xref: /openbmc/linux/sound/pci/rme96.c (revision 5ef12cb4)
1 /*
2  *   ALSA driver for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST audio
3  *   interfaces
4  *
5  *	Copyright (c) 2000, 2001 Anders Torger <torger@ludd.luth.se>
6  *
7  *      Thanks to Henk Hesselink <henk@anda.nl> for the analog volume control
8  *      code.
9  *
10  *   This program is free software; you can redistribute it and/or modify
11  *   it under the terms of the GNU General Public License as published by
12  *   the Free Software Foundation; either version 2 of the License, or
13  *   (at your option) any later version.
14  *
15  *   This program is distributed in the hope that it will be useful,
16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  *   GNU General Public License for more details.
19  *
20  *   You should have received a copy of the GNU General Public License
21  *   along with this program; if not, write to the Free Software
22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
23  *
24  */
25 
26 #include <linux/delay.h>
27 #include <linux/init.h>
28 #include <linux/interrupt.h>
29 #include <linux/pci.h>
30 #include <linux/module.h>
31 #include <linux/vmalloc.h>
32 #include <linux/io.h>
33 
34 #include <sound/core.h>
35 #include <sound/info.h>
36 #include <sound/control.h>
37 #include <sound/pcm.h>
38 #include <sound/pcm_params.h>
39 #include <sound/asoundef.h>
40 #include <sound/initval.h>
41 
42 /* note, two last pcis should be equal, it is not a bug */
43 
44 MODULE_AUTHOR("Anders Torger <torger@ludd.luth.se>");
45 MODULE_DESCRIPTION("RME Digi96, Digi96/8, Digi96/8 PRO, Digi96/8 PST, "
46 		   "Digi96/8 PAD");
47 MODULE_LICENSE("GPL");
48 MODULE_SUPPORTED_DEVICE("{{RME,Digi96},"
49 		"{RME,Digi96/8},"
50 		"{RME,Digi96/8 PRO},"
51 		"{RME,Digi96/8 PST},"
52 		"{RME,Digi96/8 PAD}}");
53 
54 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
55 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
56 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
57 
58 module_param_array(index, int, NULL, 0444);
59 MODULE_PARM_DESC(index, "Index value for RME Digi96 soundcard.");
60 module_param_array(id, charp, NULL, 0444);
61 MODULE_PARM_DESC(id, "ID string for RME Digi96 soundcard.");
62 module_param_array(enable, bool, NULL, 0444);
63 MODULE_PARM_DESC(enable, "Enable RME Digi96 soundcard.");
64 
65 /*
66  * Defines for RME Digi96 series, from internal RME reference documents
67  * dated 12.01.00
68  */
69 
70 #define RME96_SPDIF_NCHANNELS 2
71 
72 /* Playback and capture buffer size */
73 #define RME96_BUFFER_SIZE 0x10000
74 
75 /* IO area size */
76 #define RME96_IO_SIZE 0x60000
77 
78 /* IO area offsets */
79 #define RME96_IO_PLAY_BUFFER      0x0
80 #define RME96_IO_REC_BUFFER       0x10000
81 #define RME96_IO_CONTROL_REGISTER 0x20000
82 #define RME96_IO_ADDITIONAL_REG   0x20004
83 #define RME96_IO_CONFIRM_PLAY_IRQ 0x20008
84 #define RME96_IO_CONFIRM_REC_IRQ  0x2000C
85 #define RME96_IO_SET_PLAY_POS     0x40000
86 #define RME96_IO_RESET_PLAY_POS   0x4FFFC
87 #define RME96_IO_SET_REC_POS      0x50000
88 #define RME96_IO_RESET_REC_POS    0x5FFFC
89 #define RME96_IO_GET_PLAY_POS     0x20000
90 #define RME96_IO_GET_REC_POS      0x30000
91 
92 /* Write control register bits */
93 #define RME96_WCR_START     (1 << 0)
94 #define RME96_WCR_START_2   (1 << 1)
95 #define RME96_WCR_GAIN_0    (1 << 2)
96 #define RME96_WCR_GAIN_1    (1 << 3)
97 #define RME96_WCR_MODE24    (1 << 4)
98 #define RME96_WCR_MODE24_2  (1 << 5)
99 #define RME96_WCR_BM        (1 << 6)
100 #define RME96_WCR_BM_2      (1 << 7)
101 #define RME96_WCR_ADAT      (1 << 8)
102 #define RME96_WCR_FREQ_0    (1 << 9)
103 #define RME96_WCR_FREQ_1    (1 << 10)
104 #define RME96_WCR_DS        (1 << 11)
105 #define RME96_WCR_PRO       (1 << 12)
106 #define RME96_WCR_EMP       (1 << 13)
107 #define RME96_WCR_SEL       (1 << 14)
108 #define RME96_WCR_MASTER    (1 << 15)
109 #define RME96_WCR_PD        (1 << 16)
110 #define RME96_WCR_INP_0     (1 << 17)
111 #define RME96_WCR_INP_1     (1 << 18)
112 #define RME96_WCR_THRU_0    (1 << 19)
113 #define RME96_WCR_THRU_1    (1 << 20)
114 #define RME96_WCR_THRU_2    (1 << 21)
115 #define RME96_WCR_THRU_3    (1 << 22)
116 #define RME96_WCR_THRU_4    (1 << 23)
117 #define RME96_WCR_THRU_5    (1 << 24)
118 #define RME96_WCR_THRU_6    (1 << 25)
119 #define RME96_WCR_THRU_7    (1 << 26)
120 #define RME96_WCR_DOLBY     (1 << 27)
121 #define RME96_WCR_MONITOR_0 (1 << 28)
122 #define RME96_WCR_MONITOR_1 (1 << 29)
123 #define RME96_WCR_ISEL      (1 << 30)
124 #define RME96_WCR_IDIS      (1 << 31)
125 
126 #define RME96_WCR_BITPOS_GAIN_0 2
127 #define RME96_WCR_BITPOS_GAIN_1 3
128 #define RME96_WCR_BITPOS_FREQ_0 9
129 #define RME96_WCR_BITPOS_FREQ_1 10
130 #define RME96_WCR_BITPOS_INP_0 17
131 #define RME96_WCR_BITPOS_INP_1 18
132 #define RME96_WCR_BITPOS_MONITOR_0 28
133 #define RME96_WCR_BITPOS_MONITOR_1 29
134 
135 /* Read control register bits */
136 #define RME96_RCR_AUDIO_ADDR_MASK 0xFFFF
137 #define RME96_RCR_IRQ_2     (1 << 16)
138 #define RME96_RCR_T_OUT     (1 << 17)
139 #define RME96_RCR_DEV_ID_0  (1 << 21)
140 #define RME96_RCR_DEV_ID_1  (1 << 22)
141 #define RME96_RCR_LOCK      (1 << 23)
142 #define RME96_RCR_VERF      (1 << 26)
143 #define RME96_RCR_F0        (1 << 27)
144 #define RME96_RCR_F1        (1 << 28)
145 #define RME96_RCR_F2        (1 << 29)
146 #define RME96_RCR_AUTOSYNC  (1 << 30)
147 #define RME96_RCR_IRQ       (1 << 31)
148 
149 #define RME96_RCR_BITPOS_F0 27
150 #define RME96_RCR_BITPOS_F1 28
151 #define RME96_RCR_BITPOS_F2 29
152 
153 /* Additional register bits */
154 #define RME96_AR_WSEL       (1 << 0)
155 #define RME96_AR_ANALOG     (1 << 1)
156 #define RME96_AR_FREQPAD_0  (1 << 2)
157 #define RME96_AR_FREQPAD_1  (1 << 3)
158 #define RME96_AR_FREQPAD_2  (1 << 4)
159 #define RME96_AR_PD2        (1 << 5)
160 #define RME96_AR_DAC_EN     (1 << 6)
161 #define RME96_AR_CLATCH     (1 << 7)
162 #define RME96_AR_CCLK       (1 << 8)
163 #define RME96_AR_CDATA      (1 << 9)
164 
165 #define RME96_AR_BITPOS_F0 2
166 #define RME96_AR_BITPOS_F1 3
167 #define RME96_AR_BITPOS_F2 4
168 
169 /* Monitor tracks */
170 #define RME96_MONITOR_TRACKS_1_2 0
171 #define RME96_MONITOR_TRACKS_3_4 1
172 #define RME96_MONITOR_TRACKS_5_6 2
173 #define RME96_MONITOR_TRACKS_7_8 3
174 
175 /* Attenuation */
176 #define RME96_ATTENUATION_0 0
177 #define RME96_ATTENUATION_6 1
178 #define RME96_ATTENUATION_12 2
179 #define RME96_ATTENUATION_18 3
180 
181 /* Input types */
182 #define RME96_INPUT_OPTICAL 0
183 #define RME96_INPUT_COAXIAL 1
184 #define RME96_INPUT_INTERNAL 2
185 #define RME96_INPUT_XLR 3
186 #define RME96_INPUT_ANALOG 4
187 
188 /* Clock modes */
189 #define RME96_CLOCKMODE_SLAVE 0
190 #define RME96_CLOCKMODE_MASTER 1
191 #define RME96_CLOCKMODE_WORDCLOCK 2
192 
193 /* Block sizes in bytes */
194 #define RME96_SMALL_BLOCK_SIZE 2048
195 #define RME96_LARGE_BLOCK_SIZE 8192
196 
197 /* Volume control */
198 #define RME96_AD1852_VOL_BITS 14
199 #define RME96_AD1855_VOL_BITS 10
200 
201 /* Defines for snd_rme96_trigger */
202 #define RME96_TB_START_PLAYBACK 1
203 #define RME96_TB_START_CAPTURE 2
204 #define RME96_TB_STOP_PLAYBACK 4
205 #define RME96_TB_STOP_CAPTURE 8
206 #define RME96_TB_RESET_PLAYPOS 16
207 #define RME96_TB_RESET_CAPTUREPOS 32
208 #define RME96_TB_CLEAR_PLAYBACK_IRQ 64
209 #define RME96_TB_CLEAR_CAPTURE_IRQ 128
210 #define RME96_RESUME_PLAYBACK	(RME96_TB_START_PLAYBACK)
211 #define RME96_RESUME_CAPTURE	(RME96_TB_START_CAPTURE)
212 #define RME96_RESUME_BOTH	(RME96_RESUME_PLAYBACK \
213 				| RME96_RESUME_CAPTURE)
214 #define RME96_START_PLAYBACK	(RME96_TB_START_PLAYBACK \
215 				| RME96_TB_RESET_PLAYPOS)
216 #define RME96_START_CAPTURE	(RME96_TB_START_CAPTURE \
217 				| RME96_TB_RESET_CAPTUREPOS)
218 #define RME96_START_BOTH	(RME96_START_PLAYBACK \
219 				| RME96_START_CAPTURE)
220 #define RME96_STOP_PLAYBACK	(RME96_TB_STOP_PLAYBACK \
221 				| RME96_TB_CLEAR_PLAYBACK_IRQ)
222 #define RME96_STOP_CAPTURE	(RME96_TB_STOP_CAPTURE \
223 				| RME96_TB_CLEAR_CAPTURE_IRQ)
224 #define RME96_STOP_BOTH		(RME96_STOP_PLAYBACK \
225 				| RME96_STOP_CAPTURE)
226 
227 struct rme96 {
228 	spinlock_t    lock;
229 	int irq;
230 	unsigned long port;
231 	void __iomem *iobase;
232 
233 	u32 wcreg;    /* cached write control register value */
234 	u32 wcreg_spdif;		/* S/PDIF setup */
235 	u32 wcreg_spdif_stream;		/* S/PDIF setup (temporary) */
236 	u32 rcreg;    /* cached read control register value */
237 	u32 areg;     /* cached additional register value */
238 	u16 vol[2]; /* cached volume of analog output */
239 
240 	u8 rev; /* card revision number */
241 
242 #ifdef CONFIG_PM_SLEEP
243 	u32 playback_pointer;
244 	u32 capture_pointer;
245 	void *playback_suspend_buffer;
246 	void *capture_suspend_buffer;
247 #endif
248 
249 	struct snd_pcm_substream *playback_substream;
250 	struct snd_pcm_substream *capture_substream;
251 
252 	int playback_frlog; /* log2 of framesize */
253 	int capture_frlog;
254 
255         size_t playback_periodsize; /* in bytes, zero if not used */
256 	size_t capture_periodsize; /* in bytes, zero if not used */
257 
258 	struct snd_card *card;
259 	struct snd_pcm *spdif_pcm;
260 	struct snd_pcm *adat_pcm;
261 	struct pci_dev     *pci;
262 	struct snd_kcontrol   *spdif_ctl;
263 };
