xref: /openbmc/linux/sound/pci/rme9652/rme9652.c (revision bf5bbed1)
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_get_reserved_buf(dmab, snd_dma_pci_buf_id(pci))) {
298 		if (dmab->bytes >= size)
299 			return 0;
300 	}
301 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
302 				size, dmab) < 0)
303 		return -ENOMEM;
304 	return 0;
305 }
306 
307 static void snd_hammerfall_free_buffer(struct snd_dma_buffer *dmab, struct pci_dev *pci)
308 {
309 	if (dmab->area) {
310 		dmab->dev.dev = NULL; /* make it anonymous */
311 		snd_dma_reserve_buf(dmab, snd_dma_pci_buf_id(pci));
312 	}
313 }
314 
315 
316 static DEFINE_PCI_DEVICE_TABLE(snd_rme9652_ids) = {
317 	{
318 		.vendor	   = 0x10ee,
319 		.device	   = 0x3fc4,
320 		.subvendor = PCI_ANY_ID,
321 		.subdevice = PCI_ANY_ID,
322 	},	/* RME Digi9652 */
323 	{ 0, },
324 };
325 
326 MODULE_DEVICE_TABLE(pci, snd_rme9652_ids);
327 
328 static inline void rme9652_write(struct snd_rme9652 *rme9652, int reg, int val)
329 {
330 	writel(val, rme9652->iobase + reg);
331 }
332 
333 static inline unsigned int rme9652_read(struct snd_rme9652 *rme9652, int reg)
334 {
335 	return readl(rme9652->iobase + reg);
336 }
337 
338 static inline int snd_rme9652_use_is_exclusive(struct snd_rme9652 *rme9652)
339 {
340 	unsigned long flags;
341 	int ret = 1;
342 
343 	spin_lock_irqsave(&rme9652->lock, flags);
344 	if ((rme9652->playback_pid != rme9652->capture_pid) &&
345 	    (rme9652->playback_pid >= 0) && (rme9652->capture_pid >= 0)) {
346 		ret = 0;
347 	}
348 	spin_unlock_irqrestore(&rme9652->lock, flags);
349 	return ret;
350 }
351 
352 static inline int rme9652_adat_sample_rate(struct snd_rme9652 *rme9652)
353 {
354 	if (rme9652_running_double_speed(rme9652)) {
355 		return (rme9652_read(rme9652, RME9652_status_register) &
356 			RME9652_fs48) ? 96000 : 88200;
357 	} else {
358 		return (rme9652_read(rme9652, RME9652_status_register) &
359 			RME9652_fs48) ? 48000 : 44100;
360 	}
361 }
362 
363 static inline void rme9652_compute_period_size(struct snd_rme9652 *rme9652)
364 {
365 	unsigned int i;
366 
367 	i = rme9652->control_register & RME9652_latency;
368 	rme9652->period_bytes = 1 << ((rme9652_decode_latency(i) + 8));
369 	rme9652->hw_offsetmask =
370 		(rme9652->period_bytes * 2 - 1) & RME9652_buf_pos;
371 	rme9652->max_jitter = 80;
372 }
373 
374 static snd_pcm_uframes_t rme9652_hw_pointer(struct snd_rme9652 *rme9652)
375 {
376 	int status;
377 	unsigned int offset, frag;
378 	snd_pcm_uframes_t period_size = rme9652->period_bytes / 4;
379 	snd_pcm_sframes_t delta;
380 
381 	status = rme9652_read(rme9652, RME9652_status_register);
382 	if (!rme9652->precise_ptr)
383 		return (status & RME9652_buffer_id) ? period_size : 0;
384 	offset = status & RME9652_buf_pos;
385 
386 	/* The hardware may give a backward movement for up to 80 frames
387            Martin Kirst <martin.kirst@freenet.de> knows the details.
388 	*/
389 
390 	delta = rme9652->prev_hw_offset - offset;
391 	delta &= 0xffff;
392 	if (delta <= (snd_pcm_sframes_t)rme9652->max_jitter * 4)
393 		offset = rme9652->prev_hw_offset;
394 	else
395 		rme9652->prev_hw_offset = offset;
396 	offset &= rme9652->hw_offsetmask;
397 	offset /= 4;
398 	frag = status & RME9652_buffer_id;
399 
400 	if (offset < period_size) {
401 		if (offset > rme9652->max_jitter) {
402 			if (frag)
403 				printk(KERN_ERR "Unexpected hw_pointer position (bufid == 0): status: %x offset: %d\n", status, offset);
404 		} else if (!frag)
405 			return 0;
406 		offset -= rme9652->max_jitter;
407 		if ((int)offset < 0)
408 			offset += period_size * 2;
409 	} else {
410 		if (offset > period_size + rme9652->max_jitter) {
411 			if (!frag)
412 				printk(KERN_ERR "Unexpected hw_pointer position (bufid == 1): status: %x offset: %d\n", status, offset);
413 		} else if (frag)
414 			return period_size;
415 		offset -= rme9652->max_jitter;
416 	}
417 
418 	return offset;
419 }
420 
421 static inline void rme9652_reset_hw_pointer(struct snd_rme9652 *rme9652)
422 {
423 	int i;
424 
425 	/* reset the FIFO pointer to zero. We do this by writing to 8
426 	   registers, each of which is a 32bit wide register, and set
427 	   them all to zero. Note that s->iobase is a pointer to
428 	   int32, not pointer to char.
429 	*/
430 
431 	for (i = 0; i < 8; i++) {
432 		rme9652_write(rme9652, i * 4, 0);
433 		udelay(10);
434 	}
435 	rme9652->prev_hw_offset = 0;
436 }
437 
438 static inline void rme9652_start(struct snd_rme9652 *s)
439 {
440 	s->control_register |= (RME9652_IE | RME9652_start_bit);
441 	rme9652_write(s, RME9652_control_register, s->control_register);
442 }
443 
444 static inline void rme9652_stop(struct snd_rme9652 *s)
445 {
446 	s->control_register &= ~(RME9652_start_bit | RME9652_IE);
447 	rme9652_write(s, RME9652_control_register, s->control_register);
448 }
449 
450 static int rme9652_set_interrupt_interval(struct snd_rme9652 *s,
451 					  unsigned int frames)
452 {
453 	int restart = 0;
454 	int n;
455 
456 	spin_lock_irq(&s->lock);
457 
458 	if ((restart = s->running)) {
459 		rme9652_stop(s);
460 	}
461 
462 	frames >>= 7;
463 	n = 0;
464 	while (frames) {
465 		n++;
466 		frames >>= 1;
467 	}
468 
469 	s->control_register &= ~RME9652_latency;
470 	s->control_register |= rme9652_encode_latency(n);
471 
472 	rme9652_write(s, RME9652_control_register, s->control_register);
473 
474 	rme9652_compute_period_size(s);
475 
476 	if (restart)
477 		rme9652_start(s);
478 
479 	spin_unlock_irq(&s->lock);
480 
481 	return 0;
482 }
483 
484 static int rme9652_set_rate(struct snd_rme9652 *rme9652, int rate)
485 {
486 	int restart;
487 	int reject_if_open = 0;
488 	int xrate;
489 
490 	if (!snd_rme9652_use_is_exclusive (rme9652)) {
491 		return -EBUSY;
492 	}
493 
494 	/* Changing from a "single speed" to a "double speed" rate is
495 	   not allowed if any substreams are open. This is because
496 	   such a change causes a shift in the location of
497 	   the DMA buffers and a reduction in the number of available
498 	   buffers.
