e2be131723edc850d18d30601cbb60f8e7a94370
[linux-2.6.git] / sound / sparc / cs4231.c
1 /*
2  * Driver for CS4231 sound chips found on Sparcs.
3  * Copyright (C) 2002 David S. Miller <davem@redhat.com>
4  *
5  * Based entirely upon drivers/sbus/audio/cs4231.c which is:
6  * Copyright (C) 1996, 1997, 1998 Derrick J Brashear (shadow@andrew.cmu.edu)
7  * and also sound/isa/cs423x/cs4231_lib.c which is:
8  * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
9  */
10
11 #include <linux/module.h>
12 #include <linux/kernel.h>
13 #include <linux/slab.h>
14 #include <linux/delay.h>
15 #include <linux/init.h>
16 #include <linux/interrupt.h>
17 #include <linux/moduleparam.h>
18 #include <linux/irq.h>
19 #include <linux/io.h>
20
21
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/info.h>
25 #include <sound/control.h>
26 #include <sound/timer.h>
27 #include <sound/initval.h>
28 #include <sound/pcm_params.h>
29
30 #ifdef CONFIG_SBUS
31 #define SBUS_SUPPORT
32 #include <asm/sbus.h>
33 #endif
34
35 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
36 #define EBUS_SUPPORT
37 #include <linux/pci.h>
38 #include <asm/ebus.h>
39 #endif
40
41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
43 /* Enable this card */
44 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
45
46 module_param_array(index, int, NULL, 0444);
47 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
48 module_param_array(id, charp, NULL, 0444);
49 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
50 module_param_array(enable, bool, NULL, 0444);
51 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
52 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
53 MODULE_DESCRIPTION("Sun CS4231");
54 MODULE_LICENSE("GPL");
55 MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
56
57 #ifdef SBUS_SUPPORT
58 struct sbus_dma_info {
59        spinlock_t       lock;   /* DMA access lock */
60        int              dir;
61        void __iomem     *regs;
62 };
63 #endif
64
65 struct snd_cs4231;
66 struct cs4231_dma_control {
67         void            (*prepare)(struct cs4231_dma_control *dma_cont,
68                                    int dir);
69         void            (*enable)(struct cs4231_dma_control *dma_cont, int on);
70         int             (*request)(struct cs4231_dma_control *dma_cont,
71                                    dma_addr_t bus_addr, size_t len);
72         unsigned int    (*address)(struct cs4231_dma_control *dma_cont);
73         void            (*preallocate)(struct snd_cs4231 *chip,
74                                        struct snd_pcm *pcm);
75 #ifdef EBUS_SUPPORT
76         struct          ebus_dma_info   ebus_info;
77 #endif
78 #ifdef SBUS_SUPPORT
79         struct          sbus_dma_info   sbus_info;
80 #endif
81 };
82
83 struct snd_cs4231 {
84         spinlock_t              lock;   /* registers access lock */
85         void __iomem            *port;
86
87         struct cs4231_dma_control       p_dma;
88         struct cs4231_dma_control       c_dma;
89
90         u32                     flags;
91 #define CS4231_FLAG_EBUS        0x00000001
92 #define CS4231_FLAG_PLAYBACK    0x00000002
93 #define CS4231_FLAG_CAPTURE     0x00000004
94
95         struct snd_card         *card;
96         struct snd_pcm          *pcm;
97         struct snd_pcm_substream        *playback_substream;
98         unsigned int            p_periods_sent;
99         struct snd_pcm_substream        *capture_substream;
100         unsigned int            c_periods_sent;
101         struct snd_timer        *timer;
102
103         unsigned short mode;
104 #define CS4231_MODE_NONE        0x0000
105 #define CS4231_MODE_PLAY        0x0001
106 #define CS4231_MODE_RECORD      0x0002
107 #define CS4231_MODE_TIMER       0x0004
108 #define CS4231_MODE_OPEN        (CS4231_MODE_PLAY | CS4231_MODE_RECORD | \
109                                  CS4231_MODE_TIMER)
110
111         unsigned char           image[32];      /* registers image */
112         int                     mce_bit;
113         int                     calibrate_mute;
114         struct mutex            mce_mutex;      /* mutex for mce register */
115         struct mutex            open_mutex;     /* mutex for ALSA open/close */
116
117         union {
118 #ifdef SBUS_SUPPORT
119                 struct sbus_dev         *sdev;
120 #endif
121 #ifdef EBUS_SUPPORT
122                 struct pci_dev          *pdev;
123 #endif
124         } dev_u;
125         unsigned int            irq[2];
126         unsigned int            regs_size;
127         struct snd_cs4231       *next;
128 };
129
130 static struct snd_cs4231 *cs4231_list;
131
132 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
133  * now....  -DaveM
134  */
135
136 /* IO ports */
137 #include <sound/cs4231-regs.h>
138
139 /* XXX offsets are different than PC ISA chips... */
140 #define CS4231U(chip, x)        ((chip)->port + ((c_d_c_CS4231##x) << 2))
141
142 /* SBUS DMA register defines.  */
143
144 #define APCCSR  0x10UL  /* APC DMA CSR */
145 #define APCCVA  0x20UL  /* APC Capture DMA Address */
146 #define APCCC   0x24UL  /* APC Capture Count */
147 #define APCCNVA 0x28UL  /* APC Capture DMA Next Address */
148 #define APCCNC  0x2cUL  /* APC Capture Next Count */
149 #define APCPVA  0x30UL  /* APC Play DMA Address */
150 #define APCPC   0x34UL  /* APC Play Count */
151 #define APCPNVA 0x38UL  /* APC Play DMA Next Address */
152 #define APCPNC  0x3cUL  /* APC Play Next Count */
153
154 /* Defines for SBUS DMA-routines */
155
156 #define APCVA  0x0UL    /* APC DMA Address */
157 #define APCC   0x4UL    /* APC Count */
158 #define APCNVA 0x8UL    /* APC DMA Next Address */
159 #define APCNC  0xcUL    /* APC Next Count */
160 #define APC_PLAY 0x30UL /* Play registers start at 0x30 */
161 #define APC_RECORD 0x20UL /* Record registers start at 0x20 */
162
163 /* APCCSR bits */
164
165 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
166 #define APC_PLAY_INT    0x400000 /* Playback interrupt */
167 #define APC_CAPT_INT    0x200000 /* Capture interrupt */
168 #define APC_GENL_INT    0x100000 /* General interrupt */
169 #define APC_XINT_ENA    0x80000  /* General ext int. enable */
170 #define APC_XINT_PLAY   0x40000  /* Playback ext intr */
171 #define APC_XINT_CAPT   0x20000  /* Capture ext intr */
172 #define APC_XINT_GENL   0x10000  /* Error ext intr */
173 #define APC_XINT_EMPT   0x8000   /* Pipe empty interrupt (0 write to pva) */
174 #define APC_XINT_PEMP   0x4000   /* Play pipe empty (pva and pnva not set) */
175 #define APC_XINT_PNVA   0x2000   /* Playback NVA dirty */
176 #define APC_XINT_PENA   0x1000   /* play pipe empty Int enable */
177 #define APC_XINT_COVF   0x800    /* Cap data dropped on floor */
178 #define APC_XINT_CNVA   0x400    /* Capture NVA dirty */
179 #define APC_XINT_CEMP   0x200    /* Capture pipe empty (cva and cnva not set) */
180 #define APC_XINT_CENA   0x100    /* Cap. pipe empty int enable */
181 #define APC_PPAUSE      0x80     /* Pause the play DMA */
182 #define APC_CPAUSE      0x40     /* Pause the capture DMA */
183 #define APC_CDC_RESET   0x20     /* CODEC RESET */
184 #define APC_PDMA_READY  0x08     /* Play DMA Go */
185 #define APC_CDMA_READY  0x04     /* Capture DMA Go */
186 #define APC_CHIP_RESET  0x01     /* Reset the chip */
187
188 /* EBUS DMA register offsets  */
189
190 #define EBDMA_CSR       0x00UL  /* Control/Status */
191 #define EBDMA_ADDR      0x04UL  /* DMA Address */
192 #define EBDMA_COUNT     0x08UL  /* DMA Count */
193
194 /*
195  *  Some variables
196  */
197
198 static unsigned char freq_bits[14] = {
199         /* 5510 */      0x00 | CS4231_XTAL2,
200         /* 6620 */      0x0E | CS4231_XTAL2,
201         /* 8000 */      0x00 | CS4231_XTAL1,
202         /* 9600 */      0x0E | CS4231_XTAL1,
203         /* 11025 */     0x02 | CS4231_XTAL2,
204         /* 16000 */     0x02 | CS4231_XTAL1,
205         /* 18900 */     0x04 | CS4231_XTAL2,
206         /* 22050 */     0x06 | CS4231_XTAL2,
207         /* 27042 */     0x04 | CS4231_XTAL1,
208         /* 32000 */     0x06 | CS4231_XTAL1,
209         /* 33075 */     0x0C | CS4231_XTAL2,
210         /* 37800 */     0x08 | CS4231_XTAL2,
211         /* 44100 */     0x0A | CS4231_XTAL2,
212         /* 48000 */     0x0C | CS4231_XTAL1
213 };
214
215 static unsigned int rates[14] = {
216         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
217         27042, 32000, 33075, 37800, 44100, 48000
218 };
219
220 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
221         .count  = ARRAY_SIZE(rates),
222         .list   = rates,
223 };
224
225 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
226 {
227         return snd_pcm_hw_constraint_list(runtime, 0,
228                                           SNDRV_PCM_HW_PARAM_RATE,
229                                           &hw_constraints_rates);
230 }
231
232 static unsigned char snd_cs4231_original_image[32] =
233 {
234         0x00,                   /* 00/00 - lic */
235         0x00,                   /* 01/01 - ric */
236         0x9f,                   /* 02/02 - la1ic */
237         0x9f,                   /* 03/03 - ra1ic */
238         0x9f,                   /* 04/04 - la2ic */
239         0x9f,                   /* 05/05 - ra2ic */
240         0xbf,                   /* 06/06 - loc */
241         0xbf,                   /* 07/07 - roc */
242         0x20,                   /* 08/08 - pdfr */
243         CS4231_AUTOCALIB,       /* 09/09 - ic */
244         0x00,                   /* 0a/10 - pc */
245         0x00,                   /* 0b/11 - ti */
246         CS4231_MODE2,           /* 0c/12 - mi */
247         0x00,                   /* 0d/13 - lbc */
248         0x00,                   /* 0e/14 - pbru */
249         0x00,                   /* 0f/15 - pbrl */
250         0x80,                   /* 10/16 - afei */
251         0x01,                   /* 11/17 - afeii */
252         0x9f,                   /* 12/18 - llic */
253         0x9f,                   /* 13/19 - rlic */
254         0x00,                   /* 14/20 - tlb */
255         0x00,                   /* 15/21 - thb */
256         0x00,                   /* 16/22 - la3mic/reserved */
257         0x00,                   /* 17/23 - ra3mic/reserved */
258         0x00,                   /* 18/24 - afs */
259         0x00,                   /* 19/25 - lamoc/version */
260         0x00,                   /* 1a/26 - mioc */
261         0x00,                   /* 1b/27 - ramoc/reserved */
262         0x20,                   /* 1c/28 - cdfr */