264 
265 static const struct pci_device_id snd_rme96_ids[] = {
266 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96), 0, },
267 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8), 0, },
268 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PRO), 0, },
269 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST), 0, },
270 	{ 0, }
271 };
272 
273 MODULE_DEVICE_TABLE(pci, snd_rme96_ids);
274 
275 #define RME96_ISPLAYING(rme96) ((rme96)->wcreg & RME96_WCR_START)
276 #define RME96_ISRECORDING(rme96) ((rme96)->wcreg & RME96_WCR_START_2)
277 #define	RME96_HAS_ANALOG_IN(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)
278 #define	RME96_HAS_ANALOG_OUT(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO || \
279 				     (rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)
280 #define	RME96_DAC_IS_1852(rme96) (RME96_HAS_ANALOG_OUT(rme96) && (rme96)->rev >= 4)
281 #define	RME96_DAC_IS_1855(rme96) (((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && (rme96)->rev < 4) || \
282 			          ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO && (rme96)->rev == 2))
283 #define	RME96_185X_MAX_OUT(rme96) ((1 << (RME96_DAC_IS_1852(rme96) ? RME96_AD1852_VOL_BITS : RME96_AD1855_VOL_BITS)) - 1)
284 
285 static int
286 snd_rme96_playback_prepare(struct snd_pcm_substream *substream);
287 
288 static int
289 snd_rme96_capture_prepare(struct snd_pcm_substream *substream);
290 
291 static int
292 snd_rme96_playback_trigger(struct snd_pcm_substream *substream,
293 			   int cmd);
294 
295 static int
296 snd_rme96_capture_trigger(struct snd_pcm_substream *substream,
297 			  int cmd);
298 
299 static snd_pcm_uframes_t
300 snd_rme96_playback_pointer(struct snd_pcm_substream *substream);
301 
302 static snd_pcm_uframes_t
303 snd_rme96_capture_pointer(struct snd_pcm_substream *substream);
304 
305 static void snd_rme96_proc_init(struct rme96 *rme96);
306 
307 static int
308 snd_rme96_create_switches(struct snd_card *card,
309 			  struct rme96 *rme96);
310 
311 static int
312 snd_rme96_getinputtype(struct rme96 *rme96);
313 
314 static inline unsigned int
315 snd_rme96_playback_ptr(struct rme96 *rme96)
316 {
317 	return (readl(rme96->iobase + RME96_IO_GET_PLAY_POS)
318 		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->playback_frlog;
319 }
320 
321 static inline unsigned int
322 snd_rme96_capture_ptr(struct rme96 *rme96)
323 {
324 	return (readl(rme96->iobase + RME96_IO_GET_REC_POS)
325 		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->capture_frlog;
326 }
327 
328 static int
329 snd_rme96_playback_silence(struct snd_pcm_substream *substream,
330 			   int channel, unsigned long pos, unsigned long count)
331 {
332 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
333 
334 	memset_io(rme96->iobase + RME96_IO_PLAY_BUFFER + pos,
335 		  0, count);
336 	return 0;
337 }
338 
339 static int
340 snd_rme96_playback_copy(struct snd_pcm_substream *substream,
341 			int channel, unsigned long pos,
342 			void __user *src, unsigned long count)
343 {
344 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
345 
346 	return copy_from_user_toio(rme96->iobase + RME96_IO_PLAY_BUFFER + pos,
347 				   src, count);
348 }
349 
350 static int
351 snd_rme96_playback_copy_kernel(struct snd_pcm_substream *substream,
352 			       int channel, unsigned long pos,
353 			       void *src, unsigned long count)
354 {
355 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
356 
357 	memcpy_toio(rme96->iobase + RME96_IO_PLAY_BUFFER + pos, src, count);
358 	return 0;
359 }
360 
361 static int
362 snd_rme96_capture_copy(struct snd_pcm_substream *substream,
363 		       int channel, unsigned long pos,
364 		       void __user *dst, unsigned long count)
365 {
366 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
367 
368 	return copy_to_user_fromio(dst,
369 				   rme96->iobase + RME96_IO_REC_BUFFER + pos,
370 				   count);
371 }
372 
373 static int
374 snd_rme96_capture_copy_kernel(struct snd_pcm_substream *substream,
375 			      int channel, unsigned long pos,
376 			      void *dst, unsigned long count)
377 {
378 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
379 
380 	memcpy_fromio(dst, rme96->iobase + RME96_IO_REC_BUFFER + pos, count);
381 	return 0;
382 }
383 
384 /*
385  * Digital output capabilities (S/PDIF)
386  */
387 static const struct snd_pcm_hardware snd_rme96_playback_spdif_info =
388 {
389 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
390 			      SNDRV_PCM_INFO_MMAP_VALID |
391 			      SNDRV_PCM_INFO_SYNC_START |
392 			      SNDRV_PCM_INFO_RESUME |
393 			      SNDRV_PCM_INFO_INTERLEAVED |
394 			      SNDRV_PCM_INFO_PAUSE),
395 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
396 			      SNDRV_PCM_FMTBIT_S32_LE),
397 	.rates =	     (SNDRV_PCM_RATE_32000 |
398 			      SNDRV_PCM_RATE_44100 |
399 			      SNDRV_PCM_RATE_48000 |
400 			      SNDRV_PCM_RATE_64000 |
401 			      SNDRV_PCM_RATE_88200 |
402 			      SNDRV_PCM_RATE_96000),
403 	.rate_min =	     32000,
404 	.rate_max =	     96000,
405 	.channels_min =	     2,
406 	.channels_max =	     2,
407 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
408 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
409 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
410 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
411 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
412 	.fifo_size =	     0,
413 };
414 
415 /*
416  * Digital input capabilities (S/PDIF)
417  */
418 static const struct snd_pcm_hardware snd_rme96_capture_spdif_info =
419 {
420 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
421 			      SNDRV_PCM_INFO_MMAP_VALID |
422 			      SNDRV_PCM_INFO_SYNC_START |
423 			      SNDRV_PCM_INFO_RESUME |
424 			      SNDRV_PCM_INFO_INTERLEAVED |
425 			      SNDRV_PCM_INFO_PAUSE),
426 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
427 			      SNDRV_PCM_FMTBIT_S32_LE),
428 	.rates =	     (SNDRV_PCM_RATE_32000 |
429 			      SNDRV_PCM_RATE_44100 |
430 			      SNDRV_PCM_RATE_48000 |
431 			      SNDRV_PCM_RATE_64000 |
432 			      SNDRV_PCM_RATE_88200 |
433 			      SNDRV_PCM_RATE_96000),
434 	.rate_min =	     32000,
435 	.rate_max =	     96000,
436 	.channels_min =	     2,
437 	.channels_max =	     2,
438 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
439 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
440 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
441 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
442 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
443 	.fifo_size =	     0,
444 };
445 
446 /*
447  * Digital output capabilities (ADAT)
448  */
449 static const struct snd_pcm_hardware snd_rme96_playback_adat_info =
450 {
451 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
452 			      SNDRV_PCM_INFO_MMAP_VALID |
453 			      SNDRV_PCM_INFO_SYNC_START |
454 			      SNDRV_PCM_INFO_RESUME |
455 			      SNDRV_PCM_INFO_INTERLEAVED |
456 			      SNDRV_PCM_INFO_PAUSE),
457 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
458 			      SNDRV_PCM_FMTBIT_S32_LE),
459 	.rates =             (SNDRV_PCM_RATE_44100 |
460 			      SNDRV_PCM_RATE_48000),
461 	.rate_min =          44100,
462 	.rate_max =          48000,
463 	.channels_min =      8,
464 	.channels_max =	     8,
465 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
466 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
467 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
468 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
469 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
470 	.fifo_size =	     0,
471 };
472 
473 /*
474  * Digital input capabilities (ADAT)
475  */
476 static const struct snd_pcm_hardware snd_rme96_capture_adat_info =
477 {
478 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
479 			      SNDRV_PCM_INFO_MMAP_VALID |
480 			      SNDRV_PCM_INFO_SYNC_START |
481 			      SNDRV_PCM_INFO_RESUME |
482 			      SNDRV_PCM_INFO_INTERLEAVED |
483 			      SNDRV_PCM_INFO_PAUSE),
484 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
485 			      SNDRV_PCM_FMTBIT_S32_LE),
486 	.rates =	     (SNDRV_PCM_RATE_44100 |
487 			      SNDRV_PCM_RATE_48000),
488 	.rate_min =          44100,
489 	.rate_max =          48000,
490 	.channels_min =      8,
491 	.channels_max =	     8,
492 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
493 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
494 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
495 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
496 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
497 	.fifo_size =         0,
498 };
499 
500 /*
501  * The CDATA, CCLK and CLATCH bits can be used to write to the SPI interface
502  * of the AD1852 or AD1852 D/A converter on the board.  CDATA must be set up
503  * on the falling edge of CCLK and be stable on the rising edge.  The rising
504  * edge of CLATCH after the last data bit clocks in the whole data word.
505  * A fast processor could probably drive the SPI interface faster than the
506  * DAC can handle (3MHz for the 1855, unknown for the 1852).  The udelay(1)
507  * limits the data rate to 500KHz and only causes a delay of 33 microsecs.
508  *
509  * NOTE: increased delay from 1 to 10, since there where problems setting
510  * the volume.
