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fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / sound / sparc / cs4231.c
blob9785382a5f39fc6b6f125adc00600eb0432cc101
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 unsigned long end_time;
405 int timeout;
406
407 spin_lock_irqsave(&chip->lock, flags);
408 snd_cs4231_busy_wait(chip);
409 #ifdef CONFIG_SND_DEBUG
410 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
411 snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
412 CS4231U(chip, REGSEL));
413 #endif
414 chip->mce_bit &= ~CS4231_MCE;
415 timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
416 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
417 CS4231U(chip, REGSEL));
418 if (timeout == 0x80)
419 snd_printdd("mce_down [%p]: serious init problem - "
420 "codec still busy\n",
421 chip->port);
422 if ((timeout & CS4231_MCE) == 0) {
423 spin_unlock_irqrestore(&chip->lock, flags);
424 return;
425 }
426
427 /*
428 * Wait for (possible -- during init auto-calibration may not be set)
429 * calibration process to start. Needs upto 5 sample periods on AD1848
430 * which at the slowest possible rate of 5.5125 kHz means 907 us.
431 */
432 msleep(1);
433
434 /* check condition up to 250ms */
435 end_time = jiffies + msecs_to_jiffies(250);
436 while (snd_cs4231_in(chip, CS4231_TEST_INIT) &
437 CS4231_CALIB_IN_PROGRESS) {
438
439 spin_unlock_irqrestore(&chip->lock, flags);
440 if (time_after(jiffies, end_time)) {
441 snd_printk("mce_down - "
442 "auto calibration time out (2)\n");
443 return;
444 }
445 msleep(1);
446 spin_lock_irqsave(&chip->lock, flags);
447 }
448
449 /* check condition up to 100ms */
450 end_time = jiffies + msecs_to_jiffies(100);
451 while (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT) {
452 spin_unlock_irqrestore(&chip->lock, flags);
453 if (time_after(jiffies, end_time)) {
454 snd_printk("mce_down - "
455 "auto calibration time out (3)\n");
456 return;
457 }
458 msleep(1);
459 spin_lock_irqsave(&chip->lock, flags);
460 }
461 spin_unlock_irqrestore(&chip->lock, flags);
462 }
463
464 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
465 struct snd_pcm_substream *substream,
466 unsigned int *periods_sent)
467 {
468 struct snd_pcm_runtime *runtime = substream->runtime;
469
470 while (1) {
471 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
472 unsigned int offset = period_size * (*periods_sent);
473
474 BUG_ON(period_size >= (1 << 24));
475
476 if (dma_cont->request(dma_cont,
477 runtime->dma_addr + offset, period_size))
478 return;
479 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
480 }
481 }
482
483 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
484 unsigned int what, int on)
485 {
486 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
487 struct cs4231_dma_control *dma_cont;
488
489 if (what & CS4231_PLAYBACK_ENABLE) {
490 dma_cont = &chip->p_dma;
491 if (on) {
492 dma_cont->prepare(dma_cont, 0);
493 dma_cont->enable(dma_cont, 1);
494 snd_cs4231_advance_dma(dma_cont,
495 chip->playback_substream,
496 &chip->p_periods_sent);
497 } else {
498 dma_cont->enable(dma_cont, 0);
499 }
500 }
501 if (what & CS4231_RECORD_ENABLE) {
502 dma_cont = &chip->c_dma;
503 if (on) {
504 dma_cont->prepare(dma_cont, 1);
505 dma_cont->enable(dma_cont, 1);
506 snd_cs4231_advance_dma(dma_cont,
507 chip->capture_substream,
508 &chip->c_periods_sent);
509 } else {
510 dma_cont->enable(dma_cont, 0);
511 }
512 }
513 }
514
515 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
516 {
517 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
518 int result = 0;
519
520 switch (cmd) {
521 case SNDRV_PCM_TRIGGER_START:
522 case SNDRV_PCM_TRIGGER_STOP:
523 {
524 unsigned int what = 0;
525 struct snd_pcm_substream *s;
526 unsigned long flags;
527
528 snd_pcm_group_for_each_entry(s, substream) {
529 if (s == chip->playback_substream) {
530 what |= CS4231_PLAYBACK_ENABLE;
531 snd_pcm_trigger_done(s, substream);
532 } else if (s == chip->capture_substream) {
533 what |= CS4231_RECORD_ENABLE;
534 snd_pcm_trigger_done(s, substream);
535 }
536 }
537
538 spin_lock_irqsave(&chip->lock, flags);
539 if (cmd == SNDRV_PCM_TRIGGER_START) {
540 cs4231_dma_trigger(substream, what, 1);
541 chip->image[CS4231_IFACE_CTRL] |= what;
542 } else {
543 cs4231_dma_trigger(substream, what, 0);
544 chip->image[CS4231_IFACE_CTRL] &= ~what;
545 }
546 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
547 chip->image[CS4231_IFACE_CTRL]);
548 spin_unlock_irqrestore(&chip->lock, flags);
549 break;
550 }
551 default:
552 result = -EINVAL;
553 break;
554 }
555
556 return result;
557 }
558
559 /*
560 * CODEC I/O
561 */
562
563 static unsigned char snd_cs4231_get_rate(unsigned int rate)
564 {
565 int i;
566
567 for (i = 0; i < 14; i++)
568 if (rate == rates[i])
569 return freq_bits[i];
570
571 return freq_bits[13];
572 }
573
574 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
575 int channels)
576 {
577 unsigned char rformat;
578
579 rformat = CS4231_LINEAR_8;
580 switch (format) {
581 case SNDRV_PCM_FORMAT_MU_LAW:
582 rformat = CS4231_ULAW_8;
583 break;
584 case SNDRV_PCM_FORMAT_A_LAW:
585 rformat = CS4231_ALAW_8;
586 break;
587 case SNDRV_PCM_FORMAT_S16_LE:
588 rformat = CS4231_LINEAR_16;
589 break;
590 case SNDRV_PCM_FORMAT_S16_BE:
591 rformat = CS4231_LINEAR_16_BIG;
592 break;
593 case SNDRV_PCM_FORMAT_IMA_ADPCM:
594 rformat = CS4231_ADPCM_16;
595 break;
596 }
597 if (channels > 1)
598 rformat |= CS4231_STEREO;
599 return rformat;
600 }
601
602 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
603 {
604 unsigned long flags;
605
606 mute = mute ? 1 : 0;
607 spin_lock_irqsave(&chip->lock, flags);
608 if (chip->calibrate_mute == mute) {
609 spin_unlock_irqrestore(&chip->lock, flags);
610 return;
611 }
612 if (!mute) {
613 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
614 chip->image[CS4231_LEFT_INPUT]);
615 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
616 chip->image[CS4231_RIGHT_INPUT]);
617 snd_cs4231_dout(chip, CS4231_LOOPBACK,
618 chip->image[CS4231_LOOPBACK]);
619 }
620 snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
621 mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