499 
500 	   Note that a similar but essentially insoluble problem
501 	   exists for externally-driven rate changes. All we can do
502 	   is to flag rate changes in the read/write routines.
503 	 */
504 
505 	spin_lock_irq(&rme9652->lock);
506 	xrate = rme9652_adat_sample_rate(rme9652);
507 
508 	switch (rate) {
509 	case 44100:
510 		if (xrate > 48000) {
511 			reject_if_open = 1;
512 		}
513 		rate = 0;
514 		break;
515 	case 48000:
516 		if (xrate > 48000) {
517 			reject_if_open = 1;
518 		}
519 		rate = RME9652_freq;
520 		break;
521 	case 88200:
522 		if (xrate < 48000) {
523 			reject_if_open = 1;
524 		}
525 		rate = RME9652_DS;
526 		break;
527 	case 96000:
528 		if (xrate < 48000) {
529 			reject_if_open = 1;
530 		}
531 		rate = RME9652_DS | RME9652_freq;
532 		break;
533 	default:
534 		spin_unlock_irq(&rme9652->lock);
535 		return -EINVAL;
536 	}
537 
538 	if (reject_if_open && (rme9652->capture_pid >= 0 || rme9652->playback_pid >= 0)) {
539 		spin_unlock_irq(&rme9652->lock);
540 		return -EBUSY;
541 	}
542 
543 	if ((restart = rme9652->running)) {
544 		rme9652_stop(rme9652);
545 	}
546 	rme9652->control_register &= ~(RME9652_freq | RME9652_DS);
547 	rme9652->control_register |= rate;
548 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
549 
550 	if (restart) {
551 		rme9652_start(rme9652);
552 	}
553 
554 	if (rate & RME9652_DS) {
555 		if (rme9652->ss_channels == RME9652_NCHANNELS) {
556 			rme9652->channel_map = channel_map_9652_ds;
557 		} else {
558 			rme9652->channel_map = channel_map_9636_ds;
559 		}
560 	} else {
561 		if (rme9652->ss_channels == RME9652_NCHANNELS) {
562 			rme9652->channel_map = channel_map_9652_ss;
563 		} else {
564 			rme9652->channel_map = channel_map_9636_ss;
565 		}
566 	}
567 
568 	spin_unlock_irq(&rme9652->lock);
569 	return 0;
570 }
571 
572 static void rme9652_set_thru(struct snd_rme9652 *rme9652, int channel, int enable)
573 {
574 	int i;
575 
576 	rme9652->passthru = 0;
577 
578 	if (channel < 0) {
579 
580 		/* set thru for all channels */
581 
582 		if (enable) {
583 			for (i = 0; i < RME9652_NCHANNELS; i++) {
584 				rme9652->thru_bits |= (1 << i);
585 				rme9652_write(rme9652, RME9652_thru_base + i * 4, 1);
586 			}
587 		} else {
588 			for (i = 0; i < RME9652_NCHANNELS; i++) {
589 				rme9652->thru_bits &= ~(1 << i);
590 				rme9652_write(rme9652, RME9652_thru_base + i * 4, 0);
591 			}
592 		}
593 
594 	} else {
595 		int mapped_channel;
596 
597 		mapped_channel = rme9652->channel_map[channel];
598 
599 		if (enable) {
600 			rme9652->thru_bits |= (1 << mapped_channel);
601 		} else {
602 			rme9652->thru_bits &= ~(1 << mapped_channel);
603 		}
604 
605 		rme9652_write(rme9652,
606 			       RME9652_thru_base + mapped_channel * 4,
607 			       enable ? 1 : 0);
608 	}
609 }
610 
611 static int rme9652_set_passthru(struct snd_rme9652 *rme9652, int onoff)
612 {
613 	if (onoff) {
614 		rme9652_set_thru(rme9652, -1, 1);
615 
616 		/* we don't want interrupts, so do a
617 		   custom version of rme9652_start().
618 		*/
619 
620 		rme9652->control_register =
621 			RME9652_inp_0 |
622 			rme9652_encode_latency(7) |
623 			RME9652_start_bit;
624 
625 		rme9652_reset_hw_pointer(rme9652);
626 
627 		rme9652_write(rme9652, RME9652_control_register,
628 			      rme9652->control_register);
629 		rme9652->passthru = 1;
630 	} else {
631 		rme9652_set_thru(rme9652, -1, 0);
632 		rme9652_stop(rme9652);
633 		rme9652->passthru = 0;
634 	}
635 
636 	return 0;
637 }
638 
639 static void rme9652_spdif_set_bit (struct snd_rme9652 *rme9652, int mask, int onoff)
640 {
641 	if (onoff)
642 		rme9652->control_register |= mask;
643 	else
644 		rme9652->control_register &= ~mask;
645 
646 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
647 }
648 
649 static void rme9652_spdif_write_byte (struct snd_rme9652 *rme9652, const int val)
650 {
651 	long mask;
652 	long i;
653 
654 	for (i = 0, mask = 0x80; i < 8; i++, mask >>= 1) {
655 		if (val & mask)
656 			rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_WRITE, 1);
657 		else
658 			rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_WRITE, 0);
659 
660 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 1);
661 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 0);
662 	}
663 }
664 
665 static int rme9652_spdif_read_byte (struct snd_rme9652 *rme9652)
666 {
667 	long mask;
668 	long val;
669 	long i;
670 
671 	val = 0;
672 
673 	for (i = 0, mask = 0x80;  i < 8; i++, mask >>= 1) {
674 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 1);
675 		if (rme9652_read (rme9652, RME9652_status_register) & RME9652_SPDIF_READ)
676 			val |= mask;
677 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 0);
678 	}
679 
680 	return val;
681 }
682 
683 static void rme9652_write_spdif_codec (struct snd_rme9652 *rme9652, const int address, const int data)
684 {
685 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
686 	rme9652_spdif_write_byte (rme9652, 0x20);
687 	rme9652_spdif_write_byte (rme9652, address);
688 	rme9652_spdif_write_byte (rme9652, data);
689 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
690 }
691 
692 
693 static int rme9652_spdif_read_codec (struct snd_rme9652 *rme9652, const int address)
694 {
695 	int ret;
696 
697 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
698 	rme9652_spdif_write_byte (rme9652, 0x20);
699 	rme9652_spdif_write_byte (rme9652, address);
700 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
701 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
702 
703 	rme9652_spdif_write_byte (rme9652, 0x21);
704 	ret = rme9652_spdif_read_byte (rme9652);
705 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
706 
707 	return ret;
708 }
709 
710 static void rme9652_initialize_spdif_receiver (struct snd_rme9652 *rme9652)
711 {
712 	/* XXX what unsets this ? */
713 
714 	rme9652->control_register |= RME9652_SPDIF_RESET;
715 
716 	rme9652_write_spdif_codec (rme9652, 4, 0x40);
717 	rme9652_write_spdif_codec (rme9652, 17, 0x13);
718 	rme9652_write_spdif_codec (rme9652, 6, 0x02);
719 }
720 
721 static inline int rme9652_spdif_sample_rate(struct snd_rme9652 *s)
722 {
723 	unsigned int rate_bits;
724 
725 	if (rme9652_read(s, RME9652_status_register) & RME9652_ERF) {
726 		return -1;	/* error condition */
727 	}
728 
729 	if (s->hw_rev == 15) {
730 
731 		int x, y, ret;
732 
733 		x = rme9652_spdif_read_codec (s, 30);
734 
735 		if (x != 0)
736 			y = 48000 * 64 / x;
737 		else
