1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Driver for CS4231 sound chips found on Sparcs.
4 * Copyright (C) 2002, 2008 David S. Miller <davem@davemloft.net>
5 *
6 * Based entirely upon drivers/sbus/audio/cs4231.c which is:
7 * Copyright (C) 1996, 1997, 1998 Derrick J Brashear (shadow@andrew.cmu.edu)
8 * and also sound/isa/cs423x/cs4231_lib.c which is:
9 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
10 */
11
12 #include <linux/module.h>
13 #include <linux/kernel.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 #include <linux/of.h>
21 #include <linux/platform_device.h>
22
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 #endif
34
35 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
36 #define EBUS_SUPPORT
37 #include <linux/pci.h>
38 #include <asm/ebus_dma.h>
39 #endif
40
41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
43 /* Enable this card */
44 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
45
46 module_param_array(index, int, NULL, 0444);
47 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
48 module_param_array(id, charp, NULL, 0444);
49 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
50 module_param_array(enable, bool, NULL, 0444);
51 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
52 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
53 MODULE_DESCRIPTION("Sun CS4231");
54 MODULE_LICENSE("GPL");
55
56 #ifdef SBUS_SUPPORT
57 struct sbus_dma_info {
58 spinlock_t lock; /* DMA access lock */
59 int dir;
60 void __iomem *regs;
61 };
62 #endif
63
64 struct snd_cs4231;
65 struct cs4231_dma_control {
66 void (*prepare)(struct cs4231_dma_control *dma_cont,
67 int dir);
68 void (*enable)(struct cs4231_dma_control *dma_cont, int on);
69 int (*request)(struct cs4231_dma_control *dma_cont,
70 dma_addr_t bus_addr, size_t len);
71 unsigned int (*address)(struct cs4231_dma_control *dma_cont);
72 #ifdef EBUS_SUPPORT
73 struct ebus_dma_info ebus_info;
74 #endif
75 #ifdef SBUS_SUPPORT
76 struct sbus_dma_info sbus_info;
77 #endif
78 };
79
80 struct snd_cs4231 {
81 spinlock_t lock; /* registers access lock */
82 void __iomem *port;
83
84 struct cs4231_dma_control p_dma;
85 struct cs4231_dma_control c_dma;
86
87 u32 flags;
88 #define CS4231_FLAG_EBUS 0x00000001
89 #define CS4231_FLAG_PLAYBACK 0x00000002
90 #define CS4231_FLAG_CAPTURE 0x00000004
91
92 struct snd_card *card;
93 struct snd_pcm *pcm;
94 struct snd_pcm_substream *playback_substream;
95 unsigned int p_periods_sent;
96 struct snd_pcm_substream *capture_substream;
97 unsigned int c_periods_sent;
98 struct snd_timer *timer;
99
100 unsigned short mode;
101 #define CS4231_MODE_NONE 0x0000
102 #define CS4231_MODE_PLAY 0x0001
103 #define CS4231_MODE_RECORD 0x0002
104 #define CS4231_MODE_TIMER 0x0004
105 #define CS4231_MODE_OPEN (CS4231_MODE_PLAY | CS4231_MODE_RECORD | \
106 CS4231_MODE_TIMER)
107
108 unsigned char image[32]; /* registers image */
109 int mce_bit;
110 int calibrate_mute;
111 struct mutex mce_mutex; /* mutex for mce register */
112 struct mutex open_mutex; /* mutex for ALSA open/close */
113
114 struct platform_device *op;
115 unsigned int irq[2];
116 unsigned int regs_size;
117 struct snd_cs4231 *next;
118 };
119
120 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
121 * now.... -DaveM
122 */
123
124 /* IO ports */
125 #include <sound/cs4231-regs.h>
126
127 /* XXX offsets are different than PC ISA chips... */
128 #define CS4231U(chip, x) ((chip)->port + ((c_d_c_CS4231##x) << 2))
129
130 /* SBUS DMA register defines. */
131
132 #define APCCSR 0x10UL /* APC DMA CSR */
133 #define APCCVA 0x20UL /* APC Capture DMA Address */
134 #define APCCC 0x24UL /* APC Capture Count */
135 #define APCCNVA 0x28UL /* APC Capture DMA Next Address */
136 #define APCCNC 0x2cUL /* APC Capture Next Count */
137 #define APCPVA 0x30UL /* APC Play DMA Address */
138 #define APCPC 0x34UL /* APC Play Count */
139 #define APCPNVA 0x38UL /* APC Play DMA Next Address */
140 #define APCPNC 0x3cUL /* APC Play Next Count */
141
142 /* Defines for SBUS DMA-routines */
143
144 #define APCVA 0x0UL /* APC DMA Address */
145 #define APCC 0x4UL /* APC Count */
146 #define APCNVA 0x8UL /* APC DMA Next Address */
147 #define APCNC 0xcUL /* APC Next Count */
148 #define APC_PLAY 0x30UL /* Play registers start at 0x30 */
149 #define APC_RECORD 0x20UL /* Record registers start at 0x20 */
150
151 /* APCCSR bits */
152
153 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
154 #define APC_PLAY_INT 0x400000 /* Playback interrupt */
155 #define APC_CAPT_INT 0x200000 /* Capture interrupt */
156 #define APC_GENL_INT 0x100000 /* General interrupt */
157 #define APC_XINT_ENA 0x80000 /* General ext int. enable */
158 #define APC_XINT_PLAY 0x40000 /* Playback ext intr */
159 #define APC_XINT_CAPT 0x20000 /* Capture ext intr */
160 #define APC_XINT_GENL 0x10000 /* Error ext intr */
161 #define APC_XINT_EMPT 0x8000 /* Pipe empty interrupt (0 write to pva) */
162 #define APC_XINT_PEMP 0x4000 /* Play pipe empty (pva and pnva not set) */
163 #define APC_XINT_PNVA 0x2000 /* Playback NVA dirty */
164 #define APC_XINT_PENA 0x1000 /* play pipe empty Int enable */
165 #define APC_XINT_COVF 0x800 /* Cap data dropped on floor */
166 #define APC_XINT_CNVA 0x400 /* Capture NVA dirty */
167 #define APC_XINT_CEMP 0x200 /* Capture pipe empty (cva and cnva not set) */
168 #define APC_XINT_CENA 0x100 /* Cap. pipe empty int enable */
169 #define APC_PPAUSE 0x80 /* Pause the play DMA */
170 #define APC_CPAUSE 0x40 /* Pause the capture DMA */
171 #define APC_CDC_RESET 0x20 /* CODEC RESET */
172 #define APC_PDMA_READY 0x08 /* Play DMA Go */
173 #define APC_CDMA_READY 0x04 /* Capture DMA Go */
174 #define APC_CHIP_RESET 0x01 /* Reset the chip */
175
176 /* EBUS DMA register offsets */
177
178 #define EBDMA_CSR 0x00UL /* Control/Status */
179 #define EBDMA_ADDR 0x04UL /* DMA Address */
180 #define EBDMA_COUNT 0x08UL /* DMA Count */
181
182 /*
183 * Some variables
184 */
185
186 static const unsigned char freq_bits[14] = {
187 /* 5510 */ 0x00 | CS4231_XTAL2,
188 /* 6620 */ 0x0E | CS4231_XTAL2,
189 /* 8000 */ 0x00 | CS4231_XTAL1,
190 /* 9600 */ 0x0E | CS4231_XTAL1,
191 /* 11025 */ 0x02 | CS4231_XTAL2,
192 /* 16000 */ 0x02 | CS4231_XTAL1,
193 /* 18900 */ 0x04 | CS4231_XTAL2,
194 /* 22050 */ 0x06 | CS4231_XTAL2,
195 /* 27042 */ 0x04 | CS4231_XTAL1,
196 /* 32000 */ 0x06 | CS4231_XTAL1,
197 /* 33075 */ 0x0C | CS4231_XTAL2,
198 /* 37800 */ 0x08 | CS4231_XTAL2,
199 /* 44100 */ 0x0A | CS4231_XTAL2,
200 /* 48000 */ 0x0C | CS4231_XTAL1
201 };
202
203 static const unsigned int rates[14] = {
204 5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
205 27042, 32000, 33075, 37800, 44100, 48000
206 };
207
208 static const struct snd_pcm_hw_constraint_list hw_constraints_rates = {
209 .count = ARRAY_SIZE(rates),
210 .list = rates,
211 };
212
snd_cs4231_xrate(struct snd_pcm_runtime * runtime)213 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
214 {
215 return snd_pcm_hw_constraint_list(runtime, 0,
216 SNDRV_PCM_HW_PARAM_RATE,
217 &hw_constraints_rates);
218 }
219
220 static const unsigned char snd_cs4231_original_image[32] =
221 {
222 0x00, /* 00/00 - lic */
223 0x00, /* 01/01 - ric */
224 0x9f, /* 02/02 - la1ic */
225 0x9f, /* 03/03 - ra1ic */
226 0x9f, /* 04/04 - la2ic */
227 0x9f, /* 05/05 - ra2ic */
228 0xbf, /* 06/06 - loc */
229 0xbf, /* 07/07 - roc */
230 0x20, /* 08/08 - pdfr */
231 CS4231_AUTOCALIB, /* 09/09 - ic */
232 0x00, /* 0a/10 - pc */
233 0x00, /* 0b/11 - ti */
234 CS4231_MODE2, /* 0c/12 - mi */
235 0x00, /* 0d/13 - lbc */
236 0x00, /* 0e/14 - pbru */
237 0x00, /* 0f/15 - pbrl */
238 0x80, /* 10/16 - afei */
239 0x01, /* 11/17 - afeii */
240 0x9f, /* 12/18 - llic */
241 0x9f, /* 13/19 - rlic */
242 0x00, /* 14/20 - tlb */
243 0x00, /* 15/21 - thb */
244 0x00, /* 16/22 - la3mic/reserved */
245 0x00, /* 17/23 - ra3mic/reserved */
246 0x00, /* 18/24 - afs */
247 0x00, /* 19/25 - lamoc/version */
248 0x00, /* 1a/26 - mioc */
249 0x00, /* 1b/27 - ramoc/reserved */
250 0x20, /* 1c/28 - cdfr */
251 0x00, /* 1d/29 - res4 */
252 0x00, /* 1e/30 - cbru */
253 0x00, /* 1f/31 - cbrl */
254 };
255
__cs4231_readb(struct snd_cs4231 * cp,void __iomem * reg_addr)256 static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
257 {
258 if (cp->flags & CS4231_FLAG_EBUS)
259 return readb(reg_addr);
260 else
261 return sbus_readb(reg_addr);
262 }
263
__cs4231_writeb(struct snd_cs4231 * cp,u8 val,void __iomem * reg_addr)264 static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val,
265 void __iomem *reg_addr)
