xref: /openbmc/linux/sound/pci/rme9652/rme9652.c (revision 96de0e252cedffad61b3cb5e05662c591898e69a)
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 <sound/driver.h>
24 #include <linux/delay.h>
25 #include <linux/init.h>
26 #include <linux/interrupt.h>
27 #include <linux/pci.h>
28 #include <linux/slab.h>
29 #include <linux/moduleparam.h>
30 
31 #include <sound/core.h>
32 #include <sound/control.h>
33 #include <sound/pcm.h>
34 #include <sound/info.h>
35 #include <sound/asoundef.h>
36 #include <sound/initval.h>
37 
38 #include <asm/current.h>
39 #include <asm/io.h>
40 
41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
43 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
44 static int precise_ptr[SNDRV_CARDS];			/* Enable precise pointer */
45 
46 module_param_array(index, int, NULL, 0444);
47 MODULE_PARM_DESC(index, "Index value for RME Digi9652 (Hammerfall) soundcard.");
48 module_param_array(id, charp, NULL, 0444);
49 MODULE_PARM_DESC(id, "ID string for RME Digi9652 (Hammerfall) soundcard.");
50 module_param_array(enable, bool, NULL, 0444);
51 MODULE_PARM_DESC(enable, "Enable/disable specific RME96{52,36} soundcards.");
52 module_param_array(precise_ptr, bool, NULL, 0444);
53 MODULE_PARM_DESC(precise_ptr, "Enable precise pointer (doesn't work reliably).");
54 MODULE_AUTHOR("Paul Davis <pbd@op.net>, Winfried Ritsch");
55 MODULE_DESCRIPTION("RME Digi9652/Digi9636");
56 MODULE_LICENSE("GPL");
57 MODULE_SUPPORTED_DEVICE("{{RME,Hammerfall},"
58 		"{RME,Hammerfall-Light}}");
59 
60 /* The Hammerfall has two sets of 24 ADAT + 2 S/PDIF channels, one for
61    capture, one for playback. Both the ADAT and S/PDIF channels appear
62    to the host CPU in the same block of memory. There is no functional
63    difference between them in terms of access.
64 
65    The Hammerfall Light is identical to the Hammerfall, except that it
66    has 2 sets 18 channels (16 ADAT + 2 S/PDIF) for capture and playback.
67 */
68 
69 #define RME9652_NCHANNELS       26
70 #define RME9636_NCHANNELS       18
71 
72 /* Preferred sync source choices - used by "sync_pref" control switch */
73 
74 #define RME9652_SYNC_FROM_SPDIF 0
75 #define RME9652_SYNC_FROM_ADAT1 1
76 #define RME9652_SYNC_FROM_ADAT2 2
77 #define RME9652_SYNC_FROM_ADAT3 3
78 
79 /* Possible sources of S/PDIF input */
80 
81 #define RME9652_SPDIFIN_OPTICAL 0	/* optical (ADAT1) */
82 #define RME9652_SPDIFIN_COAXIAL 1	/* coaxial (RCA) */
83 #define RME9652_SPDIFIN_INTERN  2	/* internal (CDROM) */
84 
85 /* ------------- Status-Register bits --------------------- */
86 
87 #define RME9652_IRQ	   (1<<0)	/* IRQ is High if not reset by irq_clear */
88 #define RME9652_lock_2	   (1<<1)	/* ADAT 3-PLL: 1=locked, 0=unlocked */
89 #define RME9652_lock_1	   (1<<2)	/* ADAT 2-PLL: 1=locked, 0=unlocked */
90 #define RME9652_lock_0	   (1<<3)	/* ADAT 1-PLL: 1=locked, 0=unlocked */
91 #define RME9652_fs48	   (1<<4)	/* sample rate is 0=44.1/88.2,1=48/96 Khz */
92 #define RME9652_wsel_rd	   (1<<5)	/* if Word-Clock is used and valid then 1 */
93                                         /* bits 6-15 encode h/w buffer pointer position */
94 #define RME9652_sync_2	   (1<<16)	/* if ADAT-IN 3 in sync to system clock */
95 #define RME9652_sync_1	   (1<<17)	/* if ADAT-IN 2 in sync to system clock */
96 #define RME9652_sync_0	   (1<<18)	/* if ADAT-IN 1 in sync to system clock */
97 #define RME9652_DS_rd	   (1<<19)	/* 1=Double Speed Mode, 0=Normal Speed */
98 #define RME9652_tc_busy	   (1<<20)	/* 1=time-code copy in progress (960ms) */
99 #define RME9652_tc_out	   (1<<21)	/* time-code out bit */
100 #define RME9652_F_0	   (1<<22)	/* 000=64kHz, 100=88.2kHz, 011=96kHz  */
101 #define RME9652_F_1	   (1<<23)	/* 111=32kHz, 110=44.1kHz, 101=48kHz, */
102 #define RME9652_F_2	   (1<<24)	/* external Crystal Chip if ERF=1 */
103 #define RME9652_ERF	   (1<<25)	/* Error-Flag of SDPIF Receiver (1=No Lock) */
104 #define RME9652_buffer_id  (1<<26)	/* toggles by each interrupt on rec/play */
105 #define RME9652_tc_valid   (1<<27)	/* 1 = a signal is detected on time-code input */
106 #define RME9652_SPDIF_READ (1<<28)      /* byte available from Rev 1.5+ S/PDIF interface */
107 
108 #define RME9652_sync	  (RME9652_sync_0|RME9652_sync_1|RME9652_sync_2)
109 #define RME9652_lock	  (RME9652_lock_0|RME9652_lock_1|RME9652_lock_2)
110 #define RME9652_F	  (RME9652_F_0|RME9652_F_1|RME9652_F_2)
111 #define rme9652_decode_spdif_rate(x) ((x)>>22)
112 
113 /* Bit 6..15 : h/w buffer pointer */
114 
115 #define RME9652_buf_pos	  0x000FFC0
116 
117 /* Bits 31,30,29 are bits 5,4,3 of h/w pointer position on later
118    Rev G EEPROMS and Rev 1.5 cards or later.
119 */
120 
121 #define RME9652_REV15_buf_pos(x) ((((x)&0xE0000000)>>26)|((x)&RME9652_buf_pos))
122 
123 /* amount of io space we remap for register access. i'm not sure we
124    even need this much, but 1K is nice round number :)
125 */
126 
127 #define RME9652_IO_EXTENT     1024
128 
129 #define RME9652_init_buffer       0
130 #define RME9652_play_buffer       32	/* holds ptr to 26x64kBit host RAM */
131 #define RME9652_rec_buffer        36	/* holds ptr to 26x64kBit host RAM */
132 #define RME9652_control_register  64
133 #define RME9652_irq_clear         96
134 #define RME9652_time_code         100	/* useful if used with alesis adat */
135 #define RME9652_thru_base         128	/* 132...228 Thru for 26 channels */
136 
137 /* Read-only registers */
138 
139 /* Writing to any of the register locations writes to the status
140    register. We'll use the first location as our point of access.
141 */
142 
143 #define RME9652_status_register    0
144 
145 /* --------- Control-Register Bits ---------------- */
146 
147 
148 #define RME9652_start_bit	   (1<<0)	/* start record/play */
149                                                 /* bits 1-3 encode buffersize/latency */
150 #define RME9652_Master		   (1<<4)	/* Clock Mode Master=1,Slave/Auto=0 */
151 #define RME9652_IE		   (1<<5)	/* Interupt Enable */
152 #define RME9652_freq		   (1<<6)       /* samplerate 0=44.1/88.2, 1=48/96 kHz */
153 #define RME9652_freq1		   (1<<7)       /* if 0, 32kHz, else always 1 */
154 #define RME9652_DS                 (1<<8)	/* Doule Speed 0=44.1/48, 1=88.2/96 Khz */
155 #define RME9652_PRO		   (1<<9)	/* S/PDIF out: 0=consumer, 1=professional */
156 #define RME9652_EMP		   (1<<10)	/*  Emphasis 0=None, 1=ON */
157 #define RME9652_Dolby		   (1<<11)	/*  Non-audio bit 1=set, 0=unset */
158 #define RME9652_opt_out	           (1<<12)	/* Use 1st optical OUT as SPDIF: 1=yes,0=no */
159 #define RME9652_wsel		   (1<<13)	/* use Wordclock as sync (overwrites master) */
160 #define RME9652_inp_0		   (1<<14)	/* SPDIF-IN: 00=optical (ADAT1),     */
161 #define RME9652_inp_1		   (1<<15)	/* 01=koaxial (Cinch), 10=Internal CDROM */
162 #define RME9652_SyncPref_ADAT2	   (1<<16)
163 #define RME9652_SyncPref_ADAT3	   (1<<17)
164 #define RME9652_SPDIF_RESET        (1<<18)      /* Rev 1.5+: h/w S/PDIF receiver */
165 #define RME9652_SPDIF_SELECT       (1<<19)
166 #define RME9652_SPDIF_CLOCK        (1<<20)
167 #define RME9652_SPDIF_WRITE        (1<<21)
168 #define RME9652_ADAT1_INTERNAL     (1<<22)      /* Rev 1.5+: if set, internal CD connector carries ADAT */
169 
170 /* buffersize = 512Bytes * 2^n, where n is made from Bit2 ... Bit0 */
171 
172 #define RME9652_latency            0x0e
173 #define rme9652_encode_latency(x)  (((x)&0x7)<<1)
174 #define rme9652_decode_latency(x)  (((x)>>1)&0x7)
175 #define rme9652_running_double_speed(s) ((s)->control_register & RME9652_DS)
176 #define RME9652_inp                (RME9652_inp_0|RME9652_inp_1)
177 #define rme9652_encode_spdif_in(x) (((x)&0x3)<<14)
178 #define rme9652_decode_spdif_in(x) (((x)>>14)&0x3)
179 
180 #define RME9652_SyncPref_Mask      (RME9652_SyncPref_ADAT2|RME9652_SyncPref_ADAT3)
181 #define RME9652_SyncPref_ADAT1	   0
182 #define RME9652_SyncPref_SPDIF	   (RME9652_SyncPref_ADAT2|RME9652_SyncPref_ADAT3)
183 
184 /* the size of a substream (1 mono data stream) */
185 
186 #define RME9652_CHANNEL_BUFFER_SAMPLES  (16*1024)
187 #define RME9652_CHANNEL_BUFFER_BYTES    (4*RME9652_CHANNEL_BUFFER_SAMPLES)
188 
189 /* the size of the area we need to allocate for DMA transfers. the
190    size is the same regardless of the number of channels - the
191    9636 still uses the same memory area.
192 
193    Note that we allocate 1 more channel than is apparently needed
194    because the h/w seems to write 1 byte beyond the end of the last
195    page. Sigh.
196 */
197 
198 #define RME9652_DMA_AREA_BYTES ((RME9652_NCHANNELS+1) * RME9652_CHANNEL_BUFFER_BYTES)
199 #define RME9652_DMA_AREA_KILOBYTES (RME9652_DMA_AREA_BYTES/1024)
200 
201 struct snd_rme9652 {
202 	int dev;
203 
204 	spinlock_t lock;
205 	int irq;
206 	unsigned long port;
207 	void __iomem *iobase;
208 
209 	int precise_ptr;
210 
211 	u32 control_register;	/* cached value */
212 	u32 thru_bits;		/* thru 1=on, 0=off channel 1=Bit1... channel 26= Bit26 */
213 
214 	u32 creg_spdif;
215 	u32 creg_spdif_stream;
216 
217 	char *card_name;		/* hammerfall or hammerfall light names */
218 
219         size_t hw_offsetmask;     	/* &-with status register to get real hw_offset */
220 	size_t prev_hw_offset;		/* previous hw offset */
221 	size_t max_jitter;		/* maximum jitter in frames for
222 					   hw pointer */
223 	size_t period_bytes;		/* guess what this is */
224 
225 	unsigned char ds_channels;
226 	unsigned char ss_channels;	/* different for hammerfall/hammerfall-light */
227 
228 	struct snd_dma_buffer playback_dma_buf;
229 	struct snd_dma_buffer capture_dma_buf;
230 
231 	unsigned char *capture_buffer;	/* suitably aligned address */
232 	unsigned char *playback_buffer;	/* suitably aligned address */
233 
234 	pid_t capture_pid;
235 	pid_t playback_pid;
236 
237 	struct snd_pcm_substream *capture_substream;
238 	struct snd_pcm_substream *playback_substream;
239 	int running;
240 
241         int passthru;                   /* non-zero if doing pass-thru */
242         int hw_rev;                     /* h/w rev * 10 (i.e. 1.5 has hw_rev = 15) */
243 
244 	int last_spdif_sample_rate;	/* so that we can catch externally ... */
245 	int last_adat_sample_rate;	/* ... induced rate changes            */
246 
247         char *channel_map;
248 
249 	struct snd_card *card;
250 	struct snd_pcm *pcm;
251 	struct pci_dev *pci;
252 	struct snd_kcontrol *spdif_ctl;
253 
254 };
255 
256 /* These tables map the ALSA channels 1..N to the channels that we
257    need to use in order to find the relevant channel buffer. RME
258    refer to this kind of mapping as between "the ADAT channel and
259    the DMA channel." We index it using the logical audio channel,
260    and the value is the DMA channel (i.e. channel buffer number)
261    where the data for that channel can be read/written from/to.
