[PATCH] m68k: Moved initialisation of conswitchp from subarches to global arch setup
[linux-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/config.h>
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/slab.h>
15 #include <linux/delay.h>
16 #include <linux/init.h>
17 #include <linux/interrupt.h>
18 #include <linux/moduleparam.h>
19
20 #include <sound/driver.h>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/info.h>
24 #include <sound/control.h>
25 #include <sound/timer.h>
26 #include <sound/initval.h>
27 #include <sound/pcm_params.h>
28
29 #include <asm/io.h>
30 #include <asm/irq.h>
31
32 #ifdef CONFIG_SBUS
33 #define SBUS_SUPPORT
34 #endif
35
36 #ifdef SBUS_SUPPORT
37 #include <asm/sbus.h>
38 #endif
39
40 #if defined(CONFIG_PCI) && defined(CONFIG_SPARC64)
41 #define EBUS_SUPPORT
42 #endif
43
44 #ifdef EBUS_SUPPORT
45 #include <linux/pci.h>
46 #include <asm/ebus.h>
47 #endif
48
49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
50 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
51 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;      /* Enable this card */
52
53 module_param_array(index, int, NULL, 0444);
54 MODULE_PARM_DESC(index, "Index value for Sun CS4231 soundcard.");
55 module_param_array(id, charp, NULL, 0444);
56 MODULE_PARM_DESC(id, "ID string for Sun CS4231 soundcard.");
57 module_param_array(enable, bool, NULL, 0444);
58 MODULE_PARM_DESC(enable, "Enable Sun CS4231 soundcard.");
59 MODULE_AUTHOR("Jaroslav Kysela, Derrick J. Brashear and David S. Miller");
60 MODULE_DESCRIPTION("Sun CS4231");
61 MODULE_LICENSE("GPL");
62 MODULE_SUPPORTED_DEVICE("{{Sun,CS4231}}");
63
64 #ifdef SBUS_SUPPORT
65 struct sbus_dma_info {
66        spinlock_t      lock;
67        int             dir;
68        void __iomem    *regs;
69 };
70 #endif
71
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_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 semaphore        mce_mutex;
118         struct semaphore        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                 if (period_size >= (1 << 24))
614                         BUG();
615
616                 if (dma_cont->request(dma_cont, runtime->dma_addr + offset, period_size))
617                         return;
618                 (*periods_sent) = ((*periods_sent) + 1) % runtime->periods;
619         }
620 }
621
622 static void cs4231_dma_trigger(struct snd_pcm_substream *substream,
623                                unsigned int what, int on)
624 {
625         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
626         struct cs4231_dma_control *dma_cont;
627
628         if (what & CS4231_PLAYBACK_ENABLE) {
629                 dma_cont = &chip->p_dma;
630                 if (on) {
631                         dma_cont->prepare(dma_cont, 0);
632                         dma_cont->enable(dma_cont, 1);
633                         snd_cs4231_advance_dma(dma_cont,
634                                 chip->playback_substream,
635                                 &chip->p_periods_sent);
636                 } else {
637                         dma_cont->enable(dma_cont, 0);
638                 }
639         }
640         if (what & CS4231_RECORD_ENABLE) {
641                 dma_cont = &chip->c_dma;
642                 if (on) {
643                         dma_cont->prepare(dma_cont, 1);
644                         dma_cont->enable(dma_cont, 1);
645                         snd_cs4231_advance_dma(dma_cont,
646                                 chip->capture_substream,
647                                 &chip->c_periods_sent);
648                 } else {
649                         dma_cont->enable(dma_cont, 0);
650                 }
651         }
652 }
653
654 static int snd_cs4231_trigger(struct snd_pcm_substream *substream, int cmd)
655 {
656         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
657         int result = 0;
658
659         switch (cmd) {
660         case SNDRV_PCM_TRIGGER_START:
661         case SNDRV_PCM_TRIGGER_STOP:
662         {
663                 unsigned int what = 0;
664                 struct snd_pcm_substream *s;
665                 struct list_head *pos;
666                 unsigned long flags;
667
668                 snd_pcm_group_for_each(pos, substream) {
669                         s = snd_pcm_group_substream_entry(pos);
670                         if (s == chip->playback_substream) {
671                                 what |= CS4231_PLAYBACK_ENABLE;
672                                 snd_pcm_trigger_done(s, substream);
673                         } else if (s == chip->capture_substream) {
674                                 what |= CS4231_RECORD_ENABLE;
675                                 snd_pcm_trigger_done(s, substream);
676                         }
677                 }
678
679                 spin_lock_irqsave(&chip->lock, flags);
680                 if (cmd == SNDRV_PCM_TRIGGER_START) {
681                         cs4231_dma_trigger(substream, what, 1);
682                         chip->image[CS4231_IFACE_CTRL] |= what;
683                 } else {
684                         cs4231_dma_trigger(substream, what, 0);
685                         chip->image[CS4231_IFACE_CTRL] &= ~what;
686                 }
687                 snd_cs4231_out(chip, CS4231_IFACE_CTRL,
688                                chip->image[CS4231_IFACE_CTRL]);
689                 spin_unlock_irqrestore(&chip->lock, flags);
690                 break;
691         }
692         default:
693                 result = -EINVAL;
694                 break;
695         }
696
697         return result;
698 }
699
700 /*
701  *  CODEC I/O
702  */
703
704 static unsigned char snd_cs4231_get_rate(unsigned int rate)
705 {
706         int i;
707
708         for (i = 0; i < 14; i++)
709                 if (rate == rates[i])
710                         return freq_bits[i];
711         // snd_BUG();
712         return freq_bits[13];
713 }
714
715 static unsigned char snd_cs4231_get_format(struct snd_cs4231 *chip, int format, int channels)
716 {
717         unsigned char rformat;
718
719         rformat = CS4231_LINEAR_8;
720         switch (format) {
721         case SNDRV_PCM_FORMAT_MU_LAW:   rformat = CS4231_ULAW_8; break;
722         case SNDRV_PCM_FORMAT_A_LAW:    rformat = CS4231_ALAW_8; break;
723         case SNDRV_PCM_FORMAT_S16_LE:   rformat = CS4231_LINEAR_16; break;
724         case SNDRV_PCM_FORMAT_S16_BE:   rformat = CS4231_LINEAR_16_BIG; break;
725         case SNDRV_PCM_FORMAT_IMA_ADPCM:        rformat = CS4231_ADPCM_16; break;
726         }
727         if (channels > 1)
728                 rformat |= CS4231_STEREO;
729         return rformat;
730 }
731
732 static void snd_cs4231_calibrate_mute(struct snd_cs4231 *chip, int mute)
733 {
734         unsigned long flags;
735
736         mute = mute ? 1 : 0;
737         spin_lock_irqsave(&chip->lock, flags);
738         if (chip->calibrate_mute == mute) {
739                 spin_unlock_irqrestore(&chip->lock, flags);
740                 return;
741         }
742         if (!mute) {
743                 snd_cs4231_dout(chip, CS4231_LEFT_INPUT,
744                                 chip->image[CS4231_LEFT_INPUT]);
745                 snd_cs4231_dout(chip, CS4231_RIGHT_INPUT,
746                                 chip->image[CS4231_RIGHT_INPUT]);
747                 snd_cs4231_dout(chip, CS4231_LOOPBACK,
748                                 chip->image[CS4231_LOOPBACK]);
749         }
750         snd_cs4231_dout(chip, CS4231_AUX1_LEFT_INPUT,
751                         mute ? 0x80 : chip->image[CS4231_AUX1_LEFT_INPUT]);
752         snd_cs4231_dout(chip, CS4231_AUX1_RIGHT_INPUT,
753                         mute ? 0x80 : chip->image[CS4231_AUX1_RIGHT_INPUT]);
754         snd_cs4231_dout(chip, CS4231_AUX2_LEFT_INPUT,
755                         mute ? 0x80 : chip->image[CS4231_AUX2_LEFT_INPUT]);
756         snd_cs4231_dout(chip, CS4231_AUX2_RIGHT_INPUT,
757                         mute ? 0x80 : chip->image[CS4231_AUX2_RIGHT_INPUT]);
758         snd_cs4231_dout(chip, CS4231_LEFT_OUTPUT,
759                         mute ? 0x80 : chip->image[CS4231_LEFT_OUTPUT]);
760         snd_cs4231_dout(chip, CS4231_RIGHT_OUTPUT,
761                         mute ? 0x80 : chip->image[CS4231_RIGHT_OUTPUT]);
762         snd_cs4231_dout(chip, CS4231_LEFT_LINE_IN,
763                         mute ? 0x80 : chip->image[CS4231_LEFT_LINE_IN]);
764         snd_cs4231_dout(chip, CS4231_RIGHT_LINE_IN,
765                         mute ? 0x80 : chip->image[CS4231_RIGHT_LINE_IN]);
766         snd_cs4231_dout(chip, CS4231_MONO_CTRL,
767                         mute ? 0xc0 : chip->image[CS4231_MONO_CTRL]);
768         chip->calibrate_mute = mute;
769         spin_unlock_irqrestore(&chip->lock, flags);
770 }
771
772 static void snd_cs4231_playback_format(struct snd_cs4231 *chip, struct snd_pcm_hw_params *params,
773                                        unsigned char pdfr)
774 {
775         unsigned long flags;
776
777         down(&chip->mce_mutex);
778         snd_cs4231_calibrate_mute(chip, 1);
779
780         snd_cs4231_mce_up(chip);
781
782         spin_lock_irqsave(&chip->lock, flags);
783         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
784                        (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) ?
