xref: /openbmc/linux/sound/pci/rme9652/rme9652.c (revision b34e08d5)
1 /*
2  *   ALSA driver for RME Digi9652 audio interfaces
3  *
4  *	Copyright (c) 1999 IEM - Winfried Ritsch
5  *      Copyright (c) 1999-2001  Paul Davis
6  *
7  *   This program is free software; you can redistribute it and/or modify
8  *   it under the terms of the GNU General Public License as published by
9  *   the Free Software Foundation; either version 2 of the License, or
10  *   (at your option) any later version.
11  *
12  *   This program is distributed in the hope that it will be useful,
13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *   GNU General Public License for more details.
16  *
17  *   You should have received a copy of the GNU General Public License
18  *   along with this program; if not, write to the Free Software
19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
20  *
21  */
22 
23 #include <linux/delay.h>
24 #include <linux/init.h>
25 #include <linux/interrupt.h>
26 #include <linux/pci.h>
27 #include <linux/module.h>
28 
29 #include <sound/core.h>
30 #include <sound/control.h>
31 #include <sound/pcm.h>
32 #include <sound/info.h>
33 #include <sound/asoundef.h>
34 #include <sound/initval.h>
35 
36 #include <asm/current.h>
37 #include <asm/io.h>
38 
39 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
40 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
41 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
42 static bool precise_ptr[SNDRV_CARDS];			/* Enable precise pointer */
43 
44 module_param_array(index, int, NULL, 0444);
45 MODULE_PARM_DESC(index, "Index value for RME Digi9652 (Hammerfall) soundcard.");
46 module_param_array(id, charp, NULL, 0444);
47 MODULE_PARM_DESC(id, "ID string for RME Digi9652 (Hammerfall) soundcard.");
48 module_param_array(enable, bool, NULL, 0444);
49 MODULE_PARM_DESC(enable, "Enable/disable specific RME96{52,36} soundcards.");
50 module_param_array(precise_ptr, bool, NULL, 0444);
51 MODULE_PARM_DESC(precise_ptr, "Enable precise pointer (doesn't work reliably).");
52 MODULE_AUTHOR("Paul Davis <pbd@op.net>, Winfried Ritsch");
53 MODULE_DESCRIPTION("RME Digi9652/Digi9636");
54 MODULE_LICENSE("GPL");
55 MODULE_SUPPORTED_DEVICE("{{RME,Hammerfall},"
56 		"{RME,Hammerfall-Light}}");
57 
58 /* The Hammerfall has two sets of 24 ADAT + 2 S/PDIF channels, one for
59    capture, one for playback. Both the ADAT and S/PDIF channels appear
60    to the host CPU in the same block of memory. There is no functional
61    difference between them in terms of access.
62 
63    The Hammerfall Light is identical to the Hammerfall, except that it
64    has 2 sets 18 channels (16 ADAT + 2 S/PDIF) for capture and playback.
65 */
66 
67 #define RME9652_NCHANNELS       26
68 #define RME9636_NCHANNELS       18
69 
70 /* Preferred sync source choices - used by "sync_pref" control switch */
71 
72 #define RME9652_SYNC_FROM_SPDIF 0
73 #define RME9652_SYNC_FROM_ADAT1 1
74 #define RME9652_SYNC_FROM_ADAT2 2
75 #define RME9652_SYNC_FROM_ADAT3 3
76 
77 /* Possible sources of S/PDIF input */
78 
79 #define RME9652_SPDIFIN_OPTICAL 0	/* optical (ADAT1) */
80 #define RME9652_SPDIFIN_COAXIAL 1	/* coaxial (RCA) */
81 #define RME9652_SPDIFIN_INTERN  2	/* internal (CDROM) */
82 
83 /* ------------- Status-Register bits --------------------- */
84 
85 #define RME9652_IRQ	   (1<<0)	/* IRQ is High if not reset by irq_clear */
86 #define RME9652_lock_2	   (1<<1)	/* ADAT 3-PLL: 1=locked, 0=unlocked */
87 #define RME9652_lock_1	   (1<<2)	/* ADAT 2-PLL: 1=locked, 0=unlocked */
88 #define RME9652_lock_0	   (1<<3)	/* ADAT 1-PLL: 1=locked, 0=unlocked */
89 #define RME9652_fs48	   (1<<4)	/* sample rate is 0=44.1/88.2,1=48/96 Khz */
90 #define RME9652_wsel_rd	   (1<<5)	/* if Word-Clock is used and valid then 1 */
91                                         /* bits 6-15 encode h/w buffer pointer position */
92 #define RME9652_sync_2	   (1<<16)	/* if ADAT-IN 3 in sync to system clock */
93 #define RME9652_sync_1	   (1<<17)	/* if ADAT-IN 2 in sync to system clock */
94 #define RME9652_sync_0	   (1<<18)	/* if ADAT-IN 1 in sync to system clock */
95 #define RME9652_DS_rd	   (1<<19)	/* 1=Double Speed Mode, 0=Normal Speed */
96 #define RME9652_tc_busy	   (1<<20)	/* 1=time-code copy in progress (960ms) */
97 #define RME9652_tc_out	   (1<<21)	/* time-code out bit */
98 #define RME9652_F_0	   (1<<22)	/* 000=64kHz, 100=88.2kHz, 011=96kHz  */
99 #define RME9652_F_1	   (1<<23)	/* 111=32kHz, 110=44.1kHz, 101=48kHz, */
100 #define RME9652_F_2	   (1<<24)	/* external Crystal Chip if ERF=1 */
101 #define RME9652_ERF	   (1<<25)	/* Error-Flag of SDPIF Receiver (1=No Lock) */
102 #define RME9652_buffer_id  (1<<26)	/* toggles by each interrupt on rec/play */
103 #define RME9652_tc_valid   (1<<27)	/* 1 = a signal is detected on time-code input */
104 #define RME9652_SPDIF_READ (1<<28)      /* byte available from Rev 1.5+ S/PDIF interface */
105 
106 #define RME9652_sync	  (RME9652_sync_0|RME9652_sync_1|RME9652_sync_2)
107 #define RME9652_lock	  (RME9652_lock_0|RME9652_lock_1|RME9652_lock_2)
108 #define RME9652_F	  (RME9652_F_0|RME9652_F_1|RME9652_F_2)
109 #define rme9652_decode_spdif_rate(x) ((x)>>22)
110 
111 /* Bit 6..15 : h/w buffer pointer */
112 
113 #define RME9652_buf_pos	  0x000FFC0
114 
115 /* Bits 31,30,29 are bits 5,4,3 of h/w pointer position on later
116    Rev G EEPROMS and Rev 1.5 cards or later.
117 */
118 
119 #define RME9652_REV15_buf_pos(x) ((((x)&0xE0000000)>>26)|((x)&RME9652_buf_pos))
120 
121 /* amount of io space we remap for register access. i'm not sure we
122    even need this much, but 1K is nice round number :)
123 */
124 
125 #define RME9652_IO_EXTENT     1024
126 
127 #define RME9652_init_buffer       0
128 #define RME9652_play_buffer       32	/* holds ptr to 26x64kBit host RAM */
129 #define RME9652_rec_buffer        36	/* holds ptr to 26x64kBit host RAM */
130 #define RME9652_control_register  64
131 #define RME9652_irq_clear         96
132 #define RME9652_time_code         100	/* useful if used with alesis adat */
133 #define RME9652_thru_base         128	/* 132...228 Thru for 26 channels */
134 
135 /* Read-only registers */
136 
137 /* Writing to any of the register locations writes to the status
138    register. We'll use the first location as our point of access.
139 */
140 
141 #define RME9652_status_register    0
142 
143 /* --------- Control-Register Bits ---------------- */
144 
145 
146 #define RME9652_start_bit	   (1<<0)	/* start record/play */
147                                                 /* bits 1-3 encode buffersize/latency */
148 #define RME9652_Master		   (1<<4)	/* Clock Mode Master=1,Slave/Auto=0 */
149 #define RME9652_IE		   (1<<5)	/* Interrupt Enable */
150 #define RME9652_freq		   (1<<6)       /* samplerate 0=44.1/88.2, 1=48/96 kHz */
151 #define RME9652_freq1		   (1<<7)       /* if 0, 32kHz, else always 1 */
152 #define RME9652_DS                 (1<<8)	/* Doule Speed 0=44.1/48, 1=88.2/96 Khz */
153 #define RME9652_PRO		   (1<<9)	/* S/PDIF out: 0=consumer, 1=professional */
154 #define RME9652_EMP		   (1<<10)	/*  Emphasis 0=None, 1=ON */
155 #define RME9652_Dolby		   (1<<11)	/*  Non-audio bit 1=set, 0=unset */
156 #define RME9652_opt_out	           (1<<12)	/* Use 1st optical OUT as SPDIF: 1=yes,0=no */
157 #define RME9652_wsel		   (1<<13)	/* use Wordclock as sync (overwrites master) */
158 #define RME9652_inp_0		   (1<<14)	/* SPDIF-IN: 00=optical (ADAT1),     */
159 #define RME9652_inp_1		   (1<<15)	/* 01=koaxial (Cinch), 10=Internal CDROM */
160 #define RME9652_SyncPref_ADAT2	   (1<<16)
161 #define RME9652_SyncPref_ADAT3	   (1<<17)
162 #define RME9652_SPDIF_RESET        (1<<18)      /* Rev 1.5+: h/w S/PDIF receiver */
163 #define RME9652_SPDIF_SELECT       (1<<19)
164 #define RME9652_SPDIF_CLOCK        (1<<20)
165 #define RME9652_SPDIF_WRITE        (1<<21)
166 #define RME9652_ADAT1_INTERNAL     (1<<22)      /* Rev 1.5+: if set, internal CD connector carries ADAT */
167 
168 /* buffersize = 512Bytes * 2^n, where n is made from Bit2 ... Bit0 */
169 
170 #define RME9652_latency            0x0e
171 #define rme9652_encode_latency(x)  (((x)&0x7)<<1)
172 #define rme9652_decode_latency(x)  (((x)>>1)&0x7)
173 #define rme9652_running_double_speed(s) ((s)->control_register & RME9652_DS)
174 #define RME9652_inp                (RME9652_inp_0|RME9652_inp_1)
175 #define rme9652_encode_spdif_in(x) (((x)&0x3)<<14)
176 #define rme9652_decode_spdif_in(x) (((x)>>14)&0x3)
177 
178 #define RME9652_SyncPref_Mask      (RME9652_SyncPref_ADAT2|RME9652_SyncPref_ADAT3)
179 #define RME9652_SyncPref_ADAT1	   0
180 #define RME9652_SyncPref_SPDIF	   (RME9652_SyncPref_ADAT2|RME9652_SyncPref_ADAT3)
181 
182 /* the size of a substream (1 mono data stream) */
183 
184 #define RME9652_CHANNEL_BUFFER_SAMPLES  (16*1024)
185 #define RME9652_CHANNEL_BUFFER_BYTES    (4*RME9652_CHANNEL_BUFFER_SAMPLES)
186 
187 /* the size of the area we need to allocate for DMA transfers. the
188    size is the same regardless of the number of channels - the
189    9636 still uses the same memory area.
190 
191    Note that we allocate 1 more channel than is apparently needed
192    because the h/w seems to write 1 byte beyond the end of the last
193    page. Sigh.
