xref: /openbmc/linux/sound/pci/rme96.c (revision 5b448065)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *   ALSA driver for RME Digi96, Digi96/8 and Digi96/8 PRO/PAD/PST audio
4  *   interfaces
5  *
6  *	Copyright (c) 2000, 2001 Anders Torger <torger@ludd.luth.se>
7  *
8  *      Thanks to Henk Hesselink <henk@anda.nl> for the analog volume control
9  *      code.
10  */
11 
12 #include <linux/delay.h>
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <linux/pci.h>
16 #include <linux/module.h>
17 #include <linux/vmalloc.h>
18 #include <linux/io.h>
19 
20 #include <sound/core.h>
21 #include <sound/info.h>
22 #include <sound/control.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/asoundef.h>
26 #include <sound/initval.h>
27 
28 /* note, two last pcis should be equal, it is not a bug */
29 
30 MODULE_AUTHOR("Anders Torger <torger@ludd.luth.se>");
31 MODULE_DESCRIPTION("RME Digi96, Digi96/8, Digi96/8 PRO, Digi96/8 PST, "
32 		   "Digi96/8 PAD");
33 MODULE_LICENSE("GPL");
34 
35 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
36 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
37 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
38 
39 module_param_array(index, int, NULL, 0444);
40 MODULE_PARM_DESC(index, "Index value for RME Digi96 soundcard.");
41 module_param_array(id, charp, NULL, 0444);
42 MODULE_PARM_DESC(id, "ID string for RME Digi96 soundcard.");
43 module_param_array(enable, bool, NULL, 0444);
44 MODULE_PARM_DESC(enable, "Enable RME Digi96 soundcard.");
45 
46 /*
47  * Defines for RME Digi96 series, from internal RME reference documents
48  * dated 12.01.00
49  */
50 
51 #define RME96_SPDIF_NCHANNELS 2
52 
53 /* Playback and capture buffer size */
54 #define RME96_BUFFER_SIZE 0x10000
55 
56 /* IO area size */
57 #define RME96_IO_SIZE 0x60000
58 
59 /* IO area offsets */
60 #define RME96_IO_PLAY_BUFFER      0x0
61 #define RME96_IO_REC_BUFFER       0x10000
62 #define RME96_IO_CONTROL_REGISTER 0x20000
63 #define RME96_IO_ADDITIONAL_REG   0x20004
64 #define RME96_IO_CONFIRM_PLAY_IRQ 0x20008
65 #define RME96_IO_CONFIRM_REC_IRQ  0x2000C
66 #define RME96_IO_SET_PLAY_POS     0x40000
67 #define RME96_IO_RESET_PLAY_POS   0x4FFFC
68 #define RME96_IO_SET_REC_POS      0x50000
69 #define RME96_IO_RESET_REC_POS    0x5FFFC
70 #define RME96_IO_GET_PLAY_POS     0x20000
71 #define RME96_IO_GET_REC_POS      0x30000
72 
73 /* Write control register bits */
74 #define RME96_WCR_START     (1 << 0)
75 #define RME96_WCR_START_2   (1 << 1)
76 #define RME96_WCR_GAIN_0    (1 << 2)
77 #define RME96_WCR_GAIN_1    (1 << 3)
78 #define RME96_WCR_MODE24    (1 << 4)
79 #define RME96_WCR_MODE24_2  (1 << 5)
80 #define RME96_WCR_BM        (1 << 6)
81 #define RME96_WCR_BM_2      (1 << 7)
82 #define RME96_WCR_ADAT      (1 << 8)
83 #define RME96_WCR_FREQ_0    (1 << 9)
84 #define RME96_WCR_FREQ_1    (1 << 10)
85 #define RME96_WCR_DS        (1 << 11)
86 #define RME96_WCR_PRO       (1 << 12)
87 #define RME96_WCR_EMP       (1 << 13)
88 #define RME96_WCR_SEL       (1 << 14)
89 #define RME96_WCR_MASTER    (1 << 15)
90 #define RME96_WCR_PD        (1 << 16)
91 #define RME96_WCR_INP_0     (1 << 17)
92 #define RME96_WCR_INP_1     (1 << 18)
93 #define RME96_WCR_THRU_0    (1 << 19)
94 #define RME96_WCR_THRU_1    (1 << 20)
95 #define RME96_WCR_THRU_2    (1 << 21)
96 #define RME96_WCR_THRU_3    (1 << 22)
97 #define RME96_WCR_THRU_4    (1 << 23)
98 #define RME96_WCR_THRU_5    (1 << 24)
99 #define RME96_WCR_THRU_6    (1 << 25)
100 #define RME96_WCR_THRU_7    (1 << 26)
101 #define RME96_WCR_DOLBY     (1 << 27)
102 #define RME96_WCR_MONITOR_0 (1 << 28)
103 #define RME96_WCR_MONITOR_1 (1 << 29)
104 #define RME96_WCR_ISEL      (1 << 30)
105 #define RME96_WCR_IDIS      (1 << 31)
106 
107 #define RME96_WCR_BITPOS_GAIN_0 2
108 #define RME96_WCR_BITPOS_GAIN_1 3
109 #define RME96_WCR_BITPOS_FREQ_0 9
110 #define RME96_WCR_BITPOS_FREQ_1 10
111 #define RME96_WCR_BITPOS_INP_0 17
112 #define RME96_WCR_BITPOS_INP_1 18
113 #define RME96_WCR_BITPOS_MONITOR_0 28
114 #define RME96_WCR_BITPOS_MONITOR_1 29
115 
116 /* Read control register bits */
117 #define RME96_RCR_AUDIO_ADDR_MASK 0xFFFF
118 #define RME96_RCR_IRQ_2     (1 << 16)
119 #define RME96_RCR_T_OUT     (1 << 17)
120 #define RME96_RCR_DEV_ID_0  (1 << 21)
121 #define RME96_RCR_DEV_ID_1  (1 << 22)
122 #define RME96_RCR_LOCK      (1 << 23)
123 #define RME96_RCR_VERF      (1 << 26)
124 #define RME96_RCR_F0        (1 << 27)
125 #define RME96_RCR_F1        (1 << 28)
126 #define RME96_RCR_F2        (1 << 29)
127 #define RME96_RCR_AUTOSYNC  (1 << 30)
128 #define RME96_RCR_IRQ       (1 << 31)
129 
130 #define RME96_RCR_BITPOS_F0 27
131 #define RME96_RCR_BITPOS_F1 28
132 #define RME96_RCR_BITPOS_F2 29
133 
134 /* Additional register bits */
135 #define RME96_AR_WSEL       (1 << 0)
136 #define RME96_AR_ANALOG     (1 << 1)
137 #define RME96_AR_FREQPAD_0  (1 << 2)
138 #define RME96_AR_FREQPAD_1  (1 << 3)
139 #define RME96_AR_FREQPAD_2  (1 << 4)
140 #define RME96_AR_PD2        (1 << 5)
141 #define RME96_AR_DAC_EN     (1 << 6)
142 #define RME96_AR_CLATCH     (1 << 7)
143 #define RME96_AR_CCLK       (1 << 8)
144 #define RME96_AR_CDATA      (1 << 9)
145 
146 #define RME96_AR_BITPOS_F0 2
147 #define RME96_AR_BITPOS_F1 3
148 #define RME96_AR_BITPOS_F2 4
149 
150 /* Monitor tracks */
151 #define RME96_MONITOR_TRACKS_1_2 0
152 #define RME96_MONITOR_TRACKS_3_4 1
153 #define RME96_MONITOR_TRACKS_5_6 2
154 #define RME96_MONITOR_TRACKS_7_8 3
155 
156 /* Attenuation */
157 #define RME96_ATTENUATION_0 0
158 #define RME96_ATTENUATION_6 1
159 #define RME96_ATTENUATION_12 2
160 #define RME96_ATTENUATION_18 3
161 
162 /* Input types */
163 #define RME96_INPUT_OPTICAL 0
164 #define RME96_INPUT_COAXIAL 1
165 #define RME96_INPUT_INTERNAL 2
166 #define RME96_INPUT_XLR 3
167 #define RME96_INPUT_ANALOG 4
168 
169 /* Clock modes */
170 #define RME96_CLOCKMODE_SLAVE 0
171 #define RME96_CLOCKMODE_MASTER 1
172 #define RME96_CLOCKMODE_WORDCLOCK 2
173 
174 /* Block sizes in bytes */
175 #define RME96_SMALL_BLOCK_SIZE 2048
176 #define RME96_LARGE_BLOCK_SIZE 8192
177 
178 /* Volume control */
179 #define RME96_AD1852_VOL_BITS 14
180 #define RME96_AD1855_VOL_BITS 10
181 
182 /* Defines for snd_rme96_trigger */
183 #define RME96_TB_START_PLAYBACK 1
184 #define RME96_TB_START_CAPTURE 2
185 #define RME96_TB_STOP_PLAYBACK 4
186 #define RME96_TB_STOP_CAPTURE 8
187 #define RME96_TB_RESET_PLAYPOS 16
188 #define RME96_TB_RESET_CAPTUREPOS 32
189 #define RME96_TB_CLEAR_PLAYBACK_IRQ 64
190 #define RME96_TB_CLEAR_CAPTURE_IRQ 128
191 #define RME96_RESUME_PLAYBACK	(RME96_TB_START_PLAYBACK)
192 #define RME96_RESUME_CAPTURE	(RME96_TB_START_CAPTURE)
193 #define RME96_RESUME_BOTH	(RME96_RESUME_PLAYBACK \
194 				| RME96_RESUME_CAPTURE)
195 #define RME96_START_PLAYBACK	(RME96_TB_START_PLAYBACK \
196 				| RME96_TB_RESET_PLAYPOS)
197 #define RME96_START_CAPTURE	(RME96_TB_START_CAPTURE \
198 				| RME96_TB_RESET_CAPTUREPOS)
199 #define RME96_START_BOTH	(RME96_START_PLAYBACK \
200 				| RME96_START_CAPTURE)
201 #define RME96_STOP_PLAYBACK	(RME96_TB_STOP_PLAYBACK \
202 				| RME96_TB_CLEAR_PLAYBACK_IRQ)
203 #define RME96_STOP_CAPTURE	(RME96_TB_STOP_CAPTURE \
204 				| RME96_TB_CLEAR_CAPTURE_IRQ)
205 #define RME96_STOP_BOTH		(RME96_STOP_PLAYBACK \
206 				| RME96_STOP_CAPTURE)
207 
208 struct rme96 {
209 	spinlock_t    lock;
210 	int irq;
211 	unsigned long port;
212 	void __iomem *iobase;
213 
214 	u32 wcreg;    /* cached write control register value */
215 	u32 wcreg_spdif;		/* S/PDIF setup */
216 	u32 wcreg_spdif_stream;		/* S/PDIF setup (temporary) */
217 	u32 rcreg;    /* cached read control register value */
218 	u32 areg;     /* cached additional register value */
219 	u16 vol[2]; /* cached volume of analog output */
220 
221 	u8 rev; /* card revision number */
222 
223 #ifdef CONFIG_PM_SLEEP
224 	u32 playback_pointer;
225 	u32 capture_pointer;
226 	void *playback_suspend_buffer;
227 	void *capture_suspend_buffer;
228 #endif
229 
230 	struct snd_pcm_substream *playback_substream;
231 	struct snd_pcm_substream *capture_substream;
232 
233 	int playback_frlog; /* log2 of framesize */
234 	int capture_frlog;
235 
236         size_t playback_periodsize; /* in bytes, zero if not used */
237 	size_t capture_periodsize; /* in bytes, zero if not used */
238 
239 	struct snd_card *card;
240 	struct snd_pcm *spdif_pcm;
241 	struct snd_pcm *adat_pcm;
242 	struct pci_dev     *pci;
243 	struct snd_kcontrol   *spdif_ctl;
244 };
245 
246 static const struct pci_device_id snd_rme96_ids[] = {
247 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96), 0, },
248 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8), 0, },
249 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PRO), 0, },
250 	{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST), 0, },
251 	{ 0, }
252 };
253 
254 MODULE_DEVICE_TABLE(pci, snd_rme96_ids);
255 