785                        (pdfr & 0xf0) | (chip->image[CS4231_REC_FORMAT] & 0x0f) :
786                        pdfr);
787         spin_unlock_irqrestore(&chip->lock, flags);
788
789         snd_cs4231_mce_down(chip);
790
791         snd_cs4231_calibrate_mute(chip, 0);
792         up(&chip->mce_mutex);
793 }
794
795 static void snd_cs4231_capture_format(struct snd_cs4231 *chip, struct snd_pcm_hw_params *params,
796                                       unsigned char cdfr)
797 {
798         unsigned long flags;
799
800         down(&chip->mce_mutex);
801         snd_cs4231_calibrate_mute(chip, 1);
802
803         snd_cs4231_mce_up(chip);
804
805         spin_lock_irqsave(&chip->lock, flags);
806         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE)) {
807                 snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT,
808                                ((chip->image[CS4231_PLAYBK_FORMAT]) & 0xf0) |
809                                (cdfr & 0x0f));
810                 spin_unlock_irqrestore(&chip->lock, flags);
811                 snd_cs4231_mce_down(chip);
812                 snd_cs4231_mce_up(chip);
813                 spin_lock_irqsave(&chip->lock, flags);
814         }
815         snd_cs4231_out(chip, CS4231_REC_FORMAT, cdfr);
816         spin_unlock_irqrestore(&chip->lock, flags);
817
818         snd_cs4231_mce_down(chip);
819
820         snd_cs4231_calibrate_mute(chip, 0);
821         up(&chip->mce_mutex);
822 }
823
824 /*
825  *  Timer interface
826  */
827
828 static unsigned long snd_cs4231_timer_resolution(struct snd_timer *timer)
829 {
830         struct snd_cs4231 *chip = snd_timer_chip(timer);
831
832         return chip->image[CS4231_PLAYBK_FORMAT] & 1 ? 9969 : 9920;
833 }
834
835 static int snd_cs4231_timer_start(struct snd_timer *timer)
836 {
837         unsigned long flags;
838         unsigned int ticks;
839         struct snd_cs4231 *chip = snd_timer_chip(timer);
840
841         spin_lock_irqsave(&chip->lock, flags);
842         ticks = timer->sticks;
843         if ((chip->image[CS4231_ALT_FEATURE_1] & CS4231_TIMER_ENABLE) == 0 ||
844             (unsigned char)(ticks >> 8) != chip->image[CS4231_TIMER_HIGH] ||
845             (unsigned char)ticks != chip->image[CS4231_TIMER_LOW]) {
846                 snd_cs4231_out(chip, CS4231_TIMER_HIGH,
847                                chip->image[CS4231_TIMER_HIGH] =
848                                (unsigned char) (ticks >> 8));
849                 snd_cs4231_out(chip, CS4231_TIMER_LOW,
850                                chip->image[CS4231_TIMER_LOW] =
851                                (unsigned char) ticks);
852                 snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
853                                chip->image[CS4231_ALT_FEATURE_1] | CS4231_TIMER_ENABLE);
854         }
855         spin_unlock_irqrestore(&chip->lock, flags);
856
857         return 0;
858 }
859
860 static int snd_cs4231_timer_stop(struct snd_timer *timer)
861 {
862         unsigned long flags;
863         struct snd_cs4231 *chip = snd_timer_chip(timer);
864
865         spin_lock_irqsave(&chip->lock, flags);
866         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1,
867                        chip->image[CS4231_ALT_FEATURE_1] &= ~CS4231_TIMER_ENABLE);
868         spin_unlock_irqrestore(&chip->lock, flags);
869
870         return 0;
871 }
872
873 static void __init snd_cs4231_init(struct snd_cs4231 *chip)
874 {
875         unsigned long flags;
876
877         snd_cs4231_mce_down(chip);
878
879 #ifdef SNDRV_DEBUG_MCE
880         snd_printdd("init: (1)\n");
881 #endif
882         snd_cs4231_mce_up(chip);
883         spin_lock_irqsave(&chip->lock, flags);
884         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
885                                             CS4231_RECORD_ENABLE | CS4231_RECORD_PIO |
886                                             CS4231_CALIB_MODE);
887         chip->image[CS4231_IFACE_CTRL] |= CS4231_AUTOCALIB;
888         snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
889         spin_unlock_irqrestore(&chip->lock, flags);
890         snd_cs4231_mce_down(chip);
891
892 #ifdef SNDRV_DEBUG_MCE
893         snd_printdd("init: (2)\n");
894 #endif
895
896         snd_cs4231_mce_up(chip);
897         spin_lock_irqsave(&chip->lock, flags);
898         snd_cs4231_out(chip, CS4231_ALT_FEATURE_1, chip->image[CS4231_ALT_FEATURE_1]);
899         spin_unlock_irqrestore(&chip->lock, flags);
900         snd_cs4231_mce_down(chip);
901
902 #ifdef SNDRV_DEBUG_MCE
903         snd_printdd("init: (3) - afei = 0x%x\n", chip->image[CS4231_ALT_FEATURE_1]);
904 #endif
905
906         spin_lock_irqsave(&chip->lock, flags);
907         snd_cs4231_out(chip, CS4231_ALT_FEATURE_2, chip->image[CS4231_ALT_FEATURE_2]);
908         spin_unlock_irqrestore(&chip->lock, flags);
909
910         snd_cs4231_mce_up(chip);
911         spin_lock_irqsave(&chip->lock, flags);
912         snd_cs4231_out(chip, CS4231_PLAYBK_FORMAT, chip->image[CS4231_PLAYBK_FORMAT]);
913         spin_unlock_irqrestore(&chip->lock, flags);
914         snd_cs4231_mce_down(chip);
915
916 #ifdef SNDRV_DEBUG_MCE
917         snd_printdd("init: (4)\n");
918 #endif
919
920         snd_cs4231_mce_up(chip);
921         spin_lock_irqsave(&chip->lock, flags);
922         snd_cs4231_out(chip, CS4231_REC_FORMAT, chip->image[CS4231_REC_FORMAT]);
923         spin_unlock_irqrestore(&chip->lock, flags);
924         snd_cs4231_mce_down(chip);
925
926 #ifdef SNDRV_DEBUG_MCE
927         snd_printdd("init: (5)\n");
928 #endif
929 }
930
931 static int snd_cs4231_open(struct snd_cs4231 *chip, unsigned int mode)
932 {
933         unsigned long flags;
934
935         down(&chip->open_mutex);
936         if ((chip->mode & mode)) {
937                 up(&chip->open_mutex);
938                 return -EAGAIN;
939         }
940         if (chip->mode & CS4231_MODE_OPEN) {
941                 chip->mode |= mode;
942                 up(&chip->open_mutex);
943                 return 0;
944         }
945         /* ok. now enable and ack CODEC IRQ */
946         spin_lock_irqsave(&chip->lock, flags);
947         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
948                        CS4231_RECORD_IRQ |
949                        CS4231_TIMER_IRQ);
950         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
951         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
952         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
953
954         snd_cs4231_out(chip, CS4231_IRQ_STATUS, CS4231_PLAYBACK_IRQ |
955                        CS4231_RECORD_IRQ |
956                        CS4231_TIMER_IRQ);
957         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
958
959         spin_unlock_irqrestore(&chip->lock, flags);
960
961         chip->mode = mode;
962         up(&chip->open_mutex);
963         return 0;
964 }
965
966 static void snd_cs4231_close(struct snd_cs4231 *chip, unsigned int mode)
967 {
968         unsigned long flags;
969
970         down(&chip->open_mutex);
971         chip->mode &= ~mode;
972         if (chip->mode & CS4231_MODE_OPEN) {
973                 up(&chip->open_mutex);
974                 return;
975         }
976         snd_cs4231_calibrate_mute(chip, 1);
977
978         /* disable IRQ */
979         spin_lock_irqsave(&chip->lock, flags);
980         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
981         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
982         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
983
984         /* now disable record & playback */
985
986         if (chip->image[CS4231_IFACE_CTRL] &
987             (CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
988              CS4231_RECORD_ENABLE | CS4231_RECORD_PIO)) {
989                 spin_unlock_irqrestore(&chip->lock, flags);
990                 snd_cs4231_mce_up(chip);
991                 spin_lock_irqsave(&chip->lock, flags);
992                 chip->image[CS4231_IFACE_CTRL] &=
993                         ~(CS4231_PLAYBACK_ENABLE | CS4231_PLAYBACK_PIO |
994                           CS4231_RECORD_ENABLE | CS4231_RECORD_PIO);
995                 snd_cs4231_out(chip, CS4231_IFACE_CTRL, chip->image[CS4231_IFACE_CTRL]);
996                 spin_unlock_irqrestore(&chip->lock, flags);
997                 snd_cs4231_mce_down(chip);
998                 spin_lock_irqsave(&chip->lock, flags);
999         }
1000
1001         /* clear IRQ again */
1002         snd_cs4231_out(chip, CS4231_IRQ_STATUS, 0);
1003         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1004         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));        /* clear IRQ */
1005         spin_unlock_irqrestore(&chip->lock, flags);
1006
1007         snd_cs4231_calibrate_mute(chip, 0);
1008
1009         chip->mode = 0;
1010         up(&chip->open_mutex);
1011 }
1012
1013 /*
1014  *  timer open/close
1015  */
1016
1017 static int snd_cs4231_timer_open(struct snd_timer *timer)
1018 {
1019         struct snd_cs4231 *chip = snd_timer_chip(timer);
1020         snd_cs4231_open(chip, CS4231_MODE_TIMER);
1021         return 0;
1022 }
1023
1024 static int snd_cs4231_timer_close(struct snd_timer * timer)
1025 {
1026         struct snd_cs4231 *chip = snd_timer_chip(timer);
1027         snd_cs4231_close(chip, CS4231_MODE_TIMER);
1028         return 0;
1029 }
1030
1031 static struct snd_timer_hardware snd_cs4231_timer_table =
1032 {
1033         .flags          =       SNDRV_TIMER_HW_AUTO,
1034         .resolution     =       9945,
1035         .ticks          =       65535,
1036         .open           =       snd_cs4231_timer_open,
1037         .close          =       snd_cs4231_timer_close,
1038         .c_resolution   =       snd_cs4231_timer_resolution,
1039         .start          =       snd_cs4231_timer_start,
1040         .stop           =       snd_cs4231_timer_stop,
1041 };
1042
1043 /*
1044  *  ok.. exported functions..