262 */
263 
264 static char channel_map_9652_ss[26] = {
265 	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17,
266 	18, 19, 20, 21, 22, 23, 24, 25
267 };
268 
269 static char channel_map_9636_ss[26] = {
270 	0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
271 	/* channels 16 and 17 are S/PDIF */
272 	24, 25,
273 	/* channels 18-25 don't exist */
274 	-1, -1, -1, -1, -1, -1, -1, -1
275 };
276 
277 static char channel_map_9652_ds[26] = {
278 	/* ADAT channels are remapped */
279 	1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23,
280 	/* channels 12 and 13 are S/PDIF */
281 	24, 25,
282 	/* others don't exist */
283 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
284 };
285 
286 static char channel_map_9636_ds[26] = {
287 	/* ADAT channels are remapped */
288 	1, 3, 5, 7, 9, 11, 13, 15,
289 	/* channels 8 and 9 are S/PDIF */
290 	24, 25
291 	/* others don't exist */
292 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
293 };
294 
295 static int snd_hammerfall_get_buffer(struct pci_dev *pci, struct snd_dma_buffer *dmab, size_t size)
296 {
297 	dmab->dev.type = SNDRV_DMA_TYPE_DEV;
298 	dmab->dev.dev = snd_dma_pci_data(pci);
299 	if (snd_dma_get_reserved_buf(dmab, snd_dma_pci_buf_id(pci))) {
300 		if (dmab->bytes >= size)
301 			return 0;
302 	}
303 	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
304 				size, dmab) < 0)
305 		return -ENOMEM;
306 	return 0;
307 }
308 
309 static void snd_hammerfall_free_buffer(struct snd_dma_buffer *dmab, struct pci_dev *pci)
310 {
311 	if (dmab->area) {
312 		dmab->dev.dev = NULL; /* make it anonymous */
313 		snd_dma_reserve_buf(dmab, snd_dma_pci_buf_id(pci));
314 	}
315 }
316 
317 
318 static struct pci_device_id snd_rme9652_ids[] = {
319 	{
320 		.vendor	   = 0x10ee,
321 		.device	   = 0x3fc4,
322 		.subvendor = PCI_ANY_ID,
323 		.subdevice = PCI_ANY_ID,
324 	},	/* RME Digi9652 */
325 	{ 0, },
326 };
327 
328 MODULE_DEVICE_TABLE(pci, snd_rme9652_ids);
329 
330 static inline void rme9652_write(struct snd_rme9652 *rme9652, int reg, int val)
331 {
332 	writel(val, rme9652->iobase + reg);
333 }
334 
335 static inline unsigned int rme9652_read(struct snd_rme9652 *rme9652, int reg)
336 {
337 	return readl(rme9652->iobase + reg);
338 }
339 
340 static inline int snd_rme9652_use_is_exclusive(struct snd_rme9652 *rme9652)
341 {
342 	unsigned long flags;
343 	int ret = 1;
344 
345 	spin_lock_irqsave(&rme9652->lock, flags);
346 	if ((rme9652->playback_pid != rme9652->capture_pid) &&
347 	    (rme9652->playback_pid >= 0) && (rme9652->capture_pid >= 0)) {
348 		ret = 0;
349 	}
350 	spin_unlock_irqrestore(&rme9652->lock, flags);
351 	return ret;
352 }
353 
354 static inline int rme9652_adat_sample_rate(struct snd_rme9652 *rme9652)
355 {
356 	if (rme9652_running_double_speed(rme9652)) {
357 		return (rme9652_read(rme9652, RME9652_status_register) &
358 			RME9652_fs48) ? 96000 : 88200;
359 	} else {
360 		return (rme9652_read(rme9652, RME9652_status_register) &
361 			RME9652_fs48) ? 48000 : 44100;
362 	}
363 }
364 
365 static inline void rme9652_compute_period_size(struct snd_rme9652 *rme9652)
366 {
367 	unsigned int i;
368 
369 	i = rme9652->control_register & RME9652_latency;
370 	rme9652->period_bytes = 1 << ((rme9652_decode_latency(i) + 8));
371 	rme9652->hw_offsetmask =
372 		(rme9652->period_bytes * 2 - 1) & RME9652_buf_pos;
373 	rme9652->max_jitter = 80;
374 }
375 
376 static snd_pcm_uframes_t rme9652_hw_pointer(struct snd_rme9652 *rme9652)
377 {
378 	int status;
379 	unsigned int offset, frag;
380 	snd_pcm_uframes_t period_size = rme9652->period_bytes / 4;
381 	snd_pcm_sframes_t delta;
382 
383 	status = rme9652_read(rme9652, RME9652_status_register);
384 	if (!rme9652->precise_ptr)
385 		return (status & RME9652_buffer_id) ? period_size : 0;
386 	offset = status & RME9652_buf_pos;
387 
388 	/* The hardware may give a backward movement for up to 80 frames
389            Martin Kirst <martin.kirst@freenet.de> knows the details.
390 	*/
391 
392 	delta = rme9652->prev_hw_offset - offset;
393 	delta &= 0xffff;
394 	if (delta <= (snd_pcm_sframes_t)rme9652->max_jitter * 4)
395 		offset = rme9652->prev_hw_offset;
396 	else
397 		rme9652->prev_hw_offset = offset;
398 	offset &= rme9652->hw_offsetmask;
399 	offset /= 4;
400 	frag = status & RME9652_buffer_id;
401 
402 	if (offset < period_size) {
403 		if (offset > rme9652->max_jitter) {
404 			if (frag)
405 				printk(KERN_ERR "Unexpected hw_pointer position (bufid == 0): status: %x offset: %d\n", status, offset);
406 		} else if (!frag)
407 			return 0;
408 		offset -= rme9652->max_jitter;
409 		if ((int)offset < 0)
410 			offset += period_size * 2;
411 	} else {
412 		if (offset > period_size + rme9652->max_jitter) {
413 			if (!frag)
414 				printk(KERN_ERR "Unexpected hw_pointer position (bufid == 1): status: %x offset: %d\n", status, offset);
415 		} else if (frag)
416 			return period_size;
417 		offset -= rme9652->max_jitter;
418 	}
419 
420 	return offset;
421 }
422 
423 static inline void rme9652_reset_hw_pointer(struct snd_rme9652 *rme9652)
424 {
425 	int i;
426 
427 	/* reset the FIFO pointer to zero. We do this by writing to 8
428 	   registers, each of which is a 32bit wide register, and set
429 	   them all to zero. Note that s->iobase is a pointer to
430 	   int32, not pointer to char.
431 	*/
432 
433 	for (i = 0; i < 8; i++) {
434 		rme9652_write(rme9652, i * 4, 0);
435 		udelay(10);
436 	}
437 	rme9652->prev_hw_offset = 0;
438 }
439 
440 static inline void rme9652_start(struct snd_rme9652 *s)
441 {
442 	s->control_register |= (RME9652_IE | RME9652_start_bit);
443 	rme9652_write(s, RME9652_control_register, s->control_register);
444 }
445 
446 static inline void rme9652_stop(struct snd_rme9652 *s)
447 {
448 	s->control_register &= ~(RME9652_start_bit | RME9652_IE);
449 	rme9652_write(s, RME9652_control_register, s->control_register);
450 }
451 
452 static int rme9652_set_interrupt_interval(struct snd_rme9652 *s,
453 					  unsigned int frames)
454 {
455 	int restart = 0;
456 	int n;
457 
458 	spin_lock_irq(&s->lock);
459 
460 	if ((restart = s->running)) {
461 		rme9652_stop(s);
462 	}
463 
464 	frames >>= 7;
465 	n = 0;
466 	while (frames) {
467 		n++;
468 		frames >>= 1;
469 	}
470 
471 	s->control_register &= ~RME9652_latency;
472 	s->control_register |= rme9652_encode_latency(n);
473 
474 	rme9652_write(s, RME9652_control_register, s->control_register);
475 
476 	rme9652_compute_period_size(s);
477 
478 	if (restart)
479 		rme9652_start(s);
480 
481 	spin_unlock_irq(&s->lock);
482 
483 	return 0;
484 }
485 
486 static int rme9652_set_rate(struct snd_rme9652 *rme9652, int rate)
487 {
488 	int restart;
489 	int reject_if_open = 0;
490 	int xrate;
491 
492 	if (!snd_rme9652_use_is_exclusive (rme9652)) {
493 		return -EBUSY;
494 	}
495 
496 	/* Changing from a "single speed" to a "double speed" rate is
497 	   not allowed if any substreams are open. This is because
498 	   such a change causes a shift in the location of
499 	   the DMA buffers and a reduction in the number of available
500 	   buffers.
501 
502 	   Note that a similar but essentially insoluble problem
503 	   exists for externally-driven rate changes. All we can do
504 	   is to flag rate changes in the read/write routines.
505 	 */
506 
507 	spin_lock_irq(&rme9652->lock);
508 	xrate = rme9652_adat_sample_rate(rme9652);
509 
510 	switch (rate) {
511 	case 44100:
512 		if (xrate > 48000) {
513 			reject_if_open = 1;
514 		}
515 		rate = 0;
516 		break;
517 	case 48000:
518 		if (xrate > 48000) {
519 			reject_if_open = 1;
520 		}
521 		rate = RME9652_freq;
522 		break;
523 	case 88200:
524 		if (xrate < 48000) {
525 			reject_if_open = 1;
526 		}
527 		rate = RME9652_DS;
528 		break;
529 	case 96000:
530 		if (xrate < 48000) {
531 			reject_if_open = 1;
532 		}
533 		rate = RME9652_DS | RME9652_freq;
534 		break;
535 	default:
536 		spin_unlock_irq(&rme9652->lock);
537 		return -EINVAL;
538 	}
539 
540 	if (reject_if_open && (rme9652->capture_pid >= 0 || rme9652->playback_pid >= 0)) {
541 		spin_unlock_irq(&rme9652->lock);
542 		return -EBUSY;
543 	}
544 
545 	if ((restart = rme9652->running)) {
546 		rme9652_stop(rme9652);
547 	}
548 	rme9652->control_register &= ~(RME9652_freq | RME9652_DS);
549 	rme9652->control_register |= rate;
550 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
551 
552 	if (restart) {
553 		rme9652_start(rme9652);
554 	}
555 
556 	if (rate & RME9652_DS) {
557 		if (rme9652->ss_channels == RME9652_NCHANNELS) {
558 			rme9652->channel_map = channel_map_9652_ds;
559 		} else {
560 			rme9652->channel_map = channel_map_9636_ds;
561 		}
562 	} else {
563 		if (rme9652->ss_channels == RME9652_NCHANNELS) {
564 			rme9652->channel_map = channel_map_9652_ss;
565 		} else {
566 			rme9652->channel_map = channel_map_9636_ss;
567 		}
568 	}
569 
570 	spin_unlock_irq(&rme9652->lock);
571 	return 0;
572 }
573 
574 static void rme9652_set_thru(struct snd_rme9652 *rme9652, int channel, int enable)
575 {
576 	int i;
577 
578 	rme9652->passthru = 0;
579 
580 	if (channel < 0) {
581 
582 		/* set thru for all channels */
583 
584 		if (enable) {
585 			for (i = 0; i < RME9652_NCHANNELS; i++) {
586 				rme9652->thru_bits |= (1 << i);
587 				rme9652_write(rme9652, RME9652_thru_base + i * 4, 1);
588 			}
589 		} else {
590 			for (i = 0; i < RME9652_NCHANNELS; i++) {
591 				rme9652->thru_bits &= ~(1 << i);
592 				rme9652_write(rme9652, RME9652_thru_base + i * 4, 0);
593 			}
594 		}
595 
596 	} else {
597 		int mapped_channel;
598 
599 		snd_assert(channel == RME9652_NCHANNELS, return);
600 
601 		mapped_channel = rme9652->channel_map[channel];
602 
603 		if (enable) {
604 			rme9652->thru_bits |= (1 << mapped_channel);
605 		} else {
606 			rme9652->thru_bits &= ~(1 << mapped_channel);
607 		}
608 
609 		rme9652_write(rme9652,
610 			       RME9652_thru_base + mapped_channel * 4,
611 			       enable ? 1 : 0);
612 	}
613 }
614 
615 static int rme9652_set_passthru(struct snd_rme9652 *rme9652, int onoff)
616 {
617 	if (onoff) {
618 		rme9652_set_thru(rme9652, -1, 1);
619 
620 		/* we don't want interrupts, so do a
621 		   custom version of rme9652_start().
