Merge tag 'dt-for-palmer-v6.1-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git...
[platform/kernel/linux-starfive.git] / sound / pci / intel8x0m.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *   ALSA modem driver for Intel ICH (i8x0) chipsets
4  *
5  *      Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz>
6  *
7  *   This is modified (by Sasha Khapyorsky <sashak@alsa-project.org>) version
8  *   of ALSA ICH sound driver intel8x0.c .
9  */      
10
11 #include <linux/io.h>
12 #include <linux/delay.h>
13 #include <linux/interrupt.h>
14 #include <linux/init.h>
15 #include <linux/pci.h>
16 #include <linux/slab.h>
17 #include <linux/module.h>
18 #include <sound/core.h>
19 #include <sound/pcm.h>
20 #include <sound/ac97_codec.h>
21 #include <sound/info.h>
22 #include <sound/initval.h>
23
24 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
25 MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; "
26                    "SiS 7013; NVidia MCP/2/2S/3 modems");
27 MODULE_LICENSE("GPL");
28
29 static int index = -2; /* Exclude the first card */
30 static char *id = SNDRV_DEFAULT_STR1;   /* ID for this card */
31 static int ac97_clock;
32
33 module_param(index, int, 0444);
34 MODULE_PARM_DESC(index, "Index value for Intel i8x0 modemcard.");
35 module_param(id, charp, 0444);
36 MODULE_PARM_DESC(id, "ID string for Intel i8x0 modemcard.");
37 module_param(ac97_clock, int, 0444);
38 MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
39
40 /* just for backward compatibility */
41 static bool enable;
42 module_param(enable, bool, 0444);
43
44 /*
45  *  Direct registers
46  */
47 enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
48
49 #define ICHREG(x) ICH_REG_##x
50
51 #define DEFINE_REGSET(name,base) \
52 enum { \
53         ICH_REG_##name##_BDBAR  = base + 0x0,   /* dword - buffer descriptor list base address */ \
54         ICH_REG_##name##_CIV    = base + 0x04,  /* byte - current index value */ \
55         ICH_REG_##name##_LVI    = base + 0x05,  /* byte - last valid index */ \
56         ICH_REG_##name##_SR     = base + 0x06,  /* byte - status register */ \
57         ICH_REG_##name##_PICB   = base + 0x08,  /* word - position in current buffer */ \
58         ICH_REG_##name##_PIV    = base + 0x0a,  /* byte - prefetched index value */ \
59         ICH_REG_##name##_CR     = base + 0x0b,  /* byte - control register */ \
60 }
61
62 /* busmaster blocks */
63 DEFINE_REGSET(OFF, 0);          /* offset */
64
65 /* values for each busmaster block */
66
67 /* LVI */
68 #define ICH_REG_LVI_MASK                0x1f
69
70 /* SR */
71 #define ICH_FIFOE                       0x10    /* FIFO error */
72 #define ICH_BCIS                        0x08    /* buffer completion interrupt status */
73 #define ICH_LVBCI                       0x04    /* last valid buffer completion interrupt */
74 #define ICH_CELV                        0x02    /* current equals last valid */
75 #define ICH_DCH                         0x01    /* DMA controller halted */
76
77 /* PIV */
78 #define ICH_REG_PIV_MASK                0x1f    /* mask */
79
80 /* CR */
81 #define ICH_IOCE                        0x10    /* interrupt on completion enable */
82 #define ICH_FEIE                        0x08    /* fifo error interrupt enable */
83 #define ICH_LVBIE                       0x04    /* last valid buffer interrupt enable */
84 #define ICH_RESETREGS                   0x02    /* reset busmaster registers */
85 #define ICH_STARTBM                     0x01    /* start busmaster operation */
86
87
88 /* global block */
89 #define ICH_REG_GLOB_CNT                0x3c    /* dword - global control */
90 #define   ICH_TRIE              0x00000040      /* tertiary resume interrupt enable */
91 #define   ICH_SRIE              0x00000020      /* secondary resume interrupt enable */
92 #define   ICH_PRIE              0x00000010      /* primary resume interrupt enable */
93 #define   ICH_ACLINK            0x00000008      /* AClink shut off */
94 #define   ICH_AC97WARM          0x00000004      /* AC'97 warm reset */
95 #define   ICH_AC97COLD          0x00000002      /* AC'97 cold reset */
96 #define   ICH_GIE               0x00000001      /* GPI interrupt enable */
97 #define ICH_REG_GLOB_STA                0x40    /* dword - global status */
98 #define   ICH_TRI               0x20000000      /* ICH4: tertiary (AC_SDIN2) resume interrupt */
99 #define   ICH_TCR               0x10000000      /* ICH4: tertiary (AC_SDIN2) codec ready */
100 #define   ICH_BCS               0x08000000      /* ICH4: bit clock stopped */
101 #define   ICH_SPINT             0x04000000      /* ICH4: S/PDIF interrupt */
102 #define   ICH_P2INT             0x02000000      /* ICH4: PCM2-In interrupt */
103 #define   ICH_M2INT             0x01000000      /* ICH4: Mic2-In interrupt */
104 #define   ICH_SAMPLE_CAP        0x00c00000      /* ICH4: sample capability bits (RO) */
105 #define   ICH_MULTICHAN_CAP     0x00300000      /* ICH4: multi-channel capability bits (RO) */
106 #define   ICH_MD3               0x00020000      /* modem power down semaphore */
107 #define   ICH_AD3               0x00010000      /* audio power down semaphore */
108 #define   ICH_RCS               0x00008000      /* read completion status */
109 #define   ICH_BIT3              0x00004000      /* bit 3 slot 12 */
110 #define   ICH_BIT2              0x00002000      /* bit 2 slot 12 */
111 #define   ICH_BIT1              0x00001000      /* bit 1 slot 12 */
112 #define   ICH_SRI               0x00000800      /* secondary (AC_SDIN1) resume interrupt */
113 #define   ICH_PRI               0x00000400      /* primary (AC_SDIN0) resume interrupt */
114 #define   ICH_SCR               0x00000200      /* secondary (AC_SDIN1) codec ready */
115 #define   ICH_PCR               0x00000100      /* primary (AC_SDIN0) codec ready */
116 #define   ICH_MCINT             0x00000080      /* MIC capture interrupt */
117 #define   ICH_POINT             0x00000040      /* playback interrupt */
118 #define   ICH_PIINT             0x00000020      /* capture interrupt */
119 #define   ICH_NVSPINT           0x00000010      /* nforce spdif interrupt */
120 #define   ICH_MOINT             0x00000004      /* modem playback interrupt */