738 			y = 0;
739 
740 		if      (y > 30400 && y < 33600)  ret = 32000;
741 		else if (y > 41900 && y < 46000)  ret = 44100;
742 		else if (y > 46000 && y < 50400)  ret = 48000;
743 		else if (y > 60800 && y < 67200)  ret = 64000;
744 		else if (y > 83700 && y < 92000)  ret = 88200;
745 		else if (y > 92000 && y < 100000) ret = 96000;
746 		else                              ret = 0;
747 		return ret;
748 	}
749 
750 	rate_bits = rme9652_read(s, RME9652_status_register) & RME9652_F;
751 
752 	switch (rme9652_decode_spdif_rate(rate_bits)) {
753 	case 0x7:
754 		return 32000;
755 		break;
756 
757 	case 0x6:
758 		return 44100;
759 		break;
760 
761 	case 0x5:
762 		return 48000;
763 		break;
764 
765 	case 0x4:
766 		return 88200;
767 		break;
768 
769 	case 0x3:
770 		return 96000;
771 		break;
772 
773 	case 0x0:
774 		return 64000;
775 		break;
776 
777 	default:
778 		snd_printk(KERN_ERR "%s: unknown S/PDIF input rate (bits = 0x%x)\n",
779 			   s->card_name, rate_bits);
780 		return 0;
781 		break;
782 	}
783 }
784 
785 /*-----------------------------------------------------------------------------
786   Control Interface
787   ----------------------------------------------------------------------------*/
788 
789 static u32 snd_rme9652_convert_from_aes(struct snd_aes_iec958 *aes)
790 {
791 	u32 val = 0;
792 	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME9652_PRO : 0;
793 	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME9652_Dolby : 0;
794 	if (val & RME9652_PRO)
795 		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME9652_EMP : 0;
796 	else
797 		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME9652_EMP : 0;
798 	return val;
799 }
800 
801 static void snd_rme9652_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)
802 {
803 	aes->status[0] = ((val & RME9652_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
804 			 ((val & RME9652_Dolby) ? IEC958_AES0_NONAUDIO : 0);
805 	if (val & RME9652_PRO)
806 		aes->status[0] |= (val & RME9652_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
807 	else
808 		aes->status[0] |= (val & RME9652_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
809 }
810 
811 static int snd_rme9652_control_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
812 {
813 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
814 	uinfo->count = 1;
815 	return 0;
816 }
817 
818 static int snd_rme9652_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
819 {
820 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
821 
822 	snd_rme9652_convert_to_aes(&ucontrol->value.iec958, rme9652->creg_spdif);
823 	return 0;
824 }
825 
826 static int snd_rme9652_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
827 {
828 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
829 	int change;
830 	u32 val;
831 
832 	val = snd_rme9652_convert_from_aes(&ucontrol->value.iec958);
833 	spin_lock_irq(&rme9652->lock);
834 	change = val != rme9652->creg_spdif;
835 	rme9652->creg_spdif = val;
836 	spin_unlock_irq(&rme9652->lock);
837 	return change;
838 }
839 
840 static int snd_rme9652_control_spdif_stream_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
841 {
842 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
843 	uinfo->count = 1;
844 	return 0;
845 }
846 
847 static int snd_rme9652_control_spdif_stream_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
848 {
849 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
850 
851 	snd_rme9652_convert_to_aes(&ucontrol->value.iec958, rme9652->creg_spdif_stream);
852 	return 0;
853 }
854 
855 static int snd_rme9652_control_spdif_stream_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
856 {
857 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
858 	int change;
859 	u32 val;
860 
861 	val = snd_rme9652_convert_from_aes(&ucontrol->value.iec958);
862 	spin_lock_irq(&rme9652->lock);
863 	change = val != rme9652->creg_spdif_stream;
864 	rme9652->creg_spdif_stream = val;
865 	rme9652->control_register &= ~(RME9652_PRO | RME9652_Dolby | RME9652_EMP);
866 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register |= val);
867 	spin_unlock_irq(&rme9652->lock);
868 	return change;
869 }
870 
871 static int snd_rme9652_control_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
872 {
873 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
874 	uinfo->count = 1;
875 	return 0;
876 }
877 
878 static int snd_rme9652_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
879 {
880 	ucontrol->value.iec958.status[0] = kcontrol->private_value;
881 	return 0;
882 }
883 
884 #define RME9652_ADAT1_IN(xname, xindex) \
885 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
886   .info = snd_rme9652_info_adat1_in, \
887   .get = snd_rme9652_get_adat1_in, \
888   .put = snd_rme9652_put_adat1_in }
889 
890 static unsigned int rme9652_adat1_in(struct snd_rme9652 *rme9652)
891 {
892 	if (rme9652->control_register & RME9652_ADAT1_INTERNAL)
893 		return 1;
894 	return 0;
895 }
896 
897 static int rme9652_set_adat1_input(struct snd_rme9652 *rme9652, int internal)
898 {
899 	int restart = 0;
900 
901 	if (internal) {
902 		rme9652->control_register |= RME9652_ADAT1_INTERNAL;
903 	} else {
904 		rme9652->control_register &= ~RME9652_ADAT1_INTERNAL;
905 	}
906 
907 	/* XXX do we actually need to stop the card when we do this ? */
908 
909 	if ((restart = rme9652->running)) {
910 		rme9652_stop(rme9652);
911 	}
912 
913 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
914 
915 	if (restart) {
916 		rme9652_start(rme9652);
917 	}
918 
919 	return 0;
920 }
921 
922 static int snd_rme9652_info_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
923 {
924 	static char *texts[2] = {"ADAT1", "Internal"};
925 
926 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
927 	uinfo->count = 1;
928 	uinfo->value.enumerated.items = 2;
929 	if (uinfo->value.enumerated.item > 1)
930 		uinfo->value.enumerated.item = 1;
931 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
932 	return 0;
933 }
934 
935 static int snd_rme9652_get_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
936 {
937 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
938 
939 	spin_lock_irq(&rme9652->lock);
940 	ucontrol->value.enumerated.item[0] = rme9652_adat1_in(rme9652);
941 	spin_unlock_irq(&rme9652->lock);
942 	return 0;
943 }
944 
945 static int snd_rme9652_put_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
946 {
947 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