622 		*/
623 
624 		rme9652->control_register =
625 			RME9652_inp_0 |
626 			rme9652_encode_latency(7) |
627 			RME9652_start_bit;
628 
629 		rme9652_reset_hw_pointer(rme9652);
630 
631 		rme9652_write(rme9652, RME9652_control_register,
632 			      rme9652->control_register);
633 		rme9652->passthru = 1;
634 	} else {
635 		rme9652_set_thru(rme9652, -1, 0);
636 		rme9652_stop(rme9652);
637 		rme9652->passthru = 0;
638 	}
639 
640 	return 0;
641 }
642 
643 static void rme9652_spdif_set_bit (struct snd_rme9652 *rme9652, int mask, int onoff)
644 {
645 	if (onoff)
646 		rme9652->control_register |= mask;
647 	else
648 		rme9652->control_register &= ~mask;
649 
650 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
651 }
652 
653 static void rme9652_spdif_write_byte (struct snd_rme9652 *rme9652, const int val)
654 {
655 	long mask;
656 	long i;
657 
658 	for (i = 0, mask = 0x80; i < 8; i++, mask >>= 1) {
659 		if (val & mask)
660 			rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_WRITE, 1);
661 		else
662 			rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_WRITE, 0);
663 
664 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 1);
665 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 0);
666 	}
667 }
668 
669 static int rme9652_spdif_read_byte (struct snd_rme9652 *rme9652)
670 {
671 	long mask;
672 	long val;
673 	long i;
674 
675 	val = 0;
676 
677 	for (i = 0, mask = 0x80;  i < 8; i++, mask >>= 1) {
678 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 1);
679 		if (rme9652_read (rme9652, RME9652_status_register) & RME9652_SPDIF_READ)
680 			val |= mask;
681 		rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_CLOCK, 0);
682 	}
683 
684 	return val;
685 }
686 
687 static void rme9652_write_spdif_codec (struct snd_rme9652 *rme9652, const int address, const int data)
688 {
689 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
690 	rme9652_spdif_write_byte (rme9652, 0x20);
691 	rme9652_spdif_write_byte (rme9652, address);
692 	rme9652_spdif_write_byte (rme9652, data);
693 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
694 }
695 
696 
697 static int rme9652_spdif_read_codec (struct snd_rme9652 *rme9652, const int address)
698 {
699 	int ret;
700 
701 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
702 	rme9652_spdif_write_byte (rme9652, 0x20);
703 	rme9652_spdif_write_byte (rme9652, address);
704 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
705 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 1);
706 
707 	rme9652_spdif_write_byte (rme9652, 0x21);
708 	ret = rme9652_spdif_read_byte (rme9652);
709 	rme9652_spdif_set_bit (rme9652, RME9652_SPDIF_SELECT, 0);
710 
711 	return ret;
712 }
713 
714 static void rme9652_initialize_spdif_receiver (struct snd_rme9652 *rme9652)
715 {
716 	/* XXX what unsets this ? */
717 
718 	rme9652->control_register |= RME9652_SPDIF_RESET;
719 
720 	rme9652_write_spdif_codec (rme9652, 4, 0x40);
721 	rme9652_write_spdif_codec (rme9652, 17, 0x13);
722 	rme9652_write_spdif_codec (rme9652, 6, 0x02);
723 }
724 
725 static inline int rme9652_spdif_sample_rate(struct snd_rme9652 *s)
726 {
727 	unsigned int rate_bits;
728 
729 	if (rme9652_read(s, RME9652_status_register) & RME9652_ERF) {
730 		return -1;	/* error condition */
731 	}
732 
733 	if (s->hw_rev == 15) {
734 
735 		int x, y, ret;
736 
737 		x = rme9652_spdif_read_codec (s, 30);
738 
739 		if (x != 0)
740 			y = 48000 * 64 / x;
741 		else
742 			y = 0;
743 
744 		if      (y > 30400 && y < 33600)  ret = 32000;
745 		else if (y > 41900 && y < 46000)  ret = 44100;
746 		else if (y > 46000 && y < 50400)  ret = 48000;
747 		else if (y > 60800 && y < 67200)  ret = 64000;
748 		else if (y > 83700 && y < 92000)  ret = 88200;
749 		else if (y > 92000 && y < 100000) ret = 96000;
750 		else                              ret = 0;
751 		return ret;
752 	}
753 
754 	rate_bits = rme9652_read(s, RME9652_status_register) & RME9652_F;
755 
756 	switch (rme9652_decode_spdif_rate(rate_bits)) {
757 	case 0x7:
758 		return 32000;
759 		break;
760 
761 	case 0x6:
762 		return 44100;
763 		break;
764 
765 	case 0x5:
766 		return 48000;
767 		break;
768 
769 	case 0x4:
770 		return 88200;
771 		break;
772 
773 	case 0x3:
774 		return 96000;
775 		break;
776 
777 	case 0x0:
778 		return 64000;
779 		break;
780 
781 	default:
782 		snd_printk(KERN_ERR "%s: unknown S/PDIF input rate (bits = 0x%x)\n",
783 			   s->card_name, rate_bits);
784 		return 0;
785 		break;
786 	}
787 }
788 
789 /*-----------------------------------------------------------------------------
790   Control Interface
791   ----------------------------------------------------------------------------*/
792 
793 static u32 snd_rme9652_convert_from_aes(struct snd_aes_iec958 *aes)
794 {
795 	u32 val = 0;
796 	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME9652_PRO : 0;
797 	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME9652_Dolby : 0;
798 	if (val & RME9652_PRO)
799 		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME9652_EMP : 0;
800 	else
801 		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME9652_EMP : 0;
802 	return val;
803 }
804 
805 static void snd_rme9652_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)
806 {
807 	aes->status[0] = ((val & RME9652_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
808 			 ((val & RME9652_Dolby) ? IEC958_AES0_NONAUDIO : 0);
809 	if (val & RME9652_PRO)
810 		aes->status[0] |= (val & RME9652_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
811 	else
812 		aes->status[0] |= (val & RME9652_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
813 }
814 
815 static int snd_rme9652_control_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
816 {
817 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
818 	uinfo->count = 1;
819 	return 0;
820 }
821 
822 static int snd_rme9652_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
823 {
824 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
825 
826 	snd_rme9652_convert_to_aes(&ucontrol->value.iec958, rme9652->creg_spdif);
827 	return 0;
828 }
829 
830 static int snd_rme9652_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
831 {
832 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
833 	int change;
834 	u32 val;
835 
836 	val = snd_rme9652_convert_from_aes(&ucontrol->value.iec958);
837 	spin_lock_irq(&rme9652->lock);
838 	change = val != rme9652->creg_spdif;
839 	rme9652->creg_spdif = val;
840 	spin_unlock_irq(&rme9652->lock);
841 	return change;
842 }
843 
844 static int snd_rme9652_control_spdif_stream_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
845 {
846 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
847 	uinfo->count = 1;
848 	return 0;
849 }
850 
851 static int snd_rme9652_control_spdif_stream_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
852 {
853 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
854 
855 	snd_rme9652_convert_to_aes(&ucontrol->value.iec958, rme9652->creg_spdif_stream);
856 	return 0;
857 }
858 
859 static int snd_rme9652_control_spdif_stream_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
860 {
861 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
862 	int change;
863 	u32 val;
864 
865 	val = snd_rme9652_convert_from_aes(&ucontrol->value.iec958);
866 	spin_lock_irq(&rme9652->lock);
867 	change = val != rme9652->creg_spdif_stream;
868 	rme9652->creg_spdif_stream = val;
869 	rme9652->control_register &= ~(RME9652_PRO | RME9652_Dolby | RME9652_EMP);
870 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register |= val);
871 	spin_unlock_irq(&rme9652->lock);
872 	return change;
873 }
874 
875 static int snd_rme9652_control_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
876 {
877 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
878 	uinfo->count = 1;
879 	return 0;
880 }
881 
882 static int snd_rme9652_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
883 {
884 	ucontrol->value.iec958.status[0] = kcontrol->private_value;
885 	return 0;
886 }
887 
888 #define RME9652_ADAT1_IN(xname, xindex) \
889 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
890   .info = snd_rme9652_info_adat1_in, \
891   .get = snd_rme9652_get_adat1_in, \
892   .put = snd_rme9652_put_adat1_in }
893 
894 static unsigned int rme9652_adat1_in(struct snd_rme9652 *rme9652)
895 {
896 	if (rme9652->control_register & RME9652_ADAT1_INTERNAL)
897 		return 1;
898 	return 0;
899 }
900 
901 static int rme9652_set_adat1_input(struct snd_rme9652 *rme9652, int internal)
902 {
903 	int restart = 0;
904 
905 	if (internal) {
906 		rme9652->control_register |= RME9652_ADAT1_INTERNAL;
907 	} else {
908 		rme9652->control_register &= ~RME9652_ADAT1_INTERNAL;
909 	}
910 
911 	/* XXX do we actually need to stop the card when we do this ? */
912 
913 	if ((restart = rme9652->running)) {
914 		rme9652_stop(rme9652);
915 	}
916 
917 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
918 
919 	if (restart) {
920 		rme9652_start(rme9652);
921 	}
922 
923 	return 0;
924 }
925 
926 static int snd_rme9652_info_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
927 {
928 	static char *texts[2] = {"ADAT1", "Internal"};
929 
930 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
931 	uinfo->count = 1;
932 	uinfo->value.enumerated.items = 2;
933 	if (uinfo->value.enumerated.item > 1)
934 		uinfo->value.enumerated.item = 1;
935 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
936 	return 0;
937 }
938 
939 static int snd_rme9652_get_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
940 {
941 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
942 
943 	spin_lock_irq(&rme9652->lock);
944 	ucontrol->value.enumerated.item[0] = rme9652_adat1_in(rme9652);
945 	spin_unlock_irq(&rme9652->lock);
946 	return 0;
947 }
948 
949 static int snd_rme9652_put_adat1_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
950 {
951 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
952 	int change;
953 	unsigned int val;
954 
955 	if (!snd_rme9652_use_is_exclusive(rme9652))
956 		return -EBUSY;
957 	val = ucontrol->value.enumerated.item[0] % 2;
958 	spin_lock_irq(&rme9652->lock);
959 	change = val != rme9652_adat1_in(rme9652);
960 	if (change)
961 		rme9652_set_adat1_input(rme9652, val);
962 	spin_unlock_irq(&rme9652->lock);
963 	return change;
964 }
965 
966 #define RME9652_SPDIF_IN(xname, xindex) \
967 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
968   .info = snd_rme9652_info_spdif_in, \
969   .get = snd_rme9652_get_spdif_in, .put = snd_rme9652_put_spdif_in }
970 
971 static unsigned int rme9652_spdif_in(struct snd_rme9652 *rme9652)
972 {
973 	return rme9652_decode_spdif_in(rme9652->control_register &
974 				       RME9652_inp);
975 }
976 
977 static int rme9652_set_spdif_input(struct snd_rme9652 *rme9652, int in)
978 {
979 	int restart = 0;
980 
981 	rme9652->control_register &= ~RME9652_inp;
982 	rme9652->control_register |= rme9652_encode_spdif_in(in);
983 
984 	if ((restart = rme9652->running)) {
985 		rme9652_stop(rme9652);
986 	}
987 
988 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
989 
990 	if (restart) {
991 		rme9652_start(rme9652);
992 	}
993 
994 	return 0;