256 #define RME96_ISPLAYING(rme96) ((rme96)->wcreg & RME96_WCR_START)
257 #define RME96_ISRECORDING(rme96) ((rme96)->wcreg & RME96_WCR_START_2)
258 #define	RME96_HAS_ANALOG_IN(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)
259 #define	RME96_HAS_ANALOG_OUT(rme96) ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO || \
260 				     (rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST)
261 #define	RME96_DAC_IS_1852(rme96) (RME96_HAS_ANALOG_OUT(rme96) && (rme96)->rev >= 4)
262 #define	RME96_DAC_IS_1855(rme96) (((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && (rme96)->rev < 4) || \
263 			          ((rme96)->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PRO && (rme96)->rev == 2))
264 #define	RME96_185X_MAX_OUT(rme96) ((1 << (RME96_DAC_IS_1852(rme96) ? RME96_AD1852_VOL_BITS : RME96_AD1855_VOL_BITS)) - 1)
265 
266 static int
267 snd_rme96_playback_prepare(struct snd_pcm_substream *substream);
268 
269 static int
270 snd_rme96_capture_prepare(struct snd_pcm_substream *substream);
271 
272 static int
273 snd_rme96_playback_trigger(struct snd_pcm_substream *substream,
274 			   int cmd);
275 
276 static int
277 snd_rme96_capture_trigger(struct snd_pcm_substream *substream,
278 			  int cmd);
279 
280 static snd_pcm_uframes_t
281 snd_rme96_playback_pointer(struct snd_pcm_substream *substream);
282 
283 static snd_pcm_uframes_t
284 snd_rme96_capture_pointer(struct snd_pcm_substream *substream);
285 
286 static void snd_rme96_proc_init(struct rme96 *rme96);
287 
288 static int
289 snd_rme96_create_switches(struct snd_card *card,
290 			  struct rme96 *rme96);
291 
292 static int
293 snd_rme96_getinputtype(struct rme96 *rme96);
294 
295 static inline unsigned int
296 snd_rme96_playback_ptr(struct rme96 *rme96)
297 {
298 	return (readl(rme96->iobase + RME96_IO_GET_PLAY_POS)
299 		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->playback_frlog;
300 }
301 
302 static inline unsigned int
303 snd_rme96_capture_ptr(struct rme96 *rme96)
304 {
305 	return (readl(rme96->iobase + RME96_IO_GET_REC_POS)
306 		& RME96_RCR_AUDIO_ADDR_MASK) >> rme96->capture_frlog;
307 }
308 
309 static int
310 snd_rme96_playback_silence(struct snd_pcm_substream *substream,
311 			   int channel, unsigned long pos, unsigned long count)
312 {
313 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
314 
315 	memset_io(rme96->iobase + RME96_IO_PLAY_BUFFER + pos,
316 		  0, count);
317 	return 0;
318 }
319 
320 static int
321 snd_rme96_playback_copy(struct snd_pcm_substream *substream,
322 			int channel, unsigned long pos,
323 			void __user *src, unsigned long count)
324 {
325 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
326 
327 	return copy_from_user_toio(rme96->iobase + RME96_IO_PLAY_BUFFER + pos,
328 				   src, count);
329 }
330 
331 static int
332 snd_rme96_playback_copy_kernel(struct snd_pcm_substream *substream,
333 			       int channel, unsigned long pos,
334 			       void *src, unsigned long count)
335 {
336 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
337 
338 	memcpy_toio(rme96->iobase + RME96_IO_PLAY_BUFFER + pos, src, count);
339 	return 0;
340 }
341 
342 static int
343 snd_rme96_capture_copy(struct snd_pcm_substream *substream,
344 		       int channel, unsigned long pos,
345 		       void __user *dst, unsigned long count)
346 {
347 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
348 
349 	return copy_to_user_fromio(dst,
350 				   rme96->iobase + RME96_IO_REC_BUFFER + pos,
351 				   count);
352 }
353 
354 static int
355 snd_rme96_capture_copy_kernel(struct snd_pcm_substream *substream,
356 			      int channel, unsigned long pos,
357 			      void *dst, unsigned long count)
358 {
359 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
360 
361 	memcpy_fromio(dst, rme96->iobase + RME96_IO_REC_BUFFER + pos, count);
362 	return 0;
363 }
364 
365 /*
366  * Digital output capabilities (S/PDIF)
367  */
368 static const struct snd_pcm_hardware snd_rme96_playback_spdif_info =
369 {
370 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
371 			      SNDRV_PCM_INFO_MMAP_VALID |
372 			      SNDRV_PCM_INFO_SYNC_START |
373 			      SNDRV_PCM_INFO_RESUME |
374 			      SNDRV_PCM_INFO_INTERLEAVED |
375 			      SNDRV_PCM_INFO_PAUSE),
376 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
377 			      SNDRV_PCM_FMTBIT_S32_LE),
378 	.rates =	     (SNDRV_PCM_RATE_32000 |
379 			      SNDRV_PCM_RATE_44100 |
380 			      SNDRV_PCM_RATE_48000 |
381 			      SNDRV_PCM_RATE_64000 |
382 			      SNDRV_PCM_RATE_88200 |
383 			      SNDRV_PCM_RATE_96000),
384 	.rate_min =	     32000,
385 	.rate_max =	     96000,
386 	.channels_min =	     2,
387 	.channels_max =	     2,
388 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
389 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
390 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
391 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
392 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
393 	.fifo_size =	     0,
394 };
395 
396 /*
397  * Digital input capabilities (S/PDIF)
398  */
399 static const struct snd_pcm_hardware snd_rme96_capture_spdif_info =
400 {
401 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
402 			      SNDRV_PCM_INFO_MMAP_VALID |
403 			      SNDRV_PCM_INFO_SYNC_START |
404 			      SNDRV_PCM_INFO_RESUME |
405 			      SNDRV_PCM_INFO_INTERLEAVED |
406 			      SNDRV_PCM_INFO_PAUSE),
407 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
408 			      SNDRV_PCM_FMTBIT_S32_LE),
409 	.rates =	     (SNDRV_PCM_RATE_32000 |
410 			      SNDRV_PCM_RATE_44100 |
411 			      SNDRV_PCM_RATE_48000 |
412 			      SNDRV_PCM_RATE_64000 |
413 			      SNDRV_PCM_RATE_88200 |
414 			      SNDRV_PCM_RATE_96000),
415 	.rate_min =	     32000,
416 	.rate_max =	     96000,
417 	.channels_min =	     2,
418 	.channels_max =	     2,
419 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
420 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
421 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
422 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
423 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
424 	.fifo_size =	     0,
425 };
426 
427 /*
428  * Digital output capabilities (ADAT)
429  */
430 static const struct snd_pcm_hardware snd_rme96_playback_adat_info =
431 {
432 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
433 			      SNDRV_PCM_INFO_MMAP_VALID |
434 			      SNDRV_PCM_INFO_SYNC_START |
435 			      SNDRV_PCM_INFO_RESUME |
436 			      SNDRV_PCM_INFO_INTERLEAVED |
437 			      SNDRV_PCM_INFO_PAUSE),
438 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
439 			      SNDRV_PCM_FMTBIT_S32_LE),
440 	.rates =             (SNDRV_PCM_RATE_44100 |
441 			      SNDRV_PCM_RATE_48000),
442 	.rate_min =          44100,
443 	.rate_max =          48000,
444 	.channels_min =      8,
445 	.channels_max =	     8,
446 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
447 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
448 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
449 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
450 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
451 	.fifo_size =	     0,
452 };
453 
454 /*
455  * Digital input capabilities (ADAT)
456  */
457 static const struct snd_pcm_hardware snd_rme96_capture_adat_info =
458 {
459 	.info =		     (SNDRV_PCM_INFO_MMAP_IOMEM |
460 			      SNDRV_PCM_INFO_MMAP_VALID |
461 			      SNDRV_PCM_INFO_SYNC_START |
462 			      SNDRV_PCM_INFO_RESUME |
463 			      SNDRV_PCM_INFO_INTERLEAVED |
464 			      SNDRV_PCM_INFO_PAUSE),
465 	.formats =	     (SNDRV_PCM_FMTBIT_S16_LE |
466 			      SNDRV_PCM_FMTBIT_S32_LE),
467 	.rates =	     (SNDRV_PCM_RATE_44100 |
468 			      SNDRV_PCM_RATE_48000),
469 	.rate_min =          44100,
470 	.rate_max =          48000,
471 	.channels_min =      8,
472 	.channels_max =	     8,
473 	.buffer_bytes_max =  RME96_BUFFER_SIZE,
474 	.period_bytes_min =  RME96_SMALL_BLOCK_SIZE,
475 	.period_bytes_max =  RME96_LARGE_BLOCK_SIZE,
476 	.periods_min =	     RME96_BUFFER_SIZE / RME96_LARGE_BLOCK_SIZE,
477 	.periods_max =	     RME96_BUFFER_SIZE / RME96_SMALL_BLOCK_SIZE,
478 	.fifo_size =         0,
479 };
480 
481 /*
482  * The CDATA, CCLK and CLATCH bits can be used to write to the SPI interface
483  * of the AD1852 or AD1852 D/A converter on the board.  CDATA must be set up
484  * on the falling edge of CCLK and be stable on the rising edge.  The rising
485  * edge of CLATCH after the last data bit clocks in the whole data word.
486  * A fast processor could probably drive the SPI interface faster than the
487  * DAC can handle (3MHz for the 1855, unknown for the 1852).  The udelay(1)
488  * limits the data rate to 500KHz and only causes a delay of 33 microsecs.
489  *
490  * NOTE: increased delay from 1 to 10, since there where problems setting
491  * the volume.