948 	int change;
949 	unsigned int val;
950 
951 	if (!snd_rme9652_use_is_exclusive(rme9652))
952 		return -EBUSY;
953 	val = ucontrol->value.enumerated.item[0] % 2;
954 	spin_lock_irq(&rme9652->lock);
955 	change = val != rme9652_adat1_in(rme9652);
956 	if (change)
957 		rme9652_set_adat1_input(rme9652, val);
958 	spin_unlock_irq(&rme9652->lock);
959 	return change;
960 }
961 
962 #define RME9652_SPDIF_IN(xname, xindex) \
963 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
964   .info = snd_rme9652_info_spdif_in, \
965   .get = snd_rme9652_get_spdif_in, .put = snd_rme9652_put_spdif_in }
966 
967 static unsigned int rme9652_spdif_in(struct snd_rme9652 *rme9652)
968 {
969 	return rme9652_decode_spdif_in(rme9652->control_register &
970 				       RME9652_inp);
971 }
972 
973 static int rme9652_set_spdif_input(struct snd_rme9652 *rme9652, int in)
974 {
975 	int restart = 0;
976 
977 	rme9652->control_register &= ~RME9652_inp;
978 	rme9652->control_register |= rme9652_encode_spdif_in(in);
979 
980 	if ((restart = rme9652->running)) {
981 		rme9652_stop(rme9652);
982 	}
983 
984 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
985 
986 	if (restart) {
987 		rme9652_start(rme9652);
988 	}
989 
990 	return 0;
991 }
992 
993 static int snd_rme9652_info_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
994 {
995 	static char *texts[3] = {"ADAT1", "Coaxial", "Internal"};
996 
997 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
998 	uinfo->count = 1;
999 	uinfo->value.enumerated.items = 3;
1000 	if (uinfo->value.enumerated.item > 2)
1001 		uinfo->value.enumerated.item = 2;
1002 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1003 	return 0;
1004 }
1005 
1006 static int snd_rme9652_get_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1007 {
1008 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1009 
1010 	spin_lock_irq(&rme9652->lock);
1011 	ucontrol->value.enumerated.item[0] = rme9652_spdif_in(rme9652);
1012 	spin_unlock_irq(&rme9652->lock);
1013 	return 0;
1014 }
1015 
1016 static int snd_rme9652_put_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1017 {
1018 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1019 	int change;
1020 	unsigned int val;
1021 
1022 	if (!snd_rme9652_use_is_exclusive(rme9652))
1023 		return -EBUSY;
1024 	val = ucontrol->value.enumerated.item[0] % 3;
1025 	spin_lock_irq(&rme9652->lock);
1026 	change = val != rme9652_spdif_in(rme9652);
1027 	if (change)
1028 		rme9652_set_spdif_input(rme9652, val);
1029 	spin_unlock_irq(&rme9652->lock);
1030 	return change;
1031 }
1032 
1033 #define RME9652_SPDIF_OUT(xname, xindex) \
1034 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1035   .info = snd_rme9652_info_spdif_out, \
1036   .get = snd_rme9652_get_spdif_out, .put = snd_rme9652_put_spdif_out }
1037 
1038 static int rme9652_spdif_out(struct snd_rme9652 *rme9652)
1039 {
1040 	return (rme9652->control_register & RME9652_opt_out) ? 1 : 0;
1041 }
1042 
1043 static int rme9652_set_spdif_output(struct snd_rme9652 *rme9652, int out)
1044 {
1045 	int restart = 0;
1046 
1047 	if (out) {
1048 		rme9652->control_register |= RME9652_opt_out;
1049 	} else {
1050 		rme9652->control_register &= ~RME9652_opt_out;
1051 	}
1052 
1053 	if ((restart = rme9652->running)) {
1054 		rme9652_stop(rme9652);
1055 	}
1056 
1057 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1058 
1059 	if (restart) {
1060 		rme9652_start(rme9652);
1061 	}
1062 
1063 	return 0;
1064 }
1065 
1066 #define snd_rme9652_info_spdif_out	snd_ctl_boolean_mono_info
1067 
1068 static int snd_rme9652_get_spdif_out(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1069 {
1070 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1071 
1072 	spin_lock_irq(&rme9652->lock);
1073 	ucontrol->value.integer.value[0] = rme9652_spdif_out(rme9652);
1074 	spin_unlock_irq(&rme9652->lock);
1075 	return 0;
1076 }
1077 
1078 static int snd_rme9652_put_spdif_out(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1079 {
1080 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1081 	int change;
1082 	unsigned int val;
1083 
1084 	if (!snd_rme9652_use_is_exclusive(rme9652))
1085 		return -EBUSY;
1086 	val = ucontrol->value.integer.value[0] & 1;
1087 	spin_lock_irq(&rme9652->lock);
1088 	change = (int)val != rme9652_spdif_out(rme9652);
1089 	rme9652_set_spdif_output(rme9652, val);
1090 	spin_unlock_irq(&rme9652->lock);
1091 	return change;
1092 }
1093 
1094 #define RME9652_SYNC_MODE(xname, xindex) \
1095 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1096   .info = snd_rme9652_info_sync_mode, \
1097   .get = snd_rme9652_get_sync_mode, .put = snd_rme9652_put_sync_mode }
1098 
1099 static int rme9652_sync_mode(struct snd_rme9652 *rme9652)
1100 {
1101 	if (rme9652->control_register & RME9652_wsel) {
1102 		return 2;
1103 	} else if (rme9652->control_register & RME9652_Master) {
1104 		return 1;
1105 	} else {
1106 		return 0;
1107 	}
1108 }
1109 
1110 static int rme9652_set_sync_mode(struct snd_rme9652 *rme9652, int mode)
1111 {
1112 	int restart = 0;
1113 
1114 	switch (mode) {
1115 	case 0:
1116 		rme9652->control_register &=
1117 		    ~(RME9652_Master | RME9652_wsel);
1118 		break;
1119 	case 1:
1120 		rme9652->control_register =
1121 		    (rme9652->control_register & ~RME9652_wsel) | RME9652_Master;
1122 		break;
1123 	case 2:
1124 		rme9652->control_register |=
1125 		    (RME9652_Master | RME9652_wsel);
1126 		break;
1127 	}
1128 
1129 	if ((restart = rme9652->running)) {
1130 		rme9652_stop(rme9652);
1131 	}
1132 
1133 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1134 
1135 	if (restart) {
1136 		rme9652_start(rme9652);
1137 	}
1138 
1139 	return 0;
1140 }
1141 
1142 static int snd_rme9652_info_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1143 {
1144 	static char *texts[3] = {"AutoSync", "Master", "Word Clock"};
1145 
1146 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1147 	uinfo->count = 1;
1148 	uinfo->value.enumerated.items = 3;
1149 	if (uinfo->value.enumerated.item > 2)
1150 		uinfo->value.enumerated.item = 2;
1151 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1152 	return 0;
1153 }
1154 
1155 static int snd_rme9652_get_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1156 {
1157 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1158 
1159 	spin_lock_irq(&rme9652->lock);
1160 	ucontrol->value.enumerated.item[0] = rme9652_sync_mode(rme9652);
1161 	spin_unlock_irq(&rme9652->lock);
1162 	return 0;