995 }
996 
997 static int snd_rme9652_info_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
998 {
999 	static char *texts[3] = {"ADAT1", "Coaxial", "Internal"};
1000 
1001 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1002 	uinfo->count = 1;
1003 	uinfo->value.enumerated.items = 3;
1004 	if (uinfo->value.enumerated.item > 2)
1005 		uinfo->value.enumerated.item = 2;
1006 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1007 	return 0;
1008 }
1009 
1010 static int snd_rme9652_get_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1011 {
1012 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1013 
1014 	spin_lock_irq(&rme9652->lock);
1015 	ucontrol->value.enumerated.item[0] = rme9652_spdif_in(rme9652);
1016 	spin_unlock_irq(&rme9652->lock);
1017 	return 0;
1018 }
1019 
1020 static int snd_rme9652_put_spdif_in(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1021 {
1022 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1023 	int change;
1024 	unsigned int val;
1025 
1026 	if (!snd_rme9652_use_is_exclusive(rme9652))
1027 		return -EBUSY;
1028 	val = ucontrol->value.enumerated.item[0] % 3;
1029 	spin_lock_irq(&rme9652->lock);
1030 	change = val != rme9652_spdif_in(rme9652);
1031 	if (change)
1032 		rme9652_set_spdif_input(rme9652, val);
1033 	spin_unlock_irq(&rme9652->lock);
1034 	return change;
1035 }
1036 
1037 #define RME9652_SPDIF_OUT(xname, xindex) \
1038 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1039   .info = snd_rme9652_info_spdif_out, \
1040   .get = snd_rme9652_get_spdif_out, .put = snd_rme9652_put_spdif_out }
1041 
1042 static int rme9652_spdif_out(struct snd_rme9652 *rme9652)
1043 {
1044 	return (rme9652->control_register & RME9652_opt_out) ? 1 : 0;
1045 }
1046 
1047 static int rme9652_set_spdif_output(struct snd_rme9652 *rme9652, int out)
1048 {
1049 	int restart = 0;
1050 
1051 	if (out) {
1052 		rme9652->control_register |= RME9652_opt_out;
1053 	} else {
1054 		rme9652->control_register &= ~RME9652_opt_out;
1055 	}
1056 
1057 	if ((restart = rme9652->running)) {
1058 		rme9652_stop(rme9652);
1059 	}
1060 
1061 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1062 
1063 	if (restart) {
1064 		rme9652_start(rme9652);
1065 	}
1066 
1067 	return 0;
1068 }
1069 
1070 #define snd_rme9652_info_spdif_out	snd_ctl_boolean_mono_info
1071 
1072 static int snd_rme9652_get_spdif_out(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1073 {
1074 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1075 
1076 	spin_lock_irq(&rme9652->lock);
1077 	ucontrol->value.integer.value[0] = rme9652_spdif_out(rme9652);
1078 	spin_unlock_irq(&rme9652->lock);
1079 	return 0;
1080 }
1081 
1082 static int snd_rme9652_put_spdif_out(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1083 {
1084 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1085 	int change;
1086 	unsigned int val;
1087 
1088 	if (!snd_rme9652_use_is_exclusive(rme9652))
1089 		return -EBUSY;
1090 	val = ucontrol->value.integer.value[0] & 1;
1091 	spin_lock_irq(&rme9652->lock);
1092 	change = (int)val != rme9652_spdif_out(rme9652);
1093 	rme9652_set_spdif_output(rme9652, val);
1094 	spin_unlock_irq(&rme9652->lock);
1095 	return change;
1096 }
1097 
1098 #define RME9652_SYNC_MODE(xname, xindex) \
1099 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1100   .info = snd_rme9652_info_sync_mode, \
1101   .get = snd_rme9652_get_sync_mode, .put = snd_rme9652_put_sync_mode }
1102 
1103 static int rme9652_sync_mode(struct snd_rme9652 *rme9652)
1104 {
1105 	if (rme9652->control_register & RME9652_wsel) {
1106 		return 2;
1107 	} else if (rme9652->control_register & RME9652_Master) {
1108 		return 1;
1109 	} else {
1110 		return 0;
1111 	}
1112 }
1113 
1114 static int rme9652_set_sync_mode(struct snd_rme9652 *rme9652, int mode)
1115 {
1116 	int restart = 0;
1117 
1118 	switch (mode) {
1119 	case 0:
1120 		rme9652->control_register &=
1121 		    ~(RME9652_Master | RME9652_wsel);
1122 		break;
1123 	case 1:
1124 		rme9652->control_register =
1125 		    (rme9652->control_register & ~RME9652_wsel) | RME9652_Master;
1126 		break;
1127 	case 2:
1128 		rme9652->control_register |=
1129 		    (RME9652_Master | RME9652_wsel);
1130 		break;
1131 	}
1132 
1133 	if ((restart = rme9652->running)) {
1134 		rme9652_stop(rme9652);
1135 	}
1136 
1137 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1138 
1139 	if (restart) {
1140 		rme9652_start(rme9652);
1141 	}
1142 
1143 	return 0;
1144 }
1145 
1146 static int snd_rme9652_info_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1147 {
1148 	static char *texts[3] = {"AutoSync", "Master", "Word Clock"};
1149 
1150 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1151 	uinfo->count = 1;
1152 	uinfo->value.enumerated.items = 3;
1153 	if (uinfo->value.enumerated.item > 2)
1154 		uinfo->value.enumerated.item = 2;
1155 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1156 	return 0;
1157 }
1158 
1159 static int snd_rme9652_get_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1160 {
1161 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1162 
1163 	spin_lock_irq(&rme9652->lock);
1164 	ucontrol->value.enumerated.item[0] = rme9652_sync_mode(rme9652);
1165 	spin_unlock_irq(&rme9652->lock);
1166 	return 0;
1167 }
1168 
1169 static int snd_rme9652_put_sync_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1170 {
1171 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1172 	int change;
1173 	unsigned int val;
1174 
1175 	val = ucontrol->value.enumerated.item[0] % 3;
1176 	spin_lock_irq(&rme9652->lock);
1177 	change = (int)val != rme9652_sync_mode(rme9652);
1178 	rme9652_set_sync_mode(rme9652, val);
1179 	spin_unlock_irq(&rme9652->lock);
1180 	return change;
1181 }
1182 
1183 #define RME9652_SYNC_PREF(xname, xindex) \
1184 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1185   .info = snd_rme9652_info_sync_pref, \
1186   .get = snd_rme9652_get_sync_pref, .put = snd_rme9652_put_sync_pref }
1187 
1188 static int rme9652_sync_pref(struct snd_rme9652 *rme9652)
1189 {
1190 	switch (rme9652->control_register & RME9652_SyncPref_Mask) {
1191 	case RME9652_SyncPref_ADAT1:
1192 		return RME9652_SYNC_FROM_ADAT1;
1193 	case RME9652_SyncPref_ADAT2:
1194 		return RME9652_SYNC_FROM_ADAT2;
1195 	case RME9652_SyncPref_ADAT3:
1196 		return RME9652_SYNC_FROM_ADAT3;
1197 	case RME9652_SyncPref_SPDIF:
1198 		return RME9652_SYNC_FROM_SPDIF;
1199 	}
1200 	/* Not reachable */
1201 	return 0;
1202 }
1203 
1204 static int rme9652_set_sync_pref(struct snd_rme9652 *rme9652, int pref)
1205 {
1206 	int restart;
1207 
1208 	rme9652->control_register &= ~RME9652_SyncPref_Mask;
1209 	switch (pref) {
1210 	case RME9652_SYNC_FROM_ADAT1:
1211 		rme9652->control_register |= RME9652_SyncPref_ADAT1;
1212 		break;
1213 	case RME9652_SYNC_FROM_ADAT2:
1214 		rme9652->control_register |= RME9652_SyncPref_ADAT2;
1215 		break;
1216 	case RME9652_SYNC_FROM_ADAT3:
1217 		rme9652->control_register |= RME9652_SyncPref_ADAT3;
1218 		break;
1219 	case RME9652_SYNC_FROM_SPDIF:
1220 		rme9652->control_register |= RME9652_SyncPref_SPDIF;
1221 		break;
1222 	}
1223 
1224 	if ((restart = rme9652->running)) {
1225 		rme9652_stop(rme9652);
1226 	}
1227 
1228 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1229 
1230 	if (restart) {
1231 		rme9652_start(rme9652);
1232 	}
1233 
1234 	return 0;
1235 }
1236 
1237 static int snd_rme9652_info_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1238 {
1239 	static char *texts[4] = {"IEC958 In", "ADAT1 In", "ADAT2 In", "ADAT3 In"};
1240 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1241 
1242 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1243 	uinfo->count = 1;
1244 	uinfo->value.enumerated.items = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 3;
1245 	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
1246 		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
1247 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1248 	return 0;
1249 }
1250 
1251 static int snd_rme9652_get_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1252 {
1253 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1254 
1255 	spin_lock_irq(&rme9652->lock);
1256 	ucontrol->value.enumerated.item[0] = rme9652_sync_pref(rme9652);
1257 	spin_unlock_irq(&rme9652->lock);
1258 	return 0;
1259 }
1260 
1261 static int snd_rme9652_put_sync_pref(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1262 {
1263 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1264 	int change, max;
1265 	unsigned int val;
1266 
1267 	if (!snd_rme9652_use_is_exclusive(rme9652))
1268 		return -EBUSY;
1269 	max = rme9652->ss_channels == RME9652_NCHANNELS ? 4 : 3;
1270 	val = ucontrol->value.enumerated.item[0] % max;
1271 	spin_lock_irq(&rme9652->lock);
1272 	change = (int)val != rme9652_sync_pref(rme9652);
1273 	rme9652_set_sync_pref(rme9652, val);
1274 	spin_unlock_irq(&rme9652->lock);
1275 	return change;
1276 }
1277 
1278 static int snd_rme9652_info_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1279 {
1280 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1281 	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
1282 	uinfo->count = rme9652->ss_channels;
1283 	uinfo->value.integer.min = 0;
1284 	uinfo->value.integer.max = 1;
1285 	return 0;
1286 }
1287 
1288 static int snd_rme9652_get_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1289 {
1290 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1291 	unsigned int k;
1292 	u32 thru_bits = rme9652->thru_bits;
1293 
1294 	for (k = 0; k < rme9652->ss_channels; ++k) {
1295 		ucontrol->value.integer.value[k] = !!(thru_bits & (1 << k));
1296 	}
1297 	return 0;
1298 }
1299 
1300 static int snd_rme9652_put_thru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1301 {
1302 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1303 	int change;
1304 	unsigned int chn;
1305 	u32 thru_bits = 0;
1306 
1307 	if (!snd_rme9652_use_is_exclusive(rme9652))
1308 		return -EBUSY;
1309 
1310 	for (chn = 0; chn < rme9652->ss_channels; ++chn) {
1311 		if (ucontrol->value.integer.value[chn])
1312 			thru_bits |= 1 << chn;
1313 	}
1314 
1315 	spin_lock_irq(&rme9652->lock);
1316 	change = thru_bits ^ rme9652->thru_bits;
1317 	if (change) {
1318 		for (chn = 0; chn < rme9652->ss_channels; ++chn) {
1319 			if (!(change & (1 << chn)))
1320 				continue;
1321 			rme9652_set_thru(rme9652,chn,thru_bits&(1<<chn));
1322 		}
1323 	}
1324 	spin_unlock_irq(&rme9652->lock);
1325 	return !!change;
1326 }
1327 
1328 #define RME9652_PASSTHRU(xname, xindex) \
1329 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1330   .info = snd_rme9652_info_passthru, \
1331   .put = snd_rme9652_put_passthru, \
1332   .get = snd_rme9652_get_passthru }
1333 
1334 #define snd_rme9652_info_passthru	snd_ctl_boolean_mono_info
1335 
1336 static int snd_rme9652_get_passthru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1337 {
1338 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1339 
1340 	spin_lock_irq(&rme9652->lock);
1341 	ucontrol->value.integer.value[0] = rme9652->passthru;
1342 	spin_unlock_irq(&rme9652->lock);
1343 	return 0;
1344 }
1345 