622 snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
623 mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
624 snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
625 mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
626 snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
627 mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
628 snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
629 mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
630 snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
631 mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
632 snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
633 mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
634 snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
635 mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
636 snd_cs4231_dout(chip, CS4231_MONO_CTRL,
637 mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
638 chip->calibrate_mute = mute;
639 spin_unlock_irqrestore(&chip->lock, flags);
640 }
641
642 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
643 struct snd_pcm_hw_params *params,
644 unsigned char pdfr)
645 {
646 unsigned long flags;
647
648 mutex_lock(&chip->mce_mutex);
649 snd_cs4231_calibrate_mute(chip, 1);
650
651 snd_cs4231_mce_up(chip);
652
653 spin_lock_irqsave(&chip->lock, flags);
654 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
655 (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
656 (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
657 pdfr);
658 spin_unlock_irqrestore(&chip->lock, flags);
659
660 snd_cs4231_mce_down(chip);
661
662 snd_cs4231_calibrate_mute(chip, 0);
663 mutex_unlock(&chip->mce_mutex);
664 }
665
666 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
667 struct snd_pcm_hw_params *params,
668 unsigned char cdfr)
669 {
670 unsigned long flags;
671
672 mutex_lock(&chip->mce_mutex);
673 snd_cs4231_calibrate_mute(chip, 1);
674
675 snd_cs4231_mce_up(chip);
676
677 spin_lock_irqsave(&chip->lock, flags);
678 if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
679 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
680 ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
681 (cdfr & 0x0f));
682 spin_unlock_irqrestore(&chip->lock, flags);
683 snd_cs4231_mce_down(chip);
684 snd_cs4231_mce_up(chip);
685 spin_lock_irqsave(&chip->lock, flags);
686 }
687 snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
688 spin_unlock_irqrestore(&chip->lock, flags);
689
690 snd_cs4231_mce_down(chip);
691
692 snd_cs4231_calibrate_mute(chip, 0);
693 mutex_unlock(&chip->mce_mutex);
694 }
695
696 /*
697 * Timer interface
698 */
699
700 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
701 {
702 struct snd_cs4231 *chip = snd_timer_chip(timer);
703
704 return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
705 }
706
707 static int snd_cs4231_timer_start(struct snd_timer *timer)
708 {
709 unsigned long flags;
710 unsigned int ticks;
711 struct snd_cs4231 *chip = snd_timer_chip(timer);
712
713 spin_lock_irqsave(&chip->lock, flags);
714 ticks = timer->sticks;
715 if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
716 (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
717 (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
718 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
719 chip->image[CS4231_TIMER_HIGH] =
720 (unsigned char) (ticks >> 8));
721 snd_cs4231_out(chip, CS4231_TIMER_LOW,
722 chip->image[CS4231_TIMER_LOW] =
723 (unsigned char) ticks);
724 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
725 chip->image[CS4231_ALT_FEATURE_1] |
726 CS4231_TIMER_ENABLE);
727 }
728 spin_unlock_irqrestore(&chip->lock, flags);
729
730 return 0;
731 }
732
733 static int snd_cs4231_timer_stop(struct snd_timer *timer)
734 {
735 unsigned long flags;
736 struct snd_cs4231 *chip = snd_timer_chip(timer);
737
738 spin_lock_irqsave(&chip->lock, flags);
739 chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
740 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
741 chip->image[CS4231_ALT_FEATURE_1]);
742 spin_unlock_irqrestore(&chip->lock, flags);
743
744 return 0;
745 }
746
747 static void __init snd_cs4231_init(struct snd_cs4231 *chip)
748 {
749 unsigned long flags;
750
751 snd_cs4231_mce_down(chip);
752
753 #ifdef SNDRV_DEBUG_MCE
754 snd_printdd("init: (1)\n");
755 #endif
756 snd_cs4231_mce_up(chip);
757 spin_lock_irqsave(&chip->lock, flags);
758 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
759 CS4231_PLAYBACK_PIO |
760 CS4231_RECORD_ENABLE |
761 CS4231_RECORD_PIO |
762 CS4231_CALIB_MODE);
763 chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
764 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
765 spin_unlock_irqrestore(&chip->lock, flags);
766 snd_cs4231_mce_down(chip);
767
768 #ifdef SNDRV_DEBUG_MCE
769 snd_printdd("init: (2)\n");
770 #endif
771
772 snd_cs4231_mce_up(chip);
773 spin_lock_irqsave(&chip->lock, flags);
774 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
775 chip->image[CS4231_ALT_FEATURE_1]);
776 spin_unlock_irqrestore(&chip->lock, flags);
777 snd_cs4231_mce_down(chip);
778
779 #ifdef SNDRV_DEBUG_MCE
780 snd_printdd("init: (3) - afei = 0x%x\n",
781 chip->image[CS4231_ALT_FEATURE_1]);
782 #endif
783
784 spin_lock_irqsave(&chip->lock, flags);
785 snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
786 chip->image[CS4231_ALT_FEATURE_2]);
787 spin_unlock_irqrestore(&chip->lock, flags);
788
789 snd_cs4231_mce_up(chip);
790 spin_lock_irqsave(&chip->lock, flags);
791 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
792 chip->image[CS4231_PLAYBK_FORMAT]);
793 spin_unlock_irqrestore(&chip->lock, flags);
794 snd_cs4231_mce_down(chip);
795
796 #ifdef SNDRV_DEBUG_MCE
797 snd_printdd("init: (4)\n");
798 #endif
799
800 snd_cs4231_mce_up(chip);
801 spin_lock_irqsave(&chip->lock, flags);
802 snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
803 spin_unlock_irqrestore(&chip->lock, flags);
804 snd_cs4231_mce_down(chip);
805
806 #ifdef SNDRV_DEBUG_MCE
807 snd_printdd("init: (5)\n");
808 #endif
809 }
810
811 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
812 {
813 unsigned long flags;
814
815 mutex_lock(&chip->open_mutex);
816 if ((chip->mode & mode)) {
