ctl(ac97, src, dst, "Switch");
2643         snd_ac97_rename_ctl(ac97, src, dst, "Volume");
2644 }
2645 
2646 /* swap controls */
2647 static int snd_ac97_swap_ctl(struct snd_ac97 *ac97, const char *s1,
2648                              const char *s2, const char *suffix)
2649 {
2650         struct snd_kcontrol *kctl1, *kctl2;
2651         kctl1 = ctl_find(ac97, s1, suffix);
2652         kctl2 = ctl_find(ac97, s2, suffix);
2653         if (kctl1 && kctl2) {
2654                 set_ctl_name(kctl1->id.name, s2, suffix);
2655                 set_ctl_name(kctl2->id.name, s1, suffix);
2656                 return 0;
2657         }
2658         return -ENOENT;
2659 }
2660 
2661 #if 1
2662 /* bind hp and master controls instead of using only hp control */
2663 static int bind_hp_volsw_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2664 {
2665         int err = snd_ac97_put_volsw(kcontrol, ucontrol);
2666         if (err > 0) {
2667                 unsigned long priv_saved = kcontrol->private_value;
2668                 kcontrol->private_value = (kcontrol->private_value & ~0xff) | AC97_HEADPHONE;
2669                 snd_ac97_put_volsw(kcontrol, ucontrol);
2670                 kcontrol->private_value = priv_saved;
2671         }
2672         return err;
2673 }
2674 
2675 /* ac97 tune: bind Master and Headphone controls */
2676 static int tune_hp_only(struct snd_ac97 *ac97)
2677 {
2678         struct snd_kcontrol *msw = ctl_find(ac97, "Master Playback Switch", NULL);
2679         struct snd_kcontrol *mvol = ctl_find(ac97, "Master Playback Volume", NULL);
2680         if (! msw || ! mvol)
2681                 return -ENOENT;
2682         msw->put = bind_hp_volsw_put;
2683         mvol->put = bind_hp_volsw_put;
2684         snd_ac97_remove_ctl(ac97, "Headphone Playback", "Switch");
2685         snd_ac97_remove_ctl(ac97, "Headphone Playback", "Volume");
2686         return 0;
2687 }
2688 
2689 #else
2690 /* ac97 tune: use Headphone control as master */
2691 static int tune_hp_only(struct snd_ac97 *ac97)
2692 {
2693         if (ctl_find(ac97, "Headphone Playback Switch", NULL) == NULL)
2694                 return -ENOENT;
2695         snd_ac97_remove_ctl(ac97, "Master Playback", "Switch");
2696         snd_ac97_remove_ctl(ac97, "Master Playback", "Volume");
2697         snd_ac97_rename_vol_ctl(ac97, "Headphone Playback", "Master Playback");
2698         return 0;
2699 }
2700 #endif
2701 
2702 /* ac97 tune: swap Headphone and Master controls */
2703 static int tune_swap_hp(struct snd_ac97 *ac97)
2704 {
2705         if (ctl_find(ac97, "Headphone Playback Switch", NULL) == NULL)
2706                 return -ENOENT;
2707         snd_ac97_rename_vol_ctl(ac97, "Master Playback", "Line-Out Playback");
2708         snd_ac97_rename_vol_ctl(ac97, "Headphone Playback", "Master Playback");
2709         return 0;
2710 }
2711 
2712 /* ac97 tune: swap Surround and Master controls */
2713 static int tune_swap_surround(struct snd_ac97 *ac97)
2714 {
2715         if (snd_ac97_swap_ctl(ac97, "Master Playback", "Surround Playback", "Switch") ||
2716             snd_ac97_swap_ctl(ac97, "Master Playback", "Surround Playback", "Volume"))
2717                 return -ENOENT;
2718         return 0;
2719 }
2720 
2721 /* ac97 tune: set up mic sharing for AD codecs */
2722 static int tune_ad_sharing(struct snd_ac97 *ac97)
2723 {
2724         unsigned short scfg;
2725         if ((ac97->id & 0xffffff00) != 0x41445300) {
2726                 snd_printk(KERN_ERR "ac97_quirk AD_SHARING is only for AD codecs\n");
2727                 return -EINVAL;
2728         }
2729         /* Turn on OMS bit to route microphone to back panel */
2730         scfg = snd_ac97_read(ac97, AC97_AD_SERIAL_CFG);