1346 static int snd_rme9652_put_passthru(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1347 {
1348 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1349 	int change;
1350 	unsigned int val;
1351 	int err = 0;
1352 
1353 	if (!snd_rme9652_use_is_exclusive(rme9652))
1354 		return -EBUSY;
1355 
1356 	val = ucontrol->value.integer.value[0] & 1;
1357 	spin_lock_irq(&rme9652->lock);
1358 	change = (ucontrol->value.integer.value[0] != rme9652->passthru);
1359 	if (change)
1360 		err = rme9652_set_passthru(rme9652, val);
1361 	spin_unlock_irq(&rme9652->lock);
1362 	return err ? err : change;
1363 }
1364 
1365 /* Read-only switches */
1366 
1367 #define RME9652_SPDIF_RATE(xname, xindex) \
1368 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1369   .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
1370   .info = snd_rme9652_info_spdif_rate, \
1371   .get = snd_rme9652_get_spdif_rate }
1372 
1373 static int snd_rme9652_info_spdif_rate(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1374 {
1375 	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
1376 	uinfo->count = 1;
1377 	uinfo->value.integer.min = 0;
1378 	uinfo->value.integer.max = 96000;
1379 	return 0;
1380 }
1381 
1382 static int snd_rme9652_get_spdif_rate(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1383 {
1384 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1385 
1386 	spin_lock_irq(&rme9652->lock);
1387 	ucontrol->value.integer.value[0] = rme9652_spdif_sample_rate(rme9652);
1388 	spin_unlock_irq(&rme9652->lock);
1389 	return 0;
1390 }
1391 
1392 #define RME9652_ADAT_SYNC(xname, xindex, xidx) \
1393 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1394   .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
1395   .info = snd_rme9652_info_adat_sync, \
1396   .get = snd_rme9652_get_adat_sync, .private_value = xidx }
1397 
1398 static int snd_rme9652_info_adat_sync(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1399 {
1400 	static char *texts[4] = {"No Lock", "Lock", "No Lock Sync", "Lock Sync"};
1401 
1402 	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
1403 	uinfo->count = 1;
1404 	uinfo->value.enumerated.items = 4;
1405 	if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items)
1406 		uinfo->value.enumerated.item = uinfo->value.enumerated.items - 1;
1407 	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
1408 	return 0;
1409 }
1410 
1411 static int snd_rme9652_get_adat_sync(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1412 {
1413 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1414 	unsigned int mask1, mask2, val;
1415 
1416 	switch (kcontrol->private_value) {
1417 	case 0: mask1 = RME9652_lock_0; mask2 = RME9652_sync_0; break;
1418 	case 1: mask1 = RME9652_lock_1; mask2 = RME9652_sync_1; break;
1419 	case 2: mask1 = RME9652_lock_2; mask2 = RME9652_sync_2; break;
1420 	default: return -EINVAL;
1421 	}
1422 	val = rme9652_read(rme9652, RME9652_status_register);
1423 	ucontrol->value.enumerated.item[0] = (val & mask1) ? 1 : 0;
1424 	ucontrol->value.enumerated.item[0] |= (val & mask2) ? 2 : 0;
1425 	return 0;
1426 }
1427 
1428 #define RME9652_TC_VALID(xname, xindex) \
1429 { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
1430   .access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE, \
1431   .info = snd_rme9652_info_tc_valid, \
1432   .get = snd_rme9652_get_tc_valid }
1433 
1434 #define snd_rme9652_info_tc_valid	snd_ctl_boolean_mono_info
1435 
1436 static int snd_rme9652_get_tc_valid(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1437 {
1438 	struct snd_rme9652 *rme9652 = snd_kcontrol_chip(kcontrol);
1439 
1440 	ucontrol->value.integer.value[0] =
1441 		(rme9652_read(rme9652, RME9652_status_register) & RME9652_tc_valid) ? 1 : 0;
1442 	return 0;
1443 }
1444 
1445 #ifdef ALSA_HAS_STANDARD_WAY_OF_RETURNING_TIMECODE
1446 
1447 /* FIXME: this routine needs a port to the new control API --jk */
1448 
1449 static int snd_rme9652_get_tc_value(void *private_data,
1450 				    snd_kswitch_t *kswitch,
1451 				    snd_switch_t *uswitch)
1452 {
1453 	struct snd_rme9652 *s = (struct snd_rme9652 *) private_data;
1454 	u32 value;
1455 	int i;
1456 
1457 	uswitch->type = SNDRV_SW_TYPE_DWORD;
1458 
1459 	if ((rme9652_read(s, RME9652_status_register) &
1460 	     RME9652_tc_valid) == 0) {
1461 		uswitch->value.data32[0] = 0;
1462 		return 0;
1463 	}
1464 
1465 	/* timecode request */
1466 
1467 	rme9652_write(s, RME9652_time_code, 0);
1468 
1469 	/* XXX bug alert: loop-based timing !!!! */
1470 
1471 	for (i = 0; i < 50; i++) {
1472 		if (!(rme9652_read(s, i * 4) & RME9652_tc_busy))
1473 			break;
1474 	}
1475 
1476 	if (!(rme9652_read(s, i * 4) & RME9652_tc_busy)) {
1477 		return -EIO;
1478 	}
1479 
1480 	value = 0;
1481 
1482 	for (i = 0; i < 32; i++) {
1483 		value >>= 1;
1484 
1485 		if (rme9652_read(s, i * 4) & RME9652_tc_out)
1486 			value |= 0x80000000;
1487 	}
1488 
1489 	if (value > 2 * 60 * 48000) {
1490 		value -= 2 * 60 * 48000;
1491 	} else {
1492 		value = 0;
1493 	}
1494 
1495 	uswitch->value.data32[0] = value;
1496 
1497 	return 0;
1498 }
1499 
1500 #endif				/* ALSA_HAS_STANDARD_WAY_OF_RETURNING_TIMECODE */
1501 
1502 static struct snd_kcontrol_new snd_rme9652_controls[] = {
1503 {
1504 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1505 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
1506 	.info =		snd_rme9652_control_spdif_info,
1507 	.get =		snd_rme9652_control_spdif_get,
1508 	.put =		snd_rme9652_control_spdif_put,
1509 },
1510 {
1511 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
1512 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1513 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
1514 	.info =		snd_rme9652_control_spdif_stream_info,
1515 	.get =		snd_rme9652_control_spdif_stream_get,
1516 	.put =		snd_rme9652_control_spdif_stream_put,
1517 },
1518 {
1519 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
1520 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1521 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
1522 	.info =		snd_rme9652_control_spdif_mask_info,
1523 	.get =		snd_rme9652_control_spdif_mask_get,
1524 	.private_value = IEC958_AES0_NONAUDIO |
1525 			IEC958_AES0_PROFESSIONAL |
1526 			IEC958_AES0_CON_EMPHASIS,
1527 },
1528 {
1529 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
1530 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
1531 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
1532 	.info =		snd_rme9652_control_spdif_mask_info,
1533 	.get =		snd_rme9652_control_spdif_mask_get,
1534 	.private_value = IEC958_AES0_NONAUDIO |
1535 			IEC958_AES0_PROFESSIONAL |
1536 			IEC958_AES0_PRO_EMPHASIS,
1537 },
1538 RME9652_SPDIF_IN("IEC958 Input Connector", 0),
1539 RME9652_SPDIF_OUT("IEC958 Output also on ADAT1", 0),
1540 RME9652_SYNC_MODE("Sync Mode", 0),
1541 RME9652_SYNC_PREF("Preferred Sync Source", 0),
1542 {
1543 	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
1544 	.name = "Channels Thru",
1545 	.index = 0,
1546 	.info = snd_rme9652_info_thru,
1547 	.get = snd_rme9652_get_thru,
1548 	.put = snd_rme9652_put_thru,
1549 },
1550 RME9652_SPDIF_RATE("IEC958 Sample Rate", 0),
1551 RME9652_ADAT_SYNC("ADAT1 Sync Check", 0, 0),
1552 RME9652_ADAT_SYNC("ADAT2 Sync Check", 0, 1),
1553 RME9652_TC_VALID("Timecode Valid", 0),
1554 RME9652_PASSTHRU("Passthru", 0)
1555 };
1556 
1557 static struct snd_kcontrol_new snd_rme9652_adat3_check =
1558 RME9652_ADAT_SYNC("ADAT3 Sync Check", 0, 2);
1559 
1560 static struct snd_kcontrol_new snd_rme9652_adat1_input =
1561 RME9652_ADAT1_IN("ADAT1 Input Source", 0);
1562 
1563 static int snd_rme9652_create_controls(struct snd_card *card, struct snd_rme9652 *rme9652)
1564 {
1565 	unsigned int idx;
1566 	int err;
1567 	struct snd_kcontrol *kctl;
1568 
1569 	for (idx = 0; idx < ARRAY_SIZE(snd_rme9652_controls); idx++) {
1570 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_controls[idx], rme9652))) < 0)
1571 			return err;
1572 		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
1573 			rme9652->spdif_ctl = kctl;
1574 	}
1575 
1576 	if (rme9652->ss_channels == RME9652_NCHANNELS)
1577 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_adat3_check, rme9652))) < 0)
1578 			return err;
1579 
1580 	if (rme9652->hw_rev >= 15)
1581 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme9652_adat1_input, rme9652))) < 0)
1582 			return err;
1583 
1584 	return 0;
1585 }
1586 
1587 /*------------------------------------------------------------
1588    /proc interface
1589  ------------------------------------------------------------*/
1590 
1591 static void
1592 snd_rme9652_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1593 {
1594 	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) entry->private_data;
1595 	u32 thru_bits = rme9652->thru_bits;
1596 	int show_auto_sync_source = 0;
1597 	int i;
1598 	unsigned int status;
1599 	int x;
1600 
1601 	status = rme9652_read(rme9652, RME9652_status_register);
1602 
1603 	snd_iprintf(buffer, "%s (Card #%d)\n", rme9652->card_name, rme9652->card->number + 1);
1604 	snd_iprintf(buffer, "Buffers: capture %p playback %p\n",
1605 		    rme9652->capture_buffer, rme9652->playback_buffer);
1606 	snd_iprintf(buffer, "IRQ: %d Registers bus: 0x%lx VM: 0x%lx\n",
1607 		    rme9652->irq, rme9652->port, (unsigned long)rme9652->iobase);
1608 	snd_iprintf(buffer, "Control register: %x\n", rme9652->control_register);
1609 
1610 	snd_iprintf(buffer, "\n");
1611 
1612 	x = 1 << (6 + rme9652_decode_latency(rme9652->control_register &
1613 					     RME9652_latency));
1614 
1615 	snd_iprintf(buffer, "Latency: %d samples (2 periods of %lu bytes)\n",
1616 		    x, (unsigned long) rme9652->period_bytes);
1617 	snd_iprintf(buffer, "Hardware pointer (frames): %ld\n",
1618 		    rme9652_hw_pointer(rme9652));
1619 	snd_iprintf(buffer, "Passthru: %s\n",
1620 		    rme9652->passthru ? "yes" : "no");
1621 
1622 	if ((rme9652->control_register & (RME9652_Master | RME9652_wsel)) == 0) {
1623 		snd_iprintf(buffer, "Clock mode: autosync\n");
1624 		show_auto_sync_source = 1;
1625 	} else if (rme9652->control_register & RME9652_wsel) {
1626 		if (status & RME9652_wsel_rd) {
1627 			snd_iprintf(buffer, "Clock mode: word clock\n");
1628 		} else {
1629 			snd_iprintf(buffer, "Clock mode: word clock (no signal)\n");
1630 		}
1631 	} else {
1632 		snd_iprintf(buffer, "Clock mode: master\n");
1633 	}
1634 
1635 	if (show_auto_sync_source) {
1636 		switch (rme9652->control_register & RME9652_SyncPref_Mask) {
1637 		case RME9652_SyncPref_ADAT1:
1638 			snd_iprintf(buffer, "Pref. sync source: ADAT1\n");
1639 			break;
1640 		case RME9652_SyncPref_ADAT2:
1641 			snd_iprintf(buffer, "Pref. sync source: ADAT2\n");
1642 			break;
1643 		case RME9652_SyncPref_ADAT3:
1644 			snd_iprintf(buffer, "Pref. sync source: ADAT3\n");
1645 			break;
1646 		case RME9652_SyncPref_SPDIF:
1647 			snd_iprintf(buffer, "Pref. sync source: IEC958\n");
1648 			break;
1649 		default:
1650 			snd_iprintf(buffer, "Pref. sync source: ???\n");
1651 		}
1652 	}
1653 
1654 	if (rme9652->hw_rev >= 15)
1655 		snd_iprintf(buffer, "\nADAT1 Input source: %s\n",
1656 			    (rme9652->control_register & RME9652_ADAT1_INTERNAL) ?