266 {
267 if (cp->flags & CS4231_FLAG_EBUS)
268 return writeb(val, reg_addr);
269 else
270 return sbus_writeb(val, reg_addr);
271 }
272
273 /*
274 * Basic I/O functions
275 */
276
snd_cs4231_ready(struct snd_cs4231 * chip)277 static void snd_cs4231_ready(struct snd_cs4231 *chip)
278 {
279 int timeout;
280
281 for (timeout = 250; timeout > 0; timeout--) {
282 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
283 if ((val & CS4231_INIT) == 0)
284 break;
285 udelay(100);
286 }
287 }
288
snd_cs4231_dout(struct snd_cs4231 * chip,unsigned char reg,unsigned char value)289 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg,
290 unsigned char value)
291 {
292 snd_cs4231_ready(chip);
293 #ifdef CONFIG_SND_DEBUG
294 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
295 dev_dbg(chip->card->dev,
296 "out: auto calibration time out - reg = 0x%x, value = 0x%x\n",
297 reg, value);
298 #endif
299 __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
300 wmb();
301 __cs4231_writeb(chip, value, CS4231U(chip, REG));
302 mb();
303 }
304
snd_cs4231_outm(struct snd_cs4231 * chip,unsigned char reg,unsigned char mask,unsigned char value)305 static inline void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
306 unsigned char mask, unsigned char value)
307 {
308 unsigned char tmp = (chip->image[reg] & mask) | value;
309
310 chip->image[reg] = tmp;
311 if (!chip->calibrate_mute)
312 snd_cs4231_dout(chip, reg, tmp);
313 }
314
snd_cs4231_out(struct snd_cs4231 * chip,unsigned char reg,unsigned char value)315 static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg,
316 unsigned char value)
317 {
318 snd_cs4231_dout(chip, reg, value);
319 chip->image[reg] = value;
320 mb();
321 }
322
snd_cs4231_in(struct snd_cs4231 * chip,unsigned char reg)323 static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
324 {
325 snd_cs4231_ready(chip);
326 #ifdef CONFIG_SND_DEBUG
327 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
328 dev_dbg(chip->card->dev,
329 "in: auto calibration time out - reg = 0x%x\n",
330 reg);
331 #endif
332 __cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
333 mb();
334 return __cs4231_readb(chip, CS4231U(chip, REG));
335 }
336
337 /*
338 * CS4231 detection / MCE routines
339 */
340
snd_cs4231_busy_wait(struct snd_cs4231 * chip)341 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
342 {
343 int timeout;
344
345 /* looks like this sequence is proper for CS4231A chip (GUS MAX) */
346 for (timeout = 5; timeout > 0; timeout--)
347 __cs4231_readb(chip, CS4231U(chip, REGSEL));
348
349 /* end of cleanup sequence */
350 for (timeout = 500; timeout > 0; timeout--) {
351 int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
352 if ((val & CS4231_INIT) == 0)
353 break;
354 msleep(1);
355 }
356 }
357
snd_cs4231_mce_up(struct snd_cs4231 * chip)358 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
359 {
360 unsigned long flags;
361 int timeout;
362
363 spin_lock_irqsave(&chip->lock, flags);
364 snd_cs4231_ready(chip);
365 #ifdef CONFIG_SND_DEBUG
366 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
367 dev_dbg(chip->card->dev,
368 "mce_up - auto calibration time out (0)\n");
369 #endif
370 chip->mce_bit |= CS4231_MCE;
371 timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
372 if (timeout == 0x80)
373 dev_dbg(chip->card->dev,
374 "mce_up [%p]: serious init problem - codec still busy\n",
375 chip->port);
376 if (!(timeout & CS4231_MCE))
377 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
378 CS4231U(chip, REGSEL));
379 spin_unlock_irqrestore(&chip->lock, flags);
380 }
381
snd_cs4231_mce_down(struct snd_cs4231 * chip)382 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
383 {
384 unsigned long flags, timeout;
385 int reg;
386
387 snd_cs4231_busy_wait(chip);
388 spin_lock_irqsave(&chip->lock, flags);
389 #ifdef CONFIG_SND_DEBUG
390 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
391 dev_dbg(chip->card->dev,
392 "mce_down [%p] - auto calibration time out (0)\n",
393 CS4231U(chip, REGSEL));
394 #endif
395 chip->mce_bit &= ~CS4231_MCE;
396 reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
397 __cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
398 CS4231U(chip, REGSEL));
399 if (reg == 0x80)
400 dev_dbg(chip->card->dev,
401 "mce_down [%p]: serious init problem - codec still busy\n",
402 chip->port);
403 if ((reg & CS4231_MCE) == 0) {
404 spin_unlock_irqrestore(&chip->lock, flags);
405 return;
406 }
407
408 /*
409 * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
410 */
411 timeout = jiffies + msecs_to_jiffies(250);
412 do {
413 spin_unlock_irqrestore(&chip->lock, flags);
414 msleep(1);
415 spin_lock_irqsave(&chip->lock, flags);
416 reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
417 reg &= CS4231_CALIB_IN_PROGRESS;
418 } while (reg && time_before(jiffies, timeout));
419 spin_unlock_irqrestore(&chip->lock, flags);
420
421 if (reg)
422 dev_err(chip->card->dev,
423 "mce_down - auto calibration time out (2)\n");
424 }
425
snd_cs4231_advance_dma(struct cs4231_dma_control * dma_cont,struct snd_pcm_substream * substream,unsigned int * periods_sent)426 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
427 struct snd_pcm_substream *substream,
428 unsigned int *periods_sent)
429 {
430 struct snd_pcm_runtime *runtime = substream->runtime;
431
432 while (1) {
433 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
434 unsigned int offset = period_size * (*periods_sent);
435
436 if (WARN_ON(period_size >= (1 << 24)))
437 return;
438
439 if (dma_cont->request(dma_cont,
440 runtime->dma_addr + offset, period_size))
441 return;
442 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
443 }
444 }
445
cs4231_dma_trigger(struct snd_pcm_substream * substream,unsigned int what,int on)446 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
447 unsigned int what, int on)
448 {
449 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
450 struct cs4231_dma_control *dma_cont;
451
452 if (what & CS4231_PLAYBACK_ENABLE) {
453 dma_cont = &chip->p_dma;
454 if (on) {
455 dma_cont->prepare(dma_cont, 0);
456 dma_cont->enable(dma_cont, 1);
457 snd_cs4231_advance_dma(dma_cont,
458 chip->playback_substream,
459 &chip->p_periods_sent);
460 } else {
461 dma_cont->enable(dma_cont, 0);
462 }
463 }
464 if (what & CS4231_RECORD_ENABLE) {
465 dma_cont = &chip->c_dma;
466 if (on) {
467 dma_cont->prepare(dma_cont, 1);
468 dma_cont->enable(dma_cont, 1);
469 snd_cs4231_advance_dma(dma_cont,
470 chip->capture_substream,
471 &chip->c_periods_sent);
472 } else {
473 dma_cont->enable(dma_cont, 0);
474 }
475 }
476 }
477
snd_cs4231_trigger(struct snd_pcm_substream * substream,int cmd)478 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
479 {
480 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
481 int result = 0;
482
483 switch (cmd) {
484 case SNDRV_PCM_TRIGGER_START:
485 case SNDRV_PCM_TRIGGER_STOP:
486 {
487 unsigned int what = 0;
488 struct snd_pcm_substream *s;
489 unsigned long flags;
490
491 snd_pcm_group_for_each_entry(s, substream) {
492 if (s == chip->playback_substream) {
493 what |= CS4231_PLAYBACK_ENABLE;
494 snd_pcm_trigger_done(s, substream);
495 } else if (s == chip->capture_substream) {
496 what |= CS4231_RECORD_ENABLE;
497 snd_pcm_trigger_done(s, substream);
498 }
499 }
500
501 spin_lock_irqsave(&chip->lock, flags);
502 if (cmd == SNDRV_PCM_TRIGGER_START) {
503 cs4231_dma_trigger(substream, what, 1);
504 chip->image[CS4231_IFACE_CTRL] |= what;
505 } else {
506 cs4231_dma_trigger(substream, what, 0);
507 chip->image[CS4231_IFACE_CTRL] &= ~what;
508 }
509 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
510 chip->image[CS4231_IFACE_CTRL]);
511 spin_unlock_irqrestore(&chip->lock, flags);
512 break;
513 }
514 default:
515 result = -EINVAL;
516 break;
517 }
518
519 return result;
520 }
521
522 /*
523 * CODEC I/O
524 */
525
snd_cs4231_get_rate(unsigned int rate)526 static unsigned char snd_cs4231_get_rate(unsigned int rate)
527 {
528 int i;
529
530 for (i = 0; i < 14; i++)
531 if (rate == rates[i])
532 return freq_bits[i];
533
534 return freq_bits[13];
535 }
536
snd_cs4231_get_format(struct snd_cs4231 * chip,int format,int channels)537 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
538 int channels)
539 {
540 unsigned char rformat;
541
542 rformat = CS4231_LINEAR_8;
543 switch (format) {
544 case SNDRV_PCM_FORMAT_MU_LAW:
545 rformat = CS4231_ULAW_8;