194 */
195 
196 #define RME9652_DMA_AREA_BYTES ((RME9652_NCHANNELS+1) * RME9652_CHANNEL_BUFFER_BYTES)
197 #define RME9652_DMA_AREA_KILOBYTES (RME9652_DMA_AREA_BYTES/1024)
198 
199 struct snd_rme9652 {
200 	int dev;
201 
202 	spinlock_t lock;
203 	int irq;
204 	unsigned long port;
205 	void __iomem *iobase;
206 
207 	int precise_ptr;
208 
209 	u32 control_register;	/* cached value */
210 	u32 thru_bits;		/* thru 1=on, 0=off channel 1=Bit1... channel 26= Bit26 */
211 
212 	u32 creg_spdif;
213 	u32 creg_spdif_stream;
214 
215 	char *card_name;		/* hammerfall or hammerfall light names */
216 
217         size_t hw_offsetmask;     	/* &-with status register to get real hw_offset */
218 	size_t prev_hw_offset;		/* previous hw offset */
219 	size_t max_jitter;		/* maximum jitter in frames for
220 					   hw pointer */
221 	size_t period_bytes;		/* guess what this is */
222 
223 	unsigned char ds_channels;
224 	unsigned char ss_channels;	/* different for hammerfall/hammerfall-light */
225 
226 	struct snd_dma_buffer playback_dma_buf;
227 	struct snd_dma_buffer capture_dma_buf;
228 
229 	unsigned char *capture_buffer;	/* suitably aligned address */
230 	unsigned char *playback_buffer;	/* suitably aligned address */
231 
232 	pid_t capture_pid;
233 	pid_t playback_pid;
234 
235 	struct snd_pcm_substream *capture_substream;
236 	struct snd_pcm_substream *playback_substream;
237 	int running;
238 
239         int passthru;                   /* non-zero if doing pass-thru */
240         int hw_rev;                     /* h/w rev * 10 (i.e. 1.5 has hw_rev = 15) */
241 
242 	int last_spdif_sample_rate;	/* so that we can catch externally ... */
243 	int last_adat_sample_rate;	/* ... induced rate changes            */
244 
245         char *channel_map;
246 
247 	struct snd_card *card;
248 	struct snd_pcm *pcm;
249 	struct pci_dev *pci;
250 	struct snd_kcontrol *spdif_ctl;
251 
252 };
253 
254 /* These tables map the ALSA channels 1..N to the channels that we
255    need to use in order to find the relevant channel buffer. RME
256    refer to this kind of mapping as between "the ADAT channel and
257    the DMA channel." We index it using the logical audio channel,
258    and the value is the DMA channel (i.e. channel buffer number)
259    where the data for that channel can be read/written from/to.
260 */
261 
262 static char channel_map_9652_ss[26] = {
263 	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
264 	18, 19, 20, 21, 22, 23, 24, 25
265 };
266 
267 static char channel_map_9636_ss[26] = {
268 	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
269 	/* channels 16 and 17 are S/PDIF */
270 	24, 25,
271 	/* channels 18-25 don't exist */
272 	-1, -1, -1, -1, -1, -1, -1, -1
273 };
274 
275 static char channel_map_9652_ds[26] = {
276 	/* ADAT channels are remapped */
277 	1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23,
278 	/* channels 12 and 13 are S/PDIF */
279 	24, 25,
280 	/* others don't exist */
281 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
282 };
283 
284 static char channel_map_9636_ds[26] = {
285 	/* ADAT channels are remapped */
286 	1, 3, 5, 7, 9, 11, 13, 15,
287 	/* channels 8 and 9 are S/PDIF */
288 	24, 25,
289 	/* others don't exist */
290 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
291 };
292 
293 static int snd_hammerfall_get_buffer(struct pci_dev *pci, struct snd_dma_buffer *dmab, size_t size)
294 {
295 	dmab->dev.type = SNDRV_DMA_TYPE_DEV;
296 	dmab->dev.dev = snd_dma_pci_data(pci);
297 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
298 				size, dmab) < 0)
299 		return -ENOMEM;
300 	return 0;
301 }
302 
303 static void snd_hammerfall_free_buffer(struct snd_dma_buffer *dmab, struct pci_dev *pci)
304 {
305 	if (dmab->area)
306 		snd_dma_free_pages(dmab);
307 }
308 
309 
310 static DEFINE_PCI_DEVICE_TABLE(snd_rme9652_ids) = {
311 	{
312 		.vendor	   = 0x10ee,
313 		.device	   = 0x3fc4,
314 		.subvendor = PCI_ANY_ID,
315 		.subdevice = PCI_ANY_ID,
316 	},	/* RME Digi9652 */
317 	{ 0, },
318 };
319 
320 MODULE_DEVICE_TABLE(pci, snd_rme9652_ids);
321 
322 static inline void rme9652_write(struct snd_rme9652 *rme9652, int reg, int val)
323 {
324 	writel(val, rme9652->iobase + reg);
325 }
326 
327 static inline unsigned int rme9652_read(struct snd_rme9652 *rme9652, int reg)
328 {
329 	return readl(rme9652->iobase + reg);
330 }
331 
332 static inline int snd_rme9652_use_is_exclusive(struct snd_rme9652 *rme9652)
333 {
334 	unsigned long flags;
335 	int ret = 1;
336 
337 	spin_lock_irqsave(&rme9652->lock, flags);
338 	if ((rme9652->playback_pid != rme9652->capture_pid) &&
339 	    (rme9652->playback_pid >= 0) && (rme9652->capture_pid >= 0)) {
340 		ret = 0;
341 	}
342 	spin_unlock_irqrestore(&rme9652->lock, flags);
343 	return ret;
344 }
345 
346 static inline int rme9652_adat_sample_rate(struct snd_rme9652 *rme9652)
347 {
348 	if (rme9652_running_double_speed(rme9652)) {
349 		return (rme9652_read(rme9652, RME9652_status_register) &
350 			RME9652_fs48) ? 96000 : 88200;
351 	} else {
352 		return (rme9652_read(rme9652, RME9652_status_register) &
353 			RME9652_fs48) ? 48000 : 44100;
354 	}
355 }
356 
357 static inline void rme9652_compute_period_size(struct snd_rme9652 *rme9652)
358 {
359 	unsigned int i;
360 
361 	i = rme9652->control_register & RME9652_latency;
362 	rme9652->period_bytes = 1 << ((rme9652_decode_latency(i) + 8));
363 	rme9652->hw_offsetmask =
364 		(rme9652->period_bytes * 2 - 1) & RME9652_buf_pos;
365 	rme9652->max_jitter = 80;
366 }
367 
368 static snd_pcm_uframes_t rme9652_hw_pointer(struct snd_rme9652 *rme9652)
369 {
370 	int status;
371 	unsigned int offset, frag;
372 	snd_pcm_uframes_t period_size = rme9652->period_bytes / 4;
373 	snd_pcm_sframes_t delta;
374 
375 	status = rme9652_read(rme9652, RME9652_status_register);
376 	if (!rme9652->precise_ptr)
377 		return (status & RME9652_buffer_id) ? period_size : 0;
378 	offset = status & RME9652_buf_pos;
379 
380 	/* The hardware may give a backward movement for up to 80 frames
381            Martin Kirst <martin.kirst@freenet.de> knows the details.
382 	*/
383 
384 	delta = rme9652->prev_hw_offset - offset;
385 	delta &= 0xffff;
386 	if (delta <= (snd_pcm_sframes_t)rme9652->max_jitter * 4)
387 		offset = rme9652->prev_hw_offset;
388 	else
389 		rme9652->prev_hw_offset = offset;
390 	offset &= rme9652->hw_offsetmask;
391 	offset /= 4;
392 	frag = status & RME9652_buffer_id;
393 
394 	if (offset < period_size) {
395 		if (offset > rme9652->max_jitter) {
396 			if (frag)
397 				dev_err(rme9652->card->dev,
398 					"Unexpected hw_pointer position (bufid == 0): status: %x offset: %d\n",
399 					status, offset);
400 		} else if (!frag)
401 			return 0;
402 		offset -= rme9652->max_jitter;
403 		if ((int)offset < 0)
404 			offset += period_size * 2;
405 	} else {
406 		if (offset > period_size + rme9652->max_jitter) {
407 			if (!frag)
408 				dev_err(rme9652->card->dev,
409 					"Unexpected hw_pointer position (bufid == 1): status: %x offset: %d\n",
410 					status, offset);
411 		} else if (frag)
412 			return period_size;
413 		offset -= rme9652->max_jitter;
414 	}
415 
416 	return offset;
417 }
418 
419 static inline void rme9652_reset_hw_pointer(struct snd_rme9652 *rme9652)
420 {
421 	int i;
422 
423 	/* reset the FIFO pointer to zero. We do this by writing to 8
424 	   registers, each of which is a 32bit wide register, and set
425 	   them all to zero. Note that s->iobase is a pointer to
426 	   int32, not pointer to char.
427 	*/
428 
429 	for (i = 0; i < 8; i++) {
430 		rme9652_write(rme9652, i * 4, 0);
431 		udelay(10);
432 	}
433 	rme9652->prev_hw_offset = 0;
434 }
435 
436 static inline void rme9652_start(struct snd_rme9652 *s)
437 {
438 	s->control_register |= (RME9652_IE | RME9652_start_bit);
439 	rme9652_write(s, RME9652_control_register, s->control_register);
440 }
441 
442 static inline void rme9652_stop(struct snd_rme9652 *s)
443 {
444 	s->control_register &= ~(RME9652_start_bit | RME9652_IE);
445 	rme9652_write(s, RME9652_control_register, s->control_register);
446 }
447 
448 static int rme9652_set_interrupt_interval(struct snd_rme9652 *s,
449 					  unsigned int frames)
450 {
451 	int restart = 0;
452 	int n;
453 
454 	spin_lock_irq(&s->lock);
455 
456 	if ((restart = s->running)) {
457 		rme9652_stop(s);
458 	}
459 
460 	frames >>= 7;
461 	n = 0;
462 	while (frames) {
463 		n++;
464 		frames >>= 1;
465 	}
466 
467 	s->control_register &= ~RME9652_latency;
468 	s->control_register |= rme9652_encode_latency(n);
469 
470 	rme9652_write(s, RME9652_control_register, s->control_register);
471 
472 	rme9652_compute_period_size(s);
473 
474 	if (restart)
475 		rme9652_start(s);
476 
477 	spin_unlock_irq(&s->lock);
478 
479 	return 0;
480 }
481 
482 static int rme9652_set_rate(struct snd_rme9652 *rme9652, int rate)
483 {
484 	int restart;
485 	int reject_if_open = 0;
486 	int xrate;
487 
488 	if (!snd_rme9652_use_is_exclusive (rme9652)) {
489 		return -EBUSY;
490 	}
491 
492 	/* Changing from a "single speed" to a "double speed" rate is
493 	   not allowed if any substreams are open. This is because
494 	   such a change causes a shift in the location of
495 	   the DMA buffers and a reduction in the number of available
496 	   buffers.
497 
498 	   Note that a similar but essentially insoluble problem
499 	   exists for externally-driven rate changes. All we can do
500 	   is to flag rate changes in the read/write routines.
501 	 */
502 
503 	spin_lock_irq(&rme9652->lock);
504 	xrate = rme9652_adat_sample_rate(rme9652);
505 
506 	switch (rate) {
507 	case 44100:
508 		if (xrate > 48000) {
509 			reject_if_open = 1;
510 		}
511 		rate = 0;
512 		break;
513 	case 48000:
514 		if (xrate > 48000) {
515 			reject_if_open = 1;
516 		}
517 		rate = RME9652_freq;
518 		break;
519 	case 88200:
520 		if (xrate < 48000) {
521 			reject_if_open = 1;
522 		}
523 		rate = RME9652_DS;
524 		break;
525 	case 96000:
526 		if (xrate < 48000) {
527 			reject_if_open = 1;
528 		}
529 		rate = RME9652_DS | RME9652_freq;
530 		break;
531 	default:
532 		spin_unlock_irq(&rme9652->lock);
533 		return -EINVAL;
534 	}
535 
536 	if (reject_if_open && (rme9652->capture_pid >= 0 || rme9652->playback_pid >= 0)) {
537 		spin_unlock_irq(&rme9652->lock);
538 		return -EBUSY;
539 	}
540 
541 	if ((restart = rme9652->running)) {
542 		rme9652_stop(rme9652);
543 	}
544 	rme9652->control_register &= ~(RME9652_freq | RME9652_DS);
545 	rme9652->control_register |= rate;
546 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
547 
548 	if (restart) {
549 		rme9652_start(rme9652);
550 	}
551 
552 	if (rate & RME9652_DS) {
553 		if (rme9652->ss_channels == RME9652_NCHANNELS) {
554 			rme9652->channel_map = channel_map_9652_ds;
555 		} else {
556 			rme9652->channel_map = channel_map_9636_ds;
557 		}
558 	} else {
559 		if (rme9652->ss_channels == RME9652_NCHANNELS) {
560 			rme9652->channel_map = channel_map_9652_ss;
561 		} else {
562 			rme9652->channel_map = channel_map_9636_ss;
563 		}
564 	}
565 
566 	spin_unlock_irq(&rme9652->lock);
567 	return 0;
568 }
569 
570 static void rme9652_set_thru(struct snd_rme9652 *rme9652, int channel, int enable)
571 {
572 	int i;
573 
574 	rme9652->passthru = 0;
575 
576 	if (channel < 0) {
577 
578 		/* set thru for all channels */
579 
580 		if (enable) {
581 			for (i = 0; i < RME9652_NCHANNELS; i++) {
582 				rme9652->thru_bits |= (1 << i);
583 				rme9652_write(rme9652, RME9652_thru_base + i * 4, 1);
584 			}
585 		} else {
586 			for (i = 0; i < RME9652_NCHANNELS; i++) {
587 				rme9652->thru_bits &= ~(1 << i);
588 				rme9652_write(rme9652, RME9652_thru_base + i * 4, 0);
589 			}
590 		}
591 
592 	} else {
593 		int mapped_channel;
594 
595 		mapped_channel = rme9652->channel_map[channel];
596 
597 		if (enable) {
598 			rme9652->thru_bits |= (1 << mapped_channel);
599 		} else {
600 			rme9652->thru_bits &= ~(1 << mapped_channel);
601 		}
602 
603 		rme9652_write(rme9652,
604 			       RME9652_thru_base + mapped_channel * 4,
605 			       enable ? 1 : 0);
606 	}
607 }
608 
609 static int rme9652_set_passthru(struct snd_rme9652 *rme9652, int onoff)
610 {
611 	if (onoff) {
612 		rme9652_set_thru(rme9652, -1, 1);
613 
614 		/* we don't want interrupts, so do a
615 		   custom version of rme9652_start().
