4f515a64e03f2c4491e24e9027931afd61c01581
[sfrench/cifs-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/driver.h>
23 #include <sound/core.h>
24 #include <sound/pcm.h>
25 #include <sound/info.h>
26 #include <sound/control.h>
27 #include <sound/timer.h>
28 #include <sound/initval.h>
29 #include <sound/pcm_params.h>
30
31 #ifdef CONFIG_SBUS
32 #define SBUS_SUPPORT
33 #include <asm/sbus.h>
34 #endif
35
36 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
37 #define EBUS_SUPPORT
38 #include <linux/pci.h>
39 #include <asm/ebus.h>
40 #endif
41
42 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
43 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
44 /* Enable this card */
45 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
46
47 module_param_array(index, int, NULL, 0444);
48 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
49 module_param_array(id, charp, NULL, 0444);
50 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
51 module_param_array(enable, bool, NULL, 0444);
52 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
53 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
54 MODULE_DESCRIPTION("Sun CS4231");
55 MODULE_LICENSE("GPL");
56 MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
57
58 #ifdef SBUS_SUPPORT
59 struct sbus_dma_info {
60        spinlock_t       lock;   /* DMA access lock */
61        int              dir;
62        void __iomem     *regs;
63 };
64 #endif
65
66 struct snd_cs4231;
67 struct cs4231_dma_control {
68         void            (*prepare)(struct cs4231_dma_control *dma_cont,
69                                    int dir);
70         void            (*enable)(struct cs4231_dma_control *dma_cont, int on);
71         int             (*request)(struct cs4231_dma_control *dma_cont,
72                                    dma_addr_t bus_addr, size_t len);
73         unsigned int    (*address)(struct cs4231_dma_control *dma_cont);
74         void            (*preallocate)(struct snd_cs4231 *chip,
75                                        struct snd_pcm *pcm);
76 #ifdef EBUS_SUPPORT
77         struct          ebus_dma_info   ebus_info;
78 #endif
79 #ifdef SBUS_SUPPORT
80         struct          sbus_dma_info   sbus_info;
81 #endif
82 };
83
84 struct snd_cs4231 {
85         spinlock_t              lock;   /* registers access lock */
86         void __iomem            *port;
87
88         struct cs4231_dma_control       p_dma;
89         struct cs4231_dma_control       c_dma;
90
91         u32                     flags;
92 #define CS4231_FLAG_EBUS        0x00000001
93 #define CS4231_FLAG_PLAYBACK    0x00000002
94 #define CS4231_FLAG_CAPTURE     0x00000004
95
96         struct snd_card         *card;
97         struct snd_pcm          *pcm;
98         struct snd_pcm_substream        *playback_substream;
99         unsigned int            p_periods_sent;
100         struct snd_pcm_substream        *capture_substream;
101         unsigned int            c_periods_sent;
102         struct snd_timer        *timer;
103
104         unsigned short mode;
105 #define CS4231_MODE_NONE        0x0000
106 #define CS4231_MODE_PLAY        0x0001
107 #define CS4231_MODE_RECORD      0x0002
108 #define CS4231_MODE_TIMER       0x0004
109 #define CS4231_MODE_OPEN        (CS4231_MODE_PLAY | CS4231_MODE_RECORD | \
110                                  CS4231_MODE_TIMER)
111
112         unsigned char           image[32];      /* registers image */
113         int                     mce_bit;
114         int                     calibrate_mute;
115         struct mutex            mce_mutex;      /* mutex for mce register */
116         struct mutex            open_mutex;     /* mutex for ALSA open/close */
117
118         union {
119 #ifdef SBUS_SUPPORT
120                 struct sbus_dev         *sdev;
121 #endif
122 #ifdef EBUS_SUPPORT
123                 struct pci_dev          *pdev;
124 #endif
125         } dev_u;
126         unsigned int            irq[2];
127         unsigned int            regs_size;
128         struct snd_cs4231       *next;
129 };
130
131 static struct snd_cs4231 *cs4231_list;
132
133 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
134  * now....  -DaveM
135  */
136
137 /* IO ports */
138 #include <sound/cs4231-regs.h>
139
140 /* XXX offsets are different than PC ISA chips... */
141 #define CS4231U(chip, x)        ((chip)->port + ((c_d_c_CS4231##x) << 2))
142
143 /* SBUS DMA register defines.  */
144
145 #define APCCSR  0x10UL  /* APC DMA CSR */
146 #define APCCVA  0x20UL  /* APC Capture DMA Address */
147 #define APCCC   0x24UL  /* APC Capture Count */
148 #define APCCNVA 0x28UL  /* APC Capture DMA Next Address */
149 #define APCCNC  0x2cUL  /* APC Capture Next Count */
150 #define APCPVA  0x30UL  /* APC Play DMA Address */
151 #define APCPC   0x34UL  /* APC Play Count */
152 #define APCPNVA 0x38UL  /* APC Play DMA Next Address */
153 #define APCPNC  0x3cUL  /* APC Play Next Count */
154
155 /* Defines for SBUS DMA-routines */
156
157 #define APCVA  0x0UL    /* APC DMA Address */
158 #define APCC   0x4UL    /* APC Count */
159 #define APCNVA 0x8UL    /* APC DMA Next Address */
160 #define APCNC  0xcUL    /* APC Next Count */
161 #define APC_PLAY 0x30UL /* Play registers start at 0x30 */
162 #define APC_RECORD 0x20UL /* Record registers start at 0x20 */
163
164 /* APCCSR bits */
165
166 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
167 #define APC_PLAY_INT    0x400000 /* Playback interrupt */
168 #define APC_CAPT_INT    0x200000 /* Capture interrupt */
169 #define APC_GENL_INT    0x100000 /* General interrupt */
170 #define APC_XINT_ENA    0x80000  /* General ext int. enable */
171 #define APC_XINT_PLAY   0x40000  /* Playback ext intr */
172 #define APC_XINT_CAPT   0x20000  /* Capture ext intr */
173 #define APC_XINT_GENL   0x10000  /* Error ext intr */
174 #define APC_XINT_EMPT   0x8000   /* Pipe empty interrupt (0 write to pva) */
175 #define APC_XINT_PEMP   0x4000   /* Play pipe empty (pva and pnva not set) */
176 #define APC_XINT_PNVA   0x2000   /* Playback NVA dirty */
177 #define APC_XINT_PENA   0x1000   /* play pipe empty Int enable */
178 #define APC_XINT_COVF   0x800    /* Cap data dropped on floor */
179 #define APC_XINT_CNVA   0x400    /* Capture NVA dirty */
180 #define APC_XINT_CEMP   0x200    /* Capture pipe empty (cva and cnva not set) */
181 #define APC_XINT_CENA   0x100    /* Cap. pipe empty int enable */
182 #define APC_PPAUSE      0x80     /* Pause the play DMA */
183 #define APC_CPAUSE      0x40     /* Pause the capture DMA */
184 #define APC_CDC_RESET   0x20     /* CODEC RESET */
185 #define APC_PDMA_READY  0x08     /* Play DMA Go */
186 #define APC_CDMA_READY  0x04     /* Capture DMA Go */
187 #define APC_CHIP_RESET  0x01     /* Reset the chip */
188
189 /* EBUS DMA register offsets  */
190
191 #define EBDMA_CSR       0x00UL  /* Control/Status */
192 #define EBDMA_ADDR      0x04UL  /* DMA Address */
193 #define EBDMA_COUNT     0x08UL  /* DMA Count */
194
195 /*
196  *  Some variables
197  */
198
199 static unsigned char freq_bits[14] = {
200         /* 5510 */      0x00 | CS4231_XTAL2,
201         /* 6620 */      0x0E | CS4231_XTAL2,
202         /* 8000 */      0x00 | CS4231_XTAL1,
203         /* 9600 */      0x0E | CS4231_XTAL1,
204         /* 11025 */     0x02 | CS4231_XTAL2,
205         /* 16000 */     0x02 | CS4231_XTAL1,
206         /* 18900 */     0x04 | CS4231_XTAL2,
207         /* 22050 */     0x06 | CS4231_XTAL2,
208         /* 27042 */     0x04 | CS4231_XTAL1,
209         /* 32000 */     0x06 | CS4231_XTAL1,
210         /* 33075 */     0x0C | CS4231_XTAL2,
211         /* 37800 */     0x08 | CS4231_XTAL2,
212         /* 44100 */     0x0A | CS4231_XTAL2,
213         /* 48000 */     0x0C | CS4231_XTAL1
214 };
215
216 static unsigned int rates[14] = {
217         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
218         27042, 32000, 33075, 37800, 44100, 48000
219 };
220
221 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
222         .count  = ARRAY_SIZE(rates),
223         .list   = rates,
224 };
225
226 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
227 {
228         return snd_pcm_hw_constraint_list(runtime, 0,
229                                           SNDRV_PCM_HW_PARAM_RATE,
230                                           &hw_constraints_rates);
231 }
232
233 static unsigned char snd_cs4231_original_image[32] =
234 {
235         0x00,                   /* 00/00 - lic */
236         0x00,                   /* 01/01 - ric */
237         0x9f,                   /* 02/02 - la1ic */
238         0x9f,                   /* 03/03 - ra1ic */
239         0x9f,                   /* 04/04 - la2ic */
240         0x9f,                   /* 05/05 - ra2ic */
241         0xbf,                   /* 06/06 - loc */
242         0xbf,                   /* 07/07 - roc */
243         0x20,                   /* 08/08 - pdfr */
244         CS4231_AUTOCALIB,       /* 09/09 - ic */
245         0x00,                   /* 0a/10 - pc */
246         0x00,                   /* 0b/11 - ti */
247         CS4231_MODE2,           /* 0c/12 - mi */
248         0x00,                   /* 0d/13 - lbc */
249         0x00,                   /* 0e/14 - pbru */
250         0x00,                   /* 0f/15 - pbrl */
251         0x80,                   /* 10/16 - afei */
252         0x01,                   /* 11/17 - afeii */
253         0x9f,                   /* 12/18 - llic */
254         0x9f,                   /* 13/19 - rlic */
255         0x00,                   /* 14/20 - tlb */
256         0x00,                   /* 15/21 - thb */
257         0x00,                   /* 16/22 - la3mic/reserved */
258         0x00,                   /* 17/23 - ra3mic/reserved */
259         0x00,                   /* 18/24 - afs */
260         0x00,                   /* 19/25 - lamoc/version */
261         0x00,                   /* 1a/26 - mioc */
262         0x00,                   /* 1b/27 - ramoc/reserved */
263         0x20,                   /* 1c/28 - cdfr */
264         0x00,                   /* 1d/29 - res4 */
265         0x00,                   /* 1e/30 - cbru */
266         0x00,                   /* 1f/31 - cbrl */
267 };
268
269 static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
270 {
271 #ifdef EBUS_SUPPORT
272         if (cp->flags & CS4231_FLAG_EBUS)
273                 return readb(reg_addr);
274         else
275 #endif
276 #ifdef SBUS_SUPPORT
277                 return sbus_readb(reg_addr);
278 #endif
279 }
280
281 static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val,
282                             void __iomem *reg_addr)
283 {
284 #ifdef EBUS_SUPPORT