1045  */
1046
1047 static int snd_cs4231_playback_hw_params(struct snd_pcm_substream *substream,
1048                                          struct snd_pcm_hw_params *hw_params)
1049 {
1050         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1051         unsigned char new_pdfr;
1052         int err;
1053
1054         if ((err = snd_pcm_lib_malloc_pages(substream,
1055                                             params_buffer_bytes(hw_params))) < 0)
1056                 return err;
1057         new_pdfr = snd_cs4231_get_format(chip, params_format(hw_params),
1058                                          params_channels(hw_params)) |
1059                 snd_cs4231_get_rate(params_rate(hw_params));
1060         snd_cs4231_playback_format(chip, hw_params, new_pdfr);
1061
1062         return 0;
1063 }
1064
1065 static int snd_cs4231_playback_hw_free(struct snd_pcm_substream *substream)
1066 {
1067         return snd_pcm_lib_free_pages(substream);
1068 }
1069
1070 static int snd_cs4231_playback_prepare(struct snd_pcm_substream *substream)
1071 {
1072         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1073         struct snd_pcm_runtime *runtime = substream->runtime;
1074         unsigned long flags;
1075
1076         spin_lock_irqsave(&chip->lock, flags);
1077
1078         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_PLAYBACK_ENABLE |
1079                                             CS4231_PLAYBACK_PIO);
1080
1081         if (runtime->period_size > 0xffff + 1)
1082                 BUG();
1083
1084         chip->p_periods_sent = 0;
1085         spin_unlock_irqrestore(&chip->lock, flags);
1086
1087         return 0;
1088 }
1089
1090 static int snd_cs4231_capture_hw_params(struct snd_pcm_substream *substream,
1091                                         struct snd_pcm_hw_params *hw_params)
1092 {
1093         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1094         unsigned char new_cdfr;
1095         int err;
1096
1097         if ((err = snd_pcm_lib_malloc_pages(substream,
1098                                             params_buffer_bytes(hw_params))) < 0)
1099                 return err;
1100         new_cdfr = snd_cs4231_get_format(chip, params_format(hw_params),
1101                                          params_channels(hw_params)) |
1102                 snd_cs4231_get_rate(params_rate(hw_params));
1103         snd_cs4231_capture_format(chip, hw_params, new_cdfr);
1104
1105         return 0;
1106 }
1107
1108 static int snd_cs4231_capture_hw_free(struct snd_pcm_substream *substream)
1109 {
1110         return snd_pcm_lib_free_pages(substream);
1111 }
1112
1113 static int snd_cs4231_capture_prepare(struct snd_pcm_substream *substream)
1114 {
1115         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1116         unsigned long flags;
1117
1118         spin_lock_irqsave(&chip->lock, flags);
1119         chip->image[CS4231_IFACE_CTRL] &= ~(CS4231_RECORD_ENABLE |
1120                                             CS4231_RECORD_PIO);
1121
1122
1123         chip->c_periods_sent = 0;
1124         spin_unlock_irqrestore(&chip->lock, flags);
1125
1126         return 0;
1127 }
1128
1129 static void snd_cs4231_overrange(struct snd_cs4231 *chip)
1130 {
1131         unsigned long flags;
1132         unsigned char res;
1133
1134         spin_lock_irqsave(&chip->lock, flags);
1135         res = snd_cs4231_in(chip, CS4231_TEST_INIT);
1136         spin_unlock_irqrestore(&chip->lock, flags);
1137
1138         if (res & (0x08 | 0x02))        /* detect overrange only above 0dB; may be user selectable? */
1139                 chip->capture_substream->runtime->overrange++;
1140 }
1141
1142 static void snd_cs4231_play_callback(struct snd_cs4231 *chip)
1143 {
1144         if (chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE) {
1145                 snd_pcm_period_elapsed(chip->playback_substream);
1146                 snd_cs4231_advance_dma(&chip->p_dma, chip->playback_substream,
1147                                             &chip->p_periods_sent);
1148         }
1149 }
1150
1151 static void snd_cs4231_capture_callback(struct snd_cs4231 *chip)
1152 {
1153         if (chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE) {
1154                 snd_pcm_period_elapsed(chip->capture_substream);
1155                 snd_cs4231_advance_dma(&chip->c_dma, chip->capture_substream,
1156                                             &chip->c_periods_sent);
1157         }
1158 }
1159
1160 static snd_pcm_uframes_t snd_cs4231_playback_pointer(struct snd_pcm_substream *substream)
1161 {
1162         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1163         struct cs4231_dma_control *dma_cont = &chip->p_dma;
1164         size_t ptr;
1165         
1166         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_PLAYBACK_ENABLE))
1167                 return 0;
1168         ptr = dma_cont->address(dma_cont);
1169         if (ptr != 0)
1170                 ptr -= substream->runtime->dma_addr;
1171         
1172         return bytes_to_frames(substream->runtime, ptr);
1173 }
1174
1175 static snd_pcm_uframes_t snd_cs4231_capture_pointer(struct snd_pcm_substream *substream)
1176 {
1177         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1178         struct cs4231_dma_control *dma_cont = &chip->c_dma;
1179         size_t ptr;
1180         
1181         if (!(chip->image[CS4231_IFACE_CTRL] & CS4231_RECORD_ENABLE))
1182                 return 0;
1183         ptr = dma_cont->address(dma_cont);
1184         if (ptr != 0)
1185                 ptr -= substream->runtime->dma_addr;
1186         
1187         return bytes_to_frames(substream->runtime, ptr);
1188 }
1189
1190 /*
1191
1192  */
1193
1194 static int __init snd_cs4231_probe(struct snd_cs4231 *chip)
1195 {
1196         unsigned long flags;
1197         int i, id, vers;
1198         unsigned char *ptr;
1199
1200         id = vers = 0;
1201         for (i = 0; i < 50; i++) {
1202                 mb();
1203                 if (__cs4231_readb(chip, CS4231P(chip, REGSEL)) & CS4231_INIT)
1204                         udelay(2000);
1205                 else {
1206                         spin_lock_irqsave(&chip->lock, flags);
1207                         snd_cs4231_out(chip, CS4231_MISC_INFO, CS4231_MODE2);
1208                         id = snd_cs4231_in(chip, CS4231_MISC_INFO) & 0x0f;
1209                         vers = snd_cs4231_in(chip, CS4231_VERSION);
1210                         spin_unlock_irqrestore(&chip->lock, flags);
1211                         if (id == 0x0a)
1212                                 break;  /* this is valid value */
1213                 }
1214         }
1215         snd_printdd("cs4231: port = %p, id = 0x%x\n", chip->port, id);
1216         if (id != 0x0a)
1217                 return -ENODEV; /* no valid device found */
1218
1219         spin_lock_irqsave(&chip->lock, flags);
1220
1221
1222         /* Reset DMA engine (sbus only).  */
1223         chip->p_dma.reset(chip);
1224
1225         __cs4231_readb(chip, CS4231P(chip, STATUS));    /* clear any pendings IRQ */
1226         __cs4231_writeb(chip, 0, CS4231P(chip, STATUS));
1227         mb();
1228
1229         spin_unlock_irqrestore(&chip->lock, flags);
1230
1231         chip->image[CS4231_MISC_INFO] = CS4231_MODE2;
1232         chip->image[CS4231_IFACE_CTRL] =
1233                 chip->image[CS4231_IFACE_CTRL] & ~CS4231_SINGLE_DMA;
1234         chip->image[CS4231_ALT_FEATURE_1] = 0x80;
1235         chip->image[CS4231_ALT_FEATURE_2] = 0x01;
1236         if (vers & 0x20)
1237                 chip->image[CS4231_ALT_FEATURE_2] |= 0x02;
1238
1239         ptr = (unsigned char *) &chip->image;
1240
1241         snd_cs4231_mce_down(chip);
1242
1243         spin_lock_irqsave(&chip->lock, flags);
1244
1245         for (i = 0; i < 32; i++)        /* ok.. fill all CS4231 registers */
1246                 snd_cs4231_out(chip, i, *ptr++);
1247
1248         spin_unlock_irqrestore(&chip->lock, flags);
1249
1250         snd_cs4231_mce_up(chip);
1251
1252         snd_cs4231_mce_down(chip);
1253
1254         mdelay(2);
1255
1256         return 0;               /* all things are ok.. */
1257 }
1258
1259 static struct snd_pcm_hardware snd_cs4231_playback =
1260 {
1261         .info                   = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1262                                  SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
1263         .formats                = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
1264                                  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1265                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1266                                  SNDRV_PCM_FMTBIT_S16_BE),
1267         .rates                  = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1268         .rate_min               = 5510,
1269         .rate_max               = 48000,
1270         .channels_min           = 1,
1271         .channels_max           = 2,
