Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[sfrench/cifs-2.6.git] / sound / sparc / cs4231.c
1 /*
2  * Driver for CS4231 sound chips found on Sparcs.
3  * Copyright (C) 2002 David S. Miller <davem@redhat.com>
4  *
5  * Based entirely upon drivers/sbus/audio/cs4231.c which is:
6  * Copyright (C) 1996, 1997, 1998, 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@suse.cz>
9  */
10
11 #include <linux/module.h>
12 #include <linux/kernel.h>
13 #include <linux/slab.h>
14 #include <linux/delay.h>
15 #include <linux/init.h>
16 #include <linux/interrupt.h>
17 #include <linux/moduleparam.h>
18
19 #include <sound/driver.h>
20 #include <sound/core.h>
21 #include <sound/pcm.h>
22 #include <sound/info.h>
23 #include <sound/control.h>
24 #include <sound/timer.h>
25 #include <sound/initval.h>
26 #include <sound/pcm_params.h>
27
28 #include <asm/io.h>
29 #include <asm/irq.h>
30
31 #ifdef CONFIG_SBUS
32 #define SBUS_SUPPORT
33 #endif
34
35 #ifdef SBUS_SUPPORT
36 #include <asm/sbus.h>
37 #endif
38
39 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
40 #define EBUS_SUPPORT
41 #endif
42
43 #ifdef EBUS_SUPPORT
44 #include <linux/pci.h>
45 #include <asm/ebus.h>
46 #endif
47
48 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
49 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
50 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
51
52 module_param_array(index, int, NULL, 0444);
53 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
54 module_param_array(id, charp, NULL, 0444);
55 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
56 module_param_array(enable, bool, NULL, 0444);
57 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
58 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
59 MODULE_DESCRIPTION("Sun CS4231");
60 MODULE_LICENSE("GPL");
61 MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
62
63 #ifdef SBUS_SUPPORT
64 struct sbus_dma_info {
65        spinlock_t      lock;
66        int             dir;
67        void __iomem    *regs;
68 };
69 #endif
70
71 struct snd_cs4231;
72 struct cs4231_dma_control {
73         void            (*prepare)(struct cs4231_dma_control *dma_cont, int dir);
74         void            (*enable)(struct cs4231_dma_control *dma_cont, int on);
75         int             (*request)(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len);
76         unsigned int    (*address)(struct cs4231_dma_control *dma_cont);
77         void            (*reset)(struct snd_cs4231 *chip); 
78         void            (*preallocate)(struct snd_cs4231 *chip, struct snd_pcm *pcm); 
79 #ifdef EBUS_SUPPORT
80         struct          ebus_dma_info   ebus_info;
81 #endif
82 #ifdef SBUS_SUPPORT
83         struct          sbus_dma_info   sbus_info;
84 #endif
85 };
86
87 struct snd_cs4231 {
88         spinlock_t              lock;
89         void __iomem            *port;
90
91         struct cs4231_dma_control       p_dma;
92         struct cs4231_dma_control       c_dma;
93
94         u32                     flags;
95 #define CS4231_FLAG_EBUS        0x00000001
96 #define CS4231_FLAG_PLAYBACK    0x00000002
97 #define CS4231_FLAG_CAPTURE     0x00000004
98
99         struct snd_card         *card;
100         struct snd_pcm          *pcm;
101         struct snd_pcm_substream        *playback_substream;
102         unsigned int            p_periods_sent;
103         struct snd_pcm_substream        *capture_substream;
104         unsigned int            c_periods_sent;
105         struct snd_timer        *timer;
106
107         unsigned short mode;
108 #define CS4231_MODE_NONE        0x0000
109 #define CS4231_MODE_PLAY        0x0001
110 #define CS4231_MODE_RECORD      0x0002
111 #define CS4231_MODE_TIMER       0x0004
112 #define CS4231_MODE_OPEN        (CS4231_MODE_PLAY|CS4231_MODE_RECORD|CS4231_MODE_TIMER)
113
114         unsigned char           image[32];      /* registers image */
115         int                     mce_bit;
116         int                     calibrate_mute;
117         struct mutex            mce_mutex;
118         struct mutex            open_mutex;
119
120         union {
121 #ifdef SBUS_SUPPORT
122                 struct sbus_dev         *sdev;
123 #endif
124 #ifdef EBUS_SUPPORT
125                 struct pci_dev          *pdev;
126 #endif
127         } dev_u;
128         unsigned int            irq[2];
129         unsigned int            regs_size;
130         struct snd_cs4231       *next;
131 };
132
133 static struct snd_cs4231 *cs4231_list;
134
135 /* Eventually we can use sound/isa/cs423x/cs4231_lib.c directly, but for
136  * now....  -DaveM
137  */
138
139 /* IO ports */
140
141 #define CS4231P(chip, x)        ((chip)->port + c_d_c_CS4231##x)
142
143 /* XXX offsets are different than PC ISA chips... */
144 #define c_d_c_CS4231REGSEL      0x0
145 #define c_d_c_CS4231REG         0x4
146 #define c_d_c_CS4231STATUS      0x8
147 #define c_d_c_CS4231PIO         0xc
148
149 /* codec registers */
150
151 #define CS4231_LEFT_INPUT       0x00    /* left input control */
152 #define CS4231_RIGHT_INPUT      0x01    /* right input control */
153 #define CS4231_AUX1_LEFT_INPUT  0x02    /* left AUX1 input control */
154 #define CS4231_AUX1_RIGHT_INPUT 0x03    /* right AUX1 input control */
155 #define CS4231_AUX2_LEFT_INPUT  0x04    /* left AUX2 input control */
156 #define CS4231_AUX2_RIGHT_INPUT 0x05    /* right AUX2 input control */
157 #define CS4231_LEFT_OUTPUT      0x06    /* left output control register */
158 #define CS4231_RIGHT_OUTPUT     0x07    /* right output control register */
159 #define CS4231_PLAYBK_FORMAT    0x08    /* clock and data format - playback - bits 7-0 MCE */
160 #define CS4231_IFACE_CTRL       0x09    /* interface control - bits 7-2 MCE */
161 #define CS4231_PIN_CTRL         0x0a    /* pin control */
162 #define CS4231_TEST_INIT        0x0b    /* test and initialization */
163 #define CS4231_MISC_INFO        0x0c    /* miscellaneaous information */
164 #define CS4231_LOOPBACK         0x0d    /* loopback control */
165 #define CS4231_PLY_UPR_CNT      0x0e    /* playback upper base count */
166 #define CS4231_PLY_LWR_CNT      0x0f    /* playback lower base count */
167 #define CS4231_ALT_FEATURE_1    0x10    /* alternate #1 feature enable */
168 #define CS4231_ALT_FEATURE_2    0x11    /* alternate #2 feature enable */
169 #define CS4231_LEFT_LINE_IN     0x12    /* left line input control */
170 #define CS4231_RIGHT_LINE_IN    0x13    /* right line input control */
171 #define CS4231_TIMER_LOW        0x14    /* timer low byte */
172 #define CS4231_TIMER_HIGH       0x15    /* timer high byte */
173 #define CS4231_LEFT_MIC_INPUT   0x16    /* left MIC input control register (InterWave only) */
174 #define CS4231_RIGHT_MIC_INPUT  0x17    /* right MIC input control register (InterWave only) */
175 #define CS4236_EXT_REG          0x17    /* extended register access */
176 #define CS4231_IRQ_STATUS       0x18    /* irq status register */
177 #define CS4231_LINE_LEFT_OUTPUT 0x19    /* left line output control register (InterWave only) */
178 #define CS4231_VERSION          0x19    /* CS4231(A) - version values */
179 #define CS4231_MONO_CTRL        0x1a    /* mono input/output control */
180 #define CS4231_LINE_RIGHT_OUTPUT 0x1b   /* right line output control register (InterWave only) */
181 #define CS4235_LEFT_MASTER      0x1b    /* left master output control */
182 #define CS4231_REC_FORMAT       0x1c    /* clock and data format - record - bits 7-0 MCE */
183 #define CS4231_PLY_VAR_FREQ     0x1d    /* playback variable frequency */
184 #define CS4235_RIGHT_MASTER     0x1d    /* right master output control */
185 #define CS4231_REC_UPR_CNT      0x1e    /* record upper count */
186 #define CS4231_REC_LWR_CNT      0x1f    /* record lower count */
187
188 /* definitions for codec register select port - CODECP( REGSEL ) */
189
190 #define CS4231_INIT             0x80    /* CODEC is initializing */
191 #define CS4231_MCE              0x40    /* mode change enable */
192 #define CS4231_TRD              0x20    /* transfer request disable */
193
194 /* definitions for codec status register - CODECP( STATUS ) */
195
196 #define CS4231_GLOBALIRQ        0x01    /* IRQ is active */
197
198 /* definitions for codec irq status - CS4231_IRQ_STATUS */
199
200 #define CS4231_PLAYBACK_IRQ     0x10
201 #define CS4231_RECORD_IRQ       0x20
202 #define CS4231_TIMER_IRQ        0x40
203 #define CS4231_ALL_IRQS         0x70
204 #define CS4231_REC_UNDERRUN     0x08
205 #define CS4231_REC_OVERRUN      0x04
206 #define CS4231_PLY_OVERRUN      0x02
207 #define CS4231_PLY_UNDERRUN     0x01
208
209 /* definitions for CS4231_LEFT_INPUT and CS4231_RIGHT_INPUT registers */
210
211 #define CS4231_ENABLE_MIC_GAIN  0x20
212
213 #define CS4231_MIXS_LINE        0x00
214 #define CS4231_MIXS_AUX1        0x40
215 #define CS4231_MIXS_MIC         0x80
216 #define CS4231_MIXS_ALL         0xc0
217
218 /* definitions for clock and data format register - CS4231_PLAYBK_FORMAT */
219
220 #define CS4231_LINEAR_8         0x00    /* 8-bit unsigned data */
221 #define CS4231_ALAW_8           0x60    /* 8-bit A-law companded */
222 #define CS4231_ULAW_8           0x20    /* 8-bit U-law companded */
223 #define CS4231_LINEAR_16        0x40    /* 16-bit twos complement data - little endian */
224 #define CS4231_LINEAR_16_BIG    0xc0    /* 16-bit twos complement data - big endian */
225 #define CS4231_ADPCM_16         0xa0    /* 16-bit ADPCM */
226 #define CS4231_STEREO           0x10    /* stereo mode */
227 /* bits 3-1 define frequency divisor */
228 #define CS4231_XTAL1            0x00    /* 24.576 crystal */
229 #define CS4231_XTAL2            0x01    /* 16.9344 crystal */
230
231 /* definitions for interface control register - CS4231_IFACE_CTRL */
232
233 #define CS4231_RECORD_PIO       0x80    /* record PIO enable */
234 #define CS4231_PLAYBACK_PIO     0x40    /* playback PIO enable */
235 #define CS4231_CALIB_MODE       0x18    /* calibration mode bits */
236 #define CS4231_AUTOCALIB        0x08    /* auto calibrate */
237 #define CS4231_SINGLE_DMA       0x04    /* use single DMA channel */
238 #define CS4231_RECORD_ENABLE    0x02    /* record enable */
239 #define CS4231_PLAYBACK_ENABLE  0x01    /* playback enable */
240
241 /* definitions for pin control register - CS4231_PIN_CTRL */
242
243 #define CS4231_IRQ_ENABLE       0x02    /* enable IRQ */
244 #define CS4231_XCTL1            0x40    /* external control #1 */
245 #define CS4231_XCTL0            0x80    /* external control #0 */
246
247 /* definitions for test and init register - CS4231_TEST_INIT */
248
249 #define CS4231_CALIB_IN_PROGRESS 0x20   /* auto calibrate in progress */