285         if (cp->flags & CS4231_FLAG_EBUS)
286                 return writeb(val, reg_addr);
287         else
288 #endif
289 #ifdef SBUS_SUPPORT
290                 return sbus_writeb(val, reg_addr);
291 #endif
292 }
293
294 /*
295  *  Basic I/O functions
296  */
297
298 static void snd_cs4231_ready(struct snd_cs4231 *chip)
299 {
300         int timeout;
301
302         for (timeout = 250; timeout > 0; timeout--) {
303                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
304                 if ((val & CS4231_INIT) == 0)
305                         break;
306                 udelay(100);
307         }
308 }
309
310 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
311                             unsigned char value)
312 {
313         snd_cs4231_ready(chip);
314 #ifdef CONFIG_SND_DEBUG
315         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
316                 snd_printdd("out: auto calibration time out - reg = 0x%x, "
317                             "value = 0x%x\n",
318                             reg, value);
319 #endif
320         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
321         wmb();
322         __cs4231_writeb(chip, value, CS4231U(chip, REG));
323         mb();
324 }
325
326 static inline void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
327                      unsigned char mask, unsigned char value)
328 {
329         unsigned char tmp = (chip->image[reg] & mask) | value;
330
331         chip->image[reg] = tmp;
332         if (!chip->calibrate_mute)
333                 snd_cs4231_dout(chip, reg, tmp);
334 }
335
336 static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg,
337                            unsigned char value)
338 {
339         snd_cs4231_dout(chip, reg, value);
340         chip->image[reg] = value;
341         mb();
342 }
343
344 static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
345 {
346         snd_cs4231_ready(chip);
347 #ifdef CONFIG_SND_DEBUG
348         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
349                 snd_printdd("in: auto calibration time out - reg = 0x%x\n",
350                             reg);
351 #endif
352         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
353         mb();
354         return __cs4231_readb(chip, CS4231U(chip, REG));
355 }
356
357 /*
358  *  CS4231 detection / MCE routines
359  */
360
361 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
362 {
363         int timeout;
364
365         /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
366         for (timeout = 5; timeout > 0; timeout--)
367                 __cs4231_readb(chip, CS4231U(chip, REGSEL));
368
369         /* end of cleanup sequence */
370         for (timeout = 500; timeout > 0; timeout--) {
371                 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
372                 if ((val & CS4231_INIT) == 0)
373                         break;
374                 msleep(1);
375         }
376 }
377
378 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
379 {
380         unsigned long flags;
381         int timeout;
382
383         spin_lock_irqsave(&chip->lock, flags);
384         snd_cs4231_ready(chip);
385 #ifdef CONFIG_SND_DEBUG
386         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
387                 snd_printdd("mce_up - auto calibration time out (0)\n");
388 #endif
389         chip->mce_bit |= CS4231_MCE;
390         timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
391         if (timeout == 0x80)
392                 snd_printdd("mce_up [%p]: serious init problem - "
393                             "codec still busy\n",
394                             chip->port);
395         if (!(timeout & CS4231_MCE))
396                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
397                                 CS4231U(chip, REGSEL));
398         spin_unlock_irqrestore(&chip->lock, flags);
399 }
400
401 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
402 {
403         unsigned long flags;
404         int timeout;
405
406         spin_lock_irqsave(&chip->lock, flags);
407         snd_cs4231_busy_wait(chip);
408 #ifdef CONFIG_SND_DEBUG
409         if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
410                 snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
411                             CS4231U(chip, REGSEL));
412 #endif
413         chip->mce_bit &= ~CS4231_MCE;
414         timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
415         __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
416                         CS4231U(chip, REGSEL));
417         if (timeout == 0x80)
418                 snd_printdd("mce_down [%p]: serious init problem - "
419                             "codec still busy\n",
420                             chip->port);
421         if ((timeout & CS4231_MCE) == 0) {
422                 spin_unlock_irqrestore(&chip->lock, flags);
423                 return;
424         }
425         snd_cs4231_busy_wait(chip);
426
427         /* calibration process */
428
429         snd_cs4231_ready(chip);
430         snd_cs4231_ready(chip);
431         timeout = snd_cs4231_in(chip, CS4231_TEST_INIT);
432         if ((timeout & CS4231_CALIB_IN_PROGRESS) == 0) {
433                 snd_printd("cs4231_mce_down - auto calibration time out (1)\n");
434                 spin_unlock_irqrestore(&chip->lock, flags);
435                 return;
436         }
437
438         /* in 10ms increments, check condition, up to 250ms */
439         timeout = 25;
440         while (snd_cs4231_in(chip, CS4231_TEST_INIT) &
441                 CS4231_CALIB_IN_PROGRESS) {
442
443                 spin_unlock_irqrestore(&chip->lock, flags);
444                 if (--timeout < 0) {
445                         snd_printk("mce_down - "
446                                    "auto calibration time out (2)\n");
447                         return;
448                 }
449                 msleep(10);
450                 spin_lock_irqsave(&chip->lock, flags);
451         }
452
453         /* in 10ms increments, check condition, up to 100ms */
454         timeout = 10;
455         while (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT) {
456                 spin_unlock_irqrestore(&chip->lock, flags);
457                 if (--timeout < 0) {
458                         snd_printk("mce_down - "
459                                    "auto calibration time out (3)\n");
460                         return;
461                 }
462                 msleep(10);
463                 spin_lock_irqsave(&chip->lock, flags);
464         }
465         spin_unlock_irqrestore(&chip->lock, flags);
466 }
467
468 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
469                                    struct snd_pcm_substream *substream,
470                                    unsigned int *periods_sent)
471 {
472         struct snd_pcm_runtime *runtime = substream->runtime;
473
474         while (1) {
475                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
476                 unsigned int offset = period_size * (*periods_sent);
477
478                 BUG_ON(period_size >= (1 << 24));
479
480                 if (dma_cont->request(dma_cont,
481                                       runtime->dma_addr + offset, period_size))
482                         return;
483                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
484         }
485 }
486
487 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
488                                unsigned int what, int on)
489 {
490         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
491         struct cs4231_dma_control *dma_cont;
492
493         if (what & CS4231_PLAYBACK_ENABLE) {
494                 dma_cont = &chip->p_dma;
495                 if (on) {
496                         dma_cont->prepare(dma_cont, 0);
497                         dma_cont->enable(dma_cont, 1);
498                         snd_cs4231_advance_dma(dma_cont,
499                                 chip->playback_substream,
500                                 &chip->p_periods_sent);
501                 } else {
502                         dma_cont->enable(dma_cont, 0);
503                 }
504         }
505         if (what & CS4231_RECORD_ENABLE) {
506                 dma_cont = &chip->c_dma;
507                 if (on) {
508                         dma_cont->prepare(dma_cont, 1);
509                         dma_cont->enable(dma_cont, 1);
510                         snd_cs4231_advance_dma(dma_cont,
511                                 chip->capture_substream,
512                                 &chip->c_periods_sent);
513                 } else {
514                         dma_cont->enable(dma_cont, 0);
515                 }
516         }
517 }
518
519 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
520 {
521         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
522         int result = 0;
523
524         switch (cmd) {
525         case SNDRV_PCM_TRIGGER_START:
526         case SNDRV_PCM_TRIGGER_STOP:
527         {
528                 unsigned int what = 0;
529                 struct snd_pcm_substream *s;
530                 unsigned long flags;
531
532                 snd_pcm_group_for_each_entry(s, substream) {
533                         if (s == chip->playback_substream) {
534                                 what |= CS4231_PLAYBACK_ENABLE;
535                                 snd_pcm_trigger_done(s, substream);
536                         } else if (s == chip->capture_substream) {
537                                 what |= CS4231_RECORD_ENABLE;
538                                 snd_pcm_trigger_done(s, substream);
539                         }
540                 }
541
542                 spin_lock_irqsave(&chip->lock, flags);
543                 if (cmd == SNDRV_PCM_TRIGGER_START) {
544                         cs4231_dma_trigger(substream, what, 1);
545                         chip->image[CS4231_IFACE_CTRL] |= what;
546                 } else {
547                         cs4231_dma_trigger(substream, what, 0);
548                         chip->image[CS4231_IFACE_CTRL] &= ~what;
549                 }
550                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
551                                chip->image[CS4231_IFACE_CTRL]);
552                 spin_unlock_irqrestore(&chip->lock, flags);
553                 break;
554         }
555         default:
556                 result = -EINVAL;
557                 break;
558         }
559
560         return result;
561 }
562
563 /*
564  *  CODEC I/O
565  */
566