546 break;
547 case SNDRV_PCM_FORMAT_A_LAW:
548 rformat = CS4231_ALAW_8;
549 break;
550 case SNDRV_PCM_FORMAT_S16_LE:
551 rformat = CS4231_LINEAR_16;
552 break;
553 case SNDRV_PCM_FORMAT_S16_BE:
554 rformat = CS4231_LINEAR_16_BIG;
555 break;
556 case SNDRV_PCM_FORMAT_IMA_ADPCM:
557 rformat = CS4231_ADPCM_16;
558 break;
559 }
560 if (channels > 1)
561 rformat |= CS4231_STEREO;
562 return rformat;
563 }
564
snd_cs4231_calibrate_mute(struct snd_cs4231 * chip,int mute)565 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
566 {
567 unsigned long flags;
568
569 mute = mute ? 1 : 0;
570 spin_lock_irqsave(&chip->lock, flags);
571 if (chip->calibrate_mute == mute) {
572 spin_unlock_irqrestore(&chip->lock, flags);
573 return;
574 }
575 if (!mute) {
576 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
577 chip->image[CS4231_LEFT_INPUT]);
578 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
579 chip->image[CS4231_RIGHT_INPUT]);
580 snd_cs4231_dout(chip, CS4231_LOOPBACK,
581 chip->image[CS4231_LOOPBACK]);
582 }
583 snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
584 mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
585 snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
586 mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
587 snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
588 mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
589 snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
590 mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
591 snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
592 mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
593 snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
594 mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
595 snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
596 mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
597 snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
598 mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
599 snd_cs4231_dout(chip, CS4231_MONO_CTRL,
600 mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
601 chip->calibrate_mute = mute;
602 spin_unlock_irqrestore(&chip->lock, flags);
603 }
604
snd_cs4231_playback_format(struct snd_cs4231 * chip,struct snd_pcm_hw_params * params,unsigned char pdfr)605 static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
606 struct snd_pcm_hw_params *params,
607 unsigned char pdfr)
608 {
609 unsigned long flags;
610
611 mutex_lock(&chip->mce_mutex);
612 snd_cs4231_calibrate_mute(chip, 1);
613
614 snd_cs4231_mce_up(chip);
615
616 spin_lock_irqsave(&chip->lock, flags);
617 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
618 (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
619 (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
620 pdfr);
621 spin_unlock_irqrestore(&chip->lock, flags);
622
623 snd_cs4231_mce_down(chip);
624
625 snd_cs4231_calibrate_mute(chip, 0);
626 mutex_unlock(&chip->mce_mutex);
627 }
628
snd_cs4231_capture_format(struct snd_cs4231 * chip,struct snd_pcm_hw_params * params,unsigned char cdfr)629 static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
630 struct snd_pcm_hw_params *params,
631 unsigned char cdfr)
632 {
633 unsigned long flags;
634
635 mutex_lock(&chip->mce_mutex);
636 snd_cs4231_calibrate_mute(chip, 1);
637
638 snd_cs4231_mce_up(chip);
639
640 spin_lock_irqsave(&chip->lock, flags);
641 if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
642 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
643 ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
644 (cdfr & 0x0f));
645 spin_unlock_irqrestore(&chip->lock, flags);
646 snd_cs4231_mce_down(chip);
647 snd_cs4231_mce_up(chip);
648 spin_lock_irqsave(&chip->lock, flags);
649 }
650 snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
651 spin_unlock_irqrestore(&chip->lock, flags);
652
653 snd_cs4231_mce_down(chip);
654
655 snd_cs4231_calibrate_mute(chip, 0);
656 mutex_unlock(&chip->mce_mutex);
657 }
658
659 /*
660 * Timer interface
661 */
662
snd_cs4231_timer_resolution(struct snd_timer * timer)663 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
664 {
665 struct snd_cs4231 *chip = snd_timer_chip(timer);
666
667 return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
668 }
669
snd_cs4231_timer_start(struct snd_timer * timer)670 static int snd_cs4231_timer_start(struct snd_timer *timer)
671 {
672 unsigned long flags;
673 unsigned int ticks;
674 struct snd_cs4231 *chip = snd_timer_chip(timer);
675
676 spin_lock_irqsave(&chip->lock, flags);
677 ticks = timer->sticks;
678 if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
679 (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
680 (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
681 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
682 chip->image[CS4231_TIMER_HIGH] =
683 (unsigned char) (ticks >> 8));
684 snd_cs4231_out(chip, CS4231_TIMER_LOW,
685 chip->image[CS4231_TIMER_LOW] =
686 (unsigned char) ticks);
687 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
688 chip->image[CS4231_ALT_FEATURE_1] |
689 CS4231_TIMER_ENABLE);
690 }
691 spin_unlock_irqrestore(&chip->lock, flags);
692
693 return 0;
694 }
695
snd_cs4231_timer_stop(struct snd_timer * timer)696 static int snd_cs4231_timer_stop(struct snd_timer *timer)
697 {
698 unsigned long flags;
699 struct snd_cs4231 *chip = snd_timer_chip(timer);
700
701 spin_lock_irqsave(&chip->lock, flags);
702 chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
703 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
704 chip->image[CS4231_ALT_FEATURE_1]);
705 spin_unlock_irqrestore(&chip->lock, flags);
706
707 return 0;
708 }
709
snd_cs4231_init(struct snd_cs4231 * chip)710 static void snd_cs4231_init(struct snd_cs4231 *chip)
711 {
712 unsigned long flags;
713
714 snd_cs4231_mce_down(chip);
715
716 #ifdef SNDRV_DEBUG_MCE
717 pr_debug("init: (1)\n");
718 #endif
719 snd_cs4231_mce_up(chip);
720 spin_lock_irqsave(&chip->lock, flags);
721 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
722 CS4231_PLAYBACK_PIO |
723 CS4231_RECORD_ENABLE |
724 CS4231_RECORD_PIO |
725 CS4231_CALIB_MODE);
726 chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
727 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
728 spin_unlock_irqrestore(&chip->lock, flags);
729 snd_cs4231_mce_down(chip);
730
731 #ifdef SNDRV_DEBUG_MCE
732 pr_debug("init: (2)\n");
733 #endif
734
735 snd_cs4231_mce_up(chip);
736 spin_lock_irqsave(&chip->lock, flags);
737 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
738 chip->image[CS4231_ALT_FEATURE_1]);
739 spin_unlock_irqrestore(&chip->lock, flags);
740 snd_cs4231_mce_down(chip);
741
742 #ifdef SNDRV_DEBUG_MCE
743 pr_debug("init: (3) - afei = 0x%x\n",
744 chip->image[CS4231_ALT_FEATURE_1]);
745 #endif
746
747 spin_lock_irqsave(&chip->lock, flags);
748 snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
749 chip->image[CS4231_ALT_FEATURE_2]);
750 spin_unlock_irqrestore(&chip->lock, flags);
751
752 snd_cs4231_mce_up(chip);
753 spin_lock_irqsave(&chip->lock, flags);
754 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
755 chip->image[CS4231_PLAYBK_FORMAT]);
756 spin_unlock_irqrestore(&chip->lock, flags);
757 snd_cs4231_mce_down(chip);
758
759 #ifdef SNDRV_DEBUG_MCE
760 pr_debug("init: (4)\n");
761 #endif
762
763 snd_cs4231_mce_up(chip);
764 spin_lock_irqsave(&chip->lock, flags);
765 snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
766 spin_unlock_irqrestore(&chip->lock, flags);
767 snd_cs4231_mce_down(chip);
768
769 #ifdef SNDRV_DEBUG_MCE
770 pr_debug("init: (5)\n");
771 #endif
772 }
773
snd_cs4231_open(struct snd_cs4231 * chip,unsigned int mode)774 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
775 {
776 unsigned long flags;
777
778 mutex_lock(&chip->open_mutex);
779 if ((chip->mode & mode)) {
780 mutex_unlock(&chip->open_mutex);
781 return -EAGAIN;
782 }
783 if (chip->mode & CS4231_MODE_OPEN) {
784 chip->mode |= mode;
785 mutex_unlock(&chip->open_mutex);
786 return 0;
787 }
788 /* ok. now enable and ack CODEC IRQ */
789 spin_lock_irqsave(&chip->lock, flags);
790 snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
791 CS4231_RECORD_IRQ |
792 CS4231_TIMER_IRQ);
793 snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
794 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
795 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
796
797 snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
798 CS4231_RECORD_IRQ |