616 		*/
617 
618 		rme9652->control_register =
619 			RME9652_inp_0 |
620 			rme9652_encode_latency(7) |
621 			RME9652_start_bit;
622 
623 		rme9652_reset_hw_pointer(rme9652);
624 
625 		rme9652_write(rme9652, RME9652_control_register,
626 			      rme9652->control_register);
627 		rme9652->passthru = 1;
628 	} else {
629 		rme9652_set_thru(rme9652, -1, 0);
630 		rme9652_stop(rme9652);
631 		rme9652->passthru = 0;
632 	}
633 
634 	return 0;
635 }
636 
637 static void rme9652_spdif_set_bit (struct snd_rme9652 *rme9652, int mask, int onoff)
638 {
639 	if (onoff)
640 		rme9652->control_register |= mask;
641 	else
642 		rme9652->control_register &= ~mask;
643 
644 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
645 }
646 
647 static void rme9652_spdif_write_byte (struct snd_rme9652 *rme9652, const int val)
648 {
649 	long mask;
650 	long i;
651 
652 	for (i = 0, mask = 0x80; i < 8; i++, mask >>= 1) {
653 		if (val & mask)
654 			rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_WRITE, 1);
655 		else
656 			rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_WRITE, 0);
657 
658 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 1);
659 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 0);
660 	}
661 }
662 
663 static int rme9652_spdif_read_byte (struct snd_rme9652 *rme9652)
664 {
665 	long mask;
666 	long val;
667 	long i;
668 
669 	val = 0;
670 
671 	for (i = 0, mask = 0x80;  i < 8; i++, mask >>= 1) {
672 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 1);
673 		if (rme9652_read (rme9652, RME9652_status_register) & RME9652_SPDIF_READ)
674 			val |= mask;
675 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 0);
676 	}
677 
678 	return val;
679 }
680 
681 static void rme9652_write_spdif_codec (struct snd_rme9652 *rme9652, const int address, const int data)
682 {
683 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
684 	rme9652_spdif_write_byte (rme9652, 0x20);
685 	rme9652_spdif_write_byte (rme9652, address);
686 	rme9652_spdif_write_byte (rme9652, data);
687 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
688 }
689 
690 
691 static int rme9652_spdif_read_codec (struct snd_rme9652 *rme9652, const int address)
692 {
693 	int ret;
694 
695 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
696 	rme9652_spdif_write_byte (rme9652, 0x20);
697 	rme9652_spdif_write_byte (rme9652, address);
698 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
699 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
700 
701 	rme9652_spdif_write_byte (rme9652, 0x21);
702 	ret = rme9652_spdif_read_byte (rme9652);
703 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
704 
705 	return ret;
706 }
707 
708 static void rme9652_initialize_spdif_receiver (struct snd_rme9652 *rme9652)
709 {
710 	/* XXX what unsets this ? */
711 
712 	rme9652->control_register |= RME9652_SPDIF_RESET;
713 
714 	rme9652_write_spdif_codec (rme9652, 4, 0x40);
715 	rme9652_write_spdif_codec (rme9652, 17, 0x13);
716 	rme9652_write_spdif_codec (rme9652, 6, 0x02);
717 }
718 
719 static inline int rme9652_spdif_sample_rate(struct snd_rme9652 *s)
720 {
721 	unsigned int rate_bits;
722 
723 	if (rme9652_read(s, RME9652_status_register) & RME9652_ERF) {
724 		return -1;	/* error condition */
725 	}
726 
727 	if (s->hw_rev == 15) {
728 
729 		int x, y, ret;
730 
731 		x = rme9652_spdif_read_codec (s, 30);
732 
733 		if (x != 0)
734 			y = 48000 * 64 / x;
735 		else
736 			y = 0;
737 
738 		if      (y > 30400 && y < 33600)  ret = 32000;
739 		else if (y > 41900 && y < 46000)  ret = 44100;
740 		else if (y > 46000 && y < 50400)  ret = 48000;
741 		else if (y > 60800 && y < 67200)  ret = 64000;
742 		else if (y > 83700 && y < 92000)  ret = 88200;
743 		else if (y > 92000 && y < 100000) ret = 96000;
744 		else                              ret = 0;
745 		return ret;
746 	}
747 
748 	rate_bits = rme9652_read(s, RME9652_status_register) & RME9652_F;
749 
750 	switch (rme9652_decode_spdif_rate(rate_bits)) {
751 	case 0x7:
752 		return 32000;
753 		break;
754 
755 	case 0x6:
756 		return 44100;
757 		break;
758 
759 	case 0x5:
760 		return 48000;
761 		break;
762 
763 	case 0x4:
764 		return 88200;
765 		break;
766 
767 	case 0x3:
768 		return 96000;
769 		break;
770 
771 	case 0x0:
772 		return 64000;
773 		break;
774 
775 	default:
776 		dev_err(s->card->dev,
777 			"%s: unknown S/PDIF input rate (bits = 0x%x)\n",
778 			   s->card_name, rate_bits);
779 		return 0;
780 		break;
781 	}
782 }
783 
784 /*-----------------------------------------------------------------------------
785   Control Interface
786   ----------------------------------------------------------------------------*/
787 
788 static u32 snd_rme9652_convert_from_aes(struct snd_aes_iec958 *aes)
789 {
790 	u32 val = 0;
791 	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME9652_PRO : 0;
792 	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME9652_Dolby : 0;
793 	if (val & RME9652_PRO)
794 		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME9652_EMP : 0;
795 	else
796 		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME9652_EMP : 0;
797 	return val;
798 }
799 
800 static void snd_rme9652_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)
801 {
802 	aes->status[0] = ((val & RME9652_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
803 			 ((val & RME9652_Dolby) ? IEC958_AES0_NONAUDIO : 0);
804 	if (val & RME9652_PRO)
805 		aes->status[0] |= (val & RME9652_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
806 	else
807 		aes->status[0] |= (val & RME9652_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
808 }
809 
810 static int snd_rme9652_control_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
811 {
812 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
813 	uinfo->count = 1;
814 	return 0;
815 }
816 
817 static int snd_rme9652_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
818 {
819 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
820 
821 	snd_rme9652_convert_to_aes(&ucontrol->value.iec958, rme9652->creg_spdif);
822 	return 0;
823 }
824 
825 static int snd_rme9652_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
826 {
827 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
828 	int change;
829 	u32 val;
830 
831 	val = snd_rme9652_convert_from_aes(&ucontrol->value.iec958);
832 	spin_lock_irq(&rme9652->lock);
833 	change = val != rme9652->creg_spdif;
834 	rme9652->creg_spdif = val;
835 	spin_unlock_irq(&rme9652->lock);
836 	return change;
837 }
838 
839 static int snd_rme9652_control_spdif_stream_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
840 {
841 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
842 	uinfo->count = 1;
843 	return 0;
844 }
845 
846 static int snd_rme9652_control_spdif_stream_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
847 {
848 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
849 
850 	snd_rme9652_convert_to_aes(&ucontrol->value.iec958, rme9652->creg_spdif_stream);
851 	return 0;
852 }
853 
854 static int snd_rme9652_control_spdif_stream_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
855 {
856 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
857 	int change;
858 	u32 val;
859 
860 	val = snd_rme9652_convert_from_aes(&ucontrol->value.iec958);
861 	spin_lock_irq(&rme9652->lock);
862 	change = val != rme9652->creg_spdif_stream;
863 	rme9652->creg_spdif_stream = val;
864 	rme9652->control_register &= ~(RME9652_PRO | RME9652_Dolby | RME9652_EMP);
865 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register |= val);
866 	spin_unlock_irq(&rme9652->lock);
867 	return change;
868 }
869 
870 static int snd_rme9652_control_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
871 {
872 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
873 	uinfo->count = 1;
874 	return 0;
875 }
876 
877 static int snd_rme9652_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
878 {
879 	ucontrol->value.iec958.status[0] = kcontrol->private_value;
880 	return 0;
881 }
882 
883 #define RME9652_ADAT1_IN(xname, xindex) \
884 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
885   .info = snd_rme9652_info_adat1_in, \
886   .get = snd_rme9652_get_adat1_in, \
887   .put = snd_rme9652_put_adat1_in }
888 
889 static unsigned int rme9652_adat1_in(struct snd_rme9652 *rme9652)
890 {
891 	if (rme9652->control_register & RME9652_ADAT1_INTERNAL)
892 		return 1;
893 	return 0;
894 }
895 
896 static int rme9652_set_adat1_input(struct snd_rme9652 *rme9652, int internal)
897 {
898 	int restart = 0;
899 
900 	if (internal) {
901 		rme9652->control_register |= RME9652_ADAT1_INTERNAL;
902 	} else {
903 		rme9652->control_register &= ~RME9652_ADAT1_INTERNAL;
904 	}
905 
906 	/* XXX do we actually need to stop the card when we do this ? */
907 
908 	if ((restart = rme9652->running)) {
909 		rme9652_stop(rme9652);
910 	}
911 
912 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
913 
914 	if (restart) {
915 		rme9652_start(rme9652);
916 	}
917 
918 	return 0;
919 }
920 
921 static int snd_rme9652_info_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
922 {
923 	static char *texts[2] = {"ADAT1", "Internal"};
924 
925 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
926 	uinfo->count = 1;
927 	uinfo->value.enumerated.items = 2;
928 	if (uinfo->value.enumerated.item > 1)
929 		uinfo->value.enumerated.item = 1;
930 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
931 	return 0;
932 }
933 
934 static int snd_rme9652_get_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
935 {
936 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
937 
938 	spin_lock_irq(&rme9652->lock);
939 	ucontrol->value.enumerated.item[0] = rme9652_adat1_in(rme9652);
940 	spin_unlock_irq(&rme9652->lock);
941 	return 0;
942 }
943 
944 static int snd_rme9652_put_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
945 {
946 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
947 	int change;
948 	unsigned int val;
949 
950 	if (!snd_rme9652_use_is_exclusive(rme9652))
951 		return -EBUSY;
952 	val = ucontrol->value.enumerated.item[0] % 2;
953 	spin_lock_irq(&rme9652->lock);
954 	change = val != rme9652_adat1_in(rme9652);
955 	if (change)
956 		rme9652_set_adat1_input(rme9652, val);
957 	spin_unlock_irq(&rme9652->lock);
958 	return change;
959 }
960 
961 #define RME9652_SPDIF_IN(xname, xindex) \
962 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
963   .info = snd_rme9652_info_spdif_in, \
964   .get = snd_rme9652_get_spdif_in, .put = snd_rme9652_put_spdif_in }
965 
966 static unsigned int rme9652_spdif_in(struct snd_rme9652 *rme9652)
967 {
968 	return rme9652_decode_spdif_in(rme9652->control_register &
969 				       RME9652_inp);
970 }
971 
972 static int rme9652_set_spdif_input(struct snd_rme9652 *rme9652, int in)
973 {
974 	int restart = 0;
975 
976 	rme9652->control_register &= ~RME9652_inp;
977 	rme9652->control_register |= rme9652_encode_spdif_in(in);
978 
979 	if ((restart = rme9652->running)) {
980 		rme9652_stop(rme9652);
981 	}
982 
983 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
984 
985 	if (restart) {
986 		rme9652_start(rme9652);
