1/*
   2 * Driver for CS4231 sound chips found on Sparcs.
   3 * Copyright (C) 2002, 2008 David S. Miller <davem@davemloft.net>
   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/delay.h>
  14#include <linux/init.h>
  15#include <linux/interrupt.h>
  16#include <linux/moduleparam.h>
  17#include <linux/irq.h>
  18#include <linux/io.h>
  19#include <linux/of.h>
  20#include <linux/of_device.h>
  21
  22#include <sound/core.h>
  23#include <sound/pcm.h>
  24#include <sound/info.h>
  25#include <sound/control.h>
  26#include <sound/timer.h>
  27#include <sound/initval.h>
  28#include <sound/pcm_params.h>
  29
  30#ifdef CONFIG_SBUS
  31#define SBUS_SUPPORT
  32#endif
  33
  34#if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
  35#define EBUS_SUPPORT
  36#include <linux/pci.h>
  37#include <asm/ebus_dma.h>
  38#endif
  39
  40static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
  41static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
  42/* Enable this card */
  43static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  44
  45module_param_array(index, int, NULL, 0444);
  46MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
  47module_param_array(id, charp, NULL, 0444);
  48MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
  49module_param_array(enable, bool, NULL, 0444);
  50MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
  51MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
  52MODULE_DESCRIPTION("Sun CS4231");
  53MODULE_LICENSE("GPL");
  54MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
  55
  56#ifdef SBUS_SUPPORT
  57struct sbus_dma_info {
  58       spinlock_t	lock;	/* DMA access lock */
  59       int		dir;
  60       void __iomem	*regs;
  61};
  62#endif
  63
  64struct snd_cs4231;
  65struct 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
  80struct 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
 186static 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
 203static unsigned int rates[14] = {
 204	5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
 205	27042, 32000, 33075, 37800, 44100, 48000
 206};
 207
 208static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
 209	.count	= ARRAY_SIZE(rates),
 210	.list	= rates,
 211};
 212
 213static 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
 220static 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
 256static 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
 264static 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
 277static 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
 289static 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		snd_printdd("out: auto calibration time out - reg = 0x%x, "
 296			    "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
 305static 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
 315static 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
 323static 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		snd_printdd("in: auto calibration time out - reg = 0x%x\n",
 329			    reg);
 330#endif
 331	__cs4231_writeb(chip, chip->mce_bit | reg, CS4231U(chip, REGSEL));
 332	mb();
 333	return __cs4231_readb(chip, CS4231U(chip, REG));
 334}
 335
 336/*
 337 *  CS4231 detection / MCE routines
 338 */
 339
 340static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
 341{
 342	int timeout;
 343
 344	/* looks like this sequence is proper for CS4231A chip (GUS MAX) */
 345	for (timeout = 5; timeout > 0; timeout--)
 346		__cs4231_readb(chip, CS4231U(chip, REGSEL));
 347
 348	/* end of cleanup sequence */
 349	for (timeout = 500; timeout > 0; timeout--) {
 350		int val = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 351		if ((val & CS4231_INIT) == 0)
 352			break;
 353		msleep(1);
 354	}
 355}
 356
 357static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
 358{
 359	unsigned long flags;
 360	int timeout;
 361
 362	spin_lock_irqsave(&chip->lock, flags);
 363	snd_cs4231_ready(chip);
 364#ifdef CONFIG_SND_DEBUG
 365	if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 366		snd_printdd("mce_up - auto calibration time out (0)\n");
 367#endif
 368	chip->mce_bit |= CS4231_MCE;
 369	timeout = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 370	if (timeout == 0x80)
 371		snd_printdd("mce_up [%p]: serious init problem - "
 372			    "codec still busy\n",
 373			    chip->port);
 374	if (!(timeout & CS4231_MCE))
 375		__cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f),
 376				CS4231U(chip, REGSEL));
 377	spin_unlock_irqrestore(&chip->lock, flags);
 378}
 379
 380static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
 381{
 382	unsigned long flags, timeout;
 383	int reg;
 384
 385	snd_cs4231_busy_wait(chip);
 386	spin_lock_irqsave(&chip->lock, flags);
 387#ifdef CONFIG_SND_DEBUG
 388	if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
 389		snd_printdd("mce_down [%p] - auto calibration time out (0)\n",
 390			    CS4231U(chip, REGSEL));
 391#endif
 392	chip->mce_bit &= ~CS4231_MCE;
 393	reg = __cs4231_readb(chip, CS4231U(chip, REGSEL));
 394	__cs4231_writeb(chip, chip->mce_bit | (reg & 0x1f),
 395			CS4231U(chip, REGSEL));
 396	if (reg == 0x80)
 397		snd_printdd("mce_down [%p]: serious init problem "
 398			    "- codec still busy\n", chip->port);
 399	if ((reg & CS4231_MCE) == 0) {
 400		spin_unlock_irqrestore(&chip->lock, flags);
 401		return;
 402	}
 403
 404	/*
 405	 * Wait for auto-calibration (AC) process to finish, i.e. ACI to go low.
 406	 */
 407	timeout = jiffies + msecs_to_jiffies(250);
 408	do {
 409		spin_unlock_irqrestore(&chip->lock, flags);
 410		msleep(1);
 411		spin_lock_irqsave(&chip->lock, flags);
 412		reg = snd_cs4231_in(chip, CS4231_TEST_INIT);
 413		reg &= CS4231_CALIB_IN_PROGRESS;
 414	} while (reg && time_before(jiffies, timeout));
 415	spin_unlock_irqrestore(&chip->lock, flags);
 416
 417	if (reg)
 418		snd_printk(KERN_ERR
 419			   "mce_down - auto calibration time out (2)\n");
 420}
 421
 422static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
 423				   struct snd_pcm_substream *substream,
 424				   unsigned int *periods_sent)
 425{
 426	struct snd_pcm_runtime *runtime = substream->runtime;
 427
 428	while (1) {
 429		unsigned int period_size = snd_pcm_lib_period_bytes(substream);
 430		unsigned int offset = period_size * (*periods_sent);
 431
 432		BUG_ON(period_size >= (1 << 24));
 433
 434		if (dma_cont->request(dma_cont,
 435				      runtime->dma_addr + offset, period_size))
 436			return;
 437		(*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
 438	}
 439}
 440
 441static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
 442			       unsigned int what, int on)
 443{
 444	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 445	struct cs4231_dma_control *dma_cont;
 446
 447	if (what & CS4231_PLAYBACK_ENABLE) {