2731         snd_ac97_write_cache(ac97, AC97_AD_SERIAL_CFG, scfg | 0x0200);
2732         return 0;
2733 }
2734 
2735 static const struct snd_kcontrol_new snd_ac97_alc_jack_detect = 
2736 AC97_SINGLE("Jack Detect", AC97_ALC650_CLOCK, 5, 1, 0);
2737 
2738 /* ac97 tune: set up ALC jack-select */
2739 static int tune_alc_jack(struct snd_ac97 *ac97)
2740 {
2741         if ((ac97->id & 0xffffff00) != 0x414c4700) {
2742                 snd_printk(KERN_ERR "ac97_quirk ALC_JACK is only for Realtek codecs\n");
2743                 return -EINVAL;
2744         }
2745         snd_ac97_update_bits(ac97, 0x7a, 0x20, 0x20); /* select jack detect function */
2746         snd_ac97_update_bits(ac97, 0x7a, 0x01, 0x01); /* Line-out auto mute */
2747         if (ac97->id == AC97_ID_ALC658D)
2748                 snd_ac97_update_bits(ac97, 0x74, 0x0800, 0x0800);
2749         return snd_ctl_add(ac97->bus->card, snd_ac97_cnew(&snd_ac97_alc_jack_detect, ac97));
2750 }
2751 
2752 /* ac97 tune: inversed EAPD bit */
2753 static int tune_inv_eapd(struct snd_ac97 *ac97)
2754 {
2755         struct snd_kcontrol *kctl = ctl_find(ac97, "External Amplifier", NULL);
2756         if (! kctl)
2757                 return -ENOENT;
2758         set_inv_eapd(ac97, kctl);
2759         return 0;
2760 }
2761 
2762 static int master_mute_sw_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2763 {
2764         int err = snd_ac97_put_volsw(kcontrol, ucontrol);
2765         if (err > 0) {
2766                 struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
2767                 int shift = (kcontrol->private_value >> 8) & 0x0f;
2768                 int rshift = (kcontrol->private_value >> 12) & 0x0f;
2769                 unsigned short mask;
2770                 if (shift != rshift)
2771                         mask = AC97_MUTE_MASK_STEREO;
2772                 else
2773                         mask = AC97_MUTE_MASK_MONO;
2774                 snd_ac97_update_bits(ac97, AC97_POWERDOWN, AC97_PD_EAPD,
2775                                      (ac97->regs[AC97_MASTER] & mask) == mask ?
2776                                      AC97_PD_EAPD : 0);
2777         }
2778         return err;
2779 }
2780 
2781 /* ac97 tune: EAPD controls mute LED bound with the master mute */
2782 static int tune_mute_led(struct snd_ac97 *ac97)
2783 {
2784         struct snd_kcontrol *msw = ctl_find(ac97, "Master Playback Switch", NULL);
2785         if (! msw)
2786                 return -ENOENT;
2787         msw->put = master_mute_sw_put;
2788         snd_ac97_remove_ctl(ac97, "External Amplifier", NULL);
2789         snd_ac97_update_bits(
2790                 ac97, AC97_POWERDOWN,
2791                 AC97_PD_EAPD, AC97_PD_EAPD /* mute LED on */
2792         );
2793         ac97->scaps |= AC97_SCAP_EAPD_LED;
2794         return 0;
2795 }
2796 
2797 static int hp_master_mute_sw_put(struct snd_kcontrol *kcontrol,
2798                                  struct snd_ctl_elem_value *ucontrol)
2799 {
2800         int err = bind_hp_volsw_put(kcontrol, ucontrol);
2801         if (err > 0) {
2802                 struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
2803                 int shift = (kcontrol->private_value >> 8) & 0x0f;
2804                 int rshift = (kcontrol->private_value >> 12) & 0x0f;
2805                 unsigned short mask;
2806                 if (shift != rshift)
2807                         mask = AC97_MUTE_MASK_STEREO;
2808                 else
2809                         mask = AC97_MUTE_MASK_MONO;
2810                 snd_ac97_update_bits(ac97, AC97_POWERDOWN, AC97_PD_EAPD,
2811                                      (ac97->regs[AC97_MASTER] & mask) == mask ?