817 mutex_unlock(&chip->open_mutex);
818 return -EAGAIN;
819 }
820 if (chip->mode & CS4231_MODE_OPEN) {
821 chip->mode |= mode;
822 mutex_unlock(&chip->open_mutex);
823 return 0;
824 }
825 /* ok. now enable and ack CODEC IRQ */
826 spin_lock_irqsave(&chip->lock, flags);
827 snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
828 CS4231_RECORD_IRQ |
829 CS4231_TIMER_IRQ);
830 snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
831 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
832 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
833
834 snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
835 CS4231_RECORD_IRQ |
836 CS4231_TIMER_IRQ);
837 snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
838
839 spin_unlock_irqrestore(&chip->lock, flags);
840
841 chip->mode = mode;
842 mutex_unlock(&chip->open_mutex);
843 return 0;
844 }
845
846 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
847 {
848 unsigned long flags;
849
850 mutex_lock(&chip->open_mutex);
851 chip->mode &= ~mode;
852 if (chip->mode & CS4231_MODE_OPEN) {
853 mutex_unlock(&chip->open_mutex);
854 return;
855 }
856 snd_cs4231_calibrate_mute(chip, 1);
857
858 /* disable IRQ */
859 spin_lock_irqsave(&chip->lock, flags);
860 snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
861 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
862 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
863
864 /* now disable record & playback */
865
866 if (chip->image[CS4231_IFACE_CTRL] &
867 (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
868 CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
869 spin_unlock_irqrestore(&chip->lock, flags);
870 snd_cs4231_mce_up(chip);
871 spin_lock_irqsave(&chip->lock, flags);
872 chip->image[CS4231_IFACE_CTRL] &=
873 ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
874 CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
875 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
876 chip->image[CS4231_IFACE_CTRL]);
877 spin_unlock_irqrestore(&chip->lock, flags);
878 snd_cs4231_mce_down(chip);
879 spin_lock_irqsave(&chip->lock, flags);
880 }
881
882 /* clear IRQ again */
883 snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
884 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
885 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
886 spin_unlock_irqrestore(&chip->lock, flags);
887
888 snd_cs4231_calibrate_mute(chip, 0);
889
890 chip->mode = 0;
891 mutex_unlock(&chip->open_mutex);
892 }
893
894 /*
895 * timer open/close
896 */
897
898 static int snd_cs4231_timer_open(struct snd_timer *timer)
899 {
900 struct snd_cs4231 *chip = snd_timer_chip(timer);
901 snd_cs4231_open(chip, CS4231_MODE_TIMER);
902 return 0;
903 }
904
905 static int snd_cs4231_timer_close(struct snd_timer *timer)
906 {
907 struct snd_cs4231 *chip = snd_timer_chip(timer);
908 snd_cs4231_close(chip, CS4231_MODE_TIMER);
909 return 0;
910 }
911
912 static struct snd_timer_hardware snd_cs4231_timer_table = {
913 .flags = SNDRV_TIMER_HW_AUTO,
914 .resolution = 9945,
915 .ticks = 65535,
916 .open = snd_cs4231_timer_open,
917 .close = snd_cs4231_timer_close,
918 .c_resolution = snd_cs4231_timer_resolution,
919 .start = snd_cs4231_timer_start,
920 .stop = snd_cs4231_timer_stop,
921 };
922
923 /*
924 * ok.. exported functions..
925 */
926
927 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
928 struct snd_pcm_hw_params *hw_params)
929 {
930 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
931 unsigned char new_pdfr;
932 int err;
933
934 err = snd_pcm_lib_malloc_pages(substream,
935 params_buffer_bytes(hw_params));
936 if (err < 0)
937 return err;
938 new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
939 params_channels(hw_params)) |
940 snd_cs4231_get_rate(params_rate(hw_params));
941 snd_cs4231_playback_format(chip, hw_params, new_pdfr);
942
943 return 0;
944 }
945
946 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
947 {
948 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
949 struct snd_pcm_runtime *runtime = substream->runtime;
950 unsigned long flags;
951
952 spin_lock_irqsave(&chip->lock, flags);
953
954 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
955 CS4231_PLAYBACK_PIO);
956
957 BUG_ON(runtime->period_size > 0xffff + 1);
958
959 chip->p_periods_sent = 0;
960 spin_unlock_irqrestore(&chip->lock, flags);
961
962 return 0;
963 }
964
965 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
966 struct snd_pcm_hw_params *hw_params)
967 {
968 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
969 unsigned char new_cdfr;
970 int err;
971
972 err = snd_pcm_lib_malloc_pages(substream,
973 params_buffer_bytes(hw_params));
974 if (err < 0)
975 return err;
976 new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
977 params_channels(hw_params)) |
978 snd_cs4231_get_rate(params_rate(hw_params));
979 snd_cs4231_capture_format(chip, hw_params, new_cdfr);
980
981 return 0;
982 }
983
984 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
985 {
986 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
987 unsigned long flags;
988
989 spin_lock_irqsave(&chip->lock, flags);
990 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
991 CS4231_RECORD_PIO);
992
993
994 chip->c_periods_sent = 0;
995 spin_unlock_irqrestore(&chip->lock, flags);
996
997 return 0;
998 }
999
1000 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
1001 {
1002 unsigned long flags;
1003 unsigned char res;
1004
1005 spin_lock_irqsave(&chip->lock, flags);
1006 res = snd_cs4231_in(chip, CS4231_TEST_INIT);
1007 spin_unlock_irqrestore(&chip->lock, flags);
1008
1009 /* detect overrange only above 0dB; may be user selectable? */
1010 if (res & (0x08 | 0x02))
1011 chip->capture_substream->runtime->overrange++;
1012 }
1013
1014 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
1015 {
1016 if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
1017 snd_pcm_period_elapsed(chip->playback_substream);
1018 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
1019 &chip->p_periods_sent);
1020 }
1021 }
1022
1023 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
1024 {
1025 if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