 448		dma_cont = &chip->p_dma;
 449		if (on) {
 450			dma_cont->prepare(dma_cont, 0);
 451			dma_cont->enable(dma_cont, 1);
 452			snd_cs4231_advance_dma(dma_cont,
 453				chip->playback_substream,
 454				&chip->p_periods_sent);
 455		} else {
 456			dma_cont->enable(dma_cont, 0);
 457		}
 458	}
 459	if (what & CS4231_RECORD_ENABLE) {
 460		dma_cont = &chip->c_dma;
 461		if (on) {
 462			dma_cont->prepare(dma_cont, 1);
 463			dma_cont->enable(dma_cont, 1);
 464			snd_cs4231_advance_dma(dma_cont,
 465				chip->capture_substream,
 466				&chip->c_periods_sent);
 467		} else {
 468			dma_cont->enable(dma_cont, 0);
 469		}
 470	}
 471}
 472
 473static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
 474{
 475	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 476	int result = 0;
 477
 478	switch (cmd) {
 479	case SNDRV_PCM_TRIGGER_START:
 480	case SNDRV_PCM_TRIGGER_STOP:
 481	{
 482		unsigned int what = 0;
 483		struct snd_pcm_substream *s;
 484		unsigned long flags;
 485
 486		snd_pcm_group_for_each_entry(s, substream) {
 487			if (s == chip->playback_substream) {
 488				what |= CS4231_PLAYBACK_ENABLE;
 489				snd_pcm_trigger_done(s, substream);
 490			} else if (s == chip->capture_substream) {
 491				what |= CS4231_RECORD_ENABLE;
 492				snd_pcm_trigger_done(s, substream);
 493			}
 494		}
 495
 496		spin_lock_irqsave(&chip->lock, flags);
 497		if (cmd == SNDRV_PCM_TRIGGER_START) {
 498			cs4231_dma_trigger(substream, what, 1);
 499			chip->image[CS4231_IFACE_CTRL] |= what;
 500		} else {
 501			cs4231_dma_trigger(substream, what, 0);
 502			chip->image[CS4231_IFACE_CTRL] &= ~what;
 503		}
 504		snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 505			       chip->image[CS4231_IFACE_CTRL]);
 506		spin_unlock_irqrestore(&chip->lock, flags);
 507		break;
 508	}
 509	default:
 510		result = -EINVAL;
 511		break;
 512	}
 513
 514	return result;
 515}
 516
 517/*
 518 *  CODEC I/O
 519 */
 520
 521static unsigned char snd_cs4231_get_rate(unsigned int rate)
 522{
 523	int i;
 524
 525	for (i = 0; i < 14; i++)
 526		if (rate == rates[i])
 527			return freq_bits[i];
 528
 529	return freq_bits[13];
 530}
 531
 532static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format,
 533					   int channels)
 534{
 535	unsigned char rformat;
 536
 537	rformat = CS4231_LINEAR_8;
 538	switch (format) {
 539	case SNDRV_PCM_FORMAT_MU_LAW:
 540		rformat = CS4231_ULAW_8;
 541		break;
 542	case SNDRV_PCM_FORMAT_A_LAW:
 543		rformat = CS4231_ALAW_8;
 544		break;
 545	case SNDRV_PCM_FORMAT_S16_LE:
 546		rformat = CS4231_LINEAR_16;
 547		break;
 548	case SNDRV_PCM_FORMAT_S16_BE:
 549		rformat = CS4231_LINEAR_16_BIG;
 550		break;
 551	case SNDRV_PCM_FORMAT_IMA_ADPCM:
 552		rformat = CS4231_ADPCM_16;
 553		break;
 554	}
 555	if (channels > 1)
 556		rformat |= CS4231_STEREO;
 557	return rformat;
 558}
 559
 560static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
 561{
 562	unsigned long flags;
 563
 564	mute = mute ? 1 : 0;
 565	spin_lock_irqsave(&chip->lock, flags);
 566	if (chip->calibrate_mute == mute) {
 567		spin_unlock_irqrestore(&chip->lock, flags);
 568		return;
 569	}
 570	if (!mute) {
 571		snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
 572				chip->image[CS4231_LEFT_INPUT]);
 573		snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
 574				chip->image[CS4231_RIGHT_INPUT]);
 575		snd_cs4231_dout(chip, CS4231_LOOPBACK,
 576				chip->image[CS4231_LOOPBACK]);
 577	}
 578	snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
 579			mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
 580	snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
 581			mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
 582	snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
 583			mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
 584	snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
 585			mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
 586	snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
 587			mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
 588	snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
 589			mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
 590	snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
 591			mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
 592	snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
 593			mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
 594	snd_cs4231_dout(chip, CS4231_MONO_CTRL,
 595			mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
 596	chip->calibrate_mute = mute;
 597	spin_unlock_irqrestore(&chip->lock, flags);
 598}
 599
 600static void snd_cs4231_playback_format(struct snd_cs4231 *chip,
 601				       struct snd_pcm_hw_params *params,
 602				       unsigned char pdfr)
 603{
 604	unsigned long flags;
 605
 606	mutex_lock(&chip->mce_mutex);
 607	snd_cs4231_calibrate_mute(chip, 1);
 608
 609	snd_cs4231_mce_up(chip);
 610
 611	spin_lock_irqsave(&chip->lock, flags);
 612	snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 613		       (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
 614		       (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
 615		       pdfr);
 616	spin_unlock_irqrestore(&chip->lock, flags);
 617
 618	snd_cs4231_mce_down(chip);
 619
 620	snd_cs4231_calibrate_mute(chip, 0);
 621	mutex_unlock(&chip->mce_mutex);
 622}
 623
 624static void snd_cs4231_capture_format(struct snd_cs4231 *chip,
 625				      struct snd_pcm_hw_params *params,
 626				      unsigned char cdfr)
 627{
 628	unsigned long flags;
 629
 630	mutex_lock(&chip->mce_mutex);
 631	snd_cs4231_calibrate_mute(chip, 1);
 632
 633	snd_cs4231_mce_up(chip);
 634
 635	spin_lock_irqsave(&chip->lock, flags);
 636	if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
 637		snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 638			       ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
 639			       (cdfr & 0x0f));
 640		spin_unlock_irqrestore(&chip->lock, flags);
 641		snd_cs4231_mce_down(chip);
 642		snd_cs4231_mce_up(chip);
 643		spin_lock_irqsave(&chip->lock, flags);
 644	}
 645	snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
 646	spin_unlock_irqrestore(&chip->lock, flags);
 647
 648	snd_cs4231_mce_down(chip);
 649
 650	snd_cs4231_calibrate_mute(chip, 0);
 651	mutex_unlock(&chip->mce_mutex);
 652}
 653
 654/*
 655 *  Timer interface
 656 */
 657
 658static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
 659{
 660	struct snd_cs4231 *chip = snd_timer_chip(timer);
 661
 662	return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
 663}
 664
 665static int snd_cs4231_timer_start(struct snd_timer *timer)
 666{
 667	unsigned long flags;
 668	unsigned int ticks;
 669	struct snd_cs4231 *chip = snd_timer_chip(timer);
 670
 671	spin_lock_irqsave(&chip->lock, flags);