1657 			    "Internal" : "ADAT1 optical");
1658 
1659 	snd_iprintf(buffer, "\n");
1660 
1661 	switch (rme9652_decode_spdif_in(rme9652->control_register &
1662 					RME9652_inp)) {
1663 	case RME9652_SPDIFIN_OPTICAL:
1664 		snd_iprintf(buffer, "IEC958 input: ADAT1\n");
1665 		break;
1666 	case RME9652_SPDIFIN_COAXIAL:
1667 		snd_iprintf(buffer, "IEC958 input: Coaxial\n");
1668 		break;
1669 	case RME9652_SPDIFIN_INTERN:
1670 		snd_iprintf(buffer, "IEC958 input: Internal\n");
1671 		break;
1672 	default:
1673 		snd_iprintf(buffer, "IEC958 input: ???\n");
1674 		break;
1675 	}
1676 
1677 	if (rme9652->control_register & RME9652_opt_out) {
1678 		snd_iprintf(buffer, "IEC958 output: Coaxial & ADAT1\n");
1679 	} else {
1680 		snd_iprintf(buffer, "IEC958 output: Coaxial only\n");
1681 	}
1682 
1683 	if (rme9652->control_register & RME9652_PRO) {
1684 		snd_iprintf(buffer, "IEC958 quality: Professional\n");
1685 	} else {
1686 		snd_iprintf(buffer, "IEC958 quality: Consumer\n");
1687 	}
1688 
1689 	if (rme9652->control_register & RME9652_EMP) {
1690 		snd_iprintf(buffer, "IEC958 emphasis: on\n");
1691 	} else {
1692 		snd_iprintf(buffer, "IEC958 emphasis: off\n");
1693 	}
1694 
1695 	if (rme9652->control_register & RME9652_Dolby) {
1696 		snd_iprintf(buffer, "IEC958 Dolby: on\n");
1697 	} else {
1698 		snd_iprintf(buffer, "IEC958 Dolby: off\n");
1699 	}
1700 
1701 	i = rme9652_spdif_sample_rate(rme9652);
1702 
1703 	if (i < 0) {
1704 		snd_iprintf(buffer,
1705 			    "IEC958 sample rate: error flag set\n");
1706 	} else if (i == 0) {
1707 		snd_iprintf(buffer, "IEC958 sample rate: undetermined\n");
1708 	} else {
1709 		snd_iprintf(buffer, "IEC958 sample rate: %d\n", i);
1710 	}
1711 
1712 	snd_iprintf(buffer, "\n");
1713 
1714 	snd_iprintf(buffer, "ADAT Sample rate: %dHz\n",
1715 		    rme9652_adat_sample_rate(rme9652));
1716 
1717 	/* Sync Check */
1718 
1719 	x = status & RME9652_sync_0;
1720 	if (status & RME9652_lock_0) {
1721 		snd_iprintf(buffer, "ADAT1: %s\n", x ? "Sync" : "Lock");
1722 	} else {
1723 		snd_iprintf(buffer, "ADAT1: No Lock\n");
1724 	}
1725 
1726 	x = status & RME9652_sync_1;
1727 	if (status & RME9652_lock_1) {
1728 		snd_iprintf(buffer, "ADAT2: %s\n", x ? "Sync" : "Lock");
1729 	} else {
1730 		snd_iprintf(buffer, "ADAT2: No Lock\n");
1731 	}
1732 
1733 	x = status & RME9652_sync_2;
1734 	if (status & RME9652_lock_2) {
1735 		snd_iprintf(buffer, "ADAT3: %s\n", x ? "Sync" : "Lock");
1736 	} else {
1737 		snd_iprintf(buffer, "ADAT3: No Lock\n");
1738 	}
1739 
1740 	snd_iprintf(buffer, "\n");
1741 
1742 	snd_iprintf(buffer, "Timecode signal: %s\n",
1743 		    (status & RME9652_tc_valid) ? "yes" : "no");
1744 
1745 	/* thru modes */
1746 
1747 	snd_iprintf(buffer, "Punch Status:\n\n");
1748 
1749 	for (i = 0; i < rme9652->ss_channels; i++) {
1750 		if (thru_bits & (1 << i)) {
1751 			snd_iprintf(buffer, "%2d:  on ", i + 1);
1752 		} else {
1753 			snd_iprintf(buffer, "%2d: off ", i + 1);
1754 		}
1755 
1756 		if (((i + 1) % 8) == 0) {
1757 			snd_iprintf(buffer, "\n");
1758 		}
1759 	}
1760 
1761 	snd_iprintf(buffer, "\n");
1762 }
1763 
1764 static void __devinit snd_rme9652_proc_init(struct snd_rme9652 *rme9652)
1765 {
1766 	struct snd_info_entry *entry;
1767 
1768 	if (! snd_card_proc_new(rme9652->card, "rme9652", &entry))
1769 		snd_info_set_text_ops(entry, rme9652, snd_rme9652_proc_read);
1770 }
1771 
1772 static void snd_rme9652_free_buffers(struct snd_rme9652 *rme9652)
1773 {
1774 	snd_hammerfall_free_buffer(&rme9652->capture_dma_buf, rme9652->pci);
1775 	snd_hammerfall_free_buffer(&rme9652->playback_dma_buf, rme9652->pci);
1776 }
1777 
1778 static int snd_rme9652_free(struct snd_rme9652 *rme9652)
1779 {
1780 	if (rme9652->irq >= 0)
1781 		rme9652_stop(rme9652);
1782 	snd_rme9652_free_buffers(rme9652);
1783 
1784 	if (rme9652->irq >= 0)
1785 		free_irq(rme9652->irq, (void *)rme9652);
1786 	if (rme9652->iobase)
1787 		iounmap(rme9652->iobase);
1788 	if (rme9652->port)
1789 		pci_release_regions(rme9652->pci);
1790 
1791 	pci_disable_device(rme9652->pci);
1792 	return 0;
1793 }
1794 
1795 static int __devinit snd_rme9652_initialize_memory(struct snd_rme9652 *rme9652)
1796 {
1797 	unsigned long pb_bus, cb_bus;
1798 
1799 	if (snd_hammerfall_get_buffer(rme9652->pci, &rme9652->capture_dma_buf, RME9652_DMA_AREA_BYTES) < 0 ||
1800 	    snd_hammerfall_get_buffer(rme9652->pci, &rme9652->playback_dma_buf, RME9652_DMA_AREA_BYTES) < 0) {
1801 		if (rme9652->capture_dma_buf.area)
1802 			snd_dma_free_pages(&rme9652->capture_dma_buf);
1803 		printk(KERN_ERR "%s: no buffers available\n", rme9652->card_name);
1804 		return -ENOMEM;
1805 	}
1806 
1807 	/* Align to bus-space 64K boundary */
1808 
1809 	cb_bus = ALIGN(rme9652->capture_dma_buf.addr, 0x10000ul);
1810 	pb_bus = ALIGN(rme9652->playback_dma_buf.addr, 0x10000ul);
1811 
1812 	/* Tell the card where it is */
1813 
1814 	rme9652_write(rme9652, RME9652_rec_buffer, cb_bus);
1815 	rme9652_write(rme9652, RME9652_play_buffer, pb_bus);
1816 
1817 	rme9652->capture_buffer = rme9652->capture_dma_buf.area + (cb_bus - rme9652->capture_dma_buf.addr);
1818 	rme9652->playback_buffer = rme9652->playback_dma_buf.area + (pb_bus - rme9652->playback_dma_buf.addr);
1819 
1820 	return 0;
1821 }
1822 
1823 static void snd_rme9652_set_defaults(struct snd_rme9652 *rme9652)
1824 {
1825 	unsigned int k;
1826 
1827 	/* ASSUMPTION: rme9652->lock is either held, or
1828 	   there is no need to hold it (e.g. during module
1829 	   initalization).
1830 	 */
1831 
1832 	/* set defaults:
1833 
1834 	   SPDIF Input via Coax
1835 	   autosync clock mode
1836 	   maximum latency (7 = 8192 samples, 64Kbyte buffer,
1837 	   which implies 2 4096 sample, 32Kbyte periods).
1838 
1839 	   if rev 1.5, initialize the S/PDIF receiver.
1840 
1841 	 */
1842 
1843 	rme9652->control_register =
1844 	    RME9652_inp_0 | rme9652_encode_latency(7);
1845 
1846 	rme9652_write(rme9652, RME9652_control_register, rme9652->control_register);
1847 
1848 	rme9652_reset_hw_pointer(rme9652);
1849 	rme9652_compute_period_size(rme9652);
1850 
1851 	/* default: thru off for all channels */
1852 
1853 	for (k = 0; k < RME9652_NCHANNELS; ++k)
1854 		rme9652_write(rme9652, RME9652_thru_base + k * 4, 0);
1855 
1856 	rme9652->thru_bits = 0;
1857 	rme9652->passthru = 0;
1858 
1859 	/* set a default rate so that the channel map is set up */
1860 
1861 	rme9652_set_rate(rme9652, 48000);
1862 }
1863 
1864 static irqreturn_t snd_rme9652_interrupt(int irq, void *dev_id)
1865 {
1866 	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) dev_id;
1867 
1868 	if (!(rme9652_read(rme9652, RME9652_status_register) & RME9652_IRQ)) {
1869 		return IRQ_NONE;
1870 	}
1871 
1872 	rme9652_write(rme9652, RME9652_irq_clear, 0);
1873 
1874 	if (rme9652->capture_substream) {
1875 		snd_pcm_period_elapsed(rme9652->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);
1876 	}
1877 
1878 	if (rme9652->playback_substream) {
1879 		snd_pcm_period_elapsed(rme9652->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream);
1880 	}
1881 	return IRQ_HANDLED;
1882 }
1883 
1884 static snd_pcm_uframes_t snd_rme9652_hw_pointer(struct snd_pcm_substream *substream)
1885 {
1886 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1887 	return rme9652_hw_pointer(rme9652);
1888 }
1889 
1890 static char *rme9652_channel_buffer_location(struct snd_rme9652 *rme9652,
1891 					     int stream,
1892 					     int channel)
1893 
1894 {
1895 	int mapped_channel;
1896 
1897         snd_assert(channel >= 0 || channel < RME9652_NCHANNELS, return NULL);
1898 
1899 	if ((mapped_channel = rme9652->channel_map[channel]) < 0) {
1900 		return NULL;
1901 	}
1902 
1903 	if (stream == SNDRV_PCM_STREAM_CAPTURE) {
1904 		return rme9652->capture_buffer +
1905 			(mapped_channel * RME9652_CHANNEL_BUFFER_BYTES);
1906 	} else {
1907 		return rme9652->playback_buffer +
1908 			(mapped_channel * RME9652_CHANNEL_BUFFER_BYTES);
1909 	}
1910 }
1911 
1912 static int snd_rme9652_playback_copy(struct snd_pcm_substream *substream, int channel,
1913 				     snd_pcm_uframes_t pos, void __user *src, snd_pcm_uframes_t count)
1914 {
1915 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1916 	char *channel_buf;
1917 
1918 	snd_assert(pos + count <= RME9652_CHANNEL_BUFFER_BYTES / 4, return -EINVAL);
1919 
1920 	channel_buf = rme9652_channel_buffer_location (rme9652,
1921 						       substream->pstr->stream,
1922 						       channel);
1923 	snd_assert(channel_buf != NULL, return -EIO);
1924 	if (copy_from_user(channel_buf + pos * 4, src, count * 4))
1925 		return -EFAULT;
1926 	return count;
1927 }
1928 
1929 static int snd_rme9652_capture_copy(struct snd_pcm_substream *substream, int channel,
1930 				    snd_pcm_uframes_t pos, void __user *dst, snd_pcm_uframes_t count)
1931 {
1932 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1933 	char *channel_buf;
1934 
1935 	snd_assert(pos + count <= RME9652_CHANNEL_BUFFER_BYTES / 4, return -EINVAL);
1936 
1937 	channel_buf = rme9652_channel_buffer_location (rme9652,
1938 						       substream->pstr->stream,
1939 						       channel);
1940 	snd_assert(channel_buf != NULL, return -EIO);
1941 	if (copy_to_user(dst, channel_buf + pos * 4, count * 4))
1942 		return -EFAULT;
1943 	return count;
1944 }
1945 
1946 static int snd_rme9652_hw_silence(struct snd_pcm_substream *substream, int channel,
1947 				  snd_pcm_uframes_t pos, snd_pcm_uframes_t count)
1948 {
1949 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1950 	char *channel_buf;
1951 
1952 	channel_buf = rme9652_channel_buffer_location (rme9652,
1953 						       substream->pstr->stream,
1954 						       channel);
1955 	snd_assert(channel_buf != NULL, return -EIO);
1956 	memset(channel_buf + pos * 4, 0, count * 4);
1957 	return count;
1958 }
1959 
1960 static int snd_rme9652_reset(struct snd_pcm_substream *substream)
1961 {
1962 	struct snd_pcm_runtime *runtime = substream->runtime;
1963 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1964 	struct snd_pcm_substream *other;
1965 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1966 		other = rme9652->capture_substream;
1967 	else
1968 		other = rme9652->playback_substream;
1969 	if (rme9652->running)
1970 		runtime->status->hw_ptr = rme9652_hw_pointer(rme9652);
1971 	else
1972 		runtime->status->hw_ptr = 0;
1973 	if (other) {
1974 		struct snd_pcm_substream *s;
1975 		struct snd_pcm_runtime *oruntime = other->runtime;
1976 		snd_pcm_group_for_each_entry(s, substream) {
1977 			if (s == other) {
1978 				oruntime->status->hw_ptr = runtime->status->hw_ptr;
1979 				break;
1980 			}
1981 		}
1982 	}
1983 	return 0;
1984 }
1985 
1986 static int snd_rme9652_hw_params(struct snd_pcm_substream *substream,
1987 				 struct snd_pcm_hw_params *params)
1988 {
1989 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
1990 	int err;
1991 	pid_t this_pid;
1992 	pid_t other_pid;
1993 
1994 	spin_lock_irq(&rme9652->lock);
1995 
1996 	if (substream->pstr->stream == SNDRV_PCM_STREAM_PLAYBACK) {
1997 		rme9652->control_register &= ~(RME9652_PRO | RME9652_Dolby | RME9652_EMP);
1998 		rme9652_write(rme9652, RME9652_control_register, rme9652->control_register |= rme9652->creg_spdif_stream);
1999 		this_pid = rme9652->playback_pid;
2000 		other_pid = rme9652->capture_pid;
2001 	} else {
2002 		this_pid = rme9652->capture_pid;
2003 		other_pid = rme9652->playback_pid;
2004 	}
2005 
2006 	if ((other_pid > 0) && (this_pid != other_pid)) {
2007 
2008 		/* The other stream is open, and not by the same
2009 		   task as this one. Make sure that the parameters
2010 		   that matter are the same.