250 #define CS4231_DMA_REQUEST      0x10    /* DMA request in progress */
251
252 /* definitions for misc control register - CS4231_MISC_INFO */
253
254 #define CS4231_MODE2            0x40    /* MODE 2 */
255 #define CS4231_IW_MODE3         0x6c    /* MODE 3 - InterWave enhanced mode */
256 #define CS4231_4236_MODE3       0xe0    /* MODE 3 - CS4236+ enhanced mode */
257
258 /* definitions for alternate feature 1 register - CS4231_ALT_FEATURE_1 */
259
260 #define CS4231_DACZ             0x01    /* zero DAC when underrun */
261 #define CS4231_TIMER_ENABLE     0x40    /* codec timer enable */
262 #define CS4231_OLB              0x80    /* output level bit */
263
264 /* SBUS DMA register defines.  */
265
266 #define APCCSR  0x10UL  /* APC DMA CSR */
267 #define APCCVA  0x20UL  /* APC Capture DMA Address */
268 #define APCCC   0x24UL  /* APC Capture Count */
269 #define APCCNVA 0x28UL  /* APC Capture DMA Next Address */
270 #define APCCNC  0x2cUL  /* APC Capture Next Count */
271 #define APCPVA  0x30UL  /* APC Play DMA Address */
272 #define APCPC   0x34UL  /* APC Play Count */
273 #define APCPNVA 0x38UL  /* APC Play DMA Next Address */
274 #define APCPNC  0x3cUL  /* APC Play Next Count */
275
276 /* Defines for SBUS DMA-routines */
277
278 #define APCVA  0x0UL    /* APC DMA Address */
279 #define APCC   0x4UL    /* APC Count */
280 #define APCNVA 0x8UL    /* APC DMA Next Address */
281 #define APCNC  0xcUL    /* APC Next Count */
282 #define APC_PLAY 0x30UL /* Play registers start at 0x30 */
283 #define APC_RECORD 0x20UL /* Record registers start at 0x20 */
284
285 /* APCCSR bits */
286
287 #define APC_INT_PENDING 0x800000 /* Interrupt Pending */
288 #define APC_PLAY_INT    0x400000 /* Playback interrupt */
289 #define APC_CAPT_INT    0x200000 /* Capture interrupt */
290 #define APC_GENL_INT    0x100000 /* General interrupt */
291 #define APC_XINT_ENA    0x80000  /* General ext int. enable */
292 #define APC_XINT_PLAY   0x40000  /* Playback ext intr */
293 #define APC_XINT_CAPT   0x20000  /* Capture ext intr */
294 #define APC_XINT_GENL   0x10000  /* Error ext intr */
295 #define APC_XINT_EMPT   0x8000   /* Pipe empty interrupt (0 write to pva) */
296 #define APC_XINT_PEMP   0x4000   /* Play pipe empty (pva and pnva not set) */
297 #define APC_XINT_PNVA   0x2000   /* Playback NVA dirty */
298 #define APC_XINT_PENA   0x1000   /* play pipe empty Int enable */
299 #define APC_XINT_COVF   0x800    /* Cap data dropped on floor */
300 #define APC_XINT_CNVA   0x400    /* Capture NVA dirty */
301 #define APC_XINT_CEMP   0x200    /* Capture pipe empty (cva and cnva not set) */
302 #define APC_XINT_CENA   0x100    /* Cap. pipe empty int enable */
303 #define APC_PPAUSE      0x80     /* Pause the play DMA */
304 #define APC_CPAUSE      0x40     /* Pause the capture DMA */
305 #define APC_CDC_RESET   0x20     /* CODEC RESET */
306 #define APC_PDMA_READY  0x08     /* Play DMA Go */
307 #define APC_CDMA_READY  0x04     /* Capture DMA Go */
308 #define APC_CHIP_RESET  0x01     /* Reset the chip */
309
310 /* EBUS DMA register offsets  */
311
312 #define EBDMA_CSR       0x00UL  /* Control/Status */
313 #define EBDMA_ADDR      0x04UL  /* DMA Address */
314 #define EBDMA_COUNT     0x08UL  /* DMA Count */
315
316 /*
317  *  Some variables
318  */
319
320 static unsigned char freq_bits[14] = {
321         /* 5510 */      0x00 | CS4231_XTAL2,
322         /* 6620 */      0x0E | CS4231_XTAL2,
323         /* 8000 */      0x00 | CS4231_XTAL1,
324         /* 9600 */      0x0E | CS4231_XTAL1,
325         /* 11025 */     0x02 | CS4231_XTAL2,
326         /* 16000 */     0x02 | CS4231_XTAL1,
327         /* 18900 */     0x04 | CS4231_XTAL2,
328         /* 22050 */     0x06 | CS4231_XTAL2,
329         /* 27042 */     0x04 | CS4231_XTAL1,
330         /* 32000 */     0x06 | CS4231_XTAL1,
331         /* 33075 */     0x0C | CS4231_XTAL2,
332         /* 37800 */     0x08 | CS4231_XTAL2,
333         /* 44100 */     0x0A | CS4231_XTAL2,
334         /* 48000 */     0x0C | CS4231_XTAL1
335 };
336
337 static unsigned int rates[14] = {
338         5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
339         27042, 32000, 33075, 37800, 44100, 48000
340 };
341
342 static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
343         .count  = 14,
344         .list   = rates,
345 };
346
347 static int snd_cs4231_xrate(struct snd_pcm_runtime *runtime)
348 {
349         return snd_pcm_hw_constraint_list(runtime, 0,
350                                           SNDRV_PCM_HW_PARAM_RATE,
351                                           &hw_constraints_rates);
352 }
353
354 static unsigned char snd_cs4231_original_image[32] =
355 {
356         0x00,                   /* 00/00 - lic */
357         0x00,                   /* 01/01 - ric */
358         0x9f,                   /* 02/02 - la1ic */
359         0x9f,                   /* 03/03 - ra1ic */
360         0x9f,                   /* 04/04 - la2ic */
361         0x9f,                   /* 05/05 - ra2ic */
362         0xbf,                   /* 06/06 - loc */
363         0xbf,                   /* 07/07 - roc */
364         0x20,                   /* 08/08 - pdfr */
365         CS4231_AUTOCALIB,       /* 09/09 - ic */
366         0x00,                   /* 0a/10 - pc */
367         0x00,                   /* 0b/11 - ti */
368         CS4231_MODE2,           /* 0c/12 - mi */
369         0x00,                   /* 0d/13 - lbc */
370         0x00,                   /* 0e/14 - pbru */
371         0x00,                   /* 0f/15 - pbrl */
372         0x80,                   /* 10/16 - afei */
373         0x01,                   /* 11/17 - afeii */
374         0x9f,                   /* 12/18 - llic */
375         0x9f,                   /* 13/19 - rlic */
376         0x00,                   /* 14/20 - tlb */
377         0x00,                   /* 15/21 - thb */
378         0x00,                   /* 16/22 - la3mic/reserved */
379         0x00,                   /* 17/23 - ra3mic/reserved */
380         0x00,                   /* 18/24 - afs */
381         0x00,                   /* 19/25 - lamoc/version */
382         0x00,                   /* 1a/26 - mioc */
383         0x00,                   /* 1b/27 - ramoc/reserved */
384         0x20,                   /* 1c/28 - cdfr */
385         0x00,                   /* 1d/29 - res4 */
386         0x00,                   /* 1e/30 - cbru */
387         0x00,                   /* 1f/31 - cbrl */
388 };
389
390 static u8 __cs4231_readb(struct snd_cs4231 *cp, void __iomem *reg_addr)
391 {
392 #ifdef EBUS_SUPPORT
393         if (cp->flags & CS4231_FLAG_EBUS) {
394                 return readb(reg_addr);
395         } else {
396 #endif
397 #ifdef SBUS_SUPPORT
398                 return sbus_readb(reg_addr);
399 #endif
400 #ifdef EBUS_SUPPORT
401         }
402 #endif
403 }
404
405 static void __cs4231_writeb(struct snd_cs4231 *cp, u8 val, void __iomem *reg_addr)
406 {
407 #ifdef EBUS_SUPPORT
408         if (cp->flags & CS4231_FLAG_EBUS) {
409                 return writeb(val, reg_addr);
410         } else {
411 #endif
412 #ifdef SBUS_SUPPORT
413                 return sbus_writeb(val, reg_addr);
414 #endif
415 #ifdef EBUS_SUPPORT
416         }
417 #endif
418 }
419
420 /*
421  *  Basic I/O functions
422  */
423
424 static void snd_cs4231_outm(struct snd_cs4231 *chip, unsigned char reg,
425                      unsigned char mask, unsigned char value)
426 {
427         int timeout;
428         unsigned char tmp;
429
430         for (timeout = 250;
431              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
432              timeout--)
433                 udelay(100);
434 #ifdef CONFIG_SND_DEBUG
435         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
436                 snd_printdd("outm: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
437 #endif
438         if (chip->calibrate_mute) {
439                 chip->image[reg] &= mask;
440                 chip->image[reg] |= value;
441         } else {
442                 __cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
443                 mb();
444                 tmp = (chip->image[reg] & mask) | value;
445                 __cs4231_writeb(chip, tmp, CS4231P(chip, REG));
446                 chip->image[reg] = tmp;
447                 mb();
448         }
449 }
450
451 static void snd_cs4231_dout(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
452 {
453         int timeout;
454
455         for (timeout = 250;
456              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
457              timeout--)
458                 udelay(100);
459 #ifdef CONFIG_SND_DEBUG
460         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
461                 snd_printdd("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
462 #endif
463         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
464         __cs4231_writeb(chip, value, CS4231P(chip, REG));
465         mb();
466 }
467
468 static void snd_cs4231_out(struct snd_cs4231 *chip, unsigned char reg, unsigned char value)
469 {
470         int timeout;
471
472         for (timeout = 250;
473              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
474              timeout--)
475                 udelay(100);
476 #ifdef CONFIG_SND_DEBUG
477         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
478                 snd_printdd("out: auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
479 #endif
480         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
481         __cs4231_writeb(chip, value, CS4231P(chip, REG));
482         chip->image[reg] = value;
483         mb();
484 }
485
486 static unsigned char snd_cs4231_in(struct snd_cs4231 *chip, unsigned char reg)
487 {
488         int timeout;
489         unsigned char ret;
490
491         for (timeout = 250;
492              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
493              timeout--)
494                 udelay(100);
495 #ifdef CONFIG_SND_DEBUG
496         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
497                 snd_printdd("in: auto calibration time out - reg = 0x%x\n", reg);
498 #endif
499         __cs4231_writeb(chip, chip->mce_bit | reg, CS4231P(chip, REGSEL));
500         mb();
501         ret = __cs4231_readb(chip, CS4231P(chip, REG));
502         return ret;
503 }
504
505 /*
506  *  CS4231 detection / MCE routines
507  */
508
509 static void snd_cs4231_busy_wait(struct snd_cs4231 *chip)
510 {
511         int timeout;
512
513         /* huh.. looks like this sequence is proper for CS4231A chip (GUS MAX) */
514         for (timeout = 5; timeout > 0; timeout--)