987 	}
988 
989 	return 0;
990 }
991 
992 static int snd_rme9652_info_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
993 {
994 	static char *texts[3] = {"ADAT1", "Coaxial", "Internal"};
995 
996 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
997 	uinfo->count = 1;
998 	uinfo->value.enumerated.items = 3;
999 	if (uinfo->value.enumerated.item > 2)
1000 		uinfo->value.enumerated.item = 2;
1001 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1002 	return 0;
1003 }
1004 
1005 static int snd_rme9652_get_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1006 {
1007 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1008 
1009 	spin_lock_irq(&rme9652->lock);
1010 	ucontrol->value.enumerated.item[0] = rme9652_spdif_in(rme9652);
1011 	spin_unlock_irq(&rme9652->lock);
1012 	return 0;
1013 }
1014 
1015 static int snd_rme9652_put_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1016 {
1017 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1018 	int change;
1019 	unsigned int val;
1020 
1021 	if (!snd_rme9652_use_is_exclusive(rme9652))
1022 		return -EBUSY;
1023 	val = ucontrol->value.enumerated.item[0] % 3;
1024 	spin_lock_irq(&rme9652->lock);
1025 	change = val != rme9652_spdif_in(rme9652);
1026 	if (change)
1027 		rme9652_set_spdif_input(rme9652, val);
1028 	spin_unlock_irq(&rme9652->lock);
1029 	return change;
1030 }
1031 
1032 #define RME9652_SPDIF_OUT(xname, xindex) \
1033 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1034   .info = snd_rme9652_info_spdif_out, \
1035   .get = snd_rme9652_get_spdif_out, .put = snd_rme9652_put_spdif_out }
1036 
1037 static int rme9652_spdif_out(struct snd_rme9652 *rme9652)
1038 {
1039 	return (rme9652->control_register & RME9652_opt_out) ? 1 : 0;
1040 }
1041 
1042 static int rme9652_set_spdif_output(struct snd_rme9652 *rme9652, int out)
1043 {
1044 	int restart = 0;
1045 
1046 	if (out) {
1047 		rme9652->control_register |= RME9652_opt_out;
1048 	} else {
1049 		rme9652->control_register &= ~RME9652_opt_out;
1050 	}
1051 
1052 	if ((restart = rme9652->running)) {
1053 		rme9652_stop(rme9652);
1054 	}
1055 
1056 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1057 
1058 	if (restart) {
1059 		rme9652_start(rme9652);
1060 	}
1061 
1062 	return 0;
1063 }
1064 
1065 #define snd_rme9652_info_spdif_out	snd_ctl_boolean_mono_info
1066 
1067 static int snd_rme9652_get_spdif_out(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1068 {
1069 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1070 
1071 	spin_lock_irq(&rme9652->lock);
1072 	ucontrol->value.integer.value[0] = rme9652_spdif_out(rme9652);
1073 	spin_unlock_irq(&rme9652->lock);
1074 	return 0;
1075 }
1076 
1077 static int snd_rme9652_put_spdif_out(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1078 {
1079 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1080 	int change;
1081 	unsigned int val;
1082 
1083 	if (!snd_rme9652_use_is_exclusive(rme9652))
1084 		return -EBUSY;
1085 	val = ucontrol->value.integer.value[0] & 1;
1086 	spin_lock_irq(&rme9652->lock);
1087 	change = (int)val != rme9652_spdif_out(rme9652);
1088 	rme9652_set_spdif_output(rme9652, val);
1089 	spin_unlock_irq(&rme9652->lock);
1090 	return change;
1091 }
1092 
1093 #define RME9652_SYNC_MODE(xname, xindex) \
1094 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1095   .info = snd_rme9652_info_sync_mode, \
1096   .get = snd_rme9652_get_sync_mode, .put = snd_rme9652_put_sync_mode }
1097 
1098 static int rme9652_sync_mode(struct snd_rme9652 *rme9652)
1099 {
1100 	if (rme9652->control_register & RME9652_wsel) {
1101 		return 2;
1102 	} else if (rme9652->control_register & RME9652_Master) {
1103 		return 1;
1104 	} else {
1105 		return 0;
1106 	}
1107 }
1108 
1109 static int rme9652_set_sync_mode(struct snd_rme9652 *rme9652, int mode)
1110 {
1111 	int restart = 0;
1112 
1113 	switch (mode) {
1114 	case 0:
1115 		rme9652->control_register &=
1116 		    ~(RME9652_Master | RME9652_wsel);
1117 		break;
1118 	case 1:
1119 		rme9652->control_register =
1120 		    (rme9652->control_register & ~RME9652_wsel) | RME9652_Master;
1121 		break;
1122 	case 2:
1123 		rme9652->control_register |=
1124 		    (RME9652_Master | RME9652_wsel);
1125 		break;
1126 	}
1127 
1128 	if ((restart = rme9652->running)) {
1129 		rme9652_stop(rme9652);
1130 	}
1131 
1132 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1133 
1134 	if (restart) {
1135 		rme9652_start(rme9652);
1136 	}
1137 
1138 	return 0;
1139 }
1140 
1141 static int snd_rme9652_info_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1142 {
1143 	static char *texts[3] = {"AutoSync", "Master", "Word Clock"};
1144 
1145 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1146 	uinfo->count = 1;
1147 	uinfo->value.enumerated.items = 3;
1148 	if (uinfo->value.enumerated.item > 2)
1149 		uinfo->value.enumerated.item = 2;
1150 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1151 	return 0;
1152 }
1153 
1154 static int snd_rme9652_get_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1155 {
1156 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1157 
1158 	spin_lock_irq(&rme9652->lock);
1159 	ucontrol->value.enumerated.item[0] = rme9652_sync_mode(rme9652);
1160 	spin_unlock_irq(&rme9652->lock);
1161 	return 0;
1162 }
1163 
1164 static int snd_rme9652_put_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1165 {
1166 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1167 	int change;
1168 	unsigned int val;
1169 
1170 	val = ucontrol->value.enumerated.item[0] % 3;
1171 	spin_lock_irq(&rme9652->lock);
1172 	change = (int)val != rme9652_sync_mode(rme9652);
1173 	rme9652_set_sync_mode(rme9652, val);
1174 	spin_unlock_irq(&rme9652->lock);
1175 	return change;
1176 }
1177 
1178 #define RME9652_SYNC_PREF(xname, xindex) \
1179 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1180   .info = snd_rme9652_info_sync_pref, \
1181   .get = snd_rme9652_get_sync_pref, .put = snd_rme9652_put_sync_pref }
1182 
1183 static int rme9652_sync_pref(struct snd_rme9652 *rme9652)
1184 {
1185 	switch (rme9652->control_register & RME9652_SyncPref_Mask) {
1186 	case RME9652_SyncPref_ADAT1:
1187 		return RME9652_SYNC_FROM_ADAT1;
1188 	case RME9652_SyncPref_ADAT2:
1189 		return RME9652_SYNC_FROM_ADAT2;
1190 	case RME9652_SyncPref_ADAT3:
1191 		return RME9652_SYNC_FROM_ADAT3;
1192 	case RME9652_SyncPref_SPDIF:
1193 		return RME9652_SYNC_FROM_SPDIF;
1194 	}
1195 	/* Not reachable */
1196 	return 0;
1197 }
1198 
1199 static int rme9652_set_sync_pref(struct snd_rme9652 *rme9652, int pref)
1200 {
1201 	int restart;
1202 
1203 	rme9652->control_register &= ~RME9652_SyncPref_Mask;
1204 	switch (pref) {
1205 	case RME9652_SYNC_FROM_ADAT1:
1206 		rme9652->control_register |= RME9652_SyncPref_ADAT1;
1207 		break;
1208 	case RME9652_SYNC_FROM_ADAT2:
1209 		rme9652->control_register |= RME9652_SyncPref_ADAT2;
1210 		break;
1211 	case RME9652_SYNC_FROM_ADAT3:
1212 		rme9652->control_register |= RME9652_SyncPref_ADAT3;
1213 		break;
1214 	case RME9652_SYNC_FROM_SPDIF:
1215 		rme9652->control_register |= RME9652_SyncPref_SPDIF;
1216 		break;
1217 	}
1218 
1219 	if ((restart = rme9652->running)) {
1220 		rme9652_stop(rme9652);
1221 	}
1222 
1223 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1224 
1225 	if (restart) {
1226 		rme9652_start(rme9652);
1227 	}
1228 
1229 	return 0;
1230 }
1231 
1232 static int snd_rme9652_info_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1233 {
1234 	static char *texts[4] = {"IEC958 In", "ADAT1 In", "ADAT2 In", "ADAT3 In"};
1235 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1236 
1237 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1238 	uinfo->count = 1;
1239 	uinfo->value.enumerated.items = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 3;
1240 	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
1241 		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
1242 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1243 	return 0;
1244 }
1245 
1246 static int snd_rme9652_get_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1247 {
1248 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1249 
1250 	spin_lock_irq(&rme9652->lock);
1251 	ucontrol->value.enumerated.item[0] = rme9652_sync_pref(rme9652);
1252 	spin_unlock_irq(&rme9652->lock);
1253 	return 0;
1254 }
1255 
1256 static int snd_rme9652_put_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1257 {
1258 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1259 	int change, max;
1260 	unsigned int val;
1261 
1262 	if (!snd_rme9652_use_is_exclusive(rme9652))
1263 		return -EBUSY;
1264 	max = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 3;
1265 	val = ucontrol->value.enumerated.item[0] % max;
1266 	spin_lock_irq(&rme9652->lock);
1267 	change = (int)val != rme9652_sync_pref(rme9652);
1268 	rme9652_set_sync_pref(rme9652, val);
1269 	spin_unlock_irq(&rme9652->lock);
1270 	return change;
1271 }
1272 
1273 static int snd_rme9652_info_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1274 {
1275 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1276 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1277 	uinfo->count = rme9652->ss_channels;
1278 	uinfo->value.integer.min = 0;
1279 	uinfo->value.integer.max = 1;
1280 	return 0;
1281 }
1282 
1283 static int snd_rme9652_get_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1284 {
1285 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1286 	unsigned int k;
1287 	u32 thru_bits = rme9652->thru_bits;
1288 
1289 	for (k = 0; k < rme9652->ss_channels; ++k) {
1290 		ucontrol->value.integer.value[k] = !!(thru_bits & (1 << k));
1291 	}
1292 	return 0;
1293 }
1294 
1295 static int snd_rme9652_put_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1296 {
1297 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1298 	int change;
1299 	unsigned int chn;
1300 	u32 thru_bits = 0;
1301 
1302 	if (!snd_rme9652_use_is_exclusive(rme9652))
1303 		return -EBUSY;
1304 
1305 	for (chn = 0; chn < rme9652->ss_channels; ++chn) {
1306 		if (ucontrol->value.integer.value[chn])
1307 			thru_bits |= 1 << chn;
1308 	}
1309 
1310 	spin_lock_irq(&rme9652->lock);
1311 	change = thru_bits ^ rme9652->thru_bits;
1312 	if (change) {
1313 		for (chn = 0; chn < rme9652->ss_channels; ++chn) {
1314 			if (!(change & (1 << chn)))
1315 				continue;
1316 			rme9652_set_thru(rme9652,chn,thru_bits&(1<<chn));
1317 		}
1318 	}
1319 	spin_unlock_irq(&rme9652->lock);
1320 	return !!change;
1321 }
1322 
1323 #define RME9652_PASSTHRU(xname, xindex) \
1324 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1325   .info = snd_rme9652_info_passthru, \
1326   .put = snd_rme9652_put_passthru, \
1327   .get = snd_rme9652_get_passthru }
1328 
1329 #define snd_rme9652_info_passthru	snd_ctl_boolean_mono_info
1330 
1331 static int snd_rme9652_get_passthru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1332 {
1333 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1334 
1335 	spin_lock_irq(&rme9652->lock);
1336 	ucontrol->value.integer.value[0] = rme9652->passthru;
1337 	spin_unlock_irq(&rme9652->lock);
1338 	return 0;
1339 }
1340 