799 CS4231_TIMER_IRQ);
800 snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
801
802 spin_unlock_irqrestore(&chip->lock, flags);
803
804 chip->mode = mode;
805 mutex_unlock(&chip->open_mutex);
806 return 0;
807 }
808
snd_cs4231_close(struct snd_cs4231 * chip,unsigned int mode)809 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
810 {
811 unsigned long flags;
812
813 mutex_lock(&chip->open_mutex);
814 chip->mode &= ~mode;
815 if (chip->mode & CS4231_MODE_OPEN) {
816 mutex_unlock(&chip->open_mutex);
817 return;
818 }
819 snd_cs4231_calibrate_mute(chip, 1);
820
821 /* disable IRQ */
822 spin_lock_irqsave(&chip->lock, flags);
823 snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
824 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
825 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
826
827 /* now disable record & playback */
828
829 if (chip->image[CS4231_IFACE_CTRL] &
830 (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
831 CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
832 spin_unlock_irqrestore(&chip->lock, flags);
833 snd_cs4231_mce_up(chip);
834 spin_lock_irqsave(&chip->lock, flags);
835 chip->image[CS4231_IFACE_CTRL] &=
836 ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
837 CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
838 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
839 chip->image[CS4231_IFACE_CTRL]);
840 spin_unlock_irqrestore(&chip->lock, flags);
841 snd_cs4231_mce_down(chip);
842 spin_lock_irqsave(&chip->lock, flags);
843 }
844
845 /* clear IRQ again */
846 snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
847 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
848 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS)); /* clear IRQ */
849 spin_unlock_irqrestore(&chip->lock, flags);
850
851 snd_cs4231_calibrate_mute(chip, 0);
852
853 chip->mode = 0;
854 mutex_unlock(&chip->open_mutex);
855 }
856
857 /*
858 * timer open/close
859 */
860
snd_cs4231_timer_open(struct snd_timer * timer)861 static int snd_cs4231_timer_open(struct snd_timer *timer)
862 {
863 struct snd_cs4231 *chip = snd_timer_chip(timer);
864 snd_cs4231_open(chip, CS4231_MODE_TIMER);
865 return 0;
866 }
867
snd_cs4231_timer_close(struct snd_timer * timer)868 static int snd_cs4231_timer_close(struct snd_timer *timer)
869 {
870 struct snd_cs4231 *chip = snd_timer_chip(timer);
871 snd_cs4231_close(chip, CS4231_MODE_TIMER);
872 return 0;
873 }
874
875 static const struct snd_timer_hardware snd_cs4231_timer_table = {
876 .flags = SNDRV_TIMER_HW_AUTO,
877 .resolution = 9945,
878 .ticks = 65535,
879 .open = snd_cs4231_timer_open,
880 .close = snd_cs4231_timer_close,
881 .c_resolution = snd_cs4231_timer_resolution,
882 .start = snd_cs4231_timer_start,
883 .stop = snd_cs4231_timer_stop,
884 };
885
886 /*
887 * ok.. exported functions..
888 */
889
snd_cs4231_playback_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)890 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
891 struct snd_pcm_hw_params *hw_params)
892 {
893 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
894 unsigned char new_pdfr;
895
896 new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
897 params_channels(hw_params)) |
898 snd_cs4231_get_rate(params_rate(hw_params));
899 snd_cs4231_playback_format(chip, hw_params, new_pdfr);
900
901 return 0;
902 }
903
snd_cs4231_playback_prepare(struct snd_pcm_substream * substream)904 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
905 {
906 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
907 struct snd_pcm_runtime *runtime = substream->runtime;
908 unsigned long flags;
909 int ret = 0;
910
911 spin_lock_irqsave(&chip->lock, flags);
912
913 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
914 CS4231_PLAYBACK_PIO);
915
916 if (WARN_ON(runtime->period_size > 0xffff + 1)) {
917 ret = -EINVAL;
918 goto out;
919 }
920
921 chip->p_periods_sent = 0;
922
923 out:
924 spin_unlock_irqrestore(&chip->lock, flags);
925
926 return ret;
927 }
928
snd_cs4231_capture_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * hw_params)929 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
930 struct snd_pcm_hw_params *hw_params)
931 {
932 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
933 unsigned char new_cdfr;
934
935 new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
936 params_channels(hw_params)) |
937 snd_cs4231_get_rate(params_rate(hw_params));
938 snd_cs4231_capture_format(chip, hw_params, new_cdfr);
939
940 return 0;
941 }
942
snd_cs4231_capture_prepare(struct snd_pcm_substream * substream)943 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
944 {
945 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
946 unsigned long flags;
947
948 spin_lock_irqsave(&chip->lock, flags);
949 chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
950 CS4231_RECORD_PIO);
951
952
953 chip->c_periods_sent = 0;
954 spin_unlock_irqrestore(&chip->lock, flags);
955
956 return 0;
957 }
958
snd_cs4231_overrange(struct snd_cs4231 * chip)959 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
960 {
961 unsigned long flags;
962 unsigned char res;
963
964 spin_lock_irqsave(&chip->lock, flags);
965 res = snd_cs4231_in(chip, CS4231_TEST_INIT);
966 spin_unlock_irqrestore(&chip->lock, flags);
967
968 /* detect overrange only above 0dB; may be user selectable? */
969 if (res & (0x08 | 0x02))
970 chip->capture_substream->runtime->overrange++;
971 }
972
snd_cs4231_play_callback(struct snd_cs4231 * chip)973 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
974 {
975 if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
976 snd_pcm_period_elapsed(chip->playback_substream);
977 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
978 &chip->p_periods_sent);
979 }
980 }
981
snd_cs4231_capture_callback(struct snd_cs4231 * chip)982 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
983 {
984 if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
985 snd_pcm_period_elapsed(chip->capture_substream);
986 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
987 &chip->c_periods_sent);
988 }
989 }
990
snd_cs4231_playback_pointer(struct snd_pcm_substream * substream)991 static snd_pcm_uframes_t snd_cs4231_playback_pointer(
992 struct snd_pcm_substream *substream)
993 {
994 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
995 struct cs4231_dma_control *dma_cont = &chip->p_dma;
996 size_t ptr;
997
998 if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
999 return 0;
1000 ptr = dma_cont->address(dma_cont);
1001 if (ptr != 0)
1002 ptr -= substream->runtime->dma_addr;
1003
1004 return bytes_to_frames(substream->runtime, ptr);
1005 }
1006
snd_cs4231_capture_pointer(struct snd_pcm_substream * substream)1007 static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1008 struct snd_pcm_substream *substream)
1009 {
1010 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1011 struct cs4231_dma_control *dma_cont = &chip->c_dma;
1012 size_t ptr;
1013
1014 if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1015 return 0;
1016 ptr = dma_cont->address(dma_cont);
1017 if (ptr != 0)
1018 ptr -= substream->runtime->dma_addr;
1019
1020 return bytes_to_frames(substream->runtime, ptr);
1021 }
1022
snd_cs4231_probe(struct snd_cs4231 * chip)1023 static int snd_cs4231_probe(struct snd_cs4231 *chip)
1024 {
1025 unsigned long flags;
1026 int i;
1027 int id = 0;
1028 int vers = 0;
1029 unsigned char *ptr;
1030
1031 for (i = 0; i < 50; i++) {
1032 mb();
1033 if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1034 msleep(2);
1035 else {
1036 spin_lock_irqsave(&chip->lock, flags);
1037 snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1038 id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1039 vers = snd_cs4231_in(chip, CS4231_VERSION);
1040 spin_unlock_irqrestore(&chip->lock, flags);
1041 if (id == 0x0a)
1042 break; /* this is valid value */
1043 }
1044 }
1045 dev_dbg(chip->card->dev,
1046 "cs4231: port = %p, id = 0x%x\n", chip->port, id);
1047 if (id != 0x0a)
1048 return -ENODEV; /* no valid device found */
1049
1050 spin_lock_irqsave(&chip->lock, flags);
1051
1052 /* clear any pendings IRQ */
1053 __cs4231_readb(chip, CS4231U(chip, STATUS));
1054 __cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1055 mb();
1056
1057 spin_unlock_irqrestore(&chip->lock, flags);
1058
1059 chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1060 chip->image[CS4231_IFACE_CTRL] =