263         0x00,                   /* 1d/29 - res4 */
264         0x00,                   /* 1e/30 - cbru */
265         0x00,                   /* 1f/31 - cbrl */
266 };
267
268 static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
269 {
270 #ifdef EBUS_SUPPORT
271         if (cp->flags & CS4231_FLAG_EBUS)
272                 return readb(reg_addr);
273         else
274 #endif
275 #ifdef SBUS_SUPPORT
276                 return sbus_readb(reg_addr);
277 #endif
278 }
279
280 static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val,
281                             void __iomem *reg_addr)
282 {
283 #ifdef EBUS_SUPPORT
284         if (cp->flags & CS4231_FLAG_EBUS)
285                 return writeb(val, reg_addr);
286         else
287 #endif
288 #ifdef SBUS_SUPPORT
289                 return sbus_writeb(val, reg_addr);
290 #endif
291 }
292
293 /*
294  *  Basic I/O functions
295  */
296
297 static void snd_cs4231_ready(struct snd_cs4231 *chip)
298 {
299         int timeout;
300
301         for (timeout = 250; timeout > 0; timeout--) {
302                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
303                 if ((val & CS4231_INIT) == 0)
304                         break;
305                 udelay(100);
306         }
307 }
308
309 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
310                             unsigned char value)
311 {
312         snd_cs4231_ready(chip);
313 #ifdef CONFIG_SND_DEBUG
314         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
315                 snd_printdd("out: auto calibration time out - reg = 0x%x, "
316                             "value = 0x%x\n",
317                             reg, value);
318 #endif
319         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
320         wmb();
321         __cs4231_writeb(chip, value, CS4231U(chip, REG));
322         mb();
323 }
324
325 static inline void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
326                      unsigned char mask, unsigned char value)
327 {
328         unsigned char tmp = (chip->image[reg] & mask) | value;
329
330         chip->image[reg] = tmp;
331         if (!chip->calibrate_mute)
332                 snd_cs4231_dout(chip, reg, tmp);
333 }
334
335 static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg,
336                            unsigned char value)
337 {
338         snd_cs4231_dout(chip, reg, value);
339         chip->image[reg] = value;
340         mb();
341 }
342
343 static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
344 {
345         snd_cs4231_ready(chip);
346 #ifdef CONFIG_SND_DEBUG
347         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
348                 snd_printdd("in: auto calibration time out - reg = 0x%x\n",
349                             reg);
350 #endif
351         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
352         mb();
353         return __cs4231_readb(chip, CS4231U(chip, REG));
354 }
355
356 /*
357  *  CS4231 detection / MCE routines
358  */
359
360 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
361 {
362         int timeout;
363
364         /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
365         for (timeout = 5; timeout > 0; timeout--)
366                 __cs4231_readb(chip, CS4231U(chip, REGSEL));
367
368         /* end of cleanup sequence */
369         for (timeout = 500; timeout > 0; timeout--) {
370                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
371                 if ((val & CS4231_INIT) == 0)
372                         break;
373                 msleep(1);
374         }
375 }
376
377 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
378 {
379         unsigned long flags;
380         int timeout;
381
382         spin_lock_irqsave(&chip->lock, flags);
383         snd_cs4231_ready(chip);
384 #ifdef CONFIG_SND_DEBUG
385         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
386                 snd_printdd("mce_up - auto calibration time out (0)\n");
387 #endif
388         chip->mce_bit |= CS4231_MCE;
389         timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
390         if (timeout == 0x80)
391                 snd_printdd("mce_up [%p]: serious init problem - "
392                             "codec still busy\n",
393                             chip->port);
394         if (!(timeout & CS4231_MCE))
395                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
396                                 CS4231U(chip, REGSEL));
397         spin_unlock_irqrestore(&chip->lock, flags);
398 }
399
400 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
401 {
402         unsigned long flags, timeout;
403         int reg;
404
405         snd_cs4231_busy_wait(chip);
406         spin_lock_irqsave(&chip->lock, flags);
407 #ifdef CONFIG_SND_DEBUG
408         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
409                 snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
410                             CS4231U(chip, REGSEL));
411 #endif
412         chip->mce_bit &= ~CS4231_MCE;
413         reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
414         __cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
415                         CS4231U(chip, REGSEL));
416         if (reg == 0x80)
417                 snd_printdd("mce_down [%p]: serious init problem "
418                             "- codec still busy\n", chip->port);
419         if ((reg & CS4231_MCE) == 0) {
420                 spin_unlock_irqrestore(&chip->lock, flags);
421                 return;
422         }
423
424         /*
425          * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
426          */
427         timeout = jiffies + msecs_to_jiffies(250);
428         do {
429                 spin_unlock_irqrestore(&chip->lock, flags);
430                 msleep(1);
431                 spin_lock_irqsave(&chip->lock, flags);
432                 reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
433                 reg &= CS4231_CALIB_IN_PROGRESS;
434         } while (reg && time_before(jiffies, timeout));
435         spin_unlock_irqrestore(&chip->lock, flags);
436
437         if (reg)
438                 snd_printk(KERN_ERR
439                            "mce_down - auto calibration time out (2)\n");
440 }
441
442 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
443                                    struct snd_pcm_substream *substream,
444                                    unsigned int *periods_sent)
445 {
446         struct snd_pcm_runtime *runtime = substream->runtime;
447
448         while (1) {
449                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
450                 unsigned int offset = period_size * (*periods_sent);
451
452                 BUG_ON(period_size >= (1 << 24));
453
454                 if (dma_cont->request(dma_cont,
455                                       runtime->dma_addr + offset, period_size))
456                         return;
457                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
458         }
459 }
460
461 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
462                                unsigned int what, int on)
463 {
464         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
465         struct cs4231_dma_control *dma_cont;
466
467         if (what & CS4231_PLAYBACK_ENABLE) {
468                 dma_cont = &chip->p_dma;
469                 if (on) {
470                         dma_cont->prepare(dma_cont, 0);
471                         dma_cont->enable(dma_cont, 1);
472                         snd_cs4231_advance_dma(dma_cont,
473                                 chip->playback_substream,
474                                 &chip->p_periods_sent);
475                 } else {
476                         dma_cont->enable(dma_cont, 0);
477                 }
478         }
479         if (what & CS4231_RECORD_ENABLE) {
480                 dma_cont = &chip->c_dma;
481                 if (on) {
482                         dma_cont->prepare(dma_cont, 1);
483                         dma_cont->enable(dma_cont, 1);
484                         snd_cs4231_advance_dma(dma_cont,
485                                 chip->capture_substream,
486                                 &chip->c_periods_sent);
487                 } else {
488                         dma_cont->enable(dma_cont, 0);
489                 }
490         }
491 }
492
493 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
494 {
495         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
496         int result = 0;
497
498         switch (cmd) {
499         case SNDRV_PCM_TRIGGER_START:
500         case SNDRV_PCM_TRIGGER_STOP:
501         {
502                 unsigned int what = 0;
503                 struct snd_pcm_substream *s;
504                 unsigned long flags;
505
506                 snd_pcm_group_for_each_entry(s, substream) {
507                         if (s == chip->playback_substream) {
508                                 what |= CS4231_PLAYBACK_ENABLE;
509                                 snd_pcm_trigger_done(s, substream);
510                         } else if (s == chip->capture_substream) {
511                                 what |= CS4231_RECORD_ENABLE;
512                                 snd_pcm_trigger_done(s, substream);
513                         }
514                 }
515
516                 spin_lock_irqsave(&chip->lock, flags);
517                 if (cmd == SNDRV_PCM_TRIGGER_START) {
518                         cs4231_dma_trigger(substream, what, 1);
519                         chip->image[CS4231_IFACE_CTRL] |= what;
520                 } else {
521                         cs4231_dma_trigger(substream, what, 0);
522                         chip->image[CS4231_IFACE_CTRL] &= ~what;
523                 }
524                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
525                                chip->image[CS4231_IFACE_CTRL]);
526                 spin_unlock_irqrestore(&chip->lock, flags);
527                 break;
528         }
529         default:
530                 result = -EINVAL;
531                 break;
532         }
533
534         return result;
535 }
536
537 /*
538  *  CODEC I/O
539  */
540
541 static unsigned char snd_cs4231_get_rate(unsigned int rate)
542 {
543         int i;
544
545         for (i = 0; i < 14; i++)
546                 if (rate == rates[i])
547                         return freq_bits[i];
548
549         return freq_bits[13];
550 }
551