1026 snd_pcm_period_elapsed(chip->capture_substream);
1027 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
1028 &chip->c_periods_sent);
1029 }
1030 }
1031
1032 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
1033 struct snd_pcm_substream *substream)
1034 {
1035 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1036 struct cs4231_dma_control *dma_cont = &chip->p_dma;
1037 size_t ptr;
1038
1039 if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1040 return 0;
1041 ptr = dma_cont->address(dma_cont);
1042 if (ptr != 0)
1043 ptr -= substream->runtime->dma_addr;
1044
1045 return bytes_to_frames(substream->runtime, ptr);
1046 }
1047
1048 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1049 struct snd_pcm_substream *substream)
1050 {
1051 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1052 struct cs4231_dma_control *dma_cont = &chip->c_dma;
1053 size_t ptr;
1054
1055 if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1056 return 0;
1057 ptr = dma_cont->address(dma_cont);
1058 if (ptr != 0)
1059 ptr -= substream->runtime->dma_addr;
1060
1061 return bytes_to_frames(substream->runtime, ptr);
1062 }
1063
1064 static int __init snd_cs4231_probe(struct snd_cs4231 *chip)
1065 {
1066 unsigned long flags;
1067 int i;
1068 int id = 0;
1069 int vers = 0;
1070 unsigned char *ptr;
1071
1072 for (i = 0; i < 50; i++) {
1073 mb();
1074 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1075 msleep(2);
1076 else {
1077 spin_lock_irqsave(&chip->lock, flags);
1078 snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1079 id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1080 vers = snd_cs4231_in(chip, CS4231_VERSION);
1081 spin_unlock_irqrestore(&chip->lock, flags);
1082 if (id == 0x0a)
1083 break; /* this is valid value */
1084 }
1085 }
1086 snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1087 if (id != 0x0a)
1088 return -ENODEV; /* no valid device found */
1089
1090 spin_lock_irqsave(&chip->lock, flags);
1091
1092 /* clear any pendings IRQ */
1093 __cs4231_readb(chip, CS4231U(chip, STATUS));
1094 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1095 mb();
1096
1097 spin_unlock_irqrestore(&chip->lock, flags);
1098
1099 chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1100 chip->image[CS4231_IFACE_CTRL] =
1101 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1102 chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1103 chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1104 if (vers & 0x20)
1105 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1106
1107 ptr = (unsigned char *) &chip->image;
1108
1109 snd_cs4231_mce_down(chip);
1110
1111 spin_lock_irqsave(&chip->lock, flags);
1112
1113 for (i = 0; i < 32; i++) /* ok.. fill all CS4231 registers */
1114 snd_cs4231_out(chip, i, *ptr++);
1115
1116 spin_unlock_irqrestore(&chip->lock, flags);
1117
1118 snd_cs4231_mce_up(chip);
1119
1120 snd_cs4231_mce_down(chip);
1121
1122 mdelay(2);
1123
1124 return 0; /* all things are ok.. */
1125 }
1126
1127 static struct snd_pcm_hardware snd_cs4231_playback = {
1128 .info = SNDRV_PCM_INFO_MMAP |
1129 SNDRV_PCM_INFO_INTERLEAVED |
1130 SNDRV_PCM_INFO_MMAP_VALID |
1131 SNDRV_PCM_INFO_SYNC_START,
1132 .formats = SNDRV_PCM_FMTBIT_MU_LAW |
1133 SNDRV_PCM_FMTBIT_A_LAW |
1134 SNDRV_PCM_FMTBIT_IMA_ADPCM |
1135 SNDRV_PCM_FMTBIT_U8 |
1136 SNDRV_PCM_FMTBIT_S16_LE |
1137 SNDRV_PCM_FMTBIT_S16_BE,
1138 .rates = SNDRV_PCM_RATE_KNOT |
1139 SNDRV_PCM_RATE_8000_48000,
1140 .rate_min = 5510,
1141 .rate_max = 48000,
1142 .channels_min = 1,
1143 .channels_max = 2,
1144 .buffer_bytes_max = 32 * 1024,
1145 .period_bytes_min = 64,
1146 .period_bytes_max = 32 * 1024,
1147 .periods_min = 1,
1148 .periods_max = 1024,
1149 };
1150
1151 static struct snd_pcm_hardware snd_cs4231_capture = {
1152 .info = SNDRV_PCM_INFO_MMAP |
1153 SNDRV_PCM_INFO_INTERLEAVED |
1154 SNDRV_PCM_INFO_MMAP_VALID |
1155 SNDRV_PCM_INFO_SYNC_START,
1156 .formats = SNDRV_PCM_FMTBIT_MU_LAW |
1157 SNDRV_PCM_FMTBIT_A_LAW |
1158 SNDRV_PCM_FMTBIT_IMA_ADPCM |
1159 SNDRV_PCM_FMTBIT_U8 |
1160 SNDRV_PCM_FMTBIT_S16_LE |
1161 SNDRV_PCM_FMTBIT_S16_BE,
1162 .rates = SNDRV_PCM_RATE_KNOT |
1163 SNDRV_PCM_RATE_8000_48000,
1164 .rate_min = 5510,
1165 .rate_max = 48000,
1166 .channels_min = 1,
1167 .channels_max = 2,
1168 .buffer_bytes_max = 32 * 1024,
1169 .period_bytes_min = 64,
1170 .period_bytes_max = 32 * 1024,
1171 .periods_min = 1,
1172 .periods_max = 1024,
1173 };
1174
1175 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1176 {
1177 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1178 struct snd_pcm_runtime *runtime = substream->runtime;
1179 int err;
1180
1181 runtime->hw = snd_cs4231_playback;
1182
1183 err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1184 if (err < 0) {
1185 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1186 return err;
1187 }
1188 chip->playback_substream = substream;
1189 chip->p_periods_sent = 0;
1190 snd_pcm_set_sync(substream);
1191 snd_cs4231_xrate(runtime);
1192
1193 return 0;
1194 }
1195
1196 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1197 {
1198 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1199 struct snd_pcm_runtime *runtime = substream->runtime;
1200 int err;
1201
1202 runtime->hw = snd_cs4231_capture;
1203
1204 err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1205 if (err < 0) {
1206 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1207 return err;
1208 }
1209 chip->capture_substream = substream;
1210 chip->c_periods_sent = 0;
1211 snd_pcm_set_sync(substream);
1212 snd_cs4231_xrate(runtime);
1213
1214 return 0;
1215 }
1216
1217 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1218 {
1219 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1220
1221 snd_cs4231_close(chip, CS4231_MODE_PLAY);
1222 chip->playback_substream = NULL;
1223
1224 return 0;
1225 }
1226
1227 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1228 {
1229 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1230
1231 snd_cs4231_close(chip, CS4231_MODE_RECORD);
1232 chip->capture_substream = NULL;
1233
1234 return 0;
1235 }
1236
1237 /* XXX We can do some power-management, in particular on EBUS using
1238 * XXX the audio AUXIO register...