1341 static int snd_rme9652_put_passthru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1342 {
1343 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1344 	int change;
1345 	unsigned int val;
1346 	int err = 0;
1347 
1348 	if (!snd_rme9652_use_is_exclusive(rme9652))
1349 		return -EBUSY;
1350 
1351 	val = ucontrol->value.integer.value[0] & 1;
1352 	spin_lock_irq(&rme9652->lock);
1353 	change = (ucontrol->value.integer.value[0] != rme9652->passthru);
1354 	if (change)
1355 		err = rme9652_set_passthru(rme9652, val);
1356 	spin_unlock_irq(&rme9652->lock);
1357 	return err ? err : change;
1358 }
1359 
1360 /* Read-only switches */
1361 
1362 #define RME9652_SPDIF_RATE(xname, xindex) \
1363 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1364   .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
1365   .info = snd_rme9652_info_spdif_rate, \
1366   .get = snd_rme9652_get_spdif_rate }
1367 
1368 static int snd_rme9652_info_spdif_rate(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1369 {
1370 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1371 	uinfo->count = 1;
1372 	uinfo->value.integer.min = 0;
1373 	uinfo->value.integer.max = 96000;
1374 	return 0;
1375 }
1376 
1377 static int snd_rme9652_get_spdif_rate(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1378 {
1379 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1380 
1381 	spin_lock_irq(&rme9652->lock);
1382 	ucontrol->value.integer.value[0] = rme9652_spdif_sample_rate(rme9652);
1383 	spin_unlock_irq(&rme9652->lock);
1384 	return 0;
1385 }
1386 
1387 #define RME9652_ADAT_SYNC(xname, xindex, xidx) \
1388 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1389   .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
1390   .info = snd_rme9652_info_adat_sync, \
1391   .get = snd_rme9652_get_adat_sync, .private_value = xidx }
1392 
1393 static int snd_rme9652_info_adat_sync(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1394 {
1395 	static char *texts[4] = {"No Lock", "Lock", "No Lock Sync", "Lock Sync"};
1396 
1397 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1398 	uinfo->count = 1;
1399 	uinfo->value.enumerated.items = 4;
1400 	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
1401 		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
1402 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1403 	return 0;
1404 }
1405 
1406 static int snd_rme9652_get_adat_sync(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1407 {
1408 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1409 	unsigned int mask1, mask2, val;
1410 
1411 	switch (kcontrol->private_value) {
1412 	case 0: mask1 = RME9652_lock_0; mask2 = RME9652_sync_0; break;
1413 	case 1: mask1 = RME9652_lock_1; mask2 = RME9652_sync_1; break;
1414 	case 2: mask1 = RME9652_lock_2; mask2 = RME9652_sync_2; break;
1415 	default: return -EINVAL;
1416 	}
1417 	val = rme9652_read(rme9652, RME9652_status_register);
1418 	ucontrol->value.enumerated.item[0] = (val & mask1) ? 1 : 0;
1419 	ucontrol->value.enumerated.item[0] |= (val & mask2) ? 2 : 0;
1420 	return 0;
1421 }
1422 
1423 #define RME9652_TC_VALID(xname, xindex) \
1424 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1425   .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
1426   .info = snd_rme9652_info_tc_valid, \
1427   .get = snd_rme9652_get_tc_valid }
1428 
1429 #define snd_rme9652_info_tc_valid	snd_ctl_boolean_mono_info
1430 
1431 static int snd_rme9652_get_tc_valid(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1432 {
1433 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1434 
1435 	ucontrol->value.integer.value[0] =
1436 		(rme9652_read(rme9652, RME9652_status_register) & RME9652_tc_valid) ? 1 : 0;
1437 	return 0;
1438 }
1439 
1440 #ifdef ALSA_HAS_STANDARD_WAY_OF_RETURNING_TIMECODE
1441 
1442 /* FIXME: this routine needs a port to the new control API --jk */
1443 
1444 static int snd_rme9652_get_tc_value(void *private_data,
1445 				    snd_kswitch_t *kswitch,
1446 				    snd_switch_t *uswitch)
1447 {
1448 	struct snd_rme9652 *s = (struct snd_rme9652 *) private_data;
1449 	u32 value;
1450 	int i;
1451 
1452 	uswitch->type = SNDRV_SW_TYPE_DWORD;
1453 
1454 	if ((rme9652_read(s, RME9652_status_register) &
1455 	     RME9652_tc_valid) == 0) {
1456 		uswitch->value.data32[0] = 0;
1457 		return 0;
1458 	}
1459 
1460 	/* timecode request */
1461 
1462 	rme9652_write(s, RME9652_time_code, 0);
1463 
1464 	/* XXX bug alert: loop-based timing !!!! */
1465 
1466 	for (i = 0; i < 50; i++) {
1467 		if (!(rme9652_read(s, i * 4) & RME9652_tc_busy))
1468 			break;
1469 	}
1470 
1471 	if (!(rme9652_read(s, i * 4) & RME9652_tc_busy)) {
1472 		return -EIO;
1473 	}
1474 
1475 	value = 0;
1476 
1477 	for (i = 0; i < 32; i++) {
1478 		value >>= 1;
1479 
1480 		if (rme9652_read(s, i * 4) & RME9652_tc_out)
1481 			value |= 0x80000000;
1482 	}
1483 
1484 	if (value > 2 * 60 * 48000) {
1485 		value -= 2 * 60 * 48000;
1486 	} else {
1487 		value = 0;
1488 	}
1489 
1490 	uswitch->value.data32[0] = value;
1491 
1492 	return 0;
1493 }
1494 
1495 #endif				/* ALSA_HAS_STANDARD_WAY_OF_RETURNING_TIMECODE */
1496 
1497 static struct snd_kcontrol_new snd_rme9652_controls[] = {
1498 {
1499 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1500 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1501 	.info =		snd_rme9652_control_spdif_info,
1502 	.get =		snd_rme9652_control_spdif_get,
1503 	.put =		snd_rme9652_control_spdif_put,
1504 },
1505 {
1506 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1507 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1508 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
1509 	.info =		snd_rme9652_control_spdif_stream_info,
1510 	.get =		snd_rme9652_control_spdif_stream_get,
1511 	.put =		snd_rme9652_control_spdif_stream_put,
1512 },
1513 {
1514 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
1515 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1516 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
1517 	.info =		snd_rme9652_control_spdif_mask_info,
1518 	.get =		snd_rme9652_control_spdif_mask_get,
1519 	.private_value = IEC958_AES0_NONAUDIO |
1520 			IEC958_AES0_PROFESSIONAL |
1521 			IEC958_AES0_CON_EMPHASIS,
1522 },
1523 {
1524 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
1525 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1526 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
1527 	.info =		snd_rme9652_control_spdif_mask_info,
1528 	.get =		snd_rme9652_control_spdif_mask_get,
1529 	.private_value = IEC958_AES0_NONAUDIO |
1530 			IEC958_AES0_PROFESSIONAL |
1531 			IEC958_AES0_PRO_EMPHASIS,
1532 },
1533 RME9652_SPDIF_IN("IEC958 Input Connector", 0),
1534 RME9652_SPDIF_OUT("IEC958 Output also on ADAT1", 0),
1535 RME9652_SYNC_MODE("Sync Mode", 0),
1536 RME9652_SYNC_PREF("Preferred Sync Source", 0),
1537 {
1538 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1539 	.name = "Channels Thru",
1540 	.index = 0,
1541 	.info = snd_rme9652_info_thru,
1542 	.get = snd_rme9652_get_thru,
1543 	.put = snd_rme9652_put_thru,
1544 },
1545 RME9652_SPDIF_RATE("IEC958 Sample Rate", 0),
1546 RME9652_ADAT_SYNC("ADAT1 Sync Check", 0, 0),
1547 RME9652_ADAT_SYNC("ADAT2 Sync Check", 0, 1),
1548 RME9652_TC_VALID("Timecode Valid", 0),
1549 RME9652_PASSTHRU("Passthru", 0)
1550 };
1551 
1552 static struct snd_kcontrol_new snd_rme9652_adat3_check =
1553 RME9652_ADAT_SYNC("ADAT3 Sync Check", 0, 2);
1554 
1555 static struct snd_kcontrol_new snd_rme9652_adat1_input =
1556 RME9652_ADAT1_IN("ADAT1 Input Source", 0);
1557 
1558 static int snd_rme9652_create_controls(struct snd_card *card, struct snd_rme9652 *rme9652)
1559 {
1560 	unsigned int idx;
1561 	int err;
1562 	struct snd_kcontrol *kctl;
1563 
1564 	for (idx = 0; idx < ARRAY_SIZE(snd_rme9652_controls); idx++) {
1565 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_controls[idx], rme9652))) < 0)
1566 			return err;
1567 		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
1568 			rme9652->spdif_ctl = kctl;
1569 	}
1570 
1571 	if (rme9652->ss_channels == RME9652_NCHANNELS)
1572 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_adat3_check, rme9652))) < 0)
1573 			return err;
1574 
1575 	if (rme9652->hw_rev >= 15)
1576 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_adat1_input, rme9652))) < 0)
1577 			return err;
1578 
1579 	return 0;
1580 }
1581 
1582 /*------------------------------------------------------------
1583    /proc interface
1584  ------------------------------------------------------------*/
1585 
1586 static void
1587 snd_rme9652_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1588 {
1589 	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) entry->private_data;
1590 	u32 thru_bits = rme9652->thru_bits;
1591 	int show_auto_sync_source = 0;
1592 	int i;
1593 	unsigned int status;
1594 	int x;
1595 
1596 	status = rme9652_read(rme9652, RME9652_status_register);
1597 
1598 	snd_iprintf(buffer, "%s (Card #%d)\n", rme9652->card_name, rme9652->card->number + 1);
1599 	snd_iprintf(buffer, "Buffers: capture %p playback %p\n",
1600 		    rme9652->capture_buffer, rme9652->playback_buffer);
1601 	snd_iprintf(buffer, "IRQ: %d Registers bus: 0x%lx VM: 0x%lx\n",
1602 		    rme9652->irq, rme9652->port, (unsigned long)rme9652->iobase);
1603 	snd_iprintf(buffer, "Control register: %x\n", rme9652->control_register);
1604 
1605 	snd_iprintf(buffer, "\n");
1606 
1607 	x = 1 << (6 + rme9652_decode_latency(rme9652->control_register &
1608 					     RME9652_latency));
1609 
1610 	snd_iprintf(buffer, "Latency: %d samples (2 periods of %lu bytes)\n",
1611 		    x, (unsigned long) rme9652->period_bytes);
1612 	snd_iprintf(buffer, "Hardware pointer (frames): %ld\n",
1613 		    rme9652_hw_pointer(rme9652));
1614 	snd_iprintf(buffer, "Passthru: %s\n",
1615 		    rme9652->passthru ? "yes" : "no");
1616 
1617 	if ((rme9652->control_register & (RME9652_Master | RME9652_wsel)) == 0) {
1618 		snd_iprintf(buffer, "Clock mode: autosync\n");
1619 		show_auto_sync_source = 1;
1620 	} else if (rme9652->control_register & RME9652_wsel) {
1621 		if (status & RME9652_wsel_rd) {
1622 			snd_iprintf(buffer, "Clock mode: word clock\n");
1623 		} else {
1624 			snd_iprintf(buffer, "Clock mode: word clock (no signal)\n");
1625 		}
1626 	} else {
1627 		snd_iprintf(buffer, "Clock mode: master\n");
1628 	}
1629 
1630 	if (show_auto_sync_source) {
1631 		switch (rme9652->control_register & RME9652_SyncPref_Mask) {
1632 		case RME9652_SyncPref_ADAT1:
1633 			snd_iprintf(buffer, "Pref. sync source: ADAT1\n");
1634 			break;
1635 		case RME9652_SyncPref_ADAT2:
1636 			snd_iprintf(buffer, "Pref. sync source: ADAT2\n");
1637 			break;
1638 		case RME9652_SyncPref_ADAT3:
1639 			snd_iprintf(buffer, "Pref. sync source: ADAT3\n");
1640 			break;
1641 		case RME9652_SyncPref_SPDIF:
1642 			snd_iprintf(buffer, "Pref. sync source: IEC958\n");
1643 			break;
1644 		default:
1645 			snd_iprintf(buffer, "Pref. sync source: ???\n");
1646 		}
1647 	}
1648 
1649 	if (rme9652->hw_rev >= 15)
1650 		snd_iprintf(buffer, "\nADAT1 Input source: %s\n",
1651 			    (rme9652->control_register & RME9652_ADAT1_INTERNAL) ?