515                 __cs4231_readb(chip, CS4231P(chip, REGSEL));
516
517         /* end of cleanup sequence */
518         for (timeout = 500;
519              timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT);
520              timeout--)
521                 udelay(1000);
522 }
523
524 static void snd_cs4231_mce_up(struct snd_cs4231 *chip)
525 {
526         unsigned long flags;
527         int timeout;
528
529         spin_lock_irqsave(&chip->lock, flags);
530         for (timeout = 250; timeout > 0 && (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT); timeout--)
531                 udelay(100);
532 #ifdef CONFIG_SND_DEBUG
533         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
534                 snd_printdd("mce_up - auto calibration time out (0)\n");
535 #endif
536         chip->mce_bit |= CS4231_MCE;
537         timeout = __cs4231_readb(chip, CS4231P(chip, REGSEL));
538         if (timeout == 0x80)
539                 snd_printdd("mce_up [%p]: serious init problem - codec still busy\n", chip->port);
540         if (!(timeout & CS4231_MCE))
541                 __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f), CS4231P(chip, REGSEL));
542         spin_unlock_irqrestore(&chip->lock, flags);
543 }
544
545 static void snd_cs4231_mce_down(struct snd_cs4231 *chip)
546 {
547         unsigned long flags;
548         int timeout;
549
550         spin_lock_irqsave(&chip->lock, flags);
551         snd_cs4231_busy_wait(chip);
552 #ifdef CONFIG_SND_DEBUG
553         if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
554                 snd_printdd("mce_down [%p] - auto calibration time out (0)\n", CS4231P(chip, REGSEL));
555 #endif
556         chip->mce_bit &= ~CS4231_MCE;
557         timeout = __cs4231_readb(chip, CS4231P(chip, REGSEL));
558         __cs4231_writeb(chip, chip->mce_bit | (timeout & 0x1f), CS4231P(chip, REGSEL));
559         if (timeout == 0x80)
560                 snd_printdd("mce_down [%p]: serious init problem - codec still busy\n", chip->port);
561         if ((timeout & CS4231_MCE) == 0) {
562                 spin_unlock_irqrestore(&chip->lock, flags);
563                 return;
564         }
565         snd_cs4231_busy_wait(chip);
566
567         /* calibration process */
568
569         for (timeout = 500; timeout > 0 && (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0; timeout--)
570                 udelay(100);
571         if ((snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) == 0) {
572                 snd_printd("cs4231_mce_down - auto calibration time out (1)\n");
573                 spin_unlock_irqrestore(&chip->lock, flags);
574                 return;
575         }
576
577         /* in 10ms increments, check condition, up to 250ms */
578         timeout = 25;
579         while (snd_cs4231_in(chip, CS4231_TEST_INIT) & CS4231_CALIB_IN_PROGRESS) {
580                 spin_unlock_irqrestore(&chip->lock, flags);
581                 if (--timeout < 0) {
582                         snd_printk("mce_down - auto calibration time out (2)\n");
583                         return;
584                 }
585                 msleep(10);
586                 spin_lock_irqsave(&chip->lock, flags);
587         }
588
589         /* in 10ms increments, check condition, up to 100ms */
590         timeout = 10;
591         while (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT) {
592                 spin_unlock_irqrestore(&chip->lock, flags);
593                 if (--timeout < 0) {
594                         snd_printk("mce_down - auto calibration time out (3)\n");
595                         return;
596                 }
597                 msleep(10);
598                 spin_lock_irqsave(&chip->lock, flags);
599         }
600         spin_unlock_irqrestore(&chip->lock, flags);
601 }
602
603 static void snd_cs4231_advance_dma(struct cs4231_dma_control *dma_cont,
604                                    struct snd_pcm_substream *substream,
605                                    unsigned int *periods_sent)
606 {
607         struct snd_pcm_runtime *runtime = substream->runtime;
608
609         while (1) {
610                 unsigned int period_size = snd_pcm_lib_period_bytes(substream);
611                 unsigned int offset = period_size * (*periods_sent);
612
613                 BUG_ON(period_size >= (1 << 24));
614
615                 if (dma_cont->request(dma_cont, runtime->dma_addr + offset, period_size))
616                         return;
617                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
618         }
619 }
620
621 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
622                                unsigned int what, int on)
623 {
624         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
625         struct cs4231_dma_control *dma_cont;
626
627         if (what & CS4231_PLAYBACK_ENABLE) {
628                 dma_cont = &chip->p_dma;
629                 if (on) {
630                         dma_cont->prepare(dma_cont, 0);
631                         dma_cont->enable(dma_cont, 1);
632                         snd_cs4231_advance_dma(dma_cont,
633                                 chip->playback_substream,
634                                 &chip->p_periods_sent);
635                 } else {
636                         dma_cont->enable(dma_cont, 0);
637                 }
638         }
639         if (what & CS4231_RECORD_ENABLE) {
640                 dma_cont = &chip->c_dma;
641                 if (on) {
642                         dma_cont->prepare(dma_cont, 1);
643                         dma_cont->enable(dma_cont, 1);
644                         snd_cs4231_advance_dma(dma_cont,
645                                 chip->capture_substream,
646                                 &chip->c_periods_sent);
647                 } else {
648                         dma_cont->enable(dma_cont, 0);
649                 }
650         }
651 }
652
653 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
654 {
655         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
656         int result = 0;
657
658         switch (cmd) {
659         case SNDRV_PCM_TRIGGER_START:
660         case SNDRV_PCM_TRIGGER_STOP:
661         {
662                 unsigned int what = 0;
663                 struct snd_pcm_substream *s;
664                 unsigned long flags;
665
666                 snd_pcm_group_for_each_entry(s, substream) {
667                         if (s == chip->playback_substream) {
668                                 what |= CS4231_PLAYBACK_ENABLE;
669                                 snd_pcm_trigger_done(s, substream);
670                         } else if (s == chip->capture_substream) {
671                                 what |= CS4231_RECORD_ENABLE;
672                                 snd_pcm_trigger_done(s, substream);
673                         }
674                 }
675
676                 spin_lock_irqsave(&chip->lock, flags);
677                 if (cmd == SNDRV_PCM_TRIGGER_START) {
678                         cs4231_dma_trigger(substream, what, 1);
679                         chip->image[CS4231_IFACE_CTRL] |= what;
680                 } else {
681                         cs4231_dma_trigger(substream, what, 0);
682                         chip->image[CS4231_IFACE_CTRL] &= ~what;
683                 }
684                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
685                                chip->image[CS4231_IFACE_CTRL]);
686                 spin_unlock_irqrestore(&chip->lock, flags);
687                 break;
688         }
689         default:
690                 result = -EINVAL;
691                 break;
692         }
693
694         return result;
695 }
696
697 /*
698  *  CODEC I/O
699  */
700
701 static unsigned char snd_cs4231_get_rate(unsigned int rate)
702 {
703         int i;
704
705         for (i = 0; i < 14; i++)
706                 if (rate == rates[i])
707                         return freq_bits[i];
708         // snd_BUG();
709         return freq_bits[13];
710 }
711
712 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format, int channels)
713 {
714         unsigned char rformat;
715
716         rformat = CS4231_LINEAR_8;
717         switch (format) {
718         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = CS4231_ULAW_8; break;
719         case SNDRV_PCM_FORMAT_A_LAW:    rformat = CS4231_ALAW_8; break;
720         case SNDRV_PCM_FORMAT_S16_LE:   rformat = CS4231_LINEAR_16; break;
721         case SNDRV_PCM_FORMAT_S16_BE:   rformat = CS4231_LINEAR_16_BIG; break;
722         case SNDRV_PCM_FORMAT_IMA_ADPCM:        rformat = CS4231_ADPCM_16; break;
723         }
724         if (channels > 1)
725                 rformat |= CS4231_STEREO;
726         return rformat;
727 }
728
729 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
730 {
731         unsigned long flags;
732
733         mute = mute ? 1 : 0;
734         spin_lock_irqsave(&chip->lock, flags);
735         if (chip->calibrate_mute == mute) {
736                 spin_unlock_irqrestore(&chip->lock, flags);
737                 return;
738         }
739         if (!mute) {
740                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
741                                 chip->image[CS4231_LEFT_INPUT]);
742                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
743                                 chip->image[CS4231_RIGHT_INPUT]);
744                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
745                                 chip->image[CS4231_LOOPBACK]);
746         }
747         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
748                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
749         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
750                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
751         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
752                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
753         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
754                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
755         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
756                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
757         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
758                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
759         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
760                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
761         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