1061 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1062 chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1063 chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1064 if (vers & 0x20)
1065 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1066
1067 ptr = (unsigned char *) &chip->image;
1068
1069 snd_cs4231_mce_down(chip);
1070
1071 spin_lock_irqsave(&chip->lock, flags);
1072
1073 for (i = 0; i < 32; i++) /* ok.. fill all CS4231 registers */
1074 snd_cs4231_out(chip, i, *ptr++);
1075
1076 spin_unlock_irqrestore(&chip->lock, flags);
1077
1078 snd_cs4231_mce_up(chip);
1079
1080 snd_cs4231_mce_down(chip);
1081
1082 mdelay(2);
1083
1084 return 0; /* all things are ok.. */
1085 }
1086
1087 static const struct snd_pcm_hardware snd_cs4231_playback = {
1088 .info = SNDRV_PCM_INFO_MMAP |
1089 SNDRV_PCM_INFO_INTERLEAVED |
1090 SNDRV_PCM_INFO_MMAP_VALID |
1091 SNDRV_PCM_INFO_SYNC_START,
1092 .formats = SNDRV_PCM_FMTBIT_MU_LAW |
1093 SNDRV_PCM_FMTBIT_A_LAW |
1094 SNDRV_PCM_FMTBIT_IMA_ADPCM |
1095 SNDRV_PCM_FMTBIT_U8 |
1096 SNDRV_PCM_FMTBIT_S16_LE |
1097 SNDRV_PCM_FMTBIT_S16_BE,
1098 .rates = SNDRV_PCM_RATE_KNOT |
1099 SNDRV_PCM_RATE_8000_48000,
1100 .rate_min = 5510,
1101 .rate_max = 48000,
1102 .channels_min = 1,
1103 .channels_max = 2,
1104 .buffer_bytes_max = 32 * 1024,
1105 .period_bytes_min = 64,
1106 .period_bytes_max = 32 * 1024,
1107 .periods_min = 1,
1108 .periods_max = 1024,
1109 };
1110
1111 static const struct snd_pcm_hardware snd_cs4231_capture = {
1112 .info = SNDRV_PCM_INFO_MMAP |
1113 SNDRV_PCM_INFO_INTERLEAVED |
1114 SNDRV_PCM_INFO_MMAP_VALID |
1115 SNDRV_PCM_INFO_SYNC_START,
1116 .formats = SNDRV_PCM_FMTBIT_MU_LAW |
1117 SNDRV_PCM_FMTBIT_A_LAW |
1118 SNDRV_PCM_FMTBIT_IMA_ADPCM |
1119 SNDRV_PCM_FMTBIT_U8 |
1120 SNDRV_PCM_FMTBIT_S16_LE |
1121 SNDRV_PCM_FMTBIT_S16_BE,
1122 .rates = SNDRV_PCM_RATE_KNOT |
1123 SNDRV_PCM_RATE_8000_48000,
1124 .rate_min = 5510,
1125 .rate_max = 48000,
1126 .channels_min = 1,
1127 .channels_max = 2,
1128 .buffer_bytes_max = 32 * 1024,
1129 .period_bytes_min = 64,
1130 .period_bytes_max = 32 * 1024,
1131 .periods_min = 1,
1132 .periods_max = 1024,
1133 };
1134
snd_cs4231_playback_open(struct snd_pcm_substream * substream)1135 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1136 {
1137 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1138 struct snd_pcm_runtime *runtime = substream->runtime;
1139 int err;
1140
1141 runtime->hw = snd_cs4231_playback;
1142
1143 err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1144 if (err < 0)
1145 return err;
1146 chip->playback_substream = substream;
1147 chip->p_periods_sent = 0;
1148 snd_pcm_set_sync(substream);
1149 snd_cs4231_xrate(runtime);
1150
1151 return 0;
1152 }
1153
snd_cs4231_capture_open(struct snd_pcm_substream * substream)1154 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1155 {
1156 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1157 struct snd_pcm_runtime *runtime = substream->runtime;
1158 int err;
1159
1160 runtime->hw = snd_cs4231_capture;
1161
1162 err = snd_cs4231_open(chip, CS4231_MODE_RECORD);
1163 if (err < 0)
1164 return err;
1165 chip->capture_substream = substream;
1166 chip->c_periods_sent = 0;
1167 snd_pcm_set_sync(substream);
1168 snd_cs4231_xrate(runtime);
1169
1170 return 0;
1171 }
1172
snd_cs4231_playback_close(struct snd_pcm_substream * substream)1173 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1174 {
1175 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1176
1177 snd_cs4231_close(chip, CS4231_MODE_PLAY);
1178 chip->playback_substream = NULL;
1179
1180 return 0;
1181 }
1182
snd_cs4231_capture_close(struct snd_pcm_substream * substream)1183 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1184 {
1185 struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1186
1187 snd_cs4231_close(chip, CS4231_MODE_RECORD);
1188 chip->capture_substream = NULL;
1189
1190 return 0;
1191 }
1192
1193 /* XXX We can do some power-management, in particular on EBUS using
1194 * XXX the audio AUXIO register...
1195 */
1196
1197 static const struct snd_pcm_ops snd_cs4231_playback_ops = {
1198 .open = snd_cs4231_playback_open,
1199 .close = snd_cs4231_playback_close,
1200 .hw_params = snd_cs4231_playback_hw_params,
1201 .prepare = snd_cs4231_playback_prepare,
1202 .trigger = snd_cs4231_trigger,
1203 .pointer = snd_cs4231_playback_pointer,
1204 };
1205
1206 static const struct snd_pcm_ops snd_cs4231_capture_ops = {
1207 .open = snd_cs4231_capture_open,
1208 .close = snd_cs4231_capture_close,
1209 .hw_params = snd_cs4231_capture_hw_params,
1210 .prepare = snd_cs4231_capture_prepare,
1211 .trigger = snd_cs4231_trigger,
1212 .pointer = snd_cs4231_capture_pointer,
1213 };
1214
snd_cs4231_pcm(struct snd_card * card)1215 static int snd_cs4231_pcm(struct snd_card *card)
1216 {
1217 struct snd_cs4231 *chip = card->private_data;
1218 struct snd_pcm *pcm;
1219 int err;
1220
1221 err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1222 if (err < 0)
1223 return err;
1224
1225 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1226 &snd_cs4231_playback_ops);
1227 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1228 &snd_cs4231_capture_ops);
1229
1230 /* global setup */
1231 pcm->private_data = chip;
1232 pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1233 strcpy(pcm->name, "CS4231");
1234
1235 snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
1236 &chip->op->dev, 64 * 1024, 128 * 1024);
1237
1238 chip->pcm = pcm;
1239
1240 return 0;
1241 }
1242
snd_cs4231_timer(struct snd_card * card)1243 static int snd_cs4231_timer(struct snd_card *card)
1244 {
1245 struct snd_cs4231 *chip = card->private_data;
1246 struct snd_timer *timer;
1247 struct snd_timer_id tid;
1248 int err;
1249
1250 /* Timer initialization */
1251 tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1252 tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1253 tid.card = card->number;
1254 tid.device = 0;
1255 tid.subdevice = 0;
1256 err = snd_timer_new(card, "CS4231", &tid, &timer);
1257 if (err < 0)
1258 return err;
1259 strcpy(timer->name, "CS4231");
1260 timer->private_data = chip;
1261 timer->hw = snd_cs4231_timer_table;
1262 chip->timer = timer;
1263
1264 return 0;
1265 }
1266
1267 /*
1268 * MIXER part
1269 */
1270
snd_cs4231_info_mux(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1271 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1272 struct snd_ctl_elem_info *uinfo)
1273 {
1274 static const char * const texts[4] = {
1275 "Line", "CD", "Mic", "Mix"
1276 };
1277
1278 return snd_ctl_enum_info(uinfo, 2, 4, texts);
1279 }
1280
snd_cs4231_get_mux(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1281 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1282 struct snd_ctl_elem_value *ucontrol)
1283 {
1284 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1285 unsigned long flags;
1286
1287 spin_lock_irqsave(&chip->lock, flags);
1288 ucontrol->value.enumerated.item[0] =
1289 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1290 ucontrol->value.enumerated.item[1] =
1291 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1292 spin_unlock_irqrestore(&chip->lock, flags);
1293
1294 return 0;
1295 }
1296
snd_cs4231_put_mux(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1297 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1298 struct snd_ctl_elem_value *ucontrol)
1299 {
1300 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1301 unsigned long flags;
1302 unsigned short left, right;
1303 int change;
1304
1305 if (ucontrol->value.enumerated.item[0] > 3 ||
1306 ucontrol->value.enumerated.item[1] > 3)
1307 return -EINVAL;
1308 left = ucontrol->value.enumerated.item[0] << 6;
1309 right = ucontrol->value.enumerated.item[1] << 6;
1310
1311 spin_lock_irqsave(&chip->lock, flags);
1312
1313 left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1314 right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1315 change = left != chip->image[CS4231_LEFT_INPUT] ||
1316 right != chip->image[CS4231_RIGHT_INPUT];
1317 snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1318 snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1319
1320 spin_unlock_irqrestore(&chip->lock, flags);
1321
1322 return change;
1323 }
1324
snd_cs4231_info_single(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1325 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1326 struct snd_ctl_elem_info *uinfo)
1327 {
1328 int mask = (kcontrol->private_value >> 16) & 0xff;
1329
1330 uinfo->type = (mask == 1) ?