1163 }
1164 
1165 static int snd_rme9652_put_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1166 {
1167 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1168 	int change;
1169 	unsigned int val;
1170 
1171 	val = ucontrol->value.enumerated.item[0] % 3;
1172 	spin_lock_irq(&rme9652->lock);
1173 	change = (int)val != rme9652_sync_mode(rme9652);
1174 	rme9652_set_sync_mode(rme9652, val);
1175 	spin_unlock_irq(&rme9652->lock);
1176 	return change;
1177 }
1178 
1179 #define RME9652_SYNC_PREF(xname, xindex) \
1180 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1181   .info = snd_rme9652_info_sync_pref, \
1182   .get = snd_rme9652_get_sync_pref, .put = snd_rme9652_put_sync_pref }
1183 
1184 static int rme9652_sync_pref(struct snd_rme9652 *rme9652)
1185 {
1186 	switch (rme9652->control_register & RME9652_SyncPref_Mask) {
1187 	case RME9652_SyncPref_ADAT1:
1188 		return RME9652_SYNC_FROM_ADAT1;
1189 	case RME9652_SyncPref_ADAT2:
1190 		return RME9652_SYNC_FROM_ADAT2;
1191 	case RME9652_SyncPref_ADAT3:
1192 		return RME9652_SYNC_FROM_ADAT3;
1193 	case RME9652_SyncPref_SPDIF:
1194 		return RME9652_SYNC_FROM_SPDIF;
1195 	}
1196 	/* Not reachable */
1197 	return 0;
1198 }
1199 
1200 static int rme9652_set_sync_pref(struct snd_rme9652 *rme9652, int pref)
1201 {
1202 	int restart;
1203 
1204 	rme9652->control_register &= ~RME9652_SyncPref_Mask;
1205 	switch (pref) {
1206 	case RME9652_SYNC_FROM_ADAT1:
1207 		rme9652->control_register |= RME9652_SyncPref_ADAT1;
1208 		break;
1209 	case RME9652_SYNC_FROM_ADAT2:
1210 		rme9652->control_register |= RME9652_SyncPref_ADAT2;
1211 		break;
1212 	case RME9652_SYNC_FROM_ADAT3:
1213 		rme9652->control_register |= RME9652_SyncPref_ADAT3;
1214 		break;
1215 	case RME9652_SYNC_FROM_SPDIF:
1216 		rme9652->control_register |= RME9652_SyncPref_SPDIF;
1217 		break;
1218 	}
1219 
1220 	if ((restart = rme9652->running)) {
1221 		rme9652_stop(rme9652);
1222 	}
1223 
1224 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1225 
1226 	if (restart) {
1227 		rme9652_start(rme9652);
1228 	}
1229 
1230 	return 0;
1231 }
1232 
1233 static int snd_rme9652_info_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1234 {
1235 	static char *texts[4] = {"IEC958 In", "ADAT1 In", "ADAT2 In", "ADAT3 In"};
1236 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1237 
1238 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1239 	uinfo->count = 1;
1240 	uinfo->value.enumerated.items = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 3;
1241 	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
1242 		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
1243 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1244 	return 0;
1245 }
1246 
1247 static int snd_rme9652_get_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1248 {
1249 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1250 
1251 	spin_lock_irq(&rme9652->lock);
1252 	ucontrol->value.enumerated.item[0] = rme9652_sync_pref(rme9652);
1253 	spin_unlock_irq(&rme9652->lock);
1254 	return 0;
1255 }
1256 
1257 static int snd_rme9652_put_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1258 {
1259 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1260 	int change, max;
1261 	unsigned int val;
1262 
1263 	if (!snd_rme9652_use_is_exclusive(rme9652))
1264 		return -EBUSY;
1265 	max = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 3;
1266 	val = ucontrol->value.enumerated.item[0] % max;
1267 	spin_lock_irq(&rme9652->lock);
1268 	change = (int)val != rme9652_sync_pref(rme9652);
1269 	rme9652_set_sync_pref(rme9652, val);
1270 	spin_unlock_irq(&rme9652->lock);
1271 	return change;
1272 }
1273 
1274 static int snd_rme9652_info_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1275 {
1276 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1277 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1278 	uinfo->count = rme9652->ss_channels;
1279 	uinfo->value.integer.min = 0;
1280 	uinfo->value.integer.max = 1;
1281 	return 0;
1282 }
1283 
1284 static int snd_rme9652_get_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1285 {
1286 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1287 	unsigned int k;
1288 	u32 thru_bits = rme9652->thru_bits;
1289 
1290 	for (k = 0; k < rme9652->ss_channels; ++k) {
1291 		ucontrol->value.integer.value[k] = !!(thru_bits & (1 << k));
1292 	}
1293 	return 0;
1294 }
1295 
1296 static int snd_rme9652_put_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1297 {
1298 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1299 	int change;
1300 	unsigned int chn;
1301 	u32 thru_bits = 0;
1302 
1303 	if (!snd_rme9652_use_is_exclusive(rme9652))
1304 		return -EBUSY;
1305 
1306 	for (chn = 0; chn < rme9652->ss_channels; ++chn) {
1307 		if (ucontrol->value.integer.value[chn])
1308 			thru_bits |= 1 << chn;
1309 	}
1310 
1311 	spin_lock_irq(&rme9652->lock);
1312 	change = thru_bits ^ rme9652->thru_bits;
1313 	if (change) {
1314 		for (chn = 0; chn < rme9652->ss_channels; ++chn) {
1315 			if (!(change & (1 << chn)))
1316 				continue;
1317 			rme9652_set_thru(rme9652,chn,thru_bits&(1<<chn));
1318 		}
1319 	}
1320 	spin_unlock_irq(&rme9652->lock);
1321 	return !!change;
1322 }
1323 
1324 #define RME9652_PASSTHRU(xname, xindex) \
1325 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1326   .info = snd_rme9652_info_passthru, \
1327   .put = snd_rme9652_put_passthru, \
1328   .get = snd_rme9652_get_passthru }
1329 
1330 #define snd_rme9652_info_passthru	snd_ctl_boolean_mono_info
1331 
1332 static int snd_rme9652_get_passthru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1333 {
1334 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1335 
1336 	spin_lock_irq(&rme9652->lock);
1337 	ucontrol->value.integer.value[0] = rme9652->passthru;
1338 	spin_unlock_irq(&rme9652->lock);
1339 	return 0;
1340 }
1341 
1342 static int snd_rme9652_put_passthru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1343 {
1344 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1345 	int change;
1346 	unsigned int val;
1347 	int err = 0;
1348 
1349 	if (!snd_rme9652_use_is_exclusive(rme9652))
1350 		return -EBUSY;
1351 
1352 	val = ucontrol->value.integer.value[0] & 1;
1353 	spin_lock_irq(&rme9652->lock);
1354 	change = (ucontrol->value.integer.value[0] != rme9652->passthru);
1355 	if (change)
1356 		err = rme9652_set_passthru(rme9652, val);
1357 	spin_unlock_irq(&rme9652->lock);
1358 	return err ? err : change;
1359 }
1360 