121 #define   ICH_MIINT             0x00000002      /* modem capture interrupt */
122 #define   ICH_GSCI              0x00000001      /* GPI status change interrupt */
123 #define ICH_REG_ACC_SEMA                0x44    /* byte - codec write semaphore */
124 #define   ICH_CAS               0x01            /* codec access semaphore */
125
126 #define ICH_MAX_FRAGS           32              /* max hw frags */
127
128
129 /*
130  *  
131  */
132
133 enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
134 enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
135
136 #define get_ichdev(substream) (substream->runtime->private_data)
137
138 struct ichdev {
139         unsigned int ichd;                      /* ich device number */
140         unsigned long reg_offset;               /* offset to bmaddr */
141         __le32 *bdbar;                          /* CPU address (32bit) */
142         unsigned int bdbar_addr;                /* PCI bus address (32bit) */
143         struct snd_pcm_substream *substream;
144         unsigned int physbuf;                   /* physical address (32bit) */
145         unsigned int size;
146         unsigned int fragsize;
147         unsigned int fragsize1;
148         unsigned int position;
149         int frags;
150         int lvi;
151         int lvi_frag;
152         int civ;
153         int ack;
154         int ack_reload;
155         unsigned int ack_bit;
156         unsigned int roff_sr;
157         unsigned int roff_picb;
158         unsigned int int_sta_mask;              /* interrupt status mask */
159         unsigned int ali_slot;                  /* ALI DMA slot */
160         struct snd_ac97 *ac97;
161 };
162
163 struct intel8x0m {
164         unsigned int device_type;
165
166         int irq;
167
168         void __iomem *addr;
169         void __iomem *bmaddr;
170
171         struct pci_dev *pci;
172         struct snd_card *card;
173
174         int pcm_devs;
175         struct snd_pcm *pcm[2];
176         struct ichdev ichd[2];
177
178         unsigned int in_ac97_init: 1;
179
180         struct snd_ac97_bus *ac97_bus;
181         struct snd_ac97 *ac97;
182
183         spinlock_t reg_lock;
184         
185         struct snd_dma_buffer *bdbars;
186         u32 bdbars_count;
187         u32 int_sta_reg;                /* interrupt status register */
188         u32 int_sta_mask;               /* interrupt status mask */
189         unsigned int pcm_pos_shift;
190 };
191
192 static const struct pci_device_id snd_intel8x0m_ids[] = {
193         { PCI_VDEVICE(INTEL, 0x2416), DEVICE_INTEL },   /* 82801AA */
194         { PCI_VDEVICE(INTEL, 0x2426), DEVICE_INTEL },   /* 82901AB */
195         { PCI_VDEVICE(INTEL, 0x2446), DEVICE_INTEL },   /* 82801BA */
196         { PCI_VDEVICE(INTEL, 0x2486), DEVICE_INTEL },   /* ICH3 */
197         { PCI_VDEVICE(INTEL, 0x24c6), DEVICE_INTEL }, /* ICH4 */
198         { PCI_VDEVICE(INTEL, 0x24d6), DEVICE_INTEL }, /* ICH5 */
199         { PCI_VDEVICE(INTEL, 0x266d), DEVICE_INTEL },   /* ICH6 */
200         { PCI_VDEVICE(INTEL, 0x27dd), DEVICE_INTEL },   /* ICH7 */
201         { PCI_VDEVICE(INTEL, 0x7196), DEVICE_INTEL },   /* 440MX */
202         { PCI_VDEVICE(AMD, 0x7446), DEVICE_INTEL },     /* AMD768 */
203         { PCI_VDEVICE(SI, 0x7013), DEVICE_SIS },        /* SI7013 */
204         { PCI_VDEVICE(NVIDIA, 0x01c1), DEVICE_NFORCE }, /* NFORCE */
205         { PCI_VDEVICE(NVIDIA, 0x0069), DEVICE_NFORCE }, /* NFORCE2 */
206         { PCI_VDEVICE(NVIDIA, 0x0089), DEVICE_NFORCE }, /* NFORCE2s */
207         { PCI_VDEVICE(NVIDIA, 0x00d9), DEVICE_NFORCE }, /* NFORCE3 */
208         { PCI_VDEVICE(AMD, 0x746e), DEVICE_INTEL },     /* AMD8111 */
209 #if 0
210         { PCI_VDEVICE(AL, 0x5455), DEVICE_ALI },   /* Ali5455 */
211 #endif
212         { 0, }
213 };
214
215 MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
216
217 /*
218  *  Lowlevel I/O - busmaster
219  */
220
221 static inline u8 igetbyte(struct intel8x0m *chip, u32 offset)
222 {
223         return ioread8(chip->bmaddr + offset);
224 }
225
226 static inline u16 igetword(struct intel8x0m *chip, u32 offset)
227 {
228         return ioread16(chip->bmaddr + offset);
229 }
230
231 static inline u32 igetdword(struct intel8x0m *chip, u32 offset)
232 {
233         return ioread32(chip->bmaddr + offset);
234 }
235
236 static inline void iputbyte(struct intel8x0m *chip, u32 offset, u8 val)
237 {
238         iowrite8(val, chip->bmaddr + offset);
239 }
240
241 static inline void iputword(struct intel8x0m *chip, u32 offset, u16 val)
242 {
243         iowrite16(val, chip->bmaddr + offset);
244 }
245
246 static inline void iputdword(struct intel8x0m *chip, u32 offset, u32 val)
247 {
248         iowrite32(val, chip->bmaddr + offset);
249 }
250
251 /*
252  *  Lowlevel I/O - AC'97 registers
253  */
254
255 static inline u16 iagetword(struct intel8x0m *chip, u32 offset)
256 {
257         return ioread16(chip->addr + offset);
258 }
259
260 static inline void iaputword(struct intel8x0m *chip, u32 offset, u16 val)
261 {
262         iowrite16(val, chip->addr + offset);
263 }
264
265 /*
266  *  Basic I/O
267  */
268
269 /*
270  * access to AC97 codec via normal i/o (for ICH and SIS7013)
271  */
272
273 /* return the GLOB_STA bit for the corresponding codec */
274 static unsigned int get_ich_codec_bit(struct intel8x0m *chip, unsigned int codec)
275 {
276         static const unsigned int codec_bit[3] = {
277                 ICH_PCR, ICH_SCR, ICH_TCR
278         };
279         if (snd_BUG_ON(codec >= 3))
280                 return ICH_PCR;
281         return codec_bit[codec];
282 }
283
284 static int snd_intel8x0m_codec_semaphore(struct intel8x0m *chip, unsigned int codec)
285 {
286         int time;
287         
288         if (codec > 1)
289                 return -EIO;
290         codec = get_ich_codec_bit(chip, codec);
291
292         /* codec ready ? */
293         if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
294                 return -EIO;
295
296         /* Anyone holding a semaphore for 1 msec should be shot... */
297         time = 100;
298         do {
299                 if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
300                         return 0;
301                 udelay(10);
302         } while (time--);