1239 */
1240
1241 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1242 .open = snd_cs4231_playback_open,
1243 .close = snd_cs4231_playback_close,
1244 .ioctl = snd_pcm_lib_ioctl,
1245 .hw_params = snd_cs4231_playback_hw_params,
1246 .hw_free = snd_pcm_lib_free_pages,
1247 .prepare = snd_cs4231_playback_prepare,
1248 .trigger = snd_cs4231_trigger,
1249 .pointer = snd_cs4231_playback_pointer,
1250 };
1251
1252 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1253 .open = snd_cs4231_capture_open,
1254 .close = snd_cs4231_capture_close,
1255 .ioctl = snd_pcm_lib_ioctl,
1256 .hw_params = snd_cs4231_capture_hw_params,
1257 .hw_free = snd_pcm_lib_free_pages,
1258 .prepare = snd_cs4231_capture_prepare,
1259 .trigger = snd_cs4231_trigger,
1260 .pointer = snd_cs4231_capture_pointer,
1261 };
1262
1263 static int __init snd_cs4231_pcm(struct snd_card *card)
1264 {
1265 struct snd_cs4231 *chip = card->private_data;
1266 struct snd_pcm *pcm;
1267 int err;
1268
1269 err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1270 if (err < 0)
1271 return err;
1272
1273 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1274 &snd_cs4231_playback_ops);
1275 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1276 &snd_cs4231_capture_ops);
1277
1278 /* global setup */
1279 pcm->private_data = chip;
1280 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1281 strcpy(pcm->name, "CS4231");
1282
1283 chip->p_dma.preallocate(chip, pcm);
1284
1285 chip->pcm = pcm;
1286
1287 return 0;
1288 }
1289
1290 static int __init snd_cs4231_timer(struct snd_card *card)
1291 {
1292 struct snd_cs4231 *chip = card->private_data;
1293 struct snd_timer *timer;
1294 struct snd_timer_id tid;
1295 int err;
1296
1297 /* Timer initialization */
1298 tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1299 tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1300 tid.card = card->number;
1301 tid.device = 0;
1302 tid.subdevice = 0;
1303 err = snd_timer_new(card, "CS4231", &tid, &timer);
1304 if (err < 0)
1305 return err;
1306 strcpy(timer->name, "CS4231");
1307 timer->private_data = chip;
1308 timer->hw = snd_cs4231_timer_table;
1309 chip->timer = timer;
1310
1311 return 0;
1312 }
1313
1314 /*
1315 * MIXER part
1316 */
1317
1318 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1319 struct snd_ctl_elem_info *uinfo)
1320 {
1321 static char *texts[4] = {
1322 "Line", "CD", "Mic", "Mix"
1323 };
1324
1325 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1326 uinfo->count = 2;
1327 uinfo->value.enumerated.items = 4;
1328 if (uinfo->value.enumerated.item > 3)
1329 uinfo->value.enumerated.item = 3;
1330 strcpy(uinfo->value.enumerated.name,
1331 texts[uinfo->value.enumerated.item]);
1332
1333 return 0;
1334 }
1335
1336 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1337 struct snd_ctl_elem_value *ucontrol)
1338 {
1339 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1340 unsigned long flags;
1341
1342 spin_lock_irqsave(&chip->lock, flags);
1343 ucontrol->value.enumerated.item[0] =
1344 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1345 ucontrol->value.enumerated.item[1] =
1346 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1347 spin_unlock_irqrestore(&chip->lock, flags);
1348
1349 return 0;
1350 }
1351
1352 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1353 struct snd_ctl_elem_value *ucontrol)
1354 {
1355 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1356 unsigned long flags;
1357 unsigned short left, right;
1358 int change;
1359
1360 if (ucontrol->value.enumerated.item[0] > 3 ||
1361 ucontrol->value.enumerated.item[1] > 3)
1362 return -EINVAL;
1363 left = ucontrol->value.enumerated.item[0] << 6;
1364 right = ucontrol->value.enumerated.item[1] << 6;
1365
1366 spin_lock_irqsave(&chip->lock, flags);
1367
1368 left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1369 right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1370 change = left != chip->image[CS4231_LEFT_INPUT] ||
1371 right != chip->image[CS4231_RIGHT_INPUT];
1372 snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1373 snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1374
1375 spin_unlock_irqrestore(&chip->lock, flags);
1376
1377 return change;
1378 }
1379
1380 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1381 struct snd_ctl_elem_info *uinfo)
1382 {
1383 int mask = (kcontrol->private_value >> 16) & 0xff;
1384
1385 uinfo->type = (mask == 1) ?
1386 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1387 uinfo->count = 1;
1388 uinfo->value.integer.min = 0;
1389 uinfo->value.integer.max = mask;
1390
1391 return 0;
1392 }
1393
1394 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1395 struct snd_ctl_elem_value *ucontrol)
1396 {
1397 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1398 unsigned long flags;
1399 int reg = kcontrol->private_value & 0xff;
1400 int shift = (kcontrol->private_value >> 8) & 0xff;
1401 int mask = (kcontrol->private_value >> 16) & 0xff;
1402 int invert = (kcontrol->private_value >> 24) & 0xff;
1403
1404 spin_lock_irqsave(&chip->lock, flags);
1405
1406 ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1407
1408 spin_unlock_irqrestore(&chip->lock, flags);
1409
1410 if (invert)
1411 ucontrol->value.integer.value[0] =
1412 (mask - ucontrol->value.integer.value[0]);
1413
1414 return 0;
1415 }
1416
1417 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1418 struct snd_ctl_elem_value *ucontrol)
1419 {
1420 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1421 unsigned long flags;
1422 int reg = kcontrol->private_value & 0xff;
1423 int shift = (kcontrol->private_value >> 8) & 0xff;
1424 int mask = (kcontrol->private_value >> 16) & 0xff;
1425 int invert = (kcontrol->private_value >> 24) & 0xff;
1426 int change;
1427 unsigned short val;
1428
1429 val = (ucontrol->value.integer.value[0] & mask);
1430 if (invert)
1431 val = mask - val;
1432 val <<= shift;
1433
1434 spin_lock_irqsave(&chip->lock, flags);
1435
1436 val = (chip->image[reg] & ~(mask << shift)) | val;
1437 change = val != chip->image[reg];
1438 snd_cs4231_out(chip, reg, val);
1439
1440 spin_unlock_irqrestore(&chip->lock, flags);
1441
1442 return change;
1443 }
1444
1445 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1446 struct snd_ctl_elem_info *uinfo)
1447 {
1448 int mask = (kcontrol->private_value >> 24) & 0xff;
1449
1450 uinfo->type = mask == 1 ?
1451 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1452 uinfo->count = 2;
1453 uinfo->value.integer.min = 0;
1454 uinfo->value.integer.max = mask;
1455
1456 return 0;
1457 }
1458
1459 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1460 struct snd_ctl_elem_value *ucontrol)
1461 {
1462 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1463 unsigned long flags;
1464 int left_reg = kcontrol->private_value & 0xff;
1465 int right_reg = (kcontrol->private_value >> 8) & 0xff;
1466 int shift_left = (kcontrol->private_value >> 16) & 0x07;
1467 int shift_right = (kcontrol->private_value >> 19) & 0x07;