492  */
493 static void
494 snd_rme96_write_SPI(struct rme96 *rme96, u16 val)
495 {
496 	int i;
497 
498 	for (i = 0; i < 16; i++) {
499 		if (val & 0x8000) {
500 			rme96->areg |= RME96_AR_CDATA;
501 		} else {
502 			rme96->areg &= ~RME96_AR_CDATA;
503 		}
504 		rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CLATCH);
505 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
506 		udelay(10);
507 		rme96->areg |= RME96_AR_CCLK;
508 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
509 		udelay(10);
510 		val <<= 1;
511 	}
512 	rme96->areg &= ~(RME96_AR_CCLK | RME96_AR_CDATA);
513 	rme96->areg |= RME96_AR_CLATCH;
514 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
515 	udelay(10);
516 	rme96->areg &= ~RME96_AR_CLATCH;
517 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
518 }
519 
520 static void
521 snd_rme96_apply_dac_volume(struct rme96 *rme96)
522 {
523 	if (RME96_DAC_IS_1852(rme96)) {
524 		snd_rme96_write_SPI(rme96, (rme96->vol[0] << 2) | 0x0);
525 		snd_rme96_write_SPI(rme96, (rme96->vol[1] << 2) | 0x2);
526 	} else if (RME96_DAC_IS_1855(rme96)) {
527 		snd_rme96_write_SPI(rme96, (rme96->vol[0] & 0x3FF) | 0x000);
528 		snd_rme96_write_SPI(rme96, (rme96->vol[1] & 0x3FF) | 0x400);
529 	}
530 }
531 
532 static void
533 snd_rme96_reset_dac(struct rme96 *rme96)
534 {
535 	writel(rme96->wcreg | RME96_WCR_PD,
536 	       rme96->iobase + RME96_IO_CONTROL_REGISTER);
537 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
538 }
539 
540 static int
541 snd_rme96_getmontracks(struct rme96 *rme96)
542 {
543 	return ((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_0) & 1) +
544 		(((rme96->wcreg >> RME96_WCR_BITPOS_MONITOR_1) & 1) << 1);
545 }
546 
547 static int
548 snd_rme96_setmontracks(struct rme96 *rme96,
549 		       int montracks)
550 {
551 	if (montracks & 1) {
552 		rme96->wcreg |= RME96_WCR_MONITOR_0;
553 	} else {
554 		rme96->wcreg &= ~RME96_WCR_MONITOR_0;
555 	}
556 	if (montracks & 2) {
557 		rme96->wcreg |= RME96_WCR_MONITOR_1;
558 	} else {
559 		rme96->wcreg &= ~RME96_WCR_MONITOR_1;
560 	}
561 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
562 	return 0;
563 }
564 
565 static int
566 snd_rme96_getattenuation(struct rme96 *rme96)
567 {
568 	return ((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_0) & 1) +
569 		(((rme96->wcreg >> RME96_WCR_BITPOS_GAIN_1) & 1) << 1);
570 }
571 
572 static int
573 snd_rme96_setattenuation(struct rme96 *rme96,
574 			 int attenuation)
575 {
576 	switch (attenuation) {
577 	case 0:
578 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) &
579 			~RME96_WCR_GAIN_1;
580 		break;
581 	case 1:
582 		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) &
583 			~RME96_WCR_GAIN_1;
584 		break;
585 	case 2:
586 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_GAIN_0) |
587 			RME96_WCR_GAIN_1;
588 		break;
589 	case 3:
590 		rme96->wcreg = (rme96->wcreg | RME96_WCR_GAIN_0) |
591 			RME96_WCR_GAIN_1;
592 		break;
593 	default:
594 		return -EINVAL;
595 	}
596 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
597 	return 0;
598 }
599 
600 static int
601 snd_rme96_capture_getrate(struct rme96 *rme96,
602 			  int *is_adat)
603 {
604 	int n, rate;
605 
606 	*is_adat = 0;
607 	if (rme96->areg & RME96_AR_ANALOG) {
608 		/* Analog input, overrides S/PDIF setting */
609 		n = ((rme96->areg >> RME96_AR_BITPOS_F0) & 1) +
610 			(((rme96->areg >> RME96_AR_BITPOS_F1) & 1) << 1);
611 		switch (n) {
612 		case 1:
613 			rate = 32000;
614 			break;
615 		case 2:
616 			rate = 44100;
617 			break;
618 		case 3:
619 			rate = 48000;
620 			break;
621 		default:
622 			return -1;
623 		}
624 		return (rme96->areg & RME96_AR_BITPOS_F2) ? rate << 1 : rate;
625 	}
626 
627 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
628 	if (rme96->rcreg & RME96_RCR_LOCK) {
629 		/* ADAT rate */
630 		*is_adat = 1;
631 		if (rme96->rcreg & RME96_RCR_T_OUT) {
632 			return 48000;
633 		}
634 		return 44100;
635 	}
636 
637 	if (rme96->rcreg & RME96_RCR_VERF) {
638 		return -1;
639 	}
640 
641 	/* S/PDIF rate */
642 	n = ((rme96->rcreg >> RME96_RCR_BITPOS_F0) & 1) +
643 		(((rme96->rcreg >> RME96_RCR_BITPOS_F1) & 1) << 1) +
644 		(((rme96->rcreg >> RME96_RCR_BITPOS_F2) & 1) << 2);
645 
646 	switch (n) {
647 	case 0:
648 		if (rme96->rcreg & RME96_RCR_T_OUT) {
649 			return 64000;
650 		}
651 		return -1;
652 	case 3: return 96000;
653 	case 4: return 88200;
654 	case 5: return 48000;
655 	case 6: return 44100;
656 	case 7: return 32000;
657 	default:
658 		break;
659 	}
660 	return -1;
661 }
662 
663 static int
664 snd_rme96_playback_getrate(struct rme96 *rme96)
665 {
666 	int rate, dummy;
667 
668 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
669             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
670 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
671 	{
672 	        /* slave clock */
673 	        return rate;
674 	}
675 	rate = ((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_0) & 1) +
676 		(((rme96->wcreg >> RME96_WCR_BITPOS_FREQ_1) & 1) << 1);
677 	switch (rate) {
678 	case 1:
679 		rate = 32000;
680 		break;
681 	case 2:
682 		rate = 44100;
683 		break;
684 	case 3:
685 		rate = 48000;
686 		break;
687 	default:
688 		return -1;
689 	}
690 	return (rme96->wcreg & RME96_WCR_DS) ? rate << 1 : rate;
691 }
692 
693 static int
694 snd_rme96_playback_setrate(struct rme96 *rme96,
695 			   int rate)
696 {
697 	int ds;
698 
699 	ds = rme96->wcreg & RME96_WCR_DS;
700 	switch (rate) {
701 	case 32000:
702 		rme96->wcreg &= ~RME96_WCR_DS;
703 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
704 			~RME96_WCR_FREQ_1;
705 		break;
706 	case 44100:
707 		rme96->wcreg &= ~RME96_WCR_DS;
708 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
709 			~RME96_WCR_FREQ_0;
710 		break;
711 	case 48000:
712 		rme96->wcreg &= ~RME96_WCR_DS;
713 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
714 			RME96_WCR_FREQ_1;
715 		break;
716 	case 64000:
717 		rme96->wcreg |= RME96_WCR_DS;
718 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) &
719 			~RME96_WCR_FREQ_1;
720 		break;
721 	case 88200:
722 		rme96->wcreg |= RME96_WCR_DS;
723 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_1) &
724 			~RME96_WCR_FREQ_0;
725 		break;
726 	case 96000:
727 		rme96->wcreg |= RME96_WCR_DS;
728 		rme96->wcreg = (rme96->wcreg | RME96_WCR_FREQ_0) |
729 			RME96_WCR_FREQ_1;
730 		break;
731 	default:
732 		return -EINVAL;
733 	}
734 	if ((!ds && rme96->wcreg & RME96_WCR_DS) ||
735 	    (ds && !(rme96->wcreg & RME96_WCR_DS)))
736 	{
737 		/* change to/from double-speed: reset the DAC (if available) */
738 		snd_rme96_reset_dac(rme96);
739 		return 1; /* need to restore volume */
740 	} else {
741 		writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
742 		return 0;
743 	}
744 }
745 
746 static int
747 snd_rme96_capture_analog_setrate(struct rme96 *rme96,
748 				 int rate)
749 {
750 	switch (rate) {
751 	case 32000:
752 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
753 			       ~RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
754 		break;
755 	case 44100:
756 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
757 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
758 		break;
759 	case 48000:
760 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
761 			       RME96_AR_FREQPAD_1) & ~RME96_AR_FREQPAD_2;
762 		break;
763 	case 64000:
764 		if (rme96->rev < 4) {
765 			return -EINVAL;
766 		}
767 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) &
768 			       ~RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
769 		break;
770 	case 88200:
771 		if (rme96->rev < 4) {
772 			return -EINVAL;
773 		}
774 		rme96->areg = ((rme96->areg & ~RME96_AR_FREQPAD_0) |
775 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
776 		break;
777 	case 96000:
778 		rme96->areg = ((rme96->areg | RME96_AR_FREQPAD_0) |
779 			       RME96_AR_FREQPAD_1) | RME96_AR_FREQPAD_2;
780 		break;
781 	default:
782 		return -EINVAL;
783 	}
784 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
785 	return 0;
786 }
787 
788 static int
789 snd_rme96_setclockmode(struct rme96 *rme96,
790 		       int mode)
791 {
792 	switch (mode) {
793 	case RME96_CLOCKMODE_SLAVE:
794 	        /* AutoSync */
795 		rme96->wcreg &= ~RME96_WCR_MASTER;
796 		rme96->areg &= ~RME96_AR_WSEL;
797 		break;
798 	case RME96_CLOCKMODE_MASTER:
799 	        /* Internal */
800 		rme96->wcreg |= RME96_WCR_MASTER;
801 		rme96->areg &= ~RME96_AR_WSEL;
802 		break;
803 	case RME96_CLOCKMODE_WORDCLOCK:
804 		/* Word clock is a master mode */
805 		rme96->wcreg |= RME96_WCR_MASTER;
806 		rme96->areg |= RME96_AR_WSEL;
807 		break;
808 	default:
809 		return -EINVAL;
810 	}
811 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
812 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
813 	return 0;
814 }
815 
816 static int
817 snd_rme96_getclockmode(struct rme96 *rme96)
818 {
819 	if (rme96->areg & RME96_AR_WSEL) {
820 		return RME96_CLOCKMODE_WORDCLOCK;
821 	}
822 	return (rme96->wcreg & RME96_WCR_MASTER) ? RME96_CLOCKMODE_MASTER :
823 		RME96_CLOCKMODE_SLAVE;
824 }
825 
826 static int
827 snd_rme96_setinputtype(struct rme96 *rme96,
828 		       int type)
829 {
830 	int n;
831 
832 	switch (type) {
833 	case RME96_INPUT_OPTICAL:
834 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) &
835 			~RME96_WCR_INP_1;
836 		break;
837 	case RME96_INPUT_COAXIAL:
838 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) &
839 			~RME96_WCR_INP_1;
840 		break;
841 	case RME96_INPUT_INTERNAL:
842 		rme96->wcreg = (rme96->wcreg & ~RME96_WCR_INP_0) |
843 			RME96_WCR_INP_1;
844 		break;
845 	case RME96_INPUT_XLR:
846 		if ((rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
847 		     rme96->pci->device != PCI_DEVICE_ID_RME_DIGI96_8_PRO) ||
848 		    (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST &&
849 		     rme96->rev > 4))
850 		{
851 			/* Only Digi96/8 PRO and Digi96/8 PAD supports XLR */
852 			return -EINVAL;
853 		}
854 		rme96->wcreg = (rme96->wcreg | RME96_WCR_INP_0) |
855 			RME96_WCR_INP_1;
856 		break;
857 	case RME96_INPUT_ANALOG:
858 		if (!RME96_HAS_ANALOG_IN(rme96)) {
859 			return -EINVAL;
860 		}
861 		rme96->areg |= RME96_AR_ANALOG;
862 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
863 		if (rme96->rev < 4) {
864 			/*
865 			 * Revision less than 004 does not support 64 and
866 			 * 88.2 kHz
867 			 */
868 			if (snd_rme96_capture_getrate(rme96, &n) == 88200) {
869 				snd_rme96_capture_analog_setrate(rme96, 44100);
870 			}
871 			if (snd_rme96_capture_getrate(rme96, &n) == 64000) {
872 				snd_rme96_capture_analog_setrate(rme96, 32000);
873 			}
874 		}
875 		return 0;
876 	default:
877 		return -EINVAL;
878 	}
879 	if (type != RME96_INPUT_ANALOG && RME96_HAS_ANALOG_IN(rme96)) {