1652 			    "Internal" : "ADAT1 optical");
1653 
1654 	snd_iprintf(buffer, "\n");
1655 
1656 	switch (rme9652_decode_spdif_in(rme9652->control_register &
1657 					RME9652_inp)) {
1658 	case RME9652_SPDIFIN_OPTICAL:
1659 		snd_iprintf(buffer, "IEC958 input: ADAT1\n");
1660 		break;
1661 	case RME9652_SPDIFIN_COAXIAL:
1662 		snd_iprintf(buffer, "IEC958 input: Coaxial\n");
1663 		break;
1664 	case RME9652_SPDIFIN_INTERN:
1665 		snd_iprintf(buffer, "IEC958 input: Internal\n");
1666 		break;
1667 	default:
1668 		snd_iprintf(buffer, "IEC958 input: ???\n");
1669 		break;
1670 	}
1671 
1672 	if (rme9652->control_register & RME9652_opt_out) {
1673 		snd_iprintf(buffer, "IEC958 output: Coaxial & ADAT1\n");
1674 	} else {
1675 		snd_iprintf(buffer, "IEC958 output: Coaxial only\n");
1676 	}
1677 
1678 	if (rme9652->control_register & RME9652_PRO) {
1679 		snd_iprintf(buffer, "IEC958 quality: Professional\n");
1680 	} else {
1681 		snd_iprintf(buffer, "IEC958 quality: Consumer\n");
1682 	}
1683 
1684 	if (rme9652->control_register & RME9652_EMP) {
1685 		snd_iprintf(buffer, "IEC958 emphasis: on\n");
1686 	} else {
1687 		snd_iprintf(buffer, "IEC958 emphasis: off\n");
1688 	}
1689 
1690 	if (rme9652->control_register & RME9652_Dolby) {
1691 		snd_iprintf(buffer, "IEC958 Dolby: on\n");
1692 	} else {
1693 		snd_iprintf(buffer, "IEC958 Dolby: off\n");
1694 	}
1695 
1696 	i = rme9652_spdif_sample_rate(rme9652);
1697 
1698 	if (i < 0) {
1699 		snd_iprintf(buffer,
1700 			    "IEC958 sample rate: error flag set\n");
1701 	} else if (i == 0) {
1702 		snd_iprintf(buffer, "IEC958 sample rate: undetermined\n");
1703 	} else {
1704 		snd_iprintf(buffer, "IEC958 sample rate: %d\n", i);
1705 	}
1706 
1707 	snd_iprintf(buffer, "\n");
1708 
1709 	snd_iprintf(buffer, "ADAT Sample rate: %dHz\n",
1710 		    rme9652_adat_sample_rate(rme9652));
1711 
1712 	/* Sync Check */
1713 
1714 	x = status & RME9652_sync_0;
1715 	if (status & RME9652_lock_0) {
1716 		snd_iprintf(buffer, "ADAT1: %s\n", x ? "Sync" : "Lock");
1717 	} else {
1718 		snd_iprintf(buffer, "ADAT1: No Lock\n");
1719 	}
1720 
1721 	x = status & RME9652_sync_1;
1722 	if (status & RME9652_lock_1) {
1723 		snd_iprintf(buffer, "ADAT2: %s\n", x ? "Sync" : "Lock");
1724 	} else {
1725 		snd_iprintf(buffer, "ADAT2: No Lock\n");
1726 	}
1727 
1728 	x = status & RME9652_sync_2;
1729 	if (status & RME9652_lock_2) {
1730 		snd_iprintf(buffer, "ADAT3: %s\n", x ? "Sync" : "Lock");
1731 	} else {
1732 		snd_iprintf(buffer, "ADAT3: No Lock\n");
1733 	}
1734 
1735 	snd_iprintf(buffer, "\n");
1736 
1737 	snd_iprintf(buffer, "Timecode signal: %s\n",
1738 		    (status & RME9652_tc_valid) ? "yes" : "no");
1739 
1740 	/* thru modes */
1741 
1742 	snd_iprintf(buffer, "Punch Status:\n\n");
1743 
1744 	for (i = 0; i < rme9652->ss_channels; i++) {
1745 		if (thru_bits & (1 << i)) {
1746 			snd_iprintf(buffer, "%2d:  on ", i + 1);
1747 		} else {
1748 			snd_iprintf(buffer, "%2d: off ", i + 1);
1749 		}
1750 
1751 		if (((i + 1) % 8) == 0) {
1752 			snd_iprintf(buffer, "\n");
1753 		}
1754 	}
1755 
1756 	snd_iprintf(buffer, "\n");
1757 }
1758 
1759 static void snd_rme9652_proc_init(struct snd_rme9652 *rme9652)
1760 {
1761 	struct snd_info_entry *entry;
1762 
1763 	if (! snd_card_proc_new(rme9652->card, "rme9652", &entry))
1764 		snd_info_set_text_ops(entry, rme9652, snd_rme9652_proc_read);
1765 }
1766 
1767 static void snd_rme9652_free_buffers(struct snd_rme9652 *rme9652)
1768 {
1769 	snd_hammerfall_free_buffer(&rme9652->capture_dma_buf, rme9652->pci);
1770 	snd_hammerfall_free_buffer(&rme9652->playback_dma_buf, rme9652->pci);
1771 }
1772 
1773 static int snd_rme9652_free(struct snd_rme9652 *rme9652)
1774 {
1775 	if (rme9652->irq >= 0)
1776 		rme9652_stop(rme9652);
1777 	snd_rme9652_free_buffers(rme9652);
1778 
1779 	if (rme9652->irq >= 0)
1780 		free_irq(rme9652->irq, (void *)rme9652);
1781 	if (rme9652->iobase)
1782 		iounmap(rme9652->iobase);
1783 	if (rme9652->port)
1784 		pci_release_regions(rme9652->pci);
1785 
1786 	pci_disable_device(rme9652->pci);
1787 	return 0;
1788 }
1789 
1790 static int snd_rme9652_initialize_memory(struct snd_rme9652 *rme9652)
1791 {
1792 	unsigned long pb_bus, cb_bus;
1793 
1794 	if (snd_hammerfall_get_buffer(rme9652->pci, &rme9652->capture_dma_buf, RME9652_DMA_AREA_BYTES) < 0 ||
1795 	    snd_hammerfall_get_buffer(rme9652->pci, &rme9652->playback_dma_buf, RME9652_DMA_AREA_BYTES) < 0) {
1796 		if (rme9652->capture_dma_buf.area)
1797 			snd_dma_free_pages(&rme9652->capture_dma_buf);
1798 		dev_err(rme9652->card->dev,
1799 			"%s: no buffers available\n", rme9652->card_name);
1800 		return -ENOMEM;
1801 	}
1802 
1803 	/* Align to bus-space 64K boundary */
1804 
1805 	cb_bus = ALIGN(rme9652->capture_dma_buf.addr, 0x10000ul);
1806 	pb_bus = ALIGN(rme9652->playback_dma_buf.addr, 0x10000ul);
1807 
1808 	/* Tell the card where it is */
1809 
1810 	rme9652_write(rme9652, RME9652_rec_buffer, cb_bus);
1811 	rme9652_write(rme9652, RME9652_play_buffer, pb_bus);
1812 
1813 	rme9652->capture_buffer = rme9652->capture_dma_buf.area + (cb_bus - rme9652->capture_dma_buf.addr);
1814 	rme9652->playback_buffer = rme9652->playback_dma_buf.area + (pb_bus - rme9652->playback_dma_buf.addr);
1815 
1816 	return 0;
1817 }
1818 
1819 static void snd_rme9652_set_defaults(struct snd_rme9652 *rme9652)
1820 {
1821 	unsigned int k;
1822 
1823 	/* ASSUMPTION: rme9652->lock is either held, or
1824 	   there is no need to hold it (e.g. during module
1825 	   initialization).
1826 	 */
1827 
1828 	/* set defaults:
1829 
1830 	   SPDIF Input via Coax
1831 	   autosync clock mode
1832 	   maximum latency (7 = 8192 samples, 64Kbyte buffer,
1833 	   which implies 2 4096 sample, 32Kbyte periods).
1834 
1835 	   if rev 1.5, initialize the S/PDIF receiver.
1836 
1837 	 */
1838 
1839 	rme9652->control_register =
1840 	    RME9652_inp_0 | rme9652_encode_latency(7);
1841 
1842 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1843 
1844 	rme9652_reset_hw_pointer(rme9652);
1845 	rme9652_compute_period_size(rme9652);
1846 
1847 	/* default: thru off for all channels */
1848 
1849 	for (k = 0; k < RME9652_NCHANNELS; ++k)
1850 		rme9652_write(rme9652, RME9652_thru_base + k * 4, 0);
1851 
1852 	rme9652->thru_bits = 0;
1853 	rme9652->passthru = 0;
1854 
1855 	/* set a default rate so that the channel map is set up */
1856 
1857 	rme9652_set_rate(rme9652, 48000);
1858 }
1859 
1860 static irqreturn_t snd_rme9652_interrupt(int irq, void *dev_id)
1861 {
1862 	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) dev_id;
1863 
1864 	if (!(rme9652_read(rme9652, RME9652_status_register) & RME9652_IRQ)) {
1865 		return IRQ_NONE;
1866 	}
1867 
1868 	rme9652_write(rme9652, RME9652_irq_clear, 0);
1869 
1870 	if (rme9652->capture_substream) {
1871 		snd_pcm_period_elapsed(rme9652->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
1872 	}
1873 
1874 	if (rme9652->playback_substream) {
1875 		snd_pcm_period_elapsed(rme9652->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream);
1876 	}
1877 	return IRQ_HANDLED;
1878 }
1879 
1880 static snd_pcm_uframes_t snd_rme9652_hw_pointer(struct snd_pcm_substream *substream)
1881 {
1882 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1883 	return rme9652_hw_pointer(rme9652);
1884 }
1885 
1886 static char *rme9652_channel_buffer_location(struct snd_rme9652 *rme9652,
1887 					     int stream,
1888 					     int channel)
1889 
1890 {
1891 	int mapped_channel;
1892 
1893 	if (snd_BUG_ON(channel < 0 || channel >= RME9652_NCHANNELS))
1894 		return NULL;
1895 
1896 	if ((mapped_channel = rme9652->channel_map[channel]) < 0) {
1897 		return NULL;
1898 	}
1899 
1900 	if (stream == SNDRV_PCM_STREAM_CAPTURE) {
1901 		return rme9652->capture_buffer +
1902 			(mapped_channel * RME9652_CHANNEL_BUFFER_BYTES);
1903 	} else {
1904 		return rme9652->playback_buffer +
1905 			(mapped_channel * RME9652_CHANNEL_BUFFER_BYTES);
1906 	}
1907 }
1908 
1909 static int snd_rme9652_playback_copy(struct snd_pcm_substream *substream, int channel,
1910 				     snd_pcm_uframes_t pos, void __user *src, snd_pcm_uframes_t count)
1911 {
1912 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1913 	char *channel_buf;
1914 
1915 	if (snd_BUG_ON(pos + count > RME9652_CHANNEL_BUFFER_BYTES / 4))
1916 		return -EINVAL;
1917 
1918 	channel_buf = rme9652_channel_buffer_location (rme9652,
1919 						       substream->pstr->stream,
1920 						       channel);
1921 	if (snd_BUG_ON(!channel_buf))
1922 		return -EIO;
1923 	if (copy_from_user(channel_buf + pos * 4, src, count * 4))
1924 		return -EFAULT;
1925 	return count;
1926 }
1927 
1928 static int snd_rme9652_capture_copy(struct snd_pcm_substream *substream, int channel,
1929 				    snd_pcm_uframes_t pos, void __user *dst, snd_pcm_uframes_t count)
1930 {
1931 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1932 	char *channel_buf;
1933 
1934 	if (snd_BUG_ON(pos + count > RME9652_CHANNEL_BUFFER_BYTES / 4))
1935 		return -EINVAL;
1936 
1937 	channel_buf = rme9652_channel_buffer_location (rme9652,
1938 						       substream->pstr->stream,
1939 						       channel);
1940 	if (snd_BUG_ON(!channel_buf))
1941 		return -EIO;
1942 	if (copy_to_user(dst, channel_buf + pos * 4, count * 4))
1943 		return -EFAULT;
1944 	return count;
1945 }
1946 
1947 static int snd_rme9652_hw_silence(struct snd_pcm_substream *substream, int channel,
1948 				  snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
1949 {
1950 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1951 	char *channel_buf;
1952 
1953 	channel_buf = rme9652_channel_buffer_location (rme9652,
1954 						       substream->pstr->stream,
1955 						       channel);
1956 	if (snd_BUG_ON(!channel_buf))
1957 		return -EIO;
1958 	memset(channel_buf + pos * 4, 0, count * 4);
1959 	return count;
1960 }
1961 
1962 static int snd_rme9652_reset(struct snd_pcm_substream *substream)
1963 {
1964 	struct snd_pcm_runtime *runtime = substream->runtime;
1965 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1966 	struct snd_pcm_substream *other;
1967 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1968 		other = rme9652->capture_substream;
1969 	else
1970 		other = rme9652->playback_substream;
1971 	if (rme9652->running)
1972 		runtime->status->hw_ptr = rme9652_hw_pointer(rme9652);
1973 	else
1974 		runtime->status->hw_ptr = 0;
1975 	if (other) {
1976 		struct snd_pcm_substream *s;
1977 		struct snd_pcm_runtime *oruntime = other->runtime;
1978 		snd_pcm_group_for_each_entry(s, substream) {
1979 			if (s == other) {
1980 				oruntime->status->hw_ptr = runtime->status->hw_ptr;
1981 				break;
1982 			}
1983 		}
1984 	}
1985 	return 0;
1986 }
1987 
1988 static int snd_rme9652_hw_params(struct snd_pcm_substream *substream,
1989 				 struct snd_pcm_hw_params *params)
1990 {
1991 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1992 	int err;
1993 	pid_t this_pid;
1994 	pid_t other_pid;
1995 
1996 	spin_lock_irq(&rme9652->lock);
1997 
1998 	if (substream->pstr->stream == SNDRV_PCM_STREAM_PLAYBACK) {
1999 		rme9652->control_register &= ~(RME9652_PRO | RME9652_Dolby | RME9652_EMP);
2000 		rme9652_write(rme9652, RME9652_control_register, rme9652->control_register |= rme9652->creg_spdif_stream);
2001 		this_pid = rme9652->playback_pid;
2002 		other_pid = rme9652->capture_pid;
2003 	} else {
2004 		this_pid = rme9652->capture_pid;
2005 		other_pid = rme9652->playback_pid;
2006 	}
2007 
2008 	if ((other_pid > 0) && (this_pid != other_pid)) {
2009 
2010 		/* The other stream is open, and not by the same
2011 		   task as this one. Make sure that the parameters
2012 		   that matter are the same.