1468 int mask = (kcontrol->private_value >> 24) & 0xff;
1469 int invert = (kcontrol->private_value >> 22) & 1;
1470
1471 spin_lock_irqsave(&chip->lock, flags);
1472
1473 ucontrol->value.integer.value[0] =
1474 (chip->image[left_reg] >> shift_left) & mask;
1475 ucontrol->value.integer.value[1] =
1476 (chip->image[right_reg] >> shift_right) & mask;
1477
1478 spin_unlock_irqrestore(&chip->lock, flags);
1479
1480 if (invert) {
1481 ucontrol->value.integer.value[0] =
1482 (mask - ucontrol->value.integer.value[0]);
1483 ucontrol->value.integer.value[1] =
1484 (mask - ucontrol->value.integer.value[1]);
1485 }
1486
1487 return 0;
1488 }
1489
1490 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1491 struct snd_ctl_elem_value *ucontrol)
1492 {
1493 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1494 unsigned long flags;
1495 int left_reg = kcontrol->private_value & 0xff;
1496 int right_reg = (kcontrol->private_value >> 8) & 0xff;
1497 int shift_left = (kcontrol->private_value >> 16) & 0x07;
1498 int shift_right = (kcontrol->private_value >> 19) & 0x07;
1499 int mask = (kcontrol->private_value >> 24) & 0xff;
1500 int invert = (kcontrol->private_value >> 22) & 1;
1501 int change;
1502 unsigned short val1, val2;
1503
1504 val1 = ucontrol->value.integer.value[0] & mask;
1505 val2 = ucontrol->value.integer.value[1] & mask;
1506 if (invert) {
1507 val1 = mask - val1;
1508 val2 = mask - val2;
1509 }
1510 val1 <<= shift_left;
1511 val2 <<= shift_right;
1512
1513 spin_lock_irqsave(&chip->lock, flags);
1514
1515 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1516 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1517 change = val1 != chip->image[left_reg];
1518 change |= val2 != chip->image[right_reg];
1519 snd_cs4231_out(chip, left_reg, val1);
1520 snd_cs4231_out(chip, right_reg, val2);
1521
1522 spin_unlock_irqrestore(&chip->lock, flags);
1523
1524 return change;
1525 }
1526
1527 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1528 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1529 .info = snd_cs4231_info_single, \
1530 .get = snd_cs4231_get_single, .put = snd_cs4231_put_single, \
1531 .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1532
1533 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1534 shift_right, mask, invert) \
1535 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1536 .info = snd_cs4231_info_double, \
1537 .get = snd_cs4231_get_double, .put = snd_cs4231_put_double, \
1538 .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1539 ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1540
1541 static struct snd_kcontrol_new snd_cs4231_controls[] __initdata = {
1542 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1543 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1544 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1545 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1546 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1547 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1548 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1549 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1550 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1551 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1552 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1553 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1554 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1555 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1556 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1557 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1558 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1559 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1560 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1561 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1562 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1563 15, 0),
1564 {
1565 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1566 .name = "Capture Source",
1567 .info = snd_cs4231_info_mux,
1568 .get = snd_cs4231_get_mux,
1569 .put = snd_cs4231_put_mux,
1570 },
1571 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1572 1, 0),
1573 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1574 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1575 /* SPARC specific uses of XCTL{0,1} general purpose outputs. */
1576 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1577 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1578 };
1579
1580 static int __init snd_cs4231_mixer(struct snd_card *card)
1581 {
1582 struct snd_cs4231 *chip = card->private_data;
1583 int err, idx;
1584
1585 snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1586
1587 strcpy(card->mixername, chip->pcm->name);
1588
1589 for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1590 err = snd_ctl_add(card,
1591 snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1592 if (err < 0)
1593 return err;
1594 }
1595 return 0;
1596 }
1597
1598 static int dev;
1599
1600 static int __init cs4231_attach_begin(struct snd_card **rcard)
1601 {
1602 struct snd_card *card;
1603 struct snd_cs4231 *chip;
1604
1605 *rcard = NULL;
1606
1607 if (dev >= SNDRV_CARDS)
1608 return -ENODEV;
1609
1610 if (!enable[dev]) {
1611 dev++;
1612 return -ENOENT;
1613 }
1614
1615 card = snd_card_new(index[dev], id[dev], THIS_MODULE,
1616 sizeof(struct snd_cs4231));
1617 if (card == NULL)
1618 return -ENOMEM;
1619
1620 strcpy(card->driver, "CS4231");
1621 strcpy(card->shortname, "Sun CS4231");
1622
1623 chip = card->private_data;
1624 chip->card = card;
1625
1626 *rcard = card;
1627 return 0;
1628 }
1629
1630 static int __init cs4231_attach_finish(struct snd_card *card)
1631 {
1632 struct snd_cs4231 *chip = card->private_data;
1633 int err;
1634
1635 err = snd_cs4231_pcm(card);
1636 if (err < 0)
1637 goto out_err;
1638
1639 err = snd_cs4231_mixer(card);
1640 if (err < 0)
1641 goto out_err;
1642
1643 err = snd_cs4231_timer(card);
1644 if (err < 0)
1645 goto out_err;
1646
1647 err = snd_card_register(card);
1648 if (err < 0)
1649 goto out_err;
1650
1651 chip->next = cs4231_list;
1652 cs4231_list = chip;
1653
1654 dev++;
1655 return 0;
1656
1657 out_err:
1658 snd_card_free(card);
1659 return err;
1660 }
1661
1662 #ifdef SBUS_SUPPORT
1663
1664 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1665 {
1666 unsigned long flags;
1667 unsigned char status;
1668 u32 csr;
1669 struct snd_cs4231 *chip = dev_id;
1670
1671 /*This is IRQ is not raised by the cs4231*/
1672 if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1673 return IRQ_NONE;
1674
1675 /* ACK the APC interrupt. */
1676 csr = sbus_readl(chip->port + APCCSR);
1677
1678 sbus_writel(csr, chip->port + APCCSR);
1679
1680 if ((csr & APC_PDMA_READY) &&
1681 (csr & APC_PLAY_INT) &&
1682 (csr & APC_XINT_PNVA) &&
1683 !(csr & APC_XINT_EMPT))
1684 snd_cs4231_play_callback(chip);
1685
1686 if ((csr & APC_CDMA_READY) &&
1687 (csr & APC_CAPT_INT) &&