567 static unsigned char snd_cs4231_get_rate(unsigned int rate)
568 {
569         int i;
570
571         for (i = 0; i < 14; i++)
572                 if (rate == rates[i])
573                         return freq_bits[i];
574
575         return freq_bits[13];
576 }
577
578 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
579                                            int channels)
580 {
581         unsigned char rformat;
582
583         rformat = CS4231_LINEAR_8;
584         switch (format) {
585         case SNDRV_PCM_FORMAT_MU_LAW:
586                 rformat = CS4231_ULAW_8;
587                 break;
588         case SNDRV_PCM_FORMAT_A_LAW:
589                 rformat = CS4231_ALAW_8;
590                 break;
591         case SNDRV_PCM_FORMAT_S16_LE:
592                 rformat = CS4231_LINEAR_16;
593                 break;
594         case SNDRV_PCM_FORMAT_S16_BE:
595                 rformat = CS4231_LINEAR_16_BIG;
596                 break;
597         case SNDRV_PCM_FORMAT_IMA_ADPCM:
598                 rformat = CS4231_ADPCM_16;
599                 break;
600         }
601         if (channels > 1)
602                 rformat |= CS4231_STEREO;
603         return rformat;
604 }
605
606 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
607 {
608         unsigned long flags;
609
610         mute = mute ? 1 : 0;
611         spin_lock_irqsave(&chip->lock, flags);
612         if (chip->calibrate_mute == mute) {
613                 spin_unlock_irqrestore(&chip->lock, flags);
614                 return;
615         }
616         if (!mute) {
617                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
618                                 chip->image[CS4231_LEFT_INPUT]);
619                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
620                                 chip->image[CS4231_RIGHT_INPUT]);
621                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
622                                 chip->image[CS4231_LOOPBACK]);
623         }
624         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
625                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
626         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
627                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
628         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
629                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
630         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
631                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
632         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
633                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
634         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
635                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
636         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
637                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
638         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
639                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
640         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
641                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
642         chip->calibrate_mute = mute;
643         spin_unlock_irqrestore(&chip->lock, flags);
644 }
645
646 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
647                                        struct snd_pcm_hw_params *params,
648                                        unsigned char pdfr)
649 {
650         unsigned long flags;
651
652         mutex_lock(&chip->mce_mutex);
653         snd_cs4231_calibrate_mute(chip, 1);
654
655         snd_cs4231_mce_up(chip);
656
657         spin_lock_irqsave(&chip->lock, flags);
658         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
659                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
660                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
661                        pdfr);
662         spin_unlock_irqrestore(&chip->lock, flags);
663
664         snd_cs4231_mce_down(chip);
665
666         snd_cs4231_calibrate_mute(chip, 0);
667         mutex_unlock(&chip->mce_mutex);
668 }
669
670 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
671                                       struct snd_pcm_hw_params *params,
672                                       unsigned char cdfr)
673 {
674         unsigned long flags;
675
676         mutex_lock(&chip->mce_mutex);
677         snd_cs4231_calibrate_mute(chip, 1);
678
679         snd_cs4231_mce_up(chip);
680
681         spin_lock_irqsave(&chip->lock, flags);
682         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
683                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
684                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
685                                (cdfr & 0x0f));
686                 spin_unlock_irqrestore(&chip->lock, flags);
687                 snd_cs4231_mce_down(chip);
688                 snd_cs4231_mce_up(chip);
689                 spin_lock_irqsave(&chip->lock, flags);
690         }
691         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
692         spin_unlock_irqrestore(&chip->lock, flags);
693
694         snd_cs4231_mce_down(chip);
695
696         snd_cs4231_calibrate_mute(chip, 0);
697         mutex_unlock(&chip->mce_mutex);
698 }
699
700 /*
701  *  Timer interface
702  */
703
704 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
705 {
706         struct snd_cs4231 *chip = snd_timer_chip(timer);
707
708         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
709 }
710
711 static int snd_cs4231_timer_start(struct snd_timer *timer)
712 {
713         unsigned long flags;
714         unsigned int ticks;
715         struct snd_cs4231 *chip = snd_timer_chip(timer);
716
717         spin_lock_irqsave(&chip->lock, flags);
718         ticks = timer->sticks;
719         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
720             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
721             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
722                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
723                                chip->image[CS4231_TIMER_HIGH] =
724                                (unsigned char) (ticks >> 8));
725                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
726                                chip->image[CS4231_TIMER_LOW] =
727                                (unsigned char) ticks);
728                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
729                                chip->image[CS4231_ALT_FEATURE_1] |
730                                         CS4231_TIMER_ENABLE);
731         }
732         spin_unlock_irqrestore(&chip->lock, flags);
733
734         return 0;
735 }
736
737 static int snd_cs4231_timer_stop(struct snd_timer *timer)
738 {
739         unsigned long flags;
740         struct snd_cs4231 *chip = snd_timer_chip(timer);
741
742         spin_lock_irqsave(&chip->lock, flags);
743         chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
744         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
745                        chip->image[CS4231_ALT_FEATURE_1]);
746         spin_unlock_irqrestore(&chip->lock, flags);
747
748         return 0;
749 }
750
751 static void __init snd_cs4231_init(struct snd_cs4231 *chip)
752 {
753         unsigned long flags;
754
755         snd_cs4231_mce_down(chip);
756
757 #ifdef SNDRV_DEBUG_MCE
758         snd_printdd("init: (1)\n");
759 #endif
760         snd_cs4231_mce_up(chip);
761         spin_lock_irqsave(&chip->lock, flags);
762         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
763                                             CS4231_PLAYBACK_PIO |
764                                             CS4231_RECORD_ENABLE |
765                                             CS4231_RECORD_PIO |
766                                             CS4231_CALIB_MODE);
767         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
768         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
769         spin_unlock_irqrestore(&chip->lock, flags);
770         snd_cs4231_mce_down(chip);
771
772 #ifdef SNDRV_DEBUG_MCE
773         snd_printdd("init: (2)\n");
774 #endif
775
776         snd_cs4231_mce_up(chip);
777         spin_lock_irqsave(&chip->lock, flags);
778         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
779                         chip->image[CS4231_ALT_FEATURE_1]);
780         spin_unlock_irqrestore(&chip->lock, flags);
781         snd_cs4231_mce_down(chip);
782
783 #ifdef SNDRV_DEBUG_MCE
784         snd_printdd("init: (3) - afei = 0x%x\n",
785                     chip->image[CS4231_ALT_FEATURE_1]);
786 #endif
787
788         spin_lock_irqsave(&chip->lock, flags);
789         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
790                         chip->image[CS4231_ALT_FEATURE_2]);
791         spin_unlock_irqrestore(&chip->lock, flags);
792
793         snd_cs4231_mce_up(chip);
794         spin_lock_irqsave(&chip->lock, flags);
795         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
796                         chip->image[CS4231_PLAYBK_FORMAT]);
797         spin_unlock_irqrestore(&chip->lock, flags);
798         snd_cs4231_mce_down(chip);
799
800 #ifdef SNDRV_DEBUG_MCE
801         snd_printdd("init: (4)\n");
802 #endif
803
804         snd_cs4231_mce_up(chip);
805         spin_lock_irqsave(&chip->lock, flags);
806         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
807         spin_unlock_irqrestore(&chip->lock, flags);
808         snd_cs4231_mce_down(chip);
809
810 #ifdef SNDRV_DEBUG_MCE
811         snd_printdd("init: (5)\n");
812 #endif
813 }
814
815 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
816 {
817         unsigned long flags;
818
819         mutex_lock(&chip->open_mutex);
820         if ((chip->mode & mode)) {
821                 mutex_unlock(&chip->open_mutex);
822                 return -EAGAIN;
823         }
824         if (chip->mode & CS4231_MODE_OPEN) {
825                 chip->mode |= mode;
826                 mutex_unlock(&chip->open_mutex);
827                 return 0;
828         }
829         /* ok. now enable and ack CODEC IRQ */
830         spin_lock_irqsave(&chip->lock, flags);
831         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
832                        CS4231_RECORD_IRQ |
833                        CS4231_TIMER_IRQ);
834         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
835         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