303
304         /* access to some forbidden (non existent) ac97 registers will not
305          * reset the semaphore. So even if you don't get the semaphore, still
306          * continue the access. We don't need the semaphore anyway. */
307         dev_err(chip->card->dev,
308                 "codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
309                         igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
310         iagetword(chip, 0);     /* clear semaphore flag */
311         /* I don't care about the semaphore */
312         return -EBUSY;
313 }
314  
315 static void snd_intel8x0m_codec_write(struct snd_ac97 *ac97,
316                                       unsigned short reg,
317                                       unsigned short val)
318 {
319         struct intel8x0m *chip = ac97->private_data;
320         
321         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
322                 if (! chip->in_ac97_init)
323                         dev_err(chip->card->dev,
324                                 "codec_write %d: semaphore is not ready for register 0x%x\n",
325                                 ac97->num, reg);
326         }
327         iaputword(chip, reg + ac97->num * 0x80, val);
328 }
329
330 static unsigned short snd_intel8x0m_codec_read(struct snd_ac97 *ac97,
331                                                unsigned short reg)
332 {
333         struct intel8x0m *chip = ac97->private_data;
334         unsigned short res;
335         unsigned int tmp;
336
337         if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
338                 if (! chip->in_ac97_init)
339                         dev_err(chip->card->dev,
340                                 "codec_read %d: semaphore is not ready for register 0x%x\n",
341                                 ac97->num, reg);
342                 res = 0xffff;
343         } else {
344                 res = iagetword(chip, reg + ac97->num * 0x80);
345                 tmp = igetdword(chip, ICHREG(GLOB_STA));
346                 if (tmp & ICH_RCS) {
347                         /* reset RCS and preserve other R/WC bits */
348                         iputdword(chip, ICHREG(GLOB_STA),
349                                   tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
350                         if (! chip->in_ac97_init)
351                                 dev_err(chip->card->dev,
352                                         "codec_read %d: read timeout for register 0x%x\n",
353                                         ac97->num, reg);
354                         res = 0xffff;
355                 }
356         }
357         if (reg == AC97_GPIO_STATUS)
358                 iagetword(chip, 0); /* clear semaphore */
359         return res;
360 }
361
362
363 /*
364  * DMA I/O
365  */
366 static void snd_intel8x0m_setup_periods(struct intel8x0m *chip, struct ichdev *ichdev)
367 {
368         int idx;
369         __le32 *bdbar = ichdev->bdbar;
370         unsigned long port = ichdev->reg_offset;
371
372         iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
373         if (ichdev->size == ichdev->fragsize) {
374                 ichdev->ack_reload = ichdev->ack = 2;
375                 ichdev->fragsize1 = ichdev->fragsize >> 1;
376                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
377                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
378                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
379                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
380                         bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
381                         bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
382                                                      ichdev->fragsize1 >> chip->pcm_pos_shift);
383                 }
384                 ichdev->frags = 2;
385         } else {
386                 ichdev->ack_reload = ichdev->ack = 1;
387                 ichdev->fragsize1 = ichdev->fragsize;
388                 for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
389                         bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
390                         bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
391                                                      ichdev->fragsize >> chip->pcm_pos_shift);
392                         /*
393                         dev_dbg(chip->card->dev, "bdbar[%i] = 0x%x [0x%x]\n",
394                                idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
395                         */
396                 }
397                 ichdev->frags = ichdev->size / ichdev->fragsize;
398         }
399         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
400         ichdev->civ = 0;
401         iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
402         ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
403         ichdev->position = 0;
404 #if 0
405         dev_dbg(chip->card->dev,
406                 "lvi_frag = %i, frags = %i, period_size = 0x%x, period_size1 = 0x%x\n",
407                ichdev->lvi_frag, ichdev->frags, ichdev->fragsize,
408                ichdev->fragsize1);
409 #endif
410         /* clear interrupts */
411         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
412 }
413
414 /*
415  *  Interrupt handler
416  */
417
418 static inline void snd_intel8x0m_update(struct intel8x0m *chip, struct ichdev *ichdev)
419 {
420         unsigned long port = ichdev->reg_offset;
421         int civ, i, step;
422         int ack = 0;
423
424         civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
425         if (civ == ichdev->civ) {
426                 // snd_printd("civ same %d\n", civ);
427                 step = 1;
428                 ichdev->civ++;
429                 ichdev->civ &= ICH_REG_LVI_MASK;
430         } else {
431                 step = civ - ichdev->civ;
432                 if (step < 0)
433                         step += ICH_REG_LVI_MASK + 1;
434                 // if (step != 1)
435                 //      snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
436                 ichdev->civ = civ;
437         }
438