 672	ticks = timer->sticks;
 673	if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
 674	    (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
 675	    (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
 676		snd_cs4231_out(chip, CS4231_TIMER_HIGH,
 677			       chip->image[CS4231_TIMER_HIGH] =
 678			       (unsigned char) (ticks >> 8));
 679		snd_cs4231_out(chip, CS4231_TIMER_LOW,
 680			       chip->image[CS4231_TIMER_LOW] =
 681			       (unsigned char) ticks);
 682		snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 683			       chip->image[CS4231_ALT_FEATURE_1] |
 684					CS4231_TIMER_ENABLE);
 685	}
 686	spin_unlock_irqrestore(&chip->lock, flags);
 687
 688	return 0;
 689}
 690
 691static int snd_cs4231_timer_stop(struct snd_timer *timer)
 692{
 693	unsigned long flags;
 694	struct snd_cs4231 *chip = snd_timer_chip(timer);
 695
 696	spin_lock_irqsave(&chip->lock, flags);
 697	chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE;
 698	snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 699		       chip->image[CS4231_ALT_FEATURE_1]);
 700	spin_unlock_irqrestore(&chip->lock, flags);
 701
 702	return 0;
 703}
 704
 705static void __devinit snd_cs4231_init(struct snd_cs4231 *chip)
 706{
 707	unsigned long flags;
 708
 709	snd_cs4231_mce_down(chip);
 710
 711#ifdef SNDRV_DEBUG_MCE
 712	snd_printdd("init: (1)\n");
 713#endif
 714	snd_cs4231_mce_up(chip);
 715	spin_lock_irqsave(&chip->lock, flags);
 716	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 717					    CS4231_PLAYBACK_PIO |
 718					    CS4231_RECORD_ENABLE |
 719					    CS4231_RECORD_PIO |
 720					    CS4231_CALIB_MODE);
 721	chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
 722	snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
 723	spin_unlock_irqrestore(&chip->lock, flags);
 724	snd_cs4231_mce_down(chip);
 725
 726#ifdef SNDRV_DEBUG_MCE
 727	snd_printdd("init: (2)\n");
 728#endif
 729
 730	snd_cs4231_mce_up(chip);
 731	spin_lock_irqsave(&chip->lock, flags);
 732	snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
 733			chip->image[CS4231_ALT_FEATURE_1]);
 734	spin_unlock_irqrestore(&chip->lock, flags);
 735	snd_cs4231_mce_down(chip);
 736
 737#ifdef SNDRV_DEBUG_MCE
 738	snd_printdd("init: (3) - afei = 0x%x\n",
 739		    chip->image[CS4231_ALT_FEATURE_1]);
 740#endif
 741
 742	spin_lock_irqsave(&chip->lock, flags);
 743	snd_cs4231_out(chip, CS4231_ALT_FEATURE_2,
 744			chip->image[CS4231_ALT_FEATURE_2]);
 745	spin_unlock_irqrestore(&chip->lock, flags);
 746
 747	snd_cs4231_mce_up(chip);
 748	spin_lock_irqsave(&chip->lock, flags);
 749	snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
 750			chip->image[CS4231_PLAYBK_FORMAT]);
 751	spin_unlock_irqrestore(&chip->lock, flags);
 752	snd_cs4231_mce_down(chip);
 753
 754#ifdef SNDRV_DEBUG_MCE
 755	snd_printdd("init: (4)\n");
 756#endif
 757
 758	snd_cs4231_mce_up(chip);
 759	spin_lock_irqsave(&chip->lock, flags);
 760	snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
 761	spin_unlock_irqrestore(&chip->lock, flags);
 762	snd_cs4231_mce_down(chip);
 763
 764#ifdef SNDRV_DEBUG_MCE
 765	snd_printdd("init: (5)\n");
 766#endif
 767}
 768
 769static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
 770{
 771	unsigned long flags;
 772
 773	mutex_lock(&chip->open_mutex);
 774	if ((chip->mode & mode)) {
 775		mutex_unlock(&chip->open_mutex);
 776		return -EAGAIN;
 777	}
 778	if (chip->mode & CS4231_MODE_OPEN) {
 779		chip->mode |= mode;
 780		mutex_unlock(&chip->open_mutex);
 781		return 0;
 782	}
 783	/* ok. now enable and ack CODEC IRQ */
 784	spin_lock_irqsave(&chip->lock, flags);
 785	snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 786		       CS4231_RECORD_IRQ |
 787		       CS4231_TIMER_IRQ);
 788	snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 789	__cs4231_writeb(chip, 0, CS4231U(chip, STATUS));	/* clear IRQ */
 790	__cs4231_writeb(chip, 0, CS4231U(chip, STATUS));	/* clear IRQ */
 791
 792	snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
 793		       CS4231_RECORD_IRQ |
 794		       CS4231_TIMER_IRQ);
 795	snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 796
 797	spin_unlock_irqrestore(&chip->lock, flags);
 798
 799	chip->mode = mode;
 800	mutex_unlock(&chip->open_mutex);
 801	return 0;
 802}
 803
 804static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
 805{
 806	unsigned long flags;
 807
 808	mutex_lock(&chip->open_mutex);
 809	chip->mode &= ~mode;
 810	if (chip->mode & CS4231_MODE_OPEN) {
 811		mutex_unlock(&chip->open_mutex);
 812		return;
 813	}
 814	snd_cs4231_calibrate_mute(chip, 1);
 815
 816	/* disable IRQ */
 817	spin_lock_irqsave(&chip->lock, flags);
 818	snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 819	__cs4231_writeb(chip, 0, CS4231U(chip, STATUS));	/* clear IRQ */
 820	__cs4231_writeb(chip, 0, CS4231U(chip, STATUS));	/* clear IRQ */
 821
 822	/* now disable record & playback */
 823
 824	if (chip->image[CS4231_IFACE_CTRL] &
 825	    (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 826	     CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
 827		spin_unlock_irqrestore(&chip->lock, flags);
 828		snd_cs4231_mce_up(chip);
 829		spin_lock_irqsave(&chip->lock, flags);
 830		chip->image[CS4231_IFACE_CTRL] &=
 831			~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
 832			  CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
 833		snd_cs4231_out(chip, CS4231_IFACE_CTRL,
 834				chip->image[CS4231_IFACE_CTRL]);
 835		spin_unlock_irqrestore(&chip->lock, flags);
 836		snd_cs4231_mce_down(chip);
 837		spin_lock_irqsave(&chip->lock, flags);
 838	}
 839
 840	/* clear IRQ again */
 841	snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
 842	__cs4231_writeb(chip, 0, CS4231U(chip, STATUS));	/* clear IRQ */
 843	__cs4231_writeb(chip, 0, CS4231U(chip, STATUS));	/* clear IRQ */
 844	spin_unlock_irqrestore(&chip->lock, flags);
 845
 846	snd_cs4231_calibrate_mute(chip, 0);
 847
 848	chip->mode = 0;
 849	mutex_unlock(&chip->open_mutex);
 850}
 851
 852/*
 853 *  timer open/close
 854 */
 855
 856static int snd_cs4231_timer_open(struct snd_timer *timer)
 857{
 858	struct snd_cs4231 *chip = snd_timer_chip(timer);
 859	snd_cs4231_open(chip, CS4231_MODE_TIMER);
 860	return 0;
 861}
 862
 863static int snd_cs4231_timer_close(struct snd_timer *timer)
 864{
 865	struct snd_cs4231 *chip = snd_timer_chip(timer);
 866	snd_cs4231_close(chip, CS4231_MODE_TIMER);
 867	return 0;
 868}
 869
 870static struct snd_timer_hardware snd_cs4231_timer_table = {
 871	.flags		=	SNDRV_TIMER_HW_AUTO,
 872	.resolution	=	9945,
 873	.ticks		=	65535,
 874	.open		=	snd_cs4231_timer_open,
 875	.close		=	snd_cs4231_timer_close,
 876	.c_resolution	=	snd_cs4231_timer_resolution,
 877	.start		=	snd_cs4231_timer_start,
 878	.stop		=	snd_cs4231_timer_stop,
 879};
 880
 881/*
 882 *  ok.. exported functions..