762                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
763         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
764                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
765         chip->calibrate_mute = mute;
766         spin_unlock_irqrestore(&chip->lock, flags);
767 }
768
769 static void snd_cs4231_playback_format(struct snd_cs4231 *chip, struct snd_pcm_hw_params *params,
770                                        unsigned char pdfr)
771 {
772         unsigned long flags;
773
774         mutex_lock(&chip->mce_mutex);
775         snd_cs4231_calibrate_mute(chip, 1);
776
777         snd_cs4231_mce_up(chip);
778
779         spin_lock_irqsave(&chip->lock, flags);
780         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
781                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
782                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
783                        pdfr);
784         spin_unlock_irqrestore(&chip->lock, flags);
785
786         snd_cs4231_mce_down(chip);
787
788         snd_cs4231_calibrate_mute(chip, 0);
789         mutex_unlock(&chip->mce_mutex);
790 }
791
792 static void snd_cs4231_capture_format(struct snd_cs4231 *chip, struct snd_pcm_hw_params *params,
793                                       unsigned char cdfr)
794 {
795         unsigned long flags;
796
797         mutex_lock(&chip->mce_mutex);
798         snd_cs4231_calibrate_mute(chip, 1);
799
800         snd_cs4231_mce_up(chip);
801
802         spin_lock_irqsave(&chip->lock, flags);
803         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
804                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
805                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
806                                (cdfr & 0x0f));
807                 spin_unlock_irqrestore(&chip->lock, flags);
808                 snd_cs4231_mce_down(chip);
809                 snd_cs4231_mce_up(chip);
810                 spin_lock_irqsave(&chip->lock, flags);
811         }
812         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
813         spin_unlock_irqrestore(&chip->lock, flags);
814
815         snd_cs4231_mce_down(chip);
816
817         snd_cs4231_calibrate_mute(chip, 0);
818         mutex_unlock(&chip->mce_mutex);
819 }
820
821 /*
822  *  Timer interface
823  */
824
825 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
826 {
827         struct snd_cs4231 *chip = snd_timer_chip(timer);
828
829         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
830 }
831
832 static int snd_cs4231_timer_start(struct snd_timer *timer)
833 {
834         unsigned long flags;
835         unsigned int ticks;
836         struct snd_cs4231 *chip = snd_timer_chip(timer);
837
838         spin_lock_irqsave(&chip->lock, flags);
839         ticks = timer->sticks;
840         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
841             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
842             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
843                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
844                                chip->image[CS4231_TIMER_HIGH] =
845                                (unsigned char) (ticks >> 8));
846                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
847                                chip->image[CS4231_TIMER_LOW] =
848                                (unsigned char) ticks);
849                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
850                                chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
851         }
852         spin_unlock_irqrestore(&chip->lock, flags);
853
854         return 0;
855 }
856
857 static int snd_cs4231_timer_stop(struct snd_timer *timer)
858 {
859         unsigned long flags;
860         struct snd_cs4231 *chip = snd_timer_chip(timer);
861
862         spin_lock_irqsave(&chip->lock, flags);
863         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
864                        chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
865         spin_unlock_irqrestore(&chip->lock, flags);
866
867         return 0;
868 }
869
870 static void __init snd_cs4231_init(struct snd_cs4231 *chip)
871 {
872         unsigned long flags;
873
874         snd_cs4231_mce_down(chip);
875
876 #ifdef SNDRV_DEBUG_MCE
877         snd_printdd("init: (1)\n");
878 #endif
879         snd_cs4231_mce_up(chip);
880         spin_lock_irqsave(&chip->lock, flags);
881         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
882                                             CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
883                                             CS4231_CALIB_MODE);
884         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
885         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
886         spin_unlock_irqrestore(&chip->lock, flags);
887         snd_cs4231_mce_down(chip);
888
889 #ifdef SNDRV_DEBUG_MCE
890         snd_printdd("init: (2)\n");
891 #endif
892
893         snd_cs4231_mce_up(chip);
894         spin_lock_irqsave(&chip->lock, flags);
895         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
896         spin_unlock_irqrestore(&chip->lock, flags);
897         snd_cs4231_mce_down(chip);
898
899 #ifdef SNDRV_DEBUG_MCE
900         snd_printdd("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
901 #endif
902
903         spin_lock_irqsave(&chip->lock, flags);
904         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
905         spin_unlock_irqrestore(&chip->lock, flags);
906
907         snd_cs4231_mce_up(chip);
908         spin_lock_irqsave(&chip->lock, flags);
909         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
910         spin_unlock_irqrestore(&chip->lock, flags);
911         snd_cs4231_mce_down(chip);
912
913 #ifdef SNDRV_DEBUG_MCE
914         snd_printdd("init: (4)\n");
915 #endif
916
917         snd_cs4231_mce_up(chip);
918         spin_lock_irqsave(&chip->lock, flags);
919         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
920         spin_unlock_irqrestore(&chip->lock, flags);
921         snd_cs4231_mce_down(chip);
922
923 #ifdef SNDRV_DEBUG_MCE
924         snd_printdd("init: (5)\n");
925 #endif
926 }
927
928 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
929 {
930         unsigned long flags;
931
932         mutex_lock(&chip->open_mutex);
933         if ((chip->mode & mode)) {
934                 mutex_unlock(&chip->open_mutex);
935                 return -EAGAIN;
936         }
937         if (chip->mode & CS4231_MODE_OPEN) {
938                 chip->mode |= mode;
939                 mutex_unlock(&chip->open_mutex);
940                 return 0;
941         }
942         /* ok. now enable and ack CODEC IRQ */
943         spin_lock_irqsave(&chip->lock, flags);
944         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
945                        CS4231_RECORD_IRQ |
946                        CS4231_TIMER_IRQ);
947         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
948         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
949         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
950
951         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
952                        CS4231_RECORD_IRQ |
953                        CS4231_TIMER_IRQ);
954         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
955
956         spin_unlock_irqrestore(&chip->lock, flags);
957
958         chip->mode = mode;
959         mutex_unlock(&chip->open_mutex);
960         return 0;
961 }
962
963 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
964 {
965         unsigned long flags;
966
967         mutex_lock(&chip->open_mutex);
968         chip->mode &= ~mode;
969         if (chip->mode & CS4231_MODE_OPEN) {
970                 mutex_unlock(&chip->open_mutex);
971                 return;
972         }
973         snd_cs4231_calibrate_mute(chip, 1);
974
975         /* disable IRQ */
976         spin_lock_irqsave(&chip->lock, flags);
977         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
978         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
979         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
980
981         /* now disable record & playback */
982
983         if (chip->image[CS4231_IFACE_CTRL] &
984             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
985              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
986                 spin_unlock_irqrestore(&chip->lock, flags);
987                 snd_cs4231_mce_up(chip);
988                 spin_lock_irqsave(&chip->lock, flags);
989                 chip->image[CS4231_IFACE_CTRL] &=
990                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
991                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
992                 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
993                 spin_unlock_irqrestore(&chip->lock, flags);
994                 snd_cs4231_mce_down(chip);
995                 spin_lock_irqsave(&chip->lock, flags);
996         }
997
998         /* clear IRQ again */
999         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
1000         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1001         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1002         spin_unlock_irqrestore(&chip->lock, flags);
1003
1004         snd_cs4231_calibrate_mute(chip, 0);
1005
1006         chip->mode = 0;
1007         mutex_unlock(&chip->open_mutex);
1008 }
1009
1010 /*
1011  *  timer open/close
1012  */
1013
1014 static int snd_cs4231_timer_open(struct snd_timer *timer)
1015 {
1016         struct snd_cs4231 *chip = snd_timer_chip(timer);
1017         snd_cs4231_open(chip, CS4231_MODE_TIMER);
1018         return 0;
1019 }
1020
1021 static int snd_cs4231_timer_close(struct snd_timer * timer)
1022 {
1023         struct snd_cs4231 *chip = snd_timer_chip(timer);
1024         snd_cs4231_close(chip, CS4231_MODE_TIMER);
1025         return 0;
1026 }
1027
1028 static struct snd_timer_hardware snd_cs4231_timer_table =
1029 {
1030         .flags          =       SNDRV_TIMER_HW_AUTO,
1031         .resolution     =       9945,
1032         .ticks          =       65535,
1033         .open           =       snd_cs4231_timer_open,
1034         .close          =       snd_cs4231_timer_close,
1035         .c_resolution   =       snd_cs4231_timer_resolution,
1036         .start          =       snd_cs4231_timer_start,
1037         .stop           =       snd_cs4231_timer_stop,
1038 };
1039
1040 /*
1041  *  ok.. exported functions..