439         ichdev->position += step * ichdev->fragsize1;
440         ichdev->position %= ichdev->size;
441         ichdev->lvi += step;
442         ichdev->lvi &= ICH_REG_LVI_MASK;
443         iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
444         for (i = 0; i < step; i++) {
445                 ichdev->lvi_frag++;
446                 ichdev->lvi_frag %= ichdev->frags;
447                 ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf +
448                                                              ichdev->lvi_frag *
449                                                              ichdev->fragsize1);
450 #if 0
451                 dev_dbg(chip->card->dev,
452                         "new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, all = 0x%x, 0x%x\n",
453                        ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2],
454                        ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port),
455                        inl(port + 4), inb(port + ICH_REG_OFF_CR));
456 #endif
457                 if (--ichdev->ack == 0) {
458                         ichdev->ack = ichdev->ack_reload;
459                         ack = 1;
460                 }
461         }
462         if (ack && ichdev->substream) {
463                 spin_unlock(&chip->reg_lock);
464                 snd_pcm_period_elapsed(ichdev->substream);
465                 spin_lock(&chip->reg_lock);
466         }
467         iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
468 }
469
470 static irqreturn_t snd_intel8x0m_interrupt(int irq, void *dev_id)
471 {
472         struct intel8x0m *chip = dev_id;
473         struct ichdev *ichdev;
474         unsigned int status;
475         unsigned int i;
476
477         spin_lock(&chip->reg_lock);
478         status = igetdword(chip, chip->int_sta_reg);
479         if (status == 0xffffffff) { /* we are not yet resumed */
480                 spin_unlock(&chip->reg_lock);
481                 return IRQ_NONE;
482         }
483         if ((status & chip->int_sta_mask) == 0) {
484                 if (status)
485                         iputdword(chip, chip->int_sta_reg, status);
486                 spin_unlock(&chip->reg_lock);
487                 return IRQ_NONE;
488         }
489
490         for (i = 0; i < chip->bdbars_count; i++) {
491                 ichdev = &chip->ichd[i];
492                 if (status & ichdev->int_sta_mask)
493                         snd_intel8x0m_update(chip, ichdev);
494         }
495
496         /* ack them */
497         iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
498         spin_unlock(&chip->reg_lock);
499         
500         return IRQ_HANDLED;
501 }
502
503 /*
504  *  PCM part
505  */
506
507 static int snd_intel8x0m_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
508 {
509         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
510         struct ichdev *ichdev = get_ichdev(substream);
511         unsigned char val = 0;
512         unsigned long port = ichdev->reg_offset;
513
514         switch (cmd) {
515         case SNDRV_PCM_TRIGGER_START:
516         case SNDRV_PCM_TRIGGER_RESUME:
517                 val = ICH_IOCE | ICH_STARTBM;
518                 break;
519         case SNDRV_PCM_TRIGGER_STOP:
520         case SNDRV_PCM_TRIGGER_SUSPEND:
521                 val = 0;
522                 break;
523         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
524                 val = ICH_IOCE;
525                 break;
526         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
527                 val = ICH_IOCE | ICH_STARTBM;
528                 break;
529         default:
530                 return -EINVAL;
531         }
532         iputbyte(chip, port + ICH_REG_OFF_CR, val);
533         if (cmd == SNDRV_PCM_TRIGGER_STOP) {
534                 /* wait until DMA stopped */
535                 while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
536                 /* reset whole DMA things */
537                 iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
538         }
539         return 0;
540 }
541
542 static snd_pcm_uframes_t snd_intel8x0m_pcm_pointer(struct snd_pcm_substream *substream)
543 {
544         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
545         struct ichdev *ichdev = get_ichdev(substream);
546         size_t ptr1, ptr;
547
548         ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
549         if (ptr1 != 0)
550                 ptr = ichdev->fragsize1 - ptr1;
551         else
552                 ptr = 0;
553         ptr += ichdev->position;
554         if (ptr >= ichdev->size)
555                 return 0;
556         return bytes_to_frames(substream->runtime, ptr);
557 }
558
559 static int snd_intel8x0m_pcm_prepare(struct snd_pcm_substream *substream)
560 {
561         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
562         struct snd_pcm_runtime *runtime = substream->runtime;
563         struct ichdev *ichdev = get_ichdev(substream);
564
565         ichdev->physbuf = runtime->dma_addr;
566         ichdev->size = snd_pcm_lib_buffer_bytes(substream);
567         ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
568         snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
569         snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
570         snd_intel8x0m_setup_periods(chip, ichdev);
571         return 0;
572 }
573
574 static const struct snd_pcm_hardware snd_intel8x0m_stream =
575 {
576         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
577                                  SNDRV_PCM_INFO_BLOCK_TRANSFER |
578                                  SNDRV_PCM_INFO_MMAP_VALID |
579                                  SNDRV_PCM_INFO_PAUSE |
580                                  SNDRV_PCM_INFO_RESUME),
581         .formats =              SNDRV_PCM_FMTBIT_S16_LE,
582         .rates =                SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT,
583         .rate_min =             8000,
584         .rate_max =             16000,
585         .channels_min =         1,
586         .channels_max =         1,
587         .buffer_bytes_max =     64 * 1024,
588         .period_bytes_min =     32,
589         .period_bytes_max =     64 * 1024,