552 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
553                                            int channels)
554 {
555         unsigned char rformat;
556
557         rformat = CS4231_LINEAR_8;
558         switch (format) {
559         case SNDRV_PCM_FORMAT_MU_LAW:
560                 rformat = CS4231_ULAW_8;
561                 break;
562         case SNDRV_PCM_FORMAT_A_LAW:
563                 rformat = CS4231_ALAW_8;
564                 break;
565         case SNDRV_PCM_FORMAT_S16_LE:
566                 rformat = CS4231_LINEAR_16;
567                 break;
568         case SNDRV_PCM_FORMAT_S16_BE:
569                 rformat = CS4231_LINEAR_16_BIG;
570                 break;
571         case SNDRV_PCM_FORMAT_IMA_ADPCM:
572                 rformat = CS4231_ADPCM_16;
573                 break;
574         }
575         if (channels > 1)
576                 rformat |= CS4231_STEREO;
577         return rformat;
578 }
579
580 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
581 {
582         unsigned long flags;
583
584         mute = mute ? 1 : 0;
585         spin_lock_irqsave(&chip->lock, flags);
586         if (chip->calibrate_mute == mute) {
587                 spin_unlock_irqrestore(&chip->lock, flags);
588                 return;
589         }
590         if (!mute) {
591                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
592                                 chip->image[CS4231_LEFT_INPUT]);
593                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
594                                 chip->image[CS4231_RIGHT_INPUT]);
595                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
596                                 chip->image[CS4231_LOOPBACK]);
597         }
598         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
599                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
600         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
601                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
602         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
603                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
604         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
605                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
606         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
607                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
608         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
609                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
610         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
611                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
612         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
613                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
614         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
615                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
616         chip->calibrate_mute = mute;
617         spin_unlock_irqrestore(&chip->lock, flags);
618 }
619
620 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
621                                        struct snd_pcm_hw_params *params,
622                                        unsigned char pdfr)
623 {
624         unsigned long flags;
625
626         mutex_lock(&chip->mce_mutex);
627         snd_cs4231_calibrate_mute(chip, 1);
628
629         snd_cs4231_mce_up(chip);
630
631         spin_lock_irqsave(&chip->lock, flags);
632         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
633                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
634                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
635                        pdfr);
636         spin_unlock_irqrestore(&chip->lock, flags);
637
638         snd_cs4231_mce_down(chip);
639
640         snd_cs4231_calibrate_mute(chip, 0);
641         mutex_unlock(&chip->mce_mutex);
642 }
643
644 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
645                                       struct snd_pcm_hw_params *params,
646                                       unsigned char cdfr)
647 {
648         unsigned long flags;
649
650         mutex_lock(&chip->mce_mutex);
651         snd_cs4231_calibrate_mute(chip, 1);
652
653         snd_cs4231_mce_up(chip);
654
655         spin_lock_irqsave(&chip->lock, flags);
656         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
657                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
658                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
659                                (cdfr & 0x0f));
660                 spin_unlock_irqrestore(&chip->lock, flags);
661                 snd_cs4231_mce_down(chip);
662                 snd_cs4231_mce_up(chip);
663                 spin_lock_irqsave(&chip->lock, flags);
664         }
665         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
666         spin_unlock_irqrestore(&chip->lock, flags);
667
668         snd_cs4231_mce_down(chip);
669
670         snd_cs4231_calibrate_mute(chip, 0);
671         mutex_unlock(&chip->mce_mutex);
672 }
673
674 /*
675  *  Timer interface
676  */
677
678 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
679 {
680         struct snd_cs4231 *chip = snd_timer_chip(timer);
681
682         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
683 }
684
685 static int snd_cs4231_timer_start(struct snd_timer *timer)
686 {
687         unsigned long flags;
688         unsigned int ticks;
689         struct snd_cs4231 *chip = snd_timer_chip(timer);
690
691         spin_lock_irqsave(&chip->lock, flags);
692         ticks = timer->sticks;
693         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
694             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
695             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
696                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
697                                chip->image[CS4231_TIMER_HIGH] =
698                                (unsigned char) (ticks >> 8));
699                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
700                                chip->image[CS4231_TIMER_LOW] =
701                                (unsigned char) ticks);
702                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
703                                chip->image[CS4231_ALT_FEATURE_1] |
704                                         CS4231_TIMER_ENABLE);
705         }
706         spin_unlock_irqrestore(&chip->lock, flags);
707
708         return 0;
709 }
710
711 static int snd_cs4231_timer_stop(struct snd_timer *timer)
712 {
713         unsigned long flags;
714         struct snd_cs4231 *chip = snd_timer_chip(timer);
715
716         spin_lock_irqsave(&chip->lock, flags);
717         chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
718         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
719                        chip->image[CS4231_ALT_FEATURE_1]);
720         spin_unlock_irqrestore(&chip->lock, flags);
721
722         return 0;
723 }
724
725 static void __init snd_cs4231_init(struct snd_cs4231 *chip)
726 {
727         unsigned long flags;
728
729         snd_cs4231_mce_down(chip);
730
731 #ifdef SNDRV_DEBUG_MCE
732         snd_printdd("init: (1)\n");
733 #endif
734         snd_cs4231_mce_up(chip);
735         spin_lock_irqsave(&chip->lock, flags);
736         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
737                                             CS4231_PLAYBACK_PIO |
738                                             CS4231_RECORD_ENABLE |
739                                             CS4231_RECORD_PIO |
740                                             CS4231_CALIB_MODE);
741         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
742         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
743         spin_unlock_irqrestore(&chip->lock, flags);
744         snd_cs4231_mce_down(chip);
745
746 #ifdef SNDRV_DEBUG_MCE
747         snd_printdd("init: (2)\n");
748 #endif
749
750         snd_cs4231_mce_up(chip);
751         spin_lock_irqsave(&chip->lock, flags);
752         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
753                         chip->image[CS4231_ALT_FEATURE_1]);
754         spin_unlock_irqrestore(&chip->lock, flags);
755         snd_cs4231_mce_down(chip);
756
757 #ifdef SNDRV_DEBUG_MCE
758         snd_printdd("init: (3) - afei = 0x%x\n",
759                     chip->image[CS4231_ALT_FEATURE_1]);
760 #endif
761
762         spin_lock_irqsave(&chip->lock, flags);
763         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
764                         chip->image[CS4231_ALT_FEATURE_2]);
765         spin_unlock_irqrestore(&chip->lock, flags);
766
767         snd_cs4231_mce_up(chip);
768         spin_lock_irqsave(&chip->lock, flags);
769         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
770                         chip->image[CS4231_PLAYBK_FORMAT]);
771         spin_unlock_irqrestore(&chip->lock, flags);
772         snd_cs4231_mce_down(chip);
773
774 #ifdef SNDRV_DEBUG_MCE
775         snd_printdd("init: (4)\n");
776 #endif
777
778         snd_cs4231_mce_up(chip);
779         spin_lock_irqsave(&chip->lock, flags);
780         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
781         spin_unlock_irqrestore(&chip->lock, flags);
782         snd_cs4231_mce_down(chip);
783
784 #ifdef SNDRV_DEBUG_MCE
785         snd_printdd("init: (5)\n");
786 #endif
787 }
788
789 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
790 {
791         unsigned long flags;
792
793         mutex_lock(&chip->open_mutex);
794         if ((chip->mode & mode)) {
795                 mutex_unlock(&chip->open_mutex);
796                 return -EAGAIN;
797         }
798         if (chip->mode & CS4231_MODE_OPEN) {
799                 chip->mode |= mode;
800                 mutex_unlock(&chip->open_mutex);
801                 return 0;
802         }
803         /* ok. now enable and ack CODEC IRQ */
804         spin_lock_irqsave(&chip->lock, flags);
805         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
806                        CS4231_RECORD_IRQ |
807                        CS4231_TIMER_IRQ);
808         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
809         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
810         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
811
812         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