2011 		 */
2012 
2013 		if ((int)params_rate(params) !=
2014 		    rme9652_adat_sample_rate(rme9652)) {
2015 			spin_unlock_irq(&rme9652->lock);
2016 			_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
2017 			return -EBUSY;
2018 		}
2019 
2020 		if (params_period_size(params) != rme9652->period_bytes / 4) {
2021 			spin_unlock_irq(&rme9652->lock);
2022 			_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
2023 			return -EBUSY;
2024 		}
2025 
2026 		/* We're fine. */
2027 
2028 		spin_unlock_irq(&rme9652->lock);
2029  		return 0;
2030 
2031 	} else {
2032 		spin_unlock_irq(&rme9652->lock);
2033 	}
2034 
2035 	/* how to make sure that the rate matches an externally-set one ?
2036 	 */
2037 
2038 	if ((err = rme9652_set_rate(rme9652, params_rate(params))) < 0) {
2039 		_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_RATE);
2040 		return err;
2041 	}
2042 
2043 	if ((err = rme9652_set_interrupt_interval(rme9652, params_period_size(params))) < 0) {
2044 		_snd_pcm_hw_param_setempty(params, SNDRV_PCM_HW_PARAM_PERIOD_SIZE);
2045 		return err;
2046 	}
2047 
2048 	return 0;
2049 }
2050 
2051 static int snd_rme9652_channel_info(struct snd_pcm_substream *substream,
2052 				    struct snd_pcm_channel_info *info)
2053 {
2054 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2055 	int chn;
2056 
2057 	snd_assert(info->channel < RME9652_NCHANNELS, return -EINVAL);
2058 
2059 	if ((chn = rme9652->channel_map[info->channel]) < 0) {
2060 		return -EINVAL;
2061 	}
2062 
2063 	info->offset = chn * RME9652_CHANNEL_BUFFER_BYTES;
2064 	info->first = 0;
2065 	info->step = 32;
2066 	return 0;
2067 }
2068 
2069 static int snd_rme9652_ioctl(struct snd_pcm_substream *substream,
2070 			     unsigned int cmd, void *arg)
2071 {
2072 	switch (cmd) {
2073 	case SNDRV_PCM_IOCTL1_RESET:
2074 	{
2075 		return snd_rme9652_reset(substream);
2076 	}
2077 	case SNDRV_PCM_IOCTL1_CHANNEL_INFO:
2078 	{
2079 		struct snd_pcm_channel_info *info = arg;
2080 		return snd_rme9652_channel_info(substream, info);
2081 	}
2082 	default:
2083 		break;
2084 	}
2085 
2086 	return snd_pcm_lib_ioctl(substream, cmd, arg);
2087 }
2088 
2089 static void rme9652_silence_playback(struct snd_rme9652 *rme9652)
2090 {
2091 	memset(rme9652->playback_buffer, 0, RME9652_DMA_AREA_BYTES);
2092 }
2093 
2094 static int snd_rme9652_trigger(struct snd_pcm_substream *substream,
2095 			       int cmd)
2096 {
2097 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2098 	struct snd_pcm_substream *other;
2099 	int running;
2100 	spin_lock(&rme9652->lock);
2101 	running = rme9652->running;
2102 	switch (cmd) {
2103 	case SNDRV_PCM_TRIGGER_START:
2104 		running |= 1 << substream->stream;
2105 		break;
2106 	case SNDRV_PCM_TRIGGER_STOP:
2107 		running &= ~(1 << substream->stream);
2108 		break;
2109 	default:
2110 		snd_BUG();
2111 		spin_unlock(&rme9652->lock);
2112 		return -EINVAL;
2113 	}
2114 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
2115 		other = rme9652->capture_substream;
2116 	else
2117 		other = rme9652->playback_substream;
2118 
2119 	if (other) {
2120 		struct snd_pcm_substream *s;
2121 		snd_pcm_group_for_each_entry(s, substream) {
2122 			if (s == other) {
2123 				snd_pcm_trigger_done(s, substream);
2124 				if (cmd == SNDRV_PCM_TRIGGER_START)
2125 					running |= 1 << s->stream;
2126 				else
2127 					running &= ~(1 << s->stream);
2128 				goto _ok;
2129 			}
2130 		}
2131 		if (cmd == SNDRV_PCM_TRIGGER_START) {
2132 			if (!(running & (1 << SNDRV_PCM_STREAM_PLAYBACK)) &&
2133 			    substream->stream == SNDRV_PCM_STREAM_CAPTURE)
2134 				rme9652_silence_playback(rme9652);
2135 		} else {
2136 			if (running &&
2137 			    substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
2138 				rme9652_silence_playback(rme9652);
2139 		}
2140 	} else {
2141 		if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
2142 			rme9652_silence_playback(rme9652);
2143 	}
2144  _ok:
2145 	snd_pcm_trigger_done(substream, substream);
2146 	if (!rme9652->running && running)
2147 		rme9652_start(rme9652);
2148 	else if (rme9652->running && !running)
2149 		rme9652_stop(rme9652);
2150 	rme9652->running = running;
2151 	spin_unlock(&rme9652->lock);
2152 
2153 	return 0;
2154 }
2155 
2156 static int snd_rme9652_prepare(struct snd_pcm_substream *substream)
2157 {
2158 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2159 	unsigned long flags;
2160 	int result = 0;
2161 
2162 	spin_lock_irqsave(&rme9652->lock, flags);
2163 	if (!rme9652->running)
2164 		rme9652_reset_hw_pointer(rme9652);
2165 	spin_unlock_irqrestore(&rme9652->lock, flags);
2166 	return result;
2167 }
2168 
2169 static struct snd_pcm_hardware snd_rme9652_playback_subinfo =
2170 {
2171 	.info =			(SNDRV_PCM_INFO_MMAP |
2172 				 SNDRV_PCM_INFO_MMAP_VALID |
2173 				 SNDRV_PCM_INFO_NONINTERLEAVED |
2174 				 SNDRV_PCM_INFO_SYNC_START |
2175 				 SNDRV_PCM_INFO_DOUBLE),
2176 	.formats =		SNDRV_PCM_FMTBIT_S32_LE,
2177 	.rates =		(SNDRV_PCM_RATE_44100 |
2178 				 SNDRV_PCM_RATE_48000 |
2179 				 SNDRV_PCM_RATE_88200 |
2180 				 SNDRV_PCM_RATE_96000),
2181 	.rate_min =		44100,
2182 	.rate_max =		96000,
2183 	.channels_min =		10,
2184 	.channels_max =		26,
2185 	.buffer_bytes_max =	RME9652_CHANNEL_BUFFER_BYTES * 26,
2186 	.period_bytes_min =	(64 * 4) * 10,
2187 	.period_bytes_max =	(8192 * 4) * 26,
2188 	.periods_min =		2,
2189 	.periods_max =		2,
2190 	.fifo_size =		0,
2191 };
2192 
2193 static struct snd_pcm_hardware snd_rme9652_capture_subinfo =
2194 {
2195 	.info =			(SNDRV_PCM_INFO_MMAP |
2196 				 SNDRV_PCM_INFO_MMAP_VALID |
2197 				 SNDRV_PCM_INFO_NONINTERLEAVED |
2198 				 SNDRV_PCM_INFO_SYNC_START),
2199 	.formats =		SNDRV_PCM_FMTBIT_S32_LE,
2200 	.rates =		(SNDRV_PCM_RATE_44100 |
2201 				 SNDRV_PCM_RATE_48000 |
2202 				 SNDRV_PCM_RATE_88200 |
2203 				 SNDRV_PCM_RATE_96000),
2204 	.rate_min =		44100,
2205 	.rate_max =		96000,
2206 	.channels_min =		10,
2207 	.channels_max =		26,
2208 	.buffer_bytes_max =	RME9652_CHANNEL_BUFFER_BYTES *26,
2209 	.period_bytes_min =	(64 * 4) * 10,
2210 	.period_bytes_max =	(8192 * 4) * 26,
2211 	.periods_min =		2,
2212 	.periods_max =		2,
2213 	.fifo_size =		0,
2214 };
2215 
2216 static unsigned int period_sizes[] = { 64, 128, 256, 512, 1024, 2048, 4096, 8192 };
2217 
2218 static struct snd_pcm_hw_constraint_list hw_constraints_period_sizes = {
2219 	.count = ARRAY_SIZE(period_sizes),
2220 	.list = period_sizes,
2221 	.mask = 0
2222 };
2223 
2224 static int snd_rme9652_hw_rule_channels(struct snd_pcm_hw_params *params,
2225 					struct snd_pcm_hw_rule *rule)
2226 {
2227 	struct snd_rme9652 *rme9652 = rule->private;
2228 	struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
2229 	unsigned int list[2] = { rme9652->ds_channels, rme9652->ss_channels };
2230 	return snd_interval_list(c, 2, list, 0);
2231 }
2232 
2233 static int snd_rme9652_hw_rule_channels_rate(struct snd_pcm_hw_params *params,
2234 					     struct snd_pcm_hw_rule *rule)
2235 {
2236 	struct snd_rme9652 *rme9652 = rule->private;
2237 	struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
2238 	struct snd_interval *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
2239 	if (r->min > 48000) {
2240 		struct snd_interval t = {
2241 			.min = rme9652->ds_channels,
2242 			.max = rme9652->ds_channels,
2243 			.integer = 1,
2244 		};
2245 		return snd_interval_refine(c, &t);
2246 	} else if (r->max < 88200) {
2247 		struct snd_interval t = {
2248 			.min = rme9652->ss_channels,
2249 			.max = rme9652->ss_channels,
2250 			.integer = 1,
2251 		};
2252 		return snd_interval_refine(c, &t);
2253 	}
2254 	return 0;
2255 }
2256 
2257 static int snd_rme9652_hw_rule_rate_channels(struct snd_pcm_hw_params *params,
2258 					     struct snd_pcm_hw_rule *rule)
2259 {
2260 	struct snd_rme9652 *rme9652 = rule->private;
2261 	struct snd_interval *c = hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
2262 	struct snd_interval *r = hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
2263 	if (c->min >= rme9652->ss_channels) {
2264 		struct snd_interval t = {
2265 			.min = 44100,
2266 			.max = 48000,
2267 			.integer = 1,
2268 		};
2269 		return snd_interval_refine(r, &t);
2270 	} else if (c->max <= rme9652->ds_channels) {
2271 		struct snd_interval t = {
2272 			.min = 88200,
2273 			.max = 96000,
2274 			.integer = 1,
2275 		};
2276 		return snd_interval_refine(r, &t);
2277 	}
2278 	return 0;
2279 }
2280 
2281 static int snd_rme9652_playback_open(struct snd_pcm_substream *substream)
2282 {
2283 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2284 	struct snd_pcm_runtime *runtime = substream->runtime;
2285 
2286 	spin_lock_irq(&rme9652->lock);
2287 
2288 	snd_pcm_set_sync(substream);
2289 
2290         runtime->hw = snd_rme9652_playback_subinfo;
2291 	runtime->dma_area = rme9652->playback_buffer;
2292 	runtime->dma_bytes = RME9652_DMA_AREA_BYTES;
2293 
2294 	if (rme9652->capture_substream == NULL) {
2295 		rme9652_stop(rme9652);
2296 		rme9652_set_thru(rme9652, -1, 0);
2297 	}
2298 
2299 	rme9652->playback_pid = current->pid;
2300 	rme9652->playback_substream = substream;
2301 
2302 	spin_unlock_irq(&rme9652->lock);
2303 
2304 	snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
2305 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_period_sizes);
2306 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
2307 			     snd_rme9652_hw_rule_channels, rme9652,
2308 			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
2309 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
2310 			     snd_rme9652_hw_rule_channels_rate, rme9652,
2311 			     SNDRV_PCM_HW_PARAM_RATE, -1);
2312 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
2313 			     snd_rme9652_hw_rule_rate_channels, rme9652,
2314 			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
2315 
2316 	rme9652->creg_spdif_stream = rme9652->creg_spdif;
2317 	rme9652->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2318 	snd_ctl_notify(rme9652->card, SNDRV_CTL_EVENT_MASK_VALUE |