511  */
512 static void
513 snd_rme96_write_SPI(struct rme96 *rme96, u16 val)
514 {
515 	int i;
516 
517 	for (i = 0; i < 16; i++) {
518 		if (val & 0x8000) {
519 			rme96->areg |= RME96_AR_CDATA;
520 		} else {
521 			rme96->areg &= ~RME96_AR_CDATA;
522 		}
523 		rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CLATCH);
524 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
525 		udelay(10);
526 		rme96->areg |= RME96_AR_CCLK;
527 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
528 		udelay(10);
529 		val <<= 1;
530 	}
531 	rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CDATA);
532 	rme96->areg |= RME96_AR_CLATCH;
533 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
534 	udelay(10);
535 	rme96->areg &= ~RME96_AR_CLATCH;
536 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
537 }
538 
539 static void
540 snd_rme96_apply_dac_volume(struct rme96 *rme96)
541 {
542 	if (RME96_DAC_IS_1852(rme96)) {
543 		snd_rme96_write_SPI(rme96, (rme96->vol[0] << 2) | 0x0);
544 		snd_rme96_write_SPI(rme96, (rme96->vol[1] << 2) | 0x2);
545 	} else if (RME96_DAC_IS_1855(rme96)) {
546 		snd_rme96_write_SPI(rme96, (rme96->vol[0] & 0x3FF) | 0x000);
547 		snd_rme96_write_SPI(rme96, (rme96->vol[1] & 0x3FF) | 0x400);
548 	}
549 }
550 
551 static void
552 snd_rme96_reset_dac(struct rme96 *rme96)
553 {
554 	writel(rme96->wcreg | RME96_WCR_PD,
555 	       rme96->iobase + RME96_IO_CONTROL_REGISTER);
556 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
557 }
558 
559 static int
560 snd_rme96_getmontracks(struct rme96 *rme96)
561 {
562 	return ((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_0) & 1) +
563 		(((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_1) & 1) << 1);
564 }
565 
566 static int
567 snd_rme96_setmontracks(struct rme96 *rme96,
568 		       int montracks)
569 {
570 	if (montracks & 1) {
571 		rme96->wcreg |= RME96_WCR_MONITOR_0;
572 	} else {
573 		rme96->wcreg &= ~RME96_WCR_MONITOR_0;
574 	}
575 	if (montracks & 2) {
576 		rme96->wcreg |= RME96_WCR_MONITOR_1;
577 	} else {
578 		rme96->wcreg &= ~RME96_WCR_MONITOR_1;
579 	}
580 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
581 	return 0;
582 }
583 
584 static int
585 snd_rme96_getattenuation(struct rme96 *rme96)
586 {
587 	return ((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_0) & 1) +
588 		(((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_1) & 1) << 1);
589 }
590 
591 static int
592 snd_rme96_setattenuation(struct rme96 *rme96,
593 			 int attenuation)
594 {
595 	switch (attenuation) {
596 	case 0:
597 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) &
598 			~RME96_WCR_GAIN_1;
599 		break;
600 	case 1:
601 		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) &
602 			~RME96_WCR_GAIN_1;
603 		break;
604 	case 2:
605 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) |
606 			RME96_WCR_GAIN_1;
607 		break;
608 	case 3:
609 		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) |
610 			RME96_WCR_GAIN_1;
611 		break;
612 	default:
613 		return -EINVAL;
614 	}
615 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
616 	return 0;
617 }
618 
619 static int
620 snd_rme96_capture_getrate(struct rme96 *rme96,
621 			  int *is_adat)
622 {
623 	int n, rate;
624 
625 	*is_adat = 0;
626 	if (rme96->areg & RME96_AR_ANALOG) {
627 		/* Analog input, overrides S/PDIF setting */
628 		n = ((rme96->areg >> RME96_AR_BITPOS_F0) & 1) +
629 			(((rme96->areg >> RME96_AR_BITPOS_F1) & 1) << 1);
630 		switch (n) {
631 		case 1:
632 			rate = 32000;
633 			break;
634 		case 2:
635 			rate = 44100;
636 			break;
637 		case 3:
638 			rate = 48000;
639 			break;
640 		default:
641 			return -1;
642 		}
643 		return (rme96->areg & RME96_AR_BITPOS_F2) ? rate << 1 : rate;
644 	}
645 
646 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
647 	if (rme96->rcreg & RME96_RCR_LOCK) {
648 		/* ADAT rate */
649 		*is_adat = 1;
650 		if (rme96->rcreg & RME96_RCR_T_OUT) {
651 			return 48000;
652 		}
653 		return 44100;
654 	}
655 
656 	if (rme96->rcreg & RME96_RCR_VERF) {
657 		return -1;
658 	}
659 
660 	/* S/PDIF rate */
661 	n = ((rme96->rcreg >> RME96_RCR_BITPOS_F0) & 1) +
662 		(((rme96->rcreg >> RME96_RCR_BITPOS_F1) & 1) << 1) +
663 		(((rme96->rcreg >> RME96_RCR_BITPOS_F2) & 1) << 2);
664 
665 	switch (n) {
666 	case 0:
667 		if (rme96->rcreg & RME96_RCR_T_OUT) {
668 			return 64000;
669 		}
670 		return -1;
671 	case 3: return 96000;
672 	case 4: return 88200;
673 	case 5: return 48000;
674 	case 6: return 44100;
675 	case 7: return 32000;
676 	default:
677 		break;
678 	}
679 	return -1;
680 }
681 
682 static int
683 snd_rme96_playback_getrate(struct rme96 *rme96)
684 {
685 	int rate, dummy;
686 
687 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
688             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
689 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
690 	{
691 	        /* slave clock */
692 	        return rate;
693 	}
694 	rate = ((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_0) & 1) +
695 		(((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_1) & 1) << 1);
696 	switch (rate) {
697 	case 1:
698 		rate = 32000;
699 		break;
700 	case 2:
701 		rate = 44100;
702 		break;
703 	case 3:
704 		rate = 48000;
705 		break;
706 	default:
707 		return -1;
708 	}
709 	return (rme96->wcreg & RME96_WCR_DS) ? rate << 1 : rate;
710 }
711 
712 static int
713 snd_rme96_playback_setrate(struct rme96 *rme96,
714 			   int rate)
715 {
716 	int ds;
717 
718 	ds = rme96->wcreg & RME96_WCR_DS;
719 	switch (rate) {
720 	case 32000:
721 		rme96->wcreg &= ~RME96_WCR_DS;
722 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
723 			~RME96_WCR_FREQ_1;
724 		break;
725 	case 44100:
726 		rme96->wcreg &= ~RME96_WCR_DS;
727 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
728 			~RME96_WCR_FREQ_0;
729 		break;
730 	case 48000:
731 		rme96->wcreg &= ~RME96_WCR_DS;
732 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
733 			RME96_WCR_FREQ_1;
734 		break;
735 	case 64000:
736 		rme96->wcreg |= RME96_WCR_DS;
737 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
738 			~RME96_WCR_FREQ_1;
739 		break;
740 	case 88200:
741 		rme96->wcreg |= RME96_WCR_DS;
742 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
743 			~RME96_WCR_FREQ_0;
744 		break;
745 	case 96000:
746 		rme96->wcreg |= RME96_WCR_DS;
747 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
748 			RME96_WCR_FREQ_1;
749 		break;
750 	default:
751 		return -EINVAL;
752 	}
753 	if ((!ds && rme96->wcreg & RME96_WCR_DS) ||
754 	    (ds && !(rme96->wcreg & RME96_WCR_DS)))
755 	{
756 		/* change to/from double-speed: reset the DAC (if available) */
757 		snd_rme96_reset_dac(rme96);
758 		return 1; /* need to restore volume */
759 	} else {
760 		writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
761 		return 0;
762 	}
763 }
764 
765 static int
766 snd_rme96_capture_analog_setrate(struct rme96 *rme96,
767 				 int rate)
768 {
769 	switch (rate) {
770 	case 32000:
771 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
772 			       ~RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
773 		break;
774 	case 44100:
775 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
776 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
777 		break;
778 	case 48000:
779 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
780 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
781 		break;
782 	case 64000:
783 		if (rme96->rev < 4) {
784 			return -EINVAL;
785 		}
786 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
787 			       ~RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
788 		break;
789 	case 88200:
790 		if (rme96->rev < 4) {
791 			return -EINVAL;
792 		}
793 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
794 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
795 		break;
796 	case 96000:
797 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
798 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
799 		break;
800 	default:
801 		return -EINVAL;
802 	}
803 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
804 	return 0;
805 }
806 
807 static int
808 snd_rme96_setclockmode(struct rme96 *rme96,
809 		       int mode)
810 {
811 	switch (mode) {
812 	case RME96_CLOCKMODE_SLAVE:
813 	        /* AutoSync */
814 		rme96->wcreg &= ~RME96_WCR_MASTER;
815 		rme96->areg &= ~RME96_AR_WSEL;
816 		break;
817 	case RME96_CLOCKMODE_MASTER:
818 	        /* Internal */
819 		rme96->wcreg |= RME96_WCR_MASTER;
820 		rme96->areg &= ~RME96_AR_WSEL;
821 		break;
822 	case RME96_CLOCKMODE_WORDCLOCK:
823 		/* Word clock is a master mode */
824 		rme96->wcreg |= RME96_WCR_MASTER;
825 		rme96->areg |= RME96_AR_WSEL;
826 		break;
827 	default:
828 		return -EINVAL;
829 	}
830 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
831 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
832 	return 0;
833 }
834 
835 static int
836 snd_rme96_getclockmode(struct rme96 *rme96)
837 {
838 	if (rme96->areg & RME96_AR_WSEL) {
839 		return RME96_CLOCKMODE_WORDCLOCK;
840 	}
841 	return (rme96->wcreg & RME96_WCR_MASTER) ? RME96_CLOCKMODE_MASTER :
842 		RME96_CLOCKMODE_SLAVE;
843 }
844 
845 static int
846 snd_rme96_setinputtype(struct rme96 *rme96,
847 		       int type)
848 {
849 	int n;
850 
851 	switch (type) {
852 	case RME96_INPUT_OPTICAL:
853 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) &
854 			~RME96_WCR_INP_1;
855 		break;
856 	case RME96_INPUT_COAXIAL:
857 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) &
858 			~RME96_WCR_INP_1;
859 		break;
860 	case RME96_INPUT_INTERNAL:
861 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) |
862 			RME96_WCR_INP_1;
863 		break;
864 	case RME96_INPUT_XLR:
865 		if ((rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
866 		     rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PRO) ||
867 		    (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
868 		     rme96->rev > 4))
869 		{
870 			/* Only Digi96/8 PRO and Digi96/8 PAD supports XLR */
871 			return -EINVAL;
872 		}
873 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) |
874 			RME96_WCR_INP_1;
875 		break;
876 	case RME96_INPUT_ANALOG:
877 		if (!RME96_HAS_ANALOG_IN(rme96)) {
878 			return -EINVAL;
879 		}
880 		rme96->areg |= RME96_AR_ANALOG;
881 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
882 		if (rme96->rev < 4) {
883 			/*
884 			 * Revision less than 004 does not support 64 and
885 			 * 88.2 kHz
886 			 */
887 			if (snd_rme96_capture_getrate(rme96, &n) == 88200) {
888 				snd_rme96_capture_analog_setrate(rme96, 44100);
889 			}
890 			if (snd_rme96_capture_getrate(rme96, &n) == 64000) {
891 				snd_rme96_capture_analog_setrate(rme96, 32000);
892 			}
893 		}
894 		return 0;
895 	default:
896 		return -EINVAL;
897 	}