813                        CS4231_RECORD_IRQ |
814                        CS4231_TIMER_IRQ);
815         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
816
817         spin_unlock_irqrestore(&chip->lock, flags);
818
819         chip->mode = mode;
820         mutex_unlock(&chip->open_mutex);
821         return 0;
822 }
823
824 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
825 {
826         unsigned long flags;
827
828         mutex_lock(&chip->open_mutex);
829         chip->mode &= ~mode;
830         if (chip->mode & CS4231_MODE_OPEN) {
831                 mutex_unlock(&chip->open_mutex);
832                 return;
833         }
834         snd_cs4231_calibrate_mute(chip, 1);
835
836         /* disable IRQ */
837         spin_lock_irqsave(&chip->lock, flags);
838         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
839         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
840         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
841
842         /* now disable record & playback */
843
844         if (chip->image[CS4231_IFACE_CTRL] &
845             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
846              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
847                 spin_unlock_irqrestore(&chip->lock, flags);
848                 snd_cs4231_mce_up(chip);
849                 spin_lock_irqsave(&chip->lock, flags);
850                 chip->image[CS4231_IFACE_CTRL] &=
851                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
852                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
853                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
854                                 chip->image[CS4231_IFACE_CTRL]);
855                 spin_unlock_irqrestore(&chip->lock, flags);
856                 snd_cs4231_mce_down(chip);
857                 spin_lock_irqsave(&chip->lock, flags);
858         }
859
860         /* clear IRQ again */
861         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
862         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
863         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
864         spin_unlock_irqrestore(&chip->lock, flags);
865
866         snd_cs4231_calibrate_mute(chip, 0);
867
868         chip->mode = 0;
869         mutex_unlock(&chip->open_mutex);
870 }
871
872 /*
873  *  timer open/close
874  */
875
876 static int snd_cs4231_timer_open(struct snd_timer *timer)
877 {
878         struct snd_cs4231 *chip = snd_timer_chip(timer);
879         snd_cs4231_open(chip, CS4231_MODE_TIMER);
880         return 0;
881 }
882
883 static int snd_cs4231_timer_close(struct snd_timer *timer)
884 {
885         struct snd_cs4231 *chip = snd_timer_chip(timer);
886         snd_cs4231_close(chip, CS4231_MODE_TIMER);
887         return 0;
888 }
889
890 static struct snd_timer_hardware snd_cs4231_timer_table = {
891         .flags          =       SNDRV_TIMER_HW_AUTO,
892         .resolution     =       9945,
893         .ticks          =       65535,
894         .open           =       snd_cs4231_timer_open,
895         .close          =       snd_cs4231_timer_close,
896         .c_resolution   =       snd_cs4231_timer_resolution,
897         .start          =       snd_cs4231_timer_start,
898         .stop           =       snd_cs4231_timer_stop,
899 };
900
901 /*
902  *  ok.. exported functions..
903  */
904
905 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
906                                          struct snd_pcm_hw_params *hw_params)
907 {
908         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
909         unsigned char new_pdfr;
910         int err;
911
912         err = snd_pcm_lib_malloc_pages(substream,
913                                         params_buffer_bytes(hw_params));
914         if (err < 0)
915                 return err;
916         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
917                                          params_channels(hw_params)) |
918                 snd_cs4231_get_rate(params_rate(hw_params));
919         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
920
921         return 0;
922 }
923
924 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
925 {
926         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
927         struct snd_pcm_runtime *runtime = substream->runtime;
928         unsigned long flags;
929
930         spin_lock_irqsave(&chip->lock, flags);
931
932         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
933                                             CS4231_PLAYBACK_PIO);
934
935         BUG_ON(runtime->period_size > 0xffff + 1);
936
937         chip->p_periods_sent = 0;
938         spin_unlock_irqrestore(&chip->lock, flags);
939
940         return 0;
941 }
942
943 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
944                                         struct snd_pcm_hw_params *hw_params)
945 {
946         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
947         unsigned char new_cdfr;
948         int err;
949
950         err = snd_pcm_lib_malloc_pages(substream,
951                                         params_buffer_bytes(hw_params));
952         if (err < 0)
953                 return err;
954         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
955                                          params_channels(hw_params)) |
956                 snd_cs4231_get_rate(params_rate(hw_params));
957         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
958
959         return 0;
960 }
961
962 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
963 {
964         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
965         unsigned long flags;
966
967         spin_lock_irqsave(&chip->lock, flags);
968         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
969                                             CS4231_RECORD_PIO);
970
971
972         chip->c_periods_sent = 0;
973         spin_unlock_irqrestore(&chip->lock, flags);
974
975         return 0;
976 }
977
978 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
979 {
980         unsigned long flags;
981         unsigned char res;
982
983         spin_lock_irqsave(&chip->lock, flags);
984         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
985         spin_unlock_irqrestore(&chip->lock, flags);
986
987         /* detect overrange only above 0dB; may be user selectable? */
988         if (res & (0x08 | 0x02))
989                 chip->capture_substream->runtime->overrange++;
990 }
991
992 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
993 {
994         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
995                 snd_pcm_period_elapsed(chip->playback_substream);
996                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
997                                             &chip->p_periods_sent);
998         }
999 }
1000
1001 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
1002 {
1003         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
1004                 snd_pcm_period_elapsed(chip->capture_substream);
1005                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
1006                                             &chip->c_periods_sent);
1007         }
1008 }
1009
1010 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
1011                                         struct snd_pcm_substream *substream)
1012 {
1013         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1014         struct cs4231_dma_control *dma_cont = &chip->p_dma;
1015         size_t ptr;
1016
1017         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1018                 return 0;
1019         ptr = dma_cont->address(dma_cont);
1020         if (ptr != 0)
1021                 ptr -= substream->runtime->dma_addr;
1022
1023         return bytes_to_frames(substream->runtime, ptr);
1024 }
1025
1026 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1027                                         struct snd_pcm_substream *substream)
1028 {
1029         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1030         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1031         size_t ptr;
1032
1033         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1034                 return 0;
1035         ptr = dma_cont->address(dma_cont);
1036         if (ptr != 0)
1037                 ptr -= substream->runtime->dma_addr;
1038
1039         return bytes_to_frames(substream->runtime, ptr);
1040 }
1041
1042 static int __init snd_cs4231_probe(struct snd_cs4231 *chip)
1043 {
1044         unsigned long flags;
1045         int i;
1046         int id = 0;
1047         int vers = 0;
1048         unsigned char *ptr;
1049
1050         for (i = 0; i < 50; i++) {
1051                 mb();
1052                 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1053                         msleep(2);
1054                 else {
1055                         spin_lock_irqsave(&chip->lock, flags);
1056                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1057                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1058                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1059                         spin_unlock_irqrestore(&chip->lock, flags);
1060                         if (id == 0x0a)
1061                                 break;  /* this is valid value */
1062                 }
1063         }
1064         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1065         if (id != 0x0a)
1066                 return -ENODEV; /* no valid device found */
1067
1068         spin_lock_irqsave(&chip->lock, flags);
1069
1070         /* clear any pendings IRQ */
1071         __cs4231_readb(chip, CS4231U(chip, STATUS));
1072         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1073         mb();
1074
1075         spin_unlock_irqrestore(&chip->lock, flags);
1076
1077         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1078         chip->image[CS4231_IFACE_CTRL] =
1079                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1080         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1081         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1082         if (vers & 0x20)
1083                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1084
1085         ptr = (unsigned char *) &chip->image;
1086
1087         snd_cs4231_mce_down(chip);
1088
1089         spin_lock_irqsave(&chip->lock, flags);
1090