836         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
837
838         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
839                        CS4231_RECORD_IRQ |
840                        CS4231_TIMER_IRQ);
841         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
842
843         spin_unlock_irqrestore(&chip->lock, flags);
844
845         chip->mode = mode;
846         mutex_unlock(&chip->open_mutex);
847         return 0;
848 }
849
850 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
851 {
852         unsigned long flags;
853
854         mutex_lock(&chip->open_mutex);
855         chip->mode &= ~mode;
856         if (chip->mode & CS4231_MODE_OPEN) {
857                 mutex_unlock(&chip->open_mutex);
858                 return;
859         }
860         snd_cs4231_calibrate_mute(chip, 1);
861
862         /* disable IRQ */
863         spin_lock_irqsave(&chip->lock, flags);
864         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
865         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
866         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
867
868         /* now disable record & playback */
869
870         if (chip->image[CS4231_IFACE_CTRL] &
871             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
872              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
873                 spin_unlock_irqrestore(&chip->lock, flags);
874                 snd_cs4231_mce_up(chip);
875                 spin_lock_irqsave(&chip->lock, flags);
876                 chip->image[CS4231_IFACE_CTRL] &=
877                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
878                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
879                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
880                                 chip->image[CS4231_IFACE_CTRL]);
881                 spin_unlock_irqrestore(&chip->lock, flags);
882                 snd_cs4231_mce_down(chip);
883                 spin_lock_irqsave(&chip->lock, flags);
884         }
885
886         /* clear IRQ again */
887         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
888         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
889         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));        /* clear IRQ */
890         spin_unlock_irqrestore(&chip->lock, flags);
891
892         snd_cs4231_calibrate_mute(chip, 0);
893
894         chip->mode = 0;
895         mutex_unlock(&chip->open_mutex);
896 }
897
898 /*
899  *  timer open/close
900  */
901
902 static int snd_cs4231_timer_open(struct snd_timer *timer)
903 {
904         struct snd_cs4231 *chip = snd_timer_chip(timer);
905         snd_cs4231_open(chip, CS4231_MODE_TIMER);
906         return 0;
907 }
908
909 static int snd_cs4231_timer_close(struct snd_timer *timer)
910 {
911         struct snd_cs4231 *chip = snd_timer_chip(timer);
912         snd_cs4231_close(chip, CS4231_MODE_TIMER);
913         return 0;
914 }
915
916 static struct snd_timer_hardware snd_cs4231_timer_table = {
917         .flags          =       SNDRV_TIMER_HW_AUTO,
918         .resolution     =       9945,
919         .ticks          =       65535,
920         .open           =       snd_cs4231_timer_open,
921         .close          =       snd_cs4231_timer_close,
922         .c_resolution   =       snd_cs4231_timer_resolution,
923         .start          =       snd_cs4231_timer_start,
924         .stop           =       snd_cs4231_timer_stop,
925 };
926
927 /*
928  *  ok.. exported functions..
929  */
930
931 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
932                                          struct snd_pcm_hw_params *hw_params)
933 {
934         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
935         unsigned char new_pdfr;
936         int err;
937
938         err = snd_pcm_lib_malloc_pages(substream,
939                                         params_buffer_bytes(hw_params));
940         if (err < 0)
941                 return err;
942         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
943                                          params_channels(hw_params)) |
944                 snd_cs4231_get_rate(params_rate(hw_params));
945         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
946
947         return 0;
948 }
949
950 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
951 {
952         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
953         struct snd_pcm_runtime *runtime = substream->runtime;
954         unsigned long flags;
955
956         spin_lock_irqsave(&chip->lock, flags);
957
958         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
959                                             CS4231_PLAYBACK_PIO);
960
961         BUG_ON(runtime->period_size > 0xffff + 1);
962
963         chip->p_periods_sent = 0;
964         spin_unlock_irqrestore(&chip->lock, flags);
965
966         return 0;
967 }
968
969 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
970                                         struct snd_pcm_hw_params *hw_params)
971 {
972         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
973         unsigned char new_cdfr;
974         int err;
975
976         err = snd_pcm_lib_malloc_pages(substream,
977                                         params_buffer_bytes(hw_params));
978         if (err < 0)
979                 return err;
980         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
981                                          params_channels(hw_params)) |
982                 snd_cs4231_get_rate(params_rate(hw_params));
983         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
984
985         return 0;
986 }
987
988 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
989 {
990         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
991         unsigned long flags;
992
993         spin_lock_irqsave(&chip->lock, flags);
994         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
995                                             CS4231_RECORD_PIO);
996
997
998         chip->c_periods_sent = 0;
999         spin_unlock_irqrestore(&chip->lock, flags);
1000
1001         return 0;
1002 }
1003
1004 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
1005 {
1006         unsigned long flags;
1007         unsigned char res;
1008
1009         spin_lock_irqsave(&chip->lock, flags);
1010         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
1011         spin_unlock_irqrestore(&chip->lock, flags);
1012
1013         /* detect overrange only above 0dB; may be user selectable? */
1014         if (res & (0x08 | 0x02))
1015                 chip->capture_substream->runtime->overrange++;
1016 }
1017
1018 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
1019 {
1020         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
1021                 snd_pcm_period_elapsed(chip->playback_substream);
1022                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
1023                                             &chip->p_periods_sent);
1024         }
1025 }
1026
1027 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
1028 {
1029         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
1030                 snd_pcm_period_elapsed(chip->capture_substream);
1031                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
1032                                             &chip->c_periods_sent);
1033         }
1034 }
1035
1036 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
1037                                         struct snd_pcm_substream *substream)
1038 {
1039         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1040         struct cs4231_dma_control *dma_cont = &chip->p_dma;
1041         size_t ptr;
1042
1043         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1044                 return 0;
1045         ptr = dma_cont->address(dma_cont);
1046         if (ptr != 0)
1047                 ptr -= substream->runtime->dma_addr;
1048
1049         return bytes_to_frames(substream->runtime, ptr);
1050 }
1051
1052 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1053                                         struct snd_pcm_substream *substream)
1054 {
1055         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1056         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1057         size_t ptr;
1058
1059         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1060                 return 0;
1061         ptr = dma_cont->address(dma_cont);
1062         if (ptr != 0)
1063                 ptr -= substream->runtime->dma_addr;
1064
1065         return bytes_to_frames(substream->runtime, ptr);
1066 }
1067
1068 static int __init snd_cs4231_probe(struct snd_cs4231 *chip)
1069 {
1070         unsigned long flags;
1071         int i;
1072         int id = 0;
1073         int vers = 0;
1074         unsigned char *ptr;
1075
1076         for (i = 0; i < 50; i++) {
1077                 mb();
1078                 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1079                         msleep(2);
1080                 else {
1081                         spin_lock_irqsave(&chip->lock, flags);
1082                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1083                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1084                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1085                         spin_unlock_irqrestore(&chip->lock, flags);
1086                         if (id == 0x0a)
1087                                 break;  /* this is valid value */
1088                 }
1089         }
1090         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1091         if (id != 0x0a)
1092                 return -ENODEV; /* no valid device found */
1093
1094         spin_lock_irqsave(&chip->lock, flags);
1095
1096         /* clear any pendings IRQ */
1097         __cs4231_readb(chip, CS4231U(chip, STATUS));
1098         __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1099         mb();
1100
1101         spin_unlock_irqrestore(&chip->lock, flags);
1102
1103         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1104         chip->image[CS4231_IFACE_CTRL] =
1105                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1106         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1107         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1108         if (vers & 0x20)
1109                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1110
1111         ptr = (unsigned char *) &chip->image;
1112