1361 /* Read-only switches */
1362 
1363 #define RME9652_SPDIF_RATE(xname, xindex) \
1364 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1365   .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
1366   .info = snd_rme9652_info_spdif_rate, \
1367   .get = snd_rme9652_get_spdif_rate }
1368 
1369 static int snd_rme9652_info_spdif_rate(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1370 {
1371 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1372 	uinfo->count = 1;
1373 	uinfo->value.integer.min = 0;
1374 	uinfo->value.integer.max = 96000;
1375 	return 0;
1376 }
1377 
1378 static int snd_rme9652_get_spdif_rate(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1379 {
1380 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1381 
1382 	spin_lock_irq(&rme9652->lock);
1383 	ucontrol->value.integer.value[0] = rme9652_spdif_sample_rate(rme9652);
1384 	spin_unlock_irq(&rme9652->lock);
1385 	return 0;
1386 }
1387 
1388 #define RME9652_ADAT_SYNC(xname, xindex, xidx) \
1389 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1390   .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
1391   .info = snd_rme9652_info_adat_sync, \
1392   .get = snd_rme9652_get_adat_sync, .private_value = xidx }
1393 
1394 static int snd_rme9652_info_adat_sync(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1395 {
1396 	static char *texts[4] = {"No Lock", "Lock", "No Lock Sync", "Lock Sync"};
1397 
1398 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1399 	uinfo->count = 1;
1400 	uinfo->value.enumerated.items = 4;
1401 	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
1402 		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
1403 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1404 	return 0;
1405 }
1406 
1407 static int snd_rme9652_get_adat_sync(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1408 {
1409 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1410 	unsigned int mask1, mask2, val;
1411 
1412 	switch (kcontrol->private_value) {
1413 	case 0: mask1 = RME9652_lock_0; mask2 = RME9652_sync_0; break;
1414 	case 1: mask1 = RME9652_lock_1; mask2 = RME9652_sync_1; break;
1415 	case 2: mask1 = RME9652_lock_2; mask2 = RME9652_sync_2; break;
1416 	default: return -EINVAL;
1417 	}
1418 	val = rme9652_read(rme9652, RME9652_status_register);
1419 	ucontrol->value.enumerated.item[0] = (val & mask1) ? 1 : 0;
1420 	ucontrol->value.enumerated.item[0] |= (val & mask2) ? 2 : 0;
1421 	return 0;
1422 }
1423 
1424 #define RME9652_TC_VALID(xname, xindex) \
1425 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1426   .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
1427   .info = snd_rme9652_info_tc_valid, \
1428   .get = snd_rme9652_get_tc_valid }
1429 
1430 #define snd_rme9652_info_tc_valid	snd_ctl_boolean_mono_info
1431 
1432 static int snd_rme9652_get_tc_valid(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1433 {
1434 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1435 
1436 	ucontrol->value.integer.value[0] =
1437 		(rme9652_read(rme9652, RME9652_status_register) & RME9652_tc_valid) ? 1 : 0;
1438 	return 0;
1439 }
1440 
1441 #ifdef ALSA_HAS_STANDARD_WAY_OF_RETURNING_TIMECODE
1442 
1443 /* FIXME: this routine needs a port to the new control API --jk */
1444 
1445 static int snd_rme9652_get_tc_value(void *private_data,
1446 				    snd_kswitch_t *kswitch,
1447 				    snd_switch_t *uswitch)
1448 {
1449 	struct snd_rme9652 *s = (struct snd_rme9652 *) private_data;
1450 	u32 value;
1451 	int i;
1452 
1453 	uswitch->type = SNDRV_SW_TYPE_DWORD;
1454 
1455 	if ((rme9652_read(s, RME9652_status_register) &
1456 	     RME9652_tc_valid) == 0) {
1457 		uswitch->value.data32[0] = 0;
1458 		return 0;
1459 	}
1460 
1461 	/* timecode request */
1462 
1463 	rme9652_write(s, RME9652_time_code, 0);
1464 
1465 	/* XXX bug alert: loop-based timing !!!! */
1466 
1467 	for (i = 0; i < 50; i++) {
1468 		if (!(rme9652_read(s, i * 4) & RME9652_tc_busy))
1469 			break;
1470 	}
1471 
1472 	if (!(rme9652_read(s, i * 4) & RME9652_tc_busy)) {
1473 		return -EIO;
1474 	}
1475 
1476 	value = 0;
1477 
1478 	for (i = 0; i < 32; i++) {
1479 		value >>= 1;
1480 
1481 		if (rme9652_read(s, i * 4) & RME9652_tc_out)
1482 			value |= 0x80000000;
1483 	}
1484 
1485 	if (value > 2 * 60 * 48000) {
1486 		value -= 2 * 60 * 48000;
1487 	} else {
1488 		value = 0;
1489 	}
1490 
1491 	uswitch->value.data32[0] = value;
1492 
1493 	return 0;
1494 }
1495 
1496 #endif				/* ALSA_HAS_STANDARD_WAY_OF_RETURNING_TIMECODE */
1497 
1498 static struct snd_kcontrol_new snd_rme9652_controls[] = {
1499 {
1500 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1501 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1502 	.info =		snd_rme9652_control_spdif_info,
1503 	.get =		snd_rme9652_control_spdif_get,
1504 	.put =		snd_rme9652_control_spdif_put,
1505 },
1506 {
1507 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1508 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1509 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
1510 	.info =		snd_rme9652_control_spdif_stream_info,
1511 	.get =		snd_rme9652_control_spdif_stream_get,
1512 	.put =		snd_rme9652_control_spdif_stream_put,
1513 },
1514 {
1515 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
1516 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1517 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
1518 	.info =		snd_rme9652_control_spdif_mask_info,
1519 	.get =		snd_rme9652_control_spdif_mask_get,
1520 	.private_value = IEC958_AES0_NONAUDIO |
1521 			IEC958_AES0_PROFESSIONAL |
1522 			IEC958_AES0_CON_EMPHASIS,
1523 },
1524 {
1525 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
1526 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1527 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
1528 	.info =		snd_rme9652_control_spdif_mask_info,
1529 	.get =		snd_rme9652_control_spdif_mask_get,
1530 	.private_value = IEC958_AES0_NONAUDIO |
1531 			IEC958_AES0_PROFESSIONAL |
1532 			IEC958_AES0_PRO_EMPHASIS,
1533 },
1534 RME9652_SPDIF_IN("IEC958 Input Connector", 0),
1535 RME9652_SPDIF_OUT("IEC958 Output also on ADAT1", 0),
1536 RME9652_SYNC_MODE("Sync Mode", 0),
1537 RME9652_SYNC_PREF("Preferred Sync Source", 0),
1538 {
1539 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1540 	.name = "Channels Thru",
1541 	.index = 0,
1542 	.info = snd_rme9652_info_thru,
1543 	.get = snd_rme9652_get_thru,
1544 	.put = snd_rme9652_put_thru,
1545 },
1546 RME9652_SPDIF_RATE("IEC958 Sample Rate", 0),