1042  */
1043
1044 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
1045                                          struct snd_pcm_hw_params *hw_params)
1046 {
1047         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1048         unsigned char new_pdfr;
1049         int err;
1050
1051         if ((err = snd_pcm_lib_malloc_pages(substream,
1052                                             params_buffer_bytes(hw_params))) < 0)
1053                 return err;
1054         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
1055                                          params_channels(hw_params)) |
1056                 snd_cs4231_get_rate(params_rate(hw_params));
1057         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
1058
1059         return 0;
1060 }
1061
1062 static int snd_cs4231_playback_hw_free(struct snd_pcm_substream *substream)
1063 {
1064         return snd_pcm_lib_free_pages(substream);
1065 }
1066
1067 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
1068 {
1069         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1070         struct snd_pcm_runtime *runtime = substream->runtime;
1071         unsigned long flags;
1072
1073         spin_lock_irqsave(&chip->lock, flags);
1074
1075         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
1076                                             CS4231_PLAYBACK_PIO);
1077
1078         BUG_ON(runtime->period_size > 0xffff + 1);
1079
1080         chip->p_periods_sent = 0;
1081         spin_unlock_irqrestore(&chip->lock, flags);
1082
1083         return 0;
1084 }
1085
1086 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
1087                                         struct snd_pcm_hw_params *hw_params)
1088 {
1089         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1090         unsigned char new_cdfr;
1091         int err;
1092
1093         if ((err = snd_pcm_lib_malloc_pages(substream,
1094                                             params_buffer_bytes(hw_params))) < 0)
1095                 return err;
1096         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
1097                                          params_channels(hw_params)) |
1098                 snd_cs4231_get_rate(params_rate(hw_params));
1099         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
1100
1101         return 0;
1102 }
1103
1104 static int snd_cs4231_capture_hw_free(struct snd_pcm_substream *substream)
1105 {
1106         return snd_pcm_lib_free_pages(substream);
1107 }
1108
1109 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
1110 {
1111         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1112         unsigned long flags;
1113
1114         spin_lock_irqsave(&chip->lock, flags);
1115         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
1116                                             CS4231_RECORD_PIO);
1117
1118
1119         chip->c_periods_sent = 0;
1120         spin_unlock_irqrestore(&chip->lock, flags);
1121
1122         return 0;
1123 }
1124
1125 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
1126 {
1127         unsigned long flags;
1128         unsigned char res;
1129
1130         spin_lock_irqsave(&chip->lock, flags);
1131         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
1132         spin_unlock_irqrestore(&chip->lock, flags);
1133
1134         if (res & (0x08 | 0x02))        /* detect overrange only above 0dB; may be user selectable? */
1135                 chip->capture_substream->runtime->overrange++;
1136 }
1137
1138 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
1139 {
1140         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
1141                 snd_pcm_period_elapsed(chip->playback_substream);
1142                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
1143                                             &chip->p_periods_sent);
1144         }
1145 }
1146
1147 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
1148 {
1149         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
1150                 snd_pcm_period_elapsed(chip->capture_substream);
1151                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
1152                                             &chip->c_periods_sent);
1153         }
1154 }
1155
1156 static snd_pcm_uframes_t snd_cs4231_playback_pointer(struct snd_pcm_substream *substream)
1157 {
1158         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1159         struct cs4231_dma_control *dma_cont = &chip->p_dma;
1160         size_t ptr;
1161         
1162         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1163                 return 0;
1164         ptr = dma_cont->address(dma_cont);
1165         if (ptr != 0)
1166                 ptr -= substream->runtime->dma_addr;
1167         
1168         return bytes_to_frames(substream->runtime, ptr);
1169 }
1170
1171 static snd_pcm_uframes_t snd_cs4231_capture_pointer(struct snd_pcm_substream *substream)
1172 {
1173         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1174         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1175         size_t ptr;
1176         
1177         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1178                 return 0;
1179         ptr = dma_cont->address(dma_cont);
1180         if (ptr != 0)
1181                 ptr -= substream->runtime->dma_addr;
1182         
1183         return bytes_to_frames(substream->runtime, ptr);
1184 }
1185
1186 /*
1187
1188  */
1189
1190 static int __init snd_cs4231_probe(struct snd_cs4231 *chip)
1191 {
1192         unsigned long flags;
1193         int i, id, vers;
1194         unsigned char *ptr;
1195
1196         id = vers = 0;
1197         for (i = 0; i < 50; i++) {
1198                 mb();
1199                 if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
1200                         udelay(2000);
1201                 else {
1202                         spin_lock_irqsave(&chip->lock, flags);
1203                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1204                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1205                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1206                         spin_unlock_irqrestore(&chip->lock, flags);
1207                         if (id == 0x0a)
1208                                 break;  /* this is valid value */
1209                 }
1210         }
1211         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1212         if (id != 0x0a)
1213                 return -ENODEV; /* no valid device found */
1214
1215         spin_lock_irqsave(&chip->lock, flags);
1216
1217
1218         /* Reset DMA engine (sbus only).  */
1219         chip->p_dma.reset(chip);
1220
1221         __cs4231_readb(chip, CS4231P(chip, STATUS));    /* clear any pendings IRQ */
1222         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));
1223         mb();
1224
1225         spin_unlock_irqrestore(&chip->lock, flags);
1226
1227         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1228         chip->image[CS4231_IFACE_CTRL] =
1229                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1230         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1231         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1232         if (vers & 0x20)
1233                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1234
1235         ptr = (unsigned char *) &chip->image;
1236
1237         snd_cs4231_mce_down(chip);
1238
1239         spin_lock_irqsave(&chip->lock, flags);
1240
1241         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1242                 snd_cs4231_out(chip, i, *ptr++);
1243
1244         spin_unlock_irqrestore(&chip->lock, flags);
1245
1246         snd_cs4231_mce_up(chip);
1247
1248         snd_cs4231_mce_down(chip);
1249
1250         mdelay(2);
1251
1252         return 0;               /* all things are ok.. */
1253 }
1254
1255 static struct snd_pcm_hardware snd_cs4231_playback =
1256 {
1257         .info                   = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1258                                  SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
1259         .formats                = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
1260                                  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1261                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1262                                  SNDRV_PCM_FMTBIT_S16_BE),
1263         .rates                  = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1264         .rate_min               = 5510,
1265         .rate_max               = 48000,
1266         .channels_min           = 1,
1267         .channels_max           = 2,
1268         .buffer_bytes_max       = (32*1024),
1269         .period_bytes_min       = 64,
1270         .period_bytes_max       = (32*1024),
1271         .periods_min            = 1,
1272         .periods_max            = 1024,
1273 };
1274
1275 static struct snd_pcm_hardware snd_cs4231_capture =
1276 {
1277         .info                   = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1278                                  SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
1279         .formats                = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
1280                                  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1281                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1282                                  SNDRV_PCM_FMTBIT_S16_BE),
1283         .rates                  = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1284         .rate_min               = 5510,
1285         .rate_max               = 48000,
1286         .channels_min           = 1,
1287         .channels_max           = 2,
1288         .buffer_bytes_max       = (32*1024),
1289         .period_bytes_min       = 64,
1290         .period_bytes_max       = (32*1024),
1291         .periods_min            = 1,
1292         .periods_max            = 1024,
1293 };
1294
1295 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1296 {
1297         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1298         struct snd_pcm_runtime *runtime = substream->runtime;
1299         int err;
1300
1301         runtime->hw = snd_cs4231_playback;
1302
1303         if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
1304                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1305                 return err;
1306         }
1307         chip->playback_substream = substream;
1308         chip->p_periods_sent = 0;
1309         snd_pcm_set_sync(substream);
1310         snd_cs4231_xrate(runtime);
1311
1312         return 0;
1313 }
1314
1315 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1316 {
1317         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1318         struct snd_pcm_runtime *runtime = substream->runtime;
1319         int err;
1320
1321         runtime->hw = snd_cs4231_capture;
1322
1323         if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
1324                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1325                 return err;
1326         }
1327         chip->capture_substream = substream;
1328         chip->c_periods_sent = 0;
1329         snd_pcm_set_sync(substream);
1330         snd_cs4231_xrate(runtime);
1331
1332         return 0;
1333 }
1334
1335 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1336 {
1337         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1338
1339         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1340         chip->playback_substream = NULL;
1341
1342         return 0;
1343 }
1344
1345 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1346 {
1347         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1348
1349         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1350         chip->capture_substream = NULL;
1351
1352         return 0;
1353 }
1354
1355 /* XXX We can do some power-management, in particular on EBUS using
1356  * XXX the audio AUXIO register...