1331 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1332 uinfo->count = 1;
1333 uinfo->value.integer.min = 0;
1334 uinfo->value.integer.max = mask;
1335
1336 return 0;
1337 }
1338
snd_cs4231_get_single(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1339 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1340 struct snd_ctl_elem_value *ucontrol)
1341 {
1342 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1343 unsigned long flags;
1344 int reg = kcontrol->private_value & 0xff;
1345 int shift = (kcontrol->private_value >> 8) & 0xff;
1346 int mask = (kcontrol->private_value >> 16) & 0xff;
1347 int invert = (kcontrol->private_value >> 24) & 0xff;
1348
1349 spin_lock_irqsave(&chip->lock, flags);
1350
1351 ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1352
1353 spin_unlock_irqrestore(&chip->lock, flags);
1354
1355 if (invert)
1356 ucontrol->value.integer.value[0] =
1357 (mask - ucontrol->value.integer.value[0]);
1358
1359 return 0;
1360 }
1361
snd_cs4231_put_single(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1362 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1363 struct snd_ctl_elem_value *ucontrol)
1364 {
1365 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1366 unsigned long flags;
1367 int reg = kcontrol->private_value & 0xff;
1368 int shift = (kcontrol->private_value >> 8) & 0xff;
1369 int mask = (kcontrol->private_value >> 16) & 0xff;
1370 int invert = (kcontrol->private_value >> 24) & 0xff;
1371 int change;
1372 unsigned short val;
1373
1374 val = (ucontrol->value.integer.value[0] & mask);
1375 if (invert)
1376 val = mask - val;
1377 val <<= shift;
1378
1379 spin_lock_irqsave(&chip->lock, flags);
1380
1381 val = (chip->image[reg] & ~(mask << shift)) | val;
1382 change = val != chip->image[reg];
1383 snd_cs4231_out(chip, reg, val);
1384
1385 spin_unlock_irqrestore(&chip->lock, flags);
1386
1387 return change;
1388 }
1389
snd_cs4231_info_double(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)1390 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1391 struct snd_ctl_elem_info *uinfo)
1392 {
1393 int mask = (kcontrol->private_value >> 24) & 0xff;
1394
1395 uinfo->type = mask == 1 ?
1396 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1397 uinfo->count = 2;
1398 uinfo->value.integer.min = 0;
1399 uinfo->value.integer.max = mask;
1400
1401 return 0;
1402 }
1403
snd_cs4231_get_double(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1404 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1405 struct snd_ctl_elem_value *ucontrol)
1406 {
1407 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1408 unsigned long flags;
1409 int left_reg = kcontrol->private_value & 0xff;
1410 int right_reg = (kcontrol->private_value >> 8) & 0xff;
1411 int shift_left = (kcontrol->private_value >> 16) & 0x07;
1412 int shift_right = (kcontrol->private_value >> 19) & 0x07;
1413 int mask = (kcontrol->private_value >> 24) & 0xff;
1414 int invert = (kcontrol->private_value >> 22) & 1;
1415
1416 spin_lock_irqsave(&chip->lock, flags);
1417
1418 ucontrol->value.integer.value[0] =
1419 (chip->image[left_reg] >> shift_left) & mask;
1420 ucontrol->value.integer.value[1] =
1421 (chip->image[right_reg] >> shift_right) & mask;
1422
1423 spin_unlock_irqrestore(&chip->lock, flags);
1424
1425 if (invert) {
1426 ucontrol->value.integer.value[0] =
1427 (mask - ucontrol->value.integer.value[0]);
1428 ucontrol->value.integer.value[1] =
1429 (mask - ucontrol->value.integer.value[1]);
1430 }
1431
1432 return 0;
1433 }
1434
snd_cs4231_put_double(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)1435 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1436 struct snd_ctl_elem_value *ucontrol)
1437 {
1438 struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1439 unsigned long flags;
1440 int left_reg = kcontrol->private_value & 0xff;
1441 int right_reg = (kcontrol->private_value >> 8) & 0xff;
1442 int shift_left = (kcontrol->private_value >> 16) & 0x07;
1443 int shift_right = (kcontrol->private_value >> 19) & 0x07;
1444 int mask = (kcontrol->private_value >> 24) & 0xff;
1445 int invert = (kcontrol->private_value >> 22) & 1;
1446 int change;
1447 unsigned short val1, val2;
1448
1449 val1 = ucontrol->value.integer.value[0] & mask;
1450 val2 = ucontrol->value.integer.value[1] & mask;
1451 if (invert) {
1452 val1 = mask - val1;
1453 val2 = mask - val2;
1454 }
1455 val1 <<= shift_left;
1456 val2 <<= shift_right;
1457
1458 spin_lock_irqsave(&chip->lock, flags);
1459
1460 val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1461 val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1462 change = val1 != chip->image[left_reg];
1463 change |= val2 != chip->image[right_reg];
1464 snd_cs4231_out(chip, left_reg, val1);
1465 snd_cs4231_out(chip, right_reg, val2);
1466
1467 spin_unlock_irqrestore(&chip->lock, flags);
1468
1469 return change;
1470 }
1471
1472 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1473 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1474 .info = snd_cs4231_info_single, \
1475 .get = snd_cs4231_get_single, .put = snd_cs4231_put_single, \
1476 .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1477
1478 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1479 shift_right, mask, invert) \
1480 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1481 .info = snd_cs4231_info_double, \
1482 .get = snd_cs4231_get_double, .put = snd_cs4231_put_double, \
1483 .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1484 ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1485
1486 static const struct snd_kcontrol_new snd_cs4231_controls[] = {
1487 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1488 CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1489 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1490 CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1491 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1492 CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1493 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1494 CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1495 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1496 CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1497 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1498 CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1499 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1500 CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1501 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1502 CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1503 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1504 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1505 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1506 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1507 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1508 15, 0),
1509 {
1510 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1511 .name = "Capture Source",
1512 .info = snd_cs4231_info_mux,
1513 .get = snd_cs4231_get_mux,
1514 .put = snd_cs4231_put_mux,
1515 },
1516 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1517 1, 0),
1518 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1519 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1520 /* SPARC specific uses of XCTL{0,1} general purpose outputs. */
1521 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1522 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1523 };
1524
snd_cs4231_mixer(struct snd_card * card)1525 static int snd_cs4231_mixer(struct snd_card *card)
1526 {
1527 struct snd_cs4231 *chip = card->private_data;
1528 int err, idx;
1529
1530 if (snd_BUG_ON(!chip || !chip->pcm))
1531 return -EINVAL;
1532
1533 strcpy(card->mixername, chip->pcm->name);
1534
1535 for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1536 err = snd_ctl_add(card,
1537 snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1538 if (err < 0)
1539 return err;
1540 }
1541 return 0;
1542 }
1543
1544 static int dev;
1545
cs4231_attach_begin(struct platform_device * op,struct snd_card ** rcard)1546 static int cs4231_attach_begin(struct platform_device *op,
1547 struct snd_card **rcard)
1548 {
1549 struct snd_card *card;
1550 struct snd_cs4231 *chip;
1551 int err;
1552
1553 *rcard = NULL;