880 		rme96->areg &= ~RME96_AR_ANALOG;
881 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
882 	}
883 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
884 	return 0;
885 }
886 
887 static int
888 snd_rme96_getinputtype(struct rme96 *rme96)
889 {
890 	if (rme96->areg & RME96_AR_ANALOG) {
891 		return RME96_INPUT_ANALOG;
892 	}
893 	return ((rme96->wcreg >> RME96_WCR_BITPOS_INP_0) & 1) +
894 		(((rme96->wcreg >> RME96_WCR_BITPOS_INP_1) & 1) << 1);
895 }
896 
897 static void
898 snd_rme96_setframelog(struct rme96 *rme96,
899 		      int n_channels,
900 		      int is_playback)
901 {
902 	int frlog;
903 
904 	if (n_channels == 2) {
905 		frlog = 1;
906 	} else {
907 		/* assume 8 channels */
908 		frlog = 3;
909 	}
910 	if (is_playback) {
911 		frlog += (rme96->wcreg & RME96_WCR_MODE24) ? 2 : 1;
912 		rme96->playback_frlog = frlog;
913 	} else {
914 		frlog += (rme96->wcreg & RME96_WCR_MODE24_2) ? 2 : 1;
915 		rme96->capture_frlog = frlog;
916 	}
917 }
918 
919 static int
920 snd_rme96_playback_setformat(struct rme96 *rme96, snd_pcm_format_t format)
921 {
922 	switch (format) {
923 	case SNDRV_PCM_FORMAT_S16_LE:
924 		rme96->wcreg &= ~RME96_WCR_MODE24;
925 		break;
926 	case SNDRV_PCM_FORMAT_S32_LE:
927 		rme96->wcreg |= RME96_WCR_MODE24;
928 		break;
929 	default:
930 		return -EINVAL;
931 	}
932 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
933 	return 0;
934 }
935 
936 static int
937 snd_rme96_capture_setformat(struct rme96 *rme96, snd_pcm_format_t format)
938 {
939 	switch (format) {
940 	case SNDRV_PCM_FORMAT_S16_LE:
941 		rme96->wcreg &= ~RME96_WCR_MODE24_2;
942 		break;
943 	case SNDRV_PCM_FORMAT_S32_LE:
944 		rme96->wcreg |= RME96_WCR_MODE24_2;
945 		break;
946 	default:
947 		return -EINVAL;
948 	}
949 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
950 	return 0;
951 }
952 
953 static void
954 snd_rme96_set_period_properties(struct rme96 *rme96,
955 				size_t period_bytes)
956 {
957 	switch (period_bytes) {
958 	case RME96_LARGE_BLOCK_SIZE:
959 		rme96->wcreg &= ~RME96_WCR_ISEL;
960 		break;
961 	case RME96_SMALL_BLOCK_SIZE:
962 		rme96->wcreg |= RME96_WCR_ISEL;
963 		break;
964 	default:
965 		snd_BUG();
966 		break;
967 	}
968 	rme96->wcreg &= ~RME96_WCR_IDIS;
969 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
970 }
971 
972 static int
973 snd_rme96_playback_hw_params(struct snd_pcm_substream *substream,
974 			     struct snd_pcm_hw_params *params)
975 {
976 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
977 	struct snd_pcm_runtime *runtime = substream->runtime;
978 	int err, rate, dummy;
979 	bool apply_dac_volume = false;
980 
981 	runtime->dma_area = (void __force *)(rme96->iobase +
982 					     RME96_IO_PLAY_BUFFER);
983 	runtime->dma_addr = rme96->port + RME96_IO_PLAY_BUFFER;
984 	runtime->dma_bytes = RME96_BUFFER_SIZE;
985 
986 	spin_lock_irq(&rme96->lock);
987 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
988             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
989 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
990 	{
991                 /* slave clock */
992                 if ((int)params_rate(params) != rate) {
993 			err = -EIO;
994 			goto error;
995 		}
996 	} else {
997 		err = snd_rme96_playback_setrate(rme96, params_rate(params));
998 		if (err < 0)
999 			goto error;
1000 		apply_dac_volume = err > 0; /* need to restore volume later? */
1001 	}
1002 
1003 	err = snd_rme96_playback_setformat(rme96, params_format(params));
1004 	if (err < 0)
1005 		goto error;
1006 	snd_rme96_setframelog(rme96, params_channels(params), 1);
1007 	if (rme96->capture_periodsize != 0) {
1008 		if (params_period_size(params) << rme96->playback_frlog !=
1009 		    rme96->capture_periodsize)
1010 		{
1011 			err = -EBUSY;
1012 			goto error;
1013 		}
1014 	}
1015 	rme96->playback_periodsize =
1016 		params_period_size(params) << rme96->playback_frlog;
1017 	snd_rme96_set_period_properties(rme96, rme96->playback_periodsize);
1018 	/* S/PDIF setup */
1019 	if ((rme96->wcreg & RME96_WCR_ADAT) == 0) {
1020 		rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
1021 		writel(rme96->wcreg |= rme96->wcreg_spdif_stream, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1022 	}
1023 
1024 	err = 0;
1025  error:
1026 	spin_unlock_irq(&rme96->lock);
1027 	if (apply_dac_volume) {
1028 		usleep_range(3000, 10000);
1029 		snd_rme96_apply_dac_volume(rme96);
1030 	}
1031 
1032 	return err;
1033 }
1034 
1035 static int
1036 snd_rme96_capture_hw_params(struct snd_pcm_substream *substream,
1037 			    struct snd_pcm_hw_params *params)
1038 {
1039 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1040 	struct snd_pcm_runtime *runtime = substream->runtime;
1041 	int err, isadat, rate;
1042 
1043 	runtime->dma_area = (void __force *)(rme96->iobase +
1044 					     RME96_IO_REC_BUFFER);
1045 	runtime->dma_addr = rme96->port + RME96_IO_REC_BUFFER;
1046 	runtime->dma_bytes = RME96_BUFFER_SIZE;
1047 
1048 	spin_lock_irq(&rme96->lock);
1049 	if ((err = snd_rme96_capture_setformat(rme96, params_format(params))) < 0) {
1050 		spin_unlock_irq(&rme96->lock);
1051 		return err;
1052 	}
1053 	if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1054 		if ((err = snd_rme96_capture_analog_setrate(rme96,
1055 							    params_rate(params))) < 0)
1056 		{
1057 			spin_unlock_irq(&rme96->lock);
1058 			return err;
1059 		}
1060 	} else if ((rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0) {
1061                 if ((int)params_rate(params) != rate) {
1062 			spin_unlock_irq(&rme96->lock);
1063 			return -EIO;
1064                 }
1065                 if ((isadat && runtime->hw.channels_min == 2) ||
1066                     (!isadat && runtime->hw.channels_min == 8))
1067                 {
1068 			spin_unlock_irq(&rme96->lock);
1069 			return -EIO;
1070                 }
1071         }
1072 	snd_rme96_setframelog(rme96, params_channels(params), 0);
1073 	if (rme96->playback_periodsize != 0) {
1074 		if (params_period_size(params) << rme96->capture_frlog !=
1075 		    rme96->playback_periodsize)
1076 		{
1077 			spin_unlock_irq(&rme96->lock);
1078 			return -EBUSY;
1079 		}
1080 	}
1081 	rme96->capture_periodsize =
1082 		params_period_size(params) << rme96->capture_frlog;
1083 	snd_rme96_set_period_properties(rme96, rme96->capture_periodsize);
1084 	spin_unlock_irq(&rme96->lock);
1085 
1086 	return 0;
1087 }
1088 
1089 static void
1090 snd_rme96_trigger(struct rme96 *rme96,
1091 		  int op)
1092 {
1093 	if (op & RME96_TB_RESET_PLAYPOS)
1094 		writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1095 	if (op & RME96_TB_RESET_CAPTUREPOS)
1096 		writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1097 	if (op & RME96_TB_CLEAR_PLAYBACK_IRQ) {
1098 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1099 		if (rme96->rcreg & RME96_RCR_IRQ)
1100 			writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1101 	}
1102 	if (op & RME96_TB_CLEAR_CAPTURE_IRQ) {
1103 		rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1104 		if (rme96->rcreg & RME96_RCR_IRQ_2)
1105 			writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1106 	}
1107 	if (op & RME96_TB_START_PLAYBACK)
1108 		rme96->wcreg |= RME96_WCR_START;
1109 	if (op & RME96_TB_STOP_PLAYBACK)
1110 		rme96->wcreg &= ~RME96_WCR_START;
1111 	if (op & RME96_TB_START_CAPTURE)
1112 		rme96->wcreg |= RME96_WCR_START_2;
1113 	if (op & RME96_TB_STOP_CAPTURE)
1114 		rme96->wcreg &= ~RME96_WCR_START_2;
1115 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1116 }
1117 
1118 
1119 
1120 static irqreturn_t
1121 snd_rme96_interrupt(int irq,
1122 		    void *dev_id)
1123 {
1124 	struct rme96 *rme96 = (struct rme96 *)dev_id;
1125 
1126 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1127 	/* fastpath out, to ease interrupt sharing */
1128 	if (!((rme96->rcreg & RME96_RCR_IRQ) ||
1129 	      (rme96->rcreg & RME96_RCR_IRQ_2)))
1130 	{
1131 		return IRQ_NONE;
1132 	}
1133 
1134 	if (rme96->rcreg & RME96_RCR_IRQ) {
1135 		/* playback */
1136                 snd_pcm_period_elapsed(rme96->playback_substream);
1137 		writel(0, rme96->iobase + RME96_IO_CONFIRM_PLAY_IRQ);
1138 	}
1139 	if (rme96->rcreg & RME96_RCR_IRQ_2) {
1140 		/* capture */
1141 		snd_pcm_period_elapsed(rme96->capture_substream);
1142 		writel(0, rme96->iobase + RME96_IO_CONFIRM_REC_IRQ);
1143 	}
1144 	return IRQ_HANDLED;
1145 }
1146 
1147 static const unsigned int period_bytes[] = { RME96_SMALL_BLOCK_SIZE, RME96_LARGE_BLOCK_SIZE };
1148 
1149 static const struct snd_pcm_hw_constraint_list hw_constraints_period_bytes = {
1150 	.count = ARRAY_SIZE(period_bytes),
1151 	.list = period_bytes,
1152 	.mask = 0
1153 };
1154 
1155 static void
1156 rme96_set_buffer_size_constraint(struct rme96 *rme96,
1157 				 struct snd_pcm_runtime *runtime)
1158 {
1159 	unsigned int size;
1160 
1161 	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
1162 				     RME96_BUFFER_SIZE);
1163 	if ((size = rme96->playback_periodsize) != 0 ||
1164 	    (size = rme96->capture_periodsize) != 0)
1165 		snd_pcm_hw_constraint_single(runtime,
1166 					     SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1167 					     size);
1168 	else
1169 		snd_pcm_hw_constraint_list(runtime, 0,
1170 					   SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
1171 					   &hw_constraints_period_bytes);
1172 }
1173 
1174 static int
1175 snd_rme96_playback_spdif_open(struct snd_pcm_substream *substream)
1176 {
1177         int rate, dummy;
1178 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1179 	struct snd_pcm_runtime *runtime = substream->runtime;
1180 
1181 	snd_pcm_set_sync(substream);
1182 	spin_lock_irq(&rme96->lock);
1183 	if (rme96->playback_substream) {
1184 		spin_unlock_irq(&rme96->lock);
1185                 return -EBUSY;
1186         }
1187 	rme96->wcreg &= ~RME96_WCR_ADAT;
1188 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1189 	rme96->playback_substream = substream;
1190 	spin_unlock_irq(&rme96->lock);
1191 
1192 	runtime->hw = snd_rme96_playback_spdif_info;
1193 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1194             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1195 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
1196 	{
1197                 /* slave clock */
1198                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1199                 runtime->hw.rate_min = rate;
1200                 runtime->hw.rate_max = rate;
1201 	}
1202 	rme96_set_buffer_size_constraint(rme96, runtime);
1203 
1204 	rme96->wcreg_spdif_stream = rme96->wcreg_spdif;
1205 	rme96->spdif_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1206 	snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1207 		       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1208 	return 0;
1209 }
1210 
1211 static int