 883 */
 884
 885static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
 886					 struct snd_pcm_hw_params *hw_params)
 887{
 888	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 889	unsigned char new_pdfr;
 890	int err;
 891
 892	err = snd_pcm_lib_malloc_pages(substream,
 893					params_buffer_bytes(hw_params));
 894	if (err < 0)
 895		return err;
 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
 904static 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
 910	spin_lock_irqsave(&chip->lock, flags);
 911
 912	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
 913					    CS4231_PLAYBACK_PIO);
 914
 915	BUG_ON(runtime->period_size > 0xffff + 1);
 916
 917	chip->p_periods_sent = 0;
 918	spin_unlock_irqrestore(&chip->lock, flags);
 919
 920	return 0;
 921}
 922
 923static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
 924					struct snd_pcm_hw_params *hw_params)
 925{
 926	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 927	unsigned char new_cdfr;
 928	int err;
 929
 930	err = snd_pcm_lib_malloc_pages(substream,
 931					params_buffer_bytes(hw_params));
 932	if (err < 0)
 933		return err;
 934	new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
 935					 params_channels(hw_params)) |
 936		snd_cs4231_get_rate(params_rate(hw_params));
 937	snd_cs4231_capture_format(chip, hw_params, new_cdfr);
 938
 939	return 0;
 940}
 941
 942static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
 943{
 944	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 945	unsigned long flags;
 946
 947	spin_lock_irqsave(&chip->lock, flags);
 948	chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
 949					    CS4231_RECORD_PIO);
 950
 951
 952	chip->c_periods_sent = 0;
 953	spin_unlock_irqrestore(&chip->lock, flags);
 954
 955	return 0;
 956}
 957
 958static void snd_cs4231_overrange(struct snd_cs4231 *chip)
 959{
 960	unsigned long flags;
 961	unsigned char res;
 962
 963	spin_lock_irqsave(&chip->lock, flags);
 964	res = snd_cs4231_in(chip, CS4231_TEST_INIT);
 965	spin_unlock_irqrestore(&chip->lock, flags);
 966
 967	/* detect overrange only above 0dB; may be user selectable? */
 968	if (res & (0x08 | 0x02))
 969		chip->capture_substream->runtime->overrange++;
 970}
 971
 972static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
 973{
 974	if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
 975		snd_pcm_period_elapsed(chip->playback_substream);
 976		snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
 977					    &chip->p_periods_sent);
 978	}
 979}
 980
 981static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
 982{
 983	if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
 984		snd_pcm_period_elapsed(chip->capture_substream);
 985		snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
 986					    &chip->c_periods_sent);
 987	}
 988}
 989
 990static snd_pcm_uframes_t snd_cs4231_playback_pointer(
 991					struct snd_pcm_substream *substream)
 992{
 993	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
 994	struct cs4231_dma_control *dma_cont = &chip->p_dma;
 995	size_t ptr;
 996
 997	if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
 998		return 0;
 999	ptr = dma_cont->address(dma_cont);
1000	if (ptr != 0)
1001		ptr -= substream->runtime->dma_addr;
1002
1003	return bytes_to_frames(substream->runtime, ptr);
1004}
1005
1006static snd_pcm_uframes_t snd_cs4231_capture_pointer(
1007					struct snd_pcm_substream *substream)
1008{
1009	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1010	struct cs4231_dma_control *dma_cont = &chip->c_dma;
1011	size_t ptr;
1012
1013	if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1014		return 0;
1015	ptr = dma_cont->address(dma_cont);
1016	if (ptr != 0)
1017		ptr -= substream->runtime->dma_addr;
1018
1019	return bytes_to_frames(substream->runtime, ptr);
1020}
1021
1022static int __devinit snd_cs4231_probe(struct snd_cs4231 *chip)
1023{
1024	unsigned long flags;
1025	int i;
1026	int id = 0;
1027	int vers = 0;
1028	unsigned char *ptr;
1029
1030	for (i = 0; i < 50; i++) {
1031		mb();
1032		if (__cs4231_readb(chip, CS4231U(chip, REGSEL)) & CS4231_INIT)
1033			msleep(2);
1034		else {
1035			spin_lock_irqsave(&chip->lock, flags);
1036			snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1037			id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1038			vers = snd_cs4231_in(chip, CS4231_VERSION);
1039			spin_unlock_irqrestore(&chip->lock, flags);
1040			if (id == 0x0a)
1041				break;	/* this is valid value */
1042		}
1043	}
1044	snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1045	if (id != 0x0a)
1046		return -ENODEV;	/* no valid device found */
1047
1048	spin_lock_irqsave(&chip->lock, flags);
1049
1050	/* clear any pendings IRQ */
1051	__cs4231_readb(chip, CS4231U(chip, STATUS));
1052	__cs4231_writeb(chip, 0, CS4231U(chip, STATUS));
1053	mb();
1054
1055	spin_unlock_irqrestore(&chip->lock, flags);
1056
1057	chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1058	chip->image[CS4231_IFACE_CTRL] =
1059		chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1060	chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1061	chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1062	if (vers & 0x20)
1063		chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1064
1065	ptr = (unsigned char *) &chip->image;
1066
1067	snd_cs4231_mce_down(chip);
1068
1069	spin_lock_irqsave(&chip->lock, flags);
1070
1071	for (i = 0; i < 32; i++)	/* ok.. fill all CS4231 registers */
1072		snd_cs4231_out(chip, i, *ptr++);
1073
1074	spin_unlock_irqrestore(&chip->lock, flags);
1075
1076	snd_cs4231_mce_up(chip);
1077
1078	snd_cs4231_mce_down(chip);
1079
1080	mdelay(2);
1081
1082	return 0;		/* all things are ok.. */
1083}
1084
1085static struct snd_pcm_hardware snd_cs4231_playback = {
1086	.info			= SNDRV_PCM_INFO_MMAP |
1087				  SNDRV_PCM_INFO_INTERLEAVED |
1088				  SNDRV_PCM_INFO_MMAP_VALID |
1089				  SNDRV_PCM_INFO_SYNC_START,
1090	.formats		= SNDRV_PCM_FMTBIT_MU_LAW |
1091				  SNDRV_PCM_FMTBIT_A_LAW |
1092				  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1093				  SNDRV_PCM_FMTBIT_U8 |
1094				  SNDRV_PCM_FMTBIT_S16_LE |
1095				  SNDRV_PCM_FMTBIT_S16_BE,
1096	.rates			= SNDRV_PCM_RATE_KNOT |
1097				  SNDRV_PCM_RATE_8000_48000,
1098	.rate_min		= 5510,
1099	.rate_max		= 48000,
1100	.channels_min		= 1,
1101	.channels_max		= 2,
1102	.buffer_bytes_max	= 32 * 1024,
1103	.period_bytes_min	= 64,
1104	.period_bytes_max	= 32 * 1024,
1105	.periods_min		= 1,
1106	.periods_max		= 1024,
1107};
1108
1109static struct snd_pcm_hardware snd_cs4231_capture = {
1110	.info			= SNDRV_PCM_INFO_MMAP |
1111				  SNDRV_PCM_INFO_INTERLEAVED |
1112				  SNDRV_PCM_INFO_MMAP_VALID |
1113				  SNDRV_PCM_INFO_SYNC_START,
1114	.formats		= SNDRV_PCM_FMTBIT_MU_LAW |
1115				  SNDRV_PCM_FMTBIT_A_LAW |
1116				  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1117				  SNDRV_PCM_FMTBIT_U8 |
1118				  SNDRV_PCM_FMTBIT_S16_LE |
1119				  SNDRV_PCM_FMTBIT_S16_BE,
1120	.rates			= SNDRV_PCM_RATE_KNOT |
1121				  SNDRV_PCM_RATE_8000_48000,
1122	.rate_min		= 5510,
1123	.rate_max		= 48000,
1124	.channels_min		= 1,
1125	.channels_max		= 2,
1126	.buffer_bytes_max	= 32 * 1024,
1127	.period_bytes_min	= 64,
1128	.period_bytes_max	= 32 * 1024,
1129	.periods_min		= 1,
1130	.periods_max		= 1024,
1131};
1132
1133static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1134{
1135	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1136	struct snd_pcm_runtime *runtime = substream->runtime;
1137	int err;
1138
1139	runtime->hw = snd_cs4231_playback;
1140
1141	err = snd_cs4231_open(chip, CS4231_MODE_PLAY);
1142	if (err < 0) {
1143		snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1144		return err;
1145	}
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
1154static 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		snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1165		return err;
1166	}
1167	chip->capture_substream = substream;
1168	chip->c_periods_sent = 0;
1169	snd_pcm_set_sync(substream);
1170	snd_cs4231_xrate(runtime);
1171
1172	return 0;
1173}
1174
1175static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1176{
1177	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1178
1179	snd_cs4231_close(chip, CS4231_MODE_PLAY);
1180	chip->playback_substream = NULL;
1181
1182	return 0;
1183}
1184
1185static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1186{
1187	struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1188
1189	snd_cs4231_close(chip, CS4231_MODE_RECORD);
1190	chip->capture_substream = NULL;
1191
1192	return 0;
1193}
1194
1195/* XXX We can do some power-management, in particular on EBUS using
1196 * XXX the audio AUXIO register...