1554
1555 if (dev >= SNDRV_CARDS)
1556 return -ENODEV;
1557
1558 if (!enable[dev]) {
1559 dev++;
1560 return -ENOENT;
1561 }
1562
1563 err = snd_card_new(&op->dev, index[dev], id[dev], THIS_MODULE,
1564 sizeof(struct snd_cs4231), &card);
1565 if (err < 0)
1566 return err;
1567
1568 strcpy(card->driver, "CS4231");
1569 strcpy(card->shortname, "Sun CS4231");
1570
1571 chip = card->private_data;
1572 chip->card = card;
1573
1574 *rcard = card;
1575 return 0;
1576 }
1577
cs4231_attach_finish(struct snd_card * card)1578 static int cs4231_attach_finish(struct snd_card *card)
1579 {
1580 struct snd_cs4231 *chip = card->private_data;
1581 int err;
1582
1583 err = snd_cs4231_pcm(card);
1584 if (err < 0)
1585 goto out_err;
1586
1587 err = snd_cs4231_mixer(card);
1588 if (err < 0)
1589 goto out_err;
1590
1591 err = snd_cs4231_timer(card);
1592 if (err < 0)
1593 goto out_err;
1594
1595 err = snd_card_register(card);
1596 if (err < 0)
1597 goto out_err;
1598
1599 dev_set_drvdata(&chip->op->dev, chip);
1600
1601 dev++;
1602 return 0;
1603
1604 out_err:
1605 snd_card_free(card);
1606 return err;
1607 }
1608
1609 #ifdef SBUS_SUPPORT
1610
snd_cs4231_sbus_interrupt(int irq,void * dev_id)1611 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1612 {
1613 unsigned long flags;
1614 unsigned char status;
1615 u32 csr;
1616 struct snd_cs4231 *chip = dev_id;
1617
1618 /*This is IRQ is not raised by the cs4231*/
1619 if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1620 return IRQ_NONE;
1621
1622 /* ACK the APC interrupt. */
1623 csr = sbus_readl(chip->port + APCCSR);
1624
1625 sbus_writel(csr, chip->port + APCCSR);
1626
1627 if ((csr & APC_PDMA_READY) &&
1628 (csr & APC_PLAY_INT) &&
1629 (csr & APC_XINT_PNVA) &&
1630 !(csr & APC_XINT_EMPT))
1631 snd_cs4231_play_callback(chip);
1632
1633 if ((csr & APC_CDMA_READY) &&
1634 (csr & APC_CAPT_INT) &&
1635 (csr & APC_XINT_CNVA) &&
1636 !(csr & APC_XINT_EMPT))
1637 snd_cs4231_capture_callback(chip);
1638
1639 status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1640
1641 if (status & CS4231_TIMER_IRQ) {
1642 if (chip->timer)
1643 snd_timer_interrupt(chip->timer, chip->timer->sticks);
1644 }
1645
1646 if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1647 snd_cs4231_overrange(chip);
1648
1649 /* ACK the CS4231 interrupt. */
1650 spin_lock_irqsave(&chip->lock, flags);
1651 snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1652 spin_unlock_irqrestore(&chip->lock, flags);
1653
1654 return IRQ_HANDLED;
1655 }
1656
1657 /*
1658 * SBUS DMA routines
1659 */
1660
sbus_dma_request(struct cs4231_dma_control * dma_cont,dma_addr_t bus_addr,size_t len)1661 static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1662 dma_addr_t bus_addr, size_t len)
1663 {
1664 unsigned long flags;
1665 u32 test, csr;
1666 int err;
1667 struct sbus_dma_info *base = &dma_cont->sbus_info;
1668
1669 if (len >= (1 << 24))
1670 return -EINVAL;
1671 spin_lock_irqsave(&base->lock, flags);
1672 csr = sbus_readl(base->regs + APCCSR);
1673 err = -EINVAL;
1674 test = APC_CDMA_READY;
1675 if (base->dir == APC_PLAY)
1676 test = APC_PDMA_READY;
1677 if (!(csr & test))
1678 goto out;
1679 err = -EBUSY;
1680 test = APC_XINT_CNVA;
1681 if (base->dir == APC_PLAY)
1682 test = APC_XINT_PNVA;
1683 if (!(csr & test))
1684 goto out;
1685 err = 0;
1686 sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1687 sbus_writel(len, base->regs + base->dir + APCNC);
1688 out:
1689 spin_unlock_irqrestore(&base->lock, flags);
1690 return err;
1691 }
1692
sbus_dma_prepare(struct cs4231_dma_control * dma_cont,int d)1693 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1694 {
1695 unsigned long flags;
1696 u32 csr, test;
1697 struct sbus_dma_info *base = &dma_cont->sbus_info;
1698
1699 spin_lock_irqsave(&base->lock, flags);
1700 csr = sbus_readl(base->regs + APCCSR);
1701 test = APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1702 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1703 APC_XINT_PENA;
1704 if (base->dir == APC_RECORD)
1705 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1706 APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1707 csr |= test;
1708 sbus_writel(csr, base->regs + APCCSR);
1709 spin_unlock_irqrestore(&base->lock, flags);
1710 }
1711
sbus_dma_enable(struct cs4231_dma_control * dma_cont,int on)1712 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1713 {
1714 unsigned long flags;
1715 u32 csr, shift;
1716 struct sbus_dma_info *base = &dma_cont->sbus_info;
1717
1718 spin_lock_irqsave(&base->lock, flags);
1719 if (!on) {
1720 sbus_writel(0, base->regs + base->dir + APCNC);
1721 sbus_writel(0, base->regs + base->dir + APCNVA);
1722 if (base->dir == APC_PLAY) {
1723 sbus_writel(0, base->regs + base->dir + APCC);
1724 sbus_writel(0, base->regs + base->dir + APCVA);
1725 }
1726
1727 udelay(1200);
1728 }
1729 csr = sbus_readl(base->regs + APCCSR);
1730 shift = 0;
1731 if (base->dir == APC_PLAY)
1732 shift = 1;
1733 if (on)
1734 csr &= ~(APC_CPAUSE << shift);
1735 else
1736 csr |= (APC_CPAUSE << shift);
1737 sbus_writel(csr, base->regs + APCCSR);
1738 if (on)
1739 csr |= (APC_CDMA_READY << shift);
1740 else
1741 csr &= ~(APC_CDMA_READY << shift);
1742 sbus_writel(csr, base->regs + APCCSR);
1743
1744 spin_unlock_irqrestore(&base->lock, flags);
1745 }
1746
sbus_dma_addr(struct cs4231_dma_control * dma_cont)1747 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1748 {
1749 struct sbus_dma_info *base = &dma_cont->sbus_info;
1750
1751 return sbus_readl(base->regs + base->dir + APCVA);
1752 }
1753
1754 /*
1755 * Init and exit routines
1756 */
1757
snd_cs4231_sbus_free(struct snd_cs4231 * chip)1758 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1759 {
1760 struct platform_device *op = chip->op;
1761
1762 if (chip->irq[0])
1763 free_irq(chip->irq[0], chip);
1764
1765 if (chip->port)
1766 of_iounmap(&op->resource[0], chip->port, chip->regs_size);
1767
1768 return 0;
1769 }
1770
snd_cs4231_sbus_dev_free(struct snd_device * device)1771 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1772 {
1773 struct snd_cs4231 *cp = device->device_data;
1774
1775 return snd_cs4231_sbus_free(cp);
1776 }
1777
1778 static const struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1779 .dev_free = snd_cs4231_sbus_dev_free,
1780 };
1781
snd_cs4231_sbus_create(struct snd_card * card,struct platform_device * op,int dev)1782 static int snd_cs4231_sbus_create(struct snd_card *card,
1783 struct platform_device *op,
1784 int dev)
1785 {
1786 struct snd_cs4231 *chip = card->private_data;
1787 int err;
1788
1789 spin_lock_init(&chip->lock);
1790 spin_lock_init(&chip->c_dma.sbus_info.lock);
1791 spin_lock_init(&chip->p_dma.sbus_info.lock);
1792 mutex_init(&chip->mce_mutex);
1793 mutex_init(&chip->open_mutex);
1794 chip->op = op;
1795 chip->regs_size = resource_size(&op->resource[0]);
1796 memcpy(&chip->image, &snd_cs4231_original_image,
1797 sizeof(snd_cs4231_original_image));
1798
1799 chip->port = of_ioremap(&op->resource[0], 0,
1800 chip->regs_size, "cs4231");
1801 if (!chip->port) {
1802 dev_dbg(chip->card->dev,
1803 "cs4231-%d: Unable to map chip registers.\n", dev);
1804 return -EIO;
1805 }
1806
1807 chip->c_dma.sbus_info.regs = chip->port;
1808 chip->p_dma.sbus_info.regs = chip->port;
1809 chip->c_dma.sbus_info.dir = APC_RECORD;
1810 chip->p_dma.sbus_info.dir = APC_PLAY;
1811
1812 chip->p_dma.prepare = sbus_dma_prepare;
1813 chip->p_dma.enable = sbus_dma_enable;
1814 chip->p_dma.request = sbus_dma_request;
1815 chip->p_dma.address = sbus_dma_addr;
1816
1817 chip->c_dma.prepare = sbus_dma_prepare;
1818 chip->c_dma.enable = sbus_dma_enable;
1819 chip->c_dma.request = sbus_dma_request;
1820 chip->c_dma.address = sbus_dma_addr;
1821
1822 if (request_irq(op->archdata.irqs[0], snd_cs4231_sbus_interrupt,
1823 IRQF_SHARED, "cs4231", chip)) {
1824 dev_dbg(chip->card->dev,
1825 "cs4231-%d: Unable to grab SBUS IRQ %d\n",
1826 dev, op->archdata.irqs[0]);
1827 snd_cs4231_sbus_free(chip);
1828 return -EBUSY;
1829 }
1830 chip->irq[0] = op->archdata.irqs[0];
1831
1832 if (snd_cs4231_probe(chip) < 0) {
1833 snd_cs4231_sbus_free(chip);
1834 return -ENODEV;
1835 }
1836 snd_cs4231_init(chip);
1837
1838 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1839 chip, &snd_cs4231_sbus_dev_ops);