1212 snd_rme96_capture_spdif_open(struct snd_pcm_substream *substream)
1213 {
1214         int isadat, rate;
1215 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1216 	struct snd_pcm_runtime *runtime = substream->runtime;
1217 
1218 	snd_pcm_set_sync(substream);
1219 	runtime->hw = snd_rme96_capture_spdif_info;
1220         if (snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1221             (rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0)
1222         {
1223                 if (isadat) {
1224                         return -EIO;
1225                 }
1226                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1227                 runtime->hw.rate_min = rate;
1228                 runtime->hw.rate_max = rate;
1229         }
1230 
1231 	spin_lock_irq(&rme96->lock);
1232 	if (rme96->capture_substream) {
1233 		spin_unlock_irq(&rme96->lock);
1234                 return -EBUSY;
1235         }
1236 	rme96->capture_substream = substream;
1237 	spin_unlock_irq(&rme96->lock);
1238 
1239 	rme96_set_buffer_size_constraint(rme96, runtime);
1240 	return 0;
1241 }
1242 
1243 static int
1244 snd_rme96_playback_adat_open(struct snd_pcm_substream *substream)
1245 {
1246         int rate, dummy;
1247 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1248 	struct snd_pcm_runtime *runtime = substream->runtime;
1249 
1250 	snd_pcm_set_sync(substream);
1251 	spin_lock_irq(&rme96->lock);
1252 	if (rme96->playback_substream) {
1253 		spin_unlock_irq(&rme96->lock);
1254                 return -EBUSY;
1255         }
1256 	rme96->wcreg |= RME96_WCR_ADAT;
1257 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1258 	rme96->playback_substream = substream;
1259 	spin_unlock_irq(&rme96->lock);
1260 
1261 	runtime->hw = snd_rme96_playback_adat_info;
1262 	if (!(rme96->wcreg & RME96_WCR_MASTER) &&
1263             snd_rme96_getinputtype(rme96) != RME96_INPUT_ANALOG &&
1264 	    (rate = snd_rme96_capture_getrate(rme96, &dummy)) > 0)
1265 	{
1266                 /* slave clock */
1267                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1268                 runtime->hw.rate_min = rate;
1269                 runtime->hw.rate_max = rate;
1270 	}
1271 	rme96_set_buffer_size_constraint(rme96, runtime);
1272 	return 0;
1273 }
1274 
1275 static int
1276 snd_rme96_capture_adat_open(struct snd_pcm_substream *substream)
1277 {
1278         int isadat, rate;
1279 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1280 	struct snd_pcm_runtime *runtime = substream->runtime;
1281 
1282 	snd_pcm_set_sync(substream);
1283 	runtime->hw = snd_rme96_capture_adat_info;
1284         if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1285                 /* makes no sense to use analog input. Note that analog
1286                    expension cards AEB4/8-I are RME96_INPUT_INTERNAL */
1287                 return -EIO;
1288         }
1289         if ((rate = snd_rme96_capture_getrate(rme96, &isadat)) > 0) {
1290                 if (!isadat) {
1291                         return -EIO;
1292                 }
1293                 runtime->hw.rates = snd_pcm_rate_to_rate_bit(rate);
1294                 runtime->hw.rate_min = rate;
1295                 runtime->hw.rate_max = rate;
1296         }
1297 
1298 	spin_lock_irq(&rme96->lock);
1299 	if (rme96->capture_substream) {
1300 		spin_unlock_irq(&rme96->lock);
1301                 return -EBUSY;
1302         }
1303 	rme96->capture_substream = substream;
1304 	spin_unlock_irq(&rme96->lock);
1305 
1306 	rme96_set_buffer_size_constraint(rme96, runtime);
1307 	return 0;
1308 }
1309 
1310 static int
1311 snd_rme96_playback_close(struct snd_pcm_substream *substream)
1312 {
1313 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1314 	int spdif = 0;
1315 
1316 	spin_lock_irq(&rme96->lock);
1317 	if (RME96_ISPLAYING(rme96)) {
1318 		snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1319 	}
1320 	rme96->playback_substream = NULL;
1321 	rme96->playback_periodsize = 0;
1322 	spdif = (rme96->wcreg & RME96_WCR_ADAT) == 0;
1323 	spin_unlock_irq(&rme96->lock);
1324 	if (spdif) {
1325 		rme96->spdif_ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
1326 		snd_ctl_notify(rme96->card, SNDRV_CTL_EVENT_MASK_VALUE |
1327 			       SNDRV_CTL_EVENT_MASK_INFO, &rme96->spdif_ctl->id);
1328 	}
1329 	return 0;
1330 }
1331 
1332 static int
1333 snd_rme96_capture_close(struct snd_pcm_substream *substream)
1334 {
1335 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1336 
1337 	spin_lock_irq(&rme96->lock);
1338 	if (RME96_ISRECORDING(rme96)) {
1339 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1340 	}
1341 	rme96->capture_substream = NULL;
1342 	rme96->capture_periodsize = 0;
1343 	spin_unlock_irq(&rme96->lock);
1344 	return 0;
1345 }
1346 
1347 static int
1348 snd_rme96_playback_prepare(struct snd_pcm_substream *substream)
1349 {
1350 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1351 
1352 	spin_lock_irq(&rme96->lock);
1353 	if (RME96_ISPLAYING(rme96)) {
1354 		snd_rme96_trigger(rme96, RME96_STOP_PLAYBACK);
1355 	}
1356 	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1357 	spin_unlock_irq(&rme96->lock);
1358 	return 0;
1359 }
1360 
1361 static int
1362 snd_rme96_capture_prepare(struct snd_pcm_substream *substream)
1363 {
1364 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1365 
1366 	spin_lock_irq(&rme96->lock);
1367 	if (RME96_ISRECORDING(rme96)) {
1368 		snd_rme96_trigger(rme96, RME96_STOP_CAPTURE);
1369 	}
1370 	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1371 	spin_unlock_irq(&rme96->lock);
1372 	return 0;
1373 }
1374 
1375 static int
1376 snd_rme96_playback_trigger(struct snd_pcm_substream *substream,
1377 			   int cmd)
1378 {
1379 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1380 	struct snd_pcm_substream *s;
1381 	bool sync;
1382 
1383 	snd_pcm_group_for_each_entry(s, substream) {
1384 		if (snd_pcm_substream_chip(s) == rme96)
1385 			snd_pcm_trigger_done(s, substream);
1386 	}
1387 
1388 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1389 	       (rme96->playback_substream->group ==
1390 		rme96->capture_substream->group);
1391 
1392 	switch (cmd) {
1393 	case SNDRV_PCM_TRIGGER_START:
1394 		if (!RME96_ISPLAYING(rme96)) {
1395 			if (substream != rme96->playback_substream)
1396 				return -EBUSY;
1397 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1398 						 : RME96_START_PLAYBACK);
1399 		}
1400 		break;
1401 
1402 	case SNDRV_PCM_TRIGGER_SUSPEND:
1403 	case SNDRV_PCM_TRIGGER_STOP:
1404 		if (RME96_ISPLAYING(rme96)) {
1405 			if (substream != rme96->playback_substream)
1406 				return -EBUSY;
1407 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1408 						 :  RME96_STOP_PLAYBACK);
1409 		}
1410 		break;
1411 
1412 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1413 		if (RME96_ISPLAYING(rme96))
1414 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1415 						 : RME96_STOP_PLAYBACK);
1416 		break;
1417 
1418 	case SNDRV_PCM_TRIGGER_RESUME:
1419 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1420 		if (!RME96_ISPLAYING(rme96))
1421 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1422 						 : RME96_RESUME_PLAYBACK);
1423 		break;
1424 
1425 	default:
1426 		return -EINVAL;
1427 	}
1428 
1429 	return 0;
1430 }
1431 
1432 static int
1433 snd_rme96_capture_trigger(struct snd_pcm_substream *substream,
1434 			  int cmd)
1435 {
1436 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1437 	struct snd_pcm_substream *s;
1438 	bool sync;
1439 
1440 	snd_pcm_group_for_each_entry(s, substream) {
1441 		if (snd_pcm_substream_chip(s) == rme96)
1442 			snd_pcm_trigger_done(s, substream);
1443 	}
1444 
1445 	sync = (rme96->playback_substream && rme96->capture_substream) &&
1446 	       (rme96->playback_substream->group ==
1447 		rme96->capture_substream->group);
1448 
1449 	switch (cmd) {
1450 	case SNDRV_PCM_TRIGGER_START:
1451 		if (!RME96_ISRECORDING(rme96)) {
1452 			if (substream != rme96->capture_substream)
1453 				return -EBUSY;
1454 			snd_rme96_trigger(rme96, sync ? RME96_START_BOTH
1455 						 : RME96_START_CAPTURE);
1456 		}
1457 		break;
1458 
1459 	case SNDRV_PCM_TRIGGER_SUSPEND:
1460 	case SNDRV_PCM_TRIGGER_STOP:
1461 		if (RME96_ISRECORDING(rme96)) {
1462 			if (substream != rme96->capture_substream)
1463 				return -EBUSY;
1464 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1465 						 : RME96_STOP_CAPTURE);
1466 		}
1467 		break;
1468 
1469 	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
1470 		if (RME96_ISRECORDING(rme96))
1471 			snd_rme96_trigger(rme96, sync ? RME96_STOP_BOTH
1472 						 : RME96_STOP_CAPTURE);
1473 		break;
1474 
1475 	case SNDRV_PCM_TRIGGER_RESUME:
1476 	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
1477 		if (!RME96_ISRECORDING(rme96))
1478 			snd_rme96_trigger(rme96, sync ? RME96_RESUME_BOTH
1479 						 : RME96_RESUME_CAPTURE);
1480 		break;
1481 
1482 	default:
1483 		return -EINVAL;
1484 	}
1485 
1486 	return 0;
1487 }
1488 
1489 static snd_pcm_uframes_t
1490 snd_rme96_playback_pointer(struct snd_pcm_substream *substream)
1491 {
1492 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1493 	return snd_rme96_playback_ptr(rme96);
1494 }
1495 
1496 static snd_pcm_uframes_t
1497 snd_rme96_capture_pointer(struct snd_pcm_substream *substream)
1498 {
1499 	struct rme96 *rme96 = snd_pcm_substream_chip(substream);
1500 	return snd_rme96_capture_ptr(rme96);
1501 }
1502 
1503 static const struct snd_pcm_ops snd_rme96_playback_spdif_ops = {
1504 	.open =		snd_rme96_playback_spdif_open,
1505 	.close =	snd_rme96_playback_close,
1506 	.hw_params =	snd_rme96_playback_hw_params,
1507 	.prepare =	snd_rme96_playback_prepare,
1508 	.trigger =	snd_rme96_playback_trigger,
1509 	.pointer =	snd_rme96_playback_pointer,
1510 	.copy_user =	snd_rme96_playback_copy,
1511 	.copy_kernel =	snd_rme96_playback_copy_kernel,
1512 	.fill_silence =	snd_rme96_playback_silence,
1513 	.mmap =		snd_pcm_lib_mmap_iomem,
1514 };
1515 
1516 static const struct snd_pcm_ops snd_rme96_capture_spdif_ops = {
1517 	.open =		snd_rme96_capture_spdif_open,
1518 	.close =	snd_rme96_capture_close,
1519 	.hw_params =	snd_rme96_capture_hw_params,
1520 	.prepare =	snd_rme96_capture_prepare,
1521 	.trigger =	snd_rme96_capture_trigger,
1522 	.pointer =	snd_rme96_capture_pointer,
1523 	.copy_user =	snd_rme96_capture_copy,
1524 	.copy_kernel =	snd_rme96_capture_copy_kernel,
1525 	.mmap =		snd_pcm_lib_mmap_iomem,
1526 };
1527 
1528 static const struct snd_pcm_ops snd_rme96_playback_adat_ops = {
1529 	.open =		snd_rme96_playback_adat_open,
1530 	.close =	snd_rme96_playback_close,
1531 	.hw_params =	snd_rme96_playback_hw_params,
1532 	.prepare =	snd_rme96_playback_prepare,
1533 	.trigger =	snd_rme96_playback_trigger,
1534 	.pointer =	snd_rme96_playback_pointer,