590         .periods_min =          1,
591         .periods_max =          1024,
592         .fifo_size =            0,
593 };
594
595
596 static int snd_intel8x0m_pcm_open(struct snd_pcm_substream *substream, struct ichdev *ichdev)
597 {
598         static const unsigned int rates[] = { 8000,  9600, 12000, 16000 };
599         static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
600                 .count = ARRAY_SIZE(rates),
601                 .list = rates,
602                 .mask = 0,
603         };
604         struct snd_pcm_runtime *runtime = substream->runtime;
605         int err;
606
607         ichdev->substream = substream;
608         runtime->hw = snd_intel8x0m_stream;
609         err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
610                                          &hw_constraints_rates);
611         if ( err < 0 )
612                 return err;
613         runtime->private_data = ichdev;
614         return 0;
615 }
616
617 static int snd_intel8x0m_playback_open(struct snd_pcm_substream *substream)
618 {
619         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
620
621         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
622 }
623
624 static int snd_intel8x0m_playback_close(struct snd_pcm_substream *substream)
625 {
626         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
627
628         chip->ichd[ICHD_MDMOUT].substream = NULL;
629         return 0;
630 }
631
632 static int snd_intel8x0m_capture_open(struct snd_pcm_substream *substream)
633 {
634         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
635
636         return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
637 }
638
639 static int snd_intel8x0m_capture_close(struct snd_pcm_substream *substream)
640 {
641         struct intel8x0m *chip = snd_pcm_substream_chip(substream);
642
643         chip->ichd[ICHD_MDMIN].substream = NULL;
644         return 0;
645 }
646
647
648 static const struct snd_pcm_ops snd_intel8x0m_playback_ops = {
649         .open =         snd_intel8x0m_playback_open,
650         .close =        snd_intel8x0m_playback_close,
651         .prepare =      snd_intel8x0m_pcm_prepare,
652         .trigger =      snd_intel8x0m_pcm_trigger,
653         .pointer =      snd_intel8x0m_pcm_pointer,
654 };
655
656 static const struct snd_pcm_ops snd_intel8x0m_capture_ops = {
657         .open =         snd_intel8x0m_capture_open,
658         .close =        snd_intel8x0m_capture_close,
659         .prepare =      snd_intel8x0m_pcm_prepare,
660         .trigger =      snd_intel8x0m_pcm_trigger,
661         .pointer =      snd_intel8x0m_pcm_pointer,
662 };
663
664
665 struct ich_pcm_table {
666         char *suffix;
667         const struct snd_pcm_ops *playback_ops;
668         const struct snd_pcm_ops *capture_ops;
669         size_t prealloc_size;
670         size_t prealloc_max_size;
671         int ac97_idx;
672 };
673
674 static int snd_intel8x0m_pcm1(struct intel8x0m *chip, int device,
675                               const struct ich_pcm_table *rec)
676 {
677         struct snd_pcm *pcm;
678         int err;
679         char name[32];
680
681         if (rec->suffix)
682                 sprintf(name, "Intel ICH - %s", rec->suffix);
683         else
684                 strcpy(name, "Intel ICH");
685         err = snd_pcm_new(chip->card, name, device,
686                           rec->playback_ops ? 1 : 0,
687                           rec->capture_ops ? 1 : 0, &pcm);
688         if (err < 0)
689                 return err;
690
691         if (rec->playback_ops)
692                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
693         if (rec->capture_ops)
694                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
695
696         pcm->private_data = chip;
697         pcm->info_flags = 0;
698         pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
699         if (rec->suffix)
700                 sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
701         else
702                 strcpy(pcm->name, chip->card->shortname);
703         chip->pcm[device] = pcm;
704
705         snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
706                                        &chip->pci->dev,
707                                        rec->prealloc_size,
708                                        rec->prealloc_max_size);
709
710         return 0;
711 }
712
713 static const struct ich_pcm_table intel_pcms[] = {
714         {
715                 .suffix = "Modem",
716                 .playback_ops = &snd_intel8x0m_playback_ops,
717                 .capture_ops = &snd_intel8x0m_capture_ops,
718                 .prealloc_size = 32 * 1024,
719                 .prealloc_max_size = 64 * 1024,
720         },
721 };
722
723 static int snd_intel8x0m_pcm(struct intel8x0m *chip)
724 {
725         int i, tblsize, device, err;
726         const struct ich_pcm_table *tbl, *rec;
727
728 #if 1
729         tbl = intel_pcms;
730         tblsize = 1;
731 #else
732         switch (chip->device_type) {
733         case DEVICE_NFORCE:
734                 tbl = nforce_pcms;
735                 tblsize = ARRAY_SIZE(nforce_pcms);
736                 break;
737         case DEVICE_ALI:
738                 tbl = ali_pcms;
739                 tblsize = ARRAY_SIZE(ali_pcms);
740                 break;
741         default:
742                 tbl = intel_pcms;
743                 tblsize = 2;
744                 break;
745         }
746 #endif
747         device = 0;
748         for (i = 0; i < tblsize; i++) {
749                 rec = tbl + i;
750                 if (i > 0 && rec->ac97_idx) {
751                         /* activate PCM only when associated AC'97 codec */
752                         if (! chip->ichd[rec->ac97_idx].ac97)
753                                 continue;
754                 }
755                 err = snd_intel8x0m_pcm1(chip, device, rec);
756                 if (err < 0)
757                         return err;
758                 device++;
759         }
760
761         chip->pcm_devs = device;
762         return 0;
763 }
764         
765
766 /*
767  *  Mixer part
768  */
769
770 static void snd_intel8x0m_mixer_free_ac97_bus(struct snd_ac97_bus *bus)
771 {