1272         .buffer_bytes_max       = (32*1024),
1273         .period_bytes_min       = 4096,
1274         .period_bytes_max       = (32*1024),
1275         .periods_min            = 1,
1276         .periods_max            = 1024,
1277 };
1278
1279 static struct snd_pcm_hardware snd_cs4231_capture =
1280 {
1281         .info                   = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
1282                                  SNDRV_PCM_INFO_MMAP_VALID | SNDRV_PCM_INFO_SYNC_START),
1283         .formats                = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
1284                                  SNDRV_PCM_FMTBIT_IMA_ADPCM |
1285                                  SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE |
1286                                  SNDRV_PCM_FMTBIT_S16_BE),
1287         .rates                  = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
1288         .rate_min               = 5510,
1289         .rate_max               = 48000,
1290         .channels_min           = 1,
1291         .channels_max           = 2,
1292         .buffer_bytes_max       = (32*1024),
1293         .period_bytes_min       = 4096,
1294         .period_bytes_max       = (32*1024),
1295         .periods_min            = 1,
1296         .periods_max            = 1024,
1297 };
1298
1299 static int snd_cs4231_playback_open(struct snd_pcm_substream *substream)
1300 {
1301         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1302         struct snd_pcm_runtime *runtime = substream->runtime;
1303         int err;
1304
1305         runtime->hw = snd_cs4231_playback;
1306
1307         if ((err = snd_cs4231_open(chip, CS4231_MODE_PLAY)) < 0) {
1308                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1309                 return err;
1310         }
1311         chip->playback_substream = substream;
1312         chip->p_periods_sent = 0;
1313         snd_pcm_set_sync(substream);
1314         snd_cs4231_xrate(runtime);
1315
1316         return 0;
1317 }
1318
1319 static int snd_cs4231_capture_open(struct snd_pcm_substream *substream)
1320 {
1321         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1322         struct snd_pcm_runtime *runtime = substream->runtime;
1323         int err;
1324
1325         runtime->hw = snd_cs4231_capture;
1326
1327         if ((err = snd_cs4231_open(chip, CS4231_MODE_RECORD)) < 0) {
1328                 snd_free_pages(runtime->dma_area, runtime->dma_bytes);
1329                 return err;
1330         }
1331         chip->capture_substream = substream;
1332         chip->c_periods_sent = 0;
1333         snd_pcm_set_sync(substream);
1334         snd_cs4231_xrate(runtime);
1335
1336         return 0;
1337 }
1338
1339 static int snd_cs4231_playback_close(struct snd_pcm_substream *substream)
1340 {
1341         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1342
1343         snd_cs4231_close(chip, CS4231_MODE_PLAY);
1344         chip->playback_substream = NULL;
1345
1346         return 0;
1347 }
1348
1349 static int snd_cs4231_capture_close(struct snd_pcm_substream *substream)
1350 {
1351         struct snd_cs4231 *chip = snd_pcm_substream_chip(substream);
1352
1353         snd_cs4231_close(chip, CS4231_MODE_RECORD);
1354         chip->capture_substream = NULL;
1355
1356         return 0;
1357 }
1358
1359 /* XXX We can do some power-management, in particular on EBUS using
1360  * XXX the audio AUXIO register...
1361  */
1362
1363 static struct snd_pcm_ops snd_cs4231_playback_ops = {
1364         .open           =       snd_cs4231_playback_open,
1365         .close          =       snd_cs4231_playback_close,
1366         .ioctl          =       snd_pcm_lib_ioctl,
1367         .hw_params      =       snd_cs4231_playback_hw_params,
1368         .hw_free        =       snd_cs4231_playback_hw_free,
1369         .prepare        =       snd_cs4231_playback_prepare,
1370         .trigger        =       snd_cs4231_trigger,
1371         .pointer        =       snd_cs4231_playback_pointer,
1372 };
1373
1374 static struct snd_pcm_ops snd_cs4231_capture_ops = {
1375         .open           =       snd_cs4231_capture_open,
1376         .close          =       snd_cs4231_capture_close,
1377         .ioctl          =       snd_pcm_lib_ioctl,
1378         .hw_params      =       snd_cs4231_capture_hw_params,
1379         .hw_free        =       snd_cs4231_capture_hw_free,
1380         .prepare        =       snd_cs4231_capture_prepare,
1381         .trigger        =       snd_cs4231_trigger,
1382         .pointer        =       snd_cs4231_capture_pointer,
1383 };
1384
1385 static int __init snd_cs4231_pcm(struct snd_cs4231 *chip)
1386 {
1387         struct snd_pcm *pcm;
1388         int err;
1389
1390         if ((err = snd_pcm_new(chip->card, "CS4231", 0, 1, 1, &pcm)) < 0)
1391                 return err;
1392
1393         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_cs4231_playback_ops);
1394         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_cs4231_capture_ops);
1395         
1396         /* global setup */
1397         pcm->private_data = chip;
1398         pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
1399         strcpy(pcm->name, "CS4231");
1400
1401         chip->p_dma.preallocate(chip, pcm);
1402
1403         chip->pcm = pcm;
1404
1405         return 0;
1406 }
1407
1408 static int __init snd_cs4231_timer(struct snd_cs4231 *chip)
1409 {
1410         struct snd_timer *timer;
1411         struct snd_timer_id tid;
1412         int err;
1413
1414         /* Timer initialization */
1415         tid.dev_class = SNDRV_TIMER_CLASS_CARD;
1416         tid.dev_sclass = SNDRV_TIMER_SCLASS_NONE;
1417         tid.card = chip->card->number;
1418         tid.device = 0;
1419         tid.subdevice = 0;
1420         if ((err = snd_timer_new(chip->card, "CS4231", &tid, &timer)) < 0)
1421                 return err;
1422         strcpy(timer->name, "CS4231");
1423         timer->private_data = chip;
1424         timer->hw = snd_cs4231_timer_table;
1425         chip->timer = timer;
1426
1427         return 0;
1428 }
1429         
1430 /*
1431  *  MIXER part
1432  */
1433
1434 static int snd_cs4231_info_mux(struct snd_kcontrol *kcontrol,
1435                                struct snd_ctl_elem_info *uinfo)
1436 {
1437         static char *texts[4] = {
1438                 "Line", "CD", "Mic", "Mix"
1439         };
1440         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1441
1442         snd_assert(chip->card != NULL, return -EINVAL);
1443         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1444         uinfo->count = 2;
1445         uinfo->value.enumerated.items = 4;
1446         if (uinfo->value.enumerated.item > 3)
1447                 uinfo->value.enumerated.item = 3;
1448         strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1449
1450         return 0;
1451 }
1452
1453 static int snd_cs4231_get_mux(struct snd_kcontrol *kcontrol,
1454                               struct snd_ctl_elem_value *ucontrol)
1455 {
1456         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1457         unsigned long flags;
1458         
1459         spin_lock_irqsave(&chip->lock, flags);
1460         ucontrol->value.enumerated.item[0] =
1461                 (chip->image[CS4231_LEFT_INPUT] & CS4231_MIXS_ALL) >> 6;
1462         ucontrol->value.enumerated.item[1] =
1463                 (chip->image[CS4231_RIGHT_INPUT] & CS4231_MIXS_ALL) >> 6;
1464         spin_unlock_irqrestore(&chip->lock, flags);
1465
1466         return 0;
1467 }
1468
1469 static int snd_cs4231_put_mux(struct snd_kcontrol *kcontrol,
1470                               struct snd_ctl_elem_value *ucontrol)
1471 {
1472         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1473         unsigned long flags;
1474         unsigned short left, right;
1475         int change;
1476         
1477         if (ucontrol->value.enumerated.item[0] > 3 ||
1478             ucontrol->value.enumerated.item[1] > 3)
1479                 return -EINVAL;
1480         left = ucontrol->value.enumerated.item[0] << 6;
1481         right = ucontrol->value.enumerated.item[1] << 6;
1482
1483         spin_lock_irqsave(&chip->lock, flags);
1484
1485         left = (chip->image[CS4231_LEFT_INPUT] & ~CS4231_MIXS_ALL) | left;
1486         right = (chip->image[CS4231_RIGHT_INPUT] & ~CS4231_MIXS_ALL) | right;
1487         change = left != chip->image[CS4231_LEFT_INPUT] ||
1488                  right != chip->image[CS4231_RIGHT_INPUT];
1489         snd_cs4231_out(chip, CS4231_LEFT_INPUT, left);
1490         snd_cs4231_out(chip, CS4231_RIGHT_INPUT, right);
1491
1492         spin_unlock_irqrestore(&chip->lock, flags);
1493
1494         return change;
1495 }
1496
1497 static int snd_cs4231_info_single(struct snd_kcontrol *kcontrol,
1498                                   struct snd_ctl_elem_info *uinfo)
1499 {
1500         int mask = (kcontrol->private_value >> 16) & 0xff;
1501
1502         uinfo->type = (mask == 1) ?