1535 	.copy_user =	snd_rme96_playback_copy,
1536 	.copy_kernel =	snd_rme96_playback_copy_kernel,
1537 	.fill_silence =	snd_rme96_playback_silence,
1538 	.mmap =		snd_pcm_lib_mmap_iomem,
1539 };
1540 
1541 static const struct snd_pcm_ops snd_rme96_capture_adat_ops = {
1542 	.open =		snd_rme96_capture_adat_open,
1543 	.close =	snd_rme96_capture_close,
1544 	.hw_params =	snd_rme96_capture_hw_params,
1545 	.prepare =	snd_rme96_capture_prepare,
1546 	.trigger =	snd_rme96_capture_trigger,
1547 	.pointer =	snd_rme96_capture_pointer,
1548 	.copy_user =	snd_rme96_capture_copy,
1549 	.copy_kernel =	snd_rme96_capture_copy_kernel,
1550 	.mmap =		snd_pcm_lib_mmap_iomem,
1551 };
1552 
1553 static void
1554 snd_rme96_free(void *private_data)
1555 {
1556 	struct rme96 *rme96 = (struct rme96 *)private_data;
1557 
1558 	if (!rme96)
1559 	        return;
1560 
1561 	if (rme96->irq >= 0) {
1562 		snd_rme96_trigger(rme96, RME96_STOP_BOTH);
1563 		rme96->areg &= ~RME96_AR_DAC_EN;
1564 		writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1565 		free_irq(rme96->irq, (void *)rme96);
1566 		rme96->irq = -1;
1567 	}
1568 	if (rme96->iobase) {
1569 		iounmap(rme96->iobase);
1570 		rme96->iobase = NULL;
1571 	}
1572 	if (rme96->port) {
1573 		pci_release_regions(rme96->pci);
1574 		rme96->port = 0;
1575 	}
1576 #ifdef CONFIG_PM_SLEEP
1577 	vfree(rme96->playback_suspend_buffer);
1578 	vfree(rme96->capture_suspend_buffer);
1579 #endif
1580 	pci_disable_device(rme96->pci);
1581 }
1582 
1583 static void
1584 snd_rme96_free_spdif_pcm(struct snd_pcm *pcm)
1585 {
1586 	struct rme96 *rme96 = pcm->private_data;
1587 	rme96->spdif_pcm = NULL;
1588 }
1589 
1590 static void
1591 snd_rme96_free_adat_pcm(struct snd_pcm *pcm)
1592 {
1593 	struct rme96 *rme96 = pcm->private_data;
1594 	rme96->adat_pcm = NULL;
1595 }
1596 
1597 static int
1598 snd_rme96_create(struct rme96 *rme96)
1599 {
1600 	struct pci_dev *pci = rme96->pci;
1601 	int err;
1602 
1603 	rme96->irq = -1;
1604 	spin_lock_init(&rme96->lock);
1605 
1606 	if ((err = pci_enable_device(pci)) < 0)
1607 		return err;
1608 
1609 	if ((err = pci_request_regions(pci, "RME96")) < 0)
1610 		return err;
1611 	rme96->port = pci_resource_start(rme96->pci, 0);
1612 
1613 	rme96->iobase = ioremap(rme96->port, RME96_IO_SIZE);
1614 	if (!rme96->iobase) {
1615 		dev_err(rme96->card->dev,
1616 			"unable to remap memory region 0x%lx-0x%lx\n",
1617 			rme96->port, rme96->port + RME96_IO_SIZE - 1);
1618 		return -ENOMEM;
1619 	}
1620 
1621 	if (request_irq(pci->irq, snd_rme96_interrupt, IRQF_SHARED,
1622 			KBUILD_MODNAME, rme96)) {
1623 		dev_err(rme96->card->dev, "unable to grab IRQ %d\n", pci->irq);
1624 		return -EBUSY;
1625 	}
1626 	rme96->irq = pci->irq;
1627 	rme96->card->sync_irq = rme96->irq;
1628 
1629 	/* read the card's revision number */
1630 	pci_read_config_byte(pci, 8, &rme96->rev);
1631 
1632 	/* set up ALSA pcm device for S/PDIF */
1633 	if ((err = snd_pcm_new(rme96->card, "Digi96 IEC958", 0,
1634 			       1, 1, &rme96->spdif_pcm)) < 0)
1635 	{
1636 		return err;
1637 	}
1638 	rme96->spdif_pcm->private_data = rme96;
1639 	rme96->spdif_pcm->private_free = snd_rme96_free_spdif_pcm;
1640 	strcpy(rme96->spdif_pcm->name, "Digi96 IEC958");
1641 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_spdif_ops);
1642 	snd_pcm_set_ops(rme96->spdif_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_spdif_ops);
1643 
1644 	rme96->spdif_pcm->info_flags = 0;
1645 
1646 	/* set up ALSA pcm device for ADAT */
1647 	if (pci->device == PCI_DEVICE_ID_RME_DIGI96) {
1648 		/* ADAT is not available on the base model */
1649 		rme96->adat_pcm = NULL;
1650 	} else {
1651 		if ((err = snd_pcm_new(rme96->card, "Digi96 ADAT", 1,
1652 				       1, 1, &rme96->adat_pcm)) < 0)
1653 		{
1654 			return err;
1655 		}
1656 		rme96->adat_pcm->private_data = rme96;
1657 		rme96->adat_pcm->private_free = snd_rme96_free_adat_pcm;
1658 		strcpy(rme96->adat_pcm->name, "Digi96 ADAT");
1659 		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_rme96_playback_adat_ops);
1660 		snd_pcm_set_ops(rme96->adat_pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_rme96_capture_adat_ops);
1661 
1662 		rme96->adat_pcm->info_flags = 0;
1663 	}
1664 
1665 	rme96->playback_periodsize = 0;
1666 	rme96->capture_periodsize = 0;
1667 
1668 	/* make sure playback/capture is stopped, if by some reason active */
1669 	snd_rme96_trigger(rme96, RME96_STOP_BOTH);
1670 
1671 	/* set default values in registers */
1672 	rme96->wcreg =
1673 		RME96_WCR_FREQ_1 | /* set 44.1 kHz playback */
1674 		RME96_WCR_SEL |    /* normal playback */
1675 		RME96_WCR_MASTER | /* set to master clock mode */
1676 		RME96_WCR_INP_0;   /* set coaxial input */
1677 
1678 	rme96->areg = RME96_AR_FREQPAD_1; /* set 44.1 kHz analog capture */
1679 
1680 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1681 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1682 
1683 	/* reset the ADC */
1684 	writel(rme96->areg | RME96_AR_PD2,
1685 	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
1686 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1687 
1688 	/* reset and enable the DAC (order is important). */
1689 	snd_rme96_reset_dac(rme96);
1690 	rme96->areg |= RME96_AR_DAC_EN;
1691 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
1692 
1693 	/* reset playback and record buffer pointers */
1694 	writel(0, rme96->iobase + RME96_IO_RESET_PLAY_POS);
1695 	writel(0, rme96->iobase + RME96_IO_RESET_REC_POS);
1696 
1697 	/* reset volume */
1698 	rme96->vol[0] = rme96->vol[1] = 0;
1699 	if (RME96_HAS_ANALOG_OUT(rme96)) {
1700 		snd_rme96_apply_dac_volume(rme96);
1701 	}
1702 
1703 	/* init switch interface */
1704 	if ((err = snd_rme96_create_switches(rme96->card, rme96)) < 0) {
1705 		return err;
1706 	}
1707 
1708         /* init proc interface */
1709 	snd_rme96_proc_init(rme96);
1710 
1711 	return 0;
1712 }
1713 
1714 /*
1715  * proc interface
1716  */
1717 
1718 static void
1719 snd_rme96_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer)
1720 {
1721 	int n;
1722 	struct rme96 *rme96 = entry->private_data;
1723 
1724 	rme96->rcreg = readl(rme96->iobase + RME96_IO_CONTROL_REGISTER);
1725 
1726 	snd_iprintf(buffer, rme96->card->longname);
1727 	snd_iprintf(buffer, " (index #%d)\n", rme96->card->number + 1);
1728 
1729 	snd_iprintf(buffer, "\nGeneral settings\n");
1730 	if (rme96->wcreg & RME96_WCR_IDIS) {
1731 		snd_iprintf(buffer, "  period size: N/A (interrupts "
1732 			    "disabled)\n");
1733 	} else if (rme96->wcreg & RME96_WCR_ISEL) {
1734 		snd_iprintf(buffer, "  period size: 2048 bytes\n");
1735 	} else {
1736 		snd_iprintf(buffer, "  period size: 8192 bytes\n");
1737 	}
1738 	snd_iprintf(buffer, "\nInput settings\n");
1739 	switch (snd_rme96_getinputtype(rme96)) {
1740 	case RME96_INPUT_OPTICAL:
1741 		snd_iprintf(buffer, "  input: optical");
1742 		break;
1743 	case RME96_INPUT_COAXIAL:
1744 		snd_iprintf(buffer, "  input: coaxial");
1745 		break;
1746 	case RME96_INPUT_INTERNAL:
1747 		snd_iprintf(buffer, "  input: internal");
1748 		break;
1749 	case RME96_INPUT_XLR:
1750 		snd_iprintf(buffer, "  input: XLR");
1751 		break;
1752 	case RME96_INPUT_ANALOG:
1753 		snd_iprintf(buffer, "  input: analog");
1754 		break;
1755 	}
1756 	if (snd_rme96_capture_getrate(rme96, &n) < 0) {
1757 		snd_iprintf(buffer, "\n  sample rate: no valid signal\n");
1758 	} else {
1759 		if (n) {
1760 			snd_iprintf(buffer, " (8 channels)\n");
1761 		} else {
1762 			snd_iprintf(buffer, " (2 channels)\n");
1763 		}
1764 		snd_iprintf(buffer, "  sample rate: %d Hz\n",
1765 			    snd_rme96_capture_getrate(rme96, &n));
1766 	}
1767 	if (rme96->wcreg & RME96_WCR_MODE24_2) {
1768 		snd_iprintf(buffer, "  sample format: 24 bit\n");
1769 	} else {
1770 		snd_iprintf(buffer, "  sample format: 16 bit\n");
1771 	}
1772 
1773 	snd_iprintf(buffer, "\nOutput settings\n");
1774 	if (rme96->wcreg & RME96_WCR_SEL) {
1775 		snd_iprintf(buffer, "  output signal: normal playback\n");
1776 	} else {
1777 		snd_iprintf(buffer, "  output signal: same as input\n");
1778 	}
1779 	snd_iprintf(buffer, "  sample rate: %d Hz\n",
1780 		    snd_rme96_playback_getrate(rme96));
1781 	if (rme96->wcreg & RME96_WCR_MODE24) {
1782 		snd_iprintf(buffer, "  sample format: 24 bit\n");
1783 	} else {
1784 		snd_iprintf(buffer, "  sample format: 16 bit\n");
1785 	}
1786 	if (rme96->areg & RME96_AR_WSEL) {
1787 		snd_iprintf(buffer, "  sample clock source: word clock\n");
1788 	} else if (rme96->wcreg & RME96_WCR_MASTER) {
1789 		snd_iprintf(buffer, "  sample clock source: internal\n");
1790 	} else if (snd_rme96_getinputtype(rme96) == RME96_INPUT_ANALOG) {
1791 		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to analog input setting)\n");
1792 	} else if (snd_rme96_capture_getrate(rme96, &n) < 0) {
1793 		snd_iprintf(buffer, "  sample clock source: autosync (internal anyway due to no valid signal)\n");
1794 	} else {
1795 		snd_iprintf(buffer, "  sample clock source: autosync\n");
1796 	}
1797 	if (rme96->wcreg & RME96_WCR_PRO) {
1798 		snd_iprintf(buffer, "  format: AES/EBU (professional)\n");
1799 	} else {
1800 		snd_iprintf(buffer, "  format: IEC958 (consumer)\n");
1801 	}
1802 	if (rme96->wcreg & RME96_WCR_EMP) {
1803 		snd_iprintf(buffer, "  emphasis: on\n");
1804 	} else {
1805 		snd_iprintf(buffer, "  emphasis: off\n");
1806 	}
1807 	if (rme96->wcreg & RME96_WCR_DOLBY) {
1808 		snd_iprintf(buffer, "  non-audio (dolby): on\n");
1809 	} else {
1810 		snd_iprintf(buffer, "  non-audio (dolby): off\n");
1811 	}
1812 	if (RME96_HAS_ANALOG_IN(rme96)) {
1813 		snd_iprintf(buffer, "\nAnalog output settings\n");
1814 		switch (snd_rme96_getmontracks(rme96)) {
1815 		case RME96_MONITOR_TRACKS_1_2:
1816 			snd_iprintf(buffer, "  monitored ADAT tracks: 1+2\n");
1817 			break;
1818 		case RME96_MONITOR_TRACKS_3_4:
1819 			snd_iprintf(buffer, "  monitored ADAT tracks: 3+4\n");
1820 			break;
1821 		case RME96_MONITOR_TRACKS_5_6:
1822 			snd_iprintf(buffer, "  monitored ADAT tracks: 5+6\n");
1823 			break;
1824 		case RME96_MONITOR_TRACKS_7_8:
1825 			snd_iprintf(buffer, "  monitored ADAT tracks: 7+8\n");
1826 			break;
1827 		}
1828 		switch (snd_rme96_getattenuation(rme96)) {
1829 		case RME96_ATTENUATION_0:
1830 			snd_iprintf(buffer, "  attenuation: 0 dB\n");
1831 			break;
1832 		case RME96_ATTENUATION_6:
1833 			snd_iprintf(buffer, "  attenuation: -6 dB\n");
1834 			break;
1835 		case RME96_ATTENUATION_12:
1836 			snd_iprintf(buffer, "  attenuation: -12 dB\n");
1837 			break;
1838 		case RME96_ATTENUATION_18:
1839 			snd_iprintf(buffer, "  attenuation: -18 dB\n");
1840 			break;
1841 		}
1842 		snd_iprintf(buffer, "  volume left: %u\n", rme96->vol[0]);
1843 		snd_iprintf(buffer, "  volume right: %u\n", rme96->vol[1]);
1844 	}
1845 }
1846 
1847 static void snd_rme96_proc_init(struct rme96 *rme96)