1357  */
1358
1359 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1360         .open           =       snd_cs4231_playback_open,
1361         .close          =       snd_cs4231_playback_close,
1362         .ioctl          =       snd_pcm_lib_ioctl,
1363         .hw_params      =       snd_cs4231_playback_hw_params,
1364         .hw_free        =       snd_cs4231_playback_hw_free,
1365         .prepare        =       snd_cs4231_playback_prepare,
1366         .trigger        =       snd_cs4231_trigger,
1367         .pointer        =       snd_cs4231_playback_pointer,
1368 };
1369
1370 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1371         .open           =       snd_cs4231_capture_open,
1372         .close          =       snd_cs4231_capture_close,
1373         .ioctl          =       snd_pcm_lib_ioctl,
1374         .hw_params      =       snd_cs4231_capture_hw_params,
1375         .hw_free        =       snd_cs4231_capture_hw_free,
1376         .prepare        =       snd_cs4231_capture_prepare,
1377         .trigger        =       snd_cs4231_trigger,
1378         .pointer        =       snd_cs4231_capture_pointer,
1379 };
1380
1381 static int __init snd_cs4231_pcm(struct snd_cs4231 *chip)
1382 {
1383         struct snd_pcm *pcm;
1384         int err;
1385
1386         if ((err = snd_pcm_new(chip->card, "CS4231", 0, 1, 1, &pcm)) < 0)
1387                 return err;
1388
1389         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
1390         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
1391         
1392         /* global setup */
1393         pcm->private_data = chip;
1394         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1395         strcpy(pcm->name, "CS4231");
1396
1397         chip->p_dma.preallocate(chip, pcm);
1398
1399         chip->pcm = pcm;
1400
1401         return 0;
1402 }
1403
1404 static int __init snd_cs4231_timer(struct snd_cs4231 *chip)
1405 {
1406         struct snd_timer *timer;
1407         struct snd_timer_id tid;
1408         int err;
1409
1410         /* Timer initialization */
1411         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1412         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1413         tid.card = chip->card->number;
1414         tid.device = 0;
1415         tid.subdevice = 0;
1416         if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1417                 return err;
1418         strcpy(timer->name, "CS4231");
1419         timer->private_data = chip;
1420         timer->hw = snd_cs4231_timer_table;
1421         chip->timer = timer;
1422
1423         return 0;
1424 }
1425         
1426 /*
1427  *  MIXER part
1428  */
1429
1430 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1431                                struct snd_ctl_elem_info *uinfo)
1432 {
1433         static char *texts[4] = {
1434                 "Line", "CD", "Mic", "Mix"
1435         };
1436         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1437
1438         snd_assert(chip->card != NULL, return -EINVAL);
1439         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1440         uinfo->count = 2;
1441         uinfo->value.enumerated.items = 4;
1442         if (uinfo->value.enumerated.item > 3)
1443                 uinfo->value.enumerated.item = 3;
1444         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1445
1446         return 0;
1447 }
1448
1449 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1450                               struct snd_ctl_elem_value *ucontrol)
1451 {
1452         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1453         unsigned long flags;
1454         
1455         spin_lock_irqsave(&chip->lock, flags);
1456         ucontrol->value.enumerated.item[0] =
1457                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1458         ucontrol->value.enumerated.item[1] =
1459                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1460         spin_unlock_irqrestore(&chip->lock, flags);
1461
1462         return 0;
1463 }
1464
1465 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1466                               struct snd_ctl_elem_value *ucontrol)
1467 {
1468         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1469         unsigned long flags;
1470         unsigned short left, right;
1471         int change;
1472         
1473         if (ucontrol->value.enumerated.item[0] > 3 ||
1474             ucontrol->value.enumerated.item[1] > 3)
1475                 return -EINVAL;
1476         left = ucontrol->value.enumerated.item[0] << 6;
1477         right = ucontrol->value.enumerated.item[1] << 6;
1478
1479         spin_lock_irqsave(&chip->lock, flags);
1480
1481         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1482         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1483         change = left != chip->image[CS4231_LEFT_INPUT] ||
1484                  right != chip->image[CS4231_RIGHT_INPUT];
1485         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1486         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1487
1488         spin_unlock_irqrestore(&chip->lock, flags);
1489
1490         return change;
1491 }
1492
1493 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1494                                   struct snd_ctl_elem_info *uinfo)
1495 {
1496         int mask = (kcontrol->private_value >> 16) & 0xff;
1497
1498         uinfo->type = (mask == 1) ?
1499                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1500         uinfo->count = 1;
1501         uinfo->value.integer.min = 0;
1502         uinfo->value.integer.max = mask;
1503
1504         return 0;
1505 }
1506
1507 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1508                                  struct snd_ctl_elem_value *ucontrol)
1509 {
1510         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1511         unsigned long flags;
1512         int reg = kcontrol->private_value & 0xff;
1513         int shift = (kcontrol->private_value >> 8) & 0xff;
1514         int mask = (kcontrol->private_value >> 16) & 0xff;
1515         int invert = (kcontrol->private_value >> 24) & 0xff;
1516         
1517         spin_lock_irqsave(&chip->lock, flags);
1518
1519         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1520
1521         spin_unlock_irqrestore(&chip->lock, flags);
1522
1523         if (invert)
1524                 ucontrol->value.integer.value[0] =
1525                         (mask - ucontrol->value.integer.value[0]);
1526
1527         return 0;
1528 }
1529
1530 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1531                                  struct snd_ctl_elem_value *ucontrol)
1532 {
1533         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1534         unsigned long flags;
1535         int reg = kcontrol->private_value & 0xff;
1536         int shift = (kcontrol->private_value >> 8) & 0xff;
1537         int mask = (kcontrol->private_value >> 16) & 0xff;
1538         int invert = (kcontrol->private_value >> 24) & 0xff;
1539         int change;
1540         unsigned short val;
1541         
1542         val = (ucontrol->value.integer.value[0] & mask);
1543         if (invert)
1544                 val = mask - val;
1545         val <<= shift;
1546
1547         spin_lock_irqsave(&chip->lock, flags);
1548
1549         val = (chip->image[reg] & ~(mask << shift)) | val;
1550         change = val != chip->image[reg];
1551         snd_cs4231_out(chip, reg, val);
1552
1553         spin_unlock_irqrestore(&chip->lock, flags);
1554
1555         return change;
1556 }
1557
1558 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1559                                   struct snd_ctl_elem_info *uinfo)
1560 {
1561         int mask = (kcontrol->private_value >> 24) & 0xff;
1562
1563         uinfo->type = mask == 1 ?
1564                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1565         uinfo->count = 2;
1566         uinfo->value.integer.min = 0;
1567         uinfo->value.integer.max = mask;
1568
1569         return 0;
1570 }
1571
1572 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1573                                  struct snd_ctl_elem_value *ucontrol)
1574 {
1575         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1576         unsigned long flags;
1577         int left_reg = kcontrol->private_value & 0xff;
1578         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1579         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1580         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1581         int mask = (kcontrol->private_value >> 24) & 0xff;
1582         int invert = (kcontrol->private_value >> 22) & 1;
1583         
1584         spin_lock_irqsave(&chip->lock, flags);
1585
1586         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1587         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1588
1589         spin_unlock_irqrestore(&chip->lock, flags);
1590
1591         if (invert) {
1592                 ucontrol->value.integer.value[0] =
1593                         (mask - ucontrol->value.integer.value[0]);
1594                 ucontrol->value.integer.value[1] =
1595                         (mask - ucontrol->value.integer.value[1]);
1596         }
1597
1598         return 0;
1599 }
1600
1601 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1602                                  struct snd_ctl_elem_value *ucontrol)
1603 {
1604         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1605         unsigned long flags;
1606         int left_reg = kcontrol->private_value & 0xff;
1607         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1608         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1609         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1610         int mask = (kcontrol->private_value >> 24) & 0xff;
1611         int invert = (kcontrol->private_value >> 22) & 1;
1612         int change;
1613         unsigned short val1, val2;
1614         
1615         val1 = ucontrol->value.integer.value[0] & mask;
1616         val2 = ucontrol->value.integer.value[1] & mask;
1617         if (invert) {
1618                 val1 = mask - val1;
1619                 val2 = mask - val2;
1620         }
1621         val1 <<= shift_left;
1622         val2 <<= shift_right;
1623
1624         spin_lock_irqsave(&chip->lock, flags);
1625
1626         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1627         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1628         change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1629         snd_cs4231_out(chip, left_reg, val1);
1630         snd_cs4231_out(chip, right_reg, val2);
1631
1632         spin_unlock_irqrestore(&chip->lock, flags);
1633
1634         return change;
1635 }
1636
1637 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1638 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1639   .info = snd_cs4231_info_single, \
1640   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single, \
1641   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1642
1643 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1644 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1645   .info = snd_cs4231_info_double, \
1646   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double, \
1647   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1648
1649 static struct snd_kcontrol_new snd_cs4231_controls[] __initdata = {