1688 (csr & APC_XINT_CNVA) &&
1689 !(csr & APC_XINT_EMPT))
1690 snd_cs4231_capture_callback(chip);
1691
1692 status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1693
1694 if (status & CS4231_TIMER_IRQ) {
1695 if (chip->timer)
1696 snd_timer_interrupt(chip->timer, chip->timer->sticks);
1697 }
1698
1699 if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1700 snd_cs4231_overrange(chip);
1701
1702 /* ACK the CS4231 interrupt. */
1703 spin_lock_irqsave(&chip->lock, flags);
1704 snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1705 spin_unlock_irqrestore(&chip->lock, flags);
1706
1707 return IRQ_HANDLED;
1708 }
1709
1710 /*
1711 * SBUS DMA routines
1712 */
1713
1714 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1715 dma_addr_t bus_addr, size_t len)
1716 {
1717 unsigned long flags;
1718 u32 test, csr;
1719 int err;
1720 struct sbus_dma_info *base = &dma_cont->sbus_info;
1721
1722 if (len >= (1 << 24))
1723 return -EINVAL;
1724 spin_lock_irqsave(&base->lock, flags);
1725 csr = sbus_readl(base->regs + APCCSR);
1726 err = -EINVAL;
1727 test = APC_CDMA_READY;
1728 if (base->dir == APC_PLAY)
1729 test = APC_PDMA_READY;
1730 if (!(csr & test))
1731 goto out;
1732 err = -EBUSY;
1733 test = APC_XINT_CNVA;
1734 if (base->dir == APC_PLAY)
1735 test = APC_XINT_PNVA;
1736 if (!(csr & test))
1737 goto out;
1738 err = 0;
1739 sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1740 sbus_writel(len, base->regs + base->dir + APCNC);
1741 out:
1742 spin_unlock_irqrestore(&base->lock, flags);
1743 return err;
1744 }
1745
1746 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1747 {
1748 unsigned long flags;
1749 u32 csr, test;
1750 struct sbus_dma_info *base = &dma_cont->sbus_info;
1751
1752 spin_lock_irqsave(&base->lock, flags);
1753 csr = sbus_readl(base->regs + APCCSR);
1754 test = APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1755 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1756 APC_XINT_PENA;
1757 if (base->dir == APC_RECORD)
1758 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1759 APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1760 csr |= test;
1761 sbus_writel(csr, base->regs + APCCSR);
1762 spin_unlock_irqrestore(&base->lock, flags);
1763 }
1764
1765 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1766 {
1767 unsigned long flags;
1768 u32 csr, shift;
1769 struct sbus_dma_info *base = &dma_cont->sbus_info;
1770
1771 spin_lock_irqsave(&base->lock, flags);
1772 if (!on) {
1773 sbus_writel(0, base->regs + base->dir + APCNC);
1774 sbus_writel(0, base->regs + base->dir + APCNVA);
1775 if (base->dir == APC_PLAY) {
1776 sbus_writel(0, base->regs + base->dir + APCC);
1777 sbus_writel(0, base->regs + base->dir + APCVA);
1778 }
1779
1780 udelay(1200);
1781 }
1782 csr = sbus_readl(base->regs + APCCSR);
1783 shift = 0;
1784 if (base->dir == APC_PLAY)
1785 shift = 1;
1786 if (on)
1787 csr &= ~(APC_CPAUSE << shift);
1788 else
1789 csr |= (APC_CPAUSE << shift);
1790 sbus_writel(csr, base->regs + APCCSR);
1791 if (on)
1792 csr |= (APC_CDMA_READY << shift);
1793 else
1794 csr &= ~(APC_CDMA_READY << shift);
1795 sbus_writel(csr, base->regs + APCCSR);
1796
1797 spin_unlock_irqrestore(&base->lock, flags);
1798 }
1799
1800 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1801 {
1802 struct sbus_dma_info *base = &dma_cont->sbus_info;
1803
1804 return sbus_readl(base->regs + base->dir + APCVA);
1805 }
1806
1807 static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1808 {
1809 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
1810 snd_dma_sbus_data(chip->dev_u.sdev),
1811 64 * 1024, 128 * 1024);
1812 }
1813
1814 /*
1815 * Init and exit routines
1816 */
1817
1818 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1819 {
1820 if (chip->irq[0])
1821 free_irq(chip->irq[0], chip);
1822
1823 if (chip->port)
1824 sbus_iounmap(chip->port, chip->regs_size);
1825
1826 return 0;
1827 }
1828
1829 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1830 {
1831 struct snd_cs4231 *cp = device->device_data;
1832
1833 return snd_cs4231_sbus_free(cp);
1834 }
1835
1836 static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1837 .dev_free = snd_cs4231_sbus_dev_free,
1838 };
1839
1840 static int __init snd_cs4231_sbus_create(struct snd_card *card,
1841 struct sbus_dev *sdev,
1842 int dev)
1843 {
1844 struct snd_cs4231 *chip = card->private_data;
1845 int err;
1846
1847 spin_lock_init(&chip->lock);
1848 spin_lock_init(&chip->c_dma.sbus_info.lock);
1849 spin_lock_init(&chip->p_dma.sbus_info.lock);
1850 mutex_init(&chip->mce_mutex);
1851 mutex_init(&chip->open_mutex);
1852 chip->dev_u.sdev = sdev;
1853 chip->regs_size = sdev->reg_addrs[0].reg_size;
1854 memcpy(&chip->image, &snd_cs4231_original_image,
1855 sizeof(snd_cs4231_original_image));
1856
1857 chip->port = sbus_ioremap(&sdev->resource[0], 0,
1858 chip->regs_size, "cs4231");
1859 if (!chip->port) {
1860 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1861 return -EIO;
1862 }
1863
1864 chip->c_dma.sbus_info.regs = chip->port;
1865 chip->p_dma.sbus_info.regs = chip->port;
1866 chip->c_dma.sbus_info.dir = APC_RECORD;
1867 chip->p_dma.sbus_info.dir = APC_PLAY;
1868
1869 chip->p_dma.prepare = sbus_dma_prepare;
1870 chip->p_dma.enable = sbus_dma_enable;
1871 chip->p_dma.request = sbus_dma_request;
1872 chip->p_dma.address = sbus_dma_addr;
1873 chip->p_dma.preallocate = sbus_dma_preallocate;
1874
1875 chip->c_dma.prepare = sbus_dma_prepare;
1876 chip->c_dma.enable = sbus_dma_enable;
1877 chip->c_dma.request = sbus_dma_request;
1878 chip->c_dma.address = sbus_dma_addr;
1879 chip->c_dma.preallocate = sbus_dma_preallocate;
1880
1881 if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
1882 IRQF_SHARED, "cs4231", chip)) {
1883 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1884 dev, sdev->irqs[0]);
1885 snd_cs4231_sbus_free(chip);
1886 return -EBUSY;
1887 }
1888 chip->irq[0] = sdev->irqs[0];
1889
1890 if (snd_cs4231_probe(chip) < 0) {
1891 snd_cs4231_sbus_free(chip);
1892 return -ENODEV;
1893 }
1894 snd_cs4231_init(chip);
1895
1896 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1897 chip, &snd_cs4231_sbus_dev_ops)) < 0) {
1898 snd_cs4231_sbus_free(chip);
1899 return err;
1900 }
1901
1902 return 0;
1903 }
1904
1905 static int __init cs4231_sbus_attach(struct sbus_dev *sdev)
1906 {
1907 struct resource *rp = &sdev->resource[0];
1908 struct snd_card *card;
1909 int err;
1910
1911 err = cs4231_attach_begin(&card);
1912 if (err)
1913 return err;
1914
1915 sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1916 card->shortname,
1917 rp->flags & 0xffL,
1918 (unsigned long long)rp->start,
1919 sdev->irqs[0]);
1920
1921 err = snd_cs4231_sbus_create(card, sdev, dev);
1922 if (err < 0) {
1923 snd_card_free(card);
1924 return err;
1925 }
1926
1927 return cs4231_attach_finish(card);
1928 }
1929 #endif
1930
1931 #ifdef EBUS_SUPPORT
1932
1933 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1934 void *cookie)
1935 {
1936 struct snd_cs4231 *chip = cookie;