1848 {
1849 	snd_card_ro_proc_new(rme96->card, "rme96", rme96, snd_rme96_proc_read);
1850 }
1851 
1852 /*
1853  * control interface
1854  */
1855 
1856 #define snd_rme96_info_loopback_control		snd_ctl_boolean_mono_info
1857 
1858 static int
1859 snd_rme96_get_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1860 {
1861 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1862 
1863 	spin_lock_irq(&rme96->lock);
1864 	ucontrol->value.integer.value[0] = rme96->wcreg & RME96_WCR_SEL ? 0 : 1;
1865 	spin_unlock_irq(&rme96->lock);
1866 	return 0;
1867 }
1868 static int
1869 snd_rme96_put_loopback_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1870 {
1871 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1872 	unsigned int val;
1873 	int change;
1874 
1875 	val = ucontrol->value.integer.value[0] ? 0 : RME96_WCR_SEL;
1876 	spin_lock_irq(&rme96->lock);
1877 	val = (rme96->wcreg & ~RME96_WCR_SEL) | val;
1878 	change = val != rme96->wcreg;
1879 	rme96->wcreg = val;
1880 	writel(val, rme96->iobase + RME96_IO_CONTROL_REGISTER);
1881 	spin_unlock_irq(&rme96->lock);
1882 	return change;
1883 }
1884 
1885 static int
1886 snd_rme96_info_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
1887 {
1888 	static const char * const _texts[5] = {
1889 		"Optical", "Coaxial", "Internal", "XLR", "Analog"
1890 	};
1891 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1892 	const char *texts[5] = {
1893 		_texts[0], _texts[1], _texts[2], _texts[3], _texts[4]
1894 	};
1895 	int num_items;
1896 
1897 	switch (rme96->pci->device) {
1898 	case PCI_DEVICE_ID_RME_DIGI96:
1899 	case PCI_DEVICE_ID_RME_DIGI96_8:
1900 		num_items = 3;
1901 		break;
1902 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1903 		num_items = 4;
1904 		break;
1905 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1906 		if (rme96->rev > 4) {
1907 			/* PST */
1908 			num_items = 4;
1909 			texts[3] = _texts[4]; /* Analog instead of XLR */
1910 		} else {
1911 			/* PAD */
1912 			num_items = 5;
1913 		}
1914 		break;
1915 	default:
1916 		snd_BUG();
1917 		return -EINVAL;
1918 	}
1919 	return snd_ctl_enum_info(uinfo, 1, num_items, texts);
1920 }
1921 static int
1922 snd_rme96_get_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1923 {
1924 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1925 	unsigned int items = 3;
1926 
1927 	spin_lock_irq(&rme96->lock);
1928 	ucontrol->value.enumerated.item[0] = snd_rme96_getinputtype(rme96);
1929 
1930 	switch (rme96->pci->device) {
1931 	case PCI_DEVICE_ID_RME_DIGI96:
1932 	case PCI_DEVICE_ID_RME_DIGI96_8:
1933 		items = 3;
1934 		break;
1935 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1936 		items = 4;
1937 		break;
1938 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1939 		if (rme96->rev > 4) {
1940 			/* for handling PST case, (INPUT_ANALOG is moved to INPUT_XLR */
1941 			if (ucontrol->value.enumerated.item[0] == RME96_INPUT_ANALOG) {
1942 				ucontrol->value.enumerated.item[0] = RME96_INPUT_XLR;
1943 			}
1944 			items = 4;
1945 		} else {
1946 			items = 5;
1947 		}
1948 		break;
1949 	default:
1950 		snd_BUG();
1951 		break;
1952 	}
1953 	if (ucontrol->value.enumerated.item[0] >= items) {
1954 		ucontrol->value.enumerated.item[0] = items - 1;
1955 	}
1956 
1957 	spin_unlock_irq(&rme96->lock);
1958 	return 0;
1959 }
1960 static int
1961 snd_rme96_put_inputtype_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
1962 {
1963 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
1964 	unsigned int val;
1965 	int change, items = 3;
1966 
1967 	switch (rme96->pci->device) {
1968 	case PCI_DEVICE_ID_RME_DIGI96:
1969 	case PCI_DEVICE_ID_RME_DIGI96_8:
1970 		items = 3;
1971 		break;
1972 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
1973 		items = 4;
1974 		break;
1975 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
1976 		if (rme96->rev > 4) {
1977 			items = 4;
1978 		} else {
1979 			items = 5;
1980 		}
1981 		break;
1982 	default:
1983 		snd_BUG();
1984 		break;
1985 	}
1986 	val = ucontrol->value.enumerated.item[0] % items;
1987 
1988 	/* special case for PST */
1989 	if (rme96->pci->device == PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST && rme96->rev > 4) {
1990 		if (val == RME96_INPUT_XLR) {
1991 			val = RME96_INPUT_ANALOG;
1992 		}
1993 	}
1994 
1995 	spin_lock_irq(&rme96->lock);
1996 	change = (int)val != snd_rme96_getinputtype(rme96);
1997 	snd_rme96_setinputtype(rme96, val);
1998 	spin_unlock_irq(&rme96->lock);
1999 	return change;
2000 }
2001 
2002 static int
2003 snd_rme96_info_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2004 {
2005 	static const char * const texts[3] = { "AutoSync", "Internal", "Word" };
2006 
2007 	return snd_ctl_enum_info(uinfo, 1, 3, texts);
2008 }
2009 static int
2010 snd_rme96_get_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2011 {
2012 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2013 
2014 	spin_lock_irq(&rme96->lock);
2015 	ucontrol->value.enumerated.item[0] = snd_rme96_getclockmode(rme96);
2016 	spin_unlock_irq(&rme96->lock);
2017 	return 0;
2018 }
2019 static int
2020 snd_rme96_put_clockmode_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2021 {
2022 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2023 	unsigned int val;
2024 	int change;
2025 
2026 	val = ucontrol->value.enumerated.item[0] % 3;
2027 	spin_lock_irq(&rme96->lock);
2028 	change = (int)val != snd_rme96_getclockmode(rme96);
2029 	snd_rme96_setclockmode(rme96, val);
2030 	spin_unlock_irq(&rme96->lock);
2031 	return change;
2032 }
2033 
2034 static int
2035 snd_rme96_info_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2036 {
2037 	static const char * const texts[4] = {
2038 		"0 dB", "-6 dB", "-12 dB", "-18 dB"
2039 	};
2040 
2041 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
2042 }
2043 static int
2044 snd_rme96_get_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2045 {
2046 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2047 
2048 	spin_lock_irq(&rme96->lock);
2049 	ucontrol->value.enumerated.item[0] = snd_rme96_getattenuation(rme96);
2050 	spin_unlock_irq(&rme96->lock);
2051 	return 0;
2052 }
2053 static int
2054 snd_rme96_put_attenuation_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2055 {
2056 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2057 	unsigned int val;
2058 	int change;
2059 
2060 	val = ucontrol->value.enumerated.item[0] % 4;
2061 	spin_lock_irq(&rme96->lock);
2062 
2063 	change = (int)val != snd_rme96_getattenuation(rme96);
2064 	snd_rme96_setattenuation(rme96, val);
2065 	spin_unlock_irq(&rme96->lock);
2066 	return change;
2067 }
2068 
2069 static int
2070 snd_rme96_info_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2071 {
2072 	static const char * const texts[4] = { "1+2", "3+4", "5+6", "7+8" };
2073 
2074 	return snd_ctl_enum_info(uinfo, 1, 4, texts);
2075 }
2076 static int
2077 snd_rme96_get_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2078 {
2079 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2080 
2081 	spin_lock_irq(&rme96->lock);
2082 	ucontrol->value.enumerated.item[0] = snd_rme96_getmontracks(rme96);
2083 	spin_unlock_irq(&rme96->lock);
2084 	return 0;
2085 }
2086 static int
2087 snd_rme96_put_montracks_control(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2088 {
2089 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2090 	unsigned int val;
2091 	int change;
2092 
2093 	val = ucontrol->value.enumerated.item[0] % 4;
2094 	spin_lock_irq(&rme96->lock);
2095 	change = (int)val != snd_rme96_getmontracks(rme96);
2096 	snd_rme96_setmontracks(rme96, val);
2097 	spin_unlock_irq(&rme96->lock);
2098 	return change;
2099 }
2100 
2101 static u32 snd_rme96_convert_from_aes(struct snd_aes_iec958 *aes)
2102 {
2103 	u32 val = 0;
2104 	val |= (aes->status[0] & IEC958_AES0_PROFESSIONAL) ? RME96_WCR_PRO : 0;
2105 	val |= (aes->status[0] & IEC958_AES0_NONAUDIO) ? RME96_WCR_DOLBY : 0;
2106 	if (val & RME96_WCR_PRO)
2107 		val |= (aes->status[0] & IEC958_AES0_PRO_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2108 	else
2109 		val |= (aes->status[0] & IEC958_AES0_CON_EMPHASIS_5015) ? RME96_WCR_EMP : 0;
2110 	return val;
2111 }
2112 
2113 static void snd_rme96_convert_to_aes(struct snd_aes_iec958 *aes, u32 val)
2114 {
2115 	aes->status[0] = ((val & RME96_WCR_PRO) ? IEC958_AES0_PROFESSIONAL : 0) |
2116 			 ((val & RME96_WCR_DOLBY) ? IEC958_AES0_NONAUDIO : 0);
2117 	if (val & RME96_WCR_PRO)
2118 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_PRO_EMPHASIS_5015 : 0;
2119 	else
2120 		aes->status[0] |= (val & RME96_WCR_EMP) ? IEC958_AES0_CON_EMPHASIS_5015 : 0;
2121 }
2122 
2123 static int snd_rme96_control_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2124 {
2125 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2126 	uinfo->count = 1;
2127 	return 0;
2128 }
2129 
2130 static int snd_rme96_control_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2131 {
2132 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2133 
2134 	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif);
2135 	return 0;
2136 }
2137 
2138 static int snd_rme96_control_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2139 {
2140 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2141 	int change;
2142 	u32 val;
2143 
2144 	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
2145 	spin_lock_irq(&rme96->lock);
2146 	change = val != rme96->wcreg_spdif;
2147 	rme96->wcreg_spdif = val;
2148 	spin_unlock_irq(&rme96->lock);
2149 	return change;
2150 }
2151 
2152 static int snd_rme96_control_spdif_stream_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2153 {
2154 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2155 	uinfo->count = 1;
2156 	return 0;
2157 }
2158 
2159 static int snd_rme96_control_spdif_stream_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2160 {
2161 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2162 
2163 	snd_rme96_convert_to_aes(&ucontrol->value.iec958, rme96->wcreg_spdif_stream);
2164 	return 0;
2165 }
2166 
2167 static int snd_rme96_control_spdif_stream_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2168 {
2169 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2170 	int change;
2171 	u32 val;
2172 
2173 	val = snd_rme96_convert_from_aes(&ucontrol->value.iec958);
2174 	spin_lock_irq(&rme96->lock);
2175 	change = val != rme96->wcreg_spdif_stream;
2176 	rme96->wcreg_spdif_stream = val;
2177 	rme96->wcreg &= ~(RME96_WCR_PRO | RME96_WCR_DOLBY | RME96_WCR_EMP);
2178 	rme96->wcreg |= val;
2179 	writel(rme96->wcreg, rme96->iobase + RME96_IO_CONTROL_REGISTER);
2180 	spin_unlock_irq(&rme96->lock);
2181 	return change;
2182 }
2183 
2184 static int snd_rme96_control_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2185 {
2186 	uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