898 	if (type != RME96_INPUT_ANALOG && RME96_HAS_ANALOG_IN(rme96)) {
899 		rme96->areg &= ~RME96_AR_ANALOG;
900 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
901 	}
902 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
903 	return 0;
904 }
905 
906 static int
907 snd_rme96_getinputtype(struct rme96 *rme96)
908 {
909 	if (rme96->areg & RME96_AR_ANALOG) {
910 		return RME96_INPUT_ANALOG;
911 	}
912 	return ((rme96->wcreg >> RME96_WCR_BITPOS_INP_0) & 1) +
913 		(((rme96->wcreg >> RME96_WCR_BITPOS_INP_1) & 1) << 1);
914 }
915 
916 static void
917 snd_rme96_setframelog(struct rme96 *rme96,
918 		      int n_channels,
919 		      int is_playback)
920 {
921 	int frlog;
922 
923 	if (n_channels == 2) {
924 		frlog = 1;
925 	} else {
926 		/* assume 8 channels */
927 		frlog = 3;
928 	}
929 	if (is_playback) {
930 		frlog += (rme96->wcreg & RME96_WCR_MODE24) ? 2 : 1;
931 		rme96->playback_frlog = frlog;
932 	} else {
933 		frlog += (rme96->wcreg & RME96_WCR_MODE24_2) ? 2 : 1;
934 		rme96->capture_frlog = frlog;
935 	}
936 }
937 
938 static int
939 snd_rme96_playback_setformat(struct rme96 *rme96, snd_pcm_format_t format)
940 {
941 	switch (format) {
942 	case SNDRV_PCM_FORMAT_S16_LE:
943 		rme96->wcreg &= ~RME96_WCR_MODE24;
944 		break;
945 	case SNDRV_PCM_FORMAT_S32_LE:
946 		rme96->wcreg |= RME96_WCR_MODE24;
947 		break;
948 	default:
949 		return -EINVAL;
950 	}
951 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
952 	return 0;
953 }
954 
955 static int
956 snd_rme96_capture_setformat(struct rme96 *rme96, snd_pcm_format_t format)
957 {
958 	switch (format) {
959 	case SNDRV_PCM_FORMAT_S16_LE:
960 		rme96->wcreg &= ~RME96_WCR_MODE24_2;
961 		break;
962 	case SNDRV_PCM_FORMAT_S32_LE:
963 		rme96->wcreg |= RME96_WCR_MODE24_2;
964 		break;
965 	default:
966 		return -EINVAL;
967 	}
968 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
969 	return 0;
970 }
971 
972 static void
973 snd_rme96_set_period_properties(struct rme96 *rme96,
974 				size_t period_bytes)
975 {
976 	switch (period_bytes) {
977 	case RME96_LARGE_BLOCK_SIZE:
978 		rme96->wcreg &= ~RME96_WCR_ISEL;
979 		break;
980 	case RME96_SMALL_BLOCK_SIZE:
981 		rme96->wcreg |= RME96_WCR_ISEL;
982 		break;
983 	default:
984 		snd_BUG();
985 		break;
986 	}
987 	rme96->wcreg &= ~RME96_WCR_IDIS;
988 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
989 }
990 
991 static int
992 snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
993 			     struct snd_pcm_hw_params *params)
994 {
995 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
996 	struct snd_pcm_runtime *runtime = substream->runtime;
997 	int err, rate, dummy;
998 	bool apply_dac_volume = false;
999 
1000 	runtime->dma_area = (void __force *)(rme96->iobase +
1001 					     RME96_IO_PLAY_BUFFER);
1002 	runtime->dma_addr = rme96->port + RME96_IO_PLAY_BUFFER;
1003 	runtime->dma_bytes = RME96_BUFFER_SIZE;
1004 
1005 	spin_lock_irq(&rme96->lock);
1006 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1007             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1008 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
1009 	{
1010                 /* slave clock */
1011                 if ((int)params_rate(params) != rate) {
1012 			err = -EIO;
1013 			goto error;
1014 		}
1015 	} else {
1016 		err = snd_rme96_playback_setrate(rme96, params_rate(params));
1017 		if (err < 0)
1018 			goto error;
1019 		apply_dac_volume = err > 0; /* need to restore volume later? */
1020 	}
1021 
1022 	err = snd_rme96_playback_setformat(rme96, params_format(params));
1023 	if (err < 0)
1024 		goto error;
1025 	snd_rme96_setframelog(rme96, params_channels(params), 1);
1026 	if (rme96->capture_periodsize != 0) {
1027 		if (params_period_size(params) << rme96->playback_frlog !=
1028 		    rme96->capture_periodsize)
1029 		{
1030 			err = -EBUSY;
1031 			goto error;
1032 		}
1033 	}
1034 	rme96->playback_periodsize =
1035 		params_period_size(params) << rme96->playback_frlog;
1036 	snd_rme96_set_period_properties(rme96, rme96->playback_periodsize);
1037 	/* S/PDIF setup */
1038 	if ((rme96->wcreg & RME96_WCR_ADAT) == 0) {
1039 		rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
1040 		writel(rme96->wcreg |= rme96->wcreg_spdif_stream, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1041 	}
1042 
1043 	err = 0;
1044  error:
1045 	spin_unlock_irq(&rme96->lock);
1046 	if (apply_dac_volume) {
1047 		usleep_range(3000, 10000);
1048 		snd_rme96_apply_dac_volume(rme96);
1049 	}
1050 
1051 	return err;
1052 }
1053 
1054 static int
1055 snd_rme96_capture_hw_params(struct snd_pcm_substream *substream,
1056 			    struct snd_pcm_hw_params *params)
1057 {
1058 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1059 	struct snd_pcm_runtime *runtime = substream->runtime;
1060 	int err, isadat, rate;
1061 
1062 	runtime->dma_area = (void __force *)(rme96->iobase +
1063 					     RME96_IO_REC_BUFFER);
1064 	runtime->dma_addr = rme96->port + RME96_IO_REC_BUFFER;
1065 	runtime->dma_bytes = RME96_BUFFER_SIZE;
1066 
1067 	spin_lock_irq(&rme96->lock);
1068 	if ((err = snd_rme96_capture_setformat(rme96, params_format(params))) < 0) {
1069 		spin_unlock_irq(&rme96->lock);
1070 		return err;
1071 	}
1072 	if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1073 		if ((err = snd_rme96_capture_analog_setrate(rme96,
1074 							    params_rate(params))) < 0)
1075 		{
1076 			spin_unlock_irq(&rme96->lock);
1077 			return err;
1078 		}
1079 	} else if ((rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0) {
1080                 if ((int)params_rate(params) != rate) {
1081 			spin_unlock_irq(&rme96->lock);
1082 			return -EIO;
1083                 }
1084                 if ((isadat && runtime->hw.channels_min == 2) ||
1085                     (!isadat && runtime->hw.channels_min == 8))
1086                 {
1087 			spin_unlock_irq(&rme96->lock);
1088 			return -EIO;
1089                 }
1090         }
1091 	snd_rme96_setframelog(rme96, params_channels(params), 0);
1092 	if (rme96->playback_periodsize != 0) {
1093 		if (params_period_size(params) << rme96->capture_frlog !=
1094 		    rme96->playback_periodsize)
1095 		{
1096 			spin_unlock_irq(&rme96->lock);
1097 			return -EBUSY;
1098 		}
1099 	}
1100 	rme96->capture_periodsize =
1101 		params_period_size(params) << rme96->capture_frlog;
1102 	snd_rme96_set_period_properties(rme96, rme96->capture_periodsize);
1103 	spin_unlock_irq(&rme96->lock);
1104 
1105 	return 0;
1106 }
1107 
1108 static void
1109 snd_rme96_trigger(struct rme96 *rme96,
1110 		  int op)
1111 {
1112 	if (op & RME96_TB_RESET_PLAYPOS)
1113 		writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1114 	if (op & RME96_TB_RESET_CAPTUREPOS)
1115 		writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1116 	if (op & RME96_TB_CLEAR_PLAYBACK_IRQ) {
1117 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1118 		if (rme96->rcreg & RME96_RCR_IRQ)
1119 			writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1120 	}
1121 	if (op & RME96_TB_CLEAR_CAPTURE_IRQ) {
1122 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1123 		if (rme96->rcreg & RME96_RCR_IRQ_2)
1124 			writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1125 	}
1126 	if (op & RME96_TB_START_PLAYBACK)
1127 		rme96->wcreg |= RME96_WCR_START;
1128 	if (op & RME96_TB_STOP_PLAYBACK)
1129 		rme96->wcreg &= ~RME96_WCR_START;
1130 	if (op & RME96_TB_START_CAPTURE)
1131 		rme96->wcreg |= RME96_WCR_START_2;
1132 	if (op & RME96_TB_STOP_CAPTURE)
1133 		rme96->wcreg &= ~RME96_WCR_START_2;
1134 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1135 }
1136 
1137 
1138 
1139 static irqreturn_t
1140 snd_rme96_interrupt(int irq,
1141 		    void *dev_id)
1142 {
1143 	struct rme96 *rme96 = (struct rme96 *)dev_id;
1144 
1145 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1146 	/* fastpath out, to ease interrupt sharing */
1147 	if (!((rme96->rcreg & RME96_RCR_IRQ) ||
1148 	      (rme96->rcreg & RME96_RCR_IRQ_2)))
1149 	{
1150 		return IRQ_NONE;
1151 	}
1152 
1153 	if (rme96->rcreg & RME96_RCR_IRQ) {
1154 		/* playback */
1155                 snd_pcm_period_elapsed(rme96->playback_substream);
1156 		writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1157 	}
1158 	if (rme96->rcreg & RME96_RCR_IRQ_2) {
1159 		/* capture */
1160 		snd_pcm_period_elapsed(rme96->capture_substream);
1161 		writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1162 	}
1163 	return IRQ_HANDLED;
1164 }
1165 
1166 static const unsigned int period_bytes[] = { RME96_SMALL_BLOCK_SIZE, RME96_LARGE_BLOCK_SIZE };
1167 
1168 static const struct snd_pcm_hw_constraint_list hw_constraints_period_bytes = {
1169 	.count = ARRAY_SIZE(period_bytes),
1170 	.list = period_bytes,
1171 	.mask = 0
1172 };
1173 
1174 static void
1175 rme96_set_buffer_size_constraint(struct rme96 *rme96,
1176 				 struct snd_pcm_runtime *runtime)
1177 {
1178 	unsigned int size;
1179 
1180 	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1181 				     RME96_BUFFER_SIZE);
1182 	if ((size = rme96->playback_periodsize) != 0 ||
1183 	    (size = rme96->capture_periodsize) != 0)
1184 		snd_pcm_hw_constraint_single(runtime,
1185 					     SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1186 					     size);
1187 	else
1188 		snd_pcm_hw_constraint_list(runtime, 0,
1189 					   SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1190 					   &hw_constraints_period_bytes);
1191 }
1192 
1193 static int
1194 snd_rme96_playback_spdif_open(struct snd_pcm_substream *substream)
1195 {
1196         int rate, dummy;
1197 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1198 	struct snd_pcm_runtime *runtime = substream->runtime;
1199 
1200 	snd_pcm_set_sync(substream);
1201 	spin_lock_irq(&rme96->lock);
1202 	if (rme96->playback_substream) {
1203 		spin_unlock_irq(&rme96->lock);
1204                 return -EBUSY;
1205         }
1206 	rme96->wcreg &= ~RME96_WCR_ADAT;
1207 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1208 	rme96->playback_substream = substream;
1209 	spin_unlock_irq(&rme96->lock);
1210 
1211 	runtime->hw = snd_rme96_playback_spdif_info;
1212 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1213             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1214 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
1215 	{
1216                 /* slave clock */
1217                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1218                 runtime->hw.rate_min = rate;
1219                 runtime->hw.rate_max = rate;
1220 	}
1221 	rme96_set_buffer_size_constraint(rme96, runtime);
1222 
1223 	rme96->wcreg_spdif_stream = rme96->wcreg_spdif;
1224 	rme96->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1225 	snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1226 		       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1227 	return 0;