1197 */
1198
1199static struct snd_pcm_ops snd_cs4231_playback_ops = {
1200	.open		=	snd_cs4231_playback_open,
1201	.close		=	snd_cs4231_playback_close,
1202	.ioctl		=	snd_pcm_lib_ioctl,
1203	.hw_params	=	snd_cs4231_playback_hw_params,
1204	.hw_free	=	snd_pcm_lib_free_pages,
1205	.prepare	=	snd_cs4231_playback_prepare,
1206	.trigger	=	snd_cs4231_trigger,
1207	.pointer	=	snd_cs4231_playback_pointer,
1208};
1209
1210static struct snd_pcm_ops snd_cs4231_capture_ops = {
1211	.open		=	snd_cs4231_capture_open,
1212	.close		=	snd_cs4231_capture_close,
1213	.ioctl		=	snd_pcm_lib_ioctl,
1214	.hw_params	=	snd_cs4231_capture_hw_params,
1215	.hw_free	=	snd_pcm_lib_free_pages,
1216	.prepare	=	snd_cs4231_capture_prepare,
1217	.trigger	=	snd_cs4231_trigger,
1218	.pointer	=	snd_cs4231_capture_pointer,
1219};
1220
1221static int __devinit snd_cs4231_pcm(struct snd_card *card)
1222{
1223	struct snd_cs4231 *chip = card->private_data;
1224	struct snd_pcm *pcm;
1225	int err;
1226
1227	err = snd_pcm_new(card, "CS4231", 0, 1, 1, &pcm);
1228	if (err < 0)
1229		return err;
1230
1231	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
1232			&snd_cs4231_playback_ops);
1233	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
1234			&snd_cs4231_capture_ops);
1235
1236	/* global setup */
1237	pcm->private_data = chip;
1238	pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1239	strcpy(pcm->name, "CS4231");
1240
1241	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
1242					      &chip->op->dev,
1243					      64 * 1024, 128 * 1024);
1244
1245	chip->pcm = pcm;
1246
1247	return 0;
1248}
1249
1250static int __devinit snd_cs4231_timer(struct snd_card *card)
1251{
1252	struct snd_cs4231 *chip = card->private_data;
1253	struct snd_timer *timer;
1254	struct snd_timer_id tid;
1255	int err;
1256
1257	/* Timer initialization */
1258	tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1259	tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1260	tid.card = card->number;
1261	tid.device = 0;
1262	tid.subdevice = 0;
1263	err = snd_timer_new(card, "CS4231", &tid, &timer);
1264	if (err < 0)
1265		return err;
1266	strcpy(timer->name, "CS4231");
1267	timer->private_data = chip;
1268	timer->hw = snd_cs4231_timer_table;
1269	chip->timer = timer;
1270
1271	return 0;
1272}
1273
1274/*
1275 *  MIXER part
1276 */
1277
1278static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1279			       struct snd_ctl_elem_info *uinfo)
1280{
1281	static char *texts[4] = {
1282		"Line", "CD", "Mic", "Mix"
1283	};
1284
1285	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1286	uinfo->count = 2;
1287	uinfo->value.enumerated.items = 4;
1288	if (uinfo->value.enumerated.item > 3)
1289		uinfo->value.enumerated.item = 3;
1290	strcpy(uinfo->value.enumerated.name,
1291		texts[uinfo->value.enumerated.item]);
1292
1293	return 0;
1294}
1295
1296static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1297			      struct snd_ctl_elem_value *ucontrol)
1298{
1299	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1300	unsigned long flags;
1301
1302	spin_lock_irqsave(&chip->lock, flags);
1303	ucontrol->value.enumerated.item[0] =
1304		(chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1305	ucontrol->value.enumerated.item[1] =
1306		(chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1307	spin_unlock_irqrestore(&chip->lock, flags);
1308
1309	return 0;
1310}
1311
1312static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1313			      struct snd_ctl_elem_value *ucontrol)
1314{
1315	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1316	unsigned long flags;
1317	unsigned short left, right;
1318	int change;
1319
1320	if (ucontrol->value.enumerated.item[0] > 3 ||
1321	    ucontrol->value.enumerated.item[1] > 3)
1322		return -EINVAL;
1323	left = ucontrol->value.enumerated.item[0] << 6;
1324	right = ucontrol->value.enumerated.item[1] << 6;
1325
1326	spin_lock_irqsave(&chip->lock, flags);
1327
1328	left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1329	right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1330	change = left != chip->image[CS4231_LEFT_INPUT] ||
1331		 right != chip->image[CS4231_RIGHT_INPUT];
1332	snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1333	snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1334
1335	spin_unlock_irqrestore(&chip->lock, flags);
1336
1337	return change;
1338}
1339
1340static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1341				  struct snd_ctl_elem_info *uinfo)
1342{
1343	int mask = (kcontrol->private_value >> 16) & 0xff;
1344
1345	uinfo->type = (mask == 1) ?
1346		SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1347	uinfo->count = 1;
1348	uinfo->value.integer.min = 0;
1349	uinfo->value.integer.max = mask;
1350
1351	return 0;
1352}
1353
1354static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1355				 struct snd_ctl_elem_value *ucontrol)
1356{
1357	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1358	unsigned long flags;
1359	int reg = kcontrol->private_value & 0xff;
1360	int shift = (kcontrol->private_value >> 8) & 0xff;
1361	int mask = (kcontrol->private_value >> 16) & 0xff;
1362	int invert = (kcontrol->private_value >> 24) & 0xff;
1363
1364	spin_lock_irqsave(&chip->lock, flags);
1365
1366	ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1367
1368	spin_unlock_irqrestore(&chip->lock, flags);
1369
1370	if (invert)
1371		ucontrol->value.integer.value[0] =
1372			(mask - ucontrol->value.integer.value[0]);
1373
1374	return 0;
1375}
1376
1377static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1378				 struct snd_ctl_elem_value *ucontrol)
1379{
1380	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1381	unsigned long flags;
1382	int reg = kcontrol->private_value & 0xff;
1383	int shift = (kcontrol->private_value >> 8) & 0xff;
1384	int mask = (kcontrol->private_value >> 16) & 0xff;
1385	int invert = (kcontrol->private_value >> 24) & 0xff;
1386	int change;
1387	unsigned short val;
1388
1389	val = (ucontrol->value.integer.value[0] & mask);
1390	if (invert)
1391		val = mask - val;
1392	val <<= shift;
1393
1394	spin_lock_irqsave(&chip->lock, flags);
1395
1396	val = (chip->image[reg] & ~(mask << shift)) | val;
1397	change = val != chip->image[reg];
1398	snd_cs4231_out(chip, reg, val);
1399
1400	spin_unlock_irqrestore(&chip->lock, flags);
1401
1402	return change;
1403}
1404
1405static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1406				  struct snd_ctl_elem_info *uinfo)
1407{
1408	int mask = (kcontrol->private_value >> 24) & 0xff;
1409
1410	uinfo->type = mask == 1 ?