772         struct intel8x0m *chip = bus->private_data;
773         chip->ac97_bus = NULL;
774 }
775
776 static void snd_intel8x0m_mixer_free_ac97(struct snd_ac97 *ac97)
777 {
778         struct intel8x0m *chip = ac97->private_data;
779         chip->ac97 = NULL;
780 }
781
782
783 static int snd_intel8x0m_mixer(struct intel8x0m *chip, int ac97_clock)
784 {
785         struct snd_ac97_bus *pbus;
786         struct snd_ac97_template ac97;
787         struct snd_ac97 *x97;
788         int err;
789         unsigned int glob_sta = 0;
790         static const struct snd_ac97_bus_ops ops = {
791                 .write = snd_intel8x0m_codec_write,
792                 .read = snd_intel8x0m_codec_read,
793         };
794
795         chip->in_ac97_init = 1;
796         
797         memset(&ac97, 0, sizeof(ac97));
798         ac97.private_data = chip;
799         ac97.private_free = snd_intel8x0m_mixer_free_ac97;
800         ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE;
801
802         glob_sta = igetdword(chip, ICHREG(GLOB_STA));
803
804         err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus);
805         if (err < 0)
806                 goto __err;
807         pbus->private_free = snd_intel8x0m_mixer_free_ac97_bus;
808         if (ac97_clock >= 8000 && ac97_clock <= 48000)
809                 pbus->clock = ac97_clock;
810         chip->ac97_bus = pbus;
811
812         ac97.pci = chip->pci;
813         ac97.num = glob_sta & ICH_SCR ? 1 : 0;
814         err = snd_ac97_mixer(pbus, &ac97, &x97);
815         if (err < 0) {
816                 dev_err(chip->card->dev,
817                         "Unable to initialize codec #%d\n", ac97.num);
818                 if (ac97.num == 0)
819                         goto __err;
820                 return err;
821         }
822         chip->ac97 = x97;
823         if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
824                 chip->ichd[ICHD_MDMIN].ac97 = x97;
825                 chip->ichd[ICHD_MDMOUT].ac97 = x97;
826         }
827
828         chip->in_ac97_init = 0;
829         return 0;
830
831  __err:
832         /* clear the cold-reset bit for the next chance */
833         if (chip->device_type != DEVICE_ALI)
834                 iputdword(chip, ICHREG(GLOB_CNT),
835                           igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
836         return err;
837 }
838
839
840 /*
841  *
842  */
843
844 static int snd_intel8x0m_ich_chip_init(struct intel8x0m *chip, int probing)
845 {
846         unsigned long end_time;
847         unsigned int cnt, status, nstatus;
848         
849         /* put logic to right state */
850         /* first clear status bits */
851         status = ICH_RCS | ICH_MIINT | ICH_MOINT;
852         cnt = igetdword(chip, ICHREG(GLOB_STA));
853         iputdword(chip, ICHREG(GLOB_STA), cnt & status);
854
855         /* ACLink on, 2 channels */
856         cnt = igetdword(chip, ICHREG(GLOB_CNT));
857         cnt &= ~(ICH_ACLINK);
858         /* finish cold or do warm reset */
859         cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
860         iputdword(chip, ICHREG(GLOB_CNT), cnt);
861         usleep_range(500, 1000); /* give warm reset some time */
862         end_time = jiffies + HZ / 4;
863         do {
864                 if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
865                         goto __ok;
866                 schedule_timeout_uninterruptible(1);
867         } while (time_after_eq(end_time, jiffies));
868         dev_err(chip->card->dev, "AC'97 warm reset still in progress? [0x%x]\n",
869                    igetdword(chip, ICHREG(GLOB_CNT)));
870         return -EIO;
871
872       __ok:
873         if (probing) {
874                 /* wait for any codec ready status.
875                  * Once it becomes ready it should remain ready
876                  * as long as we do not disable the ac97 link.
877                  */
878                 end_time = jiffies + HZ;
879                 do {
880                         status = igetdword(chip, ICHREG(GLOB_STA)) &
881                                 (ICH_PCR | ICH_SCR | ICH_TCR);
882                         if (status)
883                                 break;
884                         schedule_timeout_uninterruptible(1);
885                 } while (time_after_eq(end_time, jiffies));
886                 if (! status) {
887                         /* no codec is found */
888                         dev_err(chip->card->dev,
889                                 "codec_ready: codec is not ready [0x%x]\n",
890                                    igetdword(chip, ICHREG(GLOB_STA)));
891                         return -EIO;
892                 }
893
894                 /* up to two codecs (modem cannot be tertiary with ICH4) */
895                 nstatus = ICH_PCR | ICH_SCR;
896
897                 /* wait for other codecs ready status. */
898                 end_time = jiffies + HZ / 4;
899                 while (status != nstatus && time_after_eq(end_time, jiffies)) {
900                         schedule_timeout_uninterruptible(1);
901                         status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
902                 }
903
904         } else {
905                 /* resume phase */
906                 status = 0;
907                 if (chip->ac97)
908                         status |= get_ich_codec_bit(chip, chip->ac97->num);
909                 /* wait until all the probed codecs are ready */
910                 end_time = jiffies + HZ;
911                 do {
912                         nstatus = igetdword(chip, ICHREG(GLOB_STA)) &
913                                 (ICH_PCR | ICH_SCR | ICH_TCR);
914                         if (status == nstatus)
915                                 break;
916                         schedule_timeout_uninterruptible(1);
917                 } while (time_after_eq(end_time, jiffies));
918         }
919
920         if (chip->device_type == DEVICE_SIS) {
921                 /* unmute the output on SIS7012 */
922                 iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
923         }
924
925         return 0;
926 }
927
928 static int snd_intel8x0m_chip_init(struct intel8x0m *chip, int probing)