1228 }
1229 
1230 static int
1231 snd_rme96_capture_spdif_open(struct snd_pcm_substream *substream)
1232 {
1233         int isadat, rate;
1234 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1235 	struct snd_pcm_runtime *runtime = substream->runtime;
1236 
1237 	snd_pcm_set_sync(substream);
1238 	runtime->hw = snd_rme96_capture_spdif_info;
1239         if (snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1240             (rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0)
1241         {
1242                 if (isadat) {
1243                         return -EIO;
1244                 }
1245                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1246                 runtime->hw.rate_min = rate;
1247                 runtime->hw.rate_max = rate;
1248         }
1249 
1250 	spin_lock_irq(&rme96->lock);
1251 	if (rme96->capture_substream) {
1252 		spin_unlock_irq(&rme96->lock);
1253                 return -EBUSY;
1254         }
1255 	rme96->capture_substream = substream;
1256 	spin_unlock_irq(&rme96->lock);
1257 
1258 	rme96_set_buffer_size_constraint(rme96, runtime);
1259 	return 0;
1260 }
1261 
1262 static int
1263 snd_rme96_playback_adat_open(struct snd_pcm_substream *substream)
1264 {
1265         int rate, dummy;
1266 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1267 	struct snd_pcm_runtime *runtime = substream->runtime;
1268 
1269 	snd_pcm_set_sync(substream);
1270 	spin_lock_irq(&rme96->lock);
1271 	if (rme96->playback_substream) {
1272 		spin_unlock_irq(&rme96->lock);
1273                 return -EBUSY;
1274         }
1275 	rme96->wcreg |= RME96_WCR_ADAT;
1276 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1277 	rme96->playback_substream = substream;
1278 	spin_unlock_irq(&rme96->lock);
1279 
1280 	runtime->hw = snd_rme96_playback_adat_info;
1281 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1282             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1283 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
1284 	{
1285                 /* slave clock */
1286                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1287                 runtime->hw.rate_min = rate;
1288                 runtime->hw.rate_max = rate;
1289 	}
1290 	rme96_set_buffer_size_constraint(rme96, runtime);
1291 	return 0;
1292 }
1293 
1294 static int
1295 snd_rme96_capture_adat_open(struct snd_pcm_substream *substream)
1296 {
1297         int isadat, rate;
1298 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1299 	struct snd_pcm_runtime *runtime = substream->runtime;
1300 
1301 	snd_pcm_set_sync(substream);
1302 	runtime->hw = snd_rme96_capture_adat_info;
1303         if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1304                 /* makes no sense to use analog input. Note that analog
1305                    expension cards AEB4/8-I are RME96_INPUT_INTERNAL */
1306                 return -EIO;
1307         }
1308         if ((rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0) {
1309                 if (!isadat) {
1310                         return -EIO;
1311                 }
1312                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1313                 runtime->hw.rate_min = rate;
1314                 runtime->hw.rate_max = rate;
1315         }
1316 
1317 	spin_lock_irq(&rme96->lock);
1318 	if (rme96->capture_substream) {
1319 		spin_unlock_irq(&rme96->lock);
1320                 return -EBUSY;
1321         }
1322 	rme96->capture_substream = substream;
1323 	spin_unlock_irq(&rme96->lock);
1324 
1325 	rme96_set_buffer_size_constraint(rme96, runtime);
1326 	return 0;
1327 }
1328 
1329 static int
1330 snd_rme96_playback_close(struct snd_pcm_substream *substream)
1331 {
1332 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1333 	int spdif = 0;
1334 
1335 	spin_lock_irq(&rme96->lock);
1336 	if (RME96_ISPLAYING(rme96)) {
1337 		snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1338 	}
1339 	rme96->playback_substream = NULL;
1340 	rme96->playback_periodsize = 0;
1341 	spdif = (rme96->wcreg & RME96_WCR_ADAT) == 0;
1342 	spin_unlock_irq(&rme96->lock);
1343 	if (spdif) {
1344 		rme96->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1345 		snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1346 			       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1347 	}
1348 	return 0;
1349 }
1350 
1351 static int
1352 snd_rme96_capture_close(struct snd_pcm_substream *substream)
1353 {
1354 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1355 
1356 	spin_lock_irq(&rme96->lock);
1357 	if (RME96_ISRECORDING(rme96)) {
1358 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1359 	}
1360 	rme96->capture_substream = NULL;
1361 	rme96->capture_periodsize = 0;
1362 	spin_unlock_irq(&rme96->lock);
1363 	return 0;
1364 }
1365 
1366 static int
1367 snd_rme96_playback_prepare(struct snd_pcm_substream *substream)
1368 {
1369 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1370 
1371 	spin_lock_irq(&rme96->lock);
1372 	if (RME96_ISPLAYING(rme96)) {
1373 		snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1374 	}
1375 	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1376 	spin_unlock_irq(&rme96->lock);
1377 	return 0;
1378 }
1379 
1380 static int
1381 snd_rme96_capture_prepare(struct snd_pcm_substream *substream)
1382 {
1383 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1384 
1385 	spin_lock_irq(&rme96->lock);
1386 	if (RME96_ISRECORDING(rme96)) {
1387 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1388 	}
1389 	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1390 	spin_unlock_irq(&rme96->lock);
1391 	return 0;
1392 }
1393 
1394 static int
1395 snd_rme96_playback_trigger(struct snd_pcm_substream *substream,
1396 			   int cmd)
1397 {
1398 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1399 	struct snd_pcm_substream *s;
1400 	bool sync;
1401 
1402 	snd_pcm_group_for_each_entry(s, substream) {
1403 		if (snd_pcm_substream_chip(s) == rme96)
1404 			snd_pcm_trigger_done(s, substream);
1405 	}
1406 
1407 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1408 	       (rme96->playback_substream->group ==
1409 		rme96->capture_substream->group);
1410 
1411 	switch (cmd) {
1412 	case SNDRV_PCM_TRIGGER_START:
1413 		if (!RME96_ISPLAYING(rme96)) {
1414 			if (substream != rme96->playback_substream)
1415 				return -EBUSY;
1416 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1417 						 : RME96_START_PLAYBACK);
1418 		}
1419 		break;
1420 
1421 	case SNDRV_PCM_TRIGGER_SUSPEND:
1422 	case SNDRV_PCM_TRIGGER_STOP:
1423 		if (RME96_ISPLAYING(rme96)) {
1424 			if (substream != rme96->playback_substream)
1425 				return -EBUSY;
1426 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1427 						 :  RME96_STOP_PLAYBACK);
1428 		}
1429 		break;
1430 
1431 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1432 		if (RME96_ISPLAYING(rme96))
1433 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1434 						 : RME96_STOP_PLAYBACK);
1435 		break;
1436 
1437 	case SNDRV_PCM_TRIGGER_RESUME:
1438 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1439 		if (!RME96_ISPLAYING(rme96))
1440 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1441 						 : RME96_RESUME_PLAYBACK);
1442 		break;
1443 
1444 	default:
1445 		return -EINVAL;
1446 	}
1447 
1448 	return 0;
1449 }
1450 
1451 static int
1452 snd_rme96_capture_trigger(struct snd_pcm_substream *substream,
1453 			  int cmd)
1454 {
1455 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1456 	struct snd_pcm_substream *s;
1457 	bool sync;
1458 
1459 	snd_pcm_group_for_each_entry(s, substream) {
1460 		if (snd_pcm_substream_chip(s) == rme96)
1461 			snd_pcm_trigger_done(s, substream);
1462 	}
1463 
1464 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1465 	       (rme96->playback_substream->group ==
1466 		rme96->capture_substream->group);
1467 
1468 	switch (cmd) {
1469 	case SNDRV_PCM_TRIGGER_START:
1470 		if (!RME96_ISRECORDING(rme96)) {
1471 			if (substream != rme96->capture_substream)
1472 				return -EBUSY;
1473 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1474 						 : RME96_START_CAPTURE);
1475 		}
1476 		break;
1477 
1478 	case SNDRV_PCM_TRIGGER_SUSPEND:
1479 	case SNDRV_PCM_TRIGGER_STOP:
1480 		if (RME96_ISRECORDING(rme96)) {
1481 			if (substream != rme96->capture_substream)
1482 				return -EBUSY;
1483 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1484 						 : RME96_STOP_CAPTURE);
1485 		}
1486 		break;
1487 
1488 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1489 		if (RME96_ISRECORDING(rme96))
1490 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1491 						 : RME96_STOP_CAPTURE);
1492 		break;
1493 
1494 	case SNDRV_PCM_TRIGGER_RESUME:
1495 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1496 		if (!RME96_ISRECORDING(rme96))
1497 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1498 						 : RME96_RESUME_CAPTURE);
1499 		break;
1500 
1501 	default:
1502 		return -EINVAL;
1503 	}
1504 
1505 	return 0;
1506 }
1507 
1508 static snd_pcm_uframes_t
1509 snd_rme96_playback_pointer(struct snd_pcm_substream *substream)
1510 {
1511 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1512 	return snd_rme96_playback_ptr(rme96);
1513 }
1514 
1515 static snd_pcm_uframes_t
1516 snd_rme96_capture_pointer(struct snd_pcm_substream *substream)
1517 {
1518 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1519 	return snd_rme96_capture_ptr(rme96);
1520 }
1521 
1522 static const struct snd_pcm_ops snd_rme96_playback_spdif_ops = {
1523 	.open =		snd_rme96_playback_spdif_open,
1524 	.close =	snd_rme96_playback_close,
1525 	.ioctl =	snd_pcm_lib_ioctl,
1526 	.hw_params =	snd_rme96_playback_hw_params,
1527 	.prepare =	snd_rme96_playback_prepare,
1528 	.trigger =	snd_rme96_playback_trigger,
1529 	.pointer =	snd_rme96_playback_pointer,
1530 	.copy_user =	snd_rme96_playback_copy,
1531 	.copy_kernel =	snd_rme96_playback_copy_kernel,
1532 	.fill_silence =	snd_rme96_playback_silence,
1533 	.mmap =		snd_pcm_lib_mmap_iomem,
1534 };
1535 
1536 static const struct snd_pcm_ops snd_rme96_capture_spdif_ops = {
1537 	.open =		snd_rme96_capture_spdif_open,
1538 	.close =	snd_rme96_capture_close,
1539 	.ioctl =	snd_pcm_lib_ioctl,
1540 	.hw_params =	snd_rme96_capture_hw_params,
1541 	.prepare =	snd_rme96_capture_prepare,
1542 	.trigger =	snd_rme96_capture_trigger,
1543 	.pointer =	snd_rme96_capture_pointer,
1544 	.copy_user =	snd_rme96_capture_copy,
1545 	.copy_kernel =	snd_rme96_capture_copy_kernel,
1546 	.mmap =		snd_pcm_lib_mmap_iomem,
1547 };
1548 
1549 static const struct snd_pcm_ops snd_rme96_playback_adat_ops = {
1550 	.open =		snd_rme96_playback_adat_open,
1551 	.close =	snd_rme96_playback_close,
1552 	.ioctl =	snd_pcm_lib_ioctl,
1553 	.hw_params =	snd_rme96_playback_hw_params,