1650 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1651 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1652 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1653 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1654 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1655 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1656 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1657 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1658 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1659 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1660 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1661 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1662 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
1663 {
1664         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1665         .name   = "Capture Source",
1666         .info   = snd_cs4231_info_mux,
1667         .get    = snd_cs4231_get_mux,
1668         .put    = snd_cs4231_put_mux,
1669 },
1670 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
1671 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1672 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1673 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1674 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1675 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1676 };
1677                                         
1678 static int __init snd_cs4231_mixer(struct snd_cs4231 *chip)
1679 {
1680         struct snd_card *card;
1681         int err, idx;
1682
1683         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1684
1685         card = chip->card;
1686
1687         strcpy(card->mixername, chip->pcm->name);
1688
1689         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1690                 if ((err = snd_ctl_add(card,
1691                                        snd_ctl_new1(&snd_cs4231_controls[idx],
1692                                                     chip))) < 0)
1693                         return err;
1694         }
1695         return 0;
1696 }
1697
1698 static int dev;
1699
1700 static int __init cs4231_attach_begin(struct snd_card **rcard)
1701 {
1702         struct snd_card *card;
1703
1704         *rcard = NULL;
1705
1706         if (dev >= SNDRV_CARDS)
1707                 return -ENODEV;
1708
1709         if (!enable[dev]) {
1710                 dev++;
1711                 return -ENOENT;
1712         }
1713
1714         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1715         if (card == NULL)
1716                 return -ENOMEM;
1717
1718         strcpy(card->driver, "CS4231");
1719         strcpy(card->shortname, "Sun CS4231");
1720
1721         *rcard = card;
1722         return 0;
1723 }
1724
1725 static int __init cs4231_attach_finish(struct snd_card *card, struct snd_cs4231 *chip)
1726 {
1727         int err;
1728
1729         if ((err = snd_cs4231_pcm(chip)) < 0)
1730                 goto out_err;
1731
1732         if ((err = snd_cs4231_mixer(chip)) < 0)
1733                 goto out_err;
1734
1735         if ((err = snd_cs4231_timer(chip)) < 0)
1736                 goto out_err;
1737
1738         if ((err = snd_card_register(card)) < 0)
1739                 goto out_err;
1740
1741         chip->next = cs4231_list;
1742         cs4231_list = chip;
1743
1744         dev++;
1745         return 0;
1746
1747 out_err:
1748         snd_card_free(card);
1749         return err;
1750 }
1751
1752 #ifdef SBUS_SUPPORT
1753
1754 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id)
1755 {
1756         unsigned long flags;
1757         unsigned char status;
1758         u32 csr;
1759         struct snd_cs4231 *chip = dev_id;
1760
1761         /*This is IRQ is not raised by the cs4231*/
1762         if (!(__cs4231_readb(chip, CS4231P(chip, STATUS)) & CS4231_GLOBALIRQ))
1763                 return IRQ_NONE;
1764
1765         /* ACK the APC interrupt. */
1766         csr = sbus_readl(chip->port + APCCSR);
1767
1768         sbus_writel(csr, chip->port + APCCSR);
1769
1770         if ((csr & APC_PDMA_READY) && 
1771             (csr & APC_PLAY_INT) &&
1772             (csr & APC_XINT_PNVA) &&
1773             !(csr & APC_XINT_EMPT))
1774                         snd_cs4231_play_callback(chip);
1775
1776         if ((csr & APC_CDMA_READY) && 
1777             (csr & APC_CAPT_INT) &&
1778             (csr & APC_XINT_CNVA) &&
1779             !(csr & APC_XINT_EMPT))
1780                         snd_cs4231_capture_callback(chip);
1781         
1782         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1783
1784         if (status & CS4231_TIMER_IRQ) {
1785                 if (chip->timer)
1786                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1787         }               
1788
1789         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1790                 snd_cs4231_overrange(chip);
1791
1792         /* ACK the CS4231 interrupt. */
1793         spin_lock_irqsave(&chip->lock, flags);
1794         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1795         spin_unlock_irqrestore(&chip->lock, flags);
1796
1797         return IRQ_HANDLED;
1798 }
1799
1800 /*
1801  * SBUS DMA routines
1802  */
1803
1804 static int sbus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
1805 {
1806         unsigned long flags;
1807         u32 test, csr;
1808         int err;
1809         struct sbus_dma_info *base = &dma_cont->sbus_info;
1810         
1811         if (len >= (1 << 24))
1812                 return -EINVAL;
1813         spin_lock_irqsave(&base->lock, flags);
1814         csr = sbus_readl(base->regs + APCCSR);
1815         err = -EINVAL;
1816         test = APC_CDMA_READY;
1817         if ( base->dir == APC_PLAY )
1818                 test = APC_PDMA_READY;
1819         if (!(csr & test))
1820                 goto out;
1821         err = -EBUSY;
1822         test = APC_XINT_CNVA;
1823         if ( base->dir == APC_PLAY )
1824                 test = APC_XINT_PNVA;
1825         if (!(csr & test))
1826                 goto out;
1827         err = 0;
1828         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1829         sbus_writel(len, base->regs + base->dir + APCNC);
1830 out:
1831         spin_unlock_irqrestore(&base->lock, flags);
1832         return err;
1833 }
1834
1835 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1836 {
1837         unsigned long flags;
1838         u32 csr, test;
1839         struct sbus_dma_info *base = &dma_cont->sbus_info;
1840
1841         spin_lock_irqsave(&base->lock, flags);
1842         csr = sbus_readl(base->regs + APCCSR);
1843         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1844                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1845                  APC_XINT_PENA;
1846         if ( base->dir == APC_RECORD )
1847                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1848                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1849         csr |= test;
1850         sbus_writel(csr, base->regs + APCCSR);
1851         spin_unlock_irqrestore(&base->lock, flags);
1852 }
1853
1854 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1855 {
1856         unsigned long flags;
1857         u32 csr, shift;
1858         struct sbus_dma_info *base = &dma_cont->sbus_info;
1859
1860         spin_lock_irqsave(&base->lock, flags);
1861         if (!on) {
1862                 sbus_writel(0, base->regs + base->dir + APCNC);
1863                 sbus_writel(0, base->regs + base->dir + APCNVA);
1864                 sbus_writel(0, base->regs + base->dir + APCC);
1865                 sbus_writel(0, base->regs + base->dir + APCVA);
1866
1867                 /* ACK any APC interrupts. */
1868                 csr = sbus_readl(base->regs + APCCSR);
1869                 sbus_writel(csr, base->regs + APCCSR);
1870         } 
1871         udelay(1000);
1872         csr = sbus_readl(base->regs + APCCSR);
1873         shift = 0;
1874         if ( base->dir == APC_PLAY )
1875                 shift = 1;
1876         if (on)
1877                 csr &= ~(APC_CPAUSE << shift);
1878         else
1879                 csr |= (APC_CPAUSE << shift); 
1880         sbus_writel(csr, base->regs + APCCSR);
1881         if (on)
1882                 csr |= (APC_CDMA_READY << shift);
1883         else
1884                 csr &= ~(APC_CDMA_READY << shift);
1885         sbus_writel(csr, base->regs + APCCSR);
1886         
1887         spin_unlock_irqrestore(&base->lock, flags);
1888 }
1889
1890 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1891 {
1892         struct sbus_dma_info *base = &dma_cont->sbus_info;
1893
1894         return sbus_readl(base->regs + base->dir + APCVA);
1895 }
1896
1897 static void sbus_dma_reset(struct snd_cs4231 *chip)
1898 {
1899         sbus_writel(APC_CHIP_RESET, chip->port + APCCSR);
1900         sbus_writel(0x00, chip->port + APCCSR);
1901         sbus_writel(sbus_readl(chip->port + APCCSR) | APC_CDC_RESET,
1902                     chip->port + APCCSR);
1903   
1904         udelay(20);
1905   
1906         sbus_writel(sbus_readl(chip->port + APCCSR) & ~APC_CDC_RESET,
1907                     chip->port + APCCSR);
1908         sbus_writel(sbus_readl(chip->port + APCCSR) | (APC_XINT_ENA |
1909                        APC_XINT_PENA |
1910                        APC_XINT_CENA),
1911                        chip->port + APCCSR);
1912 }
1913
1914 static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1915 {
1916         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
1917                                               snd_dma_sbus_data(chip->dev_u.sdev),
1918                                               64*1024, 128*1024);
1919 }
1920
1921 /*
1922  * Init and exit routines
1923  */
1924
1925 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1926 {
1927         if (chip->irq[0])
1928                 free_irq(chip->irq[0], chip);
1929
1930         if (chip->port)
1931                 sbus_iounmap(chip->port, chip->regs_size);
1932
1933         kfree(chip);
1934
1935         return 0;
1936 }
1937
1938 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1939 {
1940         struct snd_cs4231 *cp = device->device_data;
1941
1942         return snd_cs4231_sbus_free(cp);
1943 }
1944
1945 static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1946         .dev_free       =       snd_cs4231_sbus_dev_free,
1947 };
1948
1949 static int __init snd_cs4231_sbus_create(struct snd_card *card,
1950                                          struct sbus_dev *sdev,
1951                                          int dev,
1952                                          struct snd_cs4231 **rchip)
1953 {
1954         struct snd_cs4231 *chip;
1955         int err;
1956
1957         *rchip = NULL;
1958         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1959         if (chip == NULL)
1960                 return -ENOMEM;
1961
1962         spin_lock_init(&chip->lock);
1963         spin_lock_init(&chip->c_dma.sbus_info.lock);
1964         spin_lock_init(&chip->p_dma.sbus_info.lock);
1965         mutex_init(&chip->mce_mutex);
1966         mutex_init(&chip->open_mutex);
1967         chip->card = card;
1968         chip->dev_u.sdev = sdev;
1969         chip->regs_size = sdev->reg_addrs[0].reg_size;
1970         memcpy(&chip->image, &snd_cs4231_original_image,
1971                sizeof(snd_cs4231_original_image));
1972
1973         chip->port = sbus_ioremap(&sdev->resource[0], 0,
1974                                   chip->regs_size, "cs4231");
1975         if (!chip->port) {
1976                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1977                 return -EIO;
1978         }
1979
1980         chip->c_dma.sbus_info.regs = chip->port;
1981         chip->p_dma.sbus_info.regs = chip->port;
1982         chip->c_dma.sbus_info.dir = APC_RECORD;
1983         chip->p_dma.sbus_info.dir = APC_PLAY;
1984
1985         chip->p_dma.prepare = sbus_dma_prepare;
1986         chip->p_dma.enable = sbus_dma_enable;