2013 		 */
2014 
2015 		if ((int)params_rate(params) !=
2016 		    rme9652_adat_sample_rate(rme9652)) {
2017 			spin_unlock_irq(&rme9652->lock);
2018 			_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
2019 			return -EBUSY;
2020 		}
2021 
2022 		if (params_period_size(params) != rme9652->period_bytes / 4) {
2023 			spin_unlock_irq(&rme9652->lock);
2024 			_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
2025 			return -EBUSY;
2026 		}
2027 
2028 		/* We're fine. */
2029 
2030 		spin_unlock_irq(&rme9652->lock);
2031  		return 0;
2032 
2033 	} else {
2034 		spin_unlock_irq(&rme9652->lock);
2035 	}
2036 
2037 	/* how to make sure that the rate matches an externally-set one ?
2038 	 */
2039 
2040 	if ((err = rme9652_set_rate(rme9652, params_rate(params))) < 0) {
2041 		_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
2042 		return err;
2043 	}
2044 
2045 	if ((err = rme9652_set_interrupt_interval(rme9652, params_period_size(params))) < 0) {
2046 		_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
2047 		return err;
2048 	}
2049 
2050 	return 0;
2051 }
2052 
2053 static int snd_rme9652_channel_info(struct snd_pcm_substream *substream,
2054 				    struct snd_pcm_channel_info *info)
2055 {
2056 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2057 	int chn;
2058 
2059 	if (snd_BUG_ON(info->channel >= RME9652_NCHANNELS))
2060 		return -EINVAL;
2061 
2062 	if ((chn = rme9652->channel_map[info->channel]) < 0) {
2063 		return -EINVAL;
2064 	}
2065 
2066 	info->offset = chn * RME9652_CHANNEL_BUFFER_BYTES;
2067 	info->first = 0;
2068 	info->step = 32;
2069 	return 0;
2070 }
2071 
2072 static int snd_rme9652_ioctl(struct snd_pcm_substream *substream,
2073 			     unsigned int cmd, void *arg)
2074 {
2075 	switch (cmd) {
2076 	case SNDRV_PCM_IOCTL1_RESET:
2077 	{
2078 		return snd_rme9652_reset(substream);
2079 	}
2080 	case SNDRV_PCM_IOCTL1_CHANNEL_INFO:
2081 	{
2082 		struct snd_pcm_channel_info *info = arg;
2083 		return snd_rme9652_channel_info(substream, info);
2084 	}
2085 	default:
2086 		break;
2087 	}
2088 
2089 	return snd_pcm_lib_ioctl(substream, cmd, arg);
2090 }
2091 
2092 static void rme9652_silence_playback(struct snd_rme9652 *rme9652)
2093 {
2094 	memset(rme9652->playback_buffer, 0, RME9652_DMA_AREA_BYTES);
2095 }
2096 
2097 static int snd_rme9652_trigger(struct snd_pcm_substream *substream,
2098 			       int cmd)
2099 {
2100 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2101 	struct snd_pcm_substream *other;
2102 	int running;
2103 	spin_lock(&rme9652->lock);
2104 	running = rme9652->running;
2105 	switch (cmd) {
2106 	case SNDRV_PCM_TRIGGER_START:
2107 		running |= 1 << substream->stream;
2108 		break;
2109 	case SNDRV_PCM_TRIGGER_STOP:
2110 		running &= ~(1 << substream->stream);
2111 		break;
2112 	default:
2113 		snd_BUG();
2114 		spin_unlock(&rme9652->lock);
2115 		return -EINVAL;
2116 	}
2117 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
2118 		other = rme9652->capture_substream;
2119 	else
2120 		other = rme9652->playback_substream;
2121 
2122 	if (other) {
2123 		struct snd_pcm_substream *s;
2124 		snd_pcm_group_for_each_entry(s, substream) {
2125 			if (s == other) {
2126 				snd_pcm_trigger_done(s, substream);
2127 				if (cmd == SNDRV_PCM_TRIGGER_START)
2128 					running |= 1 << s->stream;
2129 				else
2130 					running &= ~(1 << s->stream);
2131 				goto _ok;
2132 			}
2133 		}
2134 		if (cmd == SNDRV_PCM_TRIGGER_START) {
2135 			if (!(running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) &&
2136 			    substream->stream == SNDRV_PCM_STREAM_CAPTURE)
2137 				rme9652_silence_playback(rme9652);
2138 		} else {
2139 			if (running &&
2140 			    substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
2141 				rme9652_silence_playback(rme9652);
2142 		}
2143 	} else {
2144 		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
2145 			rme9652_silence_playback(rme9652);
2146 	}
2147  _ok:
2148 	snd_pcm_trigger_done(substream, substream);
2149 	if (!rme9652->running && running)
2150 		rme9652_start(rme9652);
2151 	else if (rme9652->running && !running)
2152 		rme9652_stop(rme9652);
2153 	rme9652->running = running;
2154 	spin_unlock(&rme9652->lock);
2155 
2156 	return 0;
2157 }
2158 
2159 static int snd_rme9652_prepare(struct snd_pcm_substream *substream)
2160 {
2161 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2162 	unsigned long flags;
2163 	int result = 0;
2164 
2165 	spin_lock_irqsave(&rme9652->lock, flags);
2166 	if (!rme9652->running)
2167 		rme9652_reset_hw_pointer(rme9652);
2168 	spin_unlock_irqrestore(&rme9652->lock, flags);
2169 	return result;
2170 }
2171 
2172 static struct snd_pcm_hardware snd_rme9652_playback_subinfo =
2173 {
2174 	.info =			(SNDRV_PCM_INFO_MMAP |
2175 				 SNDRV_PCM_INFO_MMAP_VALID |
2176 				 SNDRV_PCM_INFO_NONINTERLEAVED |
2177 				 SNDRV_PCM_INFO_SYNC_START |
2178 				 SNDRV_PCM_INFO_DOUBLE),
2179 	.formats =		SNDRV_PCM_FMTBIT_S32_LE,
2180 	.rates =		(SNDRV_PCM_RATE_44100 |
2181 				 SNDRV_PCM_RATE_48000 |
2182 				 SNDRV_PCM_RATE_88200 |
2183 				 SNDRV_PCM_RATE_96000),
2184 	.rate_min =		44100,
2185 	.rate_max =		96000,
2186 	.channels_min =		10,
2187 	.channels_max =		26,
2188 	.buffer_bytes_max =	RME9652_CHANNEL_BUFFER_BYTES * 26,
2189 	.period_bytes_min =	(64 * 4) * 10,
2190 	.period_bytes_max =	(8192 * 4) * 26,
2191 	.periods_min =		2,
2192 	.periods_max =		2,
2193 	.fifo_size =		0,
2194 };
2195 
2196 static struct snd_pcm_hardware snd_rme9652_capture_subinfo =
2197 {
2198 	.info =			(SNDRV_PCM_INFO_MMAP |
2199 				 SNDRV_PCM_INFO_MMAP_VALID |
2200 				 SNDRV_PCM_INFO_NONINTERLEAVED |
2201 				 SNDRV_PCM_INFO_SYNC_START),
2202 	.formats =		SNDRV_PCM_FMTBIT_S32_LE,
2203 	.rates =		(SNDRV_PCM_RATE_44100 |
2204 				 SNDRV_PCM_RATE_48000 |
2205 				 SNDRV_PCM_RATE_88200 |
2206 				 SNDRV_PCM_RATE_96000),
2207 	.rate_min =		44100,
2208 	.rate_max =		96000,
2209 	.channels_min =		10,
2210 	.channels_max =		26,
2211 	.buffer_bytes_max =	RME9652_CHANNEL_BUFFER_BYTES *26,
2212 	.period_bytes_min =	(64 * 4) * 10,
2213 	.period_bytes_max =	(8192 * 4) * 26,
2214 	.periods_min =		2,
2215 	.periods_max =		2,
2216 	.fifo_size =		0,
2217 };
2218 
2219 static unsigned int period_sizes[] = { 64, 128, 256, 512, 1024, 2048, 4096, 8192 };
2220 
2221 static struct snd_pcm_hw_constraint_list hw_constraints_period_sizes = {
2222 	.count = ARRAY_SIZE(period_sizes),
2223 	.list = period_sizes,
2224 	.mask = 0
2225 };
2226 
2227 static int snd_rme9652_hw_rule_channels(struct snd_pcm_hw_params *params,
2228 					struct snd_pcm_hw_rule *rule)
2229 {
2230 	struct snd_rme9652 *rme9652 = rule->private;
2231 	struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
2232 	unsigned int list[2] = { rme9652->ds_channels, rme9652->ss_channels };
2233 	return snd_interval_list(c, 2, list, 0);
2234 }
2235 
2236 static int snd_rme9652_hw_rule_channels_rate(struct snd_pcm_hw_params *params,
2237 					     struct snd_pcm_hw_rule *rule)
2238 {
2239 	struct snd_rme9652 *rme9652 = rule->private;
2240 	struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
2241 	struct snd_interval *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
2242 	if (r->min > 48000) {
2243 		struct snd_interval t = {
2244 			.min = rme9652->ds_channels,
2245 			.max = rme9652->ds_channels,
2246 			.integer = 1,
2247 		};
2248 		return snd_interval_refine(c, &t);
2249 	} else if (r->max < 88200) {
2250 		struct snd_interval t = {
2251 			.min = rme9652->ss_channels,
2252 			.max = rme9652->ss_channels,
2253 			.integer = 1,
2254 		};
2255 		return snd_interval_refine(c, &t);
2256 	}
2257 	return 0;
2258 }
2259 
2260 static int snd_rme9652_hw_rule_rate_channels(struct snd_pcm_hw_params *params,
2261 					     struct snd_pcm_hw_rule *rule)
2262 {
2263 	struct snd_rme9652 *rme9652 = rule->private;
2264 	struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
2265 	struct snd_interval *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
2266 	if (c->min >= rme9652->ss_channels) {
2267 		struct snd_interval t = {
2268 			.min = 44100,
2269 			.max = 48000,
2270 			.integer = 1,
2271 		};
2272 		return snd_interval_refine(r, &t);
2273 	} else if (c->max <= rme9652->ds_channels) {
2274 		struct snd_interval t = {
2275 			.min = 88200,
2276 			.max = 96000,
2277 			.integer = 1,
2278 		};
2279 		return snd_interval_refine(r, &t);
2280 	}
2281 	return 0;
2282 }
2283 
2284 static int snd_rme9652_playback_open(struct snd_pcm_substream *substream)
2285 {
2286 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2287 	struct snd_pcm_runtime *runtime = substream->runtime;
2288 
2289 	spin_lock_irq(&rme9652->lock);
2290 
2291 	snd_pcm_set_sync(substream);
2292 
2293         runtime->hw = snd_rme9652_playback_subinfo;
2294 	runtime->dma_area = rme9652->playback_buffer;
2295 	runtime->dma_bytes = RME9652_DMA_AREA_BYTES;
2296 
2297 	if (rme9652->capture_substream == NULL) {
2298 		rme9652_stop(rme9652);
2299 		rme9652_set_thru(rme9652, -1, 0);
2300 	}
2301 
2302 	rme9652->playback_pid = current->pid;
2303 	rme9652->playback_substream = substream;
2304 
2305 	spin_unlock_irq(&rme9652->lock);
2306 
2307 	snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
2308 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_period_sizes);
2309 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
2310 			     snd_rme9652_hw_rule_channels, rme9652,
2311 			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
2312 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
2313 			     snd_rme9652_hw_rule_channels_rate, rme9652,
2314 			     SNDRV_PCM_HW_PARAM_RATE, -1);
2315 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
2316 			     snd_rme9652_hw_rule_rate_channels, rme9652,
2317 			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
2318 