1547 RME9652_ADAT_SYNC("ADAT1 Sync Check", 0, 0),
1548 RME9652_ADAT_SYNC("ADAT2 Sync Check", 0, 1),
1549 RME9652_TC_VALID("Timecode Valid", 0),
1550 RME9652_PASSTHRU("Passthru", 0)
1551 };
1552 
1553 static struct snd_kcontrol_new snd_rme9652_adat3_check =
1554 RME9652_ADAT_SYNC("ADAT3 Sync Check", 0, 2);
1555 
1556 static struct snd_kcontrol_new snd_rme9652_adat1_input =
1557 RME9652_ADAT1_IN("ADAT1 Input Source", 0);
1558 
1559 static int snd_rme9652_create_controls(struct snd_card *card, struct snd_rme9652 *rme9652)
1560 {
1561 	unsigned int idx;
1562 	int err;
1563 	struct snd_kcontrol *kctl;
1564 
1565 	for (idx = 0; idx < ARRAY_SIZE(snd_rme9652_controls); idx++) {
1566 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_controls[idx], rme9652))) < 0)
1567 			return err;
1568 		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
1569 			rme9652->spdif_ctl = kctl;
1570 	}
1571 
1572 	if (rme9652->ss_channels == RME9652_NCHANNELS)
1573 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_adat3_check, rme9652))) < 0)
1574 			return err;
1575 
1576 	if (rme9652->hw_rev >= 15)
1577 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_adat1_input, rme9652))) < 0)
1578 			return err;
1579 
1580 	return 0;
1581 }
1582 
1583 /*------------------------------------------------------------
1584    /proc interface
1585  ------------------------------------------------------------*/
1586 
1587 static void
1588 snd_rme9652_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1589 {
1590 	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) entry->private_data;
1591 	u32 thru_bits = rme9652->thru_bits;
1592 	int show_auto_sync_source = 0;
1593 	int i;
1594 	unsigned int status;
1595 	int x;
1596 
1597 	status = rme9652_read(rme9652, RME9652_status_register);
1598 
1599 	snd_iprintf(buffer, "%s (Card #%d)\n", rme9652->card_name, rme9652->card->number + 1);
1600 	snd_iprintf(buffer, "Buffers: capture %p playback %p\n",
1601 		    rme9652->capture_buffer, rme9652->playback_buffer);
1602 	snd_iprintf(buffer, "IRQ: %d Registers bus: 0x%lx VM: 0x%lx\n",
1603 		    rme9652->irq, rme9652->port, (unsigned long)rme9652->iobase);
1604 	snd_iprintf(buffer, "Control register: %x\n", rme9652->control_register);
1605 
1606 	snd_iprintf(buffer, "\n");
1607 
1608 	x = 1 << (6 + rme9652_decode_latency(rme9652->control_register &
1609 					     RME9652_latency));
1610 
1611 	snd_iprintf(buffer, "Latency: %d samples (2 periods of %lu bytes)\n",
1612 		    x, (unsigned long) rme9652->period_bytes);
1613 	snd_iprintf(buffer, "Hardware pointer (frames): %ld\n",
1614 		    rme9652_hw_pointer(rme9652));
1615 	snd_iprintf(buffer, "Passthru: %s\n",
1616 		    rme9652->passthru ? "yes" : "no");
1617 
1618 	if ((rme9652->control_register & (RME9652_Master | RME9652_wsel)) == 0) {
1619 		snd_iprintf(buffer, "Clock mode: autosync\n");
1620 		show_auto_sync_source = 1;
1621 	} else if (rme9652->control_register & RME9652_wsel) {
1622 		if (status & RME9652_wsel_rd) {
1623 			snd_iprintf(buffer, "Clock mode: word clock\n");
1624 		} else {
1625 			snd_iprintf(buffer, "Clock mode: word clock (no signal)\n");
1626 		}
1627 	} else {
1628 		snd_iprintf(buffer, "Clock mode: master\n");
1629 	}
1630 
1631 	if (show_auto_sync_source) {
1632 		switch (rme9652->control_register & RME9652_SyncPref_Mask) {
1633 		case RME9652_SyncPref_ADAT1:
1634 			snd_iprintf(buffer, "Pref. sync source: ADAT1\n");
1635 			break;
1636 		case RME9652_SyncPref_ADAT2:
1637 			snd_iprintf(buffer, "Pref. sync source: ADAT2\n");
1638 			break;
1639 		case RME9652_SyncPref_ADAT3:
1640 			snd_iprintf(buffer, "Pref. sync source: ADAT3\n");
1641 			break;
1642 		case RME9652_SyncPref_SPDIF:
1643 			snd_iprintf(buffer, "Pref. sync source: IEC958\n");
1644 			break;
1645 		default:
1646 			snd_iprintf(buffer, "Pref. sync source: ???\n");
1647 		}
1648 	}
1649 
1650 	if (rme9652->hw_rev >= 15)
1651 		snd_iprintf(buffer, "\nADAT1 Input source: %s\n",
1652 			    (rme9652->control_register & RME9652_ADAT1_INTERNAL) ?
1653 			    "Internal" : "ADAT1 optical");
1654 
1655 	snd_iprintf(buffer, "\n");
1656 
1657 	switch (rme9652_decode_spdif_in(rme9652->control_register &
1658 					RME9652_inp)) {
1659 	case RME9652_SPDIFIN_OPTICAL:
1660 		snd_iprintf(buffer, "IEC958 input: ADAT1\n");
1661 		break;
1662 	case RME9652_SPDIFIN_COAXIAL:
1663 		snd_iprintf(buffer, "IEC958 input: Coaxial\n");
1664 		break;
1665 	case RME9652_SPDIFIN_INTERN:
1666 		snd_iprintf(buffer, "IEC958 input: Internal\n");
1667 		break;
1668 	default:
1669 		snd_iprintf(buffer, "IEC958 input: ???\n");
1670 		break;
1671 	}
1672 
1673 	if (rme9652->control_register & RME9652_opt_out) {
1674 		snd_iprintf(buffer, "IEC958 output: Coaxial & ADAT1\n");
1675 	} else {
1676 		snd_iprintf(buffer, "IEC958 output: Coaxial only\n");
1677 	}
1678 
1679 	if (rme9652->control_register & RME9652_PRO) {
1680 		snd_iprintf(buffer, "IEC958 quality: Professional\n");
1681 	} else {
1682 		snd_iprintf(buffer, "IEC958 quality: Consumer\n");
1683 	}
1684 
1685 	if (rme9652->control_register & RME9652_EMP) {
1686 		snd_iprintf(buffer, "IEC958 emphasis: on\n");
1687 	} else {
1688 		snd_iprintf(buffer, "IEC958 emphasis: off\n");
1689 	}
1690 
1691 	if (rme9652->control_register & RME9652_Dolby) {
1692 		snd_iprintf(buffer, "IEC958 Dolby: on\n");
1693 	} else {
1694 		snd_iprintf(buffer, "IEC958 Dolby: off\n");
1695 	}
1696 
1697 	i = rme9652_spdif_sample_rate(rme9652);
1698 
1699 	if (i < 0) {
1700 		snd_iprintf(buffer,
1701 			    "IEC958 sample rate: error flag set\n");
1702 	} else if (i == 0) {
1703 		snd_iprintf(buffer, "IEC958 sample rate: undetermined\n");
1704 	} else {
1705 		snd_iprintf(buffer, "IEC958 sample rate: %d\n", i);
1706 	}
1707 
1708 	snd_iprintf(buffer, "\n");
1709 
1710 	snd_iprintf(buffer, "ADAT Sample rate: %dHz\n",
1711 		    rme9652_adat_sample_rate(rme9652));
1712 
1713 	/* Sync Check */
1714 
1715 	x = status & RME9652_sync_0;
1716 	if (status & RME9652_lock_0) {
1717 		snd_iprintf(buffer, "ADAT1: %s\n", x ? "Sync" : "Lock");
1718 	} else {
1719 		snd_iprintf(buffer, "ADAT1: No Lock\n");
1720 	}
1721 
1722 	x = status & RME9652_sync_1;
1723 	if (status & RME9652_lock_1) {
1724 		snd_iprintf(buffer, "ADAT2: %s\n", x ? "Sync" : "Lock");
1725 	} else {
1726 		snd_iprintf(buffer, "ADAT2: No Lock\n");
1727 	}
1728 
1729 	x = status & RME9652_sync_2;
1730 	if (status & RME9652_lock_2) {
1731 		snd_iprintf(buffer, "ADAT3: %s\n", x ? "Sync" : "Lock");