1411		SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1412	uinfo->count = 2;
1413	uinfo->value.integer.min = 0;
1414	uinfo->value.integer.max = mask;
1415
1416	return 0;
1417}
1418
1419static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1420				 struct snd_ctl_elem_value *ucontrol)
1421{
1422	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1423	unsigned long flags;
1424	int left_reg = kcontrol->private_value & 0xff;
1425	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1426	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1427	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1428	int mask = (kcontrol->private_value >> 24) & 0xff;
1429	int invert = (kcontrol->private_value >> 22) & 1;
1430
1431	spin_lock_irqsave(&chip->lock, flags);
1432
1433	ucontrol->value.integer.value[0] =
1434		(chip->image[left_reg] >> shift_left) & mask;
1435	ucontrol->value.integer.value[1] =
1436		(chip->image[right_reg] >> shift_right) & mask;
1437
1438	spin_unlock_irqrestore(&chip->lock, flags);
1439
1440	if (invert) {
1441		ucontrol->value.integer.value[0] =
1442			(mask - ucontrol->value.integer.value[0]);
1443		ucontrol->value.integer.value[1] =
1444			(mask - ucontrol->value.integer.value[1]);
1445	}
1446
1447	return 0;
1448}
1449
1450static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1451				 struct snd_ctl_elem_value *ucontrol)
1452{
1453	struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1454	unsigned long flags;
1455	int left_reg = kcontrol->private_value & 0xff;
1456	int right_reg = (kcontrol->private_value >> 8) & 0xff;
1457	int shift_left = (kcontrol->private_value >> 16) & 0x07;
1458	int shift_right = (kcontrol->private_value >> 19) & 0x07;
1459	int mask = (kcontrol->private_value >> 24) & 0xff;
1460	int invert = (kcontrol->private_value >> 22) & 1;
1461	int change;
1462	unsigned short val1, val2;
1463
1464	val1 = ucontrol->value.integer.value[0] & mask;
1465	val2 = ucontrol->value.integer.value[1] & mask;
1466	if (invert) {
1467		val1 = mask - val1;
1468		val2 = mask - val2;
1469	}
1470	val1 <<= shift_left;
1471	val2 <<= shift_right;
1472
1473	spin_lock_irqsave(&chip->lock, flags);
1474
1475	val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1476	val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1477	change = val1 != chip->image[left_reg];
1478	change |= val2 != chip->image[right_reg];
1479	snd_cs4231_out(chip, left_reg, val1);
1480	snd_cs4231_out(chip, right_reg, val2);
1481
1482	spin_unlock_irqrestore(&chip->lock, flags);
1483
1484	return change;
1485}
1486
1487#define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1488{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1489  .info = snd_cs4231_info_single,	\
1490  .get = snd_cs4231_get_single, .put = snd_cs4231_put_single,	\
1491  .private_value = (reg) | ((shift) << 8) | ((mask) << 16) | ((invert) << 24) }
1492
1493#define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, \
1494			shift_right, mask, invert) \
1495{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), .index = (xindex), \
1496  .info = snd_cs4231_info_double,	\
1497  .get = snd_cs4231_get_double, .put = snd_cs4231_put_double,	\
1498  .private_value = (left_reg) | ((right_reg) << 8) | ((shift_left) << 16) | \
1499		   ((shift_right) << 19) | ((mask) << 24) | ((invert) << 22) }
1500
1501static struct snd_kcontrol_new snd_cs4231_controls[] __devinitdata = {
1502CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT,
1503		CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1504CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT,
1505		CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1506CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN,
1507		CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1508CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN,
1509		CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1510CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT,
1511		CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1512CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT,
1513		CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1514CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT,
1515		CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1516CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT,
1517		CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1518CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1519CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1520CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1521CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1522CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0,
1523		15, 0),
1524{
1525	.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
1526	.name	= "Capture Source",
1527	.info	= snd_cs4231_info_mux,
1528	.get	= snd_cs4231_get_mux,
1529	.put	= snd_cs4231_put_mux,
1530},
1531CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5,
1532		1, 0),
1533CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1534CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1535/* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1536CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1537CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1538};
1539
1540static int __devinit snd_cs4231_mixer(struct snd_card *card)
1541{
1542	struct snd_cs4231 *chip = card->private_data;
1543	int err, idx;
1544
1545	if (snd_BUG_ON(!chip || !chip->pcm))
1546		return -EINVAL;
1547
1548	strcpy(card->mixername, chip->pcm->name);
1549
1550	for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1551		err = snd_ctl_add(card,
1552				 snd_ctl_new1(&snd_cs4231_controls[idx], chip));
1553		if (err < 0)
1554			return err;
1555	}
1556	return 0;
1557}
1558
1559static int dev;
1560
1561static int __devinit cs4231_attach_begin(struct snd_card **rcard)
1562{
1563	struct snd_card *card;
1564	struct snd_cs4231 *chip;
1565	int err;
1566
1567	*rcard = NULL;
1568
1569	if (dev >= SNDRV_CARDS)
1570		return -ENODEV;
1571
1572	if (!enable[dev]) {
1573		dev++;
1574		return -ENOENT;
1575	}
1576
1577	err = snd_card_create(index[dev], id[dev], THIS_MODULE,
1578			      sizeof(struct snd_cs4231), &card);
1579	if (err < 0)
1580		return err;
1581
1582	strcpy(card->driver, "CS4231");
1583	strcpy(card->shortname, "Sun CS4231");
1584
1585	chip = card->private_data;
1586	chip->card = card;
1587
1588	*rcard = card;
1589	return 0;
1590}
1591
1592static int __devinit cs4231_attach_finish(struct snd_card *card)
1593{
1594	struct snd_cs4231 *chip = card->private_data;
1595	int err;
1596
1597	err = snd_cs4231_pcm(card);
1598	if (err < 0)
1599		goto out_err;
1600
1601	err = snd_cs4231_mixer(card);
1602	if (err < 0)
1603		goto out_err;
1604
1605	err = snd_cs4231_timer(card);
1606	if (err < 0)
1607		goto out_err;
1608
1609	err = snd_card_register(card);
1610	if (err < 0)
1611		goto out_err;
1612
1613	dev_set_drvdata(&chip->op->dev, chip);
1614
1615	dev++;
1616	return 0;
1617
1618out_err:
1619	snd_card_free(card);
1620	return err;
1621}
1622
1623#ifdef SBUS_SUPPORT
1624
1625static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1626{
1627	unsigned long flags;
1628	unsigned char status;