1091         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1092                 snd_cs4231_out(chip, i, *ptr++);
1093
1094         spin_unlock_irqrestore(&chip->lock, flags);
1095
1096         snd_cs4231_mce_up(chip);
1097
1098         snd_cs4231_mce_down(chip);
1099
1100         mdelay(2);
1101
1102         return 0;               /* all things are ok.. */
1103 }
1104
1105 static struct snd_pcm_hardware snd_cs4231_playback = {
1106         .info                   = SNDRV_PCM_INFO_MMAP |
1107                                   SNDRV_PCM_INFO_INTERLEAVED |
1108                                   SNDRV_PCM_INFO_MMAP_VALID |
1109                                   SNDRV_PCM_INFO_SYNC_START,
1110         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1111                                   SNDRV_PCM_FMTBIT_A_LAW |
1112                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1113                                   SNDRV_PCM_FMTBIT_U8 |
1114                                   SNDRV_PCM_FMTBIT_S16_LE |
1115                                   SNDRV_PCM_FMTBIT_S16_BE,
1116         .rates                  = SNDRV_PCM_RATE_KNOT |
1117                                   SNDRV_PCM_RATE_8000_48000,
1118         .rate_min               = 5510,
1119         .rate_max               = 48000,
1120         .channels_min           = 1,
1121         .channels_max           = 2,
1122         .buffer_bytes_max       = 32 * 1024,
1123         .period_bytes_min       = 64,
1124         .period_bytes_max       = 32 * 1024,
1125         .periods_min            = 1,
1126         .periods_max            = 1024,
1127 };
1128
1129 static struct snd_pcm_hardware snd_cs4231_capture = {
1130         .info                   = SNDRV_PCM_INFO_MMAP |
1131                                   SNDRV_PCM_INFO_INTERLEAVED |
1132                                   SNDRV_PCM_INFO_MMAP_VALID |
1133                                   SNDRV_PCM_INFO_SYNC_START,
1134         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1135                                   SNDRV_PCM_FMTBIT_A_LAW |
1136                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1137                                   SNDRV_PCM_FMTBIT_U8 |
1138                                   SNDRV_PCM_FMTBIT_S16_LE |
1139                                   SNDRV_PCM_FMTBIT_S16_BE,
1140         .rates                  = SNDRV_PCM_RATE_KNOT |
1141                                   SNDRV_PCM_RATE_8000_48000,
1142         .rate_min               = 5510,
1143         .rate_max               = 48000,
1144         .channels_min           = 1,
1145         .channels_max           = 2,
1146         .buffer_bytes_max       = 32 * 1024,
1147         .period_bytes_min       = 64,
1148         .period_bytes_max       = 32 * 1024,
1149         .periods_min            = 1,
1150         .periods_max            = 1024,
1151 };
1152
1153 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1154 {
1155         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1156         struct snd_pcm_runtime *runtime = substream->runtime;
1157         int err;
1158
1159         runtime->hw = snd_cs4231_playback;
1160
1161         err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1162         if (err < 0) {
1163                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1164                 return err;
1165         }
1166         chip->playback_substream = substream;
1167         chip->p_periods_sent = 0;
1168         snd_pcm_set_sync(substream);
1169         snd_cs4231_xrate(runtime);
1170
1171         return 0;
1172 }
1173
1174 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1175 {
1176         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1177         struct snd_pcm_runtime *runtime = substream->runtime;
1178         int err;
1179
1180         runtime->hw = snd_cs4231_capture;
1181
1182         err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1183         if (err < 0) {
1184                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1185                 return err;
1186         }
1187         chip->capture_substream = substream;
1188         chip->c_periods_sent = 0;
1189         snd_pcm_set_sync(substream);
1190         snd_cs4231_xrate(runtime);
1191
1192         return 0;
1193 }
1194
1195 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1196 {
1197         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1198
1199         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1200         chip->playback_substream = NULL;
1201
1202         return 0;
1203 }
1204
1205 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1206 {
1207         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1208
1209         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1210         chip->capture_substream = NULL;
1211
1212         return 0;
1213 }
1214
1215 /* XXX We can do some power-management, in particular on EBUS using
1216  * XXX the audio AUXIO register...
1217  */
1218
1219 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1220         .open           =       snd_cs4231_playback_open,
1221         .close          =       snd_cs4231_playback_close,
1222         .ioctl          =       snd_pcm_lib_ioctl,
1223         .hw_params      =       snd_cs4231_playback_hw_params,
1224         .hw_free        =       snd_pcm_lib_free_pages,
1225         .prepare        =       snd_cs4231_playback_prepare,
1226         .trigger        =       snd_cs4231_trigger,
1227         .pointer        =       snd_cs4231_playback_pointer,
1228 };
1229
1230 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1231         .open           =       snd_cs4231_capture_open,
1232         .close          =       snd_cs4231_capture_close,
1233         .ioctl          =       snd_pcm_lib_ioctl,
1234         .hw_params      =       snd_cs4231_capture_hw_params,
1235         .hw_free        =       snd_pcm_lib_free_pages,
1236         .prepare        =       snd_cs4231_capture_prepare,
1237         .trigger        =       snd_cs4231_trigger,
1238         .pointer        =       snd_cs4231_capture_pointer,
1239 };
1240
1241 static int __init snd_cs4231_pcm(struct snd_card *card)
1242 {
1243         struct snd_cs4231 *chip = card->private_data;
1244         struct snd_pcm *pcm;
1245         int err;
1246
1247         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1248         if (err < 0)
1249                 return err;
1250
1251         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1252                         &snd_cs4231_playback_ops);
1253         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1254                         &snd_cs4231_capture_ops);
1255
1256         /* global setup */
1257         pcm->private_data = chip;
1258         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1259         strcpy(pcm->name, "CS4231");
1260
1261         chip->p_dma.preallocate(chip, pcm);
1262
1263         chip->pcm = pcm;
1264
1265         return 0;
1266 }
1267
1268 static int __init snd_cs4231_timer(struct snd_card *card)
1269 {
1270         struct snd_cs4231 *chip = card->private_data;
1271         struct snd_timer *timer;
1272         struct snd_timer_id tid;
1273         int err;
1274
1275         /* Timer initialization */
1276         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1277         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1278         tid.card = card->number;
1279         tid.device = 0;
1280         tid.subdevice = 0;
1281         err = snd_timer_new(card, "CS4231", &tid, &timer);
1282         if (err < 0)
1283                 return err;
1284         strcpy(timer->name, "CS4231");
1285         timer->private_data = chip;
1286         timer->hw = snd_cs4231_timer_table;
1287         chip->timer = timer;
1288
1289         return 0;
1290 }
1291
1292 /*
1293  *  MIXER part
1294  */
1295
1296 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1297                                struct snd_ctl_elem_info *uinfo)
1298 {
1299         static char *texts[4] = {
1300                 "Line", "CD", "Mic", "Mix"
1301         };
1302
1303         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1304         uinfo->count = 2;
1305         uinfo->value.enumerated.items = 4;
1306         if (uinfo->value.enumerated.item > 3)
1307                 uinfo->value.enumerated.item = 3;
1308         strcpy(uinfo->value.enumerated.name,
1309                 texts[uinfo->value.enumerated.item]);
1310
1311         return 0;
1312 }
1313
1314 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1315                               struct snd_ctl_elem_value *ucontrol)
1316 {
1317         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1318         unsigned long flags;
1319
1320         spin_lock_irqsave(&chip->lock, flags);
1321         ucontrol->value.enumerated.item[0] =
1322                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1323         ucontrol->value.enumerated.item[1] =
1324                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1325         spin_unlock_irqrestore(&chip->lock, flags);
1326
1327         return 0;
1328 }
1329
1330 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1331                               struct snd_ctl_elem_value *ucontrol)
1332 {
1333         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1334         unsigned long flags;
1335         unsigned short left, right;
1336         int change;
1337
1338         if (ucontrol->value.enumerated.item[0] > 3 ||
1339             ucontrol->value.enumerated.item[1] > 3)
1340                 return -EINVAL;
1341         left = ucontrol->value.enumerated.item[0] << 6;
1342         right = ucontrol->value.enumerated.item[1] << 6;
1343
1344         spin_lock_irqsave(&chip->lock, flags);
1345
1346         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1347         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1348         change = left != chip->image[CS4231_LEFT_INPUT] ||
1349                  right != chip->image[CS4231_RIGHT_INPUT];
1350         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1351         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1352
1353         spin_unlock_irqrestore(&chip->lock, flags);
1354
1355         return change;
1356 }
1357
1358 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1359                                   struct snd_ctl_elem_info *uinfo)
1360 {
1361         int mask = (kcontrol->private_value >> 16) & 0xff;
1362
1363         uinfo->type = (mask == 1) ?