2812                                      AC97_PD_EAPD : 0);
2813         }
2814         return err;
2815 }
2816 
2817 static int tune_hp_mute_led(struct snd_ac97 *ac97)
2818 {
2819         struct snd_kcontrol *msw = ctl_find(ac97, "Master Playback Switch", NULL);
2820         struct snd_kcontrol *mvol = ctl_find(ac97, "Master Playback Volume", NULL);
2821         if (! msw || ! mvol)
2822                 return -ENOENT;
2823         msw->put = hp_master_mute_sw_put;
2824         mvol->put = bind_hp_volsw_put;
2825         snd_ac97_remove_ctl(ac97, "External Amplifier", NULL);
2826         snd_ac97_remove_ctl(ac97, "Headphone Playback", "Switch");
2827         snd_ac97_remove_ctl(ac97, "Headphone Playback", "Volume");
2828         snd_ac97_update_bits(
2829                 ac97, AC97_POWERDOWN,
2830                 AC97_PD_EAPD, AC97_PD_EAPD /* mute LED on */
2831         );
2832         return 0;
2833 }
2834 
2835 struct quirk_table {
2836         const char *name;
2837         int (*func)(struct snd_ac97 *);
2838 };
2839 
2840 static struct quirk_table applicable_quirks[] = {
2841         { "none", NULL },
2842         { "hp_only", tune_hp_only },
2843         { "swap_hp", tune_swap_hp },
2844         { "swap_surround", tune_swap_surround },
2845         { "ad_sharing", tune_ad_sharing },
2846         { "alc_jack", tune_alc_jack },
2847         { "inv_eapd", tune_inv_eapd },
2848         { "mute_led", tune_mute_led },
2849         { "hp_mute_led", tune_hp_mute_led },
2850 };
2851 
2852 /* apply the quirk with the given type */
2853 static int apply_quirk(struct snd_ac97 *ac97, int type)
2854 {
2855         if (type <= 0)
2856                 return 0;
2857         else if (type >= ARRAY_SIZE(applicable_quirks))
2858                 return -EINVAL;
2859         if (applicable_quirks[type].func)
2860                 return applicable_quirks[type].func(ac97);
2861         return 0;
2862 }
2863 
2864 /* apply the quirk with the given name */
2865 static int apply_quirk_str(struct snd_ac97 *ac97, const char *typestr)
2866 {
2867         int i;
2868         struct quirk_table *q;
2869 
2870         for (i = 0; i < ARRAY_SIZE(applicable_quirks); i++) {
2871                 q = &applicable_quirks[i];
2872                 if (q->name && ! strcmp(typestr, q->name))
2873                         return apply_quirk(ac97, i);
2874         }
2875         /* for compatibility, accept the numbers, too */
2876         if (*typestr >= '' && *typestr <= '9')
2877                 return apply_quirk(ac97, (int)simple_strtoul(typestr, NULL, 10));
2878         return -EINVAL;
2879 }
2880 
2881 /**
2882  * snd_ac97_tune_hardware - tune up the hardware
2883  * @ac97: the ac97 instance
2884  * @quirk: quirk list
2885  * @override: explicit quirk value (overrides the list if non-NULL)
2886  *
2887  * Do some workaround for each pci device, such as renaming of the
2888  * headphone (true line-out) control as "Master".
2889  * The quirk-list must be terminated with a zero-filled entry.
2890  *
2891  * Return: Zero if successful, or a negative error code on failure.
2892  */
2893 
2894 int snd_ac97_tune_hardware(struct snd_ac97 *ac97, struct ac97_quirk *quirk, const char *override)
2895 {
2896         int result;
2897 
2898         /* quirk overriden? */
2899         if (override && strcmp(override, "-1") && strcmp(override, "default")) {
2900                 result = apply_quirk_str(ac97, override);
2901                 if (result < 0)
2902                         snd_printk(KERN_ERR "applying quirk type %s failed (%d)\n", override, result);
2903                 return result;
2904         }
2905 
2906         if (! quirk)
2907                 return -EINVAL;
2908 
2909         for (; quirk->subvendor; quirk++) {
2910                 if (quirk->subvendor != ac97->subsystem_vendor)
2911                         continue;
2912                 if ((! quirk->mask && quirk->subdevice == ac97->subsystem_device) ||
2913                     quirk->subdevice == (quirk->mask & ac97->subsystem_device)) {
2914                         if (quirk->codec_id && quirk->codec_id != ac97->id)
2915                                 continue;
2916                         snd_printdd("ac97 quirk for %s (%04x:%04x)\n", quirk->name, ac97->subsystem_vendor, ac97->subsystem_device);
2917                         result = apply_quirk(ac97, quirk->type);
2918                         if (result < 0)
2919                                 snd_printk(KERN_ERR "applying quirk type %d for %s failed (%d)\n", quirk->type, quirk->name, result);
2920                         return result;
2921                 }
2922         }
2923         return 0;
2924 }
2925 
2926 EXPORT_SYMBOL(snd_ac97_tune_hardware);
2927 
2928 /*
2929  *  INIT part
2930  */
2931 
2932 static int __init alsa_ac97_init(void)
2933 {
2934         return 0;
2935 }
2936 
2937 static void __exit alsa_ac97_exit(void)
2938 {
2939 }
2940 
2941 module_init(alsa_ac97_init)
2942 module_exit(alsa_ac97_exit)
2943 

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