1840 if (err < 0) {
1841 snd_cs4231_sbus_free(chip);
1842 return err;
1843 }
1844
1845 return 0;
1846 }
1847
cs4231_sbus_probe(struct platform_device * op)1848 static int cs4231_sbus_probe(struct platform_device *op)
1849 {
1850 struct resource *rp = &op->resource[0];
1851 struct snd_card *card;
1852 int err;
1853
1854 err = cs4231_attach_begin(op, &card);
1855 if (err)
1856 return err;
1857
1858 sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1859 card->shortname,
1860 rp->flags & 0xffL,
1861 (unsigned long long)rp->start,
1862 op->archdata.irqs[0]);
1863
1864 err = snd_cs4231_sbus_create(card, op, dev);
1865 if (err < 0) {
1866 snd_card_free(card);
1867 return err;
1868 }
1869
1870 return cs4231_attach_finish(card);
1871 }
1872 #endif
1873
1874 #ifdef EBUS_SUPPORT
1875
snd_cs4231_ebus_play_callback(struct ebus_dma_info * p,int event,void * cookie)1876 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1877 void *cookie)
1878 {
1879 struct snd_cs4231 *chip = cookie;
1880
1881 snd_cs4231_play_callback(chip);
1882 }
1883
snd_cs4231_ebus_capture_callback(struct ebus_dma_info * p,int event,void * cookie)1884 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1885 int event, void *cookie)
1886 {
1887 struct snd_cs4231 *chip = cookie;
1888
1889 snd_cs4231_capture_callback(chip);
1890 }
1891
1892 /*
1893 * EBUS DMA wrappers
1894 */
1895
_ebus_dma_request(struct cs4231_dma_control * dma_cont,dma_addr_t bus_addr,size_t len)1896 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1897 dma_addr_t bus_addr, size_t len)
1898 {
1899 return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1900 }
1901
_ebus_dma_enable(struct cs4231_dma_control * dma_cont,int on)1902 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1903 {
1904 ebus_dma_enable(&dma_cont->ebus_info, on);
1905 }
1906
_ebus_dma_prepare(struct cs4231_dma_control * dma_cont,int dir)1907 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1908 {
1909 ebus_dma_prepare(&dma_cont->ebus_info, dir);
1910 }
1911
_ebus_dma_addr(struct cs4231_dma_control * dma_cont)1912 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1913 {
1914 return ebus_dma_addr(&dma_cont->ebus_info);
1915 }
1916
1917 /*
1918 * Init and exit routines
1919 */
1920
snd_cs4231_ebus_free(struct snd_cs4231 * chip)1921 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1922 {
1923 struct platform_device *op = chip->op;
1924
1925 if (chip->c_dma.ebus_info.regs) {
1926 ebus_dma_unregister(&chip->c_dma.ebus_info);
1927 of_iounmap(&op->resource[2], chip->c_dma.ebus_info.regs, 0x10);
1928 }
1929 if (chip->p_dma.ebus_info.regs) {
1930 ebus_dma_unregister(&chip->p_dma.ebus_info);
1931 of_iounmap(&op->resource[1], chip->p_dma.ebus_info.regs, 0x10);
1932 }
1933
1934 if (chip->port)
1935 of_iounmap(&op->resource[0], chip->port, 0x10);
1936
1937 return 0;
1938 }
1939
snd_cs4231_ebus_dev_free(struct snd_device * device)1940 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1941 {
1942 struct snd_cs4231 *cp = device->device_data;
1943
1944 return snd_cs4231_ebus_free(cp);
1945 }
1946
1947 static const struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1948 .dev_free = snd_cs4231_ebus_dev_free,
1949 };
1950
snd_cs4231_ebus_create(struct snd_card * card,struct platform_device * op,int dev)1951 static int snd_cs4231_ebus_create(struct snd_card *card,
1952 struct platform_device *op,
1953 int dev)
1954 {
1955 struct snd_cs4231 *chip = card->private_data;
1956 int err;
1957
1958 spin_lock_init(&chip->lock);
1959 spin_lock_init(&chip->c_dma.ebus_info.lock);
1960 spin_lock_init(&chip->p_dma.ebus_info.lock);
1961 mutex_init(&chip->mce_mutex);
1962 mutex_init(&chip->open_mutex);
1963 chip->flags |= CS4231_FLAG_EBUS;
1964 chip->op = op;
1965 memcpy(&chip->image, &snd_cs4231_original_image,
1966 sizeof(snd_cs4231_original_image));
1967 strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
1968 chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1969 chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
1970 chip->c_dma.ebus_info.client_cookie = chip;
1971 chip->c_dma.ebus_info.irq = op->archdata.irqs[0];
1972 strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
1973 chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1974 chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
1975 chip->p_dma.ebus_info.client_cookie = chip;
1976 chip->p_dma.ebus_info.irq = op->archdata.irqs[1];
1977
1978 chip->p_dma.prepare = _ebus_dma_prepare;
1979 chip->p_dma.enable = _ebus_dma_enable;
1980 chip->p_dma.request = _ebus_dma_request;
1981 chip->p_dma.address = _ebus_dma_addr;
1982
1983 chip->c_dma.prepare = _ebus_dma_prepare;
1984 chip->c_dma.enable = _ebus_dma_enable;
1985 chip->c_dma.request = _ebus_dma_request;
1986 chip->c_dma.address = _ebus_dma_addr;
1987
1988 chip->port = of_ioremap(&op->resource[0], 0, 0x10, "cs4231");
1989 chip->p_dma.ebus_info.regs =
1990 of_ioremap(&op->resource[1], 0, 0x10, "cs4231_pdma");
1991 chip->c_dma.ebus_info.regs =
1992 of_ioremap(&op->resource[2], 0, 0x10, "cs4231_cdma");
1993 if (!chip->port || !chip->p_dma.ebus_info.regs ||
1994 !chip->c_dma.ebus_info.regs) {
1995 snd_cs4231_ebus_free(chip);
1996 dev_dbg(chip->card->dev,
1997 "cs4231-%d: Unable to map chip registers.\n", dev);
1998 return -EIO;
1999 }
2000
2001 if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2002 snd_cs4231_ebus_free(chip);
2003 dev_dbg(chip->card->dev,
2004 "cs4231-%d: Unable to register EBUS capture DMA\n",
2005 dev);
2006 return -EBUSY;
2007 }
2008 if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2009 snd_cs4231_ebus_free(chip);
2010 dev_dbg(chip->card->dev,
2011 "cs4231-%d: Unable to enable EBUS capture IRQ\n",
2012 dev);
2013 return -EBUSY;
2014 }
2015
2016 if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2017 snd_cs4231_ebus_free(chip);
2018 dev_dbg(chip->card->dev,
2019 "cs4231-%d: Unable to register EBUS play DMA\n",
2020 dev);
2021 return -EBUSY;
2022 }
2023 if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2024 snd_cs4231_ebus_free(chip);
2025 dev_dbg(chip->card->dev,
2026 "cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2027 return -EBUSY;
2028 }
2029
2030 if (snd_cs4231_probe(chip) < 0) {
2031 snd_cs4231_ebus_free(chip);
2032 return -ENODEV;
2033 }
2034 snd_cs4231_init(chip);
2035
2036 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2037 chip, &snd_cs4231_ebus_dev_ops);
2038 if (err < 0) {
2039 snd_cs4231_ebus_free(chip);
2040 return err;
2041 }
2042
2043 return 0;
2044 }
2045
cs4231_ebus_probe(struct platform_device * op)2046 static int cs4231_ebus_probe(struct platform_device *op)
2047 {
2048 struct snd_card *card;
2049 int err;
2050
2051 err = cs4231_attach_begin(op, &card);
2052 if (err)
2053 return err;
2054
2055 sprintf(card->longname, "%s at 0x%llx, irq %d",
2056 card->shortname,
2057 op->resource[0].start,
2058 op->archdata.irqs[0]);
2059
2060 err = snd_cs4231_ebus_create(card, op, dev);
2061 if (err < 0) {
2062 snd_card_free(card);
2063 return err;
2064 }
2065
2066 return cs4231_attach_finish(card);
2067 }
2068 #endif
2069
cs4231_probe(struct platform_device * op)2070 static int cs4231_probe(struct platform_device *op)
2071 {
2072 #ifdef EBUS_SUPPORT
2073 if (of_node_name_eq(op->dev.of_node->parent, "ebus"))
2074 return cs4231_ebus_probe(op);
2075 #endif
2076 #ifdef SBUS_SUPPORT
2077 if (of_node_name_eq(op->dev.of_node->parent, "sbus") ||
2078 of_node_name_eq(op->dev.of_node->parent, "sbi"))
2079 return cs4231_sbus_probe(op);
2080 #endif
2081 return -ENODEV;
2082 }
2083
cs4231_remove(struct platform_device * op)2084 static void cs4231_remove(struct platform_device *op)
2085 {
2086 struct snd_cs4231 *chip = dev_get_drvdata(&op->dev);
2087
2088 snd_card_free(chip->card);
2089 }
2090
2091 static const struct of_device_id cs4231_match[] = {
2092 {
2093 .name = "SUNW,CS4231",
2094 },
2095 {
2096 .name = "audio",
2097 .compatible = "SUNW,CS4231",
2098 },
2099 {},
2100 };
2101
2102 MODULE_DEVICE_TABLE(of, cs4231_match);
2103
2104 static struct platform_driver cs4231_driver = {
2105 .driver = {
2106 .name = "audio",
2107 .of_match_table = cs4231_match,
2108 },
2109 .probe = cs4231_probe,
2110 .remove = cs4231_remove,
2111 };
2112
2113 module_platform_driver(cs4231_driver);
2114