1503                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1504         uinfo->count = 1;
1505         uinfo->value.integer.min = 0;
1506         uinfo->value.integer.max = mask;
1507
1508         return 0;
1509 }
1510
1511 static int snd_cs4231_get_single(struct snd_kcontrol *kcontrol,
1512                                  struct snd_ctl_elem_value *ucontrol)
1513 {
1514         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1515         unsigned long flags;
1516         int reg = kcontrol->private_value & 0xff;
1517         int shift = (kcontrol->private_value >> 8) & 0xff;
1518         int mask = (kcontrol->private_value >> 16) & 0xff;
1519         int invert = (kcontrol->private_value >> 24) & 0xff;
1520         
1521         spin_lock_irqsave(&chip->lock, flags);
1522
1523         ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
1524
1525         spin_unlock_irqrestore(&chip->lock, flags);
1526
1527         if (invert)
1528                 ucontrol->value.integer.value[0] =
1529                         (mask - ucontrol->value.integer.value[0]);
1530
1531         return 0;
1532 }
1533
1534 static int snd_cs4231_put_single(struct snd_kcontrol *kcontrol,
1535                                  struct snd_ctl_elem_value *ucontrol)
1536 {
1537         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1538         unsigned long flags;
1539         int reg = kcontrol->private_value & 0xff;
1540         int shift = (kcontrol->private_value >> 8) & 0xff;
1541         int mask = (kcontrol->private_value >> 16) & 0xff;
1542         int invert = (kcontrol->private_value >> 24) & 0xff;
1543         int change;
1544         unsigned short val;
1545         
1546         val = (ucontrol->value.integer.value[0] & mask);
1547         if (invert)
1548                 val = mask - val;
1549         val <<= shift;
1550
1551         spin_lock_irqsave(&chip->lock, flags);
1552
1553         val = (chip->image[reg] & ~(mask << shift)) | val;
1554         change = val != chip->image[reg];
1555         snd_cs4231_out(chip, reg, val);
1556
1557         spin_unlock_irqrestore(&chip->lock, flags);
1558
1559         return change;
1560 }
1561
1562 static int snd_cs4231_info_double(struct snd_kcontrol *kcontrol,
1563                                   struct snd_ctl_elem_info *uinfo)
1564 {
1565         int mask = (kcontrol->private_value >> 24) & 0xff;
1566
1567         uinfo->type = mask == 1 ?
1568                 SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
1569         uinfo->count = 2;
1570         uinfo->value.integer.min = 0;
1571         uinfo->value.integer.max = mask;
1572
1573         return 0;
1574 }
1575
1576 static int snd_cs4231_get_double(struct snd_kcontrol *kcontrol,
1577                                  struct snd_ctl_elem_value *ucontrol)
1578 {
1579         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1580         unsigned long flags;
1581         int left_reg = kcontrol->private_value & 0xff;
1582         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1583         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1584         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1585         int mask = (kcontrol->private_value >> 24) & 0xff;
1586         int invert = (kcontrol->private_value >> 22) & 1;
1587         
1588         spin_lock_irqsave(&chip->lock, flags);
1589
1590         ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
1591         ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
1592
1593         spin_unlock_irqrestore(&chip->lock, flags);
1594
1595         if (invert) {
1596                 ucontrol->value.integer.value[0] =
1597                         (mask - ucontrol->value.integer.value[0]);
1598                 ucontrol->value.integer.value[1] =
1599                         (mask - ucontrol->value.integer.value[1]);
1600         }
1601
1602         return 0;
1603 }
1604
1605 static int snd_cs4231_put_double(struct snd_kcontrol *kcontrol,
1606                                  struct snd_ctl_elem_value *ucontrol)
1607 {
1608         struct snd_cs4231 *chip = snd_kcontrol_chip(kcontrol);
1609         unsigned long flags;
1610         int left_reg = kcontrol->private_value & 0xff;
1611         int right_reg = (kcontrol->private_value >> 8) & 0xff;
1612         int shift_left = (kcontrol->private_value >> 16) & 0x07;
1613         int shift_right = (kcontrol->private_value >> 19) & 0x07;
1614         int mask = (kcontrol->private_value >> 24) & 0xff;
1615         int invert = (kcontrol->private_value >> 22) & 1;
1616         int change;
1617         unsigned short val1, val2;
1618         
1619         val1 = ucontrol->value.integer.value[0] & mask;
1620         val2 = ucontrol->value.integer.value[1] & mask;
1621         if (invert) {
1622                 val1 = mask - val1;
1623                 val2 = mask - val2;
1624         }
1625         val1 <<= shift_left;
1626         val2 <<= shift_right;
1627
1628         spin_lock_irqsave(&chip->lock, flags);
1629
1630         val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
1631         val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
1632         change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
1633         snd_cs4231_out(chip, left_reg, val1);
1634         snd_cs4231_out(chip, right_reg, val2);
1635
1636         spin_unlock_irqrestore(&chip->lock, flags);
1637
1638         return change;
1639 }
1640
1641 #define CS4231_SINGLE(xname, xindex, reg, shift, mask, invert) \
1642 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1643   .info = snd_cs4231_info_single, \
1644   .get = snd_cs4231_get_single, .put = snd_cs4231_put_single, \
1645   .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
1646
1647 #define CS4231_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
1648 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1649   .info = snd_cs4231_info_double, \
1650   .get = snd_cs4231_get_double, .put = snd_cs4231_put_double, \
1651   .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
1652
1653 static struct snd_kcontrol_new snd_cs4231_controls[] __initdata = {
1654 CS4231_DOUBLE("PCM Playback Switch", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 7, 7, 1, 1),
1655 CS4231_DOUBLE("PCM Playback Volume", 0, CS4231_LEFT_OUTPUT, CS4231_RIGHT_OUTPUT, 0, 0, 63, 1),
1656 CS4231_DOUBLE("Line Playback Switch", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 7, 7, 1, 1),
1657 CS4231_DOUBLE("Line Playback Volume", 0, CS4231_LEFT_LINE_IN, CS4231_RIGHT_LINE_IN, 0, 0, 31, 1),
1658 CS4231_DOUBLE("Aux Playback Switch", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
1659 CS4231_DOUBLE("Aux Playback Volume", 0, CS4231_AUX1_LEFT_INPUT, CS4231_AUX1_RIGHT_INPUT, 0, 0, 31, 1),
1660 CS4231_DOUBLE("Aux Playback Switch", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
1661 CS4231_DOUBLE("Aux Playback Volume", 1, CS4231_AUX2_LEFT_INPUT, CS4231_AUX2_RIGHT_INPUT, 0, 0, 31, 1),
1662 CS4231_SINGLE("Mono Playback Switch", 0, CS4231_MONO_CTRL, 7, 1, 1),
1663 CS4231_SINGLE("Mono Playback Volume", 0, CS4231_MONO_CTRL, 0, 15, 1),
1664 CS4231_SINGLE("Mono Output Playback Switch", 0, CS4231_MONO_CTRL, 6, 1, 1),
1665 CS4231_SINGLE("Mono Output Playback Bypass", 0, CS4231_MONO_CTRL, 5, 1, 0),
1666 CS4231_DOUBLE("Capture Volume", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 0, 0, 15, 0),
1667 {
1668         .iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
1669         .name   = "Capture Source",
1670         .info   = snd_cs4231_info_mux,
1671         .get    = snd_cs4231_get_mux,
1672         .put    = snd_cs4231_put_mux,
1673 },
1674 CS4231_DOUBLE("Mic Boost", 0, CS4231_LEFT_INPUT, CS4231_RIGHT_INPUT, 5, 5, 1, 0),
1675 CS4231_SINGLE("Loopback Capture Switch", 0, CS4231_LOOPBACK, 0, 1, 0),