1554 	.prepare =	snd_rme96_playback_prepare,
1555 	.trigger =	snd_rme96_playback_trigger,
1556 	.pointer =	snd_rme96_playback_pointer,
1557 	.copy_user =	snd_rme96_playback_copy,
1558 	.copy_kernel =	snd_rme96_playback_copy_kernel,
1559 	.fill_silence =	snd_rme96_playback_silence,
1560 	.mmap =		snd_pcm_lib_mmap_iomem,
1561 };
1562 
1563 static const struct snd_pcm_ops snd_rme96_capture_adat_ops = {
1564 	.open =		snd_rme96_capture_adat_open,
1565 	.close =	snd_rme96_capture_close,
1566 	.ioctl =	snd_pcm_lib_ioctl,
1567 	.hw_params =	snd_rme96_capture_hw_params,
1568 	.prepare =	snd_rme96_capture_prepare,
1569 	.trigger =	snd_rme96_capture_trigger,
1570 	.pointer =	snd_rme96_capture_pointer,
1571 	.copy_user =	snd_rme96_capture_copy,
1572 	.copy_kernel =	snd_rme96_capture_copy_kernel,
1573 	.mmap =		snd_pcm_lib_mmap_iomem,
1574 };
1575 
1576 static void
1577 snd_rme96_free(void *private_data)
1578 {
1579 	struct rme96 *rme96 = (struct rme96 *)private_data;
1580 
1581 	if (!rme96)
1582 	        return;
1583 
1584 	if (rme96->irq >= 0) {
1585 		snd_rme96_trigger(rme96, RME96_STOP_BOTH);
1586 		rme96->areg &= ~RME96_AR_DAC_EN;
1587 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1588 		free_irq(rme96->irq, (void *)rme96);
1589 		rme96->irq = -1;
1590 	}
1591 	if (rme96->iobase) {
1592 		iounmap(rme96->iobase);
1593 		rme96->iobase = NULL;
1594 	}
1595 	if (rme96->port) {
1596 		pci_release_regions(rme96->pci);
1597 		rme96->port = 0;
1598 	}
1599 #ifdef CONFIG_PM_SLEEP
1600 	vfree(rme96->playback_suspend_buffer);
1601 	vfree(rme96->capture_suspend_buffer);
1602 #endif
1603 	pci_disable_device(rme96->pci);
1604 }
1605 
1606 static void
1607 snd_rme96_free_spdif_pcm(struct snd_pcm *pcm)
1608 {
1609 	struct rme96 *rme96 = pcm->private_data;
1610 	rme96->spdif_pcm = NULL;
1611 }
1612 
1613 static void
1614 snd_rme96_free_adat_pcm(struct snd_pcm *pcm)
1615 {
1616 	struct rme96 *rme96 = pcm->private_data;
1617 	rme96->adat_pcm = NULL;
1618 }
1619 
1620 static int
1621 snd_rme96_create(struct rme96 *rme96)
1622 {
1623 	struct pci_dev *pci = rme96->pci;
1624 	int err;
1625 
1626 	rme96->irq = -1;
1627 	spin_lock_init(&rme96->lock);
1628 
1629 	if ((err = pci_enable_device(pci)) < 0)
1630 		return err;
1631 
1632 	if ((err = pci_request_regions(pci, "RME96")) < 0)
1633 		return err;
1634 	rme96->port = pci_resource_start(rme96->pci, 0);
1635 
1636 	rme96->iobase = ioremap_nocache(rme96->port, RME96_IO_SIZE);
1637 	if (!rme96->iobase) {
1638 		dev_err(rme96->card->dev,
1639 			"unable to remap memory region 0x%lx-0x%lx\n",
1640 			rme96->port, rme96->port + RME96_IO_SIZE - 1);
1641 		return -ENOMEM;
1642 	}
1643 
1644 	if (request_irq(pci->irq, snd_rme96_interrupt, IRQF_SHARED,
1645 			KBUILD_MODNAME, rme96)) {
1646 		dev_err(rme96->card->dev, "unable to grab IRQ %d\n", pci->irq);
1647 		return -EBUSY;
1648 	}
1649 	rme96->irq = pci->irq;
1650 
1651 	/* read the card's revision number */
1652 	pci_read_config_byte(pci, 8, &rme96->rev);
1653 
1654 	/* set up ALSA pcm device for S/PDIF */
1655 	if ((err = snd_pcm_new(rme96->card, "Digi96 IEC958", 0,
1656 			       1, 1, &rme96->spdif_pcm)) < 0)
1657 	{
1658 		return err;
1659 	}
1660 	rme96->spdif_pcm->private_data = rme96;
1661 	rme96->spdif_pcm->private_free = snd_rme96_free_spdif_pcm;
1662 	strcpy(rme96->spdif_pcm->name, "Digi96 IEC958");
1663 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_spdif_ops);
1664 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_spdif_ops);
1665 
1666 	rme96->spdif_pcm->info_flags = 0;
1667 
1668 	/* set up ALSA pcm device for ADAT */
1669 	if (pci->device == PCI_DEVICE_ID_RME_DIGI96) {
1670 		/* ADAT is not available on the base model */
1671 		rme96->adat_pcm = NULL;
1672 	} else {
1673 		if ((err = snd_pcm_new(rme96->card, "Digi96 ADAT", 1,
1674 				       1, 1, &rme96->adat_pcm)) < 0)
1675 		{
1676 			return err;
1677 		}
1678 		rme96->adat_pcm->private_data = rme96;
1679 		rme96->adat_pcm->private_free = snd_rme96_free_adat_pcm;
1680 		strcpy(rme96->adat_pcm->name, "Digi96 ADAT");
1681 		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_adat_ops);
1682 		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_adat_ops);
1683 
1684 		rme96->adat_pcm->info_flags = 0;
1685 	}
1686 
1687 	rme96->playback_periodsize = 0;
1688 	rme96->capture_periodsize = 0;
1689 
1690 	/* make sure playback/capture is stopped, if by some reason active */
1691 	snd_rme96_trigger(rme96, RME96_STOP_BOTH);
1692 
1693 	/* set default values in registers */
1694 	rme96->wcreg =
1695 		RME96_WCR_FREQ_1 | /* set 44.1 kHz playback */
1696 		RME96_WCR_SEL |    /* normal playback */
1697 		RME96_WCR_MASTER | /* set to master clock mode */
1698 		RME96_WCR_INP_0;   /* set coaxial input */
1699 
1700 	rme96->areg = RME96_AR_FREQPAD_1; /* set 44.1 kHz analog capture */
1701 
1702 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1703 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1704 
1705 	/* reset the ADC */
1706 	writel(rme96->areg | RME96_AR_PD2,
1707 	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
1708 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1709 
1710 	/* reset and enable the DAC (order is important). */
1711 	snd_rme96_reset_dac(rme96);
1712 	rme96->areg |= RME96_AR_DAC_EN;
1713 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1714 
1715 	/* reset playback and record buffer pointers */
1716 	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1717 	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1718 
1719 	/* reset volume */
1720 	rme96->vol[0] = rme96->vol[1] = 0;
1721 	if (RME96_HAS_ANALOG_OUT(rme96)) {
1722 		snd_rme96_apply_dac_volume(rme96);
1723 	}
1724 
1725 	/* init switch interface */
1726 	if ((err = snd_rme96_create_switches(rme96->card, rme96)) < 0) {
1727 		return err;
1728 	}
1729 
1730         /* init proc interface */
1731 	snd_rme96_proc_init(rme96);
1732 
1733 	return 0;
1734 }
1735 
1736 /*
1737  * proc interface
1738  */
1739 
1740 static void
1741 snd_rme96_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1742 {
1743 	int n;
1744 	struct rme96 *rme96 = entry->private_data;
1745 
1746 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1747 
1748 	snd_iprintf(buffer, rme96->card->longname);
1749 	snd_iprintf(buffer, " (index #%d)\n", rme96->card->number + 1);
1750 
1751 	snd_iprintf(buffer, "\nGeneral settings\n");
1752 	if (rme96->wcreg & RME96_WCR_IDIS) {
1753 		snd_iprintf(buffer, "  period size: N/A (interrupts "
1754 			    "disabled)\n");
1755 	} else if (rme96->wcreg & RME96_WCR_ISEL) {
1756 		snd_iprintf(buffer, "  period size: 2048 bytes\n");
1757 	} else {
1758 		snd_iprintf(buffer, "  period size: 8192 bytes\n");
1759 	}
1760 	snd_iprintf(buffer, "\nInput settings\n");
1761 	switch (snd_rme96_getinputtype(rme96)) {
1762 	case RME96_INPUT_OPTICAL:
1763 		snd_iprintf(buffer, "  input: optical");
1764 		break;
1765 	case RME96_INPUT_COAXIAL:
1766 		snd_iprintf(buffer, "  input: coaxial");
1767 		break;
1768 	case RME96_INPUT_INTERNAL:
1769 		snd_iprintf(buffer, "  input: internal");
1770 		break;
1771 	case RME96_INPUT_XLR:
1772 		snd_iprintf(buffer, "  input: XLR");
1773 		break;
1774 	case RME96_INPUT_ANALOG:
1775 		snd_iprintf(buffer, "  input: analog");
1776 		break;
1777 	}
1778 	if (snd_rme96_capture_getrate(rme96, &n) < 0) {
1779 		snd_iprintf(buffer, "\n  sample rate: no valid signal\n");
1780 	} else {
1781 		if (n) {
1782 			snd_iprintf(buffer, " (8 channels)\n");
1783 		} else {
1784 			snd_iprintf(buffer, " (2 channels)\n");
1785 		}
1786 		snd_iprintf(buffer, "  sample rate: %d Hz\n",
1787 			    snd_rme96_capture_getrate(rme96, &n));
1788 	}
1789 	if (rme96->wcreg & RME96_WCR_MODE24_2) {
1790 		snd_iprintf(buffer, "  sample format: 24 bit\n");
1791 	} else {
1792 		snd_iprintf(buffer, "  sample format: 16 bit\n");
1793 	}
1794 
1795 	snd_iprintf(buffer, "\nOutput settings\n");
1796 	if (rme96->wcreg & RME96_WCR_SEL) {
1797 		snd_iprintf(buffer, "  output signal: normal playback\n");
1798 	} else {
1799 		snd_iprintf(buffer, "  output signal: same as input\n");
1800 	}
1801 	snd_iprintf(buffer, "  sample rate: %d Hz\n",
1802 		    snd_rme96_playback_getrate(rme96));
1803 	if (rme96->wcreg & RME96_WCR_MODE24) {
1804 		snd_iprintf(buffer, "  sample format: 24 bit\n");
1805 	} else {
1806 		snd_iprintf(buffer, "  sample format: 16 bit\n");
1807 	}
1808 	if (rme96->areg & RME96_AR_WSEL) {
1809 		snd_iprintf(buffer, "  sample clock source: word clock\n");
1810 	} else if (rme96->wcreg & RME96_WCR_MASTER) {
1811 		snd_iprintf(buffer, "  sample clock source: internal\n");
1812 	} else if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1813 		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to analog input setting)\n");
1814 	} else if (snd_rme96_capture_getrate(rme96, &n) < 0) {
1815 		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to no valid signal)\n");
1816 	} else {
1817 		snd_iprintf(buffer, "  sample clock source: autosync\n");
1818 	}
1819 	if (rme96->wcreg & RME96_WCR_PRO) {
1820 		snd_iprintf(buffer, "  format: AES/EBU (professional)\n");
1821 	} else {
1822 		snd_iprintf(buffer, "  format: IEC958 (consumer)\n");
1823 	}
1824 	if (rme96->wcreg & RME96_WCR_EMP) {
1825 		snd_iprintf(buffer, "  emphasis: on\n");
1826 	} else {
1827 		snd_iprintf(buffer, "  emphasis: off\n");
1828 	}
1829 	if (rme96->wcreg & RME96_WCR_DOLBY) {
1830 		snd_iprintf(buffer, "  non-audio (dolby): on\n");
1831 	} else {
1832 		snd_iprintf(buffer, "  non-audio (dolby): off\n");
1833 	}
1834 	if (RME96_HAS_ANALOG_IN(rme96)) {
1835 		snd_iprintf(buffer, "\nAnalog output settings\n");
1836 		switch (snd_rme96_getmontracks(rme96)) {
1837 		case RME96_MONITOR_TRACKS_1_2:
1838 			snd_iprintf(buffer, "  monitored ADAT tracks: 1+2\n");
1839 			break;
1840 		case RME96_MONITOR_TRACKS_3_4:
1841 			snd_iprintf(buffer, "  monitored ADAT tracks: 3+4\n");
1842 			break;
1843 		case RME96_MONITOR_TRACKS_5_6:
1844 			snd_iprintf(buffer, "  monitored ADAT tracks: 5+6\n");
1845 			break;
1846 		case RME96_MONITOR_TRACKS_7_8:
1847 			snd_iprintf(buffer, "  monitored ADAT tracks: 7+8\n");
1848 			break;
1849 		}
1850 		switch (snd_rme96_getattenuation(rme96)) {
1851 		case RME96_ATTENUATION_0:
1852 			snd_iprintf(buffer, "  attenuation: 0 dB\n");
1853 			break;
1854 		case RME96_ATTENUATION_6:
1855 			snd_iprintf(buffer, "  attenuation: -6 dB\n");
1856 			break;
1857 		case RME96_ATTENUATION_12:
1858 			snd_iprintf(buffer, "  attenuation: -12 dB\n");
1859 			break;
1860 		case RME96_ATTENUATION_18:
1861 			snd_iprintf(buffer, "  attenuation: -18 dB\n");
1862 			break;
1863 		}
1864 		snd_iprintf(buffer, "  volume left: %u\n", rme96->vol[0]);
1865 		snd_iprintf(buffer, "  volume right: %u\n", rme96->vol[1]);
1866 	}
1867 }
1868 
1869 static void snd_rme96_proc_init(struct rme96 *rme96)