1113         snd_cs4231_mce_down(chip);
1114
1115         spin_lock_irqsave(&chip->lock, flags);
1116
1117         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1118                 snd_cs4231_out(chip, i, *ptr++);
1119
1120         spin_unlock_irqrestore(&chip->lock, flags);
1121
1122         snd_cs4231_mce_up(chip);
1123
1124         snd_cs4231_mce_down(chip);
1125
1126         mdelay(2);
1127
1128         return 0;               /* all things are ok.. */
1129 }
1130
1131 static struct snd_pcm_hardware snd_cs4231_playback = {
1132         .info                   = SNDRV_PCM_INFO_MMAP |
1133                                   SNDRV_PCM_INFO_INTERLEAVED |
1134                                   SNDRV_PCM_INFO_MMAP_VALID |
1135                                   SNDRV_PCM_INFO_SYNC_START,
1136         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1137                                   SNDRV_PCM_FMTBIT_A_LAW |
1138                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1139                                   SNDRV_PCM_FMTBIT_U8 |
1140                                   SNDRV_PCM_FMTBIT_S16_LE |
1141                                   SNDRV_PCM_FMTBIT_S16_BE,
1142         .rates                  = SNDRV_PCM_RATE_KNOT |
1143                                   SNDRV_PCM_RATE_8000_48000,
1144         .rate_min               = 5510,
1145         .rate_max               = 48000,
1146         .channels_min           = 1,
1147         .channels_max           = 2,
1148         .buffer_bytes_max       = 32 * 1024,
1149         .period_bytes_min       = 64,
1150         .period_bytes_max       = 32 * 1024,
1151         .periods_min            = 1,
1152         .periods_max            = 1024,
1153 };
1154
1155 static struct snd_pcm_hardware snd_cs4231_capture = {
1156         .info                   = SNDRV_PCM_INFO_MMAP |
1157                                   SNDRV_PCM_INFO_INTERLEAVED |
1158                                   SNDRV_PCM_INFO_MMAP_VALID |
1159                                   SNDRV_PCM_INFO_SYNC_START,
1160         .formats                = SNDRV_PCM_FMTBIT_MU_LAW |
1161                                   SNDRV_PCM_FMTBIT_A_LAW |
1162                                   SNDRV_PCM_FMTBIT_IMA_ADPCM |
1163                                   SNDRV_PCM_FMTBIT_U8 |
1164                                   SNDRV_PCM_FMTBIT_S16_LE |
1165                                   SNDRV_PCM_FMTBIT_S16_BE,
1166         .rates                  = SNDRV_PCM_RATE_KNOT |
1167                                   SNDRV_PCM_RATE_8000_48000,
1168         .rate_min               = 5510,
1169         .rate_max               = 48000,
1170         .channels_min           = 1,
1171         .channels_max           = 2,
1172         .buffer_bytes_max       = 32 * 1024,
1173         .period_bytes_min       = 64,
1174         .period_bytes_max       = 32 * 1024,
1175         .periods_min            = 1,
1176         .periods_max            = 1024,
1177 };
1178
1179 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1180 {
1181         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1182         struct snd_pcm_runtime *runtime = substream->runtime;
1183         int err;
1184
1185         runtime->hw = snd_cs4231_playback;
1186
1187         err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1188         if (err < 0) {
1189                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1190                 return err;
1191         }
1192         chip->playback_substream = substream;
1193         chip->p_periods_sent = 0;
1194         snd_pcm_set_sync(substream);
1195         snd_cs4231_xrate(runtime);
1196
1197         return 0;
1198 }
1199
1200 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1201 {
1202         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1203         struct snd_pcm_runtime *runtime = substream->runtime;
1204         int err;
1205
1206         runtime->hw = snd_cs4231_capture;
1207
1208         err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1209         if (err < 0) {
1210                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1211                 return err;
1212         }
1213         chip->capture_substream = substream;
1214         chip->c_periods_sent = 0;
1215         snd_pcm_set_sync(substream);
1216         snd_cs4231_xrate(runtime);
1217
1218         return 0;
1219 }
1220
1221 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1222 {
1223         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1224
1225         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1226         chip->playback_substream = NULL;
1227
1228         return 0;
1229 }
1230
1231 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1232 {
1233         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1234
1235         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1236         chip->capture_substream = NULL;
1237
1238         return 0;
1239 }
1240
1241 /* XXX We can do some power-management, in particular on EBUS using
1242  * XXX the audio AUXIO register...
1243  */
1244
1245 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1246         .open           =       snd_cs4231_playback_open,
1247         .close          =       snd_cs4231_playback_close,
1248         .ioctl          =       snd_pcm_lib_ioctl,
1249         .hw_params      =       snd_cs4231_playback_hw_params,
1250         .hw_free        =       snd_pcm_lib_free_pages,
1251         .prepare        =       snd_cs4231_playback_prepare,
1252         .trigger        =       snd_cs4231_trigger,
1253         .pointer        =       snd_cs4231_playback_pointer,
1254 };
1255
1256 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1257         .open           =       snd_cs4231_capture_open,
1258         .close          =       snd_cs4231_capture_close,
1259         .ioctl          =       snd_pcm_lib_ioctl,
1260         .hw_params      =       snd_cs4231_capture_hw_params,
1261         .hw_free        =       snd_pcm_lib_free_pages,
1262         .prepare        =       snd_cs4231_capture_prepare,
1263         .trigger        =       snd_cs4231_trigger,
1264         .pointer        =       snd_cs4231_capture_pointer,
1265 };
1266
1267 static int __init snd_cs4231_pcm(struct snd_card *card)
1268 {
1269         struct snd_cs4231 *chip = card->private_data;
1270         struct snd_pcm *pcm;
1271         int err;
1272
1273         err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1274         if (err < 0)
1275                 return err;
1276
1277         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1278                         &snd_cs4231_playback_ops);
1279         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1280                         &snd_cs4231_capture_ops);
1281
1282         /* global setup */
1283         pcm->private_data = chip;
1284         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1285         strcpy(pcm->name, "CS4231");
1286
1287         chip->p_dma.preallocate(chip, pcm);
1288
1289         chip->pcm = pcm;
1290
1291         return 0;
1292 }
1293
1294 static int __init snd_cs4231_timer(struct snd_card *card)
1295 {
1296         struct snd_cs4231 *chip = card->private_data;
1297         struct snd_timer *timer;
1298         struct snd_timer_id tid;
1299         int err;
1300
1301         /* Timer initialization */
1302         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1303         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1304         tid.card = card->number;
1305         tid.device = 0;
1306         tid.subdevice = 0;
1307         err = snd_timer_new(card, "CS4231", &tid, &timer);
1308         if (err < 0)
1309                 return err;
1310         strcpy(timer->name, "CS4231");
1311         timer->private_data = chip;
1312         timer->hw = snd_cs4231_timer_table;
1313         chip->timer = timer;
1314
1315         return 0;
1316 }
1317
1318 /*
1319  *  MIXER part
1320  */
1321
1322 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1323                                struct snd_ctl_elem_info *uinfo)
1324 {
1325         static char *texts[4] = {
1326                 "Line", "CD", "Mic", "Mix"
1327         };
1328
1329         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1330         uinfo->count = 2;
1331         uinfo->value.enumerated.items = 4;
1332         if (uinfo->value.enumerated.item > 3)
1333                 uinfo->value.enumerated.item = 3;
1334         strcpy(uinfo->value.enumerated.name,
1335                 texts[uinfo->value.enumerated.item]);
1336
1337         return 0;
1338 }
1339
1340 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1341                               struct snd_ctl_elem_value *ucontrol)
1342 {
1343         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1344         unsigned long flags;
1345
1346         spin_lock_irqsave(&chip->lock, flags);
1347         ucontrol->value.enumerated.item[0] =
1348                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1349         ucontrol->value.enumerated.item[1] =
1350                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1351         spin_unlock_irqrestore(&chip->lock, flags);
1352
1353         return 0;
1354 }
1355
1356 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1357                               struct snd_ctl_elem_value *ucontrol)
1358 {
1359         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1360         unsigned long flags;
1361         unsigned short left, right;
1362         int change;
1363
1364         if (ucontrol->value.enumerated.item[0] > 3 ||
1365             ucontrol->value.enumerated.item[1] > 3)
1366                 return -EINVAL;
1367         left = ucontrol->value.enumerated.item[0] << 6;
1368         right = ucontrol->value.enumerated.item[1] << 6;
1369
1370         spin_lock_irqsave(&chip->lock, flags);
1371
1372         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1373         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1374         change = left != chip->image[CS4231_LEFT_INPUT] ||
1375                  right != chip->image[CS4231_RIGHT_INPUT];
1376         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1377         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1378
1379         spin_unlock_irqrestore(&chip->lock, flags);
1380
1381         return change;
1382 }
1383
1384 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1385                                   struct snd_ctl_elem_info *uinfo)
1386 {
1387         int mask = (kcontrol->private_value >> 16) & 0xff;
1388
1389         uinfo->type = (mask == 1) ?