1676 CS4231_SINGLE("Loopback Capture Volume", 0, CS4231_LOOPBACK, 2, 63, 1),
1677 /* SPARC specific uses of XCTL{0,1} general purpose outputs.  */
1678 CS4231_SINGLE("Line Out Switch", 0, CS4231_PIN_CTRL, 6, 1, 1),
1679 CS4231_SINGLE("Headphone Out Switch", 0, CS4231_PIN_CTRL, 7, 1, 1)
1680 };
1681                                         
1682 static int __init snd_cs4231_mixer(struct snd_cs4231 *chip)
1683 {
1684         struct snd_card *card;
1685         int err, idx;
1686
1687         snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
1688
1689         card = chip->card;
1690
1691         strcpy(card->mixername, chip->pcm->name);
1692
1693         for (idx = 0; idx < ARRAY_SIZE(snd_cs4231_controls); idx++) {
1694                 if ((err = snd_ctl_add(card,
1695                                        snd_ctl_new1(&snd_cs4231_controls[idx],
1696                                                     chip))) < 0)
1697                         return err;
1698         }
1699         return 0;
1700 }
1701
1702 static int dev;
1703
1704 static int __init cs4231_attach_begin(struct snd_card **rcard)
1705 {
1706         struct snd_card *card;
1707
1708         *rcard = NULL;
1709
1710         if (dev >= SNDRV_CARDS)
1711                 return -ENODEV;
1712
1713         if (!enable[dev]) {
1714                 dev++;
1715                 return -ENOENT;
1716         }
1717
1718         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
1719         if (card == NULL)
1720                 return -ENOMEM;
1721
1722         strcpy(card->driver, "CS4231");
1723         strcpy(card->shortname, "Sun CS4231");
1724
1725         *rcard = card;
1726         return 0;
1727 }
1728
1729 static int __init cs4231_attach_finish(struct snd_card *card, struct snd_cs4231 *chip)
1730 {
1731         int err;
1732
1733         if ((err = snd_cs4231_pcm(chip)) < 0)
1734                 goto out_err;
1735
1736         if ((err = snd_cs4231_mixer(chip)) < 0)
1737                 goto out_err;
1738
1739         if ((err = snd_cs4231_timer(chip)) < 0)
1740                 goto out_err;
1741
1742         if ((err = snd_card_register(card)) < 0)
1743                 goto out_err;
1744
1745         chip->next = cs4231_list;
1746         cs4231_list = chip;
1747
1748         dev++;
1749         return 0;
1750
1751 out_err:
1752         snd_card_free(card);
1753         return err;
1754 }
1755
1756 #ifdef SBUS_SUPPORT
1757
1758 static irqreturn_t snd_cs4231_sbus_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1759 {
1760         unsigned long flags;
1761         unsigned char status;
1762         u32 csr;
1763         struct snd_cs4231 *chip = dev_id;
1764
1765         /*This is IRQ is not raised by the cs4231*/
1766         if (!(__cs4231_readb(chip, CS4231P(chip, STATUS)) & CS4231_GLOBALIRQ))
1767                 return IRQ_NONE;
1768
1769         /* ACK the APC interrupt. */
1770         csr = sbus_readl(chip->port + APCCSR);
1771
1772         sbus_writel(csr, chip->port + APCCSR);
1773
1774         if ((csr & APC_PDMA_READY) && 
1775             (csr & APC_PLAY_INT) &&
1776             (csr & APC_XINT_PNVA) &&
1777             !(csr & APC_XINT_EMPT))
1778                         snd_cs4231_play_callback(chip);
1779
1780         if ((csr & APC_CDMA_READY) && 
1781             (csr & APC_CAPT_INT) &&
1782             (csr & APC_XINT_CNVA) &&
1783             !(csr & APC_XINT_EMPT))
1784                         snd_cs4231_capture_callback(chip);
1785         
1786         status = snd_cs4231_in(chip, CS4231_IRQ_STATUS);
1787
1788         if (status & CS4231_TIMER_IRQ) {
1789                 if (chip->timer)
1790                         snd_timer_interrupt(chip->timer, chip->timer->sticks);
1791         }               
1792
1793         if ((status & CS4231_RECORD_IRQ) && (csr & APC_CDMA_READY))
1794                 snd_cs4231_overrange(chip);
1795
1796         /* ACK the CS4231 interrupt. */
1797         spin_lock_irqsave(&chip->lock, flags);
1798         snd_cs4231_outm(chip, CS4231_IRQ_STATUS, ~CS4231_ALL_IRQS | ~status, 0);
1799         spin_unlock_irqrestore(&chip->lock, flags);
1800
1801         return 0;
1802 }
1803
1804 /*
1805  * SBUS DMA routines
1806  */
1807
1808 static int sbus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
1809 {
1810         unsigned long flags;
1811         u32 test, csr;
1812         int err;
1813         struct sbus_dma_info *base = &dma_cont->sbus_info;
1814         
1815         if (len >= (1 << 24))
1816                 return -EINVAL;
1817         spin_lock_irqsave(&base->lock, flags);
1818         csr = sbus_readl(base->regs + APCCSR);
1819         err = -EINVAL;
1820         test = APC_CDMA_READY;
1821         if ( base->dir == APC_PLAY )
1822                 test = APC_PDMA_READY;
1823         if (!(csr & test))
1824                 goto out;
1825         err = -EBUSY;
1826         csr = sbus_readl(base->regs + APCCSR);
1827         test = APC_XINT_CNVA;
1828         if ( base->dir == APC_PLAY )
1829                 test = APC_XINT_PNVA;
1830         if (!(csr & test))
1831                 goto out;
1832         err = 0;
1833         sbus_writel(bus_addr, base->regs + base->dir + APCNVA);
1834         sbus_writel(len, base->regs + base->dir + APCNC);
1835 out:
1836         spin_unlock_irqrestore(&base->lock, flags);
1837         return err;
1838 }
1839
1840 static void sbus_dma_prepare(struct cs4231_dma_control *dma_cont, int d)
1841 {
1842         unsigned long flags;
1843         u32 csr, test;
1844         struct sbus_dma_info *base = &dma_cont->sbus_info;
1845
1846         spin_lock_irqsave(&base->lock, flags);
1847         csr = sbus_readl(base->regs + APCCSR);
1848         test =  APC_GENL_INT | APC_PLAY_INT | APC_XINT_ENA |
1849                 APC_XINT_PLAY | APC_XINT_PEMP | APC_XINT_GENL |
1850                  APC_XINT_PENA;
1851         if ( base->dir == APC_RECORD )
1852                 test = APC_GENL_INT | APC_CAPT_INT | APC_XINT_ENA |
1853                         APC_XINT_CAPT | APC_XINT_CEMP | APC_XINT_GENL;
1854         csr |= test;
1855         sbus_writel(csr, base->regs + APCCSR);
1856         spin_unlock_irqrestore(&base->lock, flags);
1857 }
1858
1859 static void sbus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
1860 {
1861         unsigned long flags;
1862         u32 csr, shift;
1863         struct sbus_dma_info *base = &dma_cont->sbus_info;
1864
1865         spin_lock_irqsave(&base->lock, flags);
1866         if (!on) {
1867                 if (base->dir == APC_PLAY) { 
1868                         sbus_writel(0, base->regs + base->dir + APCNVA); 
1869                         sbus_writel(1, base->regs + base->dir + APCC); 
1870                 }
1871                 else
1872                 {
1873                         sbus_writel(0, base->regs + base->dir + APCNC); 
1874                         sbus_writel(0, base->regs + base->dir + APCVA); 
1875                 } 
1876         } 
1877         udelay(600); 
1878         csr = sbus_readl(base->regs + APCCSR);
1879         shift = 0;
1880         if ( base->dir == APC_PLAY )
1881                 shift = 1;
1882         if (on)
1883                 csr &= ~(APC_CPAUSE << shift);
1884         else
1885                 csr |= (APC_CPAUSE << shift); 
1886         sbus_writel(csr, base->regs + APCCSR);
1887         if (on)
1888                 csr |= (APC_CDMA_READY << shift);
1889         else
1890                 csr &= ~(APC_CDMA_READY << shift);
1891         sbus_writel(csr, base->regs + APCCSR);
1892         
1893         spin_unlock_irqrestore(&base->lock, flags);
1894 }
1895
1896 static unsigned int sbus_dma_addr(struct cs4231_dma_control *dma_cont)
1897 {