1870 {
1871 	struct snd_info_entry *entry;
1872 
1873 	if (! snd_card_proc_new(rme96->card, "rme96", &entry))
1874 		snd_info_set_text_ops(entry, rme96, snd_rme96_proc_read);
1875 }
1876 
1877 /*
1878  * control interface
1879  */
1880 
1881 #define snd_rme96_info_loopback_control		snd_ctl_boolean_mono_info
1882 
1883 static int
1884 snd_rme96_get_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1885 {
1886 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1887 
1888 	spin_lock_irq(&rme96->lock);
1889 	ucontrol->value.integer.value[0] = rme96->wcreg & RME96_WCR_SEL ? 0 : 1;
1890 	spin_unlock_irq(&rme96->lock);
1891 	return 0;
1892 }
1893 static int
1894 snd_rme96_put_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1895 {
1896 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1897 	unsigned int val;
1898 	int change;
1899 
1900 	val = ucontrol->value.integer.value[0] ? 0 : RME96_WCR_SEL;
1901 	spin_lock_irq(&rme96->lock);
1902 	val = (rme96->wcreg & ~RME96_WCR_SEL) | val;
1903 	change = val != rme96->wcreg;
1904 	rme96->wcreg = val;
1905 	writel(val, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1906 	spin_unlock_irq(&rme96->lock);
1907 	return change;
1908 }
1909 
1910 static int
1911 snd_rme96_info_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1912 {
1913 	static const char * const _texts[5] = {
1914 		"Optical", "Coaxial", "Internal", "XLR", "Analog"
1915 	};
1916 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1917 	const char *texts[5] = {
1918 		_texts[0], _texts[1], _texts[2], _texts[3], _texts[4]
1919 	};
1920 	int num_items;
1921 
1922 	switch (rme96->pci->device) {
1923 	case PCI_DEVICE_ID_RME_DIGI96:
1924 	case PCI_DEVICE_ID_RME_DIGI96_8:
1925 		num_items = 3;
1926 		break;
1927 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1928 		num_items = 4;
1929 		break;
1930 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1931 		if (rme96->rev > 4) {
1932 			/* PST */
1933 			num_items = 4;
1934 			texts[3] = _texts[4]; /* Analog instead of XLR */
1935 		} else {
1936 			/* PAD */
1937 			num_items = 5;
1938 		}
1939 		break;
1940 	default:
1941 		snd_BUG();
1942 		return -EINVAL;
1943 	}
1944 	return snd_ctl_enum_info(uinfo, 1, num_items, texts);
1945 }
1946 static int
1947 snd_rme96_get_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1948 {
1949 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1950 	unsigned int items = 3;
1951 
1952 	spin_lock_irq(&rme96->lock);
1953 	ucontrol->value.enumerated.item[0] = snd_rme96_getinputtype(rme96);
1954 
1955 	switch (rme96->pci->device) {
1956 	case PCI_DEVICE_ID_RME_DIGI96:
1957 	case PCI_DEVICE_ID_RME_DIGI96_8:
1958 		items = 3;
1959 		break;
1960 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1961 		items = 4;
1962 		break;
1963 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1964 		if (rme96->rev > 4) {
1965 			/* for handling PST case, (INPUT_ANALOG is moved to INPUT_XLR */
1966 			if (ucontrol->value.enumerated.item[0] == RME96_INPUT_ANALOG) {
1967 				ucontrol->value.enumerated.item[0] = RME96_INPUT_XLR;
1968 			}
1969 			items = 4;
1970 		} else {
1971 			items = 5;
1972 		}
1973 		break;
1974 	default:
1975 		snd_BUG();
1976 		break;
1977 	}
1978 	if (ucontrol->value.enumerated.item[0] >= items) {
1979 		ucontrol->value.enumerated.item[0] = items - 1;
1980 	}
1981 
1982 	spin_unlock_irq(&rme96->lock);
1983 	return 0;
1984 }
1985 static int
1986 snd_rme96_put_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1987 {
1988 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1989 	unsigned int val;
1990 	int change, items = 3;
1991 
1992 	switch (rme96->pci->device) {
1993 	case PCI_DEVICE_ID_RME_DIGI96:
1994 	case PCI_DEVICE_ID_RME_DIGI96_8:
1995 		items = 3;
1996 		break;
1997 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1998 		items = 4;
1999 		break;
2000 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
2001 		if (rme96->rev > 4) {
2002 			items = 4;
2003 		} else {
2004 			items = 5;
2005 		}
2006 		break;
2007 	default:
2008 		snd_BUG();
2009 		break;
2010 	}
2011 	val = ucontrol->value.enumerated.item[0] % items;
2012 
2013 	/* special case for PST */
2014 	if (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && rme96->rev > 4) {
2015 		if (val == RME96_INPUT_XLR) {
2016 			val = RME96_INPUT_ANALOG;
2017 		}
2018 	}
2019 
2020 	spin_lock_irq(&rme96->lock);
2021 	change = (int)val != snd_rme96_getinputtype(rme96);
2022 	snd_rme96_setinputtype(rme96, val);
2023 	spin_unlock_irq(&rme96->lock);
2024 	return change;
2025 }
2026 
2027 static int
2028 snd_rme96_info_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2029 {
2030 	static const char * const texts[3] = { "AutoSync", "Internal", "Word" };
2031 
2032 	return snd_ctl_enum_info(uinfo, 1, 3, texts);
2033 }
2034 static int
2035 snd_rme96_get_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2036 {
2037 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2038 
2039 	spin_lock_irq(&rme96->lock);
2040 	ucontrol->value.enumerated.item[0] = snd_rme96_getclockmode(rme96);
2041 	spin_unlock_irq(&rme96->lock);
2042 	return 0;
2043 }
2044 static int
2045 snd_rme96_put_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2046 {
2047 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2048 	unsigned int val;
2049 	int change;
2050 
2051 	val = ucontrol->value.enumerated.item[0] % 3;
2052 	spin_lock_irq(&rme96->lock);
2053 	change = (int)val != snd_rme96_getclockmode(rme96);
2054 	snd_rme96_setclockmode(rme96, val);
2055 	spin_unlock_irq(&rme96->lock);
2056 	return change;
2057 }
2058 
2059 static int
2060 snd_rme96_info_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2061 {
2062 	static const char * const texts[4] = {
2063 		"0 dB", "-6 dB", "-12 dB", "-18 dB"
2064 	};
2065 
2066 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
2067 }
2068 static int
2069 snd_rme96_get_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2070 {
2071 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2072 
2073 	spin_lock_irq(&rme96->lock);
2074 	ucontrol->value.enumerated.item[0] = snd_rme96_getattenuation(rme96);
2075 	spin_unlock_irq(&rme96->lock);
2076 	return 0;
2077 }
2078 static int
2079 snd_rme96_put_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2080 {
2081 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2082 	unsigned int val;
2083 	int change;
2084 
2085 	val = ucontrol->value.enumerated.item[0] % 4;
2086 	spin_lock_irq(&rme96->lock);
2087 
2088 	change = (int)val != snd_rme96_getattenuation(rme96);
2089 	snd_rme96_setattenuation(rme96, val);
2090 	spin_unlock_irq(&rme96->lock);
2091 	return change;
2092 }
2093 
2094 static int
2095 snd_rme96_info_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2096 {
2097 	static const char * const texts[4] = { "1+2", "3+4", "5+6", "7+8" };
2098 
2099 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
2100 }
2101 static int
2102 snd_rme96_get_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2103 {
2104 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2105 
2106 	spin_lock_irq(&rme96->lock);
2107 	ucontrol->value.enumerated.item[0] = snd_rme96_getmontracks(rme96);
2108 	spin_unlock_irq(&rme96->lock);
2109 	return 0;
2110 }
2111 static int
2112 snd_rme96_put_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2113 {
2114 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2115 	unsigned int val;
2116 	int change;
2117 
2118 	val = ucontrol->value.enumerated.item[0] % 4;
2119 	spin_lock_irq(&rme96->lock);
2120 	change = (int)val != snd_rme96_getmontracks(rme96);
2121 	snd_rme96_setmontracks(rme96, val);
2122 	spin_unlock_irq(&rme96->lock);
2123 	return change;
2124 }
2125 
2126 static u32 snd_rme96_convert_from_aes(struct snd_aes_iec958 *aes)
2127 {
2128 	u32 val = 0;
2129 	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME96_WCR_PRO : 0;
2130 	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME96_WCR_DOLBY : 0;
2131 	if (val & RME96_WCR_PRO)
2132 		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2133 	else
2134 		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2135 	return val;
2136 }
2137 
2138 static void snd_rme96_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)
2139 {
2140 	aes->status[0] = ((val & RME96_WCR_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
2141 			 ((val & RME96_WCR_DOLBY) ? IEC958_AES0_NONAUDIO : 0);
2142 	if (val & RME96_WCR_PRO)
2143 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
2144 	else
2145 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
2146 }
2147 
2148 static int snd_rme96_control_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2149 {
2150 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2151 	uinfo->count = 1;
2152 	return 0;
2153 }
2154 
2155 static int snd_rme96_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2156 {
2157 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2158 
2159 	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif);
2160 	return 0;
2161 }
2162 
2163 static int snd_rme96_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2164 {
2165 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2166 	int change;
2167 	u32 val;
2168 
2169 	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
2170 	spin_lock_irq(&rme96->lock);
2171 	change = val != rme96->wcreg_spdif;
2172 	rme96->wcreg_spdif = val;
2173 	spin_unlock_irq(&rme96->lock);
2174 	return change;
2175 }
2176 
2177 static int snd_rme96_control_spdif_stream_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2178 {
2179 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2180 	uinfo->count = 1;
2181 	return 0;
2182 }
2183 
2184 static int snd_rme96_control_spdif_stream_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2185 {
2186 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2187 
2188 	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif_stream);
2189 	return 0;
2190 }
2191 
2192 static int snd_rme96_control_spdif_stream_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2193 {
2194 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2195 	int change;
2196 	u32 val;
2197 
2198 	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
2199 	spin_lock_irq(&rme96->lock);
2200 	change = val != rme96->wcreg_spdif_stream;
2201 	rme96->wcreg_spdif_stream = val;
2202 	rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
2203 	rme96->wcreg |= val;
2204 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
2205 	spin_unlock_irq(&rme96->lock);
2206 	return change;
2207 }
2208 
2209 static int snd_rme96_control_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2210 {
2211 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2212 	uinfo->count = 1;
2213 	return 0;
2214 }
2215 
2216 static int snd_rme96_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2217 {