2187 	uinfo->count = 1;
2188 	return 0;
2189 }
2190 
2191 static int snd_rme96_control_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
2192 {
2193 	ucontrol->value.iec958.status[0] = kcontrol->private_value;
2194 	return 0;
2195 }
2196 
2197 static int
2198 snd_rme96_dac_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
2199 {
2200 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2201 
2202         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
2203         uinfo->count = 2;
2204         uinfo->value.integer.min = 0;
2205 	uinfo->value.integer.max = RME96_185X_MAX_OUT(rme96);
2206         return 0;
2207 }
2208 
2209 static int
2210 snd_rme96_dac_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2211 {
2212 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2213 
2214 	spin_lock_irq(&rme96->lock);
2215         u->value.integer.value[0] = rme96->vol[0];
2216         u->value.integer.value[1] = rme96->vol[1];
2217 	spin_unlock_irq(&rme96->lock);
2218 
2219         return 0;
2220 }
2221 
2222 static int
2223 snd_rme96_dac_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *u)
2224 {
2225 	struct rme96 *rme96 = snd_kcontrol_chip(kcontrol);
2226         int change = 0;
2227 	unsigned int vol, maxvol;
2228 
2229 
2230 	if (!RME96_HAS_ANALOG_OUT(rme96))
2231 		return -EINVAL;
2232 	maxvol = RME96_185X_MAX_OUT(rme96);
2233 	spin_lock_irq(&rme96->lock);
2234 	vol = u->value.integer.value[0];
2235 	if (vol != rme96->vol[0] && vol <= maxvol) {
2236 		rme96->vol[0] = vol;
2237 		change = 1;
2238 	}
2239 	vol = u->value.integer.value[1];
2240 	if (vol != rme96->vol[1] && vol <= maxvol) {
2241 		rme96->vol[1] = vol;
2242 		change = 1;
2243 	}
2244 	if (change)
2245 		snd_rme96_apply_dac_volume(rme96);
2246 	spin_unlock_irq(&rme96->lock);
2247 
2248         return change;
2249 }
2250 
2251 static const struct snd_kcontrol_new snd_rme96_controls[] = {
2252 {
2253 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2254 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
2255 	.info =		snd_rme96_control_spdif_info,
2256 	.get =		snd_rme96_control_spdif_get,
2257 	.put =		snd_rme96_control_spdif_put
2258 },
2259 {
2260 	.access =	SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
2261 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2262 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
2263 	.info =		snd_rme96_control_spdif_stream_info,
2264 	.get =		snd_rme96_control_spdif_stream_get,
2265 	.put =		snd_rme96_control_spdif_stream_put
2266 },
2267 {
2268 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2269 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2270 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
2271 	.info =		snd_rme96_control_spdif_mask_info,
2272 	.get =		snd_rme96_control_spdif_mask_get,
2273 	.private_value = IEC958_AES0_NONAUDIO |
2274 			IEC958_AES0_PROFESSIONAL |
2275 			IEC958_AES0_CON_EMPHASIS
2276 },
2277 {
2278 	.access =	SNDRV_CTL_ELEM_ACCESS_READ,
2279 	.iface =	SNDRV_CTL_ELEM_IFACE_PCM,
2280 	.name =		SNDRV_CTL_NAME_IEC958("",PLAYBACK,PRO_MASK),
2281 	.info =		snd_rme96_control_spdif_mask_info,
2282 	.get =		snd_rme96_control_spdif_mask_get,
2283 	.private_value = IEC958_AES0_NONAUDIO |
2284 			IEC958_AES0_PROFESSIONAL |
2285 			IEC958_AES0_PRO_EMPHASIS
2286 },
2287 {
2288         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2289 	.name =         "Input Connector",
2290 	.info =         snd_rme96_info_inputtype_control,
2291 	.get =          snd_rme96_get_inputtype_control,
2292 	.put =          snd_rme96_put_inputtype_control
2293 },
2294 {
2295         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2296 	.name =         "Loopback Input",
2297 	.info =         snd_rme96_info_loopback_control,
2298 	.get =          snd_rme96_get_loopback_control,
2299 	.put =          snd_rme96_put_loopback_control
2300 },
2301 {
2302         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2303 	.name =         "Sample Clock Source",
2304 	.info =         snd_rme96_info_clockmode_control,
2305 	.get =          snd_rme96_get_clockmode_control,
2306 	.put =          snd_rme96_put_clockmode_control
2307 },
2308 {
2309         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2310 	.name =         "Monitor Tracks",
2311 	.info =         snd_rme96_info_montracks_control,
2312 	.get =          snd_rme96_get_montracks_control,
2313 	.put =          snd_rme96_put_montracks_control
2314 },
2315 {
2316         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2317 	.name =         "Attenuation",
2318 	.info =         snd_rme96_info_attenuation_control,
2319 	.get =          snd_rme96_get_attenuation_control,
2320 	.put =          snd_rme96_put_attenuation_control
2321 },
2322 {
2323         .iface =        SNDRV_CTL_ELEM_IFACE_MIXER,
2324 	.name =         "DAC Playback Volume",
2325 	.info =         snd_rme96_dac_volume_info,
2326 	.get =          snd_rme96_dac_volume_get,
2327 	.put =          snd_rme96_dac_volume_put
2328 }
2329 };
2330 
2331 static int
2332 snd_rme96_create_switches(struct snd_card *card,
2333 			  struct rme96 *rme96)
2334 {
2335 	int idx, err;
2336 	struct snd_kcontrol *kctl;
2337 
2338 	for (idx = 0; idx < 7; idx++) {
2339 		if ((err = snd_ctl_add(card, kctl = snd_ctl_new1(&snd_rme96_controls[idx], rme96))) < 0)
2340 			return err;
2341 		if (idx == 1)	/* IEC958 (S/PDIF) Stream */
2342 			rme96->spdif_ctl = kctl;
2343 	}
2344 
2345 	if (RME96_HAS_ANALOG_OUT(rme96)) {
2346 		for (idx = 7; idx < 10; idx++)
2347 			if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_rme96_controls[idx], rme96))) < 0)
2348 				return err;
2349 	}
2350 
2351 	return 0;
2352 }
2353 
2354 /*
2355  * Card initialisation
2356  */
2357 
2358 #ifdef CONFIG_PM_SLEEP
2359 
2360 static int rme96_suspend(struct device *dev)
2361 {
2362 	struct snd_card *card = dev_get_drvdata(dev);
2363 	struct rme96 *rme96 = card->private_data;
2364 
2365 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
2366 
2367 	/* save capture & playback pointers */
2368 	rme96->playback_pointer = readl(rme96->iobase + RME96_IO_GET_PLAY_POS)
2369 				  & RME96_RCR_AUDIO_ADDR_MASK;
2370 	rme96->capture_pointer = readl(rme96->iobase + RME96_IO_GET_REC_POS)
2371 				 & RME96_RCR_AUDIO_ADDR_MASK;
2372 
2373 	/* save playback and capture buffers */
2374 	memcpy_fromio(rme96->playback_suspend_buffer,
2375 		      rme96->iobase + RME96_IO_PLAY_BUFFER, RME96_BUFFER_SIZE);
2376 	memcpy_fromio(rme96->capture_suspend_buffer,
2377 		      rme96->iobase + RME96_IO_REC_BUFFER, RME96_BUFFER_SIZE);
2378 
2379 	/* disable the DAC  */
2380 	rme96->areg &= ~RME96_AR_DAC_EN;
2381 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2382 	return 0;
2383 }
2384 
2385 static int rme96_resume(struct device *dev)
2386 {
2387 	struct snd_card *card = dev_get_drvdata(dev);
2388 	struct rme96 *rme96 = card->private_data;
2389 
2390 	/* reset playback and record buffer pointers */
2391 	writel(0, rme96->iobase + RME96_IO_SET_PLAY_POS
2392 		  + rme96->playback_pointer);
2393 	writel(0, rme96->iobase + RME96_IO_SET_REC_POS
2394 		  + rme96->capture_pointer);
2395 
2396 	/* restore playback and capture buffers */
2397 	memcpy_toio(rme96->iobase + RME96_IO_PLAY_BUFFER,
2398 		    rme96->playback_suspend_buffer, RME96_BUFFER_SIZE);
2399 	memcpy_toio(rme96->iobase + RME96_IO_REC_BUFFER,
2400 		    rme96->capture_suspend_buffer, RME96_BUFFER_SIZE);
2401 
2402 	/* reset the ADC */
2403 	writel(rme96->areg | RME96_AR_PD2,
2404 	       rme96->iobase + RME96_IO_ADDITIONAL_REG);
2405 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2406 
2407 	/* reset and enable DAC, restore analog volume */
2408 	snd_rme96_reset_dac(rme96);
2409 	rme96->areg |= RME96_AR_DAC_EN;
2410 	writel(rme96->areg, rme96->iobase + RME96_IO_ADDITIONAL_REG);
2411 	if (RME96_HAS_ANALOG_OUT(rme96)) {
2412 		usleep_range(3000, 10000);
2413 		snd_rme96_apply_dac_volume(rme96);
2414 	}
2415 
2416 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
2417 
2418 	return 0;
2419 }
2420 
2421 static SIMPLE_DEV_PM_OPS(rme96_pm, rme96_suspend, rme96_resume);
2422 #define RME96_PM_OPS	&rme96_pm
2423 #else
2424 #define RME96_PM_OPS	NULL
2425 #endif /* CONFIG_PM_SLEEP */
2426 
2427 static void snd_rme96_card_free(struct snd_card *card)
2428 {
2429 	snd_rme96_free(card->private_data);
2430 }
2431 
2432 static int
2433 snd_rme96_probe(struct pci_dev *pci,
2434 		const struct pci_device_id *pci_id)
2435 {
2436 	static int dev;
2437 	struct rme96 *rme96;
2438 	struct snd_card *card;
2439 	int err;
2440 	u8 val;
2441 
2442 	if (dev >= SNDRV_CARDS) {
2443 		return -ENODEV;
2444 	}
2445 	if (!enable[dev]) {
2446 		dev++;
2447 		return -ENOENT;
2448 	}
2449 	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
2450 			   sizeof(struct rme96), &card);
2451 	if (err < 0)
2452 		return err;
2453 	card->private_free = snd_rme96_card_free;
2454 	rme96 = card->private_data;
2455 	rme96->card = card;
2456 	rme96->pci = pci;
2457 	err = snd_rme96_create(rme96);
2458 	if (err)
2459 		goto free_card;
2460 
2461 #ifdef CONFIG_PM_SLEEP
2462 	rme96->playback_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2463 	if (!rme96->playback_suspend_buffer) {
2464 		err = -ENOMEM;
2465 		goto free_card;
2466 	}
2467 	rme96->capture_suspend_buffer = vmalloc(RME96_BUFFER_SIZE);
2468 	if (!rme96->capture_suspend_buffer) {
2469 		err = -ENOMEM;
2470 		goto free_card;
2471 	}
2472 #endif
2473 
2474 	strcpy(card->driver, "Digi96");
2475 	switch (rme96->pci->device) {
2476 	case PCI_DEVICE_ID_RME_DIGI96:
2477 		strcpy(card->shortname, "RME Digi96");
2478 		break;
2479 	case PCI_DEVICE_ID_RME_DIGI96_8:
2480 		strcpy(card->shortname, "RME Digi96/8");
2481 		break;
2482 	case PCI_DEVICE_ID_RME_DIGI96_8_PRO:
2483 		strcpy(card->shortname, "RME Digi96/8 PRO");
2484 		break;
2485 	case PCI_DEVICE_ID_RME_DIGI96_8_PAD_OR_PST:
2486 		pci_read_config_byte(rme96->pci, 8, &val);
2487 		if (val < 5) {
2488 			strcpy(card->shortname, "RME Digi96/8 PAD");
2489 		} else {
2490 			strcpy(card->shortname, "RME Digi96/8 PST");
2491 		}
2492 		break;
2493 	}
2494 	sprintf(card->longname, "%s at 0x%lx, irq %d", card->shortname,
2495 		rme96->port, rme96->irq);
2496 	err = snd_card_register(card);
2497 	if (err)
2498 		goto free_card;
2499 
2500 	pci_set_drvdata(pci, card);
2501 	dev++;
2502 	return 0;
2503 free_card:
2504 	snd_card_free(card);
2505 	return err;
2506 }
2507 
2508 static void snd_rme96_remove(struct pci_dev *pci)
2509 {
2510 	snd_card_free(pci_get_drvdata(pci));
2511 }
2512 
2513 static struct pci_driver rme96_driver = {
2514 	.name = KBUILD_MODNAME,
2515 	.id_table = snd_rme96_ids,
2516 	.probe = snd_rme96_probe,
2517 	.remove = snd_rme96_remove,
2518 	.driver = {
2519 		.pm = RME96_PM_OPS,
2520 	},
2521 };
2522 
2523 module_pci_driver(rme96_driver);
2524