1390                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1391         uinfo->count = 1;
1392         uinfo->value.integer.min = 0;
1393         uinfo->value.integer.max = mask;
1394
1395         return 0;
1396 }
1397
1398 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1399                                  struct snd_ctl_elem_value *ucontrol)
1400 {
1401         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1402         unsigned long flags;
1403         int reg = kcontrol->private_value & 0xff;
1404         int shift = (kcontrol->private_value >> 8) & 0xff;
1405         int mask = (kcontrol->private_value >> 16) & 0xff;
1406         int invert = (kcontrol->private_value >> 24) & 0xff;
1407
1408         spin_lock_irqsave(&chip->lock, flags);
1409
1410         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1411
1412         spin_unlock_irqrestore(&chip->lock, flags);
1413
1414         if (invert)
1415                 ucontrol->value.integer.value[0] =
1416                         (mask - ucontrol->value.integer.value[0]);
1417
1418         return 0;
1419 }
1420
1421 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1422                                  struct snd_ctl_elem_value *ucontrol)
1423 {
1424         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1425         unsigned long flags;
1426         int reg = kcontrol->private_value & 0xff;
1427         int shift = (kcontrol->private_value >> 8) & 0xff;
1428         int mask = (kcontrol->private_value >> 16) & 0xff;
1429         int invert = (kcontrol->private_value >> 24) & 0xff;
1430         int change;
1431         unsigned short val;
1432
1433         val = (ucontrol->value.integer.value[0] & mask);
1434         if (invert)
1435                 val = mask - val;
1436         val <<= shift;
1437
1438         spin_lock_irqsave(&chip->lock, flags);
1439
1440         val = (chip->image[reg] & ~(mask << shift)) | val;
1441         change = val != chip->image[reg];
1442         snd_cs4231_out(chip, reg, val);
1443
1444         spin_unlock_irqrestore(&chip->lock, flags);
1445
1446         return change;
1447 }
1448
1449 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1450                                   struct snd_ctl_elem_info *uinfo)
1451 {
1452         int mask = (kcontrol->private_value >> 24) & 0xff;
1453
1454         uinfo->type = mask == 1 ?
1455                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1456         uinfo->count = 2;
1457         uinfo->value.integer.min = 0;
1458         uinfo->value.integer.max = mask;
1459
1460         return 0;
1461 }
1462
1463 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1464                                  struct snd_ctl_elem_value *ucontrol)
1465 {
1466         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1467         unsigned long flags;
1468         int left_reg = kcontrol->private_value & 0xff;
1469         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1470         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1471         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1472         int mask = (kcontrol->private_value >> 24) & 0xff;
1473         int invert = (kcontrol->private_value >> 22) & 1;
1474
1475         spin_lock_irqsave(&chip->lock, flags);
1476
1477         ucontrol->value.integer.value[0] =
1478                 (chip->image[left_reg] >> shift_left) & mask;
1479         ucontrol->value.integer.value[1] =
1480                 (chip->image[right_reg] >> shift_right) & mask;
1481
1482         spin_unlock_irqrestore(&chip->lock, flags);
1483
1484         if (invert) {
1485                 ucontrol->value.integer.value[0] =
1486                         (mask - ucontrol->value.integer.value[0]);
1487                 ucontrol->value.integer.value[1] =
1488                         (mask - ucontrol->value.integer.value[1]);
1489         }
1490
1491         return 0;
1492 }
1493
1494 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1495                                  struct snd_ctl_elem_value *ucontrol)
1496 {
1497         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1498         unsigned long flags;
1499         int left_reg = kcontrol->private_value & 0xff;
1500         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1501         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1502         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1503         int mask = (kcontrol->private_value >> 24) & 0xff;
1504         int invert = (kcontrol->private_value >> 22) & 1;
1505         int change;
1506         unsigned short val1, val2;
1507
1508         val1 = ucontrol->value.integer.value[0] & mask;
1509         val2 = ucontrol->value.integer.value[1] & mask;
1510         if (invert) {
1511                 val1 = mask - val1;
1512                 val2 = mask - val2;
1513         }
1514         val1 <<= shift_left;
1515         val2 <<= shift_right;
1516
1517         spin_lock_irqsave(&chip->lock, flags);
1518
1519         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1520         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1521         change = val1 != chip->image[left_reg];
1522         change |= val2 != chip->image[right_reg];
1523         snd_cs4231_out(chip, left_reg, val1);
1524         snd_cs4231_out(chip, right_reg, val2);
1525
1526         spin_unlock_irqrestore(&chip->lock, flags);
1527
1528         return change;
1529 }
1530
1531 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1532 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1533   .info = snd_cs4231_info_single,       \
1534   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,   \
1535   .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1536
1537 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1538                         shift_right, mask, invert) \
1539 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1540   .info = snd_cs4231_info_double,       \
1541   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,   \
1542   .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1543                    ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1544
1545 static struct snd_kcontrol_new snd_cs4231_controls[] __initdata = {
1546 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1547                 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1548 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1549                 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1550 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1551                 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1552 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1553                 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1554 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1555                 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1556 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1557                 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1558 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1559                 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1560 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1561                 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1562 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1563 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1564 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1565 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1566 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1567                 15, 0),
1568 {
1569         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1570         .name   = "Capture Source",
1571         .info   = snd_cs4231_info_mux,
1572         .get    = snd_cs4231_get_mux,
1573         .put    = snd_cs4231_put_mux,
1574 },
1575 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1576                 1, 0),
1577 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1578 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1579 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1580 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1581 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1582 };
1583
1584 static int __init snd_cs4231_mixer(struct snd_card *card)
1585 {
1586         struct snd_cs4231 *chip = card->private_data;
1587         int err, idx;
1588
1589         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1590
1591         strcpy(card->mixername, chip->pcm->name);
1592
1593         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1594                 err = snd_ctl_add(card,
1595                                  snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1596                 if (err < 0)
1597                         return err;
1598         }
1599         return 0;
1600 }
1601
1602 static int dev;
1603
1604 static int __init cs4231_attach_begin(struct snd_card **rcard)
1605 {
1606         struct snd_card *card;
1607         struct snd_cs4231 *chip;
1608
1609         *rcard = NULL;
1610
1611         if (dev >= SNDRV_CARDS)
1612                 return -ENODEV;
1613
1614         if (!enable[dev]) {
1615                 dev++;
1616                 return -ENOENT;
1617         }
1618
1619         card = snd_card_new(index[dev], id[dev], THIS_MODULE,
1620                             sizeof(struct snd_cs4231));
1621         if (card == NULL)
1622                 return -ENOMEM;
1623
1624         strcpy(card->driver, "CS4231");
1625         strcpy(card->shortname, "Sun CS4231");
1626
1627         chip = card->private_data;
1628         chip->card = card;
1629
1630         *rcard = card;
1631         return 0;
1632 }
1633
1634 static int __init cs4231_attach_finish(struct snd_card *card)