929 {
930         unsigned int i;
931         int err;
932         
933         err = snd_intel8x0m_ich_chip_init(chip, probing);
934         if (err < 0)
935                 return err;
936         iagetword(chip, 0);     /* clear semaphore flag */
937
938         /* disable interrupts */
939         for (i = 0; i < chip->bdbars_count; i++)
940                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
941         /* reset channels */
942         for (i = 0; i < chip->bdbars_count; i++)
943                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
944         /* initialize Buffer Descriptor Lists */
945         for (i = 0; i < chip->bdbars_count; i++)
946                 iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
947         return 0;
948 }
949
950 static void snd_intel8x0m_free(struct snd_card *card)
951 {
952         struct intel8x0m *chip = card->private_data;
953         unsigned int i;
954
955         if (chip->irq < 0)
956                 goto __hw_end;
957         /* disable interrupts */
958         for (i = 0; i < chip->bdbars_count; i++)
959                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
960         /* reset channels */
961         for (i = 0; i < chip->bdbars_count; i++)
962                 iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
963  __hw_end:
964         if (chip->irq >= 0)
965                 free_irq(chip->irq, chip);
966 }
967
968 #ifdef CONFIG_PM_SLEEP
969 /*
970  * power management
971  */
972 static int intel8x0m_suspend(struct device *dev)
973 {
974         struct snd_card *card = dev_get_drvdata(dev);
975         struct intel8x0m *chip = card->private_data;
976
977         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
978         snd_ac97_suspend(chip->ac97);
979         if (chip->irq >= 0) {
980                 free_irq(chip->irq, chip);
981                 chip->irq = -1;
982                 card->sync_irq = -1;
983         }
984         return 0;
985 }
986
987 static int intel8x0m_resume(struct device *dev)
988 {
989         struct pci_dev *pci = to_pci_dev(dev);
990         struct snd_card *card = dev_get_drvdata(dev);
991         struct intel8x0m *chip = card->private_data;
992
993         if (request_irq(pci->irq, snd_intel8x0m_interrupt,
994                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
995                 dev_err(dev, "unable to grab IRQ %d, disabling device\n",
996                         pci->irq);
997                 snd_card_disconnect(card);
998                 return -EIO;
999         }
1000         chip->irq = pci->irq;
1001         card->sync_irq = chip->irq;
1002         snd_intel8x0m_chip_init(chip, 0);
1003         snd_ac97_resume(chip->ac97);
1004
1005         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
1006         return 0;
1007 }
1008
1009 static SIMPLE_DEV_PM_OPS(intel8x0m_pm, intel8x0m_suspend, intel8x0m_resume);
1010 #define INTEL8X0M_PM_OPS        &intel8x0m_pm
1011 #else
1012 #define INTEL8X0M_PM_OPS        NULL
1013 #endif /* CONFIG_PM_SLEEP */
1014
1015 static void snd_intel8x0m_proc_read(struct snd_info_entry * entry,
1016                                    struct snd_info_buffer *buffer)
1017 {
1018         struct intel8x0m *chip = entry->private_data;
1019         unsigned int tmp;
1020
1021         snd_iprintf(buffer, "Intel8x0m\n\n");
1022         if (chip->device_type == DEVICE_ALI)
1023                 return;
1024         tmp = igetdword(chip, ICHREG(GLOB_STA));
1025         snd_iprintf(buffer, "Global control        : 0x%08x\n",
1026                     igetdword(chip, ICHREG(GLOB_CNT)));
1027         snd_iprintf(buffer, "Global status         : 0x%08x\n", tmp);
1028         snd_iprintf(buffer, "AC'97 codecs ready    :%s%s%s%s\n",
1029                         tmp & ICH_PCR ? " primary" : "",
1030                         tmp & ICH_SCR ? " secondary" : "",
1031                         tmp & ICH_TCR ? " tertiary" : "",
1032                         (tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
1033 }
1034
1035 static void snd_intel8x0m_proc_init(struct intel8x0m *chip)
1036 {
1037         snd_card_ro_proc_new(chip->card, "intel8x0m", chip,
1038                              snd_intel8x0m_proc_read);
1039 }
1040
1041 struct ich_reg_info {
1042         unsigned int int_sta_mask;
1043         unsigned int offset;
1044 };
1045
1046 static int snd_intel8x0m_init(struct snd_card *card,
1047                               struct pci_dev *pci,
1048                               unsigned long device_type)
1049 {
1050         struct intel8x0m *chip = card->private_data;
1051         int err;
1052         unsigned int i;
1053         unsigned int int_sta_masks;
1054         struct ichdev *ichdev;
1055         static const struct ich_reg_info intel_regs[2] = {
1056                 { ICH_MIINT, 0 },
1057                 { ICH_MOINT, 0x10 },
1058         };
1059         const struct ich_reg_info *tbl;
1060
1061         err = pcim_enable_device(pci);
1062         if (err < 0)
1063                 return err;
1064
1065         spin_lock_init(&chip->reg_lock);
1066         chip->device_type = device_type;
1067         chip->card = card;
1068         chip->pci = pci;
1069         chip->irq = -1;
1070
1071         err = pci_request_regions(pci, card->shortname);
1072         if (err < 0)
1073                 return err;
1074
1075         if (device_type == DEVICE_ALI) {
1076                 /* ALI5455 has no ac97 region */
1077                 chip->bmaddr = pcim_iomap(pci, 0, 0);
1078         } else {
1079                 if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) /* ICH4 and Nforce */
1080                         chip->addr = pcim_iomap(pci, 2, 0);
1081                 else
1082                         chip->addr = pcim_iomap(pci, 0, 0);
1083                 if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) /* ICH4 */
1084                         chip->bmaddr = pcim_iomap(pci, 3, 0);
1085                 else
1086                         chip->bmaddr = pcim_iomap(pci, 1, 0);
1087         }
1088
1089         /* initialize offsets */
1090         chip->bdbars_count = 2;
1091         tbl = intel_regs;
1092
1093         for (i = 0; i < chip->bdbars_count; i++) {