1937
1938 snd_cs4231_play_callback(chip);
1939 }
1940
1941 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1942 int event, void *cookie)
1943 {
1944 struct snd_cs4231 *chip = cookie;
1945
1946 snd_cs4231_capture_callback(chip);
1947 }
1948
1949 /*
1950 * EBUS DMA wrappers
1951 */
1952
1953 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1954 dma_addr_t bus_addr, size_t len)
1955 {
1956 return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1957 }
1958
1959 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1960 {
1961 ebus_dma_enable(&dma_cont->ebus_info, on);
1962 }
1963
1964 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1965 {
1966 ebus_dma_prepare(&dma_cont->ebus_info, dir);
1967 }
1968
1969 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1970 {
1971 return ebus_dma_addr(&dma_cont->ebus_info);
1972 }
1973
1974 static void _ebus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1975 {
1976 snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1977 snd_dma_pci_data(chip->dev_u.pdev),
1978 64*1024, 128*1024);
1979 }
1980
1981 /*
1982 * Init and exit routines
1983 */
1984
1985 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1986 {
1987 if (chip->c_dma.ebus_info.regs) {
1988 ebus_dma_unregister(&chip->c_dma.ebus_info);
1989 iounmap(chip->c_dma.ebus_info.regs);
1990 }
1991 if (chip->p_dma.ebus_info.regs) {
1992 ebus_dma_unregister(&chip->p_dma.ebus_info);
1993 iounmap(chip->p_dma.ebus_info.regs);
1994 }
1995
1996 if (chip->port)
1997 iounmap(chip->port);
1998
1999 return 0;
2000 }
2001
2002 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
2003 {
2004 struct snd_cs4231 *cp = device->device_data;
2005
2006 return snd_cs4231_ebus_free(cp);
2007 }
2008
2009 static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
2010 .dev_free = snd_cs4231_ebus_dev_free,
2011 };
2012
2013 static int __init snd_cs4231_ebus_create(struct snd_card *card,
2014 struct linux_ebus_device *edev,
2015 int dev)
2016 {
2017 struct snd_cs4231 *chip = card->private_data;
2018 int err;
2019
2020 spin_lock_init(&chip->lock);
2021 spin_lock_init(&chip->c_dma.ebus_info.lock);
2022 spin_lock_init(&chip->p_dma.ebus_info.lock);
2023 mutex_init(&chip->mce_mutex);
2024 mutex_init(&chip->open_mutex);
2025 chip->flags |= CS4231_FLAG_EBUS;
2026 chip->dev_u.pdev = edev->bus->self;
2027 memcpy(&chip->image, &snd_cs4231_original_image,
2028 sizeof(snd_cs4231_original_image));
2029 strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
2030 chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2031 chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
2032 chip->c_dma.ebus_info.client_cookie = chip;
2033 chip->c_dma.ebus_info.irq = edev->irqs[0];
2034 strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
2035 chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2036 chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
2037 chip->p_dma.ebus_info.client_cookie = chip;
2038 chip->p_dma.ebus_info.irq = edev->irqs[1];
2039
2040 chip->p_dma.prepare = _ebus_dma_prepare;
2041 chip->p_dma.enable = _ebus_dma_enable;
2042 chip->p_dma.request = _ebus_dma_request;
2043 chip->p_dma.address = _ebus_dma_addr;
2044 chip->p_dma.preallocate = _ebus_dma_preallocate;
2045
2046 chip->c_dma.prepare = _ebus_dma_prepare;
2047 chip->c_dma.enable = _ebus_dma_enable;
2048 chip->c_dma.request = _ebus_dma_request;
2049 chip->c_dma.address = _ebus_dma_addr;
2050 chip->c_dma.preallocate = _ebus_dma_preallocate;
2051
2052 chip->port = ioremap(edev->resource[0].start, 0x10);
2053 chip->p_dma.ebus_info.regs = ioremap(edev->resource[1].start, 0x10);
2054 chip->c_dma.ebus_info.regs = ioremap(edev->resource[2].start, 0x10);
2055 if (!chip->port || !chip->p_dma.ebus_info.regs ||
2056 !chip->c_dma.ebus_info.regs) {
2057 snd_cs4231_ebus_free(chip);
2058 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2059 return -EIO;
2060 }
2061
2062 if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2063 snd_cs4231_ebus_free(chip);
2064 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
2065 dev);
2066 return -EBUSY;
2067 }
2068 if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2069 snd_cs4231_ebus_free(chip);
2070 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2071 dev);
2072 return -EBUSY;
2073 }
2074
2075 if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2076 snd_cs4231_ebus_free(chip);
2077 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2078 dev);
2079 return -EBUSY;
2080 }
2081 if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2082 snd_cs4231_ebus_free(chip);
2083 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2084 return -EBUSY;
2085 }
2086
2087 if (snd_cs4231_probe(chip) < 0) {
2088 snd_cs4231_ebus_free(chip);
2089 return -ENODEV;
2090 }
2091 snd_cs4231_init(chip);
2092
2093 if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2094 chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2095 snd_cs4231_ebus_free(chip);
2096 return err;
2097 }
2098
2099 return 0;
2100 }
2101
2102 static int __init cs4231_ebus_attach(struct linux_ebus_device *edev)
2103 {
2104 struct snd_card *card;
2105 int err;
2106
2107 err = cs4231_attach_begin(&card);
2108 if (err)
2109 return err;
2110
2111 sprintf(card->longname, "%s at 0x%lx, irq %d",
2112 card->shortname,
2113 edev->resource[0].start,
2114 edev->irqs[0]);
2115
2116 err = snd_cs4231_ebus_create(card, edev, dev);
2117 if (err < 0) {
2118 snd_card_free(card);
2119 return err;
2120 }
2121
2122 return cs4231_attach_finish(card);
2123 }
2124 #endif
2125
2126 static int __init cs4231_init(void)
2127 {
2128 #ifdef SBUS_SUPPORT
2129 struct sbus_bus *sbus;
2130 struct sbus_dev *sdev;
2131 #endif
2132 #ifdef EBUS_SUPPORT
2133 struct linux_ebus *ebus;
2134 struct linux_ebus_device *edev;
2135 #endif
2136 int found;
2137
2138 found = 0;
2139
2140 #ifdef SBUS_SUPPORT
2141 for_all_sbusdev(sdev, sbus) {
2142 if (!strcmp(sdev->prom_name, "SUNW,CS4231")) {
2143 if (cs4231_sbus_attach(sdev) == 0)
2144 found++;
2145 }
2146 }
2147 #endif
2148 #ifdef EBUS_SUPPORT
2149 for_each_ebus(ebus) {
2150 for_each_ebusdev(edev, ebus) {
2151 int match = 0;
2152
2153 if (!strcmp(edev->prom_node->name, "SUNW,CS4231")) {
2154 match = 1;
2155 } else if (!strcmp(edev->prom_node->name, "audio")) {
2156 const char *compat;
2157
2158 compat = of_get_property(edev->prom_node,
2159 "compatible", NULL);
2160 if (compat && !strcmp(compat, "SUNW,CS4231"))
2161 match = 1;
2162 }
2163
2164 if (match &&
2165 cs4231_ebus_attach(edev) == 0)
2166 found++;
2167 }
2168 }
2169 #endif
2170
2171
2172 return (found > 0) ? 0 : -EIO;
2173 }
2174
2175 static void __exit cs4231_exit(void)
2176 {
2177 struct snd_cs4231 *p = cs4231_list;
2178
2179 while (p != NULL) {
2180 struct snd_cs4231 *next = p->next;
2181
2182 snd_card_free(p->card);
2183
2184 p = next;
2185 }
2186
2187 cs4231_list = NULL;
2188 }
2189
2190 module_init(cs4231_init);
2191 module_exit(cs4231_exit);
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