1364                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1365         uinfo->count = 1;
1366         uinfo->value.integer.min = 0;
1367         uinfo->value.integer.max = mask;
1368
1369         return 0;
1370 }
1371
1372 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1373                                  struct snd_ctl_elem_value *ucontrol)
1374 {
1375         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1376         unsigned long flags;
1377         int reg = kcontrol->private_value & 0xff;
1378         int shift = (kcontrol->private_value >> 8) & 0xff;
1379         int mask = (kcontrol->private_value >> 16) & 0xff;
1380         int invert = (kcontrol->private_value >> 24) & 0xff;
1381
1382         spin_lock_irqsave(&chip->lock, flags);
1383
1384         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1385
1386         spin_unlock_irqrestore(&chip->lock, flags);
1387
1388         if (invert)
1389                 ucontrol->value.integer.value[0] =
1390                         (mask - ucontrol->value.integer.value[0]);
1391
1392         return 0;
1393 }
1394
1395 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1396                                  struct snd_ctl_elem_value *ucontrol)
1397 {
1398         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1399         unsigned long flags;
1400         int reg = kcontrol->private_value & 0xff;
1401         int shift = (kcontrol->private_value >> 8) & 0xff;
1402         int mask = (kcontrol->private_value >> 16) & 0xff;
1403         int invert = (kcontrol->private_value >> 24) & 0xff;
1404         int change;
1405         unsigned short val;
1406
1407         val = (ucontrol->value.integer.value[0] & mask);
1408         if (invert)
1409                 val = mask - val;
1410         val <<= shift;
1411
1412         spin_lock_irqsave(&chip->lock, flags);
1413
1414         val = (chip->image[reg] & ~(mask << shift)) | val;
1415         change = val != chip->image[reg];
1416         snd_cs4231_out(chip, reg, val);
1417
1418         spin_unlock_irqrestore(&chip->lock, flags);
1419
1420         return change;
1421 }
1422
1423 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1424                                   struct snd_ctl_elem_info *uinfo)
1425 {
1426         int mask = (kcontrol->private_value >> 24) & 0xff;
1427
1428         uinfo->type = mask == 1 ?
1429                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1430         uinfo->count = 2;
1431         uinfo->value.integer.min = 0;
1432         uinfo->value.integer.max = mask;
1433
1434         return 0;
1435 }
1436
1437 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1438                                  struct snd_ctl_elem_value *ucontrol)
1439 {
1440         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1441         unsigned long flags;
1442         int left_reg = kcontrol->private_value & 0xff;
1443         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1444         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1445         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1446         int mask = (kcontrol->private_value >> 24) & 0xff;
1447         int invert = (kcontrol->private_value >> 22) & 1;
1448
1449         spin_lock_irqsave(&chip->lock, flags);
1450
1451         ucontrol->value.integer.value[0] =
1452                 (chip->image[left_reg] >> shift_left) & mask;
1453         ucontrol->value.integer.value[1] =
1454                 (chip->image[right_reg] >> shift_right) & mask;
1455
1456         spin_unlock_irqrestore(&chip->lock, flags);
1457
1458         if (invert) {
1459                 ucontrol->value.integer.value[0] =
1460                         (mask - ucontrol->value.integer.value[0]);
1461                 ucontrol->value.integer.value[1] =
1462                         (mask - ucontrol->value.integer.value[1]);
1463         }
1464
1465         return 0;
1466 }
1467
1468 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1469                                  struct snd_ctl_elem_value *ucontrol)
1470 {
1471         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1472         unsigned long flags;
1473         int left_reg = kcontrol->private_value & 0xff;
1474         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1475         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1476         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1477         int mask = (kcontrol->private_value >> 24) & 0xff;
1478         int invert = (kcontrol->private_value >> 22) & 1;
1479         int change;
1480         unsigned short val1, val2;
1481
1482         val1 = ucontrol->value.integer.value[0] & mask;
1483         val2 = ucontrol->value.integer.value[1] & mask;
1484         if (invert) {
1485                 val1 = mask - val1;
1486                 val2 = mask - val2;
1487         }
1488         val1 <<= shift_left;
1489         val2 <<= shift_right;
1490
1491         spin_lock_irqsave(&chip->lock, flags);
1492
1493         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1494         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1495         change = val1 != chip->image[left_reg];
1496         change |= val2 != chip->image[right_reg];
1497         snd_cs4231_out(chip, left_reg, val1);
1498         snd_cs4231_out(chip, right_reg, val2);
1499
1500         spin_unlock_irqrestore(&chip->lock, flags);
1501
1502         return change;
1503 }
1504
1505 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1506 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1507   .info = snd_cs4231_info_single,       \
1508   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1509   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1510
1511 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1512                         shift_right, mask, invert) \
1513 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1514   .info = snd_cs4231_info_double,       \
1515   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1516   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1517                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1518
1519 static struct snd_kcontrol_new snd_cs4231_controls[] __initdata = {
1520 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1521                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1522 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1523                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1524 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1525                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1526 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1527                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1528 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1529                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1530 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1531                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1532 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1533                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1534 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1535                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1536 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1537 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1538 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1539 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1540 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1541                 15, 0),
1542 {
1543         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1544         .name   = "Capture Source",
1545         .info   = snd_cs4231_info_mux,
1546         .get    = snd_cs4231_get_mux,
1547         .put    = snd_cs4231_put_mux,
1548 },
1549 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1550                 1, 0),
1551 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1552 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1553 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1554 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1555 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1556 };
1557
1558 static int __init snd_cs4231_mixer(struct snd_card *card)
1559 {
1560         struct snd_cs4231 *chip = card->private_data;
1561         int err, idx;
1562
1563         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1564
1565         strcpy(card->mixername, chip->pcm->name);
1566
1567         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1568                 err = snd_ctl_add(card,
1569                                  snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1570                 if (err < 0)
1571                         return err;
1572         }
1573         return 0;
1574 }
1575
1576 static int dev;
1577
1578 static int __init cs4231_attach_begin(struct snd_card **rcard)
1579 {
1580         struct snd_card *card;
1581         struct snd_cs4231 *chip;
1582
1583         *rcard = NULL;
1584
1585         if (dev >= SNDRV_CARDS)
1586                 return -ENODEV;
1587
1588         if (!enable[dev]) {
1589                 dev++;
1590                 return -ENOENT;
1591         }
1592
1593         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
1594                             sizeof(struct snd_cs4231));
1595         if (card == NULL)
1596                 return -ENOMEM;
1597
1598         strcpy(card->driver, "CS4231");
1599         strcpy(card->shortname, "Sun CS4231");
1600
1601         chip = card->private_data;
1602         chip->card = card;
1603
1604         *rcard = card;
1605         return 0;
1606 }
1607
1608 static int __init cs4231_attach_finish(struct snd_card *card)