2319 	rme9652->creg_spdif_stream = rme9652->creg_spdif;
2320 	rme9652->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2321 	snd_ctl_notify(rme9652->card, SNDRV_CTL_EVENT_MASK_VALUE |
2322 		       SNDRV_CTL_EVENT_MASK_INFO, &rme9652->spdif_ctl->id);
2323 	return 0;
2324 }
2325 
2326 static int snd_rme9652_playback_release(struct snd_pcm_substream *substream)
2327 {
2328 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2329 
2330 	spin_lock_irq(&rme9652->lock);
2331 
2332 	rme9652->playback_pid = -1;
2333 	rme9652->playback_substream = NULL;
2334 
2335 	spin_unlock_irq(&rme9652->lock);
2336 
2337 	rme9652->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2338 	snd_ctl_notify(rme9652->card, SNDRV_CTL_EVENT_MASK_VALUE |
2339 		       SNDRV_CTL_EVENT_MASK_INFO, &rme9652->spdif_ctl->id);
2340 	return 0;
2341 }
2342 
2343 
2344 static int snd_rme9652_capture_open(struct snd_pcm_substream *substream)
2345 {
2346 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2347 	struct snd_pcm_runtime *runtime = substream->runtime;
2348 
2349 	spin_lock_irq(&rme9652->lock);
2350 
2351 	snd_pcm_set_sync(substream);
2352 
2353 	runtime->hw = snd_rme9652_capture_subinfo;
2354 	runtime->dma_area = rme9652->capture_buffer;
2355 	runtime->dma_bytes = RME9652_DMA_AREA_BYTES;
2356 
2357 	if (rme9652->playback_substream == NULL) {
2358 		rme9652_stop(rme9652);
2359 		rme9652_set_thru(rme9652, -1, 0);
2360 	}
2361 
2362 	rme9652->capture_pid = current->pid;
2363 	rme9652->capture_substream = substream;
2364 
2365 	spin_unlock_irq(&rme9652->lock);
2366 
2367 	snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
2368 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_period_sizes);
2369 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
2370 			     snd_rme9652_hw_rule_channels, rme9652,
2371 			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
2372 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
2373 			     snd_rme9652_hw_rule_channels_rate, rme9652,
2374 			     SNDRV_PCM_HW_PARAM_RATE, -1);
2375 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
2376 			     snd_rme9652_hw_rule_rate_channels, rme9652,
2377 			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
2378 	return 0;
2379 }
2380 
2381 static int snd_rme9652_capture_release(struct snd_pcm_substream *substream)
2382 {
2383 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2384 
2385 	spin_lock_irq(&rme9652->lock);
2386 
2387 	rme9652->capture_pid = -1;
2388 	rme9652->capture_substream = NULL;
2389 
2390 	spin_unlock_irq(&rme9652->lock);
2391 	return 0;
2392 }
2393 
2394 static struct snd_pcm_ops snd_rme9652_playback_ops = {
2395 	.open =		snd_rme9652_playback_open,
2396 	.close =	snd_rme9652_playback_release,
2397 	.ioctl =	snd_rme9652_ioctl,
2398 	.hw_params =	snd_rme9652_hw_params,
2399 	.prepare =	snd_rme9652_prepare,
2400 	.trigger =	snd_rme9652_trigger,
2401 	.pointer =	snd_rme9652_hw_pointer,
2402 	.copy =		snd_rme9652_playback_copy,
2403 	.silence =	snd_rme9652_hw_silence,
2404 };
2405 
2406 static struct snd_pcm_ops snd_rme9652_capture_ops = {
2407 	.open =		snd_rme9652_capture_open,
2408 	.close =	snd_rme9652_capture_release,
2409 	.ioctl =	snd_rme9652_ioctl,
2410 	.hw_params =	snd_rme9652_hw_params,
2411 	.prepare =	snd_rme9652_prepare,
2412 	.trigger =	snd_rme9652_trigger,
2413 	.pointer =	snd_rme9652_hw_pointer,
2414 	.copy =		snd_rme9652_capture_copy,
2415 };
2416 
2417 static int snd_rme9652_create_pcm(struct snd_card *card,
2418 				  struct snd_rme9652 *rme9652)
2419 {
2420 	struct snd_pcm *pcm;
2421 	int err;
2422 
2423 	if ((err = snd_pcm_new(card,
2424 			       rme9652->card_name,
2425 			       0, 1, 1, &pcm)) < 0) {
2426 		return err;
2427 	}
2428 
2429 	rme9652->pcm = pcm;
2430 	pcm->private_data = rme9652;
2431 	strcpy(pcm->name, rme9652->card_name);
2432 
2433 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme9652_playback_ops);
2434 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme9652_capture_ops);
2435 
2436 	pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
2437 
2438 	return 0;
2439 }
2440 
2441 static int snd_rme9652_create(struct snd_card *card,
2442 			      struct snd_rme9652 *rme9652,
2443 			      int precise_ptr)
2444 {
2445 	struct pci_dev *pci = rme9652->pci;
2446 	int err;
2447 	int status;
2448 	unsigned short rev;
2449 
2450 	rme9652->irq = -1;
2451 	rme9652->card = card;
2452 
2453 	pci_read_config_word(rme9652->pci, PCI_CLASS_REVISION, &rev);
2454 
2455 	switch (rev & 0xff) {
2456 	case 3:
2457 	case 4:
2458 	case 8:
2459 	case 9:
2460 		break;
2461 
2462 	default:
2463 		/* who knows? */
2464 		return -ENODEV;
2465 	}
2466 
2467 	if ((err = pci_enable_device(pci)) < 0)
2468 		return err;
2469 
2470 	spin_lock_init(&rme9652->lock);
2471 
2472 	if ((err = pci_request_regions(pci, "rme9652")) < 0)
2473 		return err;
2474 	rme9652->port = pci_resource_start(pci, 0);
2475 	rme9652->iobase = ioremap_nocache(rme9652->port, RME9652_IO_EXTENT);
2476 	if (rme9652->iobase == NULL) {
2477 		dev_err(card->dev, "unable to remap region 0x%lx-0x%lx\n",
2478 			rme9652->port, rme9652->port + RME9652_IO_EXTENT - 1);
2479 		return -EBUSY;
2480 	}
2481 
2482 	if (request_irq(pci->irq, snd_rme9652_interrupt, IRQF_SHARED,
2483 			KBUILD_MODNAME, rme9652)) {
2484 		dev_err(card->dev, "unable to request IRQ %d\n", pci->irq);
2485 		return -EBUSY;
2486 	}
2487 	rme9652->irq = pci->irq;
2488 	rme9652->precise_ptr = precise_ptr;
2489 
2490 	/* Determine the h/w rev level of the card. This seems like
2491 	   a particularly kludgy way to encode it, but its what RME
2492 	   chose to do, so we follow them ...
2493 	*/
2494 
2495 	status = rme9652_read(rme9652, RME9652_status_register);
2496 	if (rme9652_decode_spdif_rate(status&RME9652_F) == 1) {
2497 		rme9652->hw_rev = 15;
2498 	} else {
2499 		rme9652->hw_rev = 11;
2500 	}
2501 
2502 	/* Differentiate between the standard Hammerfall, and the
2503 	   "Light", which does not have the expansion board. This
2504 	   method comes from information received from Mathhias
2505 	   Clausen at RME. Display the EEPROM and h/w revID where
2506 	   relevant.
2507 	*/
2508 
2509 	switch (rev) {
2510 	case 8: /* original eprom */
2511 		strcpy(card->driver, "RME9636");
2512 		if (rme9652->hw_rev == 15) {
2513 			rme9652->card_name = "RME Digi9636 (Rev 1.5)";
2514 		} else {
2515 			rme9652->card_name = "RME Digi9636";
2516 		}
2517 		rme9652->ss_channels = RME9636_NCHANNELS;
2518 		break;
2519 	case 9: /* W36_G EPROM */
2520 		strcpy(card->driver, "RME9636");
2521 		rme9652->card_name = "RME Digi9636 (Rev G)";
2522 		rme9652->ss_channels = RME9636_NCHANNELS;
2523 		break;
2524 	case 4: /* W52_G EPROM */
2525 		strcpy(card->driver, "RME9652");
2526 		rme9652->card_name = "RME Digi9652 (Rev G)";
2527 		rme9652->ss_channels = RME9652_NCHANNELS;
2528 		break;
2529 	case 3: /* original eprom */
2530 		strcpy(card->driver, "RME9652");
2531 		if (rme9652->hw_rev == 15) {
2532 			rme9652->card_name = "RME Digi9652 (Rev 1.5)";
2533 		} else {
2534 			rme9652->card_name = "RME Digi9652";
2535 		}
2536 		rme9652->ss_channels = RME9652_NCHANNELS;
2537 		break;
2538 	}
2539 
2540 	rme9652->ds_channels = (rme9652->ss_channels - 2) / 2 + 2;
2541 
2542 	pci_set_master(rme9652->pci);
2543 
2544 	if ((err = snd_rme9652_initialize_memory(rme9652)) < 0) {
2545 		return err;
2546 	}
2547 
2548 	if ((err = snd_rme9652_create_pcm(card, rme9652)) < 0) {
2549 		return err;
2550 	}
2551 
2552 	if ((err = snd_rme9652_create_controls(card, rme9652)) < 0) {
2553 		return err;
2554 	}
2555 
2556 	snd_rme9652_proc_init(rme9652);
2557 
2558 	rme9652->last_spdif_sample_rate = -1;
2559 	rme9652->last_adat_sample_rate = -1;
2560 	rme9652->playback_pid = -1;
2561 	rme9652->capture_pid = -1;
2562 	rme9652->capture_substream = NULL;
2563 	rme9652->playback_substream = NULL;
2564 
2565 	snd_rme9652_set_defaults(rme9652);
2566 
2567 	if (rme9652->hw_rev == 15) {
2568 		rme9652_initialize_spdif_receiver (rme9652);
2569 	}
2570 
2571 	return 0;
2572 }
2573 
2574 static void snd_rme9652_card_free(struct snd_card *card)
2575 {
2576 	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) card->private_data;
2577 
2578 	if (rme9652)
2579 		snd_rme9652_free(rme9652);
2580 }
2581 
2582 static int snd_rme9652_probe(struct pci_dev *pci,
2583 			     const struct pci_device_id *pci_id)
2584 {
2585 	static int dev;
2586 	struct snd_rme9652 *rme9652;
2587 	struct snd_card *card;
2588 	int err;
2589 
2590 	if (dev >= SNDRV_CARDS)
2591 		return -ENODEV;
2592 	if (!enable[dev]) {
2593 		dev++;
2594 		return -ENOENT;
2595 	}
2596 
2597 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2598 			   sizeof(struct snd_rme9652), &card);
2599 
2600 	if (err < 0)
2601 		return err;
2602 
2603 	rme9652 = (struct snd_rme9652 *) card->private_data;
2604 	card->private_free = snd_rme9652_card_free;
2605 	rme9652->dev = dev;
2606 	rme9652->pci = pci;
2607 
2608 	if ((err = snd_rme9652_create(card, rme9652, precise_ptr[dev])) < 0) {
2609 		snd_card_free(card);
2610 		return err;
2611 	}
2612 
2613 	strcpy(card->shortname, rme9652->card_name);
2614 
2615 	sprintf(card->longname, "%s at 0x%lx, irq %d",
2616 		card->shortname, rme9652->port, rme9652->irq);
2617 
2618 
2619 	if ((err = snd_card_register(card)) < 0) {
2620 		snd_card_free(card);
2621 		return err;
2622 	}
2623 	pci_set_drvdata(pci, card);
2624 	dev++;
2625 	return 0;
2626 }
2627 
2628 static void snd_rme9652_remove(struct pci_dev *pci)
2629 {
2630 	snd_card_free(pci_get_drvdata(pci));
2631 }
2632 
2633 static struct pci_driver rme9652_driver = {
2634 	.name	  = KBUILD_MODNAME,
2635 	.id_table = snd_rme9652_ids,
2636 	.probe	  = snd_rme9652_probe,
2637 	.remove	  = snd_rme9652_remove,
2638 };
2639 
2640 module_pci_driver(rme9652_driver);
2641