1898         struct sbus_dma_info *base = &dma_cont->sbus_info;
1899
1900         return sbus_readl(base->regs + base->dir + APCVA);
1901 }
1902
1903 static void sbus_dma_reset(struct snd_cs4231 *chip)
1904 {
1905         sbus_writel(APC_CHIP_RESET, chip->port + APCCSR);
1906         sbus_writel(0x00, chip->port + APCCSR);
1907         sbus_writel(sbus_readl(chip->port + APCCSR) | APC_CDC_RESET,
1908                     chip->port + APCCSR);
1909   
1910         udelay(20);
1911   
1912         sbus_writel(sbus_readl(chip->port + APCCSR) & ~APC_CDC_RESET,
1913                     chip->port + APCCSR);
1914         sbus_writel(sbus_readl(chip->port + APCCSR) | (APC_XINT_ENA |
1915                        APC_XINT_PENA |
1916                        APC_XINT_CENA),
1917                        chip->port + APCCSR);
1918 }
1919
1920 static void sbus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
1921 {
1922         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_SBUS,
1923                                               snd_dma_sbus_data(chip->dev_u.sdev),
1924                                               64*1024, 128*1024);
1925 }
1926
1927 /*
1928  * Init and exit routines
1929  */
1930
1931 static int snd_cs4231_sbus_free(struct snd_cs4231 *chip)
1932 {
1933         if (chip->irq[0])
1934                 free_irq(chip->irq[0], chip);
1935
1936         if (chip->port)
1937                 sbus_iounmap(chip->port, chip->regs_size);
1938
1939         kfree(chip);
1940
1941         return 0;
1942 }
1943
1944 static int snd_cs4231_sbus_dev_free(struct snd_device *device)
1945 {
1946         struct snd_cs4231 *cp = device->device_data;
1947
1948         return snd_cs4231_sbus_free(cp);
1949 }
1950
1951 static struct snd_device_ops snd_cs4231_sbus_dev_ops = {
1952         .dev_free       =       snd_cs4231_sbus_dev_free,
1953 };
1954
1955 static int __init snd_cs4231_sbus_create(struct snd_card *card,
1956                                          struct sbus_dev *sdev,
1957                                          int dev,
1958                                          struct snd_cs4231 **rchip)
1959 {
1960         struct snd_cs4231 *chip;
1961         int err;
1962
1963         *rchip = NULL;
1964         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
1965         if (chip == NULL)
1966                 return -ENOMEM;
1967
1968         spin_lock_init(&chip->lock);
1969         spin_lock_init(&chip->c_dma.sbus_info.lock);
1970         spin_lock_init(&chip->p_dma.sbus_info.lock);
1971         init_MUTEX(&chip->mce_mutex);
1972         init_MUTEX(&chip->open_mutex);
1973         chip->card = card;
1974         chip->dev_u.sdev = sdev;
1975         chip->regs_size = sdev->reg_addrs[0].reg_size;
1976         memcpy(&chip->image, &snd_cs4231_original_image,
1977                sizeof(snd_cs4231_original_image));
1978
1979         chip->port = sbus_ioremap(&sdev->resource[0], 0,
1980                                   chip->regs_size, "cs4231");
1981         if (!chip->port) {
1982                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
1983                 return -EIO;
1984         }
1985
1986         chip->c_dma.sbus_info.regs = chip->port;
1987         chip->p_dma.sbus_info.regs = chip->port;
1988         chip->c_dma.sbus_info.dir = APC_RECORD;
1989         chip->p_dma.sbus_info.dir = APC_PLAY;
1990
1991         chip->p_dma.prepare = sbus_dma_prepare;
1992         chip->p_dma.enable = sbus_dma_enable;
1993         chip->p_dma.request = sbus_dma_request;
1994         chip->p_dma.address = sbus_dma_addr;
1995         chip->p_dma.reset = sbus_dma_reset;
1996         chip->p_dma.preallocate = sbus_dma_preallocate;
1997
1998         chip->c_dma.prepare = sbus_dma_prepare;
1999         chip->c_dma.enable = sbus_dma_enable;
2000         chip->c_dma.request = sbus_dma_request;
2001         chip->c_dma.address = sbus_dma_addr;
2002         chip->c_dma.reset = sbus_dma_reset;
2003         chip->c_dma.preallocate = sbus_dma_preallocate;
2004
2005         if (request_irq(sdev->irqs[0], snd_cs4231_sbus_interrupt,
2006                         SA_SHIRQ, "cs4231", chip)) {
2007                 snd_printdd("cs4231-%d: Unable to grab SBUS IRQ %s\n",
2008                            dev,
2009                            __irq_itoa(sdev->irqs[0]));
2010                 snd_cs4231_sbus_free(chip);
2011                 return -EBUSY;
2012         }
2013         chip->irq[0] = sdev->irqs[0];
2014
2015         if (snd_cs4231_probe(chip) < 0) {
2016                 snd_cs4231_sbus_free(chip);
2017                 return -ENODEV;
2018         }
2019         snd_cs4231_init(chip);
2020
2021         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2022                                   chip, &snd_cs4231_sbus_dev_ops)) < 0) {
2023                 snd_cs4231_sbus_free(chip);
2024                 return err;
2025         }
2026
2027         *rchip = chip;
2028         return 0;
2029 }
2030
2031 static int __init cs4231_sbus_attach(struct sbus_dev *sdev)
2032 {
2033         struct resource *rp = &sdev->resource[0];
2034         struct snd_cs4231 *cp;
2035         struct snd_card *card;
2036         int err;
2037
2038         err = cs4231_attach_begin(&card);
2039         if (err)
2040                 return err;
2041
2042         sprintf(card->longname, "%s at 0x%02lx:0x%08lx, irq %s",
2043                 card->shortname,
2044                 rp->flags & 0xffL,
2045                 rp->start,
2046                 __irq_itoa(sdev->irqs[0]));
2047
2048         if ((err = snd_cs4231_sbus_create(card, sdev, dev, &cp)) < 0) {
2049                 snd_card_free(card);
2050                 return err;
2051         }
2052
2053         return cs4231_attach_finish(card, cp);
2054 }
2055 #endif
2056
2057 #ifdef EBUS_SUPPORT
2058
2059 static void snd_cs4231_ebus_play_callback(struct ebus_dma_info *p, int event, void *cookie)
2060 {
2061         struct snd_cs4231 *chip = cookie;
2062         
2063         snd_cs4231_play_callback(chip);
2064 }
2065
2066 static void snd_cs4231_ebus_capture_callback(struct ebus_dma_info *p, int event, void *cookie)
2067 {
2068         struct snd_cs4231 *chip = cookie;
2069
2070         snd_cs4231_capture_callback(chip);
2071 }
2072
2073 /*
2074  * EBUS DMA wrappers
2075  */
2076
2077 static int _ebus_dma_request(struct cs4231_dma_control *dma_cont, dma_addr_t bus_addr, size_t len)
2078 {
2079         return ebus_dma_request(&dma_cont->ebus_info, bus_addr, len);
2080 }
2081
2082 static void _ebus_dma_enable(struct cs4231_dma_control *dma_cont, int on)
2083 {
2084         ebus_dma_enable(&dma_cont->ebus_info, on);
2085 }
2086
2087 static void _ebus_dma_prepare(struct cs4231_dma_control *dma_cont, int dir)
2088 {
2089         ebus_dma_prepare(&dma_cont->ebus_info, dir);
2090 }
2091
2092 static unsigned int _ebus_dma_addr(struct cs4231_dma_control *dma_cont)
2093 {
2094         return ebus_dma_addr(&dma_cont->ebus_info);
2095 }
2096
2097 static void _ebus_dma_reset(struct snd_cs4231 *chip)
2098 {
2099         return;
2100 }
2101
2102 static void _ebus_dma_preallocate(struct snd_cs4231 *chip, struct snd_pcm *pcm)
2103 {
2104         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
2105                                       snd_dma_pci_data(chip->dev_u.pdev),
2106                                       64*1024, 128*1024);
2107 }
2108
2109 /*
2110  * Init and exit routines
2111  */
2112
2113 static int snd_cs4231_ebus_free(struct snd_cs4231 *chip)
2114 {
2115         if (chip->c_dma.ebus_info.regs) {
2116                 ebus_dma_unregister(&chip->c_dma.ebus_info);
2117                 iounmap(chip->c_dma.ebus_info.regs);
2118         }
2119         if (chip->p_dma.ebus_info.regs) {
2120                 ebus_dma_unregister(&chip->p_dma.ebus_info);