1732 	} else {
1733 		snd_iprintf(buffer, "ADAT3: No Lock\n");
1734 	}
1735 
1736 	snd_iprintf(buffer, "\n");
1737 
1738 	snd_iprintf(buffer, "Timecode signal: %s\n",
1739 		    (status & RME9652_tc_valid) ? "yes" : "no");
1740 
1741 	/* thru modes */
1742 
1743 	snd_iprintf(buffer, "Punch Status:\n\n");
1744 
1745 	for (i = 0; i < rme9652->ss_channels; i++) {
1746 		if (thru_bits & (1 << i)) {
1747 			snd_iprintf(buffer, "%2d:  on ", i + 1);
1748 		} else {
1749 			snd_iprintf(buffer, "%2d: off ", i + 1);
1750 		}
1751 
1752 		if (((i + 1) % 8) == 0) {
1753 			snd_iprintf(buffer, "\n");
1754 		}
1755 	}
1756 
1757 	snd_iprintf(buffer, "\n");
1758 }
1759 
1760 static void snd_rme9652_proc_init(struct snd_rme9652 *rme9652)
1761 {
1762 	struct snd_info_entry *entry;
1763 
1764 	if (! snd_card_proc_new(rme9652->card, "rme9652", &entry))
1765 		snd_info_set_text_ops(entry, rme9652, snd_rme9652_proc_read);
1766 }
1767 
1768 static void snd_rme9652_free_buffers(struct snd_rme9652 *rme9652)
1769 {
1770 	snd_hammerfall_free_buffer(&rme9652->capture_dma_buf, rme9652->pci);
1771 	snd_hammerfall_free_buffer(&rme9652->playback_dma_buf, rme9652->pci);
1772 }
1773 
1774 static int snd_rme9652_free(struct snd_rme9652 *rme9652)
1775 {
1776 	if (rme9652->irq >= 0)
1777 		rme9652_stop(rme9652);
1778 	snd_rme9652_free_buffers(rme9652);
1779 
1780 	if (rme9652->irq >= 0)
1781 		free_irq(rme9652->irq, (void *)rme9652);
1782 	if (rme9652->iobase)
1783 		iounmap(rme9652->iobase);
1784 	if (rme9652->port)
1785 		pci_release_regions(rme9652->pci);
1786 
1787 	pci_disable_device(rme9652->pci);
1788 	return 0;
1789 }
1790 
1791 static int snd_rme9652_initialize_memory(struct snd_rme9652 *rme9652)
1792 {
1793 	unsigned long pb_bus, cb_bus;
1794 
1795 	if (snd_hammerfall_get_buffer(rme9652->pci, &rme9652->capture_dma_buf, RME9652_DMA_AREA_BYTES) < 0 ||
1796 	    snd_hammerfall_get_buffer(rme9652->pci, &rme9652->playback_dma_buf, RME9652_DMA_AREA_BYTES) < 0) {
1797 		if (rme9652->capture_dma_buf.area)
1798 			snd_dma_free_pages(&rme9652->capture_dma_buf);
1799 		printk(KERN_ERR "%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 		snd_printk(KERN_ERR "unable to remap region 0x%lx-0x%lx\n", rme9652->port, rme9652->port + RME9652_IO_EXTENT - 1);
2478 		return -EBUSY;
2479 	}
2480 
2481 	if (request_irq(pci->irq, snd_rme9652_interrupt, IRQF_SHARED,
2482 			KBUILD_MODNAME, rme9652)) {
2483 		snd_printk(KERN_ERR "unable to request IRQ %d\n", pci->irq);
2484 		return -EBUSY;
2485 	}
2486 	rme9652->irq = pci->irq;
2487 	rme9652->precise_ptr = precise_ptr;
2488 
2489 	/* Determine the h/w rev level of the card. This seems like
2490 	   a particularly kludgy way to encode it, but its what RME
2491 	   chose to do, so we follow them ...
2492 	*/
2493 
2494 	status = rme9652_read(rme9652, RME9652_status_register);
2495 	if (rme9652_decode_spdif_rate(status&RME9652_F) == 1) {
2496 		rme9652->hw_rev = 15;
2497 	} else {
2498 		rme9652->hw_rev = 11;
2499 	}
2500 
2501 	/* Differentiate between the standard Hammerfall, and the
2502 	   "Light", which does not have the expansion board. This
2503 	   method comes from information received from Mathhias
2504 	   Clausen at RME. Display the EEPROM and h/w revID where
2505 	   relevant.
2506 	*/
2507 
2508 	switch (rev) {
2509 	case 8: /* original eprom */
2510 		strcpy(card->driver, "RME9636");
2511 		if (rme9652->hw_rev == 15) {
2512 			rme9652->card_name = "RME Digi9636 (Rev 1.5)";
2513 		} else {
2514 			rme9652->card_name = "RME Digi9636";
2515 		}
2516 		rme9652->ss_channels = RME9636_NCHANNELS;
2517 		break;
2518 	case 9: /* W36_G EPROM */
2519 		strcpy(card->driver, "RME9636");
2520 		rme9652->card_name = "RME Digi9636 (Rev G)";
2521 		rme9652->ss_channels = RME9636_NCHANNELS;
2522 		break;
2523 	case 4: /* W52_G EPROM */
2524 		strcpy(card->driver, "RME9652");
2525 		rme9652->card_name = "RME Digi9652 (Rev G)";
2526 		rme9652->ss_channels = RME9652_NCHANNELS;
2527 		break;
2528 	case 3: /* original eprom */
2529 		strcpy(card->driver, "RME9652");
2530 		if (rme9652->hw_rev == 15) {
2531 			rme9652->card_name = "RME Digi9652 (Rev 1.5)";
2532 		} else {
2533 			rme9652->card_name = "RME Digi9652";
2534 		}
2535 		rme9652->ss_channels = RME9652_NCHANNELS;
2536 		break;
2537 	}
2538 
2539 	rme9652->ds_channels = (rme9652->ss_channels - 2) / 2 + 2;
2540 
2541 	pci_set_master(rme9652->pci);
2542 
2543 	if ((err = snd_rme9652_initialize_memory(rme9652)) < 0) {
2544 		return err;
2545 	}
2546 
2547 	if ((err = snd_rme9652_create_pcm(card, rme9652)) < 0) {
2548 		return err;
2549 	}
2550 
2551 	if ((err = snd_rme9652_create_controls(card, rme9652)) < 0) {
2552 		return err;
2553 	}
2554 
2555 	snd_rme9652_proc_init(rme9652);
2556 
2557 	rme9652->last_spdif_sample_rate = -1;
2558 	rme9652->last_adat_sample_rate = -1;
2559 	rme9652->playback_pid = -1;
2560 	rme9652->capture_pid = -1;
2561 	rme9652->capture_substream = NULL;
2562 	rme9652->playback_substream = NULL;
2563 
2564 	snd_rme9652_set_defaults(rme9652);
2565 
2566 	if (rme9652->hw_rev == 15) {
2567 		rme9652_initialize_spdif_receiver (rme9652);
2568 	}
2569 
2570 	return 0;
2571 }
2572 
2573 static void snd_rme9652_card_free(struct snd_card *card)
2574 {
2575 	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) card->private_data;
2576 
2577 	if (rme9652)
2578 		snd_rme9652_free(rme9652);
2579 }
2580 
2581 static int snd_rme9652_probe(struct pci_dev *pci,
2582 			     const struct pci_device_id *pci_id)
2583 {
2584 	static int dev;
2585 	struct snd_rme9652 *rme9652;
2586 	struct snd_card *card;
2587 	int err;
2588 
2589 	if (dev >= SNDRV_CARDS)
2590 		return -ENODEV;
2591 	if (!enable[dev]) {
2592 		dev++;
2593 		return -ENOENT;
2594 	}
2595 
2596 	err = snd_card_create(index[dev], id[dev], THIS_MODULE,
2597 			      sizeof(struct snd_rme9652), &card);
2598 
2599 	if (err < 0)
2600 		return err;
2601 
2602 	rme9652 = (struct snd_rme9652 *) card->private_data;
2603 	card->private_free = snd_rme9652_card_free;
2604 	rme9652->dev = dev;
2605 	rme9652->pci = pci;
2606 	snd_card_set_dev(card, &pci->dev);
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 	pci_set_drvdata(pci, NULL);
2632 }
2633 
2634 static struct pci_driver rme9652_driver = {
2635 	.name	  = KBUILD_MODNAME,
2636 	.id_table = snd_rme9652_ids,
2637 	.probe	  = snd_rme9652_probe,
2638 	.remove	  = snd_rme9652_remove,
2639 };
2640 
2641 module_pci_driver(rme9652_driver);
2642