1094                 ichdev = &chip->ichd[i];
1095                 ichdev->ichd = i;
1096                 ichdev->reg_offset = tbl[i].offset;
1097                 ichdev->int_sta_mask = tbl[i].int_sta_mask;
1098                 if (device_type == DEVICE_SIS) {
1099                         /* SiS 7013 swaps the registers */
1100                         ichdev->roff_sr = ICH_REG_OFF_PICB;
1101                         ichdev->roff_picb = ICH_REG_OFF_SR;
1102                 } else {
1103                         ichdev->roff_sr = ICH_REG_OFF_SR;
1104                         ichdev->roff_picb = ICH_REG_OFF_PICB;
1105                 }
1106                 if (device_type == DEVICE_ALI)
1107                         ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
1108         }
1109         /* SIS7013 handles the pcm data in bytes, others are in words */
1110         chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
1111
1112         /* allocate buffer descriptor lists */
1113         /* the start of each lists must be aligned to 8 bytes */
1114         chip->bdbars = snd_devm_alloc_pages(&pci->dev, SNDRV_DMA_TYPE_DEV,
1115                                             chip->bdbars_count * sizeof(u32) *
1116                                             ICH_MAX_FRAGS * 2);
1117         if (!chip->bdbars)
1118                 return -ENOMEM;
1119
1120         /* tables must be aligned to 8 bytes here, but the kernel pages
1121            are much bigger, so we don't care (on i386) */
1122         int_sta_masks = 0;
1123         for (i = 0; i < chip->bdbars_count; i++) {
1124                 ichdev = &chip->ichd[i];
1125                 ichdev->bdbar = ((__le32 *)chip->bdbars->area) + (i * ICH_MAX_FRAGS * 2);
1126                 ichdev->bdbar_addr = chip->bdbars->addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
1127                 int_sta_masks |= ichdev->int_sta_mask;
1128         }
1129         chip->int_sta_reg = ICH_REG_GLOB_STA;
1130         chip->int_sta_mask = int_sta_masks;
1131
1132         pci_set_master(pci);
1133
1134         err = snd_intel8x0m_chip_init(chip, 1);
1135         if (err < 0)
1136                 return err;
1137
1138         /* NOTE: we don't use devm version here since it's released /
1139          * re-acquired in PM callbacks.
1140          * It's released explicitly in snd_intel8x0m_free(), too.
1141          */
1142         if (request_irq(pci->irq, snd_intel8x0m_interrupt, IRQF_SHARED,
1143                         KBUILD_MODNAME, chip)) {
1144                 dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq);
1145                 return -EBUSY;
1146         }
1147         chip->irq = pci->irq;
1148         card->sync_irq = chip->irq;
1149
1150         card->private_free = snd_intel8x0m_free;
1151
1152         return 0;
1153 }
1154
1155 static struct shortname_table {
1156         unsigned int id;
1157         const char *s;
1158 } shortnames[] = {
1159         { PCI_DEVICE_ID_INTEL_82801AA_6, "Intel 82801AA-ICH" },
1160         { PCI_DEVICE_ID_INTEL_82801AB_6, "Intel 82901AB-ICH0" },
1161         { PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
1162         { PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
1163         { PCI_DEVICE_ID_INTEL_82801CA_6, "Intel 82801CA-ICH3" },
1164         { PCI_DEVICE_ID_INTEL_82801DB_6, "Intel 82801DB-ICH4" },
1165         { PCI_DEVICE_ID_INTEL_82801EB_6, "Intel ICH5" },
1166         { PCI_DEVICE_ID_INTEL_ICH6_17, "Intel ICH6" },
1167         { PCI_DEVICE_ID_INTEL_ICH7_19, "Intel ICH7" },
1168         { 0x7446, "AMD AMD768" },
1169         { PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
1170         { PCI_DEVICE_ID_NVIDIA_MCP1_MODEM, "NVidia nForce" },
1171         { PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
1172         { PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
1173         { PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
1174         { 0x746e, "AMD AMD8111" },
1175 #if 0
1176         { 0x5455, "ALi M5455" },
1177 #endif
1178         { 0 },
1179 };
1180
1181 static int __snd_intel8x0m_probe(struct pci_dev *pci,
1182                                  const struct pci_device_id *pci_id)
1183 {
1184         struct snd_card *card;
1185         struct intel8x0m *chip;
1186         int err;
1187         struct shortname_table *name;
1188
1189         err = snd_devm_card_new(&pci->dev, index, id, THIS_MODULE,
1190                                 sizeof(*chip), &card);
1191         if (err < 0)
1192                 return err;
1193         chip = card->private_data;
1194
1195         strcpy(card->driver, "ICH-MODEM");
1196         strcpy(card->shortname, "Intel ICH");
1197         for (name = shortnames; name->id; name++) {
1198                 if (pci->device == name->id) {
1199                         strcpy(card->shortname, name->s);
1200                         break;
1201                 }
1202         }
1203         strcat(card->shortname," Modem");
1204
1205         err = snd_intel8x0m_init(card, pci, pci_id->driver_data);
1206         if (err < 0)
1207                 return err;
1208
1209         err = snd_intel8x0m_mixer(chip, ac97_clock);
1210         if (err < 0)
1211                 return err;
1212         err = snd_intel8x0m_pcm(chip);
1213         if (err < 0)
1214                 return err;
1215         
1216         snd_intel8x0m_proc_init(chip);
1217
1218         sprintf(card->longname, "%s at irq %i",
1219                 card->shortname, chip->irq);
1220
1221         err = snd_card_register(card);
1222         if (err < 0)
1223                 return err;
1224         pci_set_drvdata(pci, card);
1225         return 0;
1226 }
1227
1228 static int snd_intel8x0m_probe(struct pci_dev *pci,
1229                                const struct pci_device_id *pci_id)
1230 {
1231         return snd_card_free_on_error(&pci->dev, __snd_intel8x0m_probe(pci, pci_id));
1232 }
1233
1234 static struct pci_driver intel8x0m_driver = {
1235         .name = KBUILD_MODNAME,
1236         .id_table = snd_intel8x0m_ids,
1237         .probe = snd_intel8x0m_probe,
1238         .driver = {
1239                 .pm = INTEL8X0M_PM_OPS,
1240         },
1241 };
1242
1243 module_pci_driver(intel8x0m_driver);