1635 {
1636         struct snd_cs4231 *chip = card->private_data;
1637         int err;
1638
1639         err = snd_cs4231_pcm(card);
1640         if (err < 0)
1641                 goto out_err;
1642
1643         err = snd_cs4231_mixer(card);
1644         if (err < 0)
1645                 goto out_err;
1646
1647         err = snd_cs4231_timer(card);
1648         if (err < 0)
1649                 goto out_err;
1650
1651         err = snd_card_register(card);
1652         if (err < 0)
1653                 goto out_err;
1654
1655         chip->next = cs4231_list;
1656         cs4231_list = chip;
1657
1658         dev++;
1659         return 0;
1660
1661 out_err:
1662         snd_card_free(card);
1663         return err;
1664 }
1665
1666 #ifdef SBUS_SUPPORT
1667
1668 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1669 {
1670         unsigned long flags;
1671         unsigned char status;
1672         u32 csr;
1673         struct snd_cs4231 *chip = dev_id;
1674
1675         /*This is IRQ is not raised by the cs4231*/
1676         if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1677                 return IRQ_NONE;
1678
1679         /* ACK the APC interrupt. */
1680         csr = sbus_readl(chip->port + APCCSR);
1681
1682         sbus_writel(csr, chip->port + APCCSR);
1683
1684         if ((csr & APC_PDMA_READY) &&
1685             (csr & APC_PLAY_INT) &&
1686             (csr & APC_XINT_PNVA) &&
1687             !(csr & APC_XINT_EMPT))
1688                         snd_cs4231_play_callback(chip);
1689
1690         if ((csr & APC_CDMA_READY) &&
1691             (csr & APC_CAPT_INT) &&
1692             (csr & APC_XINT_CNVA) &&
1693             !(csr & APC_XINT_EMPT))
1694                         snd_cs4231_capture_callback(chip);
1695
1696         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1697
1698         if (status & CS4231_TIMER_IRQ) {
1699                 if (chip->timer)
1700                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1701         }
1702
1703         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1704                 snd_cs4231_overrange(chip);
1705
1706         /* ACK the CS4231 interrupt. */
1707         spin_lock_irqsave(&chip->lock, flags);
1708         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1709         spin_unlock_irqrestore(&chip->lock, flags);
1710
1711         return IRQ_HANDLED;
1712 }
1713
1714 /*
1715  * SBUS DMA routines
1716  */
1717
1718 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1719                             dma_addr_t bus_addr, size_t len)
1720 {
1721         unsigned long flags;
1722         u32 test, csr;
1723         int err;
1724         struct sbus_dma_info *base = &dma_cont->sbus_info;
1725
1726         if (len >= (1 << 24))
1727                 return -EINVAL;
1728         spin_lock_irqsave(&base->lock, flags);
1729         csr = sbus_readl(base->regs + APCCSR);
1730         err = -EINVAL;
1731         test = APC_CDMA_READY;
1732         if (base->dir == APC_PLAY)
1733                 test = APC_PDMA_READY;
1734         if (!(csr & test))
1735                 goto out;
1736         err = -EBUSY;
1737         test = APC_XINT_CNVA;
1738         if (base->dir == APC_PLAY)
1739                 test = APC_XINT_PNVA;
1740         if (!(csr & test))
1741                 goto out;
1742         err = 0;
1743         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1744         sbus_writel(len, base->regs + base->dir + APCNC);
1745 out:
1746         spin_unlock_irqrestore(&base->lock, flags);
1747         return err;
1748 }
1749
1750 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1751 {
1752         unsigned long flags;
1753         u32 csr, test;
1754         struct sbus_dma_info *base = &dma_cont->sbus_info;
1755
1756         spin_lock_irqsave(&base->lock, flags);
1757         csr = sbus_readl(base->regs + APCCSR);
1758         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1759                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1760                  APC_XINT_PENA;
1761         if (base->dir == APC_RECORD)
1762                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1763                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1764         csr |= test;
1765         sbus_writel(csr, base->regs + APCCSR);
1766         spin_unlock_irqrestore(&base->lock, flags);
1767 }
1768
1769 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1770 {
1771         unsigned long flags;
1772         u32 csr, shift;
1773         struct sbus_dma_info *base = &dma_cont->sbus_info;
1774
1775         spin_lock_irqsave(&base->lock, flags);
1776         if (!on) {
1777                 sbus_writel(0, base->regs + base->dir + APCNC);
1778                 sbus_writel(0, base->regs + base->dir + APCNVA);
1779                 if (base->dir == APC_PLAY) {
1780                         sbus_writel(0, base->regs + base->dir + APCC);
1781                         sbus_writel(0, base->regs + base->dir + APCVA);
1782                 }
1783
1784                 udelay(1200);
1785         }
1786         csr = sbus_readl(base->regs + APCCSR);
1787         shift = 0;
1788         if (base->dir == APC_PLAY)
1789                 shift = 1;
1790         if (on)
1791                 csr &= ~(APC_CPAUSE << shift);
1792         else
1793                 csr |= (APC_CPAUSE << shift);
1794         sbus_writel(csr, base->regs + APCCSR);
1795         if (on)
1796                 csr |= (APC_CDMA_READY << shift);
1797         else
1798                 csr &= ~(APC_CDMA_READY << shift);
1799         sbus_writel(csr, base->regs + APCCSR);
1800
1801         spin_unlock_irqrestore(&base->lock, flags);
1802 }
1803
1804 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1805 {
1806         struct sbus_dma_info *base = &dma_cont->sbus_info;
1807
1808         return sbus_readl(base->regs + base->dir + APCVA);
1809 }
1810
1811 static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1812 {
1813         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
1814                                         snd_dma_sbus_data(chip->dev_u.sdev),
1815                                         64 * 1024, 128 * 1024);
1816 }
1817
1818 /*
1819  * Init and exit routines
1820  */
1821
1822 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1823 {
1824         if (chip->irq[0])
1825                 free_irq(chip->irq[0], chip);
1826
1827         if (chip->port)
1828                 sbus_iounmap(chip->port, chip->regs_size);
1829
1830         return 0;
1831 }
1832
1833 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1834 {
1835         struct snd_cs4231 *cp = device->device_data;
1836
1837         return snd_cs4231_sbus_free(cp);
1838 }
1839
1840 static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1841         .dev_free       =       snd_cs4231_sbus_dev_free,
1842 };
1843
1844 static int __init snd_cs4231_sbus_create(struct snd_card *card,
1845                                          struct sbus_dev *sdev,
1846                                          int dev)
1847 {
1848         struct snd_cs4231 *chip = card->private_data;
1849         int err;
1850
1851         spin_lock_init(&chip->lock);
1852         spin_lock_init(&chip->c_dma.sbus_info.lock);
1853         spin_lock_init(&chip->p_dma.sbus_info.lock);
1854         mutex_init(&chip->mce_mutex);
1855         mutex_init(&chip->open_mutex);
1856         chip->dev_u.sdev = sdev;
1857         chip->regs_size = sdev->reg_addrs[0].reg_size;
1858         memcpy(&chip->image, &snd_cs4231_original_image,
1859                sizeof(snd_cs4231_original_image));
1860
1861         chip->port = sbus_ioremap(&sdev->resource[0], 0,
1862                                   chip->regs_size, "cs4231");
1863         if (!chip->port) {
1864                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1865                 return -EIO;
1866         }
1867
1868         chip->c_dma.sbus_info.regs = chip->port;
1869         chip->p_dma.sbus_info.regs = chip->port;
1870         chip->c_dma.sbus_info.dir = APC_RECORD;
1871         chip->p_dma.sbus_info.dir = APC_PLAY;
1872
1873         chip->p_dma.prepare = sbus_dma_prepare;
1874         chip->p_dma.enable = sbus_dma_enable;
1875         chip->p_dma.request = sbus_dma_request;
1876         chip->p_dma.address = sbus_dma_addr;
1877         chip->p_dma.preallocate = sbus_dma_preallocate;
1878
1879         chip->c_dma.prepare = sbus_dma_prepare;
1880         chip->c_dma.enable = sbus_dma_enable;
1881         chip->c_dma.request = sbus_dma_request;
1882         chip->c_dma.address = sbus_dma_addr;
1883         chip->c_dma.preallocate = sbus_dma_preallocate;
1884
1885         if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
1886                         IRQF_SHARED, "cs4231", chip)) {
1887                 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1888                             dev, sdev->irqs[0]);
1889                 snd_cs4231_sbus_free(chip);
1890                 return -EBUSY;
1891         }
1892         chip->irq[0] = sdev->irqs[0];
1893
1894         if (snd_cs4231_probe(chip) < 0) {
1895                 snd_cs4231_sbus_free(chip);
1896                 return -ENODEV;
1897         }
1898         snd_cs4231_init(chip);
1899
1900         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1901                                   chip, &snd_cs4231_sbus_dev_ops)) < 0) {
1902                 snd_cs4231_sbus_free(chip);
1903                 return err;
1904         }
1905
1906         return 0;
1907 }
1908
1909 static int __init cs4231_sbus_attach(struct sbus_dev *sdev)
1910 {
1911         struct resource *rp = &sdev->resource[0];
1912         struct snd_card *card;
1913         int err;
1914