1609 {
1610         struct snd_cs4231 *chip = card->private_data;
1611         int err;
1612
1613         err = snd_cs4231_pcm(card);
1614         if (err < 0)
1615                 goto out_err;
1616
1617         err = snd_cs4231_mixer(card);
1618         if (err < 0)
1619                 goto out_err;
1620
1621         err = snd_cs4231_timer(card);
1622         if (err < 0)
1623                 goto out_err;
1624
1625         err = snd_card_register(card);
1626         if (err < 0)
1627                 goto out_err;
1628
1629         chip->next = cs4231_list;
1630         cs4231_list = chip;
1631
1632         dev++;
1633         return 0;
1634
1635 out_err:
1636         snd_card_free(card);
1637         return err;
1638 }
1639
1640 #ifdef SBUS_SUPPORT
1641
1642 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1643 {
1644         unsigned long flags;
1645         unsigned char status;
1646         u32 csr;
1647         struct snd_cs4231 *chip = dev_id;
1648
1649         /*This is IRQ is not raised by the cs4231*/
1650         if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1651                 return IRQ_NONE;
1652
1653         /* ACK the APC interrupt. */
1654         csr = sbus_readl(chip->port + APCCSR);
1655
1656         sbus_writel(csr, chip->port + APCCSR);
1657
1658         if ((csr & APC_PDMA_READY) &&
1659             (csr & APC_PLAY_INT) &&
1660             (csr & APC_XINT_PNVA) &&
1661             !(csr & APC_XINT_EMPT))
1662                         snd_cs4231_play_callback(chip);
1663
1664         if ((csr & APC_CDMA_READY) &&
1665             (csr & APC_CAPT_INT) &&
1666             (csr & APC_XINT_CNVA) &&
1667             !(csr & APC_XINT_EMPT))
1668                         snd_cs4231_capture_callback(chip);
1669
1670         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1671
1672         if (status & CS4231_TIMER_IRQ) {
1673                 if (chip->timer)
1674                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1675         }
1676
1677         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1678                 snd_cs4231_overrange(chip);
1679
1680         /* ACK the CS4231 interrupt. */
1681         spin_lock_irqsave(&chip->lock, flags);
1682         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1683         spin_unlock_irqrestore(&chip->lock, flags);
1684
1685         return IRQ_HANDLED;
1686 }
1687
1688 /*
1689  * SBUS DMA routines
1690  */
1691
1692 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1693                             dma_addr_t bus_addr, size_t len)
1694 {
1695         unsigned long flags;
1696         u32 test, csr;
1697         int err;
1698         struct sbus_dma_info *base = &dma_cont->sbus_info;
1699
1700         if (len >= (1 << 24))
1701                 return -EINVAL;
1702         spin_lock_irqsave(&base->lock, flags);
1703         csr = sbus_readl(base->regs + APCCSR);
1704         err = -EINVAL;
1705         test = APC_CDMA_READY;
1706         if (base->dir == APC_PLAY)
1707                 test = APC_PDMA_READY;
1708         if (!(csr & test))
1709                 goto out;
1710         err = -EBUSY;
1711         test = APC_XINT_CNVA;
1712         if (base->dir == APC_PLAY)
1713                 test = APC_XINT_PNVA;
1714         if (!(csr & test))
1715                 goto out;
1716         err = 0;
1717         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1718         sbus_writel(len, base->regs + base->dir + APCNC);
1719 out:
1720         spin_unlock_irqrestore(&base->lock, flags);
1721         return err;
1722 }
1723
1724 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1725 {
1726         unsigned long flags;
1727         u32 csr, test;
1728         struct sbus_dma_info *base = &dma_cont->sbus_info;
1729
1730         spin_lock_irqsave(&base->lock, flags);
1731         csr = sbus_readl(base->regs + APCCSR);
1732         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1733                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1734                  APC_XINT_PENA;
1735         if (base->dir == APC_RECORD)
1736                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1737                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1738         csr |= test;
1739         sbus_writel(csr, base->regs + APCCSR);
1740         spin_unlock_irqrestore(&base->lock, flags);
1741 }
1742
1743 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1744 {
1745         unsigned long flags;
1746         u32 csr, shift;
1747         struct sbus_dma_info *base = &dma_cont->sbus_info;
1748
1749         spin_lock_irqsave(&base->lock, flags);
1750         if (!on) {
1751                 sbus_writel(0, base->regs + base->dir + APCNC);
1752                 sbus_writel(0, base->regs + base->dir + APCNVA);
1753                 if (base->dir == APC_PLAY) {
1754                         sbus_writel(0, base->regs + base->dir + APCC);
1755                         sbus_writel(0, base->regs + base->dir + APCVA);
1756                 }
1757
1758                 udelay(1200);
1759         }
1760         csr = sbus_readl(base->regs + APCCSR);
1761         shift = 0;
1762         if (base->dir == APC_PLAY)
1763                 shift = 1;
1764         if (on)
1765                 csr &= ~(APC_CPAUSE << shift);
1766         else
1767                 csr |= (APC_CPAUSE << shift);
1768         sbus_writel(csr, base->regs + APCCSR);
1769         if (on)
1770                 csr |= (APC_CDMA_READY << shift);
1771         else
1772                 csr &= ~(APC_CDMA_READY << shift);
1773         sbus_writel(csr, base->regs + APCCSR);
1774
1775         spin_unlock_irqrestore(&base->lock, flags);
1776 }
1777
1778 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1779 {
1780         struct sbus_dma_info *base = &dma_cont->sbus_info;
1781
1782         return sbus_readl(base->regs + base->dir + APCVA);
1783 }
1784
1785 static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1786 {
1787         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1788                                               &chip->dev_u.sdev->ofdev.dev,
1789                                               64 * 1024, 128 * 1024);
1790 }
1791
1792 /*
1793  * Init and exit routines
1794  */
1795
1796 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1797 {
1798         if (chip->irq[0])
1799                 free_irq(chip->irq[0], chip);
1800
1801         if (chip->port)
1802                 sbus_iounmap(chip->port, chip->regs_size);
1803
1804         return 0;
1805 }
1806
1807 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1808 {
1809         struct snd_cs4231 *cp = device->device_data;
1810
1811         return snd_cs4231_sbus_free(cp);
1812 }
1813
1814 static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1815         .dev_free       =       snd_cs4231_sbus_dev_free,
1816 };
1817
1818 static int __init snd_cs4231_sbus_create(struct snd_card *card,
1819                                          struct sbus_dev *sdev,
1820                                          int dev)
1821 {
1822         struct snd_cs4231 *chip = card->private_data;
1823         int err;
1824
1825         spin_lock_init(&chip->lock);
1826         spin_lock_init(&chip->c_dma.sbus_info.lock);
1827         spin_lock_init(&chip->p_dma.sbus_info.lock);
1828         mutex_init(&chip->mce_mutex);
1829         mutex_init(&chip->open_mutex);
1830         chip->dev_u.sdev = sdev;
1831         chip->regs_size = sdev->reg_addrs[0].reg_size;
1832         memcpy(&chip->image, &snd_cs4231_original_image,
1833                sizeof(snd_cs4231_original_image));
1834
1835         chip->port = sbus_ioremap(&sdev->resource[0], 0,
1836                                   chip->regs_size, "cs4231");
1837         if (!chip->port) {
1838                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1839                 return -EIO;
1840         }
1841
1842         chip->c_dma.sbus_info.regs = chip->port;
1843         chip->p_dma.sbus_info.regs = chip->port;
1844         chip->c_dma.sbus_info.dir = APC_RECORD;
1845         chip->p_dma.sbus_info.dir = APC_PLAY;
1846
1847         chip->p_dma.prepare = sbus_dma_prepare;
1848         chip->p_dma.enable = sbus_dma_enable;
1849         chip->p_dma.request = sbus_dma_request;
1850         chip->p_dma.address = sbus_dma_addr;
1851         chip->p_dma.preallocate = sbus_dma_preallocate;
1852
1853         chip->c_dma.prepare = sbus_dma_prepare;
1854         chip->c_dma.enable = sbus_dma_enable;
1855         chip->c_dma.request = sbus_dma_request;
1856         chip->c_dma.address = sbus_dma_addr;
1857         chip->c_dma.preallocate = sbus_dma_preallocate;
1858
1859         if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
1860                         IRQF_SHARED, "cs4231", chip)) {
1861                 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1862                             dev, sdev->irqs[0]);
1863                 snd_cs4231_sbus_free(chip);
1864                 return -EBUSY;
1865         }
1866         chip->irq[0] = sdev->irqs[0];
1867
1868         if (snd_cs4231_probe(chip) < 0) {
1869                 snd_cs4231_sbus_free(chip);
1870                 return -ENODEV;
1871         }
1872         snd_cs4231_init(chip);
1873
1874         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1875                                   chip, &snd_cs4231_sbus_dev_ops)) < 0) {
1876                 snd_cs4231_sbus_free(chip);
1877                 return err;
1878         }
1879
1880         return 0;
1881 }
1882
1883 static int __init cs4231_sbus_attach(struct sbus_dev *sdev)
1884 {
1885         struct resource *rp = &sdev->resource[0];
1886         struct snd_card *card;
1887         int err;
1888