2319 		       SNDRV_CTL_EVENT_MASK_INFO, &rme9652->spdif_ctl->id);
2320 	return 0;
2321 }
2322 
2323 static int snd_rme9652_playback_release(struct snd_pcm_substream *substream)
2324 {
2325 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2326 
2327 	spin_lock_irq(&rme9652->lock);
2328 
2329 	rme9652->playback_pid = -1;
2330 	rme9652->playback_substream = NULL;
2331 
2332 	spin_unlock_irq(&rme9652->lock);
2333 
2334 	rme9652->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
2335 	snd_ctl_notify(rme9652->card, SNDRV_CTL_EVENT_MASK_VALUE |
2336 		       SNDRV_CTL_EVENT_MASK_INFO, &rme9652->spdif_ctl->id);
2337 	return 0;
2338 }
2339 
2340 
2341 static int snd_rme9652_capture_open(struct snd_pcm_substream *substream)
2342 {
2343 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2344 	struct snd_pcm_runtime *runtime = substream->runtime;
2345 
2346 	spin_lock_irq(&rme9652->lock);
2347 
2348 	snd_pcm_set_sync(substream);
2349 
2350 	runtime->hw = snd_rme9652_capture_subinfo;
2351 	runtime->dma_area = rme9652->capture_buffer;
2352 	runtime->dma_bytes = RME9652_DMA_AREA_BYTES;
2353 
2354 	if (rme9652->playback_substream == NULL) {
2355 		rme9652_stop(rme9652);
2356 		rme9652_set_thru(rme9652, -1, 0);
2357 	}
2358 
2359 	rme9652->capture_pid = current->pid;
2360 	rme9652->capture_substream = substream;
2361 
2362 	spin_unlock_irq(&rme9652->lock);
2363 
2364 	snd_pcm_hw_constraint_msbits(runtime, 0, 32, 24);
2365 	snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_SIZE, &hw_constraints_period_sizes);
2366 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
2367 			     snd_rme9652_hw_rule_channels, rme9652,
2368 			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
2369 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_CHANNELS,
2370 			     snd_rme9652_hw_rule_channels_rate, rme9652,
2371 			     SNDRV_PCM_HW_PARAM_RATE, -1);
2372 	snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
2373 			     snd_rme9652_hw_rule_rate_channels, rme9652,
2374 			     SNDRV_PCM_HW_PARAM_CHANNELS, -1);
2375 	return 0;
2376 }
2377 
2378 static int snd_rme9652_capture_release(struct snd_pcm_substream *substream)
2379 {
2380 	struct snd_rme9652 *rme9652 = snd_pcm_substream_chip(substream);
2381 
2382 	spin_lock_irq(&rme9652->lock);
2383 
2384 	rme9652->capture_pid = -1;
2385 	rme9652->capture_substream = NULL;
2386 
2387 	spin_unlock_irq(&rme9652->lock);
2388 	return 0;
2389 }
2390 
2391 static struct snd_pcm_ops snd_rme9652_playback_ops = {
2392 	.open =		snd_rme9652_playback_open,
2393 	.close =	snd_rme9652_playback_release,
2394 	.ioctl =	snd_rme9652_ioctl,
2395 	.hw_params =	snd_rme9652_hw_params,
2396 	.prepare =	snd_rme9652_prepare,
2397 	.trigger =	snd_rme9652_trigger,
2398 	.pointer =	snd_rme9652_hw_pointer,
2399 	.copy =		snd_rme9652_playback_copy,
2400 	.silence =	snd_rme9652_hw_silence,
2401 };
2402 
2403 static struct snd_pcm_ops snd_rme9652_capture_ops = {
2404 	.open =		snd_rme9652_capture_open,
2405 	.close =	snd_rme9652_capture_release,
2406 	.ioctl =	snd_rme9652_ioctl,
2407 	.hw_params =	snd_rme9652_hw_params,
2408 	.prepare =	snd_rme9652_prepare,
2409 	.trigger =	snd_rme9652_trigger,
2410 	.pointer =	snd_rme9652_hw_pointer,
2411 	.copy =		snd_rme9652_capture_copy,
2412 };
2413 
2414 static int __devinit snd_rme9652_create_pcm(struct snd_card *card,
2415 					 struct snd_rme9652 *rme9652)
2416 {
2417 	struct snd_pcm *pcm;
2418 	int err;
2419 
2420 	if ((err = snd_pcm_new(card,
2421 			       rme9652->card_name,
2422 			       0, 1, 1, &pcm)) < 0) {
2423 		return err;
2424 	}
2425 
2426 	rme9652->pcm = pcm;
2427 	pcm->private_data = rme9652;
2428 	strcpy(pcm->name, rme9652->card_name);
2429 
2430 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme9652_playback_ops);
2431 	snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme9652_capture_ops);
2432 
2433 	pcm->info_flags = SNDRV_PCM_INFO_JOINT_DUPLEX;
2434 
2435 	return 0;
2436 }
2437 
2438 static int __devinit snd_rme9652_create(struct snd_card *card,
2439 				     struct snd_rme9652 *rme9652,
2440 				     int precise_ptr)
2441 {
2442 	struct pci_dev *pci = rme9652->pci;
2443 	int err;
2444 	int status;
2445 	unsigned short rev;
2446 
2447 	rme9652->irq = -1;
2448 	rme9652->card = card;
2449 
2450 	pci_read_config_word(rme9652->pci, PCI_CLASS_REVISION, &rev);
2451 
2452 	switch (rev & 0xff) {
2453 	case 3:
2454 	case 4:
2455 	case 8:
2456 	case 9:
2457 		break;
2458 
2459 	default:
2460 		/* who knows? */
2461 		return -ENODEV;
2462 	}
2463 
2464 	if ((err = pci_enable_device(pci)) < 0)
2465 		return err;
2466 
2467 	spin_lock_init(&rme9652->lock);
2468 
2469 	if ((err = pci_request_regions(pci, "rme9652")) < 0)
2470 		return err;
2471 	rme9652->port = pci_resource_start(pci, 0);
2472 	rme9652->iobase = ioremap_nocache(rme9652->port, RME9652_IO_EXTENT);
2473 	if (rme9652->iobase == NULL) {
2474 		snd_printk(KERN_ERR "unable to remap region 0x%lx-0x%lx\n", rme9652->port, rme9652->port + RME9652_IO_EXTENT - 1);
2475 		return -EBUSY;
2476 	}
2477 
2478 	if (request_irq(pci->irq, snd_rme9652_interrupt, IRQF_SHARED,
2479 			"rme9652", rme9652)) {
2480 		snd_printk(KERN_ERR "unable to request IRQ %d\n", pci->irq);
2481 		return -EBUSY;
2482 	}
2483 	rme9652->irq = pci->irq;
2484 	rme9652->precise_ptr = precise_ptr;
2485 
2486 	/* Determine the h/w rev level of the card. This seems like
2487 	   a particularly kludgy way to encode it, but its what RME
2488 	   chose to do, so we follow them ...
2489 	*/
2490 
2491 	status = rme9652_read(rme9652, RME9652_status_register);
2492 	if (rme9652_decode_spdif_rate(status&RME9652_F) == 1) {
2493 		rme9652->hw_rev = 15;
2494 	} else {
2495 		rme9652->hw_rev = 11;
2496 	}
2497 
2498 	/* Differentiate between the standard Hammerfall, and the
2499 	   "Light", which does not have the expansion board. This
2500 	   method comes from information received from Mathhias
2501 	   Clausen at RME. Display the EEPROM and h/w revID where
2502 	   relevant.
2503 	*/
2504 
2505 	switch (rev) {
2506 	case 8: /* original eprom */
2507 		strcpy(card->driver, "RME9636");
2508 		if (rme9652->hw_rev == 15) {
2509 			rme9652->card_name = "RME Digi9636 (Rev 1.5)";
2510 		} else {
2511 			rme9652->card_name = "RME Digi9636";
2512 		}
2513 		rme9652->ss_channels = RME9636_NCHANNELS;
2514 		break;
2515 	case 9: /* W36_G EPROM */
2516 		strcpy(card->driver, "RME9636");
2517 		rme9652->card_name = "RME Digi9636 (Rev G)";
2518 		rme9652->ss_channels = RME9636_NCHANNELS;
2519 		break;
2520 	case 4: /* W52_G EPROM */
2521 		strcpy(card->driver, "RME9652");
2522 		rme9652->card_name = "RME Digi9652 (Rev G)";
2523 		rme9652->ss_channels = RME9652_NCHANNELS;
2524 		break;
2525 	case 3: /* original eprom */
2526 		strcpy(card->driver, "RME9652");
2527 		if (rme9652->hw_rev == 15) {
2528 			rme9652->card_name = "RME Digi9652 (Rev 1.5)";
2529 		} else {
2530 			rme9652->card_name = "RME Digi9652";
2531 		}
2532 		rme9652->ss_channels = RME9652_NCHANNELS;
2533 		break;
2534 	}
2535 
2536 	rme9652->ds_channels = (rme9652->ss_channels - 2) / 2 + 2;
2537 
2538 	pci_set_master(rme9652->pci);
2539 
2540 	if ((err = snd_rme9652_initialize_memory(rme9652)) < 0) {
2541 		return err;
2542 	}
2543 
2544 	if ((err = snd_rme9652_create_pcm(card, rme9652)) < 0) {
2545 		return err;
2546 	}
2547 
2548 	if ((err = snd_rme9652_create_controls(card, rme9652)) < 0) {
2549 		return err;
2550 	}
2551 
2552 	snd_rme9652_proc_init(rme9652);
2553 
2554 	rme9652->last_spdif_sample_rate = -1;
2555 	rme9652->last_adat_sample_rate = -1;
2556 	rme9652->playback_pid = -1;
2557 	rme9652->capture_pid = -1;
2558 	rme9652->capture_substream = NULL;
2559 	rme9652->playback_substream = NULL;
2560 
2561 	snd_rme9652_set_defaults(rme9652);
2562 
2563 	if (rme9652->hw_rev == 15) {
2564 		rme9652_initialize_spdif_receiver (rme9652);
2565 	}
2566 
2567 	return 0;
2568 }
2569 
2570 static void snd_rme9652_card_free(struct snd_card *card)
2571 {
2572 	struct snd_rme9652 *rme9652 = (struct snd_rme9652 *) card->private_data;
2573 
2574 	if (rme9652)
2575 		snd_rme9652_free(rme9652);
2576 }
2577 
2578 static int __devinit snd_rme9652_probe(struct pci_dev *pci,
2579 				       const struct pci_device_id *pci_id)
2580 {
2581 	static int dev;
2582 	struct snd_rme9652 *rme9652;
2583 	struct snd_card *card;
2584 	int err;
2585 
2586 	if (dev >= SNDRV_CARDS)
2587 		return -ENODEV;
2588 	if (!enable[dev]) {
2589 		dev++;
2590 		return -ENOENT;
2591 	}
2592 
2593 	card = snd_card_new(index[dev], id[dev], THIS_MODULE,
2594 			    sizeof(struct snd_rme9652));
2595 
2596 	if (!card)
2597 		return -ENOMEM;
2598 
2599 	rme9652 = (struct snd_rme9652 *) card->private_data;
2600 	card->private_free = snd_rme9652_card_free;
2601 	rme9652->dev = dev;
2602 	rme9652->pci = pci;
2603 	snd_card_set_dev(card, &pci->dev);
2604 
2605 	if ((err = snd_rme9652_create(card, rme9652, precise_ptr[dev])) < 0) {
2606 		snd_card_free(card);
2607 		return err;
2608 	}
2609 
2610 	strcpy(card->shortname, rme9652->card_name);
2611 
2612 	sprintf(card->longname, "%s at 0x%lx, irq %d",
2613 		card->shortname, rme9652->port, rme9652->irq);
2614 
2615 
2616 	if ((err = snd_card_register(card)) < 0) {
2617 		snd_card_free(card);
2618 		return err;
2619 	}
2620 	pci_set_drvdata(pci, card);
2621 	dev++;
2622 	return 0;
2623 }
2624 
2625 static void __devexit snd_rme9652_remove(struct pci_dev *pci)
2626 {
2627 	snd_card_free(pci_get_drvdata(pci));
2628 	pci_set_drvdata(pci, NULL);
2629 }
2630 
2631 static struct pci_driver driver = {
2632 	.name	  = "RME Digi9652 (Hammerfall)",
2633 	.id_table = snd_rme9652_ids,
2634 	.probe	  = snd_rme9652_probe,
2635 	.remove	  = __devexit_p(snd_rme9652_remove),
2636 };
2637 
2638 static int __init alsa_card_hammerfall_init(void)
2639 {
2640 	return pci_register_driver(&driver);
2641 }
2642 
2643 static void __exit alsa_card_hammerfall_exit(void)
2644 {
2645 	pci_unregister_driver(&driver);
2646 }
2647 
2648 module_init(alsa_card_hammerfall_init)
2649 module_exit(alsa_card_hammerfall_exit)
2650