1915         err = cs4231_attach_begin(&card);
1916         if (err)
1917                 return err;
1918
1919         sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1920                 card->shortname,
1921                 rp->flags & 0xffL,
1922                 (unsigned long long)rp->start,
1923                 sdev->irqs[0]);
1924
1925         err = snd_cs4231_sbus_create(card, sdev, dev);
1926         if (err < 0) {
1927                 snd_card_free(card);
1928                 return err;
1929         }
1930
1931         return cs4231_attach_finish(card);
1932 }
1933 #endif
1934
1935 #ifdef EBUS_SUPPORT
1936
1937 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1938                                           void *cookie)
1939 {
1940         struct snd_cs4231 *chip = cookie;
1941
1942         snd_cs4231_play_callback(chip);
1943 }
1944
1945 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1946                                              int event, void *cookie)
1947 {
1948         struct snd_cs4231 *chip = cookie;
1949
1950         snd_cs4231_capture_callback(chip);
1951 }
1952
1953 /*
1954  * EBUS DMA wrappers
1955  */
1956
1957 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1958                              dma_addr_t bus_addr, size_t len)
1959 {
1960         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1961 }
1962
1963 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1964 {
1965         ebus_dma_enable(&dma_cont->ebus_info, on);
1966 }
1967
1968 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1969 {
1970         ebus_dma_prepare(&dma_cont->ebus_info, dir);
1971 }
1972
1973 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1974 {
1975         return ebus_dma_addr(&dma_cont->ebus_info);
1976 }
1977
1978 static void _ebus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1979 {
1980         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1981                                       snd_dma_pci_data(chip->dev_u.pdev),
1982                                       64*1024, 128*1024);
1983 }
1984
1985 /*
1986  * Init and exit routines
1987  */
1988
1989 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1990 {
1991         if (chip->c_dma.ebus_info.regs) {
1992                 ebus_dma_unregister(&chip->c_dma.ebus_info);
1993                 iounmap(chip->c_dma.ebus_info.regs);
1994         }
1995         if (chip->p_dma.ebus_info.regs) {
1996                 ebus_dma_unregister(&chip->p_dma.ebus_info);
1997                 iounmap(chip->p_dma.ebus_info.regs);
1998         }
1999
2000         if (chip->port)
2001                 iounmap(chip->port);
2002
2003         return 0;
2004 }
2005
2006 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
2007 {
2008         struct snd_cs4231 *cp = device->device_data;
2009
2010         return snd_cs4231_ebus_free(cp);
2011 }
2012
2013 static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
2014         .dev_free       =       snd_cs4231_ebus_dev_free,
2015 };
2016
2017 static int __init snd_cs4231_ebus_create(struct snd_card *card,
2018                                          struct linux_ebus_device *edev,
2019                                          int dev)
2020 {
2021         struct snd_cs4231 *chip = card->private_data;
2022         int err;
2023
2024         spin_lock_init(&chip->lock);
2025         spin_lock_init(&chip->c_dma.ebus_info.lock);
2026         spin_lock_init(&chip->p_dma.ebus_info.lock);
2027         mutex_init(&chip->mce_mutex);
2028         mutex_init(&chip->open_mutex);
2029         chip->flags |= CS4231_FLAG_EBUS;
2030         chip->dev_u.pdev = edev->bus->self;
2031         memcpy(&chip->image, &snd_cs4231_original_image,
2032                sizeof(snd_cs4231_original_image));
2033         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
2034         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2035         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
2036         chip->c_dma.ebus_info.client_cookie = chip;
2037         chip->c_dma.ebus_info.irq = edev->irqs[0];
2038         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
2039         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2040         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
2041         chip->p_dma.ebus_info.client_cookie = chip;
2042         chip->p_dma.ebus_info.irq = edev->irqs[1];
2043
2044         chip->p_dma.prepare = _ebus_dma_prepare;
2045         chip->p_dma.enable = _ebus_dma_enable;
2046         chip->p_dma.request = _ebus_dma_request;
2047         chip->p_dma.address = _ebus_dma_addr;
2048         chip->p_dma.preallocate = _ebus_dma_preallocate;
2049
2050         chip->c_dma.prepare = _ebus_dma_prepare;
2051         chip->c_dma.enable = _ebus_dma_enable;
2052         chip->c_dma.request = _ebus_dma_request;
2053         chip->c_dma.address = _ebus_dma_addr;
2054         chip->c_dma.preallocate = _ebus_dma_preallocate;
2055
2056         chip->port = ioremap(edev->resource[0].start, 0x10);
2057         chip->p_dma.ebus_info.regs = ioremap(edev->resource[1].start, 0x10);
2058         chip->c_dma.ebus_info.regs = ioremap(edev->resource[2].start, 0x10);
2059         if (!chip->port || !chip->p_dma.ebus_info.regs ||
2060             !chip->c_dma.ebus_info.regs) {
2061                 snd_cs4231_ebus_free(chip);
2062                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2063                 return -EIO;
2064         }
2065
2066         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2067                 snd_cs4231_ebus_free(chip);
2068                 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
2069                             dev);
2070                 return -EBUSY;
2071         }
2072         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2073                 snd_cs4231_ebus_free(chip);
2074                 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2075                             dev);
2076                 return -EBUSY;
2077         }
2078
2079         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2080                 snd_cs4231_ebus_free(chip);
2081                 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2082                             dev);
2083                 return -EBUSY;
2084         }
2085         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2086                 snd_cs4231_ebus_free(chip);
2087                 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2088                 return -EBUSY;
2089         }
2090
2091         if (snd_cs4231_probe(chip) < 0) {
2092                 snd_cs4231_ebus_free(chip);
2093                 return -ENODEV;
2094         }
2095         snd_cs4231_init(chip);
2096
2097         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2098                                   chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2099                 snd_cs4231_ebus_free(chip);
2100                 return err;
2101         }
2102
2103         return 0;
2104 }
2105
2106 static int __init cs4231_ebus_attach(struct linux_ebus_device *edev)
2107 {
2108         struct snd_card *card;
2109         int err;
2110
2111         err = cs4231_attach_begin(&card);
2112         if (err)
2113                 return err;
2114
2115         sprintf(card->longname, "%s at 0x%lx, irq %d",
2116                 card->shortname,
2117                 edev->resource[0].start,
2118                 edev->irqs[0]);
2119
2120         err = snd_cs4231_ebus_create(card, edev, dev);
2121         if (err < 0) {
2122                 snd_card_free(card);
2123                 return err;
2124         }
2125
2126         return cs4231_attach_finish(card);
2127 }
2128 #endif
2129
2130 static int __init cs4231_init(void)
2131 {
2132 #ifdef SBUS_SUPPORT
2133         struct sbus_bus *sbus;
2134         struct sbus_dev *sdev;
2135 #endif
2136 #ifdef EBUS_SUPPORT
2137         struct linux_ebus *ebus;
2138         struct linux_ebus_device *edev;
2139 #endif
2140         int found;
2141
2142         found = 0;
2143
2144 #ifdef SBUS_SUPPORT
2145         for_all_sbusdev(sdev, sbus) {
2146                 if (!strcmp(sdev->prom_name, "SUNW,CS4231")) {
2147                         if (cs4231_sbus_attach(sdev) == 0)
2148                                 found++;
2149                 }
2150         }
2151 #endif
2152 #ifdef EBUS_SUPPORT
2153         for_each_ebus(ebus) {
2154                 for_each_ebusdev(edev, ebus) {
2155                         int match = 0;
2156
2157                         if (!strcmp(edev->prom_node->name, "SUNW,CS4231")) {
2158                                 match = 1;
2159                         } else if (!strcmp(edev->prom_node->name, "audio")) {
2160                                 const char *compat;
2161
2162                                 compat = of_get_property(edev->prom_node,
2163                                                          "compatible", NULL);
2164                                 if (compat && !strcmp(compat, "SUNW,CS4231"))
2165                                         match = 1;
2166                         }
2167
2168                         if (match &&
2169                             cs4231_ebus_attach(edev) == 0)
2170                                 found++;
2171                 }
2172         }
2173 #endif
2174
2175
2176         return (found > 0) ? 0 : -EIO;
2177 }
2178
2179 static void __exit cs4231_exit(void)
2180 {
2181         struct snd_cs4231 *p = cs4231_list;
2182
2183         while (p != NULL) {
2184                 struct snd_cs4231 *next = p->next;
2185
2186                 snd_card_free(p->card);
2187
2188                 p = next;
2189         }
2190
2191         cs4231_list = NULL;
2192 }
2193
2194 module_init(cs4231_init);
2195 module_exit(cs4231_exit);