1987         chip->p_dma.request = sbus_dma_request;
1988         chip->p_dma.address = sbus_dma_addr;
1989         chip->p_dma.reset = sbus_dma_reset;
1990         chip->p_dma.preallocate = sbus_dma_preallocate;
1991
1992         chip->c_dma.prepare = sbus_dma_prepare;
1993         chip->c_dma.enable = sbus_dma_enable;
1994         chip->c_dma.request = sbus_dma_request;
1995         chip->c_dma.address = sbus_dma_addr;
1996         chip->c_dma.reset = sbus_dma_reset;
1997         chip->c_dma.preallocate = sbus_dma_preallocate;
1998
1999         if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
2000                         IRQF_SHARED, "cs4231", chip)) {
2001                 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %d\n",
2002                             dev, sdev->irqs[0]);
2003                 snd_cs4231_sbus_free(chip);
2004                 return -EBUSY;
2005         }
2006         chip->irq[0] = sdev->irqs[0];
2007
2008         if (snd_cs4231_probe(chip) < 0) {
2009                 snd_cs4231_sbus_free(chip);
2010                 return -ENODEV;
2011         }
2012         snd_cs4231_init(chip);
2013
2014         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2015                                   chip, &snd_cs4231_sbus_dev_ops)) < 0) {
2016                 snd_cs4231_sbus_free(chip);
2017                 return err;
2018         }
2019
2020         *rchip = chip;
2021         return 0;
2022 }
2023
2024 static int __init cs4231_sbus_attach(struct sbus_dev *sdev)
2025 {
2026         struct resource *rp = &sdev->resource[0];
2027         struct snd_cs4231 *cp;
2028         struct snd_card *card;
2029         int err;
2030
2031         err = cs4231_attach_begin(&card);
2032         if (err)
2033                 return err;
2034
2035         sprintf(card->longname, "%s at 0x%02lx:0x%016Lx, irq %d",
2036                 card->shortname,
2037                 rp->flags & 0xffL,
2038                 (unsigned long long)rp->start,
2039                 sdev->irqs[0]);
2040
2041         if ((err = snd_cs4231_sbus_create(card, sdev, dev, &cp)) < 0) {
2042                 snd_card_free(card);
2043                 return err;
2044         }
2045
2046         return cs4231_attach_finish(card, cp);
2047 }
2048 #endif
2049
2050 #ifdef EBUS_SUPPORT
2051
2052 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event, void *cookie)
2053 {
2054         struct snd_cs4231 *chip = cookie;
2055         
2056         snd_cs4231_play_callback(chip);
2057 }
2058
2059 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p, int event, void *cookie)
2060 {
2061         struct snd_cs4231 *chip = cookie;
2062
2063         snd_cs4231_capture_callback(chip);
2064 }
2065
2066 /*
2067  * EBUS DMA wrappers
2068  */
2069
2070 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
2071 {
2072         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
2073 }
2074
2075 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
2076 {
2077         ebus_dma_enable(&dma_cont->ebus_info, on);
2078 }
2079
2080 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
2081 {
2082         ebus_dma_prepare(&dma_cont->ebus_info, dir);
2083 }
2084
2085 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
2086 {
2087         return ebus_dma_addr(&dma_cont->ebus_info);
2088 }
2089
2090 static void _ebus_dma_reset(struct snd_cs4231 *chip)
2091 {
2092         return;
2093 }
2094
2095 static void _ebus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
2096 {
2097         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
2098                                       snd_dma_pci_data(chip->dev_u.pdev),
2099                                       64*1024, 128*1024);
2100 }
2101
2102 /*
2103  * Init and exit routines
2104  */
2105
2106 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
2107 {
2108         if (chip->c_dma.ebus_info.regs) {
2109                 ebus_dma_unregister(&chip->c_dma.ebus_info);
2110                 iounmap(chip->c_dma.ebus_info.regs);
2111         }
2112         if (chip->p_dma.ebus_info.regs) {
2113                 ebus_dma_unregister(&chip->p_dma.ebus_info);
2114                 iounmap(chip->p_dma.ebus_info.regs);
2115         }
2116
2117         if (chip->port)
2118                 iounmap(chip->port);
2119
2120         kfree(chip);
2121
2122         return 0;
2123 }
2124
2125 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
2126 {
2127         struct snd_cs4231 *cp = device->device_data;
2128
2129         return snd_cs4231_ebus_free(cp);
2130 }
2131
2132 static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
2133         .dev_free       =       snd_cs4231_ebus_dev_free,
2134 };
2135
2136 static int __init snd_cs4231_ebus_create(struct snd_card *card,
2137                                          struct linux_ebus_device *edev,
2138                                          int dev,
2139                                          struct snd_cs4231 **rchip)
2140 {
2141         struct snd_cs4231 *chip;
2142         int err;
2143
2144         *rchip = NULL;
2145         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
2146         if (chip == NULL)
2147                 return -ENOMEM;
2148
2149         spin_lock_init(&chip->lock);
2150         spin_lock_init(&chip->c_dma.ebus_info.lock);
2151         spin_lock_init(&chip->p_dma.ebus_info.lock);
2152         mutex_init(&chip->mce_mutex);
2153         mutex_init(&chip->open_mutex);
2154         chip->flags |= CS4231_FLAG_EBUS;
2155         chip->card = card;
2156         chip->dev_u.pdev = edev->bus->self;
2157         memcpy(&chip->image, &snd_cs4231_original_image,
2158                sizeof(snd_cs4231_original_image));
2159         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
2160         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2161         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
2162         chip->c_dma.ebus_info.client_cookie = chip;
2163         chip->c_dma.ebus_info.irq = edev->irqs[0];
2164         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
2165         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2166         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
2167         chip->p_dma.ebus_info.client_cookie = chip;
2168         chip->p_dma.ebus_info.irq = edev->irqs[1];
2169
2170         chip->p_dma.prepare = _ebus_dma_prepare;
2171         chip->p_dma.enable = _ebus_dma_enable;
2172         chip->p_dma.request = _ebus_dma_request;
2173         chip->p_dma.address = _ebus_dma_addr;
2174         chip->p_dma.reset = _ebus_dma_reset;
2175         chip->p_dma.preallocate = _ebus_dma_preallocate;
2176
2177         chip->c_dma.prepare = _ebus_dma_prepare;
2178         chip->c_dma.enable = _ebus_dma_enable;
2179         chip->c_dma.request = _ebus_dma_request;
2180         chip->c_dma.address = _ebus_dma_addr;
2181         chip->c_dma.reset = _ebus_dma_reset;
2182         chip->c_dma.preallocate = _ebus_dma_preallocate;
2183
2184         chip->port = ioremap(edev->resource[0].start, 0x10);
2185         chip->p_dma.ebus_info.regs = ioremap(edev->resource[1].start, 0x10);
2186         chip->c_dma.ebus_info.regs = ioremap(edev->resource[2].start, 0x10);
2187         if (!chip->port || !chip->p_dma.ebus_info.regs || !chip->c_dma.ebus_info.regs) {
2188                 snd_cs4231_ebus_free(chip);
2189                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2190                 return -EIO;
2191         }
2192
2193         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2194                 snd_cs4231_ebus_free(chip);
2195                 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n", dev);
2196                 return -EBUSY;
2197         }
2198         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2199                 snd_cs4231_ebus_free(chip);
2200                 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n", dev);
2201                 return -EBUSY;
2202         }
2203
2204         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2205                 snd_cs4231_ebus_free(chip);
2206                 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n", dev);
2207                 return -EBUSY;
2208         }
2209         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2210                 snd_cs4231_ebus_free(chip);
2211                 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2212                 return -EBUSY;
2213         }
2214
2215         if (snd_cs4231_probe(chip) < 0) {
2216                 snd_cs4231_ebus_free(chip);
2217                 return -ENODEV;
2218         }
2219         snd_cs4231_init(chip);
2220
2221         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2222                                   chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2223                 snd_cs4231_ebus_free(chip);
2224                 return err;
2225         }
2226
2227         *rchip = chip;
2228         return 0;
2229 }
2230
2231 static int __init cs4231_ebus_attach(struct linux_ebus_device *edev)
2232 {
2233         struct snd_card *card;
2234         struct snd_cs4231 *chip;
2235         int err;
2236
2237         err = cs4231_attach_begin(&card);
2238         if (err)
2239                 return err;
2240
2241         sprintf(card->longname, "%s at 0x%lx, irq %d",
2242                 card->shortname,
2243                 edev->resource[0].start,
2244                 edev->irqs[0]);
2245
2246         if ((err = snd_cs4231_ebus_create(card, edev, dev, &chip)) < 0) {
2247                 snd_card_free(card);
2248                 return err;
2249         }
2250
2251         return cs4231_attach_finish(card, chip);
2252 }
2253 #endif
2254
2255 static int __init cs4231_init(void)
2256 {
2257 #ifdef SBUS_SUPPORT
2258         struct sbus_bus *sbus;
2259         struct sbus_dev *sdev;
2260 #endif
2261 #ifdef EBUS_SUPPORT
2262         struct linux_ebus *ebus;
2263         struct linux_ebus_device *edev;
2264 #endif
2265         int found;
2266
2267         found = 0;
2268
2269 #ifdef SBUS_SUPPORT
2270         for_all_sbusdev(sdev, sbus) {
2271                 if (!strcmp(sdev->prom_name, "SUNW,CS4231")) {
2272                         if (cs4231_sbus_attach(sdev) == 0)
2273                                 found++;
2274                 }
2275         }
2276 #endif
2277 #ifdef EBUS_SUPPORT
2278         for_each_ebus(ebus) {
2279                 for_each_ebusdev(edev, ebus) {
2280                         int match = 0;
2281
2282                         if (!strcmp(edev->prom_node->name, "SUNW,CS4231")) {
2283                                 match = 1;
2284                         } else if (!strcmp(edev->prom_node->name, "audio")) {
2285                                 const char *compat;
2286
2287                                 compat = of_get_property(edev->prom_node,
2288                                                          "compatible", NULL);
2289                                 if (compat && !strcmp(compat, "SUNW,CS4231"))
2290                                         match = 1;
2291                         }
2292
2293                         if (match &&
2294                             cs4231_ebus_attach(edev) == 0)
2295                                 found++;
2296                 }
2297         }
2298 #endif
2299
2300
2301         return (found > 0) ? 0 : -EIO;
2302 }
2303
2304 static void __exit cs4231_exit(void)
2305 {
2306         struct snd_cs4231 *p = cs4231_list;
2307
2308         while (p != NULL) {
2309                 struct snd_cs4231 *next = p->next;
2310
2311                 snd_card_free(p->card);
2312
2313                 p = next;
2314         }
2315
2316         cs4231_list = NULL;
2317 }
2318
2319 module_init(cs4231_init);
2320 module_exit(cs4231_exit);