1629	u32 csr;
1630	struct snd_cs4231 *chip = dev_id;
1631
1632	/*This is IRQ is not raised by the cs4231*/
1633	if (!(__cs4231_readb(chip, CS4231U(chip, STATUS)) & CS4231_GLOBALIRQ))
1634		return IRQ_NONE;
1635
1636	/* ACK the APC interrupt. */
1637	csr = sbus_readl(chip->port + APCCSR);
1638
1639	sbus_writel(csr, chip->port + APCCSR);
1640
1641	if ((csr & APC_PDMA_READY) &&
1642	    (csr & APC_PLAY_INT) &&
1643	    (csr & APC_XINT_PNVA) &&
1644	    !(csr & APC_XINT_EMPT))
1645			snd_cs4231_play_callback(chip);
1646
1647	if ((csr & APC_CDMA_READY) &&
1648	    (csr & APC_CAPT_INT) &&
1649	    (csr & APC_XINT_CNVA) &&
1650	    !(csr & APC_XINT_EMPT))
1651			snd_cs4231_capture_callback(chip);
1652
1653	status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1654
1655	if (status & CS4231_TIMER_IRQ) {
1656		if (chip->timer)
1657			snd_timer_interrupt(chip->timer, chip->timer->sticks);
1658	}
1659
1660	if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1661		snd_cs4231_overrange(chip);
1662
1663	/* ACK the CS4231 interrupt. */
1664	spin_lock_irqsave(&chip->lock, flags);
1665	snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1666	spin_unlock_irqrestore(&chip->lock, flags);
1667
1668	return IRQ_HANDLED;
1669}
1670
1671/*
1672 * SBUS DMA routines
1673 */
1674
1675static int sbus_dma_request(struct cs4231_dma_control *dma_cont,
1676			    dma_addr_t bus_addr, size_t len)
1677{
1678	unsigned long flags;
1679	u32 test, csr;
1680	int err;
1681	struct sbus_dma_info *base = &dma_cont->sbus_info;
1682
1683	if (len >= (1 << 24))
1684		return -EINVAL;
1685	spin_lock_irqsave(&base->lock, flags);
1686	csr = sbus_readl(base->regs + APCCSR);
1687	err = -EINVAL;
1688	test = APC_CDMA_READY;
1689	if (base->dir == APC_PLAY)
1690		test = APC_PDMA_READY;
1691	if (!(csr & test))
1692		goto out;
1693	err = -EBUSY;
1694	test = APC_XINT_CNVA;
1695	if (base->dir == APC_PLAY)
1696		test = APC_XINT_PNVA;
1697	if (!(csr & test))
1698		goto out;
1699	err = 0;
1700	sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1701	sbus_writel(len, base->regs + base->dir + APCNC);
1702out:
1703	spin_unlock_irqrestore(&base->lock, flags);
1704	return err;
1705}
1706
1707static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1708{
1709	unsigned long flags;
1710	u32 csr, test;
1711	struct sbus_dma_info *base = &dma_cont->sbus_info;
1712
1713	spin_lock_irqsave(&base->lock, flags);
1714	csr = sbus_readl(base->regs + APCCSR);
1715	test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1716		APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1717		 APC_XINT_PENA;
1718	if (base->dir == APC_RECORD)
1719		test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1720			APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1721	csr |= test;
1722	sbus_writel(csr, base->regs + APCCSR);
1723	spin_unlock_irqrestore(&base->lock, flags);
1724}
1725
1726static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1727{
1728	unsigned long flags;
1729	u32 csr, shift;
1730	struct sbus_dma_info *base = &dma_cont->sbus_info;
1731
1732	spin_lock_irqsave(&base->lock, flags);
1733	if (!on) {
1734		sbus_writel(0, base->regs + base->dir + APCNC);
1735		sbus_writel(0, base->regs + base->dir + APCNVA);
1736		if (base->dir == APC_PLAY) {
1737			sbus_writel(0, base->regs + base->dir + APCC);
1738			sbus_writel(0, base->regs + base->dir + APCVA);
1739		}
1740
1741		udelay(1200);
1742	}
1743	csr = sbus_readl(base->regs + APCCSR);
1744	shift = 0;
1745	if (base->dir == APC_PLAY)
1746		shift = 1;
1747	if (on)
1748		csr &= ~(APC_CPAUSE << shift);
1749	else
1750		csr |= (APC_CPAUSE << shift);
1751	sbus_writel(csr, base->regs + APCCSR);
1752	if (on)
1753		csr |= (APC_CDMA_READY << shift);
1754	else
1755		csr &= ~(APC_CDMA_READY << shift);
1756	sbus_writel(csr, base->regs + APCCSR);
1757
1758	spin_unlock_irqrestore(&base->lock, flags);
1759}
1760
1761static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1762{
1763	struct sbus_dma_info *base = &dma_cont->sbus_info;
1764
1765	return sbus_readl(base->regs + base->dir + APCVA);
1766}
1767
1768/*
1769 * Init and exit routines
1770 */
1771
1772static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1773{
1774	struct platform_device *op = chip->op;
1775
1776	if (chip->irq[0])
1777		free_irq(chip->irq[0], chip);
1778
1779	if (chip->port)
1780		of_iounmap(&op->resource[0], chip->port, chip->regs_size);
1781
1782	return 0;
1783}
1784
1785static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1786{
1787	struct snd_cs4231 *cp = device->device_data;
1788
1789	return snd_cs4231_sbus_free(cp);
1790}
1791
1792static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1793	.dev_free	=	snd_cs4231_sbus_dev_free,
1794};
1795
1796static int __devinit snd_cs4231_sbus_create(struct snd_card *card,
1797					    struct platform_device *op,
1798					    int dev)
1799{
1800	struct snd_cs4231 *chip = card->private_data;
1801	int err;
1802
1803	spin_lock_init(&chip->lock);
1804	spin_lock_init(&chip->c_dma.sbus_info.lock);
1805	spin_lock_init(&chip->p_dma.sbus_info.lock);
1806	mutex_init(&chip->mce_mutex);
1807	mutex_init(&chip->open_mutex);
1808	chip->op = op;
1809	chip->regs_size = resource_size(&op->resource[0]);
1810	memcpy(&chip->image, &snd_cs4231_original_image,
1811	       sizeof(snd_cs4231_original_image));
1812
1813	chip->port = of_ioremap(&op->resource[0], 0,
1814				chip->regs_size, "cs4231");
1815	if (!chip->port) {
1816		snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1817		return -EIO;
1818	}
1819
1820	chip->c_dma.sbus_info.regs = chip->port;
1821	chip->p_dma.sbus_info.regs = chip->port;
1822	chip->c_dma.sbus_info.dir = APC_RECORD;
1823	chip->p_dma.sbus_info.dir = APC_PLAY;
1824
1825	chip->p_dma.prepare = sbus_dma_prepare;
1826	chip->p_dma.enable = sbus_dma_enable;
1827	chip->p_dma.request = sbus_dma_request;
1828	chip->p_dma.address = sbus_dma_addr;
1829
1830	chip->c_dma.prepare = sbus_dma_prepare;
1831	chip->c_dma.enable = sbus_dma_enable;
1832	chip->c_dma.request = sbus_dma_request;
1833	chip->c_dma.address = sbus_dma_addr;
1834
1835	if (request_irq(op->archdata.irqs[0], snd_cs4231_sbus_interrupt,
1836			IRQF_SHARED, "cs4231", chip)) {
1837		snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
1838			    dev, op->archdata.irqs[0]);
1839		snd_cs4231_sbus_free(chip);
1840		return -EBUSY;
1841	}
1842	chip->irq[0] = op->archdata.irqs[0];
1843
1844	if (snd_cs4231_probe(chip) < 0) {
1845		snd_cs4231_sbus_free(chip);
1846		return -ENODEV;
1847	}
1848	snd_cs4231_init(chip);
1849
1850	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
1851				  chip, &snd_cs4231_sbus_dev_ops)) < 0) {
1852		snd_cs4231_sbus_free(chip);
1853		return err;
1854	}
1855
1856	return 0;
1857}
1858
1859static int __devinit cs4231_sbus_probe(struct platform_device *op)
1860{
1861	struct resource *rp = &op->resource[0];
1862	struct snd_card *card;
1863	int err;
1864
1865	err = cs4231_attach_begin(&card);
1866	if (err)
1867		return err;
1868
1869	sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
1870		card->shortname,
1871		rp->flags & 0xffL,
1872		(unsigned long long)rp->start,
1873		op->archdata.irqs[0]);
1874
1875	err = snd_cs4231_sbus_create(card, op, dev);