2121                 iounmap(chip->p_dma.ebus_info.regs);
2122         }
2123
2124         if (chip->port)
2125                 iounmap(chip->port);
2126
2127         kfree(chip);
2128
2129         return 0;
2130 }
2131
2132 static int snd_cs4231_ebus_dev_free(struct snd_device *device)
2133 {
2134         struct snd_cs4231 *cp = device->device_data;
2135
2136         return snd_cs4231_ebus_free(cp);
2137 }
2138
2139 static struct snd_device_ops snd_cs4231_ebus_dev_ops = {
2140         .dev_free       =       snd_cs4231_ebus_dev_free,
2141 };
2142
2143 static int __init snd_cs4231_ebus_create(struct snd_card *card,
2144                                          struct linux_ebus_device *edev,
2145                                          int dev,
2146                                          struct snd_cs4231 **rchip)
2147 {
2148         struct snd_cs4231 *chip;
2149         int err;
2150
2151         *rchip = NULL;
2152         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
2153         if (chip == NULL)
2154                 return -ENOMEM;
2155
2156         spin_lock_init(&chip->lock);
2157         spin_lock_init(&chip->c_dma.ebus_info.lock);
2158         spin_lock_init(&chip->p_dma.ebus_info.lock);
2159         init_MUTEX(&chip->mce_mutex);
2160         init_MUTEX(&chip->open_mutex);
2161         chip->flags |= CS4231_FLAG_EBUS;
2162         chip->card = card;
2163         chip->dev_u.pdev = edev->bus->self;
2164         memcpy(&chip->image, &snd_cs4231_original_image,
2165                sizeof(snd_cs4231_original_image));
2166         strcpy(chip->c_dma.ebus_info.name, "cs4231(capture)");
2167         chip->c_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2168         chip->c_dma.ebus_info.callback = snd_cs4231_ebus_capture_callback;
2169         chip->c_dma.ebus_info.client_cookie = chip;
2170         chip->c_dma.ebus_info.irq = edev->irqs[0];
2171         strcpy(chip->p_dma.ebus_info.name, "cs4231(play)");
2172         chip->p_dma.ebus_info.flags = EBUS_DMA_FLAG_USE_EBDMA_HANDLER;
2173         chip->p_dma.ebus_info.callback = snd_cs4231_ebus_play_callback;
2174         chip->p_dma.ebus_info.client_cookie = chip;
2175         chip->p_dma.ebus_info.irq = edev->irqs[1];
2176
2177         chip->p_dma.prepare = _ebus_dma_prepare;
2178         chip->p_dma.enable = _ebus_dma_enable;
2179         chip->p_dma.request = _ebus_dma_request;
2180         chip->p_dma.address = _ebus_dma_addr;
2181         chip->p_dma.reset = _ebus_dma_reset;
2182         chip->p_dma.preallocate = _ebus_dma_preallocate;
2183
2184         chip->c_dma.prepare = _ebus_dma_prepare;
2185         chip->c_dma.enable = _ebus_dma_enable;
2186         chip->c_dma.request = _ebus_dma_request;
2187         chip->c_dma.address = _ebus_dma_addr;
2188         chip->c_dma.reset = _ebus_dma_reset;
2189         chip->c_dma.preallocate = _ebus_dma_preallocate;
2190
2191         chip->port = ioremap(edev->resource[0].start, 0x10);
2192         chip->p_dma.ebus_info.regs = ioremap(edev->resource[1].start, 0x10);
2193         chip->c_dma.ebus_info.regs = ioremap(edev->resource[2].start, 0x10);
2194         if (!chip->port || !chip->p_dma.ebus_info.regs || !chip->c_dma.ebus_info.regs) {
2195                 snd_cs4231_ebus_free(chip);
2196                 snd_printdd("cs4231-%d: Unable to map chip registers.\n", dev);
2197                 return -EIO;
2198         }
2199
2200         if (ebus_dma_register(&chip->c_dma.ebus_info)) {
2201                 snd_cs4231_ebus_free(chip);
2202                 snd_printdd("cs4231-%d: Unable to register EBUS capture DMA\n", dev);
2203                 return -EBUSY;
2204         }
2205         if (ebus_dma_irq_enable(&chip->c_dma.ebus_info, 1)) {
2206                 snd_cs4231_ebus_free(chip);
2207                 snd_printdd("cs4231-%d: Unable to enable EBUS capture IRQ\n", dev);
2208                 return -EBUSY;
2209         }
2210
2211         if (ebus_dma_register(&chip->p_dma.ebus_info)) {
2212                 snd_cs4231_ebus_free(chip);
2213                 snd_printdd("cs4231-%d: Unable to register EBUS play DMA\n", dev);
2214                 return -EBUSY;
2215         }
2216         if (ebus_dma_irq_enable(&chip->p_dma.ebus_info, 1)) {
2217                 snd_cs4231_ebus_free(chip);
2218                 snd_printdd("cs4231-%d: Unable to enable EBUS play IRQ\n", dev);
2219                 return -EBUSY;
2220         }
2221
2222         if (snd_cs4231_probe(chip) < 0) {
2223                 snd_cs4231_ebus_free(chip);
2224                 return -ENODEV;
2225         }
2226         snd_cs4231_init(chip);
2227
2228         if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL,
2229                                   chip, &snd_cs4231_ebus_dev_ops)) < 0) {
2230                 snd_cs4231_ebus_free(chip);
2231                 return err;
2232         }
2233
2234         *rchip = chip;
2235         return 0;
2236 }
2237
2238 static int __init cs4231_ebus_attach(struct linux_ebus_device *edev)
2239 {
2240         struct snd_card *card;
2241         struct snd_cs4231 *chip;
2242         int err;
2243
2244         err = cs4231_attach_begin(&card);
2245         if (err)
2246                 return err;
2247
2248         sprintf(card->longname, "%s at 0x%lx, irq %s",
2249                 card->shortname,
2250                 edev->resource[0].start,
2251                 __irq_itoa(edev->irqs[0]));
2252
2253         if ((err = snd_cs4231_ebus_create(card, edev, dev, &chip)) < 0) {
2254                 snd_card_free(card);
2255                 return err;
2256         }
2257
2258         return cs4231_attach_finish(card, chip);
2259 }
2260 #endif
2261
2262 static int __init cs4231_init(void)
2263 {
2264 #ifdef SBUS_SUPPORT
2265         struct sbus_bus *sbus;
2266         struct sbus_dev *sdev;
2267 #endif
2268 #ifdef EBUS_SUPPORT
2269         struct linux_ebus *ebus;
2270         struct linux_ebus_device *edev;
2271 #endif
2272         int found;
2273
2274         found = 0;
2275
2276 #ifdef SBUS_SUPPORT
2277         for_all_sbusdev(sdev, sbus) {
2278                 if (!strcmp(sdev->prom_name, "SUNW,CS4231")) {
2279                         if (cs4231_sbus_attach(sdev) == 0)
2280                                 found++;
2281                 }
2282         }
2283 #endif
2284 #ifdef EBUS_SUPPORT
2285         for_each_ebus(ebus) {
2286                 for_each_ebusdev(edev, ebus) {
2287                         int match = 0;
2288
2289                         if (!strcmp(edev->prom_name, "SUNW,CS4231")) {
2290                                 match = 1;
2291                         } else if (!strcmp(edev->prom_name, "audio")) {
2292                                 char compat[16];
2293
2294                                 prom_getstring(edev->prom_node, "compatible",
2295                                                compat, sizeof(compat));
2296                                 compat[15] = '\0';
2297                                 if (!strcmp(compat, "SUNW,CS4231"))
2298                                         match = 1;
2299                         }
2300
2301                         if (match &&
2302                             cs4231_ebus_attach(edev) == 0)
2303                                 found++;
2304                 }
2305         }
2306 #endif
2307
2308
2309         return (found > 0) ? 0 : -EIO;
2310 }
2311
2312 static void __exit cs4231_exit(void)
2313 {
2314         struct snd_cs4231 *p = cs4231_list;
2315
2316         while (p != NULL) {
2317                 struct snd_cs4231 *next = p->next;
2318
2319                 snd_card_free(p->card);
2320
2321                 p = next;
2322         }
2323
2324         cs4231_list = NULL;
2325 }
2326
2327 module_init(cs4231_init);
2328 module_exit(cs4231_exit);