2218 	ucontrol->value.iec958.status[0] = kcontrol->private_value;
2219 	return 0;
2220 }
2221 
2222 static int
2223 snd_rme96_dac_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2224 {
2225 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2226 
2227         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2228         uinfo->count = 2;
2229         uinfo->value.integer.min = 0;
2230 	uinfo->value.integer.max = RME96_185X_MAX_OUT(rme96);
2231         return 0;
2232 }
2233 
2234 static int
2235 snd_rme96_dac_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2236 {
2237 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2238 
2239 	spin_lock_irq(&rme96->lock);
2240         u->value.integer.value[0] = rme96->vol[0];
2241         u->value.integer.value[1] = rme96->vol[1];
2242 	spin_unlock_irq(&rme96->lock);
2243 
2244         return 0;
2245 }
2246 
2247 static int
2248 snd_rme96_dac_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2249 {
2250 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2251         int change = 0;
2252 	unsigned int vol, maxvol;
2253 
2254 
2255 	if (!RME96_HAS_ANALOG_OUT(rme96))
2256 		return -EINVAL;
2257 	maxvol = RME96_185X_MAX_OUT(rme96);
2258 	spin_lock_irq(&rme96->lock);
2259 	vol = u->value.integer.value[0];
2260 	if (vol != rme96->vol[0] && vol <= maxvol) {
2261 		rme96->vol[0] = vol;
2262 		change = 1;
2263 	}
2264 	vol = u->value.integer.value[1];
2265 	if (vol != rme96->vol[1] && vol <= maxvol) {
2266 		rme96->vol[1] = vol;
2267 		change = 1;
2268 	}
2269 	if (change)
2270 		snd_rme96_apply_dac_volume(rme96);
2271 	spin_unlock_irq(&rme96->lock);
2272 
2273         return change;
2274 }
2275 
2276 static struct snd_kcontrol_new snd_rme96_controls[] = {
2277 {
2278 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2279 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
2280 	.info =		snd_rme96_control_spdif_info,
2281 	.get =		snd_rme96_control_spdif_get,
2282 	.put =		snd_rme96_control_spdif_put
2283 },
2284 {
2285 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2286 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2287 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
2288 	.info =		snd_rme96_control_spdif_stream_info,
2289 	.get =		snd_rme96_control_spdif_stream_get,
2290 	.put =		snd_rme96_control_spdif_stream_put
2291 },
2292 {
2293 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2294 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2295 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
2296 	.info =		snd_rme96_control_spdif_mask_info,
2297 	.get =		snd_rme96_control_spdif_mask_get,
2298 	.private_value = IEC958_AES0_NONAUDIO |
2299 			IEC958_AES0_PROFESSIONAL |
2300 			IEC958_AES0_CON_EMPHASIS
2301 },
2302 {
2303 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2304 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2305 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
2306 	.info =		snd_rme96_control_spdif_mask_info,
2307 	.get =		snd_rme96_control_spdif_mask_get,
2308 	.private_value = IEC958_AES0_NONAUDIO |
2309 			IEC958_AES0_PROFESSIONAL |
2310 			IEC958_AES0_PRO_EMPHASIS
2311 },
2312 {
2313         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2314 	.name =         "Input Connector",
2315 	.info =         snd_rme96_info_inputtype_control,
2316 	.get =          snd_rme96_get_inputtype_control,
2317 	.put =          snd_rme96_put_inputtype_control
2318 },
2319 {
2320         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2321 	.name =         "Loopback Input",
2322 	.info =         snd_rme96_info_loopback_control,
2323 	.get =          snd_rme96_get_loopback_control,
2324 	.put =          snd_rme96_put_loopback_control
2325 },
2326 {
2327         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2328 	.name =         "Sample Clock Source",
2329 	.info =         snd_rme96_info_clockmode_control,
2330 	.get =          snd_rme96_get_clockmode_control,
2331 	.put =          snd_rme96_put_clockmode_control
2332 },
2333 {
2334         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2335 	.name =         "Monitor Tracks",
2336 	.info =         snd_rme96_info_montracks_control,
2337 	.get =          snd_rme96_get_montracks_control,
2338 	.put =          snd_rme96_put_montracks_control
2339 },
2340 {
2341         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2342 	.name =         "Attenuation",
2343 	.info =         snd_rme96_info_attenuation_control,
2344 	.get =          snd_rme96_get_attenuation_control,
2345 	.put =          snd_rme96_put_attenuation_control
2346 },
2347 {
2348         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2349 	.name =         "DAC Playback Volume",
2350 	.info =         snd_rme96_dac_volume_info,
2351 	.get =          snd_rme96_dac_volume_get,
2352 	.put =          snd_rme96_dac_volume_put
2353 }
2354 };
2355 
2356 static int
2357 snd_rme96_create_switches(struct snd_card *card,
2358 			  struct rme96 *rme96)
2359 {
2360 	int idx, err;
2361 	struct snd_kcontrol *kctl;
2362 
2363 	for (idx = 0; idx < 7; idx++) {
2364 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme96_controls[idx], rme96))) < 0)
2365 			return err;
2366 		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
2367 			rme96->spdif_ctl = kctl;
2368 	}
2369 
2370 	if (RME96_HAS_ANALOG_OUT(rme96)) {
2371 		for (idx = 7; idx < 10; idx++)
2372 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_rme96_controls[idx], rme96))) < 0)
2373 				return err;
2374 	}
2375 
2376 	return 0;
2377 }
2378 
2379 /*
2380  * Card initialisation
2381  */
2382 
2383 #ifdef CONFIG_PM_SLEEP
2384 
2385 static int rme96_suspend(struct device *dev)
2386 {
2387 	struct snd_card *card = dev_get_drvdata(dev);
2388 	struct rme96 *rme96 = card->private_data;
2389 
2390 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2391 	snd_pcm_suspend(rme96->playback_substream);
2392 	snd_pcm_suspend(rme96->capture_substream);
2393 
2394 	/* save capture & playback pointers */
2395 	rme96->playback_pointer = readl(rme96->iobase + RME96_IO_GET_PLAY_POS)
2396 				  & RME96_RCR_AUDIO_ADDR_MASK;
2397 	rme96->capture_pointer = readl(rme96->iobase + RME96_IO_GET_REC_POS)
2398 				 & RME96_RCR_AUDIO_ADDR_MASK;
2399 
2400 	/* save playback and capture buffers */
2401 	memcpy_fromio(rme96->playback_suspend_buffer,
2402 		      rme96->iobase + RME96_IO_PLAY_BUFFER, RME96_BUFFER_SIZE);
2403 	memcpy_fromio(rme96->capture_suspend_buffer,
2404 		      rme96->iobase + RME96_IO_REC_BUFFER, RME96_BUFFER_SIZE);
2405 
2406 	/* disable the DAC  */
2407 	rme96->areg &= ~RME96_AR_DAC_EN;
2408 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2409 	return 0;
2410 }
2411 
2412 static int rme96_resume(struct device *dev)
2413 {
2414 	struct snd_card *card = dev_get_drvdata(dev);
2415 	struct rme96 *rme96 = card->private_data;
2416 
2417 	/* reset playback and record buffer pointers */
2418 	writel(0, rme96->iobase + RME96_IO_SET_PLAY_POS
2419 		  + rme96->playback_pointer);
2420 	writel(0, rme96->iobase + RME96_IO_SET_REC_POS
2421 		  + rme96->capture_pointer);
2422 
2423 	/* restore playback and capture buffers */
2424 	memcpy_toio(rme96->iobase + RME96_IO_PLAY_BUFFER,
2425 		    rme96->playback_suspend_buffer, RME96_BUFFER_SIZE);
2426 	memcpy_toio(rme96->iobase + RME96_IO_REC_BUFFER,
2427 		    rme96->capture_suspend_buffer, RME96_BUFFER_SIZE);
2428 
2429 	/* reset the ADC */
2430 	writel(rme96->areg | RME96_AR_PD2,
2431 	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
2432 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2433 
2434 	/* reset and enable DAC, restore analog volume */
2435 	snd_rme96_reset_dac(rme96);
2436 	rme96->areg |= RME96_AR_DAC_EN;
2437 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2438 	if (RME96_HAS_ANALOG_OUT(rme96)) {
2439 		usleep_range(3000, 10000);
2440 		snd_rme96_apply_dac_volume(rme96);
2441 	}
2442 
2443 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2444 
2445 	return 0;
2446 }
2447 
2448 static SIMPLE_DEV_PM_OPS(rme96_pm, rme96_suspend, rme96_resume);
2449 #define RME96_PM_OPS	&rme96_pm
2450 #else
2451 #define RME96_PM_OPS	NULL
2452 #endif /* CONFIG_PM_SLEEP */
2453 
2454 static void snd_rme96_card_free(struct snd_card *card)
2455 {
2456 	snd_rme96_free(card->private_data);
2457 }
2458 
2459 static int
2460 snd_rme96_probe(struct pci_dev *pci,
2461 		const struct pci_device_id *pci_id)
2462 {
2463 	static int dev;
2464 	struct rme96 *rme96;
2465 	struct snd_card *card;
2466 	int err;
2467 	u8 val;
2468 
2469 	if (dev >= SNDRV_CARDS) {
2470 		return -ENODEV;
2471 	}
2472 	if (!enable[dev]) {
2473 		dev++;
2474 		return -ENOENT;
2475 	}
2476 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2477 			   sizeof(struct rme96), &card);
2478 	if (err < 0)
2479 		return err;
2480 	card->private_free = snd_rme96_card_free;
2481 	rme96 = card->private_data;
2482 	rme96->card = card;
2483 	rme96->pci = pci;
2484 	err = snd_rme96_create(rme96);
2485 	if (err)
2486 		goto free_card;
2487 
2488 #ifdef CONFIG_PM_SLEEP
2489 	rme96->playback_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2490 	if (!rme96->playback_suspend_buffer) {
2491 		err = -ENOMEM;
2492 		goto free_card;
2493 	}
2494 	rme96->capture_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2495 	if (!rme96->capture_suspend_buffer) {
2496 		err = -ENOMEM;
2497 		goto free_card;
2498 	}
2499 #endif
2500 
2501 	strcpy(card->driver, "Digi96");
2502 	switch (rme96->pci->device) {
2503 	case PCI_DEVICE_ID_RME_DIGI96:
2504 		strcpy(card->shortname, "RME Digi96");
2505 		break;
2506 	case PCI_DEVICE_ID_RME_DIGI96_8:
2507 		strcpy(card->shortname, "RME Digi96/8");
2508 		break;
2509 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
2510 		strcpy(card->shortname, "RME Digi96/8 PRO");
2511 		break;
2512 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
2513 		pci_read_config_byte(rme96->pci, 8, &val);
2514 		if (val < 5) {
2515 			strcpy(card->shortname, "RME Digi96/8 PAD");
2516 		} else {
2517 			strcpy(card->shortname, "RME Digi96/8 PST");
2518 		}
2519 		break;
2520 	}
2521 	sprintf(card->longname, "%s at 0x%lx, irq %d", card->shortname,
2522 		rme96->port, rme96->irq);
2523 	err = snd_card_register(card);
2524 	if (err)
2525 		goto free_card;
2526 
2527 	pci_set_drvdata(pci, card);
2528 	dev++;
2529 	return 0;
2530 free_card:
2531 	snd_card_free(card);
2532 	return err;
2533 }
2534 
2535 static void snd_rme96_remove(struct pci_dev *pci)
2536 {
2537 	snd_card_free(pci_get_drvdata(pci));
2538 }
2539 
2540 static struct pci_driver rme96_driver = {
2541 	.name = KBUILD_MODNAME,
2542 	.id_table = snd_rme96_ids,
2543 	.probe = snd_rme96_probe,
2544 	.remove = snd_rme96_remove,
2545 	.driver = {
2546 		.pm = RME96_PM_OPS,
2547 	},
2548 };
2549 
2550 module_pci_driver(rme96_driver);
2551