1876	if (err < 0) {
1877		snd_card_free(card);
1878		return err;
1879	}
1880
1881	return cs4231_attach_finish(card);
1882}
1883#endif
1884
1885#ifdef EBUS_SUPPORT
1886
1887static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event,
1888					  void *cookie)
1889{
1890	struct snd_cs4231 *chip = cookie;
1891
1892	snd_cs4231_play_callback(chip);
1893}
1894
1895static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p,
1896					     int event, void *cookie)
1897{
1898	struct snd_cs4231 *chip = cookie;
1899
1900	snd_cs4231_capture_callback(chip);
1901}
1902
1903/*
1904 * EBUS DMA wrappers
1905 */
1906
1907static int _ebus_dma_request(struct cs4231_dma_control *dma_cont,
1908			     dma_addr_t bus_addr, size_t len)
1909{
1910	return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
1911}
1912
1913static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1914{
1915	ebus_dma_enable(&dma_cont->ebus_info, on);
1916}
1917
1918static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
1919{
1920	ebus_dma_prepare(&dma_cont->ebus_info, dir);
1921}
1922
1923static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
1924{
1925	return ebus_dma_addr(&dma_cont->ebus_info);
1926}
1927
1928/*
1929 * Init and exit routines
1930 */
1931
1932static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
1933{
1934	struct platform_device *op = chip->op;
1935
1936	if (chip->c_dma.ebus_info.regs) {
1937		ebus_dma_unregister(&chip->c_dma.ebus_info);
1938		of_iounmap(&op->resource[2], chip->c_dma.ebus_info.regs, 0x10);
1939	}
1940	if (chip->p_dma.ebus_info.regs) {
1941		ebus_dma_unregister(&chip->p_dma.ebus_info);
1942		of_iounmap(&op->resource[1], chip->p_dma.ebus_info.regs, 0x10);
1943	}
1944
1945	if (chip->port)
1946		of_iounmap(&op->resource[0], chip->port, 0x10);
1947
1948	return 0;
1949}
1950
1951static int snd_cs4231_ebus_dev_free(struct snd_device *device)
1952{
1953	struct snd_cs4231 *cp = device->device_data;
1954
1955	return snd_cs4231_ebus_free(cp);
1956}
1957
1958static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
1959	.dev_free	=	snd_cs4231_ebus_dev_free,
1960};
1961
1962static int __devinit snd_cs4231_ebus_create(struct snd_card *card,
1963					    struct platform_device *op,
1964					    int dev)
1965{
1966	struct snd_cs4231 *chip = card->private_data;
1967	int err;
1968
1969	spin_lock_init(&chip->lock);
1970	spin_lock_init(&chip->c_dma.ebus_info.lock);
1971	spin_lock_init(&chip->p_dma.ebus_info.lock);
1972	mutex_init(&chip->mce_mutex);
1973	mutex_init(&chip->open_mutex);
1974	chip->flags |= CS4231_FLAG_EBUS;
1975	chip->op = op;
1976	memcpy(&chip->image, &snd_cs4231_original_image,
1977	       sizeof(snd_cs4231_original_image));
1978	strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
1979	chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1980	chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
1981	chip->c_dma.ebus_info.client_cookie = chip;
1982	chip->c_dma.ebus_info.irq = op->archdata.irqs[0];
1983	strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
1984	chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
1985	chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
1986	chip->p_dma.ebus_info.client_cookie = chip;
1987	chip->p_dma.ebus_info.irq = op->archdata.irqs[1];
1988
1989	chip->p_dma.prepare = _ebus_dma_prepare;
1990	chip->p_dma.enable = _ebus_dma_enable;
1991	chip->p_dma.request = _ebus_dma_request;
1992	chip->p_dma.address = _ebus_dma_addr;
1993
1994	chip->c_dma.prepare = _ebus_dma_prepare;
1995	chip->c_dma.enable = _ebus_dma_enable;
1996	chip->c_dma.request = _ebus_dma_request;
1997	chip->c_dma.address = _ebus_dma_addr;
1998
1999	chip->port = of_ioremap(&op->resource[0], 0, 0x10, "cs4231");
2000	chip->p_dma.ebus_info.regs =
2001		of_ioremap(&op->resource[1], 0, 0x10, "cs4231_pdma");
2002	chip->c_dma.ebus_info.regs =
2003		of_ioremap(&op->resource[2], 0, 0x10, "cs4231_cdma");
2004	if (!chip->port || !chip->p_dma.ebus_info.regs ||
2005	    !chip->c_dma.ebus_info.regs) {
2006		snd_cs4231_ebus_free(chip);
2007		snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2008		return -EIO;
2009	}
2010
2011	if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2012		snd_cs4231_ebus_free(chip);
2013		snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n",
2014			    dev);
2015		return -EBUSY;
2016	}
2017	if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2018		snd_cs4231_ebus_free(chip);
2019		snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n",
2020			    dev);
2021		return -EBUSY;
2022	}
2023
2024	if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2025		snd_cs4231_ebus_free(chip);
2026		snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n",
2027			    dev);
2028		return -EBUSY;
2029	}
2030	if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2031		snd_cs4231_ebus_free(chip);
2032		snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2033		return -EBUSY;
2034	}
2035
2036	if (snd_cs4231_probe(chip) < 0) {
2037		snd_cs4231_ebus_free(chip);
2038		return -ENODEV;
2039	}
2040	snd_cs4231_init(chip);
2041
2042	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2043				  chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2044		snd_cs4231_ebus_free(chip);
2045		return err;
2046	}
2047
2048	return 0;
2049}
2050
2051static int __devinit cs4231_ebus_probe(struct platform_device *op)
2052{
2053	struct snd_card *card;
2054	int err;
2055
2056	err = cs4231_attach_begin(&card);
2057	if (err)
2058		return err;
2059
2060	sprintf(card->longname, "%s at 0x%llx, irq %d",
2061		card->shortname,
2062		op->resource[0].start,
2063		op->archdata.irqs[0]);
2064
2065	err = snd_cs4231_ebus_create(card, op, dev);
2066	if (err < 0) {
2067		snd_card_free(card);
2068		return err;
2069	}
2070
2071	return cs4231_attach_finish(card);
2072}
2073#endif
2074
2075static int __devinit cs4231_probe(struct platform_device *op)
2076{
2077#ifdef EBUS_SUPPORT
2078	if (!strcmp(op->dev.of_node->parent->name, "ebus"))
2079		return cs4231_ebus_probe(op);
2080#endif
2081#ifdef SBUS_SUPPORT
2082	if (!strcmp(op->dev.of_node->parent->name, "sbus") ||
2083	    !strcmp(op->dev.of_node->parent->name, "sbi"))
2084		return cs4231_sbus_probe(op);
2085#endif
2086	return -ENODEV;
2087}
2088
2089static int __devexit cs4231_remove(struct platform_device *op)
2090{
2091	struct snd_cs4231 *chip = dev_get_drvdata(&op->dev);
2092
2093	snd_card_free(chip->card);
2094
2095	return 0;
2096}
2097
2098static const struct of_device_id cs4231_match[] = {
2099	{
2100		.name = "SUNW,CS4231",
2101	},
2102	{
2103		.name = "audio",
2104		.compatible = "SUNW,CS4231",
2105	},
2106	{},
2107};
2108
2109MODULE_DEVICE_TABLE(of, cs4231_match);
2110
2111static struct platform_driver cs4231_driver = {
2112	.driver = {
2113		.name = "audio",
2114		.owner = THIS_MODULE,
2115		.of_match_table = cs4231_match,
2116	},
2117	.probe		= cs4231_probe,
2118	.remove		= __devexit_p(cs4231_remove),
2119};
2120
2121static int __init cs4231_init(void)
2122{
2123	return platform_driver_register(&cs4231_driver);
2124}
2125
2126static void __exit cs4231_exit(void)
2127{
2128	platform_driver_unregister(&cs4231_driver);
2129}
2130
2131module_init(cs4231_init);
2132module_exit(cs4231_exit);