1889         err = cs4231_attach_begin(&card);
1890         if (err)
1891                 return err;
1892
1893         sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1894                 card->shortname,
1895                 rp->flags & 0xffL,
1896                 (unsigned long long)rp->start,
1897                 sdev->irqs[0]);
1898
1899         err = snd_cs4231_sbus_create(card, sdev, dev);
1900         if (err < 0) {
1901                 snd_card_free(card);
1902                 return err;
1903         }
1904
1905         return cs4231_attach_finish(card);
1906 }
1907 #endif
1908
1909 #ifdef EBUS_SUPPORT
1910
1911 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1912                                           void *cookie)
1913 {
1914         struct snd_cs4231 *chip = cookie;
1915
1916         snd_cs4231_play_callback(chip);
1917 }
1918
1919 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1920                                              int event, void *cookie)
1921 {
1922         struct snd_cs4231 *chip = cookie;
1923
1924         snd_cs4231_capture_callback(chip);
1925 }
1926
1927 /*
1928  * EBUS DMA wrappers
1929  */
1930
1931 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1932                              dma_addr_t bus_addr, size_t len)
1933 {
1934         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1935 }
1936
1937 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1938 {
1939         ebus_dma_enable(&dma_cont->ebus_info, on);
1940 }
1941
1942 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1943 {
1944         ebus_dma_prepare(&dma_cont->ebus_info, dir);
1945 }
1946
1947 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1948 {
1949         return ebus_dma_addr(&dma_cont->ebus_info);
1950 }
1951
1952 static void _ebus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1953 {
1954         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1955                                       snd_dma_pci_data(chip->dev_u.pdev),
1956                                       64*1024, 128*1024);
1957 }
1958
1959 /*
1960  * Init and exit routines
1961  */
1962
1963 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1964 {
1965         if (chip->c_dma.ebus_info.regs) {
1966                 ebus_dma_unregister(&chip->c_dma.ebus_info);
1967                 iounmap(chip->c_dma.ebus_info.regs);
1968         }
1969         if (chip->p_dma.ebus_info.regs) {
1970                 ebus_dma_unregister(&chip->p_dma.ebus_info);
1971                 iounmap(chip->p_dma.ebus_info.regs);
1972         }
1973
1974         if (chip->port)
1975                 iounmap(chip->port);
1976
1977         return 0;
1978 }
1979
1980 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1981 {
1982         struct snd_cs4231 *cp = device->device_data;
1983
1984         return snd_cs4231_ebus_free(cp);
1985 }
1986
1987 static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1988         .dev_free       =       snd_cs4231_ebus_dev_free,
1989 };
1990
1991 static int __init snd_cs4231_ebus_create(struct snd_card *card,
1992                                          struct linux_ebus_device *edev,
1993                                          int dev)
1994 {
1995         struct snd_cs4231 *chip = card->private_data;
1996         int err;
1997
1998         spin_lock_init(&chip->lock);
1999         spin_lock_init(&chip->c_dma.ebus_info.lock);
2000         spin_lock_init(&chip->p_dma.ebus_info.lock);
2001         mutex_init(&chip->mce_mutex);
2002         mutex_init(&chip->open_mutex);
2003         chip->flags |= CS4231_FLAG_EBUS;
2004         chip->dev_u.pdev = edev->bus->self;
2005         memcpy(&chip->image, &snd_cs4231_original_image,
2006                sizeof(snd_cs4231_original_image));
2007         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
2008         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2009         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
2010         chip->c_dma.ebus_info.client_cookie = chip;
2011         chip->c_dma.ebus_info.irq = edev->irqs[0];
2012         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
2013         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2014         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
2015         chip->p_dma.ebus_info.client_cookie = chip;
2016         chip->p_dma.ebus_info.irq = edev->irqs[1];
2017
2018         chip->p_dma.prepare = _ebus_dma_prepare;
2019         chip->p_dma.enable = _ebus_dma_enable;
2020         chip->p_dma.request = _ebus_dma_request;
2021         chip->p_dma.address = _ebus_dma_addr;
2022         chip->p_dma.preallocate = _ebus_dma_preallocate;
2023
2024         chip->c_dma.prepare = _ebus_dma_prepare;
2025         chip->c_dma.enable = _ebus_dma_enable;
2026         chip->c_dma.request = _ebus_dma_request;
2027         chip->c_dma.address = _ebus_dma_addr;
2028         chip->c_dma.preallocate = _ebus_dma_preallocate;
2029
2030         chip->port = ioremap(edev->resource[0].start, 0x10);
2031         chip->p_dma.ebus_info.regs = ioremap(edev->resource[1].start, 0x10);
2032         chip->c_dma.ebus_info.regs = ioremap(edev->resource[2].start, 0x10);
2033         if (!chip->port || !chip->p_dma.ebus_info.regs ||
2034             !chip->c_dma.ebus_info.regs) {
2035                 snd_cs4231_ebus_free(chip);
2036                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2037                 return -EIO;
2038         }
2039
2040         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2041                 snd_cs4231_ebus_free(chip);
2042                 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
2043                             dev);
2044                 return -EBUSY;
2045         }
2046         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2047                 snd_cs4231_ebus_free(chip);
2048                 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2049                             dev);
2050                 return -EBUSY;
2051         }
2052
2053         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2054                 snd_cs4231_ebus_free(chip);
2055                 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2056                             dev);
2057                 return -EBUSY;
2058         }
2059         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2060                 snd_cs4231_ebus_free(chip);
2061                 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2062                 return -EBUSY;
2063         }
2064
2065         if (snd_cs4231_probe(chip) < 0) {
2066                 snd_cs4231_ebus_free(chip);
2067                 return -ENODEV;
2068         }
2069         snd_cs4231_init(chip);
2070
2071         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2072                                   chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2073                 snd_cs4231_ebus_free(chip);
2074                 return err;
2075         }
2076
2077         return 0;
2078 }
2079
2080 static int __init cs4231_ebus_attach(struct linux_ebus_device *edev)
2081 {
2082         struct snd_card *card;
2083         int err;
2084
2085         err = cs4231_attach_begin(&card);
2086         if (err)
2087                 return err;
2088
2089         sprintf(card->longname, "%s at 0x%lx, irq %d",
2090                 card->shortname,
2091                 edev->resource[0].start,
2092                 edev->irqs[0]);
2093
2094         err = snd_cs4231_ebus_create(card, edev, dev);
2095         if (err < 0) {
2096                 snd_card_free(card);
2097                 return err;
2098         }
2099
2100         return cs4231_attach_finish(card);
2101 }
2102 #endif
2103
2104 static int __init cs4231_init(void)
2105 {
2106 #ifdef SBUS_SUPPORT
2107         struct sbus_bus *sbus;
2108         struct sbus_dev *sdev;
2109 #endif
2110 #ifdef EBUS_SUPPORT
2111         struct linux_ebus *ebus;
2112         struct linux_ebus_device *edev;
2113 #endif
2114         int found;
2115
2116         found = 0;
2117
2118 #ifdef SBUS_SUPPORT
2119         for_all_sbusdev(sdev, sbus) {
2120                 if (!strcmp(sdev->prom_name, "SUNW,CS4231")) {
2121                         if (cs4231_sbus_attach(sdev) == 0)
2122                                 found++;
2123                 }
2124         }
2125 #endif
2126 #ifdef EBUS_SUPPORT
2127         for_each_ebus(ebus) {
2128                 for_each_ebusdev(edev, ebus) {
2129                         int match = 0;
2130
2131                         if (!strcmp(edev->prom_node->name, "SUNW,CS4231")) {
2132                                 match = 1;
2133                         } else if (!strcmp(edev->prom_node->name, "audio")) {
2134                                 const char *compat;
2135
2136                                 compat = of_get_property(edev->prom_node,
2137                                                          "compatible", NULL);
2138                                 if (compat && !strcmp(compat, "SUNW,CS4231"))
2139                                         match = 1;
2140                         }
2141
2142                         if (match &&
2143                             cs4231_ebus_attach(edev) == 0)
2144                                 found++;
2145                 }
2146         }
2147 #endif
2148
2149
2150         return (found > 0) ? 0 : -EIO;
2151 }
2152
2153 static void __exit cs4231_exit(void)
2154 {
2155         struct snd_cs4231 *p = cs4231_list;
2156
2157         while (p != NULL) {
2158                 struct snd_cs4231 *next = p->next;
2159
2160                 snd_card_free(p->card);
2161
2162                 p = next;
2163         }
2164
2165         cs4231_list = NULL;
2166 }
2167
2168 module_init(cs4231_init);
2169 